CN211601641U - Novel propylene polymerization extrinsic cycle heat transfer device - Google Patents
Novel propylene polymerization extrinsic cycle heat transfer device Download PDFInfo
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- CN211601641U CN211601641U CN201922467967.1U CN201922467967U CN211601641U CN 211601641 U CN211601641 U CN 211601641U CN 201922467967 U CN201922467967 U CN 201922467967U CN 211601641 U CN211601641 U CN 211601641U
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- pipe
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Abstract
The utility model discloses a novel propylene polymerization external circulation heat exchange device, which belongs to the technical field of heat exchange and comprises a shell, wherein a plurality of pipe groups which are parallel to each other and two baffle plates which are used for fixing the pipe groups are arranged in the shell, one end of each pipe group is connected with an inlet valve, the other end of each pipe group is connected with an outlet valve, a circulating water distribution pipe is arranged above each pipe group between the baffle plates, a water tank is arranged below each pipe group between the baffle plates, the water tank is connected with a cooling tower, and a water pump is arranged between each; the nest of tubes includes a plurality of heat exchange tubes that are parallel to each other, and the baffle is located the heat exchange tube both ends, is equipped with the return bend connection of flanged between the adjacent heat exchange tube, and the three-phase control valve is installed to the flange between the heat exchange tube of one side of a baffle and the return bend, and the relief valve with the heat exchange tube intercommunication is installed to the return bend one end flange of another baffle one side, is equipped with the pipeline intercommunication between the adjacent three-phase control valve, is equipped with temperature sensor.
Description
Technical Field
The utility model relates to a heat transfer technical field, concretely relates to novel propylene polymerization extrinsic cycle heat transfer device.
Background
A large amount of polymerization heat is generated in the propylene polymerization process, the polymerization heat is generally taken away by circulating water through a jacket, an inner cooling pipe and the like of equipment, but polymerization reaction kettle equipment is limited by the volume of the equipment, and the heat exchange area of the jacket and the inner cooling is too small to meet the heat removal requirement, so the external circulation heat removal after the propylene gasification becomes the main force. However, the commonly adopted external heat-removal shell-and-tube heat exchanger has two problems, namely that propylene is easy to polymerize under the working condition and is not suitable for moving away from the shell pass, and the heat exchange is influenced by a film on the inner wall of the tube when the heat exchanger is operated for a long time in the tube pass, so that the heat exchanger needs to be washed by utilizing the opportunity of maintenance; secondly, when circulating water flows away from the shell pass, silt is easy to remain in the shell pass or scale is easy to form on the outer wall of the pipe due to water quality. Factors that affect the efficiency of the heat exchanger over a period of operating time exist on both sides of the tube shell.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a pair of novel propylene polymerization extrinsic cycle heat transfer device can switch over the nest of tubes at any time according to the heat transfer condition and device load, and the business turn over mouth valve is closed to carry out intraductal washing and the scale removal of tub outer wall after the pressure release replacement, accomplish the maintenance of not shutting down.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
a novel propylene polymerization external circulation heat exchange device comprises a shell, wherein a plurality of pipe groups which are parallel to each other and two baffles for fixing the pipe groups are arranged in the shell, one end of each pipe group is connected with an inlet valve, the other end of each pipe group is connected with an outlet valve, a circulating water distribution pipe is arranged above the pipe groups between the baffles, a water tank is arranged below the pipe groups between the baffles, the water tank is connected with a cooling tower, and a water pump is arranged between the cooling tower and the circulating water distribution pipe for connection;
the nest of tubes includes a plurality of heat exchange tubes that are parallel to each other, the baffle is located the heat exchange tube both ends, it is adjacent be equipped with the return bend connection of flanged between the heat exchange tube, one baffle one side the flange mounting has the three-phase control valve between heat exchange tube and the return bend, another baffle one side return bend one end flange mounting with the relief valve of heat exchange tube intercommunication, adjacent be equipped with the pipeline intercommunication between the three-phase control valve, be equipped with temperature sensor in the three-phase control valve.
Preferably, an auxiliary pipe is arranged between the outlet valve and the adjacent three-phase control valve for communication.
Preferably, the baffle is provided with a plurality of uniformly distributed strip-shaped through holes matched with the heat exchange tube, one end of each strip-shaped through hole is provided with a small slot hole matched with the tube body of the heat exchange tube, and the other end of each strip-shaped through hole is provided with a large slot hole matched with flanges at two ends of the heat exchange tube.
Preferably, two the side that the baffle kept away from each other be equipped with a plurality of with bar through-hole matched with recess, be equipped with the shielding plate that can freely slide in the recess, establish to sealed joint between shielding plate and the heat exchange tube and be connected.
The utility model has the advantages of that:
1. the utility model discloses in through the inlet valve with the outlet valve cooperation, can be according to heat transfer condition and device load, switch over the nest of tubes at any time, realize the connection between heat exchange tube and the return bend through the flange in the nest of tubes, conveniently carry out the dismouting to the heat exchange tube;
2. the utility model discloses in detect the propylene gas temperature in each heat exchange tube through temperature sensor, realize the concrete embodiment of the heat transfer effect of each heat exchange tube, realize the accurate location of the heat exchange tube that influences the heat transfer effect in the nest of tubes;
3. the utility model discloses in cooperate the separation that realizes specific heat exchange tube in the nest of tubes through three-phase control valve and pipeline, the relief valve of connecting on the cooperation heat exchange tube carries out the pressure release, conveniently maintains the change to the heat exchange tube that the heat exchange effect is poor, simultaneously through heat exchange tube and the return bend of being connected between outlet valve and the adjacent three-phase control valve, can supply the heat exchange tube under operating condition, when making the heat exchange tube in the nest of tubes overhaul, wash, do not influence the whole heat transfer effect of nest of tubes.
Drawings
FIG. 1 is a schematic view of the overall structure of a novel propylene polymerization external circulation heat exchange device of the present invention;
fig. 2 is a schematic structural diagram of a baffle plate of the novel propylene polymerization external circulation heat exchange device.
In the figure: 1-shell, 2-baffle, 3-inlet valve, 4-outlet valve, 5-circulating water distribution pipe, 6-water tank, 7-cooling tower, 8-water pump, 9-heat exchange pipe, 10-elbow, 11-three-phase control valve, 12-pressure relief valve, 13-pipeline, 14-auxiliary pipe, 15-small slotted hole, 16-big slotted hole, 17-groove and 18-baffle plate.
Detailed Description
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
The novel propylene polymerization external circulation heat exchange device shown in fig. 1-2 comprises a shell 1, wherein a plurality of tube groups parallel to each other and two baffles 2 for fixing the tube groups are arranged in the shell 1, one end of each tube group is connected with an inlet valve 3, the other end of each tube group is connected with an outlet valve 4, a circulating water distribution pipe 5 is arranged above each tube group between the baffles 2, a water tank 6 is arranged below each tube group between the baffles 2, the water tank 6 is connected with a cooling tower 7, and a water pump 8 is arranged between each cooling tower 7 and each circulating water distribution pipe 5 for connection; the nest of tubes includes a plurality of heat exchange tubes 9 that are parallel to each other, baffle 2 is located 9 both ends of heat exchange tube, it is adjacent be equipped with flanged return bend 10 between the heat exchange tube 9 and connect, one 2 one side of baffle flange installation has three-phase control valve 11, another between heat exchange tube 9 and the return bend 10 one end flange installation of baffle 2 one side with the relief valve 12 of heat exchange tube 9 intercommunication, it is adjacent be equipped with pipeline 13 intercommunication between the three-phase control valve 11, be equipped with temperature sensor in the three-phase control valve 11.
An auxiliary pipe 14 is arranged between the outlet valve 4 and the adjacent three-phase control valve 11 for communication; a plurality of strip-shaped through holes which are uniformly distributed and matched with the heat exchange tube 9 are formed in the baffle 2, small slotted holes 15 matched with the tube body of the heat exchange tube 9 are formed in one end of each strip-shaped through hole, and large slotted holes 16 matched with flanges at two ends of the heat exchange tube 9 are formed in the other end of each strip-shaped through hole; two the side that baffle 2 kept away from each other be equipped with a plurality of with bar through-hole matched with recess 17, be equipped with in the recess 17 and freely slide shielding plate 18, establish to sealed joint between shielding plate 18 and the heat exchange tube 9 and be connected.
When the utility model works, firstly, the three-phase control valve 11 is controlled to ensure the smoothness between the heat exchange tube 9 and the bent tube 10, the outlet valve 4 is kept to be communicated with the auxiliary tube 14 between the adjacent three-phase control valves 11, then the inlet valve 3 and the outlet valve 4 are controlled to select the tube group to be used, then the circulating water distribution pipe 5 is started to carry out water spraying and cooling on the selected tube group, in the cooling process, the temperature sensor in the three-phase control valve 11 is used for detecting the propylene gas temperature at different parts in the tube group, when the temperature detected by the temperature sensor is higher, the pipeline 13 communicated with the three-phase control valve 11 where the temperature sensor is arranged is opened, so that the heat exchange tube 9 and the bent tube 10 between the three-phase control valves 11 at the two ends of the pipeline 13 are closed, and the auxiliary tube 14 is closed simultaneously, opening the heat exchange tube 9 and the elbow 10 between the port valve and the adjacent three-phase control valve 11, keeping the number of the heat exchange tubes 9 working in the tube group unchanged, then discharging propylene gas in the heat exchange tube 9 through the pressure relief valve 12 connected to the closed heat exchange tube 9, then opening a flange matched with the closed heat exchange tube 9, separating the heat exchange tube 9 from the tube group, then moving the position of the heat exchange tube 9 on the baffle 2, taking the heat exchange tube 9 off the baffle 2 for maintenance and cleaning, wherein in the maintenance and cleaning processes of the heat exchange tube 9, the tube group keeps normal working, and after the tube group works for a period of time, the maintenance and cleaning of the whole tube group is realized by closing the inlet valve 3 and the outlet valve 4; wherein the water that circulating water distributor 5 sprayed gathers in the water tank 6, will after a period of time water in the water tank 6 is leading-in the cooling tower 7, can lead-in through the water pump in the cooling tower 7, simultaneously water is in deposit in the water tank 6 a period of time and both can go the impurity and also can cool down, it is right when needing the cooling of heat exchange tube 9, control water pump 8 will water in the cooling tower 7 is injected the 5 nest of tubes of circulating water distributor 5 is drenched the water cooling.
The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.
Claims (4)
1. A novel propylene polymerization external circulation heat exchange device is characterized by comprising a shell, wherein a plurality of pipe groups which are parallel to each other and two baffles for fixing the pipe groups are arranged in the shell, one end of each pipe group is connected with an inlet valve, the other end of each pipe group is connected with an outlet valve, a circulating water distribution pipe is arranged above each pipe group between the baffles, a water tank is arranged below each pipe group between the baffles, the water tank is connected with a cooling tower, and a water pump is arranged between each cooling tower and each circulating water distribution pipe for connection;
the nest of tubes includes a plurality of heat exchange tubes that are parallel to each other, the baffle is located the heat exchange tube both ends, it is adjacent be equipped with the return bend connection of flanged between the heat exchange tube, one baffle one side the flange mounting has the three-phase control valve between heat exchange tube and the return bend, another baffle one side return bend one end flange mounting with the relief valve of heat exchange tube intercommunication, adjacent be equipped with the pipeline intercommunication between the three-phase control valve, be equipped with temperature sensor in the three-phase control valve.
2. The novel propylene polymerization external circulation heat exchange device as claimed in claim 1, wherein auxiliary pipes are arranged between the outlet valve and the adjacent three-phase control valve for communication.
3. The novel propylene polymerization external circulation heat exchange device as claimed in claim 1, wherein the baffle plate is provided with a plurality of uniformly distributed bar-shaped through holes matched with the heat exchange tubes, one end of each bar-shaped through hole is provided with a small slot hole matched with the tube body of the heat exchange tube, and the other end of each bar-shaped through hole is provided with a large slot hole matched with flanges at two ends of the heat exchange tube.
4. The novel propylene polymerization external circulation heat exchange device as claimed in claim 3, wherein the side surfaces of the two baffle plates, which are far away from each other, are provided with a plurality of grooves matched with the strip-shaped through holes, the grooves are internally provided with freely slidable baffle plates, and the baffle plates are connected with the heat exchange tubes in a sealing clamping manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922467967.1U CN211601641U (en) | 2019-12-31 | 2019-12-31 | Novel propylene polymerization extrinsic cycle heat transfer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922467967.1U CN211601641U (en) | 2019-12-31 | 2019-12-31 | Novel propylene polymerization extrinsic cycle heat transfer device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211601641U true CN211601641U (en) | 2020-09-29 |
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ID=72598733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922467967.1U Active CN211601641U (en) | 2019-12-31 | 2019-12-31 | Novel propylene polymerization extrinsic cycle heat transfer device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211601641U (en) |
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2019
- 2019-12-31 CN CN201922467967.1U patent/CN211601641U/en active Active
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