CN107930571B - Supercritical oxidation reactor - Google Patents
Supercritical oxidation reactor Download PDFInfo
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- CN107930571B CN107930571B CN201711473039.5A CN201711473039A CN107930571B CN 107930571 B CN107930571 B CN 107930571B CN 201711473039 A CN201711473039 A CN 201711473039A CN 107930571 B CN107930571 B CN 107930571B
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- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 24
- 230000003647 oxidation Effects 0.000 title claims abstract description 23
- 239000002893 slag Substances 0.000 claims abstract description 24
- 239000008234 soft water Substances 0.000 claims abstract description 7
- 239000011229 interlayer Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 57
- 238000010791 quenching Methods 0.000 claims description 23
- 230000000171 quenching effect Effects 0.000 claims description 16
- 238000004062 sedimentation Methods 0.000 claims description 12
- 238000007599 discharging Methods 0.000 claims description 9
- 239000010410 layer Substances 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 239000011268 mixed slurry Substances 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 abstract description 14
- 230000000694 effects Effects 0.000 abstract description 13
- 238000005185 salting out Methods 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 238000001556 precipitation Methods 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 18
- 239000000463 material Substances 0.000 description 14
- 238000013461 design Methods 0.000 description 7
- 238000009284 supercritical water oxidation Methods 0.000 description 7
- 239000013049 sediment Substances 0.000 description 6
- 238000000926 separation method Methods 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 239000003818 cinder Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/26—Nozzle-type reactors, i.e. the distribution of the initial reactants within the reactor is effected by their introduction or injection through nozzles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
- B01J19/006—Baffles
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- 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
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a supercritical oxidation reactor, which belongs to the technical field of chemical industry and environmental protection equipment, and comprises an outer cylinder, an inner cylinder which is provided with a flange cover and is in a straight cylinder shape, and a baffle plate component which is positioned in the outer cylinder; the outer cylinder body comprises a first straight cylinder section which is in a straight cylinder shape and is positioned at the upper part, and a second straight cylinder section which is in a straight cylinder shape and is larger than the first straight cylinder section in diameter and is positioned at the lower part, the first straight cylinder section and the second straight cylinder section are connected through a first cone cylinder section, and the bottom end of the second straight cylinder section is connected with a second cone cylinder section; the inner cylinder body is positioned in the first cylinder section, and the flange cover is connected with a flange arranged outside the upper opening of the first cylinder section in a matched manner; the flange cover is provided with a feed inlet communicated with the inside of the inner cylinder body and a soft water inlet communicated with an interlayer space formed by the outer side of the inner cylinder body and the inner side of the first cylinder section. The invention can solve the technical problems of reactor blockage and slag discharge blockage caused by precipitation after salting out in the prior art, and can achieve the technical effects of salt blockage prevention and smooth slag discharge.
Description
Technical Field
The invention belongs to the technical field of chemical engineering and environmental protection equipment, and particularly relates to a supercritical oxidation reactor.
Background
The supercritical water oxidation technology is used for treating hazardous wastes such as high-concentration organic waste liquid, organic sludge and the like in chemical industry and environmental protection industry, and has high degradation efficiency on organic matters, good water treatment effect, less secondary pollution on gaseous pollutants such as sulfur dioxide, nitrogen oxides and the like in exhaust gas and good application prospect. The core of the supercritical water oxidation technology is the design of a reactor, and the problems of oxidation reaction time, high-temperature corrosion, salt blockage, slag discharge and the like need to be considered.
Supercritical water oxidation reactors are various and include a reaction tank type reactor and a pipeline type reactor. The pipeline reactor has simple structure and low cost, but the pipeline is easy to be blocked by salt precipitated in a supercritical state, the organic matter is not thoroughly degraded, the oxygen is not fully utilized, and the operation cost is high. The reaction kettle type reactor has the advantages of thorough reaction, high oxygen utilization efficiency and the like, but also has the problems of high manufacturing cost and salt blockage.
Disclosure of Invention
The invention aims to provide a supercritical oxidation reactor, which solves the technical problems of blocking the reactor and deslagging blocking caused by deposition after salting out in the prior art, and can achieve the technical effects of preventing salt blocking and deslagging smoothness.
In order to achieve the above purpose, the invention adopts the following technical scheme: the supercritical oxidation reactor comprises an outer cylinder, an inner cylinder with a flange cover at the top and in a straight cylinder shape, and a baffle plate assembly positioned in the outer cylinder;
the outer cylinder body comprises a first straight cylinder section which is in a straight cylinder shape and is positioned at the upper part, and a second straight cylinder section which is in a straight cylinder shape and is larger than the first straight cylinder section in diameter, wherein the first straight cylinder section and the second straight cylinder section are connected through a first cone cylinder section in a cone cylinder shape, and the bottom end of the second straight cylinder section is connected with a second cone cylinder section in a cone cylinder shape and provided with a slag discharge port at the bottom;
the inner cylinder body is positioned in the first cylinder section, the bottom end of the inner cylinder body is connected with the first cone section, and the flange cover is connected with a flange arranged outside the upper opening of the first cylinder section in a matched manner;
the flange cover is provided with a feed inlet communicated with the inside of the inner cylinder body and a soft water inlet communicated with an interlayer space formed by the outer side of the inner cylinder body and the inner side of the first cylinder section;
the first cone section is provided with a quenching water inlet and a water outlet.
Further, the baffle plate assembly comprises a conical reflecting baffle plate which is positioned below the inner cylinder body and concentric with the inner cylinder body and is in a lower opening shape, and a sedimentation inclined plate which is positioned below the reflecting baffle plate and is in a lower opening conical shape.
Further, the conical angle of the reflecting baffle is 130-170 degrees, and the diameter of the bottom edge is 1.1-1.5 times of the diameter of the inner cylinder.
Further, the included angle between the conical surface of the sedimentation inclined plate and the horizontal plane is 60 degrees, and the diameter of the bottom edge is 1.8-1.1 times of that of the bottom edge of the reflecting baffle.
Further, the sedimentation inclined plate is provided with one to five layers, and the interval between each two layers is 50-100 mm.
Further, the slag discharging port is round, and the diameter is more than or equal to 100mm.
Further, the direction of the quenching water inlets forms an included angle of 20-70 degrees with the central line direction of the inner cylinder body, the number of the quenching water inlets is 3-8, and the quenching water inlets are uniformly distributed along the conical surface of the first conical section.
Further, the direction of the water outlet forms an included angle of 30-60 degrees with the central line direction of the inner cylinder body, the number of the water outlets is 1-4, and the water outlets are uniformly distributed along the conical surface of the first conical section.
Further, the diameter of the second straight cylinder section is 2-4 times of that of the first straight cylinder section, and the integral volume formed by the first conical cylinder section, the second straight cylinder section and the second conical cylinder section is 2-10 times of that of the first straight cylinder section.
Further, the feeding port is of a double-channel nozzle structure and is positioned in the center of the flange cover, one channel is a mixed slurry channel, and the other channel is an oxygen or air channel.
The supercritical oxidation reactor provided by the invention has the beneficial effects that: compared with the condition that salt blockage and slag discharge are difficult in the salt blockage conditions of the reaction kettle type reactor and the pipeline type reactor in the prior art, the invention adopts the straight-barrel-shaped inner barrel, the phenomenon that the reactor is blocked due to the fact that the inner barrel is deposited on the surface of the inner barrel after salting out is prevented by adopting the straight-pipe section (straight barrel shape) because the inner barrel is a supercritical water oxidation complete reaction section, the structure and the shape design of the outer barrel can enable the volume of the lower part of the outer barrel to be larger, better conditions are provided for mud-water separation, the size of a slag discharge port can be relatively larger, slag discharge is facilitated, a baffle plate component is arranged, and the mud-sand separation effect is better. The device can solve the technical problems of reactor blockage and slag discharge blockage caused by precipitation after salting out in the prior art, and can achieve the technical effects of salt blockage prevention and smooth slag discharge.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a supercritical oxidation reactor according to an embodiment of the present invention.
Wherein, each reference sign in the figure:
1-flange cover, 2-inner cylinder, 3-feed inlet, 4-soft water inlet, 5-flange, 6-first cylinder section, 7-first cone section, 8-second cylinder section, 9-second cone section, 10-quenching water inlet, 11-water outlet, 12-slag discharge outlet, 13-reflection baffle, 14-sedimentation inclined plate and 15-inclined plate support.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are merely for convenience in describing and simplifying the description based on the orientation or positional relationship shown in the drawings, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" or "a number" means two or more, unless specifically defined otherwise.
Referring to fig. 1, the invention comprises an outer cylinder, an inner cylinder 2 with a flange cover 1 at the top and in a straight cylinder shape, and a baffle plate assembly positioned in the outer cylinder; the outer cylinder body is a pressure container and comprises a first straight cylinder section 6 which is in a straight cylinder shape and is positioned at the upper part and a second straight cylinder section 8 which is in a straight cylinder shape and is larger than the first straight cylinder section 6 in diameter, the first straight cylinder section 6 and the second straight cylinder section 8 are connected through a first cone cylinder section 7 which is in a cone cylinder shape, the outer included angle between the first straight cylinder section 6 and the first cone cylinder section 7 is 120-150 degrees, and the bottom end of the second straight cylinder section 8 is connected with a second cone cylinder section 9 which is in a cone cylinder shape and is provided with a slag discharging port 12 at the bottom; the inner cylinder body 2 is positioned in the first cylinder section 6, the inner cylinder body 2 is matched with the first cylinder section 6, the distance between the inner cylinder body 2 and the first cylinder section 6 is 1-5 mm, the bottom end of the inner cylinder body 2 is welded with the first cone section 7, the flange cover 1 is matched and connected with a flange 5 arranged outside an upper opening of the first cylinder section 6, and the flange cover 1 is connected with the flange 5 to play a sealing role to keep the pressure in the reactor; the flange cover 1 is provided with a feed inlet 3 communicated with the inside of the inner cylinder body 2 and a soft water inlet 4 communicated with an interlayer space formed by the outer side of the inner cylinder body 2 and the inner side of the first cylinder section 6; the first cone section 7 is provided with a quenching water inlet 10 and a water outlet 11, quenching water is mixed with reacted materials sprayed from the inner cylinder body 2, the temperature is instantaneously reduced to below 200 degrees, the temperature is influenced by a baffle assembly, the cooled mixed materials flow down along the baffle assembly, and at the moment, some salt generated by the reaction is carried and dissolved by the quenching water; temperature meter monitoring points are arranged inside and outside the reactor.
The invention adopts the straight inner cylinder body 2, because the inner cylinder body 2 is a supercritical water oxidation complete reaction section, the phenomenon that the reactor is blocked due to deposition on the surface of the inner cylinder body 2 after salting out is prevented by adopting a straight pipe section (straight pipe shape), the inner cylinder body 2 is welded at the lower part of the flange cover 1, a mixed material is sprayed into the inner cylinder body (straight pipe section) 2 from the feed inlet 3, the retention time is 30 seconds to 120 seconds in the section, the height-diameter ratio of the inner cylinder body 2 is 5:1 to 12:1, preferably 8:1, the inner cylinder body 2 is unpressurized, and the temperature resistance is more than 900 ℃; the quench water is mixed with the reacted materials sprayed out of the inner cylinder body 2, the temperature is instantaneously reduced to below 200 ℃, the cooled mixed materials are influenced by a baffle plate component, the cooled mixed materials flow downwards along the baffle plate component, at the moment, salt generated by some reactions is carried away and dissolved by the quench water, the baffle plate component plays a role in separating mud from water, the cooled mixed materials contain part of muddy sand, under the action of the baffle plate component, the large-particle muddy sand is downwards settled, the reactor is discharged through a slag discharge port 12, cleaner water upwards is discharged out of the reactor through a water outlet 11, and the size of the slag discharge port 12 is relatively larger due to the larger diameter of the lower part of the outer cylinder body, so that slag discharge is facilitated. The device can solve the technical problems of reactor blockage and slag discharge blockage caused by precipitation after salting out in the prior art, and can achieve the technical effects of salt blockage prevention and smooth slag discharge.
Further, referring to fig. 1, as a specific embodiment of the supercritical oxidation reactor provided by the present invention, the baffle assembly includes a conical reflecting baffle 13 located below the inner cylinder 2 and concentric with the inner cylinder 2, and a conical settling swash plate 14 located below the reflecting baffle 13 and having a shape of a conical lower opening, wherein the reflecting baffle 13 and the settling swash plate 14 are fixedly connected with the outer cylinder through a swash plate support 15; the conical angle of the reflecting baffle 13 is 130-170 degrees, the diameter of the bottom edge is 1.1-1.5 times of the diameter of the inner cylinder body 2, and the water outlet 11 penetrates through the reflecting baffle 13 and goes deep into the lower part of the reflecting baffle 13; the included angle between the conical surface of the sedimentation inclined plate 14 and the horizontal plane is 60 degrees, the diameter of the bottom edge is 1.8-1.1 times that of the bottom edge of the reflecting baffle 13, the sedimentation inclined plate 14 is provided with one to five layers, and the interval between each layer is 50-100 mm.
The above structural design can play fine mud-water separation's effect, quench water mixes with the material after the reaction of follow inner tube body 2 blowout, drop the temperature in the twinkling of an eye below 200, influenced by baffle 13, the mixed material flows down along baffle 13 after the cooling, at this moment some salt that reaction produced can be taken away by quench water and dissolve, the mixed material contains partial silt through cooling, under the effect of the sediment swash plate 14 of reactor, big granule silt subsides downwards, sediment swash plate 14 is equipped with one to five layers, interval between each layer is 50 ~ 100mm, sediment subsides downwards more thoroughly, big granule silt after the sediment discharges the reactor through row cinder notch 12 at last, more clear water upwards passes through 11 delivery port discharge reactor.
Further, as a specific implementation mode of the supercritical oxidation reactor provided by the invention, the slag discharging port 12 is round, has a diameter of more than or equal to 100mm, and is positioned in the middle of the bottom of the outer cylinder. The size of the slag discharging opening 12 is more favorable for slag discharging, and the slag discharging is smooth and free from blockage.
Further, as a specific embodiment of the supercritical oxidation reactor provided by the invention, the direction of the quenching water inlet 10 forms an included angle of 20-70 degrees with the central line direction of the inner cylinder 2, the number of the quenching water inlets 10 is 3-8, and the quenching water inlets are uniformly distributed along the conical surface of the first conical section 7.
Above-mentioned structural design for the direction that quench water got into is more reasonable, can make quench water more even with the material mixture, and the cooling is more rapid, and the cooling effect is better.
Further, as a specific implementation mode of the supercritical oxidation reactor provided by the invention, the direction of the water outlet 11 forms an included angle of 30-60 degrees with the central line direction of the inner cylinder body 2, the number of the water outlets 11 is 1-4, the water outlets 11 are uniformly distributed along the conical surface of the first conical cylinder section 7, the water outlets 11 and the quenching water inlet 10 are arranged at intervals, and the water outlets 11 penetrate through the reflecting baffle 13 and penetrate into the lower part of the reflecting baffle 13.
The structural layout design of the water outlet 11 can ensure the timely water outlet and the smooth water outlet, and the direction setting of the water outlet can be conveniently connected with an external water draining device, so that the design is more reasonable.
Further, as a specific embodiment of the supercritical oxidation reactor provided by the invention, the diameter of the second straight cylinder section 8 is 2-4 times that of the first straight cylinder section 6, and the volume of the whole formed by the first cone section 7, the second straight cylinder section 8 and the second cone section 9 is 2-10 times that of the first straight cylinder section 6.
The outer barrel bottom of reactor is mainly for material and preliminary separation of muddy water after the cooling reaction, and the volume of the bottom of outer barrel (the whole that first section of thick bamboo section 7 and second section of thick bamboo section 8 and second section of thick bamboo section 9 constitute) is upper portion (first section of thick bamboo section 6) volume 2 ~ 10 times, above-mentioned design for the bottom can deposit and muddy water separation in more sufficient space, and separation effect is better, and can make the bottom have sufficient sediment mouth 12, and sediment effect is better, does not jam.
Further, as a specific embodiment of the supercritical oxidation reactor provided by the invention, the feed inlet 3 is a dual-channel nozzle structure and is positioned at the center of the flange cover 1, wherein one channel is a mixed slurry channel, and the other channel is an oxygen or air channel and is positioned at the center of the flange cover 1; soft water inlet 4 welds on flange lid 1, along the periphery evenly distributed of interior barrel 2, adjusts the temperature of interior barrel 2 in reasonable interval through the control soft water flow, ensures that the reaction is in the reasonable condition of settlement, guarantees that the reaction goes on smoothly.
In a word, the reactor is a kettle type reactor, the supercritical water oxidation reaction is complete, and the water outlet effect is good. The inner cylinder body 2 and the outer cylinder body, wherein the inner cylinder body 2 is used for reaction, is high-temperature resistant and pressure-resistant, is convenient to replace, is high-pressure resistant and is not high-temperature resistant, the materials and the processing are convenient, and the overall cost is reduced. The inner cylinder body 2 for generating supercritical water oxidation reaction is a straight pipe, so that the problem of salt blockage in the reactor section is solved; the quenching water inlet 10 and the reflecting baffle 13 are arranged at the bottom of the outer cylinder body of the reactor, so that the high-temperature material after reaction is cooled rapidly, salt sprayed out of the inner cylinder body 2 is dissolved rapidly, and the water outlet 11 and the sedimentation inclined plate 14 are arranged, so that the mud and sand in the mixed material after reaction are separated preliminarily, the water is clear, and the scouring effect of the mud and sand on subsequent pipelines and equipment is reduced; the slag discharging opening 12 at the bottom is larger, which is beneficial to the discharge of the silt.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (9)
1. The supercritical oxidation reactor is characterized in that: comprises an outer cylinder body, an inner cylinder body (2) which is provided with a flange cover (1) at the top and is in a straight cylinder shape, and a baffle plate component positioned in the outer cylinder body;
the outer cylinder body comprises a first straight cylinder section (6) which is positioned at the upper part and is in a straight cylinder shape, and a second straight cylinder section (8) which is positioned at the lower part and is in a straight cylinder shape and has a diameter larger than that of the first straight cylinder section (6), the first straight cylinder section (6) and the second straight cylinder section (8) are connected through a first cone cylinder section (7) which is in a cone cylinder shape, and the bottom end of the second straight cylinder section (8) is connected with a second cone cylinder section (9) which is in a cone cylinder shape and is provided with a slag discharging port (12) at the bottom;
the inner cylinder body (2) is positioned in the first cylinder section (6), the bottom end of the inner cylinder body (2) is connected with the first cone section (7), and the flange cover (1) is matched and connected with a flange (5) arranged outside the upper opening of the first cylinder section (6);
the flange cover (1) is provided with a feed inlet (3) communicated with the inside of the inner cylinder body (2) and a soft water inlet (4) communicated with an interlayer space formed by the outer side of the inner cylinder body (2) and the inner side of the first straight cylinder section (6);
a quenching water inlet (10) and a water outlet (11) are arranged on the first cone section (7); the direction of the quenching water inlet (10) forms an included angle of 20-70 degrees with the central line direction of the inner cylinder body (2);
the baffle plate assembly comprises a conical reflecting baffle plate (13) which is positioned below the inner cylinder body (2) and concentric with the inner cylinder body (2) and is in a lower opening shape, and a sedimentation inclined plate (14) which is positioned below the reflecting baffle plate (13) and is in a lower opening conical shape, and the reflecting baffle plate (13) and the sedimentation inclined plate (14) are fixedly connected with the outer cylinder body through an inclined plate support (15); the conical angle of the reflecting baffle plate (13) is 130-170 degrees; the bottom edge diameter of the sedimentation inclined plate (14) is 1.1-1.8 times of the bottom edge diameter of the reflecting baffle (13); the water outlet (11) penetrates through the reflecting baffle plate (13) and goes deep into the lower part of the reflecting baffle plate (13).
2. The supercritical oxidation reactor according to claim 1, wherein: the diameter of the bottom edge of the reflecting baffle plate (13) is 1.1-1.5 times of the diameter of the inner cylinder body (2).
3. Supercritical oxidation reactor according to claim 1 or 2, characterized in that: the included angle between the conical surface of the sedimentation inclined plate (14) and the horizontal plane is 60 degrees.
4. A supercritical oxidation reactor according to claim 3, wherein: the sedimentation inclined plate (14) is provided with one to five layers, and the interval between each two layers is 50-100 mm.
5. The supercritical oxidation reactor according to claim 1, wherein: the slag discharging opening (12) is round, and the diameter is more than or equal to 100mm.
6. The supercritical oxidation reactor according to claim 1, wherein: the number of the quenching water inlets (10) is 3-8, and the quenching water inlets are uniformly distributed along the conical surface of the first conical section (7).
7. The supercritical oxidation reactor according to claim 1, wherein: the direction of the water outlets (11) and the direction of the central line of the inner cylinder body (2) form an included angle of 30-60 degrees, the number of the water outlets (11) is 1-4, and the water outlets are uniformly distributed along the conical surface of the first conical cylinder section (7).
8. The supercritical oxidation reactor according to claim 1, wherein: the diameter of the second straight cylinder section (8) is 2-4 times of the diameter of the first straight cylinder section (6), and the integral volume formed by the first conical cylinder section (7), the second straight cylinder section (8) and the second conical cylinder section (9) is 2-10 times of the volume of the first straight cylinder section (6).
9. The supercritical oxidation reactor according to claim 1, wherein: the feeding port (3) is of a double-channel nozzle structure and is positioned at the center of the flange cover (1), wherein one channel is a mixed slurry channel, and the other channel is an oxygen or air channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711473039.5A CN107930571B (en) | 2017-12-29 | 2017-12-29 | Supercritical oxidation reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711473039.5A CN107930571B (en) | 2017-12-29 | 2017-12-29 | Supercritical oxidation reactor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107930571A CN107930571A (en) | 2018-04-20 |
| CN107930571B true CN107930571B (en) | 2024-04-05 |
Family
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| SE0402783D0 (en) * | 2004-11-15 | 2004-11-15 | Chematur Eng Ab | Reactor and method for supercritical water oxidation |
| CN201044885Y (en) * | 2007-06-05 | 2008-04-09 | 南京工业大学 | Swinging sedimentation tank |
| CN102276077A (en) * | 2011-07-14 | 2011-12-14 | 浙江工商大学 | Aerobic activated sludge mud-water separation device |
| CN103157304A (en) * | 2013-04-15 | 2013-06-19 | 重庆大学 | Equidirectional-flow sloping plate depositing device |
| CN104478064A (en) * | 2014-12-05 | 2015-04-01 | 内蒙古天一环境技术有限公司 | Evaporation wall-type supercritical water oxidation reactor capable of directly separating salt and subcritical water |
| CN105692863A (en) * | 2016-04-20 | 2016-06-22 | 中国科学院上海应用物理研究所 | Anti-blocking super-critical water oxidation reactor |
| CN207872180U (en) * | 2017-12-29 | 2018-09-18 | 南京新奥环保技术有限公司 | Supercritical oxidation reactor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| SE0402783D0 (en) * | 2004-11-15 | 2004-11-15 | Chematur Eng Ab | Reactor and method for supercritical water oxidation |
| CN201044885Y (en) * | 2007-06-05 | 2008-04-09 | 南京工业大学 | Swinging sedimentation tank |
| CN102276077A (en) * | 2011-07-14 | 2011-12-14 | 浙江工商大学 | Aerobic activated sludge mud-water separation device |
| CN103157304A (en) * | 2013-04-15 | 2013-06-19 | 重庆大学 | Equidirectional-flow sloping plate depositing device |
| CN104478064A (en) * | 2014-12-05 | 2015-04-01 | 内蒙古天一环境技术有限公司 | Evaporation wall-type supercritical water oxidation reactor capable of directly separating salt and subcritical water |
| CN105692863A (en) * | 2016-04-20 | 2016-06-22 | 中国科学院上海应用物理研究所 | Anti-blocking super-critical water oxidation reactor |
| CN207872180U (en) * | 2017-12-29 | 2018-09-18 | 南京新奥环保技术有限公司 | Supercritical oxidation reactor |
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