ES8708208A1 - Production of acrylamide crystal - Google Patents

Production of acrylamide crystal

Info

Publication number
ES8708208A1
ES8708208A1 ES554281A ES554281A ES8708208A1 ES 8708208 A1 ES8708208 A1 ES 8708208A1 ES 554281 A ES554281 A ES 554281A ES 554281 A ES554281 A ES 554281A ES 8708208 A1 ES8708208 A1 ES 8708208A1
Authority
ES
Spain
Prior art keywords
acrylamide
cooling
passed
aqueous solution
cooling pipes
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
ES554281A
Other languages
Spanish (es)
Other versions
ES554281A0 (en
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals 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.)
Filing date
Publication date
Application filed by Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Publication of ES554281A0 publication Critical patent/ES554281A0/en
Publication of ES8708208A1 publication Critical patent/ES8708208A1/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C231/00—Preparation of carboxylic acid amides
    • C07C231/22—Separation; Purification; Stabilisation; Use of additives
    • C07C231/24—Separation; Purification
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/005—Selection of auxiliary, e.g. for control of crystallisation nuclei, of crystal growth, of adherence to walls; Arrangements for introduction thereof
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C233/00—Carboxylic acid amides
    • C07C233/01—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
    • C07C233/02—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals
    • C07C233/09—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals with carbon atoms of carboxamide groups bound to carbon atoms of an acyclic unsaturated carbon skeleton

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE:To obtain the titled crystals, economically by cooling an aqueous solution of acrylamide in a double-pipe or multitubular heat exchanger, in which the aqueous solution is passed through the inside of cooling pipes, made of stainless steel and electropolished and a refrigerant liquid is passed through the outside thereof. CONSTITUTION:An aqueous solution of acrylamide is cooled in a double-pipe or multitubular heat exchanger, in which the aqueous solution of acrylamide is passed through the inside of cooling pipes made of stainless steel and a refrigerant liquid is passed through the outside thereof, to crystallize the acrylamide. In the process, the cooling pipes are characterized in that the inside thereof is electropolished. The liquid flow velocity at the cooling heat transfer surface must be increased to carry out the cooling and crystallizing of a substance readily causing scale deposition, e.g. acrylamide. A multitubular heat exchange capable of increasing the heat transfer area is particularly preferred for the type of the cooler. The effect of the electropolishing seems to produce good results on a scaling phenomenon of acrylamide crystals by the change in surface conditions of the metal.
ES554281A 1985-04-24 1986-04-23 Production of acrylamide crystal Expired ES8708208A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8659185 1985-04-24

Publications (2)

Publication Number Publication Date
ES554281A0 ES554281A0 (en) 1987-11-01
ES8708208A1 true ES8708208A1 (en) 1987-11-01

Family

ID=13891249

Family Applications (1)

Application Number Title Priority Date Filing Date
ES554281A Expired ES8708208A1 (en) 1985-04-24 1986-04-23 Production of acrylamide crystal

Country Status (5)

Country Link
JP (1) JPS6236346A (en)
KR (1) KR890002924B1 (en)
BR (1) BR8601844A (en)
ES (1) ES8708208A1 (en)
ZA (1) ZA862861B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10015014A1 (en) * 2000-03-27 2001-10-04 Bayer Ag Process for the preparation of bisphenols
CN102786430A (en) * 2012-07-20 2012-11-21 江苏南天农科化工有限公司 Technology for applying airlift stirring to acrylamide crystallization

Also Published As

Publication number Publication date
BR8601844A (en) 1986-12-23
ES554281A0 (en) 1987-11-01
ZA862861B (en) 1986-12-30
JPH046702B2 (en) 1992-02-06
JPS6236346A (en) 1987-02-17
KR890002924B1 (en) 1989-08-12
KR860008223A (en) 1986-11-14

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Legal Events

Date Code Title Description
PC1A Transfer granted