Suspension-type economizer ash conveying system

Abstract

The invention discloses a suspension-type economizer ash conveying system used for conveying flying ash in an economizer hopper to an ash silo or an electric precipitation inlet flue. The economizer ash conveying system comprises a sender group, a discharge valve, an air supply device and an assorted conveying pipeline; the sender group comprises multiple senders which are serially connected, each sender is suspended to be formed under a corresponding economizer hopper, a feed valve is further arranged between each sender and the corresponding economizer hopper, the discharge valve is arranged on the conveying pipeline of an outlet of the sender group, and the air supply device supplies conveying power for the flying ash in the conveying pipeline. The senders suspended under the hoppers are adopted to convey the flying ash of the economizer to the ash solo or the electric precipitation inlet flue, so that the problems that a conventional economizer ash conveying system is huge in energy consumption, serious in abrasion of the pipeline and the valves, prone to blockage, high in needed mounting height and the like are solved; the economizer ash conveying system is enabled to be more economical, practical and reasonable, and reliability of system operation can be greatly improved.

Description

[0001] technical field [0002] The invention relates to a pneumatic conveying system for powder materials, in particular to an economizer fly ash pneumatic conveying system. Background technique [0003] The economizer is the heating surface in the tail flue of the boiler that heats the boiler feed water into saturated water under the drum pressure. Because it absorbs relatively low-temperature flue gas, it reduces the exhaust gas temperature of the flue gas, saves energy and improves efficiency. , so it is called an economizer. The economizer is an important part of the boiler. If it cannot operate normally, it will cause wear and blockage of the air preheater and affect the heat exchange effect of the heat exchange element. Boiler economizers are usually equipped with an ash outlet, and a conveying system is installed under the ash outlet to send away the fly ash collected in the ash hopper in time. There are three commonly used ash conveying methods for economizers: pn...

AI Technical Summary

Problems solved by technology

[0006] This system uses a transmitter suspended under the ash hopper to transport the fly ash of the economizer to the ash storage or the inlet flue of the electrostatic precipitator, which solves the problem of high energy consumption, serious wear of pipes and valves, and easy pipe blockage in the traditional economizer conveying system , high installation height and other issues, making the ash conveying system of the economizer more economical, practical and reasonable, and the reliability of the system operation is also greatly improved

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