CN208617454U - A kind of supercritical water oxidation device - Google Patents
A kind of supercritical water oxidation device Download PDFInfo
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- CN208617454U CN208617454U CN201821230423.2U CN201821230423U CN208617454U CN 208617454 U CN208617454 U CN 208617454U CN 201821230423 U CN201821230423 U CN 201821230423U CN 208617454 U CN208617454 U CN 208617454U
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- water oxidation
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Abstract
The utility model discloses a kind of supercritical water oxidation device, O in the device2Delivery branch pipe is sequentially connected two sections of adjacent two-stage reactors by T-type threeway and is responsible for, and realizes the segmentation supply of oxygen and being sufficiently mixed for oxygen and material, improves the utilization rate of oxygen and the reaction efficiency of material；Each reactor supervisor is externally provided with shell, by being passed through the cooling medium with reactant reverse flow into the cavity between shell and reactor supervisor's outer wall, realizes the recycling of the heat of reactor internal cause exothermic reaction generation, reduces energy waste；Overall structure is simple, is easy to overhaul and safeguard.
Description
Technical field
The utility model belongs to chemical industry equipment and waste process field, and in particular to a kind of supercritical water oxidation dress
It sets.
Background technique
Complicated for organic components in industrial organic wastes, harmfulness is big, and conventional processing technique is at high cost, and processing is not
This thorough status, supercritical Water Oxidation Technology is received significant attention in industrial organic waste process field in recent years, and is existed
The country realizes industrial applications, and the new environmentally friendly Co., Ltd difficult to understand in Nanjing built up in 2017 and 2 sets of processing capacity difference of having gone into operation
For 10,000 tons/year of supercritical oxidation device, the industrial organic hazardous waste generated for handling Nanjing chemical industrial park.
Supercritical Water Oxidation Technology (Supercritical Water Oxidation, SCWO) is using water overcritical
Under state (temperature >=374 DEG C, pressure >=22.1MPa), the high diffusibility for having both gas and liquid, the high dissolving power to organic matter
And the characteristic of low surface tension, oxygenolysis is carried out to debirs in several seconds to a few minutes clock time, converts it into H2O、
CO2, the small-molecule substances such as CO, reach a kind of high-level oxidation technology of efficient, the thorough harmless treatment of debirs.The technology
Advantage is: 1) degradation efficiency is high, complete decomposition；2) object without secondary pollution generates；3) content of organics >=3wt.% in material
In the case where, the self-heating of system can be realized, be not necessarily to external heating, save the energy.Its major defect is that oxygen consumption is big, if
Standby seriously corroded, and there are the risks of local overheating in reactor.
The core apparatus of supercritical water oxidation system is reactor, and structure type is mainly autoclave and two kinds of tubular type,
Limitation and material mixing of the middle tank reactor due to factors such as scantling and reaction times are uneven, part is rotten
The problems such as serious is lost, using less in engineering application；And tubular reactor is due in strong exothermal reaction and reaction under high pressure,
There is the advantage that tank reactor does not have and is applied in supercritical water oxidation system more.
But there is also two problems in practical applications for supercritical water tubular reactor:
The problem of first is that material and oxygen mix are insufficient, oxygen utilization low efficiency.Traditional material and oxygen mix
There are mainly two types of methods: one is materials to be mixed by an entry mixers before entering tubular reactor first with oxygen
After enter back into reactor；Another kind is to connect oxygen conveying pipe and material delivery pipe respectively at reactor inlet, allows oxygen and object
Material enters after reactor through diffusion and turbulent flow mixing.All there is entrance oxygen concentration height, oxygen in both hybrid modes
Change reaction acutely, and subsequent oxygen supply is insufficient, cause organic matter degradation be not thorough and local corrosion of material seriously and overtemperature risk
The disadvantages of.For this disadvantage, the patent of Patent No. CN105600912A discloses a kind of for supercritical water oxidation
Tubular reactor multiple spot infuses oxygen, segmentation mix device, and the device on several reactions supervisor of tubular reactor by being arranged
One oxygen injecting port, setting can extend into the core pipe of reactor supervisor at each oxygen injecting port, and open up in core pipe
Several groups are used for the aperture of oxygen diffusion, while helical element being arranged in core pipe, realize oxygen be uniformly injected into and oxygen
With being sufficiently mixed for material.But the device directly opens up oxygen injecting port on reactor supervisor, and there are high pressure sealing problems, and
Under high temperature and pressure and corrosive environment, the helical element being arranged in core pipe is easy to fall off because of corrosion, leads to reactor plugs, and
And the structure of reactor is complicated, is not easy to repair, reduces the safety and reliability of system.
Second be supercritical water oxidation is exothermic reaction, therefore organic components slightly fluctuate and will cause in material
The larger fluctuation of temperature causes reactor temperature to be difficult to control, there are the danger of reactor overtemperature, and tubular reactor ratio
Surface area is big, and heat dissipation capacity is big, if this part dispersed heat is not recycled, will lead to energy waste.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of supercritical water oxidation device, it is existing to solve
Defect existing for equipment.
In order to achieve the above objectives, the utility model provides the following technical solutions: a kind of supercritical water oxidation device, packet
Include tubular reactor and O2Transportation system, tubular reactor have several grades, and tubular reactors at different levels are disposed in parallel by two sections
Reactor supervisor and setting are responsible for the same end and are corresponded in two reactor to be responsible for by pressure container flange and two reactors
Connected return bend composition further includes that setting is responsible for the other end in reactor and is connected into adjacent two-stage reactor supervisor whole
The T-type threeway of body；O2Transportation system includes O2Conveying supervisor and several O on it in parallel2Delivery branch pipe, each T-type threeway
Vertical portals end connect one to one with each oxygen delivery branch pipe；First section reactor supervisor in chopped-off head tubular reactor
It is equipped with reaction-ure inlet, the latter end reactor supervisor in final stage tubular reactor is equipped with reactant exit.
It further, further include corresponding to be sleeved on each section of reactor supervisor's outer wall and formed between reactor supervisor's outer wall
The shell of cavity, shell both ends are arranged with the shell diversion pipe being connected to adjacent tubes shell phase；In final stage tubular reactor
Minor details shell is equipped with cooling medium inlet, and the first section shell in chopped-off head tubular reactor is exported equipped with cooling medium.
Further, each reactor supervisor is coaxially disposed with the shell of suit on it.
Further, each O2Delivery branch pipe is equipped with O2Flow control valve.
Further, the return bend in tubular reactors at different levels is equipped with pressure-detecting device and temperature-detecting device.
Further, each shell diversion pipe is equipped with pipe flange.
Further, the pipe end of each shell is responsible for corresponding reactor by welding and is tightly connected.
The utility model has the beneficial effects that:
(1) O in the device2Delivery branch pipe is sequentially connected two sections of adjacent two-stage reactors by T-type threeway and is responsible for, and realizes
Being sufficiently mixed for the segmentation supply of oxygen and oxygen and material, improves the utilization rate of oxygen and the reaction efficiency of material, subtracts
The local corrosion for having lacked reactor extends reactor service life.
(2) each reactor supervisor is externally provided with shell, by be passed through in the cavity be responsible between outer wall to shell and reactor with
The cooling medium of reactant reverse flow realizes the recycling of the heat of reactor internal cause exothermic reaction generation, reduces
Energy waste.
(3) device can make the temperature in reactor be maintained at certain by the flow of cooling medium in adjusting shell
Range avoids fluctuating widely for reactor temperature, while reducing the risk of reactor overtemperature, ensure that system is run
Stability.
(4) the flexible switching in reactor start-up stage and stable operation stage may be implemented in the device: in reactor
Starting stage can be passed through high-temperature hot fluid in shell, to heat to the reactant in reactor, to keep system quick
Starting；And in reactor stable operation, then it can be passed through cooling water, the waste heat that recycling system generates ensures simultaneously
The stability of reactor temperature.
(5) apparatus structure is simple, is easy to overhaul and safeguard.
Detailed description of the invention
In order to keep the purpose of this utility model, technical scheme and beneficial effects clearer, the utility model provides as follows
Attached drawing is illustrated:
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
Below in conjunction with attached drawing, the preferred embodiment of the utility model is described in detail.
As shown, the supercritical water oxidation device in the present embodiment, including tubular reactor and O2Transportation system,
Tubular reactor has three-level, and tubular reactors at different levels are anti-at two sections by two sections of reactor supervisors 1 disposed in parallel and setting
It answers device to be responsible for 1 the same end and the corresponding composition of return bend 3 being connected by pressure container flange 2 with two reactors supervisor, further includes
Reactor is set and is responsible for 1 other end and the T-type threeway 4 that the supervisor's series connection of adjacent two-stage reactor is integral；O2Transportation system
Including O2Conveying supervisor 5 and several O on it in parallel2Delivery branch pipe 6, the vertical portals end of each T-type threeway 4 and each O2
Delivery branch pipe 6 connects one to one；First section reactor supervisor 1 in chopped-off head tubular reactor is equipped with reaction-ure inlet
E2, the latter end reactor supervisor in final stage tubular reactor are equipped with reactant exit N2.
The T-type threeway 4 of above-mentioned setting is preferred embodiment, can also be cancelled, and selects and adjacent two-stage reactor is directly responsible for 1 end
Head and O2Delivery branch pipe is welded into threeway form of tubes, as long as guaranteeing the airtightness of junction.O herein2Delivery branch pipe passes through T
Type threeway is sequentially connected two sections of adjacent two-stage reactors supervisors 1, realizes the segmentation supply of oxygen and filling for oxygen and material
Divide mixing, improves the utilization rate of oxygen and the reaction efficiency of material, reduce the local corrosion of reactor, extend reactor
Service life.
As a further improvement of the foregoing solution, further include it is corresponding be sleeved on each section of reactor be responsible on 1 outer wall and with it is anti-
Device is answered to be responsible between 1 outer wall the shell 8 for forming cavity 7,8 both ends of shell are arranged with the shell diversion pipe being connected to adjacent tubes shell phase
9；Minor details shell in final stage tubular reactor is equipped with cooling medium inlet E1, the head in chopped-off head tubular reactor
It saves shell and is equipped with cooling medium outlet N1.The pipe end of each shell is responsible for sealing with corresponding reactor by welding and is connected herein
It connects.
After cooling medium pressurization from the cooling medium inlet E1 on minor details shell enter shell and reactor be responsible for 1 outer wall it
Between cavity 7 in, after reactant counterflow heat exchange, from cooling medium outlet N1 outflow, afterwards enter reactant preheating system in
Reactant is preheated, to realize the recycling of heat.
Each shell diversion pipe 9 herein is equipped with pipe flange 13, convenient for the connection of adjacent shell diversion pipe 9.
Preferably, each reactor supervisor 1 is coaxially disposed with the shell 8 of suit on it.To guarantee heat exchange uniformity and cold
But the flow stability of medium.
Each O in the present embodiment2Delivery branch pipe 6 is equipped with O2Flow control valve 10.O on branch pipe2Flow control valve 10 can
To control the on-off of the branch road oxygen, and can be according to reactant property and the extent of reaction, flexible modulation oxygen flow.
The return bend 3 in tubular reactors at different levels in the present embodiment is equipped with pressure-detecting device 11 and temperature detection
Device 12.
The supercritical water oxidation device can be passed through high-temperature hot fluid in shell in the starting stage of reactor, with
Reactant in reactor is heated, to make system quick start；And in reactor stable operation, then it can be passed through cold
But water, the waste heat that recycling system generates, while ensuring the stability of reactor temperature.
Finally, it is stated that preferred embodiment above is merely intended for describing the technical solutions of the present application, but not for limiting the present application, to the greatest extent
Pipe has been described in detail the utility model by above preferred embodiment, but those skilled in the art should manage
Solution, can make various changes, without departing from the utility model claims book institute to it in the form and details
The range of restriction.
Claims (7)
1. a kind of supercritical water oxidation device, including tubular reactor and O2Transportation system, tubular reactor have several grades,
Tubular reactors at different levels, which are responsible for by two sections of reactors disposed in parallel and are arranged, is responsible for the same end and right in two reactor
It should be made up of the return bend that pressure container flange is connected with two reactors supervisor, it is characterised in that: further include that setting is being reacted
Device is responsible for the other end and the T-type threeway that the supervisor's series connection of adjacent two-stage reactor is integral；O2Transportation system includes O2Conveying supervisor
And several O on it in parallel2Delivery branch pipe, the vertical portals end of each T-type threeway and each oxygen delivery branch pipe one are a pair of
It should connect；First section reactor supervisor in chopped-off head tubular reactor is equipped with reaction-ure inlet, is located at final stage pipe reaction
Latter end reactor supervisor in device is equipped with reactant exit.
2. supercritical water oxidation device according to claim 1, it is characterised in that: further include that correspondence is sleeved on each section
The shell of cavity is responsible on outer wall and is formed between reactor supervisor's outer wall to reactor, and shell both ends are arranged with and adjacent shell
The shell diversion pipe being connected；Minor details shell in final stage tubular reactor is equipped with cooling medium inlet, is located at chopped-off head
First section shell in tubular reactor is exported equipped with cooling medium.
3. supercritical water oxidation device according to claim 2, it is characterised in that: each reactor is responsible for and is sleeved on
Shell coaxial arrangement thereon.
4. supercritical water oxidation device according to claim 1, it is characterised in that: each O2Delivery branch pipe is equipped with O2
Flow control valve.
5. supercritical water oxidation device according to claim 1, it is characterised in that: the U in tubular reactors at different levels
Shape elbow is equipped with pressure-detecting device and temperature-detecting device.
6. supercritical water oxidation device according to claim 2, it is characterised in that: each shell diversion pipe is equipped with pipe
Flange.
7. supercritical water oxidation device according to claim 2, it is characterised in that: the pipe end of each shell passes through welding
It is responsible for and is tightly connected with corresponding reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821230423.2U CN208617454U (en) | 2018-08-01 | 2018-08-01 | A kind of supercritical water oxidation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821230423.2U CN208617454U (en) | 2018-08-01 | 2018-08-01 | A kind of supercritical water oxidation device |
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| Publication Number | Publication Date |
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| CN208617454U true CN208617454U (en) | 2019-03-19 |
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| CN201821230423.2U Active CN208617454U (en) | 2018-08-01 | 2018-08-01 | A kind of supercritical water oxidation device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110394143A (en) * | 2019-08-21 | 2019-11-01 | 兖州煤业股份有限公司 | A kind of coal resolution tubular type reaction unit |
-
2018
- 2018-08-01 CN CN201821230423.2U patent/CN208617454U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110394143A (en) * | 2019-08-21 | 2019-11-01 | 兖州煤业股份有限公司 | A kind of coal resolution tubular type reaction unit |
| CN110394143B (en) * | 2019-08-21 | 2024-06-07 | 兖矿能源集团股份有限公司 | Tubular reaction device is cleared up to coal |
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