CA2277678A1 - Nox species removal from sulfur dioxide containing gases - Google Patents

Nox species removal from sulfur dioxide containing gases Download PDF

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Publication number
CA2277678A1
CA2277678A1 CA 2277678 CA2277678A CA2277678A1 CA 2277678 A1 CA2277678 A1 CA 2277678A1 CA 2277678 CA2277678 CA 2277678 CA 2277678 A CA2277678 A CA 2277678A CA 2277678 A1 CA2277678 A1 CA 2277678A1
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CA
Canada
Prior art keywords
sulfur dioxide
concentration
feed gas
containing gases
dioxide containing
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
CA 2277678
Other languages
French (fr)
Other versions
CA2277678C (en
Inventor
Graeme W. Norval
Drew J. Drexler
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.)
Aker Solutions Canada Inc
Original Assignee
Kvaerner Chemetics 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 Kvaerner Chemetics Inc filed Critical Kvaerner Chemetics Inc
Priority to CA 2277678 priority Critical patent/CA2277678C/en
Publication of CA2277678A1 publication Critical patent/CA2277678A1/en
Application granted granted Critical
Publication of CA2277678C publication Critical patent/CA2277678C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C01B17/765—Multi-stage SO3-conversion
    • 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)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Catalysts (AREA)

Abstract

A process involving the catalytic oxidation of sulfur dioxide to sulfur trioxide in an oxygen- and NO x -containing feed gas comprising feeding the feed gas having a NO x first concentration to a catalyst bed containing a SO2 oxidizing catalyst to provide a sulfur trioxide-containing gaseous product, the improvement comprising feeding a gaseous NO x reducing agent in admixture with the feed gas to the catalyst bed to effect reduction of the NO x and provide the gaseous product having a NO x concentration of less than the first concentration. The process provides sulfuric acid of greatly reduced nitrosyl sulfuric acid contamination.
CA 2277678 1999-07-19 1999-07-19 Nox species removal from sulfur dioxide containing gases Expired - Lifetime CA2277678C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA 2277678 CA2277678C (en) 1999-07-19 1999-07-19 Nox species removal from sulfur dioxide containing gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA 2277678 CA2277678C (en) 1999-07-19 1999-07-19 Nox species removal from sulfur dioxide containing gases

Publications (2)

Publication Number Publication Date
CA2277678A1 true CA2277678A1 (en) 2001-01-19
CA2277678C CA2277678C (en) 2008-05-06

Family

ID=4163774

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2277678 Expired - Lifetime CA2277678C (en) 1999-07-19 1999-07-19 Nox species removal from sulfur dioxide containing gases

Country Status (1)

Country Link
CA (1) CA2277678C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015191212A1 (en) * 2014-06-09 2015-12-17 Chemetics Inc. Single contact, single absorption system for producing sulfuric acid with high conversion efficiency
CN105967150A (en) * 2016-07-08 2016-09-28 华能国际电力股份有限公司 Equipment and method for preparing SO 3 gas by using platinum catalyst

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015191212A1 (en) * 2014-06-09 2015-12-17 Chemetics Inc. Single contact, single absorption system for producing sulfuric acid with high conversion efficiency
US9994451B2 (en) 2014-06-09 2018-06-12 Chemetics Inc. Single contact, single absorption system for producing sulfuric acid with high conversion efficiency
US10556795B2 (en) 2014-06-09 2020-02-11 Chemetics Inc. Single contact, single absorption system for producing sulfuric acid with high conversion efficiency
CN105967150A (en) * 2016-07-08 2016-09-28 华能国际电力股份有限公司 Equipment and method for preparing SO 3 gas by using platinum catalyst

Also Published As

Publication number Publication date
CA2277678C (en) 2008-05-06

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