A kind of high-efficiency sulfur-fixing briquette composite binder

A binder and high-efficiency technology, applied in the field of briquette binder, can solve the problems of poor adaptability and low sulfur solidification rate of briquette binder

Active Publication Date: 2018-11-02
临泽县奋君矿业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a compound method of high-efficiency sulfur-fixing composite briquette binder for the low sulfur-fixing rate of medium-sized coal binders in the prior art and poor adaptability to coal types with different sulfur contents, so as to improve the efficiency of briquettes. Sulfur fixation rate, and taking into account the improvement of calorific value and stability of coal briquettes

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Get 51 parts of super sodium humate in parts by mass, 13 parts of limestone powder, 21 parts of slaked lime powder, 6 parts of sodium carbonate, 3 parts of potassium permanganate, 3 parts of ferrous chloride, 3 parts of sodium chloride; Mix well, get Composite binder (dry powder).

[0012] Take a pulverized coal sample with a sulfur content of 1.08%, add a composite binder with a mass of 15% of the raw coal, stir evenly, add 30% water, stir again, and press mold it. Testing the industrial performance of coal briquettes: the ash content of briquette coal is 20.2%, the volatile rate is 36.0%, the calorific value is 27.8MJ / Kg, and the fixed carbon content is 45.5%. Compared with raw coal, the ash content increases by 1.7%, and the volatile matter increases by 5.2% %. The sulfur content in the dry base ash of briquettes is 4.35%, the sulfur fixation rate is 91.59%, the cold compressive strength of briquettes is 310N / piece, the fixed carbon content is reduced by 4.5%, but t...

Embodiment 2

[0014] Get 49 parts of super sodium humate in parts by mass, 25 parts of limestone powder, 10 parts of slaked lime powder, 7 parts of sodium carbonate, 3 parts of potassium permanganate, 3 parts of ferrous chloride, 3 parts of sodium chloride, mix well, Obtain composite binder (dry powder).

[0015] Take a coal sample with a sulfur content of 1.08%, add a composite binder with a raw coal content of 15% and stir evenly, add 30% water, stir again, and press mold it. Detecting the industrial performance of briquette coal: the ash content of briquette coal is 20.5%, the volatile content is 34.0%, the calorific value is 27.5MJ / kg, and the fixed carbon content is 43.2%. Compared with raw coal, the ash content increases by 2.0%, and the volatile content increases by 3.2% %, the sulfur content in the dry base ash of briquettes is 4.41%, the sulfur fixation rate is 90.16%, the cold compressive strength of briquettes is 290N / piece, the fixed carbon content is reduced by 4.8%, but the ca...

Embodiment 3

[0017] Get 51 parts of super sodium humate in parts by mass, 13 parts of limestone powder, 21 parts of slaked lime powder, 6 parts of sodium carbonate, 3 parts of potassium permanganate, 3 parts of ferrous chloride, 3 parts of sodium chloride, mix uniformly, obtain Composite binder (dry powder).

[0018] Take a coal sample with a sulfur content of 2.12%, add a composite binder with a raw coal content of 15% and stir evenly, add about 30% of water, stir again, and press mold it. Detecting the industrial performance of briquette coal, the ash content of briquette coal is 26.7%, the volatile matter is 43.7%, the calorific value is 20.0MJ / kg, and the fixed carbon content is 41.3%. Compared with raw coal, the ash content increases by 2.8%, and the volatile matter increases by 5.5% %,, the sulfur content in the dry base ash of briquettes is 5.71%, the sulfur fixation rate is 90.77%, the cold compressive strength of briquettes is 303N / piece, the fixed carbon content is reduced by 5.7...

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Abstract

The invention provides a high-efficiency sulfur-fixation coal briquette composite adhesive which is compounded from sodium humate, limestone, slaked lime, sodium carbonate, sodium chloride, potassium permanganate and ferrous chloride. In the briquette coal adhesive, various raw materials cooperate with each other and promote each other, and thus, the coal briquette adhesive has the advantages of high bonding property, high sulfur fixation rate and favorable combustion-supporting property. As for any coal type with the sulfur content of lower than 2%, the sulfur fixation rate of 90% can be reached when the addition amount of the composite adhesive is 13-15%; and thus, the composite adhesive has wide adaptability. The strength, heat stability, heating value and other indexes of the coal briquette respectively satisfy the Standard for Coal Briquette for Civilian Use.

Description

technical field [0001] The invention relates to a molded coal binder, in particular to a high-efficiency sulfur-fixing molded coal composite binder and a preparation method thereof. Background technique [0002] Currently, flue gas desulfurization technology is the main foreign method for controlling the release of sulfur dioxide from coal-fired coal. The technology is relatively mature, but its wide application is limited due to high equipment investment and operating costs. Domestically, the method of adding sulfur-fixing agent to coal-fired coal is mainly used for sulfur fixation, but it is mainly limited to low-sulfur coal, and the sulfur fixation rate is not very high. Briquette sulfur-fixing agent is mainly calcium-based sulfur-fixing agent, such as limestone or calcium oxide and other single substances, the sulfur-fixing efficiency is low, only about 50%, and when the temperature reaches 1250°C, the calcium sulfate produced will decompose, causing sulfur dioxide to re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L5/10C10L9/12
CPCC10L5/105C10L9/12
Inventor 査飞赵天银
Owner 临泽县奋君矿业有限公司
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