CN220455263U - Cement plant ammonia escape on-line monitoring system - Google Patents
Cement plant ammonia escape on-line monitoring system Download PDFInfo
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- CN220455263U CN220455263U CN202321439555.7U CN202321439555U CN220455263U CN 220455263 U CN220455263 U CN 220455263U CN 202321439555 U CN202321439555 U CN 202321439555U CN 220455263 U CN220455263 U CN 220455263U
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- pipeline
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000012544 monitoring process Methods 0.000 title claims abstract description 22
- 239000004568 cement Substances 0.000 title claims abstract description 17
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 16
- 239000007789 gas Substances 0.000 claims abstract description 45
- 238000005070 sampling Methods 0.000 claims abstract description 41
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000003546 flue gas Substances 0.000 claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000010926 purge Methods 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000007789 sealing Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000004868 gas analysis Methods 0.000 claims description 3
- 238000009833 condensation Methods 0.000 abstract description 6
- 230000005494 condensation Effects 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 3
- 230000000630 rising effect Effects 0.000 abstract description 2
- 239000000779 smoke Substances 0.000 description 5
- 238000007664 blowing Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 230000035699 permeability Effects 0.000 description 2
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses an online monitoring system for ammonia escape in a cement plant, which comprises a gas analyzer and a flue gas pipeline, wherein a detection end of the gas analyzer is communicated with a measuring tank through the pipeline, an air inlet end of the measuring tank is respectively communicated with an air source electromagnetic valve and a calibration valve through the pipeline, a constant temperature heater is arranged between the air source electromagnetic valve and the measuring tank, and an air inlet end of the air source electromagnetic valve is communicated with a pressure regulating valve through the pipeline. According to the utility model, through the cooperation of the transmission pipe, the purging electromagnetic valve and the filter head, the concentration of gas particles entering the sampling pipe can be ensured to be in a required range, and external gas can be introduced through the transmission pipe to blow back the filter head; through electric heater, heat tracing pipeline, constant temperature heater and temperature controller cooperation use, can utilize the temperature controller characteristic for electric heater, heat tracing pipeline and temperature controller are to the gas that flows through the operation of rising temperature, maintain the temperature in the demand scope, stop the water condensation phenomenon and appear.
Description
Technical Field
The utility model relates to the technical field of cement production, in particular to an online monitoring system for ammonia escape in a cement plant.
Background
In cement plants, in order to make the flue gas reach the emission standard, an online monitoring system is used to detect the concentration of escaped ammonia in the flue gas.
However, in practical application, the monitoring system cannot perform back-flushing operation in the sampling step, impurities in the flue gas easily block the sampling piece, the temperature of the monitored gas cannot be intelligently monitored and maintained, the phenomenon of water condensation in the gas exists, and certain limitation exists.
Therefore, it is necessary to invent an online monitoring system for ammonia slip in cement plants to solve the above problems.
Disclosure of Invention
The utility model aims to provide an online monitoring system for ammonia escape in a cement plant, which has the advantages of back blowing anti-blocking and intelligent temperature control, and solves the problems that the monitoring system cannot perform back blowing operation in a sampling step, the sampling piece is easily blocked by impurities in flue gas, the temperature of the gas cannot be intelligently monitored and maintained, and the phenomenon of water condensation in the gas exists.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an online monitoring system of cement plant's ammonia escape, includes gas analysis appearance and flue gas pipeline, gas analysis appearance's detection end has the measuring cell through the pipeline intercommunication, the inlet end of measuring cell has air source solenoid valve and mark the valve through the pipeline intercommunication respectively, install constant temperature heater between air source solenoid valve and the measuring cell, the inlet end of air source solenoid valve has the air-vent valve through the pipeline intercommunication, the inlet end of mark the valve has the mark gas flowmeter through the pipeline intercommunication, the surface through-mounting of flue gas pipeline has the gas sampling subassembly, the outlet end of gas sampling subassembly has the heat tracing pipeline through the pipeline intercommunication, the other end of heat tracing pipeline has high temperature filter through the pipeline intercommunication, install high temperature pneumatic valve between high temperature pneumatic valve and the measuring cell, the one end of high temperature pneumatic valve has the stop valve through the pipeline intercommunication, the other end intercommunication of stop valve has pressure switch.
Preferably, the outside of constant temperature heater, high temperature filter, heat tracing pipeline and gas sampling assembly is all fixed mounting has the temperature controller, fixed mounting has the tee bend between high temperature pneumatic valve, calibration valve and the measuring cell.
Preferably, the gas sampling assembly comprises a connecting pipe, the connecting pipe is installed in the inner cavity of the flue gas pipeline in a penetrating mode, a sampling pipe is installed at one end, far away from the flue gas pipeline, of the connecting pipe, and one side of the sampling pipe is communicated with a transmission pipe.
Preferably, the bottom of the connecting pipe is fixedly provided with the connecting pipe and positioned in the inner cavity of the flue gas pipeline, and the sampling pipe is communicated with the transmission pipe through a one-way valve.
Preferably, the side of the connecting pipe opposite to the sampling pipe is fixedly connected with a sealing flange and communicated with the sampling pipe through the sealing flange, and a purging electromagnetic valve is sleeved on the surface of the transmission pipe.
Preferably, the surface fixing sleeve of the connecting pipe is provided with an electric heater, and the circulation direction of the one-way valve is from right to left.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model is used by matching the transmission pipe, the purging electromagnetic valve and the filter head, has the advantage of back blowing and blocking prevention, can ensure that the concentration of gas particles entering the sampling pipe is in a required range with the assistance of the filter head, and external gas is introduced through the transmission pipe to back blow the filter head, so that the surface permeability of the filter head is ensured and the flow rate of the gas entering the sampling pipe is ensured;
the intelligent temperature control device has the advantage of intelligent temperature control through the cooperation of the electric heater, the heat tracing pipeline, the constant-temperature heater and the temperature controller, and can utilize the characteristics of the temperature controller to enable the electric heater, the heat tracing pipeline and the temperature controller to perform temperature rising operation on flowing gas, maintain the temperature in a required range, prevent the occurrence of water condensation phenomenon and ensure the detection accuracy.
Drawings
FIG. 1 is a schematic flow chart of the present utility model;
FIG. 2 is a schematic diagram of a gas sampling assembly according to the present utility model.
In the figure: 1. a gas analyzer; 2. a measuring cell; 3. a constant temperature heater; 4. a temperature controller; 5. an air source electromagnetic valve; 6. a pressure regulating valve; 7. calibrating a valve; 8. a standard gas flowmeter; 9. a pressure switch; 10. a stop valve; 11. a heat trace line; 12. purging the electromagnetic valve; 13. a gas sampling assembly; 131. a sampling tube; 132. a transmission tube; 133. a one-way valve; 134. an electric heater; 135. a connecting pipe; 136. a filter head; 14. a high temperature filter; 15. a high temperature pneumatic valve; 16. and a flue gas pipeline.
Detailed Description
Referring to fig. 1-2, an online monitoring system for ammonia escape in a cement plant comprises a gas analyzer 1 and a flue gas pipeline 16, wherein a detection end of the gas analyzer 1 is communicated with a measuring tank 2 through a pipeline, an air inlet end of the measuring tank 2 is respectively communicated with an air source electromagnetic valve 5 and a calibration valve 7 through a pipeline, a constant temperature heater 3 is installed between the air source electromagnetic valve 5 and the measuring tank 2, the air inlet end of the air source electromagnetic valve 5 is communicated with a pressure regulating valve 6 through a pipeline, the air inlet end of the calibration valve 7 is communicated with a standard gas flowmeter 8 through a pipeline, a gas sampling assembly 13 is installed on the surface of the flue gas pipeline 16 in a penetrating manner, an air outlet end of the gas sampling assembly 13 is communicated with a heat tracing pipeline 11 through a pipeline, the other end of the heat tracing pipeline 11 is communicated with a high temperature filter 14 through a pipeline, a high temperature pneumatic valve 15 is installed between the high temperature filter 14 and the measuring tank 2, one end of the high temperature pneumatic valve 15 is communicated with a stop valve 10 through a pipeline, and the other end of the stop valve 10 is communicated with a pressure switch 9;
the temperature controller 4 is fixedly arranged on the outer sides of the constant temperature heater 3, the high temperature filter 14, the heat tracing pipeline 11 and the gas sampling assembly 13, and a three-way pipe is fixedly arranged among the high temperature pneumatic valve 15, the calibration valve 7 and the measuring tank 2;
the gas sampling assembly 13 comprises a connecting pipe 135, the connecting pipe 135 is installed in the inner cavity of the flue gas pipeline 16 in a penetrating way, an electric heater 134 is fixedly sleeved on the surface of the connecting pipe 135, a sampling pipe 131 is installed at one end, far away from the flue gas pipeline 16, of the connecting pipe 135, and one side of the sampling pipe 131 is communicated with a transmission pipe 132;
the bottom end of the connecting pipe 135 is fixedly provided with the connecting pipe 135 in the inner cavity of the flue gas pipeline 16, and the sampling pipe 131 is communicated with the transmission pipe 132 through the one-way valve 133;
the opposite sides of the connecting pipe 135 and the sampling pipe 131 are fixedly connected with sealing flanges and communicated through the sealing flanges, the surface of the transmission pipe 132 is fixedly sleeved with the purging electromagnetic valve 12, and the circulation direction of the one-way valve 133 is from right to left;
one end of the sampling tube 131, which is far away from the connecting tube 135, is communicated with an external jet pump, an air outlet end of the external jet pump is communicated with the heat tracing pipeline 11, a light source in the gas analyzer 1 is a near infrared semiconductor laser light source, and a photoelectric detector is an InGaAs detector;
the measurement cell 2 is arranged, so that the transmitted gas can be temporarily collected and stored for laser analysis by the gas analyzer 1, and the constant temperature heater 3, the heat tracing pipeline 11 and the electric heater 134 are arranged, so that the temperature of the flowing gas can be maintained in the working state, and the phenomenon of water condensation is avoided;
by arranging a plurality of temperature controllers 4, the temperature sensors in the temperature controllers 4 can be used for real-time monitoring so as to respectively control the motion states of the constant temperature heater 3, the heat tracing pipeline 11 and the electric heater 134, so that the temperature value is in an ideal range;
the air source electromagnetic valve 5 and the pressure regulating valve 6 are arranged, so that the compressed air inlet requirement can be met, the pressure regulating function is realized, and the standard air inlet requirement can be met by arranging the calibration valve 7 and the standard air flowmeter 8, so that the zero calibration operation of the air analyzer 1 is convenient;
by arranging the heat tracing pipeline 11, the purpose of assisting in heating can be achieved while the normal transmission of gas is met, and by arranging the one-way valve 133, the one-way conduction effect can be achieved, and the flue gas is prevented from entering the transmission pipe 132;
by arranging the filter head 136, the flue gas in the flue gas pipeline 16 can be filtered and intercepted, particles in the flue gas are prevented from entering the sampling tube 131, and the introduced gas can be filtered again by arranging the high-temperature filter 14.
When the device is used, all components are in an initial state, smoke flows through the smoke pipeline 16, then the peripheral jet pump works, smoke in the smoke pipeline 16 is filtered by the filter head 136 and then is introduced into the sampling pipe 131, after being transmitted through the heat tracing pipeline 11, the smoke is filtered by the high-temperature filter 14 and enters the measuring tank 2 through the high-temperature pneumatic valve 15, at the moment, the ammonia gas can be escaped by the gas analyzer 1, when the back blowing operation is needed, the external gas is introduced into the transmission pipe 132, and under the assistance of the one-way valve 133, the filter head 136 is back blown and cleaned, so that the surface permeability of the filter head 136 is ensured.
To sum up: this cement plant ammonia escape on-line monitoring system through setting up constant temperature heater 3, temperature controller 4, companion's heat pipeline 11, sweeps solenoid valve 12, gas sampling assembly 13, high temperature filter 14 and flue gas pipeline 16, has solved monitoring system in the sample step, can't carry out the blowback operation, and impurity in the flue gas blocks up sampling piece easily, and can not intelligent monitoring maintain monitoring gas temperature, has the problem of gaseous normal water condensation phenomenon.
Claims (6)
1. The utility model provides a cement plant ammonia escape on-line monitoring system, includes gas analysis appearance (1) and flue gas pipeline (16), its characterized in that: the detection end of the gas analyzer (1) is communicated with a measuring tank (2) through a pipeline, the air inlet end of the measuring tank (2) is respectively communicated with an air source electromagnetic valve (5) and a calibration valve (7) through a pipeline, a constant temperature heater (3) is arranged between the air source electromagnetic valve (5) and the measuring tank (2), the air inlet end of the air source electromagnetic valve (5) is communicated with a pressure regulating valve (6) through a pipeline, the air inlet end of the calibration valve (7) is communicated with a gas calibration flowmeter (8) through a pipeline, the surface of flue gas pipeline (16) runs through and installs gas sampling subassembly (13), the end of giving vent to anger of gas sampling subassembly (13) has heat tracing pipeline (11) through the pipeline intercommunication, the other end of heat tracing pipeline (11) has high temperature filter (14) through the pipeline intercommunication, install high temperature pneumatic valve (15) between high temperature filter (14) and measuring cell (2), the one end of high temperature pneumatic valve (15) has stop valve (10) through the pipeline intercommunication, the other end intercommunication of stop valve (10) has pressure switch (9).
2. The on-line monitoring system for ammonia slip in a cement plant of claim 1, wherein: the temperature controller (4) is fixedly arranged on the outer sides of the constant temperature heater (3), the high temperature filter (14), the heat tracing pipeline (11) and the gas sampling assembly (13), and the three-way pipe is fixedly arranged among the high temperature pneumatic valve (15), the calibration valve (7) and the measuring tank (2).
3. The on-line monitoring system for ammonia slip in a cement plant of claim 1, wherein: the gas sampling assembly (13) comprises a connecting pipe (135), the connecting pipe (135) is installed in an inner cavity of the flue gas pipeline (16) in a penetrating mode, a sampling pipe (131) is installed at one end, far away from the flue gas pipeline (16), of the connecting pipe (135), and a transmission pipe (132) is communicated with one side of the sampling pipe (131).
4. A cement plant ammonia slip on-line monitoring system according to claim 3, wherein: the bottom of the connecting pipe (135) is fixedly provided with the connecting pipe (135) and positioned in the inner cavity of the flue gas pipeline (16), and the sampling pipe (131) is communicated with the transmission pipe (132) through a one-way valve (133).
5. A cement plant ammonia slip on-line monitoring system according to claim 3, wherein: the side, opposite to the sampling tube (131), of the connecting tube (135) is fixedly connected with a sealing flange and communicated with the sampling tube through the sealing flange, and a purging electromagnetic valve (12) is fixedly sleeved on the surface of the transmission tube (132).
6. The on-line monitoring system for ammonia slip in a cement plant of claim 4, wherein: an electric heater (134) is fixedly sleeved on the surface of the connecting pipe (135), and the circulation direction of the one-way valve (133) is from right to left.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321439555.7U CN220455263U (en) | 2023-06-07 | 2023-06-07 | Cement plant ammonia escape on-line monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321439555.7U CN220455263U (en) | 2023-06-07 | 2023-06-07 | Cement plant ammonia escape on-line monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220455263U true CN220455263U (en) | 2024-02-06 |
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ID=89736647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321439555.7U Active CN220455263U (en) | 2023-06-07 | 2023-06-07 | Cement plant ammonia escape on-line monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220455263U (en) |
-
2023
- 2023-06-07 CN CN202321439555.7U patent/CN220455263U/en active Active
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