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A kind of pulverized coal forming dry distillation method with tar residue as base binder

A technology of tar residue and adhesive, applied in the field of coal chemical industry, can solve the problems of reducing the potential value of coal tar and low recovery rate of coal tar, and achieve the effects of alleviating the shortage of coal resources, good bonding performance and high oil yield

Active Publication Date: 2018-09-28
YULIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a kind of solid waste, tar residue is mixed with particles such as pulverized coal and semi-coke powder, which leads to a low recovery rate of coal tar and greatly reduces the potential value of coal tar

Method used

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  • A kind of pulverized coal forming dry distillation method with tar residue as base binder
  • A kind of pulverized coal forming dry distillation method with tar residue as base binder
  • A kind of pulverized coal forming dry distillation method with tar residue as base binder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take 5kg of tar residue, 2kg of magnesium chloride, 3kg of cornmeal, 60kg of pulverized coal with a particle size of 1mm or less, 25kg of pulverized coal with a particle size of 1-3mm, and 5kg of water. After drying for 28 hours, dry distillation at 750°C for 2 hours to obtain semi-coke, coal tar and gas. Table 3 shows the performance analysis of briquettes and the briquettes obtained after dry distillation of briquettes, coal tar and gas.

[0029] The briquette that table 3 embodiment 1 obtains and briquette charcoal, coal tar, gas performance analysis result obtained after dry distillation of briquette

[0030]

[0031] In the table: Q gr,d High calorific value on a dry basis.

[0032] As can be seen from Table 3, the blue coke strength, the oil yield of coal tar, and the gas calorific value are greatly improved after the dry distillation of Example 1, and the obtained air-dry base ash content and air-dry base volatile matter are within a certain range, avoiding ...

Embodiment 2

[0034] Get 10kg of tar residue, 3kg of magnesium carbonate, 5kg of cornmeal, 65kg of pulverized coal with a particle size of 1mm or less, 15kg of pulverized coal with a particle size of 1mm to 3mm, and 2kg of water. After natural drying for 24 hours, dry distillation at 550°C for 4 hours. Table 3 shows the performance analysis of briquettes and the briquettes obtained after dry distillation of briquettes, coal tar and gas.

[0035] The briquette that table 4 embodiment 2 obtains and briquette charcoal, coal tar, gas property analysis result that obtain after dry distillation of briquette

[0036]

[0037] In the table: Q gr,d High calorific value on a dry basis.

[0038] As can be seen from Table 4, the blue coke strength, the oil yield of coal tar, and the gas calorific value are greatly improved after the dry distillation of Example 2, and the obtained air-dry base ash content and air-dry base volatile matter are within a certain range, avoiding It eliminates the pollu...

Embodiment 3

[0040] Get 8kg of tar residue, 5kg of magnesium sulfate, 2kg of cornmeal, 55kg of pulverized coal with a particle size of 1mm or less, 25kg of pulverized coal with a particle size of 1mm to 3mm, and 5kg of water, stir and mix evenly, and pressurize at 8MPa to obtain briquettes. After natural drying for 36 hours, dry distillation at 650°C for 4 hours. Table 4 shows the performance analysis of the briquettes and the briquettes, coal tar, and gas obtained after dry distillation of the briquettes.

[0041] The briquette that table 5 embodiment 3 obtains and briquette charcoal, coal tar, gas property analysis result that obtain after carbonization of briquette

[0042]

[0043] In the table: Q gr,d High calorific value on a dry basis.

[0044] As can be seen from Table 5, the blue coke strength, the oil yield of coal tar, and the gas calorific value are greatly improved after dry distillation in Example 1, and the obtained air-dry base ash content and air-dry base volatile mat...

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Abstract

The invention provides a powdered-coal molding and dry-distillation method adopting tar residue as a basic adhesive. The powdered-coal molding and dry-distillation method comprises the following steps of: 1) taking the tar residue, inorganic magnesium salt, corn meal, powdered coal and water, and stirring and mixing uniformly so as to obtain a mixture; 2) pressurizing and molding the mixture under the pressure of 8-20MPa to obtain briquette coal, and naturally drying; and 3) carrying out dry distillation on the briquette coal at the temperature of 550-750 DEG C to obtain molded semi-coke, coal tar and coal gas, and cooling the coal tar to generate the tar residue which can be recycled by the step 1). The powdered-coal molding and dry-distillation method provided by the invention adopts the tar residue, inorganic magnesium salt, corn meal and water as materials which are low in cost and easy to obtain, has the advantages of good adhering property, strong stability, wide source and the like, and is suitable for promotion and development of the briquette coal technology.

Description

technical field [0001] The invention relates to the technical field of coal chemical industry, and specifically discloses a pulverized coal forming dry distillation method with tar residue as the base binder. Background technique [0002] Semi-coke (semi-coke) is a kind of high-fixed carbon combustible solid material obtained from Jurassic non-sticky and weakly sticky lump coal with a thickness of 30-80 mm, which is obtained by pyrolysis at medium and low temperatures. It has "three highs and four lows" It is a new generation of clean and environmentally friendly fuel. Coal tar and coke oven gas are produced as by-products during semicoke production. However, as the birthplace and main production area of ​​the national semi-coke industry, after years of development, the semi-coke industry has become the largest coal chemical industry and an important local economic pillar in Yulin City, but with the continuous improvement of mechanization, coal mining The method has change...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10B57/06C10B53/08
CPCC10B53/08C10B57/045C10B57/06
Inventor 闫龙王玉飞李健王超
Owner YULIN UNIV
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