GB473697A - Improvements in and relating to the production of non-oxidising gaseous mixtures - Google Patents

Improvements in and relating to the production of non-oxidising gaseous mixtures

Info

Publication number
GB473697A
GB473697A GB8172/36A GB817236A GB473697A GB 473697 A GB473697 A GB 473697A GB 8172/36 A GB8172/36 A GB 8172/36A GB 817236 A GB817236 A GB 817236A GB 473697 A GB473697 A GB 473697A
Authority
GB
United Kingdom
Prior art keywords
air
products
pipe
blower
combustion chamber
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
GB8172/36A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Publication of GB473697A publication Critical patent/GB473697A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/02—Preparation of nitrogen
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B21/00—Nitrogen; Compounds thereof
    • C01B21/20—Nitrogen oxides; Oxyacids of nitrogen; Salts thereof
    • C01B21/24—Nitric oxide (NO)
    • C01B21/26—Preparation by catalytic or non-catalytic oxidation of ammonia
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
    • C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
    • C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
    • C01B3/047—Decomposition of ammonia
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/76—Adjusting the composition of the atmosphere
    • C21D1/763—Adjusting the composition of the atmosphere using a catalyst
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • Combustion & Propulsion (AREA)
  • General Health & Medical Sciences (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Gas Burners (AREA)

Abstract

In the production of non-oxidizing gaseous mixtures for use in metal-heating furnaces by the controlled combustion of air and cracked ammonia, the burnt gases are passed over a catalyst to remove traces of free oxygen, and <PICT:0473697/III/1> control of temperature is effected by returning a regulated quantity of cooled burnt gases to the combustion chamber. The apparatus shown comprises a cylindrical vessel 1 lined with refractory and heat-insulating materials 2, 3, and divided by a perforated wall 9 into two chambers. Ammonia is supplied to the burner 10 through the cracking-coil 13, and air by the blower 30, and the products of combustion pass through a perforated baffle 15, catalytic gauzes 14, and the wall 9 to the chamber 8 containing a cooling coil 18 and the baffle 19. The products are exhausted through the pipe 32 and a part is returned by a blower 35 either to the burner 10 or to the combustion chamber through the pipe 20. A part of the products may also be led to the air blower 30 through the connection 34, and air may be supplied to the combustion chamber through the pipe 39. Nickel, copper and palladium gauzes may be used as catalysts.
GB8172/36A 1936-03-18 1936-03-18 Improvements in and relating to the production of non-oxidising gaseous mixtures Expired GB473697A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8171/36A GB473696A (en) 1936-03-18 1936-03-18 Improvements in and relating to the production of protective gases suitable for use in metal heat treatment furnaces

Publications (1)

Publication Number Publication Date
GB473697A true GB473697A (en) 1937-10-18

Family

ID=9847167

Family Applications (2)

Application Number Title Priority Date Filing Date
GB8171/36A Expired GB473696A (en) 1936-03-18 1936-03-18 Improvements in and relating to the production of protective gases suitable for use in metal heat treatment furnaces
GB8172/36A Expired GB473697A (en) 1936-03-18 1936-03-18 Improvements in and relating to the production of non-oxidising gaseous mixtures

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB8171/36A Expired GB473696A (en) 1936-03-18 1936-03-18 Improvements in and relating to the production of protective gases suitable for use in metal heat treatment furnaces

Country Status (2)

Country Link
GB (2) GB473696A (en)
NL (1) NL48782C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4049569A (en) * 1974-05-17 1977-09-20 Smit Nijmegen B.V. Process and apparatus for producing an inert gas
US4069071A (en) * 1975-04-11 1978-01-17 Societe Chimique De La Grande Paroisse, Azote Et Produits Chimiques Method for generating a reducing atmosphere for heat-treating installations

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103588279A (en) * 2013-10-15 2014-02-19 常州思宇环保材料科技有限公司 Treatment device for high-concentration ammonia-nitrogen wastewater

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4049569A (en) * 1974-05-17 1977-09-20 Smit Nijmegen B.V. Process and apparatus for producing an inert gas
US4069071A (en) * 1975-04-11 1978-01-17 Societe Chimique De La Grande Paroisse, Azote Et Produits Chimiques Method for generating a reducing atmosphere for heat-treating installations
US4219528A (en) * 1975-04-11 1980-08-26 Societe Chimique De La Grande Paroisse, Azote Et Produits Chimiques Apparatus for generating a reducing atmosphere for heat-treating installations

Also Published As

Publication number Publication date
GB473696A (en) 1937-10-18
NL48782C (en)

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