CN111167297A - Oxidation method denitration treatment device - Google Patents
Oxidation method denitration treatment device Download PDFInfo
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- CN111167297A CN111167297A CN202010108969.6A CN202010108969A CN111167297A CN 111167297 A CN111167297 A CN 111167297A CN 202010108969 A CN202010108969 A CN 202010108969A CN 111167297 A CN111167297 A CN 111167297A
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- desulfurization
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/76—Gas phase processes, e.g. by using aerosols
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
Abstract
The invention discloses an oxidation denitration treatment device which comprises a wet desulfurization tower, and a first oxidation zone, a first absorption zone, a second oxidation zone and a second absorption zone which are sequentially arranged at intervals along the flowing direction of waste gas. According to the invention, the first oxidation area, the first absorption area, the second oxidation area and the second absorption area are arranged, namely, the oxidation performance of ozone and a liquid catalyst is utilized to oxidize NO in the flue gas into a high-valence state easily-absorbed form, and then the alkaline characteristic of a desulfurizer is utilized to carry out the synergistic treatment of desulfurization and denitration, so that the integrated function is realized, the original desulfurization tower is slightly modified, the requirements of ultralow emission can be well applied to desulfurization and denitration of sintering flue gas, and the modification difficulty and the operation cost are also reduced.
Description
Technical Field
The invention relates to the technical field of flue gas treatment environmental protection equipment, in particular to an oxidation denitration treatment device.
Background
The smoke pollutants of the head of the sintering machine are important pollutant sources in metallurgical waste gas, in recent years, the nation pays particular attention to the pollutant treatment in the field of metallurgy, sulfur oxides, nitrogen oxides, particulate matters and the like are generated in the production process of the sintering machine, the environment of our life is seriously harmed, and the problems of acid rain, haze and the like are frequent. In order to deal with the environmental impact caused by the production of the sintering machine, the national environmental protection department issues a guide standard for the flue gas treatment of the head of the sintering machine, wherein the treatment requirement is further strict, the guide standard makes clear requirements on the emission concentration of pollutants in the flue gas of the head of the sintering machine, and ultralow emission limit values are implemented for an environment sensitive area, namely NOx in the flue gas is less than 50mg/m3, SO2 is less than 35mg/m3, and particulate matters are less than 10mg/m 3. Most sintering machines have all been disposed wet flue gas desulfurization at present, add denitrification facility on this basis, some directly reform transform original wet flue gas desulfurization into dry flue gas desulfurization, join in marriage the SCR denitration, but this kind of technology needs to carry out the heat transfer to the flue gas and heaies up, need consume a large amount of gas as the heat source of heating flue gas, and the running cost is high, and the maintenance degree of difficulty is big.
Disclosure of Invention
The invention aims to provide an oxidation denitration treatment device which realizes integration of desulfurization and denitration by using multiple forms of oxidants to carry out series denitration and cooperatively treat NOx in flue gas, aiming at the defects and shortcomings in the prior art.
In order to achieve the purpose, the invention provides the following scheme: the invention provides an oxidation denitration treatment device, which comprises a wet desulfurization tower, and a first oxidation area, a first absorption area, a second oxidation area and a second absorption area which are sequentially arranged at intervals along the flowing direction of waste gas, wherein the upper part and the lower part of the wet desulfurization tower are respectively provided with a waste gas outlet and a waste gas inlet, the first oxidation area comprises an ozone generator for carrying out oxidation treatment on the waste gas passing through the waste gas inlet, the first absorption area comprises a desulfurization liquid source, a first desulfurization liquid delivery pump and a first desulfurization liquid spray pipe which are sequentially connected, the first desulfurization liquid spray pipe is positioned in the wet desulfurization tower, the second oxidation area comprises a liquid oxidant storage tank, an oxidant supply pump and an oxidant spray pipe which are sequentially connected, the oxidant spray pipe is positioned in the wet desulfurization tower, and the second absorption area comprises the desulfurization liquid source, the second oxidation liquid spray pipe and the second oxidation liquid spray pipe which are sequentially connected, The second desulfurization liquid conveying pump and the second desulfurization liquid spray pipe are positioned in the wet desulfurization tower.
Preferably, the waste gas inlet is connected with a waste gas source through an air inlet pipeline, the ozone generator is communicated with the air inlet pipeline, and a gap is formed between the connection part and the waste gas inlet.
Preferably, the desulfurization solution source comprises an external desulfurization solution source and/or an internal desulfurization solution source, and when the desulfurization solution source is only the external desulfurization solution source, the first desulfurization solution delivery pump and the second desulfurization solution delivery pump are respectively communicated with the external desulfurization solution source; when the desulfurization solution source is only an inner desulfurization solution source, the inner desulfurization solution source is arranged at the bottom of an inner cavity of the wet desulfurization tower, and the first desulfurization solution delivery pump and the second desulfurization solution delivery pump are respectively communicated with the inner desulfurization solution source; when an external desulfurization liquid source and an internal desulfurization liquid source exist simultaneously, the first desulfurization liquid delivery pump and the second desulfurization liquid delivery pump are respectively communicated with the internal desulfurization liquid source, the external desulfurization liquid source is communicated with the internal desulfurization liquid source, or the first desulfurization liquid delivery pump and the second desulfurization liquid delivery pump are respectively communicated with the external desulfurization liquid source and the internal desulfurization liquid source, the external desulfurization liquid source is communicated with the internal desulfurization liquid source, or the first desulfurization liquid delivery pump and the second desulfurization liquid delivery pump are respectively communicated with the internal desulfurization liquid source and the external desulfurization liquid source, and the external desulfurization liquid source is communicated with the internal desulfurization liquid source.
Preferably, the spray ports of the first desulfurization solution spray pipe, the oxidant spray pipe and the second desulfurization solution spray pipe are all arranged downwards; the spraying areas of the first desulfurization solution spraying pipe, the oxidant spraying pipe and the second desulfurization solution spraying pipe cover the flowing area of the waste gas in the wet desulfurization tower.
Preferably, the second oxidation area further comprises an oxidant liquid accumulating tank, the oxidant liquid accumulating tank is arranged opposite to the spraying port of the oxidant spraying pipe, the opening area of the oxidant liquid accumulating tank is not smaller than the spraying area of the oxidant spraying pipe, a gap for waste gas to flow is formed between the oxidant liquid accumulating tank and the inner wall of the wet desulphurization tower, and the oxidant liquid accumulating tank is communicated with the liquid oxidant storage tank.
Preferably, an oxidant guide plate is arranged on the inner wall of the wet desulphurization tower, the oxidant guide plate is positioned above the oxidant liquid collecting tank, and a gap for waste gas to circulate is formed between the oxidant guide plate and the oxidant liquid collecting tank.
Preferably, the oxidant guide plate comprises an oxidant lower inclined plate and an oxidant upper inclined plate which are connected at an angle less than 180 °, the oxidant lower inclined plate and the oxidant upper inclined plate are both connected with the inner wall of the wet desulphurization tower, and a gap for waste gas to flow through is formed between the oxidant upper inclined plate and the oxidant liquid collecting tank.
Preferably, the second absorption area further comprises a desulfurization solution accumulation tank, the desulfurization solution accumulation tank is arranged opposite to the spray opening of the desulfurizer spray pipe, the opening area of the desulfurization solution accumulation tank is not smaller than the spray area of the desulfurizer spray pipe, a gap for waste gas to flow through is formed between the desulfurization solution accumulation tank and the inner wall of the wet desulfurization tower, and the desulfurization solution accumulation tank is communicated with the desulfurization solution source.
Preferably, a desulfurizer guide plate is arranged on the inner wall of the wet desulphurization tower, the desulfurizer guide plate is positioned above the desulphurization solution liquid accumulation tank, and a gap for waste gas circulation is formed between the desulfurizer guide plate and the desulphurization solution liquid accumulation tank.
Preferably, the desulfurizer guide plate comprises a lower desulfurizer inclined plate and an upper desulfurizer inclined plate which are connected at an angle smaller than 180 degrees, the lower desulfurizer inclined plate and the upper desulfurizer inclined plate are both connected with the inner wall of the wet desulfurization tower, and a gap for waste gas circulation is formed between the upper desulfurizer inclined plate and the desulfurizer liquid accumulation tank.
Compared with the prior art, the invention has the following beneficial effects:
the oxidation denitration treatment device provided by the invention has the advantages that the first oxidation area, the first absorption area, the second oxidation area and the second absorption area are arranged, namely, the oxidation performance of ozone and a liquid catalyst is utilized to oxidize NO in the flue gas into a high-valence state easily-absorbed form, the alkaline characteristic of a desulfurizer is utilized to carry out the synergistic treatment of desulfurization and denitration, the integrated function is realized, the original desulfurization tower is slightly modified, the device can be well applied to the desulfurization and denitration of sintering flue gas, the requirement of ultralow emission is realized, and the modification difficulty and the operation cost are also reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a process flow diagram of an oxidation denitration treatment apparatus according to the present invention;
wherein, 1, an ozone generator; 2. a wet desulfurization tower; 3. a first desulfurization liquid delivery pump; 4. a liquid oxidant storage tank; 5. an oxidant supply pump; 6. an oxidant liquid accumulating tank; 7. a desulfurizing liquid collecting tank; 8. a second desulfurization liquid delivery pump; 9. a first desulfurization liquid spray pipe; 10. an oxidant spray pipe; 11. a second desulfurization solution spray pipe; 12. an oxidant deflector; 13. a desulfurizer flow guide plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an oxidation denitration treatment device which realizes integration of desulfurization and denitration by using multiple forms of oxidants to carry out series denitration and cooperatively treat NOx in flue gas, aiming at the defects and shortcomings in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1, the present invention provides an oxidation denitration treatment apparatus, comprising a wet desulfurization tower 2, and a first oxidation area, a first absorption area, a second oxidation area and a second absorption area which are sequentially arranged at intervals along a flow direction of exhaust gas, wherein the upper part and the lower part of the wet desulfurization tower 2 are respectively provided with an exhaust gas outlet and an exhaust gas inlet, the first oxidation area comprises an ozone generator 1 for performing oxidation treatment on the exhaust gas passing through the exhaust gas inlet, the first absorption area comprises a desulfurization liquid source, a first desulfurization liquid delivery pump 3 and a first desulfurization liquid spray pipe 9 which are sequentially connected, the first desulfurization liquid spray pipe 9 is positioned in the wet desulfurization tower 2, the second oxidation area comprises a liquid oxidant storage tank 4, an oxidant supply pump 5 and an oxidant spray pipe 10 which are sequentially connected, the oxidant spray pipe 10 is positioned in the wet desulfurization tower 2, the second absorption area comprises a desulfurization liquid source, a second desulfurization liquid delivery pump 8 and a second desulfurization liquid spray pipe 11 which are sequentially connected, the second desulfurization solution spray pipe 11 is positioned in the wet desulfurization tower 2.
In the invention, the waste gas inlet is connected with a waste gas source through the air inlet pipeline, the ozone generator 1 is communicated with the air inlet pipeline, and an interval is arranged between the connection part and the waste gas inlet, so that the mixing degree of ozone and waste gas is improved, and the oxidation effect is enhanced.
The desulfurization liquid source comprises an outer desulfurization liquid source and/or an inner desulfurization liquid source, and when the desulfurization liquid source is only the outer desulfurization liquid source, the first desulfurization liquid delivery pump 3 and the second desulfurization liquid delivery pump 8 are respectively communicated with the outer desulfurization liquid source; when the desulfurization solution source is only the inner desulfurization solution source, the inner desulfurization solution source is arranged at the bottom of the inner cavity of the wet desulfurization tower 2, and the first desulfurization solution delivery pump 3 and the second desulfurization solution delivery pump 8 are respectively communicated with the inner desulfurization solution source; when an external desulfurization liquid source and an internal desulfurization liquid source exist simultaneously, the first desulfurization liquid delivery pump 3 and the second desulfurization liquid delivery pump 8 are respectively communicated with the internal desulfurization liquid source, the external desulfurization liquid source is communicated with the internal desulfurization liquid source, or the first desulfurization liquid delivery pump 3 and the second desulfurization liquid delivery pump 8 are respectively communicated with the external desulfurization liquid source and the internal desulfurization liquid source, the external desulfurization liquid source is communicated with the internal desulfurization liquid source, or the first desulfurization liquid delivery pump 3 and the second desulfurization liquid delivery pump 8 are respectively communicated with the internal desulfurization liquid source and the external desulfurization liquid source, and the external desulfurization liquid source is communicated with the internal desulfurization liquid source. When the inner desulfurization liquid source is arranged, the position of the waste gas inlet is higher than the liquid level of the inner desulfurization liquid source.
The spray ports of a first desulfurization liquid spray pipe 9, an oxidant spray pipe 10 and a second desulfurization liquid spray pipe 11 are all arranged downwards; the spraying areas of the first desulfurization solution spraying pipe 9, the oxidant spraying pipe 10 and the second desulfurization solution spraying pipe 11 cover the flow area of the exhaust gas in the wet desulfurization tower 2.
The second oxidation area also comprises an oxidant liquid accumulating tank 6, the oxidant liquid accumulating tank 6 is fixed in the wet desulphurization tower 2 (can be directly connected with the inner wall, can also be fixedly connected through other connecting modes, and is not particularly limited), the oxidant liquid accumulating tank 6 is arranged opposite to the spraying opening of the oxidant spraying pipe 10, the opening area of the oxidant liquid accumulating tank 6 is not smaller than the spraying area of the oxidant spraying pipe 10, a gap for waste gas to flow is formed between the oxidant liquid accumulating tank 6 and the inner wall of the wet desulphurization tower 2, and the oxidant liquid accumulating tank 6 is communicated with the liquid oxidant storage tank 4.
The inner wall of the wet desulphurization tower 2 is provided with an oxidant guide plate 12 (the oxidant guide plate 12 can be integrally formed with the oxidant liquid collecting tank 6 to form a structure as shown in the figure, and a hole for waste gas to flow is arranged between the oxidant guide plate 12 and the oxidant liquid collecting tank 6), the oxidant guide plate 12 is positioned above the oxidant liquid collecting tank 6, and a gap for waste gas to flow is arranged between the oxidant guide plate 12 and the oxidant liquid collecting tank 6.
The oxidant guide plate 12 of the present invention comprises an oxidant lower inclined plate and an oxidant upper inclined plate (the upper inclined plate plays a role of guiding the waste gas to the middle part) which are connected with each other at an angle less than 180 degrees, the oxidant lower inclined plate and the oxidant upper inclined plate are both connected with the inner wall of the wet desulphurization tower 2, and a gap for the waste gas to flow is arranged between the oxidant upper inclined plate and the oxidant liquid collecting tank 6.
The second absorption zone also comprises a desulfurization solution liquid accumulation tank 7, the desulfurization solution liquid accumulation tank 7 is fixed in the wet desulfurization tower 2 (can be directly connected with the inner wall, can also be fixedly connected through other connection modes, and is not specifically limited), the desulfurization solution liquid accumulation tank 7 is arranged opposite to the spray opening of the desulfurizer spray pipe, the opening area of the desulfurization solution liquid accumulation tank 7 is not smaller than the spray area of the desulfurizer spray pipe, a gap for waste gas to flow exists between the desulfurization solution liquid accumulation tank 7 and the inner wall of the wet desulfurization tower 2, and the desulfurization solution liquid accumulation tank 7 is communicated with a desulfurization solution source.
A desulfurizer guide plate 13 is arranged on the inner wall of the wet desulphurization tower 2 (the desulfurizer guide plate 13 can be integrally formed with the desulphurization solution liquid accumulation tank 7 to form a structure shown in the figure, a hole for waste gas to flow is arranged between the desulfurizer guide plate 13 and the desulphurization solution liquid accumulation tank 7), the desulfurizer guide plate 13 is positioned above the desulphurization solution liquid accumulation tank 7, and a gap for waste gas to flow is formed between the desulfurizer guide plate 13 and the desulphurization solution liquid accumulation tank 7.
The desulfurizer guide plate 13 comprises a lower desulfurizer inclined plate and an upper desulfurizer inclined plate which are connected at an angle of less than 180 degrees (the upper inclined plate plays a role of guiding waste gas to the middle part), the lower desulfurizer inclined plate and the upper desulfurizer inclined plate are both connected with the inner wall of the wet desulfurization tower 2, and a gap for the circulation of the waste gas is formed between the upper desulfurizer inclined plate and the desulfurizer liquid collecting tank.
The technological process integrating the technical scheme disclosed above is as follows: the ozone generator 1 is used for providing ozone with oxidizing property to oxidize NO in the original flue gas into NO2、N2O3And N2O5And the like, the part of the flue gas is absorbed by the desulfurizer sprayed by the first desulfurization liquid spray pipe 9 after entering the wet desulfurization tower 2, so that the first time is realizedThe desulfurization and denitrification process is the first reaction zone of the device. The flue gas after desulfurization and denitrification passes through the oxidant and oxidant liquid accumulating tank 6, the residual NOx is further oxidized into a high-valence state form through the oxidation of the liquid oxidant again, the liquid oxidant is sprayed down through the spraying layer and performs gas-liquid oxidation reaction with the flue gas to realize secondary oxidation, and the falling liquid oxidant returns to the oxidant storage tank through the oxidant liquid accumulating tank 6 for recycling. The oxidized flue gas passes through the desulfurization liquid accumulation tank to be subjected to desulfurization and denitrification reaction with the desulfurizer sprayed by the second desulfurization liquid spraying pipe 11 again, so that secondary removal of nitrogen oxide and sulfur dioxide is realized, and finally the ultralow emission requirement of NOx is met. Whole device has 2 oxidation zones and 2 absorption zones, the absorbent is alkaline desulfurizer, the denitration oxidant is ozone and liquid oxidant respectively, whole engineering transformation need not carry out large-scale change to former equipment, only need rise original desulfurizing tower, arrange liquid oxidant oxide layer and new desulfurization and spray the layer, it is less to reform transform, disposable input is lower, the form of wet flue gas desulfurization denitration simultaneously, need not additionally to heat the flue gas, reduce the consumption of gas, the cost of reduction operation that can be fine, equipment is less, the complexity of maintenance has been reduced. The method is very suitable for the existing treatment of desulfurization and denitrification of the sintering flue gas, and has good applicability.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. An oxidation denitration treatment device is characterized in that: the device comprises a wet desulphurization tower, and a first oxidation area, a first absorption area, a second oxidation area and a second absorption area which are sequentially arranged at intervals along the flowing direction of waste gas, wherein the upper part and the lower part of the wet desulphurization tower are respectively provided with a waste gas outlet and a waste gas inlet, the first oxidation area comprises an ozone generator for carrying out oxidation treatment on the waste gas passing through the waste gas inlet, the first absorption area comprises a desulphurization liquid source, a first desulphurization liquid delivery pump and a first desulphurization liquid spray pipe which are sequentially connected, the first desulphurization liquid spray pipe is positioned in the wet desulphurization tower, the second oxidation area comprises a liquid oxidant storage tank, an oxidant supply pump and an oxidant spray pipe which are sequentially connected, the oxidant spray pipe is positioned in the wet desulphurization tower, and the second absorption area comprises the desulphurization liquid source, the second desulphurization liquid delivery pump and the second desulphurization liquid spray pipe which are sequentially connected, and the second desulfurization liquid spray pipe is positioned in the wet desulfurization tower.
2. The oxidation-denitration treatment apparatus according to claim 1, characterized in that: the waste gas inlet is connected with a waste gas source through an air inlet pipeline, the ozone generator is communicated with the air inlet pipeline, and an interval is reserved between the connection part and the waste gas inlet.
3. The oxidation-denitration treatment apparatus according to claim 1, characterized in that: the desulfurization liquid source comprises an outer desulfurization liquid source and/or an inner desulfurization liquid source, and when the desulfurization liquid source is only the outer desulfurization liquid source, the first desulfurization liquid delivery pump and the second desulfurization liquid delivery pump are respectively communicated with the outer desulfurization liquid source; when the desulfurization solution source is only an inner desulfurization solution source, the inner desulfurization solution source is arranged at the bottom of an inner cavity of the wet desulfurization tower, and the first desulfurization solution delivery pump and the second desulfurization solution delivery pump are respectively communicated with the inner desulfurization solution source; when an external desulfurization liquid source and an internal desulfurization liquid source exist simultaneously, the first desulfurization liquid delivery pump and the second desulfurization liquid delivery pump are respectively communicated with the internal desulfurization liquid source, the external desulfurization liquid source is communicated with the internal desulfurization liquid source, or the first desulfurization liquid delivery pump and the second desulfurization liquid delivery pump are respectively communicated with the external desulfurization liquid source and the internal desulfurization liquid source, the external desulfurization liquid source is communicated with the internal desulfurization liquid source, or the first desulfurization liquid delivery pump and the second desulfurization liquid delivery pump are respectively communicated with the internal desulfurization liquid source and the external desulfurization liquid source, and the external desulfurization liquid source is communicated with the internal desulfurization liquid source.
4. The oxidation-denitration treatment apparatus according to claim 1, characterized in that: the spray ports of the first desulfurization liquid spray pipe, the oxidant spray pipe and the second desulfurization liquid spray pipe are all arranged downwards; the spraying areas of the first desulfurization solution spraying pipe, the oxidant spraying pipe and the second desulfurization solution spraying pipe cover the flowing area of the waste gas in the wet desulfurization tower.
5. The oxidation-denitration treatment apparatus according to claim 1, characterized in that: the second oxidation area further comprises an oxidant liquid accumulation tank, the oxidant liquid accumulation tank and a spraying opening of the oxidant spraying pipe are arranged oppositely, the opening area of the oxidant liquid accumulation tank is not smaller than the spraying area of the oxidant spraying pipe, a gap for waste gas to flow is formed between the oxidant liquid accumulation tank and the inner wall of the wet desulphurization tower, and the oxidant liquid accumulation tank is communicated with the liquid oxidant storage tank.
6. The oxidation-denitration treatment apparatus according to claim 5, characterized in that: and an oxidant guide plate is arranged on the inner wall of the wet desulphurization tower, the oxidant guide plate is positioned above the oxidant liquid accumulation tank, and a gap for the circulation of waste gas is formed between the oxidant guide plate and the oxidant liquid accumulation tank.
7. The oxidation-denitration treatment apparatus according to claim 6, characterized in that: the oxidant guide plate comprises an oxidant lower inclined plate and an oxidant upper inclined plate which are connected at an angle smaller than 180 degrees, the oxidant lower inclined plate and the oxidant upper inclined plate are both connected with the inner wall of the wet desulphurization tower, and a gap for waste gas to flow is formed between the oxidant upper inclined plate and the oxidant liquid collecting tank.
8. The oxidation-denitration treatment apparatus according to claim 1 or 7, characterized in that: the second absorption area further comprises a desulfurization solution accumulation tank, the desulfurization solution accumulation tank is opposite to the spraying opening of the desulfurizer spraying pipe, the opening area of the desulfurization solution accumulation tank is not smaller than the spraying area of the desulfurizer spraying pipe, a gap for waste gas to flow is formed between the desulfurization solution accumulation tank and the inner wall of the wet desulfurization tower, and the desulfurization solution accumulation tank is communicated with the desulfurization solution source.
9. The oxidation-denitration treatment apparatus according to claim 8, characterized in that: and a desulfurizer guide plate is arranged on the inner wall of the wet desulfurization tower and positioned above the desulfurization solution accumulation tank, and a gap for waste gas circulation is formed between the desulfurizer guide plate and the desulfurization solution accumulation tank.
10. The oxidation-denitration treatment apparatus according to claim 9, characterized in that: the desulfurizer guide plate comprises a lower desulfurizer inclined plate and an upper desulfurizer inclined plate which are connected at an angle smaller than 180 degrees, the lower desulfurizer inclined plate and the upper desulfurizer inclined plate are both connected with the inner wall of the wet desulfurization tower, and a gap for waste gas circulation is formed between the upper desulfurizer inclined plate and the desulfurizer liquid accumulation tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010108969.6A CN111167297A (en) | 2020-02-21 | 2020-02-21 | Oxidation method denitration treatment device |
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| CN202010108969.6A CN111167297A (en) | 2020-02-21 | 2020-02-21 | Oxidation method denitration treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112999844A (en) * | 2021-03-05 | 2021-06-22 | 合肥热电集团有限公司 | Coal-fired power plant flue gas desulfurization and denitrification integrated treatment system and method |
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2020
- 2020-02-21 CN CN202010108969.6A patent/CN111167297A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112999844A (en) * | 2021-03-05 | 2021-06-22 | 合肥热电集团有限公司 | Coal-fired power plant flue gas desulfurization and denitrification integrated treatment system and method |
| CN112999844B (en) * | 2021-03-05 | 2022-07-01 | 合肥热电集团有限公司 | Coal-fired power plant flue gas desulfurization and denitrification integrated treatment system and method |
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