Safe and energy-saving environmental coal drying system

Abstract

The invention relates to the field of environmental coal drying, and concretely relates to a safe and energy-saving environmental coal drying system, which comprises a rotational direct flow diffusiontype air distributor. An outlet of an internal circulating environmental coal drying machine is connected with a dry dedusting system; the rotational direct flow diffusion type air distributor comprises an air mixing pipe; one end of the air mixing pipe is a high-temperature flue gas inlet; the other end of the air mixing pipe is a mixed flue gas outlet; a low-temperature flue gas inlet is formedclose to a tangent direction of the high-temperature flue gas inlet end; a plurality of independent drying cavities are symmetrically arranged on the left side and the right side in the internal circulating environmental coal drying machine; a penetrating passage is formed in the middle; an upper air inlet passage, a middle return airway and a lower air inlet passage are arranged in the passage from top to bottom; the middle return airway is connected with the low-temperature flue gas inlet of the rotational direct flow diffusion type air distributor; and an outlet of the dry dedusting systemis connected with an inlet of a fan A and the low-temperature flue gas inlet of the rotational direct flow diffusion type air distributor. The safe and energy-saving environmental coal drying systemprovided by the invention is safe, high-efficient, energy-saving, environmentally-friendly, and suitable for improving an existing environmental coal drying system.

Description

technical field [0001] The invention relates to the field of molding material drying, in particular to a safe, energy-saving and clean briquette drying system. Background technique [0002] Clean coal is uniformly mixed with coke powder or anthracite powder and dry powder or liquid additives. It is made into oblate briquettes by molding machine. Because the "wet ball" has low strength, it is easy to deform and break, so its moisture content needs to be controlled. Only within 3% can the requirements for transportation, storage, and combustion be met, so the drying of clean briquettes has become one of the key processes. [0003] The existing clean briquette drying system such as figure 1 As shown, it is composed of fan A1, fan B4, fan C7, hot blast stove 2, air mixer 3, dryer 5, and wet dust collection system 6. The 750~900°C high-temperature flue gas generated by hot blast stove 2 passes through natural air distribution Adjust the temperature to 90~100°C and send it to th...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the above-mentioned problems in the actual production process of the existing clean briquette drying system, and to provide a safe, energy-saving and clean briquette drying system

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