Integrated cooling separator and operating method thereof

Abstract

The invention relates to an integrated cooling separator and an operating method thereof. The integrated cooling separator comprises a separator body, a gas inlet pipe, a circulation liquid spraying pipe, a vortex plate demister and a base, wherein the separator body comprises a conical head, a cylinder and an ellipsoidal head; a gas outlet is formed in the top of a conical head; the gas inlet pipe comprises a horizontal pipe section, a 90-degree bend and a vertical pipe section; the circulation liquid spraying pipe extends into the vertical pipe section of the gas inlet pipe; a nozzle of thecirculation liquid spraying pipe is vertically upward in a liquid spraying direction; the vortex plate demister is arranged between the vertical pipe section of the gas inlet pipe and the side wall ofthe cylinder. The integrated cooling separator has the advantages that cooling, washing and separating technologies are integrated in one device, raw gas is cooled and washed in a mode of reverse impact of the raw gas and circulation liquid, and the contact area between the raw gas and circulation liquid is enlarged; a gas-liquid separation mode is improved according to a principle that centrifugal force and vapor liquid ratios are different, so that the cooling, washing and separating efficiency is improved, and the purpose of reducing the cost is achieved.

Description

technical field [0001] The invention relates to the technical field of high-temperature coal gasification, in particular to an integrated cooling separator for high-temperature coal gas and a working method thereof. Background technique [0002] In the coal pressurized gasification process, the temperature of the crude gas produced by coal gasification is very high. The current conventional cooling and separation method is as follows: first spray the circulating liquid in the washing cooler to cool the crude gas, and clean the entrained coal powder and impurities. . The crude gas coming from the washing cooler and carrying a large amount of circulating liquid enters the inlet pipe of the waste heat boiler. In the lower chamber, the oil and gas are separated, and the crude gas enters the heat exchange tube to exchange heat and condense with the water outside the tube. The lower chamber is an inverted cone for coarse separation of circulating fluid and tar. In the above-ment...

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Problems solved by technology

In the above-mentioned cooling and separation method, the cooling method of spraying the crude gas with circulating liquid is adopted, but in the actual application process, it is found that due to insufficient gas-liquid contact in the conventional washing cooler, the cooling and washing efficiency is low; the lower chamber of the waste heat boiler can only achieve preliminary The gas-liquid separation is relatively low, and the separation efficiency is also low; the circulating liquid and tar entrained in the crude gas are attached to the inner wall of the heat exchange tube, which greatly reduces the heat transfer coefficient and greatly increases the required heat exchange area.

The efficiency of cooling, washing, condensation, and separation in the above working process seriously affects the production cost, which is not conducive to the long-term operation of the coal chemical plant

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