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Air supply purifying device and air supply purifying method

A purification device and air-sealing technology, which is applied in the field of methanol synthesis and chemical industry, can solve the problem that air-sealed components cannot run stably for a long period of time.

Active Publication Date: 2015-08-19
CHNA ENERGY INVESTMENT CORP LTD +2
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0006] The main purpose of the present invention is to provide a gas supply purification device and a gas supply purification method to solve the problem in the prior art that the gas sealing components cannot run stably for a long period due to methanol and paraffin entrained in the gas

Method used

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Embodiment Construction

[0032] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0033] At present, in the methanol synthesis process, the centrifugal cycle gas compressor 303 is generally used to complete the pressure increase of the methanol synthesis cycle gas in the cycle process. In addition, the hermetically sealed supply air is taken from the fresh air supply compressor 302 (the compressor 302 is a centrifugal compressor). Because the circulating air compressor 303 and the fresh air supply compressor 302 are coaxial, they are placed in a cylinder, which is divided into two sections, commonly known as one cylinder with two sections, so that the fresh air supply compressor 302 and the circulation The air compressor 303 is required to be installed in one cylinder, whic...

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Abstract

The invention provides an air supply purifying device and an air supply purifying method. The air supply purifying device is used for purifying sealed air supply of an air sealing assembly in a methanol synthesis system, and comprises an air supply purifying first module and an air supply purifying second module, wherein the air supply purifying first module and the air supply purifying second module are in alternate operation, or the air supply purifying first module and the air supply purifying second module are in simultaneous operation; each of the air supply purifying first module and the air supply purifying second module comprises a cooler and a coalescer; an inlet of each cooler is communicated with an outlet of a fresh air supply compressor; an inlet of each coalescer is communicated with an outlet of the corresponding cooler; each coalescer separates out entrained impurities in sealed supply air; an outlet of each coalescer is communicated with a sealing cavity formed by the air sealing assembly. The technical scheme solves the problem that the air sealing assembly cannot stably operate for a long period due to methanol and paraffin entrained in the air in the prior art.

Description

technical field [0001] The invention relates to the field of methanol synthesis chemical industry, in particular to a gas supply purification device and a gas supply purification method. Background technique [0002] At present, the industrial production department is actually producing on the basis of the successful industrialization test of coal-to-olefins, and the smooth operation of the million-ton methanol synthesis unit is particularly important. In the million-ton methanol process successfully operated in China, the long-term and stable operation of the compressor is an important prerequisite for ensuring the smooth operation of the methanol plant. At present, during the operation of the methanol synthesis unit, due to the problems in the process system itself, a certain amount of paraffin and methanol are entrained in the cycle gas of the synthesis system. Synthetic methanol gas is used as the gas supply medium for the dry gas seal of the centrifugal compressor, and...

Claims

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Application Information

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IPC IPC(8): B01D49/00
Inventor 孙高攀薛振欣李雪冰张朝格贾瑞宝
Owner CHNA ENERGY INVESTMENT CORP LTD
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