CN207463190U - gas distributor and three phase slurry bed reactor - Google Patents
gas distributor and three phase slurry bed reactor Download PDFInfo
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- CN207463190U CN207463190U CN201721440341.6U CN201721440341U CN207463190U CN 207463190 U CN207463190 U CN 207463190U CN 201721440341 U CN201721440341 U CN 201721440341U CN 207463190 U CN207463190 U CN 207463190U
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Abstract
The utility model belongs to technical field of chemical, and in particular to a kind of gas distributor and three phase slurry bed reactor.The gas distributor of the utility model, including air inlet pipe, more gas distribution arms, multigroup gas distribution gentle body jet pipe of endless tube；One end of gas distribution arms is cecum, and the other end is connected with air inlet pipe, and the both ends of gas distribution endless tube are connect respectively with two gas distribution arms；Multiple gas vents are both provided on gas distribution arms and gas distribution rings pipe, the gas spray pipe that Open Side Down is connected on gas vent, gas spray pipe externally protrudes out in the outer wall of gas distribution arms and gas distribution rings pipe respectively.The utility model is simple and reasonable, is easily installed manufacture, effectively alleviate existing gas distributor existing for gas be unevenly distributed, reactor bottom catalyst deposit and stream pressure it is unstable or gas supply interrupt when catalyst blockage gas distributor the problems such as.
Description
Technical field
The utility model belongs to technical field of chemical more particularly to a kind of gas distributor and three phase slurry bed is anti-
Answer device.
Background technology
Catalyst is dispersed in atent solvent or reaction mass by gas-liquid-solid three-phase paste state bed reactor to react
A kind of device.In the reactor, in order to realize the good distribution of reactant concentration, catalyst concn and bed layer pressure and temperature,
Feed gas and the solid catalyst being suspended in slurries need to keep good to contact to avoid going out for bias current, channeling
It is existing, therefore whether the distribution of feed gas is uniformly very big to the stability influence of gas-liquid-solid three-phase paste state bed reactor operation.Into
Material distributor is the important component of paste state bed reactor, any one paste state bed reactor is both needed to ensure by feed distributor
The good contact of gas-liquid-solid three-phase, to improve product yield and ensure that catalyst is in good flow regime.Existing slurry
Gas distributor abacus formula distributor, filled type distributor, sintered metal plates distributor, nozzle point used by bed reactor
A variety of patterns such as cloth device and pipe distributor.
The patent of Publication No. CN1600413A discloses a kind of gas distributor for three phase slurry bed reactor, should
Distributor is gas distribution tube group by more vapor risers by one gas chamber of the false plate structure identical with reactor inside diameter
It supplies, there is the nozzles of multiple openings vertically downward in gas distribution tube group.The gas distributor can reduce reactor bottom catalysis
The deposition of agent, but cannot preferably solve the problems, such as that gas is uniformly distributed in reactor.
The patent of Publication No. CN105056844A discloses a kind of gas distributor of producing ethylene with acetylene hydrogenation slurry bed system
And its application, the distributor form gas chamber by partition board and reactor end socket, are gas by the vapor riser installed on partition board
Distributor supplies, and gas distributor is that two groups of diagonal cross, place plane and the angle between horizontal plane are that acute angle, center connect
The nozzle for being oliquely downward open and being open vertically downward is distributed in gas distribution tube group for gas distribution tube group.The gas is distributed
Device can realize that gas is uniformly distributed in reactor, but cannot preferably solve the problems, such as the deposition of reactor bottom catalyst.
The patent of Publication No. CN104826558A discloses a kind of slurry bed system for preparing ethylene by selective hydrogenation of acetylene
Reactor and reaction system, the lower section setting gas distributor of the paste state bed reactor, which is gas by central airway
Body distributor supplies, and gas distributor includes multiple annular concentric gas distribution tubes in same level, annular gas
Distributor pipe bottom opening.The gas distributor can realize that gas is uniformly distributed in reactor, but cannot preferably solve air-flow
When pressure transient or gas supply interrupt the problem of catalyst blockage gas distributor stomata.
In consideration of it, special propose the utility model.
Utility model content
The first of the utility model is designed to provide a kind of gas distributor, exists to alleviate existing gas distributor
Gas be unevenly distributed, reactor bottom catalyst deposit and stream pressure it is unstable or gas supply interrupt when catalyst block up
The problems such as filling in gas distributor.
The second of the utility model is designed to provide a kind of three phase slurry bed reaction including the gas distributor
Device, it is simple and reasonable, manufacture is easily installed, gas is evenly distributed, and can effectively avoid catalyst in the heavy of reactor bottom
Product, slows down abrasion of the catalyst in bottom wall, and blocking, adverse current etc. when can effectively prevent unstable stream pressure or gas supply stage casing
Problem.
To achieve the above object, the technical solution adopted in the utility model is：
One side according to the present utility model, the utility model provide a kind of gas distributor, including air inlet pipe, more
Gas distribution arms, multigroup gas distribution gentle body jet pipe of endless tube；
One end of the gas distribution arms is cecum, and the other end is connected with the air inlet pipe, and the gas is distributed endless tube
Both ends connect respectively with two gas distribution arms；
Multiple gas vents are both provided on the gas distribution arms and gas distribution rings pipe, are connected on the gas vent
The gas spray pipe that Open Side Down, the gas spray pipe externally protrude out in the outer of the gas distribution arms and gas distribution rings pipe respectively
Wall.
As further preferred technical solution, the end of the gas spray pipe is equipped with extension diameter section and undergauge section from top to bottom,
The extension diameter section includes expansion segment and big straight pipe, and the undergauge section includes contraction section and small straight pipe.
As further preferred technical solution, 1.5~3 times of a diameter of gas spray pipe diameter of the big straight pipe；Institute
State the 1/3~2/3 of a diameter of gas spray pipe diameter of small straight pipe.
As further preferred technical solution, the level interval of the two neighboring gas spray pipe is small straight pipe diameter
2~8 times.
As further preferred technical solution, the gas distribution arms are the bend pipe with certain curvature, described in more
Gas distribution arms are arranged on centered on the air inlet pipe around the air inlet pipe；
The bending angle of the more gas distribution arms is identical；
The quantity of the gas distribution arms is 2~8.
As further preferred technical solution, gas distribution endless tube described in every group includes multiple gases and is distributed endless tube, multiple
The gas distribution endless tube is connected to multiple body distribution arms, multigroup gas distribution circular pipe type in the form of circular ring shape
Into multiple concentric circles；
The horizontal interval of gas distribution endless tube described in two adjacent groups is distributed 2~8 times of loop diameter for the gas；
The quantity of the gas distribution endless tube is 2~8 groups, and every group of gas included is distributed the number of endless tube and the gas
The radical of distribution arms is corresponding.
Other side according to the present utility model, the utility model also provide a kind of three phase slurry bed reactor, including
Above-mentioned gas distributor, the gas distributor are arranged in three phase slurry bed reactor bottom end socket.
As further preferred technical solution, the gas distributor is fixed on by support plate on the inner wall of reactor.
As further preferred technical solution, the shape of the gas distribution arms and the inner surface of reactor bottom end socket
Shape be adapted.
As further preferred technical solution, inner surface and the gas of the three phase slurry bed reactor bottom end socket
The distance most nearby of distributor is 2~5 times of gas spray pipe length.
Compared with prior art, the beneficial effects of the utility model are：
1st, gas distributor provided by the utility model, there is provided more interconnected gas distribution arms and multigroup gas
Body is distributed endless tube, and is respectively provided with multiple gas spray pipes in gas distribution arms and gas distribution rings pipe, expands gearing oneself
By spending, ensure that the back pressure of each jet pipe gas outlet is consistent with flow so that gas distribution is more uniform.
2nd, gas distributor is arranged in the bottom bulkhead of reactor, and the shape of distributor and end socket are same or like,
Deposition of the catalyst in reactor bottom is avoided, slows down the abrasion of catalyst, ensures that catalyst is in good suspension
State.
3rd, the gas distribution direction of gas spray pipe is downward, and pressure is reasonably distributed, and is conducive to the pressure drop for making distributor and flow is steady
It is fixed, it is not susceptible to catalyst blockage and slurries flows backwards phenomenon.
4th, it is simple and reasonable, it is compact to design, manufacture and maintenance are easily installed, can be widely applied to petrochemical industry and environmental protection
The fields of grade.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution of the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be the utility model some embodiments, for those of ordinary skill in the art, do not paying creativeness
Under the premise of labour, other attached drawings are can also be obtained according to these attached drawings.
Fig. 1 is the gas distributor structure diagram that the utility model embodiment provides；
Fig. 2 is the E-E directions schematic cross-section in Fig. 1；
Fig. 3 is the gas distributor schematic top plan view that the utility model embodiment provides；
Fig. 4 is the gas spray pipe structure diagram that the utility model embodiment provides.
Icon：1- air inlet pipe；2- reactors；3- gas distribution arms；4- gas spray pipes；5- gases are distributed endless tube；
6- support plates；7- air inlet pipe bottom bulkheads；A- gases are distributed the horizontal interval of endless tube；B- gas spray pipe calibers；C- is straight greatly
Pipeline section diameter；The small straight pipe diameters of D-.
Specific embodiment
The technical solution of the utility model is clearly and completely described below, it is clear that described embodiment is this
Utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, the common skill in this field
Art personnel all other embodiments obtained without making creative work belong to the utility model protection
Range.
In the description of the present invention, it should be noted that term " " center ", " on ", " under ", it is "left", "right", " perpendicular
Directly ", the orientation of the instructions such as " level ", " interior ", " outer " or position relationship are based on orientation shown in the drawings or position relationship, are only
The utility model must have specific with the device or element for simplifying description rather than instruction or hint meaning for ease of description
Orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.In addition, term " the
One ", " second ", " third " are only used for description purpose, and it is not intended that instruction or hint relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, can above-mentioned art be understood with concrete condition
Concrete meaning of the language in the utility model.
In a first aspect, present embodiment provides a kind of gas distributor, including air inlet pipe, more gas distribution arms, more
The group gas distribution gentle body jet pipe of endless tube；
One end of the gas distribution arms is cecum, and the other end is connected with the air inlet pipe, and the gas is distributed endless tube
Both ends connect respectively with two gas distribution arms；
Multiple gas vents are both provided on the gas distribution arms and gas distribution rings pipe, are connected on the gas vent
The gas spray pipe that Open Side Down, the gas spray pipe externally protrude out in the outer of the gas distribution arms and gas distribution rings pipe respectively
Wall.
The gas distributor that present embodiment provides, more gas distribution arms are connected with air inlet pipe, gas distribution rings
Pipe is connected between different gas distribution arms, and one end of air inlet pipe is connected with air source, the other end for gas distribution arms and
Gas distribution endless tube gas supply.Gas vent is equipped in gas distribution arms and gas distribution rings pipe, the aperture court of gas vent divides into
It puts, i.e. the gas distribution direction of gas spray pipe is downward.More gas distribution arms, multigroup gas distribution endless tube and the spray of multiple gases
Manage the arrangement being spaced.
In this way, the connection of the gentle body jet pipe of endless tube is distributed by above-mentioned air inlet pipe, more gas distribution arms, multigroup gas
Setting, enables to pressure to be reasonably distributed, gas is more evenly distributed, on this basis it is possible to which catalyst is effectively avoided to react
The deposition of device bottom slows down the abrasion of catalyst, prevents blocking, adverse current of solid etc. when tolerance is reduced or air pressure reduces from asking
Topic.
Further, the end of the gas spray pipe is equipped with extension diameter section and undergauge section from top to bottom, and the extension diameter section includes
Expansion segment and big straight pipe, the undergauge section include contraction section and small straight pipe.
Further, 1.5~3 times of a diameter of gas spray pipe diameter of the big straight pipe；The small straight pipe it is straight
Diameter is the 1/3~2/3 of gas spray pipe diameter.
Further, the level interval of the two neighboring gas spray pipe is 2~8 times of small straight pipe diameter.
On the above embodiment basis, further, the top-down shaft section of extension diameter section is truncated cone
Shape and rectangular shape, the top-down shaft section of undergauge section are rounding frustum shape and rectangular shape.
The gas spray pipe is arranged along the length direction of the gas distribution arms and gas distribution endless tube, each
The central axis of gas spray pipe intersects with the central axis of the gas distribution arms and gas distribution endless tube.
The gas distribution direction of the gas spray pipe is vertically downward.
The level interval of two neighboring gas spray pipe in the gas distribution arms is 2~8 times of small straight pipe diameter.
The level interval of two neighboring gas spray pipe on the gas distribution endless tube is 2~8 times of small straight pipe diameter.
The setting of the structure of gas spray pipe in present embodiment, gas distribution direction is vertically downward, and there is provided extension diameter sections
With undergauge section, help to reduce vortex, the gas for making ejection is more steady, is not susceptible to catalyst blockage and slurries are flow backwards.
Further, the gas distribution arms be the bend pipe with certain curvature, the more gas distribution arms with
It is arranged on centered on the air inlet pipe around the air inlet pipe；
The bending angle of the more gas distribution arms is identical；
The quantity of the gas distribution arms is 2~8.
In present embodiment, depending on the size of the quantity visual response device of gas distribution arms.Between gas distribution arms
Angle of inclination or bending angle are identical.The cross section of gas distribution arms is circle.The shape of the shaft section of gas distribution arms
Shape is corresponding with the inner surface of reactor bottom end socket.
Further, gas distribution endless tube includes multiple gases distribution endless tube, multiple gas distribution rings described in every group
Pipe is connected to multiple body distribution arms in the form of circular ring shape, and multigroup gas is distributed circular pipe type into multiple concentric circles；
The horizontal interval of gas distribution endless tube described in two adjacent groups is distributed 2~8 times of loop diameter for the gas；
The quantity of the gas distribution endless tube is 2~8 groups, and every group of gas included is distributed the number of endless tube and the gas
The radical of distribution arms is corresponding.
In present embodiment, depending on the size of the quantity visual response device of gas distribution endless tube.Each group gas distribution endless tube
It horizontal interval can be equal.Every group of gas distribution endless tube is connected to the gas distribution arms in the form of concentric circles.
The setting of gas distribution arms and gas distribution rings pipe in present embodiment expands the degree of freedom of gearing,
It ensure that the back pressure of each jet pipe gas outlet and the consistency of flow so that gas distribution is more uniform, and application effect is more preferable.
Second aspect, present embodiment also provide a kind of three phase slurry bed reactor, including above-mentioned gas distributor, institute
Gas distributor is stated to be arranged in three phase slurry bed reactor bottom end socket.
In present embodiment, air inlet pipe is out of, side horizontal enters laterally reactor cylinder, by downward elbow
Gas distributor supplies.
Further, the gas distributor is fixed on by support plate on the inner wall of reactor.
The quantity of support plate is depending on the quantity of gas distribution arms.
Further, the shape of the gas distribution arms and the shape of the inner surface of reactor bottom end socket are adapted.
Gas distribution arms be the distribution of shapes of the inner surface formed according to reactor bottom end socket in reactor bottom, one
As be in ellipse arc.
Further, the inner surface of the three phase slurry bed reactor bottom end socket and the gas distributor most nearby
Distance be 2~5 times of gas spray pipe length.
With reference to specific embodiments and the drawings, the utility model is described in further detail.
Embodiment 1
As shown in Figure 1-Figure 3, the present embodiment provides a kind of gas distributor for three phase slurry bed reactor, including
Air inlet pipe 1, more gas distribution arms 3, multigroup gas distribution endless tube 5 and gas spray pipe 4；One end of gas distribution arms 3 is
Cecum, the other end are connected with air inlet pipe 1, and the both ends of gas distribution endless tube 5 are connect respectively with two gas distribution arms 3；Gas
Multiple gas vents are both provided on distribution arms 3 and gas distribution rings pipe 5, the gas spray pipe that Open Side Down is connected on gas vent
4, gas spray pipe 4 externally protrudes out in the outer wall of gas distribution arms 3 and gas distribution rings pipe 5 respectively.
Gas distribution arms 3 in the gas distributor connect with air inlet pipe 1 in ellipse arc and are included in short transverse
Upper spaced apart gas distribution endless tube 5 is fixed on by support plate 6 in the end socket region of reactor 2.Gas distribution arms 3 with
More gas spray pipes 4 vertically downward are connected on gas distribution endless tube 5.
In the present embodiment, the quantity of gas distribution arms 3 is 6, and the group number of gas distribution endless tube 5 is 5 groups, and every group includes
6 gases are distributed endless tube 5.The distance most nearby of 2 end socket inner surface of reactor and gas distributor is 4 length of gas spray pipe
2~5 times.
As shown in figs 2-4, gas distribution endless tube 5 is laid out using concentric circles, and air inlet pipe bottom bulkhead 7 is located at concentric circles
Circle centre position.The horizontal interval A of gas distribution endless tube is 2~8 times that gas is distributed 5 diameter of endless tube.Between the level of gas spray pipe 4
It is divided into 2~8 times of the medium and small straight pipe diameter D of gas spray pipe undergauge section.When admission pressure ensures sufficiently large, gas distribution arms
Gas spray pipe 4 on 3 can be placed equidistant with along the radial direction of reactor 2.Meanwhile caused by during to avoid admission pressure deficiency
Gas is unevenly distributed, and the gas spray pipe 4 in gas distribution arms 3 can carry out Unequal distance setting along the radial direction of reactor 2, i.e.,
Closer to 2 wall of reactor, gas spray pipe 4 is spaced smaller, but must assure that horizontal interval is medium and small straight for gas spray pipe undergauge section
2~8 times of pipeline section diameter D.
As shown in figure 4, gas spray pipe 4 is equipped with extension diameter section and undergauge section.Big straight pipe diameter in the extension diameter section of gas spray pipe 4
C is 1.5~3 times of gas spray pipe caliber B.The medium and small straight pipe diameter D of undergauge section of gas spray pipe 4 is gas spray pipe caliber B's
1/3~2/3.Depending on the quantity visual response condition and reactor condition of gas spray pipe 4.
The operation principle of the gas distributor of the utility model is as follows：
When reactor 2 is in the state of normal work, gas feed enters reactor 2 by air inlet pipe 1, changes through elbow
Gas distributor is flowed downwardly into behind direction.Gas distributor is supported plate 6 and is fixed on 2 inner wall of reactor, has more gases
Distribution arms 3 and multigroup gas distribution endless tube 5, each gas distribution arms 3 and the 5 downward trepanning of gas distribution rings pipe simultaneously connect
There is gas spray pipe 4.Gas feed can rapidly and uniformly be distributed in entire gas distributor, the extension diameter section through gas spray pipe 4
With undergauge section eluting gas distributor.The gas ejected constantly washes away the inner surface of 2 bottom bulkhead of reactor, solves catalysis
Agent ensures that catalyst has good suspended state 2 bottom deposit of reactor the problem of.Simultaneously airflow direction also to flow down
Dynamic change into flows up, and is uniformly distributed in the bottom of entire three phase slurry bed reactor, solves the problems, such as even gas distribution.
When operation fluctuation or driving and parking occurs in reactor 2, Open Side Down and equipped with undergauge section, reduces for gas spray pipe 4
Contact area with slurries, farthest avoids slurries and flows backwards and enter gas spray pipe.Extension diameter section reduces refluence and enters
The flow velocity of the slurries of gas spray pipe 4 farthest avoids slurries and flows backwards into gas distributor.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, those of ordinary skill in the art should
Understand：It can still modify to the technical solution recorded in foregoing embodiments either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacement, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of gas distributor, which is characterized in that including air inlet pipe, more gas distribution arms, multigroup gas distribution endless tube
And gas spray pipe；
One end of the gas distribution arms is cecum, and the other end is connected with the air inlet pipe, the two of the gas distribution endless tube
End is connect respectively with two gas distribution arms；
Multiple gas vents are both provided on the gas distribution arms and gas distribution rings pipe, opening is connected on the gas vent
Downward gas spray pipe, the gas spray pipe externally protrude out in the outer wall of the gas distribution arms and gas distribution rings pipe respectively.
2. gas distributor according to claim 1, which is characterized in that the end of the gas spray pipe is equipped with from top to bottom
Extension diameter section and undergauge section, the extension diameter section include expansion segment and big straight pipe, and the undergauge section includes contraction section and small straight pipe.
3. gas distributor according to claim 2, which is characterized in that a diameter of gas spray pipe of the big straight pipe is straight
1.5~3 times of diameter；The 1/3~2/3 of a diameter of gas spray pipe diameter of the small straight pipe.
4. gas distributor according to claim 2, which is characterized in that the level interval of the two neighboring gas spray pipe
2~8 times for small straight pipe diameter.
5. according to Claims 1 to 4 any one of them gas distributor, which is characterized in that the gas distribution arms are band
There is the bend pipe of certain curvature, the more gas distribution arms are arranged on the week of the air inlet pipe centered on the air inlet pipe
It encloses；
The bending angle of the more gas distribution arms is identical；
The quantity of the gas distribution arms is 2~8.
6. according to Claims 1 to 4 any one of them gas distributor, which is characterized in that gas described in every group is distributed endless tube
Endless tube is distributed including multiple gases, multiple gas distribution endless tubes are connected to multiple body distribution branch in the form of circular ring shape
Pipe, multigroup gas are distributed circular pipe type into multiple concentric circles；
The horizontal interval of gas distribution endless tube described in two adjacent groups is distributed 2~8 times of loop diameter for the gas；
The quantity of the gas distribution endless tube is 2~8 groups, and every group of number of gas distribution endless tube included is distributed with the gas
The radical of branch pipe is corresponding.
7. a kind of three phase slurry bed reactor, which is characterized in that including claim 1~6 any one of them gas distributor,
The gas distributor is arranged in three phase slurry bed reactor bottom end socket.
8. three phase slurry bed reactor according to claim 7, which is characterized in that the gas distributor passes through support plate
It is fixed on the inner wall of reactor.
9. three phase slurry bed reactor according to claim 7, which is characterized in that the shape of the gas distribution arms with
The shape of the inner surface of reactor bottom end socket is adapted.
10. according to claim 7~9 any one of them three phase slurry bed reactor, which is characterized in that the three phase slurry bed
The distance most nearby of the inner surface of reactor bottom end socket and the gas distributor is 2~5 times of gas spray pipe length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721440341.6U CN207463190U (en) | 2017-11-01 | 2017-11-01 | gas distributor and three phase slurry bed reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721440341.6U CN207463190U (en) | 2017-11-01 | 2017-11-01 | gas distributor and three phase slurry bed reactor |
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| Publication Number | Publication Date |
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| CN207463190U true CN207463190U (en) | 2018-06-08 |
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ID=62262510
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108892109A (en) * | 2018-08-03 | 2018-11-27 | 禄丰天宝磷化工有限公司 | A kind of oxide boiling roasting device of production of sulfur from pyrite acid |
| CN109046181A (en) * | 2018-09-18 | 2018-12-21 | 中国恩菲工程技术有限公司 | Combined fluid distributor |
| WO2021198007A1 (en) * | 2020-03-31 | 2021-10-07 | Glatt Ingenieurtechnik Gesellschaft mit beschränkter Haftung | Process gas dividing system and use of the process gas dividing system |
| CN115228383A (en) * | 2022-08-12 | 2022-10-25 | 中化学科学技术研究有限公司 | Device and method for preparing tetrahydrofuran through cyclization of 1, 4-butanediol |
-
2017
- 2017-11-01 CN CN201721440341.6U patent/CN207463190U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108892109A (en) * | 2018-08-03 | 2018-11-27 | 禄丰天宝磷化工有限公司 | A kind of oxide boiling roasting device of production of sulfur from pyrite acid |
| CN109046181A (en) * | 2018-09-18 | 2018-12-21 | 中国恩菲工程技术有限公司 | Combined fluid distributor |
| CN109046181B (en) * | 2018-09-18 | 2023-12-22 | 中国恩菲工程技术有限公司 | Combined fluid distributor |
| WO2021198007A1 (en) * | 2020-03-31 | 2021-10-07 | Glatt Ingenieurtechnik Gesellschaft mit beschränkter Haftung | Process gas dividing system and use of the process gas dividing system |
| CN115228383A (en) * | 2022-08-12 | 2022-10-25 | 中化学科学技术研究有限公司 | Device and method for preparing tetrahydrofuran through cyclization of 1, 4-butanediol |
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