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Denitration agent for flue gas denitrification as well as preparation method and application of denitration agent

A technology of denitration agent and denitration reactor, which is applied in the field of denitration agent and its preparation for denitrification from flue gas, to achieve the effects of improving efficiency, simple operation process, reducing energy consumption and cost

Inactive Publication Date: 2015-12-02
田红景
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no report on the application of chemical chain technology in the field of flue gas denitrification

Method used

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  • Denitration agent for flue gas denitrification as well as preparation method and application of denitration agent
  • Denitration agent for flue gas denitrification as well as preparation method and application of denitration agent
  • Denitration agent for flue gas denitrification as well as preparation method and application of denitration agent

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preparation example Construction

[0034] A preparation method of a denitrification agent for denitrification from flue gas, the preparation process comprising the following steps:

[0035](1) Prepare the reaction solution. Take calcium hydroxide and yttrium hydroxide powders with a particle size in the range of 0.5-500 μm, dissolve them in 40-200ml glycerol to obtain a first solution, and the Y / Ca molar ratio in the first solution is in the range of 0.1-2 In the solution, the sum of the molar concentrations of Y ions and Ca ions in the solution is 0.01-10mol / L. Place the solution in an ultrasonic generator and sonicate for 0.5-5h under the condition of 200-600W ultrasonic power, so that the calcium hydroxide and yttrium hydroxide are completely dissolved;

[0036] (2) Dipping. Pour titanium dioxide, attapulgite clay or montmorillonite particles with a particle size in the range of 0.6-300 μm as an inert carrier into a beaker, pour the first solution in which calcium hydroxide and yttrium hydroxide powder are...

Embodiment 1

[0042] The invention provides a method for removing NO from flue gas x The preparation method of denitration agent, comprises the following steps:

[0043] 1. Prepare the reaction solution: put 1.0g of calcium hydroxide particles and 0.3g of yttrium hydroxide particles in a beaker, add 30ml of glycerol to dissolve to obtain the first solution, put it in an ultrasonic generator and ultrasonicate for 2 hours under the condition of 300W ultrasonic power .

[0044] 2. Impregnation: After the calcium hydroxide and yttrium hydroxide are completely dissolved, pour the solution into 4 g of titanium dioxide particles with a particle size in the range of 0.6-300 μm. Also placed in an ultrasonic generator and ultrasonicated for 0.5h under the condition of 300W ultrasonic power, can realize the uniform impregnation of ions in the solution on the surface of the carrier.

[0045] 3. Add the reaction solution dropwise: Dissolve 1.5g of thial in 70ml of glycerol, and add dropwise in two way...

Embodiment 2

[0049] The invention provides a method for removing NO from flue gas x The preparation method of denitration agent, comprises the following steps:

[0050] 1. Prepare the reaction solution: Take 2.0g of calcium hydroxide particles and 0.7g of yttrium hydroxide particles, put them in a beaker and add 30ml of glycerol to dissolve them, put them in an ultrasonic generator and ultrasonicate for 1h under the condition of 300W ultrasonic power.

[0051] 2. Impregnation: After the calcium hydroxide and yttrium hydroxide are completely dissolved, pour 10g of titanium dioxide particles with a particle size in the range of 0.6-300μm as an inert carrier, and also place it in an ultrasonic generator and ultrasonicate for 0.5h under the condition of 300W ultrasonic power .

[0052] 3. Drop reaction solution: Take 3.5g of thial and dissolve it in 70ml of glycerol, drop the solution into the inert carrier impregnated with calcium hydroxide solution at a rate of 1.5ml / s. Stir continuously u...

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Abstract

The invention discloses a denitration agent for flue gas denitrification as well as a preparation method and an application of the denitration agent. According to the denitration agent and the preparation method, titanium dioxide, attapulgite clay or imvite particles are adopted as an inert carrier, calcium hydroxide and yttrium hydroxide are dissolved into glycerol so that calcium hydroxide and yttrium hydroxide react with a sulphur source so as to generate denitration agent particles; the denitration agent particles react with NOx gas in flue gas in a denitration reactor, so as to reduce the NOx gas into non-toxic and harmless N2 gas, after reaction, the denitration agent is fluidized and then enters into another reactor to react with gasified synthetic gas inside the reactor, so as to be regenerated into denitration agent particles with denitrification property, then the denitration agent particles return to the denitration reactor. The denitration agent as well as the preparation method and the application thereof have the advantages that the preparation process is simple in technology, strong in controllability, safe and reliable, and free of secondary pollution, the prepared denitration agent is high in denitration efficiency, and the technical problems that in the denitration process in the prior art, the catalyst is high in price and difficult to recycle, and the like are solved.

Description

technical field [0001] The invention belongs to the technical field of environmental protection for treating flue gas containing nitrogen oxides, and relates to a method for capturing NO from industrial flue gas x The invention relates to a denitrification agent particle for harmless treatment of gas, in particular to a denitrification agent for denitrification from flue gas and its preparation method and application. Background technique [0002] In my country's coal consumption, 80% of coal is directly burned as power coal, and there are a lot of pollutants such as sulfur oxides, nitrogen oxides and carbon dioxide in the combustion flue gas. At present, my country has achieved remarkable results in the control of sulfur dioxide and dust. In 2010, the national sulfur dioxide and dust emissions were 21.851 million tons and 8.291 million tons respectively, a decrease of 1.3% and 2.1% compared with 2009. However, in 2010, the national nitrogen oxide emissions increased by 9....

Claims

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Application Information

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IPC IPC(8): B01D53/82B01D53/56B01D53/96
Inventor 田红景昌晶
Owner 田红景
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