Device and method for stably discharging ash by hopper under low-temperature condition in winter

Abstract

The invention discloses a device and method for stably discharging ash through a hopper under the low-temperature condition in winter. The device comprises a hot air supply unit, a heat exchange unit, an exhaust unit and a control unit. The hot air supply unit comprises a dust remover, a dust remover purified gas outlet pipeline, a purified gas outlet straight pipe and a purified gas outlet bent pipe which are communicated in sequence; the heat exchange unit comprises a heat exchange chamber gas inlet pipeline, a heat exchange chamber and a heat exchange chamber gas outlet pipeline which are communicated in sequence, a dust remover dust collecting hopper is mounted in the heat exchange chamber, and the purified gas outlet elbow is communicated with the heat exchange chamber gas inlet pipeline; the air exhaust unit comprises a heat exchange chamber air outlet bent pipe, a heat exchange chamber air outlet straight pipe and a dust remover air inlet pipeline which are communicated in sequence, and the heat exchange chamber air outlet pipeline is communicated with the heat exchange chamber air outlet bent pipe. According to the invention, ash bucket collapse and blockage caused by low temperature can be effectively reduced, and consumption of energy and water resources is reduced while the utilization rate of equipment is improved.

Description

technical field [0001] The invention belongs to the technical field of air pollution control, and in particular relates to a device and method for ensuring continuous, stable and safe ash output from a dust removal system bin under low temperature conditions in winter. Background technique [0002] Dust collector is a kind of industrial equipment and environmental protection device widely used in powder material separation and collection. Due to their large size, such devices are often arranged in outdoor open spaces. In the cold winter season, due to the low external ambient temperature, the ash hopper at the bottom of the dust collector is easy to collect ash, which causes the powder material to collapse instantly, block the hopper, and occupy the effective dust removal space, which further leads to the phenomenon of dust loss or exceeding the standard at the equipment outlet. At the same time, the screw conveyor is too late to transport too much powder material, and the ...

AI Technical Summary

Problems solved by technology

These methods reduce the probability of clogging caused by dust accumulation through technical means, reduce fan power consumption and low-temperature corrosion, but also bring secondary problems

For example, wet dust collection and ash removal have high efficiency, but it is difficult to adapt to the collection and cleaning of hydraulic cement materials and clay materials bonded to water, especially without considering the bag filter to filter high-concentration particles and material properties. , some cement dust particles and clay dust particles will become viscous when wet, and it is very difficult to clean up

The angle of the hopper increases, resulting in a decrease in the total volume, which reduces the dust separation efficiency

On the other hand, because the collapse phenomenon is related to the temperature and occurs irregularly, manual inspection alone is time-consuming and labor-intensive, and the efficiency is too low. It is difficult to solve it through regular inspection

Finally, the method of preventing clogging by raising the temperature and spraying water to remove dust consumes more heat energy and water resources, which is not a method of saving energy and reducing consumption

Images