Coal gas cooling and separating apparatus and method

Abstract

The invention relates to a coal gas cooling and separating apparatus and method. The coal gas cooling and separating apparatus comprises a cooling washer, a bubbling element, a gas-liquid mixer, a tarprecipitating tank, a tar cooler, a cyclone separator, and an outer barrel; the cooling washer, the tar precipitating tank, the tar cooler and the outer barrel are of an integrated structure; the tarprecipitating tank is connected with the upper portion of the cooling washer by virtue of a pump, the bottom of the tar precipitating tank is provided with a precipitated tar outlet, and the tar precipitating tank is provided with a heavy tar inlet; the tar precipitating tank is connected with the tar cooler; and the top of the tar precipitating tank is connected with the outer barrel, the cyclone separator is fixed inside the outer barrel, and a coal gas outlet is formed in the top of the outer barrel. The coal gas cooling and separating apparatus has the advantages that by adopting the integrated structure, the device integration degree is high, the apparatus is used for washing, cooling, mixing and separating the coal gas, the gas and the liquid sufficiently contact and are sufficiently mixed, the collision probability of the washing liquid and impurity particles is increased, the washing cooling efficiency is increased, the process equipment is reduced, the floor occupation area is reduced, and the cost is decreased.

Description

technical field [0001] The invention relates to high-temperature gas rapid cooling equipment, in particular to a gas cooling and separation device and method. Background technique [0002] In the gas purification process, the raw gas sent by the waste heat boiler needs to be cooled quickly by spraying heavy tar in the quencher. After cooling down, it enters the oil and gas separator for oil and gas separation. The raw gas leaves from the top and enters the gas cooler. The heavy tar is pumped out from the bottom of the oil-gas separator by the heavy oil transfer pump, and most of it is sent to the low-temperature heat exchanger to exchange heat with desalinated water, then cooled to 180°C, returned to the quencher for circulating spraying, and the rest is sent directly to the old collector trachea. The quenching efficiency of this process is not high, and the solid impurities contained in the gas cannot be washed, and the equipment is many and scattered, and the cost is too ...

AI Technical Summary

Problems solved by technology

The quenching efficiency of this process is not high, and the solid impurities contained in the gas cannot be washed, and the equipment is many and scattered, and the cost is too high

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