CN114849594A - Catalyst feeding device used in PPC synthesis process - Google Patents
Catalyst feeding device used in PPC synthesis process Download PDFInfo
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- CN114849594A CN114849594A CN202210519468.6A CN202210519468A CN114849594A CN 114849594 A CN114849594 A CN 114849594A CN 202210519468 A CN202210519468 A CN 202210519468A CN 114849594 A CN114849594 A CN 114849594A
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- catalyst
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- vacuum
- buffer tank
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- 239000003054 catalyst Substances 0.000 title claims abstract description 78
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 40
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 229910001347 Stellite Inorganic materials 0.000 claims description 4
- AHICWQREWHDHHF-UHFFFAOYSA-N chromium;cobalt;iron;manganese;methane;molybdenum;nickel;silicon;tungsten Chemical compound C.[Si].[Cr].[Mn].[Fe].[Co].[Ni].[Mo].[W] AHICWQREWHDHHF-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 abstract description 6
- 238000007789 sealing Methods 0.000 abstract description 6
- 238000003756 stirring Methods 0.000 abstract description 6
- 238000007599 discharging Methods 0.000 abstract description 5
- 229920000379 polypropylene carbonate Polymers 0.000 description 18
- 238000004519 manufacturing process Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 238000001035 drying Methods 0.000 description 5
- 238000004321 preservation Methods 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920005630 polypropylene random copolymer Polymers 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- -1 Polypropylene carbonate Polymers 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
-
- 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
- B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
- B01J8/10—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles moved by stirrers or by rotary drums or rotary receptacles or endless belts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
Abstract
A catalyst feeding device used in a PPC synthesis process comprises a synthesis kettle, a buffer tank and a single-cone dryer, wherein the lower end of the single-cone dryer is communicated with the upper end of the buffer tank through a first pipeline, the lower end of the buffer tank is communicated with the upper end of the synthesis kettle through a second pipeline, and a first valve and a second valve are sequentially installed on the second pipeline from top to bottom; the stirring and heating system of the single-cone dryer is improved, the catalyst in the single cone is uniformly heated and fully dried, and dead angles are avoided. Install vacuum system in single awl desicator, promote heating efficiency, practice thrift the cost, promote single awl desicator work efficiency. The sealing and discharging functions required to be completed by the original high-hardness wear-resistant ball valve are decomposed into two valves, so that the problem that the process requirement cannot be met by simply using the high-hardness wear-resistant ball valve is solved.
Description
Technical Field
The invention belongs to the technical field of PPC synthesis, and particularly relates to a catalyst feeding device used in a PPC synthesis process.
Background
PPC (Polypropylene carbonate) plastic is also called polymethyl ethylene carbonate, and is completely degradable environment-friendly plastic synthesized by taking carbon dioxide and propylene oxide as raw materials.
In the existing stage of the industry, a catalyst feeding process in the PPC synthesis process mainly adopts the mode that a catalyst buffer tank is arranged at the upper part of a PPC synthesis kettle, a feeding pipeline is arranged at the top of the PPC synthesis kettle, a discharging pipeline is arranged at the bottom of the PPC synthesis kettle, and a stop valve is arranged on the pipeline. The feeding pipeline at the upper part of the catalyst buffer tank is connected with the catalyst screw feeder. In the production process, after weighing and metering, adding the catalyst into a catalyst spiral feeder, starting spiral feeding, adding the catalyst into a catalyst cache tank through a feeding pipeline, after the feeding is finished, closing a feeding pipeline stop valve of the catalyst cache tank, introducing carbon dioxide into the catalyst cache tank, pressurizing the catalyst cache tank to 2.0-3.5 MPa, stopping carbon dioxide filling, opening a blanking valve of the catalyst cache tank, putting the catalyst into a PPC synthesis kettle, closing the blanking valve of the catalyst cache tank, and finishing the operation.
The process operation has the following disadvantages:
1. the catalyst is easy to absorb water during the adding process, so that the water content of the catalyst is increased, and the increase of the water content can cause the PPC synthesis reaction to be stopped before, so that the PPC molecular weight is reduced, the polydispersity is increased, and the product quality is reduced.
2. The average particle size of the catalyst is between 5 and 10 microns, the main component of the catalyst is one of zinc dicarboxylate, metalloporphyrin or rare earth ternary catalysts, the hardness of materials is high, a blanking ball valve of a catalyst buffer tank is easy to wear to cause valve leakage, and a ball valve or an eccentric ball valve made of tetrafluoro sealing materials is mainly adopted in the industry at the present stage, and the spherical surface of the ball valve is plated with stellite.
The use times of the ball valve made of the tetrafluoro sealing material are estimated to be about 50 times through measurement, and after 50 times, trace leakage can occur, and the ball valve needs to be replaced and maintained in time and is generally applied to a pilot plant. The eccentric ball valve is generally applied to the industrial production device, but itself has the valve rod easily to bend and damages, and the sphere is easy to wear and tear the scheduling problem, can't use for a long time, through trying to produce and calculating, and this valve life is about 2 months, frequently changes ball valve or eccentric ball valve, has both influenced PPC synthetic efficiency and has caused very big waste of resources, is one of the present urgent to need to solve problem.
Disclosure of Invention
The invention aims to solve the technical problem that a catalyst is easy to absorb water in the adding process, and provides a catalyst feeding device for a PPC (polypropylene random copolymer) synthesis process, which has the technical effects of controlling the water content of the catalyst and avoiding the water absorption of the catalyst in the adding process.
The invention aims to solve the technical problem of valve abrasion caused by higher catalyst hardness, provides a catalyst feeding device for a PPC (polypropylene random copolymer) synthesis process, and solves the problem that the process requirements cannot be met by simply using a high-hardness wear-resistant ball valve.
The technical scheme provided by the invention is as follows:
a catalyst feeding device used in a PPC synthesis process comprises a synthesis kettle, a buffer tank and a single-cone dryer, wherein the lower end of the single-cone dryer is communicated with the upper end of the buffer tank through a first pipeline, the lower end of the buffer tank is communicated with the upper end of the synthesis kettle through a second pipeline, and a first valve and a second valve are sequentially installed on the second pipeline from top to bottom;
the single-cone dryer comprises a body, wherein the body is of a double-layer cone structure, a stirrer is rotatably installed in the middle of the upper end of the body, a jacket is sleeved outside the stirrer, a steam inlet and exhaust conversion head and a motor are respectively installed at the upper end of the body through a support, the output end of the motor is communicated with the stirrer, the lower end of the steam inlet and exhaust conversion head is communicated with the jacket through a pipeline, the upper end of the steam inlet and exhaust conversion head is communicated with a first steam outlet, the side face of the upper end of the steam inlet and exhaust conversion head is communicated with the first steam inlet, a vacuum pipe opening and a catalyst feeding opening are respectively formed in two sides of the upper end of the body, a vacuum system is arranged at the vacuum pipe opening, a second steam inlet is formed in the upper end of one side of the body, and a second steam outlet is formed in the lower end of the other side of the body.
Preferably, synthetic cauldron feed inlet is seted up to synthetic cauldron upper end, synthetic cauldron feed opening is seted up to the synthetic cauldron lower extreme, the buffer tank feed inlet is seted up to the buffer tank upper end, the buffer tank feed opening is seted up to the buffer tank lower extreme, the catalyst bin outlet is seted up to the single cone desicator lower extreme, the catalyst bin outlet goes out the installation catalyst unloading valve, the catalyst unloading valve is linked together through first pipeline and buffer tank feed inlet, the buffer tank feed opening is linked together through second pipeline and synthetic cauldron feed inlet.
Preferably, the vacuum system comprises a main vacuum system pipeline, one end of the main vacuum system pipeline is closely arranged at the vacuum pipe orifice, and one end of the main vacuum system pipeline is connected with an external vacuum device.
Preferably, an insulating layer is arranged outside the body.
Preferably, a spare vacuum pipeline is further installed between the main pipeline of the vacuum system and the external vacuum equipment.
Preferably, the main pipeline of the vacuum system is provided with a vacuum valve.
Preferably, the spare vacuum line is fitted with a vacuum valve.
Preferably, the catalyst blanking valve is a high-hardness wear-resistant ball valve, and the catalyst blanking valve adopts a stellite alloy coating.
The beneficial effects of the invention are embodied in the following aspects:
1. the stirring and heating system of the single-cone dryer is improved, the catalyst in the single cone is uniformly heated and fully dried, and dead angles are avoided.
2. Install vacuum system in single awl desicator, promote heating efficiency, practice thrift the cost, promote single awl desicator work efficiency.
3. The sealing and discharging functions required to be completed by the original high-hardness wear-resistant ball valve are decomposed into two valves, so that the problem that the process requirement cannot be met by simply using the high-hardness wear-resistant ball valve is solved.
Drawings
FIG. 1 is a process flow diagram of a catalyst feeding device used in a PPC synthesis process.
Fig. 2 is a schematic view of the single cone dryer of fig. 1.
FIG. 3 is a schematic diagram of the jacket structure of the single cone dryer agitator of FIG. 2.
In the figure: the device comprises a synthesis kettle 1, a buffer tank 2, a single-cone dryer 3, a synthesis kettle feed opening 101, a synthesis kettle feed opening 102, a buffer tank feed opening 201, a buffer tank feed opening 202, a cone 301, a second steam inlet 302, a second steam outlet 303, a catalyst discharge opening 304, a catalyst feed opening 305, a vacuum closure 306, a steam inlet and outlet conversion head 307, a first steam inlet 308, a first steam outlet 309, a stirring shaft jacket 310, a gas cavity 311, a 312 heat preservation layer, a vacuum system main pipeline 313, a standby vacuum system 314, a first vacuum valve 315, a second vacuum valve 316 and a third vacuum valve 317.
Detailed Description
The present invention will be further described with reference to the following detailed description, wherein the drawings are for illustrative purposes only and are not intended to be limiting, wherein certain elements may be omitted, enlarged or reduced in size, and are not intended to represent the actual dimensions of the product, so as to better illustrate the detailed description of the invention.
As shown in fig. 1-3, a catalyst feeding device used in a PPC synthesis process comprises a synthesis kettle 1, a buffer tank 2 and a single cone dryer 3, wherein the lower end of the single cone dryer 3 is communicated with the upper end of the buffer tank 2 through a first pipeline, the lower end of the buffer tank 2 is communicated with the upper end of the synthesis kettle 1 through a second pipeline, the single cone dryer 3 can dry a drying agent, the second pipeline is sequentially provided with a first valve and a second valve from top to bottom, and the opening and closing cooperation of the first valve and the second valve can reduce the pressure of the blanking of the single cone dryer 3 on the valves; the single-cone dryer 3 comprises a body, the body is of a double-layer cone 301 structure, a stirrer is rotatably installed in the middle of the upper end of the body, a jacket 310 is sleeved outside the stirrer, a steam inlet and steam outlet conversion head 307 and a motor are respectively installed at the upper end of the body through a support, the output end of the motor is communicated with the stirrer, the lower end of the steam inlet and steam outlet conversion head 307 is communicated with the jacket 310 through a pipeline, the upper end of the steam inlet and steam outlet conversion head 307 is communicated with a first steam outlet 309, the side surface of the upper end of the steam inlet and steam outlet conversion head 307 is communicated with a first steam inlet 308, the stirring shaft is heated by matching the steam inlet and steam outlet conversion head 307 with the jacket 310, a vacuum pipe opening and a catalyst feeding opening 305 are respectively formed in two sides of the upper end of the body, a vacuum system is arranged at the vacuum pipe opening, a second steam inlet 302 is formed in the upper end of one side of the body, the lower end of the other side of the body is provided with a second steam outlet 303, steam enters the double-layer cone 301 structure from a second steam inlet 302 and flows out through the second steam outlet 303 to realize circulation, so that the whole single-cone dryer 3 is heated, and a vacuum environment in the single-cone dryer 3 can be realized through a vacuum system, so that the heating efficiency is improved. The steam inlet and outlet conversion head 307 of the single-cone dryer 3 is characterized by comprising an inner cavity and an outer cavity, wherein the outer cavity is connected with a first steam inlet 308, the inner cavity is provided with a first steam outlet 309, the lower part of the conversion joint is connected with a single-cone stirrer, the stirrer is also provided with a double-layer jacket 310, and in the production process, steam enters the jacket 310 of the stirrer from the first steam inlet 308 through the steam conversion joint and is discharged from the first steam outlet 309 to form a stirring and heating system of the single-cone dryer 3.
Synthetic cauldron feed inlet 102 is seted up to 1 upper end of synthetic cauldron, synthetic cauldron feed opening 101 is seted up to 1 lower extreme of synthetic cauldron, buffer tank feed inlet 202 is seted up to 2 upper ends of buffer tank, buffer tank feed opening 201 is seted up to 2 lower extremes of buffer tank, catalyst bin outlet 304 is seted up to 3 lower extremes of single cone desicator, catalyst bin outlet 304 goes out installation catalyst unloading valve, catalyst unloading valve is the high rigidity ball valve that wears, catalyst unloading valve adopts department tai coming alloy coating, catalyst unloading valve is linked together through first pipeline and buffer tank feed inlet 202, buffer tank feed opening 201 is linked together through second pipeline and synthetic cauldron feed inlet 102, from last first valve and the second valve of installing in proper order down on the second pipeline.
The vacuum system comprises a main vacuum system pipeline 313, one end of the main vacuum system pipeline 313 is closely arranged at the vacuum nozzle, one end of the main vacuum system pipeline 313 andthe vacuum system is connected with an external vacuum device, a standby vacuum pipeline is further arranged between the vacuum system main pipeline 313 and the external vacuum device, and the vacuum system main pipeline 313 is 300m of the original device 3 H, the spare vacuum line is 30m 3 A first vacuum valve 315 is arranged on a main vacuum system pipeline 313 close to the vacuum gateway 306, a second vacuum valve 316 is arranged on the main vacuum system pipeline 313 far away from the vacuum gateway 306, a third vacuum valve 317 is arranged on the spare vacuum pipeline, and further, a heat preservation layer 312 is arranged outside the dryer body, so that the heat preservation effect of the heat preservation dryer body can be further ensured. The method specifically comprises the following steps: the single-cone dryer 3 is provided with a vacuum exhaust line, the exhaust line of the vacuum exhaust line is 300m away from the device 3 A/h vacuum system connection, while the single-cone dryer 3 is provided with an air extraction capacity of 20m 3 The vacuum equipment is 300m usable in the production process 3 The/h vacuum system drives the single-cone dryer 3 to ensure that the vacuum degree meets the process requirement and is 20m 3 A standby unit for a/h vacuum apparatus, when the unit is 300m 3 When the vacuum system is not started in the abnormal shutdown or startup and shutdown process of the/h vacuum system, 20m can be used 3 H vacuum equipment. The design not only achieves the purposes of saving electric energy and reducing production cost, but also can ensure the stable operation of a production system, and through calculation, the production system is 20m 3 The motor of the/h vacuum equipment is 5.5kw.h, the 3-day working time of the single-cone dryer is 12 hours according to the existing production capacity of the device, and the original device is utilized to be 300m 3 The vacuum system can save electric energy by 66kw every day, and annual production cost is 1.6 ten thousand yuan.
The single-cone dryer 3 of the invention has the following operation steps:
and opening a first steam inlet 308 valve, a second steam inlet 302 valve, a first steam outlet 309 valve and a second steam outlet 303 valve, preheating and drying the single-cone dryer 3 for 15 minutes, quantitatively adding 80kg of catalyst into the single-cone dryer 3 through a catalyst charging opening 305 after the preheating and drying are finished, and closing an upper cover of the catalyst charging opening 305. Opening the single-cone dryer 3 for stirring, controlling the low-frequency rotation at 15Hz, opening a first vacuum valve 315 and a second vacuum valve 3163 on vacuum pipelines, adjusting the opening degree of a third vacuum valve 317, controlling the internal pressure 85Kpa (A) of the single-cone dryer 3, adjusting a first steam inlet 308 valve and a second steam inlet 302 valve of the single-cone dryer 3, controlling the internal temperature of the single-cone dryer 3 to be 140 ℃, continuously drying the catalyst for 2h, sampling and detecting, wherein the water content is less than 800ppm, and finishing the drying. Closing the single-cone vacuum pipeline valve, reducing the opening degree of the first steam inlet 308 valve and the second steam inlet 302 valve, opening the catalyst discharge port 304 valve, and putting the catalyst into the catalyst buffer tank. The single cone drier 3 is closed and the valve of the catalyst discharge port 304 is closed. The first steam inlet 308 valve, the second steam inlet 302 valve are closed and the catalyst drying is complete.
On the other hand, in the design of a catalyst blanking valve and the traditional fluid conveying process, especially when materials with high hardness, high density and small particle size are conveyed, the process schemes of crawler-type conveying or air conveying and the like are generally adopted. The selected valves are gate valves or stop valves, the system tightness is poor, if a process with requirements on the tightness is adopted, ball valves are generally selected in valve selection, and meanwhile, high-hardness wear-resistant coatings (such as stellite) are added to the ball surfaces. After analysis, the conclusion is that in the opening and closing process of the valve, the pressure is too high, the hardness of the catalyst is too high, and the sealing surface of the valve is abraded, therefore, under the condition that the process requirements cannot be met by only using the high-hardness wear-resistant ball valve, the valve action is creatively decomposed, the sealing and discharging actions which need to be completed by the original high-hardness wear-resistant ball valve are decomposed into two valves, namely the first valve completes the discharging action, the second valve completes the sealing action, the high-hardness catalyst is prevented from directly contacting the sealing end surface of the second valve, the normal operation of a system is ensured, the material requirement of the valve is reduced, and the equipment cost is reduced.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. All the above-mentioned electric components are matched and belong to the existent technology. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (8)
1. A catalyst feeding device used in a PPC synthesis process is characterized by comprising a synthesis kettle, a buffer tank and a single-cone dryer, wherein the lower end of the single-cone dryer is communicated with the upper end of the buffer tank through a first pipeline, the lower end of the buffer tank is communicated with the upper end of the synthesis kettle through a second pipeline, and a first valve and a second valve are sequentially installed on the second pipeline from top to bottom;
the single-cone dryer comprises a body, wherein the body is of a double-layer cone structure, a stirrer is rotatably installed in the middle of the upper end of the body, a jacket is sleeved outside the stirrer, a steam inlet and exhaust conversion head and a motor are respectively installed at the upper end of the body through a support, the output end of the motor is communicated with the stirrer, the lower end of the steam inlet and exhaust conversion head is communicated with the jacket through a pipeline, the upper end of the steam inlet and exhaust conversion head is communicated with a first steam outlet, the side face of the upper end of the steam inlet and exhaust conversion head is communicated with the first steam inlet, a vacuum pipe opening and a catalyst feeding opening are respectively formed in two sides of the upper end of the body, a vacuum system is arranged at the vacuum pipe opening, a second steam inlet is formed in the upper end of one side of the body, and a second steam outlet is formed in the lower end of the other side of the body.
2. The catalyst feeding device for use in the PPC synthesis process according to claim 1, wherein the synthesis kettle feed port is provided at the upper end of the synthesis kettle, the synthesis kettle feed opening is provided at the lower end of the synthesis kettle, the buffer tank feed port is provided at the upper end of the buffer tank, the buffer tank feed opening is provided at the lower end of the buffer tank, the catalyst discharge port is provided at the lower end of the single cone dryer, the catalyst discharge port is provided with the catalyst discharge valve, the catalyst discharge valve is communicated with the buffer tank feed port through a first pipeline, and the buffer tank feed port is communicated with the synthesis kettle feed port through a second pipeline.
3. The catalyst feeding device for use in the PPC synthesis process according to claim 1, wherein the vacuum system comprises a main vacuum system pipeline, one end of the main vacuum system pipeline is closely arranged at the vacuum nozzle, and one end of the main vacuum system pipeline is connected with an external vacuum device.
4. The catalyst feeding device for the PPC synthesis process according to claim 1, wherein the body is externally provided with an insulating layer.
5. The catalyst feeding device for use in the PPC synthesis process according to claim 4, wherein a spare vacuum line is further installed between the main vacuum line and the external vacuum equipment.
6. The catalyst feeding device for the PPC synthesis process according to claim 5, wherein a vacuum valve is provided on the main pipeline of the vacuum system.
7. The catalyst loading device for use in a PPC synthesis process according to claim 6, wherein said backup vacuum line is equipped with a vacuum valve.
8. The catalyst feeding device for use in the PPC synthesis process according to claim 1, wherein said catalyst discharge valve is a high hardness wear-resistant ball valve, and said catalyst discharge valve is coated with stellite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210519468.6A CN114849594A (en) | 2022-05-12 | 2022-05-12 | Catalyst feeding device used in PPC synthesis process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210519468.6A CN114849594A (en) | 2022-05-12 | 2022-05-12 | Catalyst feeding device used in PPC synthesis process |
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| CN114849594A true CN114849594A (en) | 2022-08-05 |
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| CN202210519468.6A Pending CN114849594A (en) | 2022-05-12 | 2022-05-12 | Catalyst feeding device used in PPC synthesis process |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1934227A (en) * | 2004-03-23 | 2007-03-21 | 格雷斯公司 | System and process for injecting catalyst and/or additives into a fluidized catalytic cracking unit |
| CN211837821U (en) * | 2020-03-11 | 2020-11-03 | 上海南侨食品有限公司 | Catalyst adding device and reaction system |
| CN213778379U (en) * | 2020-10-23 | 2021-07-23 | 湖北恒丰医疗制药设备有限公司 | Single-cone dryer |
| CN216321800U (en) * | 2021-10-21 | 2022-04-19 | 惠州伊斯科新材料科技发展有限公司 | Catalyst filling mechanism |
-
2022
- 2022-05-12 CN CN202210519468.6A patent/CN114849594A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1934227A (en) * | 2004-03-23 | 2007-03-21 | 格雷斯公司 | System and process for injecting catalyst and/or additives into a fluidized catalytic cracking unit |
| CN211837821U (en) * | 2020-03-11 | 2020-11-03 | 上海南侨食品有限公司 | Catalyst adding device and reaction system |
| CN213778379U (en) * | 2020-10-23 | 2021-07-23 | 湖北恒丰医疗制药设备有限公司 | Single-cone dryer |
| CN216321800U (en) * | 2021-10-21 | 2022-04-19 | 惠州伊斯科新材料科技发展有限公司 | Catalyst filling mechanism |
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