High temperature smoke positive pressure conveying treatment process and special equipment thereof

Abstract

The invention discloses high-temperature smoke dust positive-pressure conveying processing technology, which comprises the following steps: collecting high-temperature smoke dust into a dust stratification hopper; screening and filtering the high-temperature smoke dust through a grizzly sieve arranged in the dust stratification hopper, and separating the high-temperature smoke dust from large block materials which cannot conveyed directly in the smoke dust; introducing the high-temperature smoke dust of which the large block materials are removed into a middle bin through a feed delivery pipe; when the smoke dust in the middle barn reaches a preset material position, opening a sealed feeding valve first, and then opening a first automatic trip valve; simultaneously, introducing high-pressure gas into the middle bin to make the smoke dust enter a delivery pump bin; and when the smoke dust in the delivery pump bin reaches the preset material position, stopping introducing the high-pressure gas into the middle bin, cutting off a channel between the middle bin and the delivery pump bin, and introducing the high-pressure gas into the delivery pump bin, and delivering the smoke dust to a destination bin by the high-pressure gas. The whole technological process is finished under the totally-sealed condition. The processing technology can cancel the open transportation of the smoke dust, adopt sealed type transportation, save labor, and put an end to material loss and environmental pollution.

Description

technical field [0001] The invention relates to a fume treatment process in the field of metallurgy, in particular to a high-temperature fume positive pressure conveying treatment process. Background technique [0002] In the metallurgical industry, the high-temperature flue gas discharged from the metallurgical furnace has a high dust content. This part of the flue dust contains a large amount of valuable metals, and it will also bring many negative effects to the next production process and smoke exhaust equipment. It must be This part of the fume is recycled. At present, there are basically two processing methods. The first process flow is: high temperature dusty flue gas → waste heat boiler → natural settlement of high temperature flue dust → ash hopper collection → scraper transport → sealed discharge valve → fine particle dust negative pressure conveying → large particle and lumpy dust Fragmented after being collected by fume canisters. The second process flow is: h...

AI Technical Summary

Problems solved by technology

The invention has simple process, convenient operation, high efficiency, low energy consumption, less faults, convenient maintenance, less investment, and solves the problems of material loss and environmental pollution; The problems brought about by the pressure conveying process are large investment, large floor area, multiple equipment, high failure rate, serious leakage, and environmental pollution. damage to ensure the service life of the feed valve

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