Ammonia water heat energy recycling system
By installing a heat transfer medium storage tank and a liquid pump in the ammonia water heat energy recycling system, combined with detection and controller, the system achieves safe monitoring and automatic replenishment, solves the problem of system damage caused by ammonia water corrosion, and improves the system's safety and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QIANAN SINOCHEM COAL CHEMICAL CO LTD
- Filing Date
- 2025-04-18
- Publication Date
- 2026-05-12
AI Technical Summary
Ammonia heat recovery systems are prone to damage, affecting operational safety.
A thermal energy reuse system for ammonia water is designed. By setting up a heat transfer medium storage tank and a liquid pump, the heat transfer medium is ensured to circulate in the pipelines and various mechanisms, and is kept under positive pressure in the heat exchange mechanism. Combined with multiple detection mechanisms and controllers, the system status is monitored in real time, and the heat transfer medium is automatically replenished to reduce ammonia water leakage and corrosion.
It improves the system's safety performance, extends maintenance time, reduces the degree of corrosion of pipes and equipment, and ensures that the system remains in good working order for a long time.
Smart Images
Figure CN224230811U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of heat exchange equipment technology, specifically relating to an ammonia water heat energy reuse system. Background Technology
[0002] Coal coking involves loading blended coal into the carbonization chamber of a coke oven and subjecting it to high-temperature dry distillation under anaerobic conditions. During this process, nitrogen compounds in the coal are converted into ammonia. This ammonia, along with moisture from the coal and other moisture generated during coking, is transported to the condensation section along with the high-temperature coal gas. As the gas temperature decreases, the water vapor and other substances condense into liquid, forming ammonia water, which is then stored in a tar-ammonia water separation tank. At this point, the ammonia water temperature is approximately 75°C. Ammonia water is corrosive, and when a heat recovery system is used to recover and reuse the heat energy from the ammonia water, the system is easily damaged by the ammonia water, increasing safety hazards. Summary of the Invention
[0003] To address the technical problem that current ammonia heat recovery systems are prone to damage and affect operational safety, this application provides an ammonia heat recovery system.
[0004] In a first aspect of this application, an ammonia water thermal energy recycling system is provided, comprising a heat exchange mechanism, a heat release mechanism, a heat transfer medium storage tank, and a liquid pump connected sequentially by pipelines. The output end of the liquid pump is connected to the heat exchange mechanism. A heat transfer medium circulates within the heat exchange mechanism, the heat release mechanism, the heat transfer medium storage tank, and the liquid pump. The heat exchange mechanism is disposed within a tar-ammonia water separation tank. The heat transfer medium storage tank is provided with a liquid level acquisition mechanism and is connected to a liquid replenishment mechanism.
[0005] In some embodiments, a detection mechanism is provided in the pipeline between the heat exchange mechanism and the heat release mechanism, wherein the detection mechanism is a pH meter, conductivity meter or thermometer.
[0006] In some embodiments, a detection mechanism is provided in the pipeline between the liquid pump and the heat exchange mechanism, the detection mechanism including a pressure gauge.
[0007] In some embodiments, a detection mechanism is provided in the pipeline between the liquid pump and the heat exchange mechanism, the detection mechanism including a first flow meter.
[0008] In some embodiments, the replenishment mechanism includes a replenishment tank, a replenishment pipe connecting the replenishment tank and the heat transfer medium storage tank, and a solenoid valve disposed on the replenishment pipe.
[0009] In some embodiments, the replenishment tube is provided with a detection mechanism, which includes a second flow meter.
[0010] In some embodiments, the ammonia water thermal energy reuse system is further provided with a controller, which is electrically connected to the detection mechanism.
[0011] In some embodiments, the ammonia water heat energy reuse system is further provided with an alarm mechanism, which is electrically connected to the controller.
[0012] In some embodiments, the liquid pump is connected in parallel with a standby pump, and both the output end of the liquid pump and the output end of the standby pump are equipped with shut-off valves.
[0013] In some embodiments, the heat release mechanism includes multiple heat dissipation units arranged in parallel, each of which is connected to a flow regulating valve.
[0014] The ammonia thermal energy recycling system provided according to one or more embodiments of this application, by setting up a heat-conducting medium storage mechanism, ensures that even when the pipes and various mechanisms are filled with heat-conducting medium, the heat-conducting medium storage tank still stores a certain amount of heat-conducting medium. Even if some pipes or equipment leak, the heat-conducting medium storage tank can still ensure that each pipe is filled with heat-conducting medium, allowing the entire recycling system to maintain good operating condition for a long time, reducing safety hazards. Furthermore, by setting the liquid pump upstream of the heat exchange mechanism, i.e., the liquid pump outlet is connected to the liquid exchange mechanism inlet, the heat exchange mechanism is under positive pressure. Even if the heat exchange mechanism is damaged, ammonia water is unlikely to enter the heat exchange mechanism and will not affect the heat exchange medium. Even if ammonia water corrodes the heat exchange mechanism and causes some ammonia water to enter the various pipes or equipment, the heat-conducting medium stored in the heat-conducting medium storage tank can reduce the concentration of ammonia water entering the pipes or equipment, thereby reducing the degree of corrosion of the pipes or equipment, allowing more time for maintenance, and improving the safety performance of the recycling system. Attached Figure Description
[0015] Figure 1 A schematic diagram of the structure of an ammonia water thermal energy reuse system in one or more embodiments of this application is shown.
[0016] Explanation of reference numerals in the attached drawings: 1-Tar-ammonia-water separation tank, 2-Pipeline, 3-Heat exchange mechanism, 4-Heat dissipation unit, 5-Heat transfer medium storage tank, 6-Liquid pump, 7-Standby pump, 8-PH meter, 9-Conductivity meter, 10-Thermometer, 11-Pressure gauge, 12-First flow meter, 13-Replenishment pipe, 14-Solenoid valve, 15-Stop valve, 16-Flow regulating valve, 17-Liquid level acquisition mechanism. Detailed Implementation
[0017] To enable those skilled in the art to more clearly understand this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0018] Please see Figure 1 The first aspect of this application provides an ammonia water thermal energy reuse system for the rational use of the thermal energy of ammonia water in a tar ammonia water separation tank 1, while ensuring safety during use.
[0019] The ammonia water heat energy recycling system (hereinafter referred to as the recycling system) includes a heat exchange mechanism 3, a heat energy release mechanism, a heat transfer medium storage tank 5 and a liquid pump 6 connected in sequence through a pipeline 2. The output end of the liquid pump 6 is connected to the heat exchange mechanism 3. The heat transfer medium circulates in the heat exchange mechanism 3, the heat energy release mechanism, the heat transfer medium storage tank 5 and the liquid pump 6. The heat exchange mechanism 3 is set in the tar ammonia water separation tank 1. The heat transfer medium storage tank 5 is equipped with a liquid level acquisition mechanism 17 and is connected to a liquid replenishment mechanism.
[0020] The heat exchange mechanism 3 is a structure used to absorb the heat from the ammonia water and transfer the heat to the heat transfer medium. The heat exchange mechanism 3 can be a coil or a serpentine structure to maximize the absorption of heat energy from the ammonia water. The heat release mechanism is used to release the heat transfer medium in the pipeline to areas where heat energy needs to be utilized, such as the hot water pipe 2 of a handwashing sink or indoor heating. The heat transfer medium storage tank 5 is used to store the heat transfer medium required in the reuse system. The liquid level acquisition mechanism 17 is used to acquire the liquid level height in the heat transfer medium storage tank 5. The liquid replenishment mechanism is used to replenish the heat transfer medium in the heat transfer medium storage tank 5. The heat transfer medium can be water or a liquid with a readily heat-conducting solvent added. The liquid replenishment mechanism stores the heat transfer medium and inputs it into the heat transfer medium storage tank 5. Specifically, when the liquid level in the heat transfer medium storage tank 5 acquired by the liquid level acquisition mechanism 17 is low, the liquid replenishment mechanism is automatically activated or activated by the operator to replenish the heat transfer medium in the heat transfer medium storage tank 5, so that the heat transfer medium storage tank 5 always has a sufficient amount of heat transfer medium.
[0021] That is, by setting up a heat transfer medium storage mechanism, even when the pipes 2 and each mechanism are filled with heat transfer medium, the heat transfer medium storage tank 5 still stores a certain amount of heat transfer medium. Even if some pipes 2 or equipment leak, the heat transfer medium storage tank 5 can still ensure that each pipe 2 is filled with heat transfer medium, and the entire reuse system can maintain a good working condition for a long time, reducing safety hazards. Furthermore, the liquid pump 6 is set upstream of the heat exchange mechanism 3, that is, the outlet end of the liquid pump 6 is connected to the inlet end of the heat exchange mechanism 3. The heat exchange mechanism 3 is under positive pressure. Even if the heat exchange mechanism 3 is damaged, ammonia water is not easy to enter the heat exchange mechanism 3 and will not affect the heat exchange medium. Even if ammonia water corrodes the heat exchange mechanism 3 and causes some ammonia water to enter each pipe 2 or equipment, the heat transfer medium storage tank 5 can reduce the concentration of ammonia water entering the pipes 2 or equipment, thereby reducing the degree of corrosion of the pipes 2 or equipment, allowing more time for maintenance, and improving the safety performance of the reuse system.
[0022] Of course, the inlet of the heat transfer medium storage tank 5 for inputting the heat transfer medium is higher than the outlet for discharging the heat transfer medium, so that the heat transfer medium can smoothly enter the pipeline 2.
[0023] In some embodiments, a detection mechanism is installed in the pipe 2 between the heat exchange mechanism 3 and the heat release mechanism. This detection mechanism includes a pH meter 8, a conductivity meter 9, and / or a thermometer 10. By setting up this detection structure, it is possible to determine whether a leak has occurred. The detection mechanism can be any one, any two, or all three of the pH meter 8, conductivity meter 9, and thermometer 10. Specifically, when the pH value of the heat-conducting medium in the pipe 2 increases, the resulting change in conductivity and a sharp rise in temperature indicate a change in the heat-conducting medium within the pipe 2. Since the detection mechanism is located between the heat exchange mechanism 3 and the heat release mechanism, this change is caused by damage to the heat exchange mechanism 3. By using a detection mechanism between the heat exchange mechanism 3 and the heat release mechanism, operators can effectively determine whether a leak has occurred in the heat exchange mechanism 3, and decide whether to shut down the heat energy reuse system, thereby improving the safety performance of the reuse system during operation.
[0024] In some embodiments, a detection mechanism is provided in the pipeline 2 between the liquid pump 6 and the heat exchange mechanism 3, including a pressure gauge 11. The liquid pump 6 drives the heat transfer medium to flow in the pipeline 2 and various devices. When the value of the pressure gauge 11 between the liquid pump 6 and the heat exchange mechanism 3 changes, it can be determined whether the heat exchange mechanism 3 is damaged, effectively helping operators to determine whether the heat exchange mechanism 3 is leaking.
[0025] A detection mechanism is installed in the pipe 2 between the liquid pump 6 and the heat exchange mechanism 3, including a first flow meter 12. The first flow meter 12 can detect the flow rate of the heat transfer medium in the pipe 2 between the liquid pump 6 and the heat exchange mechanism 3 per unit time. The first flow meter 12 can be used in conjunction with the pressure gauge 11 to improve the accuracy of the operator's judgment. Specifically, if the flow rate data obtained by the first flow meter 12 increases, but the increase in the pressure gauge 11 is low or there is no increase, it can be determined that the heat exchange mechanism 3 is damaged. If the changes in the pressure gauge 11 and the first flow meter 12 are similar, other detection mechanisms can be used to determine whether the heat exchange mechanism 3 is damaged.
[0026] In some embodiments, the replenishment mechanism includes a replenishment tank, a replenishment pipe 13 connecting the replenishment tank and the heat transfer medium storage tank 5, and a solenoid valve 14 disposed on the replenishment pipe 13. That is, the solenoid valve 14 automatically opens and closes the replenishment pipe 13 so that the heat transfer medium can automatically enter the heat transfer medium storage tank 5, wherein the height of the replenishment tank is higher than that of the heat transfer medium storage tank 5.
[0027] In some embodiments, the replenishment pipe 13 is equipped with a detection mechanism, which includes a second flow meter. Specifically, if the heat exchange mechanism 3 is not damaged, the loss of the heat transfer medium is constant, meaning that the flow rate data obtained by the second flow meter per unit time will not change significantly. When the heat exchange mechanism 3 is damaged, the heat transfer medium in the pipe 2 between the heat exchange mechanism 3, the heat release mechanism, and the heat transfer medium storage tank 5 cannot smoothly enter the heat transfer medium storage tank 5. The liquid level acquisition mechanism 17 will obtain data showing a rapid drop in the liquid level of the heat transfer medium storage tank 5. The replenishment mechanism will then replenish a larger amount of heat transfer medium to the heat transfer medium storage tank 5. At this time, the flow rate data obtained by the second flow meter will increase significantly, meaning that the value of the second flow meter can also help operators determine whether the heat exchange mechanism 3 is damaged.
[0028] The ammonia water thermal energy recycling system is also equipped with a controller, which is electrically connected to the detection mechanism. The controller can receive data obtained by the detection mechanism in the recycling system and determine whether the obtained data can indicate that the heat exchange mechanism 3 is damaged. If the obtained data indicates that the heat exchange mechanism 3 is damaged, the controller sends a signal to the liquid replenishment mechanism to replenish the heat transfer medium storage tank 5 or shut down the liquid pump 6 to reduce the safety hazards caused by the damage to the heat exchange mechanism 3.
[0029] In some embodiments, the ammonia water heat energy reuse system is also equipped with an alarm mechanism, which is electrically connected to the controller. If the obtained data indicates that the heat exchange mechanism 3 is damaged, the controller sends a signal to the alarm mechanism to alert the operators. The alarm mechanism can be an alarm bell or an indicator light.
[0030] In some embodiments, a standby pump 7 is connected in parallel with the liquid pump 6. Both the output end of the liquid pump 6 and the output end of the standby pump 7 are equipped with shut-off valves 15. By providing a standby pump 7, it is easier for operators to perform regular maintenance on the liquid pump 6 in the reuse system, reducing safety hazards. Both the liquid pump 6 and the standby pump 7 are variable frequency circulating pumps.
[0031] In some embodiments, the heat release mechanism includes multiple heat dissipation units arranged in parallel, each heat dissipation unit being connected to a flow regulating valve 16. The heat dissipation units are located in indoor spaces or other facilities where heat energy is required. The flow regulating valve 16 allows personnel using heat energy to easily adjust whether to use the recovered heat energy. A thermometer 10 is installed in the space or equipment where the heat dissipation unit is located.
[0032] In some embodiments, the outer layer of the pipe 2 may be enclosed with an insulation structure to reduce heat loss.
[0033] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0034] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.
[0035] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0036] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0037] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.
Claims
1. An ammonia water thermal energy recycling system, characterized in that, The device includes a heat exchange mechanism, a heat release mechanism, a heat transfer medium storage tank, and a liquid pump connected sequentially by pipes. The output end of the liquid pump is connected to the heat exchange mechanism. The heat transfer medium circulates within the heat exchange mechanism, the heat release mechanism, the heat transfer medium storage tank, and the liquid pump. The heat exchange mechanism is located within a tar-ammonia-water separation tank. The heat transfer medium storage tank is equipped with a liquid level acquisition mechanism and is connected to a liquid replenishment mechanism.
2. The ammonia water thermal energy reuse system according to claim 1, characterized in that, The pipeline between the heat exchange mechanism and the heat release mechanism is equipped with a detection mechanism, which is a pH meter, conductivity meter or thermometer.
3. The ammonia water thermal energy recycling system according to claim 1, characterized in that, The pipeline between the liquid pump and the heat exchange mechanism is equipped with a detection mechanism, which includes a pressure gauge.
4. The ammonia water thermal energy recycling system according to claim 3, characterized in that, The pipeline between the liquid pump and the heat exchange mechanism is equipped with a detection mechanism, which includes a first flow meter.
5. The ammonia water thermal energy recycling system according to claim 1, characterized in that, The replenishment mechanism includes a replenishment tank, a replenishment pipe connecting the replenishment tank and the heat transfer medium storage tank, and a solenoid valve installed on the replenishment pipe.
6. The ammonia water thermal energy recycling system according to claim 5, characterized in that, The replenishment tube is equipped with a detection mechanism, which includes a second flow meter.
7. The ammonia water thermal energy recycling system according to any one of claims 2, 3, 4 or 6, characterized in that, The ammonia water thermal energy reuse system is also equipped with a controller, which is electrically connected to the detection mechanism.
8. The ammonia water thermal energy recycling system according to claim 7, characterized in that, The ammonia water thermal energy reuse system is also equipped with an alarm mechanism, which is electrically connected to the controller.