CN220552737U - Improved slurry density measuring device of desulfurization system - Google Patents
Improved slurry density measuring device of desulfurization system Download PDFInfo
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- CN220552737U CN220552737U CN202321696110.7U CN202321696110U CN220552737U CN 220552737 U CN220552737 U CN 220552737U CN 202321696110 U CN202321696110 U CN 202321696110U CN 220552737 U CN220552737 U CN 220552737U
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- 239000002002 slurry Substances 0.000 title claims abstract description 58
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 29
- 230000023556 desulfurization Effects 0.000 title claims abstract description 29
- 238000005070 sampling Methods 0.000 claims abstract description 96
- 238000002955 isolation Methods 0.000 claims abstract description 8
- 238000011010 flushing procedure Methods 0.000 claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 238000001739 density measurement Methods 0.000 claims description 12
- 238000012795 verification Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 13
- 229910052602 gypsum Inorganic materials 0.000 abstract description 5
- 239000010440 gypsum Substances 0.000 abstract description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 4
- 238000005299 abrasion Methods 0.000 abstract description 4
- 239000003546 flue gas Substances 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 10
- 239000000523 sample Substances 0.000 description 10
- 230000003009 desulfurizing effect Effects 0.000 description 8
- 238000010521 absorption reaction Methods 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000005251 gamma ray Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000003904 radioactive pollution Methods 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model provides an improved slurry density measuring device of a desulfurization system, belongs to the technical field of desulfurization, and particularly relates to measurement of slurry density. The method solves the problems of easy abrasion, easy corrosion, easy blockage, high cost and large long-term use deviation of the existing slurry density measuring method. The device comprises: the device comprises: the device comprises an isolation valve, a sampling tube body, a No. 1 pressure transmitter, a No. 2 pressure transmitter, a No. 3 pressure transmitter, a No. 4 pressure transmitter and a calibration tube body; a No. 1 pressure transmitter is arranged at the position, close to the top end, of the tank body of the sampling tube body, and a No. 2 pressure transmitter is arranged on the tank body below the No. 1 pressure transmitter; the size and the shape of the check tube body are identical to those of the sampling tube body; the device is mainly used for measuring the slurry density in a limestone-gypsum wet flue gas desulfurization system.
Description
Technical Field
The utility model relates to the technical field of desulfurization, in particular to measurement of slurry density.
Background
In a limestone-gypsum wet flue gas desulfurization system, the density of slurry in an absorption tower is a standard for measuring the start and stop of a gypsum dehydration system, and the accuracy of the density value measurement influences the quality of dehydrated gypsum and the operation of the desulfurization system.
The current slurry density measuring technology of the absorption tower mainly comprises a mass flowmeter, a differential pressure density measuring method and a gamma-ray radiation absorption measuring method.
The gamma-ray radiation absorption measurement method causes radioactive pollution to the surrounding environment, and in practical application, the densitometer is less in application because the radioactive instrument examination and approval procedure is complicated and the radioactive source is strictly managed and checked. The differential pressure density measurement method has the advantages of easy occurrence of defects of large measurement error, high environmental arrangement requirement and the like, and is not applied much.
Thus, the most widely used slurry density measuring instrument in flue gas desulfurization projects is the mass flowmeter. The working principle of the mass flowmeter is as follows: the measuring tube continuously vibrates at a certain resonant frequency under the action of the fluid, and the vibration frequency is changed along with the density change of the fluid, so that the measuring tube has certain regularity. The resonance frequency is thus a function of the density of the fluid, which can be obtained by measuring the resonance frequency of the tube.
The mass flowmeter has the defects that the mass flowmeter is directly contacted with measurement slurry, and the flowmeter is easy to wear and corrode; alloy materials are needed to be adopted in practical application, and the price is relatively high; systematic deviation can be generated during long-term operation, and periodic calibration is needed; in addition, because the vibrating tube is arranged inside, the blocking phenomenon is easy to occur during measurement.
Disclosure of Invention
The utility model provides an improved slurry density measuring device of a desulfurization system, which solves the problems of easy abrasion, easy corrosion, easy blockage, high cost and large long-term use deviation of a measuring probe existing in the existing slurry density measuring method.
The utility model relates to an improved slurry density measuring device of a desulfurization system, which has the following technical scheme:
the device comprises: the device comprises an isolation valve, a sampling tube body, a No. 1 pressure transmitter, a No. 2 pressure transmitter, a No. 3 pressure transmitter, a No. 4 pressure transmitter and a calibration tube body;
the sampling tube body is provided with a cylindrical tank body; the top end of the sampling tube body is communicated with the sampling tube through a sampling valve; the top end of the sampling tube body is communicated with the check tube body through an isolation valve; a No. 1 pressure transmitter is arranged at the position, close to the top end, of the tank body of the sampling tube body, and a No. 2 pressure transmitter is arranged on the tank body below the No. 1 pressure transmitter;
the size and the shape of the check tube body are identical to those of the sampling tube body; the check tube body is parallel to the sampling tube body, has the same height and is arranged in the same direction; the verification tube is characterized in that a tank body of the verification tube body is provided with a No. 3 pressure transmitter and a No. 4 pressure transmitter, the No. 3 pressure transmitter and the No. 1 pressure transmitter are arranged at the same height, and the No. 4 pressure transmitter and the No. 2 pressure transmitter are arranged at the same height.
Further, there is provided a preferred embodiment, said device further comprising a wash pipe, a sampling pipe wash valve, and a check pipe fill valve;
the flushing pipe is communicated with the top end of the sampling pipe body through a sampling pipe flushing valve;
the flushing pipe is communicated with the top end of the check pipe body through a check pipe water inlet valve. .
Further, there is provided a preferred embodiment wherein the sampling tube body is provided with a cone-shaped funnel, the funnel being provided at a lower portion of the can body of the sampling tube body.
Further, a preferred embodiment is provided, wherein the calibration tube body is also provided with a cone-shaped cone bucket, and the cone bucket is arranged at the lower part of the tank body of the calibration tube body.
Further, there is provided a preferred embodiment, the apparatus further comprising a No. 1 drain valve and a No. 2 drain valve;
the bottom of the cone hopper of the sampling tube body is communicated with the outside through a No. 1 discharge valve;
the bottom of the cone hopper of the check tube body is communicated with the outside through a No. 2 discharge valve.
Further, there is provided a preferred embodiment wherein the device further comprises a drain disposed below the No. 1 drain valve and the No. 2 drain valve.
Further, a preferred embodiment is provided wherein the radius of the canister of the sampling tube body is 0.05m and the height is 1.5m.
Further, a preferred embodiment is provided wherein the distance between the pressure transmitter No. 1 and the pressure transmitter No. 2 along the axial direction of the sampling tube body is 0.5m.
Further, a preferred embodiment is provided, wherein the sampling tube is provided with a sampling port, and the length of the pipeline between the sampling port and the sampling valve is not more than 0.5m.
The utility model has the following beneficial effects:
1. according to the improved slurry density measuring device of the desulfurization system, disclosed by the utility model, a sampling measuring mode is adopted, so that the problem that the probe is damaged due to abrasion caused by frequent scouring of the rapidly flowing measured liquid in a traditional measuring mode can be avoided; meanwhile, the measurement process is not interfered by the slurry stirrer arranged on the desulfurizing tower body and the oxidation air generated by the desulfurizing system, so that the error of the measurement result is reduced.
2. According to the improved slurry density measuring device for the desulfurization system, disclosed by the utility model, the slurry density is measured by adopting a static differential pressure method, so that the measurement accuracy is ensured, the negative influence of solid substances contained in the slurry is completely avoided, meanwhile, the deviation of the slurry density measurement at the same time is verified by utilizing the deviation of the water density, and the measurement accuracy is improved.
3. The improved slurry density measuring device of the desulfurization system is difficult to abrade and block in the measuring process, and the accuracy is not influenced by deposition or scaling; the device has the advantages of simple structure, low maintenance cost and long service life, and can replace the traditional measuring device.
4. The improved slurry density measuring device of the desulfurization system has the function of continuous measurement, the flow speed of a sample in a sampling tube is low, and a flushing valve is arranged for completing the flushing function.
The improved slurry density measuring device of the desulfurization system is suitable for measuring the slurry density in a limestone-gypsum wet flue gas desulfurization system.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed 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 utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of an improved desulfurization system slurry density measurement device in accordance with an embodiment of the present utility model;
in the above figures: 1. a flushing pipe; 2. a sampling tube flush valve; 3. checking a pipe water inlet valve; 4. an isolation valve; 5. a sampling valve; 6. a sampling tube; 7. a sampling tube body; 8. a pressure transmitter No. 1; 9. a pressure transmitter No. 2; 10. a pressure transmitter No. 3; 11. a pressure transmitter No. 4; 12. a check tube body; 13. a discharge valve 1; 14. a No. 2 discharge valve; 15. and a discharge ditch.
Detailed Description
In order to make the technical solution and the advantages of the present utility model more clear, the detailed description of the embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In a first embodiment, this embodiment is described with reference to fig. 1, and the embodiment provides an improved slurry density measurement device for a desulfurization system, which is specifically implemented as follows:
an improved desulfurization system slurry density measurement device, said device comprising:
a flushing pipe 1, a sampling pipe flushing valve 2, a check pipe water inlet valve 3, an isolation valve 4, a sampling valve 5, a sampling pipe 6, a sampling pipe body 7, a No. 1 pressure transmitter 8, a No. 2 pressure transmitter 9, a No. 3 pressure transmitter 10, a No. 4 pressure transmitter 11, a check pipe body 12, a No. 1 discharge valve 13, a No. 2 discharge valve 14 and a discharge ditch 15;
the sampling tube body 7 comprises a cylindrical tank body and a cone-shaped cone bucket, and the cone bucket is arranged at the lower part of the tank body; the top end of the sampling tube body 7 is connected with the flushing tube 1 through a sampling tube flushing valve 2; the top end of the sampling tube body 7 is connected with the sampling tube 6 through a sampling valve 5; the top end of the sampling tube body 7 is connected with the check tube body 12 through the check tube water inlet valve 3; the bottom of the cone hopper of the sampling tube body 7 is provided with a No. 1 discharge valve 13; a No. 1 pressure transmitter 8 is arranged at the position, close to the top end, of the tank body of the sampling tube body 7, and a No. 2 pressure transmitter 9 is arranged on the tank body below the No. 1 pressure transmitter 8 at a fixed distance;
the size and shape of the check tube body 12 and the sampling tube body 7 are completely the same; the check tube body 12 and the sampling tube body 7 are arranged in parallel at the same height, and the tank bodies of the check tube body 12 and the sampling tube body are the same in orientation; the top end of the check tube body 12 is connected with the flushing tube 1 through a sampling tube flushing valve 2; the bottom of the cone hopper of the check tube body 12 is provided with a No. 2 discharge valve 14; a tank body of the check tube body 12 is provided with a No. 3 pressure transmitter 10 and a No. 4 pressure transmitter 11, the No. 3 pressure transmitter 10 and the No. 1 pressure transmitter 8 are arranged at the same height, and the No. 4 pressure transmitter 11 and the No. 2 pressure transmitter 9 are arranged at the same height;
the bottoms of the discharge valve No. 1 13 and the discharge valve No. 2 14 are provided with a discharge groove 15.
In this embodiment, the sampling tube 6 is connected to a desulfurizing tower, and after the sampling valve 5 is opened, the slurry enters the sampling tube body 7 from the sampling tube 6.
In this embodiment, when the slurry to be measured is taken from the absorption tower, the sampling point of the sampling tube 6 must be within 1.5m of the center of the slurry stirrer at the lower part of the absorption tower.
In this embodiment, the calibration pipe body 12 can utilize the deviation of the water density to calibrate the deviation of the slurry density measurement at the same time, so as to improve the measurement accuracy.
In this embodiment, the measuring device adopts a sampling measurement mode to measure, and the working process is approximately as follows:
first, before sampling starts, the isolation valve 4 is closed to prevent slurry sample from flowing into the check tube body 12;
then, the sampling valve 5 is opened, the sampling tube 6 starts to sample, the desulfurizing tower slurry flows into the tank body of the sampling tube body 7 through the sampling tube 6, in the process, the slurry level in the tank body gradually rises, but large particles in the slurry are deposited into a cone hopper at the lower part of the tank body, so that abrasion of the large particles to a measuring probe can be reduced; at the same time of sampling, the water inlet valve 3 of the check pipe is opened, water is injected into the check pipe body 12 from the flushing pipe 1, and the water injection quantity is the same as the volume of the sampling quantity of the slurry of the desulfurizing tower;
then, when the sampling amount of the slurry in the desulfurizing tower and the water injection amount reach the specified required amount, closing the sampling valve 5 and the water inlet valve 3 of the check pipe;
then, measuring the pressure difference of the slurry in the sampling tube body 7 (desulfurizing tower) by using the pressure transmitters No. 1 and No. 2, and further obtaining the density of the slurry; meanwhile, the density of water in the calibration tube body 12 is obtained by using the pressure transmitters No. 3 10 and No. 4 pressure transmitters 11, and the actual density of water is known in advance, and the size and shape of the calibration tube body 12 and the sampling tube body 7 are the same, and the pressure transmitters 4 are also identical (same batch and same model) pressure transmitters, so that the deviation of the measured density of water and the actual density can be used for correcting the measured density of slurry so as to improve the accuracy of slurry density measurement; obtaining a corrected slurry density value, and completing the measurement of slurry density;
then, the discharge valve No. 1 13 and the discharge valve No. 2 14 are opened, the slurry sample and the water are discharged into the discharge ditch 15, and the valves are closed after the discharge is completed (the discharge can be completed after 30 seconds of delay generally);
finally, a flushing operation is performed, the sampling tube flushing valve 2 is opened, the sampling tube body 7 is flushed by the flushing tube 1, the No. 1 discharge valve 13 is opened after flushing, the waste water is discharged, and then the No. 1 discharge valve 13 is closed after time delay for 30 seconds, so that the next measurement is prepared.
In this embodiment, the measurement principle of the pressure transmitter is as follows
The two pressure transmitters are arranged at different liquid levels (namely measuring points) of slurry (or water), the liquid level difference of the two measuring points is generally about 0.5 meter, the liquid levels of the two measuring points are respectively h1 and h2, and then the pressures of the two measuring points are respectively P1 and P2;
according to the formula of the liquid pressure:
P＝ρgh；
then:
P 1 ＝ρgh 1 ，P 2 ＝ρgh 2 ；
the following steps are obtained:
in the formula: p is the pressure in the liquid, ρ is the liquid density, g is the gravitational acceleration (9.8 value), and h is the measuring point liquid level.
According to the device, the density is calculated by measuring the pressure of the slurry to be measured in the static state, so that the influence of dynamic pressure and the like easily received when the measuring device is arranged on the absorption tower or the flow pipeline is avoided, the physical condition required by the formula P=ρgh is completely met, and the accurate measurement of the density of the slurry can be completed.
In this embodiment, the measuring device has the following advantages:
1. the measuring device adopts a sampling measuring method, and can simultaneously measure the density value of the slurry and check the accuracy.
2. The sampling tube of the measuring device is designed into a conical structure, so that slurry substances with larger particles can be precipitated, and friction to the measuring probe is reduced.
3. When the measuring device measures the density value, the liquid is static, so that the measuring precision can be improved.
4. The measuring device is provided with the flushing valve and the flushing pipeline, and can flush the pipeline and the probe in time when each measurement is completed, so that the service life of the probe and the measuring precision of the device can be improved.
5. The measuring device is provided with an overflow port, and can timely check whether the measured liquid meets the measurement requirement.
In a further embodiment, the radius of the canister of the sampling tube body 7 is 0.05m and the height is 1.5m.
In a still further embodiment, the pressure transmitter No. 1 8 is spaced from the pressure transmitter No. 2 by a fixed distance of 0.5m.
In a further embodiment the length of the tubing between the port on the sampling tube 6 and the sampling valve 5 is not allowed to exceed 0.5m. I.e. the length of the pipe from the sampling valve 5 to the desulfurizing tower should be as short as possible.
The technical solution provided by the present utility model is described in further detail through several specific embodiments, so as to highlight the advantages and benefits of the technical solution provided by the present utility model, however, the above specific embodiments are not intended to be limiting, and any reasonable modification and improvement, reasonable combination of embodiments, equivalent substitution, etc. of the present utility model based on the spirit and principle of the present utility model should be included in the scope of protection of the present utility model.
Claims (9)
1. An improved desulfurization system slurry density measurement device, said device comprising: the device comprises an isolation valve (4), a sampling valve (5), a sampling tube (6), a sampling tube body (7), a No. 1 pressure transmitter (8), a No. 2 pressure transmitter (9), a No. 3 pressure transmitter (10), a No. 4 pressure transmitter (11) and a calibration tube body (12);
the sampling tube body (7) is provided with a cylindrical tank body; the top end of the sampling tube body (7) is communicated with the sampling tube (6) through a sampling valve (5); the top end of the sampling tube body (7) is communicated with the check tube body (12) through an isolation valve (4); a No. 1 pressure transmitter (8) is arranged at the position, close to the top end, of the tank body of the sampling tube body (7), and a No. 2 pressure transmitter (9) is arranged on the tank body below the No. 1 pressure transmitter (8);
the size and the shape of the check tube body (12) are identical with those of the sampling tube body (7); the check tube body (12) is parallel to the sampling tube body (7), has the same height and is arranged in the same direction; the verification tube is characterized in that a tank body of the verification tube body (12) is provided with a No. 3 pressure transmitter (10) and a No. 4 pressure transmitter (11), the No. 3 pressure transmitter (10) and the No. 1 pressure transmitter (8) are arranged at the same height, and the No. 4 pressure transmitter (11) and the No. 2 pressure transmitter (9) are arranged at the same height.
2. An improved desulfurization system slurry density measurement device in accordance with claim 1, further comprising a flush tube (1), a sampling tube flush valve (2) and a check tube inlet valve (3);
the flushing pipe (1) is communicated with the top end of the sampling pipe body (7) through a sampling pipe flushing valve (2);
the flushing pipe (1) is communicated with the top end of the check pipe body (12) through a check pipe water inlet valve (3).
3. An improved desulfurization system slurry density measuring device according to claim 2, characterized in that said sampling tube body (7) is provided with a cone-shaped cone hopper which is provided in the lower part of the tank of said sampling tube body (7).
4. An improved desulfurization system slurry density measuring device in accordance with claim 3, wherein said calibration tube body (12) is also provided with a cone-shaped cone hopper disposed at the lower portion of the tank of said calibration tube body (12).
5. An improved desulfurization system slurry density measurement device in accordance with claim 4, further comprising a No. 1 discharge valve (13) and a No. 2 discharge valve (14);
the bottom of the cone hopper of the sampling tube body (7) is communicated with the outside through a No. 1 discharge valve (13);
the bottom of the cone hopper of the check tube body (12) is communicated with the outside through a No. 2 discharge valve (14).
6. An improved desulfurization system slurry density measurement device in accordance with claim 5, further comprising a discharge channel (15), said discharge channel (15) being disposed below said No. 1 discharge valve (13) and No. 2 discharge valve (14).
7. An improved desulfurization system slurry density measuring device in accordance with claim 6, wherein the radius of the tank of said sampling tube body (7) is 0.05m and the height is 1.5m.
8. The improved desulfurization system slurry density measurement device according to claim 7, characterized in that the distance between said pressure transmitter No. 1 (8) and said pressure transmitter No. 2 (9) along the axial direction of said sampling tube body (7) is 0.5m.
9. An improved desulfurization system slurry density measuring device according to claim 8, characterized in that said sampling tube (6) is provided with a sampling port, the length of the conduit between said sampling port and said sampling valve (5) being not more than 0.5m.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321696110.7U CN220552737U (en) | 2023-06-30 | 2023-06-30 | Improved slurry density measuring device of desulfurization system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321696110.7U CN220552737U (en) | 2023-06-30 | 2023-06-30 | Improved slurry density measuring device of desulfurization system |
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| CN220552737U true CN220552737U (en) | 2024-03-01 |
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| CN202321696110.7U Active CN220552737U (en) | 2023-06-30 | 2023-06-30 | Improved slurry density measuring device of desulfurization system |
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| Country | Link |
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| CN (1) | CN220552737U (en) |
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2023
- 2023-06-30 CN CN202321696110.7U patent/CN220552737U/en active Active
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