CN106904806A - The integrated treatment reactor and processing method of a kind of sludge wet oxidation - Google Patents

The integrated treatment reactor and processing method of a kind of sludge wet oxidation Download PDF

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Publication number
CN106904806A
CN106904806A CN201710285278.1A CN201710285278A CN106904806A CN 106904806 A CN106904806 A CN 106904806A CN 201710285278 A CN201710285278 A CN 201710285278A CN 106904806 A CN106904806 A CN 106904806A
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sludge
reactor
gas
zoneofoxidation
guide shell
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CN106904806B (en
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杨欢
陈阳
覃小刚
房慧
文路
王焕
孙登科
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Dongfang Boiler Group Co Ltd
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Dongfang Boiler Group Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/06Treatment of sludge; Devices therefor by oxidation
    • C02F11/08Wet air oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/06Treatment of sludge; Devices therefor by oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/10Treatment of sludge; Devices therefor by pyrolysis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/06Sludge reduction, e.g. by lysis

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The invention discloses the integrated treatment reactor and processing method of sludge wet oxidation, reactor includes pyrohydrolysis area and zoneofoxidation and the outside bag of reactor is provided with heat-preserving heating jacket, and the bottom that agitator and pyrohydrolysis area are provided with pyrohydrolysis area is provided with slag-drip opening;Guide shell is set in zoneofoxidation, and guide shell is set along the short transverse of zoneofoxidation and the top of guide shell has extension mouth;It is provided with the side wall of zoneofoxidation at the top of sludge import, product exit and gas access and zoneofoxidation and is provided with gas vent, sludge import is opened in the lower section of the extension mouth of guide shell, gas access is opened in the lower section of sludge import and positioned at the bottom of zoneofoxidation, product exit is opened in the top of the extension mouth of guide shell, gas access and the first gas distributor connection being arranged between guide shell and the side wall of zoneofoxidation, are provided with sludge disperser at sludge import.Processing method then carries out the integrated treatment of sludge wet-type oxidation degradation using above-mentioned reactor.

Description

The integrated treatment reactor and processing method of a kind of sludge wet oxidation
Technical field
The present invention relates to the technical field of Treatment of Sludge, more particularly, it is related to a kind of integration of sludge wet oxidation Treatment reactor and processing method.
Background technology
Sludge wet oxidation is, after the another Treatment of Sludge mode after burning, landfill, anaerobic fermentation, aerobic compost, to utilize Gaseous oxidant " wet combustion " is carried out to the organic matter in sludge under high temperature, high pressure with reach sludge reduction, it is innoxious, Stabilized purpose.
Existing Wet Oxidation Process all contains two critical process steps substantially:1) preprocessing process of sludge, city (viscosity of aqueous about 80%) is big, low without mobility, mass-and heat-transfer efficiency, directly processes for the particularly municipal dewatered sludge of political affairs sludge There is very big difficulty, all first sludge can be pre-processed typically before wet oxidation, change the proterties of dewatered sludge, reduce viscous Degree, increase mobility, this process is the pyrohydrolysis of sludge by the way of;2) oxidation of pyrohydrolysis sludge, it is dirty in pyrohydrolysis Sludge is further processed at high temperature under high pressure using oxygen/air on the basis of mud.
In the prior art, Chinese patent literature CN104341082A is entered in hydrolytic reaction pot using high-temperature steam to sludge It is input into high-temperature oxydation tower after row pyrohydrolysis to be aoxidized, Chinese patent literature CN102786190A is using the liquid of heat in pretreatment Input oxidation reactor is further processed after carrying out pyrohydrolysis to primary sludge in device.But at such sludge wet oxidation Two main devices have been comprised at least in reason flow:Pyrohydrolysis reactor (or preatreating reactors) and wet oxidation reaction device, Reaction system is numerous and diverse, floor space is high, economy is low.
It is existing to be related in sludge wet oxidation patent most of reactor using semi-batch tank reactor, such as China specially Sharp document CN201981109U, Chinese patent literature CN105776794A.Sludge enters reactor from entrance, at high temperature under high pressure Sludge outlet discharge after maintenance certain residence time from below.But such reactor mass-transfer efficiency is low, stirring is uneven very Hot-spot is easily caused, the mode of operation of semi-batch is also more bothered.Meanwhile, the wet oxidation process of sludge is a heat release Reaction, can produce the gaseous product of HTHP, existing sludge wet-type oxidation technology to be directed to this portion gas all only after oxidation The heat in waste gas is make use of, but in fact in the gas of reactor discharge still containing some oxygen of reaction that is not able to do in time Gas.
The content of the invention
In order to solve technical problem present in prior art, it is an object of the invention to provide a kind of heat for having merged sludge Hydrolysis and oxidizing process and ensure abundant mass transfer and reaction sludge wet oxidation integrated treatment reactor and processing method.
An aspect of of the present present invention provides a kind of integrated treatment reactor of sludge wet oxidation, and the reactor includes The outside bag of zoneofoxidation and reactor positioned at the pyrohydrolysis area of reactor lower part and positioned at reactor middle and upper part is provided with insulation Heating mantle, wherein,
The bottom that agitator and pyrohydrolysis area are provided with the pyrohydrolysis area is provided with slag-drip opening;
Guide shell is set in the zoneofoxidation, and the guide shell is set along the short transverse of zoneofoxidation and guide shell Top has extension mouth;Sludge import, product exit and gas access and zoneofoxidation are provided with the side wall of the zoneofoxidation Top is provided with gas vent, and the sludge import is opened in the lower section of the extension mouth of the guide shell, and the gas access is opened It is located at the lower section of sludge import and positioned at the bottom of zoneofoxidation, the product exit is opened in the extension mouth of the guide shell Top, wherein, the gas access and the first gas distributor being arranged between the guide shell and the side wall of zoneofoxidation connect Connect, sludge disperser is provided with the sludge import.
One embodiment of integrated treatment reactor according to sludge wet oxidation of the present invention, in the pyrohydrolysis area Agitator is magnetic stirrer, and the rotary shaft of the magnetic stirrer is not directly connected to transmission with the output shaft of motor;The row The quantity of cinder notch is at least one.
One embodiment of integrated treatment reactor according to sludge wet oxidation of the present invention, the heat-preserving heating jacket Heating medium is electricity, oily or steam, and when using oil or steam as heating medium, the Heat preservation puts and is additionally provided with Jie Matter entrance and media outlet.
One embodiment of integrated treatment reactor according to sludge wet oxidation of the present invention, in reactor start-up most The first stage is heated using the heat-preserving heating jacket to reactor, and heating is stopped after stable reaction, wherein, on reactor also It is provided with temperature measuring unit and pressure measuring unit.
One embodiment of integrated treatment reactor according to sludge wet oxidation of the present invention, the gas access is passed through Gaseous oxidant be oxygen and/or air, the sludge that the sludge import is passed through is the sludge that water content is 80~90%;Institute It is 150~350 DEG C to state the reaction temperature in reactor, and pressure is 2~20MPa.
One embodiment of integrated treatment reactor according to sludge wet oxidation of the present invention, the top of the zoneofoxidation With the gas compartment, reacted waste gas passes through gas vent outflow reactor after entering the gas compartment, wherein, a part Waste gas is back in reactor after pressurizeing again, and another part waste gas is used to preheat fresh sludge or gaseous oxidant or direct Discharged after carrying out vent gas treatment.
One embodiment of integrated treatment reactor according to sludge wet oxidation of the present invention, the side wall of the zoneofoxidation On be additionally provided with circulating air entrance, the circulating air entrance by external gas circuit be connected with the gas vent with will a part it is useless Gas is back in reactor, wherein, the circulating air entrance is opened in the lower section of sludge import and in the top of gas access, institute The second gas distributor connection stated circulating air entrance and be arranged between the guide shell and the side wall of zoneofoxidation.
It is wet using above-mentioned sludge another aspect provides a kind of integral treatment method of sludge wet oxidation The integrated treatment reactor of formula oxidation carries out the integrated treatment of sludge wet-type oxidation degradation, the sludge after being processed.
One embodiment of integral treatment method according to sludge wet oxidation of the present invention, methods described includes following step Suddenly:
A, first by the liquid level lifting control in reactor to aoxidizing more than product exit, the gas for being forced into predetermined pressure Agent passes through gas access and first gas distributor into uniform bubbling in the zoneofoxidation of reactor, while opening heat-preserving heating jacket Temperature in reactor is heated to predetermined temperature;
B, sludge is passed through in reactor after the sludge disperser of sludge import disperses, sludge sinks to reactor lower part Pyrohydrolysis area and in the presence of agitator mix, hydrolysis become sludge slurry;The sludge slurry pyrohydrolysis area top with Current enter zoneofoxidation and by the up-flow interior circulation inside and outside guide shell and the gaseous oxidant haptoreaction and release Substantial amounts of reaction heat, heating is stopped after question response stabilization;
C, the bulk sandstone that deposition is intermittently discharged from slag-drip opening, recycle by after the reaction that gas vent flows out Waste gas, the sludge from after product exit extraction, until complete sludge wet-type oxidation degradation treatment, wherein, sludge is taken out Output is highly controlled with the normal level of liquid being able to maintain that in reactor.
One embodiment of integral treatment method according to sludge wet oxidation of the present invention, a part of waste gas is added again It is back in reactor after pressure, another part waste gas is used to preheat fresh sludge or gaseous oxidant or tail gas is directly carried out Discharged after treatment.
The present invention incorporates sludge pyrohydrolysis and two processes of sludge wet oxidation in sludge wet oxidation process, same Realize that sludge wet oxidation is processed in one reactor, be effectively improved the economy of sludge wet oxidation equipment, it is reasonable in design And it is workable;Present invention reduces the limit value to feed sludge water content, from the dewatered sludge without mobility, (80% contains Water) it is applicable to the sludge (90% water content) with mobility, directly fed without pretreatment;Reactor is out Waste gas in include unreacted oxygen, during waste gas reenters reactor by extraneous gas circulation, improve gas anti- The residence time in device is answered, sludge degradation efficiency is improve, the utilization rate of oxygen is also improved.
Brief description of the drawings
Fig. 1 shows the structure of the integrated treatment reactor of sludge wet oxidation according to an exemplary embodiment of the present invention Schematic diagram.
Fig. 2 shows the structural representation of sludge disperser.
Description of reference numerals:
1- reactors, 2- pyrohydrolysis area, 3- zoneofoxidations, 4- agitators, 5- slag-drip openings, 6- guide shells, 7- extension mouths, 8- are dirty Mud import, 9- product exits, 10- gas accesses, 11- gas vents, 12- circulating air entrance, 13- gas circulators, 14- first Gas distributor, 15- second gas distributors.
Specific embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive Feature and/or step beyond, can combine by any way.
Any feature disclosed in this specification, unless specifically stated otherwise, can be equivalent or with similar purpose by other Alternative features are replaced.I.e., unless specifically stated otherwise, each feature is an example in a series of equivalent or similar characteristics .
The invention provides a kind of reactor for being integrated with sludge hot hydrolysis-oxidation process, reactor is divided into pyrohydrolysis area And zoneofoxidation, zoneofoxidation is formal to use the up-flow interior circulation reaction formation having compared with high mass transfer efficiency, is discharged after reaction Waste gas passes through to be again introduced into the residence time of raising oxygen in reactor, having taken into account economy, reaction efficiency and treatment The many aspects such as effect.
The structure and principle first to the integrated treatment reactor of sludge wet oxidation of the present invention are carried out specifically below It is bright.
Fig. 1 shows the structure of the integrated treatment reactor of sludge wet oxidation according to an exemplary embodiment of the present invention Schematic diagram.
As shown in figure 1, exemplary embodiment of the invention, the integrated treatment reactor of the sludge wet oxidation The outside bag of zoneofoxidation 3 and reactor 1 including the pyrohydrolysis area 2 positioned at the bottom of reactor 1 and positioned at the middle and upper part of reactor 1 It is provided with heat-preserving heating jacket (not shown).Wherein, the pyrohydrolysis area 2 of bottom is used to realize the pyrohydrolysis of sludge, and zoneofoxidation 3 is used for real The oxidative degradation of existing pyrohydrolysis sludge, heat-preserving heating jacket then realizes the heating and insulation effect to reactor.
Specifically, agitator 4 is provided with pyrohydrolysis area 2 and the bottom in pyrohydrolysis area 2 is provided with slag-drip opening 5.Hot water Solution area 2 is located at the bottom of reactor, then when reactor works, sludge is into can directly sink to bottom and in high temperature after reactor Hydrolyzed in the pyrohydrolysis area 2 of high pressure, the sludge after hydrolysis turns into the slurry condition that particle diameter is small, mobility is high, thus, it is possible to upper Zoneofoxidation under the drive of portion's current into top carries out oxidative degradation.
Preferably, the agitator 4 in pyrohydrolysis area 2 uses magnetic stirrer, and magnetic stirrer rotary shaft not with The output shaft of motor is directly connected to transmission, solves the problems, such as mechanical agitator with reactor bearing sealing failure and leakage, agitator 4 Lasting stirring action the sludge is uniformly heated, it is to avoid the situation of hot-spot.The slag-drip opening energy of the bottom of pyrohydrolysis area 2 Than larger solid of not allowing, such as bulk sandstone, the quantity of slag-drip opening 5 is preferably at least one to enough periodically discharge proportion.
The heat-preserving heating jacket for being heated to reactor is provided with outside reactor 1, the heating medium of heat-preserving heating jacket can With using electricity, oil or steam, when using oil or steam as heating medium when, Heat preservation put be additionally provided with medium inlet and Media outlet.And, it is only necessary to the initial period started in reactor 1 is heated using heat-preserving heating jacket to reactor 1, dirty Liberated heat is enough to maintain the normal operation of whole reactor after mud starts reaction, and heating can be stopped after stable reaction. For the ease of the temperature and pressure situation in detection reactor 1, temperature measuring unit and pressure measuring unit are additionally provided with reactor 1 (not Show).
Also, guide shell 6 is provided with zoneofoxidation 3, guide shell 6 is set and water conservancy diversion along the short transverse of zoneofoxidation 3 The top of cylinder 6 has extension mouth 7;Sludge import 8, product exit 9 and gas access 10 and oxygen are provided with the side wall of zoneofoxidation 3 The top for changing area 3 is provided with gas vent 9, and sludge import 8 is opened in the lower section of the extension mouth 7 of guide shell 6, and gas access 10 is opened It is located at the lower section of sludge import 8 and positioned at the bottom of zoneofoxidation 3, product exit 9 is opened in the upper of the extension mouth 7 of guide shell 6 Side, gas access 10 and the first gas distributor 14 being arranged between guide shell 6 and the side wall of zoneofoxidation 3 are connected, and sludge enters Sludge disperser is provided with mouth 8.Wherein, first gas distributor 14 is in fact that ring is located at outside guide shell 6 and can lead Equably realize that gas sprays and is distributed, the gas vent court of first gas distributor 15 between flow cartridge 6 and the side wall of zoneofoxidation 3 Upper setting.Fig. 2 shows the structural representation of sludge disperser, as shown in Fig. 2 sludge disperser is AND DEWATERING FOR ORIFICE STRUCTURE form, greatly Block sludge enters reactor after sludge disperser is dispersed into fritter, is conducive to effectively carrying out for subsequent treatment.Additionally, in order to The extraction of product is convenient for, product exit 9 is preferably provided in the opposite side of sludge import.
Wherein, the gaseous oxidant that gas access 10 is passed through is oxygen and/or air, preferably oxygen;Sludge import 8 is led to The sludge for entering is the sludge that water content is 80~90%, and reactor of the invention reduces the limitation to feed sludge water content, It is applicable to the sludge (90% is aqueous) with mobility from the dewatered sludge (80% is aqueous) without mobility, without pretreatment Directly feed;The mud that product exit 9 is used for after continuous extraction, the liquid level in maintenance reaction device;Gas vent 11 Then it is used to discharge the waste gas after sludge reaction.Preferably, the reaction temperature in reactor of the present invention 1 is 150~350 DEG C, pressure It is 2~20MPa.
Zoneofoxidation 3 is actually up-flow inner circulation structure, passes through by the gaseous oxidant (air/oxygen) after pressurization Gas access 10 and first gas distributor 14 enter zoneofoxidation 3, drive the pyrohydrolysis mud in bed to flow up, and form gas Liquid solid three-phase fluid.When three-phase fluid reach guide shell 6 extension mouth 7 height when, gas kept because the small buoyancy of density is big to Upper flowing is turned over greatly stream because of density and is entered in extension mouth 7 and inside guide shell 6 up to gas vent 11, liquid and sludge bulky grain Guide shell 6 is flowed downward out, the exterior space between guide shell 6 and zoneofoxidation side wall is reentered, continued under the drive of air-flow Flow up, form the self-loopa process that a complete cycle cake maintains whole reaction system.Mud granule is in guide shell 6 Outer not section circulation, increased residence time of the sludge in zoneofoxidation 3, and the organic matter in sludge is fully degraded and obtained everywhere Sludge after reason.It follows that the set location of above-mentioned each mouth of reactor is closely related with overall structure and technique and non- Often important, it directly determines that can reaction be normally carried out and circulate normally maintain.
Air and/or oxygen are entered after reactor 1 by gas access 10, are transported upwards in reactor in bubbling mode Mud is moved and driven in the interior circulation of reactor 1.A large amount of minute bubbles, minute bubbles can be formed by controlling gas flow in zoneofoxidation 3 Specific surface area is larger, it is possible to increase the mass-transfer efficiency of gas-liquid-solid three-phase.Reacted waste gas (including unreacted air, oxygen, Vapor and the gas of reaction generation) from ullage leave reaction zone and discharge.Wherein, the top of zoneofoxidation 3 also has gas Body space, reacted waste gas passes through the outflow reactor 1. of gas vent 11 again after entering the gas compartment by foam removal
Preferably, in order to effectively utilize reacted waste gas, after a part of waste gas pressurizes again through the grade of gas circulator 13 It is recycled back in reactor 1, another part waste gas is used to preheat fresh sludge or gaseous oxidant or directly carries out tail gas Discharged after treatment, improve the utilization rate of oxygen.
Accordingly, circulating air entrance 12 is additionally provided with the side wall of zoneofoxidation 3, circulating air entrance 12 is by external gas circuit It is connected with gas vent 11 and is back in reactor 1 with by a part of waste gas, wherein, circulating air entrance 12 is opened in sludge import 8 lower section and in the top of gas access 10, circulating air entrance 12 and is arranged between guide shell 6 and the side wall of zoneofoxidation 3 Second gas distributor 15 is connected.Similarly, second gas distributor 15 is in fact also that ring is located at outside guide shell 6 and can Gas ejection is equably realized between guide shell 6 and the side wall of zoneofoxidation 3 and in the top of first gas distributor 14 and divide Cloth, the gas vent of second gas distributor 16 is set upward, improves the gas residence time in the reactor, and further carry Sludge degradation efficiency high and oxygen utilization rate.
For the defect of sludge wet oxidation processing equipment in the prior art, the present invention proposes a kind of highly integrated anti- Device is answered, the pyrohydrolysis and oxidizing process of sludge has been merged, practicality is higher;Also, reactor of the invention is actually a kind of Up-flow interior circulation flow reactor, sludge bubble ratio in reactor interior circulation ensure that its residence time, and reactor Surface area is larger, and alternate contact is good and mass-transfer efficiency is high;Additionally, reacted waste gas circulation is passed through reactor by the present invention again In, the gaseous oxidant residence time in the reactor can be increased, the utilization rate of oxygen is improved, carried significantly in economy Rise.To sum up, the present invention proposes rational solution for prior art, tries hard to be found most in economy and treatment effeciency Good scheme, in can be applied to Practical Project in the future.
Next, then the integral treatment method to sludge wet oxidation of the invention is specifically described.It is of the invention Method carries out the integrated treatment of sludge wet-type oxidation degradation using the integrated treatment reactor of above-mentioned sludge wet oxidation, obtains Sludge after to treatment.Specifically, the method is comprised the following steps:
A, first by the liquid level lifting control in reactor to aoxidizing more than product exit, the gas for being forced into predetermined pressure Agent passes through gas access and first gas distributor into uniform bubbling in the zoneofoxidation of reactor, while opening heat-preserving heating jacket Temperature in reactor is heated to predetermined temperature;
B, sludge is passed through in reactor after the sludge disperser of sludge import disperses, sludge sinks to reactor lower part Pyrohydrolysis area and in the presence of agitator mix, hydrolysis become sludge slurry;The sludge slurry pyrohydrolysis area top with Current enter zoneofoxidation and by the up-flow interior circulation inside and outside guide shell and the gaseous oxidant haptoreaction and release Substantial amounts of reaction heat, heating is stopped after question response stabilization;
C, the bulk sandstone that deposition is intermittently discharged from slag-drip opening, recycle by after the reaction that gas vent flows out Waste gas, the sludge from after product exit extraction, until complete sludge wet-type oxidation degradation treatment, wherein, sludge is taken out Output is highly controlled with the normal level of liquid being able to maintain that in reactor.
During reaction, it is back in reactor after preferably a part of waste gas is pressurizeed again, by another part Waste gas be used to preheat fresh sludge or gaseous oxidant or directly carry out vent gas treatment after discharge.
With reference to specific embodiment to the integrated treatment reactor and processing method of sludge wet oxidation of the invention It is described further.
Integrated treatment reactor shown in Fig. 1 is used for sludge oxidative degradation, is needed liquid level before reactor start-up first It is promoted to more than product exit.Air and/or oxygen pressing are entered to 5MPa and from gas access and first gas distributor Uniform bubbling is carried out in the zoneofoxidation of reactor, drives current to be circulated in inside reactor when bubble is moved upwards.
The start-up temperature of the heating mantle maintenance reaction device of reactor external insulation is at 250 DEG C.Heating medium can using electricity, Oil or steam, when using oil or steam, correspondingly set medium inlet and outlet on muff.Reactor heating is only needed to Carried out within a period of time that device has just started, liberated heat is enough to maintain the normal of whole reactor after sludge starts reaction Operation.
The sludge that water content is 80~90% is passed through from the sludge disperser dispersion of sludge import, sludge sinks to bottom Pyrohydrolysis area simultaneously starts to mix in the presence of magnetic stirrer, hydrolyzes, and sludge character changes, by not having consolidating for mobility Body is changed into the slurry with certain fluidity, then enters zoneofoxidation and air and/or oxygen with current at the top in pyrohydrolysis area Gas haptoreaction simultaneously releases substantial amounts of reaction heat.Temperature measuring unit is set on reactor to monitor the temperature in reactor as 250 DEG C, I.e. when external heat is stopped after stable reaction, the reaction heat maintenance reaction released using reaction is carried out.
Reacted mud is extracted out from product exit, and extracted amount is highly controlled with maintaining normal level of liquid.Mud with Gas is flowed up between guide shell and zoneofoxidation side wall, and when reaching expansion open height, heavier mud granule ploughs under water conservancy diversion Cylinder inside and from guide shell bottom outflow reenter circulation.Slurries gas content outside guide shell is high, density is low and to Upper flowing;Slurries gas content inside guide shell is low, density is high and moves downward, and maintains the self-loopa of whole reaction system Journey.Cyclic process increased residence time of the sludge in zoneofoxidation, and the organic matter in sludge is fully degraded.Reacting Cheng Zhong, the bulk sandstone for being deposited on bottom is intermittently discharged from the slag-drip opening of reactor bottom.
Reacted waste gas (including gas of unreacted air, oxygen, vapor and reaction generation) flows upwards out liquid Face enters the gas compartment with reactor top, by passing through gas vent outflow reactor after the demister of top.A part is useless Gas is forced into slightly above system pressure and returns to reactor, another part from recyclegas entrance again under gas circulation pumping action Waste gas enters downstream and can be used to preheat fresh sludge or oxidant by heat exchanger, can also be directly over vent gas treatment dress Postpone discharge.
In sum, integrated treatment reactor of the invention and processing method incorporate dirt in sludge wet oxidation process Mud pyrohydrolysis and two processes of sludge wet oxidation, realize that sludge wet oxidation is processed in same reactor, effectively carry The economy of sludge wet oxidation equipment high, it is reasonable in design and workable;Present invention reduces aqueous to feed sludge The limit value of amount, from the dewatered sludge (80% water content) without mobility to the sludge (90% water content) with mobility It is applicable, directly fed without pretreatment;Unreacted oxygen is included in reactor waste gas out, waste gas passes through outside gas Body circulation is reentered in reactor, improves the gas residence time in the reactor, improves sludge degradation efficiency, is also carried The utilization rate of oxygen high.
The invention is not limited in foregoing specific embodiment.The present invention is expanded to and any in this manual disclosed New feature or any new combination, and disclose any new method or process the step of or any new combination.

Claims (10)

1. a kind of integrated treatment reactor of sludge wet oxidation, it is characterised in that the reactor includes being located at reactor The outside bag of the pyrohydrolysis area of bottom and the zoneofoxidation positioned at reactor middle and upper part and reactor is provided with heat-preserving heating jacket, its In,
The bottom that agitator and pyrohydrolysis area are provided with the pyrohydrolysis area is provided with slag-drip opening;
Guide shell, short transverse setting and the top of guide shell of the guide shell along zoneofoxidation are set in the zoneofoxidation With extension mouth;The top of sludge import, product exit and gas access and zoneofoxidation is provided with the side wall of the zoneofoxidation Gas vent is provided with, the sludge import is opened in the lower section of the extension mouth of the guide shell, and the gas access is opened in The lower section of sludge import and positioned at the bottom of zoneofoxidation, the product exit is opened in the upper of the extension mouth of the guide shell Side, wherein, the gas access and the first gas distributor being arranged between the guide shell and the side wall of zoneofoxidation are connected, Sludge disperser is provided with the sludge import.
2. the integrated treatment reactor of sludge wet oxidation according to claim 1, it is characterised in that the pyrohydrolysis area In agitator be magnetic stirrer, the rotary shaft of the magnetic stirrer is not directly connected to transmission with the output shaft of motor;Institute The quantity for stating slag-drip opening is at least one.
3. the integrated treatment reactor of sludge wet oxidation according to claim 1, it is characterised in that the Heat preservation The heating medium of set is electricity, oily or steam, and when using oil or steam as heating medium, the Heat preservation puts and also sets up There are medium inlet and media outlet.
4. the integrated treatment reactor of sludge wet oxidation according to claim 1, it is characterised in that in reactor start-up Initial period reactor is heated using the heat-preserving heating jacket, after stable reaction stop heating, wherein, reactor On be additionally provided with temperature measuring unit and pressure measuring unit.
5. the integrated treatment reactor of sludge wet oxidation according to claim 1, it is characterised in that the gas access The gaseous oxidant being passed through is oxygen and/or air, and the sludge that the sludge import is passed through is the dirt that water content is 80~90% Mud;Reaction temperature in the reactor is 150~350 DEG C, and pressure is 2~20MPa.
6. the integrated treatment reactor of sludge wet oxidation according to claim 1, it is characterised in that the zoneofoxidation There is the gas compartment, reacted waste gas to pass through gas vent outflow reactor after entering the gas compartment on top, wherein, one Portion is back in reactor after pressurizeing again, another part waste gas be used to preheating fresh sludge or gaseous oxidant or Discharged after directly carrying out vent gas treatment.
7. the integrated treatment reactor of sludge wet oxidation according to claim 6, it is characterised in that the zoneofoxidation Circulating air entrance is additionally provided with the wall of side, the circulating air entrance is connected with by one by external gas circuit with the gas vent Waste gas is divided to be back in reactor, wherein, the circulating air entrance is opened in the lower section of sludge import and in the upper of gas access Side, the circulating air entrance and the second gas distributor connection being arranged between the guide shell and the side wall of zoneofoxidation.
8. a kind of integral treatment method of sludge wet oxidation, it is characterised in that using any one of claim 1 to 7 institute Stating the integrated treatment reactor of sludge wet oxidation carries out the integrated treatment of sludge wet-type oxidation degradation, after being processed Sludge.
9. the integral treatment method of sludge wet oxidation according to claim 8, it is characterised in that methods described include with Lower step:
A, first by the liquid level lifting control in reactor to leading to more than product exit, the gaseous oxidant for being forced into predetermined pressure Gas access and first gas distributor into uniform bubbling in the zoneofoxidation of reactor are crossed, while open heat-preserving heating jacket will be anti- The temperature in device is answered to be heated to predetermined temperature;
B, sludge is passed through in reactor after the sludge disperser of sludge import disperses, sludge sinks to the heat of reactor lower part Hydrolysis area and in the presence of agitator mix, hydrolysis become sludge slurry;The sludge slurry pyrohydrolysis area top with current Into zoneofoxidation and by the up-flow interior circulation inside and outside guide shell and the gaseous oxidant haptoreaction and release a large amount of Reaction heat, question response stabilization after stop heating;
C, the bulk sandstone that deposition is intermittently discharged from slag-drip opening, recycle by the reacted useless of gas vent outflow Gas, the sludge from after product exit extraction, until the wet-type oxidation degradation treatment of sludge is completed, wherein, sludge extracted amount Highly it is controlled with the normal level of liquid being able to maintain that in reactor.
10. the integral treatment method of sludge wet oxidation according to claim 9, it is characterised in that by a part of waste gas Again it is back in reactor after pressurizeing, another part waste gas is used to preheat fresh sludge or gaseous oxidant or is directly entered Discharged after end of line gas disposal.
CN201710285278.1A 2017-04-27 2017-04-27 Integrated treatment reactor for wet oxidation of sludge and treatment method Active CN106904806B (en)

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CN107758830A (en) * 2017-11-22 2018-03-06 江苏省环境科学研究院 The reactor of dismountable wet oxidation processing waste water
CN108218217A (en) * 2018-04-11 2018-06-29 王丽 A kind of preform for fiber manufacturing manufactures device
CN108773992A (en) * 2018-04-02 2018-11-09 苏伊士水务工程有限责任公司 Sludge treatment system and method for treating sludge by using same
CN109970315A (en) * 2019-03-08 2019-07-05 同济大学 A kind of High Efficiency Thermal hydrolysis apparatus and method of municipal sludge

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Publication number Priority date Publication date Assignee Title
CN107758830A (en) * 2017-11-22 2018-03-06 江苏省环境科学研究院 The reactor of dismountable wet oxidation processing waste water
CN107758830B (en) * 2017-11-22 2023-09-05 江苏省环境科学研究院 Detachable wet oxidation wastewater treatment reactor
CN108773992A (en) * 2018-04-02 2018-11-09 苏伊士水务工程有限责任公司 Sludge treatment system and method for treating sludge by using same
CN108773992B (en) * 2018-04-02 2024-08-20 苏伊士环境科技(北京)有限公司 Sludge treatment system and method for treating sludge by using same
CN108218217A (en) * 2018-04-11 2018-06-29 王丽 A kind of preform for fiber manufacturing manufactures device
CN109970315A (en) * 2019-03-08 2019-07-05 同济大学 A kind of High Efficiency Thermal hydrolysis apparatus and method of municipal sludge

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