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Method for reducing pressure of transformation system by extracting air

A technology for changing the system and pressure, which is applied in the field of reducing the pressure of the changing system by air extraction, which can solve the problems such as the limitation of the production capacity of the changing catalyst and the inability to increase the use pressure of the changing position, and achieve the effect of improving the gas transmission capacity.

Active Publication Date: 2013-01-09
HUBEI DAJIANG CHEM GRP
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Problems solved by technology

The general service life of the conversion catalyst in synthetic ammonia is 3-5 years. In actual use, manufacturers try to increase the output in order to maximize the capacity of the device. However, due to the design pressure limit of the conversion system, the operating pressure of the conversion position cannot be increased, resulting in the production capacity of the conversion catalyst being limited. limit

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  • Method for reducing pressure of transformation system by extracting air

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Embodiment

[0011] Example: As shown in the figure, during the first to sixth stage of compression in the synthetic ammonia production process, the incoming gas from the gas tank g enters the first stage of compression, passes through the second stage of compression to the transformation and depletion h, and the depleted incoming gas f enters the third stage of compression. , From the third stage compression to decarburization c, the decarburization incoming gas b enters the fourth stage compression, from the fifth stage compressed gas to the refining a, the refined incoming gas e enters the sixth stage compression, from the sixth stage compression to the synthesis d, When the present invention is implemented, in the conversion station of the synthetic ammonia production process, the outlet header 5 of the conversion is used to pump air by the compressor 4 to reduce the outlet pressure of the conversion system, thereby reducing the pressure of the conversion system.

[0012] The compressor 4 ...

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Abstract

The invention discloses a method for reducing pressure of a transformation system by extracting air. In a transformation station of a synthetic ammonia production process, the air is extracted at a transformation outlet header pipe by using a compressor, so that the outlet pressure of the transformation system is reduced and the pressure of the transformation system is further reduced. When the air is extracted at the transformation outlet header pipe by using the compressor, the air compressed to certain pressure by the compressor is delivered to a system header pipe of a decarburization section, so that the effects of reducing the pressure and improving the yield are achieved. According to the method for reducing the pressure of the transformation system by extracting the air, the air is extracted at the transformation outlet header pipe by using the compressor, so that the outlet pressure of the transformation system is reduced and the pressure of the transformation system is further reduced; and the air compressed to certain pressure by the compressor is delivered to the system header pipe of the decarburization section, so that the effects of reducing the pressure and improving the yield are achieved.

Description

Technical field [0001] The invention relates to a method of changing process piping and using a modified compressor to reduce the pressure of a conversion system in the production of synthetic ammonia from a coal chemical industry. Background technique [0002] Synthetic ammonia conversion station: The semi-water gas from the second stage of compression is used at a certain temperature and pressure to make the steam react with CO with the help of a catalyst, so as to save steam as much as possible to generate CO 2 And H 2 , Produce qualified shift gas, and reasonably recover the heat in the system. [0003] Compressor position: The semi-water gas sent from the desulfurization section is compressed and boosted by the first and second compressors, and then sent to the transformation, decarbonization, and PSA decarburization sections. The purified crude degassed gas is returned to the third input of the compressor. After three-stage compression and boosting, it is sent to the decarbur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/00C01B3/12C01B3/50C01C1/04
CPCY02E60/324Y02E60/32
Inventor 宋爱华曹欣王兵李慧腾张建伟
Owner HUBEI DAJIANG CHEM GRP
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