FR2248234A1 - Contact process sulphuric acid with reduced mercury content - pref. below 5 ppm by adding sulphur to hot precessed gas - Google Patents

Contact process sulphuric acid with reduced mercury content - pref. below 5 ppm by adding sulphur to hot precessed gas

Info

Publication number
FR2248234A1
FR2248234A1 FR7430287A FR7430287A FR2248234A1 FR 2248234 A1 FR2248234 A1 FR 2248234A1 FR 7430287 A FR7430287 A FR 7430287A FR 7430287 A FR7430287 A FR 7430287A FR 2248234 A1 FR2248234 A1 FR 2248234A1
Authority
FR
France
Prior art keywords
pref
gas
hot
contact process
precessed
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
FR7430287A
Other languages
French (fr)
Other versions
FR2248234B3 (en
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.)
Electrolytic Zinc Company of Australasia Ltd
Original Assignee
Electrolytic Zinc Company of Australasia Ltd
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 Electrolytic Zinc Company of Australasia Ltd filed Critical Electrolytic Zinc Company of Australasia Ltd
Publication of FR2248234A1 publication Critical patent/FR2248234A1/en
Application granted granted Critical
Publication of FR2248234B3 publication Critical patent/FR2248234B3/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Treating Waste Gases (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

Conc. H2SO4 is mfd. by a contact process in which the hot gases arising from calcination of metal sulphides contg. Hg or its cpds. are passed through the stages of cooling and purificn., then drying, conversion and absorption. Elemental S is injected into the current of hot gases just prior to the cooling and purificn. stage, the gases pref. being in the temp. range 150 degrees to 400, (esp. 180 to 400) degrees C and the rate of injection being 5 x 10-6 to 5 x 10-3 (esp. 5 x 10-6 to 5 x 10-4) Kg of sulphur per m3 of gas.
FR7430287A 1973-10-22 1974-09-06 Contact process sulphuric acid with reduced mercury content - pref. below 5 ppm by adding sulphur to hot precessed gas Granted FR2248234A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPB533973 1973-10-22

Publications (2)

Publication Number Publication Date
FR2248234A1 true FR2248234A1 (en) 1975-05-16
FR2248234B3 FR2248234B3 (en) 1977-06-17

Family

ID=3765793

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7430287A Granted FR2248234A1 (en) 1973-10-22 1974-09-06 Contact process sulphuric acid with reduced mercury content - pref. below 5 ppm by adding sulphur to hot precessed gas

Country Status (10)

Country Link
JP (1) JPS5067796A (en)
BE (1) BE819361A (en)
DE (1) DE2441208A1 (en)
ES (1) ES430053A1 (en)
FI (1) FI251274A (en)
FR (1) FR2248234A1 (en)
NL (1) NL7412004A (en)
NO (1) NO742918L (en)
SE (1) SE7410462L (en)
ZA (1) ZA745333B (en)

Also Published As

Publication number Publication date
JPS5067796A (en) 1975-06-06
NO742918L (en) 1975-04-23
FI251274A (en) 1975-04-23
NL7412004A (en) 1975-04-24
SE7410462L (en) 1975-04-23
ZA745333B (en) 1975-08-27
BE819361A (en) 1974-12-16
DE2441208A1 (en) 1975-04-24
FR2248234B3 (en) 1977-06-17
ES430053A1 (en) 1976-10-16

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Legal Events

Date Code Title Description
ST Notification of lapse