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Multifunctional dry powder type coal adhesive, preparation method thereof and briquette coal containing adhesive

An adhesive and multi-functional technology, applied in the field of briquette processing, can solve the problems of poor water resistance, low strength, low sulfur fixation rate, etc., and achieve the effect of good water resistance, high strength and good combustion effect

Active Publication Date: 2019-07-12
河北东慈环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the existing briquette binder has a single function and a large amount of addition, which cannot meet the production needs. The briquette products prepared by it have poor water resistance, low strength, poor combustion effect (impermeable combustion), low sulfur fixation rate, and are easy to burn. Problems such as coking and high energy consumption

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The dry powder briquette binder is prepared by the following method:

[0050] (a) Preparation of adhesive raw materials: each raw material is crushed, and adhesives, high-temperature enhancers, regulators, combustion-supporting and dust-cleaning agents, sulfur-fixing and smoke-eliminating agents and accelerators are prepared respectively according to the mass ratio;

[0051] The binder is (mass ratio) modified starch: dextrin = 7:3;

[0052] The high temperature enhancer is (mass ratio) sodium silicate: sodium phosphate = 5:5;

[0053]The regulator is (mass ratio) polyvinyl alcohol: hydroxypropyl methylcellulose: polyacrylamide = 2:2:6;

[0054] The combustion-supporting soot cleaning agent is (mass ratio) potassium permanganate: sodium chlorate: sodium nitrate=3:3:4;

[0055] The sulfur-fixing smoke suppressant is (mass ratio) magnesium oxide: calcium oxide = 5:5;

[0056] The accelerator is (mass ratio) bauxite: iron oxide = 8:2;

[0057] (b) Mixing of adhesive ra...

Embodiment 2

[0061] (1) Mix 100kg of pulverized coal and 5kg of multifunctional dry powder briquette binder evenly to obtain a mixture; wherein, the multifunctional dry powder briquette binder includes 1500g of binder, 2000g of high-temperature reinforcing agent, adjusting 500g of agent, 900g of combustion-supporting soot-cleaning agent, 50g of sulfur-fixing smoke suppressant and 50g of accelerator; each raw material is pulverized to 80 meshes;

[0062] (2) Add 8% water of pulverized coal quality to the mixture obtained through step (1), and continue to stir;

[0063] (3) The mixed material processed in step (2) is extruded by an extrusion pressure of 18 MPa to obtain wet briquettes;

[0064] (4) Naturally air-dry the wet briquette obtained in step (3) until the water content is 3% of the mass of the coal powder to obtain a briquette product.

[0065] The average wet ball compressive strength is 92N / piece; the average wet ball drop strength is 82%; the average dry ball compressive strengt...

Embodiment 3

[0067] (1) Mix 100kg of pulverized coal and 4kg of multifunctional dry powder briquette binder evenly to obtain a mixture; wherein, the multifunctional dry powder briquette binder includes 1800g of binder, 400g of high-temperature reinforcing agent, adjusting 200g of agent, 800g of combustion-supporting and soot-removing agent, 400g of sulfur-fixing smoke suppressant and 400g of accelerator; each raw material is crushed to 150 meshes;

[0068] (2) Add 6% water of pulverized coal quality to the mixture obtained through step (1), and continue stirring;

[0069] (3) The mixed material processed in step (2) is extruded by an extrusion pressure of 16 MPa to obtain wet briquettes;

[0070] (4) Naturally air-dry the wet briquettes obtained in step (3) until the water content is 3% of the mass of the pulverized coal to obtain briquettes.

[0071] The average wet ball compressive strength is 96N / piece; the average wet ball drop strength is 92%; the average dry ball compressive strengt...

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Abstract

The invention relates to a multifunctional dry powder type coal adhesive. The coal adhesive comprises, by weight, 30-80 parts of an adhesive, 5-40 parts of a high-temperature reinforcing agent, 0.5-10parts of a regulator, 1-20 parts of a combustion-supporting ash-removing agent, 1-20 parts of a sulfur-fixing smoke-eliminating agent and 1-10 parts of an accelerant. The invention also relates to apreparation method of the adhesive and briquette coal containing the adhesive. The additives are low in cost and small in addition quantity, and the prepared briquette coal has the advantages of beinghigh in compressive strength, good in water resistance, free of drying, good in combustion-supporting catalysis, high in decoking and ash removal rate and obvious in sulfur fixation effect.

Description

technical field [0001] The invention belongs to the field of briquette processing, and in particular relates to a multifunctional dry powder briquette binder, a preparation method of the binder and a briquette containing the binder. Background technique [0002] Coal binder (also known as coal binder, coal binder, composite coal binder, etc.) Blending agent for molding into blocks; powdery or liquid auxiliary raw materials for molding coal to ensure that the molding coal has a specific shape and performance after molding; it is mainly used to play an auxiliary role in the molding coal processing process. Briquette binder is a key auxiliary raw material that determines the quality of coal briquettes. [0003] At present, the existing briquette binder has a single function and a large amount of addition, which cannot meet the production needs. The briquette products prepared by it have poor water resistance, low strength, poor combustion effect (impermeable combustion), low s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/10C10L5/04
CPCC10L5/04C10L5/105C10L2290/24C10L2290/32
Inventor 李晓东李慈
Owner 河北东慈环保科技有限公司
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