CN102249225A - System using biomass for heat supply for producing activated carbon by fly ash - Google Patents

System using biomass for heat supply for producing activated carbon by fly ash Download PDF

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Publication number
CN102249225A
CN102249225A CN201110157834XA CN201110157834A CN102249225A CN 102249225 A CN102249225 A CN 102249225A CN 201110157834X A CN201110157834X A CN 201110157834XA CN 201110157834 A CN201110157834 A CN 201110157834A CN 102249225 A CN102249225 A CN 102249225A
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China
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biomass
gas
pyrolysis
leads
waste heat
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CN201110157834XA
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Chinese (zh)
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CN102249225B (en
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许闽清
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福建省龙岩龙能粉煤灰综合利用有限公司
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/10Biofuels, e.g. bio-diesel
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • Y02P20/129Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Abstract

The invention discloses a system using biomass for heat supply for producing activated carbon by fly ash. The system comprises an activated carbon production subsystem, and the activated carbon production subsystem comprises a stirring device, a drying apparatus, a carbonizing apparatus and a first activating device. The system further comprises a biomass pyrolysis subsystem, and the biomass pyrolysis subsystem comprises a heat supply unit, a biomass pyrolyzing furnace and a waste heat boiler, wherein, the waste heat boiler comprises a first heat exchange pipeline; the biomass pyrolyzing furnace introduces high-temperature biomass pyrolysis gas into the first heat exchange pipeline through a first pyrolysis gas pipe; and the waste heat boiler introduces the cooled biomass pyrolysis gas into the heat supply unit through a second pyrolysis gas pipe. The system has the beneficial effects that heat of the high-temperature biomass pyrolysis gas is absorbed through the waste heat boiler, water in the waste heat boiler is heated into water vapor by heat exchanging, and the cooled biomass pyrolysis gas is introduced into the heat supply unit for combustion so as to fully utilize heat and combustible gas which are generated during the biomass pyrolysis process, thus achieving the purpose of maximum resource utilization.

Description

A kind of biomass that adopt are carried out system heat supply, produced gac by flyash
Technical field
The present invention relates to biomass utilization and gac manufacturing, more particularly, the present invention relates to a kind of biomass that adopt and carry out system heat supply, produce gac by flyash.
Background technology
Biomass energy is a kind of clean reproducible energy, and in energy dilemma and environmental problem serious day by day today, the development and use biomass energy has very great strategic importance.Populous nation, large agricultural country, energy consumption big country that China is such utilize biomass resource to improve energy situation, have more realistic meaning.How making full use of biomass resource is the direction that people are exploring always and studying.The common mode of utilizing is that biomass are carried out cracking.Biomass cracking produces pyritous splitting gas and carbon residue, and the various products that its scission reaction produces all have the value of utilization, and for example splitting gas can burn, and carbon residue can be used to make gac, but lacking a kind of efficient manner fully utilizes it.
Chinese patent 200410052663.4 discloses the purposes by the by product that produces in the biomass cracking prepare liquid fuel process-biomass cracking carbon residue: with the raw material of biomass cracking carbon residue as the preparation gac, make the gac with favourable absorption and decoloration performance through chemistry or physical activation method.
Chinese patent 200510009735.1 discloses a kind of pyrolysis biomass fuel can co-producing bio-oil, the boiler of combustible gas, gac, heat energy (steam or hot water), and it is made up of feeder system, external-heat pyrolysis device, heat exchange type pyrolysis installation, boiler etc.Its feeder system can be dewatered biomass fuel, outgas, heat up, and makes its energy density reach maximum value; External-heat pyrolysis device can be with the fuel fast pyrogenation in hot environment after the preparation, produce pyrolysis vapour, 900 ℃ of high temperature pyrolysis vapour pyrolysis biological material under the condition of anaerobic that the heat exchange type pyrolysis installation utilizes external-heat pyrolysis device to produce, the semicoke that produces can be used for making gac, but coproduction or per unit area yield bio oil, combustible gas, gac, heat energy (steam or hot water).
Chinese patent 200910016053.1 discloses a kind of preparation facilities of residual energy reclaiming type gac, its hotblast stove one side integrated structure is shaped on gas burner and burner blower, the hotblast stove opposite side is communicated with the partition heating chamber, partition heating chamber center vertically is shaped on the raw material of wood-charcoal chamber, bottom, raw material of wood-charcoal chamber insert is shaped on raw material of wood-charcoal chamber bottom linkage rod mechanism, pack lagging material around the partition heating chamber, raw material of wood-charcoal chamber one side at partition heating chamber middle part leaves spacing up and down and is shaped on two thermopairs, partition heating chamber top is shaped on top end cover and is used to seal the partition heating chamber, partition heating chamber top went here and there top end cover respectively communication type be shaped on raw material of wood-charcoal chamber gas outlet tube and heating chamber smoke outlet tube; Raw material of wood-charcoal chamber gas outlet tube is communicated with the tubular(surface)condenser top by T-valve, and the tubular(surface)condenser bottom is communicated with the hotblast stove tubular type, and is shaped on recirculation blower at communication passage stage casing concatenation type.
Chinese patent 201020270840.7 discloses a kind of device of continuously preparing active carbon by biomass in bulk, and wherein: this device comprises spiral drying installation, spiral carbonization-activation device, spiral cooling device, roasting kiln, waste heat boiler, recirculation blower, fan, induced draft fan, chimney, buncher, spray column, waste liquid circulatory pool, water circulating pump; The spiral drying installation is provided with charging opening, waste gas outlet, dry back material outlet and coil pipe, chuck; Spiral carbonization-activation device comprise the charing section and with two parts of activation section of its conducting.
The deficiency of technique scheme is, in the process of Preparation of Activated Carbon, has only utilized a kind of of biomass pyrolysis product, its pyrolysis product is not fully utilized, and has caused the waste of resource.
Summary of the invention
At the shortcoming of prior art, the purpose of this invention is to provide a kind of adopt biomass carry out heat supply, by the system that flyash is produced gac, it can make full use of the product of biomass pyrolytic in each link of Activated Carbon Production.
To achieve these goals, the invention provides a kind of biomass that adopt and carry out system heat supply, produce gac by flyash, it comprises the Activated Carbon Production subsystem, and this Activated Carbon Production subsystem comprises whipping appts, drying unit, carbonizing apparatus, first activating apparatus; This system also comprises the biomass pyrolytic subsystem, and this biomass pyrolytic subsystem comprises:
Heating plant, it carries out heat supply by biomass burning or pyrolysis gas of biomass to biomass pyrolysis furnace;
Biomass pyrolysis furnace, its heat that utilizes heating plant to provide carries out pyrolysis to biomass, generates the high temperature pyrolysis gas of biomass;
Waste heat boiler, it comprises first heat exchange pipe, described first heat exchange pipe has first gas inlet and first pneumatic outlet; Described biomass pyrolysis furnace leads to described first gas inlet by the first pyrolysis feed channel with the high temperature pyrolysis gas of biomass; Described first pneumatic outlet connects the second pyrolysis feed channel, and described waste heat boiler leads to cooled pyrolysis gas of biomass within the described heating plant by the described second pyrolysis feed channel.
Workflow of the present invention is as follows:
1, heating plant biomass burning, the form biomass pyrolysis stove provides heat, makes the biomass pyrolytic in the biomass pyrolysis furnace, produces the pyrolysis gas of biomass of high temperature (500 ℃-600 ℃);
2, the pyritous pyrolysis gas of biomass is transported in the waste heat boiler, by heat exchange the water in the waste heat boiler is heated, and generates water vapour, and pyrolysis gas of biomass cools to 180 ℃-250 ℃ simultaneously;
3, the pyrolysis gas of biomass after the cooling is transported in the heating plant, and heating plant biomass burning pyrolysis gas form biomass pyrolysis stove provides heat, makes the biomass pyrolytic in the biomass pyrolysis furnace, produces the pyritous pyrolysis gas of biomass;
4, repeating step 2-3.
The present invention is by being provided with the heat that waste heat boiler absorbs the high temperature pyrolysis gas of biomass, utilize heat exchange that the water in the waste heat boiler is heated to be water vapour, pyrolysis gas of biomass after the cooling leads to back heating plant and burns, make full use of heat and inflammable gas that biomass pyrolytic produces, reached the maximization of the utilization of resources.
According to an embodiment of the present invention, waste heat boiler also comprises second heat exchange pipe, and described second heat exchange pipe has second gas inlet and second pneumatic outlet; Heating plant leads to second gas inlet by first flue flue gas that produces that will burn.By such setting, the flue gas that the heating plant burning produces also can feed waste heat boiler, by heat exchange the water in the waste heat boiler is heated.
According to another embodiment of the present invention, heating plant leads to drying unit by second flue flue gas that produces that will burn.The high temperature that promptly utilizes flue gas is dried stirring material after the moulding, that treat charing.
According to another embodiment of the present invention, the biomass pyrolytic subsystem also comprises second activating apparatus, is used for the biomass carbon residue that the biomass pyrolysis furnace pyrolysis produces is activated.Like this, there are two Activated Carbon Production lines in system of the present invention: one is conventional Activated Carbon Production line, its can utilize the low side raw material for example the carbon dust that obtains of flyash flotation make low-grade first gac; Another is a raw material with the biomass carbon residue that the biomass pyrolysis furnace pyrolysis produces, and makes high-grade second gac (for example being used as the gac of foodstuff additive).The gac of making as foodstuff additive must use physical activation method, utilizes water vapour to activate.In this embodiment, the water vapour that waste heat boiler produces leads within second activating apparatus by the first water vapour pipeline, thereby the water vapour that utilizes waste heat boiler to produce activates the biomass carbon residue.In addition, in the burning ashes in the heating plant, also contain a small amount of biomass carbon residue, this part biomass carbon residue also can be used as the raw material of making second gac.
The gac activation of Activated Carbon Production subsystem can be adopted physical activation method.According to another embodiment of the present invention, the water vapour that waste heat boiler produces leads within first activating apparatus by the second water vapour pipeline, thereby the water vapour that utilizes waste heat boiler to produce activates the material in first activating apparatus, to make full use of resource, saves the use of chemicals.
According to another embodiment of the present invention, the water vapour that waste heat boiler produces leads to the outer wall of described whipping appts by the 3rd water vapour pipeline, in order to the high temperature with water vapour whipping appts is heated, and then reaches better mixing effect.
According to another embodiment of the present invention, carbonizing apparatus comprises:
Combustion unit, it has inlet mouth and air outlet;
Bitubular rotary carbide furnace, it comprises rotatable inner core and rotatable urceolus, is positioned at the heating unit of inner core, drives the drive unit of inner core and urceolus rotation, and urceolus is enclosed within outside the inner core;
Combustion gas-flue gas loop structure, this loop structure is sent into the be heated combustion gas that produced of the powdered carbon raw material of charring furnace combustion unit and is burnt, and the flue gas that combustion gas produced is further used for heating the powdered carbon raw material, it comprise a plurality of openings of charring furnace and be connected in charring furnace and combustion unit between gas pipeline.
" powdered carbon raw material " alleged among the present invention refers in particular to the raw material of charing in charring furnace, and it can be the particulate state carbonaceous material, for example the carbonaceous particles that is made by the flyash flotation.
" combustion gas " alleged among the present invention refers in particular to the inflammable gas that the powdered carbon raw material produces under heat effect, it can comprise CO, H 2, CH 4, alkane, alkene, the various volatile components of coal tar wet goods; Alleged " flue gas " is the gas that is produced after combustion gas is burnt in combustion unit.
Among the present invention, the inner core of charring furnace and the sense of rotation of urceolus can be identical, also can be opposite.Preferably, the dead in line of the axis of urceolus and inner core.
But the axis level of urceolus and inner core also can have small angle with horizontal plane, for example 5 °-8 °.Urceolus and inner core rotate under the driving of drive unit, make the powdered carbon raw material that is positioned at it heat more even more fully.
Combustion unit (for example roasting kiln) is positioned at outside the charring furnace, and it is connected with charring furnace by gas pipeline.Can be provided with gas pump in the middle of the gas pipeline.Like this, under the pumping of gas pump, the combustion gas that produces when the powdered carbon raw material charing in the charring furnace is decomposed enters the inlet mouth of combustion unit by gas pipeline, burns in combustion unit.The high-temperature flue gas that the burning back produces feeds in the charring furnace by gas pipeline.Close heating unit this moment, rely on the high-temperature flue gas in the charring furnace that the powdered carbon raw material in the charring furnace is heated and charing.The combustion gas that charing produces is again by blowback combustion unit internal combustion and produce high-temperature flue gas, so circulation.
Owing to be provided with combustion gas-flue gas loop structure, the inflammable gas that produces in the carbonization process enters the combustion unit from this loop structure and burns, the high-temperature flue gas that burning produces enters charring furnace from this loop structure, the powdered carbon raw material in the charring furnace is heated and then charing.Like this, both save the energy, and avoided a large amount of inflammable gass to enter in the atmosphere again, reduced environmental pollution.
According to another embodiment of the present invention, combustion gas-flue gas loop structure comprises first opening, second opening that is positioned at the inner core afterbody that is positioned at the inner core stem, the 3rd opening that is positioned at the urceolus afterbody; Second opening sleeve is within urceolus.
The number of second opening can have a plurality of, for example be positioned at the equidistant same vertical section of the tail end of inner core on, urceolus all is placed in all second openings in it.
The powdered carbon raw material enters from first opening part of inner core, under the effect of inner core rotation, flows to second opening, and enters urceolus through second opening, and is same under the turning effort of urceolus, flows to the 3rd opening.Combustion gas-flue gas can be following current with the powdered carbon raw material and contacts, and also can be counter current contact.When the following current contact, the inflammable gas that the powdered carbon raw material produces under heat effect flows out charring furnace from the 3rd opening, enters combustion unit and burns; The high-temperature flue gas that the inflammable gas burning produces enters charring furnace from first opening, and flows to the 3rd opening through second opening.Work as counter current contact, the inflammable gas that the powdered carbon raw material produces under heat effect flows out charring furnace from first opening, enters combustion unit and burns; The high-temperature flue gas that the inflammable gas burning produces enters charring furnace from the 3rd opening, and flows to first opening through second opening.The present invention is preferably the following current contact.
According to another embodiment of the present invention, gas pipeline comprise with first gas pipeline of first open communication, with second gas pipeline of the 3rd open communication, the other end of first gas pipeline leads to the inlet mouth or the air outlet of combustion unit, and the other end of second gas pipeline leads to the air outlet or the inlet mouth of combustion unit.
Among the present invention, activating apparatus Ke Yi Wei Si Lipu activating apparatus, it is applicable to powdered carbon after the charing or biomass charcoal powder is activated; Wherein, for the powdered carbon after the charing, water vapour pressure in the activating apparatus generally can be controlled in 1-3 gauge outfit air pressure, temperature is controlled at 950-1050 ℃, and for biomass charcoal powder, water vapour pressure in the activating apparatus generally can be controlled in 1-3 gauge outfit air pressure, and temperature is controlled at 750-850 ℃.In addition, for powdered carbon, can select rake formula activating apparatus for use without charing.Certainly, also can select the activating apparatus of other type for use, the type of its concrete processing condition and activating apparatus, raw material condition etc. are relevant.
Compared with prior art, the present invention has following beneficial effect:
1, utilize biomass to carry out not needing extra fuel from heat supply;
2, the various products of biomass combustion and pyrolysis generation all are utilized effectively, wherein
1. flue gas can be used for oven dry and heating waste heat boiler;
2. pyritous pyrolysis gas is used to heat waste heat boiler;
3. cooled cryogenic pyrolysis gas is used for burning;
4. the water vapour of waste heat boiler generation is as physically activated dose of two kinds of activating apparatus;
5. the carbon residue of biomass combustion and pyrolysis generation is used to make gac;
3, on the basis of existing product, increase a kind of high-grade activated carbon product.
The present invention is described in further detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the present invention;
Fig. 2 is the structural representation of the carbonizing apparatus in other the instrument embodiment of the present invention.
Embodiment
Embodiment 1
As shown in Figure 1, embodiments of the invention 1 comprise Activated Carbon Production subsystem and biomass pyrolytic subsystem.
Wherein, the Activated Carbon Production subsystem comprises whipping appts 11, drying unit 12, carbonizing apparatus (not shown), first activating apparatus 13.
The biomass pyrolytic subsystem comprises heating plant 21, biomass pyrolysis furnace 22, waste heat boiler 23, carbon residue collection device 24, second activating apparatus 25.
Heating plant 21 has fuel gas inlet 211, exhanst gas outlet 212, solid fuel import 213, first tail ash outlet 214, and it carries out heat supply by biomass burning or pyrolysis gas of biomass to biomass pyrolysis furnace 22.Its exhanst gas outlet 212 connects second flue, 402, the second flues 402 and leads to drying unit 12.Its first tail ash outlet 214 is connected with the first tail ash tube road 601 that leads to carbon residue collection device 24.
Biomass pyrolysis furnace 22 has pyrolysis gas outlet 221, second tail ash outlet 222, opening for feed 223, and its heat that utilizes heating plant 21 to provide carries out pyrolysis to biomass, generates the high temperature pyrolysis gas of biomass.The other end that pyrolysis gas outlet 221 is connected with the first pyrolysis feed channel, 301, the first pyrolysis feed channel 301 is connected to first gas inlet 231 of waste heat boiler 23.Second tail ash outlet 222 is connected with the second tail ash tube road 602 that leads to carbon residue collection device 24.
Waste heat boiler 23 comprises first heat exchange pipe 234, and this first heat exchange pipe 234 has first gas inlet 231, second pneumatic outlet 232, steam outlet 233.Biomass pyrolysis furnace 22 leads to the high temperature pyrolysis gas of biomass by the first pyrolysis feed channel 301 first gas inlet 231 of waste heat boiler 23; Waste heat boiler 23 utilizes the high temperature of pyrolysis gas of biomass by the water in first heat exchange pipe, the 234 heating waste heat boilers 23, generates water vapour; First pneumatic outlet 232 connects the second pyrolysis feed channel 302, and waste heat boiler 23 leads to cooled pyrolysis gas of biomass within the heating plant 21 by the second pyrolysis feed channel 302.Steam outlet 233 connects the water vapour pipeline, and this water vapour pipeline has three branches, is respectively the first water vapour pipeline 501, the second water vapour pipeline 502, the 3rd water vapour pipeline 503.Wherein, the first water vapour pipeline 501 leads within institute's second activating apparatus 25, is first gac raw material, low-grade to make the carbon dust that obtains with the flyash flotation; The second water vapour pipe, 502 roads lead within first activating apparatus 13; The 3rd water vapour pipeline 503 leads to the outer wall of whipping appts 11.
The first tail ash tube road 601 and the second tail ash tube road 602 are transported to carbon residue collection device 24 with the carbon residue that generates in heating plant 21 and the biomass pyrolysis furnace 22 respectively, and, be second gac raw material, high-grade to make with the biomass carbon residue by carbon residue collection device 24 unified being transported in second activating apparatus 25.
Embodiment 2
The high-temperature flue gas that embodiments of the invention 2 utilize heating plant 21 burnings to produce heats the water in the waste heat boiler 23.Its specific implementation is, on the basis of embodiment 1, second heat exchange pipe is set in addition on the waste heat boiler 23, and this second heat exchange pipe has second gas inlet and second pneumatic outlet.The flue gas that heating plant 21 burnings produce divides two-way, and the first via is led to second gas inlet of waste heat boiler 23 by first flue, discharges from second pneumatic outlet after heat exchange; The second the tunnel leads to drying unit 12 by first flue 402.
Embodiment 3
The other parts of present embodiment are similar to embodiment 1, but it further comprises carbonizing apparatus as shown in Figure 2, and this carbonizing apparatus comprises for example roasting kiln 77 of charring furnace and combustion unit.Wherein charring furnace comprises the drive unit (not shown) of feeding unit 71, rotatable inner core 72, rotatable urceolus 73, collection device 74, combustion gas-flue gas loop structure 75, heating unit 76, driving inner core and urceolus rotation.
Wherein, inner core 72 is the cylinder of sealing, its axis horizontal, and its inwall is provided with a plurality of plate (not shown) of raising; The end face of inner core 72 stems is provided with first opening 7503; The side of inner core 72 afterbodys is provided with a plurality of second openings 7504, its all be positioned at the equidistant same vertical section of the tail end of inner core 72 on.
Feeding unit 71 is the feed pipe 7101 that is communicated with first opening 7503; The bottom sealing of feed pipe 7101, the top is provided with opening for feed 7102; Be provided with the baffle plate 7103 that is obliquely installed, point to first opening 7503 in the feed pipe 7101; The below of the sidewall of feed pipe 7101, first opening 7503 is provided with the 5th opening 7502, the five openings 7502 and connects first gas pipeline 7501 that leads to combustion unit.
Urceolus 73 is round table-like for sealing, the dead in line of its axis and inner core 72, and the side of urceolus 73 and the angle of axis are 10 °; Urceolus 73 is enclosed within outside the inner core 72, and a plurality of second openings 7504 of inner core 72 are enclosed within the urceolus 73; The thinner stem of urceolus 73 is near the afterbody of inner core 72, and the thicker afterbody of urceolus 73 is near the stem of inner core 72; The inwall of urceolus 73 is provided with a plurality of plate (not shown) of raising.The side of urceolus 73 afterbodys is provided with a plurality of the 3rd openings 7505, its all be positioned at the equidistant same vertical section of the tail end of urceolus 73 on.
Collection device 74 is enclosed within outside the urceolus 73, and all the 3rd openings 7505 all are placed in it, and the top of collection device 74 is provided with the 4th opening 7506, the four openings 7506 and connects second gas pipeline 7507 that leads to combustion unit.The bottom of drawing mechanism 74 is provided with discharge pipe 7401.
Combustion gas-flue gas loop structure 75 comprises first gas pipeline 7501, the 5th opening 7502, first opening 7503, second opening 7504, the 3rd opening 7505, the 4th opening 7506, second gas pipeline 7507.
Heating unit 76 is the axle shape electric heating tube that is positioned at the axis place of inner core 72.
Roasting kiln 77 comprises gitter brick 7701, the inlet mouth 7702 that is positioned at roasting kiln 77 belows that is positioned at roasting kiln, the air outlet 7703 that is positioned at roasting kiln 77 tops.The inlet mouth 7702 of roasting kiln 77 is connected with the other end of second gas pipeline 7507, is provided with gas pump 78 in the middle of second gas pipeline 7507.The other end of first gas pipeline 7501 is connected to the air outlet 7703 of roasting kiln.
The workflow of this carbonizing apparatus is as follows:
1, powdered carbon raw material.The powdered carbon raw material for example enters feed pipe 7101 by the carbon granule that flyash floatingly selects from opening for feed 7102, after being stopped by baffle plate 7103, enter inner core 72 from first opening 7503, under the driving of drive unit, inner core 72 and urceolus 73 rotations, the plate of raising that drive is positioned on inner core and the outer tube inner wall rotates, and the direction of powdered carbon raw material to second opening 7504 pushed.In the process that the powdered carbon raw material moves ahead, contact with the heating unit 76 or the high-temperature flue gas that are positioned at inner core 72, and be heated.The powdered carbon raw material falls into urceolus 3 from second opening 504, and the plate of raising that is rotated pushes to the direction of the 3rd opening 505.In whole moving process, the powdered carbon raw material is heated, dry, pyrolysis, finally by charing.Powdered carbon raw material after the charing is fallen in the collection device 74 that is enclosed within outside the urceolus 73 from the 3rd opening 7505, and leaves charring furnace through discharge pipe 7401.
2, combustion gas-flue gas.Combustion gas-flue gas is that following current contacts with the powdered carbon raw material in this carbonizing apparatus.Under the heat effect of heating unit 76, powdered carbon raw material in the inner core 72 produces inflammable gas under heat effect, this inflammable gas enters urceolus 73 along the flow direction of powdered carbon raw material through second opening 7504, and entering roasting kiln through the 3rd opening 7505, the 4th opening 7506, second gas pipeline 7507, the burning back produces the pyritous flue gas in roasting kiln 77.High-temperature flue gas enters inner core 72 through first gas pipeline 7501, the 5th opening 7502, first opening 7503.Powdered carbon raw material in the inner core 72 produces inflammable gas under the heat effect of high-temperature flue gas, this inflammable gas repeats above-mentioned flow process.
Though the present invention discloses as above with preferred embodiment, is not in order to limit scope of the invention process.Any those of ordinary skill in the art, promptly every when doing a little improvement in not breaking away from invention scope of the present invention according to the equal improvement that the present invention did, should be invention scope of the present invention and contain.

Claims (10)

  1. One kind adopt biomass carry out heat supply, by the system that flyash is produced gac, it comprises Activated Carbon Production subsystem and biomass pyrolytic subsystem; Wherein:
    Described Activated Carbon Production subsystem comprises whipping appts, drying unit, carbonizing apparatus and first activating apparatus;
    Described biomass pyrolytic subsystem then comprises:
    Heating plant, it carries out heat supply by biomass burning or pyrolysis gas of biomass to biomass pyrolysis furnace;
    Biomass pyrolysis furnace, its heat that utilizes described heating plant to provide carries out pyrolysis to biomass, generates the high temperature pyrolysis gas of biomass;
    Waste heat boiler, it comprises first heat exchange pipe, described first heat exchange pipe has first gas inlet and first pneumatic outlet; Described biomass pyrolysis furnace leads to described first gas inlet by the first pyrolysis feed channel with the high temperature pyrolysis gas of biomass; Described first pneumatic outlet connects the second pyrolysis feed channel, and described waste heat boiler leads to cooled pyrolysis gas of biomass within the described heating plant by the described second pyrolysis feed channel.
  2. 2. the system as claimed in claim 1, wherein, described waste heat boiler also comprises second heat exchange pipe, described second heat exchange pipe has second gas inlet and second pneumatic outlet; Described heating plant leads to described second gas inlet by first flue flue gas that produces that will burn.
  3. 3. the system as claimed in claim 1, wherein, described heating plant leads to described drying unit by second flue flue gas that produces that will burn.
  4. 4. the system as claimed in claim 1, wherein, described biomass pyrolytic subsystem also comprises second activating apparatus, is used for the biomass carbon residue that described biomass pyrolysis furnace pyrolysis produces is activated.
  5. 5. system as claimed in claim 4, wherein, the water vapour that described waste heat boiler produces leads within described second activating apparatus by the first water vapour pipeline.
  6. 6. the system as claimed in claim 1, wherein, the water vapour that described waste heat boiler produces leads within described first activating apparatus by the second water vapour pipeline.
  7. 7. the system as claimed in claim 1, wherein, the water vapour that described waste heat boiler produces leads to the outer wall of described whipping appts by the 3rd water vapour pipeline.
  8. 8. the system as claimed in claim 1, wherein, described carbonizing apparatus comprises:
    Combustion unit, it has inlet mouth and air outlet;
    Bitubular rotary carbide furnace, it comprises rotatable inner core and rotatable urceolus, is positioned at the heating unit of described inner core, drives the drive unit of described inner core and the rotation of described urceolus, and described urceolus is enclosed within outside the described inner core;
    Combustion gas-flue gas loop structure, this loop structure is sent into the be heated combustion gas that produced of the powdered carbon raw material of charring furnace combustion unit and is burnt, and the flue gas that combustion gas produced is further used for heating the powdered carbon raw material, it comprise a plurality of openings of described charring furnace and be connected in described charring furnace and described combustion unit between gas pipeline.
  9. 9. system as claimed in claim 8, wherein, a plurality of openings of described charring furnace comprise the inner core stem that is positioned at described charring furnace first opening, be positioned at the inner core afterbody of described charring furnace second opening, be positioned at the 3rd opening of the urceolus afterbody of described charring furnace; Described second opening sleeve is within described urceolus.
  10. 10. system as claimed in claim 9, wherein, described gas pipeline comprise with first gas pipeline of described first open communication, with second gas pipeline of described the 3rd open communication, the other end of described first gas pipeline leads to the inlet mouth or the air outlet of described combustion unit, and the other end of described second gas pipeline leads to the air outlet or the inlet mouth of described combustion unit.
CN201110157834XA 2011-06-13 2011-06-13 System using biomass for heat supply for producing activated carbon by fly ash CN102249225B (en)

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CN105036127A (en) * 2015-08-06 2015-11-11 西安科技大学 Coal pyrolysis and activated carbon production integrated device
CN109266370A (en) * 2018-08-16 2019-01-25 武汉光谷蓝焰新能源股份有限公司 A kind of gradual biomass high-efficiency energy-saving pyrolysis oven

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CN104211060A (en) * 2014-09-01 2014-12-17 南京理工大学 Magnetic type recycling pyrolyzer for preparing biomass activated carbon
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