CN219539943U - Cement kiln SCR denitration soot blowing air source temperature regulating device - Google Patents
Cement kiln SCR denitration soot blowing air source temperature regulating device Download PDFInfo
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- CN219539943U CN219539943U CN202222878445.2U CN202222878445U CN219539943U CN 219539943 U CN219539943 U CN 219539943U CN 202222878445 U CN202222878445 U CN 202222878445U CN 219539943 U CN219539943 U CN 219539943U
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Abstract
The utility model discloses a cement kiln SCR denitration soot blowing air source temperature regulating device, which comprises a reactor and a temperature regulating device arranged in the reactor, wherein a catalyst layer is arranged in the reactor, an ash bucket is arranged at the bottom of the reactor, the temperature regulating device is positioned in the ash bucket and comprises a heat exchange box, the bottoms of two sides of the heat exchange box are respectively connected with an air inlet pipe and an air outlet pipe, a plurality of first baffles vertically fixed at the bottoms of the heat exchange box are arranged in the heat exchange box, a plurality of second baffles vertically fixed at the top wall of the heat exchange box are arranged between two adjacent first baffles, and an air flow channel is formed between the first baffles and the second baffles. The utility model firstly sends the air source of the soot blower into the heat exchange box in the ash bucket, and the air source exchanges heat with the high-temperature flue gas, so that the air source can be heated, the temperature difference with the flue gas in the reactor can be reduced, and the catalyst can be effectively protected.
Description
Technical Field
The utility model belongs to the technical field of denitration, and particularly relates to a cement kiln SCR denitration soot blowing air source temperature adjusting device.
Background
At present, a Selective Catalytic Reduction (SCR) denitration technology is often adopted in kiln treatment in the cement kiln industry, and is the denitration technology with highest denitration efficiency and the most market prospect, so that the technology has become a technology for efficiently controlling NO in various industries in China and even internationally X The primary choice of emissions. The catalyst is used as a core material of the SCR denitration technology and becomes a direct factor for restricting the catalytic reaction. However, when flue gas containing high concentration and high viscosity dust passes through the catalyst, the flue gas is extremely easy to agglomerate on the surface of the catalyst, and bridging and blocking are formed, so that the catalyst is poisoned, and the denitration efficiency is greatly reduced. In order to prevent the catalyst from layering ash and improve the denitration efficiency, a soot blower is arranged above each layer of catalyst.
A commonly used soot blowing technology for SCR denitration of a cement kiln at home and abroad is rake soot blowing, the soot blowing effect of the technology is good, the temperature of an air source is 0-30 ℃, the temperature of smoke in a reactor can reach 280-350 ℃, when the soot blower operates, the temperature difference between the air source and the smoke is large, and the catalyst can be damaged when the soot blower operates for a long time. Therefore, a heater is generally designed on the air source pipeline at the front end of the soot blower, and the air source temperature is increased through the heater, but the heater has high power and high operation cost. In view of the above, it is necessary to study a cement kiln SCR denitration soot blowing air source temperature regulating device.
Disclosure of Invention
In order to solve the defects of the prior art, the utility model aims to provide the temperature regulating device for the SCR denitration soot blowing air source of the cement kiln, which is characterized in that the air source of the soot blower is firstly sent into the heat exchange box in the ash bucket, the air source exchanges heat with high-temperature flue gas, the air source can be heated, the temperature difference with the flue gas in the reactor can be reduced, and the catalyst is effectively protected.
In order to achieve the above object, the present utility model adopts the following technical scheme:
the utility model provides a cement kiln SCR denitration soot blowing air supply temperature regulating device, including the reactor and set up in the inside temperature regulating device of reactor, the inside of reactor is provided with the catalyst layer, and the bottom is provided with the ash bucket, and temperature regulating device is located the ash bucket, including the heat exchange box, the bottom of heat exchange box both sides is connected with intake pipe and outlet duct respectively, and the inside of heat exchange box is provided with a plurality of first baffles that are fixed in its bottom perpendicularly, is provided with a plurality of second baffles that are fixed in the heat exchange box roof perpendicularly between two adjacent first baffles, forms air current passageway between first baffle and the second baffle.
Preferably, the outer end of the air inlet pipe penetrates through the side wall of the ash bucket to be connected with an air source, and the outer end of the air outlet pipe penetrates through the side wall of the ash bucket to be connected with the soot blower.
Preferably, the air outlet end of the soot blower is connected with a soot blowing pipeline, and the other end of the soot blowing pipeline passes through the side wall of the reactor and is arranged above the catalyst layer.
Preferably, the heights of the first baffle plate and the second baffle plate are the same and are smaller than the height of the heat exchange box.
Preferably, the number of the heat exchange boxes is 2-4, and the heat exchange boxes are vertically arranged in the ash bucket at equal intervals.
Preferably, the air outlet pipe is wrapped with a heat insulation material.
Preferably, a temperature measuring instrument is arranged on the air outlet pipe.
The utility model has the advantages that: the utility model has simple structure and convenient installation, firstly the air source of the soot blower is sent into the heat exchange box in the ash bucket, and the air source exchanges heat with the high-temperature flue gas, so that the air source can be heated, the temperature difference between the air source and the flue gas in the reactor can be reduced, the catalyst can be effectively protected, the heat of the flue gas in the ash bucket can be utilized, the energy is saved, and the running cost is reduced; the flow time of the air source in the heat exchange box can be prolonged through the air flow channels between the first baffles and the second baffles, and the heat exchange time of the air source and high-temperature flue gas is prolonged, so that the heat exchange effect is improved, and the air source is fully heated; the number of the heat exchange boxes can be selected according to the working requirement, the operation is convenient, and the application flexibility is high.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the structure of the heat exchange box in the present utility model;
fig. 3 is a cross-sectional view of the ash bucket of the present utility model.
Meaning of reference numerals in the drawings: 1. the device comprises a reactor, 2, a catalyst layer, 3, an ash bucket, 4, a heat exchange box, 5, an air inlet pipe, 6, an air outlet pipe, 7, a first baffle, 8, a second baffle, 9, a soot blower, 10 and a soot blowing pipeline.
Description of the embodiments
The utility model is described in detail below with reference to the drawings and the specific embodiments.
Referring to fig. 1-3, the temperature regulating device for the cement kiln SCR denitration soot blowing air source comprises a reactor 1 and a temperature regulating device arranged in the reactor 1, wherein a catalyst layer 2 is arranged in the reactor 1, an ash bucket 3 is arranged at the bottom of the reactor 1, and the temperature regulating device is positioned in the ash bucket 3.
The temperature regulating device comprises a heat exchange box 4, wherein the bottoms of the two sides of the heat exchange box 4 are respectively connected with an air inlet pipe 5 and an air outlet pipe 6, a plurality of first baffle plates 7 which are vertically fixed at the bottoms of the heat exchange box 4 are arranged in the heat exchange box 4, a plurality of second baffle plates 8 which are vertically fixed on the top wall of the heat exchange box 4 are arranged between two adjacent first baffle plates 7, and an air flow channel is formed between the first baffle plates 7 and the second baffle plates 8. The heights of the first baffle 7 and the second baffle 8 are the same and are smaller than the height of the heat exchange box 4. The flow time of the air source in the heat exchange box 4 can be prolonged through the air flow channels between the first baffle plates 7 and the second baffle plates 8, and the heat exchange time of the air source and the high-temperature flue gas can be prolonged, so that the heat exchange effect is improved, the air source is fully heated,
the outer end of the air inlet pipe 5 penetrates through the side wall of the ash bucket 3 to be connected with an air source, and the outer end of the air outlet pipe 6 penetrates through the side wall of the ash bucket 3 to be connected with a soot blower 9. The air outlet end of the soot blower 9 is connected with a soot blowing pipeline 10, and the other end of the soot blowing pipeline 10 passes through the side wall of the reactor 1 and is arranged above the catalyst layer. Through heat exchange box 4, air supply and high temperature flue gas heat transfer, can heat the air supply, the air supply after the heating is sent to reactor 1 through soot blower 9, not only can reduce with the temperature difference of the interior flue gas of reactor 1, effectively protect the catalyst, and the heat of the interior flue gas of usable ash bucket 3, the energy is saved reduces running cost.
The number of the heat exchange boxes 4 is 2-4, the heat exchange boxes 4 are vertically arranged in the ash bucket 3 at equal intervals, the number of the heat exchange boxes 4 can be selected according to working requirements, the operation is convenient, and the application flexibility is high.
The air outlet pipe 6 is wrapped with heat insulation materials, so that a good heat insulation effect can be achieved, and the air outlet pipe 6 is provided with a temperature measuring instrument, so that the temperature of an air source can be monitored in real time.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be appreciated by persons skilled in the art that the above embodiments are not intended to limit the utility model in any way, and that all technical solutions obtained by means of equivalent substitutions or equivalent transformations fall within the scope of the utility model.
Claims (7)
1. The utility model provides a cement kiln SCR denitration soot blowing air supply temperature regulating device, includes reactor (1) and sets up in the inside temperature regulating device of reactor (1), its characterized in that, the inside of reactor (1) is provided with catalyst layer (2), and the bottom is provided with ash bucket (3), temperature regulating device is located ash bucket (3), including heat exchange box (4), the bottom of heat exchange box (4) both sides is connected with intake pipe (5) and outlet duct (6) respectively, and the inside of heat exchange box (4) is provided with a plurality of first baffles (7) that are fixed in its bottom perpendicularly, adjacent two be provided with a plurality of perpendicular second baffles (8) that are fixed in heat exchange box (4) roof between first baffle (7) and second baffle (8), form air current passageway between first baffle (7).
2. The temperature regulating device for the SCR denitration soot blowing air source of the cement kiln according to claim 1 is characterized in that the outer end of the air inlet pipe (5) penetrates through the side wall of the soot bucket (3) to be connected with an air source, and the outer end of the air outlet pipe (6) penetrates through the side wall of the soot bucket (3) to be connected with a soot blower (9).
3. The temperature regulating device for an air source of a cement kiln SCR denitration soot blowing device according to claim 2, wherein an air outlet end of the soot blower (9) is connected with a soot blowing pipeline (10), and the other end of the soot blowing pipeline (10) passes through the side wall of the reactor (1) and is arranged above a catalyst layer.
4. The temperature regulating device for the SCR denitration soot blowing air source of the cement kiln according to claim 1 is characterized in that the heights of the first baffle plate (7) and the second baffle plate (8) are the same and are smaller than the height of the heat exchange box (4).
5. The temperature adjusting device for the SCR denitration soot blowing air source of the cement kiln according to claim 1 is characterized in that 2-4 heat exchange boxes (4) are vertically arranged in the soot hopper (3) at equal intervals.
6. The temperature regulating device for the SCR denitration soot blowing air source of the cement kiln according to claim 1, wherein the air outlet pipe (6) is wrapped with a heat insulation material.
7. The temperature regulating device for the SCR denitration soot blowing air source of the cement kiln according to claim 1, wherein a temperature measuring instrument is arranged on the air outlet pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222878445.2U CN219539943U (en) | 2022-10-31 | 2022-10-31 | Cement kiln SCR denitration soot blowing air source temperature regulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222878445.2U CN219539943U (en) | 2022-10-31 | 2022-10-31 | Cement kiln SCR denitration soot blowing air source temperature regulating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219539943U true CN219539943U (en) | 2023-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222878445.2U Active CN219539943U (en) | 2022-10-31 | 2022-10-31 | Cement kiln SCR denitration soot blowing air source temperature regulating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219539943U (en) |
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2022
- 2022-10-31 CN CN202222878445.2U patent/CN219539943U/en active Active
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