System for regenerating high-temperature degraded molten salt

Abstract

The invention discloses a system for regenerating high-temperature degraded molten salt. The system comprises a molten salt tank, a regeneration reactor, a heat exchanger, a molten salt storage tank and a component detection device, the molten salt tank is communicated with the heat exchanger and the regeneration reactor in an on-off controllable manner; the regeneration reactor comprises a supply chamber, a gas reaction chamber and an adsorption sedimentation tank which are communicated in sequence, a path of the supply chamber for regenerating and conveying the degraded molten salt to the heat exchanger is a first regenerated molten salt conveying path; the path of the gas reaction chamber for regenerating and conveying the degraded molten salt to the heat exchanger is a second regenerated molten salt conveying path; the component detection device is used for detecting components of the molten salt entering the molten salt storage tank; according to a detection result, the system selects a first regenerated molten salt conveying path or a second regenerated molten salt conveying path to convey the molten salt; according to the scheme, the molten salt can directly flow into the heat exchanger to work, and can flow into the regeneration reactor to be regenerated, purified and utilized after long-time service, so that the technical problem of regeneration of the degraded molten salt is effectively solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of molten salt regeneration, in particular to a high-temperature deteriorated molten salt regeneration system. BACKGROUND

[0002] As a high-temperature heat transfer and storage material, molten salt has characteristics such as high boiling point, low viscosity and high heat capacity, and is an excellent heat transfer and storage medium, widely used in solar thermal power generation and energy storage systems. Through molten salt energy storage technology, renewable energy can be effectively stored, and energy utilization efficiency can be improved. With the rapid rise of solar thermal power generation technology and the increasing demand for large-capacity, high-performance and large-scale heat storage applications, the research and development of low-melting-point mixed molten salt with high decomposition temperature, high thermal conductivity and stable performance has become a hot topic among many scholars.

[0003] The molten salt system under high-temperature service conditions is a complex transfer reaction system, and the wall metal corrodes under the action of molten salt / atmosphere, and the molten salt material deteriorates. The deterioration of high-temperature molten salt directly affects the service performance and service life of the heat storage system, and is affected by many factors, including molten salt composition, alloying elements, corrosion environment, impurities, etc. Molten salt deterioration (performance decline due to high temperature, oxidation, impurity pollution, cyclic use, etc.) can trigger a series of chain consequences, involving system efficiency, equipment safety, economy, etc. The core function of molten salt is to efficiently transfer or store heat, and its deterioration will significantly reduce the heat transfer and storage performance, while the corrosion is greatly enhanced, aggravating equipment wear and tear; the chemical stability of deteriorated molten salt is greatly reduced, which is prone to violent reaction or release of harmful substances, causing flowability to deteriorate, leading to system blockage and operation failure, and thus greatly reducing the economy of the system.

[0004] However, the current research on deteriorated molten salt regeneration technology is still relatively few, and the recycling of deteriorated molten salt is still insufficient. SUMMARY

[0005] The present application relates to the technical field of molten salt regeneration, in particular to a high-temperature deteriorated molten salt regeneration system.

[0006] In order to solve the above technical problems, the application provides a high-temperature deteriorated molten salt regeneration system, which comprises a molten salt tank, a regeneration reactor, a heat exchanger, a molten salt storage tank and a component detection device; the discharge port of the molten salt tank is connected to the feed port of the heat exchanger and the feed port of the regeneration reactor in a controllable opening and closing manner; the regeneration reactor comprises a supply chamber, a gas reaction chamber and an adsorption and precipitation pool connected in sequence; the supply chamber is provided with a supply port communicated with the inside of the supply chamber and the feed port of the regeneration reactor; the supply chamber is connected to the gas reaction chamber in a controllable opening and closing manner, and the discharge port of the supply chamber is connected to the feed port of the heat exchanger and the feed port of the molten salt storage tank in a controllable opening and closing manner; the path for the deteriorated molten salt regenerated and transported to the heat exchanger in the supply chamber is a first regenerated molten salt transportation path; the gas reaction chamber is connected to a gas detection device and a gas supply device communicated with the inside of the gas reaction chamber; the gas detection device is used for detecting the gas component in the gas reaction chamber to analyze the degree of the deteriorated molten salt regeneration reaction; the gas supply device is used for inputting the gas for the deteriorated molten salt regeneration reaction into the gas reaction chamber; the path for the deteriorated molten salt regenerated and transported to the heat exchanger in the gas reaction chamber is a second regenerated molten salt transportation path; the discharge port of the adsorption and precipitation pool is connected to the feed port of the molten salt storage tank in a controllable opening and closing manner; the discharge port of the heat exchanger is connected to the feed port of the molten salt storage tank; the discharge port of the molten salt storage tank is connected to the feed port of the molten salt tank; the component detection device is used for detecting the component of the molten salt entering the molten salt storage tank; according to the detection results of the gas detection device and the component detection device, the high-temperature deteriorated molten salt regeneration system is used for selecting the first regenerated molten salt transportation path or the second regenerated molten salt transportation path for molten salt transportation.

[0007] In one of the embodiments, the feed port of the molten salt tank is connected to a molten salt inlet channel, a first feed heat exchange channel is connected between the discharge port of the molten salt tank and the feed port of the heat exchanger, and a first feed heat exchange valve with switchable opening and closing state is arranged on the first feed heat exchange channel; a deteriorated molten salt input channel is connected between the discharge port of the molten salt tank and the feed port of the regeneration reactor, and a deteriorated molten salt input valve with switchable opening and closing state is arranged on the deteriorated molten salt input channel.

[0008] In one of the embodiments, the heat exchanger is connected with a second feed heat exchange channel, and the second feed heat exchange channel is provided with a second feed heat exchange valve capable of switching between open and closed states; the third feed heat exchange channel is connected between the outlet of the supply chamber and the second feed heat exchange channel, and the third feed heat exchange channel is provided with a third feed heat exchange valve capable of switching between open and closed states; the third feed heat exchange channel and the second feed heat exchange channel form the first regenerated molten salt conveying path; the fourth feed heat exchange channel is connected between the outlet of the adsorption and precipitation tank and the second feed heat exchange channel, and the fourth feed heat exchange channel is provided with a fourth feed heat exchange valve capable of switching between open and closed states; the fourth feed heat exchange channel and the second feed heat exchange channel form the second regenerated molten salt conveying path.

[0009] In one of the embodiments, the molten salt storage tank is connected with a molten salt feed channel, and the molten salt feed channel is provided with a molten salt feed valve capable of switching between open and closed states; the second feed heat exchange channel and the molten salt feed channel are connected between the inlet of the heat exchanger and the inlet of the molten salt storage tank; the third feed heat exchange channel and the molten salt feed channel are connected between the outlet of the supply chamber and the inlet of the molten salt storage tank; the fourth feed heat exchange channel and the molten salt feed channel are connected between the outlet of the adsorption and precipitation tank and the inlet of the molten salt storage tank.

[0010] In one of the embodiments, the heat exchanger is connected with a second feed heat exchange channel, and the second feed heat exchange channel is provided with a second feed heat exchange valve capable of switching between open and closed states; the third feed heat exchange channel is connected between the outlet of the supply chamber and the second feed heat exchange channel, and the third feed heat exchange channel is provided with a third feed heat exchange valve capable of switching between open and closed states; the third feed heat exchange channel and the second feed heat exchange channel form the first regenerated molten salt conveying path; the fourth feed heat exchange channel is connected between the outlet of the adsorption and precipitation tank and the second feed heat exchange channel, and the fourth feed heat exchange channel is provided with a fourth feed heat exchange valve capable of switching between open and closed states; the fourth feed heat exchange channel and the second feed heat exchange channel form the second regenerated molten salt conveying path.

[0011] In one of the embodiments, the component detection device is connected with a component input channel, and the component input channel is connected at the intersection of the molten salt feed channel, the second feed heat exchange channel, the third feed heat exchange channel, and the fourth feed heat exchange channel.

[0012] In one of the embodiments, the supply chamber is provided with a stirrer, and the supply chamber is connected with a molten salt conveying channel between the supply chamber and the gas reaction chamber, and the molten salt conveying channel is provided with a molten salt conveying valve capable of switching between open and closed states.

[0013] In one of the embodiments, the gas reaction chamber is provided with a fixed support device and a spiral annular pipeline; the fixed support device is arranged vertically inside the gas reaction chamber; and the spiral annular pipeline surrounds the outside of the fixed support device.

[0014] In one of the embodiments, the gas detection device and the gas reaction chamber are connected in sequence with a first gas delivery channel, a gas collection device and a second gas delivery channel.

[0015] In one of the embodiments, a gas supply channel is connected between the gas supply device and the gas reaction chamber, and a gas supply valve capable of switching between open and closed states is arranged on the gas supply channel.

[0016] In one of the embodiments,

[0017] The beneficial effects of the present application are as follows:

[0018] 1. The molten salt can directly flow into the heat exchanger for work, and after long-term service, it can flow into the regeneration reactor for purification and utilization, realizing the purification and regeneration of degraded molten salt, reducing the regeneration cost, saving resource consumption, avoiding secondary pollution, and effectively solving the technical problem of degraded molten salt regeneration.

[0019] 2. The regeneration reactor is composed of a supply chamber, a gas reaction chamber and an adsorption and precipitation tank. The degraded molten salt can be used singly or in combination according to the demand, so as to accurately realize the regeneration of the molten salt. By detecting the components of the molten salt, the regeneration method of the degraded molten salt is determined. The evaporation loss of the molten salt or the reaction agent is added in the supply chamber, and the mixer is used for fully mixing the reaction, so as to realize the complete regeneration of the degraded molten salt, and the amount of new salt added is small, thereby saving the cost and reducing the solid waste.

[0020] 3. The molten salt channel in the gas reaction chamber is a spiral annular pipeline. The molten salt flows downward under the action of gravity, which can increase the contact between the degraded molten salt and the gas for reaction, and realize the regeneration of the degraded molten salt. Based on the regeneration system of molten salt recycling, the high-temperature molten salt can be recycled and regenerated, the generation cost is reduced, and the service life of the molten salt is improved. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described in the following only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0022] Figure 1 is a structural schematic diagram provided by the embodiment of the present application;

[0023] Figure 2 is Figure 1 the internal structure schematic diagram of the regeneration reactor of

[0024] The signs are as follows:

[0025] 10. Molten salt tank; 11. Molten salt inlet channel; 12. Deteriorated molten salt input channel; 13. Deteriorated molten salt input valve; 14. First feed heat exchange channel; 15. First feed heat exchange valve; 16. Heat exchanger; 17. Discharge heat exchange channel;

[0026] 20. Regeneration reactor; 21. Feed port; 22. Feed chamber; 23. Gas reaction chamber; 24. Adsorption sedimentation tank; 25. Discharge port; 26. Third feed heat exchange channel; 27. Third feed heat exchange valve; 28. Fourth feed heat exchange channel; 29. ​​Fourth feed heat exchange valve;

[0027] 30. Molten salt storage tank; 31. Second feed heat exchange valve; 32. Second feed heat exchange channel; 33. Molten salt feed valve; 34. Molten salt feed channel; 35. Molten salt discharge channel; 36. Component input channel; 37. Component detection device;

[0028] 40. Gas supply device; 41. Gas supply valve; 42. Gas supply channel; 43. Second gas delivery channel; 44. Gas collection device; 45. First gas delivery channel; 46. Gas detection device;

[0029] 50. Agitator; 51. Molten salt conveying channel; 52. Molten salt conveying valve; 53. Spiral annular pipe; 54. Fixed support device. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0031] This invention provides a method and system for regenerating high-temperature deteriorated molten salt, the implementation of which is as follows: Figure 1 As shown, it includes a molten salt tank 10, a regeneration reactor 20, a heat exchanger 16, a molten salt storage tank 30, and a component detection device 37.

[0032] Regarding the molten salt tank 10, as Figure 1 As shown, in this embodiment, the outlet of the molten salt tank 10 is connected to the inlet of the heat exchanger 16 and the inlet of the regeneration reactor 20 in a controllable manner. Specifically, the inlet of the molten salt tank 10 is connected to a molten salt inlet channel 11, and a first feed heat exchange channel 14 is connected between the outlet of the molten salt tank 10 and the inlet of the heat exchanger 16. The first feed heat exchange channel 14 is equipped with a first feed heat exchange valve 15 that can be switched between open and closed states. A deteriorated molten salt input channel 12 is connected between the outlet of the molten salt tank 10 and the inlet of the regeneration reactor 20, and a deteriorated molten salt input valve 13 that can be switched between open and closed states is provided on the deteriorated molten salt input channel 12.

[0033] After the above setting mode is adopted, if the deteriorated molten salt input valve 13 is in the closed state and the first feeding heat exchange valve 15 is in the open state, the molten salt tank 10 can send the molten salt to the heat exchanger 16 through the first feeding heat exchange channel 14 for direct application.

[0034] If it is necessary to regenerate the deteriorated molten salt, only need to close the first feeding heat exchange valve 15 and open the deteriorated molten salt input valve 13, the deteriorated molten salt in the molten salt tank 10 can be input into the regeneration reactor 20 through the deteriorated molten salt input channel 12, so that the deteriorated molten salt can be regenerated in the regeneration reactor 20.

[0035] Regarding the regeneration reactor 20, as shown in Figure 1 , this embodiment provides that the regeneration reactor 20 includes a supply chamber 22, a gas reaction chamber 23 and an adsorption and precipitation pool 24 connected in sequence.

[0036] For the supply chamber 22, as shown in Figure 1 , this embodiment provides that the supply chamber 22 is provided with a supply port 21 communicated with the inside thereof, and a feeding port of the regeneration reactor 20; the supply chamber 22 is connected to the gas reaction chamber 23 in a controllable open and closed manner, and a discharging port of the supply chamber 22 is connected to a feeding port of the heat exchanger 16 and a feeding port of the molten salt storage tank 30 in a controllable open and closed manner; the path for the deteriorated molten salt regenerated and transported to the heat exchanger 16 by the supply chamber 22 is a first regenerated molten salt transportation path.

[0037] After this setting mode is adopted, if the deteriorated molten salt needs to be regenerated in the supply chamber 22, only need to add the evaporated molten salt or the reaction agent into the supply chamber 22 through the supply port 21; if the deteriorated molten salt needs to be regenerated in the gas reaction chamber 23, only need to send the deteriorated molten salt from the supply chamber 22 to the gas reaction chamber 23 for regeneration.

[0038] Among them, as shown in Figure 1 and Figure 2 , at this time, the supply chamber 22 is internally provided with a stirrer 50, and a molten salt transportation channel 51 is connected between the supply chamber 22 and the gas reaction chamber 23, and a molten salt transportation valve 52 capable of switching between open and closed states is arranged on the molten salt transportation channel.

[0039] After this setting mode is adopted, if it is necessary to stir the deteriorated molten salt or the deteriorated molten salt needs to be regenerated in the supply chamber 22, only need to close the first regenerated molten salt transportation path and the molten salt transportation valve 52, so that the deteriorated molten salt can be stirred by the stirrer 50.

[0040] In addition, as shown in Figure 1As shown, at this time, the feed inlet of the heat exchanger 16 is connected with the second feed heat exchange channel 32, and the second feed heat exchange channel 32 is provided with a second feed heat exchange valve 31 which can switch between open and closed states; the outlet of the supply chamber 22 is connected with the third feed heat exchange channel 26 between the outlet of the supply chamber 22 and the second feed heat exchange channel 32, and the third feed heat exchange channel 26 is provided with a third feed heat exchange valve 27 which can switch between open and closed states, and the third feed heat exchange channel 26 and the second feed heat exchange channel 32 form a first regenerated molten salt conveying path.

[0041] After adopting this arrangement, only by simultaneously opening the second feed heat exchange valve 31 and the third feed heat exchange valve 27, the first regenerated molten salt conveying path can be opened, and only by closing one of the second feed heat exchange valve 31 and the third feed heat exchange valve 27, the first regenerated molten salt conveying path can be closed.

[0042] Further, as shown in Figure 1 At this time, the feed inlet of the molten salt storage tank 30 is connected with the molten salt feed channel 34, and the molten salt feed channel 34 is provided with a molten salt feed valve 33 which can switch between open and closed states; the outlet of the supply chamber 22 is connected with the feed inlet of the molten salt storage tank 30 through the third feed heat exchange channel 26 and the molten salt feed channel 34.

[0043] After adopting this arrangement, if the molten salt feed valve 33 is closed and the second feed heat exchange valve and the third feed heat exchange valve are opened, the regenerated molten salt can be conveyed to the heat exchanger 16; if the molten salt feed valve 33 and the third feed heat exchange valve are opened, the regenerated molten salt can be conveyed to the molten salt storage tank 30.

[0044] As shown in Figure 1 , this embodiment is provided with the gas detection device 46 and the gas supply device 40 which are connected with the interior of the gas reaction chamber 23; the gas detection device 46 is used for detecting the gas composition in the interior of the gas reaction chamber 23 to analyze the degree of the regenerated reaction of the deteriorated molten salt; the gas supply device 40 is used for inputting the gas for the regenerated reaction of the deteriorated molten salt into the gas reaction chamber 23; and the path for conveying the deteriorated molten salt to the heat exchanger 16 is a second regenerated molten salt conveying path.

[0045] After adopting this arrangement, once the deteriorated molten salt is conveyed into the gas reaction chamber 23 for the regenerated reaction, the gas detection device 46 can monitor the gas composition in the interior of the gas reaction chamber 23 in real time to analyze the current reaction condition; at the same time, the amount of the gas conveyed into the gas reaction chamber 23 can be timely adjusted by using the gas supply device 40, so as to meet the demand of the regenerated reaction.

[0046] Among them, as shown in Figure 1 and Figure 2As shown, at this time, the gas reaction chamber 23 is provided with a fixed support device 54 and a spiral annular pipeline 53; the fixed support device 54 is arranged in the gas reaction chamber 23 in a vertical direction; and the spiral annular pipeline 53 surrounds the outside of the fixed support device 54.

[0047] After the above arrangement, the spiral annular pipeline 53 can increase the contact between the deteriorated molten salt and the gas for reaction, so as to realize the regeneration of the deteriorated molten salt with a simple structure, complete the continuous service production of the molten salt system, and effectively improve the service efficiency and economy of the heat storage system.

[0048] In addition, as shown in the figure, at this time, the gas detection device 46 and the gas reaction chamber 23 are sequentially connected with the first gas conveying passage 45, the gas collecting device 44, and the second gas conveying passage 43. Figure 1

[0049] After the above arrangement, the gas in the gas reaction chamber 23 can be conveyed to the gas collecting device 44 through the second gas conveying passage 43, and then conveyed to the gas detection device 46 from the gas collecting device 44 through the first gas conveying passage 45, so as to realize the detection of the gas in the gas reaction chamber 23 by the gas detection device 46.

[0050] Further, as shown in the figure, at this time, the gas supply device 40 and the gas reaction chamber 23 are connected with the gas supply passage 42, and the gas supply passage 42 is provided with a gas supply valve 41 which can switch between open and closed states. Figure 1

[0051] After the above arrangement, if it is needed to supply the gas to the gas reaction chamber 23 by the gas supply device 40, the gas supply valve 41 only needs to be opened; and if it is not needed to supply the gas to the gas reaction chamber 23 by the gas supply device 40, the gas supply valve 41 only needs to be closed.

[0052] As shown in the figure, in this embodiment, the discharge port 25 of the adsorption and precipitation tank 24 and the inlet of the molten salt storage tank 30 are connected in a controllable open and closed manner; specifically, the discharge port 25 of the adsorption and precipitation tank 24 and the second inlet heat exchange passage 32 are connected with the fourth inlet heat exchange passage 28, the fourth inlet heat exchange passage 28 is provided with a fourth inlet heat exchange valve 29 which can switch between open and closed states, and the fourth inlet heat exchange passage 28 and the second inlet heat exchange passage 32 constitute a second regenerated molten salt conveying path; and the discharge port 25 of the adsorption and precipitation tank 24 is connected with the inlet of the molten salt storage tank 30 through the fourth inlet heat exchange passage 28 and the molten salt inlet passage 34. Figure 1

[0053] ​​​In this arrangement, the second feed heat exchange valve 31 and the fourth feed heat exchange valve 29 are opened, and the third feed heat exchange valve 27 and the molten salt feed valve 33 are closed, so that the regenerated molten salt is transported to the heat exchanger 16 through the second regenerated molten salt transport path.

[0054] As shown in FIG. 6, the heat exchanger 16 is arranged to have its outlet connected to the inlet of the molten salt storage tank 30. Figure 1 The outlet of the molten salt storage tank 30 is connected to the molten salt inlet channel 11 through a molten salt outlet channel 35.

[0055] In this arrangement, the molten salt feed valve 33 is closed, and the heat exchanger 16 directly transports the molten salt that has been heat exchanged to the molten salt storage tank 30 for storage, thereby achieving the storage of the molten salt in the molten salt storage tank 30 and the subsequent recycling.

[0056] As shown in FIG. 6, the molten salt storage tank 30 is arranged to have its outlet connected to the inlet of the molten salt tank 10, thereby achieving the recycling of the molten salt. Figure 1 As shown in FIG. 6, the component detection device 37 is arranged to detect the components of the molten salt entering the molten salt storage tank 30.

[0057] The outlet of the component detection device 37 is connected to the component input channel 36, which is connected to the junction of the molten salt feed channel 34, the second feed heat exchange channel 32, the third feed heat exchange channel 26, and the fourth feed heat exchange channel 28. Figure 1 In this arrangement, the component detection device 37 can obtain molten salt from any of the molten salt feed channel 34, the second feed heat exchange channel 32, the third feed heat exchange channel 26, and the fourth feed heat exchange channel 28 for detection, thereby meeting the detection requirements under different conditions.

[0058] Furthermore, based on the detection results of the gas detection device 46 and the component detection device 37, the high-temperature degraded molten salt regeneration system is used to select the first regenerated molten salt transport path or the second regenerated molten salt transport path for molten salt transport.

[0059] In this arrangement, the optimal molten salt regeneration method can be selected according to different conditions, thereby achieving cost savings and reducing solid waste.

[0060] In this arrangement, the optimal molten salt regeneration method can be selected according to different conditions, thereby achieving cost savings and reducing solid waste.

[0061] The working method of the high-temperature deteriorated molten salt regeneration system in the embodiment comprises the following steps:

[0062] (1) open the first feed heat exchange valve 15, close the deteriorated molten salt input valve 13, and the high-temperature molten salt directly enters the heat exchanger 16 for work; after long-term service, open the deteriorated molten salt input valve 13, close the first feed heat exchange valve 15, and the deteriorated molten salt flows into the regeneration reactor 20 for regeneration and purification for use;

[0063] (2) then open the third feed heat exchange valve 27 and the second feed heat exchange valve 31, close the molten salt feed valve 33 and the molten salt conveying valve 52, if the molten salt is deteriorated only due to volatilization after long-term service, add the evaporated molten salt to the replenishment chamber 22 through the replenishment port 21; if the molten salt is deteriorated due to reaction after long-term service, the reaction agent can be added to the replenishment chamber 22 through the replenishment port 21 to generate the initial molten salt by reaction, and the deteriorated molten salt is regenerated completely and then enters the heat exchanger 16 for work;

[0064] (3) if the molten salt is deteriorated due to reaction after long-term service, the initial molten salt can be generated by reaction with gas, then the regeneration reactor 20 is used in combination, the gas supply valve 41 is opened, and the required reaction gas is introduced into the gas reaction chamber 23; the fourth feed heat exchange valve 29, the molten salt feed valve 33, and the molten salt conveying valve 52 are opened, and the third feed heat exchange valve 27 and the second feed heat exchange valve 31 are closed, the deteriorated molten salt flows into the gas reaction chamber 23 from the replenishment chamber 22, the molten salt flows downward under the action of gravity through the spiral annular pipeline 53, and fully contacts with the gas to react, so that the deteriorated molten salt is regenerated and then flows into the molten salt storage tank 30 through the discharge port 25 for recycling and utilization;

[0065] (4) when the regeneration is only performed in the replenishment chamber 22, the components of the molten salt before and after regeneration are detected by the component detection device 37, if the components of the regenerated molten salt are consistent with those of the initial molten salt, the regeneration reaction is completed; if the regeneration reactor 20 is used in combination, and the components of the discharged gas are detected by the gas detection device 46, the regeneration reaction degree of the deteriorated molten salt is analyzed, and the regeneration method path of the deteriorated molten salt is optimized, when the components of the discharged gas are mainly the generated gas in the reaction process, the regeneration and utilization of the deteriorated molten salt are effectively performed.

[0066] The above describes the preferred embodiment of the present application, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements are also considered within the protection scope of the present application.

Claims

1. A system for regenerating high-temperature deteriorated molten salt, characterized in that, it comprises a molten salt tank, a regeneration reactor, a heat exchanger, a molten salt storage tank and a component detection device; the outlet of the molten salt tank is connected to the inlet of the heat exchanger and the inlet of the regeneration reactor in a controllable open and close manner; the regeneration reactor comprises a supply chamber, a gas reaction chamber and an adsorption and precipitation pool connected in sequence; the supply chamber is provided with a supply port communicated with its interior and the inlet of the regeneration reactor; the supply chamber is connected to the gas reaction chamber in a controllable open and close manner; the outlet of the supply chamber is connected to the inlet of the heat exchanger and the inlet of the molten salt storage tank in a controllable open and close manner; the path for the deteriorated molten salt regenerated in the supply chamber to be transported to the heat exchanger is a first regenerated molten salt transportation path; the gas reaction chamber is connected to a gas detection device and a gas supply device communicated with its interior; the gas detection device is used for detecting the gas components in the interior of the gas reaction chamber to analyze the degree of regeneration reaction of the deteriorated molten salt; the gas supply device is used for inputting gas for the regeneration reaction of the deteriorated molten salt into the gas reaction chamber; the path for the deteriorated molten salt regenerated in the gas reaction chamber to be transported to the heat exchanger is a second regenerated molten salt transportation path; the discharge port of the adsorption and precipitation pool is connected to the inlet of the molten salt storage tank in a controllable open and close manner; the outlet of the heat exchanger is connected to the inlet of the molten salt storage tank; the outlet of the molten salt storage tank is connected to the inlet of the molten salt tank; the component detection device is used for detecting the components of the molten salt entering the molten salt storage tank; according to the detection results of the gas detection device and the component detection device, the system for regenerating high-temperature deteriorated molten salt is used for selecting the first regenerated molten salt transportation path or the second regenerated molten salt transportation path for molten salt transportation.

2. The system according to claim 1, characterized in that, the inlet of the molten salt tank is connected to a molten salt inlet channel; a first feed heat exchange channel is connected between the outlet of the molten salt tank and the inlet of the heat exchanger; a first feed heat exchange valve with switchable open and close state is arranged on the first feed heat exchange channel; a deteriorated molten salt input channel is connected between the outlet of the molten salt tank and the inlet of the regeneration reactor; a deteriorated molten salt input valve with switchable open and close state is arranged on the deteriorated molten salt input channel.

3. The system according to any one of claims 1 or 2, characterized in that, a second feed heat exchange channel is connected to the inlet of the heat exchanger; a second feed heat exchange valve with switchable open and close state is arranged on the second feed heat exchange channel; a third feed heat exchange channel is connected between the outlet of the supply chamber and the second feed heat exchange channel; a third feed heat exchange valve with switchable open and close state is arranged on the third feed heat exchange channel; the third feed heat exchange channel and the second feed heat exchange channel constitute the first regenerated molten salt transportation path. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The discharge port of the adsorption and precipitation tank is connected with the fourth feed heat exchange channel, and a fourth feed heat exchange valve with switchable open and close state is arranged on the fourth feed heat exchange channel, and the fourth feed heat exchange channel and the second feed heat exchange channel form the second regenerated molten salt conveying path.

4. The system according to claim 3, characterized in that, The feed port of the molten salt storage tank is connected with a molten salt feed channel, and a molten salt feed valve with switchable open and close state is arranged on the molten salt feed channel; The feed port of the heat exchanger is connected with the feed port of the molten salt storage tank through the second feed heat exchange channel and the molten salt feed channel; The discharge port of the replenishment chamber is connected with the feed port of the molten salt storage tank through the third feed heat exchange channel and the molten salt feed channel; The discharge port of the adsorption and precipitation tank is connected with the feed port of the molten salt storage tank through the fourth feed heat exchange channel and the molten salt feed channel.

5. The system according to claim 4, characterized in that, The discharge port of the heat exchanger is connected with the feed port of the molten salt storage tank through the fourth feed heat exchange channel and the molten salt feed channel; The discharge port of the molten salt storage tank is connected with the molten salt inlet channel through a molten salt discharge channel.

6. The system according to claim 4, characterized in that, The feed port of the component detection device is connected with a component input channel, and the component input channel is connected at the intersection of the molten salt feed channel, the second feed heat exchange channel, the third feed heat exchange channel and the fourth feed heat exchange channel.

7. The system according to claim 1, characterized in that, An agitator is arranged inside the replenishment chamber, a molten salt conveying channel is connected between the replenishment chamber and the gas reaction chamber, and a molten salt conveying valve with switchable open and close state is arranged on the molten salt conveying channel.

8. The system according to claim 1, characterized in that, A fixed support device and a spiral annular pipeline are arranged in the gas reaction chamber; The fixed support device is arranged vertically inside the gas reaction chamber; The spiral annular pipeline surrounds the outside of the fixed support device.

9. The system according to claim 1, characterized in that, A first gas conveying channel, a gas collecting device and a second gas conveying channel are sequentially connected between the gas detection device and the gas reaction chamber.

10. The system according to claim 1, characterized in that, A gas supply channel is connected between the gas supply device and the gas reaction chamber, and a gas supply valve with switchable open and close state is arranged on the gas supply channel.

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