CN112755593A - Raw material dehydration device and method in C5 petroleum resin production - Google Patents
Raw material dehydration device and method in C5 petroleum resin production Download PDFInfo
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- CN112755593A CN112755593A CN202011624882.0A CN202011624882A CN112755593A CN 112755593 A CN112755593 A CN 112755593A CN 202011624882 A CN202011624882 A CN 202011624882A CN 112755593 A CN112755593 A CN 112755593A
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- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 73
- 239000002994 raw material Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 33
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- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 2
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- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0217—Separation of non-miscible liquids by centrifugal force
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/0208—Separation of non-miscible liquids by sedimentation
Abstract
The present disclosure relates to a raw material dehydration device and a method in C5 petroleum resin production, and provides a raw material dehydration device in C5 petroleum resin production, the device comprises: the device comprises a pressure-bearing shell, and a cyclone, a sealing clapboard and a nanofiber coalescence dehydration module or a corrugation settlement module which are arranged in the pressure-bearing shell, wherein the sealing clapboard divides the pressure-bearing shell into a preliminary dehydration section and a deep dehydration section, and the preliminary dehydration section and the deep dehydration section are communicated by a cavity. Also provides a method for dehydrating the raw material in the C5 petroleum resin production.
Description
Technical Field
The utility model belongs to the technical field of dehydration treatment of raw materials in the chemical resin production process, and relates to a device for separating and purifying oil phase raw materials in the petroleum resin production process, which is suitable for removing water in the oil phase raw materials. Specifically, the disclosure provides a treatment device and a treatment method for oil phase raw material dehydration in a resin production process.
Background
The petroleum resin is a thermoplastic resin, has the characteristics of low acid value, water resistance, chemical resistance and the like, has chemical stability to acid and alkali, has the characteristics of viscosity regulation and good thermal stability, and can be widely used in various industries and fields of rubber, adhesives, coatings, papermaking, printing ink and the like. At present, the polymerization of petroleum resin such as C5 mainly comprises two production processes of thermal polymerization and catalytic polymerization. One of the most widely used methods is catalytic polymerization, in which anhydrous aluminum trichloride is usually used as a catalyst to perform cationic catalytic polymerization, a polymerization solution is formed in a polymerization kettle at a certain pressure, temperature and liquid level, and the polymerization solution is subsequently processed into a solid resin product.
The water molecules in the raw materials exist in a free state and emulsified water form, wherein hydrogen ions in the water are used as an initiator of polymerization reaction, the raw materials are subjected to polymerization reaction under the action of trace water and a catalyst, and a resin product is produced through subsequent processing. When the water content exceeds the standard, a large part of the catalyst is consumed, so that the polymerization efficiency is low, the product yield is low, and a large amount of water directly destroys the polymerization reaction.
Therefore, under the same catalyst polymerization conditions, the control of moisture is an important factor in determining the polymerization effect. Various efforts have been made by researchers to address the problems involved. The utility model discloses a petroleum resin polymer dehydration storage tank, wherein utility model patent application CN201820721041.3 provides a water outlet is provided at the bottom of the storage tank, a petroleum resin polymer outlet is provided at the top of the storage tank, a three-section structure is provided at the inlet pipeline of the raw material inlet along the flowing direction of the raw material, the disorder and the flow velocity of the raw material are reduced by the three-section structure, the raw material is gradually lifted from the bottom of the storage tank, the liquid level of the raw material in the granular dehydrating agent is gradually lifted, and the raw material is dehydrated by controlling the flow velocity of the raw material inlet and the petroleum; however, the granular dehydrating agents in the device need to be frequently replaced, the dosage of the dehydrating agents is too large, the device is not suitable for large enterprises to stably carry out production work for a long time, and the moisture in the emulsion is difficult to remove only through one-time dehydration of the dehydrating agents. The invention patent application CN201310173841.8 discloses a physical demulsification coalescence and oil-water separation method of oil-water emulsion under the action of a micro-electric field, under the action of the micro-electric field between the lower surface of an oil-water coalescence plate and a bottom plate of a box body, oil drops float upwards to coalesce and adsorb on the lower surface of the coalescence plate, and after the oil drops grow up in volume, the oil drops float upwards from oil holes, so that oil and water are effectively separated; the device adopts a pure physical method, the oil-water separation efficiency can reach more than 98 percent, but the method has good treatment effect but large power consumption, and the treatment cost is increased. The utility model patent application CN201320465195.8 discloses an efficient oil-removing coalescence device for oily sewage, which comprises a buffering system and a coalescence oil-removing system, wherein the buffering system is communicated with the coalescence oil-removing system through a pipeline, the buffering system comprises a buffering tank body, a particulate matter carrier is contained in the buffering tank body, a water inlet pipe is arranged at the lower part of the buffering tank body, and a flushing pipe is arranged in the buffering tank body below a lower partition plate; the coalescence deoiling system comprises a coalescence device tank body, wherein a plurality of layers of coalescence plates are arranged in the coalescence device tank body, and a water outlet pipe is arranged at the lower part of the coalescence device tank body; a liquid inlet pipe is arranged at the upper part of the buffer tank body, and the inlet end of the liquid inlet pipe is communicated with the buffer tank body and is arranged below the upper partition plate; the removed oil is oil drops with smaller particle size which are difficult to treat, and the oil content of the sewage treated by the device fluctuates less; however, if the device is used for treating fluid mixtures with excessive flow or excessive water content, incomplete separation can be caused, and the separated substances still have large water content, so that the requirements of subsequent production cannot be met. The utility model discloses a C5 petroleum resin flash column feeding dehydration, deslag system is disclosed in utility model patent application CN201520575166.6, this system is provided with three buffer tanks, the feeding governing valve and the ejection of compact governing valve of buffer tank all link to each other with the level gauge on the buffer tank that corresponds, the feeding governing valve and the ejection of compact governing valve of all buffer tanks all carry out the configuration in DCS (distributed control system), thereby can come automatic control buffer tank's feeding and ejection of compact according to the liquid level of resin polymerization liquid in the buffer tank, and can control three buffer tanks and carry out feeding, ejection of compact and the operation of subsiding of stewing in turn respectively, thereby greatly prolonged the settlement dwell time of resin liquid, guaranteed the effective desorption of residual water; but this device not only area is too big, is unfavorable for industrial production's adoption, and the work of subsideing that stews has moreover directly resulted in the dewatering operating time overlength, and efficiency is too low. The utility model patent application CN201821600242.4 discloses a liquid phase coalescence bipyramid multichannel oil-water separator of coal system alkene oily waste water, the device includes oil storage device, whirl jar, horizontal liquid phase coalescence bipyramid multichannel oil-water separator and heavy component storage device, the raw materials gets into the whirl jar by the feed inlet earlier and carries out the preliminary treatment, when getting into reverse bipyramid parallel plate, utilize the smooth upper surface of the flat plate filler of reverse bipyramid parallel plate special design, fall heavy component, the oil of grabbing bump entrapment of lower surface is tiny oil drips to reach oil-water separation's purpose; however, the device does not integrate the cyclone device and the coalescence device, thereby increasing the complexity and the occupied area of the whole device and being not beneficial to the use and the subsequent maintenance of a small factory.
The dehydrating agent is adopted for filtration in a large number of patent inventions aiming at the problem that the dehydration of oil phase raw materials is difficult, and the dehydrating agent cannot meet the requirement in the process of using the dehydrating agent due to the problems of flow direction disorder and flow velocity of the raw materials, and the consumption of the catalyst is increased. Therefore, it is necessary to develop an efficient, economical and reliable dehydration process to separate water from the oil phase raw material and reduce or eliminate the addition of chemical agents, and simultaneously improve the separation efficiency to reduce the later dehydration burden, thereby achieving the purposes of reducing resource waste and improving the finished product.
Disclosure of Invention
The invention provides a novel raw material dehydration device and method in C5 petroleum resin production, which realize the purposes of removing impurities such as water and the like in oil phase raw materials and improving separation efficiency, are simple and effective, and solve the problems of more added chemical agents, unsatisfactory dehydration effect, low product quality and the like in the prior art.
In one aspect, the present disclosure provides a raw material dehydration apparatus for C5 petroleum resin production, the apparatus comprising:
the device comprises a pressure-bearing shell, and a cyclone, a sealing clapboard and a nanofiber coalescence dehydration module or a corrugation settlement module which are arranged in the pressure-bearing shell, wherein the sealing clapboard divides the pressure-bearing shell into a preliminary dehydration section and a deep dehydration section, and the preliminary dehydration section and the deep dehydration section are communicated by a cavity;
the preliminary dehydration section is provided with a plurality of cyclones connected in parallel and a fixing frame for mounting the cyclones;
the deep dehydration section is provided with a nanofiber coalescence dehydration module or a ripple sedimentation module and an installation framework for fixing the nanofiber coalescence dehydration module or the ripple sedimentation module.
In a preferred embodiment, the cyclone core tube of the cyclone adopts a liquid-liquid cyclone core tube structure, and is made of an acid-resistant and alkali-resistant material.
In another preferred embodiment, the cyclone core tube is a liquid-liquid high-split-flow-ratio cyclone tube, the cross-sectional shape of the tangential inlet is circular or rectangular, the size is designed according to the treatment capacity, and a plurality of cyclone core tubes are connected in parallel according to the treatment capacity.
In another preferred embodiment, the heterogeneous fiber filter element of the nanofiber coalescence dewatering module or the corrugation sedimentation module is made of acid-resistant and alkali-resistant materials, and more than one filter element is used for treatment according to the requirement of treatment capacity.
In another preferred embodiment, the apparatus is operated continuously for a long period with a pressure loss of 0.01MPa to 0.15 MPa.
In another preferred embodiment, the pressure loss of the device is between 0.05MPa and 0.10 MPa.
In another aspect, the present disclosure provides a method for dehydrating a feedstock in the production of C5 petroleum resin, the method comprising:
the raw materials enter a cyclone for preliminary dehydration in the production of C5 petroleum resin, most of water is separated from the raw materials under the action of the cyclone field, and the obtained oil phase raw materials enter a nanofiber coalescence dehydration module or a ripple sedimentation module for deep dehydration.
In a preferred embodiment, the underflow split ratio of the cyclone for preliminary dewatering is between 5% and 20%.
In another preferred embodiment, the water content of the cyclone-dewatered raw material is less than 80 mg/L.
In another preferred embodiment, the water content of the raw material after deep dehydration by the nanofiber coalescence dehydration module or the corrugated sedimentation module is lower than 20mg/L, and the removal efficiency is more than 96%.
Has the advantages that:
1) the invention realizes the deep dehydration of the raw material by using the methods of cyclone separation and liquid coalescence, and reduces the consumption of 85 percent of catalyst in the condensation process.
2) The invention realizes deep dehydration of the raw materials by using the methods of cyclone separation and liquid coalescence, has simple structure, simple operation and small pressure drop loss, and can realize low energy consumption and long-period continuous operation.
3) The invention realizes the deep dehydration of the raw material by using the methods of cyclone separation and liquid coalescence, and meets the requirement that the water content of the raw material is less than 20 mg/L.
4) The invention realizes classification treatment by using a method of cyclone separation and liquid coalescence, and has high efficiency and rapidness in separation and lower energy consumption.
5) The device has the advantages of simple structure, strong modularity, convenient overhaul and maintenance, small occupied area and contribution to the use of small factories.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification to further illustrate the disclosure and not limit the disclosure.
Fig. 1 is a process flow diagram of a process for deep separation of raw oil water in a C5 petroleum resin production process according to a preferred embodiment of the present disclosure.
FIG. 2 is a schematic diagram of a vertical oil water separator apparatus according to a preferred embodiment of the present disclosure.
FIG. 3 is a schematic view of a horizontal oil water separator apparatus according to a preferred embodiment of the present disclosure.
FIG. 4 is a schematic diagram of the oil-water separator separation principle according to a preferred embodiment of the present disclosure.
FIG. 5 is a schematic diagram of a coalescing device according to a preferred embodiment of the present disclosure.
Detailed Description
After extensive and intensive research, the inventor of the application finds that for the implementation of a raw material dehydration technology in the production process of C5 petroleum resin, a separation technology of oil phase raw materials and water is carried out by adopting an oil-water separator comprising a cyclone module and a fiber heterojunction module, so that long-period stable operation can be realized, the treatment efficiency is high, the use of chemicals is reduced, and one set of device can meet the dehydration requirement, thereby developing high-efficiency, automatic and high-separation-efficiency separation equipment.
In a first aspect of the present disclosure, there is provided a raw material dehydration apparatus for C5 petroleum resin production, the apparatus comprising:
the device comprises a plurality of parallel cyclones connected with a feed inlet, a sealing clapboard and a fiber heterojunction, wherein the sealing clapboard divides a pressure-bearing shell into a preliminary dehydration section and a deep dehydration section, and the preliminary dehydration section and the deep dehydration section are communicated by a cavity;
the preliminary dehydration section is provided with a plurality of cyclones connected in parallel, a water distribution pipeline, a separation component and a fixing frame for mounting the cyclones;
the deep dehydration section is provided with a fiber heterojunction, a water phase separation storage room, a water phase outlet and a mounting framework for fixing the fiber heterojunction.
In the present disclosure, the fiber heterojunction comprises a nanofiber coalescence dehydration module or a corrugated settlement module.
In the disclosure, the cyclone core pipe of the cyclone adopts a liquid-liquid cyclone core pipe structure, the material is acid-resistant and alkali-resistant, and the single treatment capacity is 0.8m3/h-2.5m3/h。
In the present disclosure, the swirl core tube is an HL/L (liquid-liquid) high-split-flow-ratio swirl tube, the cross-sectional shape of the tangential inlet is circular or rectangular, the size is designed according to the treatment capacity, and a multi-piece parallel connection mode is adopted according to the treatment capacity.
In the present disclosure, the swirl core tube separates water by using self-revolution and revolution swirl flows with different oil-water densities, so that most of the water flows into the sewage treatment equipment from the underflow port.
In the disclosure, the fiber heterojunction filter element is made of acid-resistant and alkali-resistant materials, and more than one filter element is used for treatment according to the requirement of treatment capacity.
In the present disclosure, the fiber heterojunction utilizes hydrophilic oleophobic and oleophilic hydrophobic principles for water removal.
In the disclosure, the fiber heterojunction adopts a fiber heterojunction filter element made of hydrophilic and oleophobic materials, so that water in raw materials is coalesced and forms small droplets, and the small droplets fall under the action of gravity to complete separation; the filter element is made of oleophilic and hydrophobic material, and oil has larger surface tension than water and is coalesced on the filter element to achieve the separation purpose.
In the present disclosure, the apparatus is operated continuously for a long period with a pressure loss of 0.01 to 0.15MPa, preferably 0.05 to 0.10 MPa.
In a second aspect of the present disclosure, there is provided a method for dehydrating a feedstock in the production of C5 petroleum resin, the method comprising:
the raw materials are sent into a cyclone for preliminary dehydration, and most of water is separated from the raw materials under the action of a cyclone field; the obtained oil phase raw material is deeply dehydrated through a fiber heterojunction, and finally the water content of the raw material is reduced from 1000mg/L to below 20 mg/L.
In the disclosure, after the raw materials are put into the oil-water separator and are subjected to rotational separation by the cyclone module, a large amount of moisture is conveyed to the sewage treatment equipment through the bottom flow port of the cyclone, and the oil-phase raw materials in the overflow port of the cyclone contain a small amount of moisture and pass through the next module of the oil-water separator;
after the separation of the cyclone, the water content of the oil phase raw material in the overflow port of the cyclone is less, the oil phase raw material flows into the coalescence device for deep purification treatment, the water in the oil phase raw material is gradually condensed into small liquid drops under the action of the coalescence device, the small liquid drops into the underflow port of the oil-water separator under the action of gravity, and the oil-water separation is carried out through the fiber heterojunction module to obtain the raw material with the water content of less than 20 mg/L.
In the present disclosure, the operating temperature of the oil-water separator is not more than 95 ℃, the liquid impurity is water, and the water content is less than 99.98%.
In the present disclosure, the underflow split ratio of the cyclone for preliminary dewatering is 5% to 20%.
In the present disclosure, the water content of the feedstock initially dewatered by the cyclone is less than 80 mg/L.
In the method, the water content of the raw material after the fiber heterojunction treatment is lower than 20mg/L, and the removal efficiency is more than 96%.
The oil-water separator in the disclosure can be popularized to heterogeneous separation or deep purification separation of various waste liquids, liquids with certain viscosity.
Reference is made to the accompanying drawings.
Fig. 1 is a process flow diagram of a process for deep separation of raw oil water in a C5 petroleum resin production process according to a preferred embodiment of the present disclosure. As shown in figure 1, a raw material C5 enters an oil-water separator 1-1 for deep oil-water separation, and then sewage enters a municipal pipe network; the obtained dehydration raw material, polymerization liquid, and catalyst (AlCl)3) The mixed polymerization liquid is conveyed into a polymerization kettle 1-2 through a pipeline for reaction, the mixed polymerization liquid after the reaction is respectively circulated to an in-situ on-line rotational flow activity recovery device 1-3 through a pump to recover the activity of the catalyst, then enters a heat exchanger 1-4 for heat exchange and recycling, and finally enters the next device for subsequent preparation of petroleum resin production.
FIG. 2 is a schematic diagram of a vertical oil water separator apparatus according to a preferred embodiment of the present disclosure. As shown in figure 2, raw materials which are not dehydrated enter a cyclone module through an inlet 2-1, enter a nanofiber coalescence dehydration module 2-4 for deep separation after primary separation of a cyclone 2-2, separated water phase flows out from a bottom primary dehydration water phase outlet 2-3 and a deep dehydration water phase outlet 2-6 respectively, and oil phase flows out from a top outlet 2-5, so that separation is completed.
FIG. 3 is a schematic view of a horizontal oil water separator apparatus according to a preferred embodiment of the present disclosure. As shown in figure 3, raw materials which are not dehydrated enter a separator from a feed inlet 3-1, enter the middle part of the separator after being primarily dehydrated by a cyclone 3-2, a water phase is discharged from a primary dehydrated water phase outlet 3-5 at the lower part, an oil phase is deeply dehydrated by a ripple settling module 3-3, a coalesced water phase is converged in a water drum 3-4 under the action of gravity and is discharged after reaching a certain amount, and the deeply dehydrated oil phase flows out from a right outlet 3-6 of a separation tank and flows into a next treatment device.
FIG. 4 is a schematic diagram of the oil-water separator separation principle according to a preferred embodiment of the present disclosure. As shown in fig. 4, after the raw material enters the cyclone module through the inlet 4-1, the liquids with different densities generate a layering phenomenon due to the centrifugal force of the cyclone field, the oil phase (oil drop) with the density smaller than that of water is discharged into the coalescing device through the overflow port 4-2 of the cyclone module, and the water (water drop) is discharged through the underflow port 4-3, so that the primary separation is completed.
FIG. 5 is a schematic diagram of a coalescing device according to a preferred embodiment of the present disclosure. As shown in figure 5, raw materials subjected to primary separation in the cyclone module enter through an inlet 5-1, fluid raw materials flow through the fiber heterojunction filter element, water in a dispersed phase is changed into large water drops from small drops and is coalesced to a certain size, the water drops drop under the action of gravity, dehydration raw materials of an oil phase are coalesced on the fiber heterojunction filter element and are discharged through an oil outlet 5-2, and water is discharged through a deep dehydration water phase outlet 5-3 to complete deep dehydration.
Examples
The invention is further illustrated below with reference to specific examples. It is to be understood, however, that these examples are illustrative only and are not to be construed as limiting the scope of the present invention. Test methods in which specific conditions are not specified in the following examples are generally carried out under conventional conditions or under conditions recommended by the manufacturer. All percentages and parts are by weight unless otherwise indicated.
Example 1:
in the process of producing 11 ten thousand tons/year petroleum resin, according to the method of the invention, an oil-water separator is adopted for deep dehydration treatment, and the specific operation process and effect are described as follows:
1. material Properties and associated parameters
The raw material to be treated in the production of petroleum resin is liquid-liquid mixture, in which the impurities are free dispersion water, suspension water and emulsified water, in which C5 viscosity is 0.5cp, temp. is 45 deg.C, pressure is 0.5MPa, and density is 650kg/m3The weight ratio of water was 300ppm, the viscosity was 1cp, and the treatment amount was 6 t/h.
2. Oil-water separator device
The device is characterized in that a plurality of swirl core tubes are connected in parallel, wherein the specification of the swirl core tubes is HL/L35, two swirl core tubes are selected for parallel connection, and the treatment capacity of a single core tube is 0.8-2.5m3H; the coalescence adopts two coalescence separation filter cores and two filtration separation filter cores, the specification is phenolic resin modified superfine glass fiber cotton felt, the treatment amount is 3 t-h。
3. Carrying out the process
The water-containing raw materials enter an oil-water separator, most of water flows into sewage treatment equipment through a bottom flow port of the oil-water separator after concentration and separation of the cyclone module, the rest raw materials flow into the fiber heterojunction module for deep dehydration treatment, the water content of the treated raw materials is less than 20ppm, and the pressure drop loss of the oil-water separator is less than 0.15 MPa.
4. Analysis of results
After deep dehydration and separation by an oil-water separator, more than 80% of water is conveyed to sewage treatment equipment through a bottom flow port of a cyclone, the rest raw materials enter a coalescing device for deep separation treatment, and the water content of the raw materials treated by the oil-water separator is lower than 20 ppm; the inlet pressure of the cyclone is 0.5MPa, the pressure loss is less than 0.1MPa, the subsequent catalyst usage amount is reduced by more than 85%, and the sewage generation amount is also reduced by more than 85%; the oil-water separator continuously operates for a long time, and the separation efficiency exceeds 94 percent.
The above-listed embodiments are merely preferred embodiments of the present disclosure, and are not intended to limit the scope of the present disclosure. That is, all equivalent changes and modifications made according to the contents of the claims of the present application should be considered to be within the technical scope of the present disclosure.
All documents referred to in this disclosure are incorporated by reference into this application as if each were individually incorporated by reference. Furthermore, it should be understood that various changes or modifications to the disclosure may be made by those skilled in the art after reading the above teachings of the disclosure, and such equivalents may fall within the scope of the disclosure as defined by the appended claims.
Claims (10)
1. A raw material dehydration apparatus for C5 petroleum resin production, the apparatus comprising:
the device comprises a pressure-bearing shell, and a cyclone, a sealing clapboard and a nanofiber coalescence dehydration module or a corrugation settlement module which are arranged in the pressure-bearing shell, wherein the sealing clapboard divides the pressure-bearing shell into a preliminary dehydration section and a deep dehydration section, and the preliminary dehydration section and the deep dehydration section are communicated by a cavity;
the preliminary dehydration section is provided with a plurality of cyclones connected in parallel and a fixing frame for mounting the cyclones;
the deep dehydration section is provided with a nanofiber coalescence dehydration module or a ripple sedimentation module and an installation framework for fixing the nanofiber coalescence dehydration module or the ripple sedimentation module.
2. The apparatus as claimed in claim 1, wherein the cyclone core tube of the cyclone is a liquid-liquid cyclone core tube structure, and is made of acid-resistant and alkali-resistant materials.
3. The apparatus of claim 2, wherein the cyclone core tube is a liquid-liquid high-split-flow-ratio type cyclone tube, the cross-sectional shape of the tangential inlet is circular or rectangular, the size is designed according to the treatment capacity, and a plurality of cyclone cores are connected in parallel according to the treatment capacity.
4. The apparatus of claim 1, wherein the heterogeneous fiber filter element of the nanofiber coalescence dewatering module or the corrugation sedimentation module is made of acid-resistant and alkali-resistant material, and more than one filter element is used for treatment according to the treatment requirement.
5. The apparatus according to any one of claims 1 to 4, wherein the apparatus is operated continuously for a long period with a pressure loss of 0.01MPa to 0.15 MPa.
6. The apparatus of claim 5, wherein the apparatus has a pressure loss of 0.05MPa to 0.10 MPa.
7. A method for dehydrating a feedstock in the production of C5 petroleum resin, the method comprising:
the raw materials enter a cyclone for preliminary dehydration in the production of C5 petroleum resin, most of water is separated from the raw materials under the action of the cyclone field, and the obtained oil phase raw materials enter a nanofiber coalescence dehydration module or a ripple sedimentation module for deep dehydration.
8. The method of claim 7, wherein the underflow split ratio of the cyclone for initial dewatering is between 5% and 20%.
9. The method of claim 7, wherein the water content of the cyclone-dewatered feedstock is less than 80 mg/L.
10. The method according to any one of claims 7 to 9, wherein the water content of the raw material after deep dehydration by the nanofiber coalescence dehydration module or the corrugation sedimentation module is lower than 20mg/L, and the removal efficiency is more than 96%.
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