ES399672A1 - Method for processing at elevated temperature solutions containi ng ammonium carbamate - Google Patents

Method for processing at elevated temperature solutions containi ng ammonium carbamate

Info

Publication number
ES399672A1
ES399672A1 ES399672A ES399672A ES399672A1 ES 399672 A1 ES399672 A1 ES 399672A1 ES 399672 A ES399672 A ES 399672A ES 399672 A ES399672 A ES 399672A ES 399672 A1 ES399672 A1 ES 399672A1
Authority
ES
Spain
Prior art keywords
ammonium carbamate
weight
solution
containi
processing
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
ES399672A
Other languages
Spanish (es)
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.)
Stamicarbon BV
Original Assignee
Stamicarbon BV
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 Stamicarbon BV filed Critical Stamicarbon BV
Publication of ES399672A1 publication Critical patent/ES399672A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/02—Apparatus characterised by being constructed of material selected for its chemically-resistant properties
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/02—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds
    • C07C273/04—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of urea, its salts, complexes or addition compounds from carbon dioxide and ammonia
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/02—Apparatus characterised by their chemically-resistant properties
    • B01J2219/025—Apparatus characterised by their chemically-resistant properties characterised by the construction materials of the reactor vessel proper
    • B01J2219/0277—Metal based
    • B01J2219/0286—Steel

Abstract

Installation for treating an ammonium carbamate-containing solution at high temperature, having at least one pressure stage comprising a heating and decomposition device to decompose at least part of the ammonium carbamate present in the solution, at least one gas separator liquid to remove from the solution the gaseous mixture of ammonia, carbon dioxide and water released during the treatment, which is part of or related to said heating and decomposition device, and a condenser or absorber to transfer said gaseous mixture to the liquid state, in whose installation at least the surfaces of said apparatuses arranged to be in contact with a high temperature ammonium carbamate-containing solution are made of a nickel-free ferritic steel, consisting essentially of at least 25% by weight of chromium, from 0 to 3% by weight of molybdenum and with a combined content of c argon and nitrogen of not more than 0.035% by weight, the rest being iron. (Machine-translation by Google Translate, not legally binding)
ES399672A 1971-02-13 1972-02-11 Method for processing at elevated temperature solutions containi ng ammonium carbamate Expired ES399672A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NLAANVRAGE7101951,A NL169588C (en) 1971-02-13 1971-02-13 PROCESS FOR THE SOLUTIONS CONTAINING INCREASED AMMONIUM CARBAMATE

Publications (1)

Publication Number Publication Date
ES399672A1 true ES399672A1 (en) 1976-05-01

Family

ID=19812478

Family Applications (1)

Application Number Title Priority Date Filing Date
ES399672A Expired ES399672A1 (en) 1971-02-13 1972-02-11 Method for processing at elevated temperature solutions containi ng ammonium carbamate

Country Status (20)

Country Link
AU (1) AU463665B2 (en)
BE (1) BE779258A (en)
BR (1) BR7200837D0 (en)
CA (1) CA966638A (en)
CS (1) CS163267B2 (en)
DD (1) DD95368A5 (en)
DE (1) DE2206615B2 (en)
ES (1) ES399672A1 (en)
FR (1) FR2125445B1 (en)
GB (1) GB1333544A (en)
HU (1) HU173919B (en)
IE (1) IE36076B1 (en)
IT (1) IT948491B (en)
NL (1) NL169588C (en)
NO (1) NO137010C (en)
RO (1) RO63301A (en)
SE (1) SE387336B (en)
TR (1) TR18774A (en)
ZA (1) ZA72781B (en)
ZM (1) ZM2772A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8304381A (en) * 1983-12-21 1985-07-16 Stamicarbon METHOD AND APPARATUS FOR PREPARING MELAMINE
JPS63121641A (en) * 1986-11-10 1988-05-25 Nippon Yakin Kogyo Co Ltd External coating of sheathed heater made of austenitic stainless steel
EP1921043B1 (en) 2006-11-01 2012-01-18 Mitsubishi Gas Chemical Company, Inc. Method of recovering ammonia and process for producing a nitrile compound making use of the ammonia recovery method
WO2021006729A1 (en) * 2019-07-05 2021-01-14 Stamicarbon B.V. Ferritic steel parts in urea plants

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1986973A (en) * 1930-11-17 1935-01-08 Du Pont Prevention of corrosion in urea synthesis
US2129689A (en) * 1936-12-04 1938-09-13 Du Pont Urea manufacture
US2183715A (en) * 1938-05-21 1939-12-19 Electro Metallurg Co Corrosion resistant steel alloy
US2624671A (en) * 1951-01-19 1953-01-06 Union Carbide & Carbon Corp Ferritic chromium steels
GB1183656A (en) * 1967-03-15 1970-03-11 Du Pont Ductile Corrosion-Resistant Alloys.

Also Published As

Publication number Publication date
FR2125445A1 (en) 1972-09-29
SE387336B (en) 1976-09-06
IT948491B (en) 1973-05-30
DD95368A5 (en) 1973-02-05
BR7200837D0 (en) 1973-06-21
AU463665B2 (en) 1975-07-31
NL7101951A (en) 1972-08-15
RO63301A (en) 1978-07-15
CA966638A (en) 1975-04-29
TR18774A (en) 1977-08-23
ZM2772A1 (en) 1973-02-21
DE2206615A1 (en) 1972-08-31
DE2206615B2 (en) 1980-05-29
HU173919B (en) 1979-09-28
NO137010C (en) 1977-12-14
IE36076L (en) 1972-08-13
GB1333544A (en) 1973-10-10
NL169588C (en) 1982-08-02
FR2125445B1 (en) 1977-07-15
ZA72781B (en) 1972-10-25
IE36076B1 (en) 1976-08-04
BE779258A (en) 1972-08-11
AU3881372A (en) 1973-08-16
NO137010B (en) 1977-09-05
CS163267B2 (en) 1975-08-29
NL169588B (en) 1982-03-01

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