JPS51121471A - Process for recovering a solvent from a waste cleaning liquid - Google Patents

Process for recovering a solvent from a waste cleaning liquid

Info

Publication number
JPS51121471A
JPS51121471A JP50047070A JP4707075A JPS51121471A JP S51121471 A JPS51121471 A JP S51121471A JP 50047070 A JP50047070 A JP 50047070A JP 4707075 A JP4707075 A JP 4707075A JP S51121471 A JPS51121471 A JP S51121471A
Authority
JP
Japan
Prior art keywords
solvent
recovering
cleaning liquid
waste cleaning
water
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.)
Granted
Application number
JP50047070A
Other languages
Japanese (ja)
Other versions
JPS556401B2 (en
Inventor
Masaro Otani
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.)
Mitsubishi Kasei Corp
Original Assignee
Mitsubishi Kasei Corp
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 Mitsubishi Kasei Corp filed Critical Mitsubishi Kasei Corp
Priority to JP50047070A priority Critical patent/JPS51121471A/en
Publication of JPS51121471A publication Critical patent/JPS51121471A/en
Publication of JPS556401B2 publication Critical patent/JPS556401B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/06—Flash distillation
    • B01D3/065—Multiple-effect flash distillation (more than two traps)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Detergent Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

PURPOSE:To provide an effective process for recovering a solvent from waster liquid which has been discharged from a step of washing an isocyanate polymer production apparatus with an organic solvent. In the present process, the waste water is distilled in the presence of water to effectively recover the solvent therefrom.
JP50047070A 1975-04-18 1975-04-18 Process for recovering a solvent from a waste cleaning liquid Granted JPS51121471A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50047070A JPS51121471A (en) 1975-04-18 1975-04-18 Process for recovering a solvent from a waste cleaning liquid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50047070A JPS51121471A (en) 1975-04-18 1975-04-18 Process for recovering a solvent from a waste cleaning liquid

Publications (2)

Publication Number Publication Date
JPS51121471A true JPS51121471A (en) 1976-10-23
JPS556401B2 JPS556401B2 (en) 1980-02-16

Family

ID=12764892

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50047070A Granted JPS51121471A (en) 1975-04-18 1975-04-18 Process for recovering a solvent from a waste cleaning liquid

Country Status (1)

Country Link
JP (1) JPS51121471A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5870804A (en) * 1981-09-26 1983-04-27 バスフ　アクチエンゲゼルシヤフト Distillative separation of liquid mixture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5870804A (en) * 1981-09-26 1983-04-27 バスフ　アクチエンゲゼルシヤフト Distillative separation of liquid mixture
JPH0355161B2 (en) * 1981-09-26 1991-08-22

Also Published As

Publication number Publication date
JPS556401B2 (en) 1980-02-16

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