Coal gas cooling device and using method thereof

Abstract

The invention discloses a coal gas cooling device and a using method thereof. The coal gas cooling device comprises a shell, a coal gas inlet is formed in the upper end of the shell, a coal gas outlet is formed in one side of the lower end of the shell, a drain outlet is formed in the other side of the lower end of the shell, and a spraying layer, a cooling section and a liquid breaking layer are arranged in the shell from top to bottom; and the cooling section is provided with a cooling water inlet, a cooling water outlet, a steam inlet and a steam outlet, the liquid stopping layer communicates with a liquid outlet formed in the side wall of the shell, and a heating layer used for heating dirt deposited at the bottom of the shell is arranged at the bottom of an inner cavity of the shell. According to the cooling device, the multiple layers of cooling sections are arranged in the shell from top to bottom, the multiple layers of cooling sections form a coal gas direct flow cooling channel in the shell, the direct flow channel is adopted, heat exchange is free of dead angles, the cooling effect is good, cleaning is convenient, scaling is avoided, gas resistance is small, and subsequent processes and an air blower are facilitated. The device is small in overall size, small in occupied area and convenient to transport and mount.

Description

technical field [0001] The invention relates to the field of gas cooling, in particular to a gas cooling device and its usage method. Background technique [0002] The raw gas produced by the existing coke ovens in China is cooled by the horizontal tube primary cooler. The raw gas, tar and ammonia water from the coke oven go to the gas-liquid separator along the gas pipeline. After the gas-liquid separation, the raw gas comes out from the upper part and enters the Multiple horizontal tube primary coolers operated in parallel are cooled in three stages. In order to ensure the cooling effect of the primary cooler, a mixture of tar and ammonia water is continuously sprayed on the upper and lower sections, and the top is regularly washed with hot ammonia water to remove impurities such as tar and naphthalene on the pipe wall, but the effect is not good. The heat exchange tubes of the primary cooler are densely arranged, tar, cinder, naphthalene oil and other media will stick to...

AI Technical Summary

Problems solved by technology

In order to ensure the cooling effect of the primary cooler, a mixture of tar and ammonia water is continuously sprayed on the upper and lower sections, and the top is regularly washed with hot ammonia water to remove impurities such as tar and naphthalene on the pipe wall, but the effect is not good. The heat exchange tubes of the primary cooler are densely arranged, tar, cinder, naphthalene oil and other media will stick to the tube wall after cooling, and accumulate for a long time to fill the gap between the tubes, causing the gas to not circulate, and the resistance of the whole cooler increase, the heat transfer effect decreases, and the increase in gas temperature brings operational difficulties to subsequent sections

Images