Gasification furnace replacement discharge system

Abstract

The invention discloses a replacement and discharge system for a gasification furnace, which belongs to the field of coal chemical industry, and is characterized in that a high-pressure inert gas replacement line is added to the gasification furnace, a low-pressure nitrogen replacement line is added to a cyclone separator, and a low-pressure nitrogen replacement line is added to a washing tower; a process of emptying a first hand valve on site and an emptying second hand valve on site is added on a pressure equalizing valve pipeline of a pressure regulating valve from an outlet of a washing tower to a conversion section so as to achieve the purpose of replacement; a high-pressure inert gas replacement pipeline is additionally arranged in the chemical furnace, a low-pressure nitrogen replacement pipeline is additionally arranged in the cyclone separator and the washing tower, the pressurizing speed is increased, the replacement time is shortened, the furnace preparation time is shortened, and great economic benefits can be generated; low-pressure nitrogen replacement pipelines are additionally arranged on the cyclone separator and the washing tower, so that dead zones of the system can be greatly reduced, and the system can be replaced more thoroughly.

Description

technical field [0001] The invention belongs to the field of coal chemical industry, and particularly relates to a gasifier displacement discharge system. Background technique [0002] The gasifier of the gasification unit needs to be replaced by the system to prevent dust explosion or explosion accident during the ignition process, so as to ensure the safety of materials after entering the system. The gasifier needs to be boosted and ignited first in the process of charging and driving, and the gas can be produced after the charging is completed. Only when the synthesis gas with qualified temperature and pressure is produced can it be sent to the shift section. Before this, the gas from the outlet of the scrubber can only be sent to the flare for combustion. The oxygen content in the gas sent to the torch must be less than 0.5%. Because of the presence of air inside, the syngas at the outlet of the scrubber can only be vented to the torch after the replacement and dischar...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the object of the present invention is to provide a gasification furnace replacement exhaust system to solve the problem o

Images