CN210834407U - Carbon removal conductance measuring device and system - Google Patents

Carbon removal conductance measuring device and system Download PDF

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Publication number
CN210834407U
CN210834407U CN201921773088.5U CN201921773088U CN210834407U CN 210834407 U CN210834407 U CN 210834407U CN 201921773088 U CN201921773088 U CN 201921773088U CN 210834407 U CN210834407 U CN 210834407U
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liquid
measuring device
decarbonization
conductivity
sealed cavity
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高巍
邢介华
李白金
曾明敏
顾雷
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Nanjing Runchi Engineering Technology Co ltd
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Nanjing Runchi Engineering Technology Co ltd
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Abstract

The utility model relates to a remove carbon conductance measuring device and system effectively solves the CO that appears in the current measurement of hydrogen conductivity2The interference problem is solved without heating, accurate temperature control, cooling and other devices, the hollow fiber membrane tube bundle (2) is introduced to treat the target liquid based on the construction of a vacuum environment, the structure is simple and reliable, and the CO dissolved in the target liquid can be efficiently removed2And the device does not need heating, does not have high-temperature parts, not only protects the safety of operation and maintenance personnel, but also can realize accurate measurement of target liquid and improve the working efficiency.

Description

Carbon removal conductance measuring device and system
Technical Field
The utility model relates to a remove carbon conductance measuring device and system belongs to liquid degasification processing technology field.
Background
In a thermal system of a power plant, hydrogen conductivity is an important parameter and is an index of water vapor quality of the power plant, but in many cases, hydrogen conductivity has defects, which causes data distortion. Under the conditions of a large amount of water supplement of the system, TOC in water vapor, the vacuum degree of a condenser, small opening degree of a deaerator exhaust valve and the like, the effluent of the cation resin exchange column contains CO2,CO2The influence on the conductance is large, but the influence on the corrosion of a unit is smaller than that of anions, and the misjudgment of the hydrogen conductance can be caused, so that the CO contained in the effluent of the cation resin exchange column needs to be removed2And a basis is provided for unit operation and equipment maintenance.
CO removal in the prior art2The method is to heat the sample water to 98 ℃, but the device which is actually operated has complex structure (heating, accurate control of the temperature of the sample water and cooling) and high cost; the temperature of the heated sample water is high, the measurement of the conductivity is not in the temperature range suitable for measurement, and the measurement error is large; and the sample water is heated to have high temperature, so that the sample water is easy to cause damage to maintainers during maintenance.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a remove carbon conductance measuring device is provided, based on vacuum environment's establishment, introduce hollow fiber membrane tube bank and handle target liquid, CO in not only can the high-efficient target liquid that realizes2The method is convenient for accurately measuring the target liquid before and after treatment, and improves the working efficiency.
The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme: the utility model discloses a remove carbon conductance measuring device for get rid of CO in the target liquid2Comprises a sealed cavity, a vacuum pump and a hollow fiber membrane tube bundle; wherein, the surface of the sealed cavity is respectively provided with a liquid feeding inlet and a liquid discharge outlet of the inner space and the outer space thereof; the hollow fiber membrane tube bundle comprises at least one hollow fiber membrane tube, each hollow fiber membrane tube is arranged in the sealed cavity, a circumference of the tube wall of each hollow fiber membrane tube is provided with a breathable water-stop membrane, and each hollow fiber membrane tube is spirally arranged inIn the sealed cavity, one end of each hollow fiber membrane tube covers the inner side of the liquid feeding inlet on the surface of the butt-joint sealed cavity together, the other end of each hollow fiber membrane tube covers the inner side of the liquid discharging outlet on the surface of the butt-joint sealed cavity together, and the liquid feeding inlet and the liquid discharging outlet are communicated with each other inside the sealed cavity through the hollow fiber membrane tube bundle;
the surface of the sealed cavity is provided with an exhaust hole penetrating through the inner space and the outer space of the sealed cavity, the vacuum pump is arranged outside the sealed cavity, and an exhaust hole of the vacuum pump is butted with the exhaust hole and used for carrying out vacuum pumping treatment on the inside of the sealed cavity;
based on the vacuum pump for vacuumizing the inside of the sealed cavity, the target liquid is input from the liquid feeding inlet and output from the liquid discharge outlet through the hollow fiber membrane tube bundle, so that CO in the target liquid is realized2And (4) removing.
As an optimal technical solution of the utility model: the position of the liquid discharge outlet is higher than that of the liquid feeding inlet.
Corresponding to the above, the utility model discloses still the technical problem who solves provides a system based on remove carbon conductance measuring device, based on vacuum environment's establishment, introduces hollow fiber membrane tube bank and handles target liquid, not only can realize CO in the target liquid with high efficiency2The method is convenient for accurately measuring the target liquid before and after treatment, and improves the working efficiency.
The utility model discloses a solve above-mentioned technical problem and adopt following technical scheme: the utility model discloses a system based on decarbonization conductance measuring device, including at least one decarbonization conductance measuring device, each decarbonization conductance measuring device is connected in series in proper order according to the directional flowing back export direction of liquid feeding inlet, constitutes decarbonization conductance measuring device group, wherein, the liquid feeding inlet of the first decarbonization conductance measuring device is the liquid feeding mouth of the decarbonization conductance measuring device group, the flowing back export of the last decarbonization conductance measuring device is the liquid discharging mouth of the decarbonization conductance measuring device group;
based on the vacuum pumping treatment of the vacuum pump in the carbon-removing conductance measuring device set and the vacuum pump in each carbon-removing conductance measuring device on the inner part of the sealed cavity connected with the vacuum pump, the target liquid sequentially passes through the carbon-removing conductance measuring device setEach of the decarbonization conductance measuring devices of (1) realizes CO in the target liquid2And (4) removing.
As an optimal technical solution of the utility model: the device also comprises a positive conductivity sensor and a degassing conductivity sensor, wherein the positive conductivity sensor is arranged in the target liquid before the liquid feeding port of the decarbonization conductivity measuring device set and is used for measuring the positive conductivity of the target liquid in the liquid before the target liquid enters the liquid feeding port of the decarbonization conductivity measuring device set, so that the characterization of the content of anions in the target liquid before the decarbonization operation is realized; the degassing conductivity sensor is arranged in the target liquid behind the liquid discharge port of the decarbonization conductivity measuring device group and is used for measuring the conductivity of the target liquid in the liquid after the target liquid is discharged from the liquid discharge port of the decarbonization conductivity measuring device group, so that the representation of the anion content of the target liquid after the decarbonization is realized; by comparing the measurement result of the positive conductivity sensor with the measurement result of the degassing conductivity sensor, CO in the target liquid is realized2And (5) characterizing the content.
As an optimal technical solution of the utility model: the device also comprises a cation resin exchange column which is arranged in front of the positive conductivity sensor, and the target liquid is firstly processed by the cation resin exchange column, then is detected by the positive conductivity sensor and is conveyed to the liquid conveying port of the carbon-removing conductivity measuring device group.
A remove carbon conductance measuring device and system, technical scheme compares with prior art more than adopting, has following technological effect:
the utility model discloses a remove carbon conductance measuring device and system effectively solves the CO that appears in the current measurement to hydrogen conductivity2The interference problem is solved without heating, accurate temperature control, cooling and other devices, the hollow fiber membrane tube bundle is introduced to treat the target liquid based on the construction of a vacuum environment, the structure is simple and reliable, and the CO dissolved in the target liquid can be efficiently removed2And the device does not need heating, does not have high-temperature parts, not only protects the safety of operation and maintenance personnel, but also can realize accurate measurement of target liquid and improve the working efficiency.
Drawings
FIG. 1 is a schematic view of a carbon removal conductance measuring apparatus according to the present invention;
fig. 2 is a schematic block diagram of a carbon removal conductance measuring device system according to the present invention.
The device comprises a sealed cavity 1, a hollow fiber membrane tube bundle 2, a vacuum pump 3, a liquid feeding inlet 4 and a liquid discharging outlet 5.
Detailed Description
The following description will be provided to further explain embodiments of the present invention in detail with reference to the accompanying drawings.
The utility model discloses a remove carbon conductance measuring device for get rid of CO in the target liquid2As shown in fig. 1, the fiber membrane tube bundle comprises a sealed cavity 1, a vacuum pump 3 and a hollow fiber membrane tube bundle 2, wherein a liquid feeding inlet 4 and a liquid discharging outlet 5 are respectively arranged on the surface of the sealed cavity 1.
The hollow fiber membrane tube bundle 2 comprises at least one hollow fiber membrane tube, each hollow fiber membrane tube is arranged in the sealed cavity 1, a circumference of the tube wall of each hollow fiber membrane tube is provided with a breathable water-stop membrane, each hollow fiber membrane tube is spirally arranged in the sealed cavity 1, one end of each hollow fiber membrane tube covers the inner side of a liquid feeding inlet 4 on the surface of the sealed cavity 1, the other end of each hollow fiber membrane tube covers the inner side of a liquid drainage outlet 5 on the surface of the sealed cavity 1, and the liquid feeding inlet 4 and the liquid drainage outlet 5 are communicated with each other in the sealed cavity 1 through the hollow fiber membrane tube bundle 2; the surface of the sealed cavity 1 is provided with an exhaust hole penetrating through the inner space and the outer space of the sealed cavity, the vacuum pump 3 is arranged outside the sealed cavity 1, and an exhaust hole of the vacuum pump 3 is butted with the exhaust hole and is used for carrying out vacuum pumping treatment on the inside of the sealed cavity 1; based on the vacuum pump 3 for vacuumizing the inside of the sealed cavity 1, the target liquid is input from the liquid feeding inlet 4 and output from the liquid discharge outlet 5 through the hollow fiber membrane tube bundle 2, so that CO in the target liquid is realized2And (4) removing.
In the practical application of the carbon-removing conductance measuring device, the position of the liquid discharge outlet 5 is further designed to be higher than the liquid feeding inlet 4, so that the liquid discharge outlet is arranged on the basis of the self gravity of the target liquid,can effectively reduce the flow speed of the target liquid between the liquid feeding inlet 4 and the liquid discharge outlet 5, prolong the treatment time of the target liquid and further improve the removal of CO in the target liquid2The efficiency of (c).
Based on above-mentioned design carbon conductance measuring device that removes, the utility model discloses a system based on carbon conductance measuring device has further been designed, among the practical application, including at least one carbon conductance measuring device that removes, each carbon conductance measuring device that removes establishes ties in proper order according to the 5 directions of the directional flowing back export of liquid feeding mouth 4, constitutes carbon conductance measuring device group that removes, and wherein, liquid feeding mouth 4 of first carbon conductance measuring device that removes is carbon conductance measuring device group's liquid feeding mouth, and flowing back export 5 of last carbon conductance measuring device is the flowing back mouth that removes carbon conductance measuring device group; based on the vacuumizing treatment of the vacuum pump 3 in the decarbonization conductivity measuring device set and in each decarbonization conductivity measuring device on the inside of the sealed cavity 1 connected with the vacuum pump, the target liquid sequentially passes through each decarbonization conductivity measuring device in the decarbonization conductivity measuring device set, and the CO in the target liquid is realized2And (4) removing.
Based on the decarbonization conductivity measuring device set, in practical application, as shown in fig. 2, the decarbonization conductivity measuring device set further comprises a cation resin exchange column, a positive conductivity sensor and a degassing conductivity sensor, wherein the positive conductivity sensor is arranged in a target liquid before a liquid feeding port of the decarbonization conductivity measuring device set, and is used for measuring positive conductivity of the target liquid before entering the liquid feeding port of the decarbonization conductivity measuring device set and in the liquid, so as to realize characterization of anion content before decarbonization operation in the target liquid; the degassing conductivity sensor is arranged in the target liquid behind the liquid discharge port of the decarbonization conductivity measuring device group and is used for measuring the conductivity of the target liquid in the liquid after the target liquid is discharged from the liquid discharge port of the decarbonization conductivity measuring device group, so that the representation of the anion content of the target liquid after the decarbonization is realized; by comparing the measurement result of the positive conductivity sensor with the measurement result of the degassing conductivity sensor, CO in the target liquid is realized2Characterizing the content; the cation resin exchange column is arranged in front of the positive conductivity sensor, and the target liquid is firstly treated by the cation resin exchange column and then is subjected to positive conductionAnd after the rate sensor detects the carbon removal conductivity measurement device, the carbon removal conductivity measurement device is conveyed to a liquid conveying port of the carbon removal conductivity measurement device group.
The designed carbon removal conductivity measuring device and system are applied to concrete practice, a system device structure is built according to the design scheme, and a vacuum pump 3 in each carbon removal conductivity measuring device in the carbon removal conductivity measuring device group performs vacuum pumping treatment on the inside of a sealing cavity 1 connected with the vacuum pump, so that the sealing cavity 1 is in a vacuum state; in practice, the target liquid is first sent to the cation resin exchange column, treated by the cation resin exchange column, and then passed through the anode conductivity sensor, and the anode conductivity in the target liquid at that time is measured by the anode conductivity sensor, and the anion content in the target liquid at that time is characterized, including the total amount of carbonate and bicarbonate produced by the ionization of impurity anions and dissolved CO2 in the sample water.
Then the target liquid is conveyed to the liquid feeding port of the decarbonization conductance measuring device group, namely is fed into the decarbonization conductance measuring device group and passes through each decarbonization conductance measuring device, wherein when the target liquid passes through a single decarbonization conductance measuring device, the target liquid is fed from the liquid feeding inlet 4 of the sealed cavity 1 in the decarbonization conductance measuring device and enters the hollow fiber membrane tube bundle 2 in the sealed cavity 1, because the circumference of the side wall of each hollow fiber membrane tube is an air-permeable water-proof membrane, each hollow fiber membrane tube is spirally arranged in the sealed cavity 1, the target liquid entering the hollow fiber membrane tube bundle 2 flows only in each hollow fiber membrane tube towards the direction of the liquid drainage outlet 5, meanwhile, the liquid wall of each hollow fiber membrane tube is the air-permeable water-proof membrane, and is in a vacuum state in the sealed cavity 1, the interior of the sealed cavity 1, The pressure of the environment around each hollow fiber membrane tube is lower than the pressure in each hollow fiber membrane tube, based on which CO dissolved in the target liquid2Will enter the sealed cavity 1 and the surrounding environment of the hollow fiber membrane tube bundle 2 through the tube wall of each hollow fiber membrane tube, namely the CO in the target liquid is realized2The separation of (2) is further performed by the process of the vacuum pump 3. Single decarbonization conductance in this patent design based on the existing size of the hollow fiber membrane bundle 2Application in measuring device, and test shows that a single carbon removal conductance measuring device can remove more than 90% of CO in liquid2In practical application, based on design requirements, at least one carbon removal conductivity measuring device is connected in series in sequence in the direction from the liquid feeding inlet 4 to the liquid discharge outlet 5 to form a carbon removal conductivity measuring device group, so that more efficient CO is realized2And (5) removing operation.
Outputting the target liquid after being processed by the carbon removal conductivity measuring device group, and measuring the anion content of the target liquid in water after the target liquid is discharged from a liquid discharge port of the carbon removal conductivity measuring device group by a degassing conductivity sensor; and the measurement result of the positive conductivity sensor is compared with the measurement result of the degassing conductivity sensor to realize the CO in the target liquid2And (5) characterizing the content.
The device and the system for measuring the carbon-removing conductance designed by the technical scheme effectively solve the problem of CO appearing in the conventional hydrogen conductivity measurement2The interference problem is solved without heating, accurate temperature control, cooling and other devices, the hollow fiber membrane tube bundle 2 is introduced to treat the target liquid based on the construction of a vacuum environment, the structure is simple and reliable, and the CO dissolved in the target liquid can be efficiently removed2And the device does not need heating, does not have high-temperature parts, not only protects the safety of operation and maintenance personnel, but also can realize accurate measurement of target liquid and improve the working efficiency.
The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims (5)

1. A carbon-removing conductance measuring device for removing CO in target liquid2The method is characterized in that: comprises a sealed cavity (1), a vacuum pump (3) and a hollow fiber membrane tube bundle (2); wherein, the surface of the sealed cavity (1) is respectively provided with a liquid feeding inlet (4) and a liquid discharge outlet (5) of the inner space and the outer space thereof; the hollow fiber membrane tube bundle (2) comprises at least one hollow fiber membrane tube, and each hollow fiber membrane tube is arrangedIn the sealed cavity (1), a circle of the wall of each hollow fiber membrane tube is provided with a breathable water-stop film, each hollow fiber membrane tube is spirally arranged in the sealed cavity (1), one end of each hollow fiber membrane tube covers the inner side of a liquid feeding inlet (4) on the surface of the butted sealed cavity (1) together, the other end of each hollow fiber membrane tube covers the inner side of a liquid discharging outlet (5) on the surface of the butted sealed cavity (1) together, and the liquid feeding inlet (4) and the liquid discharging outlet (5) are communicated in the sealed cavity (1) through a hollow fiber membrane tube bundle (2);
the surface of the sealed cavity (1) is provided with an exhaust hole penetrating through the inner space and the outer space of the sealed cavity, the vacuum pump (3) is arranged outside the sealed cavity (1), and an exhaust hole of the vacuum pump (3) is butted with the exhaust hole and is used for carrying out vacuum pumping treatment on the inside of the sealed cavity (1);
based on the vacuum pump (3) for vacuumizing the interior of the sealed cavity (1), target liquid is input from the liquid feeding inlet (4) and output from the liquid discharging outlet (5) through the hollow fiber membrane tube bundle (2), and CO in the target liquid is realized2And (4) removing.
2. The carbon-depleted conductance measuring device of claim 1, wherein: the position of the liquid discharge outlet (5) is higher than that of the liquid feeding inlet (4).
3. A system based on the carbon-removal conductance measuring apparatus of claim 1 or 2, wherein: the device comprises at least one decarbonization conductance measuring device, wherein the decarbonization conductance measuring devices are sequentially connected in series in the direction that a liquid feeding inlet (4) points to a liquid drainage outlet (5) to form a decarbonization conductance measuring device group, wherein the liquid feeding inlet (4) of the first decarbonization conductance measuring device is a liquid feeding port of the decarbonization conductance measuring device group, and the liquid drainage outlet (5) of the last decarbonization conductance measuring device is a liquid drainage port of the decarbonization conductance measuring device group;
based on the vacuum pumping treatment of the vacuum pump (3) in the decarbonization conductivity measuring device set and in each decarbonization conductivity measuring device on the inside of the sealed cavity (1) connected with the vacuum pump, the target liquid sequentially passes through each decarbonization conductivity measuring device in the decarbonization conductivity measuring device set, and the CO in the target liquid is realized2And (4) removing.
4. The carbon-removal conductance measurement device-based system according to claim 3, wherein: the device also comprises a positive conductivity sensor and a degassing conductivity sensor, wherein the positive conductivity sensor is arranged in the target liquid before the liquid feeding port of the decarbonization conductivity measuring device set and is used for measuring the positive conductivity of the target liquid in the liquid before the target liquid enters the liquid feeding port of the decarbonization conductivity measuring device set, so that the characterization of the content of anions in the target liquid before the decarbonization operation is realized; the degassing conductivity sensor is arranged in the target liquid behind the liquid discharge port of the decarbonization conductivity measuring device group and is used for measuring the conductivity of the target liquid in the liquid after the target liquid is discharged from the liquid discharge port of the decarbonization conductivity measuring device group, so that the representation of the anion content of the target liquid after the decarbonization is realized; by comparing the measurement result of the positive conductivity sensor with the measurement result of the degassing conductivity sensor, CO in the target liquid is realized2And (5) characterizing the content.
5. The carbon-removal conductance measurement device-based system according to claim 4, wherein: the device also comprises a cation resin exchange column which is arranged in front of the positive conductivity sensor, and the target liquid is firstly processed by the cation resin exchange column, then is detected by the positive conductivity sensor and is conveyed to the liquid conveying port of the carbon-removing conductivity measuring device group.
CN201921773088.5U 2019-10-22 2019-10-22 Carbon removal conductance measuring device and system Active CN210834407U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110553895A (en) * 2019-10-22 2019-12-10 南京润驰工程技术有限公司 Carbon removal conductance measuring device and system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110553895A (en) * 2019-10-22 2019-12-10 南京润驰工程技术有限公司 Carbon removal conductance measuring device and system

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