CN216677683U - Be used for steel rolling heating furnace flue gas to unite heat transfer intensification SOx/NOx control device - Google Patents
Be used for steel rolling heating furnace flue gas to unite heat transfer intensification SOx/NOx control device Download PDFInfo
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- CN216677683U CN216677683U CN202220237324.7U CN202220237324U CN216677683U CN 216677683 U CN216677683 U CN 216677683U CN 202220237324 U CN202220237324 U CN 202220237324U CN 216677683 U CN216677683 U CN 216677683U
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Abstract
The utility model discloses a combined heat exchange temperature rise desulfurization and denitrification device for steel rolling heating furnace flue gas, and relates to the field of desulfurization and denitrification treatment of steel rolling heating furnace flue gas. According to the utility model, the smoke on the air smoke side and the smoke on the air smoke side are subjected to combined heat supplementing and temperature rise, the temperature of two paths of smoke after temperature rise is stable, the temperature rise system is convenient to control, the system is energy-saving and stable, and sulfur dioxide, particulate matters and nitrogen oxides in the smoke can be effectively removed.
Description
Technical Field
The utility model relates to the field of desulfurization and denitrification treatment of steel rolling heating furnace flue gas, in particular to a flue gas combined heat exchange temperature rise desulfurization and denitrification device for a steel rolling heating furnace.
Background
The steel rolling heating furnace is key equipment in the steel rolling process, harmful substances such as particulate matters, SO2, NOx and the like can be generated in the production process of the steel rolling heating furnace, the pollution to the surrounding environment is caused, the environmental emission standard is more and more strict, the pollution treatment strength of the state is continuously increased, the treatment of the smoke of the steel rolling heating furnace is formally proposed at present, the emission requirement of China on pollutants generated in the steel industry is more strict according to the requirement of the opinion on promoting and implementing ultra-low emission in the steel industry, and the small-average values of the emission concentrations of the particulate matters, the sulfur dioxide and the nitrogen oxides of the smoke are respectively not higher than 10 mg/cubic meter, 35 mg/cubic meter and 50 mg/cubic meter, SO that the steel rolling heating furnace smoke pollutants are extremely important to be efficiently purified.
The existing flue gas combined heat exchange heating desulfurization and denitrification device for the steel rolling heating furnace cannot fully utilize the heat of waste heat flue gas, and then the technical problem that redundant pollutants are generated in the process of burning the gas in the heat supplementing assembly is solved.
SUMMERY OF THE UTILITY MODEL
Based on the above, the utility model aims to provide a flue gas combined heat exchange heating, desulfurization and denitrification device for a steel rolling heating furnace, so as to solve the technical problems that the heat of waste heat flue gas cannot be fully utilized and redundant pollutants are generated in the combustion of the gas in a heat supplementing assembly in the conventional flue gas combined heat exchange heating, desulfurization and denitrification device for the steel rolling heating furnace.
In order to achieve the purpose, the utility model provides the following technical scheme: a flue gas combined heat exchange temperature rise desulfurization and denitrification device for a steel rolling heating furnace comprises a soot side component and an air flue side component, wherein the soot side component comprises a soot side primary heat exchange component, a soot side spraying and uniform distribution component, a soot side SDS (sodium dodecyl sulfate) matched cloth bag dust removal component, a soot side secondary heat exchange component, a soot side denitrification reaction component, a soot side heat supplementing component, a soot draught fan and a soot chimney;
the raw flue gas at the soot side is communicated with a hot end inlet of a primary heat exchange assembly at the soot side through a pipeline, a hot end outlet of the primary heat exchange assembly at the soot side is communicated with an inlet of a uniform soot side spraying assembly, an outlet of the uniform soot side spraying assembly is communicated with an inlet of a matched cloth bag dust removal assembly at the soot side SDS, an outlet of the matched cloth bag dust removal assembly at the soot side SDS is communicated with a hot end inlet of a secondary heat exchange assembly at the soot side, a hot end outlet of the secondary heat exchange assembly at the soot side is communicated with an inlet of a denitration reaction assembly at the soot side, an outlet of the denitration reaction assembly at the soot side is communicated with a cold end inlet of the primary heat exchange assembly at the soot side, a cold end outlet of the primary heat exchange assembly at the soot side is communicated with an inlet of a soot draught fan, an outlet of the soot draught fan is communicated with an inlet of a soot chimney, and an outlet of the heat supplement assembly at the soot side is communicated with an inlet of the secondary heat exchange assembly at the soot side;
the raw flue gas at the air-smoke side is communicated with a hot end inlet of a first-stage heat exchange component at the air-smoke side through a pipeline, a hot end outlet of the first-stage heat exchange component at the air-smoke side is communicated with an inlet of a spraying uniform distribution component at the air-smoke side, an outlet of the spraying uniform distribution component at the air-smoke side is communicated with an inlet of a matched cloth bag dust removal component of SDS at the air-smoke side, an outlet of the matched cloth bag dust removal component at the air-smoke side is communicated with a hot end inlet of a second-stage heat exchange component at the air-smoke side, a hot end outlet of the second-stage heat exchange component at the air-smoke side is communicated with an inlet of a denitration reaction component at the air-smoke side, an outlet of the denitration reaction component at the air-smoke side is communicated with a cold end inlet of the first-stage heat exchange component at the air-smoke side, a cold end outlet of the first-stage heat exchange component at the air-smoke side is communicated with an inlet of an air-smoke induced draft fan, and an outlet of the heat compensation component at the air-smoke side is communicated with a pipeline connected between the spraying uniform distribution components at the air-smoke side through the second-smoke side heat exchange component at the air-smoke side;
the outlet of the soot side heat-supplementing component is communicated with a pipeline which is connected between the air-smoke side injection uniform distribution components through a soot side secondary heat exchange component and an air-smoke side primary heat exchange component.
Through adopting above-mentioned technical scheme, in the heat that the setting of concurrent heating, heat transfer guaranteed concurrent heating subassembly waste heat flue gas all entered into air smoke side flue gas, the heat obtained abundant utilization, secondly, a small amount of pollutants that the gas combustion produced among the concurrent heating subassembly also all carried out SOx/NOx control and handled, and no unnecessary pollutant produces, and it is energy-conserving high-efficient, stable, the environmental protection to unite concurrent heating, heat transfer system operation.
The utility model is further arranged that the soot side heat-supplementing component is connected with blast furnace gas and is connected with an air outlet of a fan.
By adopting the technical scheme, after the desulfurization and dust removal process is completed, the flue gas enters the secondary heat exchange assembly at the soot side and provides hot flue gas with the heat supplementing assembly at the soot side to carry out secondary heat exchange and temperature rise, so that the temperature required by the denitration reaction is reached.
The utility model is further arranged that the air-smoke side heat-supplementing component is connected with blast furnace gas and is connected with an air outlet of a fan.
Through adopting above-mentioned technical scheme, the clean flue gas after the desulfurization gets into in the empty cigarette side second grade heat exchange assemblies and the empty cigarette side concurrent heating subassembly provides hot flue gas and carries out the secondary heat transfer and heaies up to reach the required temperature of denitration reaction.
The utility model is further provided that a denitration agent is connected between the pipeline connecting the soot side secondary heat exchange assembly and the soot side denitration reaction assembly.
Through adopting above-mentioned technical scheme, the clean flue gas of desulfurization after the secondary intensifies temperature enters into the coal smoke side denitration reaction subassembly, gets rid of the nitrogen oxide in the flue gas under the effect of denitration agent.
The utility model is further provided that a denitration agent is connected between the pipelines connected with the air-smoke side secondary heat exchange assembly and the air-smoke side denitration reaction assembly.
Through adopting above-mentioned technical scheme, the clean flue gas of desulfurization after the secondary intensifies temperature enters into empty cigarette side denitration reaction assembly, gets rid of the nitrogen oxide in the flue gas under the effect of denitration agent.
In summary, the utility model mainly has the following beneficial effects: according to the utility model, through the arrangement of heat supplementing and heat exchanging, the heat of the waste heat flue gas of the heat supplementing assembly can be ensured to enter the flue gas at the air flue side, the heat is fully utilized, and secondly, a small amount of pollutants generated by the combustion of the gas in the heat supplementing assembly are also subjected to desulfurization and denitrification treatment, so that no redundant pollutants are generated, and the operation of a combined heat supplementing and heat exchanging system is energy-saving, efficient, stable and environment-friendly; according to the utility model, the smoke at the air smoke side and the smoke at the air smoke side are subjected to combined heat supplementing and temperature rise, the temperature of two paths of smoke after temperature rise is stable, a temperature rise system is convenient to control, and the system is energy-saving and stable; the utility model can effectively remove sulfur dioxide, particles and nitrogen oxides in the smoke of the steel rolling heating furnace, and meets the national requirement of ultralow emission.
Drawings
FIG. 1 is a structural system diagram of the present invention.
In the figure: 1. a first-stage heat exchange assembly at the soot side; 2. the coal smoke side spraying uniform distribution component; 3. a coal smoke side SDS (sodium dodecyl sulfate) matched bag-type dust removal component; 4. a second-stage heat exchange component at the soot side; 5. a soot side denitration reaction assembly; 6. a coal smoke side heat supplementing component; 7. a soot induced draft fan; 8. a soot chimney; 9. the air-smoke side first-stage heat exchange assembly; 10. the air smoke side is sprayed with uniform distribution components; 11. a bag-type dust removal component is matched with the SDS on the air smoke side; 12. the air-smoke side secondary heat exchange assembly; 13. the denitration reaction component is arranged on the air smoke side; 14. the empty smoke side heat supplementing assembly; 15. an air-smoke induced draft fan; 16. an air smoke chimney.
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. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
The following describes an embodiment of the present invention based on its overall structure. The direction of the arrows in the figure is the direction of the gas flow.
As shown in figure 1, the utility model provides a flue gas combined heat exchange temperature rise desulfurization and denitrification device for a steel rolling heating furnace, which comprises a soot side assembly and an empty smoke side assembly.
Wherein, the soot side subassembly includes the supporting sack dust removal subassembly 3 of soot side SDS, the second grade heat exchange assembly 4 of soot side, soot side denitration reaction subassembly 5, 6 soot draught fans 7 of soot side concurrent heating subassembly, soot chimney 8 of soot side first grade heat exchange subassembly 1, soot side injection equipartition subassembly 2, soot side SDS.
Specifically, raw flue gas on the soot side is communicated with a hot end inlet of a primary heat exchange assembly 1 on the soot side through a pipeline, a hot end outlet of the primary heat exchange assembly 1 on the soot side is communicated with an inlet of a uniform injection assembly 2 on the soot side, an outlet of the uniform injection assembly 2 on the soot side is communicated with an inlet of a bag dust removal assembly 3 matched with a SDS on the soot side, an outlet of the bag dust removal assembly 3 matched with the SDS on the soot side is communicated with a hot end inlet of a secondary heat exchange assembly 4 on the soot side, a hot end outlet of the secondary heat exchange assembly 4 on the soot side is communicated with an inlet of a denitration reaction assembly 5 on the soot side, an outlet of the denitration reaction assembly 5 on the soot side is communicated with a cold end inlet of the primary heat exchange assembly 1 on the soot side, a cold end outlet of the primary heat exchange assembly 1 on the soot side is communicated with an inlet of a soot draught fan 7, an outlet of the soot draught fan 7 is communicated with an inlet of a soot chimney 8, and an outlet of the complementary heat assembly 6 is communicated with a hot end inlet of the secondary heat exchange assembly 4 on the soot side. So, the flue gas satisfies the desulfurization temperature through one-level heat exchange assemblies 1, the desulfurization in flue gas side injection equipartition subassembly 2, flue gas after the desulfurization gets into flue gas side second grade heat exchange assemblies 4 and the combined action of concurrent heating subassembly 6 with flue gas temperature rise to the temperature that accords with the denitration, and then carries out the denitration in denitration reaction assembly 5, then the waste heat of the flue gas after the denitration carries out the waste heat to the flue gas of newly-advancing through one-level heat exchange assemblies 1 once more.
In addition, the empty smoke side subassembly includes empty smoke side one-level heat exchange assemblies 9, empty smoke side and sprays equipartition subassembly 10, the supporting sack dust removal subassembly 11 of empty smoke side SDS, empty smoke side second grade heat exchange assemblies 12, empty smoke side denitration reaction subassembly 13, empty smoke side concurrent heating subassembly 14, empty cigarette draught fan 15, empty cigarette chimney 16.
Specifically, raw flue gas on the air-flue side is communicated with a hot end inlet of a primary air-flue side heat exchange component 9 through a pipeline, a hot end outlet of the primary air-flue side heat exchange component 9 is communicated with an inlet of a uniform air-flue side spraying component 10, an outlet of the uniform air-flue side spraying component 10 is communicated with an inlet of a bag-type dust removal component 11 matched with air-flue side SDS, an outlet of the bag-type dust removal component 11 matched with the air-flue side SDS is communicated with a hot end inlet of a secondary air-flue side heat exchange component 12, a hot end outlet of the secondary air-flue side heat exchange component 12 is communicated with an inlet of a denitration reaction component 13 on the air-flue side, an outlet of the denitration reaction component 13 on the air-flue side is communicated with a cold end inlet of the primary air-flue side heat exchange component 9, a cold end outlet of the primary air-flue side heat exchange component 9 is communicated with an inlet of an air-flue draft fan 15, an outlet of the air flue fan 15 is communicated with an inlet of an air flue 16, an outlet of a heat supplement component 14 on the air-flue side heat exchange component 14 is communicated with a pipe between the primary air-flue side heat exchange component 9 and the uniform air-flue side spraying component 10 through the secondary air-flue side heat exchange component 12 The channels are communicated; the outlet of the soot side heat supplementing assembly 6 is communicated with a pipeline between the air-smoke side spraying and uniform distributing assemblies 10 through a soot side secondary heat exchange assembly 4 and an air-smoke side primary heat exchange assembly 9.
So, the former flue gas of empty cigarette side heats the former flue gas of empty cigarette side through the heat that empty cigarette side one-level heat exchange assemblies 9 and 6 minutes of soot side concurrent heating subassembly and makes it satisfy desulfurization temperature, the former flue gas of empty cigarette side after the desulfurization gets into empty cigarette side second grade heat exchange assemblies 12 and the 14 combined action of empty cigarette side concurrent heating subassembly with empty cigarette side temperature of flue gas of rising to the temperature that accords with the denitration, and then denitration in empty cigarette side denitration reaction assembly 13, then the waste heat of the flue gas after the denitration carries out the waste heat to the empty cigarette flue gas of newly advancing through empty cigarette side one-level heat exchange assemblies 9 once more.
It should be noted that the first-stage heat exchange assembly 1 on the soot side, the second-stage heat exchange assembly 4 on the soot side, the first-stage heat exchange assembly 9 on the air-smoke side and the second-stage heat exchange assembly 12 on the air-smoke side all adopt heat pipe type gas-gas heat exchangers.
Referring to fig. 1, the coal-smoke-side heat-supplementing assembly 6 and the air-smoke-side heat-supplementing assembly 14 are both connected to the blast furnace gas and connected to the air outlet of the fan, and the desulfurized flue gas enters the secondary heat exchange assembly to provide the hot flue gas with the heat-supplementing assembly for secondary heat exchange and temperature rise, so as to reach the temperature required by the denitration reaction.
Referring to fig. 1, a denitration agent is connected between the pipelines connected with the soot side secondary heat exchange assembly 4 and the soot side denitration reaction assembly 5, a denitration agent is connected between the pipelines connected with the air-smoke side secondary heat exchange assembly 12 and the air-smoke side denitration reaction assembly 13, and the desulfurized clean flue gas after secondary temperature rise enters the denitration reaction assembly to remove nitrogen oxides in the flue gas under the action of the denitration agent.
The working principle of the utility model is as follows: raw flue gas on the soot side passes through the primary soot side heat exchange assembly 1, the raw flue gas and the desulfurized and denitrated clean flue gas are subjected to primary heat exchange and temperature rise, and the raw flue gas and the desulfurized and denitrated clean flue gas reach the temperature required by SDS desulfurization after the primary temperature rise and then enter the uniform soot side injection assembly 2; in the coal smoke side spraying and uniform distribution component 2, the desulfurizer is fully activated and uniformly distributed in the smoke; the raw flue gas of the coal smoke side doped with the activated desulfurizer enters a cloth bag dust removal component 3 matched with SDS on the coal smoke side to finish the desulfurization and dust removal process, the desulfurized flue gas enters a secondary heat exchange component 4 on the coal smoke side and is subjected to secondary heat exchange and temperature rise with hot flue gas provided by a heat supplementing component 6 on the coal smoke side, so that the temperature required by denitration reaction is reached, the desulfurized and denitrified clean flue gas after secondary temperature rise enters a denitration reaction component 5 on the coal smoke side, nitrogen oxides in the flue gas are removed under the action of a denitrifier, the desulfurized and denitrified high-temperature clean flue gas after desulfurization and denitration further enters a primary heat exchange component 1 on the coal smoke side from an outlet of the denitration reaction component 5 on the coal smoke side to exchange heat with the raw flue gas on the coal smoke side at the inlet for cooling, the heat is recovered, and the desulfurized and denitrified clean flue gas on the coal smoke side after cooling is finally sent to a coal smoke chimney 8 to reach the standard through a coal smoke induced draft fan 7;
the raw flue gas at the air-flue side passes through the primary heat exchange component 9 at the air-flue side, the raw flue gas and the desulfurized and denitrated clean flue gas undergo primary heat exchange and temperature rise, and the raw flue gas and the desulfurized and denitrated clean flue gas reach the temperature required by SDS desulfurization after primary temperature rise and then enter the injection and uniform distribution component 10 at the air-flue side; in the air smoke side spraying and uniform distribution assembly 10, the desulfurizer is fully activated and uniformly distributed in the smoke; raw gas on the air-smoke side doped with an activated desulfurizer enters a bag-type dust removal component 11 matched with SDS on the air-smoke side to complete the desulfurization and dust removal process, the desulfurized clean gas enters a secondary heat exchange component 12 on the air-smoke side to carry out secondary heat exchange and temperature rise with hot gas provided by a heat supplementing component 14 on the air-smoke side, so that the temperature required by denitration reaction is reached, the desulfurized clean gas after secondary temperature rise enters a denitration reaction component 13 on the air-smoke side to remove nitrogen oxides in the gas under the action of a denitration agent, the desulfurized and denitrified high-temperature clean gas further enters a primary heat exchange component 9 on the air-smoke side from an outlet of the denitration reaction component 13 on the air-smoke side to carry out heat exchange and temperature reduction with the raw gas on the air-smoke side at the inlet, the heat is recovered, and the cooled clean gas on the air-smoke side is finally sent to an air-smoke chimney 16 through an air-smoke induced draft fan 15 to reach the standard and be discharged;
the heat supplementing and heat exchanging components on the soot side and the air-smoke side operate in a combined mode, in the primary heat exchanging component 1 on the soot side, primary heat exchanging and heating are carried out on the original flue gas on the soot side and the high-temperature clean flue gas after desulfurization and denitrification, the desulfurized flue gas enters the secondary heat exchanging component 4 on the soot side and carries out secondary heat exchanging and heating with the hot flue gas provided by the heat supplementing component 6 on the soot side, and the waste heat flue gas after the temperature of the heat supplementing component is cooled is further mixed with the flue gas subjected to primary heating on the air-smoke side; in air smoke side one-level heat exchange assembly 9, the former flue gas of air smoke side carries out the heat transfer with the clean flue gas of high temperature after the SOx/NOx control and heaies up once, enter into air smoke side second grade heat exchange assembly 12 after the SOx/NOx control and carry out the secondary heat transfer with the hot flue gas that air smoke side concurrent heating subassembly 14 provided and heat up, waste heat flue gas after concurrent heating subassembly cooling further mixes with the flue gas that air smoke side once heaied up again, concurrent heating, the heat transfer set up guarantee that the heat of concurrent heating subassembly waste heat flue gas all enters into air smoke side flue gas, the heat obtains abundant utilization, secondly, a small amount of pollutant that the gas burning produced in the concurrent heating subassembly has also all carried out SOx/NOx control and has handled, no unnecessary pollutant produces, joint concurrent heating, heat transfer system operation is energy-conserving high-efficient, stable, and environment-friendly.
Although embodiments of the present invention have been shown and described, the present embodiments are merely illustrative of the present invention and are not intended to limit the present invention, and the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples, and those skilled in the art can make modifications, substitutions, variations, etc. of the embodiments as required without departing from the principle and spirit of the present invention, but within the scope of the claims of the present invention.
Claims (5)
1. The utility model provides a be used for steel rolling heating furnace flue gas to unite heat transfer intensification SOx/NOx control device which characterized in that: the coal smoke side component comprises a coal smoke side primary heat exchange component (1), a coal smoke side spraying and uniform distribution component (2), a coal smoke side SDS (sodium dodecyl sulfate) matched cloth bag dust removal component (3), a coal smoke side secondary heat exchange component (4), a coal smoke side denitration reaction component (5), a coal smoke side heat supplementing component (6), a coal smoke induced draft fan (7) and a coal smoke chimney (8), and the air smoke side component comprises an air smoke side primary heat exchange component (9), an air smoke side spraying and uniform distribution component (10), an air smoke side SDS (sodium dodecyl sulfate) matched dust removal component (11), an air smoke side secondary heat exchange component (12), an air smoke side denitration reaction component (13), an air smoke side heat supplementing component (14), an air smoke induced draft fan (15) and an air smoke chimney (16);
the raw flue gas at the soot side is communicated with the hot end inlet of a primary heat exchange component (1) at the soot side through a pipeline, the hot end outlet of the primary heat exchange component (1) at the soot side is communicated with the inlet of a uniform injection component (2) at the soot side, the outlet of the uniform injection component (2) at the soot side is communicated with the inlet of a cloth bag dust removal component (3) matched with SDS at the soot side, the outlet of the cloth bag dust removal component (3) matched with SDS at the soot side is communicated with the hot end inlet of a secondary heat exchange component (4) at the soot side, the hot end outlet of the secondary heat exchange component (4) at the soot side is communicated with the inlet of a denitration reaction component (5) at the soot side, the outlet of the denitration reaction component (5) at the soot side is communicated with the cold end inlet of the primary heat exchange component (1) at the soot side, the cold end outlet of the primary heat exchange component (1) at the soot side is communicated with the inlet of a draught fan (7), the outlet of the draught fan (7) at the smoke side is communicated with the inlet of a smoke chimney (8), the outlet of the soot side heat supplement component (6) is communicated with the hot end inlet of the soot side secondary heat exchange component (4);
raw flue gas on the air-flue side is communicated with a hot end inlet of a primary heat exchange component (9) on the air-flue side through a pipeline, a hot end outlet of the primary heat exchange component (9) on the air-flue side is communicated with an inlet of a spraying uniform distribution component (10) on the air-flue side, an outlet of the spraying uniform distribution component (10) on the air-flue side is communicated with an inlet of a bag-type dust removal component (11) matched with SDS on the air-flue side, an outlet of the bag-type dust removal component (11) matched with SDS on the air-flue side is communicated with a hot end inlet of a secondary heat exchange component (12) on the air-flue side, a hot end outlet of the secondary heat exchange component (12) on the air-flue side is communicated with an inlet of a denitration reaction component (13) on the air-flue side, an outlet of the denitration reaction component (13) on the air-flue side is communicated with a cold end inlet of the primary heat exchange component (9) on the air-flue side, a cold end outlet of the primary heat exchange component (9) on the air-flue side is communicated with an inlet of an air-flue draft fan (15), an outlet of the air flue (15) is communicated with an inlet of an air flue chimney (16), an outlet of the air-smoke side heat supplementing assembly (14) is communicated with a pipeline which is connected between the air-smoke side spraying and uniform distributing assembly (10) and a first-stage air-smoke side heat exchanging assembly (9) through an air-smoke side second-stage heat exchanging assembly (12);
the outlet of the coal smoke side heat supplementing assembly (6) is communicated with a pipeline between the air smoke side spraying and uniform distributing assemblies (10) through a coal smoke side secondary heat exchange assembly (4) and an air smoke side primary heat exchange assembly (9).
2. The device for combined heat exchange, temperature rise, desulfurization and denitrification of flue gas of the steel rolling heating furnace according to claim 1, characterized in that: the coal smoke side heat supplementing assembly (6) is connected with blast furnace gas and is connected with an air outlet of a fan.
3. The device for combined heat exchange, temperature rise, desulfurization and denitrification of flue gas of the steel rolling heating furnace according to claim 1, characterized in that: the air-smoke side heat supplementing assembly (14) is connected with blast furnace gas and is connected with an air outlet of a fan.
4. The device for combined heat exchange, temperature rise, desulfurization and denitrification of flue gas of the steel rolling heating furnace according to claim 1, characterized in that: and a denitration agent is connected between the pipelines connected with the coal smoke side secondary heat exchange assembly (4) and the coal smoke side denitration reaction assembly (5).
5. The device for combined heat exchange, temperature rise, desulfurization and denitrification of flue gas of the steel rolling heating furnace according to claim 1, characterized in that: and a denitration agent is connected between the pipelines connected with the air-smoke-side secondary heat exchange assembly (12) and the air-smoke-side denitration reaction assembly (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220237324.7U CN216677683U (en) | 2022-01-28 | 2022-01-28 | Be used for steel rolling heating furnace flue gas to unite heat transfer intensification SOx/NOx control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220237324.7U CN216677683U (en) | 2022-01-28 | 2022-01-28 | Be used for steel rolling heating furnace flue gas to unite heat transfer intensification SOx/NOx control device |
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| Publication Number | Publication Date |
|---|---|
| CN216677683U true CN216677683U (en) | 2022-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220237324.7U Active CN216677683U (en) | 2022-01-28 | 2022-01-28 | Be used for steel rolling heating furnace flue gas to unite heat transfer intensification SOx/NOx control device |
Country Status (1)
| Country | Link |
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| CN (1) | CN216677683U (en) |
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2022
- 2022-01-28 CN CN202220237324.7U patent/CN216677683U/en active Active
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