Multipurpose chloride ion concentration detection device

Abstract

The utility model discloses a multipurpose chloride ion concentration detection device, which belongs to the technical field of detection systems, and comprises a detection container, a cooling system; the demineralized water pipeline system comprises a demineralized water main pipeline, an inlet of the demineralized water main pipeline is connected with demineralized water supply equipment, and an outlet of the demineralized water main pipeline is connected with the cooling system; an inlet of the first demineralized water branch pipeline is communicated with the demineralized water main pipeline; an inlet of the second demineralized water branch pipeline is communicated with one end, close to the to-be-detected solution supply equipment, of the solution input pipeline; the demineralized water pipeline system is arranged, the solution to be detected and the demineralized water are mixed and then detected, and the technical problem that the concentration of the solution to be detected exceeds the concentration detection range of a conventional chloride ion detection instrument, so that the concentration value cannot be detected by the chloride ion detection instrument is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection system technical field, more specifically, especially, a kind of multipurpose chloride ion concentration detection device. BACKGROUND

[0002] In the process system operation process such as urea hydrolysis ammonia production, desulfurization wastewater zero discharge, the chloride ion concentration in solution needs to be monitored, to adjust operating condition, reduce the corrosion of equipment.

[0003] When urea hydrolyzer operates, its internal temperature is maintained at 120-160 ℃, and internal pressure is maintained at about 0.6 MPa, at this time, it is difficult to sample urea solution, and direct sampling of urea solution will cause flash evaporation phenomenon, resulting in large error of detection result.

[0004] The chloride ion concentration in desulfurization wastewater is relatively high, usually greater than 20,000 mg / L, and the chloride ion concentration can reach more than 200,000 mg / L after concentration, and the temperature of the solution is > 50 ℃, which has exceeded the concentration detection range and working temperature range of conventional chloride ion detection instrument; in addition, the solution usually also contains suspended solids, which can also interfere with the accuracy of concentration detection result; therefore, a system capable of accurately detecting the chloride ion concentration of the solution in the above detection environment is urgently needed. SUMMARY

[0005] The utility model aims at solving the technical problem of poor reliability of chloride ion concentration detection result in existing urea hydrolysis ammonia production, desulfurization wastewater zero discharge and other processes, and proposes a multipurpose chloride ion concentration detection device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A multipurpose chloride ion concentration detection device, the multipurpose chloride ion concentration detection device is connected with a desalted water supply device and a to-be-measured solution supply device; the multipurpose chloride ion concentration detection device comprises:

[0008] A detection container is provided with a feed inlet and a discharge outlet on the detection container; the feed inlet and the to-be-measured solution supply device are connected through a solution input pipeline, and the discharge outlet is connected with a waste liquid output pipeline;

[0009] A cooling system is connected with the detection container;

[0010] A desalted water pipeline system is used to transport desalted water from the desalted water supply device to the detection container and the solution input pipeline;

[0011] The desalted water pipeline system comprises a desalted water main pipe, an inlet of which is connected with a desalted water supply device, and an outlet of which is connected with the cooling system;

[0012] A first desalted water branch pipe, an inlet of which is connected with the desalted water main pipe, and an outlet of which is connected with one end of the solution input pipe close to the feed inlet;

[0013] A second desalted water branch pipe, an inlet of which is connected with one end of the solution input pipe close to the solution supply device to be detected, and an outlet of which is connected with the waste liquid output pipe.

[0014] Further, the desalted water main pipe is provided with:

[0015] A second thermometer, which is located at one end of the desalted water main pipe close to the desalted water supply device;

[0016] A first valve, which is used to control the on-off state of the desalted water main pipe between the cooling system and the desalted water supply device;

[0017] A first check valve, which is used to prevent the desalted water in the cooling system from flowing back to the desalted water supply device.

[0018] Further, the first desalted water branch pipe is provided with:

[0019] A second valve, which is used to control the on-off state of the first desalted water branch pipe;

[0020] A second check valve, which is used to prevent the solution to be detected in the solution input pipe and the desalted water from flowing back to the desalted water supply device along the first desalted water branch pipe.

[0021] Further, the solution input pipe is provided with a third valve, which is located between the feed inlet of the detection container and the outlet of the first desalted water branch pipe.

[0022] Further, the second desalted water branch pipe is provided with a fourth valve, which is used to control the on-off state of the second desalted water branch pipe;

[0023] The waste liquid output pipe is provided with a fifth valve, which is located between the discharge outlet of the detection container and the outlet of the second desalted water branch pipe.

[0024] Further, the detection container is provided with a first thermometer, a liquid level meter and a chloride ion detector.

[0025] Further, the cooling system comprises:

[0026] a cooler, which is connected with the detection container and the outlet of the desalted water main pipeline respectively;

[0027] a desalted water circulating pipeline, the inlet of which is connected with the inside of the detection container, the outlet of which is connected with the desalted water main pipeline, and the outlet of the desalted water circulating pipeline is located between the cooler and the first non-return valve.

[0028] a third non-return valve, which is connected with the desalted water circulating pipeline;

[0029] a delivery pump, which is connected with the desalted water circulating pipeline and is used for pumping the desalted water in the detection container to the cooler for cooling.

[0030] Further, a filter is arranged on the solution input pipeline, and the filter is located between the outlet of the first desalted water branch pipeline and the inlet of the second desalted water branch pipeline.

[0031] The utility model discloses beneficial effects are:

[0032] The multipurpose chloride ion concentration detection device provided by the application is cleaned by the desalted water pipeline system, the influence of residual solution on the detection result is eliminated, and the detection is carried out after the to-be-tested solution is mixed with the desalted water, so that the technical problem that the concentration of the to-be-tested solution exceeds the concentration detection range of the conventional chloride ion detection instrument in the related art is solved, the concentration value cannot be detected by the chloride ion detection instrument, and the flashing phenomenon during direct sampling detection is avoided.

[0033] The temperature of the desalted water is reduced to a set value by the cooling system, and then the desalted water is mixed with the to-be-tested solution, so that the technical problem that the temperature of the to-be-tested solution exceeds the working temperature range of the conventional chloride ion detection instrument in the related art is solved. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is a whole schematic view of the multipurpose chloride ion concentration detection device provided in the utility model embodiment;

[0035] Figure 2 It is a desalted water flow direction schematic view when the solution input pipeline is cleaned in the utility model embodiment;

[0036] Figure 3 It is a desalted water flow direction schematic view when the detection container is cleaned in the utility model embodiment;

[0037] Figure 4The utility model discloses a cooling desalted water flow direction schematic view when cooling desalted water in the embodiment of the utility model;

[0038] Figure 5 The utility model discloses a to be measured solution flow direction schematic view in the embodiment of the utility model;

[0039] The figure mark is as follows:

[0040] 1, detection container;

[0041] 11, solution input pipeline; 111, third valve; 112, filter; 12, waste liquid output pipeline; 121, fifth valve; 13, first thermometer; 14, liquid level meter; 15, chloride ion detector;

[0042] 2, cooling system;

[0043] 21, cooler; 22, desalted water circulation pipeline; 23, delivery pump; 24, third check valve;

[0044] 3, desalted water pipeline system;

[0045] 31, desalted water main pipeline; 311, first valve; 312, first check valve; 313, second thermometer; 32, first desalted water branch pipeline; 321, second valve; 322, second check valve; 33, second desalted water branch pipeline; 331, fourth valve. DETAILED DESCRIPTION

[0046] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0047] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the utility model are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directionality indications also change accordingly.

[0048] In the utility model, unless another definite provision and limitation, the terms "connect", "fix" and the like should be broad sense understanding, for example, "fix" can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two element internal communication or two element mutual action relation, unless another definite limitation.For ordinary skilled in the art, can understand the specific meaning of the above terms in the utility model according to specific circumstances.

[0049] In addition, if the embodiment of the utility model involves "first", "second" and the like, the "first", "second" and the like are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of indicated technical features.Therefore, the features with "first", "second" can explicitly or implicitly include at least one feature.In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B simultaneously meet the scheme.In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the utility model.

[0050] Please refer to Figures 1 to 5 The embodiment of the application shown provides a multipurpose chloride ion concentration detection device, which is connected with a desalted water supply device and a to-be-measured solution supply device in actual application, is used for mixing the treated desalted water and the to-be-measured solution, and further measures the chloride ion concentration in the to-be-measured solution.It should be noted that the desalted water supply device can adopt any one of a reverse osmosis desalted water device, an EDI electric desalted water treatment device and an electrodialyzer, or other devices capable of supplying desalted water.The to-be-measured solution supply device can adopt a urea hydrolyzer or a desulfurization wastewater storage tank, or other devices capable of containing the to-be-measured solution.

[0051] The multipurpose chloride ion concentration detection device comprises a detection container 1, a cooling system 2 and a desalted water pipeline system 3; wherein the to-be-detected solution is mixed with the desalted water in the detection container 1 and is diluted to a proper concentration; the detection container 1 is provided with an inlet and an outlet, the inlet is connected with a to-be-detected solution supply device through a solution input pipeline 11, the to-be-detected solution supply device sends the to-be-detected solution into the detection container 1 through the solution input pipeline 11; the outlet is connected with a waste liquid output pipeline 12, the solution in the detection container 1 which has completed the detection is discharged from the outlet and is discharged to a pit through the waste liquid output pipeline 12 for treatment; the cooling system 2 is connected with the detection container 1 and is used for cooling the desalted water to a proper temperature and then inputting the desalted water into the detection container 1, the cooled desalted water is mixed with the to-be-detected solution, so that the temperature of the to-be-detected solution is reduced, thereby solving the technical problem that the to-be-detected solution exceeds the working temperature range of the chloride ion detection instrument.

[0052] In the above technical solution, the detection container 1 is further provided with a first thermometer 13, a liquid level meter 14 and a chloride ion detector 15; wherein the first thermometer 13 is used for detecting the temperature of the desalted water input into the detection container 1; the liquid level meter 14 is used for measuring the liquid level of the desalted water in the detection container 1 and the liquid level of the mixed solution after the desalted water is mixed with the to-be-detected solution; the chloride ion detector 15 is used for detecting the chloride ion concentration in the to-be-detected solution; it can be understood that the measurement values of the first thermometer 13, the liquid level meter 14 and the chloride ion detector 15 can be obtained by means of on-site reading or remote reading through a transmitter.

[0053] In the embodiment, the design of the desalted water pipeline system 3 aims at conveying the desalted water used for diluting the to-be-detected solution and conveying the desalted water used for cleaning the detection container 1 and the solution input pipeline 11; more specifically, the desalted water pipeline system 3 comprises a desalted water main pipeline 31, a first desalted water branch pipeline 32 and a second desalted water branch pipeline 33; wherein the inlet of the desalted water main pipeline 31 is connected with a desalted water supply device, the outlet thereof is connected with the cooling system 2, the desalted water output by the desalted water supply device is conveyed into the cooling system 2 through the desalted water main pipeline 31 for cooling; it can be understood that the desalted water main pipeline 31 is provided with a first valve 311, a first non-return valve 312 and a second thermometer 313; wherein the first valve 311 is used for controlling the opening and closing of the desalted water main pipeline 31 between the cooling system 2 and the desalted water supply device, the first non-return valve 312 is used for preventing the desalted water in the cooling system 2 from flowing back to the desalted water supply device; the second thermometer 313 is located on the desalted water main pipeline 31 close to one end of the desalted water supply device and is used for detecting the temperature of the desalted water output by the desalted water supply device.

[0054] The inlet of the first desalted water branch pipeline 32 is communicated with the desalted water main pipeline 31, and the outlet is communicated with one end of the solution input pipeline 11 close to the feeding port; the first desalted water branch pipeline 32 is designed so that the desalted water output from the desalted water supply device can enter the solution input pipeline 11 through the first desalted water branch pipeline 32 to clean the solution input pipeline 11, thereby avoiding the situation that when the to-be-tested solution is input, the residual solution in the solution input pipeline 11 is transported into the detection container 1 together with the to-be-tested solution, resulting in that the detection value is too large and the detection result is distorted, and further ensuring the accuracy of the chloride ion concentration detection.

[0055] It can be understood that the first desalted water branch pipeline 32 is provided with a second valve 321 and a second check valve 322; the solution input pipeline 11 is provided with a third valve 111, which is located between the feeding port of the detection container 1 and the outlet of the first desalted water branch pipeline 32; wherein the second valve 321 is used to control the on-off of the first desalted water branch pipeline 32; the second check valve 322 is used to prevent the to-be-tested solution in the solution input pipeline 11 and the desalted water from flowing back to the desalted water supply device along the first desalted water branch pipeline 32; the design purpose of the third valve 111 is to control the communication state between the feeding port of the detection container 1 and the solution supply device, and also to avoid that the desalted water for cleaning the solution input pipeline 11 directly enters the detection container 1 from the feeding port.

[0056] The inlet of the second desalted water branch pipeline 33 is communicated with one end of the solution input pipeline 11 close to the to-be-tested solution supply device, and the outlet is communicated with the waste liquid output pipeline 12; the desalted water for cleaning the solution input pipeline 11 enters the second desalted water branch pipeline 33 and flows into the waste liquid discharged from the detection container 1, and is discharged to the pit for further treatment; the first desalted water branch pipeline 32 and the second desalted water branch pipeline 33 cooperate to transport the desalted water from the desalted water main pipeline 31, thereby achieving the technical effect of cleaning the solution input pipeline 11.

[0057] It can be understood that the second desalted water branch pipeline 33 is provided with a fourth valve 331; the waste liquid output pipeline 12 is provided with a fifth valve 121, which is located between the discharge port of the detection container 1 and the outlet of the second desalted water branch pipeline 33; wherein the fourth valve 331 is used to control the on-off of the second desalted water branch pipeline 33, which can avoid that the to-be-tested solution in the solution input pipeline 11 directly enters the waste liquid output pipeline 12; the design purpose of the fifth valve 121 is to control the communication state between the discharge port of the detection container 1 and the pit, and also to avoid that the desalted water directly enters the detection container 1 from the discharge port.

[0058] As a preferred embodiment of the present application, a filter 112 is further arranged on the solution input pipeline 11, and the filter 112 is arranged between the outlet of the first desalted water branch pipeline 32 and the inlet of the second desalted water branch pipeline 33; the filter 112 is used to filter out the suspended matters in the solution to be measured, and further reduce the factors that may interfere with the detection result of the chloride ion concentration.

[0059] In the embodiment, the cooling system 2 comprises a cooler 21, a desalted water circulation pipeline 22, a delivery pump 23 and a third check valve 24; the cooler 21 is connected with the detection container 1 and the outlet of the desalted water main pipeline 31 respectively, and is used to cool the input desalted water and then input the cooled desalted water into the detection container 1; the inlet of the desalted water circulation pipeline 22 is connected with the inside of the detection container 1, and the outlet thereof is connected with the desalted water main pipeline 31 and is located between the cooler 21 and the first check valve 312; the delivery pump 23 and the third check valve 24 are connected with the desalted water circulation pipeline 22, wherein the delivery pump 23 is used to pump the desalted water in the detection container 1 back to the cooler 21 for cooling again; and the third check valve 24 is used to prevent the desalted water that has not been cooled from entering the inside of the detection container 1 along the desalted water circulation pipeline 22; by using the above technical solution, if the detection personnel reads from the first thermometer 13 that the temperature of the desalted water in the detection container 1 does not reach the target temperature, the delivery pump 23 can be started to pump the desalted water back to the cooler 21 for cooling again until the temperature of the desalted water meets the requirement.

[0060] Working principle: please refer to Figure 2 Before the solution to be measured is input into the detection container 1, all the valves are closed; after the desalted water supply device is started, the second valve 321 and the fourth valve 331 are opened, and the solution input pipeline 11 is washed by the desalted water; after the solution input pipeline 11 is washed, the second valve 321 and the fourth valve 331 are closed; at the same time, the first valve 311 is opened, please refer to Figure 3 The desalted water is injected into the detection container 1, and after the liquid level of the desalted water reaches the highest liquid level of the detection container 1, the fifth valve 121 is opened to drain the desalted water, and the operation is repeated until the detection container 1 is washed and the fifth valve 121 is closed.

[0061] The temperature of the desalted water output by the desalted water supply device is measured by the second thermometer 313; if the measured value of the second thermometer 313 is greater than 40℃, the cooler 21 is started, please refer to Figure 4 The desalted water is cooled by the cooler 21 and then enters the detection container 1; the liquid level of the desalted water in the detection container 1 is obtained by the liquid level meter 14, and the first valve 311 is closed when the liquid level reaches the set value h1; the temperature of the desalted water in the detection container 1 is read by the first thermometer 13, and if the temperature does not reach the set value, the delivery pump 23 is started to pump the desalted water to the cooler 21 for cooling again until the desalted water reaches the set temperature, and then the delivery pump 23 stops running; please refer to Figure 5, open the third valve 111, the measured solution enters the detection container 1 and mixes with the desalted water, the third valve 111 is closed after the mixed solution liquid level reaches the set value h2; the chloride ion concentration of the mixed solution is detected by the chloride ion detector 15, and finally the chloride ion concentration η of the measured solution is obtained according to calculation = h2c / (h2-h1)ρ;

[0062] In the formula: η is the chloride ion concentration in the measured solution; c is the chloride ion concentration of the mixed solution in the detection container 1; and ρ is the density of the measured solution.

[0063] After detection, the fifth valve 121 is opened to empty the mixed solution in the detection container 1, the second valve 321, the third valve 111 and the fourth valve 331 are opened to flush the pipeline to be clean, and then the second valve 321, the third valve 111, the fourth valve 331 and the fifth valve 121 are closed, the first valve 311 is opened, the desalted water is injected into the detection container 1, the desalted water liquid level reaches the highest liquid level of the detection container 1, the fifth valve 121 is opened to empty the desalted water, and the operation is repeated until the detection container 1 is washed clean, and then the first valve 311 and the fifth valve 121 are closed.

[0064] After all the pipelines and the detection container 1 are washed clean, the multipurpose chloride ion concentration detection device enters a standby state.

[0065] The multipurpose chloride ion concentration detection device provided in the application can clean the pipelines and the detection container 1 by using the desalted water pipeline system 3, eliminate the influence of residual solution on the detection result, mix the measured solution with the desalted water before detection, solve the technical problem that the concentration of the measured solution exceeds the concentration detection range of the conventional chloride ion detection instrument in the related art, so that the chloride ion detection instrument cannot measure the concentration value, and avoid the flashing phenomenon when directly sampling and detecting.

[0066] The temperature of the desalted water is reduced to a set value by the cooling system 2 before being mixed with the measured solution, so as to solve the technical problem that the temperature of the measured solution exceeds the working temperature range of the conventional chloride ion detection instrument in the related art.

[0067] The above is only a preferred specific implementation manner of the application, but the protection scope of the application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical scheme and the application concept of the application within the technical range disclosed by the application, which should be covered in the protection scope of the application.

Claims

1. A multipurpose chloride ion concentration detecting device which is connected to a desalinated water supply device and a solution to be measured supply device, characterized by, The multi-purpose chloride ion concentration detection device comprises: a detection container, which is provided with an inlet and an outlet; the inlet is connected to a solution supply device through a solution input pipeline, and the outlet is connected to a waste liquid output pipeline; a cooling system, which is connected to the detection container; a desalted water pipeline system, which is used to transport desalted water from a desalted water supply device to the detection container and the solution input pipeline; the desalted water pipeline system comprises a desalted water main pipeline, an inlet of which is connected to the desalted water supply device, and an outlet of which is connected to the cooling system; a first desalted water branch pipeline, an inlet of which is connected to the desalted water main pipeline, and an outlet of which is connected to one end of the solution input pipeline close to the inlet; a second desalted water branch pipeline, an inlet of which is connected to one end of the solution input pipeline close to the solution supply device, and an outlet of which is connected to the waste liquid output pipeline.

2. The multi-purpose chloride ion concentration detecting device according to claim 1, characterized by the desalted water main pipeline is provided with: a second thermometer, which is located at one end of the desalted water main pipeline close to the desalted water supply device; a first valve, which is used to control the on-off state of the desalted water main pipeline between the cooling system and the desalted water supply device; a first check valve, which is used to prevent the desalted water in the cooling system from flowing back to the desalted water supply device.

3. The multi-purpose chloride ion concentration detecting device according to claim 1, wherein the first desalted water branch pipeline is provided with: a second valve, which is used to control the on-off state of the first desalted water branch pipeline; a second check valve, which is used to prevent the solution in the solution input pipeline and the desalted water from flowing back to the desalted water supply device along the first desalted water branch pipeline.

4. The multi-purpose chloride ion concentration measuring device according to claim 3, wherein the solution input pipeline is provided with a third valve, which is located between the inlet of the detection container and the outlet of the first desalted water branch pipeline.

5. The multi-purpose chloride ion concentration detecting device according to claim 1, wherein the second desalted water branch pipeline is provided with a fourth valve, which is used to control the on-off state of the second desalted water branch pipeline; the waste liquid output pipeline is provided with a fifth valve, which is located between the outlet of the second desalted water branch pipeline and the outlet of the detection container.

6. The multi-purpose chloride ion concentration detecting device according to claim 2, wherein the detection container is provided with a first thermometer, a liquid level meter and a chloride ion detector.

7. The multi-purpose chloride ion concentration detecting device according to claim 6, wherein the cooling system comprises: a cooler, which is connected to the detection container and the outlet of the desalted water main pipeline respectively; a desalted water circulation pipeline, an inlet of which is connected to the inside of the detection container, and an outlet of which is connected to the desalted water main pipeline, and the outlet of the desalted water circulation pipeline is located between the cooler and the first check valve; a third check valve, which is connected to the desalted water circulation pipeline; a delivery pump, which is connected to the desalted water circulation pipeline, and is used to pump the desalted water in the detection container to the cooler for cooling.

8. The multi-purpose chloride ion concentration detecting device according to claim 1, wherein The filter is arranged on the solution input pipeline and located between the outlet of the first desalted water branch pipeline and the inlet of the second desalted water branch pipeline.

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