Hot-blast stove for drying phosphate and compound fertilizers

Abstract

The invention discloses a hot-blast stove for drying phosphate and compound fertilizers. The hot-blast stove comprises a hot-blast stove body and a burner, wherein the hot-blast stove body comprises an outer cylinder body and an inner cylinder, and an attenuation air inlet and a thermocouple installation port are arranged above the front section of the hot-blast stove body; a flame retardant layer and an insulation layer are arranged in the inner cylinder body of the hot-blast stove; a flame retardant layer is arranged at the rear section of the outer cylinder body; the burner comprises an ignition air gun, a methyl alcohol gun, a dimethyl ether air gun and a casing assembly. The ignition air gun comprises an anti-explosion ignition gun and an anti-explosion pneumatic booster; the methyl alcohol gun is provided with a methyl alcohol inlet and a compressed air inlet; a guide pipe assembly of the dimethyl ether air gun is provided with a dimethyl ether primary gas inlet, and the top of the casing assembly is provided with a burning air inlet. By means of the hot-blast stove, compared with the original coal hot air stove, the procedure of air heat exchange is eliminated, heat exchange loss is reduced, and burning efficiency is high. The hot-blast stove for drying the phosphate and compound fertilizers is simple in operation, labor intensity of workers is low, no dust and waste residue is generated on site, and the environment on site is good.

Description

technical field [0001] The invention relates to phosphate fertilizers, in particular to a hot blast stove for drying phosphate compound fertilizers by using dimethyl ether and methanol as fuels in the production process of phosphate compound fertilizers. Background technique [0002] In the existing phosphate compound fertilizer production technology, traditional energy sources such as burning raw coal or gas are mainly used to dry the product. The cost of using traditional energy is high, the heat exchange tubes are frequently damaged, and air leaks into the flue gas side, resulting in positive pressure combustion in the furnace, leaving a safety hazard for the operation. Frequent damage to heat exchange tubes affects the long-term operation of production. The production site of the hot blast stove is seriously dusty, which affects civilized production. And the labor intensity of the employees is high. [0003] As new energy sources, DME and methanol have the following c...

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Problems solved by technology

[0012] The purpose of the present invention is to make up for the deficiencies of the prior art, and to provide a hot blast stove for drying phosphorus and compound fertilizers. The hot blast stove uses dimethyl ether and methanol as fuels, which solves the problem of using traditional energy sources such as burning raw coal or gas in the prior art. coming question

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