Dredging method for lower storage tank coil pipe of tobacco cutting and expanding line

Abstract

The method of dredging the lower storage tank coil pipe in tobacco cutting and expanding line includes separating the pipeline between the coil pipe and the drier, inversely blowing the coil pipe with the high pressure CO2 flow from the technological tank to blow out jamming matter in the pipeline, and re-connecting the pipeline. The present invention can complete the dredging operation within 4 hr and in CO2 consumption less than one ton and less environmental pollution.

Description

technical field [0001] The invention relates to a transportation method for a lower storage tank coil pipe of a carbon dioxide recovery system in a tobacco industry filament expansion line. Background technique [0002] The carbon dioxide recovery system in the tobacco industry's silk expansion line is mainly composed of a dryer, a process tank, an upper and lower storage tank and a coil. The main function of the coil is to cool and liquefy the recovered carbon dioxide, and then replenish it to the process tank. The coil is in the lower storage tank and is connected with the dryer through pipelines. The inlet of the coil is often blocked by ice. If the coil is blocked, the entire carbon dioxide recovery system will be paralyzed, and the carbon dioxide cannot be recovered, causing the expansion line to stop production. At present, the commonly used treatment method for coil blockage is: first discharge the carbon dioxide in the storage tank, then use steam to blow out the co...

AI Technical Summary

Problems solved by technology

[0003] During the normal production of the expansion line, the carbon dioxide in the storage tank generally maintains 30 tons. The above-mentioned treatment method needs to discharge the carbon dioxide into the atmosphere, causing great waste and environmental pollution. It takes 72 hours at the earliest to complete the discharge, and the labor intensity is also very high.

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