CN108295689A - The static mixer of ethylene and oxygen - Google Patents
The static mixer of ethylene and oxygen Download PDFInfo
- Publication number
- CN108295689A CN108295689A CN201810017945.2A CN201810017945A CN108295689A CN 108295689 A CN108295689 A CN 108295689A CN 201810017945 A CN201810017945 A CN 201810017945A CN 108295689 A CN108295689 A CN 108295689A
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- oxygen
- ethylene
- distribution pipe
- spiral distribution
- static mixer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/30—Injector mixers
- B01F25/31—Injector mixers in conduits or tubes through which the main component flows
- B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
- B01F25/3133—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit characterised by the specific design of the injector
- B01F25/31332—Ring, torus, toroidal or coiled configurations
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- Chemical Kinetics & Catalysis (AREA)
Abstract
The present invention relates to the static mixers of a kind of ethylene and oxygen, mainly solve the problems, such as that alkene in the prior art and oxygen mix effect are undesirable.The present invention by using a kind of ethylene and oxygen static mixer, including ethylene main pipeline, the end of ethylene main pipeline is connected to mixing chamber, mix several oxygen spiral distribution pipes of indoor deployments, oxygen channel enters ethylene main pipeline center from side, into oxygen distributor, oxygen enters spiral distribution pipe by distributor, spiral distribution pipe plane is vertical with ethylene flow direction, it is uniformly distributed several oxygen jets in each spiral distribution pipe, the nozzle direction technical solution consistent with ethylene flow direction preferably solves the above problem, it can be used in the mixing of ethylene and oxygen.
Description
Technical field
The present invention relates to the static mixers of a kind of ethylene and oxygen.
Background technology
There are two types of the industrial processes of ethylene oxide/ethylene glycol (EO/EG), i.e. chlorethanol method and direct oxidation of ethylene to
Method.Direct oxidation of ethylene to method is divided into as air oxidation process and dioxygen oxidation method.Dioxygen oxidation method is compared with air oxidation process, technique
Flow is slightly shorter, and equipment is less, small investment of founding the factory；The high selectivity of catalyst in oxidation reaction, reaction temperature is lower than air method, right
The quiet run of extension and the maintenance production of catalyst life is advantageously.The production cost of usual dioxygen oxidation method compares air oxygen
Change method low 10% or so.Since dioxygen oxidation method has apparent superiority than air oxidation process, current epoxy in the world
Ethane/glycol unit generally uses dioxygen oxidation method.
Since oxygen and ethylene mixed gas are explosive gas, mixed explosion limit is wider.Oxygen with ethylene
Mixed process concentration quickly reduces, but there are an oxygen concentrations from being in explosion limit after quickly being mixed with ethylene, leaves
The process for limit of exploding.This just proposes very high requirement to the mixing of the Quick uniform of oxygen mixer, and the reliable of oxygen mixer sets
Meter is one of the key equipment of required solution in the necessary guarantee that direct oxidation method is kept the safety in production and the design of EO/EG devices.
At present using in the EO/EG process units of oxygen direct oxidation method technique, ethylene recycle gas and the quick of oxygen mix
Multiple jet mixer is all made of as unification.Oxygen jet is entered ethylene and is mixed by such mixer by the aperture of certain size
In ventilation, to quickly through the explosion limit of ethylene gaseous mixture and oxygen, make the safe, equal of ethylene gaseous mixture and oxygen safely
Even mixing.But it still has the undesirable problem of mixed effect.
Document CN200710118927.5 discloses a kind of methane and oxygen pre-mixer, mainly by shell, gas distribution system
System, heat-exchange system and porous gas distribution grid composition；Gas distributed system uses eddy flow or recycle stream compartment system；Cyclone gas
Body compartment system is made of methane gas handling system, oxygen gas handling system, upper distributor and lower distributor；Recycle stream compartment system
It is made of the methane and respective central feed tube of oxygen, cross feed pipe and annular gas distributor；Heat-exchange system by upper spacer,
Lower clapboard, central inner pipe, outer tube, metal fin, heat transferring medium inlet tube and heat transferring medium outlet composition；Methane and oxygen are logical
Gas distributed system is crossed in a smaller space after primary mixing, by being made of central inner pipe, outer tube and metal fin
Simulation fluid bed complications flow up, reach the mixing of molecular level in exit.
A kind of mixer of alkene and oxygen is disclosed in patent CN 105214528A, mainly at the end of oxygen channel
End has been symmetrical arranged several oxygen dispersion pipes, several oxygen dispersion holes, oxygen have been uniformly distributed on each oxygen dispersion pipe
Pipeline is connected to by oxygen dispersion hole with mixing chamber.But from the point of view of the section of alkene pipeline, oxygen dispersion hole is in the duct at the heart
Comparatively dense, it is sparse near wall.Oxygen concentration at supervisor center is higher than near wall in mixed process, influences mixing effect
Fruit.
Invention content
The technical problem to be solved by the present invention is to the undesirable problems of alkene in the prior art and oxygen mix effect, carry
For a kind of static mixer of new ethylene and oxygen.The equipment has alkene and oxygen mix effect good, and safe and reliable is excellent
Point.
To solve the above problems, the technical solution adopted by the present invention is as follows：A kind of static mixer of ethylene and oxygen, packet
Ethylene main pipeline is included, the end of ethylene main pipeline is connected to mixing chamber, mixes several oxygen spiral distribution pipes of indoor deployments, oxygen hose
Road enters ethylene main pipeline center from side, and into oxygen distributor, oxygen enters spiral distribution pipe, spiral point by distributor
It is vertical with ethylene flow direction to be piped plane, is uniformly distributed several oxygen jets in each spiral distribution pipe, nozzle direction and
Ethylene flow direction is consistent.
In above-mentioned technical proposal, it is preferable that spiral distribution pipe has 2-6,9~30m/s of flow velocity position in distribution ring.
In above-mentioned technical proposal, it is preferable that each spiral distribution pipe is arranged symmetrically in supervisor's sectional uniform.
In above-mentioned technical proposal, it is preferable that all spiral distribution pipes are arranged in a plane.
In above-mentioned technical proposal, it is preferable that the nozzle diameter in round distribution ring is 5~10 millimeters, nozzle velocity 32
~64m/s.
In above-mentioned technical proposal, it is preferable that injector spacing is 3~15 times of nozzle diameter.
In above-mentioned technical proposal, it is preferable that the opening direction of each distribution pipe top nozzle is consistent with alkene flow direction.
In above-mentioned technical proposal, it is preferable that the diameter of oxygen distributor high 2 grades minimum than the diameter of oxygen channel.
This patent devises a kind of mixer of ethylene and oxygen, which lays the distribution of several spirals
Pipe, oxygen enter mixing chamber center oxygen distributor by ethylene main pipeline side wall, and oxygen enters spiral by distributor and distributes
It manages, the orifice jet in spiral distribution pipe enters ethylene conduit and accurately mixed with ethylene gas Quick uniform, ensure that mixed process
In blast area minimize, and ensure mixed gas composition far from explosion section.All spiral distribution pipes of the present invention
Setting is in a plane, and when ethylene distributes tube section by spiral, flow section is reduced, and pressure drop increases, and spiral distribution pipe is made to cut
Face upstream and downstream speed evenly, plays rectified action.And mixer structure of the present invention is flexible, and it can be according to specific production needs
The quantity of spiral distribution pipe and the quantity of spiral distribution pipe top nozzle, and the configuration of the present invention is simple are adjusted, mixing is can obviously reduce
Weld seam quantity in equipment, achieves preferable technique effect.
Description of the drawings
Fig. 1 is a kind of structure diagram of embodiment of mixer of invention olefin and oxygen
Fig. 2 is oxygen spiral distribution pipe arrangement schematic diagram described in the method for the present invention.
In Fig. 1, Fig. 2,1- ethylene import 2- mixer outlet 3- oxygen inlet 4- spiral distribution pipe 5- nozzle 6- oxygen point
With room.
Fig. 3 is that mixer spiral distributes tube section downstream different distance lateral cross section oxygen concentration relational graph in embodiment.
The present invention will be further described below by way of examples, but is not limited only to the present embodiment.
Specific implementation mode
【Embodiment 1】
A kind of static mixer of ethylene and oxygen, as shown in Figure 1, 2, alkene enters mixed zone, oxygen along sprue
Enter mixing chamber central oxygen distributor across alkene main pipeline wall surface, oxygen is by being further separated into several spirals point after distributor
Piping, is mixed by the nozzle in spiral distribution pipe with the ethylene Quick uniform in sprue.
On-line mixing equipment mixer structure parameter is as follows：
Using the mixer of Fig. 1 and ethylene shown in Fig. 2 and oxygen, alkene main pipeline internal diameter：DN1100, oxygen hose deferent
Diameter DN150, central oxygen distributor are the sphere of diameter 250, spiral distribution pipe caliber：DN80, spiral distribution pipe quantity are 3
A, distribution pipe import is distributed in alkene main pipeline section, and the angle between adjoining spiral distribution pipe is 120 degree, is put down in distribution pipe
Equal flow velocity is 12m/s, and the aperture of 35 a diameter of 11mm, nozzle velocity 45m/s, 3 spiral shells are provided in each spiral distribution pipe
Converge and mixing chamber center the end of rotation distribution pipe.
Air inflow is as follows：
Oxygen flow：17t/h
Oxygen temperature：25℃
Oxygen pressure：2.6barG
Oxygen density：36kg/m3
Oxygen viscosity：0.021cp
Circulating air flow：683t/h
Circulating air temperature：35℃
Recycle atmospheric pressure：22barG
Recycle air tightness：20kg/m3
Circulating air viscosity：0.026cp
It is simulated using CFD, circulating air import and oxygen inlet are quality inlet boundary condition, are exported as pressure export boundary
Condition is divided using k-e turbulence models using tetrahedral grid, after calculating convergence, is obtained under mixer spiral distribution tube section
Different distance lateral cross section oxygen concentration is swum, sees Fig. 3, with the growth of mixing distance, the concentration side of oxygen is reduced with deviation,
At the 230mm distances of mixer spiral distribution pipe downstream, the side of oxygen concentration is less than rapidly 0.04 with deviation, illustrates oxygen
Concentration is relatively uniform, i.e. the mixed effect of oxygen and alkene is preferable, and mixing is met in shorter distance and is required.
【Embodiment 2】
According to condition described in embodiment 1 and step, on-line mixing equipment mixer structure parameter is as follows：
On-line mixing equipment mixer structure parameter is as follows：
Using the mixer of Fig. 1 and ethylene shown in Fig. 2 and oxygen, alkene main pipeline internal diameter：DN1100, oxygen hose deferent
Diameter DN150, central oxygen distributor are the sphere of diameter 250, spiral distribution pipe caliber：DN80, spiral distribution pipe quantity are 5
A, distribution pipe import is distributed in alkene main pipeline section, and the angle between adjoining spiral distribution pipe is 72 degree, average in distribution pipe
Flow velocity is 11m/s, and the aperture of 35 a diameter of 11mm, nozzle velocity 45m/s, 5 spirals are provided in each spiral distribution pipe
Converge and mixing chamber center the end of distribution pipe.
Air inflow is as follows：
Oxygen flow：17t/h
Oxygen temperature：25℃
Oxygen pressure：2.6barG
Oxygen density：36kg/m3
Oxygen viscosity：0.021cp
Circulating air flow：683t/h
Circulating air temperature：35℃
Recycle atmospheric pressure：22barG
Recycle air tightness：20kg/m3
Circulating air viscosity：0.026cp
It is simulated using CFD, circulating air import and oxygen inlet are quality inlet boundary condition, are exported as pressure export boundary
Condition is divided using k-e turbulence models using tetrahedral grid, after calculating convergence, is obtained under mixer spiral distribution tube section
Different distance lateral cross section oxygen concentration is swum, with the growth of mixing distance, the concentration side of oxygen is reduced with deviation, in circle
At the 200mm distances of distribution ring downstream, the side of oxygen concentration is less than 0.04 with deviation, illustrates that the concentration of oxygen is relatively uniform, i.e.,
The mixed effect of oxygen and alkene is preferable, can meet mixing substantially and require.
【Embodiment 3】
According to condition described in embodiment 1 and step, on-line mixing equipment mixer structure parameter is as follows：
On-line mixing equipment mixer structure parameter is as follows：
Using the mixer of Fig. 1 and ethylene shown in Fig. 2 and oxygen, alkene main pipeline internal diameter：DN500, oxygen hose deferent
Diameter DN50, central oxygen distributor are the sphere of diameter 100, spiral distribution pipe caliber：DN32, spiral distribution pipe quantity are 2,
Distribution pipe import is distributed in alkene main pipeline section, and the angle between adjoining spiral distribution pipe is 180 degree, mean flow in distribution pipe
Speed is 9m/s, and the aperture of 35 a diameter of 11mm, nozzle velocity 45m/s, 2 spiral distribution are provided in each spiral distribution pipe
Converge and mixing chamber center the end of pipe.
Air inflow is as follows：
Oxygen flow：6t/h
Oxygen temperature：25℃
Oxygen pressure：2.6barG
Oxygen density：36kg/m3
Oxygen viscosity：0.021cp
Circulating air flow：224t/h
Circulating air temperature：35℃
Recycle atmospheric pressure：22barG
Recycle air tightness：20kg/m3
Circulating air viscosity：0.026cp
It is simulated using CFD, circulating air import and oxygen inlet are quality inlet boundary condition, are exported as pressure export boundary
Condition is divided using k-e turbulence models using tetrahedral grid, after calculating convergence, is obtained under mixer spiral distribution tube section
Different distance lateral cross section oxygen concentration is swum, with the growth of mixing distance, the concentration side of oxygen is reduced with deviation, in circle
At the 500mm distances of distribution ring downstream, the side of oxygen concentration is less than 0.04 with deviation, illustrates that the concentration of oxygen is relatively uniform, i.e.,
The mixed effect of oxygen and alkene is preferable, can meet mixing substantially and require.
【Embodiment 4】
According to condition described in embodiment 1 and step, on-line mixing equipment mixer structure parameter is as follows：
On-line mixing equipment mixer structure parameter is as follows：
Using the mixer of Fig. 1 and ethylene shown in Fig. 2 and oxygen, alkene main pipeline internal diameter：DN500, oxygen hose deferent
Diameter DN50, central oxygen distributor are the sphere of diameter 100, spiral distribution pipe caliber：DN32, spiral distribution pipe quantity are 2,
Distribution pipe import is distributed in alkene main pipeline section, and the angle between adjoining spiral distribution pipe is 180 degree, mean flow in distribution pipe
Speed is 9m/s, and the aperture of 18 a diameter of 5mm, nozzle velocity 63m/s, 2 spiral distribution are provided in each spiral distribution pipe
Converge and mixing chamber center the end of pipe.
Air inflow is as follows：
Oxygen flow：6t/h
Oxygen temperature：25℃
Oxygen pressure：2.6barG
Oxygen density：36kg/m3
Oxygen viscosity：0.021cp
Circulating air flow：224t/h
Circulating air temperature：35℃
Recycle atmospheric pressure：22barG
Recycle air tightness：20kg/m3
Circulating air viscosity：0.026cp
It is simulated using CFD, circulating air import and oxygen inlet are quality inlet boundary condition, are exported as pressure export boundary
Condition is divided using k-e turbulence models using tetrahedral grid, after calculating convergence, is obtained under mixer spiral distribution tube section
Different distance lateral cross section oxygen concentration is swum, with the growth of mixing distance, the concentration side of oxygen is reduced with deviation, in circle
At the 450mm distances of distribution ring downstream, the side of oxygen concentration is less than 0.04 with deviation, illustrates that the concentration of oxygen is relatively uniform, i.e.,
The mixed effect of oxygen and alkene is preferable, can meet mixing substantially and require.
【Embodiment 5】
According to condition described in embodiment 1 and step, on-line mixing equipment mixer structure parameter is as follows：
On-line mixing equipment mixer structure parameter is as follows：
Using the mixer of Fig. 1 and ethylene shown in Fig. 2 and oxygen, alkene main pipeline internal diameter：DN11000, oxygen channel
Caliber DN150, central oxygen distributor are the sphere of diameter 250, spiral distribution pipe caliber：DN32, spiral distribution pipe quantity are 6
A, distribution pipe import is distributed in alkene main pipeline section, and the angle between adjoining spiral distribution pipe is 60 degree, average in distribution pipe
Flow velocity is 28m/s, and the aperture of 18 a diameter of 6mm, nozzle velocity 64m/s, 2 spirals point are provided in each spiral distribution pipe
Converge and mixing chamber center the end of piping.
Air inflow is as follows：
Oxygen flow：17t/h
Oxygen temperature：25℃
Oxygen pressure：2.6barG
Oxygen density：36kg/m3
Oxygen viscosity：0.021cp
Circulating air flow：683t/h
Circulating air temperature：35℃
Recycle atmospheric pressure：22barG
Recycle air tightness：20kg/m3
Circulating air viscosity：0.026cp
It is simulated using CFD, circulating air import and oxygen inlet are quality inlet boundary condition, are exported as pressure export boundary
Condition is divided using k-e turbulence models using tetrahedral grid, after calculating convergence, is obtained under mixer spiral distribution tube section
Different distance lateral cross section oxygen concentration is swum, with the growth of mixing distance, the concentration side of oxygen is reduced with deviation, in circle
At the 480mm distances of distribution ring downstream, the side of oxygen concentration is less than 0.04 with deviation, illustrates that the concentration of oxygen is relatively uniform, i.e.,
The mixed effect of oxygen and alkene is preferable, can meet mixing substantially and require.
【Comparative example】
Using the mixer of alkene and oxygen disclosed in patent CN105214528A, oxygen supply manifold distributes for rice font
Pipe, it is 7mm that distribution pipe caliber, which uses the pipe of DN40, nozzle bore size, each opens 12 nozzles by all means.Injector spacing
70mm.It using the feed conditions of embodiment 1, is simulated using CFD, circulating air import and oxygen inlet are quality inlet boundary item
Part is exported and is divided using tetrahedral grid using k-e turbulence models for pressure export boundary condition, after calculating convergence, is obtained
Mixer rice font distributor downstream different distance lateral cross section oxygen concentration distribution map, is shown in Fig. 3, from the figure 3, it may be seen that with mixing
The growth of distance, the concentration of oxygen side is reduced with deviation, in round distribution ring downstream 500mm distances, oxygen concentration it is equal
Side has been less than 0.04 with deviation.
By embodiment 1 and comparative example comparison it is found that under same feed conditions, using the present invention, circulating air and oxygen
Being blended in shorter distance can mix.
Claims (8)
1. the end of the static mixer of a kind of ethylene and oxygen, including ethylene main pipeline, ethylene main pipeline is connected to mixing chamber, mix
Several oxygen spiral distribution pipes of indoor deployments are closed, oxygen channel enters ethylene main pipeline center from side, into oxygen distributor,
Oxygen enters spiral distribution pipe by distributor, and spiral distribution pipe plane is vertical with ethylene flow direction, each spiral distribution pipe
On be uniformly distributed several oxygen jets, nozzle direction is consistent with ethylene flow direction.
2. the static mixer of ethylene and oxygen according to claim 1, it is characterised in that spiral distribution pipe has 2-6, point
With 9~30m/s of flow velocity position in ring.
3. the static mixer of ethylene and oxygen according to claim 1, it is characterised in that each spiral distribution pipe is being responsible for
Sectional uniform is arranged symmetrically.
4. the static mixer of ethylene and oxygen according to claim 1, it is characterised in that all spiral distribution pipes are arranged in
One plane.
5. the static mixer of ethylene and oxygen according to claim 1, it is characterised in that the nozzle in round distribution ring is straight
Diameter is 5~10 millimeters, and nozzle velocity is 32~64m/s.
6. the static mixer of ethylene and oxygen according to claim 1, it is characterised in that injector spacing is the 3 of nozzle diameter
~15 times.
7. the static mixer of ethylene and oxygen according to claim 1, it is characterised in that each distribution pipe top nozzle is opened
Hole direction is consistent with alkene flow direction.
8. the static mixer of ethylene and oxygen according to claim 1, it is characterised in that the diameter of oxygen distributor compares oxygen
Minimum high 2 grades of the diameter of feed channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810017945.2A CN108295689B (en) | 2018-01-09 | 2018-01-09 | Static mixer for ethylene and oxygen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810017945.2A CN108295689B (en) | 2018-01-09 | 2018-01-09 | Static mixer for ethylene and oxygen |
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| Publication Number | Publication Date |
|---|---|
| CN108295689A true CN108295689A (en) | 2018-07-20 |
| CN108295689B CN108295689B (en) | 2020-12-01 |
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ID=62868799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810017945.2A Active CN108295689B (en) | 2018-01-09 | 2018-01-09 | Static mixer for ethylene and oxygen |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026100A (en) * | 2019-05-16 | 2019-07-19 | 北京钢元工程技术有限公司 | A kind of fluid uniform mixing device |
| CN111068536A (en) * | 2019-12-12 | 2020-04-28 | 陕西航天机电环境工程设计院有限责任公司 | Pipeline mixer |
| CN112127191A (en) * | 2020-09-28 | 2020-12-25 | 新晃县自强纸业有限责任公司 | Conveying pipeline for producing corrugated medium paper by using waste paper box |
| CN112211019A (en) * | 2020-09-28 | 2021-01-12 | 新晃县自强纸业有限责任公司 | Method for producing corrugated medium paper by using waste paper box |
| CN115155351A (en) * | 2022-06-10 | 2022-10-11 | 中国石油化工股份有限公司 | Mixer for mixing ethylene and oxygen |
| CN115155353A (en) * | 2022-06-10 | 2022-10-11 | 中国石油化工股份有限公司 | A blender for mixing ethylene and oxygen |
| CN115155349A (en) * | 2022-06-10 | 2022-10-11 | 中国石油化工股份有限公司 | Ethylene and oxygen mixer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0761298A2 (en) * | 1995-08-24 | 1997-03-12 | Praxair Technology, Inc. | Sparger for direct oxygen injection into a reactant stream for a fluidized bed reactor |
| CN1208729A (en) * | 1997-06-19 | 1999-02-24 | 普拉塞尔技术有限公司 | Method and apparatus for direct oxygen injection with reactant stream into fluidized bed reactor |
-
2018
- 2018-01-09 CN CN201810017945.2A patent/CN108295689B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0761298A2 (en) * | 1995-08-24 | 1997-03-12 | Praxair Technology, Inc. | Sparger for direct oxygen injection into a reactant stream for a fluidized bed reactor |
| CN1208729A (en) * | 1997-06-19 | 1999-02-24 | 普拉塞尔技术有限公司 | Method and apparatus for direct oxygen injection with reactant stream into fluidized bed reactor |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110026100A (en) * | 2019-05-16 | 2019-07-19 | 北京钢元工程技术有限公司 | A kind of fluid uniform mixing device |
| CN111068536A (en) * | 2019-12-12 | 2020-04-28 | 陕西航天机电环境工程设计院有限责任公司 | Pipeline mixer |
| CN111068536B (en) * | 2019-12-12 | 2022-03-01 | 陕西航天机电环境工程设计院有限责任公司 | Pipeline mixer |
| CN112127191A (en) * | 2020-09-28 | 2020-12-25 | 新晃县自强纸业有限责任公司 | Conveying pipeline for producing corrugated medium paper by using waste paper box |
| CN112211019A (en) * | 2020-09-28 | 2021-01-12 | 新晃县自强纸业有限责任公司 | Method for producing corrugated medium paper by using waste paper box |
| CN115155351A (en) * | 2022-06-10 | 2022-10-11 | 中国石油化工股份有限公司 | Mixer for mixing ethylene and oxygen |
| CN115155353A (en) * | 2022-06-10 | 2022-10-11 | 中国石油化工股份有限公司 | A blender for mixing ethylene and oxygen |
| CN115155349A (en) * | 2022-06-10 | 2022-10-11 | 中国石油化工股份有限公司 | Ethylene and oxygen mixer |
| CN115155351B (en) * | 2022-06-10 | 2023-11-03 | 中国石油化工股份有限公司 | Mixer for mixing ethylene and oxygen |
| CN115155349B (en) * | 2022-06-10 | 2023-11-03 | 中国石油化工股份有限公司 | Ethylene and oxygen mixer |
| CN115155353B (en) * | 2022-06-10 | 2023-11-24 | 中国石油化工股份有限公司 | Mixer for mixing ethylene and oxygen |
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|---|---|
| CN108295689B (en) | 2020-12-01 |
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