Light oil recovery device of distillation system

Abstract

The invention relates to a light oil recovery device of a distillation system. The light oil recovery device comprises a tank body (1), wherein the interior of the tank body (1) is divided by a longitudinal partition plate (2) into an area I (3) and an area II (4), the top of the area I (3) is connected with a condensed oil-gas inlet pipeline (5), the bottom of the area I (3) is connected with an ammonia water discharging pipeline (6), the top of the area II (4) is connected with a non-concentrated gas discharging pipeline (7), and the bottom of the area II (4) is connected with a light oil discharging pipeline (8). By adopting the light oil recovery device, the oil-water gas vaporized from the top of a distillation tower can be completely separated and recovered, the excessive loss of the light oil component can be avoided, the processing cost can be reduced, and the running benefit of the device can be improved; in addition, the oil gas can be prevented from being directly discharged to the atmosphere, the energy conservation and emission reduction can be realized on the aspect of the environmental protection, and the environmental pollution can be reduced.

Description

technical field [0001] The invention belongs to the field of raw material recovery equipment, and relates to a light oil recovery device in a distillation system. Background technique [0002] Coal tar is a black or dark brown viscous liquid obtained in the process of coal coking. Its specific gravity is higher than that of water. It has certain solubility and special odor. One of the products in coal gas, its output accounts for about 3%-4% of the furnace coal. Coal tar is the main raw material of the coal chemical industry. In the distillation of coal tar, as the temperature of the tar rises, a large amount of gas will be produced, including water vapor and light oil gas. This part of the gas comes out from the top of the tower. If it is not recovered Directly venting will pollute the environment more, and will lose a lot of light oil, which will increase the cost consumption. Therefore, need to invent a kind of recycling device to overcome the above-mentioned problems....

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Problems solved by technology

[0003] The purpose of the present invention is to provide a light oil recovery device in the distillation system, which solves the problem that water vapor and light oil gas are directly discharged into the atmosphere in the distillation of coal tar, which causes great environmental pollution, loses a lot of light oil, and increases cost consumption.

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