Pneumatic limestone powder conveying system

Abstract

The invention discloses a limestone powder pneumatic conveying system which is used for conveying limestone powder in an intermediate limestone powder chamber to a front limestone powder chamber. The limestone powder pneumatic conveying system comprises a sender, a feed valve, a discharge valve, an air supply device and an assorted conveying pipeline, the sender is arranged under the intermediate limestone powder chamber, the feed valve and the discharge valve are respectively formed in an inlet and an outlet of the sender, the air supply device provides air power for limestone powder in the conveying pipeline, and a blockage blowing valve assembly is further arranged on the conveying pipeline between the sender and the front limestone chamber. The limestone powder is conveyed to a designed place in a pneumatic conveying mode. By the limestone powder pneumatic conveying system, the problems that a conventional desulfurization agent delivery system is large in energy consumption, serious in abrasion, low in reliability and the like are solved, security of the desulfurization system is greatly improved, and environmental protection is benefited. A blockage removing device is arranged to ensure smoothness of the conveying pipeline.

Description

[0001] technical field [0002] The invention relates to a pneumatic conveying system for powdery materials, in particular to a limestone powder pneumatic conveying system involved in a desulfurization system. Background technique [0003] With the strengthening of people's awareness of environmental protection and the promulgation of national environmental protection policies, many domestic power plants are stepping up renovation or adding new desulfurization devices. At present, most of the desulfurization methods are wet and dry desulfurization processes. In wet and dry desulfurization systems, many of them use pneumatic conveying technology to transport desulfurizers. Judging from the types of desulfurizers, the main materials generally include limestone powder and calcium hydroxide, and limestone powder also contains calcium carbonate and calcium oxide. From the shape of the material, there are powder materials, granular materials, powder-granule mixtures and so on. ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a limestone powder pneumatic conveying system, which solves the problems of large gas consumption, serious wear, and valve jamming in the prior art.

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