CN219233498U - Supercritical water oxidation treatment system - Google Patents
Supercritical water oxidation treatment system Download PDFInfo
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- CN219233498U CN219233498U CN202320082184.5U CN202320082184U CN219233498U CN 219233498 U CN219233498 U CN 219233498U CN 202320082184 U CN202320082184 U CN 202320082184U CN 219233498 U CN219233498 U CN 219233498U
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- 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
Abstract
The utility model provides a supercritical water oxidation treatment system, which belongs to the technical field of waste treatment and comprises a crushing module, a reaction module, a heat exchange module and a separation module; the reaction module comprises a dissolution preprocessor and a supercritical water oxidation reactor which are connected in sequence; the feeding end of the dissolution pre-processor is connected with the discharging end of the crushing module; the feeding end of the dissolution pretreatment device is also connected with a solvent storage tank; the liquid inlet end of the supercritical water oxidation reactor is connected with an oxidant storage tank; the feeding end of the heat exchange module is connected with the discharging end of the supercritical water oxidation reactor; the inflow end of the heat exchange flow of the heat exchange module is used for being connected with an external water supply system; the outflow end of the heat exchange flow of the heat exchange module is communicated with a heating coil of the dissolution pre-processor, and the heat exchange module is used for heating materials entering the dissolution pre-processor; the separation module is arranged at the outflow end of the heat exchange module. The supercritical water oxidation treatment system provided by the utility model can thoroughly decompose waste substances so as to avoid environmental pollution.
Description
Technical Field
The utility model belongs to the technical field of waste treatment, and particularly relates to a supercritical water oxidation treatment system.
Background
Substances such as waste cotton cloth, polyester fiber, waste rubber and the like generated in special use environments such as high toxicity, high risk and the like belong to dangerous wastes, cannot be recycled, and a large amount of toxic and harmful substances can be generated due to improper treatment, so that the environment pollution is caused, the life and health of people are endangered, and the ecological environment is influenced.
Therefore, it is necessary to perform innocent treatment of toxic substances such as waste cotton cloth, polyester fiber, and waste rubber. In the prior art, when waste fiber substances and rubber substances are treated, an incineration method is mostly adopted, and the method has the problems that heavy metals in the waste and harmful elements carried in a special high-risk operation process can be discharged along with gas, so that environmental pollution is caused.
Disclosure of Invention
The utility model aims to provide a supercritical water oxidation treatment system, which aims to solve the technical problem of serious pollution in the treatment process of waste substances.
In order to achieve the above purpose, the utility model adopts the following technical scheme: provided is a supercritical water oxidation treatment system including:
the crushing module is used for crushing the waste materials to a preset size;
the reaction module comprises a dissolution preprocessor and a supercritical water oxidation reactor which are connected in sequence; the feeding end of the dissolution pretreatment device is connected with the discharging end of the crushing module; the feeding end of the dissolution pretreatment device is also connected with a solvent storage tank; the liquid inlet end of the supercritical water oxidation reactor is connected with an oxidant storage tank;
the heat exchange module is connected with the feeding end of the supercritical water oxidation reactor; the inflow end of the heat exchange flow of the heat exchange module is used for being connected with an external water supply system; the outflow end of the heat exchange flow of the heat exchange module is communicated with the heating coil of the dissolution pre-processor, and the heat exchange module is used for heating materials entering the dissolution pre-processor; and
the separation module is arranged at the outflow end of the heat exchange module and is used for separating degradation products after heat exchange into gas substances and solid-liquid substances.
In one possible implementation manner, the crushing modules are provided with a plurality of groups, the plurality of groups of crushing modules are used for respectively crushing a plurality of waste materials, and the discharge ends of the crushing modules of each group are respectively connected with the dissolution pretreatment device.
In some embodiments, the comminution module comprises:
the crushing submodule is used for crushing the corresponding waste substances into crushed blocks;
the crushing sub-module is connected with the discharging end of the crushing sub-module, and the discharging end of the crushing sub-module is connected with the feeding end of the dissolution pretreatment device; the crushing submodule is used for crushing the crushed massive waste substances to the preset size.
Illustratively, the crushing submodule includes a plurality of stages of crushers connected in sequence, and the crushing submodule includes a plurality of stages of crushers connected in sequence.
In one possible implementation, a booster pump is connected between the dissolution pre-processor and the supercritical water oxidation reactor.
In some embodiments, a filtering device is arranged between the pressurizing pump and the supercritical water oxidation reactor.
In one possible implementation, the heat exchange module includes:
the first-stage heat exchange sub-module is connected with the discharge end of the supercritical water oxidation reactor at the feed end;
the feeding end of the secondary heat exchange sub-module is connected with the discharging end of the primary heat exchange sub-module, and the discharging end of the secondary heat exchange sub-module is connected with the separation module;
the inflow end of the heat exchange flow of the primary heat exchange sub-module and the inflow end of the heat exchange flow of the secondary heat exchange sub-module are both used for being connected with the external water supply system; the heat exchange flow outlet end of the primary heat exchange sub-module discharges high-temperature steam flow which is communicated with a heat medium channel of an external power generation system; and the heat medium flow is discharged from the outflow end of the heat exchange flow of the secondary heat exchange sub-module and is communicated with the heating coil of the dissolution pretreatment device.
In some embodiments, the primary heat exchange sub-module comprises at least one primary heat exchanger and the secondary heat exchange sub-module comprises at least one secondary heat exchanger.
In one possible implementation, the separation module includes:
the pressure reducing separator is provided with a feeding end communicated with the outflow end of the heat exchange module; the top of the depressurization separator is provided with a gas outlet, and the bottom of the depressurization separator is provided with a solid-liquid outlet;
a gas storage tank in communication with the gas outlet;
the solid-liquid storage tank is arranged below the depressurization separator and connected with the solid-liquid outlet.
In some embodiments, the gas storage tank is connected with a component detection device.
Compared with the prior art, the scheme disclosed by the embodiment of the application can be used for crushing the waste substances to a preset size so as to be dissolved in a solvent in the dissolution pretreatment device to form raw material slurry to be treated, and after the raw material slurry enters the supercritical water oxidation reactor and is mixed with an oxidant from the oxidant storage tank, supercritical water oxidation treatment is carried out in the supercritical water oxidation reactor to thoroughly degrade the waste substances, and degradation products formed after degradation are subjected to heat exchange and cooling treatment by the heat exchange module and enter the separation module to realize separation of gas substances and solid-liquid substances; the outflow end of the heat exchange flow of the heat exchange module is communicated with the heating coil of the dissolution pretreatment device, so that heat energy in degradation products can be circulated to the dissolution pretreatment device, the dissolution speed of waste materials in a solvent is improved, the treatment efficiency of the waste materials is improved, and the energy recycling is facilitated; the technical scheme provided by the application can thoroughly degrade the waste materials, and can avoid environmental pollution caused by the discharge of harmful elements in the waste materials along with the gas; and the treatment efficiency is high, and the energy utilization rate is high.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can 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 water oxidation treatment system according to an embodiment of the present utility model.
In the figure: 1. a crushing module; 11. a crusher; 12. a pulverizer; 2. a reaction module; 21. a dissolution pre-processor; 22. a supercritical water oxidation reactor; 23. a solvent storage tank; 24. an oxidant storage tank; 25. a pressurizing pump; 3. a heat exchange module; 31. a primary heat exchanger; 32. a secondary heat exchanger; 4. a separation module; 41. a depressurization separator; 42. a gas storage tank; 43. a solid-liquid storage tank; 5. an external water supply system; 6. an external power generation system; 7. waste material.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model 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 utility model.
It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present utility model and simplify the description, 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 should not be construed as limiting the present utility model.
The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying 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 utility model, the meaning of "a number" is two or more, unless explicitly defined otherwise.
Referring to fig. 1, a supercritical water oxidation treatment system provided by the present utility model will now be described. The supercritical water oxidation treatment system comprises a crushing module 1, a reaction module 2, a heat exchange module 3 and a separation module 4; the crushing module 1 is used for crushing the waste materials 7 to a preset size; the reaction module 2 comprises a dissolution preprocessor 21 and a supercritical water oxidation reactor 22 which are connected in sequence; the feeding end of the dissolution pre-processor 21 is connected with the discharging end of the crushing module 1; the feeding end of the dissolution pre-processor 21 is also connected with a solvent storage tank 23; the liquid inlet end of the supercritical water oxidation reactor 22 is connected with an oxidant storage tank 24; the feeding end of the heat exchange module 3 is connected with the discharging end of the supercritical water oxidation reactor 22; the inflow end of the heat exchange flow of the heat exchange module 3 is used for being connected with an external water supply system 5; the outflow end of the heat exchange flow of the heat exchange module 3 is communicated with a heating coil of the dissolution pre-processor 21, and the heat exchange module 3 is used for heating materials entering the dissolution pre-processor 21; the separation module 4 is arranged at the outflow end of the heat exchange module 3, and the separation module 4 is used for separating degradation products after heat exchange into gas substances and solid-liquid substances.
The solvent and the crushed waste 7 are dissolved in the dissolution pre-processor 21 to form a raw material slurry, and the waste 7 may be heated to promote dissolution during the dissolution; specifically, a heating coil is disposed inside the dissolution pre-processor 21 and is used for heating the mixture of the waste material 7 and the solvent, and the specific structure and the working principle of the dissolution pre-processor 21 belong to the prior art, and are not described herein.
It should be understood that the solvent storage tank 23 is used to introduce a solvent into the dissolution pre-processor 21 to dissolve the crushed waste 7; the oxidant reservoir 24 is used to introduce an oxidant into the supercritical water oxidation reactor 22 to degrade the waste material 7.
In addition, the raw material slurry formed after dissolution, the oxidizing agent and the reaction material in the supercritical water oxidation reactor 22 are mixed and then subjected to supercritical water oxidation treatment, so that the thorough degradation of pollutants can be realized.
It should be noted that, the raw material slurry is degraded by the supercritical water oxidation reactor 22 to form degradation products, and the heat exchange module 3 can exchange heat with the degradation products on one hand, so as to reduce the temperature of the degradation products; on the other hand, the heat-exchanged high-temperature heat exchange flow can be used for heating the materials entering the dissolution pre-processor 21; specifically, the heat exchange flow of the heat exchange module 3 adopted in the application specifically refers to water flow for heat exchange with the degradation product, in the actual heat exchange process, low-temperature water provided by the external water supply system 5 is refrigerant flow, and forms heat exchange flow after entering the heat exchange module 3, the heat exchange flow forms water flow with higher temperature after heat exchange with the degradation product, namely heat medium flow, and the heat medium flow can be communicated with the heating coil of the dissolution pre-processor 21.
Compared with the prior art, the supercritical water oxidation treatment system provided by the utility model has the advantages that waste materials 7 can be crushed to a preset size, so that the crushed waste materials 7 are dissolved in a solvent in the dissolution pretreatment device 21 to form raw material slurry to be treated, the raw material slurry enters the supercritical water oxidation reactor 22 and is mixed with an oxidant from the oxidant storage tank 24, supercritical water oxidation reaction is carried out in the supercritical water oxidation reactor 22 to realize thorough degradation of the waste materials 7, degradation products formed after degradation are subjected to heat exchange and cooling treatment by the heat exchange module 3 and then enter the separation module 4 to realize separation of gas materials and solid-liquid materials; the outflow end of the heat exchange flow of the heat exchange module 3 is communicated with the heating coil of the dissolution pre-processor 21, so that heat energy in degradation products can be circulated to the dissolution pre-processor 21, the dissolution speed of the waste materials 7 in a solvent is improved, the treatment efficiency of the waste materials 7 is improved, and the energy recycling is facilitated; the technical scheme provided by the application can thoroughly degrade the waste material 7, and can avoid environmental pollution caused by the discharge of harmful elements in the waste material 7 along with gas; and the treatment efficiency is high, and the energy utilization rate is high.
Referring to fig. 1, in some possible embodiments, the pulverizing modules 1 are provided with multiple groups, the multiple groups of pulverizing modules 1 are used for respectively pulverizing multiple waste materials 7, and the discharge ends of the pulverizing modules 1 of each group are respectively connected to the dissolution pre-processor 21.
Alternatively, the waste material 7 may be waste rubber material or waste fiber material, and different types of waste material 7 correspond to different solvents, for example, when the waste material 7 is waste rubber material, the waste rubber material adopts organic solvent as solvent, and the crushed waste rubber material is mixed with the organic solvent from the solvent storage tank 23 and then enters the dissolution pre-processor 21, so that the waste rubber material is dissolved in the organic solvent, and the dissolution phenomenon is a physical phenomenon; further, when the dissolution of the particles of the waste rubber substance is performed, the temperature in the dissolution pretreatment vessel 21 is kept at 20 ℃ or lower below the boiling point of the solvent, and the waste rubber substance is dissolved to form a slurry having fluidity.
When the waste material 7 is waste fiber material, the waste fiber material adopts alkali liquor as solvent, and after the crushed waste fiber material is mixed with NaOH solution from an alkali liquor storage tank, hydrolysis reaction is carried out at 40-60 ℃, namely, the waste fiber material and the alkali liquor are subjected to chemical reaction, the waste fiber material is hydrolyzed to generate organic matters, the viscosity of the slurry is improved, the stability of the mixed slurry is improved, and the stirred and homogenized slurry is formed.
When the waste material 7 is a mixture formed by waste rubber material and waste fiber material, alkali liquor is used as solvent, and the waste fiber material undergoes hydrolysis reaction at 40-60 ℃, so that the viscosity of the slurry is improved, and the dispersibility and stability of fine particles of the waste rubber material in the slurry can be improved at the same time, so that the raw material slurry which can be conveyed and rapidly degraded is formed.
Referring to fig. 1, in some embodiments, the comminution module 1 comprises a comminution sub-module and a comminution sub-module; the crushing submodule is used for crushing the corresponding waste material 7 into crushed blocks; the feeding end of the crushing sub-module is connected with the discharging end of the crushing sub-module, and the discharging end of the crushing sub-module is connected with the feeding end of the dissolution pre-processor 21; the crushing submodule is used for crushing the crushed massive waste material 7 to a preset size.
The predetermined size after the waste material 7 of different types is crushed is not the same, and the crushing can be performed according to the type of the material.
The waste fiber materials are crushed into materials with granularity below 10 meshes by large-sized materials after being processed by a crushing sub-module and a crushing sub-module; the waste rubber material is crushed into material with granularity below 100 mesh by the massive material after being treated by the crushing sub-module and the crushing sub-module.
Referring to fig. 1, an exemplary crushing submodule includes a plurality of stages of crushers 11 connected in series, and a crushing submodule includes a plurality of stages of crushers 12 connected in series.
By arranging the multistage crusher 11 and the crusher 12 so as to crush the waste material 7 thoroughly, namely, treating the waste material 7 into small blocks which are easy to be mixed with the solvent to form waste liquid, the influence of residual large blocks on the subsequent mixing reaction of the waste material 7 and the solvent and the influence on the treatment efficiency of the waste material 7 are avoided.
Referring to fig. 1, in some possible embodiments, a pressurizing pump 25 is connected between the dissolution pre-processor 21 and the supercritical water oxidation reactor 22.
The pressurizing pump 25 is used to pressurize and convey the waste liquid formed in the dissolution pre-processor 21 to the supercritical water oxidation reactor 22.
Optionally, a filtering device is arranged between the pressurizing pump 25 and the supercritical water oxidation reactor 22. By arranging the filtering device, the large waste materials can be intercepted, so that the pressurizing pump 25 is prevented from being blocked, and the treatment efficiency is prevented from being influenced.
Referring to fig. 1, in some possible embodiments, the heat exchange module 3 includes a primary heat exchange sub-module and a secondary heat exchange sub-module; the feeding end of the primary heat exchange sub-module is connected with the discharging end of the supercritical water oxidation reactor 22; the feeding end of the secondary heat exchange sub-module is connected with the discharging end of the primary heat exchange sub-module, and the outflow end is connected with the separation module 4; the inflow end of the heat exchange flow of the primary heat exchange sub-module and the inflow end of the heat exchange flow of the secondary heat exchange sub-module are both used for being connected with an external water supply system 5; the outflow end of the heat exchange flow of the primary heat exchange sub-module discharges high-temperature steam flow which is communicated with a heat medium channel of an external power generation system 6; the heat exchange flow of the secondary heat exchange sub-module is discharged from the outflow end, and the heat medium flow is communicated with the heating coil of the dissolution pre-processor 21.
Specifically, in the application, water flow is used as a heat exchange medium, refrigerant water flow enters the heat exchange module 3 to form heat exchange flow, specifically, the refrigerant flow forms high-pressure steam flow after heat exchange in the primary heat exchange sub-module, and the high-pressure steam flow can be used in the external power generation system 6; the refrigerant flow forms a heat medium flow after heat exchange in the secondary heat exchange sub-module and is used for being introduced into a heating coil of the dissolution pre-processor 21 so as to promote the solvent to dissolve the waste material 7.
Alternatively, the low-temperature water discharged from the dissolution pre-processor 21 may be recycled to the heat exchange module 3 for heat exchange.
Referring to fig. 1, in some embodiments, the primary heat exchange sub-module includes at least one primary heat exchanger 31 and the secondary heat exchange sub-module includes at least one secondary heat exchanger 32.
By arranging the plurality of primary heat exchangers 31 and the plurality of secondary heat exchangers 32, degradation products after supercritical water oxidation reaction can be cooled step by step so as to recycle heat.
Referring to fig. 1, in some possible embodiments, the separation module 4 includes a depressurization separator 41, a gas storage tank 42, and a solid-liquid storage tank 43; the feeding end of the depressurization separator 41 is communicated with the discharging end of the heat exchange module 3; the top of the depressurization separator 41 is provided with a gas outlet, and the bottom is provided with a solid-liquid outlet; the gas storage tank 42 communicates with the gas outlet; the solid-liquid storage tank 43 is disposed below the pressure-reducing separator 41 and connected to the solid-liquid outlet.
The depressurization separator 41 is used for separating gas from liquid of the degradation products after heat exchange, specifically, the formed gas such as carbon dioxide, oxygen, nitrogen and the like enters the gas storage tank 42 through the gas outlet at the top, and the formed solid-liquid substance enters the solid-liquid storage tank 43 through the solid-liquid outlet at the bottom so as to be intensively treated.
Referring to fig. 1, in some embodiments, a component detection device is connected to the gas storage tank 42. Specifically, the detection device is used for detecting the components of the exhaust gas and avoiding the discharge of toxic substances; the specific structure and the working principle of the detection device belong to the prior art, and are not described in detail herein.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. A supercritical water oxidation processing system comprising:
the crushing module is used for crushing the waste materials to a preset size;
the reaction module comprises a dissolution preprocessor and a supercritical water oxidation reactor which are connected in sequence; the feeding end of the dissolution pretreatment device is connected with the discharging end of the crushing module; the feeding end of the dissolution pretreatment device is also connected with a solvent storage tank; the liquid inlet end of the supercritical water oxidation reactor is connected with an oxidant storage tank;
the heat exchange module is connected with the feeding end of the supercritical water oxidation reactor; the inflow end of the heat exchange flow of the heat exchange module is used for being connected with an external water supply system; the outflow end of the heat exchange flow of the heat exchange module is communicated with the heating coil of the dissolution pre-processor, and the heat exchange module is used for heating materials entering the dissolution pre-processor; and
the separation module is arranged at the outflow end of the heat exchange module and is used for separating degradation products after heat exchange into gas substances and solid-liquid substances.
2. The supercritical water oxidation processing system according to claim 1 wherein the pulverizing modules are provided with a plurality of groups, the plurality of groups of pulverizing modules are used for respectively pulverizing a plurality of waste materials, and the discharge ends of the pulverizing modules of each group are respectively connected with the dissolution pretreatment processor.
3. The supercritical water oxidation processing system according to claim 2 wherein the comminution module comprises:
the crushing submodule is used for crushing the corresponding waste substances into crushed blocks;
the crushing sub-module is connected with the discharging end of the crushing sub-module, and the discharging end of the crushing sub-module is connected with the feeding end of the dissolution pretreatment device; the crushing submodule is used for crushing the crushed massive waste substances to the preset size.
4. The supercritical water oxidation processing system according to claim 3 wherein the crushing submodule comprises a plurality of stages of crushers connected in sequence and the crushing submodule comprises a plurality of stages of crushers connected in sequence.
5. The supercritical water oxidation processing system according to claim 1 wherein a booster pump is connected between the dissolution pre-processor and the supercritical water oxidation reactor.
6. The supercritical water oxidation processing system according to claim 5 wherein a filter device is provided between the pressurizing pump and the supercritical water oxidation reactor.
7. The supercritical water oxidation processing system according to claim 1 wherein the heat exchange module comprises:
the first-stage heat exchange sub-module is connected with the discharge end of the supercritical water oxidation reactor at the feed end;
the feeding end of the secondary heat exchange sub-module is connected with the discharging end of the primary heat exchange sub-module, and the discharging end of the secondary heat exchange sub-module is connected with the separation module;
the inflow end of the heat exchange flow of the primary heat exchange sub-module and the inflow end of the heat exchange flow of the secondary heat exchange sub-module are both used for being connected with the external water supply system; the heat exchange flow outlet end of the primary heat exchange sub-module discharges high-temperature steam flow which is communicated with a heat medium channel of an external power generation system; and the heat medium flow is discharged from the outflow end of the heat exchange flow of the secondary heat exchange sub-module and is communicated with the heating coil of the dissolution pretreatment device.
8. The supercritical water oxidation processing system according to claim 7 wherein the primary heat exchange sub-module comprises at least one primary heat exchanger and the secondary heat exchange sub-module comprises at least one secondary heat exchanger.
9. The supercritical water oxidation processing system according to claim 1 wherein the separation module comprises:
the pressure reducing separator is provided with a feeding end communicated with the outflow end of the heat exchange module; the top of the depressurization separator is provided with a gas outlet, and the bottom of the depressurization separator is provided with a solid-liquid outlet;
a gas storage tank in communication with the gas outlet;
the solid-liquid storage tank is arranged below the depressurization separator and connected with the solid-liquid outlet.
10. The supercritical water oxidation processing system according to claim 9 wherein a component detection device is connected to the gas storage tank.
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| CN202320082184.5U CN219233498U (en) | 2023-01-12 | 2023-01-12 | Supercritical water oxidation treatment system |
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| CN202320082184.5U CN219233498U (en) | 2023-01-12 | 2023-01-12 | Supercritical water oxidation treatment system |
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