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Coal washing and desulfurizing agent composition and preparation method thereof

A desulfurizer and composition technology, which is applied in fuel additives, petroleum industry, fuels, etc., can solve the problems of large one-time investment in desulfurization equipment, poor coal washing desulfurization effect, and difficulty in degrading sulfur substances, so as to promote the formation rate and improve the complexation. combined efficiency and improved desulfurization activity

Active Publication Date: 2015-03-18
LANZHOU XINXING NEUTRAL CLEANING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Any desulfurizer and desulfurization equipment currently on the market cannot allow high-sulfur coal to make SO 2 Standard discharge, large one-time investment in desulfurization equipment, high desulfurization operating costs
At present, the coal washing desulfurization agent composition is sodium hypochlorite, methanol, hydrogen peroxide, N-methyldiethanolamine and N,N-dimethylethanolamine, etc., but the desulfurization effect of coal washing is poor, and the sewage treatment of coal washing water is difficult for the contained sulfur substances. Degradation treatment, high treatment cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1 At first, take raw material by following component and weight: 22kg sodium hypochlorite, 14kg ammonium persulfate, 11kg sodium glycolate, 9kg sodium acetate, 9kg potassium citrate, 7kg sodium gluconate, 7kg ethylenediaminetetraacetic acid, 8kg potassium permanganate, 28kg methanol, 26kg triethanolamine, 13kg sodium dichromate, 4kg polyaluminum ferric chloride, 1kg urea, 1kg polyacrylamide, 0.6kg sodium dodecylbenzenesulfonate, 0.3kg dispersant JFC with 110kg of water.

[0040] Then, the above-mentioned raw materials are prepared into a coal washing desulfurizer composition according to the following steps:

[0041] 1. Under stirring, add methanol and triethanolamine into the mixing tank, then add water, and stir for 15 minutes to obtain the first solution.

[0042] 2. Under stirring, add sodium glycolate, sodium hypochlorite, potassium citrate, potassium permanganate and sodium dichromate to the first solution in sequence, and stir for 30 minutes to obtain...

Embodiment 2

[0045] Embodiment 2 Weigh raw materials according to the following components and weight: 25kg sodium hypochlorite, 13kg ammonium persulfate, 8kg sodium glycolate, 6kg sodium acetate, 10kg potassium citrate, 5kg sodium gluconate, 5kg ethylenediaminetetraacetic acid, 11kg high Potassium manganate, 25kg methanol, 22kg triethanolamine, 15kg sodium dichromate, 3kg polyaluminum ferric chloride, 2kg urea, 1kg polyacrylamide, 0.5kg sodium dodecylbenzenesulfonate, 0.2kg dispersant JFC and 120kg water.

[0046] The method for preparing the coal washing desulfurizer composition from the above raw materials is the same as in Example 1.

Embodiment 3

[0047] Embodiment 3 Weigh raw materials according to the following components and weight: 20kg sodium hypochlorite, 12kg ammonium persulfate, 12kg sodium glycolate, 8kg sodium acetate, 12kg potassium citrate, 9kg sodium gluconate, 9kg ethylenediaminetetraacetic acid, 7kg high Potassium manganate, 32kg methanol, 28kg triethanolamine, 16kg sodium dichromate, 5kg polyaluminum ferric chloride, 1.5kg urea, 2kg polyacrylamide, 0.8kg sodium dodecylbenzenesulfonate, 0.4kg dispersant JFC and 100kg of water.

[0048] The method for preparing the coal washing desulfurizer composition from the above raw materials is the same as in Example 1.

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Abstract

The invention relates to an adjuvant for coal washing and desulfurizing. The adjuvant is prepared from the following raw materials in parts by weight: 20-25 parts of sodium hypochlorite NaClO, 12-15 parts of ammonium persulfate (NH4)S2O8, 8-12 parts of sodium glycollate HOCH2COONa, 6-10 parts of sodium acetate CH3COONa, 7-12 parts of potassium citrate K3C6H5O7H2O, 5-9 parts of sodium gluconate, 5-9 parts of edetic acid, 7-12 parts of potassium permanganate KMnO4, 25-32 parts of methanol CH3OH, 22-30 parts of triethanolamine (HOCH2CH2)3N, 12-16 parts of sodium dichromate Na2Cr2O7, 3-5 parts of polyaluminum ferric chloride PAFC,1-2 parts of urea CON2H4, 1-2 parts of polyacrylamide PAM, 0.5-0.8 part of sodium dodecyl benzene sulfonate C18H29NaO3S, 0.2-0.4 part of dispersing agent JFC and 100-120 parts of water. The adjuvant disclosed by the invention is simple to use, stable in performance and free of large investment and transformation equipment; the removal rate of inorganic sulfur and organic sulfur is more than 70 percent; and the removal rate of nitric oxides is more than 70 percent.

Description

technical field [0001] The invention relates to an auxiliary agent for washing and desulfurizing coal used in coal washing plants before combustion, specifically a coal washing desulfurization agent composition, and also relates to a preparation method of the coal washing desulfurization agent composition. Background technique [0002] Sulfur in coal usually exists in the state of organic sulfur and inorganic sulfur. The composition and structure of organic sulfur is very complex, and the main forms are mercaptan, thioether, disulfide, and thioquinone and thiophene in heterocyclic state; organic sulfur mainly comes from the protein of coal-forming plants and microbial protein; the protein contains The sulfur content is 0.3% to 2.4%, and most coals with a total sulfur content generally less than 0.5% are generally dominated by organic sulfur. Inorganic sulfur in coal mainly comes from various sulfur-containing compounds and a small amount of sulfate in minerals. The difficu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L10/18
Inventor 赵丽萍
Owner LANZHOU XINXING NEUTRAL CLEANING TECH
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