NL7504184A - Recovery and purificn of (meth)acrylonitrile - with recycle of aq. quench stream in ammoxidn process - Google Patents

Recovery and purificn of (meth)acrylonitrile - with recycle of aq. quench stream in ammoxidn process

Info

Publication number
NL7504184A
NL7504184A NL7504184A NL7504184A NL7504184A NL 7504184 A NL7504184 A NL 7504184A NL 7504184 A NL7504184 A NL 7504184A NL 7504184 A NL7504184 A NL 7504184A NL 7504184 A NL7504184 A NL 7504184A
Authority
NL
Netherlands
Prior art keywords
acrylonitrile
meth
stream
ammoxidn
purificn
Prior art date
Application number
NL7504184A
Other languages
Dutch (nl)
Original Assignee
Standard Oil Co Ohio
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 Standard Oil Co Ohio filed Critical Standard Oil Co Ohio
Priority to NL7504184A priority Critical patent/NL7504184A/en
Publication of NL7504184A publication Critical patent/NL7504184A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C253/00—Preparation of carboxylic acid nitriles
    • C07C253/32—Separation; Purification; Stabilisation; Use of additives
    • C07C253/34—Separation; Purification

Landscapes

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

Abstract

In the recovery and purificn. of (meth)acrylonitrile obtd. by ammoxidn. of propylene (isobutylene) by (a) quenching the reactor effluent gases with an aq. stream, (b) recovering HCN and (meth)acrylonitrile as an aq. soln., (c) concentrating the soln. from (b) by distilling water/impurities, (d) distilling the concentrate to remove HCN as overheads, and (e) removing the bottoms or a side-stream, in the HCN distn., to a decanter to form an aq. and org. layer (of (meth)acrylonitrile), the improvement is that the aq. layer is removed from the decanter at (e) and directly contacted with the reactor effluent in the quench column at (a). The amt. of acid needed, to neutralise excess ammonia breaking through in the reactor effluent, is reduced; the aq. stream is utilised, thus reducing disposal problems.
NL7504184A 1975-04-08 1975-04-08 Recovery and purificn of (meth)acrylonitrile - with recycle of aq. quench stream in ammoxidn process NL7504184A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL7504184A NL7504184A (en) 1975-04-08 1975-04-08 Recovery and purificn of (meth)acrylonitrile - with recycle of aq. quench stream in ammoxidn process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7504184A NL7504184A (en) 1975-04-08 1975-04-08 Recovery and purificn of (meth)acrylonitrile - with recycle of aq. quench stream in ammoxidn process

Publications (1)

Publication Number Publication Date
NL7504184A true NL7504184A (en) 1976-10-12

Family

ID=19823530

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7504184A NL7504184A (en) 1975-04-08 1975-04-08 Recovery and purificn of (meth)acrylonitrile - with recycle of aq. quench stream in ammoxidn process

Country Status (1)

Country Link
NL (1) NL7504184A (en)

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Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
A85 Still pending on 85-01-01
BV The patent application has lapsed