Combined type coal tar recycling equipment and coal tar recycling method thereof

Abstract

The invention discloses combined type coal tar recycling equipment and a coal tar recycling method thereof. The combined type coal tar recycling equipment comprises a pedestal, a rotating cylinder and a protective cover, wherein the upper surface of the pedestal is connected with the rotating cylinder in a clamping manner through a groove; the side walls of the pedestal are connected with the protective cover in a clamping manner through clamping slots; the pedestal is provided with a rotating shaft extending into the rotating cylinder; the shaft wall of the rotating shaft is connected with a dropping funnel, a filtering layer and a turbofan in a sleeving manner in sequence from bottom to top; an air negative pressure machine and an oil pump are arranged on the outer wall of the rotating cylinder; the air negative pressure machine is connected with a negative pressure pipe; the oil pump is connected with a liquid extraction pipe and a spraying pipe; the spraying pipe is connected with a high pressure spraying head; the rotating cylinder is provided with a liquid discharging pipe and a gas feeding pipe. The coal tar recycling method comprises a centrifugal separation method, a cyclone separation method and a coal tar mutual adsorption and separation method. By combination with the centrifugal separation method, the cyclone separation method and the coal tar mutual adsorption and separation method, the combined type coal tar recycling equipment is high in gas-liquid separation efficiency; furthermore, by use of high temperature in raw coke oven gas, the combined type coal tar recycling equipment has the effects of saving energy and reducing discharging.

Description

technical field [0001] The invention relates to the technical field of coal tar recovery, in particular to a combined coal tar recovery equipment and a coal tar recovery method. Background technique [0002] Coal tar is also called coal paste, coal distillate, and coal tar solution. It 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. It is flammable and corrosive. Coal tar is produced in the crude gas generated by pyrolysis of coking industrial coal. One of the products, its output accounts for about 3% to 4% of the furnace coal, and its product is black viscous liquid at normal temperature and pressure. Coal tar is the main raw material of the coal chemical industry, with tens of thousands of components, mainly containing aromatics such as benzene, toluene, xylene, naphthalene, anthracene, and aromatic oxygen-containing compounds (such as phenolic c...

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Problems solved by technology

The purification efficiency of the cooling washing method is low, but the cost is low and the processing capacity is strong; the purification efficiency of the electric tar capture method is high, and the working resistance is small, but during the operation, the surface of the electrode is easy to accumulate oil dirt to form an oil film layer, which hinders the discharge of the electrode. Seriously reduce the treatment effect. In addition, there are accumulated oil stains that are not easy to clean, high equipment cost, and a large area; the absorption equipment of the adsorption method is huge, occupies a large area, and the absorbent regeneration operation is difficult, and it is difficult to recycle.

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