US2244210A - Method for partially oxidizing methane - Google Patents

Method for partially oxidizing methane Download PDF

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Publication number
US2244210A
US2244210A US233334A US23333438A US2244210A US 2244210 A US2244210 A US 2244210A US 233334 A US233334 A US 233334A US 23333438 A US23333438 A US 23333438A US 2244210 A US2244210 A US 2244210A
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United States
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ducts
heater
heating
reaction
gases
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Expired - Lifetime
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US233334A
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English (en)
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Nashan Paul
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/27—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation
    • C07C45/32—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen
    • C07C45/33—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxidation with molecular oxygen of CHx-moieties

Definitions

  • the reaction chamber is heated in a heater in which the individual ducts may be uniformly heated.
  • the favorable eiect of the uniform heating of the furnace can be lincreased by circulating the heating gases, part of the burnt gases being, if necessary, removed and replaced by vfresh fuel gas which preferably heats the furnace by means of several burners.
  • the heater is best arranged for regenerative or re- (Cl. 26o-604) cuperative heating, which offers the advantage that. the residual gas leaving the'reaction chamber of the heater can be used for heating the heater, so that the calorific value ofthe residual gas is utilized.
  • Fig. 2 a vertical section along the line B-B in Fig. 1,
  • Fig. 3 a longitudinal section with circulating heating
  • Fig. 4 a longitudinal section along th'e line C-C in Fig. 5 through a heater with regenerative heating
  • Fig. 5 a section along the line partially shown.
  • a is the furnace of the heater withthe burners b and the flues c. 4 divided into individual ducts d and so arranged in the heating zone that the substances participating in the reaction are uniformly and similarlyheated.
  • the ducts d are made through a heater of metallic materials their inner walls are lined with the .catalyst materials. 'Ihe walls of the ducts d can, however, themselves consist of the catalyst materials and catalyst materials may also be arranged inside the ducts.
  • the heating gases coming from the furnace a pass round the reaction ducts d, throughv the ilues c and out of the heater as indicated by the arrows.
  • the air and fuel pipes for the burners b are marked land lc respectively.
  • fans e orvblowers for circulating the heating gases are arranged in front of the heating ilues. Before the heating gases re-enter the furnace part of them is led olf and leaves the heater through thev outlet pipe f, which is equipped with a control ap g. h indicates the peep holes.
  • Figs. 4 and 5 show a heater with regenerative heating. 'I'he heating gases are passed alternatively through a part of the. regenerative chambers i in order to ensure utilization of -the waste heat within the heater itself and the preheating of the air and/or gases for combustion in the other part of the regenerativel chambers. This makes it possible to burn gases with little heat content in the heater, to which in the present case can be added the out of the reaction ducts.
  • k is the gas feed main and t the air pipe controlled by means of two- D-n in Fig.. 4,-
  • the reaction chamber is residual gases passing ⁇ way nap valves which, though not shown, are sumciently wellfknown.
  • the reaction ducts were lined and charged with solid catalyst material, the catalyst bodies consisting of puried clay mixed with 10% of zinc-oxide.
  • the reaction gases were circulated. The yield was 560 grammes of (100%) formaldehyde per cu. m. of methane introduced into the reaction chamber.
  • the residual gases passing out of the cycle were used for heating the heater, I
  • a commercial process for preparing a low molecular aliphatic aldehyde consisting in uniformly heating a mixture consisting of 49.8% by volume of a gas separated from coke over gas containing 41% by volume of methane, 50% air and 0.2% nitric oxides to a temperature of from 500 to '700 C., by passing the mixture in the presence of solid catalysts through a closed passage in a uniform heating zone.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Catalysts (AREA)
US233334A 1937-10-11 1938-10-04 Method for partially oxidizing methane Expired - Lifetime US2244210A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE520480X 1937-10-11

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US2244210A true US2244210A (en) 1941-06-03

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ID=6551058

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US233334A Expired - Lifetime US2244210A (en) 1937-10-11 1938-10-04 Method for partially oxidizing methane

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US (1) US2244210A (fr)
FR (1) FR844596A (fr)
GB (1) GB520480A (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2467993A (en) * 1943-11-10 1949-04-19 Cabot Godfrey L Inc Manufacture of formaldehyde and apparatus therefor
US2567596A (en) * 1946-03-25 1951-09-11 Phillips Petroleum Co Synthesis of hydrocarbons
US2757201A (en) * 1956-07-31 Process for pressure oxidation of the
US2768882A (en) * 1951-05-11 1956-10-30 Union Oil Co Catalytic reactor
US3014969A (en) * 1959-05-18 1961-12-26 Exxon Research Engineering Co Oxidation of gaseous hydrocarbons to formaldehyde
US3052724A (en) * 1957-10-31 1962-09-04 Montedison Spa Process for preparing carbonyl compounds from olefines
US3996294A (en) * 1974-02-01 1976-12-07 Bayer Aktiengesellschaft Oxidizing methane to formaldehyde
US20160128312A1 (en) * 2014-11-10 2016-05-12 Luke Siebert Carrying case for ice fishing rods and tip ups

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE765968C (de) * 1941-09-27 1953-04-09 Gutehoffnungshuette Oberhausen Verfahren zur Unterbrechung von Kettenreaktionen bei der Oxydation von Kohlenwasserstoffen in Gasform, wie der Oxydation von Methan bei der Formaldehydstufe

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2757201A (en) * 1956-07-31 Process for pressure oxidation of the
US2467993A (en) * 1943-11-10 1949-04-19 Cabot Godfrey L Inc Manufacture of formaldehyde and apparatus therefor
US2567596A (en) * 1946-03-25 1951-09-11 Phillips Petroleum Co Synthesis of hydrocarbons
US2768882A (en) * 1951-05-11 1956-10-30 Union Oil Co Catalytic reactor
US3052724A (en) * 1957-10-31 1962-09-04 Montedison Spa Process for preparing carbonyl compounds from olefines
US3014969A (en) * 1959-05-18 1961-12-26 Exxon Research Engineering Co Oxidation of gaseous hydrocarbons to formaldehyde
US3996294A (en) * 1974-02-01 1976-12-07 Bayer Aktiengesellschaft Oxidizing methane to formaldehyde
US20160128312A1 (en) * 2014-11-10 2016-05-12 Luke Siebert Carrying case for ice fishing rods and tip ups

Also Published As

Publication number Publication date
FR844596A (fr) 1939-07-27
GB520480A (en) 1940-04-25

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