Desulfurization denitration method

A technology of desulfurization and denitrification, desulfurization tower, applied in the field of synchronous desulfurization and denitrification, desulfurization and denitrification, can solve the problems of high single efficiency, large floor area, low joint efficiency, etc., and achieve the effect of improving efficiency, low operating cost and stable operation

Active Publication Date: 2012-12-26
ZHONGJING ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 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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preparation example Construction

[0080] In the present invention, the preparation method of nano-agent desulfurization and denitrification agent comprises the following steps:

[0081] (1) Prepare the following components to make a mixture;

[0082] (2) Making the prepared mixture into a nanoscale desulfurization and denitrification agent.

[0083] Preferably, the components include MgO, SiO 2 , CaO, Fe 2 o 3 、Al 2 o 3 , CuO and MnO 2 ; Optionally, also include KMnO 4 .

[0084] According to the preparation method of the present invention, preferably, comprises the following steps:

[0085] (1) prepare the mixture of the above-mentioned components according to the above-mentioned ratio;

[0086] (2) Making the prepared mixture into a nanoscale desulfurization and denitrification agent.

[0087] In the present invention, preferably, step (2) includes the following steps:

[0088] ① pulverizing the mixture into nanoscale powder;

[0089] ② preparing the nano-scale powder into a paste-like substance; ...

Embodiment 1

[0131] (1) Modulation of desulfurization and denitrification agent:

[0132] According to the following formula, mix the components evenly to obtain the desulfurization and denitrification agent.

[0133]

[0134] 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 agent .

[0135] (2) Removal of SO using nanoscale desulfurization and denitrification agents 2 , NO X craft

[0136] 1. Pulping:

[0137] The prepared desulfurization and denitrif...

Embodiment 2

[0158] According to the following formula, mix the components evenly to obtain the desulfurization and denitrification agent.

[0159]

[0160]

[0161] 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:

[0162] Table 3: Monitoring results of waste gas emission from sintering machine desulfurization facilities

[0163]

[0164] The desulfurization efficiency reaches 96.9%, and the denitrification efficiency reaches 93.1%.

[0165] At the same time, the consumption parameters of various consumables are as follows:

[0166] Various experimental data

[0167] 1 power consumption Spend 158 2 Water Consumption t / h 20 3 Consumption of desulfurization and denitrification agent...

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Abstract

The invention discloses a desulfurization denitration method which utilizes nano-scale desulfurization denitration agent to react with flue gas and remove sulfur dioxide (SO2) and nitrogen oxides (NOx); and arranges an oxygen gas regulator at a flue gas section of 125-145 DEG C before the flue gas enters a desulfurization denitration device end, to control oxygen content within 8-15 vt%. The inventive desulfurization denitration method combines the nano-scale desulfurization denitration agent with the oxygen gas regulator, to realize little desulfurization denitration agent consumption, high desulfurization denitration efficiency, comprehensive desulfurization efficiency above 96% and comprehensive denitration efficiency above 85%.

Description

technical field [0001] The invention relates to a method for desulfurization and denitrification, which belongs to the field of flue gas purification. 2 , NO X Synchronous desulfurization and denitrification of flue gas with components such as nitrogen oxides. 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 various countries have been committed to the technical research of desulfurization and denitrification...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/80B01D53/60B01D53/047
CPCY02A50/20
Inventor 童裳慧
Owner ZHONGJING ENVIRONMENTAL TECH CO LTD
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