CN112871124A - Multifunctional comprehensive equipment for polyphenylene sulfide material production - Google Patents

Multifunctional comprehensive equipment for polyphenylene sulfide material production Download PDF

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Publication number
CN112871124A
CN112871124A CN202110076285.7A CN202110076285A CN112871124A CN 112871124 A CN112871124 A CN 112871124A CN 202110076285 A CN202110076285 A CN 202110076285A CN 112871124 A CN112871124 A CN 112871124A
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Prior art keywords
kettle body
polyphenylene sulfide
filter screen
material production
rotating shaft
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CN202110076285.7A
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Chinese (zh)
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王义峰
王刚
杨遵维
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Zhuhai Changxian New Materials Technology Co ltd
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Zhuhai Changxian New Materials Technology Co ltd
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Priority to CN202110076285.7A priority Critical patent/CN112871124A/en
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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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/28—Moving reactors, e.g. rotary drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/44—Edge filtering elements, i.e. using contiguous impervious surfaces
    • B01D29/445—Bar screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0006—Controlling or regulating processes
    • B01J19/0013—Controlling the temperature of the process
    • 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0053—Details 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
    • B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J19/0053—Details of the reactor
    • B01J19/0073—Sealings
    • 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
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/002—Component parts of these vessels not mentioned in B01J3/004, B01J3/006, B01J3/02 - B01J3/08; Measures taken in conjunction with the process to be carried out, e.g. safety measures
    • 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
    • B01J3/00—Processes of utilising sub-atmospheric or super-atmospheric pressure to effect chemical or physical change of matter; Apparatus therefor
    • B01J3/006—Processes utilising sub-atmospheric pressure; Apparatus therefor
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
    • C08G75/02—Polythioethers
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00051—Controlling the temperature
    • B01J2219/00074—Controlling the temperature by indirect heating or cooling employing heat exchange fluids
    • B01J2219/00087—Controlling the temperature by indirect heating or cooling employing heat exchange fluids with heat exchange elements outside the reactor
    • B01J2219/00094—Jackets
    • 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
    • B01J2219/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
    • B01J2219/00049—Controlling or regulating processes
    • B01J2219/00162—Controlling or regulating processes controlling the pressure

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

A multifunctional comprehensive device for polyphenylene sulfide material production comprises a kettle body, a rack, a bearing block and a rotating shaft, wherein the kettle body is provided with a heat source interlayer, the double-cone parts at the two ends of the kettle body are provided with openings, one end of the kettle body is a discharging and charging port, and the other end of the kettle body is a spherical end socket; two sections of rotating shafts connected to the kettle body are hollow shafts, the first rotating shaft is a heat source input shaft, the second rotating shaft is a gas phase tubular shaft, and the hollow part is communicated into the kettle body and is connected with a built-in filtering conduit and an external communication system; a supporting plate is arranged at the spherical end socket, a wedge-shaped filter screen is welded on the supporting plate, and a filtrate outlet is formed in the spherical end socket outside the wedge-shaped filter screen. This equipment can three kinds of process flows integration need not to transport in an equipment and carry, and the airtight operation of overall process, both has convenient operation, can also avoid material leakage and material to expose the influence environment, and this equipment can carry out the vacuum and adjust, lets the filtrating collect easier, and the device can replace traditional plate and frame filter, centrifuge, washing kettle, desiccator completely simultaneously, is the first-selected equipment of filtration trade.

Description

Multifunctional comprehensive equipment for polyphenylene sulfide material production
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of large-scale chemical raw material production, in particular to large-scale chemical equipment used in the technical processes of filtering, washing, drying and the like of polyphenylene sulfide materials.
[ background of the invention ]
In the production process of polyphenylene sulfide materials, a filtering, washing and drying device is needed to respectively filter, repeatedly wash and dry the materials. The three links of the existing production line are respectively finished on different devices and production lines, and a finished product is finally obtained only by cooling, centrifugal filtration, a washing kettle and a vacuum dryer in the original process.
In the series of working processes, various disadvantages and shortcomings caused by defects of process equipment exist: 1. linking between the different links needs to be carried through the pump, and the material granule then can block up pipeline and equipment in transportation process, needs to dismantle and clear up: the polyphenylene sulfide is finally formed into a PPS product through cooling, centrifugal filtering, a washing kettle, a disc type or vacuum drier, salts and solvents in the PPS product are filtered out through centrifugal separation, a filter cake enters the washing kettle through a potential difference, after several rounds of washing, all PPS semi-finished products are placed in a slurry batching tank, water is added to prepare slurry, the slurry is sent into a centrifugal machine through a pump to be separated again, and then the slurry enters drying equipment to be dried. PPS is difficult to subside and floats in liquid in the separation process oligomer, and the PPS large granule is all subsided again in the bottom, blocks up filter screen inlet pipeline easily during the transport, causes production continuous, steady going on, greatly influences the productivity performance of whole device.
2. Contamination during the centrifugal filtration process: in the traditional production process, a centrifugal machine, a plate-and-frame filter press, a suction filter, a filter and the like are mainly adopted for filtering, the device is exposed in the air for a long time, the odor of a solvent, decomposition products and oligomers seriously pollutes the environment, and harm is brought to the physical and psychological health of operators; the NMP (N-methyl pyrrolidone) solvent belongs to a polar organic solvent, and filter cloth, a plate frame or a filter screen can not be corroded by an organic solution, can be quickly corroded or dissolved and deformed, and can be frequently leaked, so that the PPS product and the oligomer are leaked into a subsequent rectification system; the rubber ring in the liquid discharge valve is also frequently damaged, so that the whole plate frame can not stably bear pressure, the filter screen of the centrifuge is corroded, the expected filtering effect can not be achieved, and the maintenance cost is high.
3. The cleaning kettle filter screen often clogs: after the material after filtering gets into the cleaning kettle, under the good circumstances of stirring, through several rounds of demineralized water rinsing, get rid of salt and solvent in the material, obtain PPS semi-manufactured goods, can lead to cleaning kettle filter screen often to block up, in case adopt the mode of nitrogen gas blowback to remove the solution, can cause the filter screen damage, after will wasing the water pressure dry, the stirring is difficult to start again, still damage motor shaft coupling or motor overload trip often, and the cleaning performance also discounts greatly, it is big to overhaul work load, maintain, the operation cost is high.
4. When the washing is finished or the separation is needed by pumping to a centrifuge, the material conveying is very difficult: after the washed PPS material is put into the semi-finished product slurry tank, the PPS material is pumped to a centrifuge of a high floor for separation by a pump, most of water is removed, and the load of subsequent drying equipment and energy conservation can be reduced. However, the material (particulate matter and powder) is very difficult to convey, when a screw pump is adopted, the pump is often clamped, the sealing part is often leaked, the filler needs to be adjusted or replaced, the safety valve at the outlet of the pump is often blocked or damaged, when a centrifugal pump is adopted, a large amount of desalted water needs to be mixed into the material, and the energy consumption is very high; the stirring requirement on the semi-finished product slurry tank is high, the residue of the previous batch of materials cannot be reserved at the bottom, otherwise, the performance of multiple batches of materials is influenced; because the filter bag of semi-manufactured goods centrifuge all has the residual layer, consequently need artifical often to pull down and clear up, life is also very limited, and can't realize whole automation.
5. There is the material to block the problem that feeder and drying temperature are difficult to accurate regulation and control in drying process:
the materials separated by the semi-finished product centrifuge are quantitatively and continuously fed into the dryer through the feeding hopper, and the residual moisture in the materials is removed, so that the qualified requirement of product delivery is met. Because the conveyed materials have no fluidity, the quantitative feeder is often blocked and needs to be stopped for cleaning; the drying temperature of the dryer is difficult to accurately control, the temperature is too high, the color of the product is yellowed, and the qualified standard of production cannot be achieved, and if the temperature is too low, the moisture in the product cannot be completely taken away, the product performance is seriously influenced, the safety risk is also brought to downstream customers, the whole drying process must be carried out in a closed mode, the product cannot be contacted with oxygen in the air, and otherwise, the product performance can be greatly influenced.
[ summary of the invention ]
The invention provides multifunctional comprehensive equipment for producing polyphenylene sulfide materials, which integrates three process links of solid-liquid filtration, washing and drying of polyphenylene sulfide polymers, and can effectively complete the process flows of the three steps in one equipment. And the equipment is also provided with an automatic back flushing device, when the vacuum degree of the equipment does not meet the requirement, the filter screen can be automatically back flushed, so that the product loss and the environmental pollution caused by the leakage of materials during cleaning after the pipeline is blocked are avoided, meanwhile, the labor intensity of operators is reduced, and the labor productivity and the device capacity are improved.
The invention relates to a multifunctional comprehensive device for polyphenylene sulfide material production, which comprises a kettle body, a rack, a bearing seat and a rotating shaft, wherein the kettle body is connected with the rotating shaft and erected on the rack through the bearing seat; two sections of rotating shafts connected to the kettle body are hollow shafts, the first rotating shaft is a heat source input shaft, the second rotating shaft is a gas phase tubular shaft, and the hollow part of the second rotating shaft is communicated into the kettle body to be connected with a built-in filter conduit and an external communication system; a supporting plate is arranged at the spherical end socket, a wedge-shaped filter screen is welded on the supporting plate, and a filtrate outlet is formed in the spherical end socket outside the wedge-shaped filter screen.
The heat source sandwich structure of this cauldron body is full sandwich structure, and the cauldron body of whole cauldron body all is sandwich structure promptly, and the heat source is in case fill the interlayer, through flowing automatically or the cauldron body is rotatory, can be covered with the cauldron body of whole cauldron body rapidly, promotes the temperature of the cauldron body in the short time. The kettle sequentially comprises an inner cylinder layer, a jacket layer and an outer seal layer from inside to outside, a first rotating shaft serving as a heat source input shaft is introduced into a cavity between the jacket layer and the cylinder layer, and a heat source is introduced into the cavity for heating and drying. Therefore, the heat source adopted by the heat pump can be steam or heat conducting oil, and the heat source has better fluidity.
The main functions of the filtering conduit 50 and the air ventilation system 60 arranged in the kettle body are that the filtering conduit is used as a vacuum pipeline during vacuum pumping on one hand, solvent steam evaporated during material drying is also sent to be cooled and recycled through the pipeline on the other hand, and the filtering conduit needs to intercept fine powder or small particle materials after drying so as to prevent the fine powder or the small particle materials from entering the vacuum pipeline to cause product loss and pipeline blockage. Therefore, the air through system structurally comprises an air through pipeline, an electric contact vacuum meter, a pressure reducing valve, a nitrogen inlet back flushing port, a pneumatic valve and a self-operated regulating valve are respectively connected to the air through pipeline, and the air through pipeline is finally connected with a gas phase material cooling and recycling device. The ventilation system also includes a temperature sensor and a backup interface. And the end part of the filtering conduit in the kettle body is provided with a 3000-mesh intercepting filter screen which is used for preventing dried fine powder and small-particle materials from permeating into the vacuum pipeline.
And the nitrogen inlet blowback port is also used for blowback interception of fine dust and small particles adsorbed on the filter screen, once too much adsorption is carried out on the filter screen, the inlet of the air through pipeline is easily blocked, nitrogen is blown in reversely through the nitrogen inlet blowback port, fine powder and small particle materials adsorbed on the filter screen are washed away, and the smoothness of the gas phase pipeline is kept.
The wedge-shaped filter screen comprises a framework and wedge-shaped stainless steel bars, and trapezoidal space is formed by uniformly distributing the stainless steel bars at intervals to form the filter screen; wherein the stainless steel bar is made of 316L stainless steel with the width of 0.76mm and the thickness of 1.5mm, and is welded on a framework with the size of 2mm multiplied by 2mm by laser.
A back flushing port 18 for nitrogen is additionally arranged at the filtrate outlet 14 of the spherical end enclosure 12. The nitrogen inlet blowback port 18 is also used for cleaning materials easily blocked on the filter screen and filtering solids.
Wedge filter screen rigidity is good, and intensity is big, when the malleation, can filter the washing liquid smoothly, remains the PPS material and forms the filter cake and stays on the wire side, and the bottom surface of wedge filter screen is the trapezium structure again, is favorable to the filtration of liquid, and when needs nitrogen gas blowback, the nitrogen gas of bottom is further concentrated through trapezoidal horn mouth, blows off the material on the wire side more easily behind the reinforcing dynamics, reaches the purpose of clearance filter screen.
A desalted water inlet and a nitrogen inlet for filter pressing are arranged near the discharging and charging port of the kettle body.
The invention is a three-in-one device used as a special device for solid-liquid filtration, washing and drying of a polymer in a polyphenylene sulfide production process, and has the main advantages that: the wedge-shaped filter screen is formed by welding 316L stainless steel, so that the wedge-shaped filter screen is strong and corrosion-resistant; the three technological processes are integrated in one device without transferring and conveying, and the whole process is closed, so that the device has the advantages of being very convenient to operate, avoiding material leakage and material exposure from influencing the environment, greatly reducing the labor intensity of workers and the like; the self-operated regulating valve is arranged on the equipment, so that the pressure of the equipment is not over-limited, and automatic pressure detection and regulation can be realized; the electric contact vacuum meter is arranged on the device, so that the pressure state and the vacuum state in the kettle can be monitored at any time, the vacuum device is ensured not to run empty, the interception filter screen is protected, and automatic vacuum regulation and control are realized; and because this equipment can carry out vacuum regulation, it is easier to let the filtrating collect, has reduced the boiling point of water in the dry time and has bigger free space in equipment heat source selection, and equipment continuous service time is long, and the device can replace traditional plate and frame filter, centrifuge, washing kettle, desiccator completely simultaneously, is the first-selected equipment of filtration trade.
[ description of the drawings ]
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a simplified schematic side view of the embodiment 1 of the present invention.
10. A kettle body; 11. a discharging and feeding port; 111. a desalted water inlet; 112. a nitrogen inlet for filter pressing; 12. a spherical end enclosure; 13. a wedge-shaped filter screen; 131. a framework; 132. stainless steel bars; 14. a filtrate outlet; 15. a barrel layer; 16. a jacket layer; 17. an outer sealing layer; 18. a nitrogen inlet back flushing port; 20. a frame; 21. a motor; 22. a speed reducer; 30. a bearing seat; 40. a rotating shaft; 41. a first rotating shaft; 42. a second rotating shaft; 50. a filter conduit; 51. intercepting a filter screen; 60. a ventilation system; 61. a gas through pipeline; 62. an electric contact vacuum gauge; 63. a pressure reducing valve; 64. a nitrogen inlet back flushing port; 65. a pneumatic valve; 66. a self-operated regulating valve; 67. a temperature sensor; 68. and a standby interface.
[ detailed description ] embodiments
The invention will be described in further detail below with reference to the drawings and the detailed description of the invention.
Referring to the attached drawing 1, the multifunctional equipment for polyphenylene sulfide material production is shown, which integrates the functions of filtering, washing, drying and other three steps, does not need to be transported and transported in the whole treatment process, is fully sealed, automatically monitors and regulates the temperature and the air pressure in the kettle, and reduces the technical level requirements of operators.
The equipment shown in the attached figure 1 comprises a kettle body 10, a rack 20, a bearing seat 30 and a rotating shaft, wherein the rotating shaft 40 is connected to the kettle body 10 and erected on the rack 20 through the bearing seat 30, a motor 21 and a speed reducer 22 are arranged on the rack 20, the motor 21 drives the rotating shaft 40 to drive the kettle body 10 to rotate through the speed reducer 22, the power source of the equipment is the motor 21, the motor 21 transmits power to a turbine speed reducer 22 through chain transmission, an output shaft of the speed reducer 22 drives the kettle body to rotate, and a frequency converter is adopted to control the rotating speed of the motor, so that the rotating speed of the kettle body can be adjusted within
The kettle body 10 is a double-cone rotary kettle, a heat source interlayer is arranged on the kettle body 10, openings are arranged at the double-cone parts at the two ends of the kettle body 10, one end of the kettle body is a discharging and feeding port 11, and the other end of the kettle body is a spherical end enclosure 12; two sections of rotating shafts 40 connected to the kettle body 10 are hollow shafts, a first rotating shaft 41 is a heat source input shaft, a second rotating shaft 42 is a gas phase pipe shaft, and the hollow part is communicated into the kettle body 10 and is connected with a built-in filtering conduit 50 and an external communication system 60; a supporting plate is arranged at the spherical end enclosure 12, a wedge-shaped filter screen 13 is welded on the supporting plate, and a filtrate outlet 14 is formed in the spherical end enclosure 12 outside the wedge-shaped filter screen 13. When the equipment is used for filtering, the filtrate is filtered by the wedge-shaped filter screen 13, and the PPS material is left to form a filter cake and is kept on the screen surface of the wedge-shaped filter screen 13.
This cauldron body 10's heat source sandwich structure is full sandwich structure, and the cauldron body of whole cauldron body 10 all is sandwich structure promptly, and the heat source is in once filling the interlayer, through flowing nature and the cauldron body 10 is rotatory, can be covered with the cauldron body of whole cauldron body 10 rapidly, promotes the temperature of the cauldron body 10 in the short time. The kettle body 10 sequentially comprises an inner cylinder body layer 15, a jacket layer 16 and an outer seal layer 17 from inside to outside, a first rotating shaft 31 serving as a heat source input shaft is introduced into a cavity between the jacket layer and the cylinder body layer, and a heat source is introduced for heating and drying. Therefore, the heat source adopted by the heat pump can be steam or heat conducting oil, and the heat source has better fluidity.
The main functions of the filtering conduit 50 and the air ventilation system 60 arranged in the kettle body are that the filtering conduit 50 and the air ventilation system 60 are used as a vacuum pipeline during vacuum pumping on one hand, solvent steam evaporated during material drying is also sent to be cooled and recycled through the pipeline on the other hand, and the filtering conduit 50 also needs to intercept fine powder or small particle materials after drying so as to prevent the fine powder or the small particle materials from entering the vacuum pipeline to cause product loss and block the pipeline on the other hand. Therefore, the air ventilation system structurally comprises an air ventilation pipeline 61, an electric contact vacuum meter 62, a pressure reducing valve 63, a nitrogen inlet blowback port 64, a pneumatic valve 65 and a self-operated regulating valve 66 which are respectively connected with the air ventilation pipeline 61, and the air ventilation pipeline 61 is finally connected with a gas-phase material cooling and recycling device. The ventilation system also comprises a temperature sensor 67 and a backup interface 68. And the end part of the filtering conduit 50 in the kettle body is provided with a 3000-mesh intercepting filter screen 51, and the intercepting filter screen 51 is used for preventing dried fine powder and small-particle materials from permeating into the vacuum pipeline.
And the nitrogen inlet blowback port 64 is also used for blowback interception of fine dust and small particles adsorbed on the filter screen 51, once too much adsorption is carried out on the filter screen 51, the inlet of the air through pipeline is easily blocked, nitrogen is blown in reversely through the nitrogen inlet blowback port 64, fine powder and small particle materials adsorbed on the filter screen are washed away, and the smoothness of the gas phase pipeline is kept.
The air ventilation system is provided with a self-operated regulating valve 66, so that the pressure of the equipment is not exceeded, and automatic pressure detection and regulation can be realized; the electric contact vacuum meter 62 is arranged on the device, so that the pressure state and the vacuum state in the kettle body can be monitored at any time, the vacuum device is not operated in the idle state, the interception filter screen 51 is protected, and automatic vacuum regulation and control are realized.
Referring to fig. 2, the wedge-shaped filter screen 13 is shown to include a framework 131 and wedge-shaped stainless steel bars 132, and the stainless steel bars 132 are uniformly spaced to form a trapezoidal space to form the filter screen; the stainless steel bar 132 is made of 316L stainless steel with the width of 0.76mm and the thickness of 1.5mm, and is welded on the framework 131 with the thickness of 2mm multiplied by 2mm through laser.
A back flushing port 18 for nitrogen is additionally arranged at the filtrate outlet 14 of the spherical end enclosure 12.
Wedge filter screen 13 rigidity is good, and intensity is big, when the malleation, can filter the washing liquid smoothly, remains the PPS material and forms the filter cake and stays on the wire side, and wedge filter screen 13's bottom surface is the trapezium structure again, is favorable to the filtration of liquid, and when needs nitrogen gas blowback, the nitrogen gas of bottom is further concentrated through trapezoidal horn mouth, blows off the material on the wire side more easily behind the reinforcing dynamics, reaches the purpose of clearing up the filter screen.
A desalted water inlet 111 and a nitrogen gas inlet 112 for filter pressing are arranged near the discharging and charging port 11 of the kettle body. Openings for adding desalted water and nitrogen gas, respectively.
Furthermore, the kettle body of the equipment adopts a double-cone structure, and a full interlayer design is adopted outside the double cones so as to ensure that a heat source is fully covered; the cone angle of the double cones is less than 28 degrees, so that the materials can be fully mixed when the equipment rotates, and the aim of efficiently and effectively cleaning is fulfilled; most outstanding and innovative designer cuts off the conical top of one end, and the substitute is spherical head to with flange joint, convenient to detach and equipment, spherical head's bearing capacity is better, can homodisperse undertake cauldron internal pressure, the separation of the easier material is filtered and is collected when filtering.
The invention is a three-in-one device used as a special device for solid-liquid filtration, washing and drying of a polymer in a polyphenylene sulfide production process, and has the main advantages that: the wedge-shaped filter screen is formed by welding 316L stainless steel, so that the wedge-shaped filter screen is strong and corrosion-resistant; the three technological processes are integrated in one device without transferring and conveying, and the whole process is closed, so that the device has the advantages of being very convenient to operate, avoiding material leakage and material exposure from influencing the environment, greatly reducing the labor intensity of workers and the like; the self-operated regulating valve is arranged on the equipment, so that the pressure of the equipment is not over-limited, and automatic pressure detection and regulation can be realized; the electric contact vacuum meter is arranged on the device, so that the pressure state and the vacuum state in the kettle can be monitored at any time, the vacuum device is ensured not to run empty, the interception filter screen is protected, and automatic vacuum regulation and control are realized; and because this equipment can carry out vacuum regulation, it is easier to let the filtrating collect, has reduced the boiling point of water in the dry time and has bigger free space in equipment heat source selection, and equipment continuous service time is long, and the device can replace traditional plate and frame filter, centrifuge, washing kettle, desiccator completely simultaneously, is the first-selected equipment of filtration trade.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (9)

1. A multifunctional comprehensive device for polyphenylene sulfide material production comprises a kettle body, a rack, a bearing block and a rotating shaft, wherein the kettle body is connected with the rotating shaft and erected on the rack through the bearing block; two sections of rotating shafts connected to the kettle body are hollow shafts, the first rotating shaft is a heat source input shaft, the second rotating shaft is a gas phase tubular shaft, and the hollow part of the second rotating shaft is communicated into the kettle body to be connected with a built-in filter conduit and an external communication system; a supporting plate is arranged at the spherical end socket, a wedge-shaped filter screen is welded on the supporting plate, and a filtrate outlet is formed in the spherical end socket outside the wedge-shaped filter screen.
2. The multifunctional integrated equipment for polyphenylene sulfide material production as recited in claim 1, wherein the heat source sandwich structure of the kettle is a full sandwich structure, the kettle comprises an inner barrel layer, a jacket layer and an outer seal layer in sequence from inside to outside, a first rotating shaft as a heat source input shaft is introduced into a cavity between the jacket layer and the barrel layer, and a heat source is introduced for heating and drying.
3. The multifunctional integrated equipment for polyphenylene sulfide material production as recited in claim 2, wherein the heat source is steam or heat conducting oil.
4. The multifunctional integrated equipment for polyphenylene sulfide material production as recited in claim 1, wherein the gas communication system comprises a gas communication pipeline, the gas communication pipeline is respectively connected with an electric contact vacuum gauge, a pressure reducing valve, a nitrogen inlet back flushing port, a pneumatic valve and a self-operated regulating valve, and the gas communication pipeline is finally connected with a gas phase material cooling and recycling device.
5. The multifunctional integrated equipment for polyphenylene sulfide material production as recited in claim 4, wherein the ventilation system further comprises a temperature sensor and a backup interface.
6. The multifunctional integrated equipment for polyphenylene sulfide material production according to claim 1, wherein the wedge-shaped filter screen comprises a framework and wedge-shaped stainless steel bars, and trapezoidal space is formed by uniformly distributing stainless steel bars at intervals to form the filter screen; wherein the stainless steel bar is made of 316L stainless steel with the width of 0.76mm and the thickness of 1.5mm, and is welded on a framework with the size of 2mm multiplied by 2mm by laser.
7. The multifunctional integrated equipment for polyphenylene sulfide material production as recited in claim 1, wherein the inner end of the filtering conduit vessel is provided with 3000 mesh intercepting filter screen.
8. The multifunctional integrated equipment for polyphenylene sulfide material production as recited in claim 1, wherein a desalted water inlet and a pressure filtration nitrogen inlet are provided near the kettle discharge and feed port.
9. The multifunctional integrated equipment for polyphenylene sulfide material production as recited in claim 1, wherein a back-flushing port for nitrogen is additionally provided at the filtrate outlet of the spherical head.
CN202110076285.7A 2021-01-20 2021-01-20 Multifunctional comprehensive equipment for polyphenylene sulfide material production Pending CN112871124A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115703053A (en) * 2021-08-10 2023-02-17 青岛科技大学 Multifunctional integrated double-cone reaction kettle for reaction crystallization, filtration and drying and application thereof

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US5811469A (en) * 1997-05-06 1998-09-22 Exxon Research And Engineering Company Slurry hydrocarbon synthesis with downcomer fed product filtration (LAW552)
CN2495359Y (en) * 2001-08-10 2002-06-19 章义 Back-washing type high efficiency filter
CN202570176U (en) * 2012-04-09 2012-12-05 上海德鸿高新材料有限公司 Evacuating device for double-cone rotary vacuum reaction kettle
CN204253513U (en) * 2014-11-11 2015-04-08 晋中开发区圣邦液压器件有限公司 High pressure backwashing filter core
CN206604434U (en) * 2017-03-22 2017-11-03 浦城正大生化有限公司 A kind of double-cone mixer for installing arch breaking apparatus additional
CN207203519U (en) * 2017-08-18 2018-04-10 常州市新型干燥设备有限公司 A kind of bipyramid rotary dryer
CN109734912A (en) * 2018-12-10 2019-05-10 珠海长先新材料科技股份有限公司 A kind of process for separating and purifying of polyphenylene sulfide
CN111111289A (en) * 2020-02-18 2020-05-08 浙江核芯泵业有限公司 Metal wedge-shaped wire mesh filter element of backwashing filter for residual oil hydrogenation raw oil

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5811469A (en) * 1997-05-06 1998-09-22 Exxon Research And Engineering Company Slurry hydrocarbon synthesis with downcomer fed product filtration (LAW552)
CN2495359Y (en) * 2001-08-10 2002-06-19 章义 Back-washing type high efficiency filter
CN202570176U (en) * 2012-04-09 2012-12-05 上海德鸿高新材料有限公司 Evacuating device for double-cone rotary vacuum reaction kettle
CN204253513U (en) * 2014-11-11 2015-04-08 晋中开发区圣邦液压器件有限公司 High pressure backwashing filter core
CN206604434U (en) * 2017-03-22 2017-11-03 浦城正大生化有限公司 A kind of double-cone mixer for installing arch breaking apparatus additional
CN207203519U (en) * 2017-08-18 2018-04-10 常州市新型干燥设备有限公司 A kind of bipyramid rotary dryer
CN109734912A (en) * 2018-12-10 2019-05-10 珠海长先新材料科技股份有限公司 A kind of process for separating and purifying of polyphenylene sulfide
CN111111289A (en) * 2020-02-18 2020-05-08 浙江核芯泵业有限公司 Metal wedge-shaped wire mesh filter element of backwashing filter for residual oil hydrogenation raw oil

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115703053A (en) * 2021-08-10 2023-02-17 青岛科技大学 Multifunctional integrated double-cone reaction kettle for reaction crystallization, filtration and drying and application thereof

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Application publication date: 20210601