Presentation is loading. Please wait.

Presentation is loading. Please wait.

Saving Energy Improving Technology Voith Paper Fiber & Environmental Solutions Ravensburg / Germany Eugen Loderer TAPPSA Conference Cape Town 23rd Sept.

Similar presentations


Presentation on theme: "Saving Energy Improving Technology Voith Paper Fiber & Environmental Solutions Ravensburg / Germany Eugen Loderer TAPPSA Conference Cape Town 23rd Sept."— Presentation transcript:

1 Saving Energy Improving Technology Voith Paper Fiber & Environmental Solutions Ravensburg / Germany Eugen Loderer TAPPSA Conference Cape Town 23rd Sept. 2010

2 Voith Paper Fiber & Environmental Solutions Ravensburg / Germany Contacts South Africa: Hennie Alberts Tel: Cell:

3 Products for Saving Energy and Improving Technology: 1.Pulper 2.Coarse Screening 3.Slot Screening 4.Cleaning 5.Flotation 6.Refining

4 title, author short name | xx | 4 IntensaPulper IP-V (Virgin) Pulper for Virgin Fiber

5 title, author short name | xx | 5 Conventional 1. How can energy be saved? - Avoid flow losses!  Excentricity instead of flow resistant directional baffles IntensaPulper IP

6 title, author short name | xx | 6 5 sec 10 sec 15 sec 1. How can energy be saved? - Avoid flow losses!- Color test Conventionel Intensa Pulper Mixing by excentricity, instead of baffles

7 title, author short name | xx | 7 Investigate your savings!

8 Intensa Technology - Rebuild Low Energy Consumption in Pulping Intensa Technology - A Chance for any Pulper

9 Intensa Pulper Rebuild - Deflector and other components create a very good vortex and the suspension is guided to the center

10 title, author short name | xx | 10 Modifications by INTENSA components for existing pulpers ②** Intensa Deflector ① Rotor Modification ③ Bale Breaker ④ Double Cone Bottom (option only) **2 = to guide suspension and to improve vertical movement of suspension down to rotor

11 title, author short name | xx | 11 Projects at a Glance Customer in Thailand Pulper type UP10 Furnish AOCC and LOCC Tonnage 404 bdmt/day Operation Continuous Operation volume 38 m 3 Installed power 710 kW Power consumption 590 kW in average Consistency 3,5% Scope of supply:  Intensa Deflector  Rotor Modification  Rotor cap with Eddy Cross  Installation on site  Startup supervision  Measurement before and after rebuild

12 title, author short name | xx | 12 Results of rebuild-ROI calculation Customer in Thailand BeforeAfter Power consumption590 kW Consistency3,5%4,6% Capacity404 t548 t Net volume38 m 3 Specific energy input 15,5 kW/m 3 Specific energy consumption35,1 kWh/t25,9 kWh/t Cost saving per year (with 350 days per year) €/year 34% increased No change 31% increased 26% of savings No change ROI ≈ 13 months

13 Products for Saving Energy and Improving Technology: 1.Pulper 2.Coarse Screening 3.Slot Screening 4.Cleaning 5.Flotation 6.Refining

14 Outlook in Screening Energy savings with Eclipse...replaces step rotor

15 title, author short name | xx | 15 Eclipse Rotor: Energy saver for DIP applications Head to head trials: Current Step Rotor vs. Eclipse Rotor  Low energy Rotor to keep the current performance of Step Rotor Step RotorEclipse Rotor 12.5 mm Gap5 mm Gap

16 title, author short name | xx | 16 Eclipse Rotor: Energy saver for DIP applications Head to head trials: Current Step Rotor vs. Eclipse Rotor Development of Power Consumption vs. Rotor Tip Speed Rotor tip speed [m/s] Power consumption [kW]  up to minus 30% power consumption (kW)  at 20% higher throughput level for Eclipse Rotor

17 title, author short name | xx | 17 Eclipse Rotor: Energy saver for DIP applications Head to head trials: Current Step Rotor vs. Eclipse Rotor  up to minus 45% specific energy  at 20% higher throughput level for Eclipse Rotor Development of Spec. Energy vs. Rotor Tip Speed Rotor tip speed [m/s] Spec. energy [kWh/t]

18 title, author short name | xx | 18 Eclipse Rotor: Energy saver for DIP applications Eclipse Performance  Higher throughput performance up to 20%  Specific energy reduced up to 45%  Similar thickening factor for both Rotor types  Up to 30% higher screening efficency Operational recommendation  For rebuild and new installation instead Step Rotor  Rotor tip speed 18 to 20 m/s  Stock consistency 2,0 to 4.5 %  Rotor-Screen Basket gap 5 mm  Basket combination: All hole types

19 Products for Saving Energy and Improving Technology: 1.Pulper 2.Coarse Screening 3.Slot Screening 4.Cleaning 5.Flotation 6.Refining

20 Guangzhou DIP 2 retrofit in 2005  rotor and screen basket situation before and afterwards  reduction of power consumption  increasing of sticky removal efficiency

21 title, author short name | xx | 21 Rotor Situation Ahlström Screen F4 before and after upgrade Rotor Situation before upgradeRotor Situation after upgrade

22 title, author short name | xx | 22 Old Screen Basket and New C-bar Screen Basket New C-bar Screen Basket with much higher open area Screen Basket old

23 title, author short name | xx | 23 Reduction ofPower Consumption in First Stage:  Situation before upgrade:Installed power: 2 x 132 kW rotor speed: 550 rpm power consumption: 2 x 110 kW  Situation after upgrade:Installed power: 2 x 132 kW rotor speed: 440 rpm power consumption: 2 x 80 kW  Annual savings in energy at 350 running days a year: kWH / 0,07 €/kWh = ,-- €/year

24 title, author short name | xx | 24 Sticky removal efficiency before upgrade: 1st Stage: ηSticky 60%

25 title, author short name | xx | 25 1st Stage: ηSticky 74% Sticky removal efficiency after upgrade:

26 C-bar™ Q The High Capacity Screen Basket for Stock Preparation

27 title, author short name | xx | 27 C-bar TM Q Standard bar C-bar TM S Narrow bar C-bar TM Q Profile width [mm] Relative open area [%] C-bar TM S C-bar TM Q2.7~120 (previous SQ) length unit More bars at given length  higher number of slots  higher open area

28 title, author short name | xx | ,21,41,61,82 Slot velocity [m/s] Sticky efficiency [%] C-bar TM Q – Results of mill tests: Influence on sticky removal C-bar TM Q C-bar TM S DIP B&P  Sticky efficiency at same slot velocity seems to be same with C-bar TM S and Q  Sticky efficiency is better with lower slot velocity

29 title, author short name | xx | 29 C-bar™ Q Baskets - Summary  Increased Production with same slot size – C-bar™ Q provides up to 20% more capacity than C-bar S basket  Improved Quality – Higher screening efficiency at low slot velocities  NDura material assures basket strength and lifetime (add. we offer chromium layser)  Basket Wear Measurement Tool – repeatable method for measuring basket wear over time – developed by Voith – value added  “C-bar™ Q just one part of Voith‘s “ screening toolbox“

30 title, author short name | xx | 30 C-bar™ / MF Rotor Combination Best screening efficiency / sticky and dirt removal

31 title, author short name | xx | 31 C-bar™ / MF Rotor Combination

32 Products for Saving Energy and Improving Technology: 1.Pulper 2.Coarse Screening 3.Slot Screening 4.Cleaning 5.Flotation 6.Refining

33 HW-Cleaner HCL5 – I and EcoMizer Technology

34 title, author short name | xx | 34 Technical Data HCL5-I: SizeHCL5-I Max admissible operation pressure4 bar Max admissible operation temperature70°C Pressure drop: Inlet  Outlet 1.5 – 2.0 bar Inlet flow range380 – 470 l/min Min required accept pressure0.1 bar Dilution water flow30 – 60 l/min Max Inlet stock consistency ≤ 3 % Schematic of the HCL5-I

35 title, author short name | xx | 35 HW cleaner HCL5-I with EcoMizer Technology Customer’s benefits EcoMizer feature for the HCL5 allows: Minimum number of cleaners. Minimum number of stages. Hydraulically optimized head design for maximum production and efficiency. High concentration of contaminants in the reject Minimum fiber losses. Fine cleaning at consistencies up to 3 % without reduced operational reliability. Transparent reject chamber easy inspection of reject flow.

36 title, author short name | xx | 36 EcoMizer™ Technology Principle  Back-flushing of fibers to the accept  Specific adjustment of reject consistency possible  Flow on cone wall remains unchanged  So reduction of reject without affecting separation efficiency

37 title, author short name | xx | 37 Fiber losses [%] Sand removal [%] EcoMizer™ Technology Influence on sand separation conventional cleaner (without back-flushing water) cleaner with tangential water injection EcoMizer™ Cleaner

38 title, author short name | xx | 38 Rebuild to EcoMizer technology Example: Stock prep Newsprint – A500T -1- Before Energy kW Fibre losses 3,67 t/d Reject 6,6 45% ash 7-stage cascade After Energy 945 kW Fibre losses 1,2 t/d Reject 4,3 72% ash 5-stage cascade Energy Fibre losses € € Savings € /year e 4e4e 1e1e 26 8 not needed anymore existing cleaner rebuild to EcoMizer™ Inlet Accept 1st step fibre loss reduction

39 Products for Saving Energy and Improving Technology: 1.Pulper 2.Coarse Screening 3.Slot Screening 4.Cleaning 5.Flotation 6.Refining

40 EcoCell LowEnergyFlotation 50% Energy Savings

41 title, author short name | xx | 41 Target: Reduction on energy consumption compared to standard applications by up to 50% at same quality demands. How:  Modification of injector technology  Optimized injector hydrodynamics  Optimized EcoCell hydrodynamics  High efficiency pumps LowEnergyFlotation The most efficient flotation concept, which saves up to 50% of energy

42 Products for Saving Energy and Improving Technology: 1.Pulper 2.Coarse Screening 3.Slot Screening 4.Cleaning 5.Flotation 6.Refining

43 title, author short name | xx | 43 Refining with PLURALIS – optimize your CEL

44 title, author short name | xx | 44 PLURALIS – Advantages of a new concept Small bars & optimized grooves = more same diameter More bars = more cutting edge length (CEL) More CEL = lower SEL = lower refining intensity possible Energy savings against standard designs = 10 – 20 % possible Specific edge load[J/m] = Net refining power [kW] Cutting edge length [km/s] Refining intensity

45 title, author short name | xx | 45 PLURALIS design = reduction of specific edge load SEL by increase of CEL more CEL b = bar width g = groove width b g b g lower same Technology

46 title, author short name | xx | Total spec. energy [kWh/t] Tensile index [Nm/g] Total spec. energy [kWh/t] Freeness [SR] Advantages by using Pluralis fillings Fillings typeSpec. edge load Pluralis 1 J/m Common Bleached Brazil Eucalypt pulp save Energy = COST SAVINGS boost Quality = TECHNOLOGY

47 title, author short name | xx | 47


Download ppt "Saving Energy Improving Technology Voith Paper Fiber & Environmental Solutions Ravensburg / Germany Eugen Loderer TAPPSA Conference Cape Town 23rd Sept."

Similar presentations


Ads by Google