Return to Japanese Patent Table of Contents

JP7267608
Process for removing nitrogen compounds from synthesis gas.
Patent Number: EP0661374
Publication date: 1995-07-05
Inventor(s): Van Den Berg, Franciscus Gondul (NL), Van Der Scheer, Albert (NL)
Applicant(s): Shell Int Research (NL)
Requested Patent: JP7267608
Application Number: EP19930203725 19931230
Priority Number(s): EP19930203725 19931230
Priority number : 93 93203725
Priority date : 30.12.1993
Priority country : EP
IPC Classification: C10K1/34; C10K1/20; C10K1/10; C01B3/54
EC Classification: C01B3/52, C10K1/10, C10K1/20, C10K1/34
Equivalents: CA2139165, CN1107876, ZA9410343

Abstract

Process of removing hydrogen cyanide and ammonia from synthesis gas obtained from partly oxidizing in a gasification reactor (2) a feed selected from the group including coal, oil or natural gas comprising supplying the synthesis gas in the presence of water to a reactor (5) containing hydrolysis catalyst; contacting the synthesis gas having an increased ammonia content from the reactor (5) in a sorption vessel (9) with regenerable sorption material to obtain ammonia-loaded sorption material and treated synthesis gas having a reduced content of nitrogen compounds, and withdrawing treated synthesis gas from the sorption vessel (9); and regenerating loaded sorption material to produce regenerated sorption material for use in step (b) and a regeneration off-gas enriched in ammonia, withdrawing regeneration off-gas enriched in ammonia from the sorption vessel (9), and introducing it into the gasification reactor (2).

PURPOSE: To remove a nitrogen compound from a gas obtained after hydrolysis of hydrogen cyanide with a simple method.

CONSTITUTION: The process to remove hydrogen cyanide and ammonia from synthesis gas obtained by partial oxidation of a feed selected from the group including coal, oil or natural gas in a gasification reactor 2 consists of supplying the synthesis gas in the presence of water to a reactor 5 contg. a hydrolysis catalyst, bringing the synthesis gas having an increased ammonia content from the reactor 5 in an adsorption vessel 9 into contact with regenerable adsorption material to obtain ammonia-loaded adsorption material and treated synthesis gas having a reduced content of nitrogen compounds, and withdrawing treated synthesis gas from the adsorption vessel 9, and regenerating loaded adsorption material to produce regenerated adsorption material for use in step b and a regeneration off-gas enriched in ammonia, withdrawing the regeneration off-gas enriched in ammonia from the adsorption vessel 9, and introducing it into the gasification reactor 2.