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Method for producing clean formed coke based on lignin transition state binder

A technology of lignin and transition state, used in coke ovens, petroleum industry, solid fuels, etc., can solve the problem of high crushing rate of coke, and achieve the effect of efficient utilization and improvement of utilization value.

Pending Publication Date: 2020-12-01
TAIYUAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Based on the above-mentioned prior art, the specific technical problem to be solved by the present invention is that the failure of the cold-state binder and the failure of the hot-state binder between 200-400°C during the retort process lead to a high coke breakage rate during the retort process problems, and provide a method for producing clean coke based on lignin transition state binder

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Implement the technical scheme of the method for producing clean type coke based on the lignin transition state binder provided by the above-mentioned present invention. In specific implementation, the following steps should be carried out:

[0023] (1) Select the raw material composition and quality index of lignin transition state binder as lignin: purity 90wt%, bauxite Al 2 o 3 73wt%, silica SiO 2 96wt%, pregelatinized starch: viscosity 1000mPa.s, slaked lime: CaO+MgO60wt% and coal liquefaction residue: residual oil + asphaltene 80wt%;

[0024] (2) The bauxite, silica and coal liquefaction residue, which are the raw materials of the lignin transition state binder, are respectively crushed to a particle size of ≤3mm, and the lignin, slaked lime and pregelatinized starch are used for later use;

[0025] (3) Weigh 10 kg of crushed bauxite, 20 kg of silica and 50 kg of coal liquefaction residue in parts by weight, and weigh 20 kg of lignin, 20 kg of slaked lime and 10 ...

Embodiment 2

[0035] Implement the technical scheme of a kind of method based on lignin transition state binder clean type coke provided above of the present invention, in concrete implementation, should carry out according to the following steps:

[0036] (1) Select the raw material composition and quality index of lignin transition state binder as lignin: purity 82wt%, bauxite Al 2 o 3 69wt%, silica SiO 2 96.6wt%, pregelatinized starch: viscosity 900mPa.s, slaked lime: CaO+MgO62.5wt%, and coal liquefaction residue: residual oil+asphaltene 75wt%;

[0037](2) The bauxite, silica and coal liquefaction residue, which are the raw materials of the lignin transition state binder, are respectively crushed to a particle size of ≤3mm, and the lignin, slaked lime and pregelatinized starch are used for later use;

[0038] (3) Weigh 9kg of crushed bauxite, 16kg of silica and 52.5kg of coal liquefaction residue by weight, and weigh 22.5kg of lignin, 17.5kg of slaked lime and 12.5kg of pregelatinized ...

Embodiment 3

[0048] Implement the technical scheme of a kind of method based on lignin transition state binder clean type coke provided above of the present invention, in concrete implementation, should carry out according to the following steps:

[0049] (1) Select the raw material composition and quality index of lignin transition state binder as lignin: purity 73wt%, bauxite Al 2 o 3 64wt%, silica SiO 2 97.2wt%, pregelatinized starch: viscosity 800mPa.s, slaked lime: CaO+MgO65wt%, and coal liquefaction residue: residual oil+asphaltene 70wt%;

[0050] (2) The bauxite, silica and coal liquefaction residue, which are the raw materials of the lignin transition state binder, are respectively crushed to a particle size of ≤3mm, and the lignin, slaked lime and pregelatinized starch are used for later use;

[0051] (3) Weigh 8 kg of crushed bauxite, 12 kg of silica, and 55 kg of coal liquefaction residue in parts by weight, and weigh 25 kg of lignin, 15 kg of slaked lime, and 15 kg of pregela...

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Abstract

The invention relates to a method for producing clean formed coke based on a lignin transition state binder. The method comprises the following steps: selecting bauxite, silica and coal liquefaction residues, respectively crushing, adding lignin, slaked lime and pre-gelatinized starch, uniformly stirring and mixing, and carrying out dry grinding to obtain the lignin transition state binder; selecting blended coal, uniformly mixing the blended coal with the lignin transition state binder according to a ratio, carrying out cold press molding, carrying out dry distillation in a vertical dry distillation furnace, discharging the red hot furnace burden, and cooling to room temperature through a coke quenching process to obtain the clean formed coke. The raw materials are wide and rich in sourceand low in price, have the effects of a cold-hot state binder, and play a role in binding before the cold state binder fails and a hot state binder acts in the pyrolysis process so that the forming rate and the formed coke strength of the materials in the dry distillation furnace are guaranteed.

Description

technical field [0001] The invention relates to a method for preparing clean coke, in particular to a method for producing clean coke based on a lignin transition state binder. Background technique [0002] my country's special primary energy endowment, which is rich in coal, poor in oil and little in gas, determines that coal combustion is the main way for my country to obtain energy at present and for a long time in the future. It has caused serious harm, leading to serious air pollution in our country and frequent occurrence of smog. According to statistics, in 2014, the amount of coal used for civil scattered combustion in my country was 160 million tons, accounting for only 3.8% of the country's coal consumption. Taking sulfur dioxide emissions as an example The annual emission of my country's power plants is 2 million tons, and that of civil scattered combustion is as high as 3.2 million tons, which is 1.6 times the total emissions of power plants. The damage to the ecol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L5/14C10L5/10C10B57/06
CPCC10B57/06C10L5/105C10L5/143
Inventor 刘守军马渊史鹏政闫旭东张智聪杨颂杜文广
Owner TAIYUAN UNIV OF TECH
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