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A dust recovery process for semi-dry desulfurization and dust removal

A semi-dry desulfurization and dust recovery technology, applied in separation methods, chemical instruments and methods, clay products, etc., can solve problems such as tile bubbles and pores

Active Publication Date: 2021-06-08
佛山君帝环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of the deficiencies of the prior art above, the purpose of the present invention is to provide a dust recovery process for semi-dry desulfurization and dust removal, aiming to solve the problem of ceramic tiles caused by reusing the dust collected by semi-dry desulfurization and dust removal in the ceramic industry in the prior art. Bubbles, porosity and other quality problems

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  • A dust recovery process for semi-dry desulfurization and dust removal
  • A dust recovery process for semi-dry desulfurization and dust removal

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Embodiment Construction

[0022] The present invention provides a dust recovery process for semi-dry desulfurization and dedusting. In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] see figure 1 and figure 2 , the present invention provides a dust recovery process for semi-dry desulfurization and dedusting, comprising the following steps:

[0024] A. Add process water to the dust collected by the desulfurization and dust removal system, and stir it into a slurry;

[0025] B. Add a pH regulator to the above slurry or pass through kiln flue gas before desulfurization to adjust the pH value of the slurry; specifically, the pH regulator can be directly added to the stir...

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Abstract

The invention discloses a dust recovery process for semi-dry desulfurization and dust removal. Process water is added to the dust collected by the desulfurization and dust removal system, stirred to form a slurry, and then a pH regulator is added to the slurry or passed into a kiln before desulfurization. flue gas, adjust the pH value of the slurry, and then pass through the oxidant to oxidize the sulfite in the slurry to sulfate, precipitate, and separate the solid and liquid. The separated liquid components are recycled for the deployment of the slurry, and the solid components are used as Reuse of ceramic raw materials; the process realizes the online uninterrupted recycling of desulfurization dust, and the recovered dust can be directly used as ceramic raw materials, greatly reducing the cost of ceramic production and environmental pollution caused by waste gas and dust.

Description

technical field [0001] The invention relates to the technical field of desulfurization and dust removal, in particular to a dust recovery process for semi-dry desulfurization and dust removal. Background technique [0002] The semi-dry desulfurization and dust removal system is widely used in the ceramic industry. Generally, alkaline substances such as calcium hydroxide are used as desulfurization agents. Collected by the bag filter; the product after desulfurization by the desulfurizer is mainly calcium sulfite, 80% of the dust collected in the bag filter is available ceramic raw powder, and the other 20% is desulfurization by-products such as calcium sulfite. [0003] The decomposition temperature of calcium sulfite is generally 500-600°C. In the ceramic production process, the firing temperature of the kiln is generally between 1100-1200°C. If the dust collected in the semi-dry desulfurization and dust removal system is not treated, it can be directly used as ceramics Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/80B01D53/50C04B33/132C04B35/00
CPCB01D53/507B01D53/80B01D2258/0283C04B33/132C04B35/62204Y02P40/60
Inventor 王力行王立军
Owner 佛山君帝环保科技有限公司