CN202131145U - Supercritical water oxidation reactor capable of supplementing heat by using auxiliary fuel - Google Patents
Supercritical water oxidation reactor capable of supplementing heat by using auxiliary fuel Download PDFInfo
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- CN202131145U CN202131145U CN201120192841U CN201120192841U CN202131145U CN 202131145 U CN202131145 U CN 202131145U CN 201120192841 U CN201120192841 U CN 201120192841U CN 201120192841 U CN201120192841 U CN 201120192841U CN 202131145 U CN202131145 U CN 202131145U
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- end cap
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Abstract
The utility model discloses a supercritical water oxidation reactor capable of supplementing heat by using auxiliary fuel, which can supply heat required by the reaction by using the auxiliary fuel and can efficiently mix materials, fuel and an oxidizing agent (air or oxygen) through jet flow with different direction so as to improve oxidation efficiency. The reactor adopts an evaporation wall and can type reflux combined structure, can effectively utilize volume of a reaction kettle to increase reaction time and can also prevent blockage caused by salt deposition to effectively reduce corrosion of the reactor. The bottom temperature of the reactor can be regulated and controlled accurately through a cooling water pipeline at the bottom of the reactor, so that safe operation of equipment can be guaranteed. The reactor can effectively solve the economic problem of a supercritical water reaction system by supplementing the auxiliary fuel, is easy in industrial amplification, and can be widely applied to harmless treatment of high-concentration organic liquid, such as organic wastewater/garbage percolate and the like, which is difficult to biodegrade.
Description
Affiliated field
The utility model belongs to environment protection and chemical field, particularly utilizes supercritical water the useless organic liquids such as organic waste water/percolate of high density bio-refractory to be carried out a kind of super-critical water treatment reactor of innocent treatment procedure as reaction medium.
Background technology
Supercritical water be meant temperature and pressure all be higher than its stagnation point (T=374.2 ℃, the water of special state P=22.1MPa).Supercritical water has the character of liquid and vaporous water concurrently, and specific inductivity is similar to non-polar organic solvent, has high spread coefficient and low viscosity.Under this state, organism, oxygen can dissolve each other by maximum ratio and supercritical water, thereby make inhomogeneous reaction become homogeneous reaction, have reduced the resistance of mass transfer, heat transfer greatly.And the solubleness of inorganic salts in supercritical water is extremely low, easily it is separated.Therefore but the characteristic of this continually varying density of supercritical water, low electrostatic media constant, low viscosity makes it become a kind of ideal response medium with high diffusibility, high resolution.Can utilize the variation of its temperature and pressure to control reaction environment, concerted reaction speed and chemical equilibrium, regulate selectivity of catalyst etc.
Supercritical water oxidation technology (Supercritical Water Oxidation; Be called for short SCWO) be the special property of utilizing water under supercritical state, to be had; Make organism and oxygenant that oxidizing reaction take place rapidly in supercritical water and come thorough decomposing organic matter, it is changed into harmless CO fully
2, H
2And H
2Micromolecular compounds such as O.The SCWO technology is for handling hazardous and noxious substances (like dyestuff refuse, pharmacy refuse, lubricant refuse, the transformer oil that contains PCBs, radioactivity mixed waste, polychlorobiphenyl, easy volatile acid etc.), the organic waste (mud, paper mill slip etc.) of high-concentration hardly-degradable, the military harmful toxic matter (chemical weapons that those difficulties disappear and ruin; Rocket propellant, explosive etc.) has unique effect.
Though the supercritical water treatment technology has obtained very much progress; About using the testing apparatus and the commercial apparatus of supercritical water technology; Have relevant report at present both at home and abroad; But still have problems such as the blockage problem that salt sedimentation causes in the reactor drum to be solved, high erosion rate problem and performance driving economy, be in particular in:
1) material corrosion problem.Because supercritical water reaction apparatus is under high temperature, the condition of high voltage, especially contains halogen, sulphur or phosphorus etc. in the organism, can produce acid after in supercritical water, decomposing, cause the strong corrosion of equipment; Even have better corrosion proof nickel-base material, in supercritical water, particularly in subcritical water, still suffer serious corrosion easily.
2) salt sedimentation problem.Water at normal temperature is a kind of fine solvents to most of salt, and solubleness is bigger.On the contrary, most of salt solubleness in low-density supercritical water is minimum.When subcritical solution is heated to supercritical temperature rapidly; Because the solubleness of salt reduces significantly, has a large amount of depositions to separate out, the sedimentary salt device that can induce reaction is imported and exported line clogging; The normal operation that this has not only influenced reactor drum also can bring the potential hidden trouble of equipment.
3) economy problems.Though the SCWO process is a thermopositive reaction, when organic massfraction reaches 2～3%, just can realize self-heating, in the device start process, still need external heat source that it is carried out concurrent heating.The type of heating overwhelming majority of at present external supercritical water oxidation plants adopts the electrically heated form, and this not only causes the facility investment expense huge, and the heavy industrialization application of this technology has been caused huge obstacle.
Summary of the invention
The purpose of the utility model provides a kind of auxiliary fuel that utilizes as the method for the anaplerotic reaction heat new texture overcritical water oxidization reactor with the problem that solves the supply of supercritical water oxidation process energy, and then improves the economy of device operational process.In addition, require this reactor drum easy disassembly, load easily and catalyst changeout more, be easy to maintenance and safeguard, can safe and reliable operation, have multifunctionality.
For reaching above purpose, the utility model takes following technical scheme to be achieved:
A kind of overcritical water oxidization reactor that utilizes auxiliary fuel supply heat; Comprise kettle and catalyst tank wherein, it is characterized in that the kettle upper end is fixedly connected with end cap; Space between end cap and the top, catalyst tank case top is a high temperature combustion zone, and the catalyst tank below is the salt disengaging zone; The autoclave body bottom center is provided with the solid salt relief outlet, and solid salt relief outlet top is subcritical dissolved salt district; Cooling water inlet and liquid salt relief outlet that autoclave body bottom is provided with the product outlet, is communicated with subcritical dissolved salt district; Cool air inlet and material inlet are set on the end cap to be communicated with high temperature combustion zone through axial channel; End cap is provided with the high temperature combustion zone UNICOM in auxiliary fuel supply structure and the end cap; Catalyst tank is fixed on around the vertical section of a pipe core, and the tilting section of pipe core is communicated with the outlet of the product of autoclave body bottom; Be provided with the tubular porous evaporator wall near inner wall of kettle.
In the such scheme, said auxiliary fuel supply structure comprises the fuel core pipe that the end cap center is provided with, and axially puts in end cap in the high temperature combustion zone top; Between fuel core pipe periphery and the end cap annular space is arranged, the end cap side has hot air inlet through horizontal hole and annular space UNICOM; Fuel core pipe puts in end cap portions and divides the tube wall outside to be provided with helical fin.
End cap cooling annular groove can be set below end cap, comprise being used for air cooled inner groove and being used for material refrigerative outer groove that there are two circle holes the inner groove bottom surface, the downward oblique fuel core tube side of inner ring hole is to, the downward oblique porous evaporator wall direction of cycle hole; The outer groove bottom surface have the downward oblique fuel core tube side in a circle hole to.
Described fuel core pipe lower end outlet is blind hole structure, when fuel flows out blind hole through around the tube wall tiltedly 4 perforates of lower direction to around form jet.
Said catalyst tank is a cylindrical shell, and this cylindrical shell bottom inlet and cylindrical shell top exit are the porous plectane, establishes dismountable spherical case lid on its top porous plectane.
Compare with existing overcritical water oxidization reactor, the advantage of the utility model is:
1, the utility model is provided with the reactor drum end cap that multithread is threaded a pipe to issuable high temperature after the fuel combustion.Cold conditions oxygenant and material can both be built cooling effect to reactor end.Further, the cooling annular groove is set below the reactor drum end cap, can high temperature combustion zone and end cap lower plane be effectively kept apart.And be furnished with the pod apertures of different directions below the annular groove in cooling; Make fuel, oxygenant and material realize sufficient jets collision from different perspectives in the combustion zone; Promote the high efficient mixed and the burning of fuel; The high temperature of emitting during the effectively required heat of anaplerotic reaction, and burning can thoroughly decompose hard-degraded substances such as ammonia nitrogens effectively.
2, the utility model end cap week side have hot air inlet through outside horizontal direction duct and the fuel core pipe and the annular space between the end cap be communicated with, as high temperature oxidation agent transfer line.Core pipe bottom is provided with helical fin, and outlet at bottom is a blind hole structure, and the oblique bottom of fuel is sprayed all around, enlarges burning area, the jets collision of efficient realization and oxidant fluid.
3, at reactor bottom the cooling water inlet is set,, can accurately controls salt discharge district temperature through regulating the cooling water flow size.Work as reactor bottom desalination pipeline simultaneously and stop up, can be through regulating cooling water flow to improve the solvability of bottom salt; When reacting device overtemperature, super high pressure accident, can feed water coolant and reduce the inside reactor temperature and pressure fast, guarantee the safe operation of equipment.
4, inside reactor catalyst tank and spherical case lid are set and by the form fix of welding on pipe core, the catalyst tank entrance and exit is porous plate.The reactor drum end cap with in the seal cavity that the kettle of catalyst tank combines the back to form is set, form many deflector types structure, can overcome the long shortcoming of tubular reactor size, effectively utilize the reaction kettle body internal volume, increase the reaction times.
The overcritical water oxidization reactor of the disclosed fuel make up heat of the utility model can be widely used in the harmless treatment and the recycling process of the useless organic liquids such as organic waste water/percolate of high density, bio-refractory.
Description of drawings
Fig. 1 utilizes the structural representation of the super-critical water treatment reactor of auxiliary fuel supply heat for the utility model.Wherein 1, holding bolt; 2, catalyst tank; 3, kettle; 4, porous evaporator wall; 5, liquid salt relief outlet; 6, solid salt relief outlet; 7, product outlet; 8, cooling water inlet; 9, evaporation wall water inlet; 10, end cap cooling annular groove; 11, hot air inlet; 12, fuel core pipe; 13, cool air inlet; 14, material inlet; 15, end cap; 16, high temperature combustion zone; 17, subcritical dissolved salt district; 18, desalination district temperature-measuring casing; 19, evaporation wall ring cavity temperature-measuring casing; 20, reactor drum end cap temperature-measuring casing; 21, salt disengaging zone; 22, pipe core.
Embodiment
As shown in Figure 1, a kind of overcritical water oxidization reactor that utilizes auxiliary fuel supply heat combines to form the confined reaction space by end cap 15 and kettle 3 through holding bolt 1.Space between end cap 15 and the catalyst tank dome top is a high temperature combustion zone 16, and the catalyst tank lower zone is salt disengaging zone 21, and the autoclave body bottom center is provided with solid salt relief outlet 6, and its upper area is subcritical dissolved salt district 17.
Fuel core pipe adopts corrosion-resistant, high temperature alloy material; Fuel core pipe puts in end cap portions and divides the tube wall outside to be provided with helical fin (not drawing among the figure); Make oxygenant (air or oxygen) fluid produce eddy flow to promote itself and the high efficient mixed of fuel, the while can make things convenient for the installation and the location of core pipe.Cool air inlet 13 (around end cap central bore, being uniformly distributed with four), material inlet 14 (being uniformly distributed with four along the end cap central bore periphery) also are set on the end cap; Be communicated with high temperature combustion zone 16 through axial channel, LTO agent (freezing air or oxygen) is through cool air inlet 13 inflow reactors.The cold conditions material is got in the reactor drum by material inlet 14.Cold conditions material and LTO agent can both be played the effect of end cap refrigerative.The end cap temperature-measuring casing 20 that has armoured thermocouple on the end cap axially puts in the end cap, to measure the conversion zone temperature.
Cause the potential safety hazard of end cap overtemperature in order to prevent high temperature combustion zone 16 from possibly emit too high heat, end cap cooling annular groove 10 is set below reactor drum end cap 15.Annular groove is welded on the end cap below; Inner groove is air cooling annular groove (relatively cool air inlet passage), and two circle ducts are arranged at the annular groove bottom, the downward oblique fuel core tube side of inner ring hole to; The oblique porous evaporator wall direction of cycle hole; The former offers the fuel secondary air, guarantees full combustion of fuel, and the latter offers material and carries out oxidation wholly or in part; Outer groove is material cooling annular groove (a material inlet passage relatively); The bottom surface have the downward oblique fuel core tube side in a circle hole to; Low-temperature material is effectively wrapped up flame zone, reduce high temperature fluid, also can effectively cool off end cap to the influence that evaporation wall caused.The reactor drum end cap is provided with temperature-measuring casing 20 and built-in armoured thermocouple carries out temperature survey.This structure can make material, cold conditions oxygenant, high temperature oxidation agent and fuel fluid form jets collision from different directions, carries out efficiently mixed and forms the high-temperature zone, helps the removal of difficult oxidizing substance (for example ammonia nitrogen etc.).
Be provided with tubular porous evaporator wall 4 near kettle 3 inwalls, the kettle arranged outside has evaporation wall water inlet 9 and temperature-measuring casing 19 to be communicated in porous evaporator wall and the formed ring cavity of inner wall of kettle.Behind evaporation wall water inlet 9 entering evaporation wall ring cavities, pass porous evaporator wall and form even moisture film after the clean water preheating, can effectively prevent salt sedimentation and corrosion in the inboard.Temperature-measuring casing 19 built-in armoured thermocouples are measured the temperature distribution with monitoring reaction device kettle wall temperature, evaporation wall wall temperature and inside reactor reacting fluid, with the adjusting that realizes the subsequent reactions condition, the Gradient distribution and the safety control of temperature.
Catalyst tank 2 is fixed on around pipe core 22 vertical sections, and the tilting section of pipe core is communicated with the product of autoclave body bottom outlet 7.Catalyst tank 2 is a cylindrical shell, and bottom inlet and top exit are the porous plectane.Its top exit porous plectane top be provided with can be for convenience detach spherical case lid, adopt screw retention on the catalyst tank cylindrical shell.Can be provided with suspension ring on this sphere case lid, the mechanical work when making things convenient for catalyst change.Case lid is kept apart combustion zone and catalytic domain, and institute's liberated heat can carry out concurrent heating to the case lid inner fluid effectively in the combustion zone to make reacting fluid, to satisfy the flow process requirement.
Kettle 3 bottoms are provided with cooling water inlet 8, can in reaction process, regulate cooling water inflow with control dissolved salt district temperature according to processing condition.Also have two effects simultaneously: (i) stop up the solvability of salt bottom improving through the feeding of water coolant when reactor bottom desalination pipeline; (ii) when reacting device overtemperature, super high pressure accident, can feed water coolant and reduce the inside reactor temperature and pressure fast, guarantee the safe operation of equipment.The desalination zone that desalination district temperature-measuring casing 18 and built-in armoured thermocouple are deep into catalyzer casing bottom is being set near the subcritical dissolved salt district 17 and near the salt disengaging zone 21, salt disengaging zone 21 and storage salt district 17 temperature are being detected.The outlet of kettle 3 bottom centre is for solid salt relief outlet 6, and according to the actually operating situation, intermittent type is discharged insoluble salt.Solvability salt is discharged reactor drum through liquid salt relief outlet 5 continous ways.
The concrete working process of the utility model is that fuel and oxygenant are through getting into inside reactor through fuel core pipe 12 and core pipe outside annular space respectively behind the high temperature preheating.When temperature reached the fuel firing point, fuel and oxygenant burning were rapidly emitted big calorimetric.Material through low-temperature prewarming gets in the reactor drum end cap air ring groove 10 through material inlet 14 and cool air inlet 13 respectively with the oxygenant of a part without preheating.Material, oxygenant and fuel carry out jet, head-on collision from different directions, carry out the high efficient mixed heat release in the combustion zone.Reacting fluid flows to the reactor drum below through behind the high temperature combustion zone from the annular space between the catalyst tank outside and the evaporation wall, and solid salt separates in desalination district 21 with reacting fluid under action of gravity.After carrying out the gravity desalting process, fluid flows to beds top after getting into catalyst tank by catalyst tank lower end porous plectane, after the catalytic oxidation process, gets into pipe core 22, exports 7 outflow reactors through product from top to bottom.Solid salt after the separation gets into dissolved salt district 17, and discharges through the solid salt relief outlet 6 of bottom, and solvability salt is discharged reactor drum through liquid salt relief outlet 5.
Claims (5)
1. overcritical water oxidization reactor that utilizes auxiliary fuel supply heat; Comprise kettle and catalyst tank wherein, it is characterized in that the kettle upper end is fixedly connected with end cap; Space between end cap and the top, catalyst tank case top is a high temperature combustion zone, and the catalyst tank below is the salt disengaging zone; The autoclave body bottom center is provided with the solid salt relief outlet, and solid salt relief outlet top is subcritical dissolved salt district; Cooling water inlet and liquid salt relief outlet that autoclave body bottom is provided with the product outlet, is communicated with subcritical dissolved salt district; Cool air inlet and material inlet are set on the end cap to be communicated with high temperature combustion zone through axial channel; End cap is provided with the high temperature combustion zone UNICOM in auxiliary fuel supply structure and the end cap; Catalyst tank is fixed on around the vertical section of a pipe core, and the tilting section of pipe core is communicated with the outlet of the product of autoclave body bottom; Be provided with the tubular porous evaporator wall near inner wall of kettle.
2. the overcritical water oxidization reactor that utilizes auxiliary fuel supply heat as claimed in claim 1 is characterized in that, said auxiliary fuel supply structure comprises that the fuel core tubular axis of end cap center setting is to putting in end cap in the high temperature combustion zone top; Between fuel core pipe periphery and the end cap annular space is arranged, the end cap side has hot air inlet through horizontal hole and annular space UNICOM; Fuel core pipe puts in end cap portions and divides the tube wall outside to be provided with helical fin.
3. the overcritical water oxidization reactor that utilizes auxiliary fuel supply heat as claimed in claim 1; It is characterized in that; End cap cooling annular groove is set below end cap, comprises being used for air cooled inner groove and being used for material refrigerative outer groove that there are two circle holes the inner groove bottom surface; The downward oblique fuel core tube side of inner ring hole is to, the downward oblique porous evaporator wall direction of cycle hole; The outer groove bottom surface have the downward oblique fuel core tube side in a circle hole to.
4. the overcritical water oxidization reactor that utilizes auxiliary fuel supply heat as claimed in claim 2; It is characterized in that; Described fuel core pipe lower end outlet is blind hole structure, when fuel flows out blind hole through around the tube wall tiltedly 4 perforates of lower direction to around form jet.
5. the overcritical water oxidization reactor that utilizes auxiliary fuel supply heat as claimed in claim 1; It is characterized in that; Said catalyst tank is a cylindrical shell, and this cylindrical shell bottom inlet and cylindrical shell top exit are the porous plectane, establishes dismountable spherical case lid on its top porous plectane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120192841U CN202131145U (en) | 2011-06-09 | 2011-06-09 | Supercritical water oxidation reactor capable of supplementing heat by using auxiliary fuel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120192841U CN202131145U (en) | 2011-06-09 | 2011-06-09 | Supercritical water oxidation reactor capable of supplementing heat by using auxiliary fuel |
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| CN202131145U true CN202131145U (en) | 2012-02-01 |
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| CN201120192841U Expired - Fee Related CN202131145U (en) | 2011-06-09 | 2011-06-09 | Supercritical water oxidation reactor capable of supplementing heat by using auxiliary fuel |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102641885A (en) * | 2012-04-13 | 2012-08-22 | 郭志明 | Community domestic refuse and community domestic sewage integrated treatment (classification) technology |
| CN103512034A (en) * | 2013-09-30 | 2014-01-15 | 西安交通大学 | Organic wastewater supercritical hydrothermal combustion reactor |
| CN105387471A (en) * | 2014-08-27 | 2016-03-09 | 大洋环境株式会社 | flameless thermal combustion equipment |
| CN105457560A (en) * | 2015-12-24 | 2016-04-06 | 王冰 | Burner assembly of supercritical water oxidation reactor |
| CN105771811A (en) * | 2016-03-22 | 2016-07-20 | 江西金凯化工有限公司 | Energy-saving and efficient tubular reactor |
| CN111056616A (en) * | 2019-12-26 | 2020-04-24 | 一重集团大连工程技术有限公司 | Supercritical water oxidation system with air as oxidant and starting method |
| CN111375619A (en) * | 2018-12-29 | 2020-07-07 | 中科福能技术有限公司 | Supercritical water oxidation reaction method and device |
| CN114754358A (en) * | 2022-04-29 | 2022-07-15 | 西安交通大学 | Supercritical hydrothermal combustion treatment device for organic wastes |
-
2011
- 2011-06-09 CN CN201120192841U patent/CN202131145U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102641885A (en) * | 2012-04-13 | 2012-08-22 | 郭志明 | Community domestic refuse and community domestic sewage integrated treatment (classification) technology |
| CN103512034A (en) * | 2013-09-30 | 2014-01-15 | 西安交通大学 | Organic wastewater supercritical hydrothermal combustion reactor |
| CN103512034B (en) * | 2013-09-30 | 2016-01-20 | 西安交通大学 | The overcritical hydro-thermal combustion reactor of organic wastewater |
| CN105387471A (en) * | 2014-08-27 | 2016-03-09 | 大洋环境株式会社 | flameless thermal combustion equipment |
| CN105387471B (en) * | 2014-08-27 | 2018-11-06 | 大洋环境株式会社 | Without flame regenerative burner device |
| CN105457560B (en) * | 2015-12-24 | 2018-06-01 | 王冰 | A kind of burner assembly of overcritical water oxidization reactor |
| CN105457560A (en) * | 2015-12-24 | 2016-04-06 | 王冰 | Burner assembly of supercritical water oxidation reactor |
| CN105771811A (en) * | 2016-03-22 | 2016-07-20 | 江西金凯化工有限公司 | Energy-saving and efficient tubular reactor |
| CN105771811B (en) * | 2016-03-22 | 2018-12-25 | 江西金凯化工有限公司 | Energy-saving efficient tubular reactor |
| CN111375619A (en) * | 2018-12-29 | 2020-07-07 | 中科福能技术有限公司 | Supercritical water oxidation reaction method and device |
| CN111056616A (en) * | 2019-12-26 | 2020-04-24 | 一重集团大连工程技术有限公司 | Supercritical water oxidation system with air as oxidant and starting method |
| CN111056616B (en) * | 2019-12-26 | 2022-07-22 | 一重集团大连工程技术有限公司 | Supercritical water oxidation system with air as oxidant and starting method |
| CN114754358A (en) * | 2022-04-29 | 2022-07-15 | 西安交通大学 | Supercritical hydrothermal combustion treatment device for organic wastes |
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| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120201 Termination date: 20120609 |