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Method for producing carbonized coal/coke for gasification by large tamping briquette on coke oven

A tamping coal, large-scale technology, applied in coking ovens, solid fuels, special forms of dry distillation, etc., can solve the problems of low energy utilization rate, difficult coke pushing, etc., to reduce environmental hazards, reduce processing costs, and reduce pollutant content Effect

Inactive Publication Date: 2014-08-20
太原四联重工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The baked product of this method contains a large amount of powder, and the energy utilization rate is low due to cyclic carbonization. More importantly, too much powder will cause problems such as difficulty in coke pushing.

Method used

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  • Method for producing carbonized coal/coke for gasification by large tamping briquette on coke oven
  • Method for producing carbonized coal/coke for gasification by large tamping briquette on coke oven
  • Method for producing carbonized coal/coke for gasification by large tamping briquette on coke oven

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A. Preparation of coal modified binder

[0041] Take 300 mesh Inner Mongolia lignite pulverized coal 35wt%, water 32wt%, formic acid 31wt% and potassium carbonate, sodium oxide or potassium oxide 2wt% according to mass parts and mix them uniformly, and heat up to 350℃ in an autoclave and react for 30min. After the reaction is over, the reactor is cooled to room temperature, and the filtered solid product is the coal modified binder.

[0042] The caking index tester was used to measure the coal briquette binder in accordance with GB / T 5447-1997, and the caking index of the product was 92.

[0043] B. Preparation of spheroidizing agent

[0044] It is prepared by mixing 45wt% sodium humate and 55wt% weathered coal uniformly and then carbonizing at 500℃ for 3.5h at low temperature.

[0045] C. Large-scale tamping coke oven produces carbonized coal / coke for gasification

[0046] (1) Mix 37wt% of anthracite and 45wt% of long flame coal and send it to the crusher for fine crushing. The ...

Embodiment 2

[0062] A. Preparation of coal modified binder

[0063] According to mass parts, 250 mesh Xinjiang lignite pulverized coal 38wt%, water 28wt%, formic acid 32wt%, sodium carbonate 1wt% and potassium carbonate 1wt% are mixed uniformly, and heated to 370°C in an autoclave to react for 25min to prepare. After the reaction, the reactor is cooled to room temperature, and the filtered solid product is the coal modified binder.

[0064] The caking index tester is used to measure the coal briquette binder in accordance with GB / T 5447-1997, and the caking index of the product is 90.

[0065] B. Preparation of spheroidizing agent

[0066] It is prepared by mixing 50wt% sodium humate and 50wt% weathered coal uniformly and then carbonizing at 450℃ for 4h.

[0067] C. Large-scale tamping coke oven produces carbonized coal / coke for gasification

[0068] (1) Mix 55wt% of lean coal and 25wt% of lignite and send it to the crusher for fine crushing. The mass of coal with a particle size of ≤3mm accounts fo...

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Abstract

The invention discloses a method for producing carbonized coal / coke for gasification by a large tamping briquette on a coke oven. The method comprises the steps of adding a coal modified adhesive and a spheroidizing agent into non-caking feed coal; humidifying a mixed coal material, conveying to a high-density tamping molding machine, and pressing to obtain a large briquette of which the density is 1.15-1.30g / cm<3>; then conveying the tamped large briquette into a tamping coke oven carbonization chamber, and carbonizing for 15-30 hours at 850-1100 DEG C to obtain the carbonized coal / coke for gasification. The method disclosed by the invention realizes large-scale production of the carbonized coal / coke for gasification; a product has the characteristics of high mechanical strength, good thermal stability, high gas generation rate, less pollutant emission and the like, and is a high-quality fixed bed gasification raw material.

Description

Technical field [0001] The invention relates to a production method of carbonized coal / coke for gasification, in particular to a large-scale tamped coal cake made of non-cohesive pulverized coal as the main raw material to produce carbonized coal for gasification on a coke oven / Jiao method. Background technique [0002] Lurgi and BGL fixed-bed gasification technologies have been verified by a large number of industrial applications, with high localization, low investment and reliable technology. Nearly 60% of the synthetic ammonia and methanol production capacity uses anthracite lump coal as raw materials, and the annual consumption of anthracite lump coal is nearly 80 million. Ton. However, due to the promotion of mechanized comprehensive mining technology, the lump coal production rate has dropped significantly, and the coal-chemical integration process of coal enterprises has reduced the social supply of high-quality anthracite lump coal, resulting in a tight supply of anth...

Claims

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Application Information

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IPC IPC(8): C10B53/08C10B57/06C10B57/10C10L5/10C10L5/04
Inventor 张永发赵钰琼赵立贤谢克昌周佳妮刘振民吴超张建平
Owner 太原四联重工股份有限公司
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