Synthetic reaction device

Abstract

The utility model provides a synthetic reaction device, and relates to the technical field of chemical production equipment, the synthetic reaction device comprises a reactor, a primary heat exchange assembly, a cyclone separation assembly and a secondary heat exchange assembly; the first-stage heat exchange assembly is provided with a first-stage cooling pipeline; the second-stage heat exchange assembly is provided with a second-stage cooling pipeline; the reactor is communicated to an inlet of the first-stage cooling pipeline; an outlet of the first-stage cooling pipeline is communicated with an inlet of the cyclone separation assembly; an outlet of the cyclone separation assembly is communicated with an inlet of the secondary cooling pipeline; products of the reactor enter the first-stage cooling pipeline, then are subjected to first-stage cooling and enter the cyclone separation assembly to be filtered, and the filtered products enter the second-stage cooling pipeline and then are subjected to second-stage cooling. When entering the cyclone separation assembly, the product can still keep higher temperature, is lower in viscosity and is difficult to adhere to the cyclone separation assembly, so that the failure rate of the cyclone separation device is reduced.

Description

Technical Field

[0001] This application relates to the technical field of chemical production equipment, and particularly to a synthesis reaction device. Background Art

[0002] In the polysilicon production process, the synthesis reaction device is equipment that performs a series of operations such as fluidized bed reaction, cooling, and filtration on the heated reaction raw materials. Finally, the obtained liquid chlorosilane enters the quench tower for further cooling.

[0003] In the related art, the synthesis reaction device generally includes a reactor, a circulating heat exchange component, and a cyclone separation component. In the specific production process, the product generated by the reaction of the reaction raw materials in the reactor will be heat-exchanged and cooled via the circulating heat exchange component, and then the impurities will be filtered by the cyclone separation component. Finally, the filtered product at a lower temperature will be introduced into the quench tower, and the quench tower will rapidly cool the product.

[0004] However, in the related art, the viscosity of the product after cooling is relatively high, and it is easy to adhere to the filter element of the cyclone separation component, resulting in an increase in the pressure difference before and after the filter element. It is difficult to backflush and remove impurities such as silicon powder in the cyclone separation component, and it will increase the failure rate of the cyclone separation component. Summary of the Utility Model

[0005] In view of the above problems, the embodiments of this application provide a synthesis reaction device, aiming to solve the problem that the viscosity of the product is relatively high after cooling in the related art, and it adheres to the surface of the filter element of the cyclone separation component, resulting in a decrease in the working efficiency of the cyclone separation component.

[0006] To achieve the above object, the embodiments of this application provide the following technical solutions:

[0007] The embodiments of this application provide a synthesis reaction device, including: a reactor, a primary heat exchange component, a cyclone separation component, and a secondary heat exchange component; the primary heat exchange component has a primary cooling pipeline; the secondary heat exchange component has a secondary cooling pipeline; the reactor has a reaction chamber, the outlet of the reaction chamber is communicated with the inlet of the primary cooling pipeline, the outlet of the primary cooling pipeline is communicated with the inlet of the cyclone separation component; the outlet of the cyclone separation component is communicated with the inlet of the secondary cooling pipeline; the primary cooling pipeline is configured to perform primary cooling on the product obtained from the reaction in the reactor, the cyclone separation component is configured to filter impurities from the product after primary cooling and obtain the filtered product, and the secondary cooling pipeline is configured to perform secondary cooling on the filtered product.

[0008] The synthesis reaction device provided by the embodiments of the present application is provided with a primary heat exchange component and a secondary heat exchange component before and after the cyclone separation component respectively, and primary cooling and secondary cooling are carried out in the primary heat exchange component and the secondary heat exchange component respectively. When the product enters the cyclone separation component, it can still maintain a relatively high temperature. Furthermore, the viscosity of the product when it enters the cyclone separation component is relatively low and it is difficult to adhere to the cyclone separation component, ensuring the smoothness of the filtration of the cyclone separation component, improving the filtration efficiency, and at the same time reducing the failure rate of the cyclone separation device.

[0009] In some embodiments, the primary heat exchange component includes a primary heat absorption member, and the secondary heat exchange component includes a secondary heat absorption member; the primary heat absorption member is in contact with the outer wall of the primary cooling pipe and is configured to absorb the heat of the product in the primary cooling pipe; the secondary heat absorption member is in contact with the outer wall of the secondary cooling pipe and is configured to absorb the heat of the filtered product in the secondary cooling pipe.

[0010] With such an arrangement, the primary heat absorption member and the secondary heat absorption member are respectively in contact with the outer walls of the primary cooling pipe and the secondary cooling pipe, and thus can effectively absorb the heat of the product in the primary cooling pipe and the secondary cooling pipe to achieve two-stage cooling of the product.

[0011] In some embodiments, the primary heat absorption member includes a primary heat absorption pipe; the secondary heat absorption member includes a secondary heat absorption pipe; the primary heat absorption pipe is configured to introduce a heat absorption fluid and absorb the heat of the product in the primary cooling pipe; the secondary heat absorption pipe is configured to introduce a heat absorption fluid and absorb the heat of the filtered product in the secondary cooling pipe.

[0012] With such an arrangement, the primary heat absorption pipe and the secondary heat absorption pipe can introduce a heat absorption fluid, and the flowing heat absorption fluid can absorb the heat of the product. The flowing heat absorption fluid can absorb the heat of the product more quickly, thereby achieving an improvement in the cooling efficiency.

[0013] In some embodiments, the synthesis reaction device further includes a heat transfer component; the heat transfer component includes: a first heat transfer pipe and a second heat transfer pipe; the first heat transfer pipe and the second heat transfer pipe are respectively connected to the outer wall of the reactor and are configured to transfer heat to the reactor; one end of the first heat transfer pipe is communicated with the outlet of the primary heat absorption pipe, and one end of the second heat transfer pipe is communicated with the outlet of the secondary heat absorption pipe.

[0014] With such an arrangement, the first heat transfer pipe and the second heat transfer pipe can respectively receive the heat-absorbing fluid used to absorb the heat of the product from the primary heat-absorbing pipe and the secondary heat-absorbing pipe, and transfer the heat in the heat-absorbing fluid to the outer wall of the reactor, and then transfer the heat to the reaction raw materials still undergoing reaction in the reactor, so as to realize the recovery and utilization of heat and save the energy required for the reactor's own heating.

[0015] In some embodiments, the heat transfer assembly further includes: a heat conducting member; the heat conducting member is disposed between the reactor and the first heat transfer pipe and the second heat transfer pipe; the heat conducting member surrounds the outer wall of the reactor, and the heat conducting member is in direct contact with the outer wall of the reactor, the outer wall of the first heat transfer pipe, and the outer wall of the second heat transfer pipe.

[0016] With such an arrangement, the heat conducting member can absorb the heat of the heat-absorbing fluid in the first heat transfer pipe and the second heat transfer pipe, and uniformly transfer the heat to the outer wall of the reactor, realizing the uniform and sufficient recovery and utilization of heat by the reactor.

[0017] In some embodiments, the heat conducting member is a heat conducting sleeve; the heat conducting sleeve is sleeved on the outside of the reactor, and the first heat transfer pipe and the second heat transfer pipe are wound around the outside of the heat conducting sleeve.

[0018] With such an arrangement, the heat conducting sleeve can transfer the heat to each position on the outer wall of the reactor, uniformly disperse the heat in the reactor, so as to realize the full absorption of heat by the reaction raw materials inside the reactor and improve the stability of the reaction.

[0019] In some embodiments, a heat absorption portion protrudes from the outer wall of the reactor, and a heat conducting groove is formed on the heat conducting member; the heat absorption member is connected to the heat conducting groove in a fitting manner; alternatively, a heat absorption groove is recessed on the outer wall of the reactor, and a heat conducting portion protrudes from the heat conducting member; the heat absorption groove is connected to the heat conducting portion in a fitting manner.

[0020] With such an arrangement, the heat absorption portion and the heat conducting groove, or the heat absorption groove and the heat conducting portion are arranged in a fitting connection manner. While ensuring the structural stability, the heat absorption portion or the heat conducting portion effectively increases the heat transfer area, and thus the heat can be transferred from the heat conducting member to the reactor more quickly, improving the efficiency of heat recovery and utilization.

[0021] In some embodiments, the primary heat exchange assembly includes: a first circulation heat exchanger, a transfer member, and a second circulation heat exchanger; the first circulation heat exchanger has a first pipe; the second circulation heat exchanger has a second pipe; the first pipe, the transfer member, and the second pipe are sequentially connected to form the primary cooling pipe; the transfer member includes a transfer inlet, a first transfer outlet, and a second transfer outlet; one end of the first pipe is connected to the outlet of the reactor, and the other end of the first pipe is connected to the transfer inlet of the transfer member; the first transfer outlet is connected to the inlet of the cyclone separation assembly; both ends of the second pipe are respectively connected to the second transfer outlet and the inlet of the cyclone separation assembly; the transfer inlet is configured to be connected to one of the first transfer outlet and the second transfer outlet.

[0022] With such an arrangement, the length of the heat exchange pipe through which the product passes before entering the cyclone separation assembly can be controlled by the transfer member. The transfer member can enable the product to pass only through the first pipe or sequentially through the first pipe and the second pipe, controlling the amount of heat absorbed by the product before entering the cyclone separation assembly, and further controlling the temperature of the product before entering the cyclone separation assembly, so as to achieve more effective protection of the cyclone separation assembly.

[0023] In some embodiments, the inner wall surface area of the first pipe is smaller than the inner wall surface area of the second pipe.

[0024] With such an arrangement, the amount of heat absorbed by the product inside the first pipe is less than the amount of heat absorbed by the product inside the second pipe. Furthermore, when it is necessary for the product to enter the cyclone separation assembly at a higher temperature, less heat can be absorbed by the product through the first pipe, so that the product has a higher temperature.

[0025] In some embodiments, the synthesis reaction device further includes: a connecting pipe and a heat insulation layer; one end of the connecting pipe is connected to the outlet of the reactor, and the other end of the connecting pipe is connected to the inlet of the primary cooling pipe; the heat insulation layer is disposed around the outer wall of the connecting pipe.

[0026] With such an arrangement, the connecting pipe is surrounded by a heat insulation layer, which can prevent the heat of the product from dissipating into the air when passing through the connecting pipe, thus avoiding waste of heat when heat recovery is required.

[0027] In addition to the technical problems solved by the embodiments of the present application described above, the technical features constituting the technical solutions, and the beneficial effects brought by these technical features of the technical solutions, other technical problems that can be solved by the synthesis reaction device provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific implementation manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0029] Figure 1 It is a schematic structural diagram of the synthesis reaction device provided by the embodiment of the present application;

[0030] Figure 2 It is a schematic structural diagram of the disassembled synthesis reaction device provided by the embodiment of the present application;

[0031] Figure 3 It is a schematic connection diagram of the heat conducting member and the reactor in the synthesis reaction device provided by the embodiment of the present application.

[0032] Reference numerals:

[0033] 100 - Synthesis reaction device;

[0034] 110 - Reactor; 111 - Heat absorption part; 112 - Heat absorption tank;

[0035] 120 - Primary heat exchange component; 121 - Primary cooling pipeline; 122 - Primary heat absorption member; 1221 - Primary heat absorption pipeline; 123 - First circulation heat exchanger; 1231 - First pipeline; 124 - Adapter; 1241 - Adapter inlet; 1242 - First adapter outlet; 1243 - Second adapter outlet; 125 - Second circulation heat exchanger; 1251 - Second pipeline;

[0036] 130 - Cyclone separation component;

[0037] 140 - Secondary heat exchange component; 141 - Secondary cooling pipeline; 142 - Secondary heat absorption member; 1421 - Secondary heat absorption pipeline;

[0038] 150 - Heat transfer component; 151 - First heat transfer pipeline; 152 - Second heat transfer pipeline; 153 - Heat conducting member; 1531 - Heat conducting sleeve; 154 - Heat conducting groove; 155 - Heat conducting part.

[0039] 160 - Connecting pipe;

[0040] 170 - Thermal insulation layer. Detailed implementation manners

[0041] In the related art, a synthesis reaction device for producing polysilicon generally includes a reactor, a circulating heat exchange component, and a cyclone separation component. In a specific production process, the reactor will heat the reaction raw materials inside it. Subsequently, the liquid product generated by the reaction of the reaction raw materials will be introduced into the circulating heat exchange component, and heat exchange and cooling will be carried out through the circulating heat exchange component to reduce the temperature to a temperature value at which the quench tower can perform quenching. Subsequently, the cyclone separation component filters out impurities, and finally the filtered product at a lower temperature is introduced into the quench tower, and the quench tower quickly cools the product. However, the viscosity of the product after cooling is relatively high. If the product after cooling is directly introduced into the cyclone separation component, then the molten product with high viscosity will adhere to the filter element of the cyclone separation component, resulting in an increase in the pressure difference before and after the filter element, making it difficult to backflush and remove impurities such as silicon powder in the cyclone separation component, and increasing the failure rate of the cyclone separation component.

[0042] To solve the above problems, the present application provides a synthesis reaction device. In this synthesis reaction device, by respectively arranging a primary heat exchange component and a secondary heat exchange component before and after the cyclone separation component, and setting the first preset temperature after heat exchange of the primary heat exchange component to be higher than the second preset temperature after heat exchange of the secondary heat exchange component, the product can still maintain a relatively high temperature when entering the cyclone separation component. Furthermore, the viscosity of the product when entering the cyclone separation component is relatively low, reducing the probability of adhesion in the cyclone separation component, ensuring the filtration smoothness of the cyclone separation component, improving the filtration efficiency, and at the same time reducing the failure rate of the cyclone separation device. At the same time, by using the secondary heat exchange component to perform secondary cooling on the filtered product, the temperature of the product can be further reduced to a lower level, thereby reducing the spraying amount of the quench tower when cooling the product and achieving the effect of reducing the operating load of the quench tower.

[0043] In order to make the above objects, features, and advantages of the embodiments of the present application more obvious and understandable, the following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0044] Please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic structural diagram of the synthesis reaction device 100 provided by the embodiments of the present application, Figure 2 and Figure 1 and Figure 2As shown in the figure, an embodiment of the present application provides a synthesis reaction device 100, including: a reactor 110, a primary heat exchange component 120, a cyclone separation component 130, and a secondary heat exchange component 140; the primary heat exchange component 120 has a primary cooling pipeline 121; the secondary heat exchange component 140 has a secondary cooling pipeline 141; the outlet of the reactor 110 is communicated with the inlet of the primary cooling pipeline 121, and the outlet of the primary cooling pipeline 121 is communicated with the inlet of the cyclone separation component 130; the outlet of the cyclone separation component 130 is communicated with the inlet of the secondary cooling pipeline 141; the primary cooling pipeline 121 is configured to perform primary cooling on the product obtained from the reaction in the reactor 110, the cyclone separation component 130 is configured to filter impurities from the product after primary cooling and obtain a filtered product, and the secondary cooling pipeline 141 is configured to perform secondary cooling on the filtered product. During specific operation, the product generated inside the reactor 110 enters the primary cooling pipeline 121 and is cooled to a first preset temperature inside the primary cooling pipeline 121; the product at the first preset temperature enters the cyclone separation component 130 and impurities are filtered inside the cyclone separation component 130 to generate a filtered product; after the filtered product enters the secondary cooling pipeline 141, it is cooled to be less than or equal to a second preset temperature inside the secondary cooling pipeline 141. Among them, the first preset temperature is greater than the second preset temperature.

[0045] In an embodiment of the present application, the reactor 110 has a reaction chamber inside. The reaction chamber has a certain volume and can accommodate the reaction raw materials required for production. Moreover, the reactor 110 also has a heater that can heat the inside of the reaction chamber to enable the reaction raw materials to react (such as a fluidized bed reaction) and finally generate a product in a molten state with a high temperature. The outlet and inlet of the reactor 110 are both communicated with the reaction chamber. The inlet of the reactor 110 is the opening for introducing the reaction raw materials, and the outlet of the reactor 110 is the opening through which the molten product flows out. Since the outlet of the reactor 110 is communicated with the primary heat exchange component 120, the product can directly flow into the primary heat exchange component 120 for heat exchange and cooling.

[0046] The primary cooling pipeline 121 inside the primary heat exchange component 120 has openings at both ends. The inlet of the primary cooling pipeline 121 is the opening for receiving the product, and the outlet of the primary cooling pipeline 121 is the opening for outputting the product that has undergone primary heat exchange and cooling to the cyclone separation component 130. Inside or outside the primary cooling pipeline 121, there is a cooling structure, which can be an externally electrically driven cooling device or a structure containing heat-absorbing substances such as coolant and heat-absorbing solids for heat absorption. When the product flows through the primary cooling pipeline 121, it will be cooled by the cooling structure, and its heat will be absorbed by the cooling structure. Furthermore, the temperature of the product is reduced to the first preset temperature. Among them, the first preset temperature is higher than the temperature that the product needs to have before entering the quench tower, and the first preset temperature can be adjusted by setting the heat absorption efficiency of the cooling structure or the length and inner wall surface area of the primary cooling pipeline 121. In the specific production process, the inner wall surface area of the primary cooling pipeline 121 can be set to be smaller than the inner wall surface area of the existing heat exchange component, so as to ensure that the cooling effect of the primary cooling pipeline 121 is weaker than that of the existing heat exchange component and realize that the first preset temperature is at a relatively high level.

[0047] When the product undergoes primary heat absorption and cooling inside the primary cooling pipeline 121 and reaches the first preset temperature, due to the inverse relationship between the viscosity and temperature of the product, the viscosity of the product is still at a relatively low level. At this time, the product flows from the outlet of the primary cooling pipeline 121 into the inlet of the cyclone separation component 130. Inside the cyclone separation component 130, there is a filter pipeline, and inside the filter pipeline, there is a blowing member and a filter element. When the product flows into the inlet of the cyclone separation component 130, it flows into the filter pipeline and will flow through the filter element, being filtered by the filter element to remove large-particle impurities. At the same time, the blowing member will blow back the product inside the filter pipeline to remove lighter small-particle impurities in the product, such as silicon powder. Since the viscosity of the product is low, compared with the situation in the prior art where the product with a higher viscosity adheres to the surface of the filter element, in the synthesis reaction device 100 provided by the embodiment of the present application, the product can still maintain a relatively high temperature when entering the cyclone separation component 130, so the viscosity is low and it is difficult to adhere to the cyclone separation component 130, ensuring the filtering smoothness of the cyclone separation component 130, improving the filtering efficiency, and also ensuring that there will be no excessive pressure difference on both sides of the filter element due to adhesion and blockage, ensuring the smooth blowing back of the blowing member, and thus ensuring the normal operation of the cyclone separation component 130.

[0048] After being filtered by the cyclone separation device, the product will flow into the secondary cooling pipeline 141 of the secondary heat exchange component 140. The two ends of the secondary cooling pipeline 141 are respectively communicated with the outlet of the filtering pipeline in the cyclone separation component 130 and the inlet of the quench tower. Similar to the primary cooling pipeline 121, the interior or exterior of the secondary cooling pipeline 141 also has a cooling structure, which can be an externally electrically driven cooling device or a structure containing heat-absorbing substances such as coolant and heat-absorbing solids to absorb heat. When the product flows through the secondary cooling pipeline 141, it will be secondarily cooled by the cooling structure, and its heat will be continuously absorbed by the cooling structure. Furthermore, the temperature of the product is reduced to the second preset temperature or a temperature lower than the second preset temperature. After flowing through the secondary cooling pipeline 141, the product will flow into the quench tower from the outlet of the secondary cooling pipeline 141 and will finally be cooled into polysilicon inside the quench tower. Among them, the second preset temperature is less than or equal to the temperature that the product needs to have before entering the quench tower, and the second preset temperature can be adjusted by setting the heat absorption efficiency of the cooling structure or the length and inner wall surface area of the primary cooling pipeline 121. Through the two-stage cooling of the primary heat exchange component 120 and the secondary heat exchange component 140, while ensuring a lower temperature of the product finally entering the quench tower, the failure rate of the cyclone separation component 130 is also reduced.

[0049] In some embodiments, as Figure 1 and Figure 2 shown, the primary heat exchange component 120 further has a primary heat-absorbing member 122, and the secondary heat exchange component 140 further has a secondary heat-absorbing member 142; the primary heat-absorbing member 122 is in contact with the outer wall of the primary cooling pipeline 121 and is configured to absorb the heat of the product in the primary cooling pipeline 121; the secondary heat-absorbing member 142 is in contact with the outer wall of the secondary cooling pipeline 141 and is configured to absorb the heat of the filtered product in the secondary cooling pipeline 141.

[0050] In the embodiments of the present application, the primary heat-absorbing member 122 and the secondary heat-absorbing member 142 are respectively in contact with the outer walls of the primary cooling pipeline 121 and the secondary cooling pipeline 141. Exemplarily, the primary heat-absorbing member 122 and the secondary heat-absorbing member 142 can be solid heat sinks, and the heat sinks are in contact with the outer wall of the primary cooling pipeline 121 or the secondary cooling pipeline 141, and can directly absorb the heat of the product; or, the primary heat-absorbing member 122 and the secondary heat-absorbing member 142 can also be heat dissipation containers with a certain volume, and the heat dissipation containers surround the outer walls of the primary cooling pipeline 121 or the secondary cooling pipeline 141, and coolant can be introduced into the interior to absorb the heat of the product flowing through the primary cooling pipeline 121 or the secondary cooling pipeline 141. Furthermore, the primary heat-absorbing member 122 and the secondary heat-absorbing member 142 can respectively effectively absorb the heat of the product in the primary cooling pipeline 121 and the secondary cooling pipeline 141 to achieve two-stage cooling of the product.

[0051] In some embodiments, such as Figure 1 and Figure 2 shown, the primary heat absorption member 122 includes a primary heat absorption pipeline 1221; the secondary heat absorption member 142 includes a secondary heat absorption pipeline 1421; the primary heat absorption pipeline 1221 is configured to introduce a heat absorption fluid and absorb the heat of the product in the primary cooling pipeline 121; the secondary heat absorption pipeline 1421 is configured to introduce a heat absorption fluid and absorb the heat of the filtered product in the secondary cooling pipeline 141.

[0052] In the embodiments of the present application, the primary heat absorption pipeline 1221 and the secondary heat absorption pipeline 1421 can be respectively sleeved outside the primary cooling pipeline 121 and the secondary cooling pipeline 141, and there are gaps between the inner walls of the primary heat absorption pipeline 1221 and the secondary heat absorption pipeline 1421 and the outer walls of the primary cooling pipeline 121 and the secondary cooling pipeline 141 respectively, so as to introduce a heat absorption fluid into the gaps and utilize the flowing heat absorption fluid to absorb the heat of the product. Alternatively, the primary heat absorption pipeline 1221 and the secondary heat absorption pipeline 1421 can be respectively attached to the primary cooling pipeline 121 and the secondary cooling pipeline 141, that is, the primary heat absorption pipeline 1221 is attached to the outer wall of the primary cooling pipeline 121, and the secondary heat absorption pipeline 1421 is attached to the outer wall of the secondary cooling pipeline 141. With such a setting, the primary heat absorption pipeline 1221 and the secondary heat absorption pipeline 1421 can introduce a heat absorption fluid, and the heat absorption fluid flowing inside the primary heat absorption pipeline 1221 and the secondary heat absorption pipeline 1421 can absorb the heat of the product. The flowing heat absorption fluid can absorb the heat of the product more quickly, thereby improving the cooling efficiency.

[0053] In addition, different settings can also be made according to the different heat absorption fluids introduced. Exemplarily, flowing reaction raw materials can be introduced into one end of the primary heat absorption pipeline 1221 and the secondary heat absorption pipeline 1421, and one end of the primary heat absorption pipeline 1221 and the secondary heat absorption pipeline 1421 is connected to the inlet of the reactor 110. With such a setting, before the new reaction raw materials enter the reactor 110, they can absorb heat in advance from the pre-produced products, and after entering the reactor 110, they can react without excessive heating, which plays a role in improving the reaction efficiency and saving heating energy. Or, a flowing heat absorption liquid, such as alkyl biphenyl type heat transfer oil, can be introduced into the primary heat absorption pipeline 1221 and the secondary heat absorption pipeline 1421, and one end of the primary heat absorption pipeline 1221 and one end of the secondary heat absorption pipeline 1421 are connected to a storage container. After the heat absorption liquid is cooled in the storage container, it is introduced into the primary heat absorption pipeline 1221 and the secondary heat absorption pipeline 1421 again for heat exchange with the product.

[0054] In some embodiments, such as Figure 1 and Figure 2As shown, the synthesis reaction device 100 further includes: a heat transfer component 150; the heat transfer component 150 includes: a first heat transfer pipe 151 and a second heat transfer pipe 152; the first heat transfer pipe 151 and the second heat transfer pipe 152 are respectively connected to the outer wall of the reactor 110 and are configured to transfer heat to the reactor 110; one end of the first heat transfer pipe 151 communicates with the outlet of the primary endothermic pipe 1221, and one end of the second heat transfer pipe 152 communicates with the outlet of the secondary endothermic pipe 1421.

[0055] In the embodiments of the present application, the first heat transfer pipe 151 and the second heat transfer pipe 152 respectively receive the endothermic fluid from the primary endothermic pipe 1221 and the secondary endothermic pipe 1421. Exemplarily, the first heat transfer pipe 151 and the second heat transfer pipe 152 may be respectively spirally wound around the outer wall of the reactor 110 and transfer heat to the outer wall of the reactor 110 by fitting with the outer wall of the reactor 110, thereby transferring the heat in the endothermic fluid to the reaction raw materials that are still reacting in the reactor 110 to realize the recycling of the heat of the product and save the energy required for the reactor 110 to heat itself.

[0056] In some embodiments, as Figure 1 and Figure 2 shown, the heat transfer component 150 further includes: a heat conducting member 153; the heat conducting member 153 is disposed between the reactor 110 and the first heat transfer pipe 151 and the second heat transfer pipe 152; the heat conducting member 153 surrounds the outer wall of the reactor 110, and the heat conducting member 153 is in direct contact with the outer wall of the reactor 110, the outer wall of the first heat transfer pipe 151, and the outer wall of the second heat transfer pipe 152.

[0057] In the embodiments of the present application, the heat conducting member 153 surrounds the outer wall of the reactor 110 and has a large contact area with the reactor 110, and the heat conducting member 153 is in contact with the outer walls of the first heat transfer pipe 151 and the second heat transfer pipe 152. Furthermore, the heat conducting member 153 can absorb the heat from the endothermic fluid in the first heat transfer pipe 151 and the second heat transfer pipe 152 and evenly diffuse the heat to the part of the reactor 110 surrounded by the heat conducting member 153, thereby improving the uniformity of heat transfer and realizing the uniform and sufficient recycling of heat by the reactor 110.

[0058] In some embodiments, as Figure 1 shown, the heat conducting member 153 is a heat conducting sleeve 1531; the heat conducting sleeve 1531 is sleeved on the outside of the reactor 110 and is located between the first heat transfer pipe 151, the second heat transfer pipe 152 and the reactor 110.

[0059] In the embodiment of the present application, the heat-conducting sleeve 1531 is integrally sleeved on the outer side of the reactor 110 and covers the entire outer wall of the reactor 110. Furthermore, the heat-conducting sleeve 1531 can transfer heat to each position on the outer wall of the reactor 110, evenly disperse the heat in the reactor 110, so as to enable the reaction raw materials inside the reactor 110 to fully absorb the heat and improve the stability of the reaction.

[0060] In some embodiments, please refer to Figure 3 , Figure 3 which is a schematic connection diagram of the heat-conducting member 153 and the reactor 110 in the synthesis reaction device 100 provided by the embodiment of the present application. As Figure 3 shown, a heat absorption portion 111 is convexly provided on the outer wall of the reactor 110, and a heat-conducting groove 154 is formed on the heat-conducting member 153; the heat absorption member is spliced and connected with the heat-conducting groove 154; alternatively, a heat absorption groove 112 is concavely provided on the outer wall of the reactor 110, and a heat-conducting portion 155 is convexly provided on the heat-conducting member 153; the heat absorption groove 112 is spliced and connected with the heat-conducting portion 155.

[0061] In the embodiment of the present application, if it is the structure form of the heat absorption portion 111 and the heat-conducting groove 154, then the heat absorption portion 111 can be provided in multiple numbers, and the multiple heat absorption portions 111 are evenly and convexly distributed on the outer wall of the reactor 110, each heat-conducting groove 154 corresponds to one heat absorption portion 111, and the heat-conducting member 153 is connected to the outer wall of the reactor 110 through the clamping or plugging between the heat-conducting groove 154 and the heat absorption portion 111. If it is the structure form of the heat absorption groove 112 and the heat-conducting portion 155, then the heat absorption groove 112 can also be provided in multiple numbers, the multiple heat absorption grooves 112 are evenly and concavely formed on the outer wall of the reactor 110, each heat-conducting portion 155 corresponds to one heat absorption groove 112, and the heat-conducting member 153 is connected to the outer wall of the reactor 110 through the clamping or plugging between the heat-conducting portion 155 and the heat absorption groove 112. With such a setting, while ensuring the structural stability, the convexly provided heat absorption portion 111 or heat-conducting portion 155 effectively increases the contact area between the heat-conducting member 153 and the reactor 110, and thus the heat can be transferred from the heat-conducting member 153 to the reactor 110 more quickly, improving the efficiency of heat recovery and utilization.

[0062] In some embodiments, as Figure 1 and Figure 2As shown in the figure, the primary heat exchange assembly 120 includes: a first circulation heat exchanger 123, a transfer member 124, and a second circulation heat exchanger 125; the first circulation heat exchanger 123 has a first pipeline 1231; the second circulation heat exchanger 125 has a second pipeline 1251; the first pipeline 1231, the transfer member 124, and the second pipeline 1251 are connected in sequence to form a primary cooling pipeline 121; the transfer member 124 includes a transfer inlet 1241, a first transfer outlet 1242, and a second transfer outlet 1243; both ends of the first pipeline 1231 are respectively connected to the outlet of the reactor 110 and the transfer inlet 1241 of the transfer member 124; the first transfer outlet 1242 is connected to the inlet of the cyclone separation assembly 130; both ends of the second pipeline 1251 are respectively connected to the second transfer outlet 1243 and the inlet of the cyclone separation assembly 130; the transfer inlet 1241 is configured to be connected to one of the first transfer outlet 1242 and the second transfer outlet 1243.

[0063] In the embodiment of the present application, the first circulation heat exchanger 123 and the second circulation heat exchanger 125 can respectively and independently cool the product through the first pipeline 1231 and the second pipeline 1251, that is, both the first pipeline 1231 and the second pipeline 1251 have independent cooling structures. In the transfer member 124, there is a transfer pipeline, and the transfer pipeline has three openings, namely a transfer inlet 1241, a first transfer outlet 1242, and a second transfer outlet 1243. A steering valve is provided between the first transfer outlet 1242 and the second transfer outlet 1243. The steering valve is rotatably connected inside the transfer pipeline. By rotating the steering valve, the connection between the first transfer outlet 1242 and the transfer inlet 1241, or the connection between the second transfer outlet 1243 and the transfer inlet 1241 can be achieved. When the first transfer outlet 1242 and the transfer inlet 1241 are connected, the product can directly enter the cyclone separation assembly 130 after being cooled by the first pipeline 1231. At this time, the first preset temperature at which the product is located is a relatively high temperature value; when the second transfer outlet 1243 and the transfer inlet 1241 are connected, the product enters the cyclone separation assembly 130 only after being cooled by the first pipeline 1231 and the second pipeline 1251 in sequence. At this time, the first preset temperature at which the product is located is a relatively low temperature value. It can be seen that through the transfer member 124, the length of the heat exchange pipeline that the product passes through before entering the cyclone separation assembly 130 can be controlled. The transfer member 124 can enable the product to only pass through the first pipeline 1231, or pass through the first pipeline 1231 and the second pipeline 1251 in sequence, and control the amount of heat absorbed by the product before entering the cyclone separation assembly 130. Since different products have different first preset temperatures when reaching low viscosity, this setting method can control the temperature of different products before entering the cyclone separation assembly 130 and achieve more effective protection for the cyclone separation assembly 130.

[0064] In some embodiments, the inner wall surface area of the first pipe 1231 is smaller than that of the second pipe 1251.

[0065] In the embodiments of the present application, the inner diameters of the first pipe 1231 and the second pipe 1251 can be the same inner diameter, and this can be achieved by setting the length of the first pipe 1231 to be less than that of the second pipe 1251; alternatively, the inner diameters of the first pipe 1231 and the second pipe 1251 can be set such that the inner diameter of the first pipe 1231 is less than that of the second pipe 1251, and the length of the first pipe 1231 is less than that of the second pipe 1251. Furthermore, the heat absorbed by the product inside the first pipe 1231 is less than the heat absorbed by the product inside the second pipe 1251. Thus, when the product needs to enter the cyclone separation assembly 130 at a higher temperature, only the first pipe 1231 can absorb less heat from the product, enabling the product to have a relatively high temperature.

[0066] In some embodiments, as Figure 1 shown, the synthesis reaction device 100 further includes: a connecting pipe 160 and a heat insulation layer 170; both ends of the connecting pipe 160 are respectively communicated with the outlet of the reactor 110 and the inlet of the primary cooling pipe 121; the heat insulation layer 170 surrounds the outer wall of the connecting pipe 160.

[0067] In the embodiments of the present application, after the product flows out of the reactor 110, it enters the primary cooling pipe 121 through the connecting pipe 160. The connecting pipe 160 is surrounded by the heat insulation layer 170, which can prevent the heat of the product from dissipating into the air when passing through the connecting pipe 160, thus avoiding waste of heat when heat recovery is required and also preventing excessive heat from dissipating into the air and having an adverse effect on the heat exchange process.

[0068] It can be seen that for the synthesis reaction device provided by the embodiments of the present application, by respectively arranging a primary heat exchange assembly and a secondary heat exchange assembly before and after the cyclone separation assembly, and setting the first preset temperature after heat exchange of the primary heat exchange assembly to be higher than the second preset temperature after heat exchange of the secondary heat exchange assembly, the product can still maintain a relatively high temperature when entering the cyclone separation assembly. Furthermore, the viscosity of the product when entering the cyclone separation assembly is relatively low and it is difficult to adhere to the cyclone separation assembly, ensuring the smoothness of the filtration of the cyclone separation assembly, improving the filtration efficiency, and at the same time reducing the failure rate of the cyclone separation device.

[0069] The embodiments or implementation manners in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts among the various embodiments can be referred to each other.

[0070] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A synthesis reaction device, characterized in that: include: A reactor (110), a primary heat exchange component (120), a cyclone separation component (130) and a secondary heat exchange component (140); the primary heat exchange component (120) has a primary cooling pipeline (121); the secondary heat exchange component (140) has a secondary cooling pipeline (141); The reactor (110) has a reaction chamber, the outlet of the reaction chamber is connected to the inlet of the primary cooling pipe (121), the outlet of the primary cooling pipe (121) is connected to the inlet of the cyclone separation component (130); the outlet of the cyclone separation component (130) is connected to the inlet of the secondary cooling pipe (141); The primary cooling pipe (121) is configured to perform primary cooling on the product obtained by the reaction in the reactor (110), the cyclone separation component (130) is configured to filter impurities from the product after the primary cooling and obtain a filtered product, and the secondary cooling pipe (141) is configured to perform secondary cooling on the filtered product.

2. The synthesis reaction device according to claim 1, characterized in that: The primary heat exchange component (120) comprises a primary heat absorbing element (122), and the secondary heat exchange component (140) comprises a secondary heat absorbing element (142); the primary heat absorbing element (122) contacts the outer wall of the primary cooling pipe (121), and is configured to absorb the heat of the product in the primary cooling pipe (121); the secondary heat absorbing element (142) contacts the outer wall of the secondary cooling pipe (141), and is configured to absorb the heat of the filtered product in the secondary cooling pipe (141).

3. The synthesis reaction device according to claim 2, characterized in that: The primary heat absorbing element (122) comprises a primary heat absorbing pipe (1221); the secondary heat absorbing element (142) comprises a secondary heat absorbing pipe (1421); the primary heat absorbing pipe (1221) is configured to allow a heat absorbing fluid to pass through and absorb the heat of the product in the primary cooling pipe (121); the secondary heat absorbing pipe (1421) is configured to allow a heat absorbing fluid to pass through and absorb the heat of the filtered product in the secondary cooling pipe (141).

4. The synthesis reaction device according to claim 3, characterized in that: Also includes: A heat transfer component (150); the heat transfer component (150) comprises: a first heat transfer pipe (151) and a second heat transfer pipe (152); The first heat transfer pipe (151) and the second heat transfer pipe (152) are respectively connected to the outer wall of the reactor (110), and are configured to transfer heat to the reactor (110); one end of the first heat transfer pipe (151) is connected to the outlet of the first-level heat absorption pipe (1221), and one end of the second heat transfer pipe (152) is connected to the outlet of the second-level heat absorption pipe (1421).

5. The synthesis reaction device according to claim 4, characterized in that: The heat transfer component (150) further comprises a heat conductor (153); the heat conductor (153) is arranged between the reactor (110) and the first heat transfer pipe (151) and the second heat transfer pipe (152); the heat conductor (153) is arranged around the outer wall of the reactor (110), and the heat conductor (153) is in direct contact with the outer wall of the reactor (110), the outer wall of the first heat transfer pipe (151), and the outer wall of the second heat transfer pipe (152).

6. The synthesis reaction device according to claim 5, characterized in that: The heat-conducting member (153) is a heat-conducting sleeve (1531); the heat-conducting sleeve (1531) is sleeved on the outside of the reactor (110); the first heat transfer pipe (151) and the second heat transfer pipe (152) are wound around the outside of the heat-conducting sleeve (1531).

7. The synthesis reaction device according to claim 5 or 6, characterized in that: A heat absorbing portion (111) is protruding from the outer wall of the reactor (110), and a heat conducting groove (154) is provided on the heat conducting member (153); the heat absorbing member and the heat conducting groove (154) are spliced ​​and connected; or, A heat absorbing groove (112) is recessed on the outer wall of the reactor (110), and a heat conducting portion (155) is protrudingly provided on the heat conducting member (153); the heat absorbing groove (112) and the heat conducting portion (155) are spliced ​​and connected.

8. The synthesis reaction device according to any one of claims 1 to 6, characterized in that: The primary heat exchange assembly (120) comprises: a first circulation heat exchanger (123), an adapter (124) and a second circulation heat exchanger (125); the first circulation heat exchanger (123) has a first pipeline (1231); the second circulation heat exchanger (125) has a second pipeline (1251); the first pipeline (1231), the adapter (124) and the second pipeline (1251) are sequentially connected to form the primary cooling pipeline (121); The adapter (124) comprises a transfer inlet (1241), a first transfer outlet (1242) and a second transfer outlet (1243); one end of the first pipe (1231) is connected to the outlet of the reactor (110), and the other end of the first pipe (1231) is connected to the transfer inlet (1241) of the adapter (124); the first transfer outlet (1242) is connected to the inlet of the cyclone separation component (130); two ends of the second pipe (1251) are respectively connected to the second transfer outlet (1243) and the inlet of the cyclone separation component (130); the transfer inlet (1241) is configured to be connected to one of the first transfer outlet (1242) and the second transfer outlet (1243).

9. The synthesis reaction device according to claim 8, characterized in that: The inner wall surface area of ​​the first pipe (1231) is smaller than the inner wall surface area of ​​the second pipe (1251).

10. The synthesis reaction device according to any one of claims 1 to 6, characterized in that: Also includes: A connecting pipe (160) and a heat-insulating layer (170); one end of the connecting pipe (160) is connected to the outlet of the reactor (110), and the other end of the connecting pipe (160) is connected to the inlet of the primary cooling pipe (121); the heat-insulating layer (170) is surrounded by the outer wall of the connecting pipe (160).

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