The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 11, 1994
Filed:
Aug. 10, 1990
Applicant:
Inventors:
Kengo Tsukahara, Niigata, JP;
Takeshi Otake, Niigata, JP;
Masao Saito, Yachiyo, JP;
Toshio Koseki, Abiko, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F28D / ; F28D / ; C22C / ; B01J / ;
U.S. Cl.
CPC ...
422201 ; 422200 ; 422241 ; 420452 ; 165164 ;
Abstract
A process for producing hydrogen cyanide by reacting methane or a gas containing methane as a main component, ammonia and an oxygen-containing gas in the presence of a platinum-containing catalyst, wherein the reaction gases are quenched by using an indirect heat-exchanger, preferably made of a nickel alloy having an iron content of not more than 4.0% by weight, without quenching them directly with water.