Feed gas separation method and apparatus of coal gasification apparatus
A kind of separation method, raw material gas technology
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[0034] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. However, it should not be construed that the scope of the above-mentioned subject matter of the present invention is limited to the following examples.
[0035] As shown in the figure, the method for separating using the separation device of the present invention includes the following steps:
[0036] (1) The purified raw gas is cooled to -165°C—-160°C in the heat exchanger E601;
[0037] (2) The cooled raw synthesis gas enters the scrubber T601, and the reflux ratio of the scrubber is controlled to be 0.05-0.1 according to the content of methane in the raw synthesis gas; the higher the methane content, the greater the reflux ratio, as an embodiment of the present invention When the methane content is 10%, the reflux ratio is 0.07, and when the methane content is 12%, the reflux ratio is 0.1. To obtain synthesis gas with CH4 content l...
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