CN107935287A - A kind of supercritical water oxidation energy-recuperation system - Google Patents
A kind of supercritical water oxidation energy-recuperation system Download PDFInfo
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- CN107935287A CN107935287A CN201711298934.8A CN201711298934A CN107935287A CN 107935287 A CN107935287 A CN 107935287A CN 201711298934 A CN201711298934 A CN 201711298934A CN 107935287 A CN107935287 A CN 107935287A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/06—Pressure conditions
- C02F2301/066—Overpressure, high pressure
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
Abstract
The invention discloses a kind of supercritical water oxidation energy-recuperation system,By connecting high-pressure hydraulic cyclone in the overcritical water oxidization reactor port of export,Inorganic salts in overcritical water oxidization reactor reaction product are excluded from sewage draining exit,And pressure high temperature hot gas will be produced and be discharged into progress concora crush processing in surge tank,Then the gas after concora crush is passed sequentially through into high pressure expansion turbine,Low pressure expansion turbine carries out UTILIZATION OF VESIDUAL HEAT IN power generation,Evaporator is connected in the outlet of low pressure expansion turbine,Rankine cycle system is connected on an evaporator,Using Rankine cycle system to further being utilized by the fluid waste heat on evaporator,Reduce the energy input of Rankine cycle system,Supercritical water oxidation system is combined by the present invention with waste heat hydraulic recovery system,Make full use of the thermal energy and pressure energy of supercritical water oxidation product,Improve supercritical water oxidation system energy regenerating utilization rate,The carbon dioxide in product is separated and recovered using gas-liquid separator and rectifying column,Reduce the discharge of greenhouse gases.
Description
Technical field
It is specifically, super the present invention is more particularly directed to one kind the present invention relates to supercritical water oxidation, waste heat hydraulic recovery field
Critical aoxidizes energy-recuperation system.
Background technology
Supercritical water oxidation (Supercritical Water Oxidation, SCWO) is in the critical point (P more than waterc
=22.1MPa, Tc=374.15 DEG C) high-temperature and high-pressure conditions under, the method that is aoxidized organic matter " burning " by oxidant.Should
Unique physico-chemical property that technology has using supercritical water (for example viscosity is small, diffusion coefficient is high, surface tension is small etc.), it is fast
Speed by oxidation operation into CO2、H2O、N2Etc. nontoxic product, due to the high efficiency of the technology, spatter property, it is subject to the country
The extensive concern of outer scholar.
Organic matter of the supercritical Water Oxidation Technology commonly used to processing high-concentration hardly-degradable, the COD in these organic matters is very
High (generally in 20000mg/L to 400000mg/L), traditional method can not handle it, and it is (single that COD contains substantial amounts of chemical energy
The calorific value of position COD is about 14.8kJ/g), it is a kind of " resource for having misplaced place ", is discharged when with oxidant reaction substantial amounts of
Thermal energy.Therefore, the product after supercritical water oxidation is in high-temperature high-pressure state, has very high thermal energy and pressure energy.
At present in supercritical water oxidation system, high-pressure fluid is directly generally down to by normal pressure, Ran Houjin by counterbalance valve
Promoting the circulation of qi liquid product separates, and the pressure energy that fluid has directly is lost, in extensive wastewater treatment process, the loss of this portion of energy
It is considerable.It is general to use its preheating material but anti-after preheating material for the thermal energy entrained by reaction product more
Answer product temperatur still higher, this method causes waste heat recovery rate low.
The content of the invention
It is an object of the invention to provide a kind of supercritical water oxidation energy-recuperation system, to overcome the prior art not
Foot.
To reach above-mentioned purpose, the present invention adopts the following technical scheme that：
A kind of supercritical water oxidation energy-recuperation system, including overcritical water oxidization reactor, supercritical water oxidation
The port of export of device is connected with high-pressure hydraulic cyclone, and the lower end of high-pressure hydraulic cyclone is equipped with sewage draining exit, high-pressure hydraulic cyclone
The gaseous phase outlet end of upper end is connected with surge tank, and the port of export of surge tank is connected with high pressure expansion turbine, high pressure turbine expansion
The steam drain end of machine is connected with low pressure expansion turbine, and low pressure expansion turbine exhaust port side is connected with evaporator, evaporator
Pipe side outlet end is connected with gas-liquid separator arrival end, and the gas outlet end of gas-liquid separator is connected with the first condenser, and first
The pipe side outlet end of condenser is connected with rectifying column, and the rectifier bottoms port of export is connected with liquid CO 2 storage tank, evaporator
It is connected with Rankine cycle system.
Further, the liquid inlet of overcritical water oxidization reactor is connected with jet pump, and the working fluid of jet pump enters
Mouthful end is connected with waste liquid high-pressure pump, and waste liquid high-pressure pump is used to extracting waste liquid, and waste liquid high-pressure pump is connected with waste tank, jet pump with
The first electric heater is equipped between waste liquid high-pressure pump；The driving fluid arrival end of jet pump is connected to oxidizer source, jet pump
Driving fluid arrival end is connected to oxidant storage tank by oxidant high-pressure pump.
Further, the second electric heater is connected between high pressure expansion turbine and low pressure expansion turbine.
Further, Rankine cycle system includes the turbo-expander being connected with evaporator by the 3rd electric heater, thoroughly
Flat expander outlet is connected with the second condenser, fluid reservoir and organic working medium pump in turn, and the outlet of organic working medium pump is connected to steaming
Send out device.
Further, gas-liquid separator gas outlet end exports oxygen by the first counterbalance valve and carbon dioxide enters first
In condenser.
Further, the liquid outlet end of gas-liquid separator is equipped with water tank.
Further, gas-liquid separator bottom liquid outlet end connects water tank by the second counterbalance valve.
Further, oxidant high-pressure pump is high-pressure plunger pump or compressor.
Further, the sewage draining exit bottom of high-pressure hydraulic cyclone is equipped with storage slag chute.
Further, overcritical water oxidization reactor is equipped with the auxiliary for being used for being heated in overcritical water oxidization reactor and adds
Thermal.
Compared with prior art, the present invention has technique effect beneficial below：
A kind of supercritical water oxidation energy-recuperation system of the present invention, by being connected in the overcritical water oxidization reactor port of export
High-pressure hydraulic cyclone, the inorganic salts in overcritical water oxidization reactor reaction product are excluded from sewage draining exit, and will production
Raw pressure high temperature hot gas is discharged into progress concora crush processing in surge tank, and it is swollen that the gas after concora crush then is passed sequentially through high pressure turbine
Swollen machine, low pressure expansion turbine carry out UTILIZATION OF VESIDUAL HEAT IN power generation, evaporator are connected in the outlet of low pressure expansion turbine, in evaporator
Upper connection Rankine cycle system, using Rankine cycle system to further being utilized by the fluid waste heat on evaporator, reduces
Supercritical water oxidation system is combined by the energy input of Rankine cycle system, the present invention with waste heat hydraulic recovery system, fully
Using the thermal energy and pressure energy of supercritical water oxidation product, supercritical water oxidation system energy regenerating utilization rate, Ran Hou are improved
Evaporator back end accesses gas-liquid separator and rectifying column, is combined using low temperature phase change partition method and rectification method by oxidation product
Carbon dioxide separated and recovered, reduce the discharge of greenhouse gases.
Further, the liquid inlet of overcritical water oxidization reactor is connected with jet pump, and the working fluid of jet pump enters
Mouthful end is connected with waste liquid high-pressure pump, and waste liquid high-pressure pump is used to extracting waste liquid, and waste liquid high-pressure pump is connected with waste tank, jet pump with
The first electric heater is equipped between waste liquid high-pressure pump；The driving fluid arrival end of jet pump is connected to oxidizer source, jet pump
Driving fluid arrival end is connected to oxidant storage tank by oxidant high-pressure pump, is mixed waste liquid and oxidant using jet pump
The operating pressure for uniformly, reducing oxidant high-pressure pump is closed, improves the work efficiency of overcritical water oxidization reactor.
Further, the second electric heater is connected between high pressure expansion turbine and low pressure expansion turbine, utilizes
Two electric heaters improve exhaust mass dryness fraction, avoid separating out water droplet generation liquid hit phenomenon.
Further, Rankine cycle system includes the turbo-expander being connected with evaporator by the 3rd electric heater, thoroughly
Flat expander outlet is connected with the second condenser, fluid reservoir and organic working medium pump in turn, and the outlet of organic working medium pump is connected to steaming
Device is sent out, is connected by Rankine cycle system with evaporator, using gas-liquid waste heat in evaporator, organic working medium is heated, is subtracted
The heating-up temperature of heater, improves utilization rate of waste heat in small Rankine cycle system.
Brief description of the drawings
Fig. 1 is schematic structural view of the invention.
Wherein, 1 is waste tank, and 2 be waste liquid high-pressure pump, and 3 be the first electric heater, and 4 be jet pump, and 5 store up for oxidant
Tank, 6 be oxidant high-pressure pump, and 7 be overcritical water oxidization reactor, and 8 be ancillary heating equipment, and 9 be high-pressure hydraulic cyclone, 10
To store up slag chute, 11 be surge tank, and 12 be high pressure expansion turbine, and 13 be the second electric heater, and 14 be low pressure expansion turbine, 15
It is gas-liquid separator for evaporator, 16,17 be the first counterbalance valve, and 18 be the first condenser, and 19 be rectifying column, and 20 be liquid dioxy
Change carbon storage tank, 21 be the second counterbalance valve, and 22 be water tank, and 23 be organic working medium pump, and 24 be fluid reservoir, 25 the second condensers,
26 be turbo-expander, and 27 be the 3rd electric heater.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings：
As shown in Figure 1, a kind of supercritical water oxidation energy-recuperation system, including overcritical water oxidization reactor 7, it is overcritical
Water oxidation reactor 7 is equipped with assisted heating device 8, anti-for heating, supercritical water oxidation in overcritical water oxidization reactor 7
The liquid inlet of device 7 is answered to be connected with jet pump 4, the Working-fluid intaking end of jet pump 4 is connected with waste liquid high-pressure pump 2, and waste liquid is high
Press pump 2 is used to extract waste liquid, and waste liquid high-pressure pump 2 is connected with waste tank 1, and first is equipped between jet pump 4 and waste liquid high-pressure pump 2
Electric heater 3；The driving fluid arrival end of jet pump 4 is connected to oxidizer source, and the driving fluid arrival end of jet pump 4 passes through oxygen
Agent high-pressure pump 6 is connected to oxidant storage tank 5；The port of export of overcritical water oxidization reactor 7 is connected with high-pressure hydraulic cyclone
9, the lower end of high-pressure hydraulic cyclone 9 is equipped with sewage draining exit, and the sewage draining exit bottom of high-pressure hydraulic cyclone 9 is equipped with storage slag chute 10, high
9 upper end of pressure hydrocyclone is equipped with gaseous phase outlet, and the gaseous phase outlet end of high-pressure hydraulic cyclone 9 is connected with surge tank 11, buffering
The port of export of tank 11 is connected with high pressure expansion turbine 12, and it is swollen that the steam drain end of high pressure expansion turbine 12 is connected with low pressure turbine
Swollen machine 14, is connected with the second electric heater 13, low pressure turbine is swollen between high pressure expansion turbine 12 and low pressure expansion turbine 14
Swollen 14 exhaust port side of machine is connected with evaporator 15, and 14 exhaust port side of low pressure expansion turbine and the pipe side entrance end of evaporator 15 connect
Connect, the pipe side outlet end of evaporator 15 is connected with 16 arrival end of gas-liquid separator, and the 16 top gas port of export of gas-liquid separator leads to
Cross the first counterbalance valve 17 output oxygen, carbon dioxide enters in the first condenser 18, the pipe side outlet end company of the first condenser 18
Rectifying column 19 is connect, 19 outlet at bottom end of rectifying column is connected with liquid CO 2 storage tank 20, and 16 bottom liquid of gas-liquid separator goes out
Mouth end passes through the second counterbalance valve 21 and connects water tank 22；Evaporator 15 is connected with Rankine cycle system, and Rankine cycle system includes
The turbo-expander 26 being connected with evaporator 15 by the 3rd electric heater 27, the outlet of turbo-expander 26 are connected with second in turn
Condenser 25, fluid reservoir 24 and organic working medium pump 23, the outlet of organic working medium pump 23 are connected to evaporator 15；
Wherein overcritical water oxidization reactor reaction temperature is 375 DEG C -650 DEG C, pressure 23-30MPa.
Oxidant stress pump is high-pressure plunger pump or compressor, is respectively used to liquid oxidizer and gaseous oxidizer；Oxidation
Agent can be O2, air and hydrogen peroxide；
It is working fluid to spray organic liquid waste in pump installation, and oxidant is driven fluid；
Ancillary heating equipment is electric heater or gas furnace；
Electric heater is installed on pipeline between connection high pressure expansion turbine and low pressure expansion turbine, to from high pressure
The steam exhaust that turbine comes out is reheated.
Working medium in Rankine cycle system is low boiling point organic working medium, and Rankine cycle system is organic rankine cycle system.
Electric heater is installed in Rankine cycle system between evaporator and turbo-expander.
High pressure waste water pump, oxidant stress pump, organic working medium pump are equipped with frequency conversion facility, and radio frequency control apparatus are housed.
Control valve is equipped between each connecting pipe, control valve is electromagnetic type, and radio frequency control apparatus is housed.
In carbon dioxide separation decompression, condensation process, CO is controlled by the first counterbalance valve2、O2Mixture pressure determines
CO2Phase transition temperature, it is ensured that CO2Phase transition temperature is close to room temperature.
Cold fluid needed for first condenser, cooling water needed for the second condenser are provided by freezing unit, the first condenser
Required cold fluid can be liquid nitrogen, and the temperature of cold fluid, cooling water into condenser is below cooled fluid liquefaction temperature.
Working medium circulating pump pumps for impeller.
High pressure expansion turbine, low pressure expansion turbine, turbo-expander connect with corresponding generator coaxle respectively
Connect.
Turbo-expander acting power generation one in high pressure expansion turbine, low pressure expansion turbine and Rankine cycle system
Part may be incorporated into power grid, and another part is provided in total system of the present invention electric energy needed for power consumption device.
It is described further below in conjunction with the accompanying drawings to structural principle of the invention and using step：
As shown in Figure 1, the organic liquid waste in waste tank 1 is pumped into the first electric heater 3 after the boosting of waste liquid high-pressure pump 2,
And be heated in the first electric heater 3, inputted after being heated to required temperature in 4 Working-fluid intaking of jet pump, at the same time,
Oxidized dose of high-pressure pump 6 of oxidant in oxidant storage tank 5 is inputted in 4 driving fluid entrance of jet pump after boosting, oxidant and
Organic liquid waste mixes in the trunnion of jet pump 4 is sent into 7 top entry of overcritical water oxidization reactor after diffusion pipeline section boosting,
Start temperature in the raising overcritical water oxidization reactor of ancillary heating equipment 8 at the same time to setting value, organic liquid waste and oxidant to exist
Oxidation reaction occurs in overcritical water oxidization reactor 7, by organic liquid waste completely burned, and discharges big calorimetric, reaction product from
7 bottom of reactor is flowed out in high-pressure hydraulic cyclone 9, and the solid inorganic salt for reacting generation is removed through high-pressure hydraulic cyclone 9
Drain into storage slag chute 10 to be collected, the high-temperature, high pressure fluid that 9 top exit of high-pressure hydraulic cyclone comes out is introduced into surge tank 11
In, the power generation of 12 air inlet expansion work of high pressure expansion turbine is inputted after stable gas pressure, is vented from high pressure expansion turbine 12
Mixed gas temperature, the pressure of mouth out reduce, and gas temperature is further improved by the second electric heater 13, again will be mixed
Close gas input low pressure expansion turbine 14 in expansion work generate electricity, at this time, after turbine power generation twice fluid temperature (F.T.), pressure into
One step reduces, and flows into evaporator 15, heat is largely passed to having in Rankine cycle by low-pressure fluid by evaporator 15
Machine working medium, liquid organic working medium are changed into gaseous state, and being heated to be superheated vapor by the 3rd electric heater 27 enters in turbo-expander
Expansion work generates electricity, and finishes the organic working medium that work(ejects and is changed into liquid by the condensation of the second condenser 18, into fluid reservoir 24
By organic working medium pump 23 be sent into evaporators 15 in formed circulation, you can using fluid after turbine power generation waste heat endlessly
Export electric energy, by evaporator 15 heat exchange after cryogen enter gas-liquid separator 16 in, by gas-liquid separation liquid water from
16 bottom liquid outlet of gas-liquid separator is discharged into water tank 22, CO2With excessive O2Exported from 16 top gas of gas-liquid separator
End is entered in the first condenser 18 by the first counterbalance valve 17, is controlled mixture pressure by adjusting the first counterbalance valve 17, is made
CO2Condensing temperature close to room temperature, CO2The cold fluid cooling that gas passes through in the first condenser is changed into liquid and enters rectifying column 19
In, liquid CO2In contain some O2, by repeatedly gasification, condensation so that CO in rectifying column 192And O2Separated, from
And obtain the CO of high concentration2It is stored in liquid CO 2 storage tank 20, the O separated from the top of rectifying column 192Recycled
Recycle.Pending organic liquid waste is oxidized to CO after supercritical water oxidation2、H2O and inorganic salts, wherein without
Solubility of the machine salt in supercritical water is very low, it will separate out in the reactor and collect in reactor bottom, these solid-states without
Machine thing will be removed by high-pressure hydraulic cyclone from system.
Oxidation reaction in reactor is exothermic reaction, the high-temperature, high pressure fluid come out from high-pressure hydraulic cyclone apex
(H2O、CO2And excess O2) be connected to the grid into the power generation of supercritical steam turbine high pressure turbine expansion work, the fluid after acting
Temperature and pressure reduces, then heats steam by the second electric heater, raises vapor (steam) temperature, then passes to low pressure turbine expansion
Acting, to produce more electric power.Second electric heater improves exhaust mass dryness fraction, avoids separating out water droplet equivalent to boiler reheater
Produce liquid hit phenomenon.
Fluid temperature (F.T.) after low pressure turbine expansion work reduces, using organic Rankine cycle power generation system to low temperature stream
Thermal energy in body is recycled, and during work, the organic working medium in the organic Rankine cycle power generation system is inhaled by evaporator
Low temperature exhaust heat is received, is converted into the steam with certain temperature and pressure, steam enters turbine expansion acting power generation after reheating
It is connected to the grid.
The CO come out from the side outlet of evaporator tube2、H2O and excess O2Mixture enters in gas-liquid separator, CO2And O2
Mixture is discharged from separator top gas outlet, the CO in mixture2Become liquid, but liquid CO by being depressured, condensing2
In still can dissolve a small amount of O2, based on CO2And O2Boiling point there are larger difference, by CO2And O2Input rectifying column is purified, and is obtained
To the CO of high concentration2, from the O of rectifying tower top discharge2Recycled.
Claims (10)
1. a kind of supercritical water oxidation energy-recuperation system, it is characterised in that super to face including overcritical water oxidization reactor (7)
The port of export of boundary's water oxidation reactor (7) is connected with high-pressure hydraulic cyclone (9), and the lower end of high-pressure hydraulic cyclone (9) is equipped with
Sewage draining exit, the gaseous phase outlet end of high-pressure hydraulic cyclone (9) upper end are connected with surge tank (11), and the port of export of surge tank (11) connects
High pressure expansion turbine (12) is connected to, the steam drain end of high pressure expansion turbine (12) is connected with low pressure expansion turbine (14),
Low pressure expansion turbine (14) exhaust port side is connected with evaporator (15), the pipe side outlet end of evaporator (15) and gas-liquid separator
(16) arrival end connects, and the gas outlet end of gas-liquid separator (16) is connected with the first condenser (18), the first condenser (18)
Pipe side outlet end be connected with rectifying column (19), rectifying column (19) port of export is connected with liquid CO 2 storage tank (20), evaporation
Device (15) is connected with Rankine cycle system.
A kind of 2. supercritical water oxidation energy-recuperation system according to claim 1, it is characterised in that supercritical water oxidation
The liquid inlet of reactor (7) is connected with jet pump (4), and the Working-fluid intaking end of jet pump (4) is connected with waste liquid high-pressure pump
(2), waste liquid high-pressure pump (2) is used to extract waste liquid, and waste liquid high-pressure pump (2) is connected with waste tank (1), jet pump (4) and waste liquid
The first electric heater (3) is equipped between high-pressure pump (2)；The driving fluid arrival end of jet pump (4) is connected to oxidizer source, injection
The driving fluid arrival end of pump (4) is connected to oxidant storage tank (5) by oxidant high-pressure pump (6).
3. a kind of supercritical water oxidation energy-recuperation system according to claim 1, it is characterised in that high pressure turbine expands
The second electric heater (13) is connected between machine (12) and low pressure expansion turbine (14).
A kind of 4. supercritical water oxidation energy-recuperation system according to claim 1, it is characterised in that Rankine cycle system
Including the turbo-expander (26) being connected with evaporator (15) by the 3rd electric heater (27), turbo-expander (26) outlet according to
Secondary to be connected with the second condenser (25), fluid reservoir (24) and organic working medium pump (23), the outlet of organic working medium pump (23) is connected to
Evaporator (15).
A kind of 5. supercritical water oxidation energy-recuperation system according to claim 1, it is characterised in that gas-liquid separator
(16) gas outlet end exports oxygen by the first counterbalance valve (17) and carbon dioxide enters in the first condenser (18).
A kind of 6. supercritical water oxidation energy-recuperation system according to claim 1, it is characterised in that gas-liquid separator
(16) liquid outlet end is equipped with water tank (22).
A kind of 7. supercritical water oxidation energy-recuperation system according to claim 6, it is characterised in that gas-liquid separator
(16) bottom liquid outlet end connects water tank (22) by the second counterbalance valve (21).
A kind of 8. supercritical water oxidation energy-recuperation system according to claim 1, it is characterised in that oxidant high-pressure pump
(6) it is high-pressure plunger pump or compressor.
A kind of 9. supercritical water oxidation energy-recuperation system according to claim 1, it is characterised in that high-pressure hydraulic eddy flow
The sewage draining exit bottom of device (9) is equipped with storage slag chute (10).
A kind of 10. supercritical water oxidation energy-recuperation system according to claim 1, it is characterised in that overcritical water oxygen
Change reactor (7) and be equipped with the assisted heating device (8) for being used for heating in overcritical water oxidization reactor (7).
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| CN201711298934.8A CN107935287A (en) | 2017-12-08 | 2017-12-08 | A kind of supercritical water oxidation energy-recuperation system |
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