Internally rotary dedusting type solid heat carrier and moving bed pulverized coal pyrolysis method and device

A technology of solid heat carrier and moving bed, applied in the field of coal chemical industry, can solve the problems of complex equipment process and large energy consumption, and achieve the effects of good separation effect, low investment cost and good thermal expansion performance.

Inactive Publication Date: 2015-09-09
神木市锦丰源洁净煤科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its temperature is 450-550°C, resulting in complex equipment pr...

Method used

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  • Internally rotary dedusting type solid heat carrier and moving bed pulverized coal pyrolysis method and device
  • Internally rotary dedusting type solid heat carrier and moving bed pulverized coal pyrolysis method and device
  • Internally rotary dedusting type solid heat carrier and moving bed pulverized coal pyrolysis method and device

Examples

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Embodiment 1

[0042] The pulverized coal of Xigou in Shenmu County is used as raw material, and the particle size distribution (mass percentage) of the pulverized coal is 8-6mm23%, 4-6mm45%, 4-2mm18%, <2mm14%. The pulverized coal is fed from the pulverized coal inlet 11 of the mixing tube 9, and the circulating semi-coke (temperature 750°C) enters from the heat carrier inlet 10 of the mixing tube 9, and the volume ratio of pulverized coal to high-temperature semi-coke is 1:3.5. The gas is fed into the gas inlet 12 of the mixing tube 9. Under the action of the gas thrust, the high-temperature hot semi-coke and pulverized coal are fully mixed in the mixing tube 9 and then enter the pyrolysis section h2. As the pulverized coal is heated by the high-temperature hot semi-coke, the temperature of the pulverized coal entering the pyrolysis section h2 reaches 550°C, and the pyrolysis gas generated by the heating of the pulverized coal rises into the cyclone separation section h1, and the pyrolysis g...

Embodiment 2

[0045] The pulverized coal of Inner Mongolia Pingzhuang lignite is used as the raw material, and the particle size distribution (mass percentage) of the pulverized coal is 8-6mm 19%, 4-6mm 48%, 4-2mm 18%, <2mm 15%. The pulverized coal is fed in from the pulverized coal inlet 11 of the mixing tube 9, and the high-temperature hot ash (temperature 850°C) is fed in from the heat carrier inlet 10 of the mixing tube 9, and the volume ratio of the pulverized coal to the high-temperature hot ash is 1:3.7. Under the action of the screw propeller 13, the solid heat-loaded high-temperature hot ash and pulverized coal are fully mixed in the mixing tube 9 and then sent to the pyrolysis section h2. As the pulverized coal is heated by high-temperature hot ash, the temperature of the pulverized coal entering the pyrolysis section h2 reaches 600°C, and the pyrolysis gas generated by the heating of the pulverized coal rises into the cyclone separation section h1, and the pyrolysis gas enters the...

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Abstract

The invention discloses an internally rotary dedusting type solid heat carrier and moving bed pulverized coal pyrolysis method and device. The internally rotary dedusting type solid heat carrier and moving bed pulverized coal pyrolysis device comprises a cylinder body, wherein an upper sealing head is arranged at the top of the cylinder body; a pyrolysis gas outlet is formed in the middle of the upper sealing head; a collecting pipe box is defined between the upper sealing head and a collecting pipe box sealing head connected with the upper sealing head; a plurality of cyclone separator sets communicated with the collecting pipe box are arranged at the lower part of the collecting pipe box sealing head; a plurality of mixing pipes are symmetrically arranged on the two sides of the cylinder body; a coal gas inlet, a pulverized coal inlet and a heat carrier inlet are formed in each mixing pipe; a tapered lower sealing head is arranged at the lower part of the cylinder body; a discharge pipe is arranged at the bottom of the lower sealing head; a circulating semicoke blanking pipe and a product semicoke blanking pipe are symmetrically connected to the discharge pipe, and the discharge pipe and the blanking pipes form an inverted Y-shaped pipe branch; a valve is arranged on each of the circulating semicoke blanking pipe and the product semicoke blanking pipe. The pulverized coal used as the raw material is adequate in source, cheap, and easy to obtain; the device and the method have the characteristics of being wide in application range, simple in technological process, relatively low in investment, easy to operate, safe, stable and the like.

Description

technical field [0001] The invention belongs to the field of coal chemical industry, and in particular relates to a method and device for pyrolysis of pulverized coal in a moving bed of solid heat carrier with internal rotation and dust removal. Background technique [0002] Over the years, a series of research and industrial production have been carried out at home and abroad on the production of semi-coke, gas and coal tar from low-rank coal (lignite, long-flame coal, non-caking coal, and weakly caking coal). At present, the typical process of industrialized production is to use lump coal (8-30mm) as raw material, and adopt internal heating type vertical furnace for industrialized production. However, in the process of mechanized coal mining in my country, lump coal with a size greater than or equal to 20mm accounts for about 35%, and pulverized coal equal to or less than 8mm accounts for about 35%. In the coal market, the general price of lump coal (greater than or equal...

Claims

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Application Information

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IPC IPC(8): C10B53/04
Inventor 郝银宝杭宝贵
Owner 神木市锦丰源洁净煤科技有限公司
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