CN215428956U - Ethoxylation reaction device capable of utilizing reaction waste heat - Google Patents
Ethoxylation reaction device capable of utilizing reaction waste heat Download PDFInfo
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- CN215428956U CN215428956U CN202120945123.8U CN202120945123U CN215428956U CN 215428956 U CN215428956 U CN 215428956U CN 202120945123 U CN202120945123 U CN 202120945123U CN 215428956 U CN215428956 U CN 215428956U
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Abstract
The utility model relates to an ethoxylation reaction device capable of utilizing reaction waste heat, which comprises a pretreatment kettle, a reactor, a feeding pipeline, a heat exchange pipeline, a circulating pump, a heat exchanger, an input pipeline and a return pipeline, wherein the pretreatment kettle is provided with a pretreatment kettle cavity and a heat exchange channel, the reactor is provided with a reactor cavity, two ends of the feeding pipeline are respectively communicated with the pretreatment kettle cavity and the reactor cavity, two ends of the heat exchange pipeline are both connected to the reactor, two ends of the input pipeline are respectively butted on the heat exchange channel and the heat exchange pipeline, and two ends of the return pipeline are respectively butted on the heat exchange channel and the heat exchange pipeline. The device can provide sufficient heat for the raw materials in the cavity of the pretreatment kettle to reach the reaction condition induced by the reactor by utilizing the heat generated by normal reaction, thereby not only reducing the waste of heat and effectively improving the efficiency of ethoxylation reaction, but also having simple and reliable integral structure, convenient manufacture, good reliability, strong applicability and the like.
Description
Technical Field
The utility model relates to the technical field of ethoxylation reaction, in particular to an ethoxylation reaction device.
Background
At present, steam is required to be introduced by a heat exchanger in the earlier stage of ethoxylation reaction, and after an initiator passing through the heat exchanger is heated to reach the dehydration temperature, the induction reaction can be carried out after temperature rise dehydration and nitrogen vacuum replacement are carried out and the temperature of the induction reaction is reached. After the induction reaction is finished, the reaction enters a normal reaction stage, the normal reaction stage can release heat after the reaction, and the traditional process is to use cooling water of a heat exchanger to remove the temperature of the reaction materials passing through the heat exchanger so as to achieve the control temperature required by the reaction. Therefore, not only can the heat discharged in the normal reaction stage be wasted, but also the whole ethoxylation efficiency can be influenced by the speed of the induced reaction. Therefore, it is necessary to redesign the structure of the ethoxylation apparatus.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems and the defects, and provides an ethoxylation reaction device capable of utilizing reaction waste heat, which can utilize heat generated by normal reaction to provide sufficient heat for the raw materials in a cavity of a pretreatment kettle to reach the reaction condition induced by a reactor, thereby not only reducing heat waste, but also being beneficial to improving production efficiency, and further effectively improving the efficiency of ethoxylation reaction.
The technical scheme of the utility model is realized as follows:
an ethoxylation reaction device capable of utilizing reaction waste heat is characterized by comprising a pretreatment kettle, a reactor, a feeding pipeline, a heat exchange pipeline, a circulating pump, a heat exchanger, an input pipeline and a return pipeline, wherein the pretreatment kettle is respectively provided with a pretreatment kettle cavity and a heat exchange channel, the reactor is provided with a reactor cavity, two ends of the feeding pipeline are respectively connected with the pretreatment kettle and the reactor, and two ends of the feeding pipeline are respectively communicated with the pretreatment kettle cavity and the rear reactor cavity, one end of the heat exchange pipeline is communicated with the cavity bottom of the rear reactor cavity, the other end of the heat exchange pipeline is arranged in the upper half part of the rear reactor cavity, the circulating pump and the heat exchanger are both connected in series on the heat exchange pipeline, the heat exchange pipeline at one side of the input end of the heat exchanger is respectively provided with a first pair of interfaces and a second pair of interfaces, and the second pair of interfaces are positioned between the first pair of interfaces and the input end of the heat exchanger, the two ends of the input pipeline are respectively butted on the input end of the heat exchange channel and the first pair of interfaces, and the two ends of the return pipeline are respectively butted on the output end of the heat exchange channel and the second pair of interfaces.
Preferably, the pretreatment kettle comprises a pretreatment kettle body and a coating body, the coating body is coated on the outer surface of the pretreatment kettle body, the pretreatment kettle cavity is arranged in the pretreatment kettle body, the heat exchange channel is arranged on the pretreatment kettle body, and the feeding pipeline is connected to the pretreatment kettle cavity.
Preferably, the coating body is a coil pipe, the coating body is wound on the pre-treatment kettle body, and an inner hole of the coating body forms a heat exchange channel
Preferably, the bottom of the pretreatment kettle body is provided with a discharge pipe orifice communicated with the cavity bottom of the pretreatment kettle cavity, and the discharge pipe orifice is provided with a first switch valve.
Preferably, a stirring mechanism is arranged in the pretreatment kettle cavity.
Preferably, the rabbling mechanism includes driving motor, puddler, stirring vane, driving motor sets up the top in the preceding processing kettle, the one end driving motor looks transmission of puddler is connected to make the other end of puddler arrange the preceding processing kettle cavity in, stirring vane sets up on the puddler in the preceding processing kettle cavity.
Preferably, a feeding pump is connected in series on the feeding pipeline.
Preferably, the heat exchange pipeline is connected with a regulating valve in series, and the regulating valve is positioned on the heat exchange pipeline between the first pair of interfaces and the second pair of interfaces.
Preferably, a second switch valve is connected in series with the input pipeline.
Preferably, a third on-off valve is connected in series to the return pipeline.
The utility model has the beneficial effects that: in the ethoxylation reaction device, the pretreatment kettle is respectively provided with the pretreatment kettle cavity and the heat exchange channel, so that the pretreatment kettle cavity can meet the requirement of induced reaction, and the heat exchange channel can meet the aim of introducing high-temperature substances so as to provide heat for the induced reaction. Because the reactor cavity is arranged on the reactor, and the reactor cavity is communicated with the pretreatment kettle cavity through the feeding pipeline, the raw materials can be firstly subjected to induced pretreatment in the pretreatment kettle cavity, and then are introduced into the post reactor cavity through the feeding pipeline for normal reaction. Thus, when the heat exchange pipeline is communicated with the heat exchange channel through the input pipeline and the return pipeline, the raw materials in the reactor cavity can be introduced into the heat exchange channel. Since the post reactor chamber is performing a normal reaction, the heat of the raw material is large. After the raw materials are introduced into the heat exchange channel, the raw materials in the cavity of the pretreatment kettle can be heated, so that heat generated by normal reaction can provide heat conditions for the induced reaction of the reactor, and the heat waste can be reduced, and the efficiency of the induced reaction can be improved. And when in normal reaction, the initiator in the cavity of the pretreatment kettle can be heated at one side to achieve the reaction condition induced by the reactor; on one side, the temperature of the reaction materials in the reaction process of the reactor can be reduced, thereby effectively improving the efficiency of ethoxylation reaction. And the method greatly solves the problem of steam shortage, saves energy, reduces consumption, reduces reaction cost and makes contribution to environmental protection. Through making input pipeline, backflow pipeline dock respectively on first to interface, the second to the interface, can let in the raw materials that has not passed through the heat exchanger in to the heat transfer passageway like this to just can provide sufficient heat for the starter in the preliminary treatment cauldron cavity, reach reactor induction reaction condition, this ethoxylation device's reliability is very high. Through the setting of circulating pump and heat exchanger, can satisfy the heat transfer demand of normal reaction well to this ethoxylation device can satisfy the demand of in-service use well. Simultaneously, this ethoxylation device's overall structure is still very simple reliable, and this can make things convenient for this ethoxylation device's manufacturing to help improving this ethoxylation device's suitability.
Drawings
FIG. 1 is a schematic structural diagram of an ethoxylation apparatus according to the present invention.
FIG. 2 is a second schematic view of the ethoxylation apparatus of the present invention.
Detailed Description
As shown in figure 1, the ethoxylation reaction device capable of utilizing reaction waste heat comprises a pretreatment kettle 1, a reactor 2, a feeding pipeline 3, a heat exchange pipeline 4, a circulating pump 5, a heat exchanger 6, an input pipeline 7 and a return pipeline 8, wherein the pretreatment kettle 1 is respectively provided with a pretreatment kettle cavity 11 and a heat exchange channel 12 which are not communicated with each other, the reactor 2 is provided with a reactor cavity 21, two ends of the feeding pipeline 3 are respectively connected to the pretreatment kettle 1 cavity and the reactor 2, two ends of the feeding pipeline 3 are respectively communicated with the pretreatment kettle cavity 11 and the reactor cavity 21, one end of the heat exchange pipeline 4 is communicated with the cavity bottom of the reactor cavity 21, the other end of the heat exchange pipeline 4 is arranged in the upper half part of the reactor cavity 21, the circulating pump 5 and the heat exchanger 6 are both connected in series to the heat exchange pipeline 4, and the heat exchange pipeline 4 on one side of the input end of the heat exchanger 6 is respectively provided with a first pair of interfaces 41, And a second pair of interfaces 42, where the second pair of interfaces 42 is located between the first pair of interfaces 41 and the input end of the heat exchanger 6, two ends of the input pipeline 7 are respectively butted to the input end of the heat exchange channel 12 and the first pair of interfaces 41, and two ends of the return pipeline 8 are respectively butted to the output end of the heat exchange channel 12 and the second pair of interfaces 42.
In the ethoxylation reaction device, the pretreatment kettle cavity 11 and the heat exchange channel 12 which are not communicated with each other are respectively arranged on the pretreatment kettle 1, so that the pretreatment kettle cavity 11 can meet the requirement of the reactor on induction reaction, and the heat exchange channel 12 can meet the aim of introducing high-temperature substances so as to provide heat under the condition of induction reaction.
Because the reactor cavity 21 is arranged on the reactor 2, and the reactor cavity 21 is communicated with the pretreatment kettle cavity 11 through the feeding pipeline 3, the raw materials can firstly reach the reaction inducing condition of the reactor in the pretreatment kettle cavity 11, and then are introduced into the reactor cavity 21 through the feeding pipeline 3 to normally react with the ethylene oxide.
Thus, when the heat exchange pipe 4 is communicated with the heat exchange channel 12 through the input pipe 7 and the return pipe 8, the reaction materials in the reactor chamber 21 can be introduced into the heat exchange channel 12. Since the reactor chamber 21 is performing a normal reaction, the heat of the reaction mass is large. After the reaction materials are introduced into the heat exchange channel 12, the initiator in the pretreatment kettle cavity 11 can be heated, so that heat generated by normal reaction can be provided for the reaction condition of the reactor, thereby not only reducing heat waste, but also being beneficial to improving the efficiency of the induced reaction. And when in normal reaction, the initiator in the cavity of the pretreatment kettle can be heated at one side to achieve the reaction condition induced by the reactor; on one side, the temperature of the reaction materials in the reaction process of the reactor can be reduced, thereby effectively improving the efficiency of ethoxylation reaction. And the method greatly solves the problem of steam shortage, saves energy, reduces consumption, reduces reaction cost and makes contribution to environmental protection.
Through making input pipeline 7, backflow pipeline 8 dock respectively on first to interface 41, second to interface 42, can let in the reaction material that has not passed through heat exchanger 6 in to heat transfer passageway 12 like this to just can reach reactor induction reaction condition for the raw materials in the preliminary treatment cauldron cavity 11 and provide sufficient heat, this ethoxylation device's reliability is very high.
Through the setting of circulating pump 5 and heat exchanger 6, can satisfy the heat transfer demand of normal reaction well to this ethoxylation device can satisfy the demand of in-service use well.
Simultaneously, this ethoxylation device's overall structure is still very simple reliable, and this can make things convenient for this ethoxylation device's manufacturing to help improving this ethoxylation device's suitability.
As shown in fig. 1, the pretreatment kettle 1 includes a pretreatment kettle body 13 and a coating body 14, the coating body 14 is coated on the outer surface of the pretreatment kettle body 13, the pretreatment kettle cavity 11 is arranged in the pretreatment kettle body 13, the heat exchange channel 12 is arranged on the pretreatment kettle body 13, and the feeding pipeline 3 is connected to the pretreatment kettle cavity 11. This pretreatment cauldron 1's structure is very simple reliable, and the homogeneity that lives pretreatment cauldron kettle body 13 through cladding 14 cladding can improve heat transfer effectively, and this helps further improving this ethoxylation device's reliability.
As shown in fig. 1, the coating body 14 is a coil pipe, the coating body 14 is wound on the pre-treatment kettle body 13, and an inner hole of the coating body 14 forms a heat exchange channel 12. This facilitates the production and processing of the coating body 14, and contributes to the improvement of the convenience of the production of the pretreatment tank 1.
As shown in fig. 1, a discharge pipe orifice 15 communicated with the bottom of the pretreatment kettle cavity 11 is arranged at the bottom of the pretreatment kettle body 13, and a first switch valve 151 is arranged on the discharge pipe orifice 15. Through the arrangement of the discharge pipe orifice 15, raw materials can be conveniently discharged, so that the use and maintenance are convenient.
As shown in fig. 1, a stirring mechanism 16 is disposed in the pretreatment kettle cavity 11. Through the setting of rabbling mechanism 16, can play the stirring effect to the raw materials in the pretreatment kettle cavity 11 to help further improving the efficiency that reaches the induction reaction condition.
As shown in fig. 1, the stirring mechanism 16 includes a driving motor 161, a stirring rod 162, and a stirring blade 163, the driving motor 161 is disposed at the top of the pre-treatment tank 1, one end of the stirring rod 162 is in driving connection with the driving motor 161, and the other end of the stirring rod 162 is disposed in the pre-treatment tank cavity 11, and the stirring blade 163 is disposed on the stirring rod 162 in the pre-treatment tank cavity 11. The stirring mechanism 16 is simple and reliable in structure, which helps to improve the reliability and applicability of the ethoxylation reaction device.
As shown in fig. 1, a feeding pump 31 is connected in series to the feeding pipe 3. Through the setting of feeding pump 31, help improving the efficiency of pay-off to can reach the purpose that improves production efficiency.
As shown in fig. 1, a regulating valve 43 is connected in series to the heat exchange pipe 4, and the regulating valve 43 is located on the heat exchange pipe 4 between the first pair of ports 41 and the second pair of ports 42. Through the setting of governing valve 43, can reach the purpose of adjusting the flow to just can reach the volume of adjusting reaction material inflow input pipeline 7, and then just can reach the induced reaction heat of control's purpose, this helps further improving this ethoxylation device's reliability and suitability.
As shown in fig. 1, a second on-off valve 71 is connected in series to the input pipe 7. Through the setting of second ooff valve 71, can reach the purpose of opening, closing input pipeline 7 to the people of being convenient for can be as required open, close input pipeline 7, this helps further improving this ethoxylation device's suitability.
The second switching valve 71 is an automatic switching valve. Thus, the purpose of automatic opening and closing can be achieved, and convenience in use is improved.
As shown in fig. 1, a third on/off valve 81 is connected in series to the return pipe 8. Through the setting of third ooff valve 81, can reach the purpose of opening, closing return line 8 to the people of being convenient for can open, close return line 8 as required, this helps further improving this ethoxylation device's suitability.
The third switch valve 81 is a hand valve. Thus, the purpose of manual opening and closing is achieved, and backflow is avoided.
As shown in fig. 1, a fourth on-off valve 32 is connected in series to one end of the feed pipe 3 close to the pretreatment tank 1. Thus, the feeding pipeline 3 can be conveniently opened and closed as required, and the maintenance is convenient.
As shown in fig. 1, the output end of the feed line 3 flows into the reactor chamber 21 from above the reactor chamber 21. This prevents the reverse flow, which contributes to the improvement of the reliability of the ethoxylation apparatus.
As shown in fig. 2, the pretreatment tank 1, the reactor 2, and the heat exchanger 6 may be provided on the same frame 10. Therefore, the installation and positioning of the pretreatment kettle 1, the reactor 2 and the heat exchanger 6 can be facilitated, and the pipeline arrangement can be facilitated, so that the manufacturing of the ethoxylation device is facilitated.
By adding the pretreatment kettle 1, the input pipeline 7, the reflux pipeline 8 and the like and enabling the regulating valve 43 in front of the inlet of the heat exchanger 6 to enable part of reaction raw materials to pass through the heat exchange channel 12 of the pretreatment kettle 1, the temperature of liquid initiator or solid initiator materials in the pretreatment kettle 1 can be raised and dissolved to reach the production process temperature and state, and when the temperature is raised to the reaction inducing temperature of the reactor after the process flows of temperature rise dehydration, replacement, and the like are completed in the pretreatment kettle 1, the second switch valve 71 is closed for the next batch of normal reaction for standby.
Claims (10)
1. The utility model provides an ethoxylation reaction device that can utilize reaction waste heat which characterized in that: comprises a pretreatment kettle (1), a reactor (2), a feeding pipeline (3), a heat exchange pipeline (4), a circulating pump (5), a heat exchanger (6), an input pipeline (7) and a return pipeline (8), wherein the pretreatment kettle (1) is respectively provided with a pretreatment kettle cavity (11) and a heat exchange channel (12), the reactor (2) is provided with a reactor cavity (21), two ends of the feeding pipeline (3) are respectively connected to the pretreatment kettle (1) and the reactor (2), and two ends of the feeding pipeline (3) are respectively communicated with the pretreatment kettle cavity (11) and the reactor cavity (21), one end of the heat exchange pipeline (4) is communicated with the cavity bottom of the reactor cavity (21), the other end of the heat exchange pipeline (4) is arranged in the upper half part of the reactor cavity (21), the circulating pump (5) and the heat exchanger (6) are both connected in series on the heat exchange pipeline (4), a first pair of interfaces (41) and a second pair of interfaces (42) are respectively arranged on the heat exchange pipeline (4) on one side of the input end of the heat exchanger (6), the second pair of interfaces (42) are positioned between the first pair of interfaces (41) and the input end of the heat exchanger (6), two ends of the input pipeline (7) are respectively in butt joint with the input end of the heat exchange channel (12) and the first pair of interfaces (41), and two ends of the backflow pipeline (8) are respectively in butt joint with the output end of the heat exchange channel (12) and the second pair of interfaces (42).
2. The ethoxylation reaction device capable of utilizing reaction waste heat according to claim 1, characterized in that: the pretreatment kettle (1) comprises a pretreatment kettle body (13) and a coating body (14), wherein the coating body (14) is coated on the outer surface of the pretreatment kettle body (13), a pretreatment kettle cavity (11) is formed in the pretreatment kettle body (13), a heat exchange channel (12) is formed in the pretreatment kettle body (13), and a feeding pipeline (3) is connected to the pretreatment kettle cavity (11).
3. The ethoxylation reaction device capable of utilizing reaction waste heat according to claim 2, characterized in that: the coating body (14) is a coil pipe, the coating body (14) is wound on the pre-treatment kettle body (13), and an inner hole of the coating body (14) forms a heat exchange channel (12).
4. The ethoxylation reaction device capable of utilizing reaction waste heat according to claim 2 or 3, characterized in that: the bottom of the pretreatment kettle body (13) is provided with a discharge pipe orifice (15) communicated with the bottom of the pretreatment kettle cavity (11), and the discharge pipe orifice (15) is provided with a first switch valve (151).
5. The ethoxylation reaction device capable of utilizing reaction waste heat according to claim 1, characterized in that: and a stirring mechanism (16) is arranged in the pretreatment kettle cavity (11).
6. The ethoxylation reaction device capable of utilizing reaction waste heat according to claim 5, characterized in that: rabbling mechanism (16) include driving motor (161), puddler (162), stirring vane (163), driving motor (161) set up the top in pretreatment kettle (1), one end driving motor (161) of puddler (162) are transmission connection mutually to make the other end of puddler (162) arrange pretreatment kettle cavity (11) in, stirring vane (163) set up on puddler (162) in pretreatment kettle cavity (11) in the front.
7. The ethoxylation reaction device capable of utilizing reaction waste heat according to claim 1, characterized in that: and the feeding pipeline (3) is connected with a feeding pump (31) in series.
8. The ethoxylation reaction device capable of utilizing reaction waste heat according to claim 1, characterized in that: and the regulating valve (43) is connected in series on the heat exchange pipeline (4), and the regulating valve (43) is positioned on the heat exchange pipeline (4) between the first pair of interfaces (41) and the second pair of interfaces (42).
9. The ethoxylation reaction device capable of utilizing reaction waste heat according to claim 1, characterized in that: and a second switch valve (71) is connected in series on the input pipeline (7).
10. The ethoxylation reaction device capable of utilizing reaction waste heat according to claim 1 or 9, wherein: and a third switch valve (81) is connected in series on the return pipeline (8).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120945123.8U CN215428956U (en) | 2021-05-05 | 2021-05-05 | Ethoxylation reaction device capable of utilizing reaction waste heat |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120945123.8U CN215428956U (en) | 2021-05-05 | 2021-05-05 | Ethoxylation reaction device capable of utilizing reaction waste heat |
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| CN215428956U true CN215428956U (en) | 2022-01-07 |
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| CN202120945123.8U Active CN215428956U (en) | 2021-05-05 | 2021-05-05 | Ethoxylation reaction device capable of utilizing reaction waste heat |
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