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Process for separation of phenol and btx aromatics from gas condensates

A BTX aromatic hydrocarbon and phenol technology, applied in the field of equipment operating the process, can solve the problems of affecting the solvent extractability, inability to handle separation, and the efficiency of the extraction process is deteriorated, so as to minimize energy consumption, small size, and economical advantages. Effect

Active Publication Date: 2019-10-22
LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In existing processes, these substances cannot be separated by existing distillation processes and are thus enriched in the extractant
This negatively affects the extractability of the solvent used and thus makes the extraction process less efficient

Method used

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  • Process for separation of phenol and btx aromatics from gas condensates

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] exist figure 1 In the process flow diagram shown schematically in , gas condensate 1 released from tar and oil is introduced into an extraction zone 2 . Gaseous condensates released mainly from phenol and BTX aromatics leave the extraction plant as raffinate stream 3 and are supplied to figure 1 Further processing not shown in .

[0056] The first distillation column 5 is loaded with an organic extractant 4 loaded with phenol and BTX aromatics, here diisopropyl ether (DIPE). A phenol-rich phase is obtained as bottom product 6 , which is still loaded with residual amounts of DIPE and is charged to a second distillation column 7 . From the enrichment section 5a of the first distillation column 5 a stream 8 is withdrawn from a third theoretical tray (counting the trays from top to bottom) and is charged to a third distillation column 9 which Designed as a column with 30 theoretical trays. Stream 8 is loaded onto tray 17 of column 9 .

[0057] In the third distillation...

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Abstract

The present invention provides a process for the separation of phenol and BTX aromatics from gas condensates. Process and apparatus for separating phenol from gas condensates of fixed bed gasification of coal by extraction with organic solvents, wherein the solvent is recycled, and wherein phenol is separated from the carried solvent by distillation, and wherein in a further distillation step , to separate aromatics such as benzene, toluene, xylene (BTX aromatics) from solvents.

Description

technical field [0001] The present invention relates to a process for the separation of phenol and BTX aromatics (benzene, toluene, xylene) from gas condensates of fixed bed gasification of coal by extraction with organic solvents, comprising the following steps: [0002] a) supplying the gas condensate stream laden with phenol and BTX aromatics from the gas condensate of the fixed bed gasification of coal to the extraction zone; [0003] b) extracting the gas condensate stream laden with phenol and BTX aromatics with an organic solvent in the extraction zone, wherein a gas condensate stream depleted of phenol and BTX aromatics is obtained as a raffinate, and a phenol-laden and the solvent of BTX aromatics as the extract; [0004] c) supplying said extract to a first distillation column, and separating by distillation into a first bottom product containing phenol and said solvent and a first top product containing said BTX aromatics and said solvent, wherein said the first o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C7/04C07C7/10C07C15/04C07C15/06C07C15/08C07C37/74C07C37/72C07C39/04
CPCB01D11/0446B01D11/0488B01D11/0492C07C7/04C10G21/16C10G2400/30C07C7/10C07C37/009C07C15/04C07C15/08C07C15/06C07C39/02
Inventor 塔季扬娜·维德斯潘弗雷德里克·朱达斯格特·翁加尔马里昂·达维德
Owner LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE