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Method for restraining coal pile spontaneous ignition, special inhibitor of method and preparation method of inhibitor

A technology of inhibitors and coal piles, applied in the direction of fuel, solid fuel, petroleum industry, etc., can solve the problems of increasing the management workload of coal yards, low efficiency, and the inability to effectively avoid spontaneous combustion, so as to achieve economic investment and use Convenience, controllable effect of dosing and mixing layer

Active Publication Date: 2012-10-24
广州普凯热伏微能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These comprehensive control measures are not efficient in preventing spontaneous combustion of coal, cannot effectively avoid spontaneous combustion, and greatly increase the workload of coal yard management

Method used

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  • Method for restraining coal pile spontaneous ignition, special inhibitor of method and preparation method of inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Under normal temperature and pressure, the free oxygen control agent, stabilizer, adsorbent and auxiliary agent are mixed uniformly according to the following mass parts to make a coal storage yard coal pile spontaneous combustion inhibitor; wherein the mass part of the free oxygen control agent is 50 parts , the mass parts of the stabilizer are 40 parts, the mass parts of the adsorbent are 5 parts, and the mass parts of the auxiliary agent are 10 parts;

[0038] The free oxygen control agent is any one of iron filings, sodium bisulfite, dimethyl ketone oxime, zinc powder and sodium D ascorbate;

[0039] Stabilizer is any one in citrate, tartaric acid and salicylic acid;

[0040]The adsorbent is magnesium chloride or choline bitartrate;

[0041] The auxiliary agent is any one of sodium bicarbonate, potassium bicarbonate, sodium carbonate, potassium carbonate, sodium chloride and potassium chloride.

Embodiment 2

[0043] Under normal temperature and pressure, the free oxygen control agent, stabilizer, adsorbent and auxiliary agent are mixed uniformly according to the following mass parts to make a coal storage yard coal pile spontaneous combustion inhibitor; wherein the mass part of the free oxygen control agent is 150 parts , the mass parts of the stabilizer are 50 parts, the mass parts of the adsorbent are 9 parts, and the mass parts of the auxiliary agent are 18 parts;

[0044] Any two of the free oxygen control agent iron filings, sodium bisulfite, dimethyl ketone oxime, zinc powder and sodium D ascorbate, any two substances are matched in any proportion;

[0045] Any two in the stabilizer citrate, tartaric acid and salicylic acid, match in any ratio between any two substances;

[0046] Described adsorbent refers to magnesium chloride or choline bitartrate;

[0047] The auxiliary agent refers to any two of sodium bicarbonate, potassium bicarbonate, sodium carbonate, potassium carbo...

Embodiment 3

[0049] Under normal temperature and pressure, the free oxygen control agent, stabilizer, adsorbent and auxiliary agent are uniformly mixed according to the following mass parts to make a coal storage yard coal pile spontaneous combustion inhibitor; wherein the mass part of the free oxygen control agent is 100 parts 30 parts by mass of the stabilizer, 10 parts by mass of the adsorbent, and 20 parts by mass of the auxiliary agent;

[0050] The free oxygen control agent is any three of iron filings, sodium bisulfite, dimethyl ketoxime, zinc powder and sodium D ascorbate, and any three substances are matched in any proportion;

[0051] The stabilizer is citrate, tartaric acid and salicylic acid, and the three substances are matched in any ratio;

[0052] The adsorbent is magnesium chloride or choline bitartrate;

[0053] The auxiliary agent is any three of sodium bicarbonate, potassium bicarbonate, sodium carbonate, potassium carbonate, sodium chloride and potassium chloride, and...

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Abstract

The invention discloses a method for restraining coal pile spontaneous ignition in a coal storage field, a special inhibitor of the method and a preparation method of the inhibitor. The method for restraining the coal pile spontaneous ignition comprises that a free oxygen control agent is mixed uniformly is an oxidation layer of a coal pile so as to restrain oxidation and spontaneous ignition of the coal pile. A free oxygen control agent, a stabilizing agent, an absorbing agent and an auxiliary agent are mixed uniformly to form the inhibitor; the inhibitor comprises 50 to 150 parts of the free oxygen control agent, 20 to 50 parts of the stabilizing agent, 5 to 10 parts of the absorbing agent and 10 to 20 parts of the auxiliary agent; and the free oxygen control agent comprises more than one of scrap iron, sodium hydrogensulfite, di methyl ketoxime, zinc powder and D-sodium ascorbate; the stabilizing agent comprises more than one of citric acid, tartaric acid and salicylic acid, and the auxiliary agent comprises more than one of sodium hydrogen carbonate, potassium bicarbonate, sodium carbonate, potassium carbonate, sodium chloride and potassium chloride. According to the restraining method and the inhibitor, the operation is simple and the effect is obvious.

Description

technical field [0001] The invention relates to a method for inhibiting spontaneous combustion of coal piles, a special inhibitor and a preparation method thereof, in particular to a method for inhibiting spontaneous combustion of coal piles in a coal storage yard, a special inhibitor and a preparation method for the inhibitor. Background technique [0002] Coal-fired power generation is still one of the main methods of power production in my country. With the vigorous promotion of energy conservation and consumption reduction, the single-unit and total installed capacity of each power plant has continued to expand, and the total coal consumption and coal storage have continued to rise. [0003] With the rise of coal storage, the problem of spontaneous combustion of coal piles has attracted increasing attention. Oxidation of coal by oxygen in the air is the root cause of coal spontaneous combustion: carbon, hydrogen and other elements in coal will react at room temperature t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L9/10
Inventor 贺光辉方双浩郭德华
Owner 广州普凯热伏微能源科技有限公司
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