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WO2000065150A9 - Gasification process for spent liquor at high temperature and high pressure - Google Patents

Gasification process for spent liquor at high temperature and high pressure

Info

Publication number
WO2000065150A9
WO2000065150A9 PCT/US2000/010995 US0010995W WO0065150A9 WO 2000065150 A9 WO2000065150 A9 WO 2000065150A9 US 0010995 W US0010995 W US 0010995W WO 0065150 A9 WO0065150 A9 WO 0065150A9
Authority
WO
WIPO (PCT)
Prior art keywords
liquor
gas
fuel gas
quenched
sweet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2000/010995
Other languages
French (fr)
Other versions
WO2000065150A1 (en
Inventor
Jerry D Blue
William Downs
Timothy A Fuller
Christopher L Verrill
Paul S Weitzel
Phung H M Chan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jacobs Canada Inc
Babcock and Wilcox Co
McDermott Technology Inc
Original Assignee
McDermott Engineers and Constructors Canada Ltd
Babcock and Wilcox Co
McDermott Technology Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by McDermott Engineers and Constructors Canada Ltd, Babcock and Wilcox Co, McDermott Technology Inc filed Critical McDermott Engineers and Constructors Canada Ltd
Priority to AU46596/00A priority Critical patent/AU4659600A/en
Priority to CA002370968A priority patent/CA2370968C/en
Publication of WO2000065150A1 publication Critical patent/WO2000065150A1/en
Anticipated expiration legal-status Critical
Publication of WO2000065150A9 publication Critical patent/WO2000065150A9/en
Ceased legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/12—Combustion of pulp liquors
    • D21C11/125—Decomposition of the pulp liquors in reducing atmosphere or in the absence of oxidants, i.e. gasification or pyrolysis
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C11/00—Regeneration of pulp liquors or effluent waste waters
    • D21C11/06—Treatment of pulp gases; Recovery of the heat content of the gases; Treatment of gases arising from various sources in pulp and paper mills; Regeneration of gaseous SO2, e.g. arising from liquors containing sulfur compounds
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2209/00—Specific waste
    • F23G2209/10—Liquid waste
    • F23G2209/101—Waste liquor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2215/00—Preventing emissions
    • F23J2215/20—Sulfur; Compounds thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2219/00—Treatment devices
    • F23J2219/30—Sorption devices using carbon, e.g. coke
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/30—Technologies for a more efficient combustion or heat usage
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Treating Waste Gases (AREA)
  • Paper (AREA)
  • Industrial Gases (AREA)

Abstract

A method and apparatus for producing clean, sweet, fuel gas for use in a combustion process by processing a waste stream from digestion of lignocellulosic material partially oxidizes the waste stream to form hot gases and molten salts and cools the hot gases and molten salts using a quench liquor to form quenched gas (76) and carbonate liquor (30). Particles are removed from the quenched gas to form a raw fuel gas by subjecting the quenched gas to a multi-step fume reduction process (80) which includes heat extraction (91) from the quenched gas to reduce particulate load and water content of the quenched gas to form a low fume fuel gas. H2S is removed from the low fume fuel gas using an H2S removal process (105) which is more selective for H2S than it is for CO2, the removing step forming clean, sweet, fuel gas and acid gases.

Claims

- 14 -CLAIMSWe claim:
1. A method for producing clean, sweet, fuel gas for use in a combustion process by processing a waste stream from digestion of lignocellulosic material, comprising: partially oxidizing the waste stream to form hot gases and molten salts; cooling the hot gases and molten salts using a quench liquor to form quenched gas and carbonate liquor; removing particles from the quenched gas to form a raw fuel gas by subjecting the quenched gas to a multi-step fume reduction process which includes heat extraction from the quenched gas to reduce particulate load and water content of the quenched gas to form a low fume fuel gas; removing H2S from the low fume fuel gas using an H2S removal process which is more selective for H2S than it is for CO2, the removing step forming clean, sweet, fuel gas and acid gases; and conveying the clean, sweet, fuel gas to a combustion process.
2. The method according to claim 1, wherein the multi-step fume reduction process comprises passing the quenched fuel gas through a first venturi scrubber, an electrostastic agglomerator, and a second venturi scrubber in series.
3. The method according to claim 1 , comprising subjecting the carbonate liquor to a causticizer to form a caustic liquor and lime mud, the lime mud comprising a suspension of calcium carbonate, and further processing the acid gases by combining the caustic liquor with the acid gases in a caustic liquor scrubber to form a tail gas and a sulfur-rich caustic liquor.
4. The method according to claim 3, comprising filtering the lime mud to separate the caustic liquor from the lime mud and washing the lime mud with water to produce weak wash. - 15 -
5. The method according to claim 4, comprising supplying the weak wash as part of the quench liquor for cooling of the hot gases.
6. The method according claim 5, comprising forming a condensate with dissolved fumes in the multi-step fume reduction process while removing particles from the quenched gas, and combining the condensate with dissolved fumes and the weak wash to form the quench liquor.
7. The method according to claim 3. comprising calcining the lime mud in a kiln to produce calcium oxide.
8. The method according to claim 7, comprising recycling the calcium oxide from the kiln to the causticizer.
9. The method according to claim 1, comprising the step of recovering sulfur from the low fume fuel gas.
10. The method according to claim 1, comprising processing a waste stream of black liquor.
11. The method according to claim 1 , comprising processing a waste stream of red liquor.
12. The method according to claim 1. comprising processing a waste stream of one of alkaline, acidic, and neutral sulfite spent liquor.
13. The method according to claim 1, comprising processing a waste stream of polysulfide spent liquor.
14. The method according to claim 1 , comprising conveying the clean, sweet, fuel gas to a combustor of a gas turbine coupled to an electric generator. - 16 -
15. The method according to claim 14, comprising producing hot exhaust gases in the gas turbine and conveying the hot exhaust gases to a waste heat boiler and producing steam in the waste heat boiler.
16. The method according to claim 15, comprising conveying steam from the waste heat boiler to a steam turbine coupled to an electric generator.
17. The method according to claim 1, comprising contacting one of hot water and steam obtained from the quenched gas as it is processed in the multi-step fume reduction process with the clean, sweet, fuel gas to increase the heat and water content of the clean, sweet, fuel gas.
18. A apparatus for producing clean, sweet, fuel gas for use in a combustion process by processing a waste stream from digestion of lignocellulosic material, comprising: gasifier means for partially oxidizing the waste stream to form hot gases and molten salts; quenching means for cooling the hot gases and molten salts using a quench liquor to form quenched gas and carbonate liquor; multi-step fume reduction process means for removing particles from the quenched gas to form a raw fuel gas which includes means for extracting heat and water from the quenched gas to reduce particulate load and water content of the quenched gas to form a low fume fuel gas;
H2S scrubbing means for removing H2S from the low fume fuel gas using an H2S removal process which is more selective for H2S than it is for CO2, the removing step forming clean, sweet, fuel gas and acid gases; and means for conveying the clean, sweet, fuel gas to a combustion process.
19. The apparatus according to claim 18, wherein the multi-step fume reduction process means comprises a first venturi scrubber, an electrostastic agglomerator, and a second venturi scrubber in series. - 17 -
20. The apparatus according to claim 18, comprising means for providing the carbonate liquor to causticizer means to form a caustic liquor and lime mud, the lime mud comprising a suspension of calcium carbonate, said processing means including means for combining the caustic liquor with the acid gases in a caustic liquor scrubber to form a tail gas and a sulfur-rich caustic liquor.
21. The apparatus according to claim 20, comprising means for filtering the lime mud to separate the caustic liquor from the lime mud and means for washing the lime mud with water to produce weak wash.
22. The apparatus according to claim 21 , comprising means for supplying the weak wash as part of the quench liquor for cooling of the hot gases.
23. The apparatus according to claim 22, comprising means for forming a condensate with dissolved fumes in the muti-step fume reduction process while removing particles from the quenched gas, and means for combining the condensate with dissolved fumes and the weak wash together to form the quench liquor.
24. The apparatus according to claim 20, comprising means for calcining the lime mud in a kiln to produce calcium oxide.
25. The apparatus according to claim 24, comprising means for recycling the calcium oxide from the kiln to the causticizer means.
26. The apparatus according to claim 18, comprising means for recovering sulfur from the low fume fuel gas.
27. The apparatus according to claim 18, wherein the waste stream comprises black liquor.
28. The apparatus according to claim 18, wherein the waste stream comprises red liquor. - 18 -
29. The apparatus according to claim 18, wherein the waste stream comprises one of alkaline, acidic, and neutral sulfite spent liquor.
30. The apparatus according to claim 18, wherein the waste stream comprises polysulfide spent liquor.
31. The apparatus according to claim 18, comprising means for conveying the clean, sweet, fuel gas to a combustor of a gas turbine coupled to an electric generator.
32. The apparatus according to claim 31 , wherein the gas turbine produces hot exhaust gases and comprising means for conveying the hot exhaust gases to a waste heat boiler to produce steam in the waste heat boiler.
33. The apparatus according to claim 32, comprising means for conveying steam from the waste heat boiler to a steam turbine coupled to an electric generator.
34. The apparatus according to claim 18, comprising means for contacting one of hot water and steam obtained from the quenched gas as it is processed in the multi-step fume reduction process with the clean, sweet, fuel gas to increase the heat and water content of the clean, sweet, fuel gas.
PCT/US2000/010995 1999-04-23 2000-04-21 Gasification process for spent liquor at high temperature and high pressure Ceased WO2000065150A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU46596/00A AU4659600A (en) 1999-04-23 2000-04-21 Gasification process for spent liquor at high temperature and high pressure
CA002370968A CA2370968C (en) 1999-04-23 2000-04-21 Gasification process for spent liquor at high temperature and high pressure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US29853399A 1999-04-23 1999-04-23
US09/298,533 1999-04-23

Publications (2)

Publication Number Publication Date
WO2000065150A1 WO2000065150A1 (en) 2000-11-02
WO2000065150A9 true WO2000065150A9 (en) 2002-04-18

Family

ID=23150927

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/010995 Ceased WO2000065150A1 (en) 1999-04-23 2000-04-21 Gasification process for spent liquor at high temperature and high pressure

Country Status (3)

Country Link
AU (1) AU4659600A (en)
CA (1) CA2370968C (en)
WO (1) WO2000065150A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101012925B (en) * 2007-01-31 2012-08-22 徐建明 Recycle burning utilization method reclaimed exhaust generated by combustion of hydrocarbon fuel and water or water vapour
EP2592186A1 (en) * 2011-11-08 2013-05-15 Södra Cell AB Kraft pulping process
CN111468510A (en) * 2020-04-20 2020-07-31 华电电力科学研究院有限公司 Device and method for treating alkaline hazardous waste by using clean flue gas of coal-fired power plant

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU4621379A (en) * 1978-09-15 1980-03-20 Electric Power Research Institute, Inc. Enhancing removal of fly ash by electrostatic precipitators using agglomeration technique
US4773918A (en) * 1984-11-02 1988-09-27 Rockwell International Corporation Black liquor gasification process
US4917024A (en) * 1989-05-24 1990-04-17 Florida Institute Of Phosphate Research Coal fired power plant with pollution control and useful byproducts
US5284550A (en) * 1992-06-18 1994-02-08 Combustion Engineering, Inc. Black liquier gasification process operating at low pressures using a circulating fluidized bed

Also Published As

Publication number Publication date
AU4659600A (en) 2000-11-10
CA2370968A1 (en) 2000-11-02
WO2000065150A1 (en) 2000-11-02
CA2370968C (en) 2006-02-14

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