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Sintering flue gas dense-phase semi-dry desulfurization and denitrification device and process

A semi-dry desulfurization and sintering flue gas technology, which is applied in separation methods, gas treatment, chemical instruments and methods, etc., can solve the problems of dry raw material performance and high economic cost, high investment cost, and heavy burden on enterprises, and achieve Simple structure, low investment and short construction period

Pending Publication Date: 2020-11-06
TANGSHAN IRON & STEEL GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, activated coke desulfurization and denitrification technology and circulating fluidized bed desulfurization plus SCR denitrification technology are relatively mature. High, the burden on the enterprise is too heavy, so the promotion is restricted to a certain extent

Method used

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  • Sintering flue gas dense-phase semi-dry desulfurization and denitrification device and process
  • Sintering flue gas dense-phase semi-dry desulfurization and denitrification device and process
  • Sintering flue gas dense-phase semi-dry desulfurization and denitrification device and process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] When the sintering machine is in full production, a sinter flue gas dense phase semi-dry desulfurization and denitrification process includes flue gas oxidation process, sulfur dioxide and nitrogen oxide absorption process, and discharge process of absorption by-products. The specific steps are:

[0040] Before starting the oxidation chamber 1, turn on the oxidation and denitration agent pump 24, pump the oxidation and denitration agent in the oxidation and denitration agent storage tank 23 into the circulation pool (7) of the oxidation chamber 1, and keep the liquid level in the circulation pool 7 at 1200 mm;

[0041] Before starting the oxidation chamber 1, the absorbent is transported from the ash hopper 22 at the bottom of the absorption chamber 2 to the bottom of the bucket elevator 11 through the zipper machine 28, and then vertically transported to the absorbent humidifier 12 on the top of the absorption chamber 2 through the bucket elevator 11, and passed thro...

Embodiment 2

[0054] During the start-up process of the sintering machine, a gas-dense phase semi-dry desulfurization and desulfurization process for sintering flue, including flue gas oxidation process, sulfur dioxide and nitrogen oxide absorption process, and discharge process of absorption by-products, the specific steps are:

[0055] Before starting the oxidation chamber 1, turn on the oxidation and denitration agent pump 24, pump the oxidation and denitration agent in the oxidation and denitration agent storage tank 23 into the circulation pool (7) of the oxidation chamber 1, and keep the liquid level in the circulation pool 7 at 1200 mm;

[0056] Before starting the oxidation chamber 1, the absorbent is transported from the ash hopper 22 at the bottom of the absorption chamber 2 to the bottom of the bucket elevator 11 through the zipper machine 28, and then vertically transported to the absorbent humidifier 12 on the top of the absorption chamber 2 through the bucket elevator 11, an...

Embodiment 3

[0069] During the shutdown process of the sintering machine, a sintering flue gas dense phase semi-dry desulfurization and denitrification process includes flue gas oxidation process, sulfur dioxide and nitrogen oxide absorption process, and discharge process of absorption by-products. The specific steps are:

[0070] Before starting the oxidation chamber 1, turn on the oxidation and denitration agent pump 24, pump the oxidation and denitration agent in the oxidation and denitration agent storage tank 23 into the circulation pool (7) of the oxidation chamber 1, and keep the liquid level in the circulation pool 7 at 1300 mm;

[0071] Before starting the oxidation chamber 1, the absorbent is transported from the ash hopper 22 at the bottom of the absorption chamber 2 to the bottom of the bucket elevator 11 through the zipper machine 28, and then vertically transported to the absorbent humidifier 12 on the top of the absorption chamber 2 through the bucket elevator 11, and pass...

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Abstract

The invention relates to a sintering flue gas dense-phase semi-dry desulfurization and denitrification device and process, and belongs to the technical field of metallurgy environmental protection. The device comprises an oxidation bin (1), an absorption bin (2) and a pipeline (16); the oxidation bin (1) and the absorption bin (2) are of a closed box structure; the oxidation bin (1) and the absorption bin (2) are communicated through the pipeline (16). The sintering flue gas oxidation denitration combined dense-phase semidry desulfurization process comprises a flue gas oxidation process, a sulfur dioxide and nitrogen oxide absorption process and an absorption byproduct discharge process. The device has the advantages of simple structure, low investment and short construction period. The process is reasonable in operation, remarkable in desulfurization and denitrification effect and capable of meeting the ultralow emission requirement.

Description

technical field [0001] The invention relates to a sintering flue gas dense-phase semi-dry desulfurization and denitrification device and process, belonging to the technical field of metallurgy and environmental protection. Background technique [0002] In order to meet the ultra-low emission standards for the discharge of pollutants from the sintering machine head, metallurgical enterprises have begun to carry out ultra-low emission transformation of sintering machines. From the perspective of economic benefits and application prospects, the combined removal of sulfur dioxide and nitrogen oxides is the most practical. In recent years, activated coke desulfurization and denitrification technology and circulating fluidized bed desulfurization plus SCR denitrification technology are relatively mature. High, the burden on enterprises is too heavy, so that the promotion has been restricted to a certain extent. In view of the fact that some metallurgical enterprises have built d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/75B01D53/78B01D53/83B01D53/50B01D53/56
CPCB01D53/75B01D53/78B01D53/83B01D53/508B01D53/56B01D2258/0283B01D2251/304B01D2251/404
Inventor 关健庞得奇崔一芳范兰涛王洪军何金贤郝建海蒋民宁秦玉杰
Owner TANGSHAN IRON & STEEL GROUP
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