CN216703395U - High-efficient ethylene oxide refining plant - Google Patents

High-efficient ethylene oxide refining plant Download PDF

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Publication number
CN216703395U
CN216703395U CN202123419785.0U CN202123419785U CN216703395U CN 216703395 U CN216703395 U CN 216703395U CN 202123419785 U CN202123419785 U CN 202123419785U CN 216703395 U CN216703395 U CN 216703395U
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heat exchange
ethylene oxide
tower body
exchange tube
support ring
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CN202123419785.0U
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孟拥军
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Fushun Lutong Chemical Co ltd
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Fushun Lutong Chemical Co ltd
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Abstract

The utility model discloses a high-efficiency ethylene oxide refining device which comprises a tower body, wherein a lower support ring is welded inside the tower body, and an upper support ring is welded above the lower support ring; according to the utility model, the temperature data at the upper part of the tower body can be detected in real time through the temperature sensor, and then the temperature data is fed back to the PLC in the form of an electric signal, when the detected temperature data is smaller than the preset value of the PLC, the PLC opens the electric control valve of the high-temperature steam inlet pipe, so that high-temperature steam is synchronously introduced into the first heat exchange pipe and the second heat exchange pipe, the ethylene oxide steam at the middle part and the upper part of the tower body is heated and insulated in a heat conduction mode through the heat of the high-temperature steam, the condition that the ethylene oxide steam is condensed when not reaching the top of the tower body is avoided, the efficiency of ethylene oxide purification is ensured, and the caliber of the ethylene oxide steam in a passing state can be reduced and the heating effect is increased by arranging the horn cover between the lower support ring and the upper support ring.

Description

High-efficient ethylene oxide refining plant
Technical Field
The utility model relates to the technical field of ethylene oxide purification equipment, in particular to a high-efficiency ethylene oxide refining device.
Background
Ethylene Oxide (EO) is the simplest cyclic ether, belongs to heterocyclic compounds and is an important petrochemical product, and because the EO has the characteristics of flammability, explosiveness and difficulty in long-distance transportation, the EO has strong regionality, is widely applied to industries such as washing, pharmacy, printing and dyeing and can be used as an initiator of a cleaning agent in related chemical industries, wherein in the process of producing the EO by oxidizing ethylene, the obtained crude product of the EO contains aldehydes, water and other impurities, and needs to be rectified and purified by a rectifying tower.
When the existing refining tower for purifying crude ethylene oxide is used, because the volume of the refining tower is large, and the temperature of the middle part and the top of the refining tower is lower than that of the tower bottom, when ethylene oxide steam does not reach the tower top, a part of ethylene oxide is changed into liquid and returns to the tower bottom, which is not beneficial to the efficient purification of ethylene oxide.
Therefore, an efficient ethylene oxide refining device is provided, which has the advantages of automatic heating and heat preservation, and further solves the problems in the background art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects in the prior art and provides a high-efficiency ethylene oxide refining device.
In order to achieve the purpose, the utility model adopts the following technical scheme: a high-efficiency ethylene oxide refining device comprises a tower body, wherein a lower support ring is welded in the tower body, an upper support ring is welded above the lower support ring, a horn cover is welded between the lower support ring and the upper support ring, a first heat exchange tube is installed in the horn cover, an annular cylinder shell is welded on the top surface of the upper support ring, a second heat exchange tube is arranged in the annular cylinder shell, a high-temperature steam inlet tube is arranged on one side of the outer portion of the tower body and is respectively connected with one end flange of the first heat exchange tube and one end flange of the second heat exchange tube, a high-temperature steam outlet tube is arranged on the other side of the outer portion of the tower body and is respectively connected with the other end flange of the first heat exchange tube and the other end flange of the second heat exchange tube, an electric control valve is installed on the surface of the high-temperature steam inlet tube, a PLC controller is installed on the surface of the lower portion of the inner side of the tower body, a temperature sensor is installed on the upper portion of the inner side of the tower body, the lower part of the tower body is communicated with a feeding pipe.
As a further description of the above technical solution: the first heat exchange tube is of a tower-shaped structure, a built-in ring is welded on the inner wall surface of the horn cover below the first heat exchange tube, a plurality of U-shaped pipe hoops are mounted on the top surface of the built-in ring through screws and are all sleeved with the lower portion of the first heat exchange tube, two positioning sleeves are welded on the surface of the upper portion of the horn cover, positioning forks are inserted into the two positioning sleeves, and the positioning forks are inserted into the upper portions of the first heat exchange tube.
As a further description of the above technical solution: the positioning sleeve and the positioning fork are arranged in two groups, and the two groups of positioning sleeves and the positioning forks are arranged on the horn cover in a staggered mode.
As a further description of the above technical solution: the annular cylinder shell is internally provided with an annular cavity corresponding to the second heat exchange tube, and the second heat exchange tube is of a spiral structure.
As a further description of the above technical solution: the temperature sensor is a high-temperature-resistant temperature measuring probe.
As a further description of the above technical solution: the output end of the PLC is electrically connected with the input end of the electric control valve of the high-temperature steam inlet pipe, and the temperature sensor is electrically connected with the PLC through a wire.
The utility model has the following beneficial effects:
according to the utility model, temperature data at the upper part of the tower body can be detected in real time through the temperature sensor, and then the temperature data is fed back to the PLC in the form of an electric signal, when the detected temperature data is smaller than the preset value of the PLC, the PLC opens an electric control valve of a high-temperature steam inlet pipe, so that high-temperature steam is synchronously introduced into the first heat exchange pipe and the second heat exchange pipe, the ethylene oxide steam at the middle part and the upper part of the tower body is heated and insulated in a heat conduction mode through the heat of the high-temperature steam, the condition that the ethylene oxide steam is condensed when not reaching the top of the tower body is avoided, the efficiency of ethylene oxide purification is ensured, and the caliber of the ethylene oxide steam in a passing state can be reduced and the heating effect is increased by arranging the horn cover between the lower support ring and the upper support ring;
according to the utility model, the U-shaped pipe hoops are arranged on the built-in ring in the horn cover in a surrounding manner, so that the U-shaped pipe hoops can be connected with the lower part sleeve of the first heat exchange pipe, the fastening of the lower part of the first heat exchange pipe is realized, and the positioning forks in the two positioning sleeves are pushed in opposite directions to promote the positioning forks to extend into the horn cover to be in fork joint with the upper part of the first heat exchange pipe, so that the fixing of the upper part of the first heat exchange pipe is realized, the mounting firmness of the first heat exchange pipe is improved, and the phenomenon that the first heat exchange pipe falls or is locally broken is avoided.
Drawings
FIG. 1 is a schematic view of the structure of a high-efficiency ethylene oxide refining apparatus according to the present invention;
FIG. 2 is a schematic view of a horn cover structure of an efficient ethylene oxide refining apparatus according to the present invention;
FIG. 3 is a schematic view of the upper support ring structure of the high-efficiency ethylene oxide refining apparatus of the present invention.
Illustration of the drawings:
1. a tower body; 2. a feed pipe; 3. a lower support ring; 4. a high-temperature steam inlet pipe; 5. a horn cover; 6. a first heat exchange tube; 7. an upper support ring; 8. an annular cartridge shell; 9. a second heat exchange tube; 10. a temperature sensor; 11. a positioning fork; 12. a high-temperature steam outlet pipe; 13. a built-in ring; 14. a PLC controller; 15. a positioning sleeve; 16. u type ferrule.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
According to an embodiment of the present invention, there is provided a high-efficiency ethylene oxide refining apparatus.
Referring to the drawings and the detailed description, the utility model is further explained, as shown in fig. 1-3, a high-efficiency ethylene oxide refining device according to an embodiment of the utility model comprises a tower body 1, a lower support ring 3 is welded inside the tower body 1, an upper support ring 7 is welded above the lower support ring 3, a horn cover 5 is welded between the lower support ring 3 and the upper support ring 7, a first heat exchange tube 6 is installed inside the horn cover 5, an annular cylindrical shell 8 is welded on the top surface of the upper support ring 7, a second heat exchange tube 9 is arranged inside the annular cylindrical shell 8, a high-temperature steam inlet tube 4 is arranged on one side of the outside of the tower body 1, the high-temperature steam inlet tube 4 is respectively connected with one end flange of the first heat exchange tube 6 and one end flange of the second heat exchange tube 9, a high-temperature steam outlet tube 12 is arranged on the other side of the outside of the tower body 1, and the high-temperature steam outlet tube 12 is respectively connected with the other end flange of the first heat exchange tube 6 and the second heat exchange tube 9, the surface of the high-temperature steam inlet pipe 4 is provided with an electric control valve, the surface of the lower part of the tower body 1 is provided with a PLC (programmable logic controller) 14, the upper part of the inner side of the tower body 1 is provided with a temperature sensor 10, the lower part of the tower body 1 is communicated with the inlet pipe 2, the temperature data of the upper part of the tower body 1 can be detected in real time through the temperature sensor 10 and then fed back to the PLC 14 in the form of an electric signal, when the detected temperature data is less than the preset value of the PLC 14, the PLC 14 opens the electric control valve of the high-temperature steam inlet pipe 4 to promote the high-temperature steam to be synchronously introduced into the first heat exchange pipe 6 and the second heat exchange pipe 9, so that the heat of the high-temperature steam heats and preserves the temperature of the ethylene oxide steam at the middle part and the upper part of the tower body 1 in the form of heat conduction until the high-temperature steam is discharged from the high-temperature steam outlet pipe 12 communicating the first heat exchange pipe 6 and the second heat exchange pipe 9, thereby avoiding the condition that the ethylene oxide steam is condensed when not reaching the top of the tower body 1, the purification efficiency of the ethylene oxide is guaranteed, and the caliber of the ethylene oxide steam in a passing state can be reduced and the heating effect is increased by arranging the horn cover 5 between the lower support ring 3 and the upper support ring 7;
in one embodiment, the first heat exchanging pipe 6 is a tower-shaped structure, an inner ring 13 is welded on the inner wall surface of the horn cover 5 below the first heat exchanging pipe 6, a plurality of U-shaped pipe hoops 16 are installed on the top surface of the inner ring 13 through screws, a plurality of U-shaped pipe hoops 16 are sleeved with the lower part of the first heat exchange pipe 6, two positioning sleeves 15 are welded on the surface of the upper part of the horn cover 5, and the two positioning sleeves 15 are inserted with positioning forks 11, the positioning forks 11 are inserted with the upper part of the first heat exchange tube 6, by installing a plurality of U-shaped pipe hoops 16 around the built-in ring 13 inside the trumpet cover 5, the plurality of U-shaped pipe hoops 16 can be sleeved and connected with the lower part of the first heat exchange pipe 6, and through promoting the location fork 11 in two position sleeves 15 in opposite directions, impel location fork 11 to stretch into loudspeaker cover 5 and the upper portion cross-under of first heat exchange tube 6, realize the fixed of first heat exchange tube 6, promote the fastness of first heat exchange tube 6 installation.
In one embodiment, the positioning sleeves 15 and the positioning forks 11 are arranged in two sets, and the two sets of positioning sleeves 15 and the positioning forks 11 are staggered on the horn cover 5, so that the upper part of the first heat exchange tube 6 is conveniently fixed through the two sets of positioning sleeves 15 and the positioning forks 11, and the firmness is increased.
In one embodiment, an annular cavity is formed in the annular cylindrical shell 8 corresponding to the second heat exchange tube 9, the second heat exchange tube 9 is of a spiral structure, and the upper part of the tower body 1 can be heated and insulated through the annular cylindrical shell 8 and the second heat exchange tube 9.
In one embodiment, the temperature sensor 10 is a temperature probe of a high temperature resistant type, which is convenient for normal operation in a high temperature environment.
In one embodiment, the output end of the PLC controller 14 is electrically connected to the input end of the electric control valve of the high-temperature steam intake pipe 4, the temperature sensor 10 is electrically connected to the PLC controller 14 through a wire, and the control circuit of the PLC controller 14 can be implemented through simple programming by a person skilled in the art, which belongs to the common knowledge in the art, and only the PLC controller 14 is used without modification, so that the control mode and the circuit connection are not described in detail, wherein the PLC controller 14 is connected to an external power supply through a wire, thereby facilitating power supply.
The working principle is as follows:
when the device is used, crude ethylene oxide steam is firstly introduced into the tower body 1 through the inlet pipe 2, the power supply of the PLC 14 is connected, the temperature data at the upper part of the tower body 1 can be detected in real time through the temperature sensor 10 and then fed back to the PLC 14 in the form of electric signals, when the detected temperature data is smaller than the preset value of the PLC 14, the PLC 14 opens the electric control valve of the high-temperature steam inlet pipe 4 to promote the high-temperature steam to be synchronously introduced into the first heat exchange pipe 6 and the second heat exchange pipe 9, so that the heat of the high-temperature steam heats and preserves the heat of the ethylene oxide steam at the middle part and the upper part of the tower body 1 in the form of heat conduction until the high-temperature steam is discharged through the high-temperature steam outlet pipe 12 which communicates the first heat exchange pipe 6 and the second heat exchange pipe 9, the condition that the ethylene oxide steam is condensed when not reaching the top of the tower body 1 is avoided, and the efficiency of ethylene oxide purification is ensured, through set up loudspeaker cover 5 between lower support ring 3 and last support ring 7, can reduce the bore under the condition that ethylene oxide steam passes through, increase the effect of heating, and simultaneously, through install a plurality of U type ferrules 16 around the built-in ring 13 inside loudspeaker cover 5, make a plurality of U type ferrules 16 can establish with the lower part cover of first heat exchange tube 6 and be connected, and through promoting the location fork 11 in two position sleeves 15 in opposite directions, make the location fork 11 stretch into the upper portion cross-under of loudspeaker cover 5 with first heat exchange tube 6, realize the fixed of first heat exchange tube 6, promote the fastness of first heat exchange tube 6 installation.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims (6)

1. The utility model provides a high-efficient ethylene oxide refining plant, includes tower body (1), its characterized in that: the heat exchange tower is characterized in that a lower support ring (3) is welded inside the tower body (1), an upper support ring (7) is welded above the lower support ring (3), a horn cover (5) is welded between the lower support ring (3) and the upper support ring (7), a first heat exchange tube (6) is installed inside the horn cover (5), an annular cylinder shell (8) is welded on the top surface of the upper support ring (7), a second heat exchange tube (9) is arranged inside the annular cylinder shell (8), a high-temperature steam inlet tube (4) is arranged on one side of the outside of the tower body (1), the high-temperature steam inlet tube (4) is connected with one end flange of the first heat exchange tube (6) and one end flange of the second heat exchange tube (9) respectively, a high-temperature steam outlet tube (12) is arranged on the other side of the outside of the tower body (1), and the high-temperature steam outlet tube (12) is connected with the other end flange of the first heat exchange tube (6) and the second heat exchange tube (9) respectively, the surface mounting of high temperature steam intake pipe (4) has automatically controlled valve, tower body (1) lower part surface mounting has PLC controller (14), temperature sensor (10) are installed on tower body (1) inboard upper portion, tower body (1) lower part intercommunication has inlet pipe (2).
2. A high efficiency ethylene oxide refining apparatus according to claim 1, characterized in that: first heat exchange tube (6) are tower type structure, and the lower position of first heat exchange tube (6) has built-in ring (13) in loudspeaker cover (5) internal wall welding, the top surface of built-in ring (13) has a plurality of U type ferrule (16) through the mounting screw, and a plurality of U type ferrule (16) all cup joint with the lower part of first heat exchange tube (6), loudspeaker cover (5) upper portion skin weld has two position sleeve (15), and all pegs graft in two position sleeve (15) and have location fork (11), location fork (11) are pegged graft with the upper portion of first heat exchange tube (6).
3. The high-efficiency ethylene oxide refining device according to claim 2, characterized in that: the positioning sleeve (15) and the positioning fork (11) are arranged in two groups, and the two groups of positioning sleeves (15) and the positioning fork (11) are arranged on the horn cover (5) in a staggered mode.
4. The high-efficiency ethylene oxide refining device according to claim 1, characterized in that: the annular cylinder shell (8) is internally provided with an annular cavity corresponding to the second heat exchange tube (9), and the second heat exchange tube (9) is of a spiral structure.
5. A high efficiency ethylene oxide refining apparatus according to claim 1, characterized in that: the temperature sensor (10) is a high-temperature-resistant temperature measuring probe.
6. A high efficiency ethylene oxide refining apparatus according to claim 1, characterized in that: the output end of the PLC (14) is electrically connected with the input end of an electric control valve of the high-temperature steam inlet pipe (4), and the temperature sensor (10) is electrically connected with the PLC (14) through a lead.
CN202123419785.0U 2021-12-31 2021-12-31 High-efficient ethylene oxide refining plant Active CN216703395U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202123419785.0U CN216703395U (en) 2021-12-31 2021-12-31 High-efficient ethylene oxide refining plant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202123419785.0U CN216703395U (en) 2021-12-31 2021-12-31 High-efficient ethylene oxide refining plant

Publications (1)

Publication Number Publication Date
CN216703395U true CN216703395U (en) 2022-06-10

Family

ID=81888875

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202123419785.0U Active CN216703395U (en) 2021-12-31 2021-12-31 High-efficient ethylene oxide refining plant

Country Status (1)

Country Link
CN (1) CN216703395U (en)

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