Desulfurization assistant

Abstract

The invention discloses a desulfurization assistant which is prepared from the following raw materials in parts by weight: 10-20 parts of iron oxide, 10-20 parts of barium nitrate, 10-20 parts of phosphorus pentoxide, 5-10 parts of potassium persulfate, 5-10 parts of sodium hexametaphosphate, 5-8 parts of sodium diacetate, 2-5 parts of potassium oxalate, 5-10 parts of sodium hypophosphite, 5-10 parts of sodium tripolyphosphate, 5-10 parts of methyl acetate, 2-5 parts of butyric acid, 5-10 parts of croscarmellose sodium, 3-5 parts of methylcellulose, 1-5 parts of Tween 80 and 200-250 parts of water. According to the desulfurization assistant disclosed by the invention, sulfide layer and salt layer which are attached to coal are stripped off, infiltrated and dispersed by the acidity and excellent complexing capacity of the carried active group; and a sulphur element is complexed in a cleaning agent to reach the targets of coal washing and desulfurization. The desulfurization assistant is good in desulfurization effect and the environment is not polluted.

Description

technical field [0001] The invention relates to the technical field of additives, in particular to a desulfurization additive. 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, thioaldehyde and thiophene in heterocyclic state, etc.: organic sulfur mainly comes from proteins in coal-forming plants and microbial proteins: proteins contain The sulfur content is 0.3% to 2.4%, and most coals with a total sulfur content of less than 0.5% are dominated by organic sulfur. Inorganic sulfur in coal mainly comes from various sulfur-containing compounds in minerals and a small amount of sulfate: the difficulty of removing sulfur from sulfide is related to the particle size and distribution of sulfide. Those that are small and evenly distributed in coal are difficult to remove; organic sulfur is integrate...

AI Technical Summary

Problems solved by technology

[0004] At present, any desulfurization agent and desulfurization equipment on the market cannot allow high-sulfur coal to meet the emission standards of sulfur oxides during normal use. The one-time investment of desulfurization equipment is large, and the desulfurization operation cost is high.

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 hydrophobic substances. Degradation treatment, high treatment cost