CN213518011U - Automatic control device for adding ammonia into condensed water - Google Patents
Automatic control device for adding ammonia into condensed water Download PDFInfo
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- CN213518011U CN213518011U CN202022942890.1U CN202022942890U CN213518011U CN 213518011 U CN213518011 U CN 213518011U CN 202022942890 U CN202022942890 U CN 202022942890U CN 213518011 U CN213518011 U CN 213518011U
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Abstract
The embodiment of the utility model provides an automatic control device for adding ammonia into condensed water, which comprises a plurality of ammonia solution boxes, wherein a first conveying pipeline is communicated with a liquid outlet of each ammonia solution box; a plurality of second conveying pipelines are led out from the first conveying pipeline, and are connected to the outlet end of the condensate pump together after being converged; each second conveying pipeline is provided with a condensed water ammoniating metering pump; a pressure buffer tank is arranged on a second conveying pipeline between the third control valve and the condensed water ammonia adding metering pump; a pressure gauge is arranged on the pressure buffer tank; each condensed water ammoniation metering pump is electrically connected with the switch control cabinet respectively; the switch control cabinet is electrically connected with the frequency conversion cabinet; the sampling tube is arranged at the outlet end of the condensate pump and is used for extracting the condensate after ammonia addition; the specific conductance meter is arranged on the sampling tube and is used for measuring the specific conductance value of the condensed water after the ammonia is added; the signal output end of the specific conductance meter is electrically connected with the control device, and the frequency conversion cabinet is electrically connected with the control device.
Description
Technical Field
The utility model relates to an automatic control device technical field particularly, relates to an automatic control device to gas-steam combined cycle unit condensate water adds ammonia.
Background
The most configured on-line meter of the gas turbine is the positive conductance meter which is a miniature H + cation exchanger arranged in front of a measuring motor, can effectively treat cations in a water sample, and then expresses the conductance by detecting the content of anions in the water. The positive conductance meter is the most direct and effective tool for judging leakage of the condenser or leakage of the heat exchanger of the heat supply network. Along with the common application of domestic waste heat boilers, the low-temperature flow accelerated corrosion problem of medium and low pressure water supply pipelines causes the risk of furnace tube thinning blasting, under the condition that the original pipe and water conservancy working conditions are unchanged, the only adjustment is to improve the pH value of the water supply, the pH value of condensed water is improved to about 9.6 from about 9.2, although the pH value is only improved by 0.4, the corresponding ammonium ion content is increased to more than 3000ppm from 300ppm, 10 times of added ammonium ions cause heavy burden when entering a cation exchanger arranged in front of a cation guide meter, and the operation time of the cation exchanger is about 20 days under normal conditions. The pH value of the condensed water is easy to fluctuate greatly due to various reasons such as load adjustment of a unit, conversion of an operation mode and the like, a front cation exchanger which can normally operate for more than one week is rare, and even the condition that the cation resin which is just replaced in the morning fails in the afternoon and loses the supervision function occurs. Therefore, the anode conductivity meter preposed exchange column is frequently regenerated by the operator on duty, the workload of the operator on duty is greatly improved, a large amount of desalted water and hydrochloric acid are consumed for regeneration in the process, and the long-time online instrument cannot be normally used for water quality supervision during the gradual failure period of the resin and the resin replacement period, so that the misjudgment on the water quality condition is easily caused during the resin failure period, and the workload of the operator on duty is increased. Aiming at the problems, the pH value of the condensed water needs to be automatically tracked and adjusted by automatically adjusting the adding amount of the ammonia water.
SUMMERY OF THE UTILITY MODEL
The present specification provides an automatic control device for adding ammonia to condensed water, which overcomes at least one technical problem in the prior art.
According to an embodiment of the present specification, there is provided an automatic control device for adding ammonia to condensed water, including:
a plurality of ammonia solution tanks;
the first conveying pipeline is communicated with the liquid outlet of each ammonia solution tank;
the first control valve is arranged between each ammonia solution tank and the first conveying pipeline;
the second conveying pipelines are led out of the first conveying pipeline, and are converged and then are connected to the outlet end of the condensate pump;
the condensed water ammonia adding metering pumps are arranged on the second conveying pipelines respectively;
the second control valve is arranged on the second conveying pipeline between the condensed water ammonia adding metering pump and the first conveying pipeline;
the metering pump inlet filter screen is arranged on the second conveying pipeline between the second control valve and the first conveying pipeline;
the check valve is arranged on the second conveying pipeline between the outlet end of the condensate pump and the condensate ammoniation metering pump;
the third control valve is arranged on the second conveying pipeline between the condensed water ammoniation metering pump and the check valve;
the pressure buffer tank is arranged on the second conveying pipeline between the third control valve and the condensed water ammonia adding metering pump;
the pressure gauge is arranged on the pressure buffer tank;
each condensed water ammoniation metering pump is electrically connected with the switch control cabinet respectively;
the switch control cabinet is electrically connected with the frequency conversion cabinet;
the sampling tube is arranged at the outlet end of the condensate pump and is used for extracting the condensate after ammonia addition;
the specific conductance meter is arranged on the sampling tube and is used for measuring the specific conductance value of the condensed water after ammonia addition;
and the signal output end of the specific conductance meter is electrically connected with the control device, and the frequency conversion cabinet is electrically connected with the control device.
Optionally, the automatic control device further comprises a stirrer, and each of the ammonia solution tanks is provided with one stirrer.
Optionally, the first control valve, the second control valve and the third control valve are all stop valves.
Optionally, the number of the ammonia solution tanks is two.
Optionally, the number of the second conveying pipelines is two.
Optionally, the first conveying pipeline and the second conveying pipeline are both made of 316L stainless steel.
The beneficial effects of the embodiment of the specification are as follows:
the specific conductance is adopted to replace the PH value as the index of the tracking water quality, the maintenance amount is minimum, the measuring method is more direct, and the specific conductance and the PH value can be converted mutually through a formula under the condition of alkaline pure water, so that the adding amount of ammonia water is automatically adjusted, and the automatic tracking adjustment of the PH value of the condensed water is realized.
After the automatic control device for adding ammonia into condensed water is put into operation, the specific conductance of the condensed water is basically controlled in an optimized interval of 11-14 us/cm, the corresponding pH value of the condensed water is 9.6-9.8, and the pH value interval required for overcoming low-temperature flow accelerated corrosion is completely met. In the process of starting and stopping a single unit by peak regulation and switching back pressure to a pumping and condensing running state, although the pH value fluctuates, the pH value is maintained in the range of 9.4-9.9, and the pH value is basically recovered to be normal within four hours through self regulation.
The positive conductance meter runs stably, the problem that regenerated cation exchanger resin is frequently replaced is solved, each positive conductance meter can normally run for about two weeks, particularly, the positive conductance meter cannot impact the cation exchanger resin in the frequent peak regulation process of a unit, and positive conductance is controllable. The resin regeneration process is reduced for about five times every year, the consumption of concentrated hydrochloric acid is greatly reduced, the dosage in the furnace is reduced, the consumption of ammonia water is also low, a general laboratory technician only needs to copy the data of the online meter, the frequency of manual sampling analysis is reduced, and the maintenance workload of chemical instrument maintainers is reduced.
The innovation points of the embodiment of the specification comprise:
1. in the embodiment, specific conductance is adopted to replace the PH value as a water quality tracking index, the maintenance amount is minimum, the measurement method is more direct, and under the condition of alkaline pure water, the specific conductance and the PH value can be mutually converted through a formula, so that the addition amount of ammonia water is automatically adjusted, and the automatic tracking adjustment of the PH value of the condensed water is realized.
2. In the embodiment, after the automatic control device for adding ammonia into condensed water is put into operation, the specific conductance of the condensed water is basically controlled in an optimized interval of 11-14 us/cm, the corresponding pH value of the condensed water is 9.6-9.8, and the pH value interval required for overcoming low-temperature flow accelerated corrosion is completely met. In the process of starting and stopping a single unit by peak regulation and switching back pressure to a pumping and condensing running state, although the pH value fluctuates, the pH value is maintained within the range of 9.4-9.9, and the pH value is basically recovered to be normal within four hours through self regulation, so that the method is one of the innovation points of the embodiment of the specification.
3. In the embodiment, the operation of the positive conductance meter is stable, the problem that the regenerated cation exchanger resin is frequently replaced is solved, each positive conductance meter can normally operate for about two weeks, particularly, the positive conductance meter cannot impact the cation exchanger resin in the frequent peak regulation process of a unit, and the positive conductance is controllable, so that the method is one of the innovation points of the embodiment of the specification.
4. In this embodiment, the resin regeneration process is reduced about five times per year, and the consumption of concentrated hydrochloric acid is greatly reduced, which is one of the innovative points in the embodiments of this specification.
5. In the embodiment, the operation is stable, the chemical adding amount in the furnace is reduced, and the consumption of ammonia water is less, which is one of the innovation points of the embodiment of the specification.
6. In the embodiment, the workload of an inspector is reduced, and when the automatic control device is put into operation, the ordinary inspector only needs to copy the data of the online meter, so that the frequency of manual sampling analysis is reduced, and the maintenance workload of a chemical instrument maintainer is reduced, which is one of the innovation points of the embodiment of the specification.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of an automatic control device for adding ammonia into condensed water according to an embodiment of the present disclosure;
in the figure, 1 is an ammonia solution tank, 2 is a stirrer, 3 is a condensed water and ammonia adding metering pump, 4 is a switch control cabinet, 5 is a frequency conversion cabinet, 6 is a first control valve, 7 is a metering pump inlet filter screen, 8 is a second control valve, 9 is a pressure buffer tank, 10 is a pressure gauge, 11 is a third control valve, 12 is a check valve, 13 is a first conveying pipeline, 14 is a second conveying pipeline, 15 is a condensed water pump, 16 is a specific conductance meter, 17 is a control device, and 18 is a sampling pipe.
Detailed Description
The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
It should be noted that the terms "including" and "having" and any variations thereof in the embodiments of the present specification and the drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
The embodiment of the specification discloses an automatic control device for adding ammonia into condensed water. The following are detailed below.
Fig. 1 is a diagram illustrating an automatic control device for adding ammonia to condensed water according to an embodiment of the present disclosure. As shown in fig. 1, the automatic control apparatus includes: the system comprises a plurality of ammonia solution tanks 1, a first conveying pipeline 13, a first control valve 6, a second conveying pipeline 14, a condensed water ammonia adding metering pump 3, a second control valve 8, a metering pump inlet filter screen 7, a check valve 12, a third control valve 11, a pressure buffer tank 9, a pressure gauge 10, a switch control cabinet 4, a frequency conversion cabinet 5, a sampling pipe 18, a specific conductance meter 16 and a control device 17; wherein the first conveying pipeline 13 is communicated with the liquid outlet of each ammonia solution tank 1; one first control valve 6 is arranged between each ammonia solution tank 1 and the first conveying pipeline 13; a plurality of paths of second conveying pipelines 14 are led out from the first conveying pipeline 13, and the plurality of paths of second conveying pipelines 14 are converged and then are connected to the outlet end of a condensate pump 15; each second conveying pipeline 14 is provided with one condensed water ammonia adding metering pump 3; the second control valve 8 is arranged on the second conveying pipeline 14 between the condensed water ammonia adding metering pump 3 and the first conveying pipeline 13; the metering pump inlet filter screen 7 is arranged on the second conveying pipeline 14 between the second control valve 8 and the first conveying pipeline 13; the check valve 12 is arranged on the second conveying pipeline 14 between the outlet end of the condensed water pump 15 and the condensed water ammonia adding metering pump 3; the third control valve 11 is arranged on the second conveying pipeline 14 between the condensed water ammonia adding metering pump 3 and the check valve 12; the pressure buffer tank 9 is arranged on the second conveying pipeline 14 between the third control valve 11 and the condensed water ammonia adding metering pump 3; the pressure buffer tank 9 is provided with the pressure gauge 10; each condensed water ammoniation metering pump 3 is electrically connected with the switch control cabinet 4 respectively; the switch control cabinet 4 is electrically connected with the frequency conversion cabinet 5; the sampling pipe 18 is arranged behind an ammonia adding point at the outlet end of the condensate pump 15 and is used for extracting the condensate after ammonia adding; the specific conductance meter 16 is arranged on the sampling pipe 18 and is used for measuring the specific conductance value of the condensed water after ammonia addition; the signal output end of the specific conductance meter 16 is electrically connected with the control device 17, and the frequency conversion cabinet 5 is electrically connected with the control device 17.
The embodiment of the utility model provides an adopt than the conductance as tracking quality of water index, the automatic adjustment aqueous ammonia addition to realize the automatic tracking regulation of condensate pH value. Specifically, the ammonia water in the ammonia solution tanks 1 is shunted by the first conveying pipelines 13, and is conveyed to the outlet end of the condensate pump 15 through the second conveying pipelines 14, the ammonia water is added into the condensate water, a sampling pipe 18 is connected to the pipeline after the ammonia is added, the condensate water after the ammonia is added is sampled by the sampling pipe 18, the sampling water is subjected to water quality detection by using a specific conductance meter 16, the specific conductance value of the condensate water after the ammonia is added is obtained, the measured specific conductance value is transmitted to the control device 17, the control device 17 determines the frequency control value of the condensate water ammonia adding metering pump 3 on the second conveying pipelines 14 according to the received specific conductance value, the frequency control value is communicated to the frequency conversion cabinet 5, the switch control cabinet 4 electrically connected with the frequency conversion cabinet 5 is used for controlling the condensate water ammonia adding metering pump 3, and the ammonia adding amount is automatically adjusted. In this process, the automatic control device in this embodiment controls the circulation of the ammonia water before and after the condensed water ammonia addition metering pump 3 by using the second control valve 8 and the third control valve 11, prevents the backflow of the ammonia water in the second conveying pipeline 14 by using the check valve 12, ensures the safety of the system, and filters the ammonia water entering the condensed water ammonia addition metering pump 3 by using the metering pump inlet filter screen 7, so as to increase the service life of the condensed water ammonia addition metering pump 3, and is safer.
In addition, owing to add the pencil and need carry the aqueous ammonia to the high-pressure apparatus end, add the pressure value that the medicine exported and need satisfy the requirement of equipment, so this automatic control device still is equipped with pressure buffer tank 9 and manometer 10, through the pressure of manometer 10 real-time supervision aqueous ammonia in the second pipeline 14 to ensure to add the enough height of medicine export pressure and can add the medicine smoothly. When the pressure is insufficient, the liquid level of the ammonia solution tank 1 is reduced and slowed down or even unchanged, and at the moment, maintenance personnel is prompted to clear the inlet and the outlet of the condensed water ammonia adding metering pump 3 so as to increase the pressure of a medicine adding outlet and ensure smooth medicine adding.
In a specific embodiment, the automatic control device 17 further includes a stirrer 2, one stirrer 2 is disposed on each ammonia solution tank 1, and the stirrer 2 is used to stir the ammonia water in the ammonia solution tank 1. The first control valve 6, the second control valve 8 and the third control valve 11 are all stop valves, the ammonia solution box 1 is blocked or communicated by the first control valve 6 to convey ammonia water into the first conveying pipeline 13, the condensed water ammonia addition metering pump 3 is controlled to circulate by the second control valve 8, and the ammonia water in the second conveying pipeline 14 is blocked or communicated by the third control valve 11.
In another specific embodiment, the number of the ammonia solution tanks 1 is two, and two ammonia solution tanks 1 are adopted to simultaneously convey ammonia water to the first conveying pipeline 13, so that the ammonia water conveying speed is higher, and even if one ammonia solution tank 1 fails, the ammonia water conveying speed can be ensured to be uninterrupted, further, the number of the second conveying pipelines 14 is two, and the two condensed water and ammonia metering pumps 3 are arranged in parallel, so that the ammonia water conveying amount is more accurately controlled.
Preferably, the first conveying pipe 13 and the second conveying pipe 14 are both made of 316L stainless steel, and have good corrosion resistance, excellent high-temperature strength, good work hardening property, and weak magnetism after processing.
The above description has been made on the components of the automatic control device for adding ammonia into condensed water and the connection relationship between them provided in the present embodiment, and the operation principle of the automatic control device for adding ammonia into condensed water is described in detail with reference to fig. 1.
In this embodiment, thereby realize the autotracking regulation of condensate pH value through the automatically regulated aqueous ammonia addition, the combustion engine supplyes demineralized water to condenser, and condensate, the hydrophobic recovery of heat supply network to condenser, then are carried to the low pressure steam pocket by condensate pump again, and the condensate water adds the ammonia point and also sets up on condensate pump outlet pipe simultaneously, so should select the condensate water as the supervision water sample. Wherein, the ammoniation purpose is in order to adjust the pH value, selects the pH value as tracking water quality index most directly, but the pH table need mark weekly, and the unable work of instrument during the demarcation, the life of pH table electrode only is about 10 months in addition, and the measurement deviation can be bigger and bigger in maturity, so the embodiment of the utility model provides a select the specific conductance table that the maintenance volume is minimum, measuring method is most direct as tracking index. And the specific conductance and the pH value can be converted into each other by a formula under the condition of alkaline pure water.
According to the algorithm of the PH value of the alkaline pure water log (SC) +8.56, the Specific Conductance (SC) of the condensed water is determined as the basic value of the frequency-conversion automatic adjustment of the condensed water ammonia adding metering pump 3 of the gas-steam combined cycle unit. The automatic control device for adding ammonia into condensed water in the embodiment adopts two condensed water ammonia adding metering pumps 3 which are configured in parallel to carry out ammonia water conveying, and respectively records the two condensed water ammonia adding metering pumps 3 as a first condensed water ammonia adding metering pump and a second condensed water ammonia adding metering pump, and the specific control process is as follows:
1. the specific conductance of the condensed water is normally controlled to be 13-17 us/cm, and the frequency of the first condensed water ammonia adding metering pump is controlled to be 60%. (PH: 9.67 to 9.80)
2. The specific conductance of the condensed water is reduced to 12-13 us/cm, and the frequency of the first condensed water ammonia adding metering pump is controlled to be 70%. (PH: 9.63 to 9.67)
3. The specific conductance of the condensed water is reduced to 10-11 us/cm, and the frequency of the first condensed water ammonia adding metering pump is controlled at 80%. (PH: 9.56 to 9.63)
4. The specific conductance of the condensed water is reduced to be below 10us/cm, the frequency of the first condensed water ammonia adding metering pump is controlled to be 90 percent, and the frequency of the first condensed water ammonia adding metering pump is controlled to be 50 percent by connecting with the second condensed water ammonia adding metering pump.
5. The specific conductance of the condensed water is continuously reduced to be below 9us/cm, the frequency of the first condensed water ammonia adding metering pump is controlled to be 90 percent, and the frequency of the second condensed water ammonia adding metering pump is controlled to be 90 percent.
6. The specific conductance of the condensed water is normally controlled to be 13-17 us/cm, and the frequency of the first condensed water ammonia adding metering pump is controlled to be 60%.
7. The specific conductance of the condensed water is increased to 17-20 us/cm, and the frequency of the first condensed water ammonia adding metering pump is controlled to be 40%. (PH: 9.80 to 9.86)
8. The specific conductance of the condensed water is increased to 20-25 us/cm, and the frequency of the first condensed water ammonia adding metering pump is controlled at 30%. (PH: 9.86 to 9.96)
9. The specific conductance of the condensed water is increased to be more than 25us/cm, and the first condensed water ammonia adding metering pump stops running. (PH: 9.96)
10. When the specific conductance of the condensed water is reduced to 20us/cm, a first condensed water ammoniation metering pump is started, and the frequency is controlled to be 30%.
In the process, after the frequency of the condensed water ammonia adding metering pump 3 is adjusted every time, the frequency is kept for 20 minutes, and after twenty minutes, whether the frequency of the condensed water ammonia adding metering pump 3 is maintained or continuously adjusted is judged according to the specific conductance of the condensed water.
To sum up, the present specification discloses an automatic control device for adding ammonia to condensed water, which adopts specific conductance to replace the PH value as the index of tracked water quality, and has the advantages of minimum maintenance amount and more direct measurement method.
After the automatic control device for adding ammonia into condensed water is put into operation, the specific conductance of the condensed water is basically controlled in an optimized interval of 11-14 us/cm, the corresponding pH value of the condensed water is 9.6-9.8, and the pH value interval required for overcoming low-temperature flow accelerated corrosion is completely met. In the process of starting and stopping a single unit by peak regulation and switching back pressure to a pumping and condensing running state, although the pH value fluctuates, the pH value is maintained in the range of 9.4-9.9, and the pH value is basically recovered to be normal within four hours through self regulation.
The positive conductance meter runs stably, the problem that regenerated cation exchanger resin is frequently replaced is solved, each positive conductance meter can normally run for about two weeks, particularly, the positive conductance meter cannot impact the cation exchanger resin in the frequent peak regulation process of a unit, and positive conductance is controllable. The resin regeneration process is reduced for about five times every year, the consumption of concentrated hydrochloric acid is greatly reduced, the dosage in the furnace is reduced, the consumption of ammonia water is also low, a general laboratory technician only needs to copy the data of the online meter, the frequency of manual sampling analysis is reduced, and the maintenance workload of chemical instrument maintainers is reduced.
Those of ordinary skill in the art will understand that: the figures are schematic representations of one embodiment, and the blocks or processes in the figures are not necessarily required to practice the present invention.
Those of ordinary skill in the art will understand that: modules in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, or may be located in one or more devices different from the embodiments with corresponding changes. The modules of the above embodiments may be combined into one module, or further split into multiple sub-modules.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention.
Claims (6)
1. An automatic control device for adding ammonia into condensed water is characterized by comprising:
a plurality of ammonia solution tanks;
the first conveying pipeline is communicated with the liquid outlet of each ammonia solution tank;
the first control valve is arranged between each ammonia solution tank and the first conveying pipeline;
the second conveying pipelines are led out of the first conveying pipeline, and are converged and then are connected to the outlet end of the condensate pump;
the condensed water ammonia adding metering pumps are arranged on the second conveying pipelines respectively;
the second control valve is arranged on the second conveying pipeline between the condensed water ammonia adding metering pump and the first conveying pipeline;
the metering pump inlet filter screen is arranged on the second conveying pipeline between the second control valve and the first conveying pipeline;
the check valve is arranged on the second conveying pipeline between the outlet end of the condensate pump and the condensate ammoniation metering pump;
the third control valve is arranged on the second conveying pipeline between the condensed water ammoniation metering pump and the check valve;
the pressure buffer tank is arranged on the second conveying pipeline between the third control valve and the condensed water ammonia adding metering pump;
the pressure gauge is arranged on the pressure buffer tank;
each condensed water ammoniation metering pump is electrically connected with the switch control cabinet respectively;
the switch control cabinet is electrically connected with the frequency conversion cabinet;
the sampling tube is arranged at the outlet end of the condensate pump and is used for extracting the condensate after ammonia addition;
the specific conductance meter is arranged on the sampling tube and is used for measuring the specific conductance value of the condensed water after ammonia addition;
and the signal output end of the specific conductance meter is electrically connected with the control device, and the frequency conversion cabinet is electrically connected with the control device.
2. The automatic control device for adding ammonia to condensed water according to claim 1, further comprising a stirrer, one stirrer being provided to each of the ammonia solution tanks.
3. The automatic control device for adding ammonia to condensed water according to claim 1, wherein the first control valve, the second control valve and the third control valve are all stop valves.
4. The automatic control device for adding ammonia to condensed water according to claim 1, wherein the number of the ammonia solution tanks is two.
5. The automatic control device for adding ammonia to condensed water according to claim 1, wherein the number of the second delivery pipes is two.
6. The automatic control device for adding ammonia to condensed water according to claim 1, wherein the first conveying pipeline and the second conveying pipeline are both made of 316L stainless steel.
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| CN202022942890.1U CN213518011U (en) | 2020-12-10 | 2020-12-10 | Automatic control device for adding ammonia into condensed water |
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| CN202022942890.1U CN213518011U (en) | 2020-12-10 | 2020-12-10 | Automatic control device for adding ammonia into condensed water |
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