CN206219347U - A kind of wet oxidation processing system of high concentrated organic wastewater - Google Patents
A kind of wet oxidation processing system of high concentrated organic wastewater Download PDFInfo
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- CN206219347U CN206219347U CN201621267837.3U CN201621267837U CN206219347U CN 206219347 U CN206219347 U CN 206219347U CN 201621267837 U CN201621267837 U CN 201621267837U CN 206219347 U CN206219347 U CN 206219347U
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- 239000002351 wastewater Substances 0.000 title claims abstract description 95
- 238000009279 wet oxidation reaction Methods 0.000 title claims abstract description 45
- 238000012545 processing Methods 0.000 title claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims abstract description 89
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 52
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 52
- 239000001301 oxygen Substances 0.000 claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 45
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 239000007789 gas Substances 0.000 claims abstract description 20
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 238000000926 separation method Methods 0.000 claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 10
- 239000003054 catalyst Substances 0.000 claims abstract description 9
- 238000005260 corrosion Methods 0.000 claims abstract description 6
- 239000002253 acid Substances 0.000 claims description 27
- 238000003860 storage Methods 0.000 claims description 23
- 238000012546 transfer Methods 0.000 claims description 23
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 16
- 239000003513 alkali Substances 0.000 claims description 14
- 230000033228 biological regulation Effects 0.000 claims description 14
- 230000008676 import Effects 0.000 claims description 14
- 150000001875 compounds Chemical class 0.000 claims description 12
- 238000005554 pickling Methods 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 235000021110 pickles Nutrition 0.000 claims description 6
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000002585 base Substances 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 238000011282 treatment Methods 0.000 abstract description 21
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract description 19
- 229910001882 dioxygen Inorganic materials 0.000 abstract description 18
- 238000004064 recycling Methods 0.000 abstract description 5
- 230000000903 blocking effect Effects 0.000 abstract description 3
- 239000002131 composite material Substances 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- 239000000356 contaminant Substances 0.000 abstract description 2
- 238000011065 in-situ storage Methods 0.000 abstract description 2
- 230000010354 integration Effects 0.000 abstract description 2
- 239000010815 organic waste Substances 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 44
- 238000000034 method Methods 0.000 description 16
- 239000000463 material Substances 0.000 description 12
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- 230000000694 effects Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M sodium hydroxide Inorganic materials [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 7
- 239000003814 drug Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
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- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 239000005947 Dimethoate Substances 0.000 description 2
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- MCWXGJITAZMZEV-UHFFFAOYSA-N dimethoate Chemical compound CNC(=O)CSP(=S)(OC)OC MCWXGJITAZMZEV-UHFFFAOYSA-N 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
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- 150000002903 organophosphorus compounds Chemical class 0.000 description 2
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- 238000003911 water pollution Methods 0.000 description 2
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- 238000000605 extraction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- XDDAORKBJWWYJS-UHFFFAOYSA-N glyphosate Chemical compound OC(=O)CNCP(O)(O)=O XDDAORKBJWWYJS-UHFFFAOYSA-N 0.000 description 1
- 229940097068 glyphosate Drugs 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000003002 pH adjusting agent Substances 0.000 description 1
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- 238000004781 supercooling Methods 0.000 description 1
Abstract
It is integrated by devices such as oxygen processed, pretreatment, heat-conducting oil heating, wet oxidation treatment, cooling step-down, gas-liquid separation and vent gas treatments the utility model discloses a kind of wet oxidation processing system of high concentrated organic wastewater.Compared with prior art, the utility model system is readily transported and installs, and integration is good；The system carries out fully recycling come pre- thermal wastewater and oxygen by multi-stage heat exchanger to reacted heat, it is possible to decrease operating cost；With air it is raw material formed in-situ high purity oxygen gas by oxygenerator, for wet oxidation reaction, contaminant removal efficiency can be improved；Using the wet oxidation reaction device of bimetallic composite, reaction unit inside sets catalyst tank, is conducive to improving the corrosion resistance of reaction unit and reducing reaction condition；System can carry out the reaction unit deslagging in running, advantageously reduce scaling and the risk for blocking, and can be widely applied to the treatment of high concentration hard-degraded organic waste water.
Description
Technical field
The utility model belongs to water-treatment technology field, at more particularly to a kind of wet oxidation of high concentrated organic wastewater
Reason system.
Background technology
In recent decades, with industrialized fast development, the environmental pollution of generation is also increasingly serious, and water pollution is particularly dashed forward
Go out.In China, water pollution is mainly derived from the sewage tool of the industry such as intractable trade effluent, particularly oil, chemical industry, agricultural chemicals
The features such as having high concentration, complicated component, poisonous and harmful, biodegradable ability so that traditional biodegradable technique is subject to
Serious challenge.Additionally, the extensive application of membrane technology in recent years, causes high-concentration industrial sewage further to concentrate, generation it is dense
Contracting liquid has bigger menace to the mankind and environment.
Wet oxidation process is a kind of Advanced Oxidation Technics in Dealing that the fifties in last century proposes, because the technique is high in treatment
Fabulous characteristic is shown during concentration, poisonous and harmful organic wastewater, the concern of scientists from all over the world is received.Wet oxidation work
Skill be under conditions of HTHP by the larger molecular organicses oxidation Decomposition in waste water be small organic molecule, CO2With water etc.
The processing procedure of small molecule inorganic matter.High concentrated organic wastewater through after the PROCESS FOR TREATMENT reflect water energy enough reach it is general
Biological treatment requirement.
At present, Wet Oxidation Process is applied in actual industrial and there is a series of problems：(1) technique is often empty with oxidant
Gas, the oxygen content about 20% in air, remaining is the nitrogen for being not involved in reaction, it is therefore desirable to convey the air of big flow to reacting
Device, results in the need for bigger compressor, and equipment investment cost is high, and simultaneous oxidation effect is not so good as pure oxygen, to vent gas treatment cost
Cause negative effect；(2) wet-type oxidation technology is typically difficult to the direct qualified discharge of organic wastewater, to ammonia nitrogen and small point
The treatment effect of the hard-degraded substances such as sub- organic acid is poor；Current main direction of studying one is prepared with high activity, Gao Wen
Qualitatively catalyst, improves transformation efficiency, and two is the combination of the methods such as water outlet and MVR, biochemistry, wet oxidation water outlet is carried out secondary
Treatment；(3) tail gas problem, wet oxidation system discharge exhaust gas component with treatment medium and process conditions change without
Together, main component is N2And CO2, typically there is pungent odour and VOC, it is necessary to processed.
Utility model content
The purpose of this utility model is the wet oxidation processing system for providing a kind of high concentrated organic wastewater, collection oxygen processed,
The functions such as Wastewater Pretreatment, heat-conducting oil heating, wet oxidation treatment, cooling step-down, tail gas adsorption are in one.
In order to achieve the above object, the utility model is achieved using following technical scheme：
A kind of wet oxidation processing system of high concentrated organic wastewater, including the pretreatment being sequentially connected by pipeline is filled
Put, hot oil heater and reaction unit；
First Heat Exchanger is provided between the pretreatment unit and hot oil heater, by the inner tube of First Heat Exchanger
Connection；
The entrance of the reaction unit is provided with the bypass for being passed through oxygen, is directly connected to oxygenerator；The oxygen of being passed through
Bypass is provided with the second heat exchanger, causes that oxygenerator is connected with the entrance of reaction unit by the inner tube of the second heat exchanger；
The outlet of the reaction unit is sequentially connected the second heat exchanger outer tube, First Heat Exchanger outer tube, cooling by pipeline
Device, dropping equipment, gas-liquid separation device and exhaust gas processing device.
Preferably, bypass duct is provided between the import and export of the hot oil heater, and is provided with for temporarily termination
The temperature sensor and automatic valve of hot oil heater work.
Preferably, the shunt valve for reaction unit deslagging is provided between the reaction unit entrance and cooling device entrance
Road and automatic valve, the reaction unit temporarily avoid oxygen and waste water when being provided with for reaction unit deslagging between importing and exporting
It is passed through the bypass duct and automatic valve of reaction unit.
Preferably, the pretreatment unit includes that waste water adjusts tank, and the waste water regulation tank has two entrances, and one passes through
Pipeline is sequentially connected waste water pump and wastewater storage tank, and another is sequentially connected by pipeline and automatically adjusts acid and alkali pumps and soda acid storage tank；
The outlet of waste water regulation tank is sequentially connected piping filter and high-pressure plunger pump, the outlet of described high-pressure plunger pump and
First Heat Exchanger inner tube is connected.
It is further preferred that being provided with agitator and online pH meter on the waste water regulation tank；Before the high-pressure plunger pump
Pipeline on set flowmeter and piping filter.
Preferably, the hot oil heater includes Heat-transfer Oil Pump, hotline heater, the 3rd heat exchanger and conduction oil
Head tank, wherein, the outlet of Heat-transfer Oil Pump is connected with the entrance of hotline heater, and the outlet of hotline heater is changed with the 3rd
The entrance connection of hot device outer tube, the outlet of the 3rd heat exchanger outer tube returns to the entrance of Heat-transfer Oil Pump, and the import and export of Heat-transfer Oil Pump are simultaneously
Connection conduction oil head tank.
Preferably, it is provided with catalyst tank in the reaction unit；The reaction unit wall is made up of inside and outside two-layer, outer layer
It is bearing course, is made up of carbon steel or stainless steel, internal layer is anti-corrosion layer, is made up of nickel-base alloy.The catalyst tank can be filled
Catalyst granules is filled out, reaction condition can be effectively reduced, be improved the clearance of pollutant.Using the reaction of bimetallic composite
Device, is conducive to improving the corrosion resistance of reaction unit and reducing reaction condition.
Preferably, the oxygenerator includes the air compressor, the first omnibus control system that are sequentially connected by pipeline
Tank, the second omnibus control system tank and oxygen supercharger, wherein, the first omnibus control system tank and the second pressure-variable adsorption system
The entrance of oxygen tank is respectively equipped with the bypass of nitrogen discharge, and the entrance of the oxygen supercharger is provided with oxygen emptying bypass, passes through
Valve and oxygen flow meter are realized automatically adjusting.Wherein, the omnibus control system tank is the using and the reserved, and an oxygen tank processed is in system
During standby high purity oxygen gas, another is standby in discharge nitrogen.
Preferably, the cooling device includes the clear water storage tank, clarified water pump and the cooler that are sequentially communicated by pipeline, described
Bypass duct is provided between the outlet of clarified water pump and the outlet of waste water regulation tank, the bypass duct is connected with acid dip pickle, institute
Stating acid dip pickle includes dispensing canister and compound pump, and system acid-washing is carried out valve transfer is shut down by.
Preferably, the dropping equipment is automatic counterbalance valve, and the gas-liquid separation device is gas-liquid separator, the tail gas
Processing unit is active carbon adsorber.The active carbon adsorber, can effectively remove the organic pollution in tail gas, realize nothing
Disposal of pollutants.
The method for carrying out wet oxidation treatment to high concentrated organic wastewater using said system：During system operation, air enters
High purity oxygen gas are obtained after entering oxygenerator, by entering reaction unit after the second inner tube of heat exchanger, meanwhile, organic wastewater is by pre-
Processing unit, via First Heat Exchanger inner tube after, then by start hot oil heater heat after enter reaction unit, instead
Answer in device, high purity oxygen gas and organic wastewater carry out wet oxidation reaction, the high temperature gas-liquid mixture after reaction is by reaction
The outlet of device sequentially enters the outer tube of the second heat exchanger, the outer tube of First Heat Exchanger, respectively with high purity oxygen gas and organic wastewater
Exchanged heat, then lowered the temperature through cooling device again, then normal pressure is down to through dropping equipment, gas-liquid separation device, gas are entered after step-down
Body enters after exhaust gas processing device is processed through the top of gas-liquid separation device discharges, and liquid is from gas-liquid separation device lower end delivery port
Outer row focuses on.
When the wet oxidation processing system of above-mentioned high concentrated organic wastewater is run, by First Heat Exchanger and the second heat exchanger
Reacted heat is recycled, is used to preheat organic wastewater and high purity oxygen gas, it is possible to decrease system operation cost.
Preferably, in reaction unit, high purity oxygen gas and organic wastewater react 1 under the conditions of 250~300 DEG C, 5~12MPa
~2h.By wet oxidation reaction, the hardly degraded organic substance in organic wastewater is decomposed into micromolecular compound, organic phosphorus compound
In P elements be decomposed into Phos, the nitrogen in organonitrogen compound is decomposed into ammonia nitrogen, is improved while removal waste water COD
The biodegradability of waste water.
Preferably, bypass duct is provided between the import and export of the hot oil heater, and is provided with for temporarily termination
The temperature sensor and automatic valve of hot oil heater work, start and the not enough setting temperature of feeding preheating temperature in system
Just start hot oil heater when spending, otherwise directly connected by bypass duct.
It is further preferred that the design temperature is 200~250 DEG C.
During system operation, Heat-transfer Oil Pump and hotline heater are started first, entering the 3rd after conduction oil is heated exchanges heat
The outer tube inlet of device, then flow back to heat-conducting oil heating system recycling from the outer tube outlet of the 3rd heat exchanger；According to the 3rd heat exchange
The power of the temperature automatic adjustment hotline heater of device inner tube outlet, the temperature for exporting the 3rd inner tube of heat exchanger reaches setting
Temperature；Inner tube outlet temperature such as First Heat Exchanger has reached design temperature, then hotline heater is stopped, for protection is led
The safety of heating system of hot oil, Heat-transfer Oil Pump can be run always.
Preferably, the shunt valve for reaction unit deslagging is provided between the reaction unit entrance and cooling device entrance
Road and valve, the reaction unit are provided with the bypass for temporarily avoiding oxygen and waste water from being passed through reaction unit between importing and exporting
Pipeline and valve.When needing to carry out in the process of running reaction unit (6) deslagging, by valve transfer so that preheating after waste water
Do not enter reaction unit (6) with oxygen and be directly entered follow-up equipment, while pressing reaction unit (6) by dropping equipment (20)
Power 2~3MPa of reduction, reaction unit (6) interior residue and part waste material are to enter cooler (19) from the import of reaction unit (6),
Discharged after entering gas-liquid separation device (21) separating treatment after dropping equipment (20) step-down again.
System reaction unit deslagging in the process of running is thus achieved, scaling and the wind for blocking is advantageously reduced
Danger.
The oxygenerator realizes scene oxygen processed, and during system operation, air is forced into 0.4 through air compressor~
0.8MPa, into the first omnibus control system tank or the second omnibus control system tank, can be obtained pure by omnibus control system tank
The high purity oxygen gas of degree more than 90%, can realize automatically adjusting for oxygen flow by bypassing emptying；High purity oxygen gas are pressurized through oxygen
Machine pressurization can enter the inner tube and reacted stream of the second heat exchanger by the high purity oxygen gas for pressurizeing to 5~12MPa of reaction pressure
Body exchanges heat, and preheated rear temperature can reach 250~300 DEG C, be directly entered reaction unit.By oxygenerator high purity oxygen
Gas, for wet oxidation reaction, can improve contaminant removal efficiency.
During system operation, organic wastewater is had previously been stored in wastewater storage tank, according to the actual pH of organic wastewater, in soda acid tank
Appropriate acid solution (such as HNO is stored in advance3) or alkali lye (such as KOH)；Open waste water pump and acid and alkali pumps add waste water and acid ＆ alkali liquid
Enter waste water regulation tank, while start agitator and monitor the pH of mixed material, make material pH control setting value (pH for 6~
9).The material for regulating filters particulate matter through piping filter, into high-pressure plunger pump；Pressurization and stream by high-pressure plunger pump
Amount control, material enters the inner tube and reacted fluid heat transfer of First Heat Exchanger, such as the inner tube outlet temperature of First Heat Exchanger
200~250 DEG C of not enough predetermined value, then further heat automatically into hot oil heater, and the material for reaching preheating condition enters
Enter reaction unit；Inner tube outlet temperature such as First Heat Exchanger reaches 200~250 DEG C of predetermined value, then directly add via conduction oil
The bypass duct that thermal is imported and exported is directly entered reaction unit.By organic wastewater pretreatment unit, realize to waste water
The function of homogeneous, pH regulations and filtering.Also, use KOH to replace NaOH as alkaline pH adjusting agent, due to the K for being formed2CO3's
Solubility is higher than Na2CO3Solubility, so the more effective fouling for slowing down wet oxidation processing system.
During system operation, the clear water of cooling device is stored in clear water storage tank, and water is squeezed into cooler outer tube with clarified water pump
Entrance, the clear water of cooler outer tube outlet flows back to the recycling of clear water storage tank；Clear water in periodic replacement tank, it is ensured that cooling effect.
After reacted high temperature gas-liquid mixture is via the second heat exchanger outer tube, First Heat Exchanger outer tube in reaction unit, then through supercooling
But after device treatment, gas-liquid mixture temperature is reduced to 50~80 DEG C.
After system-down, in addition to normal clear water is rinsed, in addition it is also necessary to which start acid dip pickle carries out pickling processes to system.Cut
Valve and pipeline are changed, throw the medicament in dispensing canister into system by compound pump carries out pickling to each device and pipeline, goes
Except fouling.
Preferably, hotline heater starts during pickling, and it is 60~80 DEG C to keep temperature in reaction unit；What pickling was used
Medicament in dispensing canister is 2%HNO3；The pickling duration is more than 8 hours.
Beneficial effect：It is compared to prior art, the wet oxidation processing system of high concentrated organic wastewater of the present utility model
System carries out fully recycling come pre- thermal wastewater and high purity oxygen gas by multi-stage heat exchanger to reacted heat, it is possible to decrease system
Operating cost；With air it is raw material formed in-situ high purity oxygen gas by oxygenerator, for wet oxidation reaction, pollution can be improved
Thing removal efficiency；Using the wet oxidation reaction device of bimetallic composite, the catalyst tank that reaction unit inside is set can
For loading catalyst, be conducive to improving the corrosion resistance of reaction unit and reducing reaction condition；System can carry out running
Reaction unit deslagging in journey, advantageously reduces scaling and the risk for blocking；It is provided with sewage pretreatment device, it is possible to achieve
The function of the homogeneous, pH regulations and filtering of waste water；Active carbon adsorber is provided with, for removing the organic pollution in tail gas；This
System transfer and easy for installation, integration is good, safe and reliable to operation, can be widely applied to high concentration hard-degraded organic waste water
Wet oxidation treatment.
Brief description of the drawings
Fig. 1 is the flow chart of the wet oxidation processing system of the utility model high concentrated organic wastewater；
Fig. 2 is the concrete structure schematic diagram of the wet oxidation processing system of the utility model high concentrated organic wastewater.
Wherein：1 air compressor, 2 first omnibus control system tanks, 3 second omnibus control system tanks, 4 oxygen superchargers,
5 second heat exchangers, 6 reaction units, 7 wastewater storage tanks, 8 soda acid storage tanks, 9 waste water pumps, 10 automatically adjust acid and alkali pumps, the regulation of 11 waste water
Tank, 12 piping filters, 13 high-pressure plunger pumps, 14 First Heat Exchangers, 15 the 3rd heat exchangers, 16 Heat-transfer Oil Pumps, 17 conduction oils add
Hot device, 18 conduction oil head tanks, 19 coolers, 20 dropping equipments, 21 gas-liquid separation devices, 22 exhaust gas processing devices, 23 make up a prescription
Tank, 24 compound pumps, 25 clear water storage tanks, 26 clarified water pumps.
Specific embodiment
The wet oxidation processing system and method to the utility model high concentrated organic wastewater are done into one below in conjunction with the accompanying drawings
The detailed description of step.
Embodiment 1
A kind of wet oxidation processing system of high concentrated organic wastewater as shown in Figure 1, including be sequentially connected by pipeline
Pretreatment unit, hot oil heater and reaction unit 6；It is provided between the pretreatment unit and hot oil heater
First Heat Exchanger 14, is connected by the inner tube of First Heat Exchanger 14；The entrance of reaction unit 6 is provided with the bypass for being passed through oxygen, directly
Oxygenerator is connect in succession；The bypass for being passed through oxygen is provided with the second heat exchanger 5, and oxygen processed is caused by the inner tube of the second heat exchanger 5
Device is connected with the entrance of reaction unit 6；The outlet of reaction unit 6 is sequentially connected the outer tube of the second heat exchanger 5, first by pipeline
The outer tube of heat exchanger 14, cooling device, dropping equipment 20, gas-liquid separation device 21 and exhaust gas processing device 22.In addition, conduction oil
Bypass duct is provided between the import and export of heater；Bypass duct is provided between the entrance of reaction unit 6 and cooling device entrance,
Reaction unit 6 is also equipped with bypass duct between importing and exporting.
As shown in Fig. 2 the specific device and connected mode of a kind of wet oxidation processing system of high concentrated organic wastewater
It is as follows：
1st, oxygenerator：Including air compressor 1, the first omnibus control system tank 2, the and of the second omnibus control system tank 3
Oxygen supercharger 4.Wherein, the first omnibus control system tank of outlet connection 2 and second of air compressor 1 becomes compacting oxygen tank 3
Entrance, the first omnibus control system tank 2 and the second outlet for becoming compacting oxygen tank 3 are connected with the entrance of oxygen supercharger 4, and oxygen increases
The outlet of press 4 is connected with the entrance of the inner tube of the second heat exchanger 5, the outlet of the inner tube of the second heat exchanger 5 and the entrance of reaction unit 6
Connection.First omnibus control system tank 2 and the second entrance for becoming compacting oxygen tank 3 are respectively provided with the bypass of nitrogen discharge, and oxygen increases
The entrance of press 4 sets oxygen emptying bypass (be provided with emptying bypass and automatically adjust valve V1) and oxygen flow meter (FIC01).Separately
Outward, pressure sensor (PIC02) and automatic valve V2 are set on the outlet conduit of the inner tube of the second heat exchanger 5.
2nd, pretreatment unit：Including waste water regulation tank 11, waste water pump 9, wastewater storage tank 7, automatically adjust acid and alkali pumps 10, soda acid
Storage tank 8, piping filter 12 and high-pressure plunger pump 13.The entrance of the outlet connection waste water pump 9 of wastewater storage tank 7, soda acid tank 8 goes out
The entrance of mouth connection acid and alkali pumps 10, the outlet of waste water pump 9 and acid and alkali pumps 10 connects the two entrances that waste water adjusts tank 11 respectively, useless
The entrance of the outlet connecting pipe road filter 12 of water regulation tank 11, the outlet of piping filter 12 and the entrance of high-pressure plunger pump 13
Connection, the outlet of high-pressure plunger pump 13 is connected with the entrance of the inner tube of First Heat Exchanger 14, the outlet of the inner tube of First Heat Exchanger 14 and
The entrance connection of the inner tube of the 3rd heat exchanger 15, the outlet of the inner tube of the 3rd heat exchanger 15 is connected with the entrance of reaction unit 6, and the 3rd changes
The inner tube of hot device 15 is imported and exported and sets bypass and automatic valve V7, V8 and V9.Agitator and online is set on waste water regulation tank 11
PH meter (pHIC03), the start-up and shut-down control waste water for automatically adjusting acid and alkali pumps 10 reaches setting pH value.Pipe before high-pressure plunger pump 13
Flowmeter (FIC04) is set on road, and the frequency converter frequency for automatically adjusting plunger displacement pump realizes automatically adjusting for flow.
3rd, hot oil heater：It is high including Heat-transfer Oil Pump 16, hotline heater 17, the 3rd heat exchanger 15 and conduction oil
Position groove 18.The outlet of Heat-transfer Oil Pump 16 is connected with the entrance of hotline heater 17, the outlet of hotline heater 17 and the 3rd
The entrance connection of the outer tube of heat exchanger 15, the outlet of the outer tube of the 3rd heat exchanger 15 returns to the entrance of Heat-transfer Oil Pump 16, Heat-transfer Oil Pump 16
Import and export parallel connection conduction oil head tank 18.Temperature sensor TIC06 is provided with the inlet ductwork of the 3rd heat exchanger 15,
The inner tube of three heat exchangers 15 is imported and exported and sets bypass and valve V7, V8 and V9.In the inner tube the import and export pipeline of the 3rd heat exchanger 15
It is respectively provided with temperature sensor (TIC06) and (TIC07), temperature sensor (TIC06) the control terminal valve of the 3rd heat exchanger 15
The keying of door V7, V8 and V9, temperature sensor (TIC07) automatically controls the heating power of hotline heater 17.
4th, it is provided with catalyst tank in reaction unit 6；The wall of reaction unit 6 is made up of inside and outside two-layer, and outer layer is pressure-bearing
Layer, is made up of carbon steel or stainless steel, and internal layer is anti-corrosion layer, is made up of nickel-base alloy.The outlet of reaction unit 6 is changed with second
The entrance connection of the outer tube of hot device 5, the outlet of the outer tube of the second heat exchanger 5 is connected with the outer tube inlet of First Heat Exchanger 14, the first heat exchange
The outlet of the outer tube of device 14 is connected with the inner tube inlet of cooler 19, inner tube outlet and the automatic back pressure of dropping equipment 20 of cooler 19
The entrance connection of valve, the outlet of automatic counterbalance valve is connected with the entrance of the gas-liquid separator of gas-liquid separation device 21, gas-liquid separator
Gas vent be connected with the entrance of the active carbon adsorber of exhaust gas processing device 22, it is external by the gaseous product after adsorption treatment
Discharge, the water outlet of gas-liquid separator is collected disposal；Bypass is set between the export and import of reaction unit 6 and correlation is automatic
Valve V10, V13 and V12, connect, and be provided with automatic valve between the inner tube import of the entrance and cooler 19 of reaction unit 6
V12.Pressure sensor (TIC09) is set on reaction unit 6, and the aperture with dropping equipment 20 is chain, automatic control system pressure.
5th, cooling device：Including clear water storage tank 25, clarified water pump 26 and cooler 19.Clear water is stored in clear water storage tank 25,
The entrance of the outlet connection clarified water pump 26 of clear water storage tank 25, the outlet of clarified water pump 26 is connected with the outer tube inlet of cooler 19, cold
But the outer tube outlet of device 19 is connected with the water return outlet of clear water storage tank 25.In addition, the outlet of clarified water pump 26 and waste water adjust tank 11
Bypass duct is provided between outlet, the bypass duct is connected with acid dip pickle, and the acid dip pickle includes dispensing canister 23 and medicine
Agent pump 24, the outlet of dispensing canister 23 is connected with the import of compound pump 24, the outlet of compound pump 24 and the entrance of piping filter 12
Connection.
Dropping equipment 20 is automatic counterbalance valve.
Gas-liquid separation device 21 is gas-liquid separator.Liquid level gauge (LIC10), gas-liquid separator liquid are set on gas-liquid separator
Automatic regulating valve V14 is set on body export pipeline, and the aperture for automatically adjusting valve V14 controls liquid level gauge (LIC10) to reach setting
Value.
Exhaust gas processing device 22 is active carbon adsorber.
In terms of comprehensive, the system high degree of automation, it is safe and reliable to operation.The inlet ductwork of oxygen supercharger 4 sets oxygen
Flowmeter (FIC01) and emptying bypass automatically adjust valve V1, automatically adjust the oxygen stream that the control of valve V1 apertures enters system
Amount reaches required setting value；Pressure sensor (PIC02) and automatic valve are set on the pipeline of the inner tube outlet of the second heat exchanger 5
V2, as pressure (PIC06) of the pressure (PIC02) less than reaction unit 6, valve V2 is closed, oxygen feeding stop；Until (PIC02)
Higher than reaction unit 6 pressure (PIC06) when, valve V2 open, start oxygen supply.Waste water regulation tank 11 on set agitator and
Line pH meter (pHIC03), the start and stop regulation waste water for automatically adjusting acid and alkali pumps 10 reaches setting pH value.Before high-pressure plunger pump 13
Flowmeter (FIC04) is set on pipeline, and the frequency converter frequency for automatically adjusting plunger displacement pump realizes automatically adjusting for flow.Changed the 3rd
The inner tube the import and export pipeline of hot device 15 is respectively provided with temperature sensor (TIC06) and (TIC07), temperature sensor (TIC06) control
The keying of the 3rd heat exchanger 15 exits and entrances valve V7, V8 and V9 is made, temperature sensor (TIC07) automatically controls hotline heater
17 heating power.Pressure sensor (TIC09) is set on reaction unit 6, and the aperture with the automatic counterbalance valve of dropping equipment 20 connects
Lock, automatic control system pressure.Liquid level gauge (LIC10), gas-liquid separator liquid are set on the gas-liquid separator of gas-liquid separation device 21
Regulating valve V14 is set on body export pipeline, and the aperture for automatically adjusting valve V14 controls liquid level gauge (LIC10) to reach setting value.
Embodiment 2
The method for carrying out wet oxidation treatment to high concentrated organic wastewater using said system：
During system operation：
1st, air is forced into 0.4~0.8MPa through air compressor 1, becomes into the first omnibus control system tank 2 or second
Pressure adsorption oxygen-preparation tank 3；Wherein, omnibus control system tank be the using and the reserved, an oxygen tank processed when high purity oxygen gas are prepared, another
It is standby in discharge nitrogen.Purity more than 90% can be obtained by the first omnibus control system tank 2 or the second omnibus control system tank 3
High purity oxygen gas, automatically adjust the control of valve V1 apertures and reach required setting value into the oxygen flow of system；High purity oxygen gas are passed through
The pressurization of oxygen supercharger 4 can to 5~12MPa of reaction pressure, through the high purity oxygen gas for pressurization enter the inner tube of the second heat exchanger 5 with
Reacted fluid heat transfer, preheated rear temperature can reach 250~300 DEG C, be directly entered reaction unit 6.In operation, work as pressure
(PIC02) when less than pressure (PIC06) of reaction unit 6, valve V2 is closed, oxygen feeding stop；Until (PIC02) is filled higher than reaction
When putting 6 pressure (PIC06), valve V2 is opened, and starts oxygen supply.
2nd, waste water is had previously been stored in wastewater storage tank 7, stores appropriate in advance according to the actual pH of waste water, in soda acid tank 8
Acid solution (such as HNO3) or alkali lye (such as KOH), open waste water pump 9 and acid and alkali pumps 10 and waste water and soda acid are added into waste water regulation tank
11, while starting agitator and monitoring the pH of mixed material, the pH of material is controlled setting value (pH is 6~9).Regulate
Material filters particulate matter through piping filter 12, into high-pressure plunger pump 13, by the pressurization and flow control of high-pressure plunger pump 13
System, material enters the inner tube and reacted fluid heat transfer of First Heat Exchanger 14, such as the inner tube outlet temperature of First Heat Exchanger 14
Less than 200~250 DEG C, can further be heated with conduction oil into the 3rd heat exchanger 15, the material for reaching preheating condition enters anti-
Answer device 6；Inner tube outlet temperature such as First Heat Exchanger 14 has reached 200~250 DEG C, can be imported and exported through the 3rd heat exchanger 15
Bypass is directly entered reaction unit 6.
3rd, start Heat-transfer Oil Pump 16 and hotline heater 17, the outer tube of the 3rd heat exchanger 15 is entered after conduction oil is heated
Entrance, then flow back to heat-conducting oil heating system recycling from the outer tube outlet of the 3rd heat exchanger 15.After system is normally run, according to
The power of the temperature automatic adjustment hotline heater 17 of the inner tube outlet of the 3rd heat exchanger 15, temperature sensor TIC06 reaches and sets
When constant temperature is spent, bypass valve V9 is automatically opened up, and V7 and V8 are automatically switched off, and the 3rd heat exchanger 15 is stopped using, while conduction oil adds
Hot device 17 stops heating, can reduce system operation cost.To protect the safety of heat-conducting oil heating system, the meeting of Heat-transfer Oil Pump 16 one
Straight operation.
4th, high purity oxygen gas and material after preheating enter reaction unit 6 jointly, and wet oxidation reaction, reaction temperature occur
250~300 DEG C, 5~12MPa of reaction pressure, 1~2h of reaction time.By reaction, the hardly degraded organic substance point in organic wastewater
It is micromolecular compound to solve, and the P elements in organic phosphorus compound are decomposed into Phos, the nitrogen in organonitrogen compound point
It is ammonia nitrogen to solve, and the biodegradability of waste water is improve while removal waste water COD.Gas-liquid after reaction unit 6 is treated is mixed
Compound enters the outer tube of the second heat exchanger 5 and high pressure oxygen exchanges heat, and the outer tube into First Heat Exchanger 14 is carried out with waste water afterwards
Heat exchange, enters back into the outer tube of cooler 19 and clear water heat exchanger, 50 are reduced to by the gas-liquid mixture temperature after three-level cooling~
80 DEG C, then normal pressure is down to through dropping equipment 20, gas-liquid separator is entered after step-down.Gas enters through the top of gas-liquid separator lives
Property the treatment of charcoal absorber after discharge, liquid is arranged from outside the delivery port of gas-liquid separator lower end and focused on.
5th, when system is normally run, valve V10, V12 are opened, and valve V11, V13 are closed, waste water and the oxygen warp after preheating
Cross reaction unit 6 and enter follow-up equipment.System is carried out under running status in cleaning reaction device 6 during waste material, and valve V11, V13 are opened
Open, valve V10, V12 are closed, and waste water and oxygen after preheating do not enter reaction unit 6, and are directly entered follow-up equipment.Automatically
Adjusting the aperture of dropping equipment 20 makes system pressure 2~3MPa of reduction, and material and part waste material are from reaction unit in reaction unit 6
6 import enters cooler 19 through valve V11, is separated into gas-liquid separator 21 by after the step-down of dropping equipment 20.
6th, clear water is stored in clear water storage tank 25, and water is pumped into the outer tube inlet of cooler 19, cooler 19 with clarified water pump 26
The clear water of outer tube outlet flows back to clear water storage tank 25 and recycles；Clear water in periodic replacement tank, it is ensured that cooling effect.
7th, after system-down, normal clear water flushing is first carried out, then starts hotline heater 17, keep reaction unit
60~80 DEG C of temperature in 6, the medicament for restarting storage in the extraction dispensing canister 23 of compound pump 24 carries out pickling to pipeline and system, goes
Except fouling.Wherein, pickling medicament is 2%HNO3；The pickling duration is more than 8 hours.
It is sweet to grass using the wet oxidation processing system of the high concentrated organic wastewater of the present embodiment 1 and the method for embodiment 2
Phosphine and dimethoate pesticide waste water carry out wet oxidation treatment, and effect is shown in Table 1.
The wet oxidation of table 1 produces the treatment effect of waste water to glyphosate and dimethoate pesticide
Claims (10)
1. the wet oxidation processing system of a kind of high concentrated organic wastewater, it is characterised in that：
Including the pretreatment unit, hot oil heater and the reaction unit (6) that are sequentially connected by pipeline；
First Heat Exchanger (14) is provided between the pretreatment unit and hot oil heater, by First Heat Exchanger (14)
Inner tube is connected；
The entrance of the reaction unit (6) is provided with the bypass for being passed through oxygen, is directly connected to oxygenerator；The side for being passed through oxygen
Road is provided with the second heat exchanger (5), and the entrance of oxygenerator and reaction unit (6) is caused by the inner tube of the second heat exchanger (5)
Connection；
The outlet of the reaction unit (6) is sequentially connected the second heat exchanger (5) outer tube, First Heat Exchanger (14) outward by pipeline
Pipe, cooling device, dropping equipment (20), gas-liquid separation device (21) and exhaust gas processing device (22).
2. the wet oxidation processing system of high concentrated organic wastewater according to claim 1, it is characterised in that the heat conduction
Bypass duct is provided between the import and export of oil heating unit, and is provided with the temperature for temporarily terminating hot oil heater work
Sensor and automatic valve.
3. the wet oxidation processing system of high concentrated organic wastewater according to claim 1, it is characterised in that the reaction
The bypass duct and automatic valve for reaction unit (6) deslagging are provided between device (6) entrance and cooling device entrance, it is described
Oxygen and waste water is temporarily avoided to be passed through reaction dress when reaction unit (6) is provided with for reaction unit (6) deslagging between importing and exporting
Put the bypass duct and automatic valve of (6).
4. the wet oxidation processing system of the high concentrated organic wastewater according to any one in claim 1-3, its feature
It is that the pretreatment unit includes that waste water adjusts tank (11), and the waste water adjusts tank (11) two entrances, and one by pipe
Road is sequentially connected waste water pump (9) and wastewater storage tank (7), and another is sequentially connected by pipeline and automatically adjusts acid and alkali pumps (10) and acid
Alkali storage tank (8)；The outlet of waste water regulation tank (11) is sequentially connected piping filter (12) and high-pressure plunger pump (13), described
The outlet of high-pressure plunger pump (13) connected with First Heat Exchanger (14) inner tube.
5. the wet oxidation processing system of the high concentrated organic wastewater according to any one in claim 1-3, its feature
It is that the hot oil heater includes Heat-transfer Oil Pump (16), hotline heater (17), the 3rd heat exchanger (15) and heat conduction
Oily head tank (18), wherein, the outlet of Heat-transfer Oil Pump (16) is connected with the entrance of hotline heater (17), hotline heater
(17) outlet is connected with the entrance of the 3rd heat exchanger (15) outer tube, and the outlet of the 3rd heat exchanger (15) outer tube returns to Heat-transfer Oil Pump
(16) entrance, import and export parallel connection conduction oil head tank (18) of Heat-transfer Oil Pump (16).
6. the wet oxidation processing system of the high concentrated organic wastewater according to any one in claim 1-3, its feature
It is to be provided with catalyst tank in the reaction unit (6)；Reaction unit (6) wall is made up of inside and outside two-layer, and outer layer is to hold
Laminate layer, is made up of carbon steel or stainless steel, and internal layer is anti-corrosion layer, is made up of nickel-base alloy.
7. the wet oxidation processing system of the high concentrated organic wastewater according to any one in claim 1-3, its feature
It is air compressor (1), the first omnibus control system tank (2) that the oxygenerator includes being sequentially connected by pipeline, the
Two omnibus control system tanks (3) and oxygen supercharger (4), wherein, the first omnibus control system tank (2) and the second transformation are inhaled
The entrance of attached oxygen tank (3) processed is respectively equipped with the bypass of nitrogen discharge, and the entrance of the oxygen supercharger (4) is provided with oxygen emptying
Bypass, realizes automatically adjusting by valve and oxygen flow meter.
8. the wet oxidation processing system of the high concentrated organic wastewater according to any one in claim 1-3, its feature
It is that the cooling device includes the clear water storage tank (25), clarified water pump (26) and the cooler (19) that are sequentially communicated by pipeline.
9. the wet oxidation processing system of high concentrated organic wastewater according to claim 8, it is characterised in that the clear water
Bypass duct is provided between the outlet of pump (26) and the outlet of waste water regulation tank (11), the bypass duct is connected with pickling dress
Put, the acid dip pickle includes dispensing canister (23) and compound pump (24), when shutdown carries out system acid-washing, realize managing by valve
The switching on road.
10. the wet oxidation processing system of the high concentrated organic wastewater according to any one in claim 1-3, its feature
It is that the dropping equipment (20) is automatic counterbalance valve, the gas-liquid separation device (21) is gas-liquid separator, at the tail gas
Reason device (22) is active carbon adsorber.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106380021A (en) * | 2016-11-23 | 2017-02-08 | 江苏省环境科学研究院 | High-concentration organic wastewater wet oxidation treatment system and method |
| CN109592775A (en) * | 2018-12-31 | 2019-04-09 | 南京格洛特环境工程股份有限公司 | A kind of wet air oxidation processing method of spent lye |
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| CN114772832A (en) * | 2022-05-11 | 2022-07-22 | 清华大学 | Wet oxidation treatment system and process for high-concentration organic wastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106380021A (en) * | 2016-11-23 | 2017-02-08 | 江苏省环境科学研究院 | High-concentration organic wastewater wet oxidation treatment system and method |
| CN109592775A (en) * | 2018-12-31 | 2019-04-09 | 南京格洛特环境工程股份有限公司 | A kind of wet air oxidation processing method of spent lye |
| CN111362493A (en) * | 2019-12-23 | 2020-07-03 | 南京延长反应技术研究院有限公司 | System and method for treating high-salinity PMIDA wastewater |
| WO2021128727A1 (en) * | 2019-12-23 | 2021-07-01 | 南京延长反应技术研究院有限公司 | Treatment system and method for cephalosporin wastewater |
| CN113087251A (en) * | 2019-12-23 | 2021-07-09 | 南京延长反应技术研究院有限公司 | Benzene wastewater treatment system and method |
| US11358887B2 (en) | 2019-12-23 | 2022-06-14 | Nanjing Yanchang Reaction Technology Research Institute Co., Ltd. | Treatment system for PMIDA wastewater |
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| CN114772832A (en) * | 2022-05-11 | 2022-07-22 | 清华大学 | Wet oxidation treatment system and process for high-concentration organic wastewater |
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