Products & Applications

Products & Applications
Products & Applications

CHEMFLO Products High Capacity Filters High Capacity Coalescers
Absolute-rated Filters 0.2 µm to 100 µm HF Series for High Flow Rates High Capacity Coalescers Liquid/Liquid Coalescers Liquid/Gas Coalescers Vessels and Filtration Systems ASME Code, 3-around to large systems

Pleated Filters Duraflo Series Pleated Surface Filters for removing hard particles HF Duraflo HV Duraflo HT Duraflo HP Duraflo Depthflo Series Pleated Depth Filters for removing gels and soft particles HF Depthflo HV Depthflo HT Depthflo HP Depthflo HF Series for High Flow Rate Applications HT Series for High Temperature HV Series for High Viscosity HP Series for High Purity Applications

Melt Blown Filters Quad ProTM MB Pro Coreless 6” OD
MB Pro Oil Adsorber 6” OD Quad ProTM MB Pro 2.5” OD

HF SERIES High Flow Filter Systems
Proprietary HF Depthflo Filter Medias developed and tested for increased dirt holding at high flux rates. Elements Available in 40”, 44”, 60” and 80” lengths.

Fewer Elements = Lower Costs
Each HF660 element replaces approximately 25 meltblowns Each HF660 element replaces approximately 35 stringwounds

HF Series Filtration Systems
Smaller Vessels = Capital Savings Few Elements = Operating Savings

HF Series Systems Rental vessels available With ASME Code Stamp
Up to ANSI 900 (2220 psi) 24” & 36” diameter horizontal vessels are most common Economical single element vessels available HORIZONTAL RENTAL VESSELS, ANSI 600 SINGLE ELEMENT RENTAL VESSELS, 275 psig Vertical

High Capacity Coalescers for Process Applications

Chemflo Liquid/Liquid Coalescers
High Capacity Pleated Coalescers Coalescers “Optimized” for Applications Most Common End Cap Styles Multi-stage Vessels Proprietary Medias Polyester Nylon 6,6 PPS (polyphenaline sulfide) Binderless Microfiberglass and Epoxy Binder Microfiberglass

Separators Separators repel water droplets to guard the outlet
To see if a separator has been disarmed, run a warm water test

Natural Gas Coalescers – Cartridge Style
“Filter-separators” usually 1um Outside-in flow Mesh 2nd Stage “Coalescers” usually 0.3um Inside-out flow Vane or Mesh 1st Stage

Chemflo Liquid/Gas Coalescers
Efficiency: 0.3µm and 0.1µm Coalescers for: Natural Gas Industrial Gas Pneumatic Air Gas Transmission Refineries and Petrochemicals Severe service Sour gas Amine Carry-over Heavy dirt loads

Filter & Coalescer Vessels

Why Partner with Chemflo?
High Capacity Products Optimized Products Cost Savings and Performance High Performance Separations Quality Control

Applications High Flow Applications Coalescer Applications
liquid-liquid liquid-gas Refinery Applications Petrochemical Applications

HF Series – High Flow Applications
HF Series Filtration Systems Hydrocarbons at Refineries Pipeline Pigging Amine at Refineries R. O. Pre-filters/Desalination Produced Water Salt Dome Leaching Removal of “Black Dust” in gas What to look for: Flow rates over 1000 lpm Efficiency needs

Liquid-liquid Coalescer Applications
Remove water from hydrocarbon fuels such as gasoline, diesel, low sulfur diesel, kerosene/jet fuel, bio-diesel and lube oils Separate insoluble process fluids such as acids, aromatics, and esters Remove carried-over caustic, glycol, amine in hydrocarbon streams Remove hydrocarbons/oil from cooling tower water or waste water Protecting catalysts, packing or trays

Liquid-Gas Coalescer Applications
0.3um “Coalescers” protecting high tolerance equipment such as turbines, high effiency compressors, fuel gas burner nozzles, gas separation membranes, and absorbent beds 0.3um “Coalescers” and 1um “Filter-Separators” remove compressor lube oil, water and hydrocarbon/condensate aerosols from natural gas and process gas Carried-over glycol after dryers and/or amine after amine sweetening

Refinery Applications
Common Refinery Applications – Chemflo’s high performance products are excellent for: Load Out Rack Tank Farms Glycol Natural Gas Filter-Separators More difficult Refinery Applications – Chemflo also has products for refinery applications where unique products are required: Lean and Rich Amines Caustic Treating Alkylate Reformate Low Sulfur Diesel

Refinery Applications
Common Refinery Applications – Chemflo’s high performance products are excellent for: Load Out Rack Tank Farms Glycol Natural Gas Filter-Separators More difficult Refinery Applications – Chemflo also has products for applications where common products fail: Lean and Rich Amines Caustic Treating Alkylate Reformate Low Sulfur Diesel

Sweetening Sweeting is the removal of sufur acid compounds found in hydrocarbons often called: Hydrogen Sulfide (H2S) or Mercaptans The main types of process equipment in sweetening systems are called: Amine Hydrotreaters Caustic Treatment (Merox Process) Sulfur Recovery Units (Claus Unit)

Amine Sweetening

Amine Sweetening Amine Systems
sweeten natural gas and remove CO2 Amine Systems are a closed loop system so contaminants build up over time in the system Main contaminants over time are iron sulfides Improved filtration can cause fewer upsets, less amine losses and lower amine concentrations CHEMFLO recommends 100% Filtration at 10um absolute or tighter

Amine Sweetening “Rich Amine” – after the contactor –can have a hydrocarbon content to high for polypropylene “Lean Amine” – after the exchanger – can have temperatures too high for polypropylene Common Types of Ethanolamine's Mono-ethanolamine (MEA), Di-ethanolamine (DEA), Mono-diethanolamine (MDEA) Other types of solvents (less common) Selexol, Rectisol, Purisol

Hydrotreater - naphtha
Fuel Gas naphtha FROM DISTILLATION ISOMERIZATION HYDROTREATING CATALYTIC REFORMING Fuel Gas Filtration: Fuel Gas used to fuel refinery equipment such as furnace, boilers, and turbines Liquids and solids will foul and plug burners and combustors. Liquid-Gas coalescer to removed heavier liquid hydrocarbons and particulates from fuel gas. Result: Improved reliability, lower maintenance costs, improved burning efficiency Before Hydrotreating: Catalyst Protection Particulates plug and deactivate catalyst bed Use backwash filters to remove solid particulates Use Liquid-liquid coalescer to remove water Result: improved conversion efficiency, few catalyst changeouts, improved yield, lower maintenance, labor and catalyst cost After Hydrotreating: Amine Sweetening Liquid hydrocarbon and particulates cause foaming and fouling within amine plant Use filters to remove particulates from recirculation sulfolane Result: reduced solvent losses and foaming, improved energy consumption, reduced maintenance, labor and disposal cost Naphthas have an aromatic content that dissolves many common filter and coalescer materials over time

Caustic Treating - Merox Process
The Merox Process is a common Caustic sweetening process developed by UOP

Caustic Treating Sodium Hydroxide sweetens liquid hydrocarbons
Caustic is most commonly used to sweeten: Kerosene (jet fuel) LPGs Light Naphthas (commonly used in ethylene production) Caustic reacts with many common filter materials including polyester, phenolics, glass fiber, urethane adhesives, aluminum and carbon steel. Coalescers remove carried over caustic by removing water downstream of caustic washes Caustic lowers interfacial tensions substantially causing emulsions that are difficult to remove

Catalytic Reforming Unit
Conversion of Low Octane Petroleum Refinery naphtha Feedstock to High Octane Gasoline (Petrol) Products. Other byproducts include methane, ethane, propane and butanes.

Catalytic Reforming Unit
Reformate is added to gasoline to boost octane and to get more of the crude distillate into gasoline The Catalytic Reformer converts naphtha, usually heavy naphtha, into reformate. The aromatic content in reformate attacks many common filter and coalescer materials including common adhesives, common glass fiber binders and cellulose/paper medias.

Hydrofluoric Alkylation Process
Akylation Process whereby isobutane combine with light olefins in the presence of a strong acid catalyst to produce a high octane alkylate Hydrofluoric Alkylation Process

Akylation Commonly called the “alky unit”
“Alkylate” is added to gasoline to boost octane and to get more crude distillate converted into gasoline (similar to reformate) The feed stock is isobutane and propylene/butylene but usually we are asked to filter or coalesce either “isobutane” or “isobutylene” The Alky unit uses either a “HF”(hydroflouric acid) or sulfuric acid catalyst The combination of acid carryover and isobutylene is a very aggressive solvent and dissolves many common filter materials

Low Sulfur Diesel Commonly called the “Green Diesel” or “ULSD” (Ultrao Low Sulfur Diesel) There have been huge investments by diesel refiners to add hydrotreaters to reduce sulfur content of diesel because of government regulations across the world Low Sulfur diesel can have low interfacial tensions causing coalescers not to work well unless designed for low IFTS Low Sulfur Diesel and especially ultra low sulfur diesel is a powerful solvent and attacks cellulose, binder in common glass fiber filters/coalescer and many adhesives

Chemical and Petrochemical Processes
Vinyl Chloride Monomer (VCM) Process Hydrogen Peroxide Polypropylene Process Ethylene Glycol Production and Ethylene Oxide Ethylene Oxide Production Ethylene Processing Bleach Production Sulfuric Acid Filtration AmmoniaEthylene Compressor & Molecular Sieve Protection Loadout: Bulk Chemical Filtration Bulk Chemical Filtration: Formaldehyde Process Loadout: Epoxy Resin Filtration Loadout: Resin Manufacturers Deionized Water Filtration

Vinyl Chloride Monomer (VCM) Process
DEPTHFLO 10µm, ABSOLUTE VCM/PVC Process Almost all Vinyl Chloride Monomer (VCM) produced is used in manufacturing of Polyvinyl Chloride (PVC) resins. PVC is used in the building and construction industry, consumer goods and packaging VCM: Filtration plays an important part in the VCM/PVC process as it has a direct affect upon process yield, process efficiency and product quality, and also helps minimize operator exposure to hazardous VCM Typically, vaporized ethylene dichloride is dried and passed over a catalyst (e.g. pumice or charcoal) packed in stainless steel tubes that are directly heated in a cracking furnace hot effluent gases are quenched and the condensed gases fed in to a fractionating tower operating under pressure VCM is formed by condensing the overhead vapors in a water condenser VCM is then filtered and sent to either a storage tank for further processing to produce PVC or sold to other manufacturers that make PVC PVC: PVC is manufactured using the mass suspension process usually VCM along with de-ionized water and other suspending agents are fed into a polymerization reactor PVC along with un-reacted VCM exits the reactor and various separation steps such as stripping and centrifugation are required to recover and recycle the VCM PVC slurry is dried and pellets are then screened, packaged and sold. Recommended Products: MB Series, nominally rated SS Series Markets: VCM/PVC Manufacturing

Hydrogen Peroxide Hydrogen Peroxide
HFGP 1-0 1µm or DURAFLO HFGP 1-0 1µm or DURAFLO DURAFLO HFGP 2-0 2µm or MB SERIES L/L COALESCER LC SERIES, COALESCER ONLY, SINGLE STAGE HFGP 2-0 2µm or DURAFLO Hydrogen Peroxide hydrogen peroxide is a mass produced chemical widely used for oxidizing and bleaching in he pulp and paper, textile, chemical, pharmaceutical, cosmetic, and electronics industries environmentally safe chemical alternative to chlorine ability to neutralize hazardous pollutants in industrial waste and wastewater streams. most common method used to produce hydrogen peroxide is auto-oxidation process, using a working solution (usually an alkylquinone in an organic solvent solution) produces the peroxide which is extracted by contact with deionized water hydroalkylquinone is formed by reduction of alkylquinone with hydrogen in a reactor hydroalkylquinone produced goes through several stages of filtration to remove and recover precious catalyst it is then fed into an oxidation reactor where air is blown through, producing hydrogen peroxide hydrogen peroxide is separated from the organic phase in a water extractor to yield 35 – 45% hydrogen peroxide solution alkylquinone is purified and recycled back to the hydrogenation reactor peroxide is treated to remove organic impurities processed to achieve the required final product concentration it is then loaded into tank cars or drums for distribution Recommended Products: Primary Catalyst Recovery: Regenerable backwash filters offering benefits of process economy, reliable filtration, low maintenance, and reduction in material handling problems. Secondary and Tertiary Catalyst Recovery: HFGP1-0 or PP DURAFLO is required to remove the catalyst and to ensure the safety of downstream process operation. Water Filtration: HFGP2-0 or MB Series filters are used to removed contaminants, such as iron oxides, and to improve product quality. The fixed pore construction of the filter cartridges ensures that the fluid is free from particulate contamination. The cleanliness of the final product is maximized by use of clean extractor water from which the product Is made. Aqueous Phase Removal From Working Solution: HFGP1-0 and Chemflo’s LC Series, Coalescer Only, Single Stage are used for quantitative removal of free water down to 15 ppmv. Regeneration Filter: HFGP1-0 filters are recommended to filter a 10% stream of the working solution to remove absorbent, which can contaminate the stream. The filters provide reproducible fluid qualityand longer service life. Thus, spent filter cartridge disposal and operator exposure to toxic fluid are minimized. Organic Removal from Crude Peroxide: Crude aqueous hydrogen peroxide (20 – 45%) solution is separated from the organic phase and exits the bottom of the extractor. The peroxide is then purified to remove entrained organic working solution and distilled to achieve the desired concentration prior to loading and distribution. Chemflo’s LC Series, Coalescer Only, Single Stage is used to remove organic contamination from the peroxide. Organics present in the peroxide can reduce chemical purity, lowering product quality. In some cases, where the organic content is high, there is excessive build-up in downstream crude storage tanks. The cleaning and rework of these tanks, along with the associated labor, disposal costs and lost production revenue can have a significant economic impact on the manufacturer. High efficiency coalescers quantitatively remove free organics from peroxide solutions and can, therefore, provide significant annual cost savings. Prefilter selection type and grade will depend upon filters used in the second and tertiary recovery stage. HFGP or PP DURAFLO is recommended. Final Product Filtration: Hydrogen peroxide can be shipped in several grades and concentrations ranging from 5 – 70%. Prior to shipping the final product or storing in storage tanks, the product is filtered to ensure quality. End use of the product determines the filtration level required. For less stringent end-use requirements (removal ratings from 2 – 20 µm), use HFGP Series filters. For more stringent requirements, PVDF Series filters should be used. Markets: HFGP 1-0 HFGP 1-0 LC SERIES, COALESCER ONLY, SINGLE STAGE PVDF SERIES

Polypropylene Process
DEPTHFLO 5-10 µm DEPTHFLO 10-20 µm N66 DEPTHFLO 10-20 µm N66 DEPTHFLO 5-10 µm DEPTHFLO 5-10 µm Phillip, Delete MB and say Depthflo except for the hexane and acetone say N66 Depthflo Propropylene Process, Wash and Quench Water Filtration Polymer Plants Polymers such as polypropylene, polyethylene, polyester and polyvinyl chloride are initially manufactured in pellet form A pelletizer forms the pellets after the resin has been polymerized quench water is used to help in the pellet formation and must be filtered to maintain quality treated city water and river water are the main sources used for the quench water proper filtration is necessary to remove sand, iron, and organic material to prevent water contaminants from flashing onto the pellet surface after formation, wash water is used to removed airborne debris that may also adhere on the pellet surface lack of filtration can result in a lower quality product, thus, reducing its market value Recommended Products: MB Series II, 5-40 µm, grades of any style filters Market: Any polymerization process (e.g., Polyethylene, Polypropylene, PVC) Benefits: Reduce sites for gel formation Minimize catalyst fouling More complete polymerization Improved conversion efficiency Reduce spinneret plugging/costly spin breaks Protect expensive high polymer filters/less frequent cleanings Extend pack filter life Final Product Benefits: Enhanced product yields Improved product strength and consistency Allows production of finer denier fibers Produce thinner, stronger films DEPTHFLO 40µm DEPTHFLO 5-40 µm

Ethylene Glycol Production and Ethylene Oxide
DURAFLO 2 – 20 µm DURAFLO 5 – 40 µm Ethylene Glycol, Ethylene Oxide Ethylene glycol: fine filtration is required because both materials are sold as feedstock to the film and fiber industry any small amount of particulate matter remaining in the feedstream will affect quality, and, thus, reducing market value used as a de-icing material Ethylene Oxide filtration is required to prevent plugging of spear nozzles on the de-icing equipment Both ethylene glycol and ethylene oxide are considered hazardous chemicals, and the manufacturers are required to minimize operator exposure. Providing a filter cartridge with a high dirt holding capacity will yield long filter life, minimizing filter changeouts and operator exposure. Another benefit to long filter life and fewer cartridge changeouts is a reduction in hazardous waste disposal costs. Update: Disposal costs for hazardous waste are increasing due to the scarcity of hazardous waste landfills. Recommended Products: DURAFLO Series Cartridges, 2-20 µm HF DURAFLO Series, 2-20 µm Markets: Ethylene Glycol, Ethylene Oxide, Polymer Plants

Ethylene Oxide Production
LG COALESCER QUAD PRO™ 10µm Ethylene Glycol, Ethylene Oxide Ethylene glycol: fine filtration is required because both materials are sold as feedstock to the film and fiber industry any small amount of particulate matter remaining in the feedstream will affect quality, and, thus, reducing market value Ethylene Oxide used as a de-icing material filtration is required to prevent plugging of spear nozzles on the de-icing equipment Both ethylene glycol and ethylene oxide are considered hazardous chemicals, and the manufacturers are required to minimize operator exposure. Providing a filter cartridge with a high dirt holding capacity will yield long filter life, minimizing filter changeouts and operator exposure. Another benefit to long filter life and fewer cartridge changeouts is a reduction in hazardous waste disposal costs. Update: Disposal costs for hazardous waste are increasing due to the scarcity of hazardous waste landfills. Recommended Products: MB Series Cartridges, 2-20 µm HFMB Series, 2-20 µm Markets: Ethylene Glycol, Ethylene Oxide, Polymer Plants

Ethylene Processing Ethylene Processing – Dilution Steam System
fouling of the Dilution Steam System (DSS) Heat Exchangers can be a source of high maintenance and operating costs. Common problems are: increased steam usage reduced efficient in low, medium, and high pressure steam systems losses of recoverable pyrolysis gasoline increased wastewater treatment costs reduced energy efficiency due to fouling of steam generator high downtime and cleaning costs significant quantities of pyrolysis gasoline (hydrocarbons) are carried over from the Quench Water system Oil-Water separator dispersion is very stable and difficult to separate. poor separation efficiency of the oil/water separator conventional coalescer and mechanical liquid/liquid separation equipment are typically less efficient when the interfacial tension is lower than 20 – 25 dyne/cm. much of the pyrolysis gasoline flows to the Dilution Steam Heat Exchangers causing fouling and resulting in high operating and maintenance costs there have been numerous attempts to deal with this problem varying from chemical treatment programs, frequently scheduled off-line cleaning of the heat exchangers, and installation of additional heat exchanger capacity. While some of these attempts impact the cost of operation and maintenance, none of them address the cause of the fouling problem the lube oil can discharge into the process gas resulting in fouling of downstream equipment and product quality problems Recommended Products: LC Series Coalescer to remove pyrolysis gasoline from quench water: Reduces exchanger fouling Improve efficiency of steam system Reduce operating and maintenance costs Improve recover of pyrolysis gasoline LC Series Coalescer to remove water from pyrolysis gasoline: Improve product quality Reduce corrosion MB Series 10 microns: Improve overall performance of sour gas treating operating Liquid/Gas Coalescer to remove compressor lube oil from ethylene and other hydrocarbon gases: Reduce lube oil losses Improve equipment reliability Chemflo’s LC series, coalescer only, single stage to separate the oil/water emulsions even if the interfacial tension is as low as 1 dynes/cm. LC series coalescer installed in ethylene plants effectively separate the pyrolysis gasoline/water dispersion minimizing the carryover of hydrocarbons to the DSS Steam Generators and the associated operating costs and maintenance problems. In addition, the carried over pyrolysis gasoline is recovered and blended into a gasoline pool. The stability of an emulsion containing water and pyrolysis gasoline is very difficult to separate. Most liquid/liquid dispersions with an interfacial tension less than 20 dyne/cm cannot be separated in knock-out drums, packed vessels, sand filters, or other conventional coalescers. Markets: Ethylene Processing

Bleach Production QUAD PRO™ 10 µm DURAFLO 20 µm DURAFLO 10 µm

Sulfuric Acid Filtration
DURAFLO 10 µm for Industrial Uses or 1 µm for Electronics Grade

Ammonia Ammonia Processing: Monitor oil content of in ammonia
source of the ammonia is generally compressor lube oil systems compressors often discharge small quantities of lube oil into the synthesis gas and recycle gas and, unless removed, the oil remains in the process often times resulting in off-specification ammonia another problem can exist in the CO2 removal step of an ammonia plant a circulation liquid (amine or hot carbonate) is used to remove the CO2. the liquid absorbs an acid, the environment in the circulation system is highly corrosive the corrosion materials will result in plugged trains in the CO2 removal system, reduced CO2 removal efficiency and high losses of amine or carbonate solution Recommended Products: Chemflo’s Disposable or backwash particulate filters

Ethylene Compressor & Molecular Sieve Protection
LIQUID/GAS COALESCER TO REMOVE LUBE OIL AND HYDROCARBON CONDENSATE PRIOR TO THE FURNACE TO PROTECT BURNER NOZZLES Ethylene Compress and Molecular Sieve System Ethylene producers are know to get less than three years when using knock-out pots and mist eliminator to protect the molecular sieve bed Ethylene gas is compressed and exits the compressor Hydrocarbons will condense into a very fine aerosol mist which is very difficult to separate with knock-out drums or packed vessels Hydrocarbon condensates, and/or wash oils from the compressor, can greatly reduce performance and life of molecular sieve absorbent bed Life of Molecular Sieve resin is largely dependent on the number of regeneration cycles it undergoes in service Each cycle subjects the sieve to temperature rises and pressure decreases which vaporizes any hydrocarbon on the sieve and cracks the surface of the sieve Cracks and fissures cause attrition and results in expensive replacement of Molecular Sieve material Problems that can result are: Frequent regeneration cycles Adsorption performance loss Premature replacement of Molecular Sieve material due to attrition and high delta pressure within bed Higher energy costs Recommended Products: A liquid/gas coalescer in ethylene gas lines after knock-out drums will remove virtually all of entrained liquids in gas both hydrocarbons and aqueous aerosols aerosols as small as 0.1 micron LIQUID/GAS COALESCER TO REMOVE HYDROCARBON FROM ETHYLENE GAS CE DURAFLO DISPOSABLE FILTERS (RATED AT 10 µm NOMINAL) TO REMOVE MOLECULAR SIEVE FINES

Loadout: Bulk Chemical Filtration
HF DEPTHFLO µm HF DEPTHFLO µm HF DEPTHFLO 10 µm Bulk Chemical Filtration: Formaldehyde Process In filtration in chemical manufacturing, there are two important concerns to manufacturers: Protecting expensive equipment from fouling, erosion and corrosion Producing high clarity products to meet customer’s specification. Cleanliness can be a strong selling point for chemical producers. Formaldehyde Process: protect the heater, reactor, absorber, and the distillation column heat exchanger should be protected from entrained catalyst fines final product itself is usually inspected for clarity contaminant paraformaldehyde may precipitate during colder weather (below 60˚F) forming a yellow haze Recommended Products: MB Series, 1 – 40 µm (Sulfuric acid at ambient temperature and formaldehyde) Market: Bulk Chemical Processing, Formaldehyde, Sulfuric Acid HF DEPTHFLO µm

Bulk Chemical Filtration: Formaldehyde Process
MB SERIES 20µm MB SERIES 20µm MB SERIES 20µm Bulk Chemical Filtration: Formaldehyde Process In filtration in chemical manufacturing, there are two important concerns to manufacturers: Protecting expensive equipment from fouling, erosion and corrosion Producing high clarity products to meet customer’s specification. Cleanliness can be a strong selling point for chemical producers. Formaldehyde Process: protect the heater, reactor, absorber, and the distillation column heat exchanger should be protected from entrained catalyst fines final product itself is usually inspected for clarity contaminant paraformaldehyde may precipitate during colder weather (below 60˚F) forming a yellow haze Recommended Products: MB Series, 1 – 40 µm (Sulfuric acid at ambient temperature and formaldehyde) Market: Bulk Chemical Processing, Formaldehyde, Sulfuric Acid MB SERIES 20µm

Loadout: Epoxy Resin Filtration
HF DEPTHFLO 70 – 100 µm HF DEPTHFLO 20 µm Resin Tank Loading: Epoxy Resin Filtration, Resin Manufacturers synthetic resins (e.g., epoxy, alkyd, and phenolic resin) are intermediates used in a variety of final products; paint, printed circuit boards, wire coatings, adhesives and plastics the critical nature of the final product will determine the level of filtration required – it may be 1 µm absolute or 70 µm absolute most resins have viscosities which are far higher than water, ranging from 10 to 10,000 cps and higher in addition to hard particulate matter, many of these resins contain deformable gelatinous contaminants to prevent gel penetration, the cartridge pressure drop must be minimized through the use of pleated cartridges or MB series filters. Often times, the gel filtration takes play within the process, and a polishing filter is used at the tank car loading are for removing any remaining contaminants Prior to selecting a filter medium, the solvent base of the resin must be known since this is usually the most chemically aggressive component in the resin. Recommended Products: HFMB Series Filter: 40 – 100 µm* HFGP Series (no zeta charge) *Depends on chemical compatibility Markets: Resins: Epoxy, Alkyd, Phenolic QUAD PRO™ 20 µm

Loadout: Resin Manufacturers
HF DEPTHFLO 40 µm HF DEPTHFLO 40 µm Resin Tank Loading: Epoxy Resin Filtration, Resin Manufacturers synthetic resins (e.g., epoxy, alkyd, and phenolic resin) are intermediates used in a variety of final products; paint, printed circuit boards, wire coatings, adhesives and plastics the critical nature of the final product will determine the level of filtration required – it may be 1 µm absolute or 70 µm absolute most resins have viscosities which are far higher than water, ranging from 10 to 10,000 cps and higher in addition to hard particulate matter, many of these resins contain deformable gelatinous contaminants to prevent gel penetration, the cartridge pressure drop must be minimized through the use of pleated cartridges or MB series filters. Often times, the gel filtration takes play within the process, and a polishing filter is used at the tank car loading are for removing any remaining contaminants Prior to selecting a filter medium, the solvent base of the resin must be known since this is usually the most chemically aggressive component in the resin. Recommended Products: HFMB Series Filter: 40 – 100 µm* HFGP Series (no zeta charge) *Depends on chemical compatibility Markets: Resins: Epoxy, Alkyd, Phenolic HF DEPTHFLO 40 µm

Deionized Water Filtration
Deionized (DI) Water Filtration Water used as: fluid for rinsing vessels (tanks, vials, bottles) dilution fluid quench/wash fluid for final product heat exchanger fluid reaction medium The quality of water depends upon its end use. Regardless of where the water is used, it is necessary to removed particles and bacteria. Unfiltered water can foul downstream equipment leads to costly repair and downtime contaminate catalyst lower conversion rates and process yields. Incoming water contains suspended solids and particulates dissolved organics dissolved inorganics bacteria treated first by sand or multimedia filters to remove bulk solids followed by an activated carbon bed to remove dissolved organics In some cases, a Reverse Osmosis System (RO) is place downstream of the carbon bed to reduce high salt contents and dissolved organics ion exchange unit is used to remove dissolved inorganic salts The D.I. water is then sent to a storage tank before distribution to the various point-of-use areas. To prevent the growth of bacteria, unused water is continuously re-circulated through the storage tanks, which uses vent filters or a pre-filtered nitrogen blanket to prevent airborne bacteria contamination. When ultrapure water is required, it is subjected to additional purification such as ultraviolet light (UV) and ultrafiltration. Both the UV and ultrafiltration units remove microbial contaminants such as bacteria and other microorganisms to ensure high purity of water. The UV units will also reduce dissolved organics. Recommended Products: 1. MB Series, nominally rated, 20 – 40 µm filters for higher dirt capacity and longer life. Effective removal of contaminants prevents the absorptive sites of the carbon bed from becoming fouled. 2. MB Series, nominally rated, 5 – 10 µm filters for downstream of carbon beds to remove migrating carbon fines. The filters protect the ion exchange resin bed from particulate contamination, thereby increasing the unit’s efficiency. 3. MB Series, nominally rated, 5 – 10 µm filters to prevent fouling and avoid costly downtime associated with cleaning the modules. 4. MB Series, nominally rated, 5 – 10 µm filters as resin trap filters downstream of the ion exchange resin beds. These filters prevent fragmented resin fines from fouling expensive downstream equipment such as tanks, valves, pumps, etc. 5 & 6. For ultra high purity water, such as water used for a reaction medium in the manufacture of specialty polymer resins or water used as a dilution agent for a high purity chemical (e.g. semiconductor grade), additional filtration steps are required to further purify the water. Pre and final point-of-use filters are recommended. N66 (NB) 0.45 µm prefilter and N µm (NAZ) final filters guard against particles generated by pumps, corrosion particles present in piping, and bacteria. Removal of these contaminants ensure high yields and conversion rates in the chemical or polymerization reactor or high quality grades of the final chemical product. 7. Hydrophobic Polyvinylidene fluoride (PVDF) elements are recommended as vent filters on storage tanks to prevent airborne particulate and bacterial contamination from enter the tank. Filters have an absolute microbial rating of 0.2 µm in liquid service and a particulate rating of 0.01 µm in gas service. 8. Ultrafiltration with molicular weight cutoff of 6,000 daltons are recommende for high purity water where the TOC level is less than 20 ppb. Markets: D.I. Water Filtration, PVC Process: Suspension Polymerization Benefits: Higher dirt capacity Longer filter life Prevents the adsorptive sites of the carbon bed from becoming fouled Protect ion exchange resin bed from particulate contamination Protect expensive and sophisticated R.O. membrane Extend life of R.O. membrane Less frequent change out Prevent fragmented resin fines from fouling expensive equipment such as tanks, valves, pumps, etc. Removal of bacteria and colloidal silica particles to ensure high yields and conversion rates in chemical or polymerization reactor and allow high quality of final chemical product Prevent airborne particulate and bacterial contamination from entering the tank

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