Cyclone-filtering-membrane combined recycle hydrogen purifying method and device

A circulating hydrogen and combined technology, which is applied to the device used to implement the method, in the field of cyclone-filtration-membrane combined circulating hydrogen purification, can solve the problems such as the entrainment of liquid droplets by circulating hydrogen

Active Publication Date: 2011-01-05
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, so far, the field has not developed a method that can effectively solve the problem of entraining liquid droplets and impurity gases in circulating hy...

Method used

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  • Cyclone-filtering-membrane combined recycle hydrogen purifying method and device
  • Cyclone-filtering-membrane combined recycle hydrogen purifying method and device
  • Cyclone-filtering-membrane combined recycle hydrogen purifying method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Example 1: Hydrocracking unit capacity expansion and transformation system of Sinopec Zhenhai Refining and Chemical Company:

[0053] The device of the present invention is adopted in the matching of the system.

[0054] The following table shows the composition of the feed gas:

[0055] project

unit

2009 average

H 2

%(v / v)

67.56

Air

%(v / v)

10.03

methane

%(v / v)

10.65

ethane

%(v / v)

3.80

Vinyl

%(v / v)

0.00

propane

%(v / v)

4.00

Propylene

%(v / v)

0.00

Isobutane

%(v / v)

2.54

n-butane

%(v / v)

1.53

n-isobutylene

%(v / v)

0.00

Anti-butene

%(v / v)

0.00

[0056] Butene

%(v / v)

0.00

C5

%(v / v)

0.54

CO 2

%(v / v)

0.00

CO

%(v / v)

0.00

C＝

%(v / v)

0.00

Comparison method H 2 S

ml / m 3

32.81

...

Embodiment 2

[0061] Example 2: Coal liquefaction unit of Ordos Branch of China Shenhua Coal-to-oil Chemical Co., Ltd.

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PUM

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Abstract

The invention relates to a cyclone-filtering-membrane combined recycle hydrogen purifying method and a device, providing the cyclone-filtering- membrane combined recycle hydrogen purifying method. The method comprises the following steps: performing cyclone separation on recycle hydrogen raw material gas to remove drops in the recycle hydrogen; filtering the recycle hydrogen raw material gas subject to cyclone separation to further remove fine drops in the recycle hydrogen; and performing membrane separation on the filtered recycle hydrogen raw material gas to remove impure gases in the recycle hydrogen so as to obtain concentrated hydrogen. The invention also provides the cyclone-filtering-membrane combined recycle hydrogen purifying device.

Description

technical field [0001] The invention belongs to the field of hydrogen production, and relates to a method for removing liquid droplets and impurity gases from circulating hydrogen. Specifically, the present invention relates to a cyclone-filtration-membrane combination type circulating hydrogen purification method, and the method used for implementing the method device. Background technique [0002] The petrochemical industry is a big hydrogen consumer. Over the years, in the petrochemical industry, hydrogen has been in short supply. As the raw oil becomes heavier and the requirement for octane number increases, the contradiction between supply and demand of hydrogen becomes more prominent. In recent years, hydrogen separation and recovery has been a key issue in the field of petrochemicals to be solved. [0003] At present, the methods for recovering hydrogen mainly include pressure swing adsorption, membrane separation, and cryogenic separation. Compared with the tradit...

Claims

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Application Information

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IPC IPC(8): C01B3/50B01D50/00B01D53/22
Inventor 沈其松汪华林杨强马良王剑刚吕文杰李志明谢嘉
Owner EAST CHINA UNIV OF SCI & TECH
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