GB1331114A - Purification of sulphurous gaseous effluents - Google Patents

Purification of sulphurous gaseous effluents

Info

Publication number
GB1331114A
GB1331114A GB5350470A GB5350470A GB1331114A GB 1331114 A GB1331114 A GB 1331114A GB 5350470 A GB5350470 A GB 5350470A GB 5350470 A GB5350470 A GB 5350470A GB 1331114 A GB1331114 A GB 1331114A
Authority
GB
United Kingdom
Prior art keywords
temperature
nov
liquor
salts
cooling
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.)
Expired
Application number
GB5350470A
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.)
SHALE CORP
Original Assignee
SHALE 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 SHALE CORP filed Critical SHALE CORP
Publication of GB1331114A publication Critical patent/GB1331114A/en
Expired legal-status Critical Current

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

Abstract

1331114 Treatment of effluent gases SHALE CORP 10 Nov 1970 [12 Nov 1969] 53504/70 Heading C1A SO 2 is removed from a hot gas stream (>250‹ C.) by mixing with water followed by NH 3 gas (1-3 moles per mole of SO 2 ) at a temperature above the decomposition temperature of (NH 4 ) 2 SO 3 , then cooling to below said decomposition temperature to form NH 4 <SP>+</SP> salt particles, and removing said particles. NO 2 in the gas stream is also removed as NH 4 NO 2 or NH 4 NO 2 and SO 3 is removed as (NH 4 ) 2 SO 4 . The temperature of the gas mixture during NH 3 addition is preferably at least 160‹ F. Entrained salt particles may be removed by scrubbing, and NH 3 regenerated from the scrubbing solution by (a) heating to at least 250‹ F. to form NH 3 and SO 2 which is passed over hot ZnO, CaO, PbO, MnO, MgO or calcined dolomite to absorb SO 2 , (b) by precipitating Ca salts from the liquor and heating to drive off NH 3 , or (c) by recycling the liquor to concentrate it, then cooling to crystallize NH 4 salts which may be decomposed and the gases separated as in (a).
GB5350470A 1969-11-12 1970-11-10 Purification of sulphurous gaseous effluents Expired GB1331114A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US87612369A 1969-11-12 1969-11-12

Publications (1)

Publication Number Publication Date
GB1331114A true GB1331114A (en) 1973-09-19

Family

ID=25367041

Family Applications (2)

Application Number Title Priority Date Filing Date
GB133114D Active GB133114A (en) 1969-11-12
GB5350470A Expired GB1331114A (en) 1969-11-12 1970-11-10 Purification of sulphurous gaseous effluents

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB133114D Active GB133114A (en) 1969-11-12

Country Status (4)

Country Link
BE (1) BE758663A (en)
CA (1) CA931328A (en)
DE (1) DE2053549A1 (en)
GB (2) GB1331114A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103908884A (en) * 2014-04-04 2014-07-09 泰兴电除尘设备厂有限公司 Zinc oxide slurry for flue gas desulfurization
CN110813089A (en) * 2019-10-28 2020-02-21 铜陵有色设计研究院 Zinc sulfite clear solution circulating desulfurization device and method for zinc smelting system and application
CN114887456A (en) * 2022-03-07 2022-08-12 蒲城清洁能源化工有限责任公司 Ammonium bicarbonate crystallization prevention system for low-temperature methanol washing process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103908884A (en) * 2014-04-04 2014-07-09 泰兴电除尘设备厂有限公司 Zinc oxide slurry for flue gas desulfurization
CN110813089A (en) * 2019-10-28 2020-02-21 铜陵有色设计研究院 Zinc sulfite clear solution circulating desulfurization device and method for zinc smelting system and application
CN114887456A (en) * 2022-03-07 2022-08-12 蒲城清洁能源化工有限责任公司 Ammonium bicarbonate crystallization prevention system for low-temperature methanol washing process

Also Published As

Publication number Publication date
CA931328A (en) 1973-08-07
DE2053549A1 (en) 1971-05-19
GB133114A (en)
BE758663A (en) 1971-04-16

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees