Chemical feeding device for boiler

Abstract

The invention discloses a chemical feeding device for a boiler. The chemical feeding device comprises structures of a chemical feeding metering box, a stirring machine, chemical feeding pumps, all pipelines and the like, wherein the stirring machine is arranged at the top of the chemical feeding metering box, the bottom of the chemical feeding metering box is connected with one end of a liquid chemical output pipeline, the other end of the liquid chemical output pipeline is divided into two branch pipelines to be respectively connected with the two chemical feeding pumps, and the two chemicalfeeding pumps are finally connected with the boiler through a total output pipeline. The two chemical feeding pumps are finally connected with the boiler through the total output pipeline, so that mixed liquid chemical can be pumped into the boiler; finally, the boiler is helped to achieve continuous chemical feeding, and acid corrosion to the boiler is prevented from being generated. The chemicalfeeding device for the boiler disclosed by the invention has the technical advantages of novel space structure distribution, reasonable structure, ability in feeding and supply chemicals continuously, strong practicability and the like.

Description

technical field [0001] The invention relates to the technical field of water treatment equipment, in particular to a boiler dosing device. Background technique [0002] At present, there is an imported drying cylinder in our paper workshop, which has been used for four years. The steam supplied by the boiler enters the drying cylinder, requiring a pressure of 1.35MPa and an evaporation capacity of 10t / h. The drying cylinder has no external water source, and the condensed water is discharged through steam water Separator - water pump - deaerator - feed water pump - economizer - boiler drum. The steam recovered from the top of the steam-water separator returns to the drying cylinder through the heat pump to participate in work again. The above condensed return water accounts for 60-70% of the total water consumption of the boiler. Due to the clogging of iron oxide powder, the pipe needs to be shut down for pigging every two months. [0003] The researchers investigated the ...

AI Technical Summary

Problems solved by technology

Due to the clogging of iron oxide powder, the pipe needs to be shut down every two months for pigging

[0003] The researchers investigated the above problems and found that the above problems were related to the design of the small boiler operation system. The above-mentioned steam drum boiler did not have a reserved dosing port. The PH and alkalinity control dosing in the furnace was carried out in the soft water tank, which could not achieve continuous Dosing, the disadvantage of this method is that the alkalinity and PH adjustment speed is slow, and the boiler is prone to acid corrosion

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