Absorption tower slurry PH and density measuring device

Abstract

The utility model discloses an absorption tower slurry PH and density measuring device which comprises an absorption tower, a first drainage pipe and a second drainage pipe which are communicated with the absorption tower are installed at the bottom of the absorption tower, and the first drainage pipe is connected with a first sampling pipe and connected to an inlet in the bottom of a first measuring tank through the first sampling pipe. An outlet in the top of the first measuring tank is connected with a first liquid outlet pipe and connected to a discharge pipe through the first liquid outlet pipe, a first PH meter is inserted into the top of the first measuring tank, the second drainage pipe is connected with a second sampling pipe and connected to an inlet in the bottom of the second measuring tank through the second sampling pipe, and an outlet in the top of the second measuring tank is connected with a second liquid outlet pipe. The second measuring tank is connected to the discharge pipe through a second liquid outlet pipe, and a second PH meter is inserted into the top of the second measuring tank. The slurry in the first measuring tank and the second measuring tank adopts a bottom-in and top-out mode, so that the drained slurry has stability, timeliness and representativeness, and the measurement accuracy of the first PH meter and the second PH meter is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to a device for measuring the pH and density of an absorption tower slurry. Background Technology

[0002] Currently, in limestone wet desulfurization systems, the pH of the absorber slurry is measured directly through openings in the tower; the density of the absorber slurry is measured using a direct-measurement densitometer installed on the outlet pipe of the slurry discharge pump. However, because gypsum particles and suspended solids in the slurry easily adhere to the electrodes, the pH meter exhibits slow response and large measurement errors after prolonged use. Furthermore, the high outlet flow velocity of the discharge pump causes severe wear on the densitometer due to particulate matter in the slurry, resulting in a short service life.

[0003] Therefore, a new solution is needed to address the above problems. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a device for measuring the pH and density of absorber slurry.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A device for measuring the pH and density of an absorption tower slurry includes an absorption tower. A first inlet pipe and a second inlet pipe are installed and connected to the bottom of the absorption tower. The first inlet pipe is connected to a first sampling pipe, which is also connected to the inlet at the bottom of a first measuring tank. A first outlet pipe is connected to the outlet at the top of the first measuring tank, which is also connected to a discharge pipe. A first pH meter is inserted into the top of the first measuring tank. The second inlet pipe is connected to a second sampling pipe, which is also connected to the inlet at the bottom of a second measuring tank. A second outlet pipe is connected to the outlet at the top of the second measuring tank, which is also connected to the discharge pipe. A second pH meter is inserted into the top of the second measuring tank.

[0007] Furthermore, a first valve is installed on the first sampling tube, and a second valve is installed on the second sampling tube.

[0008] Furthermore, a first flushing pipe is connected to the inlet at the bottom of the first measuring tank, and a ninth valve is installed on the first flushing pipe.

[0009] Furthermore, a second flushing pipe is connected to the inlet at the bottom of the second measuring tank, and a tenth valve is installed on the second flushing pipe.

[0010] Furthermore, the first drainage tube is connected to a first connecting tube, and is connected to a third sampling tube through the first connecting tube. A density meter is installed on the third sampling tube. The third sampling tube is connected to a third outlet tube, and is connected to a discharge tube through the third outlet tube. The second drainage tube is connected to a second connecting tube, and is connected to the third sampling tube through the second connecting tube. A seventh valve is installed on the first connecting tube, and an eighth valve is installed on the second connecting tube.

[0011] Furthermore, a third valve is installed on the third sampling tube.

[0012] Furthermore, a perforated plate is installed on the third sampling tube.

[0013] Furthermore, the third sampling tube is connected to a third connecting tube on one side of the densitometer and is connected to the discharge tube through the third connecting tube. A sixth valve is installed on the third connecting tube. The third sampling tube is connected to a third flushing tube on the other side of the densitometer, and an eleventh valve is installed on the third flushing tube.

[0014] Furthermore, the third flushing tube is also connected to the first sampling tube, which is connected to a first connecting tube and then connected to the discharge tube. A fourth valve is installed on the first connecting tube.

[0015] Furthermore, the third flushing tube is also connected to the second sampling tube, the second sampling tube is connected to the second connecting tube, and is connected to the discharge tube through the second connecting tube, and a fifth valve is installed on the second connecting tube.

[0016] The beneficial effects of this utility model are:

[0017] 1. In this utility model, by setting up two slurry pH measurement pipelines, on the one hand, it can prevent the situation where one of the slurry pH measurement pipelines cannot measure pH due to maintenance or flushing, thus ensuring the pH measurement needs; on the other hand, the two slurry pH measurement pipelines can be used separately or in combination, and when used in combination, the measured values ​​can be calibrated against each other.

[0018] 2. In this utility model, the slurry in the first and second measuring tanks adopts a bottom-in, top-out mode, which makes the slurry drawn out stable, timely and representative, ensuring the accuracy of the measurements of the first and second pH meters.

[0019] 3. In this utility model, the flow rate of the slurry in the third sampling tube is controlled by the third valve and the orifice plate, which reduces or slows down the wear on the densitometer, thereby improving the service life of the densitometer.

[0020] 4. In this utility model, by setting up a first flushing pipe, a second flushing pipe and a third flushing pipe, the electrodes of the first pH meter and the second pH meter are cleaned by the first flushing pipe and the second flushing pipe respectively, so as to ensure that the first pH meter and the second pH meter have sensitive measurement response and accurate measurement of slurry pH value; the third flushing pipe is used to clean the densitometer, so as to ensure that the densitometer has sensitive measurement response and accurate measurement of slurry density. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a device for measuring the pH and density of the absorber slurry in this embodiment.

[0022] Figure reference numerals: Absorption tower 1, First inlet pipe 2, Second inlet pipe 3, First sampling pipe 4, First measuring tank 5, First outlet pipe 6, Discharge pipe 7, First pH meter 8, Second sampling pipe 9, Second measuring tank 10, Second outlet pipe 11, Second pH meter 12, First connecting pipe 13, Second connecting pipe 14, Third sampling pipe 15, Third outlet pipe 16, First connecting pipe 17, Second connecting pipe 18, Third connecting pipe 19, First flushing pipe 20, Second flushing pipe 21, Third flushing pipe 22, First valve 23, Second valve 24, Third valve 25, Fourth valve 26, Fifth valve 27, Sixth valve 28, Seventh valve 29, Eighth valve 30, Ninth valve 31, Tenth valve 32, Eleventh valve 33, Twelfth valve 34, Thirteenth valve 35, Orifice plate 36, Density meter 37. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example: A device for measuring the pH and density of an absorber slurry, such as... Figure 1 As shown, the absorption tower 1 is included. The bottom of the absorption tower 1 is equipped with a first drainage pipe 2 and a second drainage pipe 3 connected to it. Considering the viscosity and corrosiveness of the limestone slurry, the first drainage pipe 2 and the second drainage pipe 3 are made of carbon steel rubber-lined pipes (materials can also be FIP or 2205).

[0025] Furthermore, such as Figure 1As shown, the first drainage pipe 2 is connected to the first sampling pipe 4, and is connected to the inlet at the bottom of the first measuring tank 5 through the first sampling pipe 4. The outlet at the top of the first measuring tank 5 is connected to the first liquid outlet pipe 6, and is connected to the discharge pipe 7 through the first liquid outlet pipe 6. That is, the slurry in the first measuring tank 5 adopts the bottom-in, top-out mode. The top of the first measuring tank 5 is connected to the first pH meter 8, which measures the pH value of the slurry in the first measuring tank 5 by direct insertion. The second drainage pipe 3 is connected to the second sampling pipe 9, and is connected to the inlet at the bottom of the second measuring tank 10 through the second sampling pipe 9. The outlet at the top of the second measuring tank 10 is connected to the second liquid outlet pipe 11, and is connected to the discharge pipe 7 through the second liquid outlet pipe 11. That is, the slurry in the second measuring tank 10 adopts the bottom-in, top-out mode. The top of the second measuring tank 10 is connected to the second pH meter 12, which measures the pH value of the slurry in the second measuring tank 10 by direct insertion. Among them, the first sampling tube 4, the second sampling tube 9, the first liquid outlet tube 6, the second liquid outlet tube 11, and the discharge tube 7 are all made of carbon steel rubber-lined tubes (the material can also be FIP or 2205).

[0026] The first drainage pipe 2, the first sampling pipe 4, and the first outlet pipe 6 are combined to form one slurry pH measurement pipeline, and the second drainage pipe 3, the second sampling pipe 9, and the second outlet pipe 11 are combined to form another slurry pH measurement pipeline. By setting up two slurry pH measurement pipelines, on the one hand, it can prevent the situation where one of the slurry pH measurement pipelines cannot measure pH due to maintenance or flushing, thus ensuring the pH measurement needs; on the other hand, the two slurry pH measurement pipelines can be used separately or in combination. When used in combination, the measured values ​​can be cross-calibrated.

[0027] By setting up the first measuring tank 5 and the second measuring tank 10, the first pH meter 8 and the second pH meter 12 can be installed. At the same time, the slurry in the first measuring tank 5 and the second measuring tank 10 adopts the bottom-in and top-out mode, so that the slurry is stable, timely and representative, ensuring the accuracy of the measurement by the first pH meter 8 and the second pH meter 12.

[0028] Furthermore, such as Figure 1 As shown, a first valve 23 is installed on the first sampling tube 4, and a second valve 24 is installed on the second sampling tube 9. By setting the first valve 23 and the second valve 24, and by adjusting the opening of the first valve 23 and the second valve 24, the flow rate of the slurry in the first sampling tube 4 and the second sampling tube 9 can be controlled respectively, thereby controlling the flow rate of the slurry injected into the first measuring tank 5 and the second measuring tank 10.

[0029] Furthermore, the inlet at the bottom of the first measuring tank 5 is connected to a first flushing pipe 20, and a ninth valve 31 is installed on the first flushing pipe 20. The inlet at the bottom of the second measuring tank 10 is connected to a second flushing pipe 21, and a tenth valve 32 is installed on the second flushing pipe 21. By using the first flushing pipe 20 and the ninth valve 31 in conjunction, flushing fluid can be injected into the first flushing pipe 20 to clean the first measuring tank 5 and the electrode of the first pH meter 8 installed on the first measuring tank 5. By using the second flushing pipe 21 and the tenth valve 32 in conjunction, flushing fluid can be injected into the second flushing pipe 21 to clean the second measuring tank 10 and the electrode of the second pH meter 12 installed on the second measuring tank 10. By cleaning the electrodes of the first pH meter 8 and the second pH meter 12, the sensitivity of the measurement response of the first pH meter 8 and the second pH meter 12 and the accuracy of the pH value measurement of the slurry are ensured.

[0030] The first flushing pipe 20 and the second flushing pipe 21 are made of carbon steel pipe.

[0031] Furthermore, such as Figure 1 As shown, the first drainage tube 2 is connected to the first connecting tube 13, and is connected to the third sampling tube 15 through the first connecting tube 13. A density meter 37 is installed on the third sampling tube 15. The third sampling tube 15 is connected to the third outlet tube 16, and is connected to the discharge tube 7 through the third outlet tube 16. The second drainage tube 3 is connected to the second connecting tube 14, and is connected to the third sampling tube 15 through the second connecting tube 14. A seventh valve 29 is installed on the first connecting tube 13, and an eighth valve 30 is installed on the second connecting tube 14.

[0032] By setting up a first connecting pipe 13 and a second connecting pipe 14, the first connecting pipe 13 connects the first drainage pipe 2 and the third sampling pipe 15, and the second connecting pipe 14 connects the second drainage pipe 3 and the third sampling pipe 15, thereby achieving multi-point drainage and mixed sampling of the slurry and ensuring the accuracy of slurry density measurement. By setting up a seventh valve 29 and an eighth valve 30, the flow rates from the first connecting pipe 13 and the second connecting pipe 14 into the third sampling pipe 15 are controlled by adjusting the opening of the seventh valve 29 and the eighth valve 30, respectively.

[0033] The third sampling tube 15, the third outlet tube 16, the first connecting tube 13, and the second connecting tube 14 are made of carbon steel rubber-lined tubing (materials can also be FIP or 2205). The densitometer 37 is a direct-measurement densitometer, which is installed on the third sampling tube 15 by flange connection.

[0034] Furthermore, a third valve 25 is installed on the third sampling tube 15. By adjusting the opening of the third valve 25, the flow rate of the slurry in the third sampling tube 15 is controlled, reducing or slowing down the wear on the density meter 37, thereby improving the service life of the density meter 37.

[0035] Furthermore, an orifice plate 36 is installed on the third sampling tube 15. The orifice plate 36 is used to control the flow rate of the slurry in the third sampling tube 15, reducing or slowing down the wear on the density meter 37, thereby improving the service life of the density meter 37.

[0036] Furthermore, the third sampling tube 15 is connected to a third connecting tube 19 on one side of the densitometer 37, and is connected to the discharge tube 7 through the third connecting tube 19. A sixth valve 28 is installed on the third connecting tube 19. The third sampling tube 15 is connected to a third flushing tube 22 on the other side of the densitometer 37. The third flushing tube 22 is made of carbon steel and is equipped with an eleventh valve 33. By using the third flushing tube 22 and the eleventh valve 33 in conjunction, flushing fluid can be injected into the third flushing tube 22 to clean the densitometer 37 and the orifice plate 36, so as to ensure the sensitive measurement response of the densitometer 37 and the accuracy of the slurry density measurement, and to ensure that the slurry can pass smoothly through the orifice plate 36 and avoid clogging of the orifice plate 36.

[0037] Furthermore, the third flushing pipe 22 is also connected to the first sampling pipe 4. A twelfth valve 34 is installed on the third flushing pipe 22 at the first sampling pipe 4. The first sampling pipe 4 is connected to a first connecting pipe 17, which is connected to the discharge pipe 7. A fourth valve 26 is installed on the first connecting pipe 17. The third flushing pipe 22 can be used to flush the first sampling pipe 4, and the flushed liquid is directly discharged to the discharge pipe 7 without passing through the first measuring tank 5, reducing contamination of the electrode of the first pH meter 8.

[0038] Furthermore, the third flushing pipe 22 is also connected to the second sampling pipe 9. A thirteenth valve 35 is installed on the third flushing pipe 22 at the second sampling pipe 9. The second sampling pipe 9 is connected to a second connecting pipe 18, which is connected to the discharge pipe 7. A fifth valve 27 is installed on the second connecting pipe 18. The third flushing pipe 22 can be used to flush the second sampling pipe 9, and the flushed liquid is directly discharged to the discharge pipe 7 without passing through the second measuring tank 10, reducing contamination of the electrode of the second pH meter 12.

[0039] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A device for measuring the pH and density of an absorber slurry, comprising an absorber (1), characterized in that, The bottom of the absorption tower (1) is equipped with a first drain pipe (2) and a second drain pipe (3) connected thereto. The first drain pipe (2) is connected to a first sampling pipe (4) and is connected to the inlet at the bottom of the first measuring tank (5) through the first sampling pipe (4). The outlet at the top of the first measuring tank (5) is connected to a first liquid outlet pipe (6) and is connected to the discharge pipe (7) through the first liquid outlet pipe (6). A first pH meter (8) is inserted into the top of the first measuring tank (5). The second drain pipe (3) is connected to a second sampling pipe (9) and is connected to the inlet at the bottom of the second measuring tank (10) through the second sampling pipe (9). The outlet at the top of the second measuring tank (10) is connected to a second liquid outlet pipe (11) and is connected to the discharge pipe (7) through the second liquid outlet pipe (11). A second pH meter (12) is inserted into the top of the second measuring tank (10).

2. The device for measuring the pH and density of an absorption tower slurry according to claim 1, characterized in that, A first valve (23) is installed on the first sampling tube (4), and a second valve (24) is installed on the second sampling tube (9).

3. The device for measuring the pH and density of an absorption tower slurry according to claim 1, characterized in that, The inlet at the bottom of the first measuring tank (5) is connected to a first flushing pipe (20), and a ninth valve (31) is installed on the first flushing pipe (20).

4. The device for measuring the pH and density of an absorption tower slurry according to claim 1, characterized in that, The inlet at the bottom of the second measuring tank (10) is connected to a second flushing pipe (21), and a tenth valve (32) is installed on the second flushing pipe (21).

5. The device for measuring the pH and density of an absorption tower slurry according to claim 1, characterized in that, The first drainage tube (2) is connected to the first connecting tube (13) and is connected to the third sampling tube (15) through the first connecting tube (13). A density meter (37) is installed on the third sampling tube (15). The third sampling tube (15) is connected to the third outlet tube (16) and is connected to the discharge tube (7) through the third outlet tube (16). The second drainage tube (3) is connected to the second connecting tube (14) and is connected to the third sampling tube (15) through the second connecting tube (14). A seventh valve (29) is installed on the first connecting tube (13), and an eighth valve (30) is installed on the second connecting tube (14).

6. The device for measuring the pH and density of an absorption tower slurry according to claim 5, characterized in that, A third valve (25) is installed on the third sampling tube (15).

7. The device for measuring the pH and density of an absorption tower slurry according to claim 5, characterized in that, A perforated plate (36) is installed on the third sampling tube (15).

8. The device for measuring the pH and density of an absorption tower slurry according to claim 5, characterized in that, The third sampling tube (15) is connected to a third connecting tube (19) on one side of the densitometer (37) and is connected to the discharge tube (7) through the third connecting tube (19). A sixth valve (28) is installed on the third connecting tube (19). The third sampling tube (15) is connected to a third flushing tube (22) on the other side of the densitometer (37). An eleventh valve (33) is installed on the third flushing tube (22).

9. The device for measuring the pH and density of an absorption tower slurry according to claim 8, characterized in that, The third flushing pipe (22) is also connected to the first sampling pipe (4), which is connected to the first connecting pipe (17) and connected to the discharge pipe (7) through the first connecting pipe (17). A fourth valve (26) is installed on the first connecting pipe (17).

10. The device for measuring the pH and density of an absorption tower slurry according to claim 8, characterized in that, The third flushing pipe (22) is also connected to the second sampling pipe (9), which is connected to the second connecting pipe (18) and connected to the discharge pipe (7) through the second connecting pipe (18). A fifth valve (27) is installed on the second connecting pipe (18).

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