GB1128718A - Apparatus for separating solids from liquids - Google Patents

Apparatus for separating solids from liquids

Info

Publication number
GB1128718A
GB1128718A GB20052/67A GB2005267A GB1128718A GB 1128718 A GB1128718 A GB 1128718A GB 20052/67 A GB20052/67 A GB 20052/67A GB 2005267 A GB2005267 A GB 2005267A GB 1128718 A GB1128718 A GB 1128718A
Authority
GB
United Kingdom
Prior art keywords
column
reflux
liquid
conveyed
fraction
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
GB20052/67A
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.)
Inventa AG fuer Forschung und Patentverwertung
Original Assignee
Inventa AG fuer Forschung und Patentverwertung
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 Inventa AG fuer Forschung und Patentverwertung filed Critical Inventa AG fuer Forschung und Patentverwertung
Publication of GB1128718A publication Critical patent/GB1128718A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
    • C07D201/16—Separation or purification
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/0004—Crystallisation cooling by heat exchange
    • B01D9/0013—Crystallisation cooling by heat exchange by indirect heat exchange
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D9/00—Crystallisation
    • B01D9/004—Fractional crystallisation; Fractionating or rectifying columns
    • 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
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
    • C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
    • C07C37/84—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by crystallisation

Landscapes

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

Abstract

1,128,718. Reflux crystallization. INVENTA, AG. FUR FORSCHUNG UND PATENTVERWERTUNG, ZURICH. 1 May, 1967 [2 May, 1966], No. 20052/67. Heading BIG. In a process of reflux crystallization, crystals are conveyed through a column in countercurrent flow to liquid by means of a liquidpermeable screw conveyor of gauze or perforated material rotating at 0.1-300 rpm. The column may be subjected to a pulse having a frequency of 15-400 cycles per min and a stroke of 1-200 mm. Alternatively, the worm may be pulsated. As shown, a liquid mixture to be treated is crystallized in a scraper cooler 2 and is conveyed to the middle section of a reflux column 1 containing a sieve screw conveyor 8 and subjected to the pulsing action of a reciprocating piston 9. A high mp fraction in crystal form is melted by a heater 6 at the base of the column, a portion of the melt being withdrawn and the remainder passing back up the column. A low mp fraction in liquid form is discharged from the top of the column and a portion recycled in crystal form to the upper part of the column after passage through a scraper cooler 5. Caprolactam or phenol may be purified.
GB20052/67A 1966-05-02 1967-05-01 Apparatus for separating solids from liquids Expired GB1128718A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH634066A CH450356A (en) 1966-05-02 1966-05-02 Method and device for the separation of mixtures of substances

Publications (1)

Publication Number Publication Date
GB1128718A true GB1128718A (en) 1968-10-02

Family

ID=4308013

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20052/67A Expired GB1128718A (en) 1966-05-02 1967-05-01 Apparatus for separating solids from liquids

Country Status (7)

Country Link
BE (1) BE697822A (en)
CH (1) CH450356A (en)
DE (1) DE1619773A1 (en)
ES (1) ES339996A1 (en)
GB (1) GB1128718A (en)
NL (2) NL6706057A (en)
SE (1) SE330682B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113058370A (en) * 2021-06-02 2021-07-02 北京拜欧泰克科技有限公司 System for separating sintering flue gas by increasing flue gas buffer through green diagnosis

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113058370A (en) * 2021-06-02 2021-07-02 北京拜欧泰克科技有限公司 System for separating sintering flue gas by increasing flue gas buffer through green diagnosis

Also Published As

Publication number Publication date
BE697822A (en) 1967-10-02
NL136378C (en)
CH450356A (en) 1968-01-31
DE1619773A1 (en) 1970-07-30
ES339996A1 (en) 1968-09-01
SE330682B (en) 1970-11-30
NL6706057A (en) 1967-11-03

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