CN210332642U - Reaction system suitable for supercritical water oxidation intermittent operation - Google Patents
Reaction system suitable for supercritical water oxidation intermittent operation Download PDFInfo
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- CN210332642U CN210332642U CN201920559800.5U CN201920559800U CN210332642U CN 210332642 U CN210332642 U CN 210332642U CN 201920559800 U CN201920559800 U CN 201920559800U CN 210332642 U CN210332642 U CN 210332642U
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Abstract
The utility model belongs to the technical field of environmental protection solid waste treatment, and discloses a reaction system suitable for supercritical water oxidation intermittent operation, wherein a heating sleeve integrated with a reaction kettle is arranged outside the reaction kettle in a surrounding manner, a heat insulation sleeve is arranged outside the heating sleeve, and the reaction kettle and the heat insulation sleeve can be respectively lifted; the reaction kettle cover is provided with a gas oxidant inlet, an inert gas inlet, a pressure measuring port, a pressure release port, a safety valve mounting port and a stirrer motor; the stirrer motor is connected with a stirring rod, and stirring paddles are arranged at different positions of the stirring rod; a circulating cooling water coil of the reaction kettle is arranged in the reaction kettle. The utility model discloses when guarantee system long period steady operation, realize that reaction system rapid heating up reaches reaction condition to and rapid cooling reaches reation kettle and opens the condition, and then improve equipment utilization ratio, this reaction system can be used to solid useless supercritical water oxidation treatment technical development, process optimization, and the experiment of metal lacing film corrosion, has the multifunctionality.
Description
Technical Field
The utility model belongs to the technical field of the useless processing of environmental protection solid, specific theory relates to a supercritical water oxidation reaction system.
Background
Supercritical water is water in a special state at a temperature and pressure higher than its critical point (T374.2 ℃, P22.1 MPa). Supercritical water has the properties of liquid and gaseous water, has a dielectric constant similar to that of a nonpolar organic solvent, and has a high diffusion coefficient and low viscosity. Under the condition, the organic matter and the oxygen can be mutually dissolved with the supercritical water according to the maximum proportion, so that heterogeneous reaction is changed into homogeneous reaction, and the resistance of mass transfer and heat transfer is greatly reduced. Supercritical water Oxidation (SCWO) is a technology that uses the special property of water in supercritical state to make organic matter and oxidant quickly produce Oxidation reaction in supercritical water to completely decompose organic matter and convert it into harmless CO2、H2O and other small molecular compounds. The technology has unique effect on treating difficult-to-destroy toxic and harmful substances (such as dye waste, pharmaceutical waste, lubricant waste, insulating oil containing PCBs, radioactive mixed waste, polychlorinated biphenyl, volatile acid and the like), high-concentration difficult-to-degrade organic waste (sludge, paper mill slurry and the like), and military toxic substances (chemical weapons, rocket propellant, explosive and the like).
Although the supercritical water oxidation treatment technology has made great progress, the equipment pipeline is easy to block due to precipitation caused by the reduction of the solubility of inorganic salts in supercritical water and deposition of solid-phase insoluble substances in reactants during the use process; the phenomena of decomposition, coking, carbon deposition and the like of partial reaction zone materials in the heating process also easily cause the problems of equipment pipeline blockage, heat exchange efficiency reduction and the like; the supercritical water oxidation reaction conditions are severe, and the requirements on equipment such as pumps, valves and the like are high; and the source, composition and physical properties of the treated materials are complex, and a large amount of treatment effect evaluation experimental research and process condition optimization research need to be carried out for the supercritical water oxidation treatment process development of each pollutant; in addition, in the process of screening materials of supercritical water oxidation equipment, a large amount of experimental research on metal corrosion evaluation needs to be carried out.
In order to avoid the phenomena of coking, scaling, carbon deposition, blockage, corrosion, abrasion and the like of the treated materials in the supercritical water oxidation reaction process and damage to pipelines, valves, equipment facilities and the like of the system, the intermittent kettle type supercritical water oxidation reaction system is adopted to avoid pipeline transportation of the treated materials. However, the system needs to spend a large amount of heating time to raise the temperature when the experiment begins, so as to enable the reaction kettle to reach the required condition of the supercritical water oxidation reaction, and needs to spend a large amount of cooling time to enable the reaction kettle to reach the starting condition after the reaction is finished, so the equipment utilization rate is low.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that the equipment utilization rate of solving current intermittent type cauldron formula supercritical water oxidation reaction system is low is put forth effort, a reaction system suitable for supercritical water oxidation intermittent type operation is provided, in the long periodic steady operation of assurance system, it reaches reaction condition to realize reaction system rapid heating up, and rapid cooling reaches reation kettle and opens the condition, and then improve equipment utilization rate, this reaction system can be used to solid useless supercritical water oxidation treatment technical development, process optimization, and metal lacing film corrodes the experiment, has the multifunctionality.
The utility model discloses a following technical scheme realizes:
a reaction system suitable for supercritical water oxidation intermittent operation comprises a reaction kettle cover and a reaction kettle, wherein a heating sleeve is arranged outside the reaction kettle in a surrounding mode, and the heating sleeve and the reaction kettle are integrally arranged; a heat insulation sleeve is arranged outside the heating sleeve;
the reaction kettle cover is fixedly connected with the bracket through a reaction kettle cover fixing piece; the reaction kettle is connected with the bracket through a reaction kettle sliding block, the heat insulation sleeve is connected with the bracket through a heat insulation sleeve sliding block, and the reaction kettle and the heat insulation sleeve can respectively slide and be fixed up and down along the bracket;
the reaction kettle cover is provided with a gas oxidant inlet, an inert gas inlet, a pressure measuring port, a pressure releasing port and a safety valve mounting port; a stirrer motor, a circulating cooling water inlet pipeline of the reaction kettle and a circulating cooling water outlet pipeline of the reaction kettle are arranged on the reaction kettle cover;
the lower end of the stirrer motor is connected with a stirring rod, the stirring rod extends into the inner cavity of the reaction kettle, and stirring paddles are arranged at different positions;
a circulating cooling water coil of the reaction kettle is connected between the circulating cooling water inlet pipeline of the reaction kettle and the circulating cooling water outlet pipeline of the reaction kettle, and the circulating cooling water coil of the reaction kettle is arranged in the inner cavity of the reaction kettle.
Furthermore, a reaction kettle cover bolt hole is formed in the outer edge of the reaction kettle cover, and a reaction kettle bolt hole is formed in the outer edge of the top of the reaction kettle; the reaction kettle cover and the reaction kettle are hermetically connected through bolts.
Furthermore, a temperature measurement blind pipe is installed on the reaction kettle cover, the top of the temperature measurement blind pipe is fixedly connected with the reaction kettle cover in a penetrating mode, a temperature measurement port is formed in the top end of the temperature measurement blind pipe, the bottom of the temperature measurement blind pipe extends into the lower portion of the inner cavity of the reaction kettle, the temperature measurement blind pipe is used for being inserted into a thermocouple, and the temperatures of different positions of the inner cavity of the reaction kettle are monitored in real time by adjusting the insertion depth of the thermocouple.
Further, a cooling water inlet of the stirrer motor and a cooling water outlet of the stirrer motor are arranged on the stirrer motor.
Further, the stirring paddle is made of metal which needs to be subjected to metal corrosion experiments.
Furthermore, stirring paddles made of different metal materials are arranged at different positions of the stirring rod.
The utility model has the advantages that:
the reaction system suitable for supercritical water oxidation intermittent operation of the utility model realizes the quick temperature rise of the reaction system to reach the reaction condition and the quick temperature reduction to reach the opening condition of the reaction kettle while ensuring the long-period stable operation of the system, thereby improving the utilization rate of equipment; the reaction system can be widely used for solid-waste supercritical water oxidation treatment technology development, process optimization and metal coupon corrosion experiments, and has multiple functions.
The reaction kettle and the heating sleeve of the reaction system are integrated equipment, so that the reaction kettle can be quickly heated at the beginning of reaction, and the treated materials in the reaction kettle can quickly reach the supercritical water oxidation reaction condition; a detachable heat insulation sleeve is arranged outside the reaction kettle, a circulating cooling water coil is arranged in the reaction kettle, and cooling water is injected into the circulating cooling water coil while the heat insulation sleeve is detached after the reaction is finished, so that the reaction kettle can be quickly cooled to reach the opening condition of the reaction kettle; stirring paddle mounting holes with different heights are formed in the stirring rod, so that stirring paddles made of different metal materials can be mounted respectively, and the corrosion conditions of different metals can be tested in the process of a supercritical water oxidation experiment; inserting a temperature measuring blind pipe from the top of the reaction kettle to the lower part of the reaction kettle, and monitoring the temperature of different areas in the reactor in real time by controlling the insertion position of a thermocouple; the reaction kettle cover is connected with the bracket through the fixing piece, so that the looseness and the falling off of a pipeline connected to the reaction kettle cover due to the movement of the reaction kettle cover are avoided; and reation kettle and insulation cover pass through the slider and link to each other with the support, can freely remove from top to bottom, the installation, the dismantlement of reation kettle and insulation cover of being convenient for to accessible remote control realizes, avoids high temperature, high pressure or poisonous and harmful gas, liquid to experimenter's injury furthest.
Drawings
Fig. 1 is a schematic structural diagram of a reaction system suitable for supercritical water oxidation batch operation provided by the present invention.
In the above figures: 1. the device comprises a support, 2, a reaction kettle cover fixing piece, 3, a reaction kettle sliding block, 4, a heat insulation sleeve sliding block, 5, a base, 6, a stirrer motor, 7, a stirrer motor cooling water inlet, 8, a stirrer motor cooling water outlet, 9, a reaction kettle cover, 10, a reaction kettle cover bolt hole, 11, a reaction kettle circulating cooling water inlet pipeline, 12, a reaction kettle circulating cooling water outlet pipeline, 13, a gas oxidant inlet, 14, an inert gas inlet, 15, a temperature measuring port, 16, a pressure measuring port, 17, a pressure discharging port, 18, a safety valve mounting port, 19, a reaction kettle, 20, a reaction kettle bolt hole, 21, a temperature measuring blind pipe, 22, a reaction kettle circulating cooling water coil pipe, 23, a stirring rod, 24, a stirring paddle, 25, a heating sleeve and 26, wherein the temperature insulation sleeve is arranged on the support.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings:
as shown in FIG. 1, an embodiment of the utility model discloses a reaction system suitable for supercritical water oxidation intermittent type operation mainly includes support 1, reation kettle lid 9, reation kettle 19, heating jacket 25, insulation cover 26, reation kettle recirculated cooling water coil pipe 22, agitator motor 6, puddler 23, stirring rake 24.
The support 1 is fixed on the base 5 by the bottom, and the reaction kettle cover 9 is fixedly connected with the support 1 through the reaction kettle cover fixing part 2. The reaction kettle 19 and the heat insulation sleeve 26 are respectively connected with the bracket 1 through the reaction kettle slide block 3 and the heat insulation sleeve slide block 4 and can slide up and down along the bracket 1.
The reaction kettle cover 9 is provided with a reaction kettle cover bolt hole 10, a gas oxidant inlet 13, an inert gas inlet 14, a pressure measuring port 16, a pressure release port 17 and a safety valve mounting port 18.
The reaction kettle cover 9 is provided with a temperature measurement blind pipe 21, the top of the temperature measurement blind pipe 21 is fixedly connected with the reaction kettle cover 9 in a penetrating way, the top end of the temperature measurement blind pipe 21 is provided with a temperature measurement port 15, and the bottom of the temperature measurement blind pipe 5 extends into the lower part of the inner cavity of the reaction kettle 19. A thermocouple is inserted into the temperature measuring blind pipe 21 from the temperature measuring port 15 to measure the temperature of the inner cavity of the reaction kettle 19; by controlling the insertion positions of the thermocouples, the temperature uniformity of each region in the reaction kettle 19 can be monitored in real time.
The reaction kettle cover 9 is provided with a stirrer motor 6, a reaction kettle circulating cooling water inlet pipeline 11 and a reaction kettle circulating cooling water outlet pipeline 12.
The stirrer motor 6 is provided with a stirrer motor cooling water inlet 7 and a stirrer motor cooling water outlet 8. The lower end of the stirrer motor 6 is connected with a stirring rod 23 through an output shaft, the stirring rod 23 extends into the inner cavity of the reaction kettle 19, and stirring paddles 24 are arranged at different height positions of the stirring rod 23 in the reaction kettle 19. Stirring rake 24 is made by the metal that needs carry out the metal corrosion experiment to the stirring rake 24 that different metal material made is installed to different height position, thereby develops the metal corrosion experiment research of multiple material in reation kettle 19 inner chamber according to the experiment demand.
A circulating cooling water coil 22 of the reaction kettle is connected between the circulating cooling water inlet pipeline 11 of the reaction kettle and the circulating cooling water outlet pipeline 12 of the reaction kettle, and the circulating cooling water coil 22 of the reaction kettle is arranged in the inner cavity of the reaction kettle 19 and used for rapidly cooling substances in the reaction kettle after the experiment is finished.
The top end of the reaction kettle 19 is provided with an external expansion part, the external expansion part is provided with a reaction kettle bolt hole 20, and the reaction kettle bolt hole 20 corresponds to the reaction kettle cover bolt hole 10 and is connected with the reaction kettle cover 9 in a penetrating manner by adopting a bolt.
The heating sleeve 25 is arranged outside the reaction kettle 19 in a surrounding mode, and the reaction kettle 19 and the heating sleeve 25 are integrated equipment, so that the heating efficiency is improved; at the beginning of the experiment, the heating jacket 25 can rapidly raise the temperature of the reaction vessel 19 to the reaction temperature. Heating jacket 25 outside is equipped with the insulation cover 26 of liftable, after the experiment, separates heating jacket 25 and insulation cover 26 through reation kettle slider 3 and insulation cover slider 4 to reduce reation kettle 19's temperature fast.
The working process of the reaction system of the present invention is described in detail below with reference to two experimental examples:
example 1
Before the experiment begins, the heights of a reaction kettle 19 and a heat insulation sleeve 26 are reduced by adjusting a reaction kettle slide block 3 and a heat insulation sleeve slide block 4, the reaction kettle 19 is started, the reaction kettle 19 is added with metered organic waste liquid of reaction materials and liquid oxidant hydrogen peroxide in a direct feeding mode, and a stirring paddle 24 made of metal to be subjected to a metal corrosion experiment is fixed on a stirring rod 23 through a bolt; adjusting the reaction kettle slide block 3 and the heat insulation sleeve slide block 4 to lift the reaction kettle 19 and the heat insulation sleeve 26 until the reaction kettle 19 is in close contact with the reaction kettle cover 9, fixing the reaction kettle cover 9 and the reaction kettle 19 through the reaction kettle cover bolt holes 10 and the reaction kettle bolt holes 20 by bolts, and sealing the reaction kettle cover 9 and the reaction kettle 19; closing a gas oxidant inlet 13 and a pressure discharge port 17, opening an inert gas inlet 14, injecting metered inert gas nitrogen into a reaction kettle 19 at normal pressure, and then closing the inert gas inlet 14; cooling water is introduced into the stirring motor 6 through the cooling water inlet 7 of the stirrer motor and the cooling water outlet 8 of the stirrer motor, and the stirring motor 6 is started to drive the stirring rod 23 and the stirring paddle 24 to rotate; inserting a temperature thermocouple into the temperature measuring blind pipe 21 through the temperature measuring port 15; starting the heating sleeve 25 and heating the reaction kettle 19; the temperature and the pressure in the reaction kettle 19 are detected through a thermocouple inserted into a temperature measuring blind pipe 21 and a pressure gauge connected to a pressure measuring port 16; when the temperature is higher than 374.2 ℃ and the pressure is higher than 22.1MPa, the heating of the heating sleeve 25 is stopped after the designed reaction time is kept; adjusting the heat insulation sleeve slide block 4 to reduce the height of the heat insulation sleeve 26, exposing the heating sleeve 25 in the air, and introducing cooling water into the reaction kettle circulating cooling water coil 22 through the reaction kettle circulating cooling water inlet pipeline 11 and the reaction kettle circulating cooling water outlet pipeline 12 to reduce the temperature in the reaction kettle 19; when the temperature in the reaction kettle 19 is reduced to room temperature, stopping injecting cooling water into the cooling water inlet 7 of the stirrer motor and the circulating cooling water inlet 11 of the reaction kettle, starting the pressure release port 17, and releasing the pressure in the reaction kettle 19 to normal pressure; disassembling bolts fixed in the reaction kettle cover bolt holes 10 and the reaction kettle bolt holes 20, and reducing the height of the reaction kettle 19 by adjusting the reaction kettle slide block 4; taking out the reaction product in the reaction kettle 19 and the metal stirring paddle 24 fixed on the stirring rod 23 for further analysis and detection; the reaction vessel 19 and its internal components are cleaned.
Example 2
Before the experiment begins, the heights of a reaction kettle 19 and a heat insulation sleeve 26 are reduced by adjusting a reaction kettle slide block 3 and a heat insulation sleeve slide block 4, the reaction kettle 19 is started, the reaction kettle 19 is added with the metered organic waste liquid of the reaction materials in a direct feeding mode, and a stirring paddle 24 made of metal to be subjected to a metal corrosion experiment is fixed on a stirring rod 23 through a bolt; adjusting the reaction kettle slide block 3 and the heat insulation sleeve slide block 4 to lift the reaction kettle 19 and the heat insulation sleeve 26 until the reaction kettle 19 is in close contact with the reaction kettle cover 9, fixing the reaction kettle cover 9 and the reaction kettle 19 through the reaction kettle cover bolt holes 10 and the reaction kettle bolt holes 20 by bolts, and sealing the reaction kettle cover 9 and the reaction kettle 19; closing the inert gas inlet 14 and the pressure discharge port 17, opening the gas oxidant inlet 13, injecting metered gas oxidant oxygen into the reaction kettle 19 at normal pressure, and then closing the gas oxidant inlet 13; cooling water is introduced into the stirring motor 6 through the cooling water inlet 7 of the stirrer motor and the cooling water outlet 8 of the stirrer motor, and the stirring motor 6 is started to drive the stirring rod 23 and the stirring paddle 24 to rotate; inserting a temperature thermocouple into the temperature measuring blind pipe 21 through the temperature measuring port 15; starting the heating sleeve 25 and heating the reaction kettle 19; the temperature and the pressure in the reaction kettle 19 are detected through a thermocouple inserted into a temperature measuring blind pipe 21 and a pressure gauge connected to a pressure measuring port 16; when the temperature is higher than 374.2 ℃ and the pressure is higher than 22.1MPa, the heating of the heating sleeve 25 is stopped after the designed reaction time is kept; adjusting the heat insulation sleeve slide block 4 to reduce the height of the heat insulation sleeve 26, exposing the heating sleeve 25 in the air, and introducing cooling water into the reaction kettle circulating cooling water coil 22 through the reaction kettle circulating cooling water inlet pipeline 11 and the reaction kettle circulating cooling water outlet pipeline 12 to reduce the temperature in the reaction kettle 19; when the temperature in the reaction kettle 19 is reduced to room temperature, stopping injecting cooling water into the cooling water inlet 7 of the stirrer motor and the circulating cooling water inlet 11 of the reaction kettle, starting the pressure release port 17, and releasing the pressure in the reaction kettle 19 to normal pressure; disassembling bolts fixed in the reaction kettle cover bolt holes 10 and the reaction kettle bolt holes 20, and reducing the height of the reaction kettle 19 by adjusting the reaction kettle slide block 4; taking out the reaction product in the reaction kettle 19 and the metal stirring paddle 24 fixed on the stirring rod 23 for further analysis and detection; the reaction vessel 19 and its internal components are cleaned.
Although the preferred embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above embodiments, which are only illustrative and not restrictive, and those skilled in the art can make various changes without departing from the spirit and the scope of the invention as claimed.
Claims (6)
1. A reaction system suitable for supercritical water oxidation intermittent operation comprises a reaction kettle cover and a reaction kettle, and is characterized in that a heating sleeve is arranged outside the reaction kettle in a surrounding mode, and the heating sleeve and the reaction kettle are integrally arranged; a heat insulation sleeve is arranged outside the heating sleeve;
the reaction kettle cover is fixedly connected with the bracket through a reaction kettle cover fixing piece; the reaction kettle is connected with the bracket through a reaction kettle sliding block, the heat insulation sleeve is connected with the bracket through a heat insulation sleeve sliding block, and the reaction kettle and the heat insulation sleeve can respectively slide and be fixed up and down along the bracket;
the reaction kettle cover is provided with a gas oxidant inlet, an inert gas inlet, a pressure measuring port, a pressure releasing port and a safety valve mounting port; a stirrer motor, a circulating cooling water inlet pipeline of the reaction kettle and a circulating cooling water outlet pipeline of the reaction kettle are arranged on the reaction kettle cover;
the lower end of the stirrer motor is connected with a stirring rod, the stirring rod extends into the inner cavity of the reaction kettle, and stirring paddles are arranged at different positions;
a circulating cooling water coil of the reaction kettle is connected between the circulating cooling water inlet pipeline of the reaction kettle and the circulating cooling water outlet pipeline of the reaction kettle, and the circulating cooling water coil of the reaction kettle is arranged in the inner cavity of the reaction kettle.
2. The reaction system suitable for supercritical water oxidation batch operation of claim 1, wherein the outer edge of the reaction kettle cover is provided with reaction kettle cover bolt holes, and the outer edge of the top of the reaction kettle is provided with reaction kettle bolt holes; the reaction kettle cover and the reaction kettle are hermetically connected through bolts.
3. The reaction system suitable for supercritical water oxidation batch operation of claim 1, wherein the reaction kettle cover is provided with a temperature measurement blind pipe, the top of the temperature measurement blind pipe is fixedly connected to the reaction kettle cover in a penetrating manner, the top end of the temperature measurement blind pipe is provided with a temperature measurement port, the bottom of the temperature measurement blind pipe extends into the lower part of the inner cavity of the reaction kettle, the temperature measurement blind pipe is used for inserting a thermocouple, and the temperature of different positions of the inner cavity of the reaction kettle is monitored in real time by adjusting the insertion depth of the thermocouple.
4. The reaction system suitable for supercritical water oxidation batch operation of claim 1, wherein the stirrer motor is provided with a stirrer motor cooling water inlet and a stirrer motor cooling water outlet.
5. The reaction system suitable for supercritical water oxidation batch operation of claim 1, wherein the stirring paddle is made of metal to be subjected to metal corrosion experiment.
6. The reaction system suitable for supercritical water oxidation batch operation of claim 5, wherein the stirring rod is provided with stirring paddles made of different metal materials at different positions.
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| CN201920559800.5U CN210332642U (en) | 2019-04-23 | 2019-04-23 | Reaction system suitable for supercritical water oxidation intermittent operation |
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| CN201920559800.5U CN210332642U (en) | 2019-04-23 | 2019-04-23 | Reaction system suitable for supercritical water oxidation intermittent operation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110038504A (en) * | 2019-04-23 | 2019-07-23 | 中海油能源发展股份有限公司 | A kind of reaction system suitable for supercritical water oxidation intermittent duty |
| CN112452276A (en) * | 2020-11-05 | 2021-03-09 | 山东道恩钛业有限公司 | Laboratory reaction device for acidolysis of titanium slag and titanium ore |
-
2019
- 2019-04-23 CN CN201920559800.5U patent/CN210332642U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110038504A (en) * | 2019-04-23 | 2019-07-23 | 中海油能源发展股份有限公司 | A kind of reaction system suitable for supercritical water oxidation intermittent duty |
| CN112452276A (en) * | 2020-11-05 | 2021-03-09 | 山东道恩钛业有限公司 | Laboratory reaction device for acidolysis of titanium slag and titanium ore |
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