Lime slurry pump inlet main pipe capable of preventing water robbing tripping

Abstract

The invention discloses a lime slurry pump inlet main pipe capable of preventing water robbing tripping. The lime slurry pump inlet main pipe comprises a slurry storage tank, the slurry storage tank is connected with a master pipe, the lime slurry pump inlet main pipe comprises a plurality of slurry pumps, the main pipe is connected to the slurry pumps through a pipeline system, the lime slurry pump inlet main pipe comprises a main pipe body, the slurry storage tank is connected with the main pipe body, and the main pipe body is connected to the slurry pumps through the pipeline system; and the main pipe body is connected with a flushing pipeline. The slurry storage tank is connected with a gate valve through a pipeline, the output end of the gate valve is connected with a first filter, and the output end of the first filter is connected with the input end of the main pipe. By the adoption of the lime slurry pump inlet main pipe capable of preventing water grabbing tripping, the phenomenon that multiple pumps grab water due to the fact that the flow area of the inlet main pipe is reduced and lime slurry amount supply is reduced when high-viscosity media such as lime slurry are conveyed can be effectively avoided, and then the problem that the lime slurry pump trips is avoided.

Description

technical field [0001] The invention relates to the field of garbage treatment, in particular to an inlet main pipe of a lime slurry pump that prevents water grabbing and tripping. Background technique [0002] The deacidification process of the flue gas purification unit of the waste incineration power plant generally adopts the semi-dry process. The semi-dry process uses a spray-drying absorption tower, and a certain concentration of lime slurry is sprayed into the absorption tower through a high-speed rotating atomizer to react with acid gas to achieve the purpose of removing acid gas. [0003] Waste incineration power plants with a scale greater than 1000t / d generally have 2 or more production lines, each production line corresponds to a flue gas purification unit, and each flue gas purification unit corresponds to a lime slurry pump, while waste incineration power plants Generally, there is a spare lime slurry pump, so many waste incineration power plants have multiple...

AI Technical Summary

Problems solved by technology

However, in the lime slurry transportation process, there are the following disadvantages: Compared with other liquids, lime slurry has a high viscosity and lime particles are mixed. When the delivery pipe diameter is constant, as the operation cycle increases, due to deposition and adhesion, the flow of the main pipe will be caused. When the area is reduced, when the supply of lime slurry in the inlet main pipe decreases, it will cause multiple lime paddle pumps to grab water, and the outlet pressure will decrease, which will cause the lime slurry pump to trip

[0005] Once the lime slurry pump trips, it will affect the normal operation of the flue gas purification system of the waste incineration power plant. At the same time, the troubleshooting of this kind of fault not only requires accurate judgment, but also takes a long time. The main pipe will cause all the propeller supply systems to stop completely, resulting in excessive discharge of acid gas pollutants in the flue gas of waste incineration power plants for a long time

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