Novel pulverized coal metered pneumatic storage system

Abstract

The invention discloses a novel pulverized coal metered pneumatic storage system which mainly comprises a powder storage device and a powder-supplying device. The powder storage device mainly comprises a powder storage tank, a powder-making tube, a position control mechanism and an anti-self-ignite protection mechanism, wherein a bag-type dust collector is arranged at the top of the powder storage tank. The powder-supplying device mainly comprises a breaking auger, a feeding auger and a weighing auger, and the three augers are all provided with a drive mechanism. The breaking auger, the feeding auger and the weighing auger are drivingly connected with each other from up to down in a soft connection manner, the breaking auger is arranged at the feed outlet of the powder storage tank, a weighing sensor is consentingly arranged at the feed outlet of the weighing auger, a venturi is softly arranged at the feed outlet of the weighing auger, and a roots blower is arranged at the port of the venturi. The novel coal metered pneumatic storage system has the advantages that secure, stable and reliable power storing is achieved, smooth, fast and accurate powder supplying is achieved, operators' labor intensity is greatly reduced, and labor efficiency and economic benefits are increased.

Description

technical field [0001] The invention relates to the technical field of pulverized coal storage and supply systems, in particular to a novel pulverized coal metering pneumatic storage and supply system. Background technique [0002] In modern industrial production, the energy provided by coal combustion is one of the important methods adopted by most industrial boilers. In order to meet the combustion requirements of the boiler, the raw coal needs to be ground into fine powder, and sent to the boiler through a specific pulverized coal conveying system at a certain air-to-coal ratio. The whole pulverized coal transportation process must be safe, reliable, continuous, accurate and stable. At this time, whether the parameter configuration of the pulverized coal storage and supply system is reasonable and accurate is related to the normal operation of the entire boiler system, so it should be treated with caution. According to the requirements of the production process, the exi...

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Problems solved by technology

[0003] However, due to the insufficiency of the existing technology, during the storage of pulverized coal in the existing powder storage device, due to the absence of effective detection and prevention measures, the storage capacity often occurs too much or too little, and the safety and stability of the powder supply are relatively low. In addition, the pulverized coal is easy to spontaneously ignite in the powder storage device, which will reduce the oxygen in the device and produce carbon monoxide, which will lead to excessive pressure in the chamber and the danger of chamber explosion

During the powder feeding process of the existing powder supply device, it is necessary not only to ensure that the coal powder will not block the supply pipeline, but also to carry out quantitative and accurate feeding according to the energy required for production. Due to the limited development of the existing powder storage device and powder supply device , most of the materials are directly stored in the powder storage device, and the powder supply device uses a powder feeding pipe to feed directly. The pulverized coal is easy to agglomerate and block in the powder storage device and the powder feeding pipe, and factors such as vibration generated by other parts of the system will affect The weight accuracy of the powder feeding pipe makes it difficult to achieve the effect of non-clogging and accurate feeding at the same time

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