AU601781B2 – Improved process for synthesizing ammonia
– Google Patents
AU601781B2 – Improved process for synthesizing ammonia
– Google Patents
Improved process for synthesizing ammonia
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Publication number
AU601781B2
AU601781B2
AU81394/87A
AU8139487A
AU601781B2
AU 601781 B2
AU601781 B2
AU 601781B2
AU 81394/87 A
AU81394/87 A
AU 81394/87A
AU 8139487 A
AU8139487 A
AU 8139487A
AU 601781 B2
AU601781 B2
AU 601781B2
Authority
AU
Australia
Prior art keywords
ammonia
effluent
recited
catalyst beds
catalyst
Prior art date
1986-11-20
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.)
Ceased
Application number
AU81394/87A
Other versions
AU8139487A
(en
Inventor
Bernard John Grotz
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.)
Santa Fe Braun Inc
Original Assignee
Santa Fe Braun 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.)
1986-11-20
Filing date
1987-11-19
Publication date
1990-09-20
1986-11-20
Priority claimed from US06/932,614
external-priority
patent/US4744966A/en
1987-11-19
Application filed by Santa Fe Braun Inc
filed
Critical
Santa Fe Braun Inc
1988-05-26
Publication of AU8139487A
publication
Critical
patent/AU8139487A/en
1990-09-20
Application granted
granted
Critical
1990-09-20
Publication of AU601781B2
publication
Critical
patent/AU601781B2/en
2007-11-19
Anticipated expiration
legal-status
Critical
Status
Ceased
legal-status
Critical
Current
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Classifications
C—CHEMISTRY; METALLURGY
C01—INORGANIC CHEMISTRY
C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
C01C1/00—Ammonia; Compounds thereof
C01C1/02—Preparation, purification or separation of ammonia
C01C1/04—Preparation of ammonia by synthesis in the gas phase
C01C1/0405—Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of 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
Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
Y02P20/00—Technologies relating to chemical industry
Y02P20/50—Improvements relating to the production of bulk chemicals
Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Abstract
Means are disclosed for lowering the temperature of the gaseous effluent from the first catalyst bed (214) in a continuous ammonia synthesis process in which a syngas mixture containing nitrogen and hydrogen is passed sequentially over two catalyst beds (228) and (238) or more than two catalyst beds containing ammonia synthesis catalyst. This cooling, effected to promote the exothermic ammonia-forming reaction, is accomplished by subjecting the gaseous effluent from the first catalyst bed (214) to heat exchange in a high temperature heat sink (224), preferably after having undergone heat exchange with the synthesis gas feed to the first catalyst bed in a heat exchanger (216), to control the temperature of the effluent entering the second catalyst bed (228) to a desired level.
Description
IQ
601781 S F Ref: 44044 FORM COMMONWEALTH OF AUSTRALIA PATENTS ACT 1952 COMPLETE SPECIFICATION
(ORIGINAL)
FOR OFFICE USE: Class Int Class Complete Specification Lodged: Accepted: S Published: Priority: Related Art: amneidmn-Tis (1c 5 r «o etii -9 otr-ec;t o L’j’-vtij’ng Name and Address of Applicant: Address for Service: Santa Fe Braun Inc.
1000 South Fremont Avenue Alhambra California 91802-4000 UNITED STATES OF AMERICA Spruson Ferguson, Patent Attorneys Level 33 St Martins Tower, 31 Market Street Sydney, New South Wales, 2000, Australia C,4 Complete Specification for the invention entitled: Improved ‘Process for Synthesizing Ammonia The following statement is a full description of this best method of performing it known to me/us invention, including the 5845/5 Improved Process For Synthesizing Ammonia Abstract Means are disclosed for lowering the temperature of the gaseous effluent from the first catalyst bed in a continuous ammonia synthesis process in which a syngas mixture containing nitrogen and hydrogen is passed sequentially over two or more catalyst beds containing ammonia synthesis catalyst. This cooling, effected to promote the exothermic ammonia-forming reaction, is accomplished by subjecting the gaseous effluent from the first catalyst bed to heat exchange in a high temperature 10 heat sink, preferably after having undergone heat exchange with the synthesis gas feed to the first catalyst bed, to control the temperature of the effluent entering the second catalyst bed to a desired level.
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DESCRIPTION
Improved Process For Synthesizing Ammonia Related Applications tion of U.S. Patent Appli ion Serial No. 932,614, filed November 20, 1986 f «Improved Process for Synthesizing Ammonia», the isclosure of which is specifically rpra-i. rat
