Powdery material preheating pneumatic transmission device and technology

Abstract

The invention relates to the technical field of powdery material pneumatic transmission, in particular to a pulverized coal, slag powder, cement and other powdery materials preheating pneumatic transmission device and technology. A pneumatic transmission pipeline is divided into two branches; a pneumatic transmission gas preheating branch passes through a preheater, the other branch is a pneumatictransmission gas bypass pipe, and the two branches converge into a total pipeline at the outlet of the preheater; a hot exhaust gas pipeline is divided into two branches, a hot exhaust gas preheatingbranch passes through the preheater, the other branch is an exhaust gas bypass pipe, and the two branches converge into a total pipeline at the outlet of the preheater; a pneumatic transmission gas inlet cut-off valve and a pneumatic transmission gas outlet cut-off valve are arranged at the ends, entering and exiting the preheater, of the pneumatic transmission gas preheating branch; and an exhaust gas inlet cut-off valve and an exhaust gas outlet cut-off valve are arranged at the ends, entering and exiting the preheater, of the hot exhaust gas preheating branch. The powdery material preheating pneumatic transmission device preheats pneumatic transmission gas and increases the solid-gas ratio of pneumatic transmission to realize the purposes of energy conservation and consumption reduction and long-distance transmission.

Description

technical field [0001] The invention relates to the technical field of pneumatic conveying of powdery materials, and is applicable to electric power, metallurgy, cement and other industries, and particularly relates to a preheating pneumatic conveying device and process for powdery materials such as coal powder, slag powder and cement. Background technique [0002] At present, pneumatic conveying technology is widely used in electric power, metallurgy, cement and other industries. Pneumatic conveying uses the energy of airflow to transport granular materials along the direction of airflow in a closed pipeline, which is a specific application of fluidization technology. [0003] The main features of pneumatic conveying are large conveying capacity, fast conveying speed, loading in one place and unloading in multiple places. However, pneumatic conveying technology also faces many technical difficulties, such as long-distance dense phase conveying, pneumatic conveying pipeline...

AI Technical Summary

Problems solved by technology

However, due to the influence of many factors such as long conveying distance and poor material fluidity, many enterprises have not really realized long-distance dense phase conveying

[0005] At present, most of the pneumatic conveying technologies that achieve long-distance and high solid-gas ratio are based on special conveying equipment. To achieve a higher solid-gas ratio, the conveying equipment in the original system needs to be replaced, and the project volume and investment are relatively large.

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