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Method for purifying N2 from air by using rotary distributor

A rotary distributor and air technology, applied in the field of hydrogen production, can solve the problems of high production cost and complicated structure of the pipeline system, and achieve the effects of low production cost, simplified structure and improved adsorption capacity

Active Publication Date: 2022-07-15
SICHUAN TECHAIRS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The purpose of the present invention is to provide a rotary distributor for purifying N2 from air in order to solve the problems of complex system structure and high production cost caused by the need for a pipeline for each step of pressure swing adsorption in the prior art and that the pipelines cannot be shared. Methods

Method used

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  • Method for purifying N2 from air by using rotary distributor
  • Method for purifying N2 from air by using rotary distributor
  • Method for purifying N2 from air by using rotary distributor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] like Figure 1-2 As shown, a method for purifying N2 from air with a rotary distributor includes two adsorption towers and a rotary distributor.

[0050] The rotary distributor includes a housing and a flow channel distributor.

[0051] The casing is a stator, which is fixed after installation. A tower upper port is opened on the upper end face or the upper side of the shell, and a tower lower port is opened on the lower end face or the lower side of the shell; the tower upper port is used to communicate with the product outlet of the external adsorption tower, and the tower lower port is used to The adsorption diagram of the feed port is connected. In this embodiment, the number of adsorption towers is set to 2, that is, the upper port of the tower is also 2, namely the upper port of tower A and the upper port of tower B; the lower port of the tower is also 2, which are the lower port of tower A and the lower port of tower B respectively, like figure 1 , 2 shown. ...

Embodiment 2

[0067] On the basis of embodiment 1, two adsorption towers are A tower, B tower respectively, the flow channel distributor in the rotating rotary distributor, and carry out the adsorption process operation by the following steps:

[0068] In the interval of time slice 1, the A tower is in the adsorption state, the raw material gas enters the lower A cavity of the rotary distributor from the FG port, enters the A cavity at the top of the A tower and then enters the top A cavity of the rotary distributor from the top, and is sent out of the system from the PG pipe; B The tower is in a reverse discharge state, the top is not connected to the rotary distributor, the bottom is connected to the lower D cavity of the rotary distributor, and the gas is sent out of the system through the DG port;

[0069] In the interval of time slice 2, tower A maintains the adsorption state, and the airflow remains unchanged; tower B is in the reverse discharge state and the airflow remains unchanged;...

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Abstract

The invention discloses a method for purifying N2 from air by using a rotary distributor, relates to a device for purifying N2 from air, and aims to solve the problem that in the prior art, a pipeline is needed in each step of pressure swing adsorption and cannot be shared, so that the system structure is complicated. The rotary distributor is creatively used, the rotatable flow channel distributor is arranged in the shell of the rotary distributor, the independent functional chambers with multiple functions are arranged in the flow channel distributor, and when the functional chambers with different functions are communicated with or disconnected from the corresponding adsorption towers, the functional chambers with different functions can be separated from the corresponding adsorption towers. The corresponding adsorption towers are in the stages of adsorption, pressure drop, pressure rise, clockwise release, counterclockwise release, flushing, final charging or maintaining, and the stages are switched; the rotary distributor can replace an original rotary valve, a complex adsorption pipeline does not need to be arranged, complex bridge wiring, programming and other work do not exist, the structure of an adsorption system is more simplified, and the production cost is lower.

Description

technical field [0001] The invention belongs to the technical field of hydrogen production, relates to a method for producing hydrogen from reformed gas, and more particularly to a method for producing hydrogen from reformed gas by using a rotary distributor. Background technique [0002] The production process of conversion to hydrogen is maturely applied in chemical industry, and its raw material sources are wide. It can use methanol or natural gas or biogas or coal or petroleum or refining gas to carry out steam reforming to obtain the reformed gas, and then use the PSA process for separation and purification. The output can be 100~40000Nm3 / h. [0003] In the process, the axial fixed bed (AFB) is generally used in pressure swing adsorption, that is, a columnar adsorption tower with a height-to-diameter ratio of more than 1.5 is used to fill the adsorbent, installed vertically, and the gas passes through the adsorption bed in the vertical direction (axial). [0004] The A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/04B01D53/047C10L3/10
CPCB01D53/0446B01D53/047C10L3/10B01D2256/10B01D2259/40001B01D2259/40011
Inventor 钟雨明陈运汪兰海詹家聪陈勇蔡跃明
Owner SICHUAN TECHAIRS