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Method for improving reactivity of gasified coke using alkaline compound additive

A compound additive and reactive technology, applied in coke ovens, manufacturing combustible gas, special forms of dry distillation, etc., can solve the problem of limited range of reactivity improvement.

Active Publication Date: 2019-09-17
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are few public documents on improving the reactivity of gasification coke. For example, the publication number is CN107083265A, which is a method for producing high-strength and high-reactivity gasification coke by adding long-flame coal in a high proportion. The maximum amount of flame coal added and the fineness of coal fed into the furnace are controlled for tamping and coking to prepare high-strength and high-reactivity gasified coke, but the reaction of gasified coke is only improved by adding more low-rank coal to coal blending Responsibility has certain limitations and the range of reactivity improvement is limited
[0005] Alkaline composite additives used to improve the reactivity of gasification coke have not been reported after searching

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Implement the method for improving the reactivity of gasified coke by implementing the above-mentioned basic composite additive provided by the present invention, and the specific implementation steps are as follows:

[0022] (1) The composition and quality index of selected raw materials are: sodium carbonate Na 2 CO 3 98wt%; potassium carbonate K 2 CO 3 99wt%; Limestone CaO56wt%;

[0023] ⑵Dry the selected raw materials sodium carbonate, potassium carbonate and limestone, and then crush them to a particle size of ≤3mm;

[0024] (3) Take by weight successively broken sodium carbonate 40kg respectively, potassium carbonate 30kg, limestone 30kg, mix it together and stir 30 minutes, mix homogeneously;

[0025] (4) After dry-grinding the uniformly stirred mixture, the particle size of the raw material is ≤150 mesh (0.1mm); then calcined at 300°C for 1 hour, and cooled to room temperature, which is the basic composite additive;

[0026] ⑸The furnace coal is blended wit...

Embodiment 2

[0034] Implement the method for improving the reactivity of gasified coke by implementing the above-mentioned basic composite additive provided by the present invention, the specific implementation is as follows:

[0035] (1) The composition and quality index of selected raw materials are: sodium carbonate Na 2 CO 3 98.3wt%; potassium carbonate K 2 CO 3 98.2wt%; Limestone CaO54wt%;

[0036] ⑵Dry the selected raw materials sodium carbonate, potassium carbonate and limestone, and then crush them to a particle size of ≤3mm;

[0037] (3) take by weight respectively broken sodium carbonate 35kg, 22kg of salt of wormwood, limestone 35kg respectively by weight, mix it together and stir 35 minutes, mix homogeneously;

[0038] (4) After dry-grinding the uniformly stirred mixture, the particle size of the raw material is ≤150 mesh (0.1mm); then calcined at 280°C for 1.5 hours, and cooled to room temperature, which is the basic composite additive;

[0039] ⑸The coal into the furnace...

Embodiment 3

[0047] Implement the method for improving the reactivity of gasified coke by implementing the above-mentioned basic composite additive provided by the present invention, the specific implementation is as follows:

[0048] (1) The composition and quality index of selected raw materials are: sodium carbonate Na 2 CO 3 98.6wt%; potassium carbonate K 2 CO 3 97.4wt%; Limestone CaO53wt%;

[0049] ⑵Dry the selected raw materials sodium carbonate, potassium carbonate and limestone, and then crush them to a particle size of ≤3mm;

[0050] (3) Take by weight successively broken sodium carbonate 30kg respectively, 25kg of potassium carbonate, limestone 40kg, mix it together and stir 40 minutes, mix homogeneously;

[0051] (4) Dry-grind the uniformly stirred mixture to make the particle size of the raw material ≤ 150 mesh (0.1mm); then calcinate at 260°C for 2 hours, and cool to room temperature, which is the basic composite additive;

[0052] ⑸The furnace coal is blended with 30wt% Sh...

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Abstract

The invention discloses a method for improving reactivity of gasified coke using an alkaline compound additive. The method comprises the following steps: selecting the raw materials: sodium carbonate, potassium carbonate and limestone; drying and breaking the raw materials; stirring and mixing the raw materials uniformly; performing dry grinding and calcination; cooling to normal temperature to obtain the alkaline compound additive; selecting matching coal, and proportionally adding the alkaline compound additive into the matching coal; heating in a dry distillation furnace while isolating air; discharging the furnace burden and implementing a coke quenching process to normal temperature, to obtain reactive gasified coke containing the alkaline compound additive. According to the method disclosed by the invention, the gasified coke is obtained by directly adding the alkaline compound additive into the matching coal and through high-temperature dry distillation, thus the specific surface area and reactivity of the gasified coke are improved.

Description

technical field [0001] The invention relates to a method for improving the reactivity of gasification coke, in particular to an alkaline compound additive for improving the reactivity of gasification coke, a preparation method and application thereof. Background technique [0002] As a gasification raw material specially used for the production of coal gas, gasification coke is mainly used in pressurized or normal pressure fixed bed gasification raw materials because of its certain lumpiness and high hardness, and the production of CO and H 2 Compared with metallurgical coke, the index of synthetic gas as the main component requires higher reactivity to improve gasification efficiency, and has a certain thermal intensity and lumpiness to ensure gas permeability and prevent furnace collapse. Coke gasification gas production has the following three advantages: First, the coke gasification process does not produce high-concentration phenol-cyanide wastewater, and can also treat...

Claims

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Application Information

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IPC IPC(8): C10B53/00C10B57/12C10J3/20C10J3/72
CPCC10B53/00C10B57/12C10J3/20C10J3/72
Inventor 阎志中刘守军杨颂史鹏政张智聪杜文广
Owner TAIYUAN UNIV OF TECH