WO1999064539A1 - Four de thermolyse a depoussierage de la sortie du flux gazeux resultant de la thermolyse - Google Patents
Four de thermolyse a depoussierage de la sortie du flux gazeux resultant de la thermolyse Download PDFInfo
- Publication number
- WO1999064539A1 WO1999064539A1 PCT/FR1999/001333 FR9901333W WO9964539A1 WO 1999064539 A1 WO1999064539 A1 WO 1999064539A1 FR 9901333 W FR9901333 W FR 9901333W WO 9964539 A1 WO9964539 A1 WO 9964539A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cavity
- waste
- thermolysis
- outlet
- oven
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J3/00—Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B1/00—Retorts
- C10B1/10—Rotary retorts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B47/00—Destructive distillation of solid carbonaceous materials with indirect heating, e.g. by external combustion
- C10B47/28—Other processes
- C10B47/30—Other processes in rotary ovens or retorts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/30—Pyrolysing
- F23G2201/302—Treating pyrosolids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/30—Pyrolysing
- F23G2201/303—Burning pyrogases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2203/00—Furnace arrangements
- F23G2203/20—Rotary drum furnace
Definitions
- thermolysis furnace with dedusting of the gas flow outlet resulting from thermolysis.
- the present invention relates to thermolysis, in particular of urban and / or industrial waste.
- a waste thermolysis oven comprises an airtight cavity, substantially cylindrical, rotating around its longitudinal axis, and comprising an inlet interface for introducing waste into the cavity and an outlet for gas flow.
- An envelope surrounds the cavity.
- a burner has an inlet connected to the outlet of the cavity and an outlet delivering a combustion gas into the casing.
- thermolysis is relatively easy, even when the original content of the waste has a large variation in pollutants, since the treatment of the pollutants is carried out before use (most often combustion) of carbonaceous solid materials from thermolysis. As a result, thermolysis is better suited to heterogeneous waste than incineration where the treatment of pollutants is carried out after combustion of the waste.
- thermolysis reaction is produced in an air-protected oven at a temperature between 450 ° C and 600 ° C. The choice of this temperature is controlled by the nature of the waste treated. The reaction at these temperatures (cracking) produces gas and carbonaceous solids. This reaction is carried out without pressure in order to avoid stressing the seals on a rotary kiln.
- the gas resulting from the thermolysis is channeled in a pipe and is directed towards the burner which will ensure its combustion. Little by little, the particles of carbonaceous solids will deposit on the periphery of the evacuation sheath until first creating a progressive reduction in the free section of this sheath and finally closing it completely, causing the stop fuel supply to the burner.
- the present invention provides a solution to this problem.
- thermolysis furnace in particular of urban and / or industrial waste, of the type comprising:
- thermolysis an airtight cavity, comprising an inlet interface for introducing waste into said cavity and an outlet for gas flow resulting from thermolysis;
- At least one burner having an inlet connected to the outlet of the gas flow from the cavity and an outlet capable of delivering a combustion gas into the combustion chamber.
- the gas flow outlet from the cavity comprises at least one discharge sheath comprising a first end connected to the cavity and a second end connected to the burner, the sheath being suitable for accommodating a screw without core, capable of at least partially capturing the dust of carbonaceous solids present in the gas flow resulting from the thermolysis and of turning, on command, in order to return the dust thus collected into the cavity of the oven.
- the soulless screw firstly collects the dust of carbonaceous solids, and then ensures the cleaning of the evacuation sheath by returning to the oven cavity, for example at programmed intervals, the dust thus captured.
- the soulless screw comprises helical turns, the width and pitch of which are chosen as a function of an average speed of evacuation of the gas flow resulting from thermolysis to trap at least a portion of the particles present in said gas flow.
- the gas flow outlet from the cavity comprises first and second evacuation ducts each comprising first and second ends, each first end being connected to the cavity, and each second end being connected to a common node whose output is connected to the burner, each evacuation sheath comprising a flap and a soulless screw, suitable for dusting on command the associated sheath, the dust sheath flap being closed while the flap the other sheath being open for the evacuation of thermolysis gases.
- the shutters are closed alternately. Thus, when one of the evacuation ducts is in service, the other is closed to allow the sweeping sequence essential for its cleaning.
- the present invention also relates to an oven whose introduction of waste into the cavity is improved.
- the cavity inlet interface comprises at least first and second inlets
- the waste introduction means comprise first and second introduction channels connected respectively to the first and second inlets of the cavity, press means for compacting and pushing the waste into the first and second introduction channels, and control means suitable for controlling in a staggered manner the compaction and the charging of the waste into the first and second entrances of the cavity, while preserving the sealing of the cavity.
- Such a device also has the advantage of increasing the flow rate of the treated waste without increasing the diameter of the introduction channel and thus without generating any air inlets into the cavity.
- the almost continuous introduction of the waste also makes it possible to supply the burner with a constant gas flow, which avoids the sequential degassing of the waste.
- the two introduction channels are connected to each other by an air purge channel in order to further improve the sealing of the introduction of the waste into the cavity.
- each introduction channel comprises first and second ends, the first end being connected to the associated entry of the cavity and comprising a guillotine closing on command said entry of the cavity, and the second end housing a push mechanism suitable for moving bidirectionally on command in the introduction channel for pushing the waste towards the associated guillotine, and the control means are adapted to synchronously control the movement of the push mechanism and opening / closing of the guillotine.
- each introduction channel comprises a hatch for receiving the waste.
- each introduction channel is substantially parallelepipedal and substantially parallel to the longitudinal axis of the cavity.
- the present invention also relates to a thermolysis oven further comprising a station for recovering carbonaceous solids from the thermolysis cavity, said recovery station comprising an evacuation channel forming a siphon / lock, said evacuation channel comprising a receiving tank connected to the cavity, at the bottom of which carbonaceous solids accumulate in the form of an airtight stopper, and a recovery mechanism capable of driving the carbonaceous solids thus accumulated to a separation and washing.
- the separation and washing station associated with the recovery station comprises a perforated drum capable of turning in a settling and washing tank, in particular in order to deliver a mixture of water and recoverable carbonaceous solids.
- the separation and washing station is also connected to water treatment means comprising a plurality of settling and washing tanks connected to each other and each containing a washing solution of selected concentration, different and decreasing d '' one tank to another, as well as pumps and solenoid valves controlled by salimeters and level switches, in order to purge the washing solution from a tank having a concentration higher than a predetermined threshold in the previous tank, while the level of the washing solution of said tank is kept constant by feeding it with the less concentrated washing solution of the next tank.
- water treatment means comprising a plurality of settling and washing tanks connected to each other and each containing a washing solution of selected concentration, different and decreasing d '' one tank to another, as well as pumps and solenoid valves controlled by salimeters and level switches, in order to purge the washing solution from a tank having a concentration higher than a predetermined threshold in the previous tank, while the level of the washing solution of said tank is kept constant by feeding it with the less concentrated washing solution of the next tank.
- the present invention also relates to a use in a glass oven of carbonaceous solids thus obtained using the oven of the type mentioned above.
- FIG. 1 is an overview of a thermolysis installation according to the invention
- FIG. 3 is a bottom view of the two waste introduction channels according to the invention.
- FIG. 4 is a perspective view of the double outlet of the thermolysis gases according to the invention.
- - Figure 5 is a sectional view of the double gas outlet described with reference to Figure 4;
- - Figure 6 is a view of a soulless screw housed in a sheath for discharging the gas flow resulting from thermolysis according to one inventio;
- FIG. 7 is a curve which illustrates the efficiency of the dust collector according to the invention.
- FIG. 8 is a sectional view of the recovery station and separation of carbonaceous solids from the thermolysis furnace according to the invention.
- a waste thermolysis installation generally comprises a REC waste reception and grinding station, a SEC drying station, a THE thermolysis station and a REP recovery and LAV washing station for materials. carbonaceous solids from the thermolysis station.
- the reception station REC comprises a pit 2 into which the waste to be treated is poured, transported for example by trucks 4.
- the waste is crushed to reduce the volume to be treated to a more uniform size.
- an overhead crane 6 takes the waste contained in the pit 2 to convey it to a crusher 8.
- the meshes of the crusher 8 are for example from 100 to 150 mm to promote transport and heat exchange in the thermolysis process which will be described in more detail below.
- bulky waste (metal bars, piping) is discarded 10.
- the crushed waste from the crusher 8 is discharged into a pit 12.
- a transfer mat 14 conveys the crushed products 12 to the SEC drying station.
- the pit 12 acts as a buffer between the grinder 8 and the transfer belt 14 which ensures a constant supply of a rotary dryer 20 whose role is to remove a large part of the water vapor contained in the products to be treated in order to '' increase their PCI (lower calorific value).
- the waste before entering the dryer, the waste may be sorted magnetically in order to remove the ferrous metals 16. This magnetic sorting can be considered after thermolysis.
- this drying phase can be omitted, the waste then entering directly into the hopper of the thermolysis oven which will be described below.
- the waste is dried in a rotary enclosure 22, by contacting with a flow of hot air 24 coming from the reception station REC.
- This hot air 24 is heated by the passage of a gas / gas type heat exchanger 30 whose heating flow 32 comes from the THE thermolysis station.
- the receiving pit 2 is placed under vacuum, which prevents any propagation of dust and unpleasant odors when the doors are opened during the unloading of the trucks 4.
- a shredder (not shown) of plastic bags can advantageously be provided.
- the separation of the dry products and of the water vapor charged with gas resulting from the drying is then carried out by means of a separator (cyclonic enclosure) 40 capable of separating the solid products from the gaseous products.
- the separator station 40 includes an inlet 42 receiving the waste from the SEC drying station, a first outlet 44 delivering the solid waste and a second outlet 46 delivering the gaseous waste.
- the THE thermolysis station comprises a thermolysis oven comprising an air-tight cavity 50, cylindrical, and preferably rotating around its longitudinal axis.
- the thermolysis oven further comprises an envelope 60 surrounding said cavity 50.
- Waste introduction means 70 receive the waste to be treated from the outlet 44 of the separator station 40. The waste thus received is then compacted and placed in the compacted manner in the cavity, preventing any entry of air into the cavity.
- thermolysis oven is heated by at least one burner 80 having a first inlet 82 receiving the gaseous waste 85 from the outlet 46 of the separator 40, a second inlet 84 receiving the gas flow coming from the outlet 54 of the cavity 50 , and an outlet 86 delivering a gas flow of combustion in the envelope 60 which surrounds the cavity 50.
- This gas flow is said to be combustion insofar as it is intended to bring the waste introduced into said cavity 50 to a selected temperature. thermolysis of said waste.
- the gas flows resulting from drying 85 and from thermolysis 54 are advantageously used as oxidizers of the burner 80, which makes it possible to obtain a substantially autothermal operation.
- the installation is completed by a gas / gas type heat exchanger 90 having, on the secondary, a heated flow going from the second outlet 46 of the separating station 40 to the first inlet 82 of the burner, and on the primary, a heating flow coming from from the outlet 66 of the double jacket 60 of the THE thermolysis oven.
- the combustion chamber containing the burner 80 is advantageously furnished with a refractory.
- the burner 80 is, of the low N0 ⁇ type for example, and capable of ensuring a temperature of 1500 ° C at the flame and 1000 to 1100 ° C at outlet 86.
- the installation according to the invention eliminates any pollution due to dioxins, NO ⁇ and aromatic compounds.
- the gas mixture resulting from thermolysis 54 maintained at a temperature above 300 ° C. (to avoid condensation of the hydrocarbons), can be burned in the burner 80 without prior treatment, insofar as it does not contain no polluting agent.
- a collection system 550 is installed before discharge 560 to the outside.
- This system 550 is for example composed of an activated carbon equipment on which the mercury particles are fixed.
- the Applicant has posed the problem of further improving the installation described with reference to FIG. 1, in particular with regard to the introduction of waste into the cavity in order to improve the throughput of the treated waste.
- the cavity 50 includes first and second inlets 51 and 53 for waste.
- the waste introduction means 70 comprise introduction channels 72 and 74 connected respectively to the inlets 51 and 53 of the cavity.
- the channel 72 has ends 71 and 75 while the channel 74 has ends 73 and 77.
- the end 71 is connected to the inlet 51 of the cavity.
- the end 73 is connected to the input 53.
- a guillotine 76 housed in the channel 72 closes the command 51 of the cavity on command.
- a guillotine 78 housed in channel 74 blocks the entrance on command 53 of the cavity.
- Each channel houses a push-button mechanism 79, 81 (for example of the piston or cylinder type) capable of moving bidirectionally on command in the associated channel to push the waste towards the guillotine closing the associated entry of the cavity.
- Control means are suitable for controlling the movement of the push-button mechanism and the opening / closing of the guillotine of each introduction channel to allow, in an offset manner, the introduction of compacted and sealed bales in the cavity.
- each introduction channel comprises a hatch 85, 87, disposed opposite the hopper 83 for receiving the waste.
- each introduction channel comprises a cylinder 89, 91 perpendicular to the cylinders 79 and 81 to help compact the waste in the form of sealed bales.
- each introduction channel is substantially parallelepipedal and substantially parallel to the longitudinal axis of the cavity.
- the routing of the waste to be treated in the reception hopper 83 comprises, for example, a first unidirectional conveyor 95 discharging the waste onto a second bidirectional conveyor 97 arranged to discharge the waste into the respective flap 85, 87 of the introduction channels.
- the two introduction channels are connected to each other by a channel 88 suitable for carrying out an air purge, in order to further improve the sealing of the introduction of the waste into the cavity.
- Waste 96 is raw (not compacted) when the piston is in the rear position while they are compacted when the piston is in the front position.
- the Applicant has also posed the problem of solving the accumulation of fine particles in the gas evacuation sheath resulting from thermolysis.
- thermology With reference to FIGS. 4 to 6, provision is made to house a dust collector in the duct (s) for discharging the gas flow resulting from thermology.
- the dust collector consists of a soulless screw 117 inserted in the sheath GA for evacuating the gas flow.
- the outside diameter of the screw is substantially equal to the inside diameter of the sheath, leaving a slight clearance of a few millimeters. For example, a clearance of 4mm in total is perfectly suited for a 20 cm diameter sheath.
- the soulless screw 117 is originally formed by a flat iron of rectangular section which has been given a helical shape according to a certain pitch. The largest dimension of the section of the flat iron forms an angle of 90 ° relative to the internal generator of the evacuation sheath.
- the soulless screw 117 occupies an annular space. It leaves the central area of the GA duct free. The width of the turns and the pitch of the screw are calculated according to the dust to be collected and the qualitative analysis of the gas flow configuration.
- the soulless screw is reinforced longitudinally, in particular near the drive motor MO, in order to avoid twisting of the screw during its rotation.
- the helical geometry of the screw induces a tangential current in rotation around the axis of the evacuation duct.
- the geometry of the dust collector does not force the gas to acquire a tangential flow.
- This flow configuration is stable and constitutes a established flow pattern.
- the shear stresses are a function of the density of the fluid and the kinematic viscosity of the same fluid.
- the established helical flow causes a disengagement of the dust under the effect of centrifugal force. These particles are trapped by the screw 117 forming a dust collector.
- the efficiency of the dust collector is a function of the class of particles according to the curve described with reference to FIG. 7.
- the advantage of the dust collector according to the invention lies in its effectiveness in trapping dust with a particle size greater than 2 ⁇ .
- the dust flow less than 2 ⁇ is very low and has no effect on the operation of the installation downstream of the screw depending on the direction of propagation of the gas flow resulting from the FI thermolysis.
- the dust removal equipment is doubled.
- a first evacuation sheath is fitted on the rear box 49 of the oven in order to ensure the flow of gas.
- an automatic or manual control rotates the helical screw which occupies the interior of the evacuation sheath via a drive mechanism MO in order to bring back the trapped dust in the oven in the direction F2, contrary to the direction of propagation of the gases FI.
- This operation is preceded by closing the pipeline using a motorized shutter.
- the control of these two operations can be automated by placing them under the control of a differential pressure switch measuring the variation in the pressure drop after dedusting.
- the start of the sweeping operation in the first evacuation duct is preceded by the commissioning of the second evacuation duct parallel to the first, by imperative ordering the opening of the motorized shutter equipping this second sheath.
- the dust trapping sequence can then be established in the second sheath, until reaching the reference value which will trigger a new sweeping sequence identical to the previous one.
- this outlet 54 comprises at least two ducts d evacuation 102 and 104.
- the evacuation sheath 102 comprises ends 103 and 105, while the evacuation sheath 104 comprises ends 107 and 109.
- the ends 103 and 107 are coupled to the fixed part (on the front face) of the rear box 49 oven 50 containing the MSC carbonaceous solids from thermolysis.
- the ends 105 and 109 are connected to a common node 110, the outlet 112 of which is connected to the inlet 84 of the burner 80.
- the ends 103 and 107 of the sheaths GA are coupled to the upper part (on the top) of the rear box 49 of the oven.
- Each evacuation sheath includes a flap 114 and an individual sheath dedusting mechanism 116.
- the flap 114 of the dust sheath is placed in the closed position, while the flap of the other sheath is put in the open position to the evacuation of the thermolysis gases during the dedusting of the sheath to be dedusted.
- the dust removal mechanism 116 comprises a soulless screw 117 housed inside the sheath.
- the dedusting mechanism comprises a blowing mechanism using a neutral gas or a mechanism capable of generating a vibratory shock on the sheath to be dusted.
- the invention thus brings into play two gas outlets and two dust separation systems, one on each exhaust duct.
- the length of the horizontal pipe is several meters, for example 6, and the length of the coreless screw is several meters, for example 3.
- the soulless screw generates a spiral helical flow and plays a centrifugal role.
- the spiral flow shaped by the screw is maintained over a good part of the rectilinear section of the pipe devoid of the screw, and continues to play its role of centrifugation despite the absence of the screw.
- the overall efficiency of the dust collector is little affected by the elongation of the screw.
- extending the screw all along the pipe would only serve, in the most probable hypothesis, to fully recover the particles whose size is between 1.5 ⁇ and 2.5 ⁇ , which represent only less 2% of the total mass of incident particles (Figure 7).
- these are likely to be largely recovered by the vortex flow which is maintained along the straight length, downstream of the screw.
- the radius of the evacuation sheath can be equal to 0.1m and the pitch of the screw can be of the order of 0.06m. Alternatively, in the case of a higher waste flow, the radius of the evacuation sheath can be 0.185m and the pitch can be 0.12m.
- thermolysis installation comprises a recovery station REP for the carbonaceous solid materials MSC coming from the cavity 50, after thermolysis of the waste.
- the recovery station REP comprises an evacuation channel 200 forming a siphon / lock and connected to the fixed part of the bottom of the outlet of the oven 49.
- the evacuation channel 200 comprises a receiving tank 202, inclined from bottom to top and at the bottom of which the carbonaceous solid matter MSC accumulates in the form of an airtight stopper.
- a recovery mechanism 204 leads, from bottom to top, the carbonaceous solid materials MSC thus accumulated to another separation station SP and washing to separate the inert materials IN and the mixture of water and materials carbonaceous solids KK.
- the discharge channel 200 comprises a perforated drum 206 suitable for rotating in a settling tank 208, the outlet 210 of which is connected to the LAV water treatment station which will be described in more detail below.
- This outlet 210 delivers the mixture of water and carbonaceous solids KK, the recovery of which will be described below.
- the fixed part of the bottom of the outlet of the oven 49 ( Figures 4,5 and 8) comprises for example two valves / guillotines actuated by a pneumatic or mechanical hydraulic cylinder ensuring the sealing of the oven at the outlet of the MSC product.
- the solid materials MSC leaving the thermolysis station THE are, according to the invention, washed and separated in the device REP described with reference to FIG. 8, in inert IN on one side and mixed with water and KK carbon solids on the other side.
- the mixture of water and KK carbonaceous solids, coming from outlet 210, is recovered in a series of trays 300, to wash the KK materials and to rid them of the pollutants fixed on the carbon particles in the form of chloride or sulfate.
- the fine carbon particles are taken up and transported wet through a peristaltic pump 400 to a belt dryer 402 thus eliminating a large part of the water contained in the carbonaceous solids KK from thermolysis.
- the drips 404 of the belt dryer 402 are then sent back to the washing chain for carbon solids.
- the PC carbon part is directed to a micron dryer 500 self-supplied by the gases 510 originating from the heat exchangers 90 and 30 mentioned above.
- the carbonaceous solids KK are stored 600 and transported 602 to a chosen place of use.
- the washing waters of carbonaceous solids are treated for example by mechanical compression of steam, the operation of which is as follows.
- the water from the primary washing tank 302 is directed to an evaporator 304 when their dissolved salt concentration reaches a reference value. They are maintained in temperature by the permanent water circuit of the tank primary, the latter being heated by the flow of KK carbonaceous solids from the thermolysis furnace.
- Pumps and solenoid valves controlled by salimeters and water contactors are provided to purge the washing solution from a tank having a concentration higher than that of the previous tank, while the level of the washing solution of said tank is kept constant in feeding it with the less concentrated washing solution from the next tank.
- the water vapor present in the evaporator 304 is continuously extracted by a compressor 306 and directed to a condenser 308.
- the temperature of the condenser 308 is permanently maintained below the dew point of the water vapor at pressure setpoint of the condenser by circulation of water from the last rinse tank 305.
- the condensates to be recovered are periodically recycled to the last rinse tank 305 whose concentration is lower than the previous tank.
- the salts and / or brines 310 are periodically extracted from one evaporator 304.
- the extraction is carried out by gravity through an airlock in the case of brine or by a screw placed in the airlock in the case of crystallized salt.
- One of the advantages of the present invention is also that it does not consume water 320 since, after treatment, the water generated by the system, whether after drying or after condensation by evaporation, is recycled. Therefore, the amount of water used in the process being excess, decompression is necessary. This operation being carried out after the water treatment, the volumes of water discharged to the network are therefore non-polluting.
- the KK carbonaceous solids resulting from thermolysis thus treated and dried are liable to become a recoverable and recoverable fuel, with high calorific value.
- These carbonaceous solids can be stored and transported to a place of use which can be of several types. For example, a cyclone hearth with molten ash allowing vitrification of the ashes and trapping the heavy metals contained in the carbon, or fluidized bed.
- the quality of the products obtained depends essentially on the choice of control / command means, as well as their location in the thermolysis chain.
- control / command means are (for the combustion chamber) the following elements:
- a very low temperature contactor in the combustion gases (for example below 850 ° C) to activate a safety sequence corresponding to the opening of the external fuel burner supply to maintain the combustion at a level compliant with the legislation, that is to say for example 850 ° C;
- thermolysis oven a very high temperature contactor in the combustion gases (for example higher than 1250 ° C) which initiates a safety sequence which consists in stopping the charging of waste into the thermolysis oven.
- This safety sequence also corresponds to the shutdown of the external fuel burner supply and the opening of a gas cooling air duct;
- thermolysis furnace The control / operating members of the thermolysis furnace are the following:
- the security process is characterized by the following steps:
- the regulation installation also includes three cylinder skin temperature sensors placed on the different sections of the cylinder as well as smoke temperature sensors leaving the oven, carbonaceous solids temperature sensors leaving the oven and sensors pressure inside the oven.
- Thermolysis eliminates heavy smoke treatment devices. It presents a real interest compared to incineration by its simplicity of implementation and the savings which it allows to make in comparison with other installations of the same power.
- the dedusting system (soulless screw) according to the invention can be applied to any pipe for transporting gases loaded with solid particles.
- the grub screw mainly applies in cases where the transport speeds are low (less than 8 m / s) and / or the gas temperatures are high.
- dedusting system can be considered either as a replacement or as a supplement, upstream of conventional filtration systems (ballistic filters, bag filters, cyclones, etc.).
- the present invention finds other applications than the thermolysis of urban / industrial waste such as the treatment of biomass or the thermal resorption of polluted soil.
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- Processing Of Solid Wastes (AREA)
- Enzymes And Modification Thereof (AREA)
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- Gasification And Melting Of Waste (AREA)
- Treatment Of Sludge (AREA)
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Abstract
Description
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Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR9910988-3A BR9910988A (pt) | 1998-06-08 | 1999-06-07 | Forno de termólise, aplicação de um parafuso sem alma e utilização de matérias sólidas carbonadas |
AU40461/99A AU743972B2 (en) | 1998-06-08 | 1999-06-07 | Pyrolytic oven with dust extraction of the gas stream output resulting from pyrolysis |
AT99923680T ATE236233T1 (de) | 1998-06-08 | 1999-06-07 | Thermolyseofen mit entstaubung des thermolysegasausgangs |
EP99923680A EP1093506B1 (fr) | 1998-06-08 | 1999-06-07 | Four de thermolyse a depoussierage de la sortie du flux gazeux resultant de la thermolyse |
PL344871A PL198508B1 (pl) | 1998-06-08 | 1999-06-07 | Piec do termolizy odpadów miejskich, przemysłowych i mieszanych |
CA002334638A CA2334638C (fr) | 1998-06-08 | 1999-06-07 | Four de thermolyse a depoussierage de la sortie du flux gazeux resultant de la thermolyse |
DE69906529T DE69906529T2 (de) | 1998-06-08 | 1999-06-07 | Thermolyseofen mit entstaubung des thermolysegasausgangs |
NZ508718A NZ508718A (en) | 1998-06-08 | 1999-06-07 | Pyrolytic oven with dust extraction of the gas stream output resulting from pyrolysis |
JP2000553531A JP4327358B2 (ja) | 1998-06-08 | 1999-06-07 | 熱分解に起因する気体流出力の埃抽出を伴う熱分解炉 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9807177A FR2779441B1 (fr) | 1998-06-08 | 1998-06-08 | Four de thermolyse a double entree de dechets |
FR98/07177 | 1998-06-08 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999064539A1 true WO1999064539A1 (fr) | 1999-12-16 |
Family
ID=9527130
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1999/001333 WO1999064539A1 (fr) | 1998-06-08 | 1999-06-07 | Four de thermolyse a depoussierage de la sortie du flux gazeux resultant de la thermolyse |
Country Status (15)
Country | Link |
---|---|
EP (1) | EP1093506B1 (fr) |
JP (1) | JP4327358B2 (fr) |
KR (1) | KR100628290B1 (fr) |
AT (1) | ATE236233T1 (fr) |
AU (1) | AU743972B2 (fr) |
BR (1) | BR9910988A (fr) |
CA (1) | CA2334638C (fr) |
CZ (1) | CZ302188B6 (fr) |
DE (1) | DE69906529T2 (fr) |
ES (1) | ES2196807T3 (fr) |
FR (1) | FR2779441B1 (fr) |
NZ (1) | NZ508718A (fr) |
PL (1) | PL198508B1 (fr) |
PT (1) | PT1093506E (fr) |
WO (1) | WO1999064539A1 (fr) |
Cited By (1)
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CN114307851A (zh) * | 2021-12-15 | 2022-04-12 | 青岛伊克斯达智能装备有限公司 | 螺旋进料装置及热裂解设备 |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2937330B1 (fr) * | 2008-10-20 | 2010-11-19 | Inst Francais Du Petrole | Dispositif et procede de thermolyse d'une charge carbonee |
WO2010052232A2 (fr) * | 2008-11-04 | 2010-05-14 | Sterecycle Ltd | Procédé de traitement de matériaux dans une cuve |
ES2362781B2 (es) * | 2009-12-30 | 2012-09-28 | Pirorec, S.L | Procedimiento e instalación para el reciclado íntegro mediante despolimerización. |
PL237169B1 (pl) * | 2017-08-30 | 2021-03-22 | Filen Spolka Z Ograniczona Odpowiedzialnoscia | Zgazowarka wysokociśnieniowa i sposób sterowania jej pracą |
PL71396Y1 (pl) * | 2018-03-19 | 2020-05-18 | Akademia Gorniczo Hutnicza Im Stanislawa Staszica W Krakowie | Urządzenie do podawania materiału do reaktora pirolitycznego |
CN108673106A (zh) * | 2018-06-28 | 2018-10-19 | 石家庄绿色再生资源有限公司 | 洗衣机拆解装置 |
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JPS555715A (en) * | 1978-06-28 | 1980-01-16 | Takeshi Nishimura | Method and apparatus for separating and discharging exhaust gas and fine dust or the like |
WO1981003629A1 (fr) * | 1980-06-17 | 1981-12-24 | G Lejeune | Procede et dispositif de traitement de produits humides |
JPS578427A (en) * | 1980-06-20 | 1982-01-16 | Babcock Hitachi Kk | Screw type cleaning device for aperture part for measurement |
DE3332458A1 (de) * | 1983-09-08 | 1985-03-28 | Kiener-Pyrolyse Gesellschaft für thermische Abfallverwertung mbH, 7000 Stuttgart | Vorrichtung zum austragen von verschwelungsrueckstaenden aus einer pyrolyseanlage |
DE3333898A1 (de) * | 1983-09-20 | 1985-04-11 | Birlauf GmbH, 7860 Schopfheim | Verfahren zum reinigen von abluft |
EP0446930A1 (fr) * | 1990-03-14 | 1991-09-18 | Wayne Technologies | Système de conversion pyrolytique |
US5167772A (en) * | 1990-05-21 | 1992-12-01 | Parker Sr Thomas H | Apparatus for pyrolysis of tires and waste |
DE4218851A1 (de) * | 1992-06-09 | 1993-12-16 | Paul Dr Ing Schmidt | Zyklonabscheider |
DE19700655C1 (de) * | 1997-01-10 | 1998-04-02 | Siemens Ag | Transportvorrichtung für Abfall und Verfahren zum Transport von Abfall |
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CA1327948C (fr) * | 1988-06-02 | 1994-03-22 | Willem Johannes Christian Prinsloo | Separateur a tube tourbillon |
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JPH0465485A (ja) * | 1990-07-05 | 1992-03-02 | Nirai Kk | プラスチック油化再生装置 |
DE4024303C1 (en) * | 1990-07-17 | 1991-11-14 | Thermoselect Ag, Vaduz, Li | Carburation of carbonaceous materials - by pyrolytic decomposition, putting impurities through low viscosity bath made of old molten glass |
DE4026245A1 (de) * | 1990-08-18 | 1992-02-20 | Hpm Technocommerz Technologie | Verfahren zur thermischen behandlung von abfaellen und reststoffen |
JPH08104880A (ja) * | 1994-09-12 | 1996-04-23 | Seisei Kogyo Kk | 刈り芝の炭化処理方法とその処理装置 |
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- 1999-06-07 ES ES99923680T patent/ES2196807T3/es not_active Expired - Lifetime
- 1999-06-07 CZ CZ20004571A patent/CZ302188B6/cs not_active IP Right Cessation
- 1999-06-07 WO PCT/FR1999/001333 patent/WO1999064539A1/fr active IP Right Grant
- 1999-06-07 NZ NZ508718A patent/NZ508718A/xx unknown
- 1999-06-07 DE DE69906529T patent/DE69906529T2/de not_active Expired - Lifetime
- 1999-06-07 PT PT99923680T patent/PT1093506E/pt unknown
- 1999-06-07 PL PL344871A patent/PL198508B1/pl unknown
- 1999-06-07 JP JP2000553531A patent/JP4327358B2/ja not_active Expired - Lifetime
- 1999-06-07 AT AT99923680T patent/ATE236233T1/de active
- 1999-06-07 AU AU40461/99A patent/AU743972B2/en not_active Ceased
- 1999-06-07 BR BR9910988-3A patent/BR9910988A/pt not_active IP Right Cessation
- 1999-06-07 KR KR1020007013878A patent/KR100628290B1/ko not_active IP Right Cessation
- 1999-06-07 CA CA002334638A patent/CA2334638C/fr not_active Expired - Lifetime
- 1999-06-07 EP EP99923680A patent/EP1093506B1/fr not_active Expired - Lifetime
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JPS555715A (en) * | 1978-06-28 | 1980-01-16 | Takeshi Nishimura | Method and apparatus for separating and discharging exhaust gas and fine dust or the like |
WO1981003629A1 (fr) * | 1980-06-17 | 1981-12-24 | G Lejeune | Procede et dispositif de traitement de produits humides |
JPS578427A (en) * | 1980-06-20 | 1982-01-16 | Babcock Hitachi Kk | Screw type cleaning device for aperture part for measurement |
DE3332458A1 (de) * | 1983-09-08 | 1985-03-28 | Kiener-Pyrolyse Gesellschaft für thermische Abfallverwertung mbH, 7000 Stuttgart | Vorrichtung zum austragen von verschwelungsrueckstaenden aus einer pyrolyseanlage |
DE3333898A1 (de) * | 1983-09-20 | 1985-04-11 | Birlauf GmbH, 7860 Schopfheim | Verfahren zum reinigen von abluft |
EP0446930A1 (fr) * | 1990-03-14 | 1991-09-18 | Wayne Technologies | Système de conversion pyrolytique |
US5167772A (en) * | 1990-05-21 | 1992-12-01 | Parker Sr Thomas H | Apparatus for pyrolysis of tires and waste |
DE4218851A1 (de) * | 1992-06-09 | 1993-12-16 | Paul Dr Ing Schmidt | Zyklonabscheider |
DE19700655C1 (de) * | 1997-01-10 | 1998-04-02 | Siemens Ag | Transportvorrichtung für Abfall und Verfahren zum Transport von Abfall |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114307851A (zh) * | 2021-12-15 | 2022-04-12 | 青岛伊克斯达智能装备有限公司 | 螺旋进料装置及热裂解设备 |
Also Published As
Publication number | Publication date |
---|---|
ATE236233T1 (de) | 2003-04-15 |
PL344871A1 (en) | 2001-11-19 |
AU4046199A (en) | 1999-12-30 |
FR2779441A1 (fr) | 1999-12-10 |
JP2002517599A (ja) | 2002-06-18 |
JP4327358B2 (ja) | 2009-09-09 |
EP1093506A1 (fr) | 2001-04-25 |
KR20010071432A (ko) | 2001-07-28 |
KR100628290B1 (ko) | 2006-09-27 |
CZ302188B6 (cs) | 2010-12-08 |
CA2334638C (fr) | 2009-08-18 |
CZ20004571A3 (en) | 2001-05-16 |
FR2779441B1 (fr) | 2000-08-11 |
PT1093506E (pt) | 2003-07-31 |
EP1093506B1 (fr) | 2003-04-02 |
DE69906529T2 (de) | 2004-01-15 |
BR9910988A (pt) | 2001-02-13 |
DE69906529D1 (de) | 2003-05-08 |
NZ508718A (en) | 2002-10-25 |
CA2334638A1 (fr) | 1999-12-16 |
PL198508B1 (pl) | 2008-06-30 |
ES2196807T3 (es) | 2003-12-16 |
AU743972B2 (en) | 2002-02-14 |
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