CN208727464U - A kind of circuit reaction system for gas-liquid continuous production - Google Patents
A kind of circuit reaction system for gas-liquid continuous production Download PDFInfo
- Publication number
- CN208727464U CN208727464U CN201821400819.7U CN201821400819U CN208727464U CN 208727464 U CN208727464 U CN 208727464U CN 201821400819 U CN201821400819 U CN 201821400819U CN 208727464 U CN208727464 U CN 208727464U
- Authority
- CN
- China
- Prior art keywords
- gas
- reaction
- connect
- kettle
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The utility model relates to a kind of circuit reaction systems for gas-liquid continuous production, wherein batching kettle is connect with measuring tank, measuring tank is connect with circuit reaction mechanism, circuit reaction mechanism is connect with flash vaporization kettle, the gas outlet at the top of flash vaporization kettle is connect through distiller condenser with receiving tank, and the waste liquid outlet of flash vaporization kettle bottom is connect with buffer tank；Circuit reaction mechanism in the utility model includes the N grades of loop reactors being sequentially connected in series, loop reactor includes the venturi reactor at autoclave and top, primary circuit reactor is connect into material liquid with measuring tank, N grades of loop reactors connect out finished fluid with flash vaporization kettle, reaction solution is introduced into next stage loop reactor by upper level loop reactor through overflow pipe, loop reactors at different levels connect with external heat exchanger exchange heat to the material liquid in kettle respectively, mass tranfer coefficient inside the reaction system of utility model is high, reaction efficiency is high, reaction time is short, generally realize the continuous production of gas liquid reaction.
Description
Technical field
The invention belongs to chemical production technical fields, and in particular to a kind of cost of investment is low, high conversion rate, using safe
Circuit reaction system for gas-liquid continuous production.
Background technique
More mature high-effect reaction is circuit reaction in the gentle liquid-solid reaction of gas liquid reaction.Currently, external return
Road reactor comparative maturity, is widely used in hydrogenation, oxidation reaction, alkylation, alkoxylate, amination, carbonylation, chlorine
During the reaction process such as change.Since air-liquid adheres to different states of matters separately in gas liquid reaction system, in liquid phase reaction process,
Component in gas phase, which has to enter into come into full contact with just to can be carried out with it in liquid phase, reacts, but gas and liquid in actual mechanical process
Face contact is simultaneously unstable, and reaction rate is slow, therefore gas liquid reaction is required using dedicated gas liquid reaction kettle and corresponding machine
Structure cooperatively forms special gas liquid reaction system and could effectively carry out.But due to gas liquid reaction to object be in contact degree require it is high,
Reaction rate is slow, therefore current gas liquid reaction system can be only done intermittent reaction, and so reaction greatly reduces production
Efficiency.
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.But this reaction system has the disadvantage in that
1, since system is there are mechanical stirring device, the ratio of height to diameter of reaction kettle is restricted, and increases equipment cost, and need in progress
Because being influenced by the structures such as agitating device and internal coil baffle when portion is cleaned, rinse difficult；2, autoclave is stirred to react in system
Device is because gas-liquid contact is insufficient, and mass tranfer coefficient is low to cause reaction efficiency low, and the reaction time is long；3, autoclave stirring is anti-in system
Coil pipe and collet receptor size in device is answered to limit, exchange capability of heat is limited；4, in system autoclave stirred reactor from laboratory
Industrial amplification process among to plant produced is considerably complicated and difficult；5, autoclave stirred reactor majority is used for interval in system
And Semi-batch reaction, Yao Shixian continuous production difficulty are big.
Summary of the invention
The utility model provides a kind of circuit reaction system for gas-liquid continuous production, the reaction of the utility model
System structure is reasonable, maintenance is convenient, and the mass tranfer coefficient inside loop reactor is high, and reaction efficiency is high, and the reaction time is short, generally
The continuous production of gas liquid reaction is realized, 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:
It is a kind of for gas-liquid continuous production circuit reaction system, including batching kettle, measuring tank, circuit reaction mechanism,
External heat exchanger, flash vaporization kettle, receiving tank and buffer tank, the batching kettle are connect with measuring tank, and measuring tank is reacted with circuit
Mechanism connection, circuit reaction mechanism are connect with flash vaporization kettle, and the gas outlet at the top of flash vaporization kettle connects through distiller condenser and receiving tank
It connects, the waste liquid outlet of flash vaporization kettle bottom is connect with buffer tank；
The circuit reaction mechanism includes the N grades of loop reactors being sequentially connected in series, wherein N >=1, the circuit reaction
Device includes autoclave, and the inside of autoclave is equipped with reaction chamber, and venturi reaction is equipped at the top of autoclave
Device, the venturi reactor include Venturi tube, injection pipe and gas chamber, and the injection pipe protrudes into gas from the top of gas chamber
Interior, and be connected in gas chamber with Venturi tube cooperation, the Venturi tube includes entrance, contraction section, venturi mixing section
And diffuser, the inlet of injection pipe upper end stay in outside gas chamber, the nozzle of injection pipe lower end protrudes into Venturi tube through entrance
And it is located at the upper at of venturi mixing section, gas entrainment channel is surrounded between the outer wall of injection pipe and the inner wall of contraction section；Gas chamber
Side be equipped with gas circulation line, and the gas circulation line is connected to autoclave top gas phase space, literary mound
In installing port at the top of outer wall and autoclave of the reactor through gas chamber bottom be tightly connected, the diffuser of Venturi tube lower end
It extends downwardly into reaction chamber, the air inlet flowed into for reaction gas is equipped at the top of autoclave, the side of autoclave is set
There is overflow port, overflow port is connected to overflow pipe, and the opening of Venturi tube diffuser most lower edge is higher than the position where overflow port
It sets；Primary circuit reactor is connect into material liquid with measuring tank, and N grades of loop reactors connect out finished fluid with flash vaporization kettle, and upper one
Grade loop reactor reaction solution is introduced into next stage loop reactor through overflow pipe, loop reactors at different levels respectively with it is external
Formula heat exchanger connection exchange heat to the material liquid in kettle, wherein the inlet of loop reactor injection pipe upper end with accordingly it is external
The liquid outlet of formula heat exchanger connects.
Through the above technical solutions, the circuit that the utility model provides a set of achievable gas liquid reaction continuous production is anti-
Answer system, when this reaction system works, raw material initially enters batching kettle, is mixed to form raw material with catalyst etc. in batching kettle
Then liquid is conveyed and is stored in measuring tank, material liquid reacts machine by being transported to circuit from measuring tank when starting reaction
In structure, what the loop reactor that the circuit reaction mechanism of the utility model is sequentially connected in series by N grades formed, it is reacted in upper circuit
While reacting progress in device, the semi-finished product for reacting part can be acted on by overflow and are sent into junior's loop reactor, progress
Identical reaction is successively transmitted until the loop reactor of most end level-one is sent into semi-finished product overflow in part.According to requiring when use
Product purity difference can increase or decrease concatenated loop reactor, and the series connection of loop reactors at different levels ensure that gas liquid reaction
Abundant progress, realize the balance of product quality and efficiency.The finished fluid finally come out from most final stage loop reactor enters
Flash vaporization kettle.It controls certain temperature and pressure and distiller condenser is entered by flash distillation by product, connect by being condensed into liquid inflow
Closed cans is stored.Flashing remaining liquid delivers into surge tank simultaneously, keeps in surge tank.
Wherein loop reactor is the core of this reaction system, and the loop reactor of this reaction system mainly has anti-by high pressure
Kettle, venturi reactor, external heat exchanger composition are answered, principle is that volume is mutually gone to inhale other phases using flow at high speed, makes each phase
Close contact, then evenly dispersed in reaction kettle or suspension, and complete to react.Venturi reactor at the top of loop reactor
It is a kind of high performance Liqiud-gas mixing device.It is made of Venturi tube, injection pipe, gas chamber and gas circulation line.Match in advance
After the material liquid set enters autoclave, and it is transported into heat exchange in external heat exchanger, gone out from external heat exchanger
The material liquid come enters venturi reactor, and the injection stream of high speed is formed by the nozzle of venturi reactor, and injection stream is passed through
When gas chamber, gas indoor gas is carried channel secretly by gas and is taken away by liquid, forms negative pressure, under pressure reaction chamber top gas
Reaction gas in phase space is again introduced into gas chamber by gas circulation line and forms gas circulation.Liquid carries gas and impacts
Energy consumption is formed on tube wall, creates strong mixing vibration area herein, in this each region, fierce turbulent flow makes foam
Good spreading.Impact the unusual minor diameter of gas bubble generated between 30 ~ 70 μm, and simultaneously gas liquid ratio reached 0.5 ~
More than 2.0.So this is the ideal initially main dispersal device that loop reactor carries out gas liquid reaction, reach initial
Most important mass transfer function, then, gas-fluid two-phase mixture are injected into the liquid storage in loop reactor.It is anti-by venturi
The two-phase mixture for answering device spouting, which is ejected into loop reactor, causes second of fierce mixing, has realized again
Mass transfer performance.Current mass transfer is completed by the minute bubbles in reaction kettle, and the diameter of minute bubbles is between 0.2 ~ 0.7mm, this bubble
Diameter is greater than the bubble in venturi injection gas, this is because bubble has occurred in the minute bubbles in venturi-type eductors at this time
Polymerization.
It is worth noting that, can be connect respectively with external heat exchanger pair in the utility model using loop reactors at different levels
Material liquid in kettle exchanges heat, and the material liquid in the reaction kettle of circuit is pressurized to be sent into external heat exchanger, external heat exchanger
It, can be according to chemical reaction heat transfer requirements system instead of collet, coil pipe or the built-in heat exchanger of traditional autoclave stirred reactor
Make, compared with previous structure, size is not limited by autoclave volume.External heat exchanger can full heat exchange area
Work, or even in the case where reducing working volume (such as semi-batch operation or half kettle material reaction).
Further, loop reactor described in the utility model is equipped with pressure detecting system and system for detecting temperature.
Further, it is equipped between the utility model most end level-one loop reactor and flash vaporization kettle for detecting finished fluid qualification
The sample detection mechanism of rate.
Further, buffer tank described in the utility model is connect with batching kettle
Through the above technical solutions, buffer tank is connect by the reaction system of the utility model with batching kettle, it can be to buffer tank
It is sent into batching kettle after the amount of the liquid of middle collection requirement to be achieved and carries out preparation raw material liquid again, so makes having arrived sufficiently for raw material
The utilization of circulation, while also saving the use of solvent catalyst.
Further, it is connected between batching kettle and measuring tank described in the utility model by dosing pump, the measuring tank
It is connect between the reaction mechanism of circuit by metering pump, passes through flash distillation pump connection, buffer tank between the flash vaporization kettle and buffer tank
Pass through caching pump connection with batching kettle；Material liquid in loop reactors at different levels is sent into corresponding external through circulating pump pressurization and is changed
In hot device.
Through the above technical solutions, the utility model conveys object using force (forcing) pump or metering pump etc. between each reaction vessel
Material ensure that the accuracy of reaction and going on smoothly for reaction, and especially the material liquid in loop reactors at different levels is by following
Ring pump pressurization is sent into external heat exchanger, and the circulating pump of the utility model can convey high air content (volume ratio reaches 30%)
High solids (volume ratio reaches 15%) reaction liquid, circulating pump continue working while alloing gas bubble with reaction solution
Body enters circulation loop, and dynamical circulating pump, which can directly transport gas-liquid two-phase and a small amount of solid catalyst, carries out circuit
Circulation, enhances gas-liquid mixed effect and void fraction, enhances mass-transfer efficiency, and making gas-liquid, persistently mixing passes in entire circuit
Matter, reaction effect have significant enhancing than conventional circuit reactor.
The utility model beneficial effect is: in the reaction system of 1. the utility model, in loop reactors at different levels not
There are mechanical stirring device, the ratio of height to diameter of reaction kettle is unrestricted, therefore can increase ratio of height to diameter reduction equipment cost, especially high
The circuit reaction kettle equipment cost reduction of pressure is more obvious, and inside does not have the structures such as coil pipe, baffle in the reaction kettle of circuit, into
It is rinsed simply, thoroughly when row internal washing.2. in the reaction system of the utility model, the mass tranfer coefficient of loop reactor is high, instead
It answers high-efficient, needs the reaction time short.3. in the reaction system of the utility model, the technique heat exchange of circuit reaction kettle can lead to
External heat exchanger realization is crossed, not by reaction vessel effect of structural dimension, can accomplish full heat exchange area work.4. practical new
In the reaction system of type, chemical reaction process is only being controlled by kinetics in loop reactor, from laboratory to factory
It produces in intermediate industrial amplification process and greatly reduces difficulty.5. the reaction system of the utility model realizes continuous metaplasia
It produces, relatively interval and Semi-batch reaction greatly improve efficiency.
Detailed description of the invention
Fig. 1 is the overall flow figure of the utility model reaction system.
Fig. 2 is the structural schematic diagram of the utility model loop reactor.
Specific embodiment
The invention will be further described with reference to the accompanying drawing.
As shown in Figure 1, a kind of circuit reaction system for gas-liquid continuous production, including batching kettle 1-1, measuring tank 2-
1, circuit reaction mechanism, external heat exchanger, flash vaporization kettle 4-1, receiving tank 5-1 and buffer tank 6-1, the batching kettle 1-1 with
It is connected between measuring tank 2-1 by dosing pump 1-2, is connected between measuring tank 2-1 and circuit reaction mechanism by metering pump 2-2,
Circuit reaction mechanism is connect with flash vaporization kettle 4-1, and the gas outlet at the top of flash vaporization kettle 4-1 is through distiller condenser 7-1 and receiving tank 5-1
Connection will flash remaining liquid by flash distillation pump 4-2 connection between the waste liquid outlet and buffer tank 6-1 of the bottom flash vaporization kettle 4-1
It is conveyed into buffer tank 6-1 and keeps in, buffer tank 6-1 is also connect with batching kettle 1-1 by caching pump 6-2 simultaneously, in buffer tank 6-1
Liquid requirement to be achieved amount after, be fed again into batching kettle 1-1 and carry out preparation raw material liquid again.
The circuit reaction mechanism in the present embodiment includes loop reactor 3-1,3-2 and 3- that three-level is sequentially connected in series
3, as shown in Fig. 2, loop reactor 3-1 includes autoclave 3-1a, autoclave 3- by taking loop reactor 3-1 as an example
1a is equipped with pressure detecting system 3-1m and system for detecting temperature 3-1n.The inside of autoclave is equipped with reaction chamber, and high pressure is anti-
It answers and venturi reactor 3-1b is installed at the top of kettle, the venturi reactor includes Venturi tube, injection pipe and gas chamber,
The injection pipe is protruded into from the top of gas chamber in gas chamber 3-1c, and is connected in gas chamber with Venturi tube cooperation, the text
Venturi includes entrance A, contraction section B, venturi mixing section C and diffuser D, and the inlet 3-1d of injection pipe upper end stays in gas chamber
Outside, the nozzle 3-1e of injection pipe lower end is protruded into through entrance A in Venturi tube and positioned at the upper at of venturi mixing section C, injection
Gas entrainment channel is surrounded between the outer wall of pipe and the inner wall of contraction section B；The side of gas chamber is equipped with gas circulation line 3-1f, and
The gas circulation line is connected to autoclave top gas phase space, outer wall of the venturi reactor through gas chamber bottom with
Installing port at the top of autoclave is tightly connected, and the diffuser D of Venturi tube lower end is extended downwardly into reaction chamber, reaction under high pressure
Kettle top portion is equipped with the air inlet that flows into for reaction gas, and the side of autoclave is equipped with overflow port 3-1h, overflow port 3-1h and
Overflow pipe connection, the opening of Venturi tube diffuser most lower edge are higher than the position where overflow port；Primary circuit reactor
3-1 is connect into material liquid with measuring tank 2-1, and three-level loop reactor 3-3 connect out finished fluid with flash vaporization kettle 4-1, and three-level is returned
The sample detection mechanism 8-1 for detecting finished fluid qualification rate is equipped between road reactor 3-3 and flash vaporization kettle 4-1, such as Fig. 1 institute
Show, reaction solution is introduced into next stage loop reactor by upper level loop reactor through overflow pipe, and the position of overflow port is under
The liquid level difference of grade circuit reaction kettle, adjusts and controls by calculating when being applied particularly to a certain gas liquid reaction.At different levels times
Road reactor is pressurizeed in the corresponding external heat exchanger of 3-1B, 3-2B and 3-3B feeding by circulating pump respectively and external heat exchanger
Device 3-1A, 3-2A and 3-3A, which are connected, exchanges heat to the material liquid in kettle, wherein the inlet of loop reactor injection pipe upper end
It is connect with the liquid outlet of corresponding external heat exchanger.
Claims (5)
1. a kind of circuit reaction system for gas-liquid continuous production, it is characterised in that: including batching kettle, measuring tank, circuit
Reaction mechanism, external heat exchanger, flash vaporization kettle, receiving tank and buffer tank, the batching kettle are connect with measuring tank, measuring tank with
The connection of circuit reaction mechanism, circuit reaction mechanism connect with flash vaporization kettle, the gas outlet at the top of flash vaporization kettle through distiller condenser and
Receiving tank connection, the waste liquid outlet of flash vaporization kettle bottom are connect with buffer tank；
The circuit reaction mechanism includes the N grades of loop reactors being sequentially connected in series, wherein N >=1, the loop reactor packet
Autoclave is included, the inside of autoclave is equipped with reaction chamber, is equipped with venturi reactor, institute at the top of autoclave
The venturi reactor stated includes Venturi tube, injection pipe and gas chamber, and the injection pipe protrudes into gas chamber from the top of gas chamber,
And be connected in gas chamber with Venturi tube cooperation, the Venturi tube includes entrance, contraction section, venturi mixing section and diffusion
Section, the inlet of injection pipe upper end stay in outside gas chamber, and the nozzle of injection pipe lower end protrudes into Venturi tube and is located at through entrance
At the upper edge of venturi mixing section, gas entrainment channel is surrounded between the outer wall of injection pipe and the inner wall of contraction section；The side of gas chamber
Equipped with gas circulation line, and the gas circulation line is connected to autoclave top gas phase space, venturi reaction
Installing port at the top of outer wall and autoclave of the device through gas chamber bottom is tightly connected, and the diffuser of Venturi tube lower end is stretched downwards
Enter in reaction chamber, the air inlet flowed into for reaction gas is equipped at the top of autoclave, the side of autoclave is equipped with overflow
Mouthful, overflow port is connected to overflow pipe, and the opening of Venturi tube diffuser most lower edge is higher than the position where overflow port；Level-one
Loop reactor is connect into material liquid with measuring tank, and N grades of loop reactors connect out finished fluid with flash vaporization kettle, and upper level circuit is anti-
Answer device that reaction solution is introduced into next stage loop reactor through overflow pipe, loop reactors at different levels respectively with external heat exchanger
Connection exchanges heat to the material liquid in kettle, wherein the inlet of loop reactor injection pipe upper end and corresponding external heat exchanger
Liquid outlet connection.
2. a kind of circuit reaction system for gas-liquid continuous production according to claim 1, it is characterised in that: described
Loop reactor be equipped with pressure detecting system and system for detecting temperature.
3. a kind of circuit reaction system for gas-liquid continuous production described in any claim according to claim 1 or in 2
System, it is characterised in that: be equipped with the sampling for detecting finished fluid qualification rate between most end level-one loop reactor and flash vaporization kettle and examine
Survey mechanism.
4. a kind of circuit reaction system for gas-liquid continuous production described in any claim according to claim 1 or in 2
System, it is characterised in that: the buffer tank is connect with batching kettle.
5. a kind of circuit reaction system for gas-liquid continuous production according to claim 4, it is characterised in that: described
Batching kettle and measuring tank between by dosing pump connect, between the measuring tank and circuit reaction mechanism by metering pump company
It connects, caching pump connection, circuits at different levels is passed through by flash distillation pump connection, buffer tank and batching kettle between the flash vaporization kettle and buffer tank
Material liquid in reactor is sent into corresponding external heat exchanger through circulating pump pressurization.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821400819.7U CN208727464U (en) | 2018-08-29 | 2018-08-29 | A kind of circuit reaction system for gas-liquid continuous production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821400819.7U CN208727464U (en) | 2018-08-29 | 2018-08-29 | A kind of circuit reaction system for gas-liquid continuous production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208727464U true CN208727464U (en) | 2019-04-12 |
Family
ID=66031740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821400819.7U Active CN208727464U (en) | 2018-08-29 | 2018-08-29 | A kind of circuit reaction system for gas-liquid continuous production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208727464U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586000A (en) * | 2019-09-30 | 2019-12-20 | 中国科学院上海应用物理研究所 | Closed semi-continuous gas-liquid reaction system and method |
| CN114315612A (en) * | 2021-12-27 | 2022-04-12 | 万华化学集团股份有限公司 | Process for continuously producing isopropanolamine |
-
2018
- 2018-08-29 CN CN201821400819.7U patent/CN208727464U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586000A (en) * | 2019-09-30 | 2019-12-20 | 中国科学院上海应用物理研究所 | Closed semi-continuous gas-liquid reaction system and method |
| CN110586000B (en) * | 2019-09-30 | 2021-11-12 | 中国科学院上海应用物理研究所 | Closed semi-continuous gas-liquid reaction system and method |
| CN114315612A (en) * | 2021-12-27 | 2022-04-12 | 万华化学集团股份有限公司 | Process for continuously producing isopropanolamine |
| CN114315612B (en) * | 2021-12-27 | 2024-02-02 | 万华化学集团股份有限公司 | Process for continuously producing isopropanolamine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105254583B (en) | The method that the 5-chloromethyl thiazole of 2 chlorine 5 is prepared using injection circulation reactor | |
| CN206184414U (en) | Mixed reactor of percussion flow | |
| CN103071444B (en) | Gas-liquid reaction device | |
| CN208727464U (en) | A kind of circuit reaction system for gas-liquid continuous production | |
| CN104549057A (en) | Multipurpose tubular packed reactor | |
| CN206492493U (en) | Self-oscillation reactor | |
| CN104759228B (en) | Gas push formula is from stirring combination purification groove | |
| CN107185476A (en) | A kind of multistage, multi-functional injection reactor assembly and its operating method | |
| CN213528594U (en) | Device for continuously preparing peroxide and continuously applying peroxide to oxidation reaction | |
| CN201158590Y (en) | Chlorine dioxide generator | |
| CN205347297U (en) | Can be used to synthetic alkoxylate reaction unit of unsaturated polyether | |
| CN101962352A (en) | Method for continuously producing p-menthane hydroperoxide by p-menthane and device thereof | |
| CN100430331C (en) | Continuous production process of efficient aliphatic concrete water reducing agent | |
| CN209155864U (en) | A kind of ethoxylation equipment | |
| CN214439027U (en) | Production device for preparing ammonium formate by continuously ammoniating formic acid | |
| CN109776336A (en) | A kind of diethanol monoisopropanolamine continuous production processes | |
| CN214319787U (en) | Gas-liquid mixing device in liquid fertilizer production | |
| CN106492609A (en) | A kind of wetted wall tower that is based on is realized absorbing and the united experimental provision of regeneration and regenerator | |
| CN204841602U (en) | Device is added to catalyst in petroleum resin production technology | |
| CN204933436U (en) | Two autoclave continuous nitrification reaction unit | |
| CN104761517B (en) | Continuous refining method of versatate glycidyl | |
| CN209663244U (en) | A kind of tandem injection recirculating-type reaction device | |
| CN210193456U (en) | System for retrieve ammonium sulfate from including ammonia waste water | |
| CN2550372Y (en) | Double circulation gas stirring anaerobic fermentation tank | |
| CN209507875U (en) | A kind of ammonia nitrogen wastewater treatment device |
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: A loop reaction system for gas liquid continuous production 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 |