Vacuum belt dehydrator

Abstract

The invention relates to a vacuum belt dehydrator which comprises a rack, two belt conveying lines, a dehydration assembly, a discharging hopper, filter cloth, a driven roller, a pressing roller, a scraping plate, a receiving barrel and a spray head. The two belt conveying lines are symmetrically arranged in the rack front and back. The discharging hopper is arranged on the rack and arranged abovethe left ends of the two belt conveying lines; the driven rollers are transversely arranged at the left ends, the right ends and the lower portions of the two belt conveying lines; the filter cloth is arranged outside the two belt conveying lines in a sleeving mode and sequentially winds around the driven rollers, wherein the upper half portion of the filter cloth is attached to the upper sides of the two belt conveying lines. Three times of dehydration of desulfurized gypsum slurry are achieved, dehydration principles are different, the dehydration effect is greatly improved, and then the dehydration efficiency is improved; the probability that the filter cloth is blocked is greatly reduced, so that the replacement frequency of the filter cloth is greatly reduced, and time and labor aresaved.

Description

Technical field [0001] The invention relates to a vacuum belt dehydrator. Background technique [0002] At present, environmental pollution is becoming more and more serious, and various industries have stricter requirements for environmental protection indicators. However, some cement companies are restricted by raw materials, and their flue gas contains high sulfur dioxide content, so flue gas needs to be desulfurized. [0003] At present, most cement companies use the limestone-gypsum method for desulfurization. After the limestone slurry is atomized by the spray device, it fully contacts and reacts with the flue gas. The reacted limestone-gypsum slurry is forced to oxidize to form a desulfurized gypsum slurry for desulfurization. After the gypsum slurry is dehydrated, desulfurized gypsum is obtained; the dehydration of the desulfurized gypsum slurry needs to be completed in a vacuum belt dehydrator. The existing vacuum belt dehydrator has poor dehydration effect. In order to ac...

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Problems solved by technology

[0003] At present, most cement enterprises use the limestone-gypsum method for desulfurization. After the limestone slurry is atomized by the spray device, it fully contacts and reacts with the flue gas. After the reaction, the limestone-gypsum slurry is forced to oxidize to form a desulfurization gypsum slurry. Desulfurized gypsum can be obtained after dehydration of gypsum slurry; the dehydration of desulfurized gypsum slurry needs to be completed in a vacuum belt dehydrator. The dehydration effect of the existing vacuum belt dehydrator is poor. The efficiency is low, and the filter cloth is easy to clog after a period of use, resulting in worse dehydration effect. At this time, frequent shutdowns are required to replace the filter cloth, which is time-consuming and laborious, resulting in lower dehydration efficiency, which needs further improvement

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