Detection method and desulfurizing absorption tower measuring device

Abstract

The invention relates to the technical field of desulfurizing absorption towers, in particular to a detection method and a desulfurizing absorption tower measuring device.The detection method comprises the steps that data P1 of a first pressure transmitter installed at the height h1 is read; the method comprises the following steps: reading data P2 of a second pressure transmitter mounted at the height of h2; calculation is carried out according to the formula that rho1 = (P2-P1) / g (h1-h2), and rho1 is used for calculating the density of the measured liquid. According to the detection method and the desulfurizing absorption tower measuring device, the first pressure transmitter and the second pressure transmitter are installed on the liquid storage equipment to measure the pressure of the liquid at different heights, then the density of the liquid in the liquid storage equipment is calculated through two pressure readings, and the liquid level height of the liquid can be further obtained.

Description

Technical Field

[0001] The invention relates to the technical field of desulfurization absorption towers, and in particular to a detection method and a desulfurization absorption tower measuring device. Background Art

[0002] The existing monitoring of the internal data of the desulfurization absorption tower is set separately, and there are multiple monitoring items, including measuring pH, density, liquid level, etc. The multiple monitoring items are set separately, and are currently directly installed in the tower wall of the absorption tower. When the absorption tower is running, it is not convenient for maintenance; and it is impossible to achieve full automatic calibration. When the measured value is inaccurate, there is no automatic calibration function, which is not convenient for parameter monitoring. For this reason, the present invention provides a detection method and a desulfurization absorption tower measurement device. Summary of the invention

[0003] In view of the problems existing in the above-mentioned existing detection methods and desulfurization absorption tower measuring devices, the present invention is proposed.

[0004] Therefore, one of the objects of the present invention is to provide a detection method, which object is to provide a method for detecting internal data of a liquid storage device.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a detection method, comprising:

[0006] By reading the data P1 of the first pressure transmitter installed at a height of h1;

[0007] By reading the data P2 of the second pressure transmitter installed at a height of h2;

[0008] Calculate using the following formula:

[0009] ρ1=(P2-P1) / g(h1-h2)

[0010] ρ1 is the calculated density of the liquid being measured.

[0011] As a preferred embodiment of the detection method of the present invention, the calculation is performed by the following formula:

[0012] H=h1+(P1 / ρ1g)

[0013] H is the liquid level height of the measured liquid.

[0014] As a preferred solution of the detection method of the present invention, wherein: by installing a densitometer and reading the data ρ2 of the densitometer,

[0015] By comparing the values ​​of ρ1 and ρ2, it is determined whether the first pressure transmitter and the second pressure transmitter are faulty;

[0016] The judgment formula is as follows:

[0017] K<|ρ1-ρ2|

[0018] Where K is a constant.

[0019] As a preferred solution of the detection method of the present invention, when the judgment formula is satisfied, the first pressure transmitter and the second pressure transmitter are backwashed.

[0020] As a preferred solution of the detection method of the present invention, the liquid flowing through the first pressure transmitter and the second pressure transmitter is recovered, and a plurality of pH meters are provided to monitor the pH value in real time.

[0021] The beneficial effect of this method is as follows: by installing a first pressure transmitter and a second pressure transmitter on the liquid storage device to measure the liquid pressure at different heights, the density of the liquid in the liquid storage device is calculated by the two pressure readings, and the liquid level height of the liquid can be further obtained.

[0022] Another object of the present invention is to provide a desulfurization absorption tower measuring device, which aims to provide a desulfurization absorption tower measuring device that is convenient for measuring multiple data at the same time.

[0023] In order to solve the above technical problems, the present invention provides the following technical solutions: a desulfurization absorption tower measuring device, comprising an absorption tower body;

[0024] A pressure measuring unit, comprising a three-way pipe arranged in the absorption tower body, two pipes of the three-way pipe are connected to the absorption tower body, and a first pressure transmitter and a second pressure transmitter are respectively installed on the pipe body of the three-way pipe connected to the absorption tower body;

[0025] The pH measuring unit comprises a measuring cylinder connected to the other pipe body of the three-way pipe, and a pH meter arranged on the measuring cylinder; and

[0026] The density measuring unit comprises a density meter arranged on the tube body of the three-way pipe connected to the measuring cylinder.

[0027] As a preferred solution of the desulfurization absorption tower measuring device of the present invention, valve assemblies are provided between the first pressure transmitter, the second pressure transmitter and the absorption tower body, and between the density meter and the measuring cylinder.

[0028] As a preferred solution of the desulfurization absorption tower measuring device of the present invention, wherein: the pH meter is provided with two;

[0029] An overflow port is arranged on the top of the measuring cylinder, and both the overflow port and the bottom of the measuring cylinder are connected to the ditch.

[0030] As a preferred solution of the desulfurization absorption tower measuring device of the present invention, wherein: the density measuring unit further includes a flushing pipeline;

[0031] The flushing pipeline and the density meter are installed on the same pipe body of the three-way pipeline.

[0032] As a preferred solution of the desulfurization absorption tower measuring device of the present invention, filters are provided at the connection parts between the flushing pipe and the three-way pipe and the absorption tower body.

[0033] The beneficial effects of the present invention are as follows: the pressures at different heights of the absorption tower body can be detected by the first pressure transmitter and the second pressure transmitter, and then the density and height of the liquid inside the absorption tower body can be calculated. At the same time, by comparing the density values ​​detected by the density meter with the calculated density values, the detection values ​​of the first pressure transmitter and the second pressure transmitter can be reversely verified and calibrated. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0035] Figure 1 It is a schematic diagram of the overall structure of the detection method and the desulfurization absorption tower measuring device of the present invention. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to an embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0039] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0040] Example 1, reference Figure 1 , as a first embodiment of the present invention, provides a detection method, the method comprising:

[0041] S1. By reading the data P1 of the first pressure transmitter 202 installed at a height of h1;

[0042] A conduit is installed in the liquid storage device, and a first pressure transmitter 202 is installed on the conduit. When the liquid in the liquid storage device passes through the conduit, the first pressure transmitter 202 can read the pressure P1 of the liquid storage device at a height h1 there.

[0043] S2. By reading the data P2 of the second pressure transmitter 203 installed at a height of h2;

[0044] A second conduit is installed in the liquid storage device, and a second pressure transmitter 203 is installed on the conduit. When the liquid in the liquid storage device passes through the conduit, the first pressure transmitter 202 can read the pressure P2 of the liquid storage device at a height h2, wherein the heights of h1 and h2 are inconsistent, and the height difference is preferably 0.5-1m.

[0045] S3. The density of the liquid to be measured in the liquid storage device is calculated by the installation height and detection data of the first pressure transmitter 202 and the second pressure transmitter 203;

[0046] The calculation formula is as follows:

[0047] ρ1=(P2-P1)g(h1-h2)

[0048] Among them, ρ1 is the density of the liquid being measured.

[0049] Furthermore, the following calculation is performed:

[0050] H=h1+(P1ρ1g)

[0051] Wherein, H is the liquid level height of the measured liquid.

[0052] At this time, the density and liquid level of the liquid in the liquid storage device can be obtained by installing the first pressure transmitter 202 and the second pressure transmitter 203, and there is no need to install density and liquid level detection devices in a separate liquid storage device.

[0053] Example 2, reference Figure 1, which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that:

[0054] S5. By installing the density meter 401, and reading the data ρ2 of the density meter 401, and by comparing the values ​​of ρ1 and ρ2 to determine whether the first pressure transmitter 202 and the second pressure transmitter 203 are faulty;

[0055] After the two conduits of the first pressure transmitter 202 and the second pressure transmitter 203 are installed, a densitometer 401 is installed therein. The density in the liquid storage device can be measured by the densitometer 401. At this time, the measured density is compared with the calculated density, and the judgment formula is as follows:

[0056] K<ρ1-ρ2|

[0057] Where K is a constant, and its value is 30Kg / m. When the difference between the density ρ2 detected by the density meter 401 and the calculated density ρ1 is greater than 30Kg / m, it can be concluded that there is a problem with the test data, and it can be determined that the detection equipment is distorted, and repair and replacement can be carried out at this time.

[0058] Further, S6. When the judgment formula is satisfied, the first pressure transmitter 202 and the second pressure transmitter 203 are backwashed;

[0059] When the difference between the density ρ2 detected by the density meter 401 and the calculated density ρ1 is greater than 30Kg / m, clean water can be introduced into the conduit in the reverse direction, and the clean water passes through the density meter 401, the first pressure transmitter 202 and the second pressure transmitter 203, so as to flush them and clean the impurities attached to the detection head. At the same time, the density of the clean water is 1000Kg / m 3 , which is a constant value, can also further determine the accuracy of the values ​​of ρ2 and ρ1, and then determine whether the density meter 401, the first pressure transmitter 202 and the second pressure transmitter 203 are damaged.

[0060] S6. By recovering the liquid flowing through the first pressure transmitter 202 and the second pressure transmitter 203, and setting a plurality of PH meters 302 for real-time monitoring of PH values;

[0061] A measuring cylinder 301 is provided at the end where the catheters meet to recover the liquid flowing through the catheters, and a pH meter 302 is installed in the catheters to monitor the pH value in real time. When the difference between multiple pH values ​​is greater than 0.2, flushing is performed to ensure the accuracy of the measurement data.

[0062] The remaining structures are the same as those of Example 1.

[0063] Example 3, reference Figure 1 , which is the third embodiment of the present invention, provides a desulfurization absorption tower measurement device, which includes: an absorption tower body 100, a pressure measuring unit 200, a pH measuring unit 300 and a density measuring unit 400.

[0064] Wherein, the pressure measuring unit 200 includes a three-way pipe 201 arranged in the absorption tower body 100, two pipes of the three-way pipe 201 are connected to the absorption tower body 100, and the first pressure transmitter 202 and the second pressure transmitter 203 are respectively installed on the pipe body of the three-way pipe 201 connected to the absorption tower body 100, wherein the height of the connection part of the three-way pipe 201 and the absorption tower body 100 is inconsistent, wherein they are h1 and h2, which correspond to the installation heights of the first pressure transmitter 202 and the second pressure transmitter 203 respectively; and the range of h1 is 1.0-1.5m, and the height difference between h1 and h2 is preferably 0.5-1m, and the pressures P1 and P2 at h1 and h2 are respectively detected by the first pressure transmitter 202 and the second pressure transmitter 203, and the density ρ1 and the liquid level H of the liquid in the absorption tower body 100 are calculated by the following two formulas;

[0065] The calculation formulas are: ρ1=(P2-P1) / g(h1-h2) and H=h1+(P1 / ρ1g).

[0066] Furthermore, the pH measuring unit 300 includes a measuring cylinder 301 connected to the other tube body of the three-way pipe 201, and a pH meter 302 arranged on the measuring cylinder 301, wherein two pH meters 302 are provided, and an overflow port is provided at the top of the measuring cylinder 301, and the overflow port and the bottom of the measuring cylinder 301 are both connected to the ditch, and the liquid passing through the three-way pipe 201 first passes through the first pressure transmitter 202 and the second pressure transmitter 203, and then merges in the three-way pipe 201 and enters the measuring cylinder 301, and merges in the measuring cylinder 301, and at the same time, the pH value of the liquid is measured by the pH meter 302; the liquid in the measuring cylinder 301 will be discharged into the ditch, so as to be pumped into the absorption tower body 100 for reuse;

[0067] The provision of two pH meters 302 can serve as an insurance policy. When the difference between the two pH values ​​is greater than 0.2, it can be determined that the pH meter 302 is faulty.

[0068] Further, the density measuring unit 400 includes a densitometer 401 disposed on the tube body of the three-way pipe 201 connected to the measuring cylinder 301, wherein the densitometer 401 can measure the density ρ2 of the liquid in the absorption tower body 100;

[0069] When the difference between the density ρ2 detected by the densitometer 401 and the calculated density ρ1 is greater than 30Kg / m, it can be concluded that there is a problem with the detection data, and it can be determined that the detection equipment is distorted. At this time, repair and replacement can be carried out.

[0070] Furthermore, a valve assembly 201a is provided between the first pressure transmitter 202 and the second pressure transmitter 203 and the absorption tower body 100, and between the density meter 401 and the measuring cylinder 301. The valve assembly 201a includes a mechanical valve and an electronic valve. The two valves can be installed at the same time. The connection between the three-way pipe 201 and the absorption tower body 100 can be controlled by the valve. When it is determined that the detection equipment detects distortion and damage, the valve assembly 201a can be closed for maintenance and replacement.

[0071] Furthermore, the density measuring unit 400 also includes a flushing pipe 402; the flushing pipe 402 and the density meter 401 are installed on the same pipe body of the three-way pipe 201, and the flushing pipe 402 is connected to an external clean water source. By pumping clean water into the flushing pipe 402, the clean water will pass through the density meter 401, the first pressure transmitter 202, the second pressure transmitter 203 and the pH meter 302 when passing through the three-way pipe 201, and flush and clean them.

[0072] Among them, when the difference between the two PH values ​​is greater than 0.2 or the difference between the density ρ2 detected by the density meter 401 and the calculated density ρ1 is greater than 30Kg / m, backwashing operation can be carried out at this time. By pumping clean water into the flushing pipe 402, the clean water will pass through the density meter 401, the first pressure transmitter 202, the second pressure transmitter 203 and the PH meter 302 when passing through the three-way pipe 201, and flush and clean them. When the clean water is cleaning, since the density and PH value of the clean water are fixed values, the accuracy of the density meter 401, the first pressure transmitter 202, the second pressure transmitter 203 and the PH meter 302 can also be verified at this time.

[0073] Furthermore, filters 201b are provided at the connection parts between the flushing pipe 402 and the three-way pipe 201 and the absorption tower body 100 to filter impurities passing through the first pressure transmitter 202 and the second pressure transmitter 203, thereby increasing the service life of the first pressure transmitter 202 and the second pressure transmitter 203.

[0074] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A detection method, characterized in that: include, By reading data P1 of a first pressure transmitter (202) installed at a height of h1; By reading data P2 of a second pressure transmitter (203) installed at a height of h2; Calculate using the following formula: ρ1=(P2-P1)g(h1-h2) ρ1 is the calculated density of the liquid being measured.

2. The detection method according to claim 1, characterized in that: Calculate using the following formula: H=h1+(P 1 ρ1g) H is the liquid level height of the measured liquid.

3. The detection method according to claim 1 or 2, characterized in that: By installing the densitometer (401) and reading the data ρ2 of the densitometer (401), By comparing the values ​​of ρ1 and ρ2, it is determined whether the first pressure transmitter (202) and the second pressure transmitter (203) are faulty; The judgment formula is as follows: K<ρ1-ρ2| Where K is a constant.

4. The detection method according to claim 3, characterized in that: When the judgment formula is satisfied, the first pressure transmitter (202) and the second pressure transmitter (203) are backwashed.

5. The detection method according to claim 4, characterized in that: The liquid flowing through the first pressure transmitter (202) and the second pressure transmitter (203) is recovered, and a plurality of pH meters (302) are provided to monitor the pH value in real time.

6. A desulfurization absorption tower measuring device, used to perform the method according to claim 5, characterized in that: include, Absorption tower body (100); A pressure measuring unit (200), comprising a three-way pipeline (201) arranged in the absorption tower body (100), wherein two pipelines of the three-way pipeline (201) are connected to the absorption tower body (100), and a first pressure transmitter (202) and a second pressure transmitter (203) are respectively installed on the pipe body of the three-way pipeline (201) connected to the absorption tower body (100); A pH measuring unit (300) comprising a measuring cylinder (301) connected to the other tube body of the three-way pipe (201), a pH meter (302) arranged on the measuring cylinder (301); and, A density measuring unit (400) comprises a densitometer (401) arranged on the tube body of the three-way pipe (201) connected to the measuring cylinder (301).

7. The detection method according to claim 6, characterized in that: A valve assembly (201a) is provided between the first pressure transmitter (202), the second pressure transmitter (203) and the absorption tower body (100), and between the density meter (401) and the measuring cylinder (301).

8. The desulfurization absorption tower measuring device according to claim 6, characterized in that: The pH meter (302) is provided with two; The top of the measuring tube (301) is provided with an overflow port, and the overflow port and the bottom of the measuring tube (301) are both connected to the trench.

9. The desulfurization absorption tower measuring device according to any one of claims 6 to 8, characterized in that: The density measurement unit (400) further includes a flushing pipeline (402); The flushing pipe (402) and the density meter (401) are installed on the same pipe body of the three-way pipe (201).

10. The desulfurization absorption tower measuring device according to claim 9, characterized in that: The connection parts between the flushing pipe (402) and the three-way pipe (201) and the absorption tower body (100) are both provided with filters (201b).

Images