CN209155864U - A kind of ethoxylation equipment - Google Patents
A kind of ethoxylation equipment Download PDFInfo
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- CN209155864U CN209155864U CN201821745665.5U CN201821745665U CN209155864U CN 209155864 U CN209155864 U CN 209155864U CN 201821745665 U CN201821745665 U CN 201821745665U CN 209155864 U CN209155864 U CN 209155864U
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- reactor
- ethoxylation
- heat exchanger
- premixed device
- circulating system
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Abstract
The utility model relates to technical field of chemical production equipment, more particularly to a kind of ethoxylation equipment, including reactor, ethylene oxide feed pipe, and the initiator feed pipe being connected to reactor, catalyst charge pipe, premixed device and the first external circulating system, the ethylene oxide feed pipe is connected to premixed device, the premixed device is set to the top of reactor, first external circulating system includes first circulation pump, First Heat Exchanger and Venturi nozzle, the reactor, first circulation pump, First Heat Exchanger and premixed device are sequentially communicated, the feed inlet of the Venturi nozzle is connected to the discharge port of First Heat Exchanger, the discharge port of the Venturi nozzle is connected to the feed inlet of reactor.The utility model improves ethoxylation efficiency, increases ethoxylation production capacity；The purity for improving product, reduces the distribution of molecular weight；It improves and increases ratio, be conducive to the product for synthesizing higher molecular weight.
Description
Technical field
The utility model relates to technical field of chemical production equipment, and in particular to a kind of ethoxylation equipment.
Background technique
Ethoxylation refers to that under the effect of the catalyst (initiator is to contain active hydrogen for ethylene oxide and initiator
Organic compound) occur opening, ethoxylation is the important technology for preparing nonionic surfactant, second
Oxygroup nonionic surfactant has excellent biological degradability and adapts to hard water ability, is widely used in detergent, stone
The industrial circles such as oil and pesticide.
The heterocyclic addition reaction equipment applied in domestic industry at present, mainly has traditional stirred tank, PRESS aerosolization anti-
Device (outer circulation reactor), tubular reactor etc. are answered, since the country is generally to use ethyleneoxide addition to react in the majority, so practising
It is used to be referred to as ethoxylation device.
The reaction compartment of existing ethoxylation equipment is small, and reaction is caused not exclusively to cause the distribution of molecular weight product
Unevenly, then make poor product quality.
Summary of the invention
In order to overcome shortcoming and defect existing in the prior art, the purpose of this utility model is to provide a kind of ethyoxyls
Change equipment, improve reaction efficiency, increases ethoxylation production capacity；The purity for improving product, reduces the distribution of molecular weight；It improves
Increase ratio, is conducive to the product for synthesizing higher molecular weight.
The purpose of this utility model is achieved through the following technical solutions: a kind of ethoxylation equipment, including reactor, epoxy
Ethane feed pipe and the initiator feed pipe being connected to reactor, catalyst charge pipe, premixed device and the first outer circulation system
System, the ethylene oxide feed pipe are connected to premixed device, and the premixed device is set to the top of reactor, first outer circulation
System includes first circulation pump, First Heat Exchanger and Venturi nozzle, the reactor, first circulation pump, First Heat Exchanger and
Premixed device is sequentially communicated, and the feed inlet of the Venturi nozzle is connected to the discharge port of First Heat Exchanger, the Venturi nozzle
Discharge port be connected to the feed inlet of reactor.
Preferably, the reactor is provided with the atomizer being connected to premixed device, and the atomizer is located in reaction
The top of device.
Preferably, the first control valve is provided between the first circulation pump and First Heat Exchanger and be used to monitor first
The flowmeter of circulating pump outputting material flow, bypass has finished product discharging between the first circulation pump and the first control valve
Pipe, the finished product discharge nozzle are provided with the second control valve.
Preferably, the ethoxylation equipment further includes tee tube and the second external circulating system being connected to tee tube,
The feed inlet that other two interface of the tee tube is pumped with the discharge port of reactor and first circulation respectively is connected to, and described second
The discharge port of external circulating system is connected to the feed inlet of premixed device.
Preferably, second external circulating system includes second circulation pump and the second heat exchanger, and the tee tube, second follow
Ring pump, the second heat exchanger and premixed device are sequentially communicated.
Preferably, the reactor is provided with pressure test table for monitoring reactor pressure and for monitoring reactor
The thermometer of temperature.
Preferably, the bottom of the reactor is connected with the drainage part of the electrostatic for eliminating electrostatic.
Preferably, the vacuum-pumping tube and use for making the inside of reactor form vacuum are communicated at the top of the reactor
In the nitrogen inlet duct for being filled with nitrogen to reactor, the vacuum-pumping tube is provided with third control valve, and the nitrogen inlet duct is set
It is equipped with the 4th control valve.
Preferably, the ethoxylation equipment further includes reinforcing rib, and the reinforcing rib is sheathed on the outer wall of reactor.
The utility model has the beneficial effects that: the ethoxylation equipment of the utility model, catalyst, initiator pass through respectively
Reactor is flowed by catalyst charge pipe and initiator feed pipe；Under the action of catalyst, ethylene oxide via ethylene oxide into
Expects pipe enters material mixing pre-reaction of the premixed device with the first external circulating system, then flows into reactor, improves reaction efficiency, increases
Ethoxylation production capacity；Since ethoxylation is exothermic reaction, the First Heat Exchanger of the first external circulating system can reduce by first
The temperature of charge of external circulating system, and then reach cooling effect, the reaction temperature in reactor is controlled, avoids temperature excessively high and drops
Low-conversion；The Venturi nozzle of setting sprays into material high-speed in reactor, to reach the effect of material in stirred reactor
Fruit increases reaction contact area, improves and increases ratio, is conducive to the product for synthesizing higher molecular weight.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Appended drawing reference are as follows: 1, reactor；2, ethylene oxide feed pipe；3, initiator feed pipe；4, catalyst charge pipe；5,
Premixed device；6, first circulation pumps；7, First Heat Exchanger；8, Venturi nozzle；9, atomizer；10, the first control valve；11, it flows
Meter；12, finished product discharge nozzle；13, the second control valve；14, tee tube；15, second circulation pumps；16, the second heat exchanger；17, it presses
Power tests table；18, thermometer；19, electrostatic drains part；20, vacuum-pumping tube；21, nitrogen inlet duct；22, third control valve；23,
4th control valve；24, reinforcing rib.
Specific embodiment
For the ease of the understanding of those skilled in the art, the utility model is made into one below with reference to examples and drawings 1
The explanation of step, the content that embodiment refers to not are the restriction to the utility model.
As shown in Figure 1, a kind of ethoxylation equipment, including reactor 1, ethylene oxide feed pipe 2 and and reactor
Initiator feed pipe 3, catalyst charge pipe 4, premixed device 5 and the first external circulating system of 1 connection, the ethylene oxide feed pipe
2 are connected to premixed device 5, and the premixed device 5 is set to the top of reactor 1, and first external circulating system includes first circulation
Pump 6, First Heat Exchanger 7 and Venturi nozzle 8, the reactor 1, first circulation pump 6, First Heat Exchanger 7 and premixed device 5 are successively
Connection, the feed inlet of the Venturi nozzle 8 are connected to the discharge port of First Heat Exchanger 7, the discharge port of the Venturi nozzle 8
It is connected to the feed inlet of reactor 1.
In actual use, catalyst, initiator flow into reaction via catalyst charge pipe 4 and initiator feed pipe 3 respectively
Device 1；Under the action of catalyst, ethylene oxide enters the object of premixed device 5 and the first external circulating system via ethylene oxide feed pipe 2
Material mixing pre-reaction, then reactor 1 is flowed into, reaction efficiency is improved, ethoxylation production capacity is increased；Since ethoxylation is to put
The First Heat Exchanger 7 of thermal response, the first external circulating system can reduce the temperature of charge of the first external circulating system, and then reach cooling
Effect controls the reaction temperature in reactor 1, avoids temperature excessively high and reduce conversion ratio；The Venturi nozzle 8 of setting, by object
Material high speed sprays into reactor 1, to achieve the effect that material in stirred reactor 1, increases reaction contact area, improves and increase
Than being conducive to the product for synthesizing higher molecular weight.In ethylene oxide feed pipe 2, initiator feed pipe 3,4 and of catalyst charge pipe
Under the cooperation of first external circulating system, the liquid volume in reactor 1 accounts for the 1/2-2/3 of 1 internal volume of reactor.The present embodiment
In, the reactor 1 is vertical reactor 1, is more advantageous to cooperation Venturi nozzle 8 and uses, mixing effect is more preferably；Described first
Heat exchanger 7 is tubular heat exchanger, and heat transfer effect more preferably, reduces the temperature of charge of the first external circulating system more quickly.
The reactor 1 is provided with the atomizer 9 being connected to premixed device 5, and the atomizer 9 is located in reactor 1
Top.
In the present embodiment, use atomizer 9 that the liquid in premixed device 5 is ejected to reactor 1 in the form of droplet
It is interior, slowly fall into the liquid surface in reactor 1, during this period, ethylene oxide under the action of catalyst with the first outer circulation system
The material further occurrence ethoxylation of system, increases the molecular weight of product, improves growth ratio, improves reaction efficiency；
The another secondary response in the liquid in reactor 1 again, improves the utilization rate of ethylene oxide.
The first control valve 10 is provided between the first circulation pump 6 and First Heat Exchanger 7 and is followed for monitoring first
Ring pumps the flowmeter 11 of 6 outputting material flows, and bypass has finished product to go out between the first circulation pump 6 and the first control valve 10
Expects pipe 12, the finished product discharge nozzle 12 are provided with the second control valve 13.
In actual use, when the flow velocity that flowmeter 11 is shown reduces 5-8m/s, illustrate first circulation pump 6 in identical acting
Under the conditions of the inventory that conveys reduce, material viscosity becomes larger after ethoxylation, and high yield rate can open the second control at this time
Valve 13 closes the first control valve 10, and material is exported via finished product discharge nozzle 12, closes after the flow velocity that flowmeter 11 is shown gos up
It closes the second control valve 13, open the first control valve 10；The compounding practice of first control valve 10 and the second control valve 13 improves output
The molecular weight of finished product reduces the loss of first circulation pump 6.
The ethoxylation equipment further includes tee tube 14 and the second external circulating system for being connected to tee tube 14, described
Other two interface of tee tube 14 is connected to the feed inlet of the discharge port of reactor 1 and first circulation pump 6 respectively, and described second
The discharge port of external circulating system is connected to the feed inlet of premixed device 5.
In the present embodiment, the material diversion exported reactor 1 using tee tube 14 is to the first external circulating system and
Two external circulating systems reduce the load of the first external circulating system, improve cycle efficieny；In addition, when opening the second control valve 13, closing
When closing the first control valve 10, the material of the first external circulating system flows out finished product discharge nozzle 12, without flowing into premixed device 5, therefore needs
Second external circulating system plays a role, avoid premixed device 5 only have ethylene oxide flow into and cause reacting ethylene oxide not exclusively and
Increase the incidence of safety accident.
Second external circulating system includes second circulation pump 15 and the second heat exchanger 16, and the tee tube 14, second follow
Ring pumps the 15, second heat exchanger 16 and premixed device 5 is sequentially communicated.
In the present embodiment, the second circulation pump 15 of setting promotes the material discharge of reactor 1, promotes circulation；It is arranged
Second heat exchanger 16 advantageously reduces the temperature of material, reduces temperature when material Returning reactor 1, control reactor 1
Reaction temperature avoids the excessively high reduction reaction conversion ratio of temperature.In the present embodiment, second heat exchanger 16 is shell and tube heat exchange
Device, heat exchange efficiency is high, and rate of temperature fall is fast.
The reactor 1 is provided with pressure test table 17 for monitoring 1 pressure of reactor and for monitoring 1 temperature of reactor
The thermometer 18 of degree.
In the present embodiment, the internal pressure of the 17 immediately monitoring reactor 1 of pressure test table of setting, avoids pressure excessive
And temperature is excessive that reactor 1 is caused to burst；The internal temperature of the 18 immediately monitoring reactor 1 of thermometer of setting avoids reaction temperature
Height is spent, leads to that reaction efficiency is low and reaction conversion ratio is low.Further, the pressure test table 17 is set to reactor 1
Top, the thermometer 18 are set to the middle part of reactor 1, are more advantageous to monitoring pressure and temperature.
The bottom of the reactor 1 is connected with the drainage part 19 of the electrostatic for eliminating electrostatic.
In the present embodiment, ethylene oxide is inflammable and explosive, and material is easy to produce electrostatic during transportation, passes through electrostatic
Electrostatic is drained to earth's surface by drainage part 19, and then eliminates electrostatic, prevents electrostatic from causing to explode.In the present embodiment, the electrostatic draws
Stream part 19 is conducting wire.
The top of the reactor 1 is communicated with for making the inside of reactor 1 form the vacuum-pumping tube 20 of vacuum and be used for
The nitrogen inlet duct 21 of nitrogen is filled with to reactor 1, the vacuum-pumping tube 20 is provided with third control valve 22, the nitrogen air inlet
Pipe 21 is provided with the 4th control valve 23.
Ethylene oxide gas in confined space, air reaches 3% or more, and detonation can be occurred by encountering open fire, therefore, if
20 purpose of vacuum-pumping tube set is reactor 1 before being passed through ethylene oxide, the air in reactor 1 is taken away until vacuum shape
State avoids causing reactor 1 to explode because being mixed into air in production process；It is filled with greatly via nitrogen inlet duct 21 to reactor 1 again
Nitrogen is measured, eliminates the danger that ethylene oxide concentration reaches explosion limit, material is in a kind of dynamic gas-liquid contact mistake always
Journey avoids the possibility that autohemagglutination occurs for gas phase ethylene oxide.The third control valve 22 of setting is prevented in the case where stopping vacuum pumping
Gas circulates in vacuum-pumping tube 20, and the 4th control valve 23 of setting is prevented in the gas backflow for stopping input nitrogen post-reactor 1.
The ethoxylation equipment further includes reinforcing rib 24, and the reinforcing rib 24 is sheathed on the outer wall of reactor 1.
In the present embodiment, the reinforcing rib 24 of setting improves the strength and stiffness of reactor 1, avoids holding for reactor 1
The pressure received is excessive and bursts reactor 1.Preferably, the reinforcing rib 24 is fixedly connected with the reactor 1.The present embodiment
In, the quantity of the reinforcing rib 24 is four, and four reinforcing ribs 24 are uniformly distributed in the outer wall of reactor 1.
Above-described embodiment is the preferable implementation of the utility model, and in addition to this, the utility model can be with other sides
Formula realizes that any obvious replacement is in the protection model of the utility model without departing from the concept of the premise utility
Within enclosing.
Claims (9)
1. a kind of ethoxylation equipment, it is characterised in that: including reactor, ethylene oxide feed pipe and with reactor connect
Logical initiator feed pipe, catalyst charge pipe, premixed device and the first external circulating system, the ethylene oxide feed pipe and premix
Device connection, the premixed device are set to the top of reactor, and first external circulating system includes first circulation pump, the first heat exchange
Device and Venturi nozzle, the reactor, first circulation pump, First Heat Exchanger and premixed device are sequentially communicated, the venturi spray
The feed inlet of mouth is connected to the discharge port of First Heat Exchanger, and the discharge port of the Venturi nozzle and the feed inlet of reactor connect
It is logical.
2. a kind of ethoxylation equipment according to claim 1, it is characterised in that: the reactor is provided with and premixed device
The atomizer of connection, the atomizer are located in the top of reactor.
3. a kind of ethoxylation equipment according to claim 1, it is characterised in that: the first circulation pump and the first heat exchange
The first control valve and the flowmeter for monitoring first circulation pump outputting material flow, the first circulation are provided between device
Bypass has finished product discharge nozzle between pump and the first control valve, and the finished product discharge nozzle is provided with the second control valve.
4. a kind of ethoxylation equipment according to claim 1, it is characterised in that: the ethoxylation equipment further includes three
Siphunculus and the second external circulating system being connected to tee tube, other two interface of the tee tube respectively with reactor go out
Material mouth is connected to the feed inlet that first circulation pumps, and the discharge port of second external circulating system is connected to the feed inlet of premixed device.
5. a kind of ethoxylation equipment according to claim 4, it is characterised in that: second external circulating system includes the
Two circulating pumps and the second heat exchanger, the tee tube, second circulation pump, the second heat exchanger and premixed device are sequentially communicated.
6. a kind of ethoxylation equipment according to claim 1, it is characterised in that: the reactor is provided with for monitoring
The pressure test table of reactor pressure and thermometer for monitoring temperature of reactor.
7. a kind of ethoxylation equipment according to claim 1, it is characterised in that: the bottom connection of the reactor is useful
Part is drained in the electrostatic for eliminating electrostatic.
8. a kind of ethoxylation equipment according to claim 1, it is characterised in that: the top connection of the reactor is useful
Nitrogen inlet duct in making the inside of reactor form the vacuum-pumping tube of vacuum and for being filled with from nitrogen to reactor, it is described to take out very
Blank pipe is provided with third control valve, and the nitrogen inlet duct is provided with the 4th control valve.
9. a kind of ethoxylation equipment according to claim 1, it is characterised in that: the ethoxylation equipment further includes adding
Strengthening tendons, the reinforcing rib are sheathed on the outer wall of reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821745665.5U CN209155864U (en) | 2018-10-26 | 2018-10-26 | A kind of ethoxylation equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821745665.5U CN209155864U (en) | 2018-10-26 | 2018-10-26 | A kind of ethoxylation equipment |
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| Publication Number | Publication Date |
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| CN209155864U true CN209155864U (en) | 2019-07-26 |
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ID=67335341
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821745665.5U Active CN209155864U (en) | 2018-10-26 | 2018-10-26 | A kind of ethoxylation equipment |
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| CN (1) | CN209155864U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111013498A (en) * | 2019-12-27 | 2020-04-17 | 江苏奥克化学有限公司 | Ethoxylation reaction device and method |
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2018
- 2018-10-26 CN CN201821745665.5U patent/CN209155864U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111013498A (en) * | 2019-12-27 | 2020-04-17 | 江苏奥克化学有限公司 | Ethoxylation reaction device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An ethoxylation equipment Effective date of registration: 20230627 Granted publication date: 20190726 Pledgee: Bank of China Limited Wuhan Qingshan sub branch Pledgor: WUHAN OXIRAN SPECIALTY CHEMICALS Co. Registration number: Y2023420000252 |