Dust-reducing circulating water system to improve system environmental indicators

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The dust reduction system is an important equipment for energy saving and emission reduction and control of environmental protection indicators in boiler rooms. Since the wastewater contains dust phosphate sulfate, sulfite, and other corrosive compounds of heavy metals, once the waste water back into the washing and heating system not only cause the device, corrosion of pipes, and the pipe will be clogged spray, Affect the dust reduction effect, and the sediment should be cleaned regularly.

Shaping this coal washing plant for dust suppression system and the structure of the pool layout has been redesigned transformation. Among them, the layout of the pool structure: the original sedimentation tank cover design can be lifted by 3 people, and it can be easily picked up by changing to a small-sized cover.

Dust-reducing system: The electric control part adopts both local and automatic control modes. It is powered by the maintenance power supply and is equipped with a separate control distribution box. At the same time, an alarm device is added to the electric control to support the dust removal line. An electric contact pressure gauge. When the upper and lower pressure limits are adjusted, the stability and smoothness of the spray system can be guaranteed. When the pressure reaches the upper and lower limits, the alarm bell will remind the post personnel to check, and the automatic signal controls the circulating pump to start and stop; the mechanical part selects a 3KW slurry pump for circulation.

Since the new replacement circulating water pump has been put into use, the pressure has remained basically stable, ensuring the dust removal effect. The start and stop of the circulation pump is automatic and does not require special personnel to operate. When there is a special situation, the local operation only needs to press the start and stop button outside the control box door to ensure the safety of the operator. can. The sediment is not discharged twice, avoiding blockage of pipes and sprays, and the overall formation of wastewater recycling. After the modification of the portable cover, it can be operated by a single person, which reduces the labor intensity of the employees and the proportion of personnel, which improves the work efficiency. According to the analysis, the automatic control method is adopted, the environmental protection index is increased by about 2 times, and the labor saving is 1 person/shift; the use of the slurry pump is 5-8 times longer than the original submersible pump, and the cost is 3,000 yuan/year.

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