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Desulfurizing, denitrifying and decoking synergic additive for fire coal and preparation method of additive

A synergistic additive, desulfurization and denitrification technology, applied in the field of desulfurization and denitrification, can solve the problems of poor desulfurization effect and low desulfurization rate, achieve huge economic and environmental benefits, reduce investment, and increase desulfurization efficiency.

Inactive Publication Date: 2014-04-16
高同柱
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The single solid desulfurization technology in combustion fails to solve the problem of sulfur fixation and secondary release in the high temperature area above 900 ° C, the desulfurization rate is low, and the desulfurization effect is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] A preparation method of a catalytic synergist, first adding copper nitrate, potassium permanganate, manganese dioxide, potassium nitrate, cerium nitrate, titanium dioxide, hexamethylenetetramine, and stirring for 20-60 minutes, and then Add ammonium nitrate and sodium perchlorate and stir for 10-30 minutes to mix evenly, and put it into a packaging bag. Among them, the catalytic synergist component contains mass percentage: copper nitrate 18%, potassium permanganate 12%, manganese dioxide 5%, potassium nitrate 10%, cerium nitrate 5%, titanium dioxide 30%, hexamethylenetetramine 15%, Ammonium nitrate 10%, sodium perchlorate 8%.

[0057] Without changing the current smoke exhaust process and equipment, only starting from the combustion of raw coal, according to the user burning less high-sulfur coal (sulfur content 2.5%), mixed with 3.0‰ (weight ratio) of catalytic synergist into the raw coal, input The boiler burns. After 30 days of operation, the desulfurization rate ...

Embodiment 2

[0061] A preparation method of a catalytic synergist, first adding copper nitrate, potassium permanganate, manganese dioxide, potassium nitrate, cerium nitrate, titanium dioxide, hexamethylenetetramine, and stirring for 20-60 minutes, and then Add ammonium nitrate and sodium perchlorate and stir for 10-30 minutes to mix evenly, and put it into a packaging bag. Among them, the catalytic synergist component contains mass percentage: copper nitrate 15%, potassium permanganate 10%, manganese dioxide 8%, potassium nitrate 10%, cerium nitrate 5%, titanium dioxide 25%, hexamethylenetetramine 10%, Ammonium nitrate 7%, sodium perchlorate 10%.

[0062] Without changing the current smoke exhaust process and equipment, only starting from the combustion of raw coal, according to the user burning less high-sulfur coal (sulfur content 2.8%), mixed with 3.8‰ (weight ratio) catalytic synergist into the raw coal, input The boiler burns. After 30 days of operation, the desulfurization rate is ...

Embodiment 3

[0066] A preparation method of a catalytic synergist, first adding copper nitrate, potassium permanganate, manganese dioxide, potassium nitrate, cerium nitrate, titanium dioxide, hexamethylenetetramine, and stirring for 20-60 minutes, and then Add ammonium nitrate and sodium perchlorate and stir for 10-30 minutes to mix evenly, and put it into a packaging bag. Among them, the catalytic synergist component contains mass percentage: copper nitrate 10%, potassium permanganate 10%, manganese dioxide 8%, potassium nitrate 10%, cerium nitrate 5%, titanium dioxide 15%, hexamethylenetetramine 10%, Ammonium nitrate 22%, sodium perchlorate 10%.

[0067] Without changing the current smoke exhaust process and equipment, only start with the combustion of raw coal, according to the user burning less high-sulfur coal (sulfur content 2.0%), mix the catalytic synergist with 3‰ (weight ratio) into the raw coal, and put in The boiler burns. After 25 days of operation, the desulfurization rate ...

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Abstract

The invention discloses a desulfurizing, denitrifying and decoking synergic additive for fire coal and a preparation method of the additive. The invention relates to the fields of desulfurizing and denitrifying, and particularly relates to a preparation method of an additive integrating desulfurization, denitrification, decoking and synergism in a process of combusting sulphur coal and coal. According to the additive and the preparation method disclosed by the invention, in an original coal combusting stage, a catalytic synergist which accounts for 0.1-0.8wt% of the total weight of the original coal is added into the fire coal, and meanwhile, a catalytic activating synergist which accounts for 0.02-0.2wt% of total weight of desulfuration slurry is further added into a slurry box of a desulfurization system. Under the premise of not changing an existing device, the catalytic activating synergist has the functions of saving coal, cleaning ash, decoking, desulfurizing and denitrifying to combustion of sulphur coal in a boiler. The catalytic activating synergist enhances the activity of lime stones in lime stone slurry and improves the desulfurizing efficiency as well as increases the denitrifying function, and meanwhile, the desulfurizing and denitrifying functions can reach or exceed national standards, so that the investment on selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR) denitrifying equipment is lowered, and huge economical benefit and environment-friendly benefit are obtained.

Description

technical field [0001] The invention relates to the field of desulfurization and denitrification, in particular to an additive manufacturing method which integrates desulfurization, denitrification, decoking and efficiency enhancement in the process of burning high-sulfur coal. Background technique [0002] At present, there is no combustion-supporting coal-saving, SO 2、 NO X The manufacturing methods of multiple functional additives such as emission reduction, dust removal and decoking, and single-function desulfurization technologies are as follows: [0003] (1) Desulfurization before combustion: The raw coal is desulfurized by centralized water washing, molding and other methods. The main problem is that the structural sulfur or organic sulfur in coal cannot be removed, and the cost is high. Especially the coal used in power plants cannot be adopted. [0004] (2) Flue gas desulfurization: mainly adopt flue gas desulfurization device. Existing problems are huge ...

Claims

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Application Information

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IPC IPC(8): C10L9/10
Inventor 高同柱路艳霞
Owner 高同柱
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