CN112875787A - Method and device for removing dissolved oxygen by enhancing rotational flow and autorotation of demineralized water in petroleum resin production - Google Patents
Method and device for removing dissolved oxygen by enhancing rotational flow and autorotation of demineralized water in petroleum resin production Download PDFInfo
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- CN112875787A CN112875787A CN202011618260.7A CN202011618260A CN112875787A CN 112875787 A CN112875787 A CN 112875787A CN 202011618260 A CN202011618260 A CN 202011618260A CN 112875787 A CN112875787 A CN 112875787A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/20—Treatment of water, waste water, or sewage by degassing, i.e. liberation of dissolved gases
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
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Abstract
The invention relates to a method and a device for removing dissolved oxygen by strengthening rotational flow and autorotation of demineralized water in petroleum resin production, and provides a method for removing dissolved oxygen by strengthening rotational flow and autorotation of demineralized water in petroleum resin production, which comprises the following steps: (a) sending desalted water in the production process of petroleum resin into a cyclone autorotation enhanced degassing separator to separate and remove dissolved oxygen in water; and (b) feeding the desalted water from which the dissolved oxygen is removed into a steam generator for subsequent reaction. Also provides a desalting water rotational flow autorotation enhanced dissolved oxygen removal device in petroleum resin production.
Description
Technical Field
The invention belongs to the technical field of clean production of petroleum resin, and relates to a separation method for removing dissolved gas in a cyclone autorotation strengthening manner for desalted water used in the production process of petroleum resin. Specifically, the disclosure provides a separation treatment method and a separation treatment device for desalting water rotational flow autorotation enhanced dissolved oxygen removal in the production process of C5/C9 resin.
Background
The petroleum resin is solid or viscous liquid polymer prepared by separating and polymerizing cracking C5, C9 and dicyclopentadiene (DCPD) fractions which are byproducts of an ethylene device and are used as raw materials. It is an indispensable tackifying component for many adhesives, such as hot melt adhesives and pressure sensitive adhesives. A large amount of desalted water is needed in the production process of petroleum resin, and when the desalted water enters a system for treatment, dissolved oxygen in the desalted water needs to be removed, so that oxygen corrosion of later-stage equipment is reduced.
Aiming at removing dissolved oxygen and reducing oxygen corrosion of equipment, domestic scholars research a plurality of methods for removing dissolved oxygen, which can be divided into an external medicament, heat and the like. There are also many researchers who have optimized the equipment, such as with the new patent CN207922198U, by changing the way of delivering the condensed water to reduce the dissolved oxygen, thereby improving the oxygen removing effect of its oxygen remover. Utility model patent CN208103985U discloses a catalytic deoxidization system of nuclear power station makes hydrogen and oxygen carry out mixed catalytic reaction and reaches the deoxidization purpose through connecting hydrogen, and its process relates to the consumption of hydrogen. Utility model CN208154454 discloses a waste heat power generation demineralized water operation deoxidization system, carries out heat exchange through the heat exchanger and heats the demineralized water that the temperature is 19 ℃ to 45-47 ℃ and then reduce aquatic dissolved oxygen, and it relies on temperature variation to make aquatic dissolved oxygen solubility different and remove dissolved oxygen in the water, but its removal ability is limited and along with the temperature reduction, aquatic dissolved oxygen content can increase.
Accordingly, there is a need in the art to develop a separation method for removing dissolved oxygen from desalted water used in petroleum resin production processes that overcomes the above-mentioned drawbacks of the prior art.
Disclosure of Invention
The utility model provides a novel demineralized water whirl rotation enhanced dissolved oxygen desorption method and device in petroleum resin production, aiming at the desorption problem of the dissolved oxygen in the demineralized water in the petroleum resin production process, the technology of whirl rotation enhanced dissolved oxygen desorption separation equipment desorption dissolved oxygen in the demineralized water is adopted, thereby long-period continuous stable operation is realized, simultaneously desorption dissolved oxygen recycle can be realized more than 80%, the oxygen corrosion load of rear-end equipment is reduced more than 50%, the device has the characteristics of high efficiency, low energy consumption and long-period operation, thereby the defects of the prior art are overcome.
In one aspect, the present disclosure provides a method for removing dissolved oxygen by rotational flow and enhanced rotation of desalted water in petroleum resin production, comprising the following steps:
(a) sending desalted water in the production process of petroleum resin into a cyclone autorotation enhanced degassing separator to separate and remove dissolved oxygen in water; and
(b) and sending the desalted water without dissolved oxygen into a steam generator for subsequent reaction.
In a preferred embodiment, in step (a), the desalted water containing dissolved oxygen in the petroleum resin production process is subjected to separation and removal of the dissolved oxygen in the water under the enhancement effect of the swirling flow field, and migrates from the swirling flow central air column and overflows through the overflow port of the swirler, and finally fine droplets carried in the oxygen are removed through the woven material at the outlet port and are discharged.
In another preferred embodiment, in step (a), the dissolved oxygen content in the desalted water at the inlet of the cyclone autorotation enhanced degassing separator is less than or equal to 0.001 wt%, namely less than or equal to 10mg/L, and the temperature of the desalted water is more than 25 ℃; after separation by a rotational flow autorotation strengthened degassing separator, the total separation efficiency of dissolved oxygen removal is more than or equal to 96 percent, and the pressure loss is 0.05MPa to 0.20 MPa.
In another preferred embodiment, in step (a), the cyclone tube of the cyclone autorotation enhanced degassing separator is arranged in the tank body, the overflow port is arranged at the upper part of the tank body and faces upwards, the cyclone tube continuously runs, and the liquid in the cyclone field is coupled by revolution and revolution to enhance separation and remove the dissolved oxygen in the desalted water.
In another preferred embodiment, in the step (a), a weaving material is arranged at a gas outlet at the top of the tank body of the rotational flow autorotation strengthened degassing separator and is used for removing more than 98% of fine droplets entrained in dissolved oxygen, the fine droplets in the dissolved oxygen gas are gathered and grow on the weaving material at the outlet when being discharged out of the tank body along with the oxygen until the fine droplets fall into liquid at the bottom of the tank body and are converged, and the particle size of the fine droplets is less than or equal to 50 μm.
On the other hand, this disclosure provides a demineralized water whirl rotation strengthens dissolved oxygen remove device in petroleum resin production, and the device includes:
the cyclone autorotation strengthened degassing separator is used for feeding the desalted water in the petroleum resin production process into the cyclone autorotation strengthened degassing separator so as to separate and remove the dissolved oxygen in the water; and
and (c) the steam generator is connected with the rotational flow autorotation strengthened degassing separator and is used for feeding the desalted water without dissolved oxygen into the steam generator for subsequent reaction in the step (b).
In a preferred embodiment, the apparatus further comprises:
and the desalted water storage tank is connected with the rotational flow autorotation strengthened degassing separator and is used for storing desalted water in the production process of petroleum resin.
In another preferred embodiment, the cyclone autorotation strengthened degassing separator continuously operates for a long period, and the pressure drop is 0.01-0.4 MPa.
In another preferred embodiment, the cyclone tube of the cyclone autorotation strengthened degassing separator adopts a gas-liquid cyclone structure and is made of corrosion-resistant materials; the size of the cyclone tube is designed according to the treatment capacity, and a plurality of series-parallel connection modes are adopted according to the treatment capacity; the size of the cyclone autorotation strengthened degassing separator tank body is determined according to the treatment capacity.
In another preferred embodiment, the weaving material of the top outlet in the rotational flow autorotation strengthened degassing separator is a corrosion-resistant material, and the weaving density is determined according to the fog drop amount contained in the dissolved oxygen in the desalted water.
Has the advantages that:
1) the separation method for removing dissolved oxygen by using rotational flow autorotation reinforcement realizes 96% removal of dissolved oxygen in desalted water, and reduces the load of oxygen corrosion of rear-end equipment by more than 50%.
2) The separation method for removing dissolved oxygen in desalted water by using rotational flow autorotation strengthening realizes no medicament addition, reduces resource waste and environmental hazard, and has the advantages of simple structure, easy operation, small pressure drop loss, low energy consumption, no medicament addition and long-period continuous operation because the rotational flow pipe has no internal component.
3) The invention uses the weaving module in the outlet channel to deeply purify more than 98 percent of tiny fog drops in the dissolved oxygen, thereby reducing the liquid loss of the desalted water.
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 schematic view of a process flow of enhanced removal of dissolved oxygen by rotational flow and rotation of demineralized water in the production process of petroleum resin according to a preferred embodiment of the present disclosure.
FIG. 2 is a schematic diagram of a cyclonic spin enhanced desolventizing oxygen separation apparatus according to a preferred embodiment of the present disclosure.
Detailed Description
The inventor of the application develops a rotational flow autorotation enhanced dissolved oxygen removal device aiming at the problem of removing dissolved oxygen in desalted water in the production process of petroleum resin through extensive and intensive research, and combines a method for enhancing gas removal in liquid by using a rotational flow field in a rotational flow device with the problem of removing dissolved oxygen in desalted water; the cyclone is non-thermal separation, so that the structure is simple, the operation is easy, no external agent is needed in the dissolved oxygen removal process, and the cyclone can be used for reducing the load of the precision deaerator and the oxygen corrosion of later equipment before the precision deaerator; meanwhile, the mechanical separation method is cleaner and energy-saving, the removal and separation efficiency for removing dissolved oxygen from the desalted water is higher than 96%, and after the rotational flow autorotation enhanced removal, the content of the dissolved oxygen in the desalted water is lower than 0.4mg/L, so that the oxygen corrosion load of subsequent equipment is reduced by more than 50%.
The technical concept of the invention is as follows:
adopting an HL/G (gas-liquid) type swirler, separating out dissolved oxygen in desalted water and transferring the dissolved oxygen to the center of the swirler under the action of swirl autorotation strengthening, overflowing through an overflow pipe of the swirler to weave fiber materials through an outlet at the top of the tank body, collecting and gathering fine droplets in gas by the weaving fibers, growing up and dropping in liquid at the bottom of the tank body, and realizing the purification of the fine droplets contained in the separated dissolved oxygen; the bottom flow port of the cyclone flows out deoxidized and desalted water; the HL/G type swirler has no internal component, the device has the advantages of stable operation, low energy consumption and the like, after 96 percent of dissolved oxygen is removed, the dissolved oxygen in the desalted water is less than 0.4mg/L, the influence on the corrosion of the device caused by the content of the dissolved oxygen on the rear-end device is lightened, and simultaneously, the load of removing the dissolved oxygen at the rear end can be reduced by more than 50 percent.
In a first aspect of the present disclosure, there is provided a method for removing dissolved oxygen by rotational flow and rotation reinforcement of demineralized water in petroleum resin production, the method comprising:
desalting incoming water in the production process of petroleum resin to form desalted water, pumping the desalted water into a cyclone autorotation strengthened degassing separator, separating and degassing the desalted water containing dissolved oxygen under the strengthening action of a cyclone field, transferring the desalted water from a cyclone central air column to overflow through an overflow port of the cyclone, and finally, removing fine mist droplets carried in the oxygen through fiber weaving at an outlet and discharging the fine mist droplets; and simultaneously, the desalted water with dissolved oxygen removed flows from the bottom flow port of the cyclone, flows through the bottom of the tank body and flows out of the outlet to enter the steam generator for subsequent reaction.
In the disclosure, the dissolved oxygen content in the desalted water at the inlet of the rotational flow autorotation strengthened degassing separator is less than or equal to 0.001 wt%, namely less than or equal to 10mg/L, the temperature of the desalted water is more than 25 ℃, such as more than 70 ℃, and the inlet pressure is more than 1.0 MPa.
In the disclosure, after the desalted water is separated by the cyclone autorotation enhanced degassing separator, the dissolved oxygen removal separation efficiency is more than or equal to 80%, the total dissolved oxygen removal separation efficiency is more than or equal to 96%, the pressure loss is 0.05MPa to 0.40MPa, such as 0.05MPa to 0.20MPa, and the desalted water amount is more than 99 wt%; wherein the pressure drop loss of the cyclone is 0.01-0.15 MPa.
In the disclosure, the cyclone tube of the cyclone autorotation enhanced degassing separator is arranged in the tank body, the overflow port is arranged at the upper part of the tank body and faces upwards, the cyclone tube in the cyclone autorotation enhanced degassing separator continuously operates, and the dissolved oxygen in the desalted water is removed by utilizing the liquid revolution coupling enhanced separation in the cyclone field.
In the disclosure, a weaving material is arranged at a gas outlet at the top of a tank body of the rotational flow autorotation strengthened degassing separator and is used for treating and removing more than 98% of fine droplets carried in dissolved oxygen, and the fine droplets in the dissolved oxygen gas are gathered and grow on the weaving material at the outlet when being discharged out of the tank body along with the oxygen until falling into liquid at the bottom of the tank body and being collected; the particle size of the fine droplets is <60 μm, for example <50 μm.
In the method, no complex internal parts exist in the cyclone autorotation strengthened degassing separator, the cyclone autorotation strengthened degassing separator continuously operates for a long period, and the pressure drop is 0.01-0.4 MPa.
In the disclosure, the dissolved oxygen gas purified and separated in the rotational flow autorotation enhanced degassing separator can be discharged or collected and conveyed to other units for recycling.
In a second aspect of the present disclosure, there is provided a rotational flow and rotation enhanced dissolved oxygen removal device for demineralized water in petroleum resin production for use in the above method, the device comprising:
the desalted water storage tank is used for storing desalted water in the petroleum resin production process;
the rotational flow autorotation strengthened degassing separator is connected with the desalted water storage tank and is used for separating and degassing dissolved oxygen in the desalted water; and
and the steam generator is connected with the rotational flow autorotation strengthened degassing separator and is used for carrying out subsequent reaction on the desalted water from which the dissolved oxygen is removed.
In the present disclosure, the swirl flow rotation enhanced separator includes: the cyclone collecting inlet is connected with the outlet of the desalted water pump, and the weaving material module is connected with the top gas outlet.
In the present disclosure, the cyclone tube in the cyclone autorotation enhanced degassing separator adopts a gas-liquid cyclone structure and is made of a corrosion-resistant material.
In the present disclosure, the size of the cyclone tube in the cyclone autorotation strengthened degassing separator is designed according to the treatment capacity, and a plurality of series-parallel connection modes are adopted according to the treatment capacity; the size of the separator tank is determined according to the treatment capacity; the total separation efficiency of dissolved oxygen removal is determined by the series stages of the cyclone tubes.
In the disclosure, the cyclone autorotation strengthened degassing separator is connected in a parallel connection mode, and inlet materials are uniformly distributed by utilizing a branch flow theory.
In the cyclone autorotation strengthened degassing separator, the weaving material of the top outlet is a corrosion-resistant material, and the weaving density is determined according to the fog drop amount contained in dissolved oxygen in the desalted water; under the treatment of the weaving material separation module, tiny fogdrops carried in the purified gas are gathered and grown by the weaving module and then are dripped into the bottom of the separation tank.
In the present disclosure, during the separation treatment of the cyclone, liquid containing gas enters the cyclone, and under the action of the swirling flow field, the liquid drops rotate to strengthen the removal of gas in the liquid, and the liquid drops migrate to the side wall of the swirling flow pipe and flow downwards along the wall surface to flow out of the underflow opening, and the removed gas migrates to the center of the swirling flow pipe and overflows from the overflow opening of the cyclone.
In this disclosure, be provided with the weaving material module of being connected with the gaseous export in the knockout drum body, when whirl desorption demineralized water dissolved oxygen body, can contain a small amount of fine droplet in the gas, this gas is when weaving the material module, and fine droplet in the gas can be woven module material entrapment and assemble on weaving the material, and when fine droplet gathers and grow into liquid drop, big liquid drop, drop gravity drops and assembles in jar body bottom after overcoming the entrapment adsorption affinity of weaving the material.
In the disclosure, the rotational flow autorotation enhanced dissolved oxygen removal device can be popularized to the field of removing dissolved oxygen from various liquids.
Reference is made to the accompanying drawings.
Fig. 1 is a schematic view of a process flow of enhanced removal of dissolved oxygen by rotational flow and rotation of demineralized water in the production process of petroleum resin according to a preferred embodiment of the present disclosure. As shown in fig. 1, the desalted water in the desalted water storage tank 1-1 is pumped into a cyclone autorotation enhanced degassing separator 1-2 for dissolved oxygen removal treatment, wherein the dissolved oxygen removed from the desalted water overflows from an overflow port of the cyclone and is discharged (gas is discharged) through a top outlet of the separator tank, and the desalted water flows into the bottom of the separator tank from a bottom flow port of the cyclone and flows into a steam generator 1-3 through a bottom discharge port for subsequent treatment of the deoxidized water.
FIG. 2 is a schematic diagram of a cyclonic spin enhanced desolventizing oxygen separation apparatus according to a preferred embodiment of the present disclosure. As shown in fig. 2, the demineralized water containing dissolved oxygen enters the cyclone from the inlet 2-1 through the cyclone inlet 2-2 for cyclone separation, wherein dissolved oxygen gas separated by cyclone is discharged out of the cyclone from the overflow port 2-3 of the cyclone, demineralized water liquid flows into the bottom of the separation equipment from the underflow port 2-4 of the cyclone, and then passes through the inlet 2-6 of the cyclone equipment connected in series, under the action of the cyclone field, the dissolved oxygen in the liquid drops migrates to the center of the cyclone and flows out through the overflow ports 2-7 of the cyclone, the deoxidized desalted water flows out from the bottom flow ports 2-8 of the cyclone through the outlets 2-9 at the bottom of the device, wherein the dissolved oxygen is positioned at the upper part of the equipment, is treated for a plurality of times by the porous baffle 2-5, and then is purified by the weaving material module 2-10 at the top of the equipment to remove fine droplets entrained in the gas, and then is discharged from the discharge port 2-11.
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 18 million tons/year petroleum resin production process, the cyclone autorotation strengthened degasser is adopted to carry out cyclone separation on the desalted water containing dissolved oxygen according to the method of the invention, and the specific operation process and effect are described as follows:
1. material Properties and associated parameters
A large amount of desalted water is required to be deoxidized in the production process of petroleum resin and then enters the rear end for use, wherein the temperature of the desalted water is 107 ℃, the pressure is 1.2MPa, the content of dissolved oxygen in the desalted water is 10mg/L, and the treatment capacity is 15 t/h.
2. Cyclone autorotation strengthened degassing separator
The device is characterized in that a plurality of cyclone tubes are arranged in series-parallel connection for treatment, wherein the cyclone tubes are gas-liquid separation tubes, the size of the cyclone tubes is DN100 (diameter of 100mm), two stages of cyclone tubes which are connected in parallel and in series are selected for treatment, the treatment capacity of a single cyclone tube is 6-8t/h, and the weaving material module is woven by hydrophilic materials.
3. Carrying out the process
In the production process of petroleum resin, demineralized water containing dissolved oxygen is pumped into a cyclone tube in a cyclone autorotation strengthened degassing separator, under the action of a cyclone field, the dissolved oxygen is removed in a strengthened manner by combining the autorotation of fine fogdrop particles, more than 96% of dissolved oxygen in the demineralized water is removed, the fine fogdrop in the dissolved oxygen is collected and purified by a gas outlet weaving module after overflowing from an overflow port of the cyclone tube, so that the loss of demineralized water liquid is reduced, and demineralized water flows into the bottom of a tank body through a bottom flow port of the cyclone tube and enters next unit steam generator equipment through a liquid outlet after being collected.
4. Analysis of results
After the treatment of the rotational flow autorotation strengthening degassing separator, the treatment of a single-pole rotational flow pipe, more than 80% of dissolved oxygen in the desalted water is separated out and separated by rotational flow, more than 96% of dissolved oxygen in the desalted water is removed by two-stage rotational flow series connection treatment, and more than 98% of tiny fog drops in the dissolved oxygen are removed under the deep trapping treatment of the weaving module, so that the loss of desalted water is reduced, and the dissolved oxygen is dried; the desalted water after the dissolved oxygen removal is collected by more than 99 percent and enters a steam generator for the next reaction, and the treatment load of post-stage equipment is reduced by more than 50 percent; wherein the inlet pressure of the cyclone is 1.2MPa, the pressure loss is less than 0.2MPa, the outlet pressure of the cyclone autorotation strengthened degassing separator is more than 0.8MPa, and the pressure loss is less than 0.4 MPa; the cyclone tube and the weaving module run continuously for a long period, and the loss running period of the equipment system is prolonged by two times of the original period.
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 method for removing dissolved oxygen by strengthening rotational flow and autorotation of desalted water in petroleum resin production comprises the following steps:
(a) sending desalted water in the production process of petroleum resin into a cyclone autorotation enhanced degassing separator to separate and remove dissolved oxygen in water; and
(b) and sending the desalted water without dissolved oxygen into a steam generator for subsequent reaction.
2. The method of claim 1, wherein in step (a), the desalted water containing dissolved oxygen in the petroleum resin production process is separated and removed of the dissolved oxygen in the water under the enhancement of the swirling flow field, and migrates from the swirling flow center air column to overflow through the overflow port of the swirler, and finally fine droplets carried in the oxygen removed by the woven material at the outlet are discharged.
3. The method of claim 1 or 2, wherein in step (a), the dissolved oxygen content in the desalted water at the inlet of the rotational flow autorotation enhanced degassing separator is less than or equal to 0.001 wt%, i.e., less than or equal to 10mg/L, and the temperature of the desalted water is more than 25 ℃; after separation by a rotational flow autorotation strengthened degassing separator, the total separation efficiency of dissolved oxygen removal is more than or equal to 96 percent, and the pressure loss is 0.05MPa to 0.20 MPa.
4. The method as claimed in claim 1 or 2, wherein in step (a), the cyclone pipe of the cyclone autorotation enhanced degassing separator is arranged in the tank body, the overflow port is arranged at the upper part of the tank body and faces upwards, the cyclone pipe is operated continuously, and the dissolved oxygen in the desalted water is removed in an enhanced separation mode by utilizing the liquid revolution coupling in the cyclone field.
5. The method as claimed in claim 2, wherein in step (a), a weaving material is arranged at the gas outlet at the top of the tank body of the rotational flow autorotation strengthened degassing separator and is used for removing more than 98% of fine droplets entrained in the dissolved oxygen, the fine droplets in the dissolved oxygen gas are gathered and grow on the weaving material at the outlet when being discharged out of the tank body along with the oxygen until the fine droplets fall into liquid at the bottom of the tank body and are converged, and the particle size of the fine droplets is less than or equal to 50 μm.
6. A demineralized water whirl rotation strengthens dissolved oxygen remove device in petroleum resin production, the device includes:
the cyclone autorotation strengthened degassing separator (1-2) is used for feeding desalted water in the petroleum resin production process into the cyclone autorotation strengthened degassing separator in the step (a) to separate and remove dissolved oxygen in the water; and
and the steam generator (1-3) is connected with the rotational flow autorotation strengthened degassing separator (1-2) and is used for feeding the desalted water without dissolved oxygen into the steam generator for subsequent reaction in the step (b).
7. The apparatus of claim 6, further comprising:
and the desalted water storage tank (1-1) is connected with the rotational flow autorotation strengthened degassing separator (1-2) and is used for storing desalted water in the petroleum resin production process.
8. The device as claimed in claim 6 or 7, wherein the cyclone autorotation enhanced degassing separator is operated continuously for a long period, and the pressure drop is 0.01-0.4 MPa.
9. The device as claimed in claim 6 or 7, wherein the cyclone pipe of the cyclone autorotation strengthened degassing separator adopts a gas-liquid cyclone structure and is made of corrosion-resistant materials; the size of the cyclone tube is designed according to the treatment capacity, and a plurality of series-parallel connection modes are adopted according to the treatment capacity; the size of the cyclone autorotation strengthened degassing separator tank body is determined according to the treatment capacity.
10. The apparatus according to claim 6 or 7, wherein the weaving material of the top outlet of the rotational flow self-rotation strengthened degassing separator is corrosion-resistant material, and the weaving density is determined according to the fog drop amount contained in the dissolved oxygen in the desalted water.
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| CN202011618260.7A CN112875787A (en) | 2020-12-31 | 2020-12-31 | Method and device for removing dissolved oxygen by enhancing rotational flow and autorotation of demineralized water in petroleum resin production |
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| CN202011618260.7A CN112875787A (en) | 2020-12-31 | 2020-12-31 | Method and device for removing dissolved oxygen by enhancing rotational flow and autorotation of demineralized water in petroleum resin production |
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2020
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR20020030464A (en) * | 2000-10-17 | 2002-04-25 | 주식회사 에네트 | Air sparged hydrocyclone for effective solid-liquid separation and gas-liquid absorption and the enhancement of dissolved oxygen |
| CN103071318A (en) * | 2013-01-30 | 2013-05-01 | 华东理工大学 | Device for liquid degassing through swirling flow field or centrifugal field and pressure gradient field coupling |
| CN103112982A (en) * | 2013-01-30 | 2013-05-22 | 华东理工大学 | Method and device for degassing acidic water |
| CN108609794A (en) * | 2018-06-29 | 2018-10-02 | 上海米素环保科技有限公司 | A kind of rich solution degassing deoiling method and its device |
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