CN204989087U - Desulfurization absorption tower pH value measuring device - Google Patents
Desulfurization absorption tower pH value measuring device Download PDFInfo
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- CN204989087U CN204989087U CN201520704146.4U CN201520704146U CN204989087U CN 204989087 U CN204989087 U CN 204989087U CN 201520704146 U CN201520704146 U CN 201520704146U CN 204989087 U CN204989087 U CN 204989087U
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- rotary separator
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- absorbing tower
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Abstract
The utility model relates to a desulfurization absorption tower pH value measuring device, including logical pond of measured flow and rotation type separator, the pond below is led to in measured flow to vertical connection of rotation type separator to being connected with the absorption tower, being equipped with filtering component between logical pond of measured flow and the rotation type separator, measured flow leads to the pond and is connected with the PH meter, behind the gypsum thick liquid entering rotation type separator in the absorption tower, detach the particulate matter through the centrifugation of rotation type separator, the gypsum thick liquid of detaching behind the particulate matter upwards flows into the logical pond of measured flow to by PH instrumentation volume pH value. Compared with the prior art, the utility model discloses a particulate matter in the rotation type separator separation gypsum thick liquid to the rotation type separator is vertical to be set up in measured flow and leads to the pond below, and cooperation filtering component, particulate matter can not get into measured flow and lead to the pond, thereby the obvious pure degree that gets into measured flow and lead to gypsum thick liquid in the pond that improves has improved the life of PH electrode.
Description
Technical field
The utility model relates to desulfur technology, especially relates to a kind of desulfuration absorbing tower pH value measurement mechanism.
Background technology
Coal-fired power plant's wet process of FGD is the desulfur technology that current desulfurization degree is the highest, is most widely used.Using lime stone slurry as desulfurizing agent, to the sulphuric dioxide spray washing contained by flue gas in absorption tower, the sulphuric dioxide reaction in flue gas is made to generate calcium sulphate, the key point of this reaction is the formation of calcium ion, and the formation of calcium ion is relevant with hydrionic concentration, and the pH value optimum range of slurries is 5.8-6.2, be beneficial to most lime stone slurry and be decomposed to form calcium ion, so control the pH value of slurries well, desulfurization can be realized and automatically control for slurry, can ensure that the efficiency of desulfurization is in optimum condition.Chinese patent CN202683066U discloses a kind of pH value of slurry of desulfuration absorption tower, density measuring equipment, comprise absorption tower, pH meter and densitometer, wherein, the slurry pipe that one leads to trench is drawn in tower wall perforate bottom absorption tower, slurry pipe is provided with two pH meters and densitometer in order, and the horizontal level at densitometer place is higher than the horizontal level at pH meter place.But have the characteristics such as temperature is high, particle is many, easy deposition due to gypsum slurries in power plant desulfurization absorption tower, cause there occurs in unit running process and measure inaccurate, electrode is often broken, the even series of problems such as line clogging.Therefore a lot of power plant is specially provided with wash-down water in addition in the sampling and blowoff line of PH measuring device, and has installed filter screen to alleviate the abrasion condition of particle to electrode.But just there will be filter net jam after running a period of time, considerably increase the frequency of maintenance of equipment.
Related documents also discloses and strengthens sampling line caliber, installs filter screen additional, increases wash-down water and improves the methods such as flow cell.These methods can alleviate measurement problem, but all come with some shortcomings part, and the wearing and tearing such as installing filter screen rear electrode additional decrease, but for the problem such as maintenance times showed increased of filter screen; Or propose in some articles to keep wash-down water often to open in operation, although equipment life extends, filter screen is not easy to have blocked up, and measures numerical value and is forbidden and cause the waste of water resource.
Utility model content
The purpose of this utility model be exactly in order to overcome above-mentioned prior art exist defect and a kind of desulfuration absorbing tower pH value measurement mechanism is provided.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of desulfuration absorbing tower pH value measurement mechanism, comprise and measure flow cell and rotary separator, described rotary separator is vertically connected to be measured below flow cell, and be connected with absorption tower, be provided with filter assemblies between described measurement flow cell and rotary separator, described measurement flow cell is counted with PH and is connected.
Described filter assemblies comprises orifice plate and filter screen, described orifice plate and filter screen by lower from set gradually, described orifice plate central authorities are provided with a through hole.
The diameter of described through hole is 60% ~ 70% of described orifice plate diameter.
The diameter of described through hole is 2/3 of described orifice plate diameter.
Be provided with stopple coupon between described rotary separator and absorption tower, this stopple coupon is connected with rotary separator by flange.
Described measurement mechanism also comprises run-down pipe, and one end of described run-down pipe is connected with measurement flow cell, and the other end is connected with absorption tower, is back in absorption tower for gypsum slurries unnecessary in guiding measuring flow cell.
Described rotary separator is provided with the electrode slot for connecting PH meter, and the setting position of described electrode slot is lower than described run-down pipe and the link position measuring flow cell.
Described measurement mechanism also comprises the blow-off pipe for discharged particle, and this blow-off pipe vertically arranges and is connected with the bottom of rotary separator, is provided with blowoff valve between described rotary separator and blow-off pipe.
Described measurement mechanism also comprises rinsing module, and this rinsing module comprises wash-down water Electrically operated gate and washpipe, and the output terminal of described washpipe is connected with rotary separator, and input end is connected with water supply line by wash-down water Electrically operated gate.
The output terminal of described washpipe is also connected with measurement flow cell.
Compared with prior art, the utility model has the following advantages:
1) particle in rotary separator separation gypsum slurries is adopted, and rotary separator is vertically arranged to be measured below flow cell, complement filter assembly, particle can not enter measurement flow cell, thus significantly improve the degree of purity entering and measure gypsum slurries in flow cell, improve the serviceable life of PH electrode.
2) orifice plate can ensure that larger particles can not enter filter screen and measure in flow cell in detachment process, and then protects filter screen, greatly reduces the maintenance times of filter screen.
3) on orifice plate, the diameter of through hole is 2/3 of orifice plate diameter, coordinates centrifugation, is that the particle that interception well can be had between 1.08g/ml to 1.31g/ml to be close to rotary separator inwall clashes into filter screen in gypsum slurries density.
4) run-down pipe can make gypsum slurries in measurement flow cell recycle, and has saved resource.
5) rinsing module can rinse rotary separator and measurement flow cell, filter assemblies easily.
6) this apparatus structure is simple, is centrally connected by flange, and gypsum slurries also constantly can enter measurement mechanism under gravity, simple and reliable.
Accompanying drawing explanation
Fig. 1 is front elevational schematic of the present utility model;
Fig. 2 is schematic side view of the present utility model.
Wherein: 1, blowoff valve, 2, rotary separator, 3, orifice plate, 4, filter screen, 5, electrode slot, 6, measure flow cell, 7, run-down pipe, 8, stopple coupon, 9, washpipe, 10, wash-down water Electrically operated gate.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.The present embodiment is implemented premised on technical solutions of the utility model, give detailed embodiment and concrete operating process, but protection domain of the present utility model is not limited to following embodiment.
A kind of desulfuration absorbing tower pH value measurement mechanism, as depicted in figs. 1 and 2, comprise and measure flow cell 6 and rotary separator 2, rotary separator 2 is vertically connected to be measured below flow cell 6, and be connected with absorption tower, measure between flow cell 6 and rotary separator 2 and be provided with filter assemblies, measurement flow cell 6 is counted with PH and is connected; After gypsum slurries in absorption tower enters rotary separator 2, through the centrifugation removing particle of rotary separator 2, the gypsum slurries after removing particle upwards flows into measures flow cell 6, and by PH measurement amount pH value.
Filter assemblies comprises orifice plate 3 and filter screen 4, orifice plate 3 and filter screen 4 by lower from set gradually, orifice plate 3 central authorities offer a through hole, and the diameter of through hole is 60% ~ 70% of orifice plate 3 diameter.
Stopple coupon 8 is provided with between rotary separator 2 and absorption tower, this stopple coupon 8 is connected with rotary separator 2 by flange, concrete, one end of stopple coupon 8 is connected with the bottom on absorption tower or portion on the lower side, middle part or the approximate center of the other end and rotary separator 2 are connected, portion on the lower side wherein and approximate center do not need too high degree of accuracy, and existing technical staff sees that this can choose expectedly suitable link position after describing.
Measurement mechanism also comprises run-down pipe 7, and one end of run-down pipe 7 is connected with measurement flow cell 6, and the other end is connected with absorption tower, is back in absorption tower for gypsum slurries unnecessary in guiding measuring flow cell 6.Rotary separator 2 is provided with the electrode slot 5 for connecting PH meter, and the setting position of electrode slot 5 is lower than run-down pipe 7 and the link position measuring flow cell 6, PH meter mainly comprises interconnective PH electrode and secondary instrument, and wherein PH electrode is inserted in electrode slot 5.
This external pelivimetry flow cell 6 is also provided with viewport, and operations staff scene can be facilitated to make an inspection tour.
Measurement mechanism also comprises the blow-off pipe for discharged particle, and this blow-off pipe vertically arranges and is connected with the bottom of rotary separator 2, is provided with blowoff valve 1 between rotary separator 2 and blow-off pipe.
Measurement mechanism also comprises rinsing module, and this rinsing module comprises wash-down water Electrically operated gate 10 and washpipe 9, and the output terminal of washpipe 9 is connected with rotary separator 2, and input end is connected with water supply line by wash-down water Electrically operated gate 10.The output terminal of washpipe 9 is also connected with measurement flow cell 6.
In operational process, first gypsum slurries enters the rotary separator 2 vertically installed by stopple coupon 8, particle larger in gypsum slurries, the inwall being attached to rotary separator 2 under the influence of centrifugal force rotates, then discharge along bottom blow-off pipe, and through separation a part of gypsum slurries upwards through filter screen 5 filter after enter measure flow cell 6, finally get back in absorption tower along run-down pipe 7.Enter most of particle contained in the gypsum slurries measuring flow cell 6 to be removed, improve the serviceable life of PH electrode.
The application make use of rotary separator 2 effectively can be separated this principle of the larger particle of gypsum slurries Midst density, coordinate the filter screen 5 in suitable aperture, ensure that entering the gypsum slurries measuring flow cell 6 meets the job requirement of PH electrode, improves the serviceable life of PH electrode.Adopt run-down pipe 7 and the blow-off pipe of vertically design simultaneously, decrease the possibility that gypsum slurries occurs to block in the duct, decrease frequency of maintenance.In rotary separator 2 work process, orifice plate 3 can effectively prevent larger particles from contacting filter screen 4 because of fluid matasomatism two, and then protects filter screen.
Claims (10)
1. a desulfuration absorbing tower pH value measurement mechanism, it is characterized in that, comprise and measure flow cell (6) and rotary separator (2), described rotary separator (2) is vertically connected to measures flow cell (6) below, and be connected with absorption tower, be provided with filter assemblies between described measurement flow cell (6) and rotary separator (2), described measurement flow cell (6) is counted with PH and is connected.
2. a kind of desulfuration absorbing tower pH value measurement mechanism according to claim 1, it is characterized in that, described filter assemblies comprises orifice plate (3) and filter screen (4), described orifice plate (3) and filter screen (4) by lower from set gradually, described orifice plate (3) central authorities offer a through hole.
3. a kind of desulfuration absorbing tower pH value measurement mechanism according to claim 2, is characterized in that, the diameter of described through hole is 60% ~ 70% of described orifice plate (3) diameter.
4. a kind of desulfuration absorbing tower pH value measurement mechanism according to claim 3, is characterized in that, the diameter of described through hole is 2/3 of described orifice plate (3) diameter.
5. a kind of desulfuration absorbing tower pH value measurement mechanism according to claim 1, it is characterized in that, be provided with stopple coupon (8) between described rotary separator (2) and absorption tower, this stopple coupon (8) is connected with rotary separator (2) by flange.
6. a kind of desulfuration absorbing tower pH value measurement mechanism according to claim 1, it is characterized in that, described measurement mechanism also comprises run-down pipe (7), and one end of described run-down pipe (7) is connected with measurement flow cell (6), and the other end is connected with absorption tower.
7. a kind of desulfuration absorbing tower pH value measurement mechanism according to claim 6, it is characterized in that, described rotary separator (2) is provided with the electrode slot (5) for connecting PH meter, and the setting position of described electrode slot (5) is lower than described run-down pipe (7) and the link position measuring flow cell (6).
8. according to a kind of desulfuration absorbing tower pH value measurement mechanism in claim 1-7 described in arbitrary, it is characterized in that, described measurement mechanism also comprises the blow-off pipe for discharged particle, this blow-off pipe vertically arranges and is connected with the bottom of rotary separator (2), is provided with blowoff valve (1) between described rotary separator (2) and blow-off pipe.
9. a kind of desulfuration absorbing tower pH value measurement mechanism according to claim 1, it is characterized in that, described measurement mechanism also comprises rinsing module, this rinsing module comprises wash-down water Electrically operated gate (10) and washpipe (9), the output terminal of described washpipe (9) is connected with rotary separator (2), and input end is connected with water supply line by wash-down water Electrically operated gate (10).
10. a kind of desulfuration absorbing tower pH value measurement mechanism according to claim 9, is characterized in that, the output terminal of described washpipe (9) is also connected with measurement flow cell (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520704146.4U CN204989087U (en) | 2015-09-11 | 2015-09-11 | Desulfurization absorption tower pH value measuring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520704146.4U CN204989087U (en) | 2015-09-11 | 2015-09-11 | Desulfurization absorption tower pH value measuring device |
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| CN204989087U true CN204989087U (en) | 2016-01-20 |
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| CN201520704146.4U Active CN204989087U (en) | 2015-09-11 | 2015-09-11 | Desulfurization absorption tower pH value measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106066382A (en) * | 2016-07-04 | 2016-11-02 | 新疆电力建设调试所 | PH value parameter measuring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106066382A (en) * | 2016-07-04 | 2016-11-02 | 新疆电力建设调试所 | PH value parameter measuring device |
| CN106066382B (en) * | 2016-07-04 | 2019-02-01 | 新疆电力建设调试所 | PH value parameter measuring device |
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