BE779632A - Sulphur dioxide removal - from gas by contacting with aqs sodium sulphite soln to form sodium bisulphite soln and heating bisulphite - Google Patents

Sulphur dioxide removal - from gas by contacting with aqs sodium sulphite soln to form sodium bisulphite soln and heating bisulphite

Info

Publication number
BE779632A
BE779632A BE779632A BE779632A BE779632A BE 779632 A BE779632 A BE 779632A BE 779632 A BE779632 A BE 779632A BE 779632 A BE779632 A BE 779632A BE 779632 A BE779632 A BE 779632A
Authority
BE
Belgium
Prior art keywords
soln
bisulphite
sulphite
sulphur dioxide
gas
Prior art date
Application number
BE779632A
Other languages
French (fr)
Inventor
C B Earl
F Hughes
Original Assignee
Wellman Power Gas 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 Wellman Power Gas Inc filed Critical Wellman Power Gas Inc
Publication of BE779632A publication Critical patent/BE779632A/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
    • B01D53/485—Sulfur compounds containing only one sulfur compound other than sulfur oxides or hydrogen sulfide
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B17/00—Sulfur; Compounds thereof
    • C01B17/48—Sulfur dioxide; Sulfurous acid
    • C01B17/50—Preparation of sulfur dioxide
    • C01B17/60—Isolation of sulfur dioxide from gases

Landscapes

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

Abstract

Sulphur dioxide is removed froma gas by (a) contacting the gas with a thin aqs. absorption soln. of sodium, lithium or beryllium sulphite in an absorption column so that sulphur dioxide is absorbed in the gas with conversion of sulphite into bisulphite and formation of used absorption soln. contg. the corresponding metal bisulphite, (b) exposing the used soln. in a desorption zone to temps. high enough to decompose the bisulphute into sulphite, sulphur dioxide and water, (c) removing sulphur dioxide and water from the desorption zone and precipitating the sulphite from the soln. until the formed slurry contains >=25% wt. undissolved solids, (d) passing the slurry from the desorption zone through the tubes of an indirect heat exchanger with supply of heat to the slurry, and (e) recycling the sulphite of the slurry to the absorption zone.
BE779632A 1971-02-22 1972-02-21 Sulphur dioxide removal - from gas by contacting with aqs sodium sulphite soln to form sodium bisulphite soln and heating bisulphite BE779632A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11738371A 1971-02-22 1971-02-22

Publications (1)

Publication Number Publication Date
BE779632A true BE779632A (en) 1972-08-21

Family

ID=22372617

Family Applications (1)

Application Number Title Priority Date Filing Date
BE779632A BE779632A (en) 1971-02-22 1972-02-21 Sulphur dioxide removal - from gas by contacting with aqs sodium sulphite soln to form sodium bisulphite soln and heating bisulphite

Country Status (9)

Country Link
JP (1) JPS5137631B1 (en)
BE (1) BE779632A (en)
BR (1) BR7200876D0 (en)
ES (1) ES400063A1 (en)
IT (1) IT948632B (en)
NO (1) NO130978C (en)
SE (1) SE382966B (en)
SU (1) SU860679A1 (en)
ZA (1) ZA7245B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51157922U (en) * 1975-06-10 1976-12-16
JPS5384718U (en) * 1976-12-15 1978-07-13
FI73603C (en) * 1985-06-17 1987-11-09 Catena Oy Process for collecting and utilizing the sulfur dioxide in sulfur-containing gases such as flue gases.
WO1993001881A1 (en) * 1991-07-23 1993-02-04 Rauma Wood International Ltd. Method and apparatus for recovery of sulfur and/or nitrogen oxides from gases containing such oxides
CN105771532A (en) * 2016-04-26 2016-07-20 中冶南方工程技术有限公司 Flue gas desulfurizer through condensation

Also Published As

Publication number Publication date
ZA7245B (en) 1972-09-27
SU860679A1 (en) 1981-08-30
NO130978C (en) 1975-03-19
IT948632B (en) 1973-06-11
BR7200876D0 (en) 1973-05-24
SE382966B (en) 1976-02-23
JPS5137631B1 (en) 1976-10-16
NO130978B (en) 1974-12-09
ES400063A1 (en) 1974-12-16

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: WELLMAN POWER GAS INC.

Effective date: 19890228