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Desulfurization, denitrification and carbon reduction agent and preparation method and application thereof

A technology of desulfurization, denitrification, and carbon agent, which is applied in the direction of separation methods, chemical instruments and methods, and separation of dispersed particles. It can solve the problems that desulfurization, denitrification, and carbon reduction cannot be realized at the same time, and achieve good results, good performance, and high desulfurization efficiency.

Inactive Publication Date: 2010-11-17
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the effect of desulfurization, denitrification and carbon reduction in the clean coal preparations of the prior art, and to provide a desulfurization, denitrification and carbon reduction agent and its preparation method and application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of desulfurization, denitrification and carbon reducing agent: take the prepared gibberellin industrial waste residue and penicillin industrial waste residue, take a total of 10kg with a mass ratio of 1:1, add 15kg of the aqueous solution of Alcaligenes; wherein, the cell concentration is 1.2×10 3 pcs / mL~3.8×10 3 per mL, react for 3 days, and filter to obtain the filtrate.

[0027] The desulfurization, denitrification and carbon reduction agent is sprayed in the process before the flue gas fly ash capture of the power plant, and the desulfurization, denitrification and carbon reduction are carried out. Escape amount detection, Analytical Instruments, 2010(1): 87-94; carbon reduction measurement method: Bai Zesheng, a carbon dioxide gas detection method, sensor and maintenance system, 007(7): 105-107), its desulfurization, denitrification , carbon reduction effects were 90%, 65% and 55%.

Embodiment 2

[0029] The preparation of desulfurization, denitrification and carbon reducing agent: get 2kg of the filter residue obtained by filtering in Example 1, and add concentration of 10wt% Na with a mass ratio of 5:1. 4 P 2 o 7 and K 2 CO 3 Alkaline aqueous solution, in which Na 4 P 2 o 7 and K 2 CO 3The ratio of the mixture is 0.1:12, uniformly mixed and reacted, the pressure is 0.1Mpa, the temperature is 90°C, and the reaction time is 2 hours.

[0030] Via NDJ-1B rotary viscometer, HWY-10 multifunctional temperature-controllable circulating water bath, the viscosity measured at 90°C is 10500mPa.s.

[0031] The desulfurization, denitrification and carbon reduction agent and anthracite are molded into Φ25mm, H30 ellipsoidal briquettes at a mass ratio of 1.5:100 under a pressure of 25MPa.

[0032] After testing, the compressive strength is 406N / piece, the thermal stability is 87.0%, the desulfurization rate is 65%, the denitrification rate is 52%, and the CO reduction 2 Eff...

Embodiment 3

[0034] The preparation of desulfurization, denitrification and carbon reducing agent: get the filter residue 1kg obtained by filtering in Example 1, 7kg of Myxobacterium sulfate industrial waste residue, and add the Na concentration of 10wt% by mass ratio.1:7:2 4 P 2 o 7 and K 2 CO 3 The alkali aqueous solution is uniformly mixed and reacted, the pressure is 0.1Mpa, the temperature is 95°C, and the reaction time is 2 hours.

[0035] Via NDJ-1B rotary viscometer, HWY-10 multifunctional temperature-controllable circulating water bath, the viscosity measured at 95°C is 26300mPa.s.

[0036] The desulfurization, denitrification and carbon reduction agent is mixed with coke dust at a mass ratio of 1.8:100 to prepare molded coke.

[0037] The formed coke was heated in the KSS-1600 test electric furnace at a rate of 3°C to 5°C, and kept at 1100°C for 4.5 hours. The sulfur in the form coke was converted into H 2 The S form escapes, and after being absorbed by the reaction, it is t...

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Abstract

The invention discloses a desulfurization, denitrification and carbon reduction agent and a preparation method and an application thereof. The preparation method of the desulfurization, denitrification and carbon reduction agent comprises the following steps: carrying out reaction on bio-industrial waste residue for 2-4 days in water under the action of microbial bacteria for obtaining a mixed product, then filtering the mixed product, and taking filtrate, wherein the microbial bacteria comprise alcaligenes sp and one or more of the following microbial bacteria: penicillium sp, gibberella, colistin sulphate and microzyme; and the cell concentration of the microbial bacteria is 1.3 multiplied 102-8.9 multiplied by 103 / mL. Filter residue obtained after filtering the mixed product which is prepared by the raw material bio-industrial waste residue and / or the method is further reacted with water solution of alkali, thereby obtaining the solid desulfurization, denitrification and carbon reduction agent. The main raw materials of the desulfurization, denitrification and carbon reduction agent are waste materials in other fields, thereby having low cost, hardly increasing ash content in the preparation of gasification briquettes, further effectively realizing desulfurization, denitrification and carbon reduction, and having the same significant effects when being used for desulfurization, denitrification and carbon reduction of flue gas, formed coke or formed iron of electric power plants.

Description

technical field [0001] The invention relates to a desulfurization, denitrification and carbon reducing agent, a preparation method and application thereof. Background technique [0002] Coal is the main energy source in my country, but with the continuous development of coal mining mechanization, the yield of pulverized coal and high-sulfur coal is increasing year by year, but the supply of high-quality lump coal is in short supply. These low-quality varieties of coal affect gasification, coking, combustion, Raw material for ironmaking. [0003] To solve this problem, people began to study clean coal technology. Patent CN 200510110558.6 adds sodium silicate aqueous solution, bentonite and potassium chlorate to mixed coal powder to prepare a gasified briquette, but compared with the composition of pulverized coal, the gasified briquette has a lot of ash; patent CN 94112288.3 provides an active Sludge briquettes, in which activated sludge, white mud and lime are added as bind...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/84B01D53/60B01D53/62
CPCY02A50/20
Inventor 周霞萍张钊张义超杨建凯张傲袁宗英林匡飞王杰
Owner EAST CHINA UNIV OF SCI & TECH
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