CN202598536U - Refuse pyrolysis process of double-cylinder rotary kiln - Google Patents
Refuse pyrolysis process of double-cylinder rotary kiln Download PDFInfo
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- CN202598536U CN202598536U CN 201220265252 CN201220265252U CN202598536U CN 202598536 U CN202598536 U CN 202598536U CN 201220265252 CN201220265252 CN 201220265252 CN 201220265252 U CN201220265252 U CN 201220265252U CN 202598536 U CN202598536 U CN 202598536U
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Abstract
The utility model provides a refuse pyrolysis process of a double-cylinder rotary kiln, which belongs to the technical field of environmental engineering. The refuse pyrolysis process comprises a double-cylinder rotary pyrolysis kiln, a cement production line, a process connecting pipeline, a composite fuel gas pipeline, a composite fuel gas shunting pipeline, a waste gas afterheat pipeline and a refuse residue pipeline, wherein the double-cylinder rotary pyrolysis kiln comprises a pyrolysis passage, an ash heat returning passage, a kiln head cover and a kiln tail cover; the cement production line comprises a cement rotary kiln, a clinker cooler and a precalcining furnace; the process connecting pipeline comprises a tertiary air pipeline which is communicated with the clinker cooler and the kiln tail cover; the composite fuel gas pipeline is communicated with the cement rotary kiln and the kiln tail cover; the composite fuel gas shunting pipeline is communicated with the ash heat returning passage and a composite fuel gas leading-out pipe of the kiln tail cover; the waste gas afterheat pipeline is communicated with a side hot air inlet of the precalcining furnace and a waste gas exhaust opening of the kiln head cover; and the refuse residue pipeline is communicated with a side material inlet of the precalcining furnace and a refuse residue outlet of the kiln head cover. The refuse pyrolysis process of the double-cylinder rotary kiln, provided by the utility model, is applied to the cement rotary kilns to provide assistance in household refuse disposal; and as the refuse is pyrolyzed by high temperature for cooling cement clinkers, a dioxin generating condition in the refuse burning process is effectively eliminated, the heating value of the refuse is efficiently utilized and refuse ashes are also all recycled.
Description
Technical field
The utility model belongs to field of environment engineering technology, is applied to cement rotary kiln cooperative disposal house refuse.Be suitable for technology especially at the other configuration of existing cement rotary kiln production line pyrolysis rubbish; This process and technology innovation of enforcement in existing waste incineration field also suits.
Background technology
The garbage disposal of existing techniques mainly is landfill, compost, 3 kinds of comparatively common processing modes of burning.Landfill been has not only has been occupied valuable land resource, has wasted the recyclable resource of preciousness in the rubbish, and environment is caused potential impact and harm.Composting technology, many harmful substances will get into soil along with composting production, cause secondary pollution.Incineration technology is a kind of waste disposal method that developed country generally adopts, and is the effective way of waste reductionization, but burning post processing (comprise waste residue, exhaust after-treatment and burn hot utilization) investment greatly, and careless slightly meeting produces gaseous contamination.
Summary of the invention
The utility model purpose is to provide a kind of bitubular rotary kiln pyrogenation rubbish technology that can overcome above-mentioned defective, has both efficiently utilized refuse thermal value, effectively stops dioxin again and produces condition, also whole recycling cinders.
The technical scheme that the utility model adopted is:
Bitubular rotary kiln pyrogenation rubbish technology, its flow process comprises:
Bitubular revolution pyrolysis kiln; Comprise: pyrolysis passage, lime-ash return the passage of heat, drawing-in device, kiln hood cover; It comprises the combustion gas interface, the outlet of rubbish slag, kiln hood; It comprises composite fuel gas delivery line, hot blast introducting interface, concurrent heating burning gallery, concurrent heating burner, and it is installed in the concurrent heating burning gallery;
Cement producing line comprises: cement rotary kiln, and it contains: kiln hood portion, kiln afterbody, multicenter combustor, it is installed in kiln hood portion, chamotte cooler, it contains: hot air outlet, hot grog import, itself and cement rotary kiln kiln hood portion connect; Predecomposition furnace, it contains one and goes up exhaust outlet, and a following air inlet is connected with said cement kiln afterbody, a side hot air inlet, a side charging aperture, preheater, its air inlet connects the last exhaust outlet of predecomposition furnace, and discharging opening connects cement rotary kiln kiln afterbody;
Oxidation unit comprises: join the oxygen pipe, itself and one of them channel connection of multicenter combustor are joined the oxygen arm, and it is communicated with an air flue of concurrent heating burner;
Technology connects pipeline, comprises: the tertiary air pipeline, and its technology is connected the hot air outlet of chamotte cooler and the hot blast introducting interface of kiln hood; The composite fuel gas pipeline, its technology is connected the composite fuel gas delivery line of another passage of multicenter combustor and kiln hood; The composite fuel gas shunt conduit, its technology is connected another air flue of concurrent heating burner and the composite fuel gas delivery line of kiln hood; The waste gas residual heat pipeline, its technology is connected the side hot air inlet of predecomposition furnace and the combustion gas interface of kiln hood cover; Rubbish slag pipeline, its technology are connected the rubbish slag outlet of the side charging aperture and the kiln hood cover of predecomposition furnace.
Said pyrolysis passage, it comprises inner barrel, feed pipe, heat carrier intake channel, inner core material guide device, ladder necking down cylinder, resistance material spiral, external heating medium outlet passage, and said feed pipe front end connects with the drawing-in device dynamic seal (packing); The inner barrel front end is inserted in the rear end; The ring segment that feed pipe and inner barrel are axially staggered, attaching heat carrier intake channel, the built-in inner core material guide device in inner barrel middle part; The inner barrel afterbody has a ladder necking down cylinder; Its built-in resistance material spiral, the external heating medium outlet passage of ladder necking down cylinder, an end of interior cover composite fuel gas delivery line;
Said lime-ash returns the passage of heat, and the circular passage between inner barrel and the outer cylinder body comprises: outer cylinder body, its built-in urceolus material guide device; Excessive slag ring flat-plate is packaged on the outer cylinder body head end, and the ring surface of said excessive slag ring flat-plate inner edge and inner barrel outer rim constitutes the slag gas outlet of overflowing, and holds the slag ring flat-plate; Be packaged on the outer cylinder body tail end, the said ring surface that holds slag ring flat-plate inner edge and inner barrel outer rim constitutes hot gas import, support; Rigid attachment outer cylinder body and inner barrel, transmission device drives outer cylinder body and inner barrel; Said excessive slag gas outlet all communicates with waste gas interface, the outlet of rubbish slag of kiln hood cover; Said hot gas import all communicates with hot blast introducting interface, the concurrent heating burning gallery of kiln hood; Lime-ash returns passage of heat front end and connects with the dynamic seal (packing) of kiln hood cover, and the rear end connects with the dynamic seal (packing) of kiln hood;
The heat carrier intake channel of said pyrolysis passage contains: a helical form endless tube, its feed end and discharge end have an axial lift, a scoop; Tipping is in helical form endless tube feed end outer rim; And the tangential stretches out, and the scoop collar extension leaves with the outer cylinder body inwall mutually, and rotates with inner barrel and outer cylinder body; Whenever rotate a circle with inside and outside cylindrical shell, orientation is drawn and is got lime-ash and return the lime-ash that heated in the passage of heat and get in the helical form endless tube; The inner ring sleeve of said helical form endless tube connects feed pipe, and outer shroud departs from helical form endless tube circumference, connects one group of a plurality of ball groove to overhanging; Make outer shroud integral body be polygonal, each helical form endless tube smallest radial cross-sectional passage place each with a ball valve bore to separation, and dispose a steel ball in that ball valve mouth direction of rotation rear side is corresponding; A ball guilding trough plate, ball guilding trough plate are limited in steel ball between the ball groove between ball valve mouth and top, polygonal angle and move, and the helical form endless tube rotates with inside and outside cylindrical shell; When the ball groove is lower than ball valve mouth position; Steel ball leaves the ball valve mouth, falls into the ball groove that departs from the circular passage, and material can get into a valve position behind the circular passage; When the ball groove is higher than ball valve mouth position; Steel ball leaves the ball groove, falls into the ball valve mouth of circular passage, and material must not rollback; The setting of ball valve quantity in the helical form endless tube; Should guarantee at any one time to have at least a ball valve mouth to be sealed, thereby the gas circuit that any moment pyrolysis passage and lime-ash return between the passage of heat is deadened all by steel ball.
System is work like this:
Get into the pyrolysis passage of bitubular revolution pyrolysis kiln through the house refuse of pre-treatment (letter sorting, broken, oven dry); With return at lime-ash that the passage of heat is heated to about 1000 ℃ and mix through the cinder that scoop, heat carrier intake channel get into the pyrolysis passage; Owing to adopt heat carrier heat transfer method; Rubbish is risen to more than 850 ℃ very soon, and rubbish is composite fuel gas (the little molecule chain hydrocarbon of C1～C5, H2, CO etc.) and carbon shape thing (lime-ash that contains carbon residue) by pyrolysis under anoxia condition; Composite fuel gas is from the inner core of bitubular revolution pyrolysis kiln, and derives through the composite fuel gas delivery line of kiln hood, through the composite fuel gas pipeline, gets into the multicenter combustor of cement rotary kiln, joins the oxygen burning, is the heat supply of cement kiln calcining grog; Carbon shape thing behind the refuse pyrolysis is moved to the inner barrel tail end in the guide effect of inner core material guide device; Because the resistance material effect of the built-in resistance material spiral of ladder necking down cylinder; Force carbon shape thing through the peripheral heating medium outlet passage of ladder necking down cylinder; The lime-ash that gets between inside and outside cylindrical shell returns the passage of heat, under the effect of urceolus material guide device guide, moves to the cylindrical shell head end; Simultaneously, the hot blast that comes out from chamotte cooler (being commonly called as " tertiary air " the cement burning, about about 1000 ℃) gets into lime-ash through tertiary air pipeline, hot blast introducting interface, hot gas import and returns the passage of heat; Heating carbon shape thing, simultaneously, carbon residue burns in " tertiary air " and heat supply in the carbon shape thing; Carbon residue after-flame in the carbon shape thing; Be cinder, when tertiary air thermal source and carbon residue burning deficiency so that cinder is warmed up to the technological temperature (about about 1000 ℃) of design, then open the concurrent heating burner; Composite fuel gas is imported from the composite fuel gas shunt conduit; Join the oxygen burning, hot gas gets into lime-ash through concurrent heating burning gallery, hot gas import and returns the passage of heat, is the heat carrier technological temperature of cinder heat supply to the pyrolytic process requirement; , under the guide effect of urceolus material guide device, when returning the excessive slag ring flat-plate that moves on to the outer cylinder body head end, drawn by the scoop of heat carrier intake channel and to get through the high-temperature ash of heating; Get into the helical form endless tube, draw when getting the high temperature cinder and upwards rotating in minimum point when scoop, the steel ball of the ball valve mouth of scoop second half leaves the ball valve mouth in succession; Under the effect of ball guilding trough plate, tumble to the ball groove the remote interior ring of ball groove from the helical form endless tube; Thereby the helical form that steel ball does not stop up lime-ash is advanced; The cinder that gets into scoop gets into back one ring section in succession through the ball valve mouth, implements from the part migration of helical form endless tube entrance point to the port of export; Steel ball before the scoop in the ball groove of half cycle crosses peak with the ball valve mouth.Get back to the ball valve mouth in succession, prevent that cinder from backflowing, simultaneously,, have at least a ball valve mouth to be sealed, thereby the air flue of inside and outside cylindrical shell of any moment is all deadened by steel ball because at any one time.The logical material choke principle of heating medium outlet passage is identical with the heat carrier intake channel; Just the former is not hinged with scoop; And the former derives pyrolysis passage to lime-ash with the heat carrier of pyrolysis channel end and returns the passage of heat and accept heating again; The latter returns the elevated temperature heat carrier that has been heated in the passage of heat with lime-ash and imports the pyrolysis passage; Dynamic seal (packing), kiln hood cover, kiln hood and the lime-ash that the logical material gas barrier properties of heat carrier intake channel, heating medium outlet passage is equipped with drawing-in device and pyrolysis passage again returns the dynamic seal (packing) of the passage of heat, constitutes the anaerobic condition of pyrolysis jointly, makes pyrolysis be able to continue; What said multicenter combustor and concurrent heating burner combustion were required joins oxygen joining the oxygen pipeline and joining the completion of oxygen arm by oxidation unit.
Lime-ash returns the high-temperature ash of returning the excessive slag ring flat-plate that moves on to the outer cylinder body head end in the passage of heat; A part gets into the pyrolysis passage and makes heat carrier; Another part gets into predecomposition furnace through the slag gas outlet of overflowing, the outlet of rubbish slag, rubbish slag pipeline, side charging aperture, as the raw material of cement burning; Control lime-ash incorporation is for the clinker ratio, and need not adjust proportioning process can not influence cement quality yet.
The high-temperature flue gas that lime-ash returns in the passage of heat gets into predecomposition furnace through the slag gas outlet of overflowing, combustion gas interface, waste gas residual heat pipeline, side hot air inlet; Heating gets into the material of predecomposition furnace from the upper level cyclone preheater; Substitute " tertiary air " in the former cement calcinating process; And the temperature than former tertiary air is high, thereby the predecomposition better effects if of cement raw meal, can the former cement calcinating process of negative effect.。Thermal material and flue gas exhaust outlet from the predecomposition furnace gets into preheater, gas solid separation, and solid powder gets into cement rotary kiln kiln afterbody and continues mature calcined material.
Above-mentioned technology has formed the collaborative pyrolysis house refuse of cement rotary kiln, realizes garbage as resource utilization and zero disposal of pollutants.
The beneficial effect of the utility model is:
1 with house refuse anaerobic or anoxic high temperature pyrolysis, can get the composite fuel gas of high heating value, and makes full use of the sensible heat of the composite fuel gas of high temperature pyrolysis, directly gets into multicenter combustor, has higher utilization rate of heat value than the direct burning electricity generation of rubbish;
2 adopt the carbon shape thing of tertiary air (about 1000 ℃) the heating refuse pyrolysis of rotary kiln clinker cooling; Both can make full use of in the carbon shape thing carbon residue and make thermal source; Elevated temperature heat carrier Fast Heating rubbish capable of using is again realized the high temperature pyrolysis more than 850 ℃, fundamentally avoids the dioxin formation condition;
3 adopt solid heat carrier method pyrolysis rubbish, more much higher than external-heat pyrolysis stove heat exchange efficiency;
The combustion gas of resuming a session of one of 4 refuse pyrolysis products is used for calcining cement and for the heat carrier concurrent heating; The calorific value that carbon residue burns again in two the carbon shape thing of thermal decomposition product is as the heat carrier thermal source; The lime-ash of after-flame carbon residue is made the heat carrier of pyrolysis rubbish, and unnecessary hot lime-ash gets into the hot charge of predecomposition furnace as cement production process, entirely by recycling, and non-secondary pollution; The refuse pyrolysis ash quantity of slag few (about 10%) satisfies the safe incorporation condition that does not influence the grog bulk strength easily, thereby need not adjust cement ingredient technology separately.
The hot waste gas that 5 pyrolysis kilns are discharged substitutes " tertiary air " in the former cement production process, gets into predecomposition furnace, and temperature more helps carbonate predecomposition a little more than former " tertiary air " temperature, does not influence former cement calcinating process.
Unmanageable trace heavy metal element is solidificated in the building structure through cement concrete in 6 rubbish, can realize harmless treatment.
Description of drawings
Existing diagram and the embodiment of combining further specifies:
Fig. 1 is the utility model process principle figure;
Fig. 2 is the A-A cutaway view of Fig. 1;
Among the figure: 1-bitubular revolution pyrolysis kiln; 2-tertiary air pipeline; 3-composite fuel gas pipeline; 4-composite fuel gas shunt conduit; 5-joins the oxygen arm; The 6-oxidation unit; 7-joins the oxygen pipe; The 8-multicenter combustor; The 9-chamotte cooler; The 10-cement rotary kiln; 11-kiln hood portion; 12-rubbish slag pipeline; The 13-predecomposition furnace; 14-kiln afterbody; Air inlet under the 15-; 16-side charging aperture; 17-side hot air inlet; 18-waste gas residual heat pipeline; The 19-preheater; The last exhaust outlet of 20-; The outlet of 21-rubbish slag; The 22-slag ring flat-plate that overflows; The 23-slag gas outlet of overflowing, the 24-drawing-in device; 25-dynamic seal (packing) C, 26-combustion gas interface; 27-kiln hood cover, the 28-scoop; 29-dynamic seal (packing) A, 30-heat carrier intake channel; 31-inner core material guide device, the 32-outer cylinder body; The 33-transmission device, 34-urceolus material guide device; The 35-lime-ash returns the passage of heat, the 36-support; The 37-inner barrel, 38-pyrolysis passage; 39-resistance material spiral, 40-heating medium outlet passage; 41-ladder necking down cylinder, the import of 42-hot gas; 43-holds the slag ring flat-plate, 45-dynamic seal (packing) B, 46-kiln hood; 47-hot blast introducting interface, 48-composite fuel gas delivery line; 49-concurrent heating burner, 50-concurrent heating burning gallery; The 51-hot air outlet, the hot grog import of 52-; The 53-feed pipe; The 54-cement producing line; 61-helical form endless tube, 62-ball valve mouth; The 63-steel ball; 64-ball guilding trough plate; 65-ball groove; Ring in the 67-; The 68-outer shroud;
The specific embodiment
Bitubular rotary kiln pyrogenation rubbish technology, its flow process comprises:
Bitubular revolution pyrolysis kiln 1; It comprises: pyrolysis passage 38, lime-ash return the passage of heat 35, drawing-in device 24, kiln hood cover 27; It comprises combustion gas interface 26, rubbish slag outlet 21, kiln hood 46; It comprises composite fuel gas delivery line 48, hot blast introducting interface 47, concurrent heating burning gallery 50, concurrent heating burner 49, and it is installed in the concurrent heating burning gallery;
Oxidation unit 6 comprises: join oxygen pipe 7, itself and one of them channel connection of multicenter combustor are joined oxygen arm 5, and it is communicated with an air flue of concurrent heating burner;
Technology connects pipeline, comprises: tertiary air pipeline 2, and its technology is connected the hot air outlet of chamotte cooler and the hot blast introducting interface of kiln hood; Composite fuel gas pipeline 3, its technology is connected the composite fuel gas delivery line of another passage of multicenter combustor and kiln hood; Composite fuel gas shunt conduit 4, its technology is connected another air flue of concurrent heating burner and the composite fuel gas delivery line of kiln hood; Waste gas residual heat pipeline 18, its technology is connected the side hot air inlet of predecomposition furnace and the combustion gas interface of kiln hood cover; Rubbish slag pipeline 12, its technology are connected the rubbish slag outlet of the side charging aperture and the kiln hood cover of predecomposition furnace.
Said pyrolysis passage, it comprises inner barrel 37, feed pipe 53, heat carrier intake channel 30, inner core material guide device 31, ladder necking down cylinder 41, resistance material spiral 39, external heating medium outlet passage 40, and said feed pipe front end connects with drawing-in device 24 usefulness dynamic seal (packing) C25; The inner barrel front end is inserted in the feed pipe rear end; The ring segment that feed pipe and inner barrel are axially staggered, attaching heat carrier intake channel, the built-in inner core material guide device in inner barrel middle part; The inner barrel afterbody has a ladder necking down cylinder; Its built-in resistance material spiral, the external heating medium outlet passage of ladder necking down cylinder, an end of interior cover composite fuel gas delivery line;
Said lime-ash returns the passage of heat, is the circular passage between inside and outside cylindrical shell, comprises outer cylinder body 32, its built-in urceolus material guide device 34; Excessive slag ring flat-plate 22 is packaged on the outer cylinder body head end, and the ring surface of said excessive slag ring flat-plate inner edge and inner barrel outer rim constitutes the slag gas outlet 23 of overflowing, and holds slag ring flat-plate 43; Be packaged on the outer cylinder body tail end, the said ring surface that holds slag ring flat-plate inner edge and inner barrel outer rim constitutes hot gas import 42, support 36; Rigid attachment outer cylinder body and inner barrel, transmission device 33 drives outer cylinder body and inner barrel; Said excessive slag gas outlet all communicates with waste gas interface, the outlet of rubbish slag of kiln hood cover; Said hot gas import all communicates with hot blast introducting interface, the concurrent heating burning gallery of kiln hood; Lime-ash returns passage of heat front end and is connected by dynamic seal (packing) A29 with the kiln hood cover, and the rear end is connected by dynamic seal (packing) B45 with the kiln hood;
The heat carrier intake channel of said pyrolysis passage contains a helical form endless tube 61; Its feed end and discharge end have an axial lift, a scoop 28, and tipping is in helical form endless tube feed end outer rim; And stretch out the tangential; The scoop collar extension leaves with the outer cylinder body inwall mutually, whenever rotates a circle with inside and outside cylindrical shell, and orientation is drawn and got lime-ash and return the lime-ash that heated in the passage of heat and get in the helical form endless tube; The interior ring 67 socket feed pipes of said helical form endless tube, outer shroud 68 departs from helical form endless tube circumference, connects one group of a plurality of ball groove 65 to overhanging; Make outer shroud integral body be polygonal, each helical form endless tube smallest radial cross-sectional passage place each with ball valve mouth 62 radial separations, and dispose a steel ball 63 in that ball valve mouth direction of rotation rear side is corresponding; A ball guilding trough plate 64, ball guilding trough plate are limited in steel ball between the ball groove between ball valve mouth and top, polygonal angle and move, and the helical form endless tube rotates with inside and outside cylindrical shell; When the ball groove is lower than ball valve mouth position; Ball leaves the ball valve mouth, falls into the ball groove that departs from the circular passage, and material can get into a valve position behind the circular passage; When the ball groove is higher than ball valve mouth position; Ball leaves the ball groove, falls into the spherical ball valve mouth of circular passage, and material must not rollback; The setting of helical form endless tube endosphere valve port quantity; Should guarantee at any one time to have at least a ball valve mouth to be sealed, thereby the gas circuit that any moment pyrolysis passage and lime-ash return between the passage of heat is deadened all by steel ball.
Claims (4)
1. a bitubular rotary kiln pyrogenation rubbish technology is characterized in that, comprising:
Bitubular revolution pyrolysis kiln; Comprise: pyrolysis passage, lime-ash return the passage of heat, drawing-in device, kiln hood cover; It comprises the combustion gas interface, the outlet of rubbish slag, kiln hood; It comprises composite fuel gas delivery line, hot blast introducting interface, concurrent heating burning gallery, concurrent heating burner, and it is installed in the concurrent heating burning gallery;
Cement producing line comprises: cement rotary kiln, and it contains: kiln hood portion, kiln afterbody, multicenter combustor, it is installed in kiln hood portion, chamotte cooler, it contains: hot air outlet, hot grog import, itself and cement rotary kiln kiln hood portion connect; Predecomposition furnace, it contains one and goes up exhaust outlet, and a following air inlet is connected with said cement kiln afterbody, a side hot air inlet, a side charging aperture, preheater, its air inlet connects the last exhaust outlet of predecomposition furnace, and discharging opening connects cement rotary kiln kiln afterbody;
Oxidation unit comprises: join the oxygen pipe, itself and one of them channel connection of multicenter combustor are joined the oxygen arm, and it is communicated with an air flue of concurrent heating burner;
Technology connects pipeline, comprises: the tertiary air pipeline, and its technology is connected the hot air outlet of chamotte cooler and the hot blast introducting interface of kiln hood; The composite fuel gas pipeline, its technology is connected the composite fuel gas delivery line of another passage of multicenter combustor and kiln hood; The composite fuel gas shunt conduit, its technology is connected another air flue of concurrent heating burner and the composite fuel gas delivery line of kiln hood; The waste gas residual heat pipeline, its technology is connected the side hot air inlet of predecomposition furnace and the combustion gas interface of kiln hood cover; Rubbish slag pipeline, its technology are connected the rubbish slag outlet of the side charging aperture and the kiln hood cover of predecomposition furnace.
2. bitubular rotary kiln pyrogenation rubbish technology according to claim 1; It is characterized in that: the pyrolysis passage of said bitubular revolution pyrolysis kiln comprises: inner barrel, feed pipe, heat carrier intake channel, inner core material guide device, ladder necking down cylinder, resistance material spiral, external heating medium outlet passage, and said feed pipe front end connects with the drawing-in device dynamic seal (packing); The inner barrel front end is inserted in the rear end; The ring segment that feed pipe and inner barrel are axially staggered, attaching heat carrier intake channel, the built-in inner core material guide device in inner barrel middle part; The inner barrel afterbody has a ladder necking down cylinder; Its built-in resistance material spiral, the external heating medium outlet passage of ladder necking down cylinder, an end of interior cover composite fuel gas delivery line.
3. bitubular rotary kiln pyrogenation rubbish technology according to claim 1 is characterized in that: the lime-ash of said bitubular revolution pyrolysis kiln returns the passage of heat, is the circular passage between inner barrel and the outer cylinder body; Comprise: outer cylinder body, its built-in urceolus material guide device, the slag ring flat-plate overflows; Be packaged on the outer cylinder body head end, the ring surface of said excessive slag ring flat-plate inner edge and inner barrel outer rim constitutes the slag gas outlet of overflowing, and holds the slag ring flat-plate; Be packaged on the outer cylinder body tail end, the said ring surface that holds slag ring flat-plate inner edge and inner barrel outer rim constitutes hot gas import, support; Rigid attachment outer cylinder body and inner barrel, transmission device drives outer cylinder body and inner barrel; Said excessive slag gas outlet all communicates with waste gas interface, the outlet of rubbish slag of kiln hood cover; Said hot gas import all communicates with hot blast introducting interface, the concurrent heating burning gallery of kiln hood; Lime-ash returns passage of heat front end and connects with the dynamic seal (packing) of kiln hood cover, and the rear end connects with the dynamic seal (packing) of kiln hood.
4. bitubular rotary kiln pyrogenation rubbish technology according to claim 1 is characterized in that: the heat carrier intake channel of the pyrolysis passage of said bitubular revolution pyrolysis kiln, contain: a helical form endless tube; Its feed end and discharge end have an axial lift; A scoop, tipping is in helical form endless tube feed end outer rim, and stretch out the tangential; The scoop collar extension leaves with the outer cylinder body inwall mutually, and rotates with inner barrel and outer cylinder body; The inner ring sleeve of said helical form endless tube connects feed pipe, and outer shroud departs from helical form endless tube circumference, connects one group of a plurality of ball groove to overhanging; Make outer shroud integral body be polygonal, each helical form endless tube smallest radial cross-sectional passage place each with a ball valve bore to separation, and dispose a steel ball in that ball valve mouth direction of rotation rear side is corresponding; A ball guilding trough plate, ball guilding trough plate are limited in steel ball between the ball groove between ball valve mouth and top, polygonal angle and move, and the helical form endless tube rotates with inside and outside cylindrical shell; When the ball groove is lower than ball valve mouth position; Steel ball leaves the ball valve mouth, falls into the ball groove that departs from the circular passage, and material can get into a valve position behind the circular passage; When the ball groove is higher than ball valve mouth position; Steel ball leaves the ball groove, falls into the ball valve mouth of circular passage, and material must not rollback; The setting of ball valve quantity in the helical form endless tube; Should guarantee at any one time to have at least a ball valve mouth to be sealed, thereby the gas circuit that any moment pyrolysis passage and lime-ash return between the passage of heat is deadened all by steel ball.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220265252 CN202598536U (en) | 2012-05-29 | 2012-05-29 | Refuse pyrolysis process of double-cylinder rotary kiln |
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| CN 201220265252 CN202598536U (en) | 2012-05-29 | 2012-05-29 | Refuse pyrolysis process of double-cylinder rotary kiln |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706140A (en) * | 2012-05-29 | 2012-10-03 | 倪文龙 | Pyrolysis garbage technology performed by means of double-cylinder rotary kiln |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102706140A (en) * | 2012-05-29 | 2012-10-03 | 倪文龙 | Pyrolysis garbage technology performed by means of double-cylinder rotary kiln |
| CN102706140B (en) * | 2012-05-29 | 2014-04-09 | 倪文龙 | Pyrolysis garbage technology performed by means of double-cylinder rotary kiln |
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