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Desulfurization and denitrification agent, preparation method and application thereof

A desulfurization and denitrification technology, applied in the field of nanoscale desulfurization and denitration agents, can solve the problems of low utilization rate, complex process, high operating cost, etc., and achieve the effect of increasing specific surface area, improving adsorption function, and low operating cost

Active Publication Date: 2012-12-19
ZHONGJING ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main obstacle affecting its industrial application is the loss of chelate in the reaction process and the difficulty in regeneration of metal chelate, low utilization rate, resulting in high operating costs
[0010] Due to the current foreign joint or integrated desulfurization and denitrification technologies have disadvantages such as complex process, large floor area, high operating cost, high single efficiency and low combined efficiency, so the development and operation are simple, low operating cost, high efficiency, stable system and simultaneous desulfurization and denitrification Technology has become one of the important directions for the research and development of coal-fired flue gas purification technology

Method used

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  • Desulfurization and denitrification agent, preparation method and application thereof
  • Desulfurization and denitrification agent, preparation method and application thereof
  • Desulfurization and denitrification agent, preparation method and application thereof

Examples

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preparation example Construction

[0067]

[0068] The present invention also provides a preparation method of desulfurization and denitrification agent, which comprises the following steps:

[0069] (1) Prepare the following components to make a mixture;

[0070] (2) Making the prepared mixture into a nanoscale desulfurization and denitrification agent.

[0071] The components include MgO, SiO 2 , CaO, Fe 2 o 3 、Al 2 o 3 , CuO and MnO 2 ; Optionally, also include KMnO 4 .

[0072] According to the preparation method of the present invention, preferably, comprises the following steps:

[0073] (1) prepare the mixture of the above components in proportion;

[0074] (2) Making the prepared mixture into a nanoscale desulfurization and denitrification agent.

[0075] Among the desulfurization and denitrification agents include:

[0076] MgO is 40~50 parts by weight, preferably 45~48 parts by weight;

[0077] CaO is 0.1 to 1 part by weight, preferably 0.5 to 0.8 parts by weight;

[0078] SiO 2 10 to...

Embodiment 1

[0155] (1) Modulation of desulfurization and denitrification agent:

[0156] According to the following formula, mix the components evenly to obtain the desulfurization and denitrification agent.

[0157]

[0158] Put the metal-based oxide desulfurization and denitrification agent prepared according to the ratio in the above table into a high-energy ball mill and grind it into nanoscale specifications within the range of 10nm to 60nm, add water to the desulfurization and denitrification agent nano powder after machine grinding, stir evenly, and then add Enter the industrial thickener HPMC (hydroxypropyl methylcellulose), send the mixed slurry into a single-chamber furnace, and roast it at a temperature range of 600°C to 800°C for 1.5 to 2 hours to obtain a desulfurization and denitrification special Mixture.

[0159] (2) Removal of SO using nanoscale desulfurization and denitrification agents 2 , NO X craft

[0160] 1. Pulping:

[0161] The prepared desulfurization and...

Embodiment 2

[0182] According to the following formula, mix the components evenly to obtain the desulfurization and denitrification agent.

[0183]

[0184]

[0185] Compared with Example 1, Example 2 reduces MgO content by 5 parts by weight, reduces MnO 2 2 parts by weight, increase SiO 2 , Fe 2 o 3 5 parts by weight, increase KmnO 4 2 parts, other conditions are constant, and technological process is also identical with embodiment 1, obtains following parameter list:

[0186] Table 3: Monitoring results of waste gas emission from sintering machine desulfurization facilities

[0187]

[0188] The desulfurization efficiency reaches 96.9%, and the denitrification efficiency reaches 93.1%.

[0189] At the same time, the consumption parameters of various consumables are as follows:

[0190] Various experimental data

[0191] 1

[0192] The consumption of water, electricity and desulfurization agent is lower than that of the conventional desulfurization system, but ...

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Abstract

The invention discloses a desulfurization and denitrification agent, a preparation method and application thereof. The desulfurization and denitrification agent is a nanometer material and comprises the following components: MgO, SiO2, CaO, Fe2O3, Al2O3, CuO and MnO2. Preferentially, the desulfurization and denitrification agent also comprises a strong oxidant KMnO4. By using the nanometer desulfurization and denitrification agent disclosed by the invention, NOX can be synchronously removed during a flue gas desulfurization process, and the desulfurization and denitrification efficiency is high.

Description

technical field [0001] The invention relates to a nano-scale desulfurization and denitrification agent, its preparation method and its application in flue gas purification, especially suitable for SO2-containing gas produced after industrial coal combustion. 2 , NO X Simultaneous desulfurization and denitrification application of flue gas with equal components. Background technique [0002] The atmosphere is the most basic element of life for human beings to survive. However, sulfur dioxide (SO 2 ), nitrogen oxides (NO X ) and particulate matter, SO 2 and NO X It is the two most important air pollutants and the main cause of acid rain. At the same time NO X It is also a substance that causes environmental problems such as ozone layer depletion and photochemical smog. These have become important factors restricting social and economic development, and have aroused widespread concern of people from all over the world. [0003] Scientists and commercial organizations in...

Claims

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Application Information

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IPC IPC(8): B01D53/80B01D53/86B01D53/02B01D53/60B01J20/10B01J20/30B01J23/889
CPCY02A50/20
Inventor 童裳慧
Owner ZHONGJING ENVIRONMENTAL TECH CO LTD
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