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Coal tar removal device based on slurry state bed coupling and method thereof

A coal tar removal technology, applied in the removal of gas pollutants, gas dust removal, petroleum industry and other directions, can solve the problems of large waste water, difficult to remove light tar, etc., to enhance internal disturbance and improve absorption efficiency. Effect

Pending Publication Date: 2018-10-19
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this process produces a large amount of phenolic wastewater, especially in the water-scarce areas of western my country. This technology has caused a major bottleneck. The development of sustainable and efficient recycling of tar removal technology is the future direction of gasification technology development.
In addition to producing a large amount of wastewater, these current technologies are also difficult to remove light tar in depth

Method used

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  • Coal tar removal device based on slurry state bed coupling and method thereof
  • Coal tar removal device based on slurry state bed coupling and method thereof
  • Coal tar removal device based on slurry state bed coupling and method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] as attached figure 1 , 3 shown

[0031] The present invention provides a coal tar removal device based on paddle bed coupling. The coal tar removal device based on paddle bed coupling includes a gasifier 1, a cyclone separator 2, a heat exchanger 3, a high temperature dust collector 4, Slurry bed 5, cooler 6, decanter 7, mixing kettle 8, first moving bed 9, second moving bed 10, valve 11, screw feeder 12 and steam tank 13; The feed port passes through the feed port at the bottom of the pipeline gasifier 1, the outlet of the gasifier 1 is connected to the inlet of the cyclone separator 2, the gas outlet on the cyclone separator 2 is connected to the inlet of the heat exchanger 3 through the pipeline, and the cyclone separator 2 The ash hopper at the lower end is connected to the interior of the gasifier 1 through a pipeline, the outlet of the heat exchanger 3 is connected to the inlet of the high-temperature dust collector 4 through a pipeline, the outlet of the high-t...

Embodiment 2

[0040] as attached figure 2 As shown, this device can also be applied to the removal of sulfides. The gasification gas generation process is the same as in Example 1. The gasification gas in this embodiment directly enters the first moving bed 9 and the second moving bed 10 to remove light and The heavy tar then enters the slurry bed 5 for removal of other pollutants such as sulfides, reducing the difficulty of subsequent gasification gas treatment. Among them, after the moving bed is saturated with adsorbed tar, online hot air regeneration is carried out, and the hot air mixed with tar enters the gasification furnace for gasification with coal powder, and the desorption medium for circulation regeneration can be gasification gas.

[0041] In view of the different middle fractions and physical properties of the components in the tar, the heavy components and light components in the tar are removed in two steps. Slurry bed absorption is mainly used to absorb heavy tar, and ci...

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Abstract

The invention provides a coal tar removal device based on slurry state bed coupling and a method thereof. The coal tar removal device is characterized in that a discharging opening of a spiral feedingdevice passes through a feeding opening formed in the bottom of a pipeline gasification furnace; an outlet of the gasification furnace is communicated with a gas inlet of a cyclone separator; a gas outlet of the cyclone separator is communicated with an inlet of a heat exchanger through a pipeline; a dust hopper arranged at the lower end of the cyclone separator is communicated with the inside ofthe gasification furnace through a pipeline; an outlet of the heat exchanger is communicated with an inlet of a high-temperature dust remover through a pipeline; an outlet of the high-temperature dust remover is communicated with an inlet at the bottom of the slurry state bed through the pipeline. The method comprises the following technical steps of gasification, solid gas separation, secondarydust removal, absorption and purification. No secondary pollution is generated. Compared with the water washing purification technology, no great amount of aqua carbolisata is generated; the investment cost improvement and environment pollution caused by aqua carbolisata treatment are avoided; the difficulty in light tar treatment in the water washing process is avoided; the tar removal efficiencyis high; the staged adsorption is realized on the tar; meanwhile, the liquid phase absorption and solid adsorption are integrated; the adsorption removal efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of coal tar removal, and in particular relates to a coal tar removal device based on paddle bed coupling and a method thereof. Background technique [0002] my country is a large coal-burning country, accounting for more than 70% of the primary energy. With the demand for clean energy and the improvement of national environmental protection standards, it is the future development to convert carbon-containing raw materials such as coal and biomass into clean combustible gas by gasification. important direction. In domestic development, entrained bed, conveying bed and circulating fluidized bed have gradually replaced fixed bed moving bed as the main gasification technology. The main components of gasification gas are CO2, CO, H2, CH4 and other hydrocarbons. In the process of gasification gas generation, impurities such as tar, carbon black and ash will also be formed. It also contains sulfides and nitrogen-co...

Claims

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Application Information

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IPC IPC(8): C10J3/84C10J3/56C10K1/00C10K1/02C10K1/32
CPCC10J3/56C10J3/84C10K1/002C10K1/02C10K1/024C10K1/026C10K1/32C10J2300/093C10J2300/1603
Inventor 任雪峰康国俊王全德刘玲刘滋武程海燕马金凤任相坤
Owner CHINA UNIV OF MINING & TECH