DE3471475D1 - Improved n-paraffin-isoparaffin separation process using wash of recycle purge gas - Google Patents

Improved n-paraffin-isoparaffin separation process using wash of recycle purge gas

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Publication number
DE3471475D1
DE3471475D1 DE8484109721T DE3471475T DE3471475D1 DE 3471475 D1 DE3471475 D1 DE 3471475D1 DE 8484109721 T DE8484109721 T DE 8484109721T DE 3471475 T DE3471475 T DE 3471475T DE 3471475 D1 DE3471475 D1 DE 3471475D1
Authority
DE
Germany
Prior art keywords
purge gas
stream
iii
paraffin
wash
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
DE8484109721T
Other languages
German (de)
Inventor
Robert Lawton Gray
Thomas Charles Holcombe
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.)
Union Carbide Corp
Original Assignee
Union Carbide 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 Union Carbide Corp filed Critical Union Carbide Corp
Priority claimed from EP84109721A external-priority patent/EP0171451B1/en
Application granted granted Critical
Publication of DE3471475D1 publication Critical patent/DE3471475D1/en
Expired legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Sepn. of n-paraffins (I) and non-n-paraffins (II) from their vapour-phase mixts. is effected by passing the mixt. through a sequence of zeolite molecular sieve selective adsorbent beds, the process being characterised in that: (i) a non-soluble purge gas (III) is used to (a) desorb (I) form each bed and (b) transfer non-adsorbed (II) from each bed; (ii) the desorption effluent stream is sepd. into (A) a purge gas stream contg. some residual (I) and (B) a (I) product stream, (A) being recycled; and (iii) the effluent stream comprising (III) and the non-adsorbed (II) is sepd. into (C) a purge gas stream contg. some residual (II) and (D) a (II) product stream, (C) being recycled. The improvement comprises lowering the residuals contents of (A) and (C) prior to recycle by washing them with a portion of the product streams (B) and (D), specifially (A) with (D) and (C) with (B).
DE8484109721T 1984-08-16 1984-08-16 Improved n-paraffin-isoparaffin separation process using wash of recycle purge gas Expired DE3471475D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84109721A EP0171451B1 (en) 1982-10-14 1984-08-16 Improved n-paraffin-isoparaffin separation process using wash of recycle purge gas

Publications (1)

Publication Number Publication Date
DE3471475D1 true DE3471475D1 (en) 1988-06-30

Family

ID=8192114

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8484109721T Expired DE3471475D1 (en) 1984-08-16 1984-08-16 Improved n-paraffin-isoparaffin separation process using wash of recycle purge gas

Country Status (1)

Country Link
DE (1) DE3471475D1 (en)

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee