System optimization process capable of improving compression effect of synthesis gas compressor and equipment thereof

A gas compressor and system optimization technology, which is applied in the field of synthesis gas preparation, can solve the problems of increased rotation speed and steam consumption, poor heat exchange effect of water cooler, and increased temperature of liquid ammonia at the outlet, so as to achieve long service life and reduce production. load, the effect of reducing steam energy consumption

Active Publication Date: 2021-03-16
灵谷化工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the high temperature period in summer, due to the increase of ambient temperature, the temperature of the circulating water cooling tower is increased, the water temperature of the circulating water cooling tower is further increased, the temperature of the circulating cooling water continues to rise, and the temperature of the circulating water is as high as 35°C. The heat transfer effect further deteriorates, resulting in a vicious circle
Therefore, under the same load, the temperature of the liquid ammonia at the outlet of the ammonia cooler continues to rise, the vacuum degree of the two units also decreases, the speed and steam consumption of the two units increase, and the production load is limited to a certain extent

Method used

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  • System optimization process capable of improving compression effect of synthesis gas compressor and equipment thereof
  • System optimization process capable of improving compression effect of synthesis gas compressor and equipment thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A system optimization process that improves the compression effect of synthetic gas compressors, mainly including the following steps:

[0028] S1, the preparation of the raw material gas

[0029] The syngas is from the boundary, and the synthesis gas compressor separation tank is passed through a cutout valve, and the pressure value of the separating gas compressor separation can exit is: 2500 kPa, so that the feed gas is separated by the synthesis gas compressor to separate the tank, its group Sub-volumes in the following range according to volume fraction: h 2 : 75%, N2 : 25%, while: CO + CO 2 + O 2 = 0.8ppmv, Ar + ch 4 = 1.6ppmv;

[0030] S2, syngas compression

[0031] The feeder air in S1 is incorporated into the centrifuge compressor in the synthesis gas synthesis tower, the centrifugal compressor supplies power through a steam turbine, and two surface coolers for different working load processing on the steam turbine. The ratio of the amount of insertion of nitrogen...

Embodiment 2

[0041] Unlike the embodiments

[0042] S1, the preparation of the raw material gas

[0043] The synthetic gas is from the boundary, and the synthesis gas compressor separation tank is passed through a cutout valve, and the pressure value of the separating gas compressor separation tank is controlled is: 2800 kPa, so that the feed gas is separated from the synthesis gas compressor to separate the tank, the group Sub-volumes in the following range according to volume fraction: h 2 : 75%, N 2 : 25%, while: CO + CO 2 + O 2 = 0.8ppmv, Ar + ch 4 = 1.6ppmv;

[0044] S2, syngas compression

[0045] The feeder air in S1 is incorporated into the centrifuge compressor in the synthesis gas synthesis tower, the centrifugal compressor supplies power through a steam turbine, and two surface coolers for different working load processing on the steam turbine. The ratio of the amount of insertion of nitrogen and hydrogen by bypass is: 3.3: 1 to the centrifugal compressor, the multi-stock gas is mix...

Embodiment 3

[0048] Different from the second embodiment

[0049] In S3, the line entering the first bed of the first bed is: First: the gas flows from the ammonia to the tower gap to the first catalyst bed heat exchanger to the first bed; the second: gas passes The strip cold wire flows into the first bed; Article 3: The gas flows through the second catalytic bed heat exchanger to the first bed; Article 4: The gas is started to the first bed of the first bed by the heater.

[0050] Through the use of one year and data record: The average value of the vacuum value in the synthetic gas compressor is: -83 kPa (g), and the average steam consumption of the compressor is: 74.58t / h.

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Abstract

The invention discloses a system optimization process capable of improving the compression effect of a synthesis gas compressor. The system optimization process mainly comprises the following steps: S1, preparing feed gas; S2, compressing the synthesis gas; S3, converting the synthesis gas into ammonia, connecting a synthesis tower outlet water cooler in parallel on the basis of an original synthesis tower outlet water cooler in the process steps, changing an existing combined NH3 condenser into two same NH3 condensers which are connected in parallel, additionally arranging a rubber ball cleaning device, and connecting two intermittent coolers in parallel. Under the condition that normal production is guaranteed, the energy consumption of the unit is reduced, the steam consumption of the unit is reduced, the rubber ball cleaning device is used for cleaning the inner wall pipe of the heat exchange equipment, the influence of scale resistance on the total heat transfer coefficient is reduced, the heat exchange efficiency is higher under the same energy consumption, and the process is suitable for wide popularization.

Description

Technical field [0001] The present invention relates to the field of synthesis gas preparation, and more particularly to a system optimization process and apparatus which can improve the compression effect of syngas. Background technique [0002] KBR synthetic ammonia systems have been applied in numerous large fertilizer production projects and have achieved better results. However, during the high temperature in the summer, due to the increase in the ambient temperature, the temperature of the circulating water cooling tower is improved, the water temperature of the circulating water cooling tower is further improved, the temperature of the circulating cooling water continues to increase, the circulating water temperature is as high as 35 ° C, the water cooler The heat exchange effect is further deteriorated, producing a vicious circle. Therefore, under the same load, the ammonia ammonia temperature of the amino is continuously increased, and the vacuum of the two units also de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/02C01C1/04F28G1/12
CPCC01B3/025C01C1/0417F28G1/12Y02P20/10
Inventor 谈成明钱林明董仲美单亚军丁键顾敏陈辉邱正辉
Owner 灵谷化工集团有限公司
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