CN208727510U - A kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch - Google Patents
A kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch Download PDFInfo
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- CN208727510U CN208727510U CN201821401192.7U CN201821401192U CN208727510U CN 208727510 U CN208727510 U CN 208727510U CN 201821401192 U CN201821401192 U CN 201821401192U CN 208727510 U CN208727510 U CN 208727510U
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- injection pipe
- venturi
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- tube
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Abstract
The utility model relates to a kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch, the top of injection pipe is equipped with inlet, bottom is equipped with nozzle, external equipped with outer tube, has freedom degree in axial sliding between outer tube and injection pipe；Venturi tube includes contraction section, venturi mixing section and diffuser, injection pipe and the Venturi tube coaxial communication above and below the inside of gas chamber, the nozzle self-constriction section of injection bottom of the tube protrudes into the inlet in Venturi tube and being located at venturi mixing section, and gas entrainment channel is surrounded between the outer wall of injection pipe and the inner wall of Venturi tube contraction section；Gas circuit circulation port is also opened up on gas chamber, the venturi mounting flange connecting with reaction vessel is equipped at the lower installing port of gas chamber bottom, the utility model is structurally reasonable, maintenance is convenient, the mass tranfer coefficient of inside reactor is high, lasting gas-liquid mixed mass transfer not only may be implemented, and instantaneous gas-liquid inverse can rationally be controlled according to specific response situation, it is very suitable to the continuous production of gas liquid reaction.
Description
Technical field
The invention belongs to chemical technology fields, and in particular to it is a kind of apply gas-liquid (Gu) in reaction, object is mutually evenly distributed,
High conversion rate, the entrainment circulating venturi reactor of gas circuit adjustable in pitch.
Background technique
Gas liquid reaction refers to a kind of heterogeneous reaction process in reactant system there are gas phase and liquid phase, usually gas phase reaction
After object is dissolved in liquid phase, then reacted with reactant other in liquid phase.But since the air-liquid in gas liquid reaction system adheres to separately
Different states of matters, in liquid phase reaction process, the component in gas phase has to enter into come into full contact in liquid phase with it and just can be carried out
Reaction, but gas contacts and unstable with liquid level in actual mechanical process, and reaction rate is slow, therefore gas liquid reaction requires
Cooperatively forming special gas liquid reaction system using dedicated gas liquid reaction kettle and corresponding mechanism could effectively carry out.
Traditional gas liquid reaction system capital equipment is autoclave stirred reactor, it is made of container and agitating device, container
Middle setting coil pipe and collet are to meet the preheating of material and react the requirement of cooling.In autoclave stirred reactor reaction process, gas
It is mutually separated in a kettle with liquid phase, gas-liquid contact is insufficient can not to carry out continuing adequately mixing mass transfer, and reaction efficiency is low；
And since system is there are mechanical stirring device, the ratio of height to diameter of reaction kettle is restricted, and increases equipment cost, carries out internal washing
Shi Yinwei is influenced by the structures such as agitating device and internal coil baffle, is rinsed difficult.
In order to which tradition gets rid of limitation of the stirring mass transfer method to gas liquid reaction, gas liquid reaction hardly possible is overcome the problems, such as, in recent years
Those skilled in the art are exploring always a kind of completely new gas-liquid reaction equipment.Venturi effect, also referred to as venturi effect, the effect
It shows as in restricted flow in the flow section by reducing, the phenomenon that flow velocity increase, the reduction of pressure occurs in fluid.It is popular
Ground says that this effect refers to can generate low pressure near swiftly flowing fluid, to generate suction-operated.Utilize this effect
The liquid that the Venturi tube of production can be such that high velocity stream crosses, which generates, sprays effect, and Involving velocity and turbulent fluctuation caused by high-speed jet
Gas-liquid mixed effect can be enhanced in diffusion, thus mass transfer enhancement coefficient and reaction efficiency.However this reactor is in reality
Gas-liquid mixed degree although can be enhanced using venturi effect there is also many problems in application process, 1., but once sprayed
If cannot achieve lasting mixing mass transfer at rear, still suffers from reaction and carry out insufficient problem, reaction raw materials are caused largely
Waste；2. the key of venturi effect is the cooperation of injection pipe and Venturi tube, under identical working flow, nozzle diameter and text
Family name's pipe venturi section diameter and length, will have a direct impact on Gas-Liquid Dispersion effect, and the cooperation of nozzle diameter and venturi inlet section
The instantaneous entrained liquid amount in reaction process is influenced whether again, if cannot be to entrained liquid while control Gas-Liquid Dispersion effect
Amount, which carries out reasonable control, uniformly will be greatly reduced the utilization rate of reactor.
Summary of the invention
The utility model provides a kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch, the utility model
Reaction system is structurally reasonable, maintenance is convenient, and the mass tranfer coefficient of inside reactor is high, and reaction efficiency is high, and the reaction time is short, not only may be used
To realize lasting gas-liquid mixed mass transfer, and instantaneous gas-liquid inverse can rationally be controlled according to specific response situation, it is non-
The often continuous production of suitable gas liquid reaction, relatively interval and Semi-batch reaction substantially increase production efficiency.
In order to realize above-mentioned technical goal, the utility model uses following technical scheme:
A kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch, including injection pipe, Venturi tube and gas chamber, spray
The top for penetrating pipe is equipped with inlet, bottom is equipped with nozzle, external equipped with outer tube, has between the outer tube and injection pipe
Freedom degree in axial sliding；The Venturi tube includes axial sequentially connected contraction section, venturi mixing section and diffuser, institute
The injection pipe stated protrudes into gas chamber from the upper installing port of plenum roof, and wherein the inlet of injection pipe stays in outside gas chamber, injection pipe
Outer tube connect with the upper installing port；The Venturi tube protrudes into gas chamber from the lower installing port of gas chamber bottom,
The diffuser of middle Venturi tube stretches out outside gas chamber, and the contraction section of Venturi tube is connect with gas chamber inner wall, the injection pipe and text
Venturi coaxial communication above and below the inside of gas chamber, the nozzle self-constriction section for spraying bottom of the tube protrude into Venturi tube and are located at larynx
The inlet of road mixing section surrounds gas entrainment channel between the outer wall of injection pipe and the inner wall of Venturi tube contraction section；It is described
Gas chamber on also open up gas circuit circulation port, the gas circuit circulation port is connect with gas circulation line, the lower installation of gas chamber bottom
The venturi mounting flange connecting with reaction vessel is equipped at mouthful.
Through the above technical solutions, the venturi reactor of the utility model, which is mainly combined with reaction vessel, helps gas phase
Liquid phase is sufficiently mixed, and principle is that volume is mutually gone to inhale other phases using flow at high speed, makes each phase close contact, then in reaction kettle
Evenly dispersed or suspension, and complete to react.The working principle of the utility model is as follows: reaction liquid by the top of injection pipe into
Liquid mouth enters in venturi reactor, and the nozzle of the utility model is located at the inlet of venturi mixing section, and reaction solution is passing through spray
High velocity jet is formed when mouth, under the action of venturi effect, injection stream carries channel secretly by gas by gas chamber and takes away gas chamber
Interior gas makes to form negative pressure in gas chamber, under pressure reaction kettle internal upper part gas-phase space reaction gases again by with
The gas circulation line of gas circuit circulation port connection, which enters in gas chamber, forms gas circulation.That is on the literary mound of the utility model
In in reactor under the action of venturi effect and gas circulation line, gas bubble can be recycled back to as liquid is again introduced into
Road, gas-liquid two-phase and a small amount of solid catalyst can directly transport progress circuit and be recycled, and gas-liquid is in entire circuit
In can be achieved persistently mix mass transfer, have significant enhancing to reaction effect.In this course, the specific distribution and mixing of gas-liquid
Mode is as follows: injection liquid carrying gas, which impacts, forms energy consumption on tube wall, strong mixing vibration area is created, at this
In each region, fierce turbulent flow makes the good spreading of foam, and the gas bubble for impacting generation is very generally 30 ~ 70 μm small,
And gas liquid ratio is up to 0.5 ~ 2.0 or more simultaneously, so this is the venturi reactor of the utility model when carrying out gas liquid reaction
Main dispersion mass transfer mode.After having reached most important mass transfer function initially, gas-fluid two-phase mixture is injected into reaction
In the liquid storage of container, the two-phase mixture spouting from venturi reactor is ejected into reaction vessel to cause to swash for the second time
Strong mixing, the mass transfer performance realized again.Current mass transfer is completed by the minute bubbles in reaction vessel, the diameter one of minute bubbles
As between 0.2 ~ 0.7mm, this bubble diameter be greater than venturi injection gas in bubble, this is because venturi injection pipe
In minute bubbles the polymerization of bubble has occurred at this time.
The concrete condition of different gas liquid reactions is adapted to during real reaction, we are often required to the bore to nozzle
It is controlled with working flow, and if the amount of injection of reaction solution and the control of the entrainment of gas improper will be greatly reduced reactor
Utilization rate, for this technical problem, we by the injection pipe sleeve of venturi reactor in an outer tube, by injection pipe
Be tightly connected by the upper installing port of outer tube and plenum roof, and injection pipe itself can in outer tube inner shaft to sliding,
That is with respect to the indoor Venturi tube of gas, its upper and lower position is adjustable to injection pipe.The nozzle of the utility model is located at venturi
The inlet of mixing section, top are connected to by contraction section with gas chamber, are carried out up and down when by position of the movable spray pipe to nozzle
When adjusting, nozzle moves up and down that the amount of opening in gas entrainment channel is made to change near the contraction section of cone cylinder shape, into
And it can come to control reaction process rationally with the instantaneous entrained liquid amount in the regulation reaction process of gradual change.
Further, axial positioning nut, the axial positioning nut are additionally provided on injection pipe described in the utility model
Positioned at the top of outer tube, axial transpose nut and outer tube, injection pipe coaxial arrangement, the internal screw thread of axial nut of transposing and spray
The external screw thread opened up in pipe outer wall is penetrated to match.
Through the above technical solutions, injection pipe and outer tube slide axially that it is preferable to use screw thread adjustings in the utility model
Mode realize.External screw thread is opened up on the outer wall of injection pipe, the coaxial axial positioning nut above outer sleeve, when use only
Axial positioning nut need to be rotated, injection pipe can be with respect to outer sleeve axial displacement, to realize the adjusting to nozzle upper and lower position.
Further, retaining mechanism is additionally provided on injection pipe described in the utility model, the retaining mechanism includes limit
Flange group and stop screw, the stop flange group include the upper limit flange and lower limit method with injection pipe coaxial arrangement
Orchid is wherein fixedly connected at the top of lower limit flange and outer tube, upper limit flange through the connection bolt with thimble with it is upper
Stop flange connection, the axial positioning nut is in the joint gap between upper limit flange and lower limit flange, institute
The top surface for the upper limit flange stated is equipped with the upper locking nut for compressing stop flange group；It is opened on the upper limit flange
Equipped with the limit screw hole radially extended at from edge to axle center, the limit screw hole is connected at injection pipe outer wall, and described
Limit screw hole in be equipped with stop screw.
In order to guarantee the stability of injection pipe Yu outer tube relative position, a cover locking machine is had also been devised in the utility model
Stop screw is located in upper limit flange by structure, the utility model, and control stop screw holds out against injection radially forward when use
The outer wall of pipe, the position of lockable injection pipe.Make to realize its function in upper limit flange since stop screw itself needs to be fixed on
Can, therefore the stability of upper limit flange position will have a direct impact on the function of stop screw, the upper limit in the utility model
Flange and lower limit flange are bolted by connection, and are equipped with thimble between stop flange up and down, in thimble and
Under the action of connection bolt, the position of upper limit flange is firmly locked, while also leaving operation sky for axial positioning nut
Between.It for the position of further stable upper limit flange, while being also prevented from its and unintentional rotation occurs, the utility model is also in the upper limit
The top surface of position flange is also provided with upper locking nut, and when use, which tightens upper locking nut, can be such that the axial of entire stop flange group moves
Dynamic trend and radial rotating are all firmly locked.
Further, sealed device seals between the utility model outer sleeve inner wall and injection pipe outer wall.
Venturi effect is that the venturi reactor of the utility model realizes the core of its function, it is therefore desirable to fully ensure that gas
The airtightness in room space, in the utility model between outer tube and injection pipe can opposite sliding, therefore outer sleeve inner wall
Setting sealing device seals between injection pipe outer wall, guarantees sealing performance.
Further, during sealing device preferred gap sealing described in the utility model, piston ring packing, sealing ring seal
Any, other prior arts for being able to achieve sealing means between similar " piston and outer cylinder body " can rationally be applied practical at this
To guarantee sealing performance in novel technical solution.
Further, it is detachably connected between the contraction section of the utility model Venturi tube and gas chamber inner wall through being threadedly engaged.
Through the above technical solutions, being connected through a screw thread between the contraction section and gas chamber of the utility model Venturi tube, side
Just different model Venturi tube is replaced.
Further, the bottom of nozzle and injection pipe described in the utility model is detachably connected through being threadedly engaged.
Through the above technical solutions, the nozzle and injection pipe of the utility model are connected through a screw thread, replacement can be convenient not
The nozzle of same diameter, taper.
Further, the outside of injection pipe be cased with support and guarantee during injection pipe slides axially with Venturi tube concentricity
Guide sleeve.
Further, the guide sleeve includes the upper guide sleeve and lower guide sleeve for being respectively provided at injection pipe upper and lower end parts.
Through the above technical solutions, the utility model is equipped with guide sleeve in the upper and lower end parts of injection pipe, it is ensured that injection pipe
The concentricity of nozzle and Venturi tube when sliding up and down.
The utility model beneficial effect is: the venturi reactor of 1. the utility model at work can will be subtle
Bubble is spread in liquid phase, so that gas-liquid two-phase mixing section is reached high mass transfer rate, while passing through the gentle body circulation of venturi effect
The cooperation of pipeline allows gas bubble to be again introduced into circulation loop with liquid, and gas-liquid two-phase and a small amount of solid catalyst are all
Progress circuit can be directly transported to be recycled, gas-liquid can be achieved persistently to mix mass transfer in entire circuit, enhance gas-liquid
Mixed effect and void fraction, enhance mass-transfer efficiency.2. the venturi reactor of the use of the new type, injection pipe and outer tube can
Relative movement, when carrying out up and down adjustment by position of the movable spray pipe to nozzle, nozzle is near the contraction section of cone cylinder shape
It moves up and down that the amount of opening in gas entrainment channel is made to change, and then can be with instantaneous in the regulation reaction process of gradual change
Entrained liquid amount rationally to control reaction process.3. the utility model venturi reactor is applied in loop reactor, change
It learns reaction process only controlled by kinetics, be dropped significantly in the industrial amplification process among from laboratory to plant produced
Low difficulty.5. the venturi reactor of the utility model, gas liquid reaction are mainly concentrated in injection pipe, and entire anti-
Liquid is answered quickly to recycle again, this makes reaction system impartial everywhere, and reacting balance can be made to carry out.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is the partial structurtes enlarged drawing at the utility model injection pipe.
Specific embodiment
The invention will be further described with reference to the accompanying drawing.
As depicted in figs. 1 and 2, a kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch, including injection pipe, text
Venturi and gas chamber, the top of injection pipe 1 is equipped with inlet 2, bottom is equipped with nozzle 3, outside is equipped with outer tube 4, wherein nozzle 3
It is detachably connected with the bottom of injection pipe 1 through being threadedly engaged, has in axial sliding between the outer tube 4 and injection pipe 1
Freedom degree, sealed device seals between outer sleeve inner wall and injection pipe outer wall, and it is preferable to use as shown in Figure 2 in embodiment
Sealing ring 16 or sealing ring guarantee sealing performance, the outside of injection pipe be cased with support and guarantee during injection pipe slides axially with
The guide sleeve of Venturi tube concentricity, the guide sleeve in the present embodiment includes the upper guide sleeve for being respectively provided at injection pipe upper and lower end parts
14 and lower guide sleeve 15.The Venturi tube includes axial sequentially connected contraction section A, venturi mixing section B and diffuser C,
The injection pipe 1 protrudes into gas chamber 5 from the upper installing port of plenum roof, and wherein the inlet 2 of injection pipe stays in outside gas chamber, spray
The outer tube 4 for penetrating pipe is connect with the upper installing port；The Venturi tube protrudes into gas chamber from the lower installing port of gas chamber bottom
Interior, wherein the diffuser C of Venturi tube stretches out outside gas chamber 5, matches between 5 inner wall of contraction section A and gas chamber of Venturi tube through screw thread
Conjunction is detachably connected, and the injection pipe 1 is connected to above and below the inside of gas chamber with Venturi tube, sprays the nozzle 2 of bottom of the tube certainly
Contraction section protrudes into the inlet in Venturi tube and being located at venturi mixing section B, outer wall and the Venturi tube contraction section of injection pipe
Gas entrainment channel is surrounded between inner wall；Gas circuit circulation port 6, the gas circuit circulation port and gas are also opened up on the gas chamber
Circulation line connects, and the venturi mounting flange 7 connecting with reaction vessel is equipped at the lower installing port of gas chamber bottom.
Retaining mechanism is additionally provided on the injection pipe of the present embodiment, the retaining mechanism includes stop flange group and limit spiral shell
Nail, the stop flange group include the upper limit flange 9a and lower limit flange 9b with injection pipe coaxial arrangement, lower limit
Position flange 9b is fixedly connected with the top of outer tube 4, and upper limit flange 9a is through connection bolt 10 and the upper limit with thimble 11
Position flange 9a connection, axial nut 8 of transposing is located in the joint gap between upper limit flange 9a and lower limit flange 9b, axial
Nut 8 of transposing is coaxially disposed with outer tube 4, injection pipe 1, is opened up on the internal screw thread and 1 outer wall of injection pipe of axial nut 8 of transposing
External screw thread matches, and the top surface of the upper limit flange is equipped with the upper locking nut 12 for compressing stop flange group；Institute
The limit screw hole radially extended at from edge to axle center is offered on the upper limit flange 9a stated, the limit screw hole is connected to
It sprays at pipe outer wall, and is equipped with stop screw 13 in the limit screw hole.
Claims (9)
1. a kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch, it is characterised in that: including injection pipe, Venturi tube
And gas chamber, the top of injection pipe is equipped with inlet, bottom is equipped with nozzle, external equipped with outer tube, the outer tube and injection
There is freedom degree in axial sliding between pipe；The Venturi tube includes axial sequentially connected contraction section, venturi mixing section
And diffuser, the injection pipe protrude into gas chamber from the upper installing port of plenum roof, wherein the inlet of injection pipe stays in gas
Outdoor, the outer tube of injection pipe are connect with the upper installing port；The Venturi tube is stretched from the lower installing port of gas chamber bottom
In air inlet chamber, wherein the diffuser of Venturi tube stretches out outside gas chamber, and the contraction section of Venturi tube is connect with gas chamber inner wall, described
Injection pipe and the Venturi tube coaxial communication above and below the inside of gas chamber, the nozzle self-constriction section for spraying bottom of the tube protrude into Venturi tube
Inlet that is interior and being located at venturi mixing section, surrounds gas entrainment between the outer wall of injection pipe and the inner wall of Venturi tube contraction section
Channel；Gas circuit circulation port is also opened up on the gas chamber, the gas circuit circulation port is connect with gas circulation line, gas chamber bottom
Lower installing port at be equipped with the venturi mounting flange that connect with reaction vessel.
2. a kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch according to claim 1, it is characterised in that:
Axial positioning nut is additionally provided on the injection pipe, the axial positioning nut is located at the top of outer tube, axial to transpose
Nut and outer tube, injection pipe are coaxially disposed, the external screw thread phase opened up on the internal screw thread and injection pipe outer wall of axial nut of transposing
Cooperation.
3. a kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch according to claim 2, it is characterised in that:
Retaining mechanism is additionally provided on the injection pipe, the retaining mechanism includes stop flange group and stop screw, the limit
Position flange group includes the upper limit flange and lower limit flange with injection pipe coaxial arrangement, wherein lower limit flange and outer tube
Top is fixedly connected, and upper limit flange is through the connection bolt with thimble and upper limit flanged joint, the axial positioning
In joint gap between upper limit flange and lower limit flange, the top surface of the upper limit flange is equipped with to be used nut
In the upper locking nut for compressing stop flange group；It offers on the upper limit flange and radially extends at from edge to axle center
Screw hole is limited, the limit screw hole is connected at injection pipe outer wall, and stop screw is equipped in the limit screw hole.
4. a kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch according to claim 1, it is characterised in that:
Sealed device seals between outer sleeve inner wall and injection pipe outer wall.
5. a kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch according to claim 4, it is characterised in that:
The sealing device is any one of clearance seal, piston ring packing, sealing ring sealing.
6. a kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch according to claim 1, it is characterised in that:
It is detachably connected between the contraction section and gas chamber inner wall of Venturi tube through being threadedly engaged.
7. a kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch according to claim 1, it is characterised in that:
The bottom of the nozzle and injection pipe is detachably connected through being threadedly engaged.
8. a kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch according to claim 1, it is characterised in that:
The outside of injection pipe is cased with support and guarantees the guide sleeve during injection pipe slides axially with Venturi tube concentricity.
9. a kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch according to claim 8, it is characterised in that:
The guide sleeve includes the upper guide sleeve and lower guide sleeve for being respectively provided at injection pipe upper and lower end parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821401192.7U CN208727510U (en) | 2018-08-29 | 2018-08-29 | A kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821401192.7U CN208727510U (en) | 2018-08-29 | 2018-08-29 | A kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch |
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| Publication Number | Publication Date |
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| CN208727510U true CN208727510U (en) | 2019-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821401192.7U Active CN208727510U (en) | 2018-08-29 | 2018-08-29 | A kind of entrainment circulating venturi reactor of gas circuit adjustable in pitch |
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| CN (1) | CN208727510U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112691618A (en) * | 2019-10-22 | 2021-04-23 | 中国石油化工股份有限公司 | Gas-liquid reaction apparatus and denitration method |
-
2018
- 2018-08-29 CN CN201821401192.7U patent/CN208727510U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112691618A (en) * | 2019-10-22 | 2021-04-23 | 中国石油化工股份有限公司 | Gas-liquid reaction apparatus and denitration method |
| CN112691618B (en) * | 2019-10-22 | 2022-12-13 | 中国石油化工股份有限公司 | Gas-liquid reaction apparatus and denitration method |
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| 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: A kind of gas circulation venturi reactor with adjustable entrainment distance Effective date of registration: 20200918 Granted publication date: 20190412 Pledgee: Bank of China Limited Weihai Branch Pledgor: WEIHAI XINYUAN CHEMICAL MACHINERY Co.,Ltd. Registration number: Y2020980006219 |