Micro-channel reactor

Abstract

The utility model discloses a microchannel reactor which comprises a transverse main pipe body, end covers are fixed at the left end and the right end of the transverse main pipe body, a feeding connector is welded and fixed on the outer side wall of the middle of the end cover on the left side, and the feeding connector is communicated with a through hole in the middle of the end cover on the left side. A middle through hole of the right end cover is communicated with a discharging connector welded and fixed on the right side wall of the right end cover; an inner cavity of the transverse main pipe body is communicated with the two middle through holes; flange connecting end plates are fixedly welded to the left end and the right end of the transverse main pipe body, and a plurality of transverse through holes are formed in the flange connecting end plates. The partition plates and the spacer bushes arranged in the transverse main pipe body can prolong the flowing time of high-temperature liquid or high-temperature gas, improve heat exchange between the high-temperature liquid or the high-temperature gas and materials in the heat exchange pipes, improve the heat utilization rate and guarantee rapid and thorough reaction of the materials, and the outer heat preservation sleeve and the heat preservation layer have the heat preservation effect and improve the heat utilization rate.

Description

Technical fields:

[0001] This utility model relates to the field of chemical equipment technology, and more specifically to a microchannel reactor. Background technology:

[0002] Microchannel reactors are ideal equipment for the chemical industry to carry out mixing reactions in situations where multiple media need to be mixed and reacted, during pipeline transportation, and under high temperature and high pressure conditions. They have the characteristics of high-efficiency mixing, reduced operating costs, uniform reaction, and significant mixing effect. The equipment is small in size and can realize continuous processing.

[0003] In existing microchannel reactors, multiple heat exchange tubes are inserted inside the tube body. Heat exchange inlet and outlet pipes are connected to the left and right sides of the tube body. High-temperature liquid or gas is introduced through the heat exchange inlet pipe to exchange heat with the material in the heat exchange tube, so that the material reacts and is transported at high temperature. However, there are no components inside the tube body. The high-temperature liquid or gas enters from the heat exchange inlet pipe and immediately flows out from the heat exchange outlet pipe. Its residence time in the tube body is short and the heat exchange effect is limited.

[0004] Meanwhile, when the existing microchannel reactors are circulated with high-temperature liquid to exchange heat with the material in the material pipeline to make the material react and flow, it is necessary to ensure the heat preservation of the reactor. The existing microchannel reactors do not have external heat preservation structures, which results in a large heat loss and low heat utilization rate.

[0005] Meanwhile, when existing microchannel reactors are installed on the frame, their legs also transfer heat from the microchannel reactor, increasing heat loss. Utility Model Content:

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a microchannel reactor. The baffles and septa provided in its transverse main tube can increase the flow time of high-temperature liquids or high-temperature gases, improve the heat exchange with the materials in the heat exchange tube, improve the heat utilization rate, and ensure that the reaction of the materials is rapid and thorough. Moreover, its external insulation sleeve and insulation layer have a heat preservation effect, which improves its heat utilization rate.

[0007] The solution of this utility model to the aforementioned technical problem is:

[0008] A microchannel reactor includes a transverse main body, with end caps fixed at both ends of the transverse main body. A feed connector is welded and fixed to the outer wall of the middle part of the left end cap, and the feed connector communicates with the middle through hole of the left end cap. The middle through hole of the right end cap communicates with the discharge connector welded and fixed to the right side wall of the right end cap.

[0009] The inner cavity of the transverse main tube communicates with two central through holes;

[0010] The left and right ends of the transverse main body are welded and fixed with flange connection end plates, and multiple transverse through holes are formed on the flange connection end plates.

[0011] The inner wall of the transverse main body is provided with multiple partitions and spacers. The outer walls of the partitions and spacers are in close contact with the inner wall of the transverse main body. The left and right ends of the transverse main body are provided with long spacers. All the partitions and spacers in the middle are spaced apart. Each spacer is clamped between two partitions. The inner end of the long spacer is pressed against the outer wall edge of the corresponding partition. The outer end of the long spacer is pressed against the inner end face of the corresponding flange connection end plate. The outer wall of the long spacer is stuck on the inner wall of the left or right end of the transverse main body.

[0012] All partitions have multiple connecting through holes formed. The heat exchange tubes are inserted into the corresponding connecting through holes of all partitions. The outer side wall of the heat exchange tube is fitted onto the inner side wall of the corresponding connecting through hole. The heat exchange tubes are inserted into the corresponding transverse through holes of the two flange connecting end plates. The middle part of the heat exchange tube has multiple through-holes that run from left to right. The middle through hole of the end cap is connected to the corresponding end of the microchannel through hole of all heat exchange tubes.

[0013] Each partition has a flow hole formed in it. In every two adjacent partitions, the upper part of one partition has a flow hole formed in it, and the lower part of the other partition has a flow hole formed in it.

[0014] An outer insulation sleeve is fitted around the outer side of the transverse main body. The left and right ends of the outer insulation sleeve are welded and fixed to the inner end faces of the two flange connection end plates. The heat exchange liquid inlet connection pipe and the heat exchange liquid outlet connection pipe are welded and fixed to the top left and top right surfaces of the transverse main body, respectively, and communicate with the through holes on the top plate of the left and top plate of the transverse main body, respectively. The outer end of the heat exchange liquid outlet connection pipe extends out of the corresponding through hole on the top wall plate of the outer insulation sleeve. The top wall plates of the two long spacers are formed with first flow through holes, which communicate with and are opposite to the corresponding through holes of the transverse main body.

[0015] The outer insulation sleeve and the outer side wall of the transverse main body form a sleeve-shaped heat insulation cavity. The left and right sides of the outer side wall of the outer insulation sleeve are respectively welded and fixed with an air inlet pipe and an air outlet pipe. The air inlet pipe and the air outlet pipe communicate with the corresponding through holes formed on the outer side wall of the outer insulation sleeve, and the through holes communicate with the heat insulation cavity.

[0016] The outer end of the air inlet pipe is connected to the air outlet of the ventilator, the air inlet of the ventilator is connected to the air inlet control valve, and the outer end of the air outlet pipe is connected to the air outlet control valve.

[0017] The outer end faces of the two flange connection plates are each formed with a central groove. The connecting plate is nested in the corresponding central groove. The outer side wall of the connecting plate is pressed against the inner side wall of the central groove, and the inner end face of the connecting plate is pressed against the inner end face of the corresponding central groove. The end of the heat exchange tube extends out of the corresponding transverse through hole and is inserted into the corresponding through hole formed on the corresponding connecting plate and welded to fix it.

[0018] The outer end face of the flange connection end plate is formed with an annular groove, and the inner end face of the corresponding end cover is formed with an inner annular groove. The ceramic sealing ring is inserted into the corresponding annular groove and the inner annular groove. The outer end face of the ceramic sealing ring is pressed against the inner end face of the corresponding inner annular groove, and the inner end face of the ceramic sealing ring is pressed against the inner end face of the corresponding annular groove. There is a gap between the flange connection end plate and the corresponding end cover.

[0019] The outstanding effect of this utility model is:

[0020] Compared with existing technologies, its transverse main tube has baffles and sleeves that can increase the flow time of high-temperature liquids or gases, improve the heat exchange with the materials in the heat exchange tube, improve the heat utilization rate, and ensure that the material reaction is rapid and complete. In addition, its outer insulation sleeve and insulation layer have a heat preservation effect, improving its heat utilization rate. Moreover, it can achieve gas flow in the insulation cavity through the operation of a ventilator to achieve rapid cooling and meet different usage needs. Its lower support leg adopts a heat insulation structure with the outer insulation sleeve, which greatly reduces heat transfer and further improves the heat utilization rate. Attached image description:

[0021] Figure 1 This is a partial sectional view of the present invention;

[0022] Figure 2 yes Figure 1 A magnified view of a portion of the image;

[0023] Figure 3 yes Figure 1 A magnified view of another part. Detailed implementation method:

[0024] For example, see below. Figures 1 to 3 As shown, a microchannel reactor includes a transverse main body 10, with end caps 20 fixed at both ends of the transverse main body 10. A feed connector 21 is welded and fixed to the outer wall of the middle part of the left end cap 20, and the feed connector 21 communicates with the through hole in the middle of the left end cap 20. The through hole in the middle of the right end cap 20 communicates with the discharge connector 22 welded and fixed to the right side wall of the right end cap 20.

[0025] The inner cavity of the transverse main tube 10 is connected to the two central through holes;

[0026] Flange connection end plates 11 are welded and fixed to the left and right ends of the transverse main body 10. Multiple transverse through holes 12 are formed on the flange connection end plates 11. The edge of the flange connection end plate 11 and the edge of the corresponding end cover 20 are formed with corresponding connection through holes. The flange connection end plate 11 and the corresponding end cover 20 are fixedly connected by multiple connecting bolts.

[0027] The inner wall of the transverse main body 10 is provided with a plurality of partitions 13 and spacers 14. The outer walls of the partitions 13 and spacers 14 are closely attached to the inner wall of the transverse main body 10. The left and right ends of the transverse main body 10 are provided with long spacers 15. All the partitions 13 and spacers 14 in the middle are spaced apart. Each spacer 14 is clamped between two partitions 13. The inner end of the long spacer 15 is pressed against the edge of the outer wall of the corresponding partition 13. The outer end of the long spacer 15 is pressed against the inner end face of the corresponding flange connection end plate 11. The outer wall of the long spacer 15 is stuck on the inner wall of the left or right end of the transverse main body 10.

[0028] All partition plates 13 have multiple connecting through holes formed on them. Heat exchange tubes 17 are inserted into the corresponding connecting through holes of all partition plates 13. The outer side wall of heat exchange tubes 17 is locked onto the inner side wall of the corresponding connecting through hole. Heat exchange tubes 17 are inserted into the corresponding transverse through holes 12 of the two flange connecting end plates 11. Multiple microchannel through holes are formed in the middle of heat exchange tubes 17. The middle through hole of end cap 20 is connected to the corresponding end of the microchannel through hole of all heat exchange tubes 17.

[0029] Each partition 13 has a flow through hole 131 formed on it. In every two adjacent partitions 13, the upper part of one partition 13 has a flow through hole 131 formed on it, and the lower part of the other partition 13 has a flow through hole 131 formed on it.

[0030] Furthermore, an outer insulation sleeve 30 is fitted on the outer side of the transverse main body 10. The left and right ends of the outer insulation sleeve 30 are welded and fixed to the inner end faces of the two flange connection end plates 11. The heat exchange liquid inlet connection pipe 1 and the heat exchange liquid outlet connection pipe 2 are welded and fixed to the top left and top right surfaces of the transverse main body 10, respectively, and communicate with the through holes on the top left and top right surfaces of the transverse main body 10, respectively. The outer end of the heat exchange liquid outlet connection pipe 2 extends out of the corresponding through hole on the top wall of the outer insulation sleeve 30. The top wall of the two long spacers 15 is formed with a first flow through hole 4, which communicates with and is opposite to the corresponding through hole of the transverse main body 10.

[0031] The above structure allows materials to enter through the feed connector 21 on the left end cap 20 and then into all the heat exchange tubes 17. The middle of the heat exchange tubes 17 has multiple through-holes forming microchannels, which ensure uniform mixing of the materials. At the same time, the heat exchange liquid inlet connector 1 is connected to the air outlet or liquid outlet of the external high-temperature equipment, and the heat exchange liquid outlet connector 2 is connected to the air inlet or liquid inlet of the external downstream equipment (such as various waste heat utilization equipment or waste gas and wastewater filtration devices, which can use conventional components or structures available on the market, and will not be described in detail here). The high-temperature equipment can be existing high-temperature equipment such as high-temperature boiler systems, and will not be described in detail here.

[0032] High-temperature gas or liquid enters the transverse main body 10 from the heat exchange inlet connection pipe 1, where it exchanges heat with the material in the heat exchange pipe 17 to meet the heat energy required for the material reaction and ensure its normal and rapid reaction. Due to the setting of multiple baffles 13 and sleeves 14, the high-temperature gas or liquid in the transverse main body 10 can gradually pass through the baffles 13, increasing its flow time in the transverse main body 10 and improving heat utilization. Then, it flows out from the heat exchange outlet connection pipe 2 to the subsequent equipment, while the reacted material is discharged from the discharge connection head 22 to the subsequent material receiving equipment for further reaction or collection. This is the conventional method and will not be described in detail.

[0033] Furthermore, an insulation layer 5 is fixed to the outer wall of the outer insulation sleeve 30. The outer insulation sleeve 30 further improves the insulation effect of this embodiment and increases the utilization rate of thermal energy.

[0034] Furthermore, a sleeve-shaped heat insulation cavity 6 is formed between the outer heat insulation sleeve 30 and the outer side wall of the transverse main body 10. An air inlet pipe 7 and an air outlet pipe 8 are welded and fixed to the left and right sides of the outer side wall of the outer heat insulation sleeve 30, respectively. The air inlet pipe 7 and the air outlet pipe 8 communicate with corresponding through holes formed on the outer side wall of the outer heat insulation sleeve 30, and the through holes communicate with the heat insulation cavity 6.

[0035] Furthermore, the outer end of the air inlet pipe 7 is connected to the air outlet of the ventilator 40, the air inlet of the ventilator 40 is connected to the air inlet control valve 50, and the outer end of the air outlet pipe 8 is connected to the air outlet control valve 60.

[0036] In this embodiment, the exhaust control valve 60 and the intake control valve 50 need to be closed during use. The insulation effect of the transverse main pipe 10 is improved through the heat insulation cavity 6. When the temperature in the transverse main pipe 10 needs to be cooled down quickly, the exhaust control valve 60 and the intake control valve 50 can be opened and the ventilator 40 can be turned on, so that the external air can enter the heat insulation cavity 6 for flow, exchange heat with the transverse main pipe 10 and then be discharged, thereby rapidly cooling the transverse main pipe 10 and improving the cooling effect. In order to monitor its temperature at all times, a temperature sensor can be installed in the transverse main pipe 10. The outer connection part of the temperature sensor extends out of the outer insulation sleeve 30. It is a conventional connection and installation structure, which will not be described in detail here and is not shown in the attached drawings.

[0037] Furthermore, the outer end faces of the two flange connection end plates 11 are each formed with a central groove. The connecting plate 112 is nested in the corresponding central groove. The outer side wall of the connecting plate 112 is pressed against the inner side wall of the central groove, and the inner end face of the connecting plate 112 is pressed against the inner end face of the corresponding central groove. The end of the heat exchange tube 17 extends out of the corresponding transverse through hole 12 and is inserted into the corresponding through hole formed on the corresponding connecting plate 112 and welded and fixed.

[0038] Furthermore, the outer end face of the flange connecting end plate 11 is formed with an annular groove, and the inner end face of the corresponding end cover is formed with an inner annular groove. The ceramic sealing ring 9 is inserted into the corresponding annular groove and the inner annular groove. The outer end face of the ceramic sealing ring 9 is pressed against the inner end face of the corresponding inner annular groove, and the inner end face of the ceramic sealing ring 9 is pressed against the inner end face of the corresponding annular groove. There is a gap between the flange connecting end plate 11 and the corresponding end cover 20.

[0039] Furthermore, mica insulation blocks 31 are pressed against the left and right sides of the bottom surface of the middle part of the outer insulation sleeve 30. The bottom surface of the mica insulation block 31 is pressed against the top surface of the upper bend formed at the top of the lower support leg 32. The lower part of the lower support leg 32 is formed with a lower bend, and multiple connecting through holes are formed on the lower bend. An upper through hole is formed on the upper bend. The screw part of the fixing bolt 33 is inserted into the corresponding upper through hole of the upper bend and the corresponding vertical through hole of the mica insulation block 31. The top end of the screw part of the fixing bolt 33 extends out of the top surface of the mica insulation block 31 and is screwed into the corresponding screw hole on the bottom surface of the outer insulation sleeve 30.

[0040] Furthermore, a mica heat insulation sleeve 34 is fitted onto the inner wall of the upper through hole, the screw portion of the fixing bolt 33 is inserted into the mica heat insulation sleeve 34, a mica heat insulation washer 35 is inserted into the screw portion of the fixing bolt 33, the top surface of the mica heat insulation sleeve 34 presses against the bottom surface of the mica heat insulation block 31, the bottom surface of the mica heat insulation sleeve 34 presses against the top surface of the mica heat insulation washer 35, and the bottom surface of the mica heat insulation washer 35 presses against the top surface of the rotating part of the fixing bolt 33.

[0041] In this embodiment, the mica insulation block 31, the mica insulation sleeve 34, and the mica insulation gasket 35 create insulation between the outer insulation sleeve 30 and the lower support leg 32, preventing heat conduction and thus further improving heat utilization and greatly enhancing energy saving.

[0042] Finally, it should be noted that the above embodiments are merely representative examples of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. A microchannel reactor, comprising a transverse main tube (10), characterized in that: Both ends of the transverse main body (10) are fixed with end caps (20). A feed connector (21) is welded to the outer wall of the middle part of the left end cap (20). The feed connector (21) communicates with the middle through hole of the left end cap (20). The middle through hole of the right end cap (20) communicates with the discharge connector (22) welded to the right side wall of the right end cap (20). The inner cavity of the transverse main tube (10) is connected to the two central through holes; The left and right ends of the transverse main body (10) are welded and fixed with flange connection end plates (11), and multiple transverse through holes (12) are formed on the flange connection end plates (11). The inner wall of the transverse main body (10) is provided with multiple partitions (13) and spacers (14). The outer walls of the partitions (13) and spacers (14) are closely attached to the inner wall of the transverse main body (10). The left and right ends of the transverse main body (10) are provided with long spacers (15). All the partitions (13) and spacers (14) in the middle are spaced apart. Each spacer (14) is sandwiched between two partitions (13). The inner end of the long spacer (15) is pressed against the outer wall edge of the corresponding partition (13). The outer end of the long spacer (15) is pressed against the inner end face of the corresponding flange connection end plate (11). The outer wall of the long spacer (15) is stuck on the inner wall of the left or right end of the transverse main body (10). All partitions (13) have multiple connecting through holes formed on them. Heat exchange tubes (17) are inserted into the corresponding connecting through holes of all partitions (13). The outer side wall of the heat exchange tube (17) is stuck on the inner side wall of the corresponding connecting through hole. The heat exchange tube (17) is inserted into the corresponding transverse through holes (12) of the two flange connecting end plates (11). Multiple microchannel through holes are formed in the middle of the heat exchange tube (17). The through hole in the middle of the end cap (20) is connected to the corresponding end of the microchannel through holes of all heat exchange tubes (17). Each partition (13) has a flow through hole (131) formed on it. In every two adjacent partitions (13), the upper part of one partition (13) has a flow through hole (131) formed on it, and the lower part of the other partition (13) has a flow through hole (131) formed on it.

2. A microchannel reactor according to claim 1, characterized in that: An outer insulation sleeve (30) is fitted on the outside of the transverse main body (10). The left and right ends of the outer insulation sleeve (30) are welded and fixed to the inner end faces of the two flange connection end plates (11). The heat exchange liquid inlet connection pipe (1) and the heat exchange liquid outlet connection pipe (2) are welded and fixed to the top left and top right sides of the transverse main body (10) respectively and communicate with the through holes on the top left and top right sides of the transverse main body (10) respectively. The outer end of the heat exchange liquid outlet connection pipe (2) extends out of the corresponding through hole on the top wall of the outer insulation sleeve (30). The top wall of the two long spacers (15) is formed with a first flow through hole (4). The first flow through hole (4) communicates with and is opposite to the corresponding through hole of the transverse main body (10).

3. A microchannel reactor according to claim 2, characterized in that: An insulation layer (5) is fixed on the outer wall of the outer insulation sleeve (30).

4. A microchannel reactor according to claim 2, characterized in that: The outer insulation sleeve (30) and the outer side wall of the transverse main body (10) form a sleeve-shaped heat insulation cavity (6). The left and right sides of the outer side wall of the outer insulation sleeve (30) are respectively welded and fixed with an air inlet pipe (7) and an air outlet pipe (8). The air inlet pipe (7) and the air outlet pipe (8) communicate with the corresponding through holes formed on the outer side wall of the outer insulation sleeve (30), and the through holes communicate with the heat insulation cavity (6).

5. A microchannel reactor according to claim 4, characterized in that: The outer end of the air inlet pipe (7) is connected to the air outlet of the ventilator (40), the air inlet of the ventilator (40) is connected to the air inlet control valve (50), and the outer end of the air outlet pipe (8) is connected to the air outlet control valve (60).

6. A microchannel reactor according to claim 1, characterized in that: The outer end faces of the two flange connection end plates (11) are each formed with a central groove. The connecting plate (112) is nested in the corresponding central groove. The outer side wall of the connecting plate (112) is pressed against the inner side wall of the central groove, and the inner end face of the connecting plate (112) is pressed against the inner end face of the corresponding central groove. The end of the heat exchange tube (17) extends out of the corresponding transverse through hole (12) and is inserted into the corresponding through hole formed on the corresponding connecting plate (112) and welded and fixed.

7. A microchannel reactor according to claim 6, characterized in that: The outer end face of the flange connecting end plate (11) is formed with an annular groove, and the inner end face of the corresponding end cover (20) is formed with an inner annular groove. The ceramic sealing ring (9) is inserted into the corresponding annular groove and the inner annular groove. The outer end face of the ceramic sealing ring (9) is pressed against the inner end face of the corresponding inner annular groove, and the inner end face of the ceramic sealing ring (9) is pressed against the inner end face of the corresponding annular groove. There is a gap between the flange connecting end plate (11) and the corresponding end cover (20).

8. A microchannel reactor according to claim 4, characterized in that: The left and right sides of the bottom surface of the middle part of the outer insulation sleeve (30) are pressed against mica insulation blocks (31). The bottom surface of the mica insulation block (31) is pressed against the top surface of the upper bend formed on the top of the lower support leg (32). The lower part of the lower support leg (32) is formed with a lower bend. Multiple connecting through holes are formed on the lower bend. An upper through hole is formed on the upper bend. The screw part of the fixing bolt (33) is inserted into the corresponding upper through hole of the upper bend and the corresponding vertical through hole of the mica insulation block (31). The top end of the screw part of the fixing bolt (33) extends out of the top surface of the mica insulation block (31) and is screwed into the corresponding screw hole on the bottom surface of the outer insulation sleeve (30).

9. A microchannel reactor according to claim 8, characterized in that: A mica heat insulation sleeve (34) is fitted on the inner wall of the upper through hole. The screw part of the fixing bolt (33) is inserted into the mica heat insulation sleeve (34). A mica heat insulation washer (35) is inserted into the screw part of the fixing bolt (33). The top surface of the mica heat insulation sleeve (34) presses against the bottom surface of the mica heat insulation block (31). The bottom surface of the mica heat insulation sleeve (34) presses against the top surface of the mica heat insulation washer (35). The bottom surface of the mica heat insulation washer (35) presses against the top surface of the rotating part of the fixing bolt (33).

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