CN1464221A - Thermal dissociation gasification turbulent flow injection combustion apparatus - Google Patents

Thermal dissociation gasification turbulent flow injection combustion apparatus Download PDF

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CN1464221A
CN1464221A CN 02115337 CN02115337A CN1464221A CN 1464221 A CN1464221 A CN 1464221A CN 02115337 CN02115337 CN 02115337 CN 02115337 A CN02115337 A CN 02115337A CN 1464221 A CN1464221 A CN 1464221A
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turbulent flow
gasification
gas
combustion apparatus
thermal dissociation
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CN1258056C (en
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曹蕴明
黄一村
张习斌
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Abstract

The pyrolyzing and gasifying turbulent jet combustion apparatus includes successively connected pyrolyzing and gasifying reactor, magnesium hydroxide adsorbor, high temperature catalytic reactor, turbulent jet combustor, gaseous combustor, porous ceramic filter, plasma purifier, intelligent control system, ignitor and blower. By means of the heat producing reaction mechanism, the combustion process needs no addition of outer heat source, and the comprehensive effects of the said parts make harmful gas produced in incinerating garbage be combusted, adsorbed, catalyzed, filtered and decomposed. The present invention is suitable for the incinerating treatment of medical, industrial and domestic garbage with high heat value.

Description

A kind of thermal dissociation gasification turbulent flow injection combustion apparatus
Technical field the present invention relates to mechanical a kind of thermal dissociation gasification turbulent flow injection combustion apparatus, handles especially for the thermal decomposition gasification combustion of medical treatment, industry and high heating value house refuse.
Background technology is along with urban population increases raising with people's quality of life fast, and various rubbish have become one of public hazards the biggest in the world, are having a strong impact on the sustainable development of society.Traditional mode of burying and direct combustion system disposal of refuse all can cause second environmental pollution.Produce the dioxin toxicant in the incineration treatment of garbage process for solving, extensively adopt the pyrolyzing, gasifying and incinerating technology in recent years, the processing mode of this technology comprises rubbish pyrolytic gasification and two processes of the second-time burning of fuel gas about 1100 ℃ under 450 ℃ of-600 ℃ of temperature.Chinese patent 98238003 disclosed a kind of incinerator for medical garbage, it adopts gasification, drying, burning, oxidation to carry out synchronously, compares with the grate-type incineration technology, has the advantage that system cost is low, the garbage disposal cost is low, the minimizing ratio is high.But utilize the calorific value energy of rubbish self how, minimally utilizes auxiliary thermal source, reduces the cost, and reduces the dioxin discharging, comprehensively reclaims energy aspect and also lack the necessary technology means.
Summary of the invention the objective of the invention is to utilize exothermic reaction mechanism in the pyrolytic gasification still, and making in the combustion process need not external heat source; Its turbulent flow spray combustion strengthens the turbulivity of combustion product gases, and ignition temperature improves, and the time of staying prolongs, and pernicious gas is fully burnt; Magnesium hydroxide absorption and porous ceramics filter, and the integrated use of high-temperature catalytic reaction and plasma decomposes purification makes that pernicious gas is adsorbed, catalysis, filtration, decomposition, realizes pernicious gas low emission cheaply.
The present invention includes the feeding device 12, pyrolytic gasification still 1, gas-phase combustion chamber 5, air supply device 10, fueller 11, residual heat using device 7, air-introduced machine and the chimney 8 that link successively; It is characterized in that: serial connection magnesium hydroxide absorber 2 between pyrolytic gasification still 1 and turbulent flow atomizer burner 3 has high-temperature catalytic reactor 4 in combustible gas spout 35 outer setting of turbulent flow atomizer burner.Between pyrolytic gasification still 1 and gas phase combustion chamber 5, turbulent flow atomizer burner 3 is set.Between gas-phase combustion chamber 5 and residual heat using device 7, be provided with porous ceramic filter 6, between porous ceramic filter 6 coarse filtration and fine filtration plate, be provided with plasma purifier.
Pyrolytic gasification still 1 autoclave body bottom of the present invention and periphery are provided with air blanketing 18 and are distributed with uniform air vent 20, and kettle one side lower part is provided with ash gate 24, and the top is provided with charging aperture 13, safety valve 15, pressure tap 14, bottom one side is provided with igniter 22, and the still inwall is provided with refractory lining layer 19.
Magnesium hydroxide absorber 2 of the present invention is serially connected between the air inlet 42 of outlet 17 of pyrolytic gasification still 1 combustible gas and high-temperature catalytic reactor 4, establishes magnesium hydroxide adsorbing sphere 26 in magnesium hydroxide absorber 2 cavitys, and the cavity bottom is whirlwind gravity depositing dust district 30.
Turbulent flow atomizer burner 3 of the present invention is the cylinder of a band air blanketing, its outside side is an air preheater 39, there are a plurality of injection cylindrical cavities 34 of high-temperature heat-resistance material cast molding inside, each sprays the air vent 38 that oriented Way out tilts in the cylindrical cavity, arrival end one side of cylinder is combustible gas import 32, opposite side is an igniter 36, and middle is igniting chamber 37, and the port of export is a combustion product gases spout 35.
High-temperature catalytic reactor 4 of the present invention is encircled in turbulent flow atomizer burner flue gas spout 35 outsides, the cellular refractory ceramics catalysis of its inner filling piece 41.
Porous ceramic filter 6 of the present invention is serially connected between gas-phase combustion chamber 5 and the residual heat using device, and cavity respectively is provided with fine filtering 46 and 48 2 blocks of porous ceramic plates of coarse filtration and pressure tap 50 up and down, and the cavity bottom is whirlwind gravity depositing dust district 51.
Plasma purifier of the present invention is located at porous ceramic filter 6 inner chambers middle part, between positive electrode 43 and negative electrode 44, inserts super-high pressure pulse.
Intelligence control system 9 of the present invention connects pyrolytic gasification still 1, turbulent flow atomizer burner 3, gas-phase combustion chamber 5, porous ceramic filter 6, air-introduced machine and chimney 8, air supply device 10, fueller 11, by the PLC Programmable Logic Controller all temps, pressure, pressure reduction and gas sensor are carried out data acquisition and processing (DAP), control system is by the temperature and pressure parameter operation of design.The present invention compares the technological merit that has with prior art and is:
1. adopt polynary samplings such as temperature, pressure, gas sensor at the pyrolytic gasification still, regulate fuel feeding, the air feed of pyrolytic gasification still and turbulent flow atomizer burner by intelligence control system, guarantee the required reducing atmosphere of refuse pyrolysis gasification in the pyrolytic gasification still, make organic matter and other combustible in the rubbish when the part spontaneous combustion, provide pyrolysis required thermal source for the pyrolytic gasification still.The pyrolytic gasification temperature in the kettle is controlled between 450 ℃-600 ℃, so the metal in the rubbish is not oxidized, and the catalyst that difficult generation impels the dioxin toxic gas to form is as copper chloride, copper sulphate.Excess air coefficient in the pyrolytic gasification still is lower, can reduce exhaust smoke level greatly, reduces the investment of tail gas treatment device.
2. the fuel gas of discharging in the pyrolytic gasification still is by the magnesium hydroxide absorber time, and wherein hydrogen chloride is had active magnesium hydroxide absorption, is controlled at the generating capacity of toxic gases such as dioxin low-level.
3. enter high-temperature catalytic reactor by the fuel gas behind the magnesium hydroxide absorber, the catalyst of Tian Chonging can be an innocuous gas with the pernicious gas catalytic pyrolysis under hot environment therebetween.
4. the fuel gas by high temperature catalyzer is in through the turbulent flow atomizer burner of igniter preheating and lights, gas after lighting is mixing back generation reinforcement turbulent flow with the air-flow that sprays from air vent, and in spray chamber, produce continuous eddy combustion, spray into the gas-phase combustion chamber then.Turbulivity when the optimal control that air is strengthened turbulent flow makes fuel gas and air mixed combustion strengthens greatly, flue gas time of staying of high temperature burning zone above 2 seconds, ignition temperature can be up to 1200 ℃ about, guarantee the abundant burning of dioxin pernicious gas and effectively elimination, eddy airstream also can play the centrifugal dust-removing effect continuously.
5. utilize the high energy lower temperature plasma technology to make space gas become the high concentration plasma rapidly, make flue gas be in the state of activation, can be decomposed into innocuous gas to pernicious gas, and the resolution ratio height, consuming little energy.
6. high-temperature tail gas is by porous ceramic filter the time, and heat can pass to porous ceramics filter element inside by radiation, convection current and three kinds of modes of conduction, and its savings heat is reached more than 900 ℃.Porous ceramic surface is long-pending to be increased greatly because the geometry of cavity and micropore makes, the capture rate of small dust is improved greatly, effectively impel the abundant decomposition and the completing combustion of the poisonous organic gas of uncombusted, and prolonged the holdup time of flue gas in hot environment, effectively eliminated combustion tail gas forms dioxin-like chemical once more and relied on when cooling catalytic condition.
7. intelligence control system is collected and is handled the information of all temps, pressure, pressure reduction and the gas sensor that are provided with in the system, and returns feedforward information, the running status of control whole system.By the interlock control of air feed and blower unit and the logic control of system temperature and pressure, guarantee rational pressure of whole process and temperature rate of change, guarantee whole system according to the temperature and pressure parameter of setting, stable, safe and reliable operation.
Description of drawings Fig. 1 overall structure schematic diagram of the present invention; Fig. 2 pyrolytic gasification still structural representation; Fig. 3 magnesium hydroxide absorber cutaway view; Fig. 4 turbulent flow atomizer burner sectional side elevation; The cross-sectional figure of Fig. 5 turbulent flow atomizer burner; Fig. 6 high-temperature catalytic reactor cutaway view; Fig. 7 porous ceramic filter cutaway view;
Embodiment is described in more detail the present invention below in conjunction with accompanying drawing:
Fig. 1 is a structure schematic flow sheet of the present invention.Structure of the present invention comprises: pyrolytic gasification still 1, magnesium hydroxide absorber 2, turbulent flow atomizer burner 3, high-temperature catalytic reactor 4, gas-phase combustion chamber 5, porous ceramic filter 6, residual heat using device 7, air-introduced machine and chimney 8, intelligence control system 9, air supply device 10, fueller 11, automatic charging device 12.Its job step is: feed intake → pyrolytic gasification → magnesium hydroxide absorption → high-temperature catalytic reaction → turbulent flow spray combustion → plasma for purification → porous ceramics filtration → UTILIZATION OF VESIDUAL HEAT IN → exhaust emissions.
Detailed workflow is: automatic charging device 12 drops into quantitative rubbish and antichlor in the pyrolytic gasification still 1, intelligence control system 9, sending instruction startup air supply device 10 blows in the pyrolytic gasification still, starting fueller 11 simultaneously lights a fire to the oil spout of pyrolytic gasification still, light rubbish in the pyrolytic gasification still, control system 9 obtains data by the temperature sensor of being located in the gasification still, return feedback control to pyrolytic gasification still 1 air feed and injection process, finally reach the interior rubbish of stove and be in anoxic spontaneous combustion state, and guarantee to be in 450 ℃-600 ℃ reducing atmosphere in the pyrolytic gasification still.Turbulent flow atomizer burner 3 starts operation simultaneously under the control of control system 9, air supply device 10 is sent into the new wind of capacity, the igniting of igniter commencement of fuel injection, pre-thermal turbulence atomizer burner by air vent.The fuel gas that pyrolytic gasification still 1 is sent here is earlier through magnesium hydroxide absorber 2, pass through high temperature catalyzer 4 again, after entering igniting then the chamber being lighted, the air through preheating that air vent sprays in gas that is firing and the spray chamber produces to be strengthened turbulences and produce continuous eddy combustion in spray chamber, sprays into gas-phase combustion chamber 5 then.The furnace temperature of gas-phase combustion chamber rises to more than 1200 ℃ gradually, forms stable main combustion process.In this stage, control system 9 is by the analysis to system temperature and running status, but the automatic switch igniter is realized once to reach system's spontaneous combustion of secondary air control.After the high-temperature flue gas that gas-phase combustion chamber 5 internal combustion generate enters porous ceramic filter 6, some particulates in the flue gas and noxious material are attracted in the cavity and micropore of porous ceramics filter material, simultaneously carry out decomposing, purifying by plasma purifier again, the gas of smokeless at last, dustless, no dioxin is by smoke stack emission.
Shown in Fig. 2,3,4,5,6,7: the body of heater of pyrolytic gasification still is provided with refractory lining layer 19, and the blower fan air-supply enters air chamber 23 and air blanketing 18 by air inlet 21.Autoclave body bottom and periphery have the air vent 20 that is evenly distributed to lead in the pyrolytic gasification still.Kettle one side lower part is provided with ash gate 24, igniter 22, and the top is provided with charging hole 13, pressure tap 14, safety valve 15.17 places are equipped with thermocouple thermometer 16 at flue outlet.Fuel gas enters high-temperature catalytic reactor by the magnesium hydroxide absorber.The magnesium hydroxide absorber comprises air inlet 25, gas outlet 27, access door 28, sieve plate 29, whirlwind gravity depositing dust district 30, magnesium hydroxide adsorbing sphere 26, slag-drip opening 31.High-temperature catalytic reactor is encircled in the outside of turbulent flow atomizer burner jet, comprises air inlet 42, gas outlet 40, middle filled honeycomb shape refractory ceramics filter block 41.The turbulent flow atomizer burner comprises air preheater 39, thermocouple 33, and igniter 36, igniting chamber 37, fuel gas interface 32, air vent 38 sprays cylindrical cavity 34, and the jet 35 of turbulent flow atomizer burner is connected in the gas-phase combustion chamber.Opposite side top, gas-phase combustion chamber is a flue outlet, is serially connected with porous ceramic filter and plasma purifier therebetween.Porous ceramic filter comprises into mouth 52, outlet flue 45, and slag-drip opening 49, access door 47, fine filtration plate 46, coarse filtration plate 48, thermocouple 50, the bottom is whirlwind depositing dust district 51.Be provided with the positive electrode 43 and the negative electrode 44 of plasma purifier in the porous ceramic filter chamber.Be provided with residual heat using device, air-introduced machine and chimney behind the porous ceramic filter.

Claims (10)

1. thermal dissociation gasification turbulent flow injection combustion apparatus, comprise feeding device (12) the pyrolytic gasification still (1), gas-phase combustion chamber (5), air supply device (10), the fueller (11) that link successively, residual heat using device (7), air-introduced machine and chimney (8) is characterized in that: between pyrolytic gasification still (1) and gas phase combustion chamber (5) turbulent flow atomizer burner (3) is set.
2. thermal dissociation gasification turbulent flow injection combustion apparatus according to claim 1, it is characterized in that: serial connection magnesium hydroxide absorber (2) between pyrolytic gasification still (1) and turbulent flow atomizer burner (3) has high-temperature catalytic reactor (4) in the combustible gas spout outer setting of turbulent flow atomizer burner.
3. thermal dissociation gasification turbulent flow injection combustion apparatus according to claim 1, it is characterized in that: between gas-phase combustion chamber (5) and residual heat using device (7), be provided with porous ceramic filter (6), between porous ceramic filter (6) coarse filtration and fine filtration plate, be provided with plasma purifier.
4. thermal dissociation gasification turbulent flow injection combustion apparatus according to claim 1, it is characterized in that: pyrolytic gasification still (1) autoclave body bottom and periphery are provided with air blanketing (18) and are distributed with uniform air vent (20), kettle one side lower part is provided with ash gate (24), the top is provided with charging aperture (13), safety valve (15), pressure tap (14), bottom one side is provided with igniter (22), and the still inwall is provided with refractory lining layer (19).
5. thermal dissociation gasification turbulent flow injection combustion apparatus according to claim 2, it is characterized in that: magnesium hydroxide absorber (2) is serially connected between the import (42) of pyrolytic gasification still (1) combustible gas outlet (17) and high-temperature catalytic reactor (4), establish magnesium hydroxide adsorbing sphere (26) in magnesium hydroxide absorber (2) cavity, the cavity bottom is whirlwind gravity depositing dust district (30).
6. thermal dissociation gasification turbulent flow injection combustion apparatus according to claim 1, it is characterized in that: turbulent flow atomizer burner (3) is the cylinder of a band air blanketing, its outside side is air preheater (39), there are a plurality of injection cylindrical cavities (34) of high-temperature heat-resistance material cast molding inside, each sprays the air vent (38) that oriented Way out tilts in the cylindrical cavity, arrival end one side of cylinder is combustible gas import (32), opposite side is igniter (36), middle is igniting chamber (37), and the port of export is combustion product gases spout (35).
7. thermal dissociation gasification turbulent flow injection combustion apparatus according to claim 2 is characterized in that: high-temperature catalytic reactor (4) is encircled in turbulent flow atomizer burner flue gas spout (35) outside, the cellular refractory ceramics catalysis of its inner filling piece (41).
8. thermal dissociation gasification turbulent flow injection combustion apparatus according to claim 3, it is characterized in that: porous ceramic filter (6) is serially connected between gas-phase combustion chamber (5) and the residual heat using device (7), cavity respectively is provided with coarse filtration (48) and (46) two blocks of porous ceramic plates of fine filtering and pressure tap (50) up and down, and the cavity bottom is whirlwind gravity depositing dust district (51).
9. thermal dissociation gasification turbulent flow injection combustion apparatus according to claim 3 is characterized in that: plasma purifier is located at porous ceramic filter (6) inner chamber middle part, between positive electrode (43) and negative electrode (44), inserts super-high pressure pulse.
10. thermal dissociation gasification turbulent flow injection combustion apparatus according to claim 1, it is characterized in that: intelligentized control system (9) connects pyrolytic gasification still (1), turbulent flow atomizer burner (3), gas-phase combustion chamber (5), porous ceramic filter (6), air-introduced machine and chimney (8), air supply device (10), fueller (11), by the PLC Programmable Logic Controller all temps, pressure, pressure reduction and gas sensor are carried out data acquisition and processing (DAP), control system is by the temperature and pressure parameter operation of design.
CN 02115337 2002-06-06 2002-06-06 Thermal dissociation gasification turbulent flow injection combustion apparatus Expired - Fee Related CN1258056C (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103162286A (en) * 2011-12-19 2013-06-19 苏州格瑞展泰再生能源有限公司 Biomass pyrolysis gas heat energy utilizing system
CN103868368A (en) * 2014-04-03 2014-06-18 贵研资源(易门)有限公司 Method for purifying tail gas when precious metal is smelted and accumulated in plasma furnace
CN106770898A (en) * 2016-11-24 2017-05-31 中国人民解放军装备学院 Plasma enhancing liquid fuel Flammability limits research device based on opposed firing
CN107641529A (en) * 2017-10-25 2018-01-30 广州洲际蓝色环保科技有限公司 A kind of urban community's organic solid waste thing processing unit
CN108361720A (en) * 2018-04-26 2018-08-03 吴征威 A kind of intelligentized plasma garbage combustion device
CN109395496A (en) * 2018-12-19 2019-03-01 曲靖云能投新能源发电有限公司 A kind of gas cleaning of garbage incinerating power plant and afterheat utilizing system
CN109647863A (en) * 2019-01-29 2019-04-19 北京云水浩瑞环境科技有限公司 The system and method for handling house refuse
CN109974007A (en) * 2019-05-03 2019-07-05 大连惠川环保科技有限公司 A kind of organic solid waste pyrolysis Flash Gas Compression Skid System and its working method

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103162286A (en) * 2011-12-19 2013-06-19 苏州格瑞展泰再生能源有限公司 Biomass pyrolysis gas heat energy utilizing system
CN103868368A (en) * 2014-04-03 2014-06-18 贵研资源(易门)有限公司 Method for purifying tail gas when precious metal is smelted and accumulated in plasma furnace
CN103868368B (en) * 2014-04-03 2015-12-30 贵研资源(易门)有限公司 The method of tail gas clean-up in plasma heating furnace melting enriching noble metals process
CN106770898A (en) * 2016-11-24 2017-05-31 中国人民解放军装备学院 Plasma enhancing liquid fuel Flammability limits research device based on opposed firing
CN106770898B (en) * 2016-11-24 2019-03-01 中国人民解放军战略支援部队航天工程大学 Plasma enhancing liquid fuel Flammability limits research device based on opposed firing
CN107641529A (en) * 2017-10-25 2018-01-30 广州洲际蓝色环保科技有限公司 A kind of urban community's organic solid waste thing processing unit
CN108361720A (en) * 2018-04-26 2018-08-03 吴征威 A kind of intelligentized plasma garbage combustion device
CN109395496A (en) * 2018-12-19 2019-03-01 曲靖云能投新能源发电有限公司 A kind of gas cleaning of garbage incinerating power plant and afterheat utilizing system
CN109395496B (en) * 2018-12-19 2020-11-10 曲靖云能投新能源发电有限公司 Flue gas purification and waste heat utilization system of waste incineration power plant
CN109647863A (en) * 2019-01-29 2019-04-19 北京云水浩瑞环境科技有限公司 The system and method for handling house refuse
CN109974007A (en) * 2019-05-03 2019-07-05 大连惠川环保科技有限公司 A kind of organic solid waste pyrolysis Flash Gas Compression Skid System and its working method
CN109974007B (en) * 2019-05-03 2023-10-13 大连惠川环保科技有限公司 Pyrolysis gas treatment device for organic solid waste and working method thereof

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