FR2323632A1 - Sulphur dioxide removal from waste gas - using aq. sulphuric acid contg. manganese salt, oxygen and ionising radiation as activator - Google Patents

Sulphur dioxide removal from waste gas - using aq. sulphuric acid contg. manganese salt, oxygen and ionising radiation as activator

Info

Publication number
FR2323632A1
FR2323632A1 FR7432695A FR7432695A FR2323632A1 FR 2323632 A1 FR2323632 A1 FR 2323632A1 FR 7432695 A FR7432695 A FR 7432695A FR 7432695 A FR7432695 A FR 7432695A FR 2323632 A1 FR2323632 A1 FR 2323632A1
Authority
FR
France
Prior art keywords
activator
waste gas
h2so4
contg
soln
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.)
Granted
Application number
FR7432695A
Other languages
French (fr)
Other versions
FR2323632B1 (en
Inventor
Rimma Bronislavovna Baranova
Vladimir Ilich Lazarev
Nikolai Petrovich Mironov
Viktor Alexandrovich Pinaev
Lenar Timofeevich Bugaenko
Evgeny Petrovich Kalyazin
Alexandra Timofeevna Panferova
Vsevolod Mikhailovich Byakov
Jury Nikolaevich Nikeshichev
Evgeny Petrovich Petryaev
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.)
INST PROMY SANITARNO
Original Assignee
INST PROMY SANITARNO
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 INST PROMY SANITARNO filed Critical INST PROMY SANITARNO
Priority to FR7432695A priority Critical patent/FR2323632A1/en
Publication of FR2323632A1 publication Critical patent/FR2323632A1/en
Application granted granted Critical
Publication of FR2323632B1 publication Critical patent/FR2323632B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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

Abstract

In the processing of waste gases contg. SO2 by contact with an aq. H2SO4 soln. in the presence of O2 or air and an inorg. Mn salt (I) as catalyst, giving H2SO4 soln. contg. SO2, the use of an activator or SO2 to give a SO2-free H2SO4 soln., removal of aq. H2SO4 soln. from the system in an amt. equiv. to the amt. of SO2 oxidised and recycling the rest of the aq. H2SO4 soln. to the contact process, (I) is MnSO4, Mn(C104)2, MnCl2, Mn(NO3)2 or Mn3(PO4)2 and is used in an amt. of 0.0003-0.03 wt.% (as Mn ion) and the SO2-contg. aq. H2SO4 soln. from the contact stage is subjected to the action of ionising radiation as activator. The catalyst and activator are selected so that a high degree of extn. of SO2 from the waste gas is ensured at a relatively high concn. of H2SO4 (up to 50%, cf. max. 40% when O3 is used for oxidn.). The need for cooling of the waste gas before processing is eliminated.
FR7432695A 1974-09-27 1974-09-27 Sulphur dioxide removal from waste gas - using aq. sulphuric acid contg. manganese salt, oxygen and ionising radiation as activator Granted FR2323632A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7432695A FR2323632A1 (en) 1974-09-27 1974-09-27 Sulphur dioxide removal from waste gas - using aq. sulphuric acid contg. manganese salt, oxygen and ionising radiation as activator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7432695A FR2323632A1 (en) 1974-09-27 1974-09-27 Sulphur dioxide removal from waste gas - using aq. sulphuric acid contg. manganese salt, oxygen and ionising radiation as activator

Publications (2)

Publication Number Publication Date
FR2323632A1 true FR2323632A1 (en) 1977-04-08
FR2323632B1 FR2323632B1 (en) 1979-06-08

Family

ID=9143521

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7432695A Granted FR2323632A1 (en) 1974-09-27 1974-09-27 Sulphur dioxide removal from waste gas - using aq. sulphuric acid contg. manganese salt, oxygen and ionising radiation as activator

Country Status (1)

Country Link
FR (1) FR2323632A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2186285A1 (en) * 1972-05-31 1974-01-11 Air Liquide

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2186285A1 (en) * 1972-05-31 1974-01-11 Air Liquide

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ZEITSCHRIFT FUR ANORG. UND ALLG. CHEMIE, BAND 331, 1964, PAGES 289-306 R.SCHRADER ) *

Also Published As

Publication number Publication date
FR2323632B1 (en) 1979-06-08

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