SE304342B - - Google Patents

Info

Publication number
SE304342B
SE304342B SE812165A SE812165A SE304342B SE 304342 B SE304342 B SE 304342B SE 812165 A SE812165 A SE 812165A SE 812165 A SE812165 A SE 812165A SE 304342 B SE304342 B SE 304342B
Authority
SE
Sweden
Prior art keywords
stage
h2seo3
h2so4
content
gases
Prior art date
Application number
SE812165A
Inventor
K Emicke
Original Assignee
Norddeutsche Affinerie
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 Norddeutsche Affinerie filed Critical Norddeutsche Affinerie
Publication of SE304342B publication Critical patent/SE304342B/xx

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
    • 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
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/74—Preparation
    • C01B17/76—Preparation by contact processes
    • C01B17/775—Liquid phase contacting processes or wet catalysis processes
    • 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
    • C01B17/69—Sulfur trioxide; Sulfuric acid
    • C01B17/90—Separation; Purification

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (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)
  • Treating Waste Gases (AREA)

Abstract

SO2 is removed from gases by passing them countercurrent to aq. H2SeO3 in at least two stages, the Se formed in the first stage being completely removed from the liquor circulating in this stage, and the SO2 being completely removed from the gases in the second stage. The first stage may be operated discontinuously adding fresh H2SeO3 intermittently, after withdrawing a portion of the exhausted liquor. The Se may be removed from the H2SO4 -containing soln. withdrawn from the first stage and oxidized to H2SeO3 which is used to maintain to H2SeO3 content in the second stage. The product H2SO4 soln. may be concentrated by evaporation e.g. by passing the hot gases to be treated therethrough. The second stage may be operated continuously and the H2SeO3 content may be maintained at above stoichiometric requirements e.g. at 42 g. SeO2/l, and the H2SO4 content may be kept to a minimum e.g. 77 g./l.
SE812165A 1964-06-18 1965-06-18 SE304342B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEN0025135 1964-06-18

Publications (1)

Publication Number Publication Date
SE304342B true SE304342B (en) 1968-09-23

Family

ID=7343312

Family Applications (1)

Application Number Title Priority Date Filing Date
SE812165A SE304342B (en) 1964-06-18 1965-06-18

Country Status (4)

Country Link
BE (1) BE665484A (en)
FR (1) FR1450590A (en)
GB (1) GB1107626A (en)
SE (1) SE304342B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
LU85454A1 (en) * 1984-07-06 1985-09-12 Euratom METHOD AND DEVICE FOR REMOVING SULFUR DIOXIDE FROM HOT EXHAUST GASES
US5965095A (en) * 1997-05-05 1999-10-12 Electric Power Research Inst. Flue gas humidification and alkaline sorbent injection for improving vapor phase selenium removal efficiency across wet flue gas desulfurization systems
CN114712979B (en) * 2021-01-05 2023-09-01 中冶长天国际工程有限责任公司 Quick judging SO in flue gas purification process 2 Adsorption efficiency method and system

Also Published As

Publication number Publication date
BE665484A (en) 1965-10-01
FR1450590A (en) 1966-08-26
GB1107626A (en) 1968-03-27

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