CN105879790A - Novel HPPO reactor - Google Patents
Novel HPPO reactor Download PDFInfo
- Publication number
- CN105879790A CN105879790A CN201610392557.3A CN201610392557A CN105879790A CN 105879790 A CN105879790 A CN 105879790A CN 201610392557 A CN201610392557 A CN 201610392557A CN 105879790 A CN105879790 A CN 105879790A
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- reactor
- hppo
- heat exchanger
- exchanger plates
- cooling water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/0242—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid flow within the bed being predominantly vertical
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/0285—Heating or cooling the reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/00106—Controlling the temperature by indirect heat exchange
- B01J2208/00115—Controlling the temperature by indirect heat exchange with heat exchange elements inside the bed of solid particles
- B01J2208/0015—Plates; Cylinders
- B01J2208/00159—Radially arranged plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/02—Processes carried out in the presence of solid particles; Reactors therefor with stationary particles
- B01J2208/023—Details
- B01J2208/024—Particulate material
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
The invention relates to a novel HPPO reactor which comprises an upper sealing head, a lower sealing head, a shell and a heat exchange assembly. The heat exchange assembly comprises a heat exchange plate pair and a cooling water pipeline. The heat exchange plate pair is arranged in parallel and welded to the cooling water pipeline externally communicated with the shell of the reactor. The heat exchange plate pair forms a closed plate process cavity by welding two metal sheets. The surfaces of the sheets are fluctuated. According to the HPPO reactor, the heat exchange pair can improve heat transfer coefficients of materials on the two sides from two aspects, wherein on one hand, welding spots inside the plate process directly break and disturb the flow pattern of fluid, and water convective heat transfer is reinforced; on the other hand, the plate process and the wall of the sheets of a shell pass are corrugated, due to the shape, material media can achieve the turbulent flow status at the lower flow rate, a boundary layer is not likely to be formed, and the boundary layer is a main heat resistor in the heat transfer process.
Description
Technical field
The present invention relates to prepare the reactor of expoxy propane with hydrogen peroxide oxidation propylene.
Background technology
Expoxy propane is important industrial chemicals, and its traditional production method has chlorohydrination, indirect oxidation method (cooxidation
Method) and cumene method, but this type of method has use toxic raw materials, complex process and pollutes the shortcomings such as environment.Use hydrogen peroxide
Propylene oxide prepares the method (being called for short HPPO reaction) of expoxy propane, and its raw material is hydrogen peroxide and propylene, and product is expoxy propane
And water, solvent is methanol, and course of reaction by-product is few, pollution-free, and later separation purge process is simple, is the most extensively closed
Note.
The feature that HPPO reaction has that thermal discharge is big, is swift in response, temperature is sensitive and cooling water inflow is big.Based on different series
Catalyst, HPPO reaction thermal discharge be 700~1400MJ/h/m3, suitable reaction temperature at 30~60 DEG C, required cooling water
Amount is 10~30 times of reaction mass flow, coolant water temperature 30~40 DEG C.Owing to cooling water is less with the temperature difference of reaction mass, and
Reaction side material flow is slow, and heat transfer coefficient is low, therefore it is required that the heat-transfer capability of reactor is strong.
Patent No. " CN 104841339 A ", Application No. " 201510180542.6 ", entitled " one is used for synthesizing
The novel hydrogenation reactor of gas preparing ethylene glycol technique " a kind of novel the adding for synthesis gas preparing ethylene glycol technique of disclosure of the invention
Hydrogen reactor, this reactor includes that shell of reactor, heat exchanger plates halved tie, cooling medium distribution header and arm, cooling medium are received
Collection house steward and arm;Being provided with cooling medium entrance bottom described shell of reactor, top is provided with cooling medium outlet, described
Cooling medium distribution header and the cooling medium entrance of arm coupled reaction device shell are passed through in heat exchanger plates halved tie one end, and the other end leads to
The cooling medium outlet of supercooling medium collection house steward and arm coupled reaction device shell.Described heat exchanger plates halved tie is changed by multiple
Hot plate is to composition, and each heat exchanger plates is internally plate journey, adjacent heat exchanger plates between loading catalyst, for shell side, dimethyl oxalate. and
Hydrogen feed gas walks shell side after entering reactor, and generates ethylene glycol through catalyst reaction, cools down fluid limp journey, takes away
Reaction liberated heat.But its inferior position is as follows: tube wall is smooth and straight, cooling water side and reaction mass side are all easily formed border
Layer, heat transfer efficiency is low;Restriction due to tube pitch, it is impossible to reach to increase the purpose of water side heat transfer coefficient by increasing water flow velocity;
Because thermal discharge is big and temperature is sensitive, the most often select less caliber, cause wall effect to increase, the inequality of Catalyst packing
Even property increases.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, it is provided that the reactor that a kind of heat transfer efficiency is high.
For reaching object above, the invention provides a kind of HPPO novel reactor, including upper cover, low head, housing
And heat-exchanging component, described heat-exchanging component includes heat exchanger plates pair, and heat exchanger plates is to arranged in parallel, and heat exchanger plates internally forms cooling water pipe
Road, the cooling water pipe of heat exchanger plates pair connection external with reactor enclosure welds;Described heat exchanger plates passes through by two metal sheets
Welding forms an airtight plate journey cavity, the concavo-convex fluctuating of described sheet surface.
The plate that concave-convex surface rises and falls makes the popular upset of fluid in plate journey, strengthens the convection heat transfer' heat-transfer by convection of water.And plate journey and
The plate of shell side makes material medium just can reach turbulence state under less flow velocity, is not easily formed boundary region, and boundary region
It it is the dominant thermal resistance in diabatic process.The mode of surface irregularity is means conventional in field.
Preferably, described metal sheet rule of surface ground distribution solder joint.
Preferably, described heat exchanger plates between be filled with catalyst, the porcelain ball of catalyst lower end place mat different size, porcelain
Ball fills up low head space, and tile the porcelain ball of certain thickness different size equally in catalyst upper end.
Preferably, the particle diameter of little porcelain ball is compared with the particle diameter of catalyst quite or slightly larger.
Preferably, the upper end silk screen and the grid that are layed in the big porcelain ball of catalyst upper end are fixed.
Above-mentioned Catalyst packing heat exchanger plates between, the porcelain ball of catalyst lower end place mat different size, porcelain ball fills up down
All spaces of end socket, first fill out big porcelain ball, play a supporting role, after fill little porcelain ball, the particle diameter of little porcelain ball is compared with the particle diameter of catalyst
Quite or slightly larger, prevent catalyst from leaking in porcelain ball space.Tile the porcelain of certain thickness different size equally in catalyst upper end
Ball, first spreads little porcelain ball, the big porcelain ball of rear paving.Big porcelain ball upper end is fixed with silk screen and grid respectively.
Preferably, described heat exchanger plates between thermocouple group is set, thermocouple group is vertically placed or horizontal mode;Thermoelectricity
When even group is vertically placed, thermocouple sheath inserts from upper cover;During thermocouple group horizontal positioned, thermocouple sheath is from reactor cylinder
Wall inserts.
Plate between thermocouple group is set, for measuring the temperature of beds.Thermocouple group can vertically place or
Horizontal positioned, when vertically placing, thermocouple sheath inserts from upper cover;During horizontal positioned, thermocouple sheath is from reactor barrel
Insert.Reaction heat galvanic couple group comprises multiple thermocouple, measures the temperature of reactor differing heights and varying level position respectively
Temperature.
Preferably, the spacing of heat exchanger plates pair is between 10~50mm.
Depending on the area of heat exchanger plates pair is according to exothermic heat of reaction and heat transfer coefficient, plate to spacing between 10~50mm.
Preferably, described upper cover arranges material outlet, relief valve and manhole, and low head arranges material inlet and discharging
Mouthful;Cooling water inlet and coolant outlet, cooling water inlet is had to be connected with distribution pipe, cooling water distribution arrived in reactor shell
In heat exchange plate.
Upper cover arranges relief valve, when preventing over-temp and over-pressure, and material blast or leakage.
Low head is arranged discharge port, porcelain ball and catalyst and is drawn off by discharge port.
Filter frame is set in material inlet, prevents porcelain ball and catalyst from entering pipeline.
Preferably, in described material inlet, filter frame is set.
Preferably, described housing arranges expansion joint.
The HPPO reactor of the present invention, heat exchanger plates to improving the heat transfer coefficient of both sides material in terms of two, a side
Face is that the flow pattern of solder joint convection cell directly plays destruction upset effect in plate journey, strengthens the convection heat transfer' heat-transfer by convection of water, is on the other hand plate journey
Being all rough with the plate wall of shell side, this is shaped such that material medium just can reach turbulent flow under less flow velocity
State, is not easily formed boundary region, and boundary region is dominant thermal resistance in diabatic process.
Owing to the cooling water inflow needed for this reactor is very big, the mode being combined with arm according to house steward, then select
The arm of DN15~DN28, a plate needs 5~10 arms could meet output, causes comb, welding, catalyst
The series of problems such as filling.Therefore the new technique using house steward directly to weld with plate, the situation that the water yield is big can be met, structure is the simplest
Single, its house steward can be found in the patent in background technology with the combination of arm.
Need not in this reactor liquid distribution trough is installed.On the one hand being because reactant is liquid, and flow velocity is the most slow
Slowly, in reactant liquor, there is not the phenomenon of skewness in catalyst soak;On the other hand the porcelain ball being because in low head is not only
Play the fixing effect supporting catalyst, also act as the effect of reaction mass flow-disturbing distribution.
Compared with prior art, the invention have the advantages that
One, heat is removed soon.Heat exchanger plates, to surface irregularity, enhances the convection heat transfer' heat-transfer by convection of two side liquids;Can basis
Thermal discharge and the requirement of temperature range, the spacing of any adjustable plate pair, pad density and concave-convex surface amplitude so that reaction heat
Quickly removing, course of reaction is stable, and properties of product are stable, catalyst life.
Two, cooling water pipe and plate meet to new type of attachment that the water yield is big and the requirement of simple in construction simultaneously.At total water
Direct opening and the plate new model to welding on pipe, can save deep-rooted a large amount of arms, reduces welding capacity and corruption
The follow-up contingent problems such as erosion fracture, and reserve sufficient space to Catalyst packing.
Three, the volume of this novel reactor is relatively small, beneficially equipment enlarging.Due to manufacture requirements such as tube pitches,
The Catalyst packing rate of shell and tube reactor is typically not greater than 50%, and the Catalyst packing rate of this novel reactor can reach
60%~80%, reactor volume is greatly reduced, and is conducive to improving separate unit reactor output, beneficially equipment enlarging.
Four, Catalyst packing is easy and the most closely knit.In shell and tube reactor, reaction compartment is divided into thousands of circles
Column type local space, in this HPPO novel reactor, heat exchanger plates is wide contour to reaction compartment is divided into tens or hundreds of
Local space, and space is the fewest more big, and wall effect is the most inconspicuous, is more difficult to put up a bridge during Catalyst packing, and filling is more
The most closely knit.
Accompanying drawing explanation
Fig. 1 is HPPO novel reactor sectional view of the present invention;
Fig. 2 is heat-exchanging component shaft side figure in the present invention;
Fig. 3 be in the present invention heat exchanger plates to front view;
Wherein:
1-material inlet 2-material outlet 3-housing
4-cooling water inlet 5-coolant outlet 6-distributes pipe
7-cooling water collection pipe 8-heat exchanger plates is to 9-relief valve
10-discharge port 11-filter frame 12-solder joint
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
A kind of HPPO novel reactor as shown in Figure 1 to Figure 3, this reactor includes upper cover, low head, housing 3 and
Heat-exchanging components etc., heat-exchanging component includes that heat exchanger plates is to 8 and cooling water pipeline.Catalyst packing is also fixed on heat exchanger plates between 8.
Upper cover arranges material outlet 2, relief valve 9 and manhole.Above-mentioned upper cover arranges relief valve, and when preventing over-temp and over-pressure, material is quick-fried
Explode or leakage.Low head arranges material inlet 1 and discharge port 10.It is logical that above-mentioned low head arranges discharge port 10, porcelain ball and catalyst
Cross discharge port 10 to draw off, filter frame 11 is set in low head material inlet, prevent porcelain ball and catalyst from entering pipeline.Housing 3 times
There is cooling water inlet 4 side, and there is coolant outlet 5 top, and housing 3 arranges expansion joint.Liquid reactants from premixer
Enter reactor from reactor bottom material inlet 1, react at beds;Cooling water cools down water from reactor lower part
The water pipe of entrance 4 enters, cooling water distribution pipe 6 be distributed to each heat exchanger plates in 8, with reaction mass Cheng Bingliu heat exchange.
Above-mentioned heat exchanger plates is formed an airtight plate journey cavity by two metal sheets by welding to 8, and plate has rule
Then it is distributed solder joint 12 so that the concavo-convex fluctuating of sheet surface.Heat exchanger plates is arranged in parallel to 8, cold with connect outside reactor shell 3
But water pipe directly welds.Heat exchanger plates, to loading catalyst between 8, passes through for reaction mass, and heat exchanger plates then leads to for cooling water in 8
Road.Heat exchanger plates to 8 area according to exothermic heat of reaction and heat transfer coefficient depending on, plate to spacing between 10~50mm.
Above-mentioned Catalyst packing is between heat exchanger plates is to 8, and the porcelain ball of catalyst lower end place mat different size, porcelain ball fills up down
All spaces of end socket, first fill out big porcelain ball, play a supporting role, after fill little porcelain ball, the particle diameter of little porcelain ball is compared with the particle diameter of catalyst
Quite or slightly larger, prevent catalyst from leaking in porcelain ball space.Tile the porcelain of certain thickness different size equally in catalyst upper end
Ball, first spreads little porcelain ball, the big porcelain ball of rear paving.Big porcelain ball upper end is fixed with silk screen and grid respectively.
Above-mentioned plate between thermocouple group is set, for measuring the temperature of beds.Thermocouple group can vertically be put
Putting or horizontal positioned, when vertically placing, thermocouple sheath inserts from upper cover;During horizontal positioned, thermocouple sheath is from reactor
Barrel inserts.Reaction heat galvanic couple group comprises multiple thermocouple, measures temperature and the varying level position of reactor differing heights respectively
The temperature put.
Above-mentioned operation principle:
Above-mentioned heat exchanger plates, to 8 heat transfer coefficients that can improve both sides material in terms of two, is on the one hand weldering in plate journey
The flow pattern of point 12 convection cells directly plays destruction upset effect, strengthens the convection heat transfer' heat-transfer by convection of water, is on the other hand the plate of plate journey and shell side
Sheet wall is all rough, and this is shaped such that material medium just can reach turbulence state under less flow velocity, is difficult to
Form boundary region, and boundary region is dominant thermal resistance in diabatic process.
Owing to the cooling water inflow needed for this reactor is very big, the mode being combined with arm according to house steward, then select
The arm of DN15~DN28, a plate needs 5~10 arms could meet output, causes comb, welding, catalyst
The series of problems such as filling.Therefore the new technique using house steward directly to weld with plate, the situation that the water yield is big can be met, structure is the simplest
Single.
Need not in this reactor liquid distribution trough is installed.On the one hand being because reactant is liquid, and flow velocity is the most slow
Slowly, in reactant liquor, there is not the phenomenon of skewness in catalyst soak;On the other hand the porcelain ball being because in low head is not only
Play the fixing effect supporting catalyst, also act as the effect of reaction mass flow-disturbing distribution.
Below preferred embodiment to the invention is illustrated, but the invention is not limited to described
Embodiment, those of ordinary skill in the art can also make all equivalents on the premise of the invention spirit
Modification or replacement, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (10)
1. a HPPO novel reactor, it is characterised in that include upper cover, low head, housing and heat-exchanging component, described changes
Hot assembly includes heat exchanger plates pair, and heat exchanger plates is to arranged in parallel, and heat exchanger plates internally forms cooling water pipeline, heat exchanger plates pair and reactor
The cooling water pipe welding of connection outside housing;Described heat exchanger plates forms an airtight plate to by two metal sheets by welding
Journey cavity, the concavo-convex fluctuating of described sheet surface.
HPPO novel reactor the most according to claim 1, it is characterised in that described metal sheet rule of surface ground point
Cloth solder joint.
HPPO novel reactor the most according to claim 1 and 2, it is characterised in that described heat exchanger plates between load
Having catalyst, the porcelain ball of catalyst lower end place mat different size, porcelain ball fills up low head space, and catalyst upper end tiles one equally
Determine the porcelain ball of the different size of thickness.
HPPO novel reactor the most according to claim 3, it is characterised in that the particle diameter of little porcelain ball is compared with the particle diameter of catalyst
Quite or slightly larger.
HPPO novel reactor the most according to claim 3, it is characterised in that be layed in the big porcelain ball of catalyst upper end
Upper end silk screen and grid are fixed.
HPPO novel reactor the most according to claim 1 and 2, it is characterised in that described heat exchanger plates between arrange
Thermocouple group, thermocouple group is vertically placed or horizontal mode;When thermocouple group is vertically placed, thermocouple sheath is inserted from upper cover
Enter;During thermocouple group horizontal positioned, thermocouple sheath inserts from reactor barrel.
HPPO novel reactor the most according to claim 1 and 2, it is characterised in that the spacing of heat exchanger plates pair 10~
Between 50mm.
HPPO novel reactor the most according to claim 1 and 2, it is characterised in that described upper cover arranges material and goes out
Mouth, relief valve and manhole, low head arranges material inlet and discharge port;Cooling water inlet and cooling water is had to go out in reactor shell
Mouthful, cooling water inlet is connected with distribution pipe, by cooling water distribution to heat exchange plate.
HPPO novel reactor the most according to claim 8, it is characterised in that in described material inlet, filtration is set
Frame.
HPPO novel reactor the most according to claim 1 and 2, it is characterised in that on described housing, expansion is set
Joint.
Priority Applications (1)
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CN201610392557.3A CN105879790A (en) | 2016-06-06 | 2016-06-06 | Novel HPPO reactor |
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CN201610392557.3A CN105879790A (en) | 2016-06-06 | 2016-06-06 | Novel HPPO reactor |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107243297A (en) * | 2017-07-24 | 2017-10-13 | 德艾柯工程技术(上海)有限公司 | A kind of board-like modularization temperature control reactor |
CN107376792A (en) * | 2017-08-01 | 2017-11-24 | 中国石油化工股份有限公司 | Efficient HPPO device reaction device equipment |
CN109382045A (en) * | 2018-04-03 | 2019-02-26 | 青岛科大隆腾科技发展有限公司 | A kind of spiral plate fixed bed reactors of gas-solid contact catalysis reaction |
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CN101554572A (en) * | 2009-05-15 | 2009-10-14 | 新奥新能(北京)科技有限公司 | Methane synthesis reactor |
CN202516536U (en) * | 2011-12-29 | 2012-11-07 | 山东齐鲁科力化工研究院有限公司 | Shift-converter with built-in cold wall |
CN104841339A (en) * | 2015-04-16 | 2015-08-19 | 中国五环工程有限公司 | Novel hydrogenation reactor for synthesis gas-to-ethylene glycol process |
CN105080433A (en) * | 2015-09-02 | 2015-11-25 | 德艾柯工程技术(上海)有限公司 | Novel plate-type axial reactor |
CN105107434A (en) * | 2015-09-02 | 2015-12-02 | 李东儒 | Novel reactor for preparing epoxy propane by oxidizing propylene with hydrogen peroxide |
CN205833122U (en) * | 2016-06-06 | 2016-12-28 | 江苏怡达化学股份有限公司 | A kind of HPPO novel reactor |
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2016
- 2016-06-06 CN CN201610392557.3A patent/CN105879790A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN101554572A (en) * | 2009-05-15 | 2009-10-14 | 新奥新能(北京)科技有限公司 | Methane synthesis reactor |
CN202516536U (en) * | 2011-12-29 | 2012-11-07 | 山东齐鲁科力化工研究院有限公司 | Shift-converter with built-in cold wall |
CN104841339A (en) * | 2015-04-16 | 2015-08-19 | 中国五环工程有限公司 | Novel hydrogenation reactor for synthesis gas-to-ethylene glycol process |
CN105080433A (en) * | 2015-09-02 | 2015-11-25 | 德艾柯工程技术(上海)有限公司 | Novel plate-type axial reactor |
CN105107434A (en) * | 2015-09-02 | 2015-12-02 | 李东儒 | Novel reactor for preparing epoxy propane by oxidizing propylene with hydrogen peroxide |
CN205833122U (en) * | 2016-06-06 | 2016-12-28 | 江苏怡达化学股份有限公司 | A kind of HPPO novel reactor |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107243297A (en) * | 2017-07-24 | 2017-10-13 | 德艾柯工程技术(上海)有限公司 | A kind of board-like modularization temperature control reactor |
CN107376792A (en) * | 2017-08-01 | 2017-11-24 | 中国石油化工股份有限公司 | Efficient HPPO device reaction device equipment |
CN107376792B (en) * | 2017-08-01 | 2020-10-16 | 中国石油化工股份有限公司 | High-efficiency HPPO device reactor equipment |
CN109382045A (en) * | 2018-04-03 | 2019-02-26 | 青岛科大隆腾科技发展有限公司 | A kind of spiral plate fixed bed reactors of gas-solid contact catalysis reaction |
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