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

AI Technical Summary

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 fl

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

Experimental program
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Example Embodiment

[0067]

[0068] The present invention also provides a method for preparing a desulfurization and denitrification agent, which includes the following steps:

[0069] (1) The following components will be formulated into a mixture;

[0070] (2) The prepared mixture is made into a nano-level 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, it also includes KMnO 4 .

[0072] The preparation method according to the present invention preferably includes the following steps:

[0073] (1) Prepare a mixture of the above components according to the ratio;

[0074] (2) The prepared mixture is made into a nano-level desulfurization and denitrification agent.

[0075] The desulfurization and denitrification agent includes:

[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 part by weight;

[0078] SiO 2 10-20 parts by weight, pre...

Example Embodiment

[0154] Example 1

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

[0156] Mix the components uniformly according to the following formula to obtain the desulfurization and denitrification agent.

[0157]

[0158] The metal-based oxide desulfurization and denitrification agent prepared according to the above table ratio is sent to a high-energy ball mill to be ground into nanometer specifications in the range of 10nm to 60nm. The desulfurization and denitrification agent nanopowder after milling is added to water and mixed evenly. Into the industrial thickener HPMC (Hydroxypropyl Methyl Cellulose), the mixed slurry material is sent to a single-chamber furnace and roasted at a temperature range of 600°C to 800°C for 1.5 to 2 hours to obtain a special purpose for desulfurization and denitration Mixing agent.

[0159] (2) Use nano-scale desulfurization and denitrification agent to remove SO 2 , NO X Craft

[0160] 1. Pulping:

[0161] The prepared desulfurization an...

Example Embodiment

[0181] Example 2

[0182] Mix the components uniformly according to the following formula to obtain the desulfurization and denitrification agent.

[0183]

[0184]

[0185] Compared with Example 1, Example 2 reduces the content of MgO by 5 parts by weight and reduces MnO 2 2 parts by weight, increase SiO 2 , Fe 2 O 3 5 parts by weight, add KmnO 4 2 copies, other conditions remain unchanged, the process is also the same as in Example 1, and the following parameter table is obtained:

[0186] Table 3: Monitoring results of exhaust gas emissions from desulfurization facilities of sintering machines

[0187]

[0188] The desulfurization efficiency reaches 96.9%, and the denitration 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 desulfurizer is lower than that of conventional desulfurization system, but the consumption ...

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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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