Separation device for high temperature products of coal pyrolysis

Abstract

The invention provides a separation device for high temperature products of coal pyrolysis. An gas-solid feeding opening is formed in one side of the upper end of a straight cylinder part and communicates with a cylinder inner cavity in the tangential direction of the cylinder wall; a heating media outlet is formed in the other side of the upper end of the straight cylinder part; a central pipe is arranged in the axial direction of the straight cylinder part and extends upward to the top end of the straight cylinder part to serve as a gas outlet; a filter screen is arranged in the gas outlet; the central pipe extends downward to the lower portion of a conical cylinder part; a circular-truncated-cone-shaped metal filter element and a conical gas collector are arranged at the bottom end of the central pipe; and a solid material outlet and a hot media inlet are formed in the lower portion of the conical cylinder part. According to the separation device for the high products of coal pyrolysis, intorting upflow is separated by the conical gas collector and the filter element quickly and effectively, and the separation effect is good; heating media are led into a cylinder interlayer to keep the temperature of gas-solid materials, tar precipitation is prevented, and material losses are reduced; and the separation efficiency and purity are further improved through the metal filter element and the filter screen arranged in the central pipe.

Description

technical field [0001] The invention relates to a high-temperature gas-solid separation device, in particular to a high-temperature gas-solid separation device for coal pyrolysis gas applied in the field of coal chemical production. Background technique [0002] At present, the separation of high-temperature gas-liquid-solid products of coal pyrolysis still adopts the method of increasing the steam temperature to convert liquid tar into gaseous steam, which is separated into gaseous products and solid semi-char products through a cyclone separator. In order to improve the separation efficiency, relevant researchers use cyclone separator and electrostatic precipitator combined device. Cyclone separators are widely used in industrial gas-solid separation because of their simple structure, low investment, and low operating costs. However, the cyclone separator is very difficult to separate the coal pyrolysis products. The coal pyrolysis products mainly include gaseous gas, liq...

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Problems solved by technology

However, the cyclone separator is very difficult to separate the coal pyrolysis products. The coal pyrolysis products mainly include gaseous gas, liquid tar and solid semi-coke. The centrifugal force generated when the separator rotates is small, and it is easy to float when it moves toward the air wall and is not easy to be separated out with the airflow. The purity of the coke product is low, and the tar liquid will also stick to the wall of the cyclone separator to reduce the separation efficiency of the cyclone separator and bring great difficulty to the cleaning of the cyclone separator

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