Desulfurization and denitrification solid particles as well as preparation method and application thereof

A solid particle, desulfurization and denitrification technology, applied in separation methods, chemical instruments and methods, and dispersed particle separation, etc., can solve the problems of large loss, difficult recovery, and low strength of desulfurization and denitrification agents, so as to promote oxidation and improve removal capacity , the effect of high breakthrough sulfur capacity

Pending Publication Date: 2021-11-19
ZHONGJING ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The desulfurization and denitrification agent uses magnesium oxide as the main active ingredient, and is only prepared by simple mixing. The strength of the obtained desulfurization and denitrification agent is low, and the loss in the desulfurization and denitrification process is large, and it is not easy to recycle.

Method used

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  • Desulfurization and denitrification solid particles as well as preparation method and application thereof
  • Desulfurization and denitrification solid particles as well as preparation method and application thereof
  • Desulfurization and denitrification solid particles as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037]

[0038] The preparation method comprises the steps of: lime, iron, manganese oxide, cerium oxide, cobalt oxide, urea, bentonite and cement mix, then mixed with water, granulation, drying, desulfurization and denitrification to obtain solid particles. Amounts of raw materials as previously described, are not repeated here.

[0039] Lime powder, iron oxide, manganese oxide, cerium oxide, cobalt oxide, urea, bentonite and the cement mixing process may be carried out in a kneader. The mixing time is 10 ~ 30min; preferably 10 ~ 20min; more preferably 15 ~ 20min.

[0040] Other raw materials mixed with water may be carried out in a kneader. Water can be divided into multiple additions. E.g. 2 to 5 times; preferably, water was added three times. The mixing time may be 20 ~ 50min; preferably 25 ~ 40min; more preferably 30 ~ 40min. This is conducive to improve the desulfurization and denitration strength of the solid particles.

[0041] Granulation can be carried out in the granul...

Embodiment 1～6 and comparative example 1～8

[0055] The lime powder, 8 parts by weight of iron, manganese oxide, cerium oxide, cobalt oxide, 10 parts by weight of urea, 4 parts by weight of bentonite and 6 parts by weight of cement in the mixing kneader in 15min. 15 parts by weight of the average added in three portions of deionized water, mixed 30min. In granulated in a granulator, dried in an oven 3h, cooled to obtain solid particles desulfurization and denitration. Desulfurization and denitrification of solid particles is cylindrical, having a diameter of 5 ~ 10mm, a length of 8 ~ 15mm. Specific conditions were as shown in Table 1, the solid particles desulfurization and denitration performance as shown in Table 2.

[0056] Table 1

[0057]

[0058] Table 2

[0059]

[0060] Difference between Examples 1-3 and Comparative Examples 1-2 is that different amounts of manganese oxide. As apparent from Table 2, the desulfurization and denitrification of solid particles and sulfur capacity penetration penetration nitrate con...

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PUM

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Abstract

The invention discloses desulfurization and denitrification solid particles as well as a preparation method and application thereof. The desulfurization and denitrification solid particles are prepared from the following raw materials in parts by weight: 49-54 parts of lime powder, 5-12 parts of iron powder, 6-11 parts of manganese oxide, 5-8 parts of cerium oxide, 4-7 parts of cobalt oxide, 5-15 parts of urea, 2-8 parts of bentonite, 3-10 parts of cement and 10-25 parts of water. The desulfurization and denitrification solid particles disclosed by the invention have relatively high breakthrough sulfur capacity and breakthrough nitrate capacity, and are relatively high in strength.

Description

Technical field [0001] The present invention relates to a desulfurization and denitrification of solid particles and preparation method and use thereof, and particularly relates to a method for dry desulfurization of flue gas desulfurization and denitration denitration solid particles and preparation method and application. Background technique [0002] Modern industrial production, such as flue gas chemical industry, metallurgy, electricity and other fields contain large amounts of discharged SO 2 And NO. These sulfur oxides or nitrogen oxides, if not promptly and effectively treated will increase soil acidification, aqueous, destruction of the ecological balance. [0003] CN107485990A discloses a desulfurizing and denitrating agent and its production process. The desulfurizing and denitrating agent comprising: MgO, CaO, SiO 2 , V 2 O 5 , Fe 2 O 3 CEO 2 , CoO, Co 2 O 3 Al 2 O 3 Mno 2 And KMnO 4 , Mixing these raw materials to obtain a uniform desulfurizing and denitrating agent....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/82B01D53/60
CPCB01D53/82B01D53/60Y02A50/20
Inventor 王春霞张焜魏闯
Owner ZHONGJING ENVIRONMENTAL TECH CO LTD
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