Composite biomass briquette adhesive, and preparation method and application thereof

A biomass and composite technology, used in waste fuel, petroleum industry, solid fuel, etc., can solve the problems of low high temperature thermal strength, low coal cooling strength, poor thermal stability, etc., to achieve high tar yield and improve cold strength. , the effect of improving thermal stability

Active Publication Date: 2015-09-02
SHAANXI COAL & CHEM TECH INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Inorganic binders generally have a wide range of sources, low prices, and good thermal stability, but poor cohesiveness and increased ash content; most organic binders have good cohesiveness and have a certain calorific value, but poor thermal stability and high price; choose A composite binder formed by mixing a suitable inorganic binder and an organic binder can combine the advantages of the two to produce ...

Method used

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  • Composite biomass briquette adhesive, and preparation method and application thereof
  • Composite biomass briquette adhesive, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The composite biomass briquette binder of this embodiment is made of the following raw materials in parts by weight: 1 part of sunflower stalks, 15 parts of sodium hydroxide solution, 0.35 parts of bentonite, and 1.5 parts of emulsified asphalt; the mass of the sodium hydroxide solution The concentration is 1%, and the sunflower stalks are dried and pulverized sunflower stalks.

[0030] The preparation method of the compound type biomass briquette binder of the present embodiment comprises the following steps:

[0031] Step 1, drying and pulverizing the sunflower stalks, mixing the sodium hydroxide solution with the pulverized sunflower stalks, hydrolyzing the pulverized sunflower stalks under stirring conditions, and obtaining modified sunflower stalks after filtering; the modified sunflower stalks The mass content of water in the straw is 75%; the temperature of the hydrolysis treatment is 90° C., the time is 3 hours, and the average particle diameter of the pulverize...

Embodiment 2

[0037] The composite biomass briquette binder of this embodiment is made of the following raw materials in parts by weight: 1 part of sunflower straw, 20 parts of sodium hydroxide solution, 0.3 part of bentonite, and 1 part of emulsified asphalt; the mass of the sodium hydroxide solution The concentration is 1.5%, and the sunflower stalks are dried and pulverized sunflower stalks.

[0038] The preparation method of the compound type biomass briquette binder of the present embodiment comprises the following steps:

[0039] Step 1, drying and pulverizing the sunflower stalks, mixing the sodium hydroxide solution with the pulverized sunflower stalks, hydrolyzing the pulverized sunflower stalks under stirring conditions, and obtaining modified sunflower stalks after filtering; the modified sunflower stalks The mass content of water in the straw is 80%; the temperature of the hydrolysis treatment is 95°C, the time is 1.5h, and the average particle size of the pulverized sunflower s...

Embodiment 3

[0045] The composite biomass briquette binder of this embodiment is made of the following raw materials in parts by weight: 1 part of sunflower straw, 10 parts of sodium hydroxide solution, 0.4 part of bentonite, and 2 parts of emulsified asphalt; the mass of the sodium hydroxide solution The concentration is 2%, and the sunflower stalks are dried and pulverized sunflower stalks.

[0046] The preparation method of the compound type biomass briquette binder of the present embodiment comprises the following steps:

[0047] Step 1, drying and pulverizing the sunflower stalks, mixing the sodium hydroxide solution with the pulverized sunflower stalks, hydrolyzing the pulverized sunflower stalks under stirring conditions, and obtaining modified sunflower stalks after filtering; the modified sunflower stalks The mass content of water in the straw is 65%; the temperature of the hydrolysis treatment is 80° C., the time is 4 hours, and the average particle diameter of the pulverized sun...

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Abstract

The invention discloses a composite biomass briquette adhesive which is prepared from the following raw materials in parts by weight: 1 part of sunflower straw, 10-20 parts of sodium hydroxide solution, 0.3-0.4 part of bentonite and 1-2 parts of emulsified asphalt; or 1 part of sunflower straw, 10-20 parts of sodium hydroxide solution, 0.3-0.4 part of bentonite, 0.3-0.4 part of sodium humate and 0.6-2.2 parts of modified starch. Besides, the invention also discloses a preparation method of the composite biomass briquette adhesive and application of the composite biomass briquette adhesive in preparing briquettes for pyrolysis. By using the sunflower straw as the main raw material, the prepared composite biomass briquette adhesive can enable the briquette to have favorable cold/hot strength and obviously enhance the tar yield during briquette pyrolysis when being used for preparing the briquette for pyrolysis. The preparation method has the advantages of simple technique and environment friendliness.

Description

technical field [0001] The invention belongs to the technical field of pulverized coal molding, and in particular relates to a composite biomass molding coal binder and a preparation method and application thereof. Background technique [0002] Coal classification and quality separation utilization technology refers to a clean coal utilization technology that pyrolyzes coal through medium and low temperature dry distillation, removes volatiles, including gas and coal tar, and reuses the remaining semi-coke. At present, the main processes used in the coal pyrolysis industry are: internal combustion and internal heating continuous vertical square furnace pyrolysis technology with high thermal efficiency and pulverized coal solid heat carrier pyrolysis technology. The former production method has mature technology, high tar yield and good quality, and uses 30mm-80mm lump coal as raw material, but affected by the coal mining mechanism, the lump coal that meets the demand only ac...

Claims

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Application Information

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IPC IPC(8): C10L5/14C10L5/16C10B57/06
CPCY02E50/30
Inventor 周安宁李克伦魏建国杨阳贺新福
Owner SHAANXI COAL & CHEM TECH INST
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