Dedusting and denitration active agent for coal-fired power plant, and preparation method, usage method and application thereof

A technology of coal-fired power plants and activators, applied in the direction of separation methods, use of liquid separation agents, chemical instruments and methods, etc., can solve problems such as catalyst poisoning, crystal particle size increase, and high cost

Active Publication Date: 2018-06-19
XIAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] Catalyst support TiO 2 The crystal form of the crystal is perovskite type, and the sintering temperature exceeds 450°C for a long time, it will transform into rutile type, resulting in an increase in the particle size of the crystal, a decrease in pore volume and pore size, and a decrease in the number of active catalysts, thereby reducing the catalyst activity.
[0018] (3) Catalyst poisoning
The cost of catalyst regeneration is 1 / 2 of the cost of purchasing a new catalyst, and the cost is still relatively large

Method used

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  • Dedusting and denitration active agent for coal-fired power plant, and preparation method, usage method and application thereof
  • Dedusting and denitration active agent for coal-fired power plant, and preparation method, usage method and application thereof
  • Dedusting and denitration active agent for coal-fired power plant, and preparation method, usage method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0095] The dedusting and denitrification active agent used in coal-fired power plants in this embodiment is made from the following raw materials in mass percentage: 10% sodium dodecylbenzenesulfonate solution, 0.06% fast penetrating agent T solution, 10% sodium chloride solution, ten percent The glycol solution is 1.8%, and the balance is tap water; the mass concentration of the sodium dodecylbenzenesulfonate solution is 0.6%, and the mass concentration of the sodium chloride solution is 10%.

[0096] The preparation method of the dedusting and denitrification active agent for the coal-fired power plant of this embodiment comprises the following steps:

[0097] Step 1. Measure 100mL of sodium dodecylbenzenesulfonate solution with a mass concentration of 0.6% at a normal temperature of 25°C and pour it into a 1000mL beaker;

[0098] Step 2. Measure 0.6mL of rapid penetrant T solution, add 50mL of tap water to the measured rapid penetrant T solution to dilute, and pour the dilu...

Embodiment 2

[0103] The dedusting and denitrification active agent used in coal-fired power plants in this embodiment is made from the following raw materials in mass percent: 8% sodium dodecylbenzenesulfonate solution, 0.15% fast penetrating agent T solution, 8% sodium chloride solution, ten The glycol solution is 1.2%, and the balance is tap water; the mass concentration of the sodium dodecylbenzenesulfonate solution is 0.5%, and the mass concentration of the sodium chloride solution is 8%.

[0104] The preparation method of the dedusting and denitrification active agent for the coal-fired power plant of this embodiment comprises the following steps:

[0105]Step 1. Measure 80mL of sodium dodecylbenzenesulfonate solution with a mass concentration of 0.5% at a normal temperature of 30°C and pour it into a 1000mL beaker;

[0106] Step 2. Measure 1.5mL of rapid penetrant T solution, add 60mL of tap water to the measured rapid penetrant T solution to dilute, and pour the diluted rapid penetr...

Embodiment 3

[0111] The dedusting and denitration active agent used in coal-fired power plants in this embodiment is made from the following raw materials in mass percentage: 15% sodium dodecylbenzenesulfonate solution, 0.1% fast penetrating agent T solution, 12% sodium chloride solution, ten The glycol solution is 2.5%, and the balance is tap water; the mass concentration of the sodium dodecylbenzenesulfonate solution is 0.7%, and the mass concentration of the sodium chloride solution is 12%.

[0112] The preparation method of the dedusting and denitrification active agent for the coal-fired power plant of this embodiment comprises the following steps:

[0113] Step 1. Measure 150mL of sodium dodecylbenzenesulfonate solution with a mass concentration of 0.7% at a normal temperature of 20°C and pour it into a 1000mL beaker;

[0114] Step 2. Measure 1mL of rapid penetrant T solution, add 35mL of tap water to the measured rapid penetrant T solution to dilute, pour the diluted rapid penetrant...

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Abstract

The invention discloses a dedusting and denitration active agent for a coal-fired power plant. The dedusting and denitration active agent is prepared from a sodium dodecylbenzenesulfonate solution, afast penetrant T solution, a sodium chloride solution and a dodecanol solution, with the balance being tap water, or from alkyl glycoside, the fast penetrant T solution, the sodium chloride solution and the dodecanol solution, with the balance being tap water. The invention also discloses a preparation method for the dedusting and denitration active agent applied to the coal-fired power plant, a usage method for the dedusting and denitration active agent, and a method for applying the dedusting and denitration active agent to regeneration of a denitration catalyst. The dedusting and denitration active agent of the invention can be used for dust removal of flue gas from the coal-fired power plant, is high in dust removal efficiency and low in use cost, can regenerate deactivated denitrationcatalysts to prolong the service life of the denitration catalysts, and has great significance to reduction in the operation cost of SCR systems.

Description

technical field [0001] The invention belongs to the technical field of dust removal and denitrification catalyst regeneration, and in particular relates to a dust removal and denitrification active agent for a coal-fired power plant, a preparation method, a use method and an application. Background technique [0002] The coal industry is an important supporting industry for the rapid development of the national economy in developing countries. my country is the largest developing country in the world, and it is also a large coal-producing and coal-consuming country. In 2015, the output of raw coal reached 3.75 billion tons, accounting for about 47% of the world's total coal production; the total consumption reached 3.965 billion tons, accounting for about 50% of the world's total coal consumption. Accounted for around 70% and 65%. According to the forecast of the Chinese Academy of Sciences, based on the current energy demand, my country's total coal consumption in 2030 wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D47/06B01D53/86B01D53/90B01D53/56B01D53/96B01J38/48
CPCB01D47/06B01D53/8625B01D53/90B01D53/96B01J38/48
Inventor 张蕾文欣
Owner XIAN UNIV OF SCI & TECH
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