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Process utilizing product nitrogen gas to involve regeneration of molecular sieve absorbers

A molecular sieve and adsorber technology, which is applied in the field of molecular sieve purification systems in air separation plants, can solve the problems of insufficient regeneration gas volume of the molecular sieve adsorber and the like

Active Publication Date: 2013-03-13
SHANDONG IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The invention connects the product nitrogen pipeline and the sewage nitrogen pipeline exiting the air separation tower with a pipeline, and installs a valve to introduce the product nitrogen into the sewage nitrogen pipe for heating and regeneration, thereby solving the problem of insufficient regeneration gas volume of the molecular sieve adsorber

Method used

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  • Process utilizing product nitrogen gas to involve regeneration of molecular sieve absorbers
  • Process utilizing product nitrogen gas to involve regeneration of molecular sieve absorbers

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Embodiment Construction

[0008] Technical scheme of the present invention is as follows:

[0009] A process that uses product nitrogen to participate in the regeneration of molecular sieve adsorbers, including two molecular sieve adsorbers, the air from the air cooling tower is input into the molecular sieve adsorbers through pipes and valves, and the purified air is sent to the air separation tower for rectification separation. The product oxygen, product nitrogen, product argon and dirty nitrogen are respectively obtained. The dirty nitrogen for regeneration passes through the heating device and is connected to the molecular sieve adsorber through pipelines and valves; when a molecular sieve adsorber stops working, turn on the heating device and The dirty nitrogen valve regenerates the molecular sieve adsorber that has stopped working; it is characterized in that: the product nitrogen pipeline out of the air separation tower and the dirty nitrogen pipeline are connected with an additional pipeline I,...

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Abstract

The invention provides a process utilizing product nitrogen gas to involve regeneration of molecular sieve absorbers. A product nitrogen gas pipe and a foul nitrogen gas pipe from an air separation tower are connected with each other by a pipeline, a control valve is mounted on the pipeline additionally, product nitrogen gas is introduced into the foul nitrogen gas pipe for heating regeneration so as to involve regeneration of the molecular sieve absorbers, demand for flow of molecular sieve regeneration gas can be met without using excessive throttled air, much more air enters the tower to involve rectification, and accordingly gas output can be increased.

Description

technical field [0001] The invention belongs to the technical field of molecular sieve purification systems in air separation units, and in particular relates to a process for utilizing product nitrogen to participate in the regeneration of molecular sieve adsorbers. Background technique [0002] The molecular sieve purification system is used to purify the air, and the molecular sieve adsorbs H in the air 2 O, C 2 h 2 , CO 2 and other impurities to provide dry and clean raw material air for the air separation unit. [0003] CN201882925U (CN201020590734.7) provides a molecular sieve purification system, including two molecular sieve purifiers. The intermittently on-off pressure boost valve further includes a nitrogen pressurized pipeline for delivering nitrogen to the two molecular sieve purifiers respectively. The nitrogen pressure pipeline further includes two pressure valves for respectively controlling the connection and disconnection of the nitrogen pressure pipeli...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/34B01D53/02
Inventor 朱圣华李克海田现德李凤郭元刚康与峰
Owner SHANDONG IRON & STEEL CO LTD