Dust removing process of coal fine spraying system and apparatus thereof

Abstract

The invention relates to a dust removal process of a pulverized coal making and spraying system, and after coals to be sprayed are ground to powder by a coal mill, and the gas and powder are separated by a bag powder collecting device, and the pulverized coal is gathered into a pulverized coal collecting bin, and then unloaded to a spraying pot, and the spraying pot uses a pneumatic method to transport the pulverized coal into metallurgy furnaces. The dust removal process removes a bag dust remover originally arranged at the top of the pulverized coal collecting bin, and uses the bag powder collecting device on the pulverized coal collecting bin to replace functions of the bag dust remover, and the bag powder collecting device can be directly used for carrying out the gas-powder separation of mixtures in the pulverized coal collecting bin to discharge the purified waste gas into air through a pipe on the pulverized coal collecting bin and connected with an inlet of the bag powder collecting device. The dust removal device arranges a discharging pipe on the pulverized coal collecting bin, and connects the discharging pipe to the inlet of the bag powder collecting device and removes the bag dust remover arranged at the original pulverized coal collecting bin, thus simplifying the process equipment, saving the construction space and reducing the investment cost.

Description

technical field [0001] The invention relates to a blast furnace in a metallurgical industry system, in particular to a dust removal process and a device for a pulverized coal injection system. Background technique [0002] In the blast furnace pulverized coal injection system currently used in the metallurgical industry, the coal that needs to be injected in the process will be pulverized by the coal mill to separate the gas and powder through the bag powder collector. After the coal powder is collected, it will pass under the bag powder collector. The feeder falls into the pulverized coal collection bin, and then the pulverized coal is unloaded from the collection bin into the injection tank, and the injection tank is transported to the metallurgical furnace by pneumatic means. When the pulverized coal collection bin receives the powder falling from the bag powder collector, and when the injection tank is depressurized and exhausted, and the injection pipeline is blocked an...

AI Technical Summary

Problems solved by technology

[0004] The task of the present invention is to provide an improved dust removal process and device of the pulverized coal spraying system, which solves the problem of the dust removal process in the existing pulverized coal spraying system. , thus increasing the problem of process equipment and investment costs

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