CN202683067U - Continuous on-line measurement device for Potential of Hydrogen (pH) value and density of exhaust gas wet desulphurization parget slurry fluid - Google Patents
Continuous on-line measurement device for Potential of Hydrogen (pH) value and density of exhaust gas wet desulphurization parget slurry fluid Download PDFInfo
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- CN202683067U CN202683067U CN 201220383570 CN201220383570U CN202683067U CN 202683067 U CN202683067 U CN 202683067U CN 201220383570 CN201220383570 CN 201220383570 CN 201220383570 U CN201220383570 U CN 201220383570U CN 202683067 U CN202683067 U CN 202683067U
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Abstract
The utility model relates to a continuous on-line measurement device for Potential of Hydrogen (pH) value and density of exhaust gas wet desulphurization parget slurry fluid. The continuous on-line measurement device comprises an absorption tower (1), pH meters (5) and a densimeter (6). A hole is arranged in the tower wall at the bottom of the absorption tower (1), and a slurry fluid pipe (2) is led out to an earth pit (10) through the hole. Two pH meters (5) and the densimeter (6) are arranged on the slurry fluid pipe (2). One end of each pH meter (5) is provided with an inlet valve (11) and the other end of each pH meter (5) is provided with an outlet valve (12). The two pH meters (5) are connected in parallel to form a parallel circuit and then to be connected with the densimeter (6). A reflux pipeline of parget discharging system is canceled, and thus a pipeline system is simple and reliable. A parget discharging pump starts and stops according to the density of the absorption tower, and is free from continuous running. Therefore, energy consumption is lowered, attrition of a pump, system pipelines and the valves is reduced, and the service life is prolonged. The two pH meters (5) are in a parallel connection, and thus one of the pH meters (5) can be used as a standby pH meter.
Description
Technical field
The utility model relates to the environment protection desulphurization field, relates in particular to the continuous on-line measurement device of a kind of flue gas wet flue gas desulfurization gypsum slurry pH value and density.
Background technology
Coal burning flue gas desulfurization mainly adopts lime stone-gypsum wet sulfur removal technology at present, and the gypsum slurries in the absorption tower is carried by slurry pump and returned spraying layer continuation absorption SO
2Or deliver to dewatering system and produce gypsum.The density of gypsum slurries and pH value play vital effect to operation, the control of whole desulphurization system, therefore must carry out the on-line continuous measurement to gypsum slurries density and the pH value that discharge on the absorption tower.
Yet, traditional desulfurizer absorbing tower pH meter, densitometer all are that design is discharged on system's reflux line at gypsum, velocity of medium, flow that pH meter, densitometric measurement all need to control process carry out, need to adjust by valve, thereby so that cause the valve rate of wear because of valve throttle, pipeline, the frequent wear damage of densitometer, at valve, elbow, the frequent spillage of threeway place, the frequent leakage pollutes; Often turning down valve opening carries out throttling in order to reduce the densitometer wearing and tearing, often causes reflux line to stop up.And pH meter, densitometer be installed in gypsum and discharge on system's reflux line, monitors absorption tower density and pH value because guaranteeing continuous operation of gypsum discharge system, so that system arranges complexity; The gypsum system that discharges controls absorption tower densitometer gypsum discharge rate by pitch, causes reflux line flow velocity, changes in flow rate larger, needs adjust the valve pipe quick abrasion by pH meter, densitometer front intercept valve.
CN201819860U discloses a kind of flue gas wet flue gas desulfurization gypsum serum density and the continuous on-line measurement device of pH, comprise casing, case lid, densitometer and pH meter, casing is provided with slurry inlet and takes over and the slurries discharge connection, be provided with overflow pipe in the case, overflow pipe upper end import is positioned at the casing certain altitude, outside the logical case of lower end outlet; PH meter inserts in the case from case lid, and the electrode of pH meter lower end is lower than the import of overflow pipe at least at the case inner height; Densitometer is installed in wall box, and densitometric sensor gos deep in the case, and its position in case is lower than the import of overflow pipe at least.Slurries can not damage pH glass electrode and densitometer sensor in this device case, also can reduce the solid particle deposition, prevent from stopping up, so prolong service life, and are reliable, can record continuously gypsum slurries in line density and pH value.
CN102489144A discloses a kind of wet flue gas desulfurization absorption tower slurry pH meter, densimeter measurement device and assay method thereof, the invention belongs to the environment protection desulphurization field, comprise slurries trunk line in desulfurization island absorption tower, pH meter container, pH meter, densitometer and the desulfurization island absorption tower.
Although above-mentioned wet flue gas desulfurization absorption tower slurry pH meter, densimeter measurement device have improved the online rate of instrument and accuracy, have reduced the workload of field device maintenance, reduced energy consumption, this apparatus structure is complicated.In case and pH meter damages and can't use, and then affects the normal operation of whole desulphurization system.
The utility model content
For solving the problems of the technologies described above, the purpose of this utility model is to provide a kind of flue gas wet flue gas desulfurization gypsum slurry pH value and the continuous on-line measurement device of density, and this device has been cancelled gypsum and discharged system's reflux line, and pipe-line system is simple and reliable.The gypsum excavationg pump does not need continuous operation according to absorption tower density start and stop, reduces energy consumption, reduces pump, system pipeline, valve wearing and tearing, increases the service life.And can not affect the normal operation of whole desulphurization system.
For achieving the above object, the utility model adopts following technical scheme:
The continuous on-line measurement device of a kind of flue gas wet flue gas desulfurization gypsum slurry pH value and density comprises absorption tower, pH meter and densitometer, draws a slurry pipe that leads to trench in the tower wall perforate of bottom, described absorption tower; Be provided with two pH meters and densitometer at described slurry pipe; The two ends of two pH meters are provided with inlet valve and outlet valve respectively, link to each other with densitometer after being connected to form a shunt circuit with parallel way again.
At present, because slurry flow rate is higher in the pipeline, the pH electrode is is easily worn and torn by fluid erosion, and gypsum particle is fouling around electrode easily, and glass electrode is broken when serious, can't use; And the flushing water that is used for snaking is aimed at the pH electrode and is impacted also easy damaged electrode, causes and can't use, thereby cause the normal operation of whole desulphurization system.The continuous on-line measurement device of flue gas wet flue gas desulfurization gypsum slurry pH value of the present utility model and density has not only been cancelled gypsum and has been discharged system's reflux line, and pipe-line system is simple and reliable; And because two pH meters connect with parallel way, one of them pH meter then can play effect for subsequent use.As when one of them pH meter can't use, close inlet valve and the outlet valve at these pH meter two ends, open inlet valve and the outlet valve at another pH meter two ends, and can not make the normal operation of whole desulphurization system.
The tower wall perforate of 0.8 ~ 1.2m at the bottom of the distance absorbing tower of described slurry pipe is drawn; Preferably the tower wall perforate of 1.0m is drawn at the bottom of the distance absorbing tower.
Described slurry pipe is provided with entrance door near a side on absorption tower.
Be communicated with wash tub pipe between entrance door and shunt circuit, wash tub pipe is provided with pneumatic dish valve.
Described densitometer is provided with diaphragm valve near a side of trench.In order to adjust flux.
The beneficial effects of the utility model are:
(1) a kind of flue gas wet flue gas desulfurization gypsum slurry pH value provided by the utility model and the continuous on-line measurement device of density are simple in structure, and be reliable; Two pH meters can play effect for subsequent use, can not have influence on the normal operation of whole desulphurization system;
(2) a kind of flue gas wet flue gas desulfurization gypsum slurry pH value provided by the utility model and the continuous on-line measurement device of density can require control slurry flow rate, flow in strict accordance with densimeter measurement;
(3) a kind of flue gas wet flue gas desulfurization gypsum slurry pH value provided by the utility model and the continuous on-line measurement device of density have been cancelled gypsum discharge system reflux line, and pipe-line system is simple and reliable.The gypsum excavationg pump does not need continuous operation according to absorption tower density start and stop, reduces energy consumption, reduces pump, system pipeline, valve wearing and tearing, increases the service life.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is a kind of flue gas wet flue gas desulfurization gypsum slurry pH value and the continuous on-line measurement device of the density schematic diagram of the utility model embodiment one.
Wherein:
1---the absorption tower, 2---slurry pipe, 4---entrance door, 5---pH meter, 6---densitometer, 7---diaphragm valve, 8---Pneumatic butterfly valve, 9---wash tub pipe, 10---trench, 11---inlet valve, 12---outlet valve.
The specific embodiment
Embodiment one
Below in conjunction with accompanying drawing the utility model is described in detail, the continuous on-line measurement device of a kind of flue gas wet flue gas desulfurization gypsum slurry pH value and density, comprise absorption tower 1, pH meter 5 and densitometer 6, draw a slurry pipe 2 that leads to trench 10 in the tower wall perforate of 1 bottom, described absorption tower; Be provided with two pH meters 5 and densitometer 6 at described slurry pipe 2; The two ends of two pH meters 5 are equipped with inlet valve 11 and outlet valve 12, link to each other with densitometer 6 after being connected to form a shunt circuit with parallel way again.As shown in Figure 1.
At present, because slurry flow rate is higher in the pipeline, the pH electrode is is easily worn and torn by fluid erosion, and gypsum particle is fouling around electrode easily, and glass electrode is broken when serious, can't use; And the flushing water that is used for snaking is aimed at the pH electrode and is impacted also easy damaged electrode, causes and can't use, thereby cause the normal operation of whole desulphurization system.The continuous on-line measurement device of the flue gas wet flue gas desulfurization gypsum slurry pH value of present embodiment and density has not only been cancelled gypsum and has been discharged system's reflux line, and pipe-line system is simple and reliable; And because two pH meters connect with parallel way, one of them pH meter then can play effect for subsequent use.As when one of them pH meter can't use, close inlet valve and the outlet valve at these pH meter two ends, open inlet valve and the outlet valve at another pH meter two ends, and can not make the normal operation of whole desulphurization system.
The tower wall perforate of 0.8 ~ 1.2m at the bottom of 1 tower of distance absorption tower of described slurry pipe 2 is drawn, and preferably the tower wall perforate of 1.0m is drawn at the bottom of 1 tower of distance absorption tower.
Described slurry pipe 2 is provided with entrance door 4 near a side on absorption tower 1.
Be communicated with wash tub pipe 9 between entrance door 4 and shunt circuit, wash tub pipe 9 is provided with pneumatic dish valve 8.In order to pipeline is carried out periodic flushing.During flushing, close entrance door 4, open Pneumatic butterfly valve 8, in slurry pipe 2, introduce water (desulphurization system fresh water (FW)), just can wash pipeline.Flushing water flows into trench 10 after by pH meter and densitometer.
Described densitometer 6 is provided with diaphragm valve 7 near a side of trench 10.With adjust flux.
Claims (6)
1. a flue gas wet flue gas desulfurization gypsum slurry pH value and the continuous on-line measurement device of density, comprise absorption tower (1), pH meter (5) and densitometer (6), it is characterized in that, draw a slurry pipe (2) that leads to trench (10) in the tower wall perforate of described absorption tower (1) bottom; Be provided with two pH meters (5) and densitometer (6) at described slurry pipe (2); The two ends of two pH meters (5) are provided with inlet valve (11) and outlet valve (12) respectively, link to each other with densitometer (6) after being connected to form a shunt circuit with parallel way again.
2. the continuous on-line measurement device of flue gas wet flue gas desulfurization gypsum slurry pH value according to claim 1 and density is characterized in that, the tower wall perforate of described slurry pipe (2) 0.8 ~ 1.2m at the bottom of the tower of distance absorption tower (1) is drawn.
3. the continuous on-line measurement device of flue gas wet flue gas desulfurization gypsum slurry pH value according to claim 2 and density is characterized in that, the tower wall perforate of described slurry pipe (2) 1.0m at the bottom of the tower of distance absorption tower (1) is drawn.
4. according to claim 1 and 2 or 3 described flue gas wet flue gas desulfurization gypsum slurry pH values and the continuous on-line measurement device of density, it is characterized in that described slurry pipe (2) is provided with entrance door (4) near a side on absorption tower (1).
5. the continuous on-line measurement device of flue gas wet flue gas desulfurization gypsum slurry pH value according to claim 4 and density is characterized in that, is communicated with wash tub pipe (9) between entrance door (4) and shunt circuit, and wash tub pipe (9) is provided with pneumatic dish valve (8).
6. the continuous on-line measurement device of flue gas wet flue gas desulfurization gypsum slurry pH value according to claim 5 and density is characterized in that, described densitometer (6) is provided with diaphragm valve (7) near a side of trench (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220383570 CN202683067U (en) | 2012-08-03 | 2012-08-03 | Continuous on-line measurement device for Potential of Hydrogen (pH) value and density of exhaust gas wet desulphurization parget slurry fluid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220383570 CN202683067U (en) | 2012-08-03 | 2012-08-03 | Continuous on-line measurement device for Potential of Hydrogen (pH) value and density of exhaust gas wet desulphurization parget slurry fluid |
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| Publication Number | Publication Date |
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| CN202683067U true CN202683067U (en) | 2013-01-23 |
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| CN 201220383570 Expired - Lifetime CN202683067U (en) | 2012-08-03 | 2012-08-03 | Continuous on-line measurement device for Potential of Hydrogen (pH) value and density of exhaust gas wet desulphurization parget slurry fluid |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596332A (en) * | 2017-02-15 | 2017-04-26 | 北京北方节能环保有限公司 | Spray tower seriflux density measuring device by limestone method |
| CN108801850A (en) * | 2018-06-21 | 2018-11-13 | 国电环境保护研究院有限公司 | A kind of flue gas wet flue gas desulfurization gypsum slurries are in line density and pH value combined measurement device and measurement method |
| CN109297859A (en) * | 2018-11-29 | 2019-02-01 | 北京国电龙源环保工程有限公司 | Wet desulphurization device gypsum slurries density and pH measuring device and its application method |
| CN112326504A (en) * | 2020-10-28 | 2021-02-05 | 国电环境保护研究院有限公司 | Method and system for measuring density of gypsum slurry of composite desulfurization device |
-
2012
- 2012-08-03 CN CN 201220383570 patent/CN202683067U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106596332A (en) * | 2017-02-15 | 2017-04-26 | 北京北方节能环保有限公司 | Spray tower seriflux density measuring device by limestone method |
| CN108801850A (en) * | 2018-06-21 | 2018-11-13 | 国电环境保护研究院有限公司 | A kind of flue gas wet flue gas desulfurization gypsum slurries are in line density and pH value combined measurement device and measurement method |
| CN109297859A (en) * | 2018-11-29 | 2019-02-01 | 北京国电龙源环保工程有限公司 | Wet desulphurization device gypsum slurries density and pH measuring device and its application method |
| CN109297859B (en) * | 2018-11-29 | 2024-02-09 | 国能龙源环保有限公司 | Method for using gypsum slurry density and pH measuring device of wet desulfurization device |
| CN112326504A (en) * | 2020-10-28 | 2021-02-05 | 国电环境保护研究院有限公司 | Method and system for measuring density of gypsum slurry of composite desulfurization device |
| CN112326504B (en) * | 2020-10-28 | 2023-09-26 | 国电环境保护研究院有限公司 | Method and system for measuring gypsum slurry density of composite desulfurization device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee after: DATANG ENVIRONMENT INDUSTRY GROUP Co.,Ltd. Address before: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee before: DATANG TECHNOLOGY INDUSTRY GROUP CO.,LTD. Address after: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee after: DATANG TECHNOLOGY INDUSTRY GROUP CO.,LTD. Address before: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee before: DATANG TECHNOLOGY INDUSTRY Co.,Ltd. Address after: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee after: DATANG TECHNOLOGY INDUSTRY Co.,Ltd. Address before: 100097 Beijing Haidian District Zizhuyuan Road No. 120 Patentee before: CHINA DATANG GROUP ENVIRONMENT TECHNOLOGY CO.,LTD. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |