EP0692677B1 - Procédé et installation de thermolyse de déchets - Google Patents
Procédé et installation de thermolyse de déchets Download PDFInfo
- Publication number
- EP0692677B1 EP0692677B1 EP95401503A EP95401503A EP0692677B1 EP 0692677 B1 EP0692677 B1 EP 0692677B1 EP 95401503 A EP95401503 A EP 95401503A EP 95401503 A EP95401503 A EP 95401503A EP 0692677 B1 EP0692677 B1 EP 0692677B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- thermolysis
- solids
- treatment
- cyclone
- carbon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002699 waste material Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000001149 thermolysis Methods 0.000 title claims description 56
- 238000009434 installation Methods 0.000 title description 11
- 239000007787 solid Substances 0.000 claims abstract description 79
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 12
- 239000011707 mineral Substances 0.000 claims abstract description 12
- 238000005406 washing Methods 0.000 claims abstract description 9
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 238000004064 recycling Methods 0.000 claims abstract description 4
- 125000001309 chloro group Chemical class Cl* 0.000 claims abstract 2
- 238000002485 combustion reaction Methods 0.000 claims description 45
- 239000007789 gas Substances 0.000 claims description 43
- 238000011084 recovery Methods 0.000 claims description 21
- 239000004449 solid propellant Substances 0.000 claims description 14
- 239000000446 fuel Substances 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- 239000003517 fume Substances 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims 3
- 239000000126 substance Substances 0.000 claims 2
- 239000004411 aluminium Substances 0.000 claims 1
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 12
- 238000000197 pyrolysis Methods 0.000 abstract description 8
- 238000000746 purification Methods 0.000 abstract description 5
- 238000007669 thermal treatment Methods 0.000 abstract description 3
- 239000002956 ash Substances 0.000 description 21
- 239000003344 environmental pollutant Substances 0.000 description 12
- 231100000719 pollutant Toxicity 0.000 description 12
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- 239000000428 dust Substances 0.000 description 6
- 235000002918 Fraxinus excelsior Nutrition 0.000 description 5
- 241000861223 Issus Species 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 239000002253 acid Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000010791 domestic waste Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005524 ceramic coating Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 150000001804 chlorine Chemical class 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000011403 purification operation Methods 0.000 description 1
- 239000011214 refractory ceramic Substances 0.000 description 1
- 239000008237 rinsing water Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/04—General arrangement of separating plant, e.g. flow sheets specially adapted for furnace residues, smeltings, or foundry slags
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
- F23G5/0273—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage using indirect heating
-
- 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
-
- 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
- F23G2201/00—Pretreatment
- F23G2201/30—Pyrolysing
- F23G2201/304—Burning pyrosolids
Definitions
- the present invention relates to the field of treatment thermal treatment of waste, including a treatment thermolysis of waste.
- the waste likely to be treated according to the invention is preferably solid, heterogeneous and not dangerous.
- the invention advantageously makes it possible to treat waste from very variable sizes, at very variable flow rates also.
- thermolysis we already know, in the field of heat treatment of waste, installations intended to carry out thermolysis, which also allow most of them to treat either thermolysis is the solids from thermolysis.
- German document DE 4308551 presents the characteristic of gasifying the fine carbon-rich fraction of solid residues to produce synthesis gas and slag of fusion.
- thermolysis oven According to French request FR 2 668 774 a treatment of gases at hot, in the thermolysis oven itself, can be operated: this allows to be able to directly re-use the pyrolysis gases, without further treatment. More particularly according to this document, the pyrolysis gases are used to heat, directly or indirectly, waste.
- thermolysis process in terms of the implications for the gaseous or solid discharges that it generates.
- Increasingly stringent environmental standards planned or already in force in most industrialized countries, force operators to install less and less polluting installations. Releases of N0 x and MCI, HF, SO 2 , Co, fly ash, clinker, etc. are in particular subject to increasingly strict standards.
- thermolysis products namely either gaseous effluents or products solid.
- the object of the present invention is to remedy these drawbacks. It allows in particular a better valorization of the energy content garbage.
- the present invention makes it possible to minimize self-consumption. of energy required to carry out the process.
- thermolysis gases can be burnt less partially as fuel either in the cyclone hearth or in at least one of said energy recovery means.
- the means of combustion of the thermolysis gases includes said hearth cyclone.
- the means for combustion of the thermolysis gases and the energy recovery means are arranged so that the combustion means is powered by thermolysis gases and the means of energy recovery is supplied by the effluents of the means of combustion and, under certain operating conditions, by gases hot from the cyclone hearth.
- the installation according to the invention may comprise a means filtration of the fumes from the energy recovery means 11, an outlet of said filtration means being connected to an inlet of the hearth cyclone.
- the referenced raw waste (DB) can undergo first of all a pretreatment, the complexity of which depends on the type of treated waste, which uses traditional techniques: grinding, partial sorting, de-steeling, drying, etc.
- the purpose of this stage of pretreatment is to recover easily separable materials and recoverable, and homogenize waste.
- This part of the installation does does not in itself have an innovative character since the techniques used have long been used in the waste industry.
- This pre-treatment has no advantage of a character mandatory.
- the pretreated waste (DP) are introduced into a rotary furnace 1 with external heating or internal indirect via a device 2 allowing to guarantee the watertightness of the oven with the outside and to prevent thus any air entry into the oven.
- Device 2 which allows achieving this seal can be an Archimedes screw, or else a load introduction system by compacted bale.
- the rotary kiln can be as that disclosed in the French patent application IN. 94/06660, with indirect internal heating.
- waste undergo thermal degradation to result in formation a gas phase (GT) and a solid residue rich in matter carbonaceous (SC).
- GT gas phase
- SC solid residue rich in matter carbonaceous
- Waste and gases from their decomposition thermal circulate co-current in the oven. This operation is conducted at a temperature between 200 and 800 ° C and preferably between 350 and 600 ° C.
- the rotary kiln is surrounded a double jacket 3 equipped with combustion means like burners (not referenced), allowing to generate the thermal power required to heat the waste.
- the burners can be supplied, in known manner, by a party GT1 thermolysis gases, or by any other fuel such as fuel oil or natural gas.
- thermolysis allow the retention in carbon solids of almost all gases acids, in particular hydrochloric acid produced during the thermal decomposition of chlorinated plastics such as PVC.
- This self-neutralization of acid components by materials always present in the waste is favored, between others, by the reducing atmosphere as well as the bass temperatures to which the waste is subjected during the thermolysis.
- the yield is improved of capture of acid gases by carbonaceous solids.
- Purification carbonaceous solids which is described below makes it possible to eliminate in in particular the chlorine salts resulting from the capture of gases acids.
- the processing temperatures being low and thermolysis being carried out away from oxygen, metals heavy are neither volatilized nor oxidized, and therefore remain concentrated in carbon solids (SC).
- the carbonaceous solids (SC) are evacuated by a device 4 ensuring tightness with respect to outside (rotary valves, guillotine airlock, or any other equivalent device to perform this function).
- Carbon solids (CS) are transported to a device treatment plant 6 which aims to separate part of the materials inert and to remove soluble pollutants, including chlorine, present in carbonaceous solids. Details of the device of carbonaceous solids 6 is described in more detail more bottom, in relation to figure 3.
- purified carbon solids (SCE) can be directed to a combustion device 5, here consisting of a hearth cyclone with molten ash.
- part of the thermolysis gas can be used to heat the rotary kiln by combustion for example in burners located in the double envelope 3 surrounding the rotary kiln 1.
- the fraction excess (GT2) thermolysis gas can be directed to a combustion device, for example the cyclone molten ash 5.
- the cyclone molten ash hearth 5 is a hearth suitable for the combustion of solid fuels heavily loaded with low melting ash. It is characterized by turbulence high and a rotation of the flow, which allows obtain a significant residence time of the fuel and a good ash retention. It operates at temperatures of around 1000 to 1500 ° C. At these temperatures, the ashes melt and flow in the molten state out of the reactor.
- the interior of the cyclone hearth 5 may preferably be covered with a refractory ceramic coating capable of withstand temperatures of the order of 1500 ° C.
- SCE purified carbon solids
- the injection of purified carbon solids (SCE) is done pneumatically by a or more tangential rectangular or circular inputs distributed over a perimeter of the cyclone. We can also inject one or more of these inputs with a complement combustion air and / or all or part of the excess gas GT2 thermolysis.
- On a second perimeter of the cyclone hearth other tangential inputs can be installed so perform additional injections of combustion air or gaseous fuel as all or part of the surplus of the GT2 thermolysis gas.
- an additional air injection can be carried out at the upper outlet of the cyclone hearth, so improve combustion efficiency.
- Combustion in the cyclone hearth is optimized to minimize emissions of gaseous pollutants.
- the sharing of combustion air between the different inlets will therefore be carried out so as to ensure total combustion purified carbon solids and thermolysis gas, and minimize the formation of nitrogen oxides and unburnt materials.
- the cyclone hearth with molten ash allows advantageously to immobilize the elements definitively pollutants present in purified carbon solids, in particular heavy metals, by trapping in the vitreous matrix formed during the melting of the mineral materials contained in the purified carbon solids.
- the temperatures obtained during the combustion of purified carbon solids (SCE) and of the surplus of GT2 thermolysis gases are sufficient to melt these materials mineral.
- the ashes thus melted (CF) flow out of the hearth 5 and fall into a water tank 10 where they are cooled. When from their cooling, the ash forms the aggregates solid. These aggregates are inert with respect to leaching which allows them to be recycled and reused in applications road or public works for example.
- the hot fumes (F) from the mixed combustion of purified carbon solids and part of the thermolysis gases in the cyclone focus 5 are then directed to a device for energy recovery 11 such as a heat exchanger, boiler producing steam or hot water, or a boiler coupled with a turbine making it possible to produce electricity. Then these fumes are dedusted in a device 12 which can be a bag filter or a dust collector electrostatic, and returned to the atmosphere via an extractor 13 and a chimney 14 via a line 35.
- the ash from the recovery device respectively energy 11 and dust collector 12 are mixed with purified carbon solids then sent to cyclone 5 via lines 36 and 37 respectively.
- the ashes are vitrified in the cyclone 5 hearth, thus enabling inerting of pollutants adsorbed on this dust.
- thermolysis gas a part of the thermolysis gas (GT1) is used to heat the oven rotating by combustion for example in burners located in the double envelope 3 surrounding the rotary kiln 1.
- GT1 thermolysis gas
- GT2 excess fraction
- the burner and combustion chamber configurations minimize the formation of nitrogen oxides during the combustion of thermolysis gas, and guarantee destruction of all organic compounds thanks to a residence time of gas of at least 2 seconds at 850 ° C.
- Purified carbon solids are burned in a fireplace cyclone with molten ash 5 of a design identical to that described above but with a lower thermal power, in mixing with the ashes from the dedusting device smoke 12 and energy recovery device 11.
- the temperature reached during combustion of purified carbon solids is sufficient to allow the ash to melt and therefore trap the pollutants in the glass matrix.
- the molten ash (CF) flows into a water tank 10 where it are cooled and solidified to produce aggregates inert.
- the combustion air is staged as described previously and all or part of this air could also be preheated to improve the heat balance of the operation.
- the hot fumes (F) from the combustion of thermolysis (GT2) in combustion chamber 15 and those from the combustion of purified carbon solids (SCE) in the cyclone 5 focus are mixed and sent to a energy recovery 11 such as a heat exchanger, boiler producing steam or hot water, or a boiler coupled with a turbine making it possible to produce electricity. Then these fumes are filtered in a device 12 and returned to the atmosphere via an extractor 13 and a chimney 14.
- the ashes and dust from the energy recovery device 11 and dust collector 12 are mixed with the purified carbon solids and then sent in the cyclone 5 hearth in order to be vitrified, thus allowing the final inerting of the pollutants adsorbed on this dust.
- the embodiment of the invention according to Figure 2 has a more flexible operation than that according to the figure 1.
- the carbonaceous solids purified (SCE) are not sent to the home-cyclone 5, but stored.
- the cyclone 5 fireplace functions as indicated above. The stored fuels can then be burned in this period.
- This embodiment of the invention therefore allows a very good match between energy demand and need.
- the carbonaceous solids (SC) are evacuated via a waterproof device 4 and fall by gravity into a stirred tank 16 filled with room temperature water, which allows cooling of solids.
- the agitation of the mixture ensured for example by rotation of a shaft carrying blades 17, is such that the heaviest particles composed mainly of metals, mineral matter or glass, deposit at the bottom of the tank, while the lighter particles rich in carbon are kept in suspension.
- the bottom of the tank 16 can be immersed a screw, a carpet, a scraper or any other equivalent device 18 allowing continuous extraction mineral matter deposited at the bottom of the tank.
- This first tank 16 therefore allows the cooling of carbon solids as well as the separation of part of the materials minerals contained in carbonaceous solids.
- Inert mineral matter extracted by the device 18 are then rinsed with water on a vibrating screen 19 surmounted by a water spray boom 20, so eliminate carbon particles deposited on these materials mineral. Rinsing water contaminated by these carbon particles can be sent by a pump 21 to the first tank decantation 16.
- the mineral material flushing operation may well heard to be achieved by other means than those who come to be described without departing from the scope of the present invention.
- the mixture of water and carbonaceous solids in suspension in the tank 16 is taken up by a pump 22, then sent to a second perfectly agitated washing tank 23 containing water maintained at a temperature between 40 and 95 ° C, and preferably between 75 and 85 ° C.
- This temperature is maintained constant in tray 23 thanks to temperature regulation 24 connected to an electrical resistance or to any other device equivalent to maintain the water temperature at a setpoint.
- the residence time of carbonaceous solids in tray 23 is between 15 and 120 minutes.
- the report mass water / carbon solids is between 1 and 100 and preferably between 5 and 15. This operation makes it possible to dissolve essentially the chlorinated salts formed during the thermolysis. Heavy metals are not dissolved and remain concentrated in carbon solids.
- the solids carbonaceous can be ground in a mill 25 operating in liquid phase, in order to decrease the average particle size of carbon particles and speed up the washing step.
- This step can also be followed by a separation step on a 26 calibrated sieve to separate the aluminum sheets contained in carbon solids (SC).
- SC carbon solids
- This operation is especially necessary when carbonaceous solids come thermolysis of household waste.
- Water spray 27 is kept on the sieve containing the aluminum sheets in order to remove the carbon particles deposited on the surface of these. This last operation makes it possible to recover the aluminum sheets which can then be recycled and valued.
- the water-solids suspension carbonaceous is taken up by a pump 28 and then directed to a filtration device 29 which aims to remove the charged water in chlorides of carbonaceous solids.
- This operation can be performed with a centrifuge, a vacuum belt filter, or any other filtration device to separate water from carbon solids.
- the carbonaceous solids purified dry, or containing only a reduced quantity of humidity are stored in a silo 30.
- the waste water from filtration are directed if necessary to a device for water treatment 34 making it possible to precipitate the chlorinated salts, then reinjected into the first settling tank 16.
- a new water is constantly added thanks to the devices 20 and 27.
- the decanting and washing steps such as described above can be carried out in the same tank, simultaneously fulfilling the functions of tanks 16 and 23, the temperature is maintained between 40 and 95 ° C. The device previous is then simplified.
- the present invention allows the recovery of the energy content of waste thanks to the production of solid fuel and gaseous fuel purified, and their combustion.
- the device 6 for purifying carbonaceous solids according to the invention eliminates part of the materials mineral and recover recoverable materials such as aluminum. This device also makes it possible to increase the quality of the fuel produced, by reducing its ash rate and its content of pollutants. Finally he increases his power calorific.
- a cyclone hearth molten ash with combustion air staging allows to burn the purified carbon solids and / or all or part of the gases from thermolysis of waste, and this without emission of polluting compounds in gaseous or solid effluents from the combustion.
- the waste treatment method according to the invention avoids the dispersion of pollutants, since almost all of the pollutants are concentrated in carbon solids. Some of these pollutants are then removed by treatment purifying carbonaceous solids, the other part being immobilized in inert pellets from combustion in the hearth cyclone with molten ash.
- the invention relates to the realization of a complete system of waste treatment that removes pollutant emissions in the fumes from the combustion of thermolysis gases and carbonaceous solids, so the only smoke treatment to implement is a simple dusting.
- the invention thus avoids the installation of treatment devices of smoke by washing, which reduces the cost of treating waste compared to that of conventional techniques like incineration.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processing Of Solid Wastes (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Gasification And Melting Of Waste (AREA)
- Incineration Of Waste (AREA)
- Fertilizers (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9408767 | 1994-07-13 | ||
FR9408767A FR2722436B1 (fr) | 1994-07-13 | 1994-07-13 | Procede et installation de thermolyse de dechets |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0692677A1 EP0692677A1 (fr) | 1996-01-17 |
EP0692677B1 true EP0692677B1 (fr) | 1999-09-15 |
Family
ID=9465403
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95401503A Expired - Lifetime EP0692677B1 (fr) | 1994-07-13 | 1995-06-23 | Procédé et installation de thermolyse de déchets |
Country Status (9)
Country | Link |
---|---|
US (1) | US5728196A (pl) |
EP (1) | EP0692677B1 (pl) |
KR (1) | KR960004889A (pl) |
CN (1) | CN1065156C (pl) |
AT (1) | ATE184692T1 (pl) |
DE (1) | DE69512152T2 (pl) |
FR (1) | FR2722436B1 (pl) |
HU (1) | HU215757B (pl) |
PL (1) | PL178605B1 (pl) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108954344A (zh) * | 2018-07-29 | 2018-12-07 | 吴军伟 | 工业废盐渣无害化处理方法 |
Families Citing this family (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
AU4873397A (en) * | 1996-10-22 | 1998-05-15 | Traidec S.A. | Plant for thermolysis and energetic upgrading of waste products |
FR2762613B1 (fr) * | 1997-04-25 | 1999-06-11 | Traidec Sa | Installation pour le traitement par thermolyse et pour la valorisation energetique des dechets |
FR2754883B1 (fr) * | 1996-10-22 | 1998-12-24 | Traidec Sa | Installation pour la destruction par thermolyse des farines de viandes et la valorisation energetique de ces farines |
FR2791281B1 (fr) * | 1999-03-23 | 2001-06-08 | Thide Environnement | Installation de traitement de solides carbones issus d'un four de thermolyse de dechets urbains et/ou industriels, et dispositif de separation d'une telle installation |
US20020020112A1 (en) * | 2000-07-25 | 2002-02-21 | Scotlund Stivers | Process and apparatus for manufacturing fuel gas and liquid fuels from trash, other waste materials and solid fuels |
FR2822527B1 (fr) | 2001-03-20 | 2003-10-10 | Maillot Sarl | Procede de traitement des dechets industriels et/ou menagers et installation de traitement des dechets industriels et/ou menagers |
BE1015866A3 (fr) * | 2003-01-31 | 2005-10-04 | Group Portier Ind | Procede de traitement de residus de fumees d'incinerateur. |
FR2857608B1 (fr) * | 2003-07-15 | 2006-08-04 | Inst Francais Du Petrole | Procede et installation pour la depollution en continu de terres ou de boues |
NL1024313C2 (nl) * | 2003-09-17 | 2005-03-18 | Orgaworld B V | Werkwijze voor het thermisch behandelen van afval. |
DE102004002388A1 (de) * | 2004-01-15 | 2005-08-11 | Swb Erzeugung Gmbh & Co.Kg, | Verfahren zur energetischen Nutzung von Ersatzbrennstoffen, Pyrolyseanlage für Ersatzbrennstoffe sowie Kombination aus Pyrolyseanlage und Feuerungsanlage zur Verfeuerung von Pyrolysegasen |
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ITBS20070210A1 (it) * | 2007-12-21 | 2009-06-22 | Enzo Ranchetti | Processo e impianto per lo smaltimento di rifiuti contenenti metalli, frazioni inerti e frazioni organiche |
FR2940146B1 (fr) * | 2008-12-18 | 2011-06-17 | Inst Francais Du Petrole | Procede de separation par voie humide de solides carbones apres traitement par thermolyse |
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WO2015007314A1 (de) * | 2013-07-17 | 2015-01-22 | Georg Schons | Verfahren zum aufbereiten von schlacke in müllverbrennungsanlagen sowie müllverbrennungsanlage |
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FR547648A (pl) * | 1922-12-20 | |||
DE3811820A1 (de) * | 1987-08-03 | 1989-02-16 | Siemens Ag | Verfahren und anlage zur thermischen abfallentsorgung |
DE3735906A1 (de) * | 1987-10-23 | 1989-05-18 | Kloeckner Humboldt Deutz Ag | Verfahren zur thermischen entsorgung organischer oder organisch-kontaminierter abfallstoffe |
FR2668774B1 (fr) | 1990-11-07 | 1995-09-01 | Inst Francais Du Petrole | Procede et dispositif de production d'un combustible solide a partir de dechets combustibles. |
FR2678850B1 (fr) * | 1991-07-09 | 1998-12-24 | Inst Francais Du Petrole | Procede et installation de thermolyse de dechets industriels et/ou menagers. |
FR2679009B1 (fr) | 1991-07-09 | 1997-12-12 | Inst Francais Du Petrole | Procede et dispositif de traitement de dechets par contact direct |
DE4136438C2 (de) * | 1991-11-01 | 1995-04-27 | Sbw Sonderabfallentsorgung Bad | Verfahren zur thermischen Steuerung von Drehrohrverbrennungsanlagen |
DE4308551A1 (de) | 1993-03-17 | 1994-01-05 | Siemens Ag | Verfahren und Einrichtung zum Entsorgen von Abfall |
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CN108954344A (zh) * | 2018-07-29 | 2018-12-07 | 吴军伟 | 工业废盐渣无害化处理方法 |
Also Published As
Publication number | Publication date |
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CN1065156C (zh) | 2001-05-02 |
US5728196A (en) | 1998-03-17 |
CN1120472A (zh) | 1996-04-17 |
HU9502112D0 (en) | 1995-09-28 |
FR2722436A1 (fr) | 1996-01-19 |
PL309591A1 (en) | 1996-01-22 |
ATE184692T1 (de) | 1999-10-15 |
DE69512152D1 (de) | 1999-10-21 |
DE69512152T2 (de) | 2000-01-05 |
FR2722436B1 (fr) | 1996-09-20 |
KR960004889A (pl) | 1996-02-23 |
EP0692677A1 (fr) | 1996-01-17 |
PL178605B1 (pl) | 2000-05-31 |
HU215757B (hu) | 1999-02-01 |
HUT75857A (en) | 1997-05-28 |
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