MY112500A - Exhaust gas desulfurization process - Google Patents

Exhaust gas desulfurization process

Info

Publication number
MY112500A
MY112500A MYPI96000488A MYPI19960488A MY112500A MY 112500 A MY112500 A MY 112500A MY PI96000488 A MYPI96000488 A MY PI96000488A MY PI19960488 A MYPI19960488 A MY PI19960488A MY 112500 A MY112500 A MY 112500A
Authority
MY
Malaysia
Prior art keywords
treating fluid
desulfurization
exhaust gas
gas desulfurization
sulfur oxides
Prior art date
Application number
MYPI96000488A
Inventor
Nakagawa Kenichi
Original Assignee
Toyo Engineering Corp
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 Toyo Engineering Corp filed Critical Toyo Engineering Corp
Publication of MY112500A publication Critical patent/MY112500A/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/48—Sulfur compounds
    • B01D53/50—Sulfur oxides
    • B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/46—Removing components of defined structure
    • B01D53/68—Halogens or halogen compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/40—Alkaline earth metal or magnesium compounds
    • B01D2251/402—Alkaline earth metal or magnesium compounds of magnesium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/40—Alkaline earth metal or magnesium compounds
    • B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2251/00—Reactants
    • B01D2251/60—Inorganic bases or salts
    • B01D2251/604—Hydroxides

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treating Waste Gases (AREA)

Abstract

IN AN EXHAUST GAS DESULFURIZATION PROCESS WHEREIN SULFUR OXIDES AND HCI PRESENT IN EXHAUST GAS ARE ABSORBED INTO A TREATING FLUID CONTAINING A MG-BASED DESULFURIZING AGENT, AND THE TREATING FLUID IS CIRCULATED THROUGH DESULFURIZATION (1), OXIDATION (3) AND DOUBLE DECOMPOSITION (4) STEPS TO FIX AND REMOVE THE SULFUR OXIDES IN THE FORM OF GYPSUM DIHYDRATE BY ADDING CALCIUM HYDROXIDE TO THE TREATING FLUID AND, AT THE SAME TIME, TO REGENERATE THE TREATING FLUID, A PORTION OF THE DESULFURIZATION STEP TREATING FLUID IS ADDED TO THE TREATING FLUID OBTAINED IN THE DOUBLE DECOMPOSITION STEP SO AS TO REMOVE CALCIUM IONS THEREFROM, AND THE TREATING FLUID THUS OBTAINED IS THEN RECYCLED TO THE DESULFURIZATION STEP (1). THIS PROCESS MAKES IT POSSIBLE TO EFFECT EXHAUST GAS DESULFURIZATION ACCORDING TO THE DOUBLE ALKALI TECHNIQUE WHILE USING SIMPLE AND SMALL-SIZED EQUIPMENT AND TO MAINTAIN STABLE OPERATION WITHOUT SCALE DEPOSITION IN THE DESULFURIZATION TOWER.FIGURE 3
MYPI96000488A 1995-08-22 1996-02-09 Exhaust gas desulfurization process MY112500A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21329695A JP3751340B2 (en) 1995-08-22 1995-08-22 Exhaust gas desulfurization method

Publications (1)

Publication Number Publication Date
MY112500A true MY112500A (en) 2001-06-30

Family

ID=16636779

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI96000488A MY112500A (en) 1995-08-22 1996-02-09 Exhaust gas desulfurization process

Country Status (8)

Country Link
JP (1) JP3751340B2 (en)
KR (1) KR0174794B1 (en)
CN (1) CN1089022C (en)
AU (1) AU674822B1 (en)
CZ (1) CZ56196A3 (en)
MY (1) MY112500A (en)
PL (1) PL183184B1 (en)
TW (1) TW326404B (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW421607B (en) * 1997-10-06 2001-02-11 Hitachi Shipbuilding Eng Co Process and apparatus for removing acid gases from exhaust gases
CN1085088C (en) * 1998-03-11 2002-05-22 安乐仁 Medicine for treating psoriasis
KR100303388B1 (en) * 1999-06-02 2001-09-24 세 영 모 Aaaaa
CN100335154C (en) * 2005-09-09 2007-09-05 清华大学 Magnesium oxide flue gas desulfurization and outgrowth thick-slurry method oxidation reclaim process
CN100404108C (en) * 2005-12-08 2008-07-23 六合天融（北京）环保科技有限公司 Method for preparing desulfurizer magnesium oxide and sulfur dioxide by utilizing magnesium method desulfurization by-product magnesium sulfite
CN100435910C (en) * 2006-04-10 2008-11-26 广州市天赐三和环保工程有限公司 Multi-circulation stable double-alkali flue gas desulfurization process and device
CN101879406B (en) * 2010-07-15 2011-05-25 煤炭工业济南设计研究院有限公司 Dual-alkali flue gas desulfurization device and desulfurization method
CN102172472B (en) * 2011-02-14 2013-05-08 彭振超 Method for smoke desulphurization by utilizing dolomitic lime
JP6223654B2 (en) * 2011-10-31 2017-11-01 三菱日立パワーシステムズ株式会社 Flue gas desulfurization equipment
TWI457167B (en) * 2011-11-18 2014-10-21 Long Chen Paper Co Ltd Apparatus for flue gas desulfurization with zero emission using system for recovery and recycle of magnesium hydroxide
CN104959012A (en) * 2015-04-17 2015-10-07 熊天渝 Magnesium-calcium based wet method desulphurization system and method for removing sulfur dioxide in flue gas and producing gypsum
CN107042060B (en) * 2017-04-05 2022-12-13 中冶焦耐(大连)工程技术有限公司 Recycling method of ammonia-containing acidic gas
CN107185385A (en) * 2017-07-07 2017-09-22 金川集团股份有限公司 A kind of spuious flue gas during smelting wet dedusting of atm number, sulfur method
JP6958682B2 (en) * 2018-08-08 2021-11-02 宇部興産株式会社 Cement composition manufacturing method and cement composition manufacturing system
CN110605011A (en) * 2019-08-08 2019-12-24 陆泳凯 Magnesium-calcium double-alkali flue gas desulfurization method
CN116124939B (en) * 2023-01-10 2024-03-26 华北电力科学研究院有限责任公司 Desulfurization slurry gypsum supersaturation degree and gypsum scaling risk evaluation method and system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5190978A (en) * 1975-02-04 1976-08-10 HAIGASUCHUNOIOSANKABUTSUOJOKYOSURUHOHO
JPS5488870A (en) * 1978-08-08 1979-07-14 Idemitsu Kosan Co Ltd Wet exhaust gas desulfurization method
CA1310807C (en) * 1986-05-29 1992-12-01 Roderick Beittel Method for reduction of sulfur products from flue gases by injection of powdered alkali sorbent at intermediate temperatures
JPH03143527A (en) * 1989-01-10 1991-06-19 Kenichi Nakagawa Method for desulfurizing waste gas
CA2147059C (en) * 1994-04-28 1999-08-10 John W. College Magnesium-enhanced sulfur dioxide scrubbing with gypsum formation
CA2159521C (en) * 1994-10-07 1999-11-09 Shigeo Iiyama Method for desulfurizing exhaust gas

Also Published As

Publication number Publication date
AU674822B1 (en) 1997-01-09
JPH0957053A (en) 1997-03-04
CN1089022C (en) 2002-08-14
CN1143535A (en) 1997-02-26
KR970009863A (en) 1997-03-27
KR0174794B1 (en) 1999-02-18
PL313006A1 (en) 1997-03-03
TW326404B (en) 1998-02-11
JP3751340B2 (en) 2006-03-01
CZ56196A3 (en) 1997-07-16
PL183184B1 (en) 2002-06-28

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