A shell-and-tube heat exchanger and Fischer-Tropsch synthesis slurry bed reactor

Abstract

The present invention relates to the technical field of chemical equipment, specifically a shell-and-tube heat exchanger and a Fischer-Tropsch synthesis slurry bed reactor, comprising a base, the upper outer surface of the base is fixedly connected to a water tank, the upper outer surface of the water tank is fixedly connected to a fixed bottom plate, the upper outer surface of the fixed bottom plate is fixedly connected to a heat absorbing plate, a through hole is provided inside the heat absorbing plate, one end of the through hole is fixedly connected to a water inlet pipe, and the other end of the through hole is fixedly connected to a water outlet pipe. The present invention provides a temperature control mechanism, and provides a first coil and a second coil, so that the two are used in conjunction with the through hole to enhance the heat exchange efficiency of the device, and the heat exchange intensity of the device can be adjusted according to actual conditions by controlling the water supply state of the water inlet pipe, the first coil and the second coil, and the purpose of controlling the temperature of the reactor body can be achieved by providing heating fins, thereby increasing the production efficiency of the reactor.

Description

Technical Field

[0001] The invention relates to the technical field of chemical equipment, in particular to a shell-and-tube heat exchanger and a Fischer-Tropsch synthesis slurry bed reactor. Background Art

[0002] Due to the shortage of oil resources in my country, in order to ensure national energy security and in combination with the characteristics of my country's energy structure, using coal as raw material to produce liquid fuel is an effective way to alleviate this problem, among which Fischer-Tropsch synthesis is one of the main methods. Fischer-Tropsch synthesis is a method of preparing synthesis gas from coal or natural gas, and producing hydrocarbon or alcohol liquid fuels under the catalytic action of a catalyst mainly composed of iron or cobalt at a temperature of 400-500°C.

[0003] Since the Fischer-Tropsch synthesis reaction is a highly exothermic reaction with a large amount of heat released, local overheating of the catalyst often occurs during the Fischer-Tropsch synthesis reaction, causing carbon deposition on the catalyst and even clogging the bed, resulting in reduced product selectivity. Therefore, it is necessary to effectively remove the heat generated in the reactor to ensure the safety of the reactor operation and to improve the yield of the target product.

[0004] Since the distribution of Fischer-Tropsch synthesis products and the activity of the catalyst are very sensitive to temperature, maintaining a relatively constant temperature in the reactor is very important for the smooth progress and safe operation of the reaction in the slurry bed reactor. The shell-and-tube heat exchanger in the prior art has a low heat transfer efficiency and does not have a temperature control and temperature regulation effect. It cannot be well applied to the Fischer-Tropsch synthesis slurry bed reactor, affecting the production efficiency of the reactor. In addition, since the reaction gas must be preheated before entering the reactor, a special preheater is generally required, which not only increases the space occupied by the equipment, but also increases the manufacturing cost.

[0005] To this end, a shell-and-tube heat exchanger and a Fischer-Tropsch synthesis slurry bed reactor are proposed. Summary of the invention

[0006] The object of the present invention is to provide a shell-and-tube heat exchanger and a Fischer-Tropsch synthesis slurry bed reactor to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a shell-and-tube heat exchanger and a Fischer-Tropsch synthesis slurry bed reactor, comprising a base, an upper outer surface of the base is fixedly connected to a water tank, an upper outer surface of the water tank is fixedly connected to a fixed bottom plate, an upper outer surface of the fixed bottom plate is fixedly connected to a heat absorbing plate, a through hole is opened inside the heat absorbing plate, one end of the through hole is fixedly connected to a water inlet pipe, and the other end of the through hole is fixedly connected to a water outlet pipe, the annular inner surface of the heat absorbing plate is fixedly connected to a reactor body, and the annular outer surface of the reactor body is fixedly connected to a temperature control mechanism.

[0008] The present invention provides a temperature control mechanism, and provides a first spiral tube and a second spiral tube, and makes the two cooperate with the through hole to enhance the heat exchange efficiency of the device. By controlling the water supply state of the water inlet pipe, the first spiral tube and the second spiral tube, the heat exchange intensity of the device can be adjusted according to actual conditions. By providing heating fins, the temperature of the reactor body can be controlled, so that the device can be better applied to the Fischer-Tropsch synthesis slurry bed reactor, and the production efficiency of the reactor is increased. By providing a gas supply pipe and cooperating with the heating fins to achieve the purpose of preheating the reaction gas, there is no need to equip a special preheater, which not only reduces the space occupied by the equipment, but also reduces the manufacturing cost.

[0009] Preferably, the inner diameter of the through hole is the same as the inner diameter of the water inlet pipe and the water outlet pipe, the temperature control mechanism includes heating fins, a first coil and a second coil, a plurality of the heating fins are fixedly connected to the annular outer surface of the heat absorbing plate, the first coil is connected through the inner side of the heating fin close to the heat absorbing plate, the second coil is connected through the inner side of the heating fin close to the outer side of the first coil, one end of the first coil and the second coil are both water inlet ends, and the other ends of both are water outlet ends.

[0010] During operation, since the distribution of Fischer-Tropsch synthesis products and the activity of the catalyst are very sensitive to temperature, maintaining a relatively constant temperature in the reactor is very important for the smooth progress of the reaction and safe operation in the slurry bed reactor. The shell-and-tube heat exchanger in the prior art has low heat exchange efficiency and does not have a temperature control and temperature regulation effect. It cannot be well applied to the Fischer-Tropsch synthesis slurry bed reactor, affecting the production efficiency of the reactor. The present invention arranges a temperature control mechanism. When the temperature inside the reactor body is too high and needs to be cooled, cold water is introduced into the water inlet pipe. The cold water enters the through hole through the water inlet pipe and circulates, absorbing the heat inside the heat absorbing plate and then flows out through the water outlet pipe. At the same time, cold water is introduced into the water inlet end of the first spiral tube and the second spiral tube. The cold water circulates along the inside of the first spiral tube and the second spiral tube, absorbing the heat inside the heating fins, and finally flows out from the outlet of the first spiral tube and the second spiral tube. The water is discharged from the water end, thereby achieving the purpose of heat exchange for the heat generated inside the reactor body, thereby achieving the effect of cooling. If the temperature inside the reactor body is low, the water supply operation to the first coil, the second coil and the water inlet pipe can be stopped, and the heating fins are powered on for heating at the same time, so that the heat of the heating fins is transferred from the heat absorbing plate to the reactor body, and the reactor body is heated. The present invention provides a temperature control mechanism, and provides the first coil and the second coil, so that the two are used in conjunction with the through hole to enhance the heat exchange efficiency of the device. By controlling the water supply state of the water inlet pipe, the first coil and the second coil, the heat exchange intensity of the device can be adjusted according to actual conditions, and the purpose of controlling the temperature of the reactor body can be achieved by providing heating fins, so that the device can be better applied to the Fischer-Tropsch synthesis slurry bed reactor, thereby increasing the production efficiency of the reactor.

[0011] Preferably, a gas pipe is connected through the interior of the heating fin near the outer side of the second spiral tube, one end of the gas pipe is fixedly connected to the center of the upper outer surface of the reactor body, and the other end is an air inlet end.

[0012] During operation, since the reaction gas needs to be preheated before entering the reactor, a special preheater is generally required, which not only increases the space occupied by the equipment, but also increases the manufacturing cost. The present invention sets a gas pipe and cooperates with the heating fins. Before the reaction gas is introduced into the reactor body, the heating fins are first powered on for heating, and then the reaction gas is introduced into the gas pipe from the air inlet end. The reaction gas flows along the inside of the gas pipe and absorbs the heat generated by the heating fins, thereby achieving the purpose of preheating. The heated reaction gas finally flows into the reactor body. The present invention sets a gas pipe and cooperates with the heating fins to achieve the purpose of preheating the reaction gas. There is no need to equip a special preheater, which not only reduces the space occupied by the equipment, but also reduces the manufacturing cost.

[0013] Preferably, the through hole is designed in an annular spiral structure to increase the contact area between it and the heat absorbing plate, and the first spiral tube, the second spiral tube and the air supply pipe are all designed in a U-shaped spiral structure to increase the contact area between the three and the heating fins.

[0014] During operation, the heat exchange effect on cold water and reaction gas can be improved by increasing the contact area between the through hole and the heat absorbing plate, and increasing the contact area between the first spiral tube, the second spiral tube, the gas pipe and the heating fins.

[0015] Preferably, the heat absorbing plate and the heating fins are both made of aluminum alloy and have good heat absorbing performance.

[0016] During operation, by making the heat absorbing plate and the heating fins from aluminum alloy, the heat absorbing performance of the two can be enhanced, thereby improving the heat exchange efficiency.

[0017] Preferably, a protective mechanism is fixedly connected to the outer surface of the upper end of the base;

[0018] The protection mechanism comprises a protection plate, which is fixedly connected to the edge of the upper outer surface of the water tank, and the interior of the water tank is filled with cold water.

[0019] During operation, due to the good heat absorption performance of the heating fins, if no protective mechanism is provided for protection, it is easy for the human body to come into contact with the heating fins and get burned, thereby reducing the safety of the device. The present invention provides a protective mechanism and a protective plate on the outside of the heating fins to prevent the human body from coming into contact with the heating fins and getting burned, thereby increasing the safety of the device.

[0020] Preferably, the interior of the protective plate is filled with a water-absorbing sponge, the lower end of the water-absorbing sponge penetrates the water tank and extends to the bottom end of the inner surface of the water tank, and the outer surface of the protective plate is provided with a plurality of first through grooves.

[0021] During operation, although the protective plate can prevent the human body from coming into contact with the heating fins and causing burns, the protective plate also hinders the heat dissipation of the heating fins, thereby affecting the cooling effect of the device. The present invention fills an absorbent sponge inside the protective plate and uses the absorbent sponge to absorb cold water inside the water tank. The cold water absorbs the heat emitted by the heating fins to evaporate and absorb heat, taking away the heat, thereby further improving the cooling effect of the device.

[0022] Preferably, a dustproof net is fixedly connected to the annular inner surface of the first through groove to prevent the water-absorbing sponge from being contaminated by dust.

[0023] When working, dust is isolated through the dustproof net, the overall cleanliness of the water-absorbing sponge is maintained, and the service life of the water-absorbing sponge is increased.

[0024] Preferably, a water supply pipe is fixedly connected to one side of the outer surface of the lower end of the water tank, and a water level sensor is provided on the annular inner surface of the water tank.

[0025] During operation, since the water absorbed by the absorbent sponge is continuously evaporated, it is necessary to continuously absorb cold water into the water tank, thereby continuously replenishing water into the water tank. The present invention arranges a water level sensor. When the cold water level inside the water tank drops to a certain position, the water level sensor sends an electrical signal to control the cold water to be automatically added to the water tank from the water supply pipe. When the water level inside the water tank rises to an appropriate position, the water level sensor sends an electrical signal again to cut off the water supply, so as to achieve the purpose of automatic water addition without manual water addition.

[0026] Preferably, a plurality of electric telescopic rods are evenly and fixedly connected to the upper outer surface of the water tank at a position inside the protective plate, a lifting plate is fixedly connected to the upper outer surface of the electric telescopic rods, an insulating slide is fixedly connected to the edge of the upper outer surface of the lifting plate, both ends of the outer surface of the protective plate are slidably connected to the insulating slide, and a plurality of second through grooves are provided on the outer surface of the insulating slide near the first through groove.

[0027] During operation, the present invention provides a heat-insulating slide plate. When the temperature inside the reactor body is low, the heating fins need to be electrically heated so that the heat of the heating fins is transferred from the heat-absorbing plate to the reactor body to heat the inside of the reactor body and preheat the reaction gas, the electric telescopic rod can be started to extend, so that the electric telescopic rod drives the lifting plate and the heat-insulating slide plate to move upward, and the second through groove and the first through groove are intertwined with each other, thereby insulating the water-absorbing sponge and preventing the water-absorbing sponge from absorbing the heat generated by the heating fins, thereby affecting the heating effect of the heating fins on the reactor body and the reaction gas.

[0028] Compared with the prior art, the present invention has the following beneficial effects:

[0029] The present invention provides a temperature control mechanism, provides a first coil and a second coil, and uses the two in conjunction with a through hole to enhance the heat exchange efficiency of the device; controls the water supply state of the water inlet pipe, the first coil and the second coil, so that the heat exchange intensity of the device can be adjusted according to actual conditions; and provides heating fins to achieve the purpose of controlling the temperature of the reactor body, so that the device can be better applied to the Fischer-Tropsch synthesis slurry bed reactor, thereby increasing the production efficiency of the reactor; provides a gas transmission pipe and cooperates with the heating fins to achieve the purpose of preheating the reaction gas, without the need for a special preheater, which not only reduces the space occupied by the equipment, but also reduces the manufacturing cost; provides a protective mechanism, and uses a protective plate on the outside of the heating fin to prevent the human body from contacting with the heating fin and causing burns, thereby increasing the safety of the device; and fills the protective plate with a water-absorbing sponge, uses the water-absorbing sponge to absorb cold water in the water tank, and the cold water absorbs the heat emitted by the heating fins to evaporate and absorb heat, taking away the heat, thereby further improving the cooling effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the combination of the reactor body and the heating fins of the present invention;

[0032] Figure 3 It is a cross-sectional view of the combination of the reactor body and the heat absorbing plate of the present invention;

[0033] Figure 4 is a schematic structural diagram of a first spiral tube of the present invention;

[0034] Figure 5 It is a schematic diagram of the combination of the reactor body and the gas transmission pipe of the present invention;

[0035] Figure 6 For the present invention Figure 1 A magnified view of the structure at A;

[0036] Figure 7 For the present invention Figure 3 A magnified view of the structure at B in FIG.

[0037] Figure 8 It is a cross-sectional view of the combination of the heat insulation slide plate and the protective plate of the present invention.

[0038] In the figure: 1. base; 11. fixed bottom plate; 12. heat absorbing plate; 13. reactor body; 14. through hole; 15. water inlet pipe; 16. water outlet pipe; 17. water tank; 2. temperature control mechanism; 21. heating fins; 22. first spiral tube; 23. second spiral tube; 24. gas pipe; 3. protection mechanism; 31. protection plate; 32. water-absorbing sponge; 33. first through groove; 34. dustproof net; 35. water supply pipe; 36. water level sensor; 37. electric telescopic rod; 38. lifting plate; 39. heat-insulating slide plate; 310. second through groove. DETAILED DESCRIPTION

[0039] The following is a partial embodiment of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0041] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] See also Figures 1 to 8 The present invention provides a technical solution of a shell-and-tube heat exchanger and a Fischer-Tropsch synthesis slurry bed reactor:

[0043] A shell and tube heat exchanger and a Fischer-Tropsch synthesis slurry bed reactor, such as Figures 1 to 3As shown, it includes a base 1, the upper outer surface of the base 1 is fixedly connected to a water tank 17, the upper outer surface of the water tank 17 is fixedly connected to a fixed bottom plate 11, the upper outer surface of the fixed bottom plate 11 is fixedly connected to a heat absorbing plate 12, a through hole 14 is opened inside the heat absorbing plate 12, one end of the through hole 14 is fixedly connected to a water inlet pipe 15, the other end of the through hole 14 is fixedly connected to a water outlet pipe 16, the annular inner surface of the heat absorbing plate 12 is fixedly connected to a reactor body 13, and the annular outer surface of the reactor body 13 is fixedly connected to a temperature control mechanism 2.

[0044] The present invention provides a temperature control mechanism 2, and provides a first spiral tube 22 and a second spiral tube 23, so that the two are used in conjunction with the through hole 14 to enhance the heat exchange efficiency of the device. By controlling the water supply state of the water inlet pipe 15, the first spiral tube 22 and the second spiral tube 23, the heat exchange intensity of the device can be adjusted according to actual conditions. By providing a heating fin 21, the temperature of the reactor body 13 can be controlled, so that the device can be better applied to the Fischer-Tropsch synthesis slurry bed reactor, thereby increasing the production efficiency of the reactor. By providing a gas supply pipe 24 and using it in conjunction with the heating fin 21, the purpose of preheating the reaction gas can be achieved without the need for a special preheater, which not only reduces the space occupied by the equipment, but also reduces the manufacturing cost.

[0045] As an embodiment of the present invention, Figure 2 and Figure 4 As shown, the inner diameter of the through hole 14 is the same as the inner diameter of the water inlet pipe 15 and the water outlet pipe 16. The temperature control mechanism 2 includes a heating fin 21, a first spiral tube 22 and a second spiral tube 23. Several of the heating fins 21 are fixedly connected to the annular outer surface of the heat absorbing plate 12. The first spiral tube 22 is penetrated and connected to the side of the inner part of the heating fin 21 close to the heat absorbing plate 12. The second spiral tube 23 is penetrated and connected to the position of the inner part of the heating fin 21 close to the outer side of the first spiral tube 22. One end of the first spiral tube 22 and the second spiral tube 23 are both water inlet ends, and the other ends of both are water outlet ends.

[0046] During operation, since the distribution of Fischer-Tropsch synthesis products and the activity of the catalyst are very sensitive to temperature, maintaining a relatively constant temperature in the reactor is very important for the smooth progress and safe operation of the reaction in the slurry bed reactor. The shell-and-tube heat exchanger in the prior art has low heat exchange efficiency and does not have a temperature control and temperature regulation effect. It cannot be well applied to the Fischer-Tropsch synthesis slurry bed reactor, affecting the production efficiency of the reactor. The present invention sets a temperature control mechanism 2. When the internal temperature of the reactor body 13 is too high and needs to be cooled, cold water is introduced into the water inlet pipe 15. The cold water enters the through hole 14 from the water inlet pipe 15 and circulates to absorb the heat inside the heat absorption plate 12, and then flows out from the water outlet pipe 16. At the same time, cold water is introduced into the water inlet ends of the first spiral tube 22 and the second spiral tube 23. The cold water circulates along the inside of the first spiral tube 22 and the second spiral tube 23, absorbs the heat inside the heating fin 21, and is finally discharged from the water outlet ends of the first spiral tube 22 and the second spiral tube 23. Thereby, the purpose of heat exchange of the heat generated inside the reactor body 13 is achieved, thereby realizing the effect of cooling. If the temperature inside the reactor body 13 is low, the water supply operation of the first spiral tube 22, the second spiral tube 23 and the water inlet pipe 15 can be stopped, and the heating fins 21 are powered on for heating at the same time, so that the heat of the heating fins 21 is transferred from the heat absorbing plate 12 to the reactor body 13, and the reactor body 13 is heated. The present invention sets a temperature control mechanism 2, sets a first spiral tube 22 and a second spiral tube 23, and uses the two together with the through hole 14 to enhance the heat exchange efficiency of the device. By controlling the water supply state of the water inlet pipe 15, the first spiral tube 22 and the second spiral tube 23, the heat exchange intensity of the device can be adjusted according to actual conditions, and the purpose of controlling the temperature of the reactor body 13 can be achieved by setting the heating fins 21, so that the device can be better applied to the Fischer-Tropsch synthesis slurry bed reactor, thereby increasing the production efficiency of the reactor.

[0047] As an embodiment of the present invention, Figure 2 and Figure 5 As shown, a gas pipe 24 is connected through the interior of the heating fin 21 near the outside of the second spiral tube 23. One end of the gas pipe 24 is fixedly connected to the center of the upper outer surface of the reactor body 13, and the other end is the air inlet end.

[0048] During operation, since the reaction gas needs to be preheated before entering the reactor, a special preheater is generally required, which not only increases the space occupied by the equipment, but also increases the manufacturing cost. The present invention sets a gas pipe 24 and cooperates with the heating fins 21. Before the reaction gas is introduced into the reactor body 13, the heating fins 21 are first powered on for heating, and then the reaction gas is introduced into the gas pipe 24 from the air inlet end. The reaction gas flows along the inside of the gas pipe 24 and absorbs the heat generated by the heating fins 21, thereby achieving the purpose of preheating. The heated reaction gas finally flows into the reactor body 13. The present invention sets a gas pipe 24 and cooperates with the heating fins 21 to achieve the purpose of preheating the reaction gas. There is no need to equip a special preheater, which not only reduces the space occupied by the equipment, but also reduces the manufacturing cost.

[0049] As an embodiment of the present invention, Figures 2 to 5 As shown, the through hole 14 is designed in an annular spiral structure to increase the contact area between it and the heat absorbing plate 12, and the first spiral tube 22, the second spiral tube 23 and the air supply pipe 24 are all designed in a U-shaped spiral structure to increase the contact area between the three and the heating fins 21.

[0050] During operation, the heat exchange effect on cold water and reaction gas can be improved by increasing the contact area between the through hole 14 and the heat absorbing plate 12, and increasing the contact area between the first spiral tube 22, the second spiral tube 23, the gas pipe 24 and the heating fins 21.

[0051] As an embodiment of the present invention, Figure 2 As shown, the heat absorbing plate 12 and the heating fins 21 are both made of aluminum alloy and have good heat absorbing performance.

[0052] During operation, by making the heat absorbing plate 12 and the heating fins 21 from aluminum alloy, the heat absorbing performance of both can be enhanced, thereby improving the heat exchange efficiency.

[0053] As an embodiment of the present invention, Figure 1 and Figure 3 As shown, a protective mechanism 3 is fixedly connected to the outer surface of the upper end of the base 1;

[0054] The protection mechanism 3 includes a protection plate 31 , and the protection plate 31 is fixedly connected to the edge of the upper outer surface of the water tank 17 . The water tank 17 is filled with cold water.

[0055] During operation, since the heating fins 21 have good heat absorption performance, if the protective mechanism 3 is not provided for protection, it is easy for the human body to come into contact with the heating fins 21 and cause burns, thereby reducing the safety of the device. The present invention provides a protective mechanism 3 and a protective plate 31 on the outside of the heating fins 21 to prevent the human body from coming into contact with the heating fins 21 and causing burns, thereby increasing the safety of the device.

[0056] As an embodiment of the present invention, Figure 3 , Figure 6 and Figure 7 As shown, the interior of the protective plate 31 is filled with a water-absorbing sponge 32 , the lower end of the water-absorbing sponge 32 penetrates the water tank 17 and extends to the bottom end of the inner surface of the water tank 17 , and the outer surface of the protective plate 31 is provided with a plurality of first through grooves 33 .

[0057] During operation, the protective plate 31 can prevent the human body from coming into contact with the heating fins 21 and causing burns, but the protective plate 31 also hinders the heat dissipation of the heating fins 21, thereby affecting the cooling effect of the device. The present invention fills an absorbent sponge 32 inside the protective plate 31, and uses the absorbent sponge 32 to absorb cold water inside the water tank 17. The cold water absorbs the heat emitted by the heating fins 21, thereby evaporating and absorbing heat, taking away the heat, thereby further improving the cooling effect of the device.

[0058] As an embodiment of the present invention, Figure 1 and Figure 6 As shown, a dustproof net 34 is fixedly connected to the annular inner surface of the first through groove 33 to prevent the water-absorbing sponge 32 from being contaminated by dust.

[0059] During operation, dust is isolated by the dustproof net 34 , so that the overall cleanliness of the water-absorbing sponge 32 is maintained, thereby increasing the service life of the water-absorbing sponge 32 .

[0060] As an embodiment of the present invention, Figure 3 As shown, a water supply pipe 35 is fixedly connected to one side of the outer surface of the lower end of the water tank 17 , and a water level sensor 36 is provided on the annular inner surface of the water tank 17 .

[0061] During operation, since the water absorbed by the absorbent sponge 32 is continuously evaporated, it is necessary to continuously absorb cold water into the water tank 17, so it is necessary to continuously replenish water into the water tank 17. The present invention sets a water level sensor 36. When the cold water level inside the water tank 17 drops to a certain position, the water level sensor 36 sends an electrical signal to control the cold water to be automatically added to the water tank 17 from the water supply pipe 35. When the water level inside the water tank 17 rises to an appropriate position, the water level sensor 36 sends an electrical signal again to cut off the water supply, so as to achieve the purpose of automatic water addition without manual water addition.

[0062] As an embodiment of the present invention, Figure 3 , Figure 7 and Figure 8 As shown, the upper outer surface of the water tank 17 is located on the inner side of the protective plate 31 and is evenly fixedly connected to a plurality of electric telescopic rods 37, the upper outer surface of the electric telescopic rods 37 is fixedly connected to a lifting plate 38, the upper outer surface edge of the lifting plate 38 is fixedly connected to an insulating slide plate 39, the outer surface of the protective plate 31 is slidably connected to the insulating slide plate 39 at both ends, and the outer surface of the insulating slide plate 39 is provided with a plurality of second through grooves 310 near the first through groove 33.

[0063] During operation, the present invention sets a heat-insulating slide plate 39. When the temperature inside the reactor body 13 is low, the heating fins 21 need to be electrically heated, so that the heat of the heating fins 21 is transferred from the heat-absorbing plate 12 to the reactor body 13. When the temperature inside the reactor body 13 is increased and the reaction gas is preheated, the electric telescopic rod 37 can be started to extend, so that the electric telescopic rod 37 drives the lifting plate 38 and the heat-insulating slide plate 39 to move upward, so that the second through groove 310 and the first through groove 33 are intertwined with each other, thereby insulating the water-absorbing sponge 32 and preventing the water-absorbing sponge 32 from absorbing the heat generated by the heating fins 21, thereby affecting the heating effect of the heating fins 21 on the reactor body 13 and the reaction gas.

[0064] Method of use: The present invention is provided with a temperature control mechanism 2. When the temperature inside the reactor body 13 is too high and needs to be cooled, cold water is introduced into the water inlet pipe 15. The cold water enters the through hole 14 from the water inlet pipe 15 and circulates to absorb the heat inside the heat absorbing plate 12, and then flows out from the water outlet pipe 16. At the same time, cold water is introduced into the water inlet ends of the first spiral tube 22 and the second spiral tube 23. The cold water circulates along the first spiral tube 22 and the second spiral tube 23, absorbs the heat inside the heating fin 21, and finally flows out from the first spiral tube 22 and the second spiral tube 23. The water outlet ends of the first spiral tube 22 and the second spiral tube 23 are discharged, so as to achieve the purpose of heat exchange with the heat generated inside the reactor body 13, thereby achieving the effect of cooling. If the temperature inside the reactor body 13 is low, the water supply operation of the first spiral tube 22, the second spiral tube 23 and the water inlet pipe 15 can be stopped, and the heating fins 21 are powered on and heated at the same time, so that the heat of the heating fins 21 is transferred from the heat absorbing plate 12 to the reactor body 13, and the reactor body 13 is heated. By setting the gas pipe 2 4, and cooperate with the heating fins 21. Before the reaction gas is introduced into the reactor body 13, the heating fins 21 are first powered on for heating, and then the reaction gas is introduced into the gas delivery pipe 24 from the gas inlet end. The reaction gas flows along the gas delivery pipe 24 and absorbs the heat generated by the heating fins 21, thereby achieving the purpose of preheating. The heated reaction gas finally flows into the reactor body 13. By filling the protective plate 31 with a water-absorbing sponge 32, the water-absorbing sponge 32 is used to absorb the cold water in the water tank 17. The cold water absorbs the heat emitted by the heating fins 21, thereby evaporating and absorbing heat, taking away the heat, and further improving the cooling effect of the device. When the heating fins 21 are powered on for heating, the electric telescopic rod 37 can be started to extend, so that the electric telescopic rod 37 drives the lifting plate 38 and the heat-insulating slide plate 39 to move upward, so that the second through groove 310 and the first through groove 33 are intertwined with each other, thereby insulating the water-absorbing sponge 32 and preventing the water-absorbing sponge 32 from absorbing the heat generated by the heating fins 21.

[0065] The electrical components appearing in this article are all connected to the external main controller and 220V AC power through a transformer, and the main controller can be a conventional known device that controls a computer, etc. The product model provided by the present invention is only used for the technical solution according to the structural characteristics of the product. The product will be adjusted and modified after purchase to make it more matching and consistent with the technical solution of the present invention. It is a technical solution for the best application of the technical solution. The model of its product can be replaced and modified according to the required technical parameters, which is well known to technical personnel in this field. Therefore, technical personnel in this field can clearly obtain the corresponding use effect through the technical solution provided by the present invention.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A Fischer-Tropsch synthesis slurry bed reactor with a shell-and-tube heat exchanger, comprising a base (1), characterized in that: The upper outer surface of the base (1) is fixedly connected to a water tank (17), the upper outer surface of the water tank (17) is fixedly connected to a fixed bottom plate (11), the upper outer surface of the fixed bottom plate (11) is fixedly connected to a heat absorbing plate (12), a through hole (14) is provided inside the heat absorbing plate (12), one end of the through hole (14) is fixedly connected to a water inlet pipe (15), the other end of the through hole (14) is fixedly connected to a water outlet pipe (16), the annular inner surface of the heat absorbing plate (12) is fixedly connected to a reactor body (13), and the annular outer surface of the heat absorbing plate (12) is fixedly connected to a temperature control mechanism (2); The inner diameter of the through hole (14) is the same as the inner diameter of the water inlet pipe (15) and the water outlet pipe (16); the temperature control mechanism (2) comprises a heating fin (21), a first spiral tube (22) and a second spiral tube (23); a plurality of the heating fins (21) are fixedly connected to the annular outer surface of the heat absorbing plate (12); the first spiral tube (22) is connected through the inner side of the heating fin (21) close to the heat absorbing plate (12); the second spiral tube (23) is connected through the inner side of the heating fin (21) close to the outer side of the first spiral tube (22); one end of the first spiral tube (22) and the second spiral tube (23) are both water inlet ends, and the other ends of both are water outlet ends; An air delivery pipe (24) is connected to and penetrates the interior of the heating fin (21) near the outside of the second spiral tube (23); one end of the air delivery pipe (24) is fixedly connected to the center of the upper outer surface of the reactor body (13), and the other end is an air inlet end; The through hole (14) is designed in an annular spiral structure, and the first spiral tube (22), the second spiral tube (23) and the air delivery pipe (24) are all designed in a U-shaped spiral structure, so as to increase the contact area between the three and the heating fin (21); The heat absorbing plate (12) and the heating fins (21) are both made of aluminum alloy; A protective mechanism (3) is fixedly connected to the outer surface of the upper end of the base (1); The protection mechanism (3) comprises a protection plate (31), wherein the protection plate (31) is fixedly connected to the edge of the upper outer surface of the water tank (17), and the interior of the water tank (17) is filled with cold water; The interior of the protective plate (31) is filled with a water-absorbing sponge (32); the lower ends of the protective plate (31) and the water-absorbing sponge (32) penetrate the upper surface of the water tank (17) and extend to the bottom end of the inner surface of the water tank (17); the outer surface of the protective plate (31) is provided with a plurality of first through grooves (33); and the fixed bottom plate (11) is fixedly connected to a position on the upper outer surface of the water tank (17) close to the inner side of the protective plate (31); A dustproof net (34) is fixedly connected to the annular inner surface of the first through groove (33) to prevent the water-absorbing sponge (32) from being contaminated by dust; A water supply pipe (35) is fixedly connected to one side of the outer surface of the lower end of the water tank (17), and a water level sensor (36) is provided on the annular inner surface of the water tank (17); The upper outer surface of the water tank (17) is evenly and fixedly connected to a plurality of electric telescopic rods (37) at a position located inside the protective plate (31); the upper outer surface of the electric telescopic rods (37) is fixedly connected to a lifting plate (38); the upper outer surface edge of the lifting plate (38) is fixedly connected to a heat insulating slide plate (39); both ends of the outer surface of the protective plate (31) are slidably connected to the heat insulating slide plate (39); and the outer surface of the heat insulating slide plate (39) is provided with a plurality of second through grooves (310) at a position close to the first through groove (33).

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