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
CN103194296BActive Publication Date: 2015-03-18LANZHOU XINXING NEUTRAL CLEANING TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
LANZHOU XINXING NEUTRAL CLEANING TECH
Publication Date
2015-03-18
Patent Text Reader

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.
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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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