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Dry simultaneous desulfurization/denitrification apparatus for exhaust gas

A desulfurization, denitrification and denitrification technology, which is applied in the direction of gas treatment, dispersed particle separation, membrane technology, etc., can solve the problems of low denitrification rate and no consideration of sulfur oxide removal, etc., and achieve the effect of low price

Inactive Publication Date: 2012-10-17
GIFU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] However, this device 110, that is, the invention described in Patent Document 4, has a denitrification rate as low as about 60% in the practical range, that is, under the condition that the oxygen concentration in the exhaust gas is 5%, and further improvement is required.
In addition, the removal of sulfur oxides contained in the exhaust gas at the same time as nitrogen oxides, that is, desulfurization

Method used

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  • Dry simultaneous desulfurization/denitrification apparatus for exhaust gas
  • Dry simultaneous desulfurization/denitrification apparatus for exhaust gas
  • Dry simultaneous desulfurization/denitrification apparatus for exhaust gas

Examples

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Effect test

Embodiment 1

[0057] figure 1 It is a diagram conceptually showing an example (Example 1) of the dry-type simultaneous desulfurization and denitrification device for exhaust gas of the present invention, (a) is a longitudinal sectional view thereof, (b) is a transverse sectional view of main parts thereof, and (c) is a rotating blade The side view of, (d) is the transverse sectional view of rotating blade; figure 2 means it has figure 1 The overall composition diagram of an example of a complete set of combustion equipment for a dry simultaneous desulfurization and denitrification device for exhaust gas; image 3 (a) is expressed in figure 1 In the performance test results of the dry-type simultaneous desulfurization and denitrification device for exhaust gas, the chart of the relationship between the applied voltage and the oxygen concentration in the exhaust gas and the denitration rate, (b) is a chart showing the relationship between the applied voltage and the oxygen concentration...

Embodiment 2

[0091] Figure 5 It is a figure conceptually showing another example (Example 2) of the dry-type simultaneous desulfurization and denitrification device for exhaust gas of the present invention, (a) is a longitudinal sectional view thereof, (b) is a AA sectional view of (a), and (c) is BB sectional view of (b), Figure 6 means it has Figure 5 The overall configuration diagram of an example of the combustion device of the dry simultaneous desulfurization and denitrification device for exhaust gas.

[0092] and figure 1 Compared with the dry simultaneous desulfurization and denitrification device 30, Figure 5 The difference between the shown dry-type simultaneous desulfurization and denitrification device 30A for exhaust gas is that the desulfurization radical generating mechanism 23 is separately installed from the rotary denitrification radical generating mechanism 22A, and although it is installed opposite to the rotary denitrifying radical generating mechanism 22A The...

Embodiment 3

[0104] Figure 7 (a) is an overall configuration diagram showing an example of an incineration (combustion) plant equipped with another example (Example 3) of the simultaneous desulfurization and denitration device for exhaust gas of the present invention, and (b) is an installation part of the plant enlarged sectional view of the .

[0105] and figure 2 Compared with the complete incineration (combustion) plant 40, the difference is that the incinerator or burner 9A of the incineration (combustion) plant 40B is vertical, and a plasma is also provided near the exit of the incinerator or burner 9A itself. Bulk reactor 11B. Therefore, the raw material supply pipe 13 for desulfurization and the raw material supply pipe 14 for denitration are connected not only to the plasma reactor 11 but also to the plasma reactor 11B.

[0106] Additionally, with figure 1 In this plasma reactor 11B, although the rotary denitrification radical generating mechanism 22 and the desulfurizing r...

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Abstract

To provide a dry simultaneous desulfurization / denitrification apparatus for exhaust gas that can remove any sulfur oxides and nitrogen oxides contained in exhaust gas simultaneously with high efficiency and that is compact and inexpensive. There is provided dry simultaneous desulfurization / denitrification apparatus for exhaust gas (30) capable of removing any sulfur oxides and nitrogen oxides contained in exhaust gas (EG) by the use of radical chain reaction, characterized by including not only swirling denitrification radical generation means (22) for converting to radicals a material for denitrification while swirling in plasma reactor (11) composed of a pair of electrodes to thereby produce denitrification radicals (RN) but also desulfurization radical generation means (6) for converting a material for desulfurization to radicals to thereby produce desulfurization radicals, which means (6) is disposed at a position under influence from the swirling denitrification radical generation means (22).

Description

technical field [0001] The invention relates to a dry-type simultaneous desulfurization and denitrification device for exhaust gas, which is used to treat exhaust gas discharged from incinerators or combustion furnaces, exhaust gas from ship engines, or exhaust gas from diesel engine power generation, etc., and use denitration free radicals and desulfurization free radicals to remove combustion Sulfur oxides (SO 2 ) and nitrogen oxides (NO). Background technique [0002] When coal, petroleum, general waste, industrial waste, woody biomass, etc. are burned, sulfur oxides and nitrogen oxides derived from sulfur and nitrogen contained in the fuel are produced. Due to their impact on the environment or health, their discharge is limited. In the past, in order to treat exhaust gas containing sulfur oxides or nitrogen oxides, catalytic denitrification (SCR) using ammonia and catalysts, and wet desulfurization (FGD) using limestone were mainly used in power industry boilers or ge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/60B01D53/34B01D53/74
CPCB01D2257/404B01D2257/302B01D53/32B01D2257/406B01D2259/818
Inventor 神原信志
Owner GIFU UNIVERSITY