A skid-mounted unit integrating molten crystallization refrigerant heating and cooling

Abstract

This invention discloses an integrated skid-mounted unit for heating and cooling refrigeration of molten crystallizing refrigerant, belonging to the technical field of molten crystallizing equipment. The integrated skid-mounted unit includes a skid base, a crystallizer fixedly installed on one side of the top rear end of the skid base, a refrigeration device fixedly installed at the top center of the skid base, and a heating device fixedly installed on the other side of the top front end of the skid base. This invention, through the design of the refrigeration device, heating device, and control device, integrates them into a single skid-mounted unit structure. Compared to the dispersed arrangement of equipment in existing technologies, the system occupies less space, significantly improving space utilization. Furthermore, the entire unit can be hoisted and transported as a single unit, facilitating rapid deployment and flexible relocation to adapt to different application scenarios. Compared to existing technologies where equipment is not easily transported as a whole, deployment flexibility is significantly improved.

Description

Technical Field

[0001] This invention belongs to the technical field of melt crystallization equipment, specifically relating to a skid-mounted unit that integrates refrigerant heating and refrigeration in melt crystallization. Background Technology

[0002] With the development of chemical separation technology, melt crystallization technology has been widely used in fine chemicals, petrochemicals, and pharmaceuticals due to its advantages such as low energy consumption, high product purity, and no solvent pollution. Melt crystallization technology achieves the separation and purification of target components and impurities by controlling the melting and crystallization processes of materials, making it a highly efficient separation and purification method. The integrated melt crystallization refrigerant heating and refrigeration skid-mounted unit is a modular device that highly integrates physical phase change separation with cold and heat source supply. Its core function is to purify and separate mixtures using the melt crystallization principle through precise temperature control; simultaneously, the integrated refrigerant system provides the low-temperature environment required for crystallization, while the heating system provides the energy needed for crystal sweating or melting.

[0003] Existing melting and crystallization systems typically employ a decentralized layout, placing the refrigerant heating and cooling sections in different areas. This results in independent placement of heating and cooling equipment, with long pipelines connecting the various devices. Consequently, the system occupies a large area, has complex piping connections, and increases pressure and heat losses. Furthermore, each piece of equipment requires individual on-site installation, piping connections, electrical wiring, and commissioning, leading to a significant on-site workload and a long installation period, often taking several weeks to complete. This increases both project implementation and time costs. In addition, because the equipment is dispersed across different locations, operators must operate and monitor from multiple areas, resulting in low efficiency and high labor intensity. Moreover, the independent control of each section, lacking a unified automated management system, makes it difficult to achieve coordinated control and optimized operation of the heating and cooling sections. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a skid-mounted unit that integrates heating and cooling with molten crystallization refrigerant.

[0005] The technical solution adopted to solve the above technical problems is: a skid-mounted unit integrating melting crystallization refrigerant heating and refrigeration, including a skid base, a crystallizer is fixedly installed on one side of the top rear end of the skid base, a refrigeration device is fixedly installed at the top center of the skid base, and a heating device is fixedly installed on the other side of the top front end of the skid base. A cooling mechanism acting on the heating device is fixedly installed on one side of the top front end of the skid-mounted base, and a control device is fixedly installed on the top side of the skid-mounted base near the heating device.

[0006] Furthermore, the skid-mounted base is made of stainless steel.

[0007] Through the above technical solution, the skid-mounted base is made of Q345B structural steel. The bottom of the skid-mounted base is provided with lifting holes, which are located at the four corners of the skid-mounted base for connecting the hooks of the lifting equipment. The frame structure of the skid-mounted base bears the entire weight of the skid-mounted unit. The frame structure of the skid-mounted base is welded and treated with anti-corrosion in the factory. The surface is sprayed with epoxy zinc-rich primer and polyurethane topcoat to meet the anti-corrosion requirements for outdoor use. At the same time, the overall structure occupies less area compared with the traditional decentralized layout.

[0008] Furthermore, a feed pipe is fixedly connected to the top of the crystallizer, and a discharge pipe is fixedly connected to the bottom of the outer wall of the crystallizer.

[0009] With the above technical solution, the raw material enters the crystallizer through the feed pipe, and is crystallized, evaporated and melted in the crystallizer to obtain a high-purity molten product, which is then discharged and collected through the discharge pipe.

[0010] Furthermore, a temperature sensor is installed on the inner wall of the crystallizer, and a pressure sensor is installed on the top of the crystallizer. The temperature sensor and the pressure sensor detect the refrigerant temperature and the refrigerant pressure, respectively.

[0011] The above technical solution utilizes a PT platinum resistance temperature sensor, which is installed inside the crystallizer via a threaded connection. The temperature sensor measures the refrigerant temperature, and its output current signal is transmitted to the PLC controller. The PLC controller calculates the refrigerant temperature value based on the current signal. The pressure sensor is a diffused silicon pressure sensor, which measures the refrigerant pressure. Its current signal is also transmitted to the PLC controller. The temperature and pressure sensors are the most critical monitoring parameters in the melting and crystallization system. The temperature sensor monitors the refrigerant temperature at key locations in real time, while the pressure sensor monitors pressure changes in the piping system, thereby ensuring the safe and stable operation of the system.

[0012] Furthermore, a first connecting pipe is fixedly connected between the refrigeration device and the crystallizer, and an electric regulating valve is installed on the outer wall of the first connecting pipe. A first inlet pipe is fixedly connected to the top of one side of the refrigeration device, and a first safety valve and a second safety valve are fixedly installed on the outer wall of the first inlet pipe. A first exhaust pipe is fixedly connected to the bottom of one side of the refrigeration device, and a third safety valve is fixedly installed on the outer wall of the first exhaust pipe.

[0013] Through the above technical solution, the refrigeration unit is responsible for producing and supplying low-temperature refrigerant to the crystallizer for use in the crystallization stage. When non-condensable gas appears in the refrigeration unit, the third safety valve is opened and discharged to the outside through the first exhaust pipe. At the same time, when refrigerant needs to be added, the first safety valve and the second safety valve are opened, and external refrigerant is added through the first inlet pipe. The simultaneous setting of the first safety valve and the second safety valve greatly improves its safety. When one of the valves is damaged, the remaining valve can be used to prevent refrigerant leakage.

[0014] Furthermore, a pump set is installed between the heating device and the crystallizer. A second exhaust pipe is fixedly connected to the bottom of one side of the heating device. A fourth safety valve is fixedly installed on the outer wall of the second exhaust pipe. A second inlet pipe is fixedly connected to the top of one side of the heating device. A fifth safety valve is fixedly installed on the outer wall of the second inlet pipe.

[0015] Through the above technical solution, the heating device is responsible for producing and supplying high-temperature heat medium to the crystallizer for sweating and melting. When high-pressure gas appears in the heating device, the fourth safety valve is opened to release the high-temperature and high-pressure gas to the outside, preventing the heating device from exploding under high pressure. At the same time, when it is necessary to add heat transfer oil to the heating device, the fifth safety valve is opened and heat transfer oil is added to the inside through the second inlet pipe, so that the heating device can operate normally.

[0016] Furthermore, the cooling mechanism includes a support frame fixedly connected to one side of the top front end of the skid-mounted base. A water pipe is fixedly installed on the top of the support frame, a shut-off valve is fixedly installed at the outer end of the water pipe, and multiple nozzles are fixedly installed on the outer wall of the water pipe.

[0017] With the above technical solution, since the high-temperature and high-pressure gas emitted from the second exhaust pipe may burn personnel or damage surrounding equipment, the shut-off valve is opened at this time, and external water is supplied to multiple nozzles through water pipes, so that multiple nozzles spray water onto the second exhaust pipe to cool it down, thereby indirectly cooling the gas emitted from the second exhaust pipe.

[0018] Furthermore, all of the nozzles are located above the second exhaust pipe.

[0019] The above technical solution enables multiple nozzles to quickly cool the second exhaust pipe, preventing the high-pressure gas from scalding personnel and damaging surrounding equipment.

[0020] Furthermore, the control device is internally equipped with a PLC controller and a controller.

[0021] Through the above technical solution, the PLC controller is a Siemens S7-1200 series PLC. The PLC controller is configured with a CPU module, a digital input module, a digital output module, and an analog input module. The CPU module integrates 14 digital inputs, 10 digital outputs, and 2 analog inputs. The digital input module model is SM 1221, which provides 16 digital inputs to receive digital signals such as the operating status of the circulating pump, compressor, and fan. The digital output module model is SM 1222, which provides 16 digital outputs to control the start and stop of the circulating pump, compressor, and fan, as well as the switching of solenoid valves. The analog input module model is SM 1231, which provides 8 analog inputs to receive analog signals from temperature and pressure sensors. This allows operators to complete all operations and monitoring from one location through the control device. Compared with the existing technology that requires operation from multiple locations, the convenience of operation is significantly improved, the labor intensity of operators is reduced, and the operational safety is enhanced.

[0022] Furthermore, the refrigeration device, heating device, and control device are centrally arranged on the top of the skid-mounted base.

[0023] The above technical solution enables the refrigeration unit, heating unit, and control unit to form an integrated skid-mounted unit structure. Compared with the existing technology where the equipment is arranged separately, the system occupies less space and significantly improves space utilization. At the same time, the entire unit can be hoisted and transported as a whole unit, which facilitates rapid deployment and flexible relocation to meet the needs of different application scenarios. Compared with the existing technology where the equipment is not easy to transport as a whole, the deployment flexibility is significantly improved. In addition, the entire unit is assembled, connected, and debugged in the factory, and only simple external connections are required on site. Compared with the existing technology where each piece of equipment needs to be installed and debugged on site one by one, the on-site installation time is reduced, and the installation cost and project implementation cycle are significantly reduced.

[0024] The beneficial effects of the present invention are as follows: (1) The present invention designs a refrigeration device, a heating device and a control device to form an integrated skid-mounted unit structure. Compared with the prior art where the equipment is arranged in a dispersed manner, the system occupies a small area and significantly improves the space utilization rate. At the same time, the entire unit can be hoisted and transported as a whole unit, which is convenient for rapid deployment and flexible relocation, and can adapt to the needs of different application scenarios. Compared with the prior art where the equipment is not convenient to be transported as a whole, the deployment flexibility is significantly improved. (2) The entire unit of the present invention is assembled, connected and debugged in the factory. Only simple external connections are required on site. Compared with the prior art where each piece of equipment needs to be installed and debugged on site, the on-site installation time is reduced, and the installation cost and project implementation cycle are significantly reduced. (3) The present invention designs a control device so that the operator can complete all operations and monitoring in one place through the control device. Compared with the prior art where operations need to be performed in multiple locations, the convenience of operation is significantly improved, the labor intensity of the operator is reduced and the operation safety is improved. Attached Figure Description

[0025] Figure 1 This is an overall appearance drawing of the present invention; Figure 2 This is the overall front view of the present invention; Figure 3 This is an overall top view of the invention; Figure 4 This is an overall side view of the present invention; Figure 5 This is a schematic diagram of the cooling mechanism structure of the present invention; Figure 6 for Figure 1 A magnified view of a section at point A in the middle; Figure 7 for Figure 1 A magnified view of a section at point B in the middle; Figure 8 This is a process flow diagram of the overall device of the present invention.

[0026] Reference numerals: 1. Skid-mounted base; 2. Crystallizer; 21. Feed pipe; 22. Discharge pipe; 3. Refrigeration device; 31. First connecting pipe; 32. Electric regulating valve; 33. First replenishment pipe; 34. First safety valve; 35. Second safety valve; 36. First exhaust pipe; 37. Third safety valve; 4. Heating device; 41. Pump set; 42. Second exhaust pipe; 43. Fourth safety valve; 44. Second replenishment pipe; 45. Fifth safety valve; 5. Cooling mechanism; 501. Support frame; 502. Water pipe; 503. Shut-off valve; 504. Nozzle; 6. Control device. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0028] like Figures 1-4 As shown in the figure, this embodiment of a molten crystallization refrigerant integrated heating and cooling skid-mounted unit includes a skid-mounted base 1, which is made of stainless steel and Q345B structural steel. The bottom of the skid-mounted base 1 is provided with lifting holes, which are located at the four corners of the skid-mounted base 1 for connecting the hooks of lifting equipment. The frame structure of the skid-mounted base 1 bears the entire weight of the skid-mounted unit. The frame structure of the skid-mounted base 1 is welded and anti-corrosion treated in the factory, and the surface is sprayed with epoxy zinc-rich primer and polyurethane topcoat to meet the anti-corrosion requirements for outdoor use. At the same time, the overall structure occupies less area compared with the traditional decentralized layout.

[0029] like Figures 1-4 As shown, a crystallizer 2 is fixedly installed on one side of the top rear end of the skid-mounted base 1. A feed pipe 21 is fixedly connected to the top of the crystallizer 2, and a discharge pipe 22 is fixedly connected to the bottom of the outer wall of the crystallizer 2. Raw materials enter the crystallizer 2 through the feed pipe 21, where they undergo crystallization, evaporation, and melting to obtain a high-purity molten product, which is then discharged and collected through the discharge pipe 22. A temperature sensor is installed on the inner wall of the crystallizer 2, and a pressure sensor is installed on the top of the crystallizer 2. The temperature sensor and pressure sensor respectively detect the refrigerant temperature and refrigerant pressure. The temperature sensor 9 is a PT100 platinum resistance temperature sensor. The temperature sensor is installed inside the crystallizer 2 via a threaded connection. The temperature sensor measures the refrigerant temperature, and the output current signal measured by the temperature sensor is transmitted to the PLC controller. The PLC controller calculates the refrigerant temperature value based on the current signal. The pressure sensor is a diffused silicon pressure sensor, which measures the refrigerant pressure. The current signal measured by the pressure sensor is transmitted to the PLC controller. The temperature sensor and the pressure sensor are the most critical monitoring parameters in the melting and crystallization system. The temperature sensor monitors the temperature of the refrigerant at key locations in real time, and the pressure sensor monitors the pressure changes in the pipeline system, thereby ensuring the safe and stable operation of the system.

[0030] like Figures 1-7As shown, a refrigeration unit 3 is fixedly installed at the top center of the skid-mounted base 1. A first connecting pipe 31 is fixedly connected between the refrigeration unit 3 and the crystallizer 2. An electric regulating valve 32 is installed on the outer wall of the first connecting pipe 31. A first inlet pipe 33 is fixedly connected to the top of one side of the refrigeration unit 3. A first safety valve 34 and a second safety valve 35 are fixedly installed on the outer wall of the first inlet pipe 33. A first exhaust pipe 36 is fixedly connected to the bottom of one side of the refrigeration unit 3. A third safety valve 37 is fixedly installed on the outer wall of the first exhaust pipe 36. The refrigeration unit 3 is responsible for producing and supplying low-temperature refrigerant to the crystallizer for the crystallization stage. When non-condensable gas appears in the refrigeration unit 3, the third safety valve 37 is opened and discharged to the outside through the first exhaust pipe 36. At the same time, when refrigerant needs to be added, the first safety valve 34 and the second safety valve 35 are opened, and external refrigerant is added through the first inlet pipe 33. The simultaneous installation of the first safety valve 34 and the second safety valve 35 greatly improves its safety. When one of the valves is damaged, the remaining valve can be used to prevent refrigerant leakage.

[0031] like Figures 1-7 As shown, a heating device 4 is fixedly installed on the other side of the top front end of the skid-mounted base 1. A pump set 41 is installed between the heating device 4 and the crystallizer 2. A second exhaust pipe 42 is fixedly connected to the bottom of one side of the heating device 4. A fourth safety valve 43 is fixedly installed on the outer wall of the second exhaust pipe 42. A second inlet pipe 44 is fixedly connected to the top of one side of the heating device 4. A fifth safety valve 45 is fixedly installed on the outer wall of the second inlet pipe 44. The heating device 4 is responsible for producing and supplying high-temperature heat medium to the crystallizer 2 for sweating and melting. When high-pressure gas appears in the heating device 4, the fourth safety valve 43 is opened to discharge the high-temperature and high-pressure gas to the outside to prevent the heating device 4 from exploding under high pressure. At the same time, when it is necessary to add heat transfer oil to the heating device 4, the fifth safety valve 45 is opened and heat transfer oil is added to the inside through the second inlet pipe 44 so that the heating device 4 can operate normally.

[0032] like Figures 1-5As shown, a cooling mechanism 5 acting on the heating device 4 is fixedly installed on one side of the top front end of the skid-mounted base 1. The cooling mechanism 5 includes a support frame 501 fixedly connected to one side of the top front end of the skid-mounted base 1. A water pipe 502 is fixedly installed on the top of the support frame 501. A shut-off valve 503 is fixedly installed on the outer end of the water pipe 502. Multiple nozzles 504 are fixedly installed on the outer wall of the water pipe 502. When the second exhaust pipe 42 discharges high-temperature and high-pressure gas, the high-temperature gas may burn personnel and damage surrounding equipment. At this time, the shut-off valve 503 is opened, and external water is supplied to the multiple nozzles 504 through the water pipe 502, so that the multiple nozzles 504 spray water on the second exhaust pipe 42 to cool it down, thereby cooling the second exhaust pipe 42 and indirectly cooling the gas discharged from the second exhaust pipe 42. The multiple nozzles 504 are all located above the second exhaust pipe 42, so that the multiple nozzles 504 can quickly cool the second exhaust pipe 42 and prevent the discharged high-pressure gas from burning personnel and damaging surrounding equipment.

[0033] like Figures 1-4 As shown, a control device 6 is fixedly installed on the top of the skid-mounted base 1 near the heating device 4. The control device 6 contains a PLC controller and an analog input / output controller. The PLC controller is a Siemens S7-1200 series PLC, equipped with a CPU module, a digital input module, a digital output module, and an analog input module. The CPU module integrates 14 digital inputs, 10 digital outputs, and 2 analog inputs. The digital input module is model SM 1221, providing 16 digital inputs to receive digital signals such as the operating status of the circulating pump, compressor, and fan. The digital output module is model SM... The 1222 digital output module provides 16 digital outputs for controlling the start / stop of the circulating pump, compressor, fan, and solenoid valve. The analog input module, model SM1231, provides 8 analog inputs for receiving analog signals from temperature and pressure sensors. This allows operators to complete all operations and monitoring from a single point via the control device 6. Compared to existing technologies that require operation from multiple locations, this significantly improves operational convenience, reduces operator workload, and enhances operational safety.

[0034] like Figures 1-8As shown, the refrigeration unit 3, heating unit 4, and control unit 6 are centrally arranged on the top of the skid-mounted base 1, forming an integrated skid-mounted unit structure. Compared with the dispersed arrangement of equipment in the prior art, the system occupies less space and significantly improves space utilization. At the same time, the entire unit can be hoisted and transported as a whole unit, which facilitates rapid deployment and flexible relocation to meet the needs of different application scenarios. Compared with the inconvenience of transporting equipment as a whole in the prior art, the deployment flexibility is significantly improved. In addition, the entire unit is assembled, connected, and debugged in the factory, requiring only simple external connections on site. Compared with the prior art, which requires the installation and debugging of each piece of equipment on site, the on-site installation time is reduced, significantly reducing installation costs and project implementation cycle.

[0035] The working principle of this embodiment is as follows: When the crystallizer 2 needs to heat the material, the raw material enters the crystallizer 2 through the feed pipe 21. The control device 6 starts the heating device 4, causing the refrigerant to flow out of the molten crystallizer 2 and pass through the pump group 41. The pump group 41 delivers the refrigerant to the heating device 4, where the electric heater heats the refrigerant. The temperature of the heated refrigerant rises from the initial temperature of 20 degrees Celsius to the set temperature of 80 degrees Celsius, an increase of 60 degrees Celsius. The heated refrigerant then flows back to the crystallizer 2, where it exchanges heat with the material, transferring heat to the material and causing the material temperature to rise and melt. After releasing heat in the crystallizer 2, the temperature of the refrigerant decreases. The refrigerant temperature is 60 degrees Celsius. When the temperature drops by 20 degrees Celsius, the cooled refrigerant flows out of crystallizer 2 and enters the next cycle. The temperature sensor monitors the refrigerant temperature at the outlet of the electric heater in real time. When the monitored temperature is lower than the set temperature of 80 degrees Celsius, the control device 6 increases the heating power of the electric heater by connecting more heating tubes through a solid-state relay to increase the heating power. When the monitored temperature is higher than the set temperature of 80 degrees Celsius, the control device 6 reduces the heating power of the electric heater by disconnecting some heating tubes through a solid-state relay to reduce the heating power. Through temperature feedback and heating power adjustment, the refrigerant temperature at the outlet of crystallizer 2 is stabilized at the set temperature of 80 degrees Celsius, with a temperature fluctuation range of ±1 degree Celsius.

[0036] When crystallizer 2 needs to cool the material, control device 6 starts refrigeration device 3. Refrigerant flows out of crystallizer 2 and into refrigeration device 3. The evaporator in refrigeration device 3 cools the refrigerant, reducing its temperature from the initial temperature of 20 degrees Celsius to the set temperature of -10 degrees Celsius, a decrease of 30 degrees Celsius. The cooled refrigerant then flows back into refrigeration device 3, where it exchanges heat with the material in crystallizer 2, absorbing the material's heat and causing its temperature to drop and crystallize. After absorbing heat in crystallizer 2, the refrigerant temperature rises by 10 degrees Celsius, a 20-degree Celsius increase. The refrigerant then flows out of crystallizer 2. The cycle continues, with the temperature sensor monitoring the refrigerant temperature at the evaporator outlet in real time. When the monitored temperature is 10 degrees Celsius above the set temperature, the control device 6 increases the cooling capacity of the compressor unit in the refrigeration unit 3 by increasing the compressor speed through the frequency converter, thereby increasing the cooling capacity. When the monitored temperature is 10 degrees Celsius below the set temperature, the control device 6 reduces the cooling capacity of the compressor unit by decreasing the compressor speed through the frequency converter, thereby reducing the cooling capacity. Through temperature feedback and cooling capacity adjustment, the refrigerant temperature at the evaporator outlet is stabilized at 10 degrees Celsius below the set temperature, with a temperature fluctuation range of ±1 degree Celsius. The crystallizer 2 crystallizes, sweats, and melts the material to obtain a high-purity molten product, which is then discharged and collected through the discharge pipe 22.

[0037] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A skid-mounted unit integrating molten crystallization refrigerant heating and cooling, comprising a skid-mounted base (1), characterized in that: A crystallizer (2) is fixedly installed on one side of the top rear end of the skid-mounted base (1), a refrigeration device (3) is fixedly installed at the top center of the skid-mounted base (1), and a heating device (4) is fixedly installed on the other side of the top front end of the skid-mounted base (1). A cooling mechanism (5) acting on the heating device (4) is fixedly installed on one side of the top front end of the skid-mounted base (1), and a control device (6) is fixedly installed on the side of the top of the skid-mounted base (1) near the heating device (4).

2. The integrated skid-mounted unit for heating and cooling with molten crystallization refrigerant according to claim 1, characterized in that, The skid-mounted base (1) is made of stainless steel.

3. The integrated skid-mounted unit for heating and cooling with molten crystallization refrigerant according to claim 1, characterized in that, The top of the crystallizer (2) is fixedly connected to a feed pipe (21), and the bottom of the outer wall of the crystallizer (2) is fixedly connected to a discharge pipe (22).

4. The integrated skid-mounted unit for heating and cooling with molten crystallization refrigerant according to claim 1, characterized in that, A temperature sensor is installed on the inner wall of the crystallizer (2), and a pressure sensor is installed on the top of the crystallizer (2). The temperature sensor and the pressure sensor detect the refrigerant temperature and the refrigerant pressure, respectively.

5. The integrated skid-mounted unit for heating and cooling with molten crystallization refrigerant according to claim 1, characterized in that, A first connecting pipe (31) is fixedly connected between the refrigeration device (3) and the crystallizer (2). An electric regulating valve (32) is installed on the outer wall of the first connecting pipe (31). A first inlet pipe (33) is fixedly connected to the top of one side of the refrigeration device (3). A first safety valve (34) and a second safety valve (35) are fixedly installed on the outer wall of the first inlet pipe (33). A first exhaust pipe (36) is fixedly connected to the bottom of one side of the refrigeration device (3). A third safety valve (37) is fixedly installed on the outer wall of the first exhaust pipe (36).

6. The integrated skid-mounted unit for heating and cooling with molten crystallization refrigerant according to claim 1, characterized in that, A pump group (41) is installed between the heating device (4) and the crystallizer (2). A second exhaust pipe (42) is fixedly connected to the bottom of one side of the heating device (4). A fourth safety valve (43) is fixedly installed on the outer wall of the second exhaust pipe (42). A second inlet pipe (44) is fixedly connected to the top of one side of the heating device (4). A fifth safety valve (45) is fixedly installed on the outer wall of the second inlet pipe (44).

7. The integrated skid-mounted unit for heating and cooling with molten crystallization refrigerant according to claim 6, characterized in that, The cooling mechanism (5) includes a support frame (501) fixedly connected to one side of the top front end of the skid base (1). A water pipe (502) is fixedly installed on the top of the support frame (501). A shut-off valve (503) is fixedly installed on the outer end of the water pipe (502). Multiple nozzles (504) are fixedly installed on the outer wall of the water pipe (502).

8. The integrated skid-mounted unit for heating and cooling with molten crystallization refrigerant according to claim 7, characterized in that, The multiple nozzles (504) are located above the second exhaust pipe (42).

9. The integrated skid-mounted unit for heating and cooling with molten crystallization refrigerant according to claim 1, characterized in that, The control device (6) is equipped with a PLC controller and a controller.

10. A skid-mounted unit integrating molten crystallization refrigerant heating and cooling according to claim 1, characterized in that, The refrigeration device (3), heating device (4) and control device (6) are centrally arranged on the top of the skid-mounted base (1).

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