CN216137013U - Cement kiln soot blowing system - Google Patents
Cement kiln soot blowing system Download PDFInfo
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- CN216137013U CN216137013U CN202122042935.4U CN202122042935U CN216137013U CN 216137013 U CN216137013 U CN 216137013U CN 202122042935 U CN202122042935 U CN 202122042935U CN 216137013 U CN216137013 U CN 216137013U
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Abstract
The utility model provides a cement kiln soot blowing system which is reasonable in structural design, suitable for a cement kiln high-dust environment, high in soot blowing efficiency and good in soot blowing effect. The utility model comprises a jet flow soot blower, a shock wave soot blower, a heater, a pressure stabilizing tank, a first filter, a dryer, an air compressor and a second filter; the outlet of the second filter is connected with the inlet of the air compressor through a pipeline; the outlet of the air compressor is connected with the inlet of the dryer through a pipeline; the outlet of the dryer is connected with the inlet of the first filter through a pipeline; the outlet of the first filter is connected with the inlet of the pressure stabilizing tank through a pipeline; the outlet of the pressure stabilizing tank is connected with the inlet of the heater through a pipeline; the outlet of the heater is connected with the jet flow soot blower and the shock wave soot blower through pipelines.
Description
Technical Field
The utility model relates to a cement kiln soot blowing system, which is used for blowing soot of a cement kiln catalyst.
Background
Along with the rapid development of social economy in China, the demand of energy is increasing day by day, and along with the combustion of a large amount of energy substances such as coal, petroleum and the like, the emission of nitrogen oxides is increasing day by day. In recent years, the ministry of environmental protection enforces ultra-low emission policy, the emission index of nitrogen oxides is increasingly strict, the graded combustion modification and accurate ammonia injection SNCR of the traditional cement kiln furnace cannot meet the ultra-low emission requirement, and SCR denitration is imperative. The technical route that cement kiln SCR denitration was used at present mainly divide into high temperature high dirt, medium temperature well dirt and low temperature well dirt three major types to medium temperature well dirt SCR is comparatively economical reasonable, even if medium temperature well dirt, about 60g Nm3 in old times is pressed to powder storehouse content, and conventional SCR blows the ash and can't satisfy the soot blowing requirement, leads to blowing inefficiency, and it is poor to blow the ash effect, consequently needs a novel soot blower to satisfy this kind of abominable operating mode requirement urgently.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art and provide the cement kiln soot blowing system which is reasonable in structural design, suitable for the cement kiln high-dust environment, high in soot blowing efficiency and good in soot blowing effect.
The technical scheme adopted by the utility model for solving the problems is as follows: a cement kiln soot-blowing system is characterized in that: the device comprises a jet flow soot blower, a shock wave soot blower, a heater, a pressure stabilizing tank, a first filter, a dryer, an air compressor and a second filter; the outlet of the second filter is connected with the inlet of the air compressor through a pipeline; the outlet of the air compressor is connected with the inlet of the dryer through a pipeline; the outlet of the dryer is connected with the inlet of the first filter through a pipeline; the outlet of the first filter is connected with the inlet of the pressure stabilizing tank through a pipeline; the outlet of the pressure stabilizing tank is connected with the inlet of the heater through a pipeline; the outlet of the heater is connected with the jet flow soot blower and the shock wave soot blower through pipelines.
The jet flow soot blower and the shock wave soot blower are arranged above each layer of catalyst platform of the cement kiln.
The utility model is characterized in that an overpressure exhaust valve, a check valve and a four-way shutoff valve are sequentially arranged on a pipeline for connecting an air compressor and a dryer.
The utility model is provided with a third shut-off valve on a pipeline connecting a drier and a first filter.
A second shut-off valve and a flowmeter are arranged on a pipeline connecting a first filter and a pressure stabilizing tank.
The pressure stabilizing tank is provided with a discharge valve and a pressure release valve.
A first shut-off valve, a heating inlet thermometer and a heating inlet pressure gauge are sequentially arranged on a pipeline connecting a pressure stabilizing tank and a heater.
A heating outlet thermometer is arranged on a pipeline which is connected with a heater, a jet flow soot blower and a shock wave soot blower.
The jet flow soot blower comprises a jet flow pressure stabilizing barrel, a propelling roadster, a soot blowing main pipe, a soot blowing branch pipe and a jet flow nozzle; the outlet of the heater is connected with the inlet of the jet flow pressure stabilizing barrel through a pipeline; the outlet of the jet pressure stabilizing barrel is connected with the inlet of the soot blowing main pipe through a pipeline; the main soot blowing pipe is arranged on the propulsion roadster, and the outlet of the main soot blowing pipe is connected with the soot blowing branch pipe; the jet nozzle is arranged on the soot blowing branch pipe.
The utility model is provided with a pressure control valve on the pipeline connecting the jet flow pressure stabilizing barrel and the soot blowing main pipe.
Compared with the prior art, the utility model has the following advantages and effects: 1. the cement kiln flue gas powder bin has higher viscosity, the fluidity is poorer, compared with steam, the water content in the medium is greatly reduced by adopting compressed air as the medium, the blowing and drying can be ensured, the dust characteristic of cement is combined, the viscosity of cement fly ash is greatly reduced at about 220 ℃, the dust blowing efficiency and effect are improved by matching jet flow and shock wave dust blowing, and therefore the cement kiln flue gas powder bin can be suitable for a large fly ash flue gas system. 2. Compared with the traditional nozzle, the jet flow nozzle can provide higher impact pressure under the condition of the same distance, and enhances the soot blowing effect. 3. The system equipment is mature equipment, and the system is safe and reliable and has good stability.
Drawings
FIG. 1 is a schematic structural diagram of the connection between the embodiment of the utility model and a cement kiln.
FIG. 2 is a schematic structural diagram of a jet sootblower in an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
The device comprises a jet flow soot blower 1, a shock wave soot blower 2, a heater 3, a heating outlet thermometer 4, a heating inlet pressure gauge 5, a heating inlet thermometer 6, a first shut-off valve 7, a pressure stabilizing tank 8, a discharge valve 9, a pressure release valve 10, a second shut-off valve 11, a flow meter 12, a first filter 13, a third shut-off valve 14, a dryer 15, a fourth shut-off valve 16, a check valve 17, an overpressure exhaust valve 18, an air compressor 19, a second filter 20, a ship-shaped soot hopper 21, a gravity type flap valve 22 and a chain scraper 23.
The jet flow soot blower 1 and the shock wave soot blower 2 are installed above each layer of catalyst platform of the cement kiln 31.
The outlet of the second filter 20 is connected with the inlet of the air compressor 19 through a pipeline, the input air is pressurized by the air compressor to form high-temperature air, the compressed air is not recommended to be cooled, heat waste is caused, and the oil-free screw air compressor can be adopted to ensure that the outlet is pressurized to 0.6 Mpa.
The outlet of the air compressor 19 is connected with the inlet of the dryer 15 through a pipeline, and an overpressure exhaust valve 18, a check valve 17 and a four-way shutoff valve 16 are sequentially arranged on the pipeline.
The dryer 15 dehumidifies the air to remove most of the moisture in the air. The outlet of the dryer 15 is connected to the inlet of the first filter 13 via a pipe, and a third shut-off valve 14 is mounted on the pipe. The first filter 13 removes impurities such as oil stain, water vapor and the like, and the quality of the first filter meets the requirement of compressed air. The first filter 13 is a three-stage fine filter.
The outlet of the first filter 13 is connected to the inlet of the surge tank 8 via a pipe, and a second shut-off valve 11 and a flow meter 12 are mounted on the pipe. The surge tank 8 is provided with a discharge valve 9 and a pressure release valve 10. The buffer time of more than 15min can be ensured on the model selection of the pressure stabilizing tank 8.
The outlet of the pressure stabilizing tank 8 is connected with the inlet of the heater 3 through a pipeline, and a first shutoff valve 7, a heating inlet thermometer 6 and a heating inlet pressure gauge 5 are sequentially arranged on the pipeline. The temperature setting of the heater 3 needs to be above the flue gas temperature.
The outlet of the heater 3 is connected with the jet flow soot blower 1 and the shock wave soot blower 2 above each layer of catalyst platform through a pipeline, and a heating outlet thermometer 4 is arranged on the pipeline.
The jet sootblower 1 comprises a jet pressure stabilizing barrel 24, a pressure control valve 25, a propelling trolley 26, an electric control device 27, a main sootblowing pipe 28, a branch sootblowing pipe 29 and a jet nozzle 30.
The export of heater 3 passes through the access connection of pipeline and efflux steady voltage bucket 24, and efflux steady voltage bucket 24 carries out the steady voltage, reduces because the pipeline influences the gas phenomenon of robbing that produces, can set up the convenient operation monitoring of manometer on the spot on the steady voltage.
The outlet of the jet pressure stabilizing barrel 24 is connected with the inlet of a main soot blowing pipe 28 through a pipeline, a pressure control valve 25 is arranged on the pipeline, the pressure is adjusted according to the soot blowing effect on site, and the pressure required by the soot blowing pressure in the system design soot blowing is ensured. It is worth mentioning that the pressure is determined according to the soot blowing distance and the flue gas flow rate.
The main soot blowing pipe 28 is installed on the propelling trolley 26, and the outlet of the main soot blowing pipe 28 is connected with a soot blowing branch pipe 29. The electric control device 27 is mounted on the propelling carriage 26. After the pressure is set by the pressure control valve 25, the air pressure is automatically controlled by a propelling trolley 26 and an electric control device 27, and a main soot blowing pipe 28 and a branch soot blowing pipe 29 move back and forth in the reactor for blowing.
The bottom of the cement kiln 31 is provided with a ship-shaped ash bucket 21, a gravity flap valve 22 is installed on the ship-shaped ash bucket 21, and a chain scraper 23 is arranged below the ship-shaped ash bucket 21. The fly ash on the surface of the catalyst falls into a boat-shaped ash bucket 21 through flue gas, and the ash falls into a chain scraper conveyor 23 through a gravity type flap valve 22 according to the action of gravity and is conveyed into a cement system for recycling.
In addition, it should be noted that the specific embodiments described in the present specification may be different in the components, the shapes of the components, the names of the components, and the like, and the above description is only an illustration of the structure of the present invention. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the utility model as defined in the accompanying claims.
Claims (10)
1. A cement kiln soot-blowing system is characterized in that: the device comprises a jet flow soot blower, a shock wave soot blower, a heater, a pressure stabilizing tank, a first filter, a dryer, an air compressor and a second filter; the outlet of the second filter is connected with the inlet of the air compressor through a pipeline; the outlet of the air compressor is connected with the inlet of the dryer through a pipeline; the outlet of the dryer is connected with the inlet of the first filter through a pipeline; the outlet of the first filter is connected with the inlet of the pressure stabilizing tank through a pipeline; the outlet of the pressure stabilizing tank is connected with the inlet of the heater through a pipeline; the outlet of the heater is connected with the jet flow soot blower and the shock wave soot blower through pipelines.
2. The cement kiln soot blowing system of claim 1, wherein: the jet flow soot blower and the shock wave soot blower are arranged above each layer of catalyst platform of the cement kiln.
3. The cement kiln soot blowing system of claim 1, wherein: an overpressure exhaust valve, a check valve and a four-way shutoff valve are sequentially arranged on a pipeline connecting the air compressor and the dryer.
4. The cement kiln soot blowing system of claim 1, wherein: and a third shutoff valve is arranged on a pipeline connecting the dryer and the first filter.
5. The cement kiln soot blowing system of claim 1, wherein: and a second shut-off valve and a flowmeter are arranged on a pipeline connecting the first filter and the pressure stabilizing tank.
6. The cement kiln soot blowing system of claim 1, wherein: and the pressure stabilizing tank is provided with a discharge valve and a pressure release valve.
7. The cement kiln soot blowing system of claim 1, wherein: a first shut-off valve, a heating inlet thermometer and a heating inlet pressure gauge are sequentially arranged on a pipeline connecting the pressure stabilizing tank and the heater.
8. The cement kiln soot blowing system of claim 1, wherein: and a heating outlet thermometer is arranged on a pipeline connecting the heater with the jet flow soot blower and the shock wave soot blower.
9. The cement kiln soot blowing system of claim 1, wherein: the jet soot blower comprises a jet pressure stabilizing barrel, a propelling roadster, a soot blowing main pipe, a soot blowing branch pipe and a jet nozzle; the outlet of the heater is connected with the inlet of the jet flow pressure stabilizing barrel through a pipeline; the outlet of the jet pressure stabilizing barrel is connected with the inlet of the soot blowing main pipe through a pipeline; the main soot blowing pipe is arranged on the propulsion roadster, and the outlet of the main soot blowing pipe is connected with the soot blowing branch pipe; the jet nozzle is arranged on the soot blowing branch pipe.
10. The cement kiln soot blowing system of claim 9, wherein: and a pressure control valve is arranged on a pipeline connecting the jet pressure stabilizing barrel and the soot blowing main pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122042935.4U CN216137013U (en) | 2021-08-27 | 2021-08-27 | Cement kiln soot blowing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122042935.4U CN216137013U (en) | 2021-08-27 | 2021-08-27 | Cement kiln soot blowing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216137013U true CN216137013U (en) | 2022-03-29 |
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ID=80808717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122042935.4U Active CN216137013U (en) | 2021-08-27 | 2021-08-27 | Cement kiln soot blowing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216137013U (en) |
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2021
- 2021-08-27 CN CN202122042935.4U patent/CN216137013U/en active Active
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