Cansolv Technologies Inc. Air and Waste Management Association South Coast AQMD May 14, Rick Birnbaum

Transcription

1 A Versatile SO 2 Scrubbing Process For Industrial SO 2 Emission Control Air and Waste Management Association South Coast AQMD May 14, 2008 Rick Birnbaum rick.birnbaum@cansolv.com

2 OUTLINE Gas Absorption Solutions CANSOLV Technologies Inc. SO 2 Scrubbing Amine Chemistry SO 2 Scrubbing for Power and Industrial Boilers SO 2 Scrubbing for Fluid Cat Cracking Units SO 2 Scrubbing for Sulfur Plants SO 2 Scrubbing for Sulfuric Acid Plants Operating Units CANSOLV CO 2 Capture System

3 COMPANY HISTORY Gas Absorption Solutions Cansolv SO 2 Scrubbing System invented in 1988 at Union Carbide Key employee buyout of technology in 1997 Technology Optimization - SO 2 and CO 2 9 Operating Plants 5 Licensed Units 45 Staff in Montreal, Canada; 10 staff in Shen Zhen, China

4 CANSOLV SO 2 SCRUBBING SYSTEM A regenerable SO 2 absorption process Similar to H 2 S/CO 2 amine treaters Uses conventional equipment Aqueous diamine solvent is highly selective for SO 2

5 CANSOLV SO 2 SCRUBBING SYSTEM Pure, water-saturated SO 2 byproduct A very robust, easy to operate process Almost zero emissions at low cost Patented technology

6 AMINE ABSORBENT Gas Absorption Solutions The unique diamine absorbent is the key to the CANSOLV SO 2 Scrubbing System technology The first amine group is always in salt form providing absorbent non-volatility The second amine has the optimum strength for balanced absorption and regeneration

7 PROCESS CHEMISTRY Gas Absorption Solutions Identical in concept to Amine/H 2 S chemistry Operates at ph range of 4.8 to 5.2 vs 9.7 to 11 Aqueous diamine solvent solution Buffering provides high capacity for SO 2 absorption Proprietary solvent has the proper absorption/desorption strength Solvent amine is non-volatile since it is always in salt form Regeneration provides pure, water saturated SO 2 as byproduct

8 CANSOLV SO 2 Scrubbing System Flow Diagram Prescrubber Amine Purification/ Unit (APU) Regen O/H System Amine Absorber Regenerator To SO 2 Conversion Flue Gas Clean Flue Gas To Stack Hot Atm Pr. May be dusty Contains H 2 O SO 2 and SO o C mm H 2 O Pr < 30 mg/nm3 Dust Water saturated APS Sulfur Containing Fuel or Feed Stream Combustion And Heat Recovery Gas Cleaning And Cooling Steam Combustion System Boiler, Heater, Combuster, Incinerator, Catalyst Regenerator Flue Gas Pretreatment Heat recovery - WHB Dust removal - Open/Vent Prescrub SO 3 removal - SBS/WESP/Candles SO 2 Management SO 2 Capture SO 2 Regeneration

9 OVERVIEW OF CANSOLV PROCESS No capture of CO 2 Stainless steel metallurgy required for ph 5 Corrosion allowance minimal with stainless steel Feed gas frequently contains solids requiring constant filtration of amine HSS must be managed due to oxidized gas feed Continuous Amine Purification Unit (APU) required Amine stable to O 2 Operation and control is straightforward Can achieve low (<10 ppmv ) SO 2

10 Range of Effluent ppm SO 2 % Removal 95% 125 ppm 97% 75 ppm 98% 50 ppm 99+% < 25 ppm - % Removal Based on 2500 ppm inlet - Outlet SO 2 expressed in as is condition for O 2 ; H 2 O Standard Cansolv + Steam + Steam + FG Cooling + Steam + FG Cooling + Polishing

11 Range of Treatment Cost - Standard Cansolv Annualized Cost 95% 125 ppm 97% 75 ppm 98% 50 ppm 99+% < 25 ppm - % Removal Based on 2500 ppm inlet -Outlet SO 2 expressed in as is condition for O 2 ; H 2 O Standard Cansolv + Steam + Steam + FG Cooling + Steam + FG Cooling + Polishing

12 Range of Treatment Cost - Low Energy CANSOLV Annualized Cost 95% 125 ppm 97% 75 ppm 98% 50 ppm 99+% < 25 ppm - % Removal Based on 2500 ppm inlet -Outlet SO 2 expressed in as is condition for O 2 ; H 2 O Standard Cansolv + Steam + Steam + FG Cooling + Steam + FG Cooling + Polishing

13 Range of Effluent ppm SO 2 - Sulfuric Acid % Removal 99+% < 25 ppm 99+% < 10 ppm Alternate Strategies Not Required to Reduce SO 2 Further - % Removal Based on 2500 ppm inlet - Outlet SO 2 expressed in as is condition for O 2 ; H 2 O Standard Cansolv + Steam

14 APPLICATIONS Gas Absorption Solutions Application Criteria Benefits Boiler/Htr Systems SO 2 - High sulfur fuel - Poor access to limestone - Access to H 2 SO 4 market - Fire high sulfur fuels - Earn revenue from acid FCC Regen Gas SO 2 - High sulfur cat feed - Poor access to waste disposal sites - Incorporate SO 2 into existing sulfur systems Claus Tail Gas SO 2 - >99.9% S capture required - Increase capacity in SRU - Treats other sulfur streams for profit potential - Fewer exceedences - Can use sour gas for TOX and earn revenue H 2 SO 4 Tail Gas SO 2 - Treats to <10 ppm SO 2 - Disposes of SO 2 into acid plant - Can retrofit existing single absorption acid plant

15 CANSOLV SO 2 Power Boiler System Flow Diagram Utility Boiler Economizer Air to Air Exchange ESP Prescrubber Amine Absorber Amine Purification/ Unit (APU) Regenerator Regen O/H System To SO 2 Conversion To Stack Fuel APS Air Bottom Ash Combustion System Boiler Air to Air Exchange Fly Ash Wash H 2 O Waste H 2 O Flue Gas Pretreatment SO 3 removal - SBS/WESP Dust removal - Dry ESP Quench/Cool - Prescrub SO 2 Management SO 2 Capture SO 2 Regeneration Steam

16 CANSOLV SO 2 FCCU Regen DeSOx System Flow Diagram Cat Regen CO Boiler Heat Recovery ESP Prescrubber Amine Absorber Amine Purification/ Unit (APU) Regenerator Regen O/H System To SO 2 Conversion CO Boiler To Stack APS Cat Regen Steam Air FCC Catalyst Regenerator Fly Ash Wash H 2 O Waste H 2 O Flue Gas Pretreatment SO 3 removal - SBS/WESP Dust removal - Dry ESP Quench/Cool - Prescrub SO 2 Management SO 2 Capture SO 2 Regeneration

17 Air 2 Stage Claus with CANSOLV and Acid Gas Bypass Amine A/G SWS A/G Reactor WHB 1st Stage 2nd Stage Sulfur Sulfur Sulfur To Stack Regenerator Amine Absorber Venturi Prescrubber Cooler and SO 3 Removal Incinerator/ Waste Heat Boiler Purge Air Fuel

18 Sulfuric Acid Tail Gas ABSORPTION COLUMN Treated Gas to Stack Impurities to Blowdown AMINE PURIFICATION UNIT REGENERATION COLUMN SO 2 Product Steam Sulfur M/U Water Rich Amine Acid Plant Tail Gas Lean Amine Condensate DRYING TOWER SULFUR BURNER ACID PLANT 98% H 2 SO 4 Air

19 Smelter/Sulfuric Acid Tail Gas ABSORPTION COLUMN Treated Gas to Stack Impurities to Blowdown AMINE PURIFICATION UNIT REGENERATION COLUMN SO 2 Product Steam M/U Water Rich Amine Acid Plant Tail Gas Lean Amine Condensate Smelter Off Gas GAS CLEANING DRYING TOWER ACID PLANT 98% H 2 SO 4 Air

20 Commercial Units Application Gas Absorption Solutions Location Flow (scfm) Size MW equiv SO 2 Concentration Target SO 2 Emissions Status Incinerator Tail Gas (Claus) Belgium 7,500 n/a 1 % <30 ppm Oper. since 2002 Concentrated Acid Gas Canada 3,700 n/a 8-10% 30 ppm Oper. since 2002 Acid Plant Tail Gas US 25,000 n/a 5000 ppm 15 ppm Oper. since 2002 FCCU CO Boiler Flue Gas Coker CO Boiler Flue Gas Metallurgical Off-gas Claus plant tail gas Anode Furnace Off- Gas US US 267, ppm 25 ppm Started up Sept India US China 460,000 21,000 11,000 27,000 n/a n/a ppm 25 ppm Started up Dec n/a 0.1 to 12.5 % 4% 900 ppm-1.92% 150 ppm 200 ppm 100ppm Started up Dec Started up July 2006 In Startup

21 Application Location Flow (scfm) Size MW equiv SO 2 Concentration Target SO 2 Emissions Status Cogen boiler flue gas China 580, ppm 140 ppm Procurement Catalyst recovery roaster Canada 30,000 n/a 9100ppm 100ppm Construction Metallurgical Off-gas China 52,000 n/a 1000ppm / 5.5% 140 ppm Engineering Catalyst Recovery Roaster US 137,000 n/a 3000 ppm 100 ppm Engineering FCC Regen Gas DeSOx India 964,000 n/a 3000 ppm 100 ppm Engineering FCC Regen Gas DeSOx US 348,000 n/a 1500 ppm 10 ppm Engineering

22 Commercial Unit - Pictures

23 CANSOLV SRU Tail Gas Unit - Antwerp Belgium

24 SO 2 Capture and Transport - Quebec

25 Spent Acid Regeneration Tail Gas Wilmington CA

26 Lead Smelter Off-Gas Plant Rajastan India

27 Refinery USA FCC Regen Off-Gas Fluid Coker Off-Gas

28 SRU Tail Gas Scrubber, Refinery Washington State, USA

29 CHINA GRASS ROOTS COPPER ANODE FURNACE

30 CANSOLV CO 2 Scrubbing System RWE names carbon capture and storage project partners ( ) RWE npower on Thursday announced it had already formed a partnership with five companies to deliver its planned carbon capture and storage (CCS) demonstration project. The partners announced by RWE npower include: BOC; Cansolv Technologies; IM Skaugen; The Shaw Group and Tullow Oil, encompassing the full range of expertise needed to demonstrate carbon capture, transport and eventual undersea storage. Discussions are continuing to take place with other leading international companies also interested in the project.

31 CANSOLV CO 2 Scrubbing System Treated Gas to Stack Impurities to Blowdown REGENERATION COLUMN CO2 to Compression ABSORPTION COLUMN AMINE PURIFICATION UNIT Water Wash Lean Amine CO2 Absorber Rich P/A Feed Gas Feed Gas Contact Cooler Steam Purge Water Rich Amine Condensate

32 Integrated CANSOLV SO 2 /CO 2 Scrubbing System Treated Gas to Stack ABSORPTION COLUMN Water Wash Impurities to Blowdown CO 2 AMINE PURIFICATION UNIT CO 2 Regenerator Column CO 2 Product Steam Cond. Feed Gas In Line Quench Impurities to Blowdown SO 2 Product SO 2 AMINE PURIFICATION UNIT SO 2 Regenerator Column M/U Water Steam Rich Amine Condensate

33 QUESTIONS?