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Galvanic Applied Sciences. Galvanic Applied Sciences is a Canada-based company that has facilities in Boston and England and representation all over the.

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Presentation on theme: "Galvanic Applied Sciences. Galvanic Applied Sciences is a Canada-based company that has facilities in Boston and England and representation all over the."— Presentation transcript:

1 Galvanic Applied Sciences

2 Galvanic Applied Sciences is a Canada-based company that has facilities in Boston and England and representation all over the world. The company develops electronic technology for Gas and Liquids analysis. Head Office 7000 Fisher Road SE, Calgary, Alberta, Canada Website: www.galvanic.com

3 Lead Acetate Tape Analysers for Hydrogen Sulphide and Total Sulphur Determination SRU Analysers for Tail Gas, Sulphur Pits and Oxygen Demand Sulphur Chromatograph Gas Chromatograph for BTU and Composition measurement in Natural Gas Electronic Volume Correctors

4 Acoustic and Optic Analysers for Turbidity, Color and Concentration measurements. Online Viscosity Analysers Online Automatic Titrators Field Programmable UV Analyzers

5

6 Sulphur Chromatography Analysers 842/843

7 M EASUREMENT P RINICIPLE 7

8 S ULFUR C HEMILUMINESCENCE Chemiluminescence: A chemical reaction which produces light. Reaction Furnace R-S + O2 SO2 + other products of combustion SO2 + H2 SO + H2O Chemiluminescence Chamber SO + O3 SO2* + O2 SO2* SO2 + Light (350 nm)

9 C HROMATOGRAPHY Separation of complex mixtures based on selective adsorption whereby the components of the mixture can be identified and quantified.

10 G AS C HROMATOGRAPH The gas chromatograph consists of three major components. The injection system The separation columns The detector The injection system and separation columns are located in a temperature controlled oven.

11 R ETENTION T IME The elapsed time between when sample is injected into the column to when a specific compound is detected. Each component in the mixture has a specific retention time. The retention time is used to identify the component.

12 P EAK A REA The area under the peak as calculated by a software algorithm. The peak area determines the concentration of the component

13 T YPICAL C HROMATOGRAM Butane 0 10 20 30 40 50 60 70 80 1163146617691106121136151166181196211226241256271286 Seconds H2S MeSH EtSH DMS CS2 i-PrSH 40 ppm 9 ppm 35 ppm 70 ppm 30 ppm Column: 30 m x 0.53 mm id MTX 1 @ 60°C isothermal. Retention Time

14 T YPICAL R ETENTION T IMES F OR S ULFUR C OMPOUNDS IN N ATURAL G AS @ 50°C H2S(Hydrogen Sulfide) 80 sec COS (Carbonyl Sulfide) 86 sec MeSH(Methyl Mercaptans)120 sec EtSH(Ethyl Mercaptans)180 sec DMS(Dimethyl Sulfide)200 sec CS2(Carbon Disulfide)220 sec i-PrSH(iso-Propyl Mercaptan)250 sec t-BuSH(tertiary Butyl Mercaptan) 320 sec n-PrSH (normal-Propyl Mercaptan) 360 sec THT (Tetrahydrothiophene)630 sec

15 842 S ULFUR A NALYZER Sulfur specific gas chromatograph. Identify and quantify individual sulfur compounds in gas streams.

16 A PPLICATIONS 16

17 M EASURING S ULPHUR Sulfur is the chemical element that has the atomic number 16. It is denoted with the symbol S. It is an abundant multivalent non- metal. Sulfur, in its native form, is a yellow crystalline solid. In nature, it can be found as the pure element and as sulfide and sulfate minerals. It is an essential element for life and is found in two amino acids, cysteine and methionine. Its commercial uses are primarily in fertilizers, but it is also widely used in black gunpowder, matches, insecticides and fungicides. Elemental sulfur crystals are commonly sought after by mineral collectors for their brightly colored polyhedron shapes. In nonscientific context it can also be referred to as brimstone. S

18 T YPICAL S ULFUR C OMPOUNDS

19 T ARIFFS Most pipeline companies enforce tariffs, these are to: Protect against corrosion Provide safety Aid with odorization Environmental purposes (SO 2 emissions) Typically the tariff for H 2 S is 4 ppm and 16 ppm for TS (or ¼ grain and 1 grain respectfully)

20 ASTM S TANDARDS Many regulatory agencies such as EPA or DOT may make reference to ASTM standards Lead Acetate Tape adheres to the following ASTM standards D3031-81 D4468-85 D4810-88 D4084-82 (most commonly referred to)

21 ASTM S TANDARDS

22 A CID R AIN The combustion of Sulphur-Based compounds generates Sulphur dioxide (SO 2 ), part of this Sulphur Dioxide goes to the atmosphere and its source is combustion of gases with high content of Total Sulphur. S + O 2 SO 2 Sulphur dioxide in presence of the atmospheric humidity (water) becomes Sulphuric Acid: SO 3( g ) + H 2 O ( l ) H 2 SO 4( l ) Sulphuric Acid precipitates back to the ground as Acid Rain.

23 P OTENTIAL M ARKETS Refining Petrochemical Natural Gas Other

24 R EFINING Diesel Total Sulfur (500 ppm) New regulation is 15 ppm Gasoline Total Sulfur 30 ppm Sulfur Chromatography Propyl Mercaptan and Thiophenes Kerosene and Other Fuels Liquified Petroleum Gases (Propane/Butane) H 2 S, COS, Other Sulfurs Fuel Gas Stack Emissions Total Reduced Sulfur (TRS) H 2 S, COS, MERCAPTANS

25 P ETROCHEMICAL Ethylene / Propylene Trace Levels - Product Quality/ Catalyst Protection H 2 S, COS, MeSH, TS Liquified Petroleum Gases Feed Stock - Catalyst Protection H 2 S, COS, TS Syngas H 2, CO, CO 2, CH 4 Product Quality / Catalyst Protection Trace (ppb) H 2 S and TS Fertilizer Catalyst Protection Feedstock is generally Natural Gas Trace (ppb) H 2 S and TS Other

26 N ATURAL G AS Pipeline Product Quality 4 ppm H 2 S and 16 ppm TS Ordorants Mercaptan analysis to ensure gas is properly odorized analysis to ensure no odorant is in the gas as some customers may have sensitive processes Corrosion Control H 2 S measurement Production Product Quality 4 ppm H 2 S, 16 ppm TS, Naturally occurring mercaptans Plant Inlet High concentrations of H 2 S Flare Lines High concentrations of H 2 S Environmental regulations

27 O THER Pulp and Paper Environmental TRS - H 2 S, COS and Mercaptans Thermal Power Thermal Steam H 2 S as a byproduct from the steam CO 2 (Food Grade) Product Quality Trace (ppb) Total Sulfur

28 F EATURES AND B ENEFITS 28

29 W HAT DOES THE 842 OFFER ? Linearity Equimolar Response Repeatability Sensitivity Independent of Matrix Features

30 E QUIMOLAR R ESPONSE Each sulfur compound exhibits the same response characteristic Provides Quantitive and Qualitative Total Sulfur measurement Chromatograph can calibrated using single component standard reducing calibration complexity

31 R EPEATABILITY Generally results are +/- 1% or better Ideal for applications requiring process control

32 S ENSITIVITY Able to resolve 10 ppb in Gases and 100 ppb in Liquids lower ranges available better resolution

33 L INEARITY 4 orders of magnitude ppb to percent on the same detection principle allows calibration to be done with higher concentration standard for ppb applications

34 I NDEPENDENT OF M ATRIX Hydrocarbon changes do not affect the overall measurement Multistreaming Batching applications Blending Process upsets

35 F EATURES Autocalibration reduces overall maintenance Combustion cross flow design provides complete combustion enhancing measurement On-Board Microprocessor No PC required for operation of the analyzer

36 F EATURES Low maintenance General mantenance is required only quarterly for system with vacuum pump Virtually maintenance free with use of air driven vacuum transducer Simple Design Easy to maintain and troubleshoot

37 G ENERAL D ESCRIPTION OF THE I NSTRUMENT

38 842 O VEN

39 C APILLARY C OLUMN Metal coated capillary column for durability. 30 meter Wall coated open tubular (WCOT) column has thin layer of liquid on inner diameter of a thin tube. Useful for complex separations up to C 4 mercaptans or sulfides.

40 842 I NJECTION S YSTEM 10 port Helium actuated valve for sample injection and column backflush.

41 S ULFUR C HEMILUMINESCENCE Chemiluminescence: A chemical reaction which produces light. Reaction Furnace R-S + O2 SO2 + other products of combustion SO2 + H2 SO + H2O Chemiluminescence Chamber SO + O3 SO2* + O2 SO2* SO2 + Light (350 nm)

42 S TEP 1: C OMBUSTION Sulfur compound reacted with air and hydrogen at 750 o C under vacuum to form sulfur monoxide (SO). Sulfur Compound Hydrogen Oxygen SO

43 R EACTION F URNACE

44 S TEP 2: C HEMILUMINESCENCE Sulfur monoxide is reacted with ozone in the reaction chamber to form SO 2 and LIGHT.

45 R EACTION C ELL

46 S TEP 3: D ETECTION BY PMT Light is detected by a photomultiplier tube (PMT). Photomultiplier tube generates a current proportional to amount of sulfur present. SO Ozone Light

47 P HOTOMULTIPLIER T UBE (PMT)

48 T HERMOELECTRIC C OOLERS PMT operates best at 0 – 5 o C. Two Peltier Elements wired in series are used to keep PMT cool Dry air purge is used to prevent water condensation on PMT.

49 D ETECTOR A SSEMBLED

50 PMT P OWER S UPPLY PMT requires 1100 VDC for operation. PMT power supply has 24 VDC input and 1100 VDC output.

51 A MPLIFIER Amplifier converts PMT current to millivolts Dipswitches are used for signal attenuation

52 O ZONE G ENERATOR Ozone is supplied from an onboard ozone generator. Air is passed through a steel tube at 7500 VAC. Atmospheric oxygen is converted to ozone.

53 V ACUUM The sample combustion and chemiluminescence are done at near vacuum conditions to preserve the SO intermediate.

54 C HEMILUMINESCENCE F LOW S CHEMATIC

55 S ERVICES AND U TILITIES 55

56 U TILITY G ASES Carrier Gas. UHP Helium supplied by dual stage bottle regulator at 80 psig. Controlled at analyzer by carrier gas regulator and mass flow controller. Helium also controlled to 60 psi by another regulator for valve actuation.

57 U TILITY G ASES Hydrogen. UHP Hydrogen supplied by dual stage bottle regulator at 60 psig. Flow is controlled by mass flow controller.

58 U TILITY G ASES Ozone Drawn from ambient air through dessicator. Flow is controlled by rotameter. Combustion Air Drawn from ambient air through dessicator. Flow is controlled by rotameter. PMT Purge. Prevents condensation on PMT. Instrument air or nitrogen can be used. Flow is controlled by rotameter.

59 U TILITY G ASES Calibration Gas. 5 - 10 ppm H 2 S in Nitrogen. Supply at 15 psig with stainless steel dual stage bottle regulator.

60 M AINTENANCE C YCLE Perform regular preventative maintenance every 3 months. Change pump oil every cycle. Change inlet trap every cycle. Use 50/50 mix of charcoal and desiccant. Replace valve diaphragm as needed. 1,000,000 cycles. Replace air desiccant as needed. Ceramic tubes should not need to be replaced.

61 S PECIFICATIONS 61 Specifications Detection limit0-10 ppb Number of Streams4 plus calibration Sample InjectionValco Model VIII Linearity2% Repeatability2% Cycle time5 minutes Electrical ClasificationClass I, Division 1 and 2, Groups B, C and D. Power Consumption600 watts at 120 VAC

62 S PECIFICATIONS 62 Specifications Electronic PlatformDallas 87C530. Microprocessor c/w 20 Bit A/D, 12 Bit D/A, 4-20 ma Output, and Intrinsically Safe Keypad Outputs2, 4-20 ma Scaled, 4-20 ma Raw Sensor, 6–5 amp SPDT Relays, Modbus, Optional 32 4-20 ma Outputs (User Assignable) Contact InputsRemote Calibration Start, 4 Status (Dry Contacts) Dimensions36H x 34W x 12D Weight250 lbs

63 R ECOMMENDED S PARE P ARTS PMTBA0755 Valve Rebuild KitBA1274 Ceramic TubesMC0745/MC0746 Pump OilCO01672 CharcoalCO1746 Moisture Trap RefillCO0888 1/8 Teflon Ferrules 1/16 Teflon Ferrules


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