CN202099061U - System preparing activated carbon by utilizing fly ash and providing with flotation and carbonizing devices - Google Patents
System preparing activated carbon by utilizing fly ash and providing with flotation and carbonizing devices Download PDFInfo
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- CN202099061U CN202099061U CN2011201992932U CN201120199293U CN202099061U CN 202099061 U CN202099061 U CN 202099061U CN 2011201992932 U CN2011201992932 U CN 2011201992932U CN 201120199293 U CN201120199293 U CN 201120199293U CN 202099061 U CN202099061 U CN 202099061U
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Abstract
The utility model discloses a system preparing activated carbon by utilizing fly ash, which comprises a flotation system and a carbonizing system. The carbonizing system comprises a combustion device, and the combustion device is provided with an air inlet and an air outlet. A double-barrel rotating carbonizing furnace comprises a rotatable inner barrel, a rotatable outer barrel, a heating device arranged in the inner barrel and a drive device driving the inner barrel and the outer barrel to rotate, and the outer barrel is sleeved outside the inner barrel. A gas-smoke return circuit structure comprises a plurality of openings arranged on the carbonizing furnace and an air pipeline connected between the carbonizing furnace and the combustion device. By means of the gas-smoke return circuit structure, combustible gas generated during the carbonizing process enters the combustion device from the return circuit structure to be combusted, and high-temperature smoke generated in the combustion enters the carbonizing furnace from the return circuit structure to heat powdered carbon raw materials in the carbonizing furnace. By means of the recycling, not only energy is saved, but also a large amount of the combustible gas is prevented from being discharged into the atmosphere, and environmental pollution is reduced.
Description
Technical field
The utility model relates to and utilizes flyash to make gac, and more particularly, the utility model relates to a kind of system by the fly-ash Preparation gac that has flotation and carbonizing apparatus.
Background technology
The charing operation is that the gas activation method is produced one of important procedure in the gac process, and this process reduces non-carbon, is fit to the needed blacking of activation procedure to produce, and is main preparation and basis before the activation.In the active carbon from coal production process, carbonization process generally includes charing and charing vent gas treatment two portions of material.
Chinese patent 88221216.8 discloses the multiscrew charring furnace that a kind of producing activated carbon by chemical method is used, and it relates to the improvement of the charring furnace that producing activated carbon by chemical method uses.Its principal feature is in fixed stove, to push material with screw rod, and the hot furnace gas discord material that gets in the stove directly contacts, but contact with heat radiation plate, makes the heat radiation plate emitting far-infrared thermal material that adds in back that is heated, completion drying, activation and carbonization process.
Chinese patent 93227406.4 discloses a kind of well formula activated carbon fiber material activation charring furnace; It fixedly installs part by body of heater and but the body of heater displacing part is formed; The body of heater that body of heater fixedly installs part is vertical, and the well formula is provided with in melt pit, and raw material is passed in and out by the upper of furnace body opening; Electrical heating element distributes in well, and electrical control system links so that furnace temperature is controlled automatically therewith.The flue of body of heater moveable part is fixedly connected with stove skirt lid.
Chinese patent 200710068892.9 discloses a kind of charring furnace; Comprise body of heater, combustion chamber; The peripheral integral coating of body of heater has the bag adiabator, and body of heater is provided with opening for feed and discharge port, and described charring furnace is provided with the waste heat recovery pipe; The waste heat recovery pipe connects body of heater and combustion chamber respectively, and waste heat recovery pipe exit is provided with portfire.
Chinese patent 201010233150.9 discloses a kind of charring furnace of producing biomass charcoal, comprises chimney, rotating furnace body; Hopper, discharge bucket, oil gas vent pipe; Rotating furnace body is by the supporting of rotation support roller, and hopper, discharge bucket, oil gas discharge pipe device are on rotating furnace body, and chimney is arranged in the rotating furnace body; Chimney is coaxial with rotating furnace body, and coaxial line and the horizontal plane that the rotating furnace body inwall is provided with screw-blade or chimney and rotating furnace body has 5 °＜& of an angle＜30 °.
Chinese patent 201010197974.5 discloses a kind of multi-tube external-heat fume reverse extraction rotary carbide furnace; It has a horizontally-inclined revolution body of heater, and the high-end side of body of heater is equipped with hopper, and low side one side has discharge port and combustion chamber; The tube bank of the annular spread along the cross section is arranged in the body of heater; Carbonized material and gas flue are separated, and carbonized material is walked tube side, and flue gas is walked shell side.
Produce flammable organism flue gas in the carbonization process, prior art does not rationally solve it.It enters and had both caused environmental pollution in the atmosphere, causes the wasting of resources again.
Still do not have in the prior art a kind ofly not only to have economized on resources, but also reduce the system that has flotation and carbonizing apparatus of environmental pollution by the fly-ash Preparation gac.
Summary of the invention
To the shortcoming of prior art, the purpose of the utility model provides and a kind ofly not only economized on resources, but also reduce the system by the fly-ash Preparation gac that has flotation and carbonizing apparatus of environmental pollution.
To achieve these goals, the utility model provides a kind of system by the fly-ash Preparation gac that has flotation and carbonizing apparatus, and it comprises floatation system and charing system.Wherein, floatation system comprises at least one flotation unit, and each flotation unit includes the cylindrical shell of vertical setting, is positioned at the overflow collection section and the tail ash collection section that is positioned at this cylindrical shell bottom at this cylindrical shell top; The overflow collection section is provided with discharge port, and tail ash collection section is provided with the outlet of tail ash;
The charing system of this system comprises:
Combustion unit, it has inlet mouth and air outlet;
Bitubular rotary carbide furnace, it comprises the drive unit of rotatable inner core and rotatable urceolus, the heating unit that is positioned at inner core, drive inner cylinder and urceolus rotation, 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 in the utility model refers in particular to the raw material of charing in charring furnace, and it can be the particulate state carbonaceous material, the carbonaceous particles that is for example made by the flyash flotation.
The inflammable gas that the powdered carbon raw material produces is refered in particular in alleged " combustion gas " in the utility model under heat effect, and 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.
In the utility model, 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 evenly more fully.
Combustion unit (for example roasting kiln) is positioned at outside the charring furnace, and it is connected with charring furnace through 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 is burnt in combustion unit through the inlet mouth of gas pipeline entering combustion unit.The high-temperature flue gas that the burning back produces feeds in the charring furnace through 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 gets into the combustion unit from this loop structure and burns; The high-temperature flue gas that burning produces gets into 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 an embodiment of the utility model, flotation unit further comprises:
Be positioned at the intravital diffusing device of air of tube, the surface of this diffusing device of air is bigger, is used for bubble and particle are reflected; The surface of diffusing device of air is provided with a plurality of pores, and these a plurality of pores are set to become different angles with horizontal plane separately, so that the intravital material of tube forms turbulent flow;
The multilayer flotation plate that be positioned at cylindrical shell, is provided with at interval has a plurality of holes on the flotation plate; The effect of this flotation plate has two: the one, make different material layering with different buoyancy; The 2nd, the size of the limited aperture bubble through the hole on the flotation plate.The aperture in the hole on the flotation plate is 0.5 centimetre-5 centimetres, and the flotation plate can be metal, various plastics or other material and processes, and it specifically can be single or multiple lift, 2-5 layer for example, and wherein bottom flotation plate is positioned at the top of the device of air that looses;
Be positioned at the distribution device on top, overflow collection section, distribution device is the container that bottom or bottom are provided with many distributing pipelines, and the end of distributing pipelines is between diffusing device of air and bottom flotation plate;
Air feeder, this air feeder is communicated with a plurality of pores on the diffusing device of air through first gas pipeline.
According to an embodiment of the utility model, at least one flotation unit, diffusing device of air is that the awl of point upward is bucket-shaped, and a plurality of pores are located on its conical surface.The purpose that the bucket-shaped diffusing device of air of this awl is set is: the bubble that 1, is combined with carbon granule is reflected to more angle by the bucket-shaped diffusing device of air of this awl, and its reflecting effect is superior to plane reflection; 2, diffusing device of air is jet, and the driving bubble scatters floating in cylindrical shell with turbulent state, reach better flotation effect; 3, the bubble that does not pass the flotation plate is bored bucket-shaped diffusing device of air reflection, thereby the effect of having aggravated turbulent motion has improved the flotation rate.In order to reach better reflecting effect, according to another embodiment of the utility model, this awl bucket angle of boring bucket-shaped diffusing device of air is 60 °-150 ° (awl bucket angle was the angle between the cross section of axle and two intersections of boring the bucket surface).It specifically can select different awl bucket angles according to different materials, adopts 90 ° awl bucket angle like CFB flyash.
Another embodiment according to the utility model; In at least one flotation unit; Cylindrical shell comprises superposed first thinner flotation section and the second thicker flotation section that is positioned at the bottom; The overflow collection section is positioned at the outside of the first flotation section, and the bottom of overflow collection section is lower than the top of the first flotation section, is used for collecting from the flotation section effusive PM for particulate matter that overflows.For example, the overflow collection section can be foraminous cylindrical vessel on the base plate, and the top of the first flotation section passes from the hole on its base plate, and like this, the PM for particulate matter that floatingly selects in the flotation section is constantly upwards piled up, and flows in the overflow collection section with regard to the barrel of crossing the flotation section; And for example, the top exterior walls of the first flotation section is provided with overflow weir or upflow tube, and the overflow collection section is the container that is positioned at this overflow weir or upflow tube below.Particularly; Be provided with divergent cone section between the first flotation section and the said second flotation section as transitional region; This divergent cone section is positioned at the top of bottom flotation plate, specifically can be between two-layer flotation plate, and for example between bottom flotation plate and the last layer flotation plate that is adjacent.Through the divergent cone section is set, make flotation unit increase plane of reflection, and then the bubble velocity that comes up from the below is slowed down and adjust its heading, the advantage of doing like this is: 1, the turbulent motion effect through reflection aggravation bubble; 2, avoid bubble along cylinder wall to the top of flotation unit and make the spillwag chute at top smooth inadequately.
According to another embodiment of the utility model, at least one flotation unit, air feeder is connected with one or more the second gas pipelines, and second gas pipeline leads in the distribution device or is connected to distributing pipelines.For example this second gas pipeline can be one, leads in the distribution device; Also can be many, be connected respectively to every distributing pipelines.In addition, total system can only be provided with an air feeder, and this air feeder delivers gas to the diffusing device of air of reflection and the distribution device of flotation units at different levels through different pipelines.Like this, can quicken to get into cylindrical shell through the fly ash grain that gas-powered is positioned at distribution device, and then improve the efficient of flotation through distributing pipelines.Drive the technical scheme that the material in the distribution device flows downward with respect to the negative pressure that produces with venturi tube in the prior art; Carry high pressure gas both can cut down the consumption of energy through gas pipeline; Again can be according to what and viscosity adjustments of gas pressure of material, and then improve the product precision.
According to another embodiment of the utility model, at least one flotation unit, also comprise the physical separation means that is positioned on barrel or the diffusing device of air.Through physical separation means is set, break combining between carbon granule and the ash content effectively, improved the flotation rate of carbon greatly.This physical separation means specifically can be ultrasonic separation means or ultrasonic broken in bulk putting, and improves peeling off of carbon granule and ash content through the emission UW, forms granularity and reaches 10,000 purpose superfine carbon granules.Particularly, this ultrasonic separation means or ultrasonic broken in bulk putting comprise ultrasonic transmitter and supporting supplementary unit.
In addition, in the floatation system of the utility model, flotation unit can be one or more, and wherein, a plurality of placed in-line flotation units can make fly ash grain through multistage flotation.For example, floatation system comprises two flotation units, and the discharge port of first flotation unit is connected with discharge pipe, and this discharge pipe leads to second flotation unit.Particularly; This discharge pipe can lead to the distribution device of second flotation unit; Other device that also can lead to second flotation unit; Storage device (be used for the device that adds chemical agent and stir to the particle of treating flotation, this device has the pipeline that is connected with the distribution device of second flotation unit) for example.
According to another embodiment of the utility model, 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 gets into from first opening part of inner core, under the effect of inner core rotation, flows to second opening, and gets into 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, gets into combustion unit and burns; The high-temperature flue gas that the inflammable gas burning produces gets into 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, gets into combustion unit and burns; The high-temperature flue gas that the inflammable gas burning produces gets into charring furnace from the 3rd opening, and flows to first opening through second opening.The utility model is preferably the following current contact.
Another embodiment according to the utility model; 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.
After fly ash grain process flotation and the charing, need through activation to make gac.The activation furnace that is suitable for the system of the utility model can be, and for example, utilizes water vapour to carry out activatory Si Lipu activation furnace and perhaps utilizes alkali to carry out the various alkali activation furnaces of activatory.When adopting the Si Lipu activation furnace, the water vapour pressure in the stove is a 1-3 normal atmosphere (gauge pressure), and temperature is about 950-1050 ℃ in the stove.
According to another embodiment of the utility model, this system also comprises and utilizes alkali to carry out the activatory activation system, and this activation system is positioned at after the charing system, and it comprises:
The nitrogen supply (NS) device, it is connected with the nitrogen inlet mouth of activation furnace through first connecting tube;
Activation furnace, it is an encloses container, is provided with heating unit in it; This activation furnace comprises first air outlet and nitrogen inlet mouth; Wherein, nitrogen inlet mouth place establishes and forms the nitrogen air curtain, and place, first air outlet is connected with second connecting tube;
First retrieving arrangement, it establishes the encloses container of absorption liquid in being, and second connecting tube injects in first retrieving arrangement, and extends to below the liquid level of absorption liquid; The liquid level top of absorption liquid is provided with the air outlet.
The activation system of the utility model is applicable to alkali to be the priming reaction of acvator.For example, be acvator with Pottasium Hydroxide, itself and the reaction at high temperature of charcoal particle are:
KOH+C→K
2CO
3+K
2O+H
2
KOH, K
2CO
3, K
2O forms etching to single graphite microcrystal or crystallite crowd and generates the hole in different apertures, and the micro-molecular gas that reaction generates in the reactivation process is like CO, CO
2, H
2, H
2O, H
2S etc., in the effusive process in existing duct, Yin Gaowen expands and plays the effect of reaming.In addition, in the activatory process, have potassium metal steam and produce.Potassium metal steam will get into graphite layers, the effect of performance pore-creating, reaming.
Because potassium metal steam is very active, directly contacting with air can blast.Generation for fear of blast will feed nitrogen in whole reactivation process, directly contact with air to stop potassium metal steam.
In order further to improve the security of the system of the utility model, preferably, in the system of the utility model, its activation furnace further comprises second air outlet, and this place, second air outlet is provided with explosion trap, and above-mentioned nitrogen air curtain is positioned at the inboard of this explosion trap.
Like this, the pressure in activation furnace surpasses certain limit, and Explosion-proof valve is opened automatically.Be provided with two effects like this: the one, when gaseous tension hour, block second air outlet of activation furnace, the barrier that overflows as the gas that stops in the activation furnace; The 2nd, when the violent expansion of the gas in the activation furnace surpasses certain limit (for example 3 kilograms), open automatically, avoid activation furnace to explode thorax.
The nitrogen air curtain is positioned at the inboard of explosion trap, has formed the twice barrier that stops the gas in the activation furnace to overflow with Explosion-proof valve.Even Explosion-proof valve is opened like this, under the stopping of nitrogen air curtain, the gas in the activation furnace still can't overflow.
In the entire reaction course and after the reaction, the gas in the activation furnace is passed in first retrieving arrangement and reclaims.Absorption liquid (for example water) in first retrieving arrangement will absorb KOH steam, K in the gas
2CO
3Steam, K
2O steam and high temperature potassium steam have in contaminative, corrodibility, the volatile hazardous gas feeding atmosphere to avoid these.
According to another embodiment of the utility model, activation furnace is provided with vertical gas pipeline; The vertical outlet of this gas pipeline is second air outlet, and this place, second air outlet is provided with explosion trap; The below of the sidewall of this gas pipeline, second air outlet has the nitrogen inlet mouth.The nitrogen inlet mouth is positioned under the Explosion-proof valve, and the high pressure nitrogen that constantly feeds forms the nitrogen air curtain at nitrogen inlet mouth place.
Compared with prior art, the utlity model has following beneficial effect:
1, owing to is provided with combustion gas-flue gas loop structure; The inflammable gas that produces in the carbonization process gets into the combustion unit from this loop structure and burns; The high-temperature flue gas that burning produces gets into charring furnace again from this loop structure, the powdered carbon raw material in the charring furnace is heated; So the energy had both been saved in circulation, had avoided a large amount of inflammable gass to enter in the atmosphere again, had reduced environmental pollution;
2, because charring furnace is provided with the bitubular, the powdered carbon raw material in the inner core is come out of the stove from urceolus after getting into urceolus, like this, in the equipment of same length, has prolonged the stroke and the heat-up time of powdered carbon raw material, makes the powdered carbon raw material by fully heating and charing;
3, the inner core of charring furnace and/or urceolus are set to round table-likely, and the powdered carbon raw material is flowed forward along the inwall of tube under the effect of partical gravity, make the powdered carbon raw material being heated in the process of flowing forward, have improved working efficiency;
4, on the barrel of the inner core of charring furnace and urceolus, be provided with and raise plate, push the powdered carbon raw material effectively and advance.
Below in conjunction with accompanying drawing the utility model is done further to specify.
Description of drawings
Fig. 1 is the structured flowchart of the utility model embodiment 1;
Fig. 2 is the structural representation of the floatation system of the utility model embodiment 1;
Fig. 3 is the structural representation of the charing system of the utility model embodiment 1;
Fig. 4 is the structural representation of the activation system of the utility model embodiment 1;
Fig. 5 is the structural representation of the floatation system of the utility model embodiment 2;
Embodiment
Embodiment 1
Present embodiment utilizes the fly ash grain flotation to obtain carbon granule (powdered carbon raw material), after drying, granulation, again it is carried out charing, and the powdered carbon after the charing is carried out activation.This embodiment comprises floatation system, charing system, activation system (as shown in Figure 1).
Shown in Figure 2 is the floatation system of present embodiment; It comprises a flotation unit, and this flotation unit comprises: storage device 11, distribution device 12, the cylindrical shell 13 that vertically is provided with, the diffusing device of air 14 of the bucket-shaped reflection of awl, multilayer flotation plate 15, air feeder 16, physical separation means such as UW tripping device 18, screen plate 19, tail ash bin 110, overflow collection section 1301, tail ash collection section 1305.
The cylindrical shell 13 that vertically is provided with can be divided into three parts, is followed successively by from top to bottom: the first flotation section 1302, divergent cone section 1303, the second flotation section 1304.Wherein, the first flotation section 1302 is thinner, is provided with one deck flotation plate 15 in it.The second flotation section 1304 is thicker, is provided with loose device of air 14 and one deck flotation plate 15 in it.Divergent cone section 1303 is the bucket-shaped transitional region of the awl of point upward between the first flotation section 1302 and the second flotation section 1304.
Tail ash collection section 1305 is that the awl of pointed end is bucket-shaped; And its bottom tip place is provided with tail ash outlet 1306; Tail ash outlet 1306 is connected with tail ash tube road 1307, and tail ash tube road 1307 is connected to tail ash bin 110, and tail ash bin 110 is positioned at the end in tail ash tube road 1307; And be enclosed within outside the tail ash tube road 1307; The terminal height in tail ash tube road 1307 are positioned on the top layer flotation plate, and the end in tail ash tube road 1307 is provided with liquid level regulation apparatus, and the height that is used for the end through regulating tail ash tube road 1307 is regulated the liquid level in the flotation unit.The bottom of tail ash bin 110 is provided with ash discharging hole 1308.Between the second flotation section 1304 and tail ash collection section 1305, be provided with screen plate 19.
The device of air 14 that looses is that the awl of point upward is bucket-shaped, and its awl bucket angle is 120 °, and its conical surface is provided with a plurality of pores 1401; It is positioned at the second flotation section 1304, and is positioned at 1305 tops, awl bucket-shaped tail ash collection section.The device of air 14 that looses is provided with a plurality of ultrasonic separation means 18.
Multilayer (for example three layers) the flotation plate 15 that is provided with at interval lays respectively in the first flotation section 1302 and the second flotation section 1304, and wherein the flotation plate 15 of bottom is positioned at the top of the bucket-shaped diffusing device of air 14 of awl.
Be provided with whipping appts 1101 in the storage device 11, be used for powdered coal ash slurry and flotation agent are fully stirred.The bottom of storage device 11 is provided with charging line 1102, and charging line 1102 is provided with slag stock pump 1103, and this charging line 1102 leads to distribution device 12.
The principle of work of this floatation system is: the staple of flyash is carbon granule and ash content.After adding flotation agent and/or collecting agent and/or other auxiliary agent, the particle in the flyash contacts, collides with bubble, and the carbon granule that flotability is good optionally adheres to bubble, and is carried rising, realizes flotation.The ash content of flotability difference is then to sinking.
Shown in Figure 3 is the charing system of present embodiment, and it comprises for example roasting kiln 27 of charring furnace and combustion unit.Wherein charring furnace comprises the drive unit (not shown) of feeding unit 21, rotatable inner core 22, rotatable urceolus 23, collection device 24, combustion gas-flue gas loop structure 25, heating unit 26, drive inner cylinder and urceolus rotation.
Wherein, inner core 22 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 22 stems is provided with first opening 2503; The side of inner core 22 afterbodys is provided with a plurality of second openings 2504, its all be positioned at the equidistant same vertical section of the tail end of inner core 22 on.
Feeding unit 21 is the feed pipe 2101 that is communicated with first opening 2503; The bottom sealing of feed pipe 2101, the top is provided with opening for feed 2102; Be provided with the baffle plate 2103 that is obliquely installed, point to first opening 2503 in the feed pipe 2101; The below of the sidewall of feed pipe 2101, first opening 2503 is provided with the 5th opening 2502, the five openings 2502 and connects first gas pipeline 2501 that leads to combustion unit.
Combustion gas-flue gas loop structure 25 comprises first gas pipeline 2501, the 5th opening 2502, first opening 2503, second opening 2504, the 3rd opening 2505, the 4th opening 2506, second gas pipeline 2507.
Roasting kiln 27 comprises gitter brick 2701, the inlet mouth 2702 that is positioned at roasting kiln 27 belows that is positioned at roasting kiln, the air outlet 2703 that is positioned at roasting kiln 27 tops.The inlet mouth 2702 of roasting kiln 27 is connected with the other end of second gas pipeline 2507, is provided with gas pump 28 in the middle of second gas pipeline 2507.The other end of first gas pipeline 2501 is connected to the air outlet 2703 of roasting kiln.
The workflow of this charing system is following:
1, powdered carbon raw material.Carbon granule through flotation gets into feed pipe 2101 as the powdered carbon raw material from opening for feed 2102; After being stopped by baffle plate 2103; Get into inner core 22 from first opening 2503, under the driving of drive unit, inner core 22 and urceolus 23 rotations; The plate of raising that drive is positioned on inner core 22 and urceolus 23 inwalls rotates, and the direction of powdered carbon raw material to second opening 2504 pushed.In the process that the powdered carbon raw material moves ahead, contact with heating unit that is positioned at inner core 22 26 or high-temperature flue gas, and be heated.The powdered carbon raw material falls into urceolus 23 from second opening 2504, and the plate of raising that is rotated pushes to the direction of the 3rd opening 2505.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 24 that is enclosed within outside the urceolus 23 from the 3rd opening 2505, and leaves charring furnace through discharge pipe 2401.
2, combustion gas-flue gas.Combustion gas-flue gas is that following current contacts with the powdered carbon raw material in the present embodiment.Under the heat effect of heating unit 26; Powdered carbon raw material in the inner core 22 produces inflammable gas under heat effect; This inflammable gas gets into urceolus 23 along the flow direction of powdered carbon raw material through second opening 2504; And getting into roasting kilns 27 through the 3rd opening 2505, the 4th opening 2506, second gas pipeline 2507, the burning back produces the pyritous flue gas in roasting kiln 27.High-temperature flue gas gets into inner cores 22 through first gas pipeline 2501, the 5th opening 2502, first opening 2503.Powdered carbon raw material in the inner core 22 produces inflammable gas under the heat effect of high-temperature flue gas, this inflammable gas repeats above-mentioned flow process.
Shown in Figure 4 is the activation system of present embodiment, and it comprises activation furnace 31, nitrogen supply (NS) device 32, first retrieving arrangement 33, second retrieving arrangement 34.
Wherein, activation furnace 31 is an encloses container, is provided with material container such as nickel crucible 3101, heating unit such as many electrical heating wires 3102 in it; Its top is provided with vertical gas pipeline 3103, and gas pipeline 3103 vertical outlets are first air outlet, and this place, first air outlet is provided with explosion trap 3104, and when the violent expansion of the gas in the activation furnace surpassed certain limit, explosion trap 3104 was opened automatically.The below of the sidewall of gas pipeline 3103, first air outlet is provided with nitrogen inlet mouth 3105.The body of heater of activation furnace 31 is provided with second air outlet 3106; Place, second air outlet 3106 is connected with second connecting tube 3107; Activation furnace 31 is the intermittent type activation furnace, and its side is provided with the end cap 3108 that can open, and end cap is provided with the water cooled pipeline (not shown) that is used for logical water coolant.Activation furnace 31 is provided with and is used to show the tensimeter 3109 in the stove.Activation furnace 31 also comprises the heating control cabinet 3110 that is used to control electrical heating wire 3102, to realize accurately controlling Heating temperature and heat-up time.
Nitrogen supply (NS) device 32 is connected with the nitrogen inlet mouth 3105 of activation furnace 31 through first connecting tube 3201;
First retrieving arrangement 33 is an encloses container, is provided with absorption liquid 3306, the second connecting tubes 3107 in it and injects in first retrieving arrangement 33, and extend to below the liquid level of absorption liquid 3306; The top of absorption liquid 3306 liquid levels, the top of first retrieving arrangement 33 are provided with air outlet 3301.The bottom of first retrieving arrangement 33 is provided with first recovery channel 3303 that reclaims liquid outlet 3302 and be connected in this recovery liquid outlet 3302, and this first recovery channel 3303 is provided with valve.First retrieving arrangement 33 is provided with the water level gauge 3304 that is used for water level in the display unit, and the pressure regulator valve 3305 that is used to regulate activation furnace 31 internal pressures.
Second retrieving arrangement 34 is an encloses container, and it is provided with opening for feed 3401, material reclaims mouth 3402, venting port 3403, filtering net 3405.Opening for feed 3401 is located at the sidewall of second retrieving arrangement 34, the below of filtering net 3405, and is connected with the air outlet 3301 of first retrieving arrangement 33 through the 3rd connecting tube 3404; Material reclaims the bottom that mouth 3402 is positioned at second retrieving arrangement 34; Venting port 3403 is arranged at the top of second retrieving arrangement 34, the top of filtering net 3405.Venting port 3403 is externally connected with gas exhaust duct 3408.The length of the 3rd connecting tube 3404 is longer, and the gas in such first retrieving arrangement 33 has the adequate time cooling in the process through the 3rd connecting tube 3404.Second recovery channel 3406 is connected in material and reclaims mouth 3402, and this second recovery channel 3406 is provided with valve.
Embodiment 2
Other part of present embodiment is similar with embodiment 1, and its difference is that floatation system comprises two flotation units, and second flotation unit promptly is set after first flotation unit.This second flotation unit comprises: distribution device 12 ', the cylindrical shell 13 ' that vertically is provided with, the diffusing device of air 14 ' of the bucket-shaped reflection of awl, multilayer flotation plate 15 ', air feeder 16 ', physical separation means such as UW tripping device 18 ', screen plate 19 ', overflow collection section 1301 ', tail ash collection section 1305 '.
The cylindrical shell 13 ' that vertically is provided with can be divided into three parts, is followed successively by from top to bottom: the first flotation section 1302 ', divergent cone section 1303 ', the second flotation section 1304 '.Wherein, the first flotation section 1302 ' is thinner, is provided with one deck flotation plate 15 ' in it.The second flotation section 1304 ' is thicker, is provided with loose device of air 14 ' and one deck flotation plate 15 ' in it.Divergent cone section 1303 ' is positioned between the first flotation section 1302 ' and the second flotation section 1304 ', is the bucket-shaped transitional region of the awl of point upward.
Overflow collection section 1301 ' to first flotation section 1302 ' is thick, be enclosed within outside the first flotation section 1302 ', and the top of the first flotation section 1302 ' is positioned between the top and bottom of overflow collection section 1301 '; In addition, the bottom of overflow collection section 1301 ' is provided with discharge port 1309 '.
Tail ash collection section 1305 ' is that the awl of pointed end is bucket-shaped, and its bottom tip place is provided with tail ash outlet 1306 '.Between the second flotation section 1304 ' and tail ash collection section 1305 ', be provided with screen plate 19 '.
The device of air 14 ' that looses is that the awl of point upward is bucket-shaped, and its awl bucket angle is 120 °, and its conical surface is provided with a plurality of pores 1401 '; It is positioned at the second flotation section 1304 ', and is positioned at 1305 ' top, the bucket-shaped tail ash of awl collection section.The device of air 14 ' that looses is provided with a plurality of ultrasonic separation means 18 '.
Multilayer (for example two-layer) the flotation plate 15 ' that is provided with at interval lays respectively in the first flotation section 1302 ' and the second flotation section 1304 ', and wherein the flotation plate 15 ' of bottom is positioned at the top of the bucket-shaped diffusing device of air 14 ' of awl.
Distribution device 12 ' is positioned at 1301 ' top, overflow collection section, is provided with the container of many (for example 8) distributing pipelines 1201 ' for the bottom.The end of distributing pipelines 1201 ' is positioned within the second flotation section 1304 ', bores between bucket-shaped diffusing device of air 14 ' and the bottom flotation plate 15 '.
The discharge port 1309 of first flotation unit connects discharge pipe 1701, and the other end of this discharge pipe 1701 leads to the distribution device 12 ' of second flotation unit.
Air feeder 16 ' connects first gas pipeline 1601 ' and second gas pipeline 1602 '; Wherein, first gas pipeline 1601 ' is communicated with a plurality of pores 1401 ' of awl on the bucket-shaped diffusing device of air 14 ', and second gas pipeline 1602 ' leads to distribution device 12 '.
The workflow of this floatation system can be divided into two stages: fs in first flotation unit and the subordinate phase in second flotation unit.
Wherein the fs is: the powdered coal ash slurry in storage device 11 adds flotation agent, forms mixture.This mixture gets into distribution device 12 through the charging line 1102 that is positioned at storage device 11 bottoms.The powdered coal ash in the distribution device 12 and the mixture of flotation agent get into cylindrical shell through many distributing pipelines 1201 that are positioned at distribution device 12 bottoms.Air feeder 16 is through pore 1401 air feed in cylindrical shell on the device of air 14 that looses; Carbon granule adheres to bubble under the effect of flotation agent; And scatter floating and move upward with turbulent state; Through the hole on each layer flotation plate 15, fall on the flotation plate 15 of the superiors smoothly, realize the flotation of carbon granule.The ash content of flotability difference is fallen tail ash collection section 1305 then not through 15 flotation of flotation plate.The carbon granule that floatingly selects is collected in the overflow collection section 1301, and gets in the distribution device 12 ' of second flotation unit subordinate phase that has begun flotation through discharge pipe 1701 from discharge port 1309.
Subordinate phase be that the carbon granule that floatingly selects with the fs is as the further flotation of raw material, to make the higher particle of carbon content.Its flow process and fs are similar, are specially: the particle in the distribution device 12 ' gets into cylindrical shell through many distributing pipelines 1201 ' that are positioned at distribution device 12 ' bottom.Air feeder 16 ' is through the pore 1401 ' air feed in cylindrical shell on the device of air 14 ' that looses; Carbon granule adheres to bubble under the effect of flotation agent; And scatter floating and move upward with turbulent state; Through the hole on each layer flotation plate 15 ', fall on the flotation plate 15 ' of the superiors smoothly, realize the flotation of carbon granule.The carbon granule that floatingly selects is collected in the overflow collection section 1301 '.The ash content of flotability difference is fallen tail ash collection section 1305 ' then not through the 15 ' flotation of flotation plate, and discharges from tail ash outlet 1306 '.
Though the utility model discloses as above with preferred embodiment, be not in order to limit the scope that the utility model is implemented.Any those of ordinary skill in the art, in the invention scope that does not break away from the utility model, when can doing a little improvement, promptly every equal improvement of doing according to the utility model, the invention scope that should be the utility model is contained.
Claims (10)
1. system by the fly-ash Preparation gac; It comprises floatation system and charing system; It is characterized in that; Said floatation system comprises at least one flotation unit, and said flotation unit comprises the cylindrical shell of vertical setting, is positioned at the overflow collection section and the tail ash collection section that is positioned at this cylindrical shell bottom at this cylindrical shell top; Said overflow collection section is provided with discharge port; Said tail ash collection section is provided with the outlet of tail ash;
Said charing system 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 said inner core, drives the drive unit of said inner core and the rotation of said urceolus, and described urceolus is enclosed within outside the described inner core;
Combustion gas-flue gas loop structure, it comprise a plurality of openings of said charring furnace and be connected in said charring furnace and said combustion unit between gas pipeline.
2. the system of claim 1 is characterized in that, said flotation unit further comprises:
Be positioned at the intravital diffusing device of air of said tube, the surface of this diffusing device of air is provided with a plurality of pores, and these a plurality of pores are set to become different angles with horizontal plane separately;
The multilayer flotation plate that be positioned at said cylindrical shell, is provided with at interval, wherein bottom flotation plate is positioned at the top of said diffusing device of air;
Be positioned at the distribution device of top, said overflow collection section, said distribution device is the container that bottom or bottom are provided with many distributing pipelines, and the end of said distributing pipelines is between said diffusing device of air and said bottom flotation plate;
Air feeder, this air feeder is communicated with a plurality of pores on the said diffusing device of air through first gas pipeline.
3. system as claimed in claim 2 is characterized in that, at least one said flotation unit, the awl that said diffusing device of air is a point upward is bucket-shaped, and said a plurality of pores are located on its conical surface.
4. system as claimed in claim 2; It is characterized in that; In at least one said flotation unit, said cylindrical shell comprises superposed first thinner flotation section and the second thicker flotation section that is positioned at the bottom, and said overflow collection section is positioned at the outside of the said first flotation section; Be provided with the divergent cone section as transitional region between said first flotation section and the said second flotation section, this divergent cone section is positioned at the top of bottom flotation plate.
5. system as claimed in claim 2 is characterized in that, said floatation system comprises two flotation units, and the discharge port of first flotation unit is connected with discharge pipe, and this discharge pipe leads to second flotation unit.
6. the system of claim 1; It is characterized in that, a plurality of openings of said charring furnace comprise the inner core stem that is positioned at said charring furnace first opening, be positioned at the inner core afterbody of said charring furnace second opening, be positioned at the 3rd opening of the urceolus afterbody of said charring furnace; Said second opening sleeve is within said urceolus.
7. system as claimed in claim 6; It is characterized in that; Said gas pipeline comprise with first gas pipeline of said first open communication, with second gas pipeline of said the 3rd open communication; The other end of said first gas pipeline leads to the inlet mouth or the air outlet of said combustion unit, and the other end of said second gas pipeline leads to the air outlet or the inlet mouth of said combustion unit.
8. the system of claim 1 is characterized in that, said system also comprises activation system, and said activation system is positioned at after the said charing system, and it comprises:
The nitrogen supply (NS) device, it is connected with the nitrogen inlet mouth of activation furnace through first connecting tube;
Activation furnace, it is an encloses container, is provided with heating unit in it; Said activation furnace comprises first air outlet and nitrogen inlet mouth; Described nitrogen inlet mouth place establishes and forms the nitrogen air curtain, and place, described first air outlet is connected with second connecting tube;
First retrieving arrangement, it establishes the encloses container of absorption liquid in being, and said second connecting tube injects in said first retrieving arrangement, and extends to below the liquid level of said absorption liquid; The liquid level top of said absorption liquid is provided with the air outlet.
9. system as claimed in claim 8 is characterized in that the activation furnace of said activation system further comprises second air outlet, and place, described second air outlet is provided with explosion trap, and described nitrogen air curtain is positioned at the inboard of this explosion trap.
10. system as claimed in claim 8 is characterized in that the activation furnace of said activation system is provided with vertical gas pipeline; The vertical outlet of this gas pipeline is set to described second air outlet; The below of the sidewall of this gas pipeline, said second air outlet is provided with described nitrogen inlet mouth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201992932U CN202099061U (en) | 2011-06-14 | 2011-06-14 | System preparing activated carbon by utilizing fly ash and providing with flotation and carbonizing devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201992932U CN202099061U (en) | 2011-06-14 | 2011-06-14 | System preparing activated carbon by utilizing fly ash and providing with flotation and carbonizing devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202099061U true CN202099061U (en) | 2012-01-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201992932U Expired - Fee Related CN202099061U (en) | 2011-06-14 | 2011-06-14 | System preparing activated carbon by utilizing fly ash and providing with flotation and carbonizing devices |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202099061U (en) |
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2011
- 2011-06-14 CN CN2011201992932U patent/CN202099061U/en not_active Expired - Fee Related
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Granted publication date: 20120104 Termination date: 20170614 |