High-sulfur-content flash steam pressurization system with temperature control function and high-sulfur-content flash steam pressurization method

Abstract

The invention discloses a high-sulfur-content flash steam pressurization system and method with a temperature control function, the high-sulfur-content flash steam pressurization system comprises a pressurization part and a temperature control part, and the pressurization part comprises a compressor adopting diaphragm compression and is provided with a first-stage membrane head and a second-stage membrane head; the pressurizing part further comprises an inlet separator, a first-stage heat exchanger, a first-stage separator and a second-stage heat exchanger, and the inlet separator is connected to the high-sulfur-content gas inlet and the first-stage membrane head; the first-stage heat exchanger is connected to the first-stage membrane head and the first-stage heat exchanger; the first-stage heat exchanger is connected to the first-stage heat exchanger and the second-stage membrane head; the second-stage heat exchanger is respectively connected to a second-stage membrane head and a second-stage separator; and the second-stage separator is respectively connected to the second-stage heat exchanger and the high-sulfur-content gas outlet. By designing a brand-new temperature control part, good temperature regulation and control can be formed on the pressurizing part, the service life of a product is ensured, energy of the system can be effectively utilized, and the purpose of saving cost and space is achieved.

Description

Technical Field

[0001] The present invention belongs to the technical field of natural gas development, and in particular relates to a high-sulfur flash steam pressurization system and method with a temperature control function. Background Art

[0002] Natural gas processing plants and other production facilities have the problem of tail gas emissions during the production process. The current conventional treatment method is to discharge the tail gas directly into the atmosphere through flare incineration. Although this treatment method can remove most pollutants, it still causes certain environmental pollution and there is a huge waste of resources. The exhaust gas needs to be deeply treated to meet the emission requirements. Among the several components of tail gas, sulfur-containing tail gas is the most important. Natural gas processing plants need to pressurize and recover the sulfur-containing tail gas from existing and newly built desulfurization devices to replace the traditional treatment method of sulfur-containing tail gas to flare incineration.

[0003] It is extremely difficult to pressurize the sulfur-containing tail gas from the desulfurization device. Under the current process conditions, the sulfur-containing tail gas comes from flash gas. The hydrogen sulfide component in the flash gas can reach up to 80%, and it contains water, and the water content can reach 15%. In addition, there are many other media such as methane. Under this condition, the process requires the hydrogen sulfide flash gas to be pressurized from a low pressure of 10-30Kpa to an ultra-high pressure of 8-11Mpa. Therefore, the stability of the equipment will largely determine the safety of the equipment, and the control of temperature will have a great impact on the use status of the equipment. The current temperature control is generally achieved by adjusting the working intensity of the equipment as a whole to control the temperature, and it is impossible to flexibly realize real-time process control and feedback. Summary of the invention

[0004] In response to some or all of the above-mentioned problems, the present invention provides a high-sulfur flash steam boosting system and method with temperature control function. By designing a new temperature control part, it is possible to form better temperature control on the boosting part, ensure the service life of the product, and effectively utilize the system's own energy to achieve the purpose of saving cost and space.

[0005] The technical solution of the present invention is as follows: A high-sulfur flash gas boosting system with a temperature control function comprises a boosting part and a temperature control part, wherein the boosting part comprises a compressor using diaphragm compression, wherein the compressor is provided with a primary membrane head and a secondary membrane head; the boosting part also comprises an inlet separator, a primary heat exchanger, a primary separator, a secondary heat exchanger, and a secondary separator, wherein the inlet separator is connected to a high-sulfur gas inlet and a primary membrane head; the primary heat exchanger is respectively connected to the primary membrane head and the primary heat exchanger; the primary heat exchanger is respectively connected to the primary heat exchanger and the secondary membrane head; the secondary heat exchanger is respectively connected to the secondary membrane head and the secondary separator; the secondary separator is respectively connected to the secondary heat exchanger and a high-sulfur gas outlet; a control cabinet is also provided; the temperature control part comprises an internal circulation combination and an external circulation pipeline.

[0006] Furthermore, the external circulation pipeline passes through the water pipe, flows through the first-stage membrane head and the second-stage membrane head of the compressor, the external circulation water pump, the first-stage heat exchanger, and the second-stage heat exchanger; the internal circulation combination includes a finned condenser, a plate evaporator, a circulation pump, and a water tank.

[0007] Furthermore, the plate evaporator includes a plate evaporator 1 and a plate evaporator 2, the circulating pump includes an internal circulating pump and an external circulating pump, the fin type condenser includes a fin type condenser 1 and a fin type condenser 2, and the water tank includes a water tank 1 and a water tank 2.

[0008] Furthermore, the plate-type evaporator 2 includes a hot side and a cold side, the hot side is provided with two pipe openings, one hot side pipe opening is connected to an external water pipe at room temperature, and the other hot side pipe opening is connected to a water tank 2, in which a liquid level gauge 2 is provided, and the cold side is provided with two pipe openings, one cold side pipe opening is connected to a three-way regulating valve, which is respectively connected to a water tank 1 and a plate-type evaporator 1 through the three-way regulating valve, and the other cold side pipe opening is connected to a water tank 1, in which a liquid level gauge 1 is provided for judging the liquid level.

[0009] Furthermore, the plate evaporator 1 includes a water side and a fluorine side, the water side is provided with two pipe openings, one water side pipe opening is connected to water tank 1, and the other water side pipe opening is connected to a three-way regulating valve, and the fluorine side is provided with two pipe openings, one fluorine side pipe opening is connected to a fin-type condenser, and the other fluorine side pipe opening is connected to a primary heat exchanger, a primary membrane head and a secondary heat exchanger, a secondary membrane head.

[0010] Furthermore, the two pipe outlets on the fluorine side are both equipped with branch pipes, wherein one branch of the branch pipe of one fluorine side pipe outlet is sequentially connected to the first-stage separator, the first-stage membrane head, and the second fin-type condenser, and then returns to the first plate evaporator through the branch pipe of the other fluorine side pipe outlet, and the other branch of the branch pipe is sequentially connected to the second-stage separator, the second-stage membrane head, and the first fin-type condenser, and then returns to the first plate evaporator through the branch pipe of the other fluorine side pipe outlet.

[0011] Furthermore, flexible joint 2, external circulation pump inlet gate valve, external circulation pump, and external circulation pump outlet gate valve are sequentially provided from water tank 2 to the outlet; temperature sensor 1, flexible joint 1, internal circulation pump outlet gate valve, internal circulation pump, and internal circulation pump inlet gate valve are sequentially provided on the pipeline on the water side from water tank 1 to plate evaporator 1; filter 1 and thermal expansion valve 1 are sequentially provided between finned condenser 2 and the fluorine side of plate evaporator 1, and filter 2 and thermal expansion valve 2 are sequentially provided between finned condenser 1 and the fluorine side of plate evaporator 2; refrigerant filling valve 2 and refrigerant filling valve 1 are respectively provided on the pipelines from the primary heat exchanger and the secondary heat exchanger to plate evaporator 2.

[0012] Furthermore, the finned condenser 2 and the finned condenser 1 are respectively provided with matching axial flow fans 2 and axial flow fans 1.

[0013] Furthermore, a high and low pressure controller 2 is connected in the front and rear pipes of the first-stage membrane head, a high and low pressure controller 1 is connected in the front and rear pipes of the second-stage membrane head, a temperature sensor 1 is provided on the pipe from the water tank 1 to the flexible joint 1, and a temperature sensor 2 is provided on the pipe from the three-way regulating valve to the water side of the plate evaporator 2; the high and low pressure controller 2, the high and low pressure controller 1, the temperature sensor 1, the temperature sensor 2, the three-way regulating valve, and the external circulation pump outlet gate valve are all connected to the control box through an electric control circuit.

[0014] A temperature control method for a high-sulfur flash steam boosting system with a temperature control function adopts a high-sulfur gas field flash steam boosting device as described above, and the steps are as follows: Fluorine passes through the pipeline and the compressor, and becomes high-temperature and high-pressure gas. It is condensed to saturated liquid through the finned condenser and finned condenser 1, and then flows into the thermal expansion valve and thermal expansion valve after filtering to reduce the pressure before entering the plate evaporator 1 8 and plate evaporator 2. At this time, the low-pressure fluorine gas-liquid mixture absorbs the heat on the water side and becomes low-pressure gas. After passing through the primary separator and the secondary separator, it returns to the compressor for further compression. The heat on the water side is absorbed and becomes cold, and passes through the three-way regulating valve to adjust the amount of water exchanged between the external circulation and the internal circulation, and then passes through the plate evaporator 2 to absorb the heat generated by the internal circulation of the unit, thereby achieving precise control of the internal circulation water temperature.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention can realize the temperature control of the high sulfur flash steam boosting system, and its cooling source comes from the cooling water continuously generated by the internal circulation system, which can continuously exchange heat with the external circulation water through the heat exchange plate. It can make good use of the system's own space and energy to realize the temperature control of the system.

[0016] This system can effectively control the ice blockage that may occur inside when necessary, and recycle the heat of the compressor membrane head. The water flowing through the membrane head will be heated up and then reach various devices through the circulation pipeline.

[0017] By collecting data from valves and temperature sensors installed in the pipeline, the control box can calculate the required valve opening through formulas under different working conditions and execute it to ensure long-term and stable operation of the equipment.

[0018] The system is equipped with pressure, temperature, and liquid level signal monitoring points to detect changes in each position, and set corresponding alarm points, requiring all equipment to operate within the set temperature and pressure range. When the temperature exceeds the limit, the water circulation opening at the alarm point will be increased, and the system will shut down if the alarm continues, ensuring system safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the boosting system of the present invention.

[0020] Figure 2 Schematic diagram of the external circulation connecting the boosting system and the heat circulation system.

[0021] Figure 3 Schematic diagram of the internal circulation of the thermal cycle system.

[0022] In the figure: N1: high sulfur gas inlet; N2: high sulfur gas outlet; N3: cooling water inlet; N4: cooling water outlet; 1 inlet separator, 2 compressor, 2-1 primary membrane head, 2-2 secondary membrane head, 3 primary heat exchanger, 4 primary separator, 5 secondary heat exchanger, 6 secondary separator, 7 control box, 8 plate evaporator 1, 9 internal circulation pump inlet gate valve, 10 internal circulation pump, 11 internal circulation pump outlet gate valve, 12 flexible joint 1, 13 temperature sensor 1, 14 water tank 1, 15 liquid level meter 1, 16 temperature sensor 2 , 17 three-way regulating valve, 18 plate evaporator two, 19 liquid level gauge two, 20 water tank two, 21 flexible joint two, 22 external circulation pump inlet valve, 23 external circulation pump, 24 external circulation pump outlet valve, 25 axial flow fan one, 26 finned condenser one, 27 high and low pressure controller one, 28 refrigerant filling valve one, 29 thermal expansion valve one, 30 filter one, 31 refrigerant filling valve two, 32 finned condenser two, 33 high and low pressure controller two, 34 filter two, 35 thermal expansion valve two, 36 axial flow fan two. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0024] In the description of the present invention, it is necessary to understand that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "bottom", "top", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0025] like Figure 1-3 As shown, a high-sulfur flash gas boosting system with temperature control function includes a boosting part and a temperature control part, the boosting part includes a compressor 2 using diaphragm compression, the compressor 2 is a membrane compressor, and is provided with a primary membrane head 2-1 and a secondary membrane head 2-2; the boosting part also includes an inlet separator 1, a primary heat exchanger 3, a primary separator 4, a secondary heat exchanger 5, and a secondary separator 6, the inlet separator 003 is connected to the high-sulfur gas inlet N1 and the primary membrane head 2-1; the primary heat exchanger 3 is respectively connected to the primary membrane head 2-1 and the primary heat exchanger 3; the primary heat exchanger 3 is respectively connected to the primary heat exchanger 3 and the secondary membrane head 2-2; the secondary heat exchanger 5 is respectively connected to the secondary membrane head 2-2 and the secondary separator 6; the secondary separator 6 is respectively connected to the secondary heat exchanger 5 and the high-sulfur gas outlet N2; a control cabinet 7 is also provided; the temperature control part includes an internal circulation combination and an external circulation pipeline, such as Figure 3 shown.

[0026] like Figure 2 As shown, the external circulation pipeline passes through the water pipe, flows through the first membrane head 2-1 and the second membrane head 2-2 of the compressor 2, the external circulation water pump, the first separator 4, and the second separator 6; the internal circulation combination includes a finned condenser, a plate evaporator, a circulation pump, and a water tank. Specifically, the plate evaporator includes a plate evaporator 1 8 and a plate evaporator 2 18, the circulation pump includes an internal circulation pump 10 and an external circulation pump 23, the finned condenser includes a finned condenser 1 26 and a finned condenser 2 32, and the water tank includes a water tank 14 and a water tank 20. Among them, the size of the water tank 14 is larger than the water tank 20.

[0027] The plate evaporator 18 includes a hot side and a cold side. The hot side is provided with two pipe openings. One hot side pipe opening is connected to an external water pipe with normal temperature, and the other hot side pipe opening is connected to a water tank 20. A liquid level gauge 19 is provided in the water tank 20. The cold side is provided with two pipe openings. One cold side pipe opening is connected to a three-way regulating valve 17, and is respectively connected to the water tank 14 and the plate evaporator 18 through the three-way regulating valve 17. The other cold side pipe opening is connected to the water tank 14. A liquid level gauge 15 is provided in the water tank 14 for judging the liquid level. The plate evaporator 8 includes a water side and a fluorine side. The water side is provided with two pipe openings. One water side pipe opening is connected to the water tank 14, and the other water side pipe opening is connected to the three-way regulating valve 17. The fluorine side is provided with two pipe openings. One fluorine side pipe opening is connected to the finned condenser, and the other fluorine side pipe opening is connected to the primary heat exchanger 3, the primary membrane head 2-1 and the secondary heat exchanger 5, the secondary membrane head 2-2.

[0028] The two pipe openings on the fluorine side are both equipped with branch pipes, one branch of the branch pipe of one fluorine side pipe opening is connected to the primary heat exchanger 3, the primary membrane head 2-1, the finned condenser 32 in sequence, and then returns to the plate evaporator 8 through the branch pipe of the other fluorine side pipe opening, and the other branch of the branch pipe is connected to the secondary heat exchanger 5, the secondary membrane head 2-2, the finned condenser 26 in sequence, and then returns to the plate evaporator 8 through the branch pipe of the other fluorine side pipe opening.

[0029] A flexible joint 21, an external circulation pump inlet gate valve 22, an external circulation pump 23, and an external circulation pump outlet gate valve 24 are sequentially arranged from the water tank 20 to the outlet. A temperature sensor 13, a flexible joint 12, an internal circulation pump outlet gate valve 11, an internal circulation pump 10, and an internal circulation pump inlet gate valve 9 are sequentially arranged on the pipeline from the water tank 14 to the water side of the plate evaporator 8.

[0030] A filter 30 and a thermal expansion valve 29 are provided in sequence between the finned condenser 232 and the fluorine side of the plate evaporator 8, and a filter 34 and a thermal expansion valve 35 are provided in sequence between the finned condenser 26 and the fluorine side of the plate evaporator 8; a refrigerant filling valve 231 and a refrigerant filling valve 28 are provided on the pipelines from the primary heat exchanger 3 and the secondary heat exchanger 5 to the plate evaporator 8, respectively, for replenishing fluorine to the external circulation pipeline.

[0031] The finned condenser 2 32 and the finned condenser 1 26 are respectively provided with matching axial flow fans 2 36 and axial flow fans 1 25. Through the two axial flow fans, the air flow of the finned condenser is exchanged for heat, so that part of the heat taken away by the fluorine is taken away.

[0032] A high and low pressure controller 2 33 is connected to the front and rear pipes of the first membrane head 2-1, a high and low pressure controller 27 is connected to the front and rear pipes of the second membrane head 2-2, a temperature sensor 13 is provided on the pipe from the water tank 14 to the flexible joint 12, and a temperature sensor 2 16 is provided on the pipe from the three-way regulating valve 17 to the water side of the plate evaporator 2 8; the high and low pressure controller 2 33, the high and low pressure controller 27, the temperature sensor 13, the temperature sensor 2 16, the three-way regulating valve 17, and the external circulation pump outlet gate valve 24 are all connected to the control box 7 through the electric control circuit. Thus, the control box 7 can control both the boosting part and the temperature control part at the same time.

[0033] A temperature control method for a high-sulfur flash steam boosting system with a temperature control function, using a high-sulfur gas field flash steam boosting device as described above, and the steps are as follows: After the flash steam is pressurized by the first-stage membrane head, its temperature will increase. The external circulation pipeline flows through the first-stage membrane head 2-1 to cool the first-stage membrane head 2-1. At the same time, it also flows through the first-stage heat exchanger 3 and the second-stage heat exchanger 5 to reduce the temperature of the flash steam by heat exchange. At this time, the temperature of the flash steam is lower than the dew point, and water will precipitate. The water will be removed by connecting the first-stage separator 4 and the second-stage separator 6, thereby achieving the cooling of the high-sulfur flash steam pressurization system.

[0034] Specifically, fluorine passes through the pipeline, passes through the compressor 2, and becomes high-temperature and high-pressure gas, passes through the finned condenser 32 and the finned condenser 1 26 to be condensed to saturated liquid, and after filtering, flows into the thermal expansion valve 30 and the thermal expansion valve 34 to reduce the pressure, and then enters the plate evaporator 1 8 and the plate evaporator 2 18. At this time, the low-pressure fluorine gas-liquid mixture absorbs the heat on the water side and becomes low-pressure gas, and returns to the compressor for recompression after passing through the primary separator 4 and the secondary separator 6. The heat on the water side is absorbed and becomes cold, and passes through the three-way regulating valve 17 to adjust the amount of water exchanged between the external circulation and the internal circulation, and then passes through the plate evaporator 2 18 to absorb the heat generated by the internal circulation of the unit, thereby realizing precise control of the internal circulation water temperature.

[0035] During the use of the high-sulfur flash steam boosting system, when the external ambient temperature is low, ice blockage may occur inside the system. At this time, it is necessary to close the finned condenser 26, the finned condenser 2 32, the plate evaporator 2 18, and the plate evaporator 1 8, and no cooling water will be generated. At this time, the heat of the compressor 31 is recycled through the external circulation pipeline, and the water flowing through the first-level membrane head 2-1 and the second-level membrane head 2-2 will be heated up and then reach each device through the circulation pipeline.

[0036] For the external circulation pipeline, each branch has a water volume control valve and a temperature sensor, and the required valve opening is calculated by formula under different working conditions to ensure the long-term stable operation of the equipment.

[0037] The system is equipped with pressure, temperature, and liquid level signal monitoring points to detect changes in each position, and set corresponding alarm points, requiring that all equipment must operate within the set temperature and pressure range. When the temperature exceeds the set limit, the water circulation opening at the alarm point will be increased. If the alarm continues for the set time, the system will shut down.

[0038] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A high sulfur flash steam boosting system with temperature control function, characterized in that: The invention comprises a pressurizing part and a temperature control part. The pressurizing part comprises a compressor (2) using diaphragm compression, wherein the compressor (2) is provided with a primary membrane head (2-1) and a secondary membrane head (2-2); the pressurizing part also comprises an inlet separator (1), a primary heat exchanger (3), a primary separator (4), a secondary heat exchanger (5), and a secondary separator (6); the inlet separator (003) is connected to a high-sulfur gas inlet (N1) and a primary membrane head (2-1); the primary heat exchanger (3) is respectively connected to the primary membrane head (2-1) and the primary heat exchanger (3); the primary heat exchanger (3) is respectively connected to the primary heat exchanger (3) and the secondary membrane head (2-2); the secondary heat exchanger (5) is respectively connected to the secondary membrane head (2-2) and the secondary separator (6); the secondary separator (6) is respectively connected to the secondary heat exchanger (5) and a high-sulfur gas outlet (N2); a control cabinet (7) is also provided; the temperature control part comprises an internal circulation combination and an external circulation pipeline.

2. A high-sulfur flash steam boosting system with temperature control function according to claim 1, characterized in that: The external circulation pipeline passes through the water pipe, flows through the first membrane head (2-1) and the second membrane head (2-2) of the compressor (2), the external circulation water pump, the first heat exchanger (3), and the second heat exchanger (5); the internal circulation combination includes a finned condenser, a plate evaporator, a circulation pump, and a water tank.

3. A high-sulfur flash steam boosting system with temperature control function according to claim 2, characterized in that: The plate evaporator comprises a plate evaporator 1 (8) and a plate evaporator 2 (18); the circulation pump comprises an internal circulation pump (10) and an external circulation pump (23); the finned condenser comprises a finned condenser 1 (26) and a finned condenser 2 (32); and the water tank comprises a water tank 1 (14) and a water tank 2 (20).

4. A high-sulfur flash steam boosting system with temperature control function according to claim 3, characterized in that: The plate-type evaporator No. 2 (18) comprises a hot side and a cold side. The hot side is provided with two pipe openings, one of which is connected to an external water pipe at room temperature, and the other of which is connected to a water tank No. 2 (20). A liquid level gauge No. 2 (19) is provided in the water tank No. 2 (20). The cold side is provided with two pipe openings, one of which is connected to a three-way regulating valve (17) and is respectively connected to a water tank No. 1 (14) and a plate-type evaporator No. 1 (8) through the three-way regulating valve (17), and the other of which is connected to a water tank No. 1 (14). A liquid level gauge No. 1 (15) is provided in the water tank No. 1 (14) for judging the liquid level.

5. A high-sulfur flash steam boosting system with temperature control function according to claim 4, characterized in that: The plate-type evaporator 1 (8) comprises a water side and a fluorine side, the water side is provided with two pipe openings, one water side pipe opening is connected to a water tank 1 (14), and the other water side pipe opening is connected to a three-way regulating valve (17), and the fluorine side is provided with two pipe openings, one fluorine side pipe opening is connected to a fin-type condenser, and the other fluorine side pipe opening is connected to a primary separator (4), a primary membrane head (2-1) and a secondary separator (6), a secondary membrane head (2-2).

6. A high-sulfur flash steam boosting system with temperature control function according to claim 5, characterized in that: The two pipe openings on the fluorine side are both provided with branch pipes, wherein one branch pipe of the fluorine side pipe opening has one branch connected in sequence to the primary heat exchanger (3), the primary membrane head (2-1), and the second finned condenser (32), and then returns to the first plate evaporator (8) through the branch pipe of the other fluorine side pipe opening, and the other branch of the branch pipe is connected in sequence to the secondary heat exchanger (5), the secondary membrane head (2-2), and the first finned condenser (26), and then returns to the first plate evaporator (8) through the branch pipe of the other fluorine side pipe opening.

7. A high-sulfur flash steam boosting system with temperature control function according to claim 6, characterized in that: A flexible joint 2 (21), an external circulation pump inlet gate valve (22), an external circulation pump (23), and an external circulation pump outlet gate valve (24) are provided in sequence from the water tank 2 (20) to the outlet; a temperature sensor 1 (13), a flexible joint 1 (12), an internal circulation pump outlet gate valve (11), an internal circulation pump (10), and an internal circulation pump inlet gate valve (9) are provided in sequence on the pipeline from the water tank 1 (14) to the water side of the plate evaporator 1 (8); a filter 1 (30) and a thermal expansion valve 1 (29) are provided in sequence between the finned condenser 2 (32) and the fluorine side of the plate evaporator 1 (8); a filter 2 (34) and a thermal expansion valve 2 (35) are provided in sequence between the finned condenser 1 (26) and the fluorine side of the plate evaporator 2 (8); and a refrigerant liquid adding valve 2 (31) and a refrigerant liquid adding valve 1 (28) are provided on the pipelines from the primary heat exchanger (3) and the secondary heat exchanger (5) to the plate evaporator 2 (8), respectively.

8. A high-sulfur flash steam boosting system with temperature control function according to claim 7, characterized in that: The finned condenser 2 (32) and the finned condenser 1 (26) are respectively provided with a matching axial flow fan 2 (36) and axial flow fan 1 (25).

9. A high-sulfur flash steam boosting system with temperature control function according to claim 8, characterized in that: A high and low pressure controller 2 (33) is connected to the front and rear pipes of the first membrane head (2-1), a high and low pressure controller 1 (27) is connected to the front and rear pipes of the second membrane head (2-2), a temperature sensor 1 (13) is provided on the pipe from the water tank 1 (14) to the flexible joint 1 (12), and a temperature sensor 2 (16) is provided on the pipe from the three-way regulating valve (17) to the water side of the plate evaporator 2 (8); the high and low pressure controller 2 (33), the high and low pressure controller 1 (27), the temperature sensor 1 (13), the temperature sensor 2 (16), the three-way regulating valve (17), and the external circulation pump outlet gate valve (24) are all connected to the control box (7) through an electric control circuit.

10. A temperature control method for a high-sulfur flash steam boosting system with a temperature control function, characterized in that: Using a flash steam booster device for a high-sulfur gas field as claimed in claim 9, the steps are as follows: The fluorine passes through the pipeline and the compressor (2) to become a high-temperature and high-pressure gas. It passes through the finned condenser (32) and the finned condenser 1 (26) to be condensed into a saturated liquid. After being filtered, it flows into the thermal expansion valve (30) and the thermal expansion valve (34) to be reduced in pressure and then enters the plate evaporator 1 (8) and the plate evaporator 2 (18). At this time, the low-pressure fluorine gas-liquid mixture absorbs the heat on the water side and becomes a low-pressure gas. After passing through the primary separator (4) and the secondary separator (6), it returns to the compressor for further compression. After the heat on the water side is absorbed, it becomes cold and passes through the three-way regulating valve (17) to adjust the amount of water exchanged between the external circulation and the internal circulation. It then passes through the plate evaporator 2 (18) to absorb the heat generated by the internal circulation of the unit, thereby realizing precise control of the internal circulation water temperature.

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