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Pressurizing process for air separation

A process and air separation technology, applied in the field of air separation plants, can solve the problems of compressor flow and pressure instability, hazards, and shortened life.

Pending Publication Date: 2021-09-14
KAIFENG DEAR AIR SEPARATION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Surge is usually manifested as rapid air flow and pressure oscillation, which makes the flow and pressure of the compressor extremely unstable, resulting in reduced efficiency of the compressor; shortened life; serious hazards, so an anti-surge control system must be used to ensure safe operation of the equipment

Method used

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  • Pressurizing process for air separation
  • Pressurizing process for air separation
  • Pressurizing process for air separation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0036] The invention provides a kind of air separation pressurization process, with reference to Figure 4 , as a specific implementation, the pressurization process includes the following steps:

[0037] Step 1: Control the operation of the air compression system 1 to filter the air through the air filter device 3 to remove impurities in the air.

[0038] Step 2, the gas is compressed by the air compression system 1, and the air with a preset pressure is output from the air outlet, and the air intake parameters and the air output parameters of the air compressor 11 in the air compression system 1 are collected through the data acquisition module, and passed to the data analysis module.

[0039] Step 3: The data analysis module controls the work of the execution module by analyzing the data, and adjusts the intake parameters and / or output parameters so that each gas parameter is outside the surge area.

[0040]Specifically, since the root cause of the surge phenomenon of the...

Embodiment 2

[0049] In order to better use the above air separation pressurization process to compress the air, the pressurization process also includes a pressurization tower for air separation, which can eliminate the surge phenomenon in the process of compressing air in the air separation unit, and improve The service life of the air compressor unit in the compression system, reducing energy consumption, specifically, refer to Figure 1-Figure 3 , as a specific embodiment, the booster tower includes an air compression system 1 and a power system 2 for driving the air compression system 1, and an air filter device 3 is connected to the air intake end 1a of the air compression system 1 , the air outlet 1b of the air compression system 1 communicates with the air precooling system of the air separation plant, the air compression system 1 is also provided with a control system, and the control system includes a data acquisition module, a data analysis module and an execution module, The dat...

Embodiment 3

[0064] In order to verify the technical effect of the technical solution of the present invention, verify by following two experiments:

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PUM

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Abstract

The invention discloses a pressurization process for air separation. The pressurization process comprises the following steps that step one, an air compression system is controlled to work, air is filtered through an air filtering device, and impurities in the air are removed; step two, the air is compressed through the air compression system, air with preset pressure is output from an air outlet end, and air inlet parameters and air outlet parameters of an air compressor in the air compression system are collected through a data collection module and transmitted to a data analysis module; and step three, the data analysis module controls an execution module to work and adjusts the air inlet parameters and / or the air outlet parameters by analyzing the data, so that all the air parameters are located outside a surge area, and the surge phenomenon in the pressurization process can be avoided.

Description

technical field [0001] The present invention generally relates to the technical field of air separation devices, in particular to an air separation pressurization process. Background technique [0002] The air separation unit control system is divided into air compressor system, air pre-cooling system, molecular sieve purification system, booster turbo expander system, fractionation tower system, etc. Its working principle is: compress the air to a predetermined pressure through the air compression system, Then the compressed air is cooled by the air pre-cooling system, and then the carbon dioxide, acetylene and other hydrocarbons in the air are removed by the molecular sieve purification system to obtain relatively pure air. The supercharged turbo expander system is an air separation unit The refrigeration system, the fractionation tower is to fractionate the air to obtain pure liquid oxygen and liquid nitrogen, and the air compression system mainly compresses the air throu...

Claims

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Application Information

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IPC IPC(8): F04D17/12F04D27/02F04D29/00F04D29/58F04D29/66
CPCF04D17/12F04D27/0253F04D29/002F04D29/582F04D29/667
Inventor 朱克嘉张小勇温涛
Owner KAIFENG DEAR AIR SEPARATION IND