Pyrotechnic composition drying system

Abstract

The invention discloses a pyrotechnic composition drying system. The pyrotechnic composition drying system comprises an air source heat pump and a drying room, wherein an auxiliary evaporator is further arranged between a throttling device of the air source heat pump and a main evaporator; a heat exchanger is arranged between a fresh air supplementing channel and a dehumidification channel; humid and hot air in the dehumidification channel sequentially passes through the heat exchanger and the auxiliary evaporator and then enters a main evaporator chamber; an air inlet of the drying room is formed in the upper part of the drying room, and an air outlet of the drying room is formed in the lower part of the drying room; a top-to-bottom circulation mode of the hot air is formed in the drying room. The pyrotechnic composition drying system serves as a special drying system applicable to firework pyrotechnic compositions and has the advantages of better safety, energy conservation and environmental friendliness.

Description

technical field [0001] The invention relates to a drying system for fireworks and pyrotechnic powder. Background technique [0002] In recent years, in the fireworks and firecrackers industry, heat pump drying technology has been gradually promoted to the whole industry, which has improved production efficiency and reduced losses caused by weather changes. However, the existing heat pump drying technology generally has the following two problems: [0003] 1. The utilization rate of heat energy is not high, and the energy consumption is still too large. Especially in winter when the temperature is low, the dependence on electric auxiliary heating is high, which has caused a great impact on the power grid. In particular, most of the fireworks and firecrackers production enterprises are located in rural areas, and rural electricity is generally insufficient, which affects normal production. . On the other hand, the direct dehumidification method adopted by the existing drying...

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Problems solved by technology

[0003] 1. The thermal energy utilization rate is not high, and the energy consumption is still too large

Especially in winter when the temperature is low, the dependence on electric auxiliary heating is high, which has caused a great impact on the power grid. In particular, most of the fireworks and firecrackers production enterprises are located in rural areas, and rural electricity is generally insufficient, which affects normal production.

On the other hand, the direct dehumidification method adopted by the existing drying room, while discharging moisture, it also takes away part of the heat energy; at the same time, under high temperature conditions (such as 60°C or above), the ability of the moisture in the air to condense into liquid water decrease or even disappear

[0004] 2. There are potential safety hazards

In winter, the drying temperature is low, and resistance auxiliary heating is required. At the same time, there is a lack of dust suppression measures in the drying room. The resistance auxiliary device is installed in the drying room, which brings greater danger to the drying of pyrotechnic powder; in addition, the direct moisture discharge system The air in the air has not been dedusted, and some gunpowder dust is carried into the external environment, which is not only not conducive to environmental protection, but also leaves a safety hazard

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