WO2022082626A1 - Wet oxidation micro-interface system - Google Patents

Wet oxidation micro-interface system Download PDF

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Publication number
WO2022082626A1
WO2022082626A1 PCT/CN2020/122883 CN2020122883W WO2022082626A1 WO 2022082626 A1 WO2022082626 A1 WO 2022082626A1 CN 2020122883 W CN2020122883 W CN 2020122883W WO 2022082626 A1 WO2022082626 A1 WO 2022082626A1
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Prior art keywords
micro
oxidation reactor
liquid
oxidation
inlet
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PCT/CN2020/122883
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French (fr)
Chinese (zh)
Inventor
张志炳
周政
张锋
李磊
孟为民
王宝荣
杨高东
罗华勋
杨国强
田洪舟
曹宇
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南京延长反应技术研究院有限公司
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Publication of WO2022082626A1 publication Critical patent/WO2022082626A1/en

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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
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays
    • 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
    • C02F1/727—Treatment of water, waste water, or sewage by oxidation using pure oxygen or oxygen rich gas
    • 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
    • C02F1/74—Treatment of water, waste water, or sewage by oxidation with air
    • 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
    • C02F2303/14—Maintenance of water treatment installations
    • 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
    • C02F2303/26—Reducing the size of particles, liquid droplets or bubbles, e.g. by crushing, grinding, spraying, creation of microbubbles or nanobubbles

Definitions

  • the invention relates to the field of wet oxidation, in particular to a wet oxidation micro-interface system.
  • the wet oxidation technology generally has a relatively high operating temperature and relatively high pressure, which not only requires relatively high equipment, high energy consumption, and high cost, but also reduces the operational safety, and the equipment is prone to aging and damage.
  • the residence time in the reactor is short, and most of the oxygen floats out of the reactor without fully reacting, which reduces the reaction efficiency and increases the processing cost.
  • the existing wet oxidation reactor requires a lot of manpower in the process of maintenance and cleaning, including entering the oxidation reactor through manholes for washing and on-site operation of various pipeline valves. This not only increases labor costs, but also reduces the safety of production.
  • the object of the present invention is to provide a wet oxidation micro-interface system.
  • the wet oxidation micro-interface system is provided with a liquid injector in the oxidation reactor.
  • the liquid injector can efficiently crush the water for cleaning the oxidation reactor into micron-scale liquid. Drops, and the ejector collides with the top of the oxidation reactor instead of manual cleaning, so as to achieve the effect of improving mass transfer.
  • the invention provides a wet oxidation micro-interface system, comprising: a waste water heat exchanger, a waste water heater, and an oxidation reactor, and the waste water heat exchanger is provided with a material inlet, a material outlet, a heat source inlet and a heat source outlet; the The oxidized water from the oxidation reactor enters the waste water heat exchanger from the heat source inlet, and the material outlet is connected to the waste water heater;
  • the middle area of the bottom surface of the oxidation reactor protrudes upward to form a plane, the flat parts on both sides of the convex plane of the bottom surface of the oxidation reactor are respectively provided with liquid outlets, and the side wall of the oxidation reactor is provided with a liquid inlet
  • a liquid injector is arranged in the upper part of the oxidation reactor, the bottom of the liquid injector is a plane, and the top is a semicircular arc surface, and several injection ports are arranged in sequence on the semicircular arc surface, The injection direction of the injection port is toward the top of the oxidation reactor, and the liquid inlet is connected with the bottom of the liquid injector through a pipeline.
  • the wet oxidation micro-interface system of the invention firstly filters the waste water and sends it to the waste water heat exchanger to exchange heat with the waste water that has been treated by wet oxidation from the oxidation reactor, and then passes through the waste water heater after the heat exchange. After further heating, the heated waste water is sent to the oxidation reactor for oxidation treatment. Before the oxidation reactor works, the inside of the oxidation reactor is carefully cleaned by the clean water sprayed from the jet port.
  • the wet oxidation reactor requires a lot of manpower in the process of maintenance and cleaning, including entering the oxidation reactor through manholes for cleaning and on-site operation of various pipeline valves. This not only increases labor costs, but also reduces the safety of production.
  • the present invention provides a wet oxidation micro-interface system with a specific structure. Mist, thereby improving the spray effect and correspondingly improving the mass transfer effect.
  • the raw materials can also be sprayed in this way during the feeding process. The raw materials are efficiently broken into mist through the spray port, thereby increasing the contact area between the raw materials, improving the reaction efficiency, and further improving the conversion rate of raw materials and yield. rate and other indicators.
  • the reason why the center of the bottom of the oxidation reactor is raised upward is to efficiently discharge the materials in the oxidation reactor from the liquid outlet.
  • the scheme is implemented to make the center position of the bottom of the oxidation reactor bulge upward and be a plane.
  • the protrusions are in the shape of a semi-circular arc, which can further reduce the possibility of fluid accumulation.
  • the liquid outlet is set into a conical structure, which can accelerate the discharge of materials.
  • a mesh surface with a plurality of micropores evenly distributed is laid in each of the jetting openings.
  • the liquid ejector of the present invention is mainly connected with the liquid port through a pipeline, and the cleaning water is introduced into the liquid ejector and sprayed out through the ejection port on the semicircular arc surface of the liquid ejector.
  • the reason why it is designed as a semicircle The structure of the arc-shaped surface is to improve the cleaning effect and ensure that the sprayed cleaning water can clean the wall surface of the oxidation reactor in an all-round way.
  • a mesh with a plurality of evenly distributed micropores is laid in each of the spray ports. After the sprayed water is broken and dispersed, it becomes mist to improve the mass transfer effect, which is also equivalent to the corresponding effect of the micro-interface generator.
  • the liquid inlet is connected to the central position of the bottom of the liquid ejector through a pipeline, so that the incoming liquid just enters from the middle of the liquid ejector, and the liquid can be ejected more uniformly.
  • a stirring paddle is provided at the center bulge of the inner bottom of the oxidation reactor to accelerate the discharge.
  • the stirring paddle is also arranged in the raised position to improve the discharge efficiency of the fermentation product, and the fermentation efficiency can also be improved by stirring.
  • two stirring paddles are arranged side by side at the protruding plane at the bottom of the oxidation reactor.
  • liquid inlets there are two liquid inlets, one of which is connected to the liquid injector through a pipeline, and the other is arranged near the bottom of the oxidation reactor.
  • the liquid injector When cleaning the inside of the oxidation reactor, it can not only have the effect of cleaning the upper part of the oxidation reactor, but also the effect of cleaning the lower part of the oxidation reactor.
  • a micro-interface generator can also be arranged in the oxidation reactor, and the micro-interface generator is arranged directly below the liquid injector, and the micro-interface generator is used in combination with the liquid injector to improve the two The effect of synergy between them.
  • the number of the micro-interface generators is two, which are arranged in order from top to bottom.
  • the micro-interface generators are designed to be used in conjunction with each other, and the specific type is preferably a pneumatic micro-interface generator, because the pneumatic type is relatively low-cost and easy to install.
  • two air inlets for entering compressed air are provided on the side wall of the oxidation reactor, and the two air inlets are both connected with an air compression device, and each of the air inlets is connected to a pipe through a pipeline.
  • Corresponding micro-interface generator connections After the air or oxygen is compressed by the air compressor, it enters the micro-interface generator from the air inlet for dispersion and crushing.
  • the air inlet and the micro-interface generator are preferably in one-to-one correspondence, so that the efficiency of air intake can be improved.
  • the micro-interface generator in the oxidation reactor breaks the air into micro-scale micro-bubbles and releases the micro-bubbles into the interior to increase the mass transfer area of the phase boundary between the raw materials during the reaction process, so that the two phases are fully contacted and improved.
  • the concentration of the dissolved gas in the liquid phase improves the efficiency and shortens the reaction time.
  • micro-interface generator used in the present invention has been embodied in the inventor's prior patents, such as application numbers CN201610641119.6, CN201610641251.7, CN201710766435.0, CN106187660, CN105903425A, Patents of CN109437390A, CN205833127U and CN207581700U.
  • application numbers CN201610641119.6, CN201610641251.7, CN201710766435.0, CN106187660, CN105903425A, Patents of CN109437390A, CN205833127U and CN207581700U In the previous patent CN201610641119.6, the specific product structure and working principle of the micro-bubble generator (that is, the micro-interface generator) were introduced in detail.
  • the body is provided with an inlet communicating with the cavity, the opposite first and second ends of the cavity are open, wherein the cross-sectional area of the cavity is from the middle of the cavity to the first and second ends of the cavity.
  • the second end is reduced; the secondary crushing piece is arranged at at least one of the first end and the second end of the cavity, a part of the secondary crushing piece is arranged in the cavity, and both ends of the secondary crushing piece and the cavity are open
  • An annular channel is formed between the through holes of the micro-bubble generator.
  • the micro-bubble generator also includes an air inlet pipe and a liquid inlet pipe.” From the specific structure disclosed in the application document, we can know that its specific working principle is: the liquid enters the micron tangentially through the liquid inlet pipe. In the bubble generator, ultra-high-speed rotation and cutting of the gas make the gas bubbles break into micro-bubbles at the micron level, thereby increasing the mass transfer area between the liquid phase and the gas phase, and the micro-bubble generator in this patent belongs to the pneumatic micro-interface generation. device.
  • the previous patent 201610641251.7 records that the primary bubble breaker has a circulating liquid inlet, a circulating gas inlet and a gas-liquid mixture outlet, and the secondary bubble breaker communicates the feed port with the gas-liquid mixture outlet, indicating that the bubble breaker is both It needs to be mixed with gas and liquid.
  • the primary bubble breaker mainly uses circulating liquid as power, so in fact, the primary bubble breaker belongs to the hydraulic micro-interface generator, and the secondary bubble breaker is a gas-liquid breaker. The mixture is simultaneously fed into the elliptical rotating ball for rotation, so that the bubbles are broken during the rotation, so the secondary bubble breaker is actually a gas-liquid linkage type micro-interface generator.
  • micro-interface generator used in the present invention is not limited to the above several forms.
  • specific structure of the bubble breaker described in the prior patent is only one of the forms that the micro-interface generator of the present invention can take.
  • previous patent 201710766435.0 recorded that "the principle of the bubble breaker is to achieve high-speed jets to achieve gas collision", and also stated that it can be used in micro-interface enhanced reactors to verify the relationship between the bubble breaker and the micro-interface generator.
  • the top of the bubble breaker is the liquid phase inlet, and the side is the gas phase inlet.
  • the liquid phase entering from the top provides the entrainment power, so as to achieve the effect of crushing into ultra-fine bubbles, which can also be seen in the accompanying drawings.
  • the bubble breaker has a conical structure, and the diameter of the upper part is larger than that of the lower part, so that the liquid phase can provide better entrainment power.
  • micro-interface generator Since the micro-interface generator was just developed in the early stage of the previous patent application, it was named as micro-bubble generator (CN201610641119.6), bubble breaker (201710766435.0), etc., and later changed its name to micro-interface generator with continuous technological improvement.
  • the micro-interface generator in the present invention is equivalent to the previous micro-bubble generator, bubble breaker, etc., but the names are different.
  • the micro-interface generator of the present invention belongs to the prior art, although some micro-interface generators belong to the type of pneumatic micro-interface generators, some micro-interface generators belong to the type of hydraulic micro-interface generators, and some are of the type of hydraulic micro-interface generators. It belongs to the type of gas-liquid linkage micro-interface generator, but the difference between the types is mainly selected according to the specific working conditions.
  • the connection between the micro-interface generator and the reactor and other equipment including the connection structure, connection position, It depends on the structure of the micro-interface generator, which is not limited.
  • a liquid injector is arranged in the oxidation reactor.
  • the liquid injector can efficiently break the water for cleaning the oxidation reactor into micron-sized droplets, and collide with the oxidation reaction through the injector.
  • the upper part of the device replaces manual cleaning, and in addition, the raw materials actually participating in the reaction can also be efficiently broken into micron-sized droplets, so as to achieve the effect of improving the mass transfer of the reaction;
  • the wet oxidation micro-interface system of the present invention can realize the cooperation between the liquid ejector and the micro-interface generator, so that the micro-interface generator can break the air into micro-bubbles of micron scale, and release the micro-bubbles into the interior,
  • the two phases are fully contacted, the concentration of the dissolved gas in the liquid phase is increased, the efficiency is improved, and the reaction time is shortened.
  • FIG. 1 is a schematic structural diagram of a wet oxidation micro-interface system provided by an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of a mesh surface of a wet oxidation micro-interface system according to an embodiment of the present invention.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • installed should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements.
  • FIG. 1 it is a wet oxidation micro-interface system according to an embodiment of the present invention, which mainly includes a waste water heat exchanger 30, a waste water heater 40, and an oxidation reactor 10;
  • the waste water heat exchanger 30 is provided with a material inlet 301, a material outlet 302, heat source inlet 303 and heat source outlet 304;
  • the oxidized water from the oxidation reactor enters the waste water heat exchanger 30 from the heat source inlet 303, and the material outlet 302 is connected to the waste water heater 40;
  • the reactor 10 is provided with a liquid injector 103 and a micro-interface generator 105.
  • the micro-interface generator 105 is arranged just below the liquid injector 103.
  • the side wall of the oxidation reactor 10 is provided with a liquid inlet 101, which is also provided with useful
  • the liquid injector 103 and the liquid inlet 101 are connected by pipes, the bottom of the liquid injector 103 is flat, and the top surface is a semicircular arc surface.
  • a number of injection ports 1031 are arranged in sequence on the upper surface, the injection direction of the injection ports 1031 is toward the top of the oxidation reactor 10, and the liquid inlet 101 is connected to the bottom of the liquid injector 103 through a pipeline, preferably by connecting with the liquid injector 103.
  • the bottom center is connected to the liquid injector 103, and the liquid entering the liquid ejector 103 is broken into micro-droplets with a diameter of micrometers, and ejected from the ejection port 1031 raised on the surface to collide with the top of the oxidation reactor for efficient cleaning.
  • a mesh surface 1032 with a plurality of micropores evenly distributed in the spray port 1031 is laid. The number of mesh surfaces 1032 is not limited. See Figure 2 for details.
  • the number of micro-interface generators is two, which are arranged in order from top to bottom.
  • the two air inlets 106 are connected to the air compressor 20, and each air inlet 106 is connected to the corresponding micro-interface generator through a pipeline. .
  • the bottom of the oxidation reactor 10 is provided with a liquid outlet 102 for discharging the materials accumulated at the bottom of the oxidation reactor 10 .
  • Both sides of the bottom of the oxidation reactor 10 are flat, and the center position is raised upward to form a plane.
  • the liquid outlets 102 are respectively provided at the flat positions on both sides of the bottom of the oxidation reactor 10.
  • the liquid outlets 102 are used to discharge waste liquid, oxidize
  • a stirring paddle 104 is provided on the central raised plane at the bottom of the reactor 10 to accelerate the discharge, and the direction of the blade is upward for stirring at the bottom of the oxidation reactor 10 for flushing and draining, and the rotational speed can be adjusted steplessly.
  • liquid inlets 101 provided on the side wall of the oxidation reactor 10 , one of the liquid inlets 101 is connected with the liquid injector 103 through a pipeline, and the other liquid inlet 101 is provided near the bottom of the oxidation reactor 10. In this way, efficient liquid feed can be achieved for various positions inside the oxidation reactor 10 .
  • This embodiment also includes a PLC (or DCS, PLC and DCS) control system: connected to the sensor of the oxidation reactor 10, for intelligently controlling process operations and parameters, realizing remote control of production, in line with production intelligence.
  • PLC or DCS, PLC and DCS
  • the cleaning water above the oxidation reactor 10 is transported to the inside of the liquid ejector 103 through the liquid inlet 101 and sprayed out through the jetting port 1031 on the arc surface, and is efficiently broken into micron-level through the mesh surface 1032 (1 ⁇ m ⁇ d ⁇ 1 mm) droplets are ejected from the protruding ejection port 1031 on the surface of the liquid ejector 103 , collide with the top of the oxidation reactor 10 and clean the top.
  • the cleaned droplets form a liquid level at the bottom of the tank.
  • the installation direction of the blades of the stirring paddle 104 is downward, the liquid above the blades will be pumped to the two sides below, and vortices will be formed on both sides of the stirring paddle 104 to wash and clean both sides of the lower part of the oxidation reactor 10 .
  • the lower water circuit is opened, and the input water flow cleans the side wall of the oxidation reactor under the action of the stirring paddle 104.
  • the water delivery valve is closed.
  • the liquid outlet 102 of the device discharges water, closes the liquid outlet 102, and adjusts the speed to 50rpm/min.
  • the waste water is sent into the waste water heat exchanger 30 from the material inlet 301 through the conveying pump for heat exchange, and then goes out from the material outlet 302 and then passes through the waste water heater 40 for further heating, and the heated waste water enters the oxidation reaction.
  • the oxidation treatment is carried out in the reactor, and the compressed air or compressed oxygen compressed by the air compressor 20 is introduced from the air inlet 106 of the side wall of the oxidation reactor, and is first processed by the micro-interface generator 105 before the oxidation reaction is carried out to improve the phase.
  • the mass transfer efficiency of the interface, the top of the oxidation reactor is provided with a vent, the purified water treated by the oxidation reactor enters the waste water heat exchanger 30 from the heat source inlet 303 and exchanges heat with the waste water to be treated, and then goes out from the heat source outlet 304. Reuse.
  • the reaction temperature of the oxidation reactor 10 is 200-220° C., and the reaction pressure is 2-3 MPa.
  • the solution of the present invention realizes not only the dispersion and crushing of the liquid phase, but also the dispersion and crushing of the gas phase through the cooperation of the liquid ejector and the micro-interface generator. particles, so as to improve the mass transfer effect of the system.
  • the wet oxidation micro-interface system of the invention has high processing capacity, ensures high wet oxidation treatment effect under the condition of relatively low energy consumption, the removal rate of harmful substances and COD can reach 99%, and the cleaning is convenient, eliminating the need for manual operation .

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
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  • Chemical & Material Sciences (AREA)
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Abstract

Provided is a wet oxidation micro-interface system, the wet oxidation micro-interface system comprising: a wastewater heat exchanger, a wastewater heater, and an oxidation reactor, a material inlet, a material outlet, a heat source inlet, and a heat source outlet all being provided on the wastewater heat exchanger; oxidized water coming from the oxidation reactor enters into the wastewater heat exchanger via the heat source inlet, and the material outlet is connected to the wastewater heater; an intermediate region at a bottom face of the oxidation reactor upwardly protrudes and becomes a flat surface, liquid outlets are respectively arranged at level parts at two sides of the protruding flat surface at the bottom face of the oxidation reactor, and a liquid inlet is arranged on a side wall of the oxidation reactor; a liquid sprayer is arranged at an upper part within the oxidation reactor, a bottom part of the liquid sprayer is a flat surface, and a top part is a semicircular arcing face, a plurality of spray openings are sequentially arranged on the semicircular arcing face, a spray direction of the spray openings is oriented toward a top part of the oxidation reactor, and the liquid inlet is connected to a bottom part of the liquid sprayer by means of a pipe. The wet oxidation micro-interface system of the present invention saves on cleaning and on-site operation costs.

Description

一种湿式氧化微界面***A Wet Oxidation Micro-Interface System 技术领域technical field
本发明涉及湿式氧化领域，具体而言，涉及一种湿式氧化微界面***。The invention relates to the field of wet oxidation, in particular to a wet oxidation micro-interface system.
背景技术Background technique
目前，湿式氧化技术普遍操作温度比较高，压力也比较大，这样不仅对设备要求比较高，能耗高，成本高，也降低了操作安全性，设备容易老化损坏，并且在反应氧化过程中氧气在反应器中的停留时间短，大部分的氧气未进行充分的反应便浮出反应器，这样一来降低了反应效率也增加了处理成本。At present, the wet oxidation technology generally has a relatively high operating temperature and relatively high pressure, which not only requires relatively high equipment, high energy consumption, and high cost, but also reduces the operational safety, and the equipment is prone to aging and damage. The residence time in the reactor is short, and most of the oxygen floats out of the reactor without fully reacting, which reduces the reaction efficiency and increases the processing cost.
并且，现有湿式氧化反应器在检修清洗的过程中需要大量的人力，包括通过人孔进入氧化反应器内部洗刷以及各管路阀门的现场操作等。这样既提高了人力成本，同时降低了生产的安全性。In addition, the existing wet oxidation reactor requires a lot of manpower in the process of maintenance and cleaning, including entering the oxidation reactor through manholes for washing and on-site operation of various pipeline valves. This not only increases labor costs, but also reduces the safety of production.
有鉴于此，特提出本发明。In view of this, the present invention is proposed.
发明内容SUMMARY OF THE INVENTION
本发明的目的在于提供一种湿式氧化微界面***，该湿式氧化微界面***通过在氧化反应器内设置液体喷射器，一方面液体喷射器可将清洗氧化反应器的水高效破碎成微米级液滴，并通过喷射器冲撞氧化反应器上方取代人工进行清洗，从而达到提高传质的效果。The object of the present invention is to provide a wet oxidation micro-interface system. The wet oxidation micro-interface system is provided with a liquid injector in the oxidation reactor. On the one hand, the liquid injector can efficiently crush the water for cleaning the oxidation reactor into micron-scale liquid. Drops, and the ejector collides with the top of the oxidation reactor instead of manual cleaning, so as to achieve the effect of improving mass transfer.
为了实现本发明的上述目的，特采用以下技术方案：In order to realize the above-mentioned purpose of the present invention, the following technical solutions are specially adopted:
本发明提供了一种湿式氧化微界面***，包括：废水换热器、废水加热器、氧化反应器，所述废水换热器上设置有物料进口、物料出口、热源进口以及热源出口；所述氧化反应器出来的氧化水从所述热源进口进入所述废水换热器中，所述物料出口连接所述废水加热器；The invention provides a wet oxidation micro-interface system, comprising: a waste water heat exchanger, a waste water heater, and an oxidation reactor, and the waste water heat exchanger is provided with a material inlet, a material outlet, a heat source inlet and a heat source outlet; the The oxidized water from the oxidation reactor enters the waste water heat exchanger from the heat source inlet, and the material outlet is connected to the waste water heater;
所述氧化反应器的底面中间区域向上凸起呈平面，在所述氧化反应器底面凸起平面的两侧平整部分别设置有出液口，所述氧化反应器的侧壁上设置有进液口；所述氧化反应器内上部设置有液体喷射器，所述液体喷射器的底部为平面，顶部呈半圆形弧面，所述半圆形弧面上依次排布有若干个喷射口，所述喷射口的喷射方向朝向氧化反应器的顶部，所述进液口通过管道与所述液体喷射器的底部连接。The middle area of the bottom surface of the oxidation reactor protrudes upward to form a plane, the flat parts on both sides of the convex plane of the bottom surface of the oxidation reactor are respectively provided with liquid outlets, and the side wall of the oxidation reactor is provided with a liquid inlet A liquid injector is arranged in the upper part of the oxidation reactor, the bottom of the liquid injector is a plane, and the top is a semicircular arc surface, and several injection ports are arranged in sequence on the semicircular arc surface, The injection direction of the injection port is toward the top of the oxidation reactor, and the liquid inlet is connected with the bottom of the liquid injector through a pipeline.
本发明的湿式氧化微界面***，具体工作时先将废水初步过滤后送入废水换热器与从氧化反应器出来的经过湿式氧化处理过的废水进行换热，换热后再经过废水加热器进行进一步的加热，加热后的废水送入氧化反应器中进行氧化处理，氧化反应器在工作之前先通过喷射口喷射出来的清水对内部进行仔细的清洗。The wet oxidation micro-interface system of the invention firstly filters the waste water and sends it to the waste water heat exchanger to exchange heat with the waste water that has been treated by wet oxidation from the oxidation reactor, and then passes through the waste water heater after the heat exchange. After further heating, the heated waste water is sent to the oxidation reactor for oxidation treatment. Before the oxidation reactor works, the inside of the oxidation reactor is carefully cleaned by the clean water sprayed from the jet port.
现有技术中，湿式氧化反应器在检修清洗的过程中需要大量的人力，包括通过人孔进入氧化反应器内部洗刷以及各管路阀门的现场操作等。这样既提高了人力成本，同时降低了生产的安全性。In the prior art, the wet oxidation reactor requires a lot of manpower in the process of maintenance and cleaning, including entering the oxidation reactor through manholes for cleaning and on-site operation of various pipeline valves. This not only increases labor costs, but also reduces the safety of production.
本发明为了提高湿式氧化微界面***的清洗效果，提供了一种具有特定结构的湿式氧化微界面***，主要依靠设置在半圆形弧面上的喷射口喷射过程中将清洗水进行高效破碎形成雾状，从而提高喷淋效果，也相应的提高传质效果。当然，其实原料在进料的过程中也可以采用这样的喷射方式，原料通过喷射口进行高效破碎成雾状，从而提高原料之间的接触面积，提高反应效率，并进而提高原料转化率以及收率等指标。In order to improve the cleaning effect of the wet oxidation micro-interface system, the present invention provides a wet oxidation micro-interface system with a specific structure. Mist, thereby improving the spray effect and correspondingly improving the mass transfer effect. Of course, in fact, the raw materials can also be sprayed in this way during the feeding process. The raw materials are efficiently broken into mist through the spray port, thereby increasing the contact area between the raw materials, improving the reaction efficiency, and further improving the conversion rate of raw materials and yield. rate and other indicators.
另外，氧化反应器的底部中心位置向上凸起的原因是为了将氧化反应器内的物料高效的从出液口排出，如果底部均为平整的会有少部分物料残留，所以最好按照本发明的方案来实施将氧化反应器底部的中心位置向上凸起呈平面。当然更优地方式是凸起呈半圆弧形，这样更能降低积液的可能性。并且出液口设置成锥形的结构更能加速物料的排出。In addition, the reason why the center of the bottom of the oxidation reactor is raised upward is to efficiently discharge the materials in the oxidation reactor from the liquid outlet. The scheme is implemented to make the center position of the bottom of the oxidation reactor bulge upward and be a plane. Of course, a better way is that the protrusions are in the shape of a semi-circular arc, which can further reduce the possibility of fluid accumulation. And the liquid outlet is set into a conical structure, which can accelerate the discharge of materials.
优选地，每个所述喷射口内铺设有均布多个微孔的网面。Preferably, a mesh surface with a plurality of micropores evenly distributed is laid in each of the jetting openings.
本发明的液体喷射器主要是跟进液口通过管道连接，通过将清洗水引入到液体喷射器中，并通过液体喷射器半圆形弧面上的喷射口喷射出去，之所以设计成半圆形弧面的结构是为了提高清洗效果，保证喷射出去的清洗水能够对氧化反应器的壁面进行全方位的清洗，此外优选地，每个所述喷射口内铺设有均布多个微孔的网面，这样喷射出去的水被打碎分散后，成雾状以提高传质效果，也相当于起到了微界面发生器相应的效果。The liquid ejector of the present invention is mainly connected with the liquid port through a pipeline, and the cleaning water is introduced into the liquid ejector and sprayed out through the ejection port on the semicircular arc surface of the liquid ejector. The reason why it is designed as a semicircle The structure of the arc-shaped surface is to improve the cleaning effect and ensure that the sprayed cleaning water can clean the wall surface of the oxidation reactor in an all-round way. In addition, preferably, a mesh with a plurality of evenly distributed micropores is laid in each of the spray ports. After the sprayed water is broken and dispersed, it becomes mist to improve the mass transfer effect, which is also equivalent to the corresponding effect of the micro-interface generator.
优选地，所述进液口通过管道与所述液体喷射器底部中心位置连接，这样进入的液体正好从液体喷射器的中部进入，能够更加均匀的喷射出液体。Preferably, the liquid inlet is connected to the central position of the bottom of the liquid ejector through a pipeline, so that the incoming liquid just enters from the middle of the liquid ejector, and the liquid can be ejected more uniformly.
优选地，所述氧化反应器内底部中心凸起处设置有搅拌桨以起到加速排料的作用。凸起的位置设置搅拌桨也是为了提高发酵产物排出的效率，而且通过搅拌还能提升发酵效率。Preferably, a stirring paddle is provided at the center bulge of the inner bottom of the oxidation reactor to accelerate the discharge. The stirring paddle is also arranged in the raised position to improve the discharge efficiency of the fermentation product, and the fermentation efficiency can also be improved by stirring.
为了提高搅拌效果，优选地搅拌桨的数量为两个，并排设置在所述氧化反应器底部凸起平面处。In order to improve the stirring effect, preferably two stirring paddles are arranged side by side at the protruding plane at the bottom of the oxidation reactor.
优选地，所述进液口为两个，其中一个所述进液口与所述液体喷射器通过管道连接，另一个所述进液口设置在靠近所述氧化反应器底部的位置。这样当对氧化反应器内部进行清洗时，既能起到对氧化反应器内上部进行清洗的效果，也能起到对氧化反应器内下部进行清洗的效果。Preferably, there are two liquid inlets, one of which is connected to the liquid injector through a pipeline, and the other is arranged near the bottom of the oxidation reactor. In this way, when cleaning the inside of the oxidation reactor, it can not only have the effect of cleaning the upper part of the oxidation reactor, but also the effect of cleaning the lower part of the oxidation reactor.
优选地，本发明还可以在氧化反应器内设置微界面发生器，所述微界面发生器设置在所述液体喷射器的正下方，将微界面发生器与液体喷射器结合使用，以提高两者之间互相协同配合的效果。Preferably, in the present invention, a micro-interface generator can also be arranged in the oxidation reactor, and the micro-interface generator is arranged directly below the liquid injector, and the micro-interface generator is used in combination with the liquid injector to improve the two The effect of synergy between them.
优选地，所述微界面发生器的个数为两个，由上到下依次排列。微界面发生器设计成两个可互相配合使用，且其具体类型最好为气动式微界面发生器，因为气动式类型相对成本低，容易安装。Preferably, the number of the micro-interface generators is two, which are arranged in order from top to bottom. The micro-interface generators are designed to be used in conjunction with each other, and the specific type is preferably a pneumatic micro-interface generator, because the pneumatic type is relatively low-cost and easy to install.
优选地，在所述氧化反应器的侧壁上设置有用于进入压缩空气的两个进气口，两个所述进气口均连接有空压装置，每个所述进气口通过管道与相对应的微界面发生器连接。通过空压装置对空气或氧气进行压缩后，从进气口进入到 微界面发生器中进行分散破碎。并且进气口与微界面发生器最好一一对应，这样可以提高进气的效率。Preferably, two air inlets for entering compressed air are provided on the side wall of the oxidation reactor, and the two air inlets are both connected with an air compression device, and each of the air inlets is connected to a pipe through a pipeline. Corresponding micro-interface generator connections. After the air or oxygen is compressed by the air compressor, it enters the micro-interface generator from the air inlet for dispersion and crushing. In addition, the air inlet and the micro-interface generator are preferably in one-to-one correspondence, so that the efficiency of air intake can be improved.
氧化反应器内的微界面发生器将空气破碎成微米尺度的微气泡，并将微气泡释放到内部，以增大反应过程中原料之间的相界传质面积，使得两相充分接触，提高液相中的溶解气体的浓度，提高效率，缩短反应时间。The micro-interface generator in the oxidation reactor breaks the air into micro-scale micro-bubbles and releases the micro-bubbles into the interior to increase the mass transfer area of the phase boundary between the raw materials during the reaction process, so that the two phases are fully contacted and improved. The concentration of the dissolved gas in the liquid phase improves the efficiency and shortens the reaction time.
本领域所属技术人员可以理解的是，本发明所采用的微界面发生器在本发明人在先专利中已有体现，如申请号CN201610641119.6、CN201610641251.7、CN201710766435.0、CN106187660、CN105903425A、CN109437390A、CN205833127U及CN207581700U的专利。在先专利CN201610641119.6中详细介绍了微米气泡发生器(即微界面发生器)的具体产品结构和工作原理，该申请文件中记载了“微米气泡发生器包括本体和二次破碎件、本体内具有空腔，本体上设有与空腔连通的进口，空腔的相对的第一端和第二端均敞开，其中空腔的横截面积从空腔的中部向空腔的第一端和第二端减小；二次破碎件设在空腔的第一端和第二端中的至少一个处，二次破碎件的一部分设在空腔内，二次破碎件与空腔两端敞开的通孔之间形成一个环形通道。微米气泡发生器还包括进气管和进液管。”从该申请文件中公开的具体结构可以知晓其具体工作原理为：液体通过进液管切向进入微米气泡发生器内，超高速旋转并切割气体，使气体气泡破碎成微米级别的微气泡，从而提高液相与气相之间的传质面积，而且该专利中的微米气泡发生器属于气动式微界面发生器。Those skilled in the art can understand that the micro-interface generator used in the present invention has been embodied in the inventor's prior patents, such as application numbers CN201610641119.6, CN201610641251.7, CN201710766435.0, CN106187660, CN105903425A, Patents of CN109437390A, CN205833127U and CN207581700U. In the previous patent CN201610641119.6, the specific product structure and working principle of the micro-bubble generator (that is, the micro-interface generator) were introduced in detail. There is a cavity, the body is provided with an inlet communicating with the cavity, the opposite first and second ends of the cavity are open, wherein the cross-sectional area of the cavity is from the middle of the cavity to the first and second ends of the cavity. The second end is reduced; the secondary crushing piece is arranged at at least one of the first end and the second end of the cavity, a part of the secondary crushing piece is arranged in the cavity, and both ends of the secondary crushing piece and the cavity are open An annular channel is formed between the through holes of the micro-bubble generator. The micro-bubble generator also includes an air inlet pipe and a liquid inlet pipe." From the specific structure disclosed in the application document, we can know that its specific working principle is: the liquid enters the micron tangentially through the liquid inlet pipe. In the bubble generator, ultra-high-speed rotation and cutting of the gas make the gas bubbles break into micro-bubbles at the micron level, thereby increasing the mass transfer area between the liquid phase and the gas phase, and the micro-bubble generator in this patent belongs to the pneumatic micro-interface generation. device.
另外，在先专利201610641251.7中有记载一次气泡破碎器具有循环液进口、循环气进口和气液混合物出口，二次气泡破碎器则是将进料口与气液混合物出口连通，说明气泡破碎器都是需要气液混合进入，另外从后面的附图中可知，一次气泡破碎器主要是利用循环液作为动力，所以其实一次气泡破碎器属于液动式微界面发生器，二次气泡破碎器是将气液混合物同时通入到椭圆形的旋转球中进行旋转，从而在旋转的过程中实现气泡破碎，所以二次气泡破碎器实际上是属于气液联动式微界面发生器。其实，无论是液动式微界面发生器， 还是气液联动式微界面发生器，都属于微界面发生器的一种具体形式，然而本发明所采用的微界面发生器并不局限于上述几种形式，在先专利中所记载的气泡破碎器的具体结构只是本发明微界面发生器可采用的其中一种形式而已。此外，在先专利201710766435.0中记载到“气泡破碎器的原理就是高速射流以达到气体相互碰撞”，并且也阐述了其可以用于微界面强化反应器，验证本身气泡破碎器与微界面发生器之间的关联性；而且在先专利CN106187660中对于气泡破碎器的具体结构也有相关的记载，具体见说明书中第[0031]-[0041]段，以及附图部分，其对气泡破碎器S-2的具体工作原理有详细的阐述，气泡破碎器顶部是液相进口，侧面是气相进口，通过从顶部进来的液相提供卷吸动力，从而达到粉碎成超细气泡的效果，附图中也可见气泡破碎器呈锥形的结构，上部的直径比下部的直径要大，也是为了液相能够更好的提供卷吸动力。In addition, the previous patent 201610641251.7 records that the primary bubble breaker has a circulating liquid inlet, a circulating gas inlet and a gas-liquid mixture outlet, and the secondary bubble breaker communicates the feed port with the gas-liquid mixture outlet, indicating that the bubble breaker is both It needs to be mixed with gas and liquid. In addition, it can be seen from the following drawings that the primary bubble breaker mainly uses circulating liquid as power, so in fact, the primary bubble breaker belongs to the hydraulic micro-interface generator, and the secondary bubble breaker is a gas-liquid breaker. The mixture is simultaneously fed into the elliptical rotating ball for rotation, so that the bubbles are broken during the rotation, so the secondary bubble breaker is actually a gas-liquid linkage type micro-interface generator. In fact, whether it is a hydraulic micro-interface generator or a gas-liquid linkage micro-interface generator, they all belong to a specific form of the micro-interface generator. However, the micro-interface generator used in the present invention is not limited to the above several forms. , the specific structure of the bubble breaker described in the prior patent is only one of the forms that the micro-interface generator of the present invention can take. In addition, the previous patent 201710766435.0 recorded that "the principle of the bubble breaker is to achieve high-speed jets to achieve gas collision", and also stated that it can be used in micro-interface enhanced reactors to verify the relationship between the bubble breaker and the micro-interface generator. and the prior patent CN106187660 also has related records for the specific structure of the bubble breaker, see the specific description in paragraphs [0031]-[0041], and the accompanying drawings, which are related to the bubble breaker S-2 The specific working principle of the bubble breaker is explained in detail. The top of the bubble breaker is the liquid phase inlet, and the side is the gas phase inlet. The liquid phase entering from the top provides the entrainment power, so as to achieve the effect of crushing into ultra-fine bubbles, which can also be seen in the accompanying drawings. The bubble breaker has a conical structure, and the diameter of the upper part is larger than that of the lower part, so that the liquid phase can provide better entrainment power.
由于在先专利申请的初期，微界面发生器才刚研发出来，所以早期命名为微米气泡发生器(CN201610641119.6)、气泡破碎器(201710766435.0)等，随着不断技术改进，后期更名为微界面发生器，现在本发明中的微界面发生器相当于之前的微米气泡发生器、气泡破碎器等，只是名称不一样。Since the micro-interface generator was just developed in the early stage of the previous patent application, it was named as micro-bubble generator (CN201610641119.6), bubble breaker (201710766435.0), etc., and later changed its name to micro-interface generator with continuous technological improvement. The micro-interface generator in the present invention is equivalent to the previous micro-bubble generator, bubble breaker, etc., but the names are different.
综上所述，本发明的微界面发生器属于现有技术，虽然有的微界面发生器属于气动式微界面发生器类型，有的微界面发生器属于液动式微界面发生器类型，还有的属于气液联动式微界面发生器类型，但是类型之间的差别主要是根据具体工况的不同进行选择，另外关于微界面发生器与反应器、以及其他设备的连接，包括连接结构、连接位置，根据微界面发生器的结构而定，此不作限定。To sum up, the micro-interface generator of the present invention belongs to the prior art, although some micro-interface generators belong to the type of pneumatic micro-interface generators, some micro-interface generators belong to the type of hydraulic micro-interface generators, and some are of the type of hydraulic micro-interface generators. It belongs to the type of gas-liquid linkage micro-interface generator, but the difference between the types is mainly selected according to the specific working conditions. In addition, the connection between the micro-interface generator and the reactor and other equipment, including the connection structure, connection position, It depends on the structure of the micro-interface generator, which is not limited.
与现有技术相比，本发明的有益效果在于：Compared with the prior art, the beneficial effects of the present invention are:
(1)本发明的湿式氧化微界面***通过在氧化反应器内设置液体喷射器，一方面液体喷射器可将清洗氧化反应器的水高效破碎成微米级液滴，并通过喷射器冲撞氧化反应器上方取代人工进行清洗，此外还可将实际参与反应的原料 同样高效破碎成微米级液滴，从而达到提高反应传质的效果；(1) In the wet oxidation micro-interface system of the present invention, a liquid injector is arranged in the oxidation reactor. On the one hand, the liquid injector can efficiently break the water for cleaning the oxidation reactor into micron-sized droplets, and collide with the oxidation reaction through the injector. The upper part of the device replaces manual cleaning, and in addition, the raw materials actually participating in the reaction can also be efficiently broken into micron-sized droplets, so as to achieve the effect of improving the mass transfer of the reaction;
(2)本发明的湿式氧化微界面***可以实现将液体喷射器与微界面发生器进行协同合作，以使微界面发生器将空气破碎成微米尺度的微气泡，并将微气泡释放到内部，以增大反应过程中原料之间的相界传质面积，使得两相充分接触，提高液相中的溶解气体的浓度，提高效率，缩短反应时间。(2) The wet oxidation micro-interface system of the present invention can realize the cooperation between the liquid ejector and the micro-interface generator, so that the micro-interface generator can break the air into micro-bubbles of micron scale, and release the micro-bubbles into the interior, In order to increase the mass transfer area of the phase boundary between the raw materials in the reaction process, the two phases are fully contacted, the concentration of the dissolved gas in the liquid phase is increased, the efficiency is improved, and the reaction time is shortened.
附图说明Description of drawings
通过阅读下文优选实施方式的详细描述，各种其他的优点和益处对于本领域普通技术人员将变得清楚明了。附图仅用于示出优选实施方式的目的，而并不认为是对本发明的限制。而且在整个附图中，用相同的参考符号表示相同的部件。在附图中：Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are for the purpose of illustrating preferred embodiments only and are not to be considered limiting of the invention. Also, the same components are denoted by the same reference numerals throughout the drawings. In the attached image:
图1为本发明实施例提供的湿式氧化微界面***的结构示意图；1 is a schematic structural diagram of a wet oxidation micro-interface system provided by an embodiment of the present invention;
图2为本发明实施例提供的湿式氧化微界面***的网面的结构示意图。FIG. 2 is a schematic structural diagram of a mesh surface of a wet oxidation micro-interface system according to an embodiment of the present invention.
附图说明：Description of drawings:
10-氧化反应器；                     101-进液口；10-oxidation reactor; 101-liquid inlet;
102-出液口；                        103-液体喷射器；102-liquid outlet; 103-liquid ejector;
1031-喷射口；                       1032-网面；1031-jet port; 1032-mesh surface;
104-搅拌桨；                        105-微界面发生器；104-stirring paddle; 105-micro interface generator;
106-进气口；                        20-空压装置；106-air inlet; 20-air compressor;
30-废水换热器；                     301-物料进口；30-wastewater heat exchanger; 301-material import;
302-物料出口；                      303-热源进口；302-material export; 303-heat source import;
304-热源出口；                      40-废水加热器。304-heat source outlet; 40-wastewater heater.
具体实施方式Detailed ways
下面将结合附图和具体实施方式对本发明的技术方案进行清楚、完整地描述，但是本领域技术人员将会理解，下列所描述的实施例是本发明一部分实施例，而不是全部的实施例，仅用于说明本发明，而不应视为限制本发明的范围。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。实施例中未注明具体条件者，按照常规条件或制造商建议的条件进行。所用试剂或仪器未注明生产厂商者，均为可以通过市售购买获得的常规产品。The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments, but those skilled in the art will understand that the embodiments described below are part of the embodiments of the present invention, rather than all of the embodiments, It is only used to illustrate the present invention and should not be construed as limiting the scope of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. If the specific conditions are not indicated in the examples, it is carried out according to the conventional conditions or the conditions suggested by the manufacturer. The reagents or instruments used without the manufacturer's indication are conventional products that can be purchased from the market.
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation or a specific orientation. construction and operation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first", "second", and "third" are used for descriptive purposes only and should not be construed to indicate or imply relative importance.
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。In the description of the present invention, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, unless otherwise expressly specified and limited, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.
为了更加清晰的对本发明中的技术方案进行阐述，下面以具体实施例的形式进行说明。In order to illustrate the technical solutions of the present invention more clearly, the following descriptions are given in the form of specific embodiments.
实施例Example
参阅图1所示，为本发明实施例的湿式氧化微界面***，其主要包括废水换热器30、废水加热器40、氧化反应器10；废水换热器30上设置有物料进口301、物料出口302、热源进口303以及热源出口304；所述氧化反应器出来的 氧化水从所述热源进口303进入所述废水换热器30中，所述物料出口302连接所述废水加热器40；氧化反应器10内设置有液体喷射器103以及微界面发生器105，微界面发生器105正好设置在液体喷射器103的正下方，氧化反应器10的侧壁设置有进液口101，还设置有用于进入压缩空气的两个进气口106，液体喷射器103与进液口101通过管道连接，液体喷射器103的底部位平面，顶面呈半圆形弧面，所述半圆形弧面上依次排布有若干个喷射口1031，所述喷射口1031的喷射方向朝向氧化反应器10顶部，进液口101通过管道与液体喷射器103的底部连接，最优是通过与液体喷射器103的底部中心连接，通过将进入液体喷射器103的液体破碎为直径为微米级的微液滴，从表面凸起的喷射口1031喷出，以冲撞氧化反应器顶部进行高效的清洗。为了提高喷射效果，喷射口1031内铺设有均布多个微孔的网面1032，网面1032的个数不限，目的是为了使液体呈雾状喷射出去，提高传质效果，网面1032的结构具体参见图2。Referring to FIG. 1, it is a wet oxidation micro-interface system according to an embodiment of the present invention, which mainly includes a waste water heat exchanger 30, a waste water heater 40, and an oxidation reactor 10; the waste water heat exchanger 30 is provided with a material inlet 301, a material outlet 302, heat source inlet 303 and heat source outlet 304; the oxidized water from the oxidation reactor enters the waste water heat exchanger 30 from the heat source inlet 303, and the material outlet 302 is connected to the waste water heater 40; oxidation The reactor 10 is provided with a liquid injector 103 and a micro-interface generator 105. The micro-interface generator 105 is arranged just below the liquid injector 103. The side wall of the oxidation reactor 10 is provided with a liquid inlet 101, which is also provided with useful For the two air inlets 106 entering the compressed air, the liquid injector 103 and the liquid inlet 101 are connected by pipes, the bottom of the liquid injector 103 is flat, and the top surface is a semicircular arc surface. A number of injection ports 1031 are arranged in sequence on the upper surface, the injection direction of the injection ports 1031 is toward the top of the oxidation reactor 10, and the liquid inlet 101 is connected to the bottom of the liquid injector 103 through a pipeline, preferably by connecting with the liquid injector 103. The bottom center is connected to the liquid injector 103, and the liquid entering the liquid ejector 103 is broken into micro-droplets with a diameter of micrometers, and ejected from the ejection port 1031 raised on the surface to collide with the top of the oxidation reactor for efficient cleaning. In order to improve the spray effect, a mesh surface 1032 with a plurality of micropores evenly distributed in the spray port 1031 is laid. The number of mesh surfaces 1032 is not limited. See Figure 2 for details.
微界面发生器的个数为两个，由上至下依次排列，两个进气口106均连接有空压装置20，并且每个进气口106通过管道与相对应的微界面发生器连接。The number of micro-interface generators is two, which are arranged in order from top to bottom. The two air inlets 106 are connected to the air compressor 20, and each air inlet 106 is connected to the corresponding micro-interface generator through a pipeline. .
氧化反应器10的底部设置有出液口102，用于将堆积在氧化反应器10底部的物料出料。氧化反应器10的底部两侧平整，中心位置向上凸起呈平面，在氧化反应器10底部的两侧平整位置分别设置有所述出液口102，出液口102用于排出废液，氧化反应器10内底部中心凸起平面设置有搅拌桨104以起到加速排料的作用，叶片的方向朝上，以用于氧化反应器10底部冲洗与排液时的搅拌，转速可以无级调节。优选地搅拌桨的个数为两个，并排设置在氧化反应器10底部凸起平面处。The bottom of the oxidation reactor 10 is provided with a liquid outlet 102 for discharging the materials accumulated at the bottom of the oxidation reactor 10 . Both sides of the bottom of the oxidation reactor 10 are flat, and the center position is raised upward to form a plane. The liquid outlets 102 are respectively provided at the flat positions on both sides of the bottom of the oxidation reactor 10. The liquid outlets 102 are used to discharge waste liquid, oxidize A stirring paddle 104 is provided on the central raised plane at the bottom of the reactor 10 to accelerate the discharge, and the direction of the blade is upward for stirring at the bottom of the oxidation reactor 10 for flushing and draining, and the rotational speed can be adjusted steplessly. . Preferably, there are two stirring paddles, which are arranged side by side at the protruding plane at the bottom of the oxidation reactor 10 .
为了配合提高传质效果，在氧化反应器10侧壁设置的进液口101为两个，其中一个所述进液口101与所述液体喷射器103通过管道连接，另一个进液口101设置在靠近所述氧化反应器10底部的位置。这样对于氧化反应器10内部的各个位置都能实现有效的进液。In order to improve the mass transfer effect, there are two liquid inlets 101 provided on the side wall of the oxidation reactor 10 , one of the liquid inlets 101 is connected with the liquid injector 103 through a pipeline, and the other liquid inlet 101 is provided near the bottom of the oxidation reactor 10. In this way, efficient liquid feed can be achieved for various positions inside the oxidation reactor 10 .
该实施例还包括PLC(或DCS，PLC和DCS)控制***：与氧化反应器10 的传感器相连，用于智能化控制工艺操作与参数，实现了对生产进行远程控制，符合生产的智能化。This embodiment also includes a PLC (or DCS, PLC and DCS) control system: connected to the sensor of the oxidation reactor 10, for intelligently controlling process operations and parameters, realizing remote control of production, in line with production intelligence.
本发明实施例的湿式氧化微界面***的工作过程如下：The working process of the wet oxidation micro-interface system of the embodiment of the present invention is as follows:
(1)清洗：在氧化反应器10上方的清洗水通过进液口101输送到液体喷射器103内部并通过弧面上的喷射口1031将水喷淋出来，经网面1032高效破碎成微米级(1μm≤d<1mm)液滴后从液体喷射器103表面凸起的喷射口1031喷出，冲撞氧化反应器10的顶部并对上方进行清洗。清洗后的液滴在罐底形成液位，当液位上升到氧化反应器10中部时，关闭上方输水阀门，打开底部的搅拌桨104到200rpm。由于搅拌桨104叶片的安装方向向下，会将叶片上方的液体抽往下方两侧，并在搅拌桨104两侧形成漩涡，对氧化反应器10下部两侧进行冲刷清洗。同时打开下方的水路，输入的水流在搅拌桨104的作用下对氧化反应器侧壁进行清洗，冲刷30min后关闭输水阀门，调小转速到100rpm/min，并通过氧化反应器10下端两侧的出液口102将水排出，关闭出液口102，调小转速到50rpm/min。(1) Cleaning: The cleaning water above the oxidation reactor 10 is transported to the inside of the liquid ejector 103 through the liquid inlet 101 and sprayed out through the jetting port 1031 on the arc surface, and is efficiently broken into micron-level through the mesh surface 1032 (1 μm≦d<1 mm) droplets are ejected from the protruding ejection port 1031 on the surface of the liquid ejector 103 , collide with the top of the oxidation reactor 10 and clean the top. The cleaned droplets form a liquid level at the bottom of the tank. When the liquid level rises to the middle of the oxidation reactor 10, close the upper water delivery valve and open the bottom stirring paddle 104 to 200 rpm. Since the installation direction of the blades of the stirring paddle 104 is downward, the liquid above the blades will be pumped to the two sides below, and vortices will be formed on both sides of the stirring paddle 104 to wash and clean both sides of the lower part of the oxidation reactor 10 . At the same time, the lower water circuit is opened, and the input water flow cleans the side wall of the oxidation reactor under the action of the stirring paddle 104. After 30 minutes of flushing, the water delivery valve is closed. The liquid outlet 102 of the device discharges water, closes the liquid outlet 102, and adjusts the speed to 50rpm/min.
(2)工作：废水经过输送泵从物料进口301送入到废水换热器30中进行换热，从物料出口302出去再经过废水加热器40进行进一步的加热，加热后的废水进入到氧化反应器中进行氧化处理，经过空压装置20压缩后的压缩空气或压缩氧气从氧化反应器的侧壁进气口106通入，先经过微界面发生器105处理后再进行氧化反应，以提高相界面的传质效率，氧化反应器的顶部设置有放空口，氧化反应器处理后的净水从热源进口303进入废水换热器30中与待处理的废水换热后，从热源出口304出去进行回用。(2) Work: the waste water is sent into the waste water heat exchanger 30 from the material inlet 301 through the conveying pump for heat exchange, and then goes out from the material outlet 302 and then passes through the waste water heater 40 for further heating, and the heated waste water enters the oxidation reaction. The oxidation treatment is carried out in the reactor, and the compressed air or compressed oxygen compressed by the air compressor 20 is introduced from the air inlet 106 of the side wall of the oxidation reactor, and is first processed by the micro-interface generator 105 before the oxidation reaction is carried out to improve the phase. The mass transfer efficiency of the interface, the top of the oxidation reactor is provided with a vent, the purified water treated by the oxidation reactor enters the waste water heat exchanger 30 from the heat source inlet 303 and exchanges heat with the waste water to be treated, and then goes out from the heat source outlet 304. Reuse.
上述湿式氧化微界面***工作过程中的操作以及工艺参数完全由PLC(或DCS，PLC和DCS)的控制***控制，控制***与氧化反应器10上各传感器相连接，实现自动化智能化控制，节约人力成本。The operation and process parameters in the working process of the above-mentioned wet oxidation micro-interface system are completely controlled by the control system of PLC (or DCS, PLC and DCS). Labor costs.
氧化反应器10的反应温度为200-220℃，反应压力2-3MPa。The reaction temperature of the oxidation reactor 10 is 200-220° C., and the reaction pressure is 2-3 MPa.
在上述实施例中，泵体的个数并没有具体要求，可根据需要在相应的位置设置。In the above embodiment, there is no specific requirement for the number of pump bodies, which can be set at corresponding positions as required.
总之，本发明的方案通过液体喷射器与微界面发生器的协同配合，不仅实现了对液相的分散破碎，也实现了对气相的分散破碎，这样通过将各个相态的物质均破碎成微米颗粒，从而更能提高体系的传质效果。In a word, the solution of the present invention realizes not only the dispersion and crushing of the liquid phase, but also the dispersion and crushing of the gas phase through the cooperation of the liquid ejector and the micro-interface generator. particles, so as to improve the mass transfer effect of the system.
本发明的湿式氧化微界面***处理能力高，保证在能耗比较低的条件下具有较高的湿式氧化处理效果，有害物、COD去除率可达99％，而且清洗方便，省去了人工操作。The wet oxidation micro-interface system of the invention has high processing capacity, ensures high wet oxidation treatment effect under the condition of relatively low energy consumption, the removal rate of harmful substances and COD can reach 99%, and the cleaning is convenient, eliminating the need for manual operation .
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, but not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present invention. scope.

Claims (7)

  1. 一种湿式氧化微界面***，其特征在于，包括：废水换热器、废水加热器、氧化反应器，所述废水换热器上设置有物料进口、物料出口、热源进口以及热源出口；所述氧化反应器出来的氧化水从所述热源进口进入所述废水换热器中，所述物料出口连接所述废水加热器；A wet oxidation micro-interface system is characterized in that it includes: a waste water heat exchanger, a waste water heater, and an oxidation reactor, and the waste water heat exchanger is provided with a material inlet, a material outlet, a heat source inlet and a heat source outlet; the The oxidized water from the oxidation reactor enters the waste water heat exchanger from the heat source inlet, and the material outlet is connected to the waste water heater;
    所述氧化反应器的底面中间区域向上凸起呈平面，在所述氧化反应器底面凸起平面的两侧平整部分别设置有出液口，所述氧化反应器的侧壁上设置有进液口；所述氧化反应器内上部设置有液体喷射器，所述液体喷射器的底部为平面，顶部呈半圆形弧面，所述半圆形弧面上依次排布有若干个喷射口，所述喷射口的喷射方向朝向氧化反应器的顶部，所述进液口通过管道与所述液体喷射器的底部连接。The middle area of the bottom surface of the oxidation reactor protrudes upward to form a plane, the flat parts on both sides of the convex plane of the bottom surface of the oxidation reactor are respectively provided with liquid outlets, and the side wall of the oxidation reactor is provided with a liquid inlet A liquid injector is arranged in the upper part of the oxidation reactor, the bottom of the liquid injector is a plane, and the top is a semicircular arc surface, and several injection ports are arranged in sequence on the semicircular arc surface, The injection direction of the injection port is toward the top of the oxidation reactor, and the liquid inlet is connected with the bottom of the liquid injector through a pipeline.
  2. 根据权利要求1所述的湿式氧化微界面***，其特征在于，所述氧化反应器内设置有微界面发生器，所述微界面发生器设置在所述液体喷射器的正下方。The wet oxidation micro-interface system according to claim 1, wherein a micro-interface generator is arranged in the oxidation reactor, and the micro-interface generator is arranged directly below the liquid ejector.
  3. 根据权利要求2所述的湿式氧化微界面***，其特征在于，所述微界面发生器的个数为两个，由上到下依次排列。The wet oxidation micro-interface system according to claim 2, wherein the number of the micro-interface generators is two, which are arranged in order from top to bottom.
  4. 根据权利要求3所述的湿式氧化微界面***，其特征在于，在所述氧化反应器的侧壁上设置有用于进入压缩空气的两个进气口，两个所述进气口连接有空压装置，每个所述进气口通过管道与相对应的微界面发生器连接。The wet oxidation micro-interface system according to claim 3, wherein two air inlets for entering compressed air are provided on the side wall of the oxidation reactor, and the two air inlets are connected with an air inlet. Each of the air inlets is connected with the corresponding micro-interface generator through a pipeline.
  5. 根据权利要求1所述的湿式氧化微界面***，其特征在于，所述氧化反应器内底部向上凸起处设置有搅拌桨以起到加速排料的作用。The wet oxidation micro-interface system according to claim 1, characterized in that, a stirring paddle is provided at the upwardly protruding part of the inner bottom of the oxidation reactor to accelerate the discharge.
  6. 根据权利要求5所述的湿式氧化微界面***，其特征在于，所述搅拌桨的数量为两个，并排设置在所述氧化反应器底部凸起平面处。The wet oxidation micro-interface system according to claim 5, wherein the number of the stirring paddles is two, which are arranged side by side at the protruding plane at the bottom of the oxidation reactor.
  7. 根据权利要求1-6任一项所述的湿式氧化微界面***，其特征在于，所述进液口为两个，其中一个所述进液口与所述液体喷射器通过管道连接，另一个所述进液口设置在靠近所述氧化反应器底部的位置。The wet oxidation micro-interface system according to any one of claims 1-6, characterized in that, there are two liquid inlets, one of which is connected to the liquid injector through a pipeline, and the other is The liquid inlet is arranged near the bottom of the oxidation reactor.
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