Environment-friendly treating device for flue gas from sulfuric acid production

Abstract

The invention relates to an environment-friendly treating device for flue gas from sulfuric acid production. The environment-friendly treating device comprises a ventilating frame, a connecting pipe,a detachable device and anti-blocking sieving holes, wherein the left end of the ventilating frame is communicated with the ventilating frame; the detachable device is arranged at the upper end of theinterior of the ventilating frame; the anti-blocking sieving holes are arranged at the right end of the detachable device. The environment-friendly treating device has the beneficial effects that thedifficulties that filtering holes are easily blocked when mineral dust is removed and the quantity of normal filtering holes is reduced to cause reduction of the filtering efficiency, and after a period of time of working, partial mineral dust is easy to deposit on the surface of a filtering device to cause the increase of bear load on the device and the like can be solved; by expansion of hole diameter and auxiliary downward pushing of a pushing plate, the blocked mineral dust can be dredged and fall down; a filtering net can be detached at any time, so that convenience is brought for timedcleaning and replacement of the filtering net; the anti-blocking sieving holes can be wholly taken by the detachable device at any time, so that cleaning is convenient, the possibility of deposition of a large amount of mineral dust on the detachable device is reduced, and the increase of the bear load on the device can be avoided.

Description

Technical field [0001] The invention relates to the field of flue gas treatment, in particular to an environmentally friendly sulfuric acid production flue gas treatment device. Background technique [0002] The production of sulfuric acid adopts the contact method sulfuric acid production process using pyrite as raw material. Its main processes include roasting of pyrite, purification of furnace gas, drying of gas, conversion of sulfur dioxide and absorption of sulfur trioxide. During the production process, The furnace gas from the waste heat boiler contains a large amount of mineral dust, which needs to be removed. However, the existing mineral dust removal often has the following defects: 1. When the mineral dust is removed, it is easy to block the filter hole. , The number of holes for normal filtration is reduced, which reduces the filtration efficiency; 2. After a period of work, part of the mineral dust is easy to accumulate on the surface of the filter device, causing th...

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Problems solved by technology

[0004] The invention can solve the problem that the filter holes are easily blocked when the mineral dust is removed, and the number of normally filtered holes is reduced to reduce the filtration efficiency. After working for a period of time, part of the mineral dust is easy to accumulate on the surface of the filter device, resulting in the failure of the device. Problems such as increased load

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