Dry-process deslagging and cleaning device and method applied to preparation of acid from pyrite

Abstract

The invention discloses a dry-process deslagging and cleaning device and method applied to preparation of acid from pyrite. The device comprises an electric dust remover ash discharge pipe, a cyclonedust remover ash discharge pipe, overflow spiral ash discharge machines, electric precipitation En-masse conveyors, a No. 2 boiler ash discharge pipe, a star-shaped ash discharge machine, a boiler En-masse conveyor, a No. 1 boiler ash discharge pipe, a fluidized bed furnace rear chamber slag discharge pipe, a roller slag discharge machine and a belt conveyor, wherein the pipe orifices of the electric dust remover ash discharge pipe and the cyclone dust remover ash discharge pipe are hermetically connected with respective overflow spiral ash discharge machines; the lower parts of the overflow spiral ash discharge machines are hermetically connected with the electric precipitation En-masse conveyors; the electric precipitation En-masse conveyors are connected with the boiler En-masse conveyor through a sealed pipeline; the boiler En-masse conveyors, the No. 1 boiler ash discharge pipe and the fluidized bed furnace rear chamber slag discharge pipe are all hermetically connected with the roller slag discharge machine; and the outlet end of the roller slag discharge machine is connected with the belt conveyor. The device and method of the invention solves problems in clean production, equipment durability and the like in dry-process deslagging for preparation of acid from pyrite pyrite, is simplified in cleaning process, saves energy, protects the environment and enhances economic benefits.

Description

technical field [0001] The invention belongs to the technical field of producing sulfuric acid from pyrite, and in particular relates to a dry slag discharge cleaning device and method for producing acid from pyrite. Background technique [0002] In the field of producing sulfuric acid from pyrite, dry slagging has always been a process that troubles many manufacturers in the sulfuric acid industry. Dust, dilute acid corrosion, difficult management, many problems. [0003] The main problems existing in the prior art are as follows: [0004] (1) For the slag discharged from the chamber after 900°C high-temperature roasting, it enters the buried scraper machine and is transported to the drum slag discharger through the buried scraper machine. The water jacket cooling buried scraper machine is expensive and requires desalinated water to avoid scaling and failure soon. Even so, the service life is not long, costly and frequent replacement. [0005] (2) For the high-temperatur...

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Problems solved by technology

[0011] Aiming at the above-mentioned problems and deficiencies in the prior art, the present invention provides a cleaning device and method for pyrite acid dry slag removal, which solves the problems of clean production and equipment durability, etc. Many problems, simplify the cleaning process, save energy and protect the environment, and improve economic benefits

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