Pyrolyzing furnace and gas-base shaft furnace combined system and method for processing coal

A technology of gas-based shaft furnace and pyrolysis furnace, which is applied in the direction of shaft furnace, removal of gas pollutants, furnace, etc., can solve the problems of irregular dust shape, heavy tar components, large dust content, etc., and achieve Low cost, increase the content of effective gas components, and reduce the effect of dust content

Pending Publication Date: 2016-11-23
SHENWU TECH GRP CO LTD
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AI Technical Summary

Problems solved by technology

[0004] However, the pyrolysis oil and gas produced by coal pyrolysis has complex components, heavy tar components, large dust content, and irregular dust shape. It requires subsequent installation of complex dust removal systems to process pyrolysis oil and gas to obtain coal-to-gas and high-quality tar

Method used

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  • Pyrolyzing furnace and gas-base shaft furnace combined system and method for processing coal
  • Pyrolyzing furnace and gas-base shaft furnace combined system and method for processing coal
  • Pyrolyzing furnace and gas-base shaft furnace combined system and method for processing coal

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Embodiment

[0064] The raw coal is pulverized to a particle size below 3mm and sent to the pyrolysis furnace and gas-based shaft furnace combined system to control the temperature in the pyrolysis furnace to 900℃. The pyrolysis furnace is equipped with multi-layer heating radiant tubes and particle moving bed dust removal system . The pyrolysis oil and gas are continuously cracked in the particle moving bed through the action of the catalyst to obtain high-quality pyrolysis oil and gas. After the high-quality pyrolysis oil and gas produced by the pyrolysis furnace are passed through the tar refining system of the separation and purification system, pyrolysis gas and high-quality oil can be obtained. The pyrolysis gas is processed by the reforming conversion system to obtain reducing gas, and the reducing gas directly enters the gas-based shaft furnace for production. The composition of the pyrolysis gas after the separation and purification system is shown in Table 1.

[0065] Table 1 Comp...

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Abstract

The invention discloses a combined system of a pyrolysis furnace and a gas-based shaft furnace and a method for processing coal. The system includes a pyrolysis furnace, a separation and purification system, a reforming transformation system and a gas-based shaft furnace; the pyrolysis furnace includes a pyrolysis furnace body and a particle moving bed, and the particle moving bed includes: a top plate, a side plate, The two wall panels and the retractable valve on the side wall form a cavity surrounded by the top panel, side panels, two wall panels and the side wall; this method pyrolyzes the raw coal, and the pyrolysis oil and gas produced go through the separation and purification system Reducing gas is obtained after treatment with the reforming conversion system, and the reducing gas is sent to the gas-based shaft furnace for iron and steel smelting. The system and method of the present invention effectively utilize pulverized coal that is usually difficult to utilize, and the dust content of pyrolysis gas generated by the pyrolysis furnace is low, reducing the production cost and energy consumption of the gas-based shaft furnace.

Description

Technical field [0001] The invention belongs to the technical field of stepwise utilization of coal, and in particular relates to a pyrolysis furnace and gas-based shaft furnace combined system for long flame coal, lignite and other medium and low-level pulverized coal, and a method for processing coal. Background technique [0002] The structural characteristics of coal itself determine that low-rank coal has high volatile content and strong activity. Due to high moisture and oxygen content and low heating value, direct utilization (combustion or gasification) efficiency is low, and its economic value is far inferior to high-rank coal. Therefore, Large-scale development and utilization of low-rank coal must first be processed and upgraded before it can be used in daily production. One of the most scientific and commonly used processing methods is pyrolysis, also called "dry distillation" or "thermal decomposition". Pyrolysis refers to a series of physical changes and chemical r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/04C10B47/20C10B47/28C10K1/00C10K1/02C10K1/10C10K3/00C10G45/02C21B13/02
CPCC10B53/04C10B47/20C10B47/28C10K1/002C10K1/004C10K1/026C10K1/028C10K1/10C10K3/00C21B13/0073C21B13/02
Inventor 梅磊陈水渺马正民姜朝兴吴道洪
Owner SHENWU TECH GRP CO LTD
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