CN108191194A - A kind of sludge of sewage treatment plant plasma processing method - Google Patents

Abstract

A kind of sludge of sewage treatment plant plasma processing method, includes at least：Sludge is handled using plasma smelting furnace to decompose harmful substance to generate synthetic gas and sludge silt；Synthetic gas converts water to high-temperature water vapor by heat exchanger；Carbon containing raw material is blended in sludge silt and forms mixture paste, carries out heating concentration to mixture paste using high-temperature water vapor and then carry out carbonization to the slurry of concentration by incomplete oxidation stove to form sludge carbon.Effective decomposition is carried out to the harmful substance in sludge, and sludge silt is reasonably utilized using system provided by the invention.

Description

A kind of sludge of sewage treatment plant plasma processing method

Technical field

The present invention relates to a kind of sludge of sewage treatment plant plasma processing methods, belong to technical field of sludge treatment.

Background technology

The sewage sludge generated in sewage treatment plant's sewage disposal process mainly includes Sludge from primary sedimentation tank and biological treatment structure Build the excess sludge generated in object.Moisture percentage in sewage sludge is high, volume is big, and a large amount of land resource is not only occupied in disposal process, And easily occur to reveal in transport process and pollute environment；Simultaneously anaerobism ring is encountered containing a large amount of organic substance in sludge Corruption can occur for border, and generate the bad smells such as hydrogen sulfide, methyl-sulfuric acid, in addition to this, also containing pathogen, parasite in sludge And degradation material is difficult to, and serious threat the safety of the mankind and ecological environment, if sludge cannot get scientific and reasonable processing, Easily cause secondary pollution.

Invention content

To overcome technical problem in the prior art, it is dirty that goal of the invention of the invention is to provide a kind of sewage treatment plant Mud plasma processing method has carried out the harmful substance in sludge effective decomposition, and sludge silt is converted into sludge carbon.

To realize the goal of the invention, the present invention provides a kind of sludge of sewage treatment plant plasma processing method, feature It is, includes at least：

Sludge is handled using plasma smelting furnace to decompose harmful substance to generate synthetic gas and sludge silt；It closes High-temperature water vapor is converted water to by heat exchanger into gas；

Carbon containing raw material is blended in sludge silt and forms mixture paste, mixture paste is heated using high-temperature water vapor Concentration then carries out the slurry of concentration by incomplete oxidation stove carbonization and forms sludge carbon.

Preferably, alternately sludge silt and carbon raw material are mixed using two rotating disk contactors.

Compared with prior art, sludge of sewage treatment plant plasma handling system provided by the invention, to having in sludge Evil substance has carried out effective decomposition, and sludge silt is converted into sludge carbon.

Description of the drawings

Fig. 1 is the sludge of sewage treatment plant plasma handling system composition frame chart that example of the present invention provides；

Fig. 2 is the composition schematic diagram of sludge plasma subsystem provided by the invention；

Fig. 3 is the circuit diagram of ARC power supplys provided by the invention；

Fig. 4 is the circuit diagram of AC power supplies provided by the invention；

Fig. 5 is the composition schematic diagram of heat exchanger provided by the invention；

Fig. 6 is the composition schematic diagram of condenser provided by the invention.

Specific embodiment

The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached The embodiment of figure description is exemplary, and illustrated embodiment is only used for explaining the present invention, and cannot be construed to the limit to the present invention System.

Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one It is a ", " described " and "the" may also comprise plural form.It is to be further understood that is used in the specification of the present invention arranges Diction " comprising " refers to there are the feature, integer, step, operation, element and/or component, but it is not excluded that presence or addition Other one or more features, integer, step, operation, element, component and/or combination thereof.It should be understood that when we claim When element is "connected" to another element, it can be directly connected to other elements or there may also be intermediary elements.Here The wording "and/or" used includes the whole of one or more associated list items or any cell is combined with whole.

Those skilled in the art of the present technique are appreciated that all terms used herein are (academic including technical term and section Language), there is the meaning identical with the general understanding of the those of ordinary skill in fields of the present invention.It should also be understood that Term used in present specification, it should be understood that there is the meaning consistent with the prior art, unless in present specification quilt Otherwise specific definitions will not be explained with the meaning of extramalization.

Fig. 1 be sludge of sewage treatment plant that example of the present invention provides etc. from processing system composition frame chart, as shown in Figure 1, according to This hair invents an embodiment, sludge of sewage treatment plant etc. and includes at least feed arrangement 200, sludge plasma subsystem from processing system System 100 and filter device 600, wherein, the feed arrangement 200 is used to convey sludge to sludge plasma subsystem 100；Sludge Plasma subsystem 100 is used to that the harmful substance in sludge to be gasified and/or be melted to be converted into synthesis gas with part harmful substance Body and/or slag；The filter device 600 is used to that the gas discharged from sludge plasma subsystem 100 to be filtered to go Except clean gas either sour gas and is discharged into aerial or recycled by dust.

According to one embodiment of the invention, sludge of sewage treatment plant plasma handling system further includes plenum chamber 300a, uses In the synthetic gas that collection is exported from sludge plasma subsystem 100, temperature sensor and gas are provided in plenum chamber Content level sensor, wherein, temperature sensor is used to detect the temperature of the synthetic gas in plenum chamber 300a, and temperature information is passed Give controller.The gas content sensor is used to detect the content of the gas of the various compositions in plenum chamber 300a, if closing Also contain toxic gas into gas, then synthetic gas is imported into the plasma melting of sludge plasma subsystem again by pipeline In stove, to be decomposed again to toxic gas.It may include recycling air pump, the devices such as check valve, control valve, by plenum chamber in pipeline In gas be introduced back into smelting furnace.

Heat exchanger 400a is further included from processing system according to one embodiment of the invention, sludge of sewage treatment plant etc., from collection The hot synthesis gas that gas tank 300 exports carries out heat exchange in a heat exchanger with the water inputted from water tank 880a, will synthesize The temperature of gas reduces, and is collected simultaneously the heat entrained by synthesis gas and is converted to high temperature steaming with the water that will enter into heat exchanger Vapour.In the present invention, industry water can be added in water tank 880a, medicament is filled in industry water to prevent water or be generated by water Water vapour to steam turbine and corrosion of piping.Because the gas temperature that plenum chamber is collected is higher, up to 1000 DEG C or more, by synthesis gas Thermal energy entrained by body will form high-temperature water vapor by heat exchanger from the water of water tank 880a.

Secondary reactor is further included from processing system according to one embodiment of the invention, sludge of sewage treatment plant etc., it is secondary Reactor is used to be converted into arrange by the synthetic gas secondary response discharged in sludge plasma subsystem 100 or heat exchanger Deflation body, secondary reactor 500, which can be made of and is lined with mild steel, is properly isolated from/refractory material, is injected in secondary reactor Oxidant so that synthesis gas is further adjusted, such as make any unreacted carbon and oxidant reaction and formed carbon monoxide or Make volatile metal components and oxidant reaction and form metal oxide or injected in secondary reactor a large amount of empty Gas so that synthesis gas be convertible into can discharge gas, can discharge gas include nitrogen, oxygen, carbon dioxide and/or vapor.

Plenum chamber 300b is further included from processing system according to one embodiment of the invention, sludge of sewage treatment plant etc., is used for The synthetic gas exported from secondary reactor 500 is collected, temperature sensor and gas content sensing are provided in plenum chamber Device, wherein, temperature sensor is used to detect the temperature of the synthetic gas in plenum chamber 300b, and sends temperature information to control Device.The gas content sensor is used to detect the content of the gas of the various compositions in plenum chamber 300b, if in synthetic gas Also contain unreacted carbon, then synthetic gas is imported into again by pipeline and waited in secondary reactors 500, with to containing unreacted Carbon re-oxidation.It may include recycling air pump, the devices such as check valve, control valve, by the gas in plenum chamber 300b in pipeline Body is introduced back into secondary reactor 500.

Heat exchanger 400b is further included from processing system according to one embodiment of the invention, sludge of sewage treatment plant etc., from collection The hot synthesis gas of gas tank 300b outputs carries out heat exchange with the water inputted from water tank 880a in heat exchanger 400b, with right The temperature of gas reduce or prevent unexpected complicated molecule in conjunction with or prevent noval chemical compound（Such as furans）Formation, together When the water that will enter into heat exchanger 400b be converted to high-temperature steam.

The downstream of secondary reactor 300 is filter device 600, and the present invention uses washing filter to go in heat exchanger The particle and/or sour gas of the gas entrained with of discharge with formed reach discharge standard can discharge gas.

Power generation sub-system 700 is further included from processing system according to one embodiment of the invention, sludge of sewage treatment plant etc., is generated electricity Subsystem includes steam turbine, generator and power circuit, wherein, steam turbine generates kinetic energy with pushing generator using high-temperature steam It produces electricl energy, the electric energy that generator generates is converted to the direct current and/or alternating current used in system by power circuit.For giving vapour Turbine provides the high-temperature steam of kinetic energy not merely with high-temperature steam caused by this system, also utilizes all available heat of factory Source and the high-temperature steam generated.Power circuit respectively to etc. in vitro smelting furnace upper and lower part plasma arc electrode apply direct current Pressure and/or alternating voltage.

Condenser 850a is further included from processing system according to one embodiment of the invention, sludge of sewage treatment plant etc., high temperature steams Vapour carries out heat exchange heating up tap water so that daily life is utilized with tap water within the condenser, the condensed device of high-temperature steam Water is condensed into, which can be discharged into water tank 880a, with to reusing.

Illustrate the composition of sludge plasma subsystem of the present invention with reference to Fig. 2, illustrate with reference to Fig. 3 provided by the invention ARC power circuits；It is AC power supplies circuit provided by the invention with reference to Fig. 4.Illustrate heat exchanger provided by the invention with reference to Fig. 5 Composition illustrates the composition of condenser provided by the invention with reference to Fig. 6.

Fig. 2 illustrates the schematic diagram of sludge plasma subsystem provided by the invention, as shown in Fig. 2, according to one of the invention Embodiment, sludge plasma subsystem 100 include plasma furnace, are used to that sludge to be handled in sludge will to divide The composition of solution is decomposed, and the plasma furnace includes the columnar housing for prolonging left and right directions extension, along the axis of cylinder Direction on the lower side is provided with axis 103, is provided with spiral shape paddle 102 on axis, the lower section in cylinder is provided with public electrode, Top in cylinder is staggeredly equipped with the daughters electrode such as multiple exchanges of pectination, and such as 105, and be provided with multiple direct-current plasmas Electrode, such as 109.The side wall of the container of plasma smelting furnace is provided with feed inlet, and the feed inlet connects feed arrangement, is filled by charging Feed is put, telescopic isolating door is provided between the discharge gate of the feed arrangement and the feed inlet of container, when needing charging, Control system makes motor work so that isolating door to be driven to open, if you do not need to during charging, control system drives motor work Isolating door closes feed inlet.According to one embodiment of the invention, the feed arrangement includes feed hopper 104.

Exhaust outlet 106 is additionally provided on the container of plasma smelting furnace, is opened and closed by electrically-controlled valve.Plenum chamber An air inlet of 300a is communicated in the exhaust outlet 106 of container, an exhaust outlet of the exhaust outlet through control valve of plenum chamber 300a It is communicated in gas-guide tube, another exhaust outlet of the exhaust outlet of plenum chamber 300a also through control valve is communicated in gas-guide tube and is connected to hot friendship Parallel operation 400a.Gas content sensor can be set in plenum chamber 300a（Do not show in figure）, for detecting the gas in plenum chamber 300a Body composition；The gas ingredients in gas analyzer measurement plenum chamber 300a also can be used.The gas of the container discharge of plasma smelting furnace Body is first stored in plenum chamber 300a, using the gas ingredients in gas analyzer analysis plenum chamber 300a, when in plenum chamber 300a Pernicious gas content it is exceeded when, control system control control valve makes the exhaust outlet of plenum chamber 300a and plasma smelting furnace Reservoir makes gas again pass by decomposition；When the content of the pernicious gas in plenum chamber 300a is less than setting value, control system System control control valve, is made the exhaust outlet of plenum chamber be connected with the inlet end of heat exchanger 400a, is carried out using waste heat and industry water Heat exchange.

The container of plasma smelting furnace includes high heat-resisting resistant to corrosion layer, insulating layer, insulating layer and flame retardant coating successively from outside to inside. It, can also be by mild steel and by resistance to if the inner wall of container can be formed by dried layer refractory composition according to one embodiment Isolation inner wall is made made of fiery material layer, which may include that diamond dust or graphite brick, the hydraulicity pour fire proofed wood Material, ceramic wafer, ceramic coating, close pressing plate and/or high heat-resisting resistant to corrosion Pyrex block.The inner wall of the container of plasma smelting furnace Design it is contemplated that how operating flexibility, how to minimize heating time, allow natural cooling and/or do not causing to hold In the case of the hot-face insulation portion of device and/or the damage of other parts, it should adapt to continually heat and cool down daily.

It can be with set temperature sensor and/or pressure sensor with to the temperature in container in the container of plasma smelting furnace And/or pressure is continuously or substantially continuously monitored to ensure the negative pressure in container within preset range.It can be by holding One or more monitoring mouths are set on wall, so that the probe of temperature sensor and/or pressure sensor is stretched into container, with inspection Testing temperature and/or pressure, temperature sensor and/or pressure sensor can be connected with control system with the temperature information that will be detected Control system is sent to pressure information, and control system controls the working condition of other components according to the data that it is measured, described The output voltage of other components such as electrode assembly operating mechanism, direct voltage source.

When the inorganic wastes in sludge are provided be given to container when, inorganic wastes vitreous or molten can be made by heating unit Change, when debirs are provided be given to container when, debirs can be made to gasify by heating unit.Heating unit is can be by electric energy It is converted to the device of thermal energy.Heating unit include by ARC power supplys 111 provide electric energy direct current plasma electrode 109a, 199b and 109c etc. and AC plasma electrode 106a, 106b and 106c that electric energy is provided by AC power supplies 110, the plasma electrode It is installed in container and controllable argon-arc plasma field can be generated inside container.When substantially steady with being formed between high current electrode During fixed air-flow, plasma electrode can generate controllable argon-arc plasma field.Heating unit can generate the plasma energy of setting value.

According to one embodiment of the invention, heating unit further includes ground electrode 110, in the lower part for being arranged on container.

The electric energy being supplied to by control on direct current plasma electrode and AC plasma electrode, can be to the arc between electrode Voltage is controlled, so as to adjust the internal temperature of container.The electric energy of electrode is supplied to according to arc voltage design.

It is discharged from the sludge through plasma furnace process by slag notch 107, it is controlled to open or close by control valve 108 It closes.Control valve 108 is made of heat safe material.

Due to the low-oxygen environment in container, some metal oxides being present in waste stream can be reduced into its element shape Formula.The metal and metal alloy being present in waste material can also melt in a reservoir, and molten metal can pass through together with molten slag Slag notch is discharged, and is handled.

The sludge received in container can undergo molecular dissociation and pyrolytic process.Pyrolysis is such process：With incinerating or firing Burning is compared, and the heat-flash run in extreme low-oxygen environment makes molecular dissociation by the process.During this process, sludge can pass through Heating devices heat.The debirs of heating can be handled, until it is dissociated into its elemental composition, such as (carbon is micro- for solid carbon Grain) and hydrogen.If exist in the form of the derivative of hydrocarbon in sludge, oxygen, nitrogen and halogen (such as chlorine) It can be released.After pyrolysis and/or partial oxidation, generated gas (for example, synthesis gas) may include carbon monoxide, hydrogen, Carbon dioxide, vapor, methane and/or nitrogen.

The oxygen and chlorine of dissociation can freely be reacted with generated carbon and hydrogen, and can be re-formed various complicated and possible Harmful organic compound.However, these compounds are formed at a high temperature of generally can not being kept in container, at high temperature, only The simple compounds of limited quantity can be stable.When there are when chlorine or other halogens, most stable of compound is an oxidation Carbon, nitrogen, hydrogen and hydrogen chloride gas.

The amount of oxygen present in sludge may be not enough to carbon conversions all present in waste material into CO gas.It is dirty The hot environment that moisture present in mud can be reacted from container by " steam conversion " absorbs energy and forms carbon monoxide And hydrogen.Such as the oxygen or moisture of Shortcomings amount in puree mudflow, then unreacted carbon particulate can be entrained in the gas flow and from It is set out in container 101.Therefore, it is necessary to be handled again in secondary reactor.

The synthesis gas generated in container is heated at least about 1000 DEG C, in the synthetic gas comprising be not decomposed into Part, therefore, according to one embodiment of the invention, plasma smelting furnace further includes cycle subsystem, is arranged from the exhaust outlet 106 of container The gas gone out imports container again, to be decomposed again.

According to one embodiment of the invention, at least provided with temperature sensor in plasma container, control system according to The information that temperature sensor provides controls the electric energy applied to plasma electrode, so as to the temperature in control container.

According to one embodiment, sludge plasma subsystem provided by the invention includes：Conveyer 803, belt claim to feed Device 805, premixed device 808, the first rotating disc type hybrid heater 809 and the first aggregate bin 812, wherein, through plasma furnace process Sludge silt be transported to conveyer 803, conveyer 803 claims sludge supply belt to feeder 805, belt under the action of motor Feeder 805 is claimed to imported into premixed device 801 to the sludge of set amount.Conveyer includes cylindrical housing, be provided on shell into Material mouth 112 and discharge port 116.There is an axis 115 the center of enclosure cavity is axially disposed, equipment has helical blade 114 on axis, The axis 115 is driven by motor 113, and motor driving shaft rotation, blade thereon rubs the sludge imported in it.By set amount Slurries or powder of the weight percent into about 50% to 70% of carbon raw material be also added to premixed device 801, sludge and contain Carbon raw material mixes in the premixed device of 70 °C to 100 °C of temperature, and after through motor-operated control valve imported into the mixing of the first rotating disc type plus It is mixed in hot device 804.The housing of premixed device 801 is also double-layer structure, and outer layer is provided with air inlet, is set in air inlet opposite side Exhaust outlet is equipped with, air inlet is used to import high-temperature steam to heat the sludge in housing.When premixed device 801 mixes About 10 minutes long, temperature range is at 70 °C to 100 °C.

First rotating disc type hybrid heater 804 includes cylindrical shell, and the housing is double-layer structure, and inside forms cylinder Shape cavity.Cylindrical shell center it is axially disposed have hollow axis, hollow spiral shape disk is provided on the axis, There is spiral shape cavity in spiral shape disk；High-temperature steam imported into the cavity and spiral shell of the cavity of cylinder double-layer structure formation, axis It is heated in rotation shape cavity with the material to the first rotating disc type hybrid heater.The heating temperature is 72 °C to 100 °C, former The percentage that the total weight of solid content and carbon raw material in sludge accounts for slurries is 40% to 55%.In a rotating disc type Hybrid Heating In 804 in device, contained transpirable partial elements are evaporated from sludge and can be arranged from first turn in part moisture content and sludge It is discharged in disk mixer 804.

The mixture of sludge and carbon raw material is discharged by motor-operated control valve in the first aggregate bin 812, is then passed through Transport system is sent in incomplete oxidation stove and is carbonized to mixture.

According to one embodiment of the invention, Treatment of Sludge subsystem further includes the second rotating disc type hybrid heater 809, second Aggregate bin 813 and third aggregate bin 818, the mixture discharged from the first rotating disk contactor 804 is through control valve 807, electronic Either motor-operated control valve 809 is directed to the first aggregate bin 812 or the hollow aggregate bin of the second aggregate bin 813 to control valve 808 In.

After second aggregate bin 812 or third aggregate bin 813 are filled, the mixture in aggregate bin being filled passes through electricity Dynamic control valve 814 or 815 is directed in the second rotating disc type hybrid heater 806, and the second rotating disc type hybrid heater 806 is in temperature It is that mixture is heated under 100 °C to 108 °C to spend, and transpirable composition and moisture content in mixture is made further to evaporate, and Condenser is discharged to from the second rotating disk contactor 806, is condensed.Into one in the second rotating disc type hybrid heater 806 The slurries of step concentration are discharged into the aggregate bin emptied in aggregate bin 812 and 813 by motor-operated control valve 810 and 811 respectively, Slurry is drained into aggregate bin 818 by aggregate bin 812 or 813 by motor-operated control valve 816 or 817 respectively, then passes through conveying System is sent in incomplete oxidation stove and is carbonized to mixture.The structure of second rotating disc type hybrid heater 806 with first turn The structure of disc type heating mixer 804 is identical, no longer repeats here.

In the present invention, in order to be heated to sludge and mixture, the conjunction gone out from plasma melting fire grate can be directly utilized Into gas be importing directly into premixed device 801, the first rotating disc type hybrid heater 804 and the second rotating disc type hybrid heater 806 with Sludge and/or mixture are heated, the high-temperature steam of heat exchanger output can also be used to be heated.

Fig. 3 is the circuit diagram of ARC power supplys provided by the invention, as shown in figure 3, according to one embodiment, the present invention provides ARC power supplys include transformer, power regulating eqiupment and rectification circuit, wherein, there are one primary coil N0 and N number of for the time variant voltage utensil Secondary coil, such as N1, N2, N3, N is the integer more than or equal to 3.

Power regulating eqiupment circuit includes N roads, as the first via includes silicon-controlled D1, silicon-controlled D2, high frequency choke coil L10, capacitance C1 With resistance R1, wherein the first of the cathode of silicon-controlled D1, the anode of silicon-controlled D2, the first end of high frequency choke coil L10, capacitance C1 End is connected to first node, the anode of silicon-controlled D1, the cathode of silicon-controlled D2, the second end of high frequency choke coil L10, resistance R1 Second end is connected to second node, and the ground terminal of capacitance C1 is connected with the first end of resistance R1.The control of silicon-controlled D1, silicon-controlled D2 End processed is connected to controller, and controller controls silicon-controlled D1, silicon-controlled D2 according to the temperature required by plasma smelting furnace.

Second tunnel includes silicon-controlled D3, silicon-controlled D4, high frequency choke coil L11, capacitance C2 and resistance R2, wherein silicon-controlled D3 Cathode, the anode of silicon-controlled D4, the first end of high frequency choke coil L11, the first end of capacitance C2 be connected to third node, controllably The anode of silicon D2, the cathode of silicon-controlled D4, the second end of high frequency choke coil L11, the second end of resistance R2 are connected to fourth node, The ground terminal of capacitance C2 is connected with the first end of resistance R2.Silicon-controlled D3, silicon-controlled D4 control terminal be connected to controller, control Device controls silicon-controlled D3, silicon-controlled D4 according to the temperature required by plasma smelting furnace.

Third road includes silicon-controlled D5, silicon-controlled D6, high frequency choke coil L12, capacitance C3 and resistance R3, wherein silicon-controlled D5 Cathode, the anode of silicon-controlled D6, the first end of high frequency choke coil L12, the first end of capacitance C3 be connected to the 5th node, controllably The anode of silicon D5, the cathode of silicon-controlled D6, the second end of high frequency choke coil L12, the second end of resistance R3 are connected to the 6th node, The ground terminal of capacitance C3 is connected with the first end of resistance R3.Silicon-controlled D5, silicon-controlled D6 control terminal be connected to controller, control Device controls silicon-controlled D5, silicon-controlled D6 according to the temperature required by plasma smelting furnace.

High frequency choke coil L7 is provided between the first end and first node of secondary coil N1, second node is connected to rectification The input terminal of circuit D7, the output terminal of rectification circuit D7 are connected to electrode 109a through high frequency choke coil L13.

High frequency choke coil L8 is provided between the first end of secondary coil N2 and third node, fourth node is connected to rectification The input terminal of circuit D8, the output terminal of rectification circuit D8 are connected to electrode 109b through high frequency choke coil L14.

High frequency choke coil L9 is provided between the first end of secondary coil N3 and the 5th node, the 6th node is connected to rectification The input terminal of circuit D9, the output terminal of rectification circuit D9 are connected to electrode 109c through high frequency choke coil L15.

The resistance R4 and capacitance being in series are provided between node and ground electrode that the second end of N number of secondary coil is connected C4, the capacitance C4 are used to filter out high pressure to prevent damage of the high-voltage pulse to power regulating eqiupment and rectification circuit.

Fig. 4 is the circuit diagram of AC power supplies provided by the invention, as shown in figure 4, according to one embodiment of the invention, AC power supplies Including transformer and power regulating eqiupment, wherein, the time variant voltage utensil there are one primary coil N20 and N number of secondary coil, as N21, N22, N23, N are the integer more than or equal to 3..

Power regulating eqiupment circuit includes N roads, and e.g., the first via includes silicon-controlled D21, silicon-controlled D22, capacitance C21 and resistance R21, The cathode of wherein silicon-controlled D21, the anode of silicon-controlled D22, capacitance C21 first end be connected to the 7th node, silicon-controlled D21's Anode, the cathode of silicon-controlled D22, resistance R21 second end be connected to the 8th node, the second end of capacitance C21 and resistance R21's First end is connected.Silicon-controlled D21, silicon-controlled D22 control terminal be connected to controller, controller is according to required by plasma smelting furnace Temperature silicon-controlled D21, silicon-controlled D22 are controlled.

Second tunnel include silicon-controlled D23, silicon-controlled D24, capacitance C22 and resistance R22, wherein the cathode of silicon-controlled D23, can The anode of control silicon D24, the first end of capacitance C22 are connected to the 9th node, the anode of silicon-controlled D22, silicon-controlled D24 cathode, The second end of resistance R22 is connected to protelum point, and the ground terminal of capacitance C22 is connected with the first end of resistance R22.Silicon-controlled D23, The control terminal of silicon-controlled D24 is connected to controller, controller according to the temperature required by plasma smelting furnace to silicon-controlled D23, can Control silicon D24 is controlled.

Third road include silicon-controlled D25, silicon-controlled D26, capacitance C23 and resistance R23, wherein the cathode of silicon-controlled D25, can The anode of control silicon D26, the first end of capacitance C23 are connected to the 15th node, the anode of silicon-controlled D25, silicon-controlled D26 it is negative Pole, resistance R23 second end be connected to the 12nd node, the ground terminal of capacitance C23 is connected with the first end of resistance R23.Controllably Silicon D25, silicon-controlled D26 control terminal be connected to controller, controller is according to the temperature required by plasma smelting furnace to silicon-controlled D25, silicon-controlled D26 are controlled.

It is provided with the high frequency choke coil L27 being in series and capacitance C25 between secondary coil N21 and the 7th node, Section eight Point is connected to electrode 105a.The high frequency choke coil L28 and capacitance being in series are provided between secondary coil N22 and the 9th node C26, protelum point are connected to electrode 105b.The high frequency yoke stream being in series is provided between secondary coil N23 and the 11st node Circle L29 and capacitance C27, the 12nd node are connected to electrode 105c.

Power regulating eqiupment is provided between node and ground electrode that the second end of N number of secondary coil is connected, including silicon-controlled D23, silicon-controlled D24, capacitance C22 and resistance R22, wherein the cathode of silicon-controlled D23, the anode of silicon-controlled D24, capacitance C22 First end is connected, the anode of silicon-controlled D22, the cathode of silicon-controlled D24, resistance R22 second end be connected and be connected to ground electrode, The ground terminal of capacitance C22 is connected with the first end of resistance R22.

Fig. 5 is the composition schematic diagram of heat exchanger provided by the invention, as shown in figure 3, heat exchanger includes high-temperature gas Branch, heating tube 8, heating tube 14, heating tube 22 and water tank 27 are inputted, wherein, heating tube 8, heating tube 14, heating tube 22 are set In water tank 27.High-temperature gas input branch is connected to the water inlet of heating tube 8, high-temperature gas input branch packet by water pipe 6 Sequentially connected shut-off valve 2, check valve 3, air pump 4 and shut-off valve 5 are included, wherein, shut-off valve 2 is used to control the gas supply feelings of tracheae 1 Condition, when maintenance, are also used for cut-out gas circuit；Check valve 3 is used to control the flow direction of the water in tracheae 1, and air pump 4 is used to supply to heating tube 8 Gas；Shut-off valve 5 cuts off gas circuit for controlling gas supply situation in maintenance.The exhaust outlet for being in charge of 8 is added to pass sequentially through tracheae 7, electronic Shut-off valve 9, regulating valve 10, shut-off valve 11 are connected to the first water inlet of steam manifold 300, wherein, electric check valve 9 is used to control The gas supply situation of tracheae 7, while cut-out water route is also used in maintenance；Regulating valve 10 is used to adjust the flow of gas；Shut-off valve 11 For controlling gas supply situation, while gas circuit is cut off in maintenance.Electric check valve 9, regulating valve 10 and 11 both ends of shut-off valve are also simultaneously Shut-off valve 12 is associated with, branch normal operation is kept when overhauling shut-off valve 9, regulating valve 10, shut-off valve 11.The of steam manifold 300 One gas outlet is connected to the air inlet of heating tube 14 by water pipe 13；The exhaust outlet of heating tube 14 transtracheal 15, shut-off valve successively 16th, check valve 17, circulating pump 18 and shut-off valve 19 are connected to the second air inlet of steam manifold 300, and shut-off valve 16 is used to control gas The gas supply situation of pipe 15, when maintenance, are also used for cut-out gas circuit；Check valve 17 is used to control the flow direction of the gas in tracheae 15, circulating pump 17 are used to recycle the gas in plenum chamber；Shut-off valve 19 cuts off water route for controlling water supply situation in maintenance；Plenum chamber 300 Venthole 21 air intake for being connected to heating tube 22 by the road；The gas outlet of heating tube 22 successively by the road 23, shut-off valve 24 The gas through cooling is provided out with pipeline 25, wherein, shut-off valve 25 is provided out gas for controlling.Heat exchanger further includes Drain valve 26, in cleaning, wherein for discharging the sewage in plenum chamber.

Fig. 6 is the composition schematic diagram of condenser provided by the invention, as shown in figure 4, heating condenser provided by the invention Including heat exchanger and cooling water input branch, cooling water input branch is connected to the cooling water inlet of heat exchanger, cooling water It inputs branch and includes sequentially connected regulating valve 36, shut-off valve 35, check valve 34, water supply pump 33 and shut-off valve 32, wherein, it adjusts Valve 36 is used to adjust the water supply of cooling water；Shut-off valve 36 is used to controlling the water supply situation of water pipe 37, and when maintenance is also used for cutting off Water route；Check valve 34 is used to control the flow direction of the water in water pipe 37, and water supply pump 33 supplies water for heat exchanger；Shut-off valve 32 is used In control water supply situation, water route is cut off in maintenance.

It should be noted that " one embodiment " referred to herein, " embodiment " or " one or more implementation Example " is it is meant that the special characteristic, structure or the characteristic that describe are included at least one embodiment of the present invention in conjunction with the embodiments In.Further, it is noted that word example " in one embodiment " is not necessarily all referring to same embodiment here.

It should be noted that the present invention will be described rather than limits the invention, and ability for above-described embodiment Field technique personnel can design alternative embodiment without departing from the scope of the appended claims.In the claims, Any reference mark between bracket should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not Element or step listed in the claims.Word "a" or "an" before element does not exclude the presence of multiple such Element.The present invention can be by means of including the hardware of several different elements and being come by means of properly programmed computer real It is existing.The use of word first, second, and third does not indicate that any sequence, merely to difference.

Furthermore, it should also be noted that the language used in this specification primarily to readable and introduction purpose and select It is selecting rather than selected to explain or limit subject of the present invention.Therefore, without departing from the appended claims In the case of scope and spirit, many modifications and changes are all apparent for those skilled in the art 's.For the scope of the present invention, the disclosure done to the present invention be it is illustrative and not restrictive, it is of the presently claimed invention Protection domain is defined by the appended claims.

Claims (2)

1. a kind of sludge of sewage treatment plant plasma processing method, which is characterized in that include at least：

Sludge is handled using plasma smelting furnace to decompose harmful substance to generate synthetic gas and sludge silt；It closes High-temperature water vapor is converted water to by heat exchanger into gas；

Carbon containing raw material is blended in sludge silt and forms mixture paste, mixture paste is heated using high-temperature water vapor Concentration then carries out the slurry of concentration by incomplete oxidation stove carbonization and forms sludge carbon.

2. sludge of sewage treatment plant plasma processing method according to claim 1, which is characterized in that utilize two turntables Formula mixer alternately mixes sludge silt and carbon raw material.