CN113354238A - Oil-containing sludge heating and separating device and using method thereof - Google Patents
Oil-containing sludge heating and separating device and using method thereof Download PDFInfo
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- CN113354238A CN113354238A CN202110733463.9A CN202110733463A CN113354238A CN 113354238 A CN113354238 A CN 113354238A CN 202110733463 A CN202110733463 A CN 202110733463A CN 113354238 A CN113354238 A CN 113354238A
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
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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
- C02F11/00—Treatment of sludge; Devices therefor
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
Abstract
The invention discloses an oil-containing sludge heating and separating device and a using method thereof, the device comprises a heating separator and a circulating conveying pipeline, the heating separator is integrally in a cylindrical shape with a thick upper part and a thin lower part, and consists of a thin cylinder at the lower part, a conical cylinder at the middle part and a thick cylinder at the upper part, the small end of the conical cylinder is connected with the thin cylinder, and the large end of the conical cylinder is connected with the thick cylinder; the bottom of the thin cylinder is provided with a heater and a feed inlet, and the feed inlet is positioned above the heater; a sludge outlet is arranged on the conical cylinder close to the thin cylinder, and a separation outlet is arranged at the top of the thick cylinder; the upper end of the circulating conveying pipeline is connected with the separation outlet, the lower end of the circulating conveying pipeline is connected with the feeding hole, the circulating conveying pipeline is provided with a sludge inlet, and a pressurizing machine is arranged on the circulating conveying pipeline at the upstream of the sludge inlet. The invention solves the technical problems of easy coking, pipeline and equipment blockage, difficult realization of continuous operation and the like in the heating and temperature rising process of the oily sludge.
Description
Technical Field
The invention belongs to the technical field of environmental protection, relates to a pretreatment process of oily sludge in a supercritical water environment, and particularly relates to an oily sludge heating and separating device and a using method thereof.
Background
The sewage treatment systems of oil fields and oil refineries and the crude oil production, storage and transportation systems can generate a large amount of oily sludge, and the treatment of the oily sludge is more and more concerned with the strictness of environmental regulations and the continuous improvement of environmental protection awareness of the whole society. The traditional treatment method of the oily sludge comprises landfill, composting, incineration and the like, but the landfill of the sludge needs to occupy a large amount of fields and cost a large amount of transportation cost, and pollutes the environment and underground water; the composting method has longer treatment time and has stricter requirements on the water content of the sludge, and in addition, the oily sludge can also contain toxic and harmful substances such as heavy metals and the like; the incineration method also has strict requirements on the water content in the sludge and generates SO in the incineration process2、NOXAnd other secondary contaminants. The traditional sludge treatment mode can generate secondary pollution, and has higher cost and low harmless rate.
Aiming at the defects of the traditional oily sludge treatment mode, a plurality of emerging oily sludge treatment methods appear, and supercritical water treatment is one of the oily sludge treatment methods. The supercritical water oxidation technology utilizes a plurality of advantages of the supercritical water, takes the supercritical water as a medium for carrying out oxidation reaction between organic matters in the oily sludge and oxygen, carries out quick and efficient removal of organic pollutants, and has the advantages of high reaction speed, high reaction efficiency, full realization of self-heating through exothermic reaction, realization of reduction, harmlessness and recycling of the sludge and the like. At present, the supercritical water oxidation technology is widely applied to the fields of military industry, chemical industry, aerospace, ships, environmental protection and the like in the world, is used for treating high-concentration refractory organic matters generated in various fields, converts the organic matters into harmless substances such as carbon dioxide, nitrogen, water and the like, and has a good development prospect.
However, before the supercritical water oxidation reaction of the oily sludge, the oily sludge needs to be heated, and the oily sludge is easy to coke and block pipelines and equipment in a temperature range of 200-350 ℃, so that the retention time of the oily sludge in the temperature range of 200-350 ℃ is reduced, the conveying speed is increased, and the coking prevention is an important guarantee for ensuring the long-period safe operation of the device.
Disclosure of Invention
The invention provides an oil-containing sludge heating and separating device and a using method thereof, aiming at solving the problems that in the prior art, oil-containing sludge is easy to coke, blocks pipelines and equipment and is difficult to realize continuous operation in the heating and temperature rising process.
The oil-containing sludge heating and separating device provided by the invention comprises a heating separator and a circulating conveying pipeline, wherein the heating separator is integrally in a cylindrical shape with a thick upper part and a thin lower part and consists of a thin cylinder at the lower part, a conical cylinder at the middle part and a thick cylinder at the upper part; the bottom of the thin cylinder is provided with a heater and a feed inlet, and the feed inlet is positioned above the heater; a sludge outlet is arranged on the conical cylinder close to the thin cylinder, and a separation outlet is arranged at the top of the thick cylinder; the upper end of the circulating conveying pipeline is connected with the separation outlet, the lower end of the circulating conveying pipeline is connected with the feeding hole, the circulating conveying pipeline is provided with a sludge inlet, and a pressurizing machine is arranged on the circulating conveying pipeline at the upstream of the sludge inlet.
The heater can be one or more of a combustion heat release heater, an electric heater, a heating furnace and the like for heating the oily sludge.
The circulating conveying pipeline is provided with a pressurizer for pressurizing the oil-containing sludge and the heat transfer conveying auxiliary agent, so that the oil-containing sludge and the heat transfer conveying auxiliary agent can overcome the flow resistance loss and can normally flow and circulate in the heating separator and the circulating conveying pipeline. The pressurizer can be a screw compressor, a centrifugal compressor, a reciprocating compressor and the like.
The sludge outlets can be one, two or more, so that the flow of oily sludge is facilitated, and the sludge outlets are preferably arranged to be multiple and are preferably perpendicular to the conical surface of the conical barrel.
As an improvement, in order to better promote the sedimentation and collection of the oily sludge, a reducing baffle is arranged at the conical cylinder, the reducing baffle is conical, the diameter of the large end is consistent with that of the thin cylinder, and the diameter of the small end is preferably 0.3-0.8 times of that of the large end. The diameter-reducing baffle has the effects of increasing the speed of the gas phase, promoting the gas phase to carry the solid phase and leading most of oily sludge to enter the coarse cylinder from the fine cylinder; the other function is to collect the oily sludge, and after the oily sludge is settled under the action of gravity, most of the oily sludge is collected between the cone cylinder and the reducing baffle plate and does not return to the thin cylinder more.
As a further improvement, a guide plate is arranged above the reducing baffle, the guide plate is in an inverted cone shape and is used for guiding gas and solid phases entering the coarse cylinder to flow, so that more solid-phase oily sludge is dispersed to the outer ring of the coarse cylinder for sedimentation, the oily sludge is more favorably sedimentated to the area between the cone cylinder and the reducing baffle, and the oily sludge is convenient to collect. The distance between the guide plate and the reducing baffle is 0.3-3 times of the diameter of the small end of the reducing baffle, the length of the guide plate is preferably 0.5-2 times of the diameter of the small end of the reducing baffle, and the cone angle of the guide plate is preferably 30-150 degrees.
As a further improvement, a separation element is arranged below a separation outlet in the coarse cylinder, the separation element can further separate oil-containing sludge carried in gas-phase heat transfer conveying auxiliary agents, the heating efficiency of the heating separator is improved, the oil-containing sludge is prevented from being circularly heated in the heating separator for a long time, more than 99% of the oil-containing sludge can be separated through the separation action of a separation assembly, the separated oil-containing sludge falls into a region between the conical cylinder and the reducing baffle plate and leaves the heating separator from a sludge outlet, the residual oil-containing sludge and the heat transfer conveying auxiliary agents leave the heating separator from the separation outlet at the top, and the oil-containing sludge and the heat transfer conveying auxiliary agents are mixed in a conveying pipeline and the sludge entering from a sludge inlet and then enter the heating separator from a feeding hole, and the separation element can be a cyclone separator assembly and the like.
As a further improvement, the bottom of the thin cylinder is provided with a feeding distributor, the feeding distributor is positioned above the heater and connected with the feeding hole, the feeding distributor is an annular circular pipe with the diameter of 100-800 mm, the lower part of the pipe wall of the circular ring pipe is provided with one row or two or more rows of distribution holes, and the distribution holes can be slots or round holes or the combination of the slots and the round holes or the long round holes. The diameter of the round hole is 5-50 mm, the width of the strip seam is 5-30 mm, and if a plurality of rows of holes are formed, a certain angle is preferably formed between every two adjacent rows of holes. The oily sludge entering the heating separator from the feeding hole is more evenly distributed to the radial section of the heating separator through the distribution effect of the feeding distributor, and the oily sludge and the heat transfer conveying auxiliary agent obtain downward initial velocity and are better heated by a heater positioned below. The oily sludge enters the feeding distributor and is downwards sprayed out from distribution holes on the feeding distributor under the carrying action of a gas phase, the oily sludge and the heat transfer conveying auxiliary agent downwards move to a heater below under the action of inertia, and then reversely and upwards move to leave the thin cylinder and enter the thick cylinder due to the blocking action of the heater and the wall of the heating separator, and in the process of contacting with the heater, the speeds of the oily sludge and the heat transfer conveying auxiliary agent are reversed, so that the heating time of the oily sludge is prolonged, and the heating of the oily sludge is facilitated.
As a further improvement, one or two or more reheaters can be arranged above the feeding distributor in the fine cylinder so as to continuously heat the oily sludge during the process that the oily sludge and the heat transfer conveying aid enter the coarse cylinder from the fine cylinder, and ensure that the oily sludge is heated to the required temperature. The reheater can be one or more of a combustion heat release heater, an electric heater, a heating furnace and the like.
As a further improvement, a distribution disc is arranged in the thin cylinder below the reheater and above the feeding distributor, the distribution disc can be a circular plate, and a plurality of distribution holes are uniformly distributed on the plate in a square or regular triangle or annular mode for heat transfer conveying auxiliaries and oily sludge to pass through. The distribution hole can be a round hole or a strip seam or any other shape, and is preferably a round hole from the angle of convenient processing. When the circular hole is opened, the diameter of the opening is generally 10-100 mm. The arrangement of the distribution disc can ensure that the reheater uniformly heats the oil-containing sludge, the oil-containing sludge is uniformly distributed in the radial direction of the heating separator, the reheater is prevented from generating local high temperature and overheating when the reheater heats the oil-containing sludge, and uniform heating and temperature rise of the oil-containing sludge are realized.
As a further improvement, when the distribution hole of the distribution plate is a round hole, a distribution pipe can be arranged on the distribution plate, the distribution pipe is a round pipe with two open ends, the upper end of the distribution pipe extends out of the distribution plate by 50-250 mm, and the lower end of the distribution pipe extends out of the distribution plate by 100-500 mm. The distribution pipe can better collect, guide and distribute the gas phase and the solid phase, and the gas phase and the solid phase can move upwards more conveniently.
The distribution pipe can be a straight pipe, both ends of the distribution pipe can also be made into a flared trumpet shape, the inlet is flared, the collection area of the inlet end is enlarged, the outlet is flared, the ejection area of the outlet end is enlarged, and the ratio of the diameter of the inlet-outlet expanded-diameter large end to the diameter of the distribution pipe is not more than 1.5. In the process of carrying oily sludge to move upwards, the heat transfer conveying auxiliary agent is firstly accumulated below the distribution disc under the influence of flow resistance instead of completely entering the distribution pipe, and the oily sludge at a certain height is accumulated below the distribution disc and then enters the distribution pipe to move upwards, as a further scheme, the lower end of the distribution pipe can be provided with strip seams which can promote the fluidized oily sludge to be more uniformly distributed into each distribution pipe, wherein the width of each strip seam is 5-15 mm, and the length of each strip seam is 30-200 mm.
As another alternative of the distribution plate, the distribution plate can be formed by spreading V-shaped silk screens with equal intervals on the section of a thin cylinder, and plays a role in distributing the oil-containing sludge and the heat transfer conveying auxiliary agent. The V-shaped silk screen has the advantages of good rigidity, simple structure and convenient manufacture. The cross section of the V-shaped silk screen is V-shaped or triangular, and the heat transfer conveying auxiliary agent carries oily sludge to pass through the gap between two adjacent V-shaped silk screens and move upwards. The strip-shaped screens with equal spacing can realize the uniform distribution of gas phase and solid phase. The gap formed by the adjacent V-shaped silk screens is large at the lower part and small at the upper part, and the heat transfer conveying auxiliary agent and the oily sludge can smoothly pass through the gap of the V-shaped silk screens, so that the flowing property is good.
As a further improvement, a preheater is arranged on the circulating conveying pipeline downstream of the sludge inlet, the preheater can reduce the heat load of the heating separator, and the oily sludge and the heat transfer conveying auxiliary agent are preliminarily heated outside the heating separator to raise the feeding temperature of the oily sludge. The preheater can be one or more of combustion heat release, electric heater, heating furnace, etc.
The thermometer is arranged in the area between the conical cylinder and the reducing baffle plate and used for monitoring the outlet temperature of the separated oily sludge so as to effectively control the reaction in time, and the thermometer can be in the forms of expansion, thermal resistance, thermocouple and the like. When the temperature of the oily sludge outlet is lower than the expected target, the power of the preheater, the heater and the reheater can be increased, the heat supply is increased, and the temperature of the sludge outlet is increased; when the temperature of the oily sludge outlet is higher than the expected target, the power of the preheater, the heater and the reheater can be reduced, or one of the heaters is turned off, the heat supply is reduced, and the temperature of the sludge outlet is reduced to the target value.
The working principle of the invention is as follows: after the oily sludge enters the thin cylinder from the feeding hole, the heater positioned at the bottom of the thin cylinder heats the oily sludge, the heated oily sludge moves upwards under the carrying action of a gas phase (heat transfer conveying auxiliary agent), the air velocity is reduced due to the diameter expansion action of the conical cylinder, the oily sludge cannot carry a solid phase to continue moving upwards, and the oily sludge is freely settled under the action of gravity, so that the purpose of separating the oily sludge from the heat transfer conveying auxiliary agent is achieved.
The invention also provides a use method of the oily sludge heating and separating device, which comprises the following steps:
1) introducing a heat transfer conveying auxiliary agent into the heating separator through a sludge inlet, starting the pressurizer, and enabling the heat transfer conveying auxiliary agent to circularly flow in a system consisting of the heating separator and a circulating conveying pipeline;
2) starting a heater, and heating the heat transfer conveying auxiliary agent in a circulating flow in a system consisting of a heating separator and a circulating conveying pipeline;
3) when the temperature of the heat transfer conveying auxiliary agent reaches 400-450 ℃ measured by a thermometer, introducing oily sludge into the circulating conveying pipeline from a sludge inlet, allowing the oily sludge to enter the thin cylinder from the feed inlet under the carrying of the heat transfer conveying auxiliary agent, moving upwards after being heated by the heater, freely settling in the thick cylinder, leaving the heating separator from a sludge outlet, and entering a subsequent treatment process, wherein the separated heat transfer conveying auxiliary agent enters the circulating conveying pipeline from a separation outlet;
4) and measuring the temperature of the oily sludge at the sludge outlet through a thermometer, and if the temperature of the oily sludge at the sludge outlet is less than 350 ℃, further heating the oily sludge by increasing the output power of a heater or by arranging a reheater until the temperature of the oily sludge at the sludge outlet is higher than 350 ℃.
The invention has the following beneficial effects:
1) the oily sludge is rapidly heated under the heating action of the heater and the reheater, the oily sludge is uniformly heated in a fluidized form under the carrying of the heat transfer conveying aid and is rapidly heated to more than 350 ℃, long-time heating within a temperature range of 200-350 ℃ is avoided, and blockage and damage of coking of the oily sludge to equipment are avoided;
2) the separation component is arranged to improve the separation efficiency, the sludge amount at a sludge outlet is guaranteed, continuous products enter a subsequent flow, the load of a compressor can be reduced after gas-solid two-phase separation, and the safety of the system is improved;
3) the outlet temperature of the sludge can be measured by measuring the temperature of a thermometer, and the outlet temperature of the oily sludge is adjusted by the heat loads of a preheater, a heater and a reheater, so that the outlet temperature of the sludge meets the requirement;
4) the arrangement of the feeding distribution pipe, the distribution disc and the distribution pipe can ensure that the oily sludge is more uniformly distributed and heated in the radial direction of the heating separator, prevent local high temperature and overheating during heating of the oily sludge and realize uniform heating and temperature rise of the oily sludge.
5) In order to better and more quickly promote heat transfer, improve the conveying speed and prevent coking, fluid with inactive chemical property and high thermal stability, particularly gas, is injected as a heat transfer conveying auxiliary agent, such as carbon dioxide and the like, before the oily sludge is quickly heated, so that on one hand, the temperature rise of the oily sludge can be promoted and the conveying speed can be improved, and on the other hand, small coking particles deposited on the surface of a heater can be taken away from the heater under the action of high-speed fluid.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic diagram of the structure of a feed distributor;
FIG. 3 is a schematic view of a structure of a distribution plate;
FIG. 4 is a schematic view of a structure of a distribution pipe;
fig. 5 is a schematic view of the structure of the distribution plate when it is composed of a V-shaped wire mesh.
In the figure: 1-feed inlet, 2-thin cylinder, 3-thermometer, 4-conical cylinder, 5-thick cylinder, 6-separation outlet, 7-separation element, 8-guide plate, 9-sludge outlet, 10-reducing baffle, 11-reheater, 12-distribution plate, 13-distribution pipe, 14-feed distributor, 15-heater, 16-conveying circulation pipeline, 17-preheater, 18-sludge inlet, 19-pressurizer, 20-distribution hole, 21-distribution hole, 22-slit and 23-V-shaped silk screen.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of the present invention, and as shown in the figure, the oil-containing sludge heating and separating device of the present invention comprises a heating separator and a circulating conveying pipeline, wherein the heating separator is composed of a thin cylinder 2 at the lower part, a conical cylinder 4 at the middle part and a thick cylinder 5 at the upper part, the small end of the conical cylinder 4 is connected with the thin cylinder 2, and the large end of the conical cylinder 4 is connected with the thick cylinder 5; the heating separator is internally provided with a heater 15, a feeding distributor 14, a distribution disc 12, a distribution pipe 13 arranged on the distribution disc 12, a reheater 11, a reducing baffle 10, a guide plate 8 and a separating element 7 in sequence from bottom to top; a sludge outlet 9 and a thermometer 3 are arranged on the conical cylinder 4 close to the thin cylinder 2, a separation outlet 6 is arranged at the top of the thick cylinder 5, a feeding hole 1 is arranged at the bottom of the thin cylinder 2, and one end of the feeding hole 1 extending into the thin cylinder is connected with a feeding distributor 14; the upper end of the circulating conveying pipeline 16 is connected with the separation outlet 6, and the lower end of the circulating conveying pipeline is connected with the feed inlet 1; the sludge inlet 18 is arranged on the circulating pipeline 16, a pressurizer 19 is arranged on the circulating conveying pipeline at the upstream of the sludge inlet 18, and a preheater 11 is arranged on the circulating conveying pipeline at the downstream.
Fig. 2 is a schematic structural diagram of the feeding distributor, the feeding distributor 14 is a circular ring pipe, the distribution holes 20 on the circular ring pipe are circular holes, and three rows of circular holes 20 are circumferentially arranged and staggered with each other.
Fig. 3 is a schematic view of a structure of a distribution plate, wherein the distribution plate 12 is a circular plate and distribution holes 21 are uniformly distributed on the distribution plate.
Fig. 4 is a schematic view showing a structure of the distribution pipe, in which the distribution pipe 13 is fixed to the distribution holes of the distribution plate 12, and both ends thereof are flared, and slits 22 are formed at the lower end of the distribution pipe.
Fig. 5 is a schematic structural view of the distribution plate formed by V-shaped wire nets, the distribution plate is formed by spreading the V-shaped wire nets 23 with equal intervals on the section of the thin cylinder 2, and the adjacent V-shaped wire nets form a gap with a large lower part and a small upper part, but may form a gap with a small lower part and a small upper part.
The use method of the oily sludge heating and separating device shown in figure 1 comprises the following steps:
1) introducing a heat transfer conveying auxiliary agent into the heating separator through a sludge inlet 18, starting a pressurizer 19, and enabling the heat transfer conveying auxiliary agent to circularly flow in a system consisting of the heating separator and a circulating conveying pipeline 16;
2) starting the preheater 17 and the heater 15, and heating the heat transfer conveying auxiliary agent in a circulating flow in a system consisting of the heating separator and a circulating conveying pipeline;
3) when the temperature of the heat transfer conveying auxiliary agent reaches 400-450 ℃ measured by a thermometer, oily sludge is introduced into a circulating conveying pipeline 16 from a sludge inlet 18, the oily sludge is carried by the heat transfer conveying auxiliary agent, enters a thin cylinder 2 from a feed inlet 1 through the distribution and guide effects of a feed distributor 14 after being heated by a preheater 17, moves upwards after being heated by a heater 15, is uniformly distributed by a distribution disc 12 and a distribution pipe 13, freely settles in a thick cylinder 5 after being accelerated by a reducing baffle 10 and guided by a guide plate 8, is separated by a separating element 7, most of the oily sludge is collected between a conical cylinder 4 and the reducing baffle 10, leaves a heating separator from a sludge outlet 9 to enter a subsequent treatment process, and the separated heat transfer conveying auxiliary agent enters the circulating conveying pipeline 16 from a separating outlet 6;
4) and measuring the temperature of the oily sludge at the sludge outlet 9 through a thermometer, and if the temperature of the oily sludge at the sludge outlet 9 is less than 350 ℃, opening the reheater 11 until the temperature of the oily sludge at the sludge outlet 9 is higher than 350 ℃.
Claims (18)
1. The utility model provides an oily sludge heating separator which characterized in that: the device comprises a heating separator and a circulating conveying pipeline, wherein the heating separator is integrally cylindrical with a thick upper part and a thin lower part and consists of a thin cylinder at the lower part, a cone cylinder at the middle part and a thick cylinder at the upper part, the small end of the cone cylinder is connected with the thin cylinder, and the large end of the cone cylinder is connected with the thick cylinder; the bottom of the thin cylinder is provided with a heater and a feed inlet, and the feed inlet is positioned above the heater; a sludge outlet is arranged on the conical cylinder close to the thin cylinder, and a separation outlet is arranged at the top of the thick cylinder; the upper end of the circulating conveying pipeline is connected with the separation outlet, the lower end of the circulating conveying pipeline is connected with the feeding hole, the circulating conveying pipeline is provided with a sludge inlet, and a pressurizing machine is arranged on the circulating conveying pipeline at the upstream of the sludge inlet.
2. The apparatus of claim 1, wherein: the taper cylinder is provided with a reducing baffle which is conical, and the diameter of the large end of the reducing baffle is consistent with that of the thin cylinder.
3. The apparatus of claim 2, wherein: the diameter of the small end of the reducing baffle is 0.3-0.8 times of the diameter of the large end.
4. The apparatus of claim 2, wherein: a guide plate is arranged above the reducing baffle and is in an inverted cone shape.
5. The apparatus of claim 4, wherein: the guide plate is 0.3-3 times the diameter of the small end of the reducing baffle from the reducing baffle, the length of the guide plate is 0.5-2 times the diameter of the small end of the reducing baffle, and the taper angle of the guide plate is 30-150 degrees.
6. The apparatus of claim 2, wherein: and a separating element is arranged below the separating outlet in the thick cylinder.
7. The apparatus of claim 4, wherein: and a separating element is arranged below the separating outlet in the thick cylinder.
8. The apparatus according to any one of claims 1 to 7, wherein: the bottom of the thin cylinder is provided with a feeding distributor which is positioned above the heater and is connected with the feeding hole.
9. The apparatus of claim 8, wherein: the feeding distributor is an annular circular pipe, and the lower part of the pipe wall of the circular pipe is provided with one row or two or more rows of distribution holes.
10. The apparatus of claim 8, wherein: one or two or more reheaters are arranged above the feeding distributor in the thin cylinder.
11. The apparatus of claim 8, wherein: a distribution disc is arranged in the thin cylinder above the feeding distributor, the distribution disc is a circular plate, and distribution holes are uniformly distributed on the plate in a square or regular triangle or annular mode.
12. The apparatus of claim 11, wherein: the distribution holes of the distribution plate are provided with distribution pipes which are round pipes with two open ends.
13. The apparatus of claim 10, wherein: distribution discs are arranged in the thin cylinders below the reheater and above the feeding distributor, the distribution discs are circular plates, and the distribution holes are uniformly distributed on the plates in a square or regular triangle or annular mode.
14. The apparatus of claim 13, wherein: the distribution holes of the distribution plate are provided with distribution pipes which are round pipes with two open ends.
15. The apparatus of claim 8, wherein: a distribution disc is arranged in the thin cylinder above the feeding distributor, and the distribution disc is formed by tiling V-shaped silk screens with equal intervals on the cross section of the thin cylinder.
16. The apparatus according to any one of claims 1 to 7, wherein: and a preheater is arranged on the circulating conveying pipeline at the downstream of the sludge inlet.
17. The apparatus of claim 10, wherein: and a preheater is arranged on the circulating conveying pipeline at the downstream of the sludge inlet.
18. A method of using the apparatus of claim 1, comprising the steps of:
1) introducing a heat transfer conveying auxiliary agent into the heating separator through a sludge inlet, starting the pressurizer, and enabling the heat transfer conveying auxiliary agent to circularly flow in a system consisting of the heating separator and a circulating conveying pipeline;
2) starting a heater, and heating the heat transfer conveying auxiliary agent in a circulating flow in a system consisting of a heating separator and a circulating conveying pipeline;
3) when the temperature of the heat transfer conveying auxiliary agent reaches 400-450 ℃ measured by a thermometer, introducing oily sludge into the circulating conveying pipeline from a sludge inlet, allowing the oily sludge to enter the thin cylinder from the feed inlet under the carrying of the heat transfer conveying auxiliary agent, moving upwards after being heated by the heater, freely settling in the thick cylinder, leaving the heating separator from a sludge outlet, and entering a subsequent treatment process, wherein the separated heat transfer conveying auxiliary agent enters the circulating conveying pipeline from a separation outlet;
4) and measuring the temperature of the oily sludge at the sludge outlet through a thermometer, and if the temperature of the oily sludge at the sludge outlet is less than 350 ℃, further heating the oily sludge by increasing the output power of a heater or by arranging a reheater until the temperature of the oily sludge at the sludge outlet is higher than 350 ℃.
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| CN101555060A (en) * | 2009-05-20 | 2009-10-14 | 南京工业大学 | Supercritical water oxidation reactor |
| CN101602566A (en) * | 2009-07-10 | 2009-12-16 | 北京惠博普能源技术有限责任公司 | A kind of novel process for comprehensively treating at oil field oil-containing mud |
| CN102674924A (en) * | 2011-03-17 | 2012-09-19 | 上海沃土环境技术有限公司 | Airlift cylinder type reactor and urban sludge composting processing system using same |
| CN102503055A (en) * | 2011-11-04 | 2012-06-20 | 青海大地环境工程技术有限公司 | Treatment method and treatment apparatus of oily sludge |
| CN112811568A (en) * | 2021-02-07 | 2021-05-18 | 江苏省环境科学研究院 | Heterogeneous catalysis supercritical water oxidation reactor |
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