WO2001040411A1 - Procede et installation de gazeification de composes carbones - Google Patents
Procede et installation de gazeification de composes carbones Download PDFInfo
- Publication number
- WO2001040411A1 WO2001040411A1 PCT/FR2000/003360 FR0003360W WO0140411A1 WO 2001040411 A1 WO2001040411 A1 WO 2001040411A1 FR 0003360 W FR0003360 W FR 0003360W WO 0140411 A1 WO0140411 A1 WO 0140411A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- compounds
- bath
- molten slag
- slag
- furnace
- Prior art date
Links
- 150000001875 compounds Chemical class 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000009434 installation Methods 0.000 title claims abstract description 25
- 239000002893 slag Substances 0.000 claims abstract description 104
- 239000007789 gas Substances 0.000 claims abstract description 53
- 239000007800 oxidant agent Substances 0.000 claims abstract description 41
- 238000002485 combustion reaction Methods 0.000 claims abstract description 26
- 239000000356 contaminant Substances 0.000 claims abstract description 21
- 230000001590 oxidative effect Effects 0.000 claims abstract description 21
- 239000000203 mixture Substances 0.000 claims abstract description 19
- 238000011068 loading method Methods 0.000 claims abstract description 12
- 238000000197 pyrolysis Methods 0.000 claims abstract description 12
- 238000002309 gasification Methods 0.000 claims description 25
- 230000008569 process Effects 0.000 claims description 25
- 239000000446 fuel Substances 0.000 claims description 12
- 230000004927 fusion Effects 0.000 claims description 10
- 239000012764 mineral filler Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 4
- 230000004907 flux Effects 0.000 claims description 4
- 239000013529 heat transfer fluid Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 230000001143 conditioned effect Effects 0.000 claims description 2
- 230000008021 deposition Effects 0.000 claims description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 2
- 239000011707 mineral Substances 0.000 abstract description 2
- 150000001722 carbon compounds Chemical class 0.000 description 10
- 239000002023 wood Substances 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 229910052804 chromium Inorganic materials 0.000 description 4
- 239000011651 chromium Substances 0.000 description 4
- 239000003245 coal Substances 0.000 description 4
- 229910052802 copper Inorganic materials 0.000 description 4
- 239000010949 copper Substances 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 229910052785 arsenic Inorganic materials 0.000 description 3
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000013626 chemical specie Substances 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- WHRZCXAVMTUTDD-UHFFFAOYSA-N 1h-furo[2,3-d]pyrimidin-2-one Chemical compound N1C(=O)N=C2OC=CC2=C1 WHRZCXAVMTUTDD-UHFFFAOYSA-N 0.000 description 1
- 235000006173 Larrea tridentata Nutrition 0.000 description 1
- 244000073231 Larrea tridentata Species 0.000 description 1
- 235000019738 Limestone Nutrition 0.000 description 1
- 235000015076 Shorea robusta Nutrition 0.000 description 1
- 244000166071 Shorea robusta Species 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910000413 arsenic oxide Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 229960002126 creosote Drugs 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000003100 immobilizing effect Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 235000011837 pasties Nutrition 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 239000010875 treated wood Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/57—Gasification using molten salts or metals
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/04—Purifying combustible gases containing carbon monoxide by cooling to condense non-gaseous materials
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
- C10K1/10—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors with aqueous liquids
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
- C10J2200/158—Screws
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/164—Integration of gasification processes with another plant or parts within the plant with conversion of synthesis gas
- C10J2300/1643—Conversion of synthesis gas to energy
- C10J2300/165—Conversion of synthesis gas to energy integrated with a gas turbine or gas motor
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1861—Heat exchange between at least two process streams
- C10J2300/1884—Heat exchange between at least two process streams with one stream being synthesis gas
Definitions
- the present invention relates to a process for gasifying compounds of the carbon compound type and more particularly compounds comprising mineral fillers and / or potential contaminants.
- the present invention also relates to an installation for implementing the method.
- One area of application envisaged is in particular that of the recovery of carbochemical or petrochemical residues and treated wood.
- the reactions are more or less complete and they generally lead to a mixture of gases comprising in particular carbon dioxide and hydrogen.
- the Winkler process is well suited to the gasification of coal and operates in a fluidized bed, making it possible to produce a mixture of carbon monoxide and hydrogen.
- this process is poorly suited to the types of fuel envisaged, in particular because of the particles of wood which fly away easily. Mention will also be made of the Lurgi process, fed with granular coal and working in a fixed bed under pressure, but at low temperature, which causes the release of numerous harmful compounds which it is necessary to recover by filtering the gases in a column of oil wash.
- no device is provided for inerting any contaminants or for removing the mineral charges that the coal could contain.
- the types of fuel envisaged include mineral fillers and above all contaminants, in particular chromium and copper, which it is essential to recover and to inert.
- An object of the present invention is to provide a process for gasifying a compound comprising mineral fillers and / or potential contaminants in which the mineral fillers are removed, with the contaminants which are inert.
- the process for gasifying compounds is characterized in that it comprises the following steps:
- At least said compounds are loaded into a molten slag bath and the oxidizer is injected into said bath so that the mixture, carbonaceous compounds / oxidizer, is over-stoichiometric, whereby a first part of said compounds is pyrolyzed, whereby a second part undergoes a combustion reaction capable of yielding thermal energy to said slag bath, and whereby a third part diffuses into said bath,
- a characteristic of the gasification process resides in the support constituted by the molten slag, in which the carbonaceous compounds, likely to contain mineral fillers and / or potential contaminants, decompose by pyrolysis.
- the carbonaceous compounds likely to contain mineral fillers and / or potential contaminants, decompose by pyrolysis.
- temperature between 1100 ° C and 1500 ° C, carbonaceous compounds form new chemical species leading to synthesis gas, and potential non-volatilized contaminants diffuse in the molten slag.
- the injected oxidizer and the new chemical species formed constitute a mixture which, under the effect of temperature, leads to a combustion reaction.
- the object of the invention is to produce synthetic gas and to do this we adjust the proportion of carbonaceous compounds, that is to say of fuel, and of oxidizer so that the mixture is super-stoichiometric.
- the quantity of fuel is greater than the quantity of oxidizer capable of reacting with it and therefore a first part of the carbon compounds is pyrolyzed to lead to synthesis gas and a second part is burned and supplies energy to the slag.
- burnt gases and the gases from the pyrolysis are recovered, but it is understood that it is the latter which are of interest, either energetically or for various syntheses.
- the temperature of said slag is lowered by pouring it, then it is granulated.
- the temperature of a part of the molten slag is lowered by removal of said part. This operation consists in pouring the slag either sequentially or continuously.
- fluxes are added to the molten slag.
- the said compounds are conditioned in solid elements so as to charge the said elements directly above the molten slag bath, whereby said elements are deposited on the surface. of said bath and / or are incorporated therein.
- the carbon compounds are sufficiently homogeneous and dry, preferably preferably, said compounds and the oxidizer are simultaneously injected into the molten slag bath.
- the object of the present invention is to recover the energy contained in carbonaceous compounds, in particular gases, and according to a particular characteristic, said gases are purified so as to obtain a clean combustible gas.
- This gas can be burned in situ in a thermal power plant or transferred to a distribution network with or without cogeneration.
- the gases directly coming from the combustion reaction and from the pyrolysis are hot and according to another particular characteristic, the heat energy is recovered, in particular from said gases, so as to transfer thermal energy to a heat transfer fluid.
- a fourth part of said compounds vaporized by the slag bath is condensed into fusion. Indeed, a certain number of elements contained in carbonaceous compounds do not participate in the pyrolysis or combustion reactions and vaporize on contact with the slag. These elements are isolated at the heat exchanger, since the latter contributes to the condensation of said fourth part.
- Another object of the present invention is to provide an installation for the gasification of compounds, in particular carbon compounds, comprising mineral fillers and / or potential contaminants, said installation comprising: means for containing a bath of molten slag,
- the molten slag bath is contained in the lower part of a vertical cylindrical furnace comprising at least one opening pierced in the wall of the upper part of said furnace for loading said compounds , and at least one opening pierced in the wall of the lower part of said furnace to take at least part of the molten slag. It is understood that the carbonaceous compounds are projected into the molten slag from the top of the furnace, to be transformed, and that it is the same for the adjustments of the slag from which a part is removed.
- the wall of the upper part of the vertical oven is pierced with an orifice intended to collect at least the gases resulting from the pyrolysis and of the combustion of said first and second parts and said installation further comprises washing means connected to said orifice for purifying said gases.
- a heat exchanger and deposition chambers are interposed between the oven and the washing means so as to recover at least partially the heat energy of said products and to recover a fourth part of the compounds vaporized in the oven in condensed form.
- the means for loading said compounds to include a worm screw, opening directly below the molten slag bath, provided with heating means , whereby the compounds can be agglomerated together by melting at least one of said compounds. It is understood that the endless screw fixed on the opening intended for loading makes it possible to isolate the enclosure of the furnace when it is in operation and that it contains carbonaceous compounds. The fact that certain compounds are made pasty and agglomerate all the other compounds contributes to the impermeability of the loading opening with respect to the gaseous mass.
- the means for injecting the oxidant into the molten slag comprise a lance which passes through the wall of the upper part of the furnace to plunge into the bath of molten slag and in which the oxidant is under pressure.
- the means for injecting the oxidant into the molten slag comprise a lance which passes through the wall of the lower part of the furnace to open into the bath of molten slag and in which the oxidant is under pressure.
- the end of the lance is immersed in the slag, and the oxidizer under pressure diffuses therein to react with the fuel.
- the opening pierced in the wall of the lower part of said oven opens into a reservoir contiguous to said oven, open in its upper part, the edges of which reach at least the average level. of the molten slag bath contained in the lower part of said furnace and said lance is introduced into said open upper part and passes through the common wall of the lower part of the furnace and of said tank to open into the molten slag bath.
- said tank makes it possible to pour the slag more easily, in particular within the framework of a continuous process, since it suffices to provide a groove in the rim of the tank in the extension of the level of the molten slag bath.
- each adjustment of the slag causes an increase in the height of the level and consequently the flow of a part of the molten slag.
- FIG. 1 is a general schematic view of a gasification installation for implementing the method according to the invention
- FIG. 2 is a simplified vertical sectional view of the furnace according to a particular embodiment of the installation
- FIG. 3 is a schematic sectional view along the plane III-
- Reactor 2 is the essential element of the installation, since it is within it that all of the transformations according to the invention take place.
- the oven 2 is made of refractory material and it forms a vertical cylinder whose height is greater than the diameter.
- the diameter of such an oven is fixed according to the quantities of carbon compounds which it is desired to transform, but it is preferably between two and four meters, which makes it possible to optimize the overall yield.
- a slag 4 is deposited which is heated in a first phase by means of a lance 6 at the end of which burn a fuel and an oxidizer, injected under pressure.
- the end of the lance is immersed in the slag and causes it to melt, so that the molten slag constitutes a bath whose temperature can be between 1100 ° C and 1500 ° C.
- the lance passes through the wall of the upper part 8 of the furnace 2 and it is movable along the axis of the furnace so that the flame can be immersed in the slag.
- Fuels likely to be used are preferably gas or fuel oil and the oxidizer is generally pure air or oxygen-enriched air.
- the thermal energy is supplied to the slag 4 by the controlled combustion of the carbonaceous compounds 10 which float in the slag bath. These compounds are loaded from a hopper 12 onto the slag bath 4 by means of the worm screw 14.
- the carbon compounds capable of being transformed in the furnace 2 are essentially wood and hydrocarbons.
- Wood used as support for low voltage power lines or telephone lines is generally treated with water-soluble salts, for example solutions of copper, chromium, and arsenic oxides, while railway sleepers iron are treated with creosote.
- water-soluble salts for example solutions of copper, chromium, and arsenic oxides
- railway sleepers iron are treated with creosote.
- the wood is packaged in fragments, the fine part of which is agglomerated with carbochemical or petrochemical residues.
- Bituminous shales can also be used in this gasification process.
- the wood in the form of shavings and sawdust is introduced into the hopper 12 with the carbochemical or petrochemical residues forming a mixture, said hopper 12 being extended by the endless screw 14 which opens into an opening 16 pierced in the wall of the upper part 8 of the oven 2.
- the endless screw 14 is hermetically connected to the oven 2 and it is provided with a heating system which surrounds it so that, when the said mixture passes through it, the residues soften and form with shavings and sawdust from homogeneous portions comparable to solid elements. When these solid elements are at the base of the opening 16 they fall into the furnace 2 and are deposited on the surface of the molten slag bath 4.
- These elements consisting essentially of carbon compounds 10 decompose under the effect of heat to form new substances, and in particular gases.
- a certain number of these compounds, constituting said fourth part, are vaporized, this is notably the case with water and arsenic.
- the latter is in the oxidized form in the feed but the conditions in the furnace reduce it to the metallic state; it will thus condense in the metallic form, which will allow better elimination.
- the lance 6 which, in the first phase, makes it possible to inject an oxidizer and a fuel into the slag 4 so as to transfer energy to said slag by means of combustion, brings in this second phase the oxidant necessary for the controlled combustion of the carbonaceous compounds 10 present on the surface of the molten slag bath 4.
- the oxidizer is injected at the end of the lance into the heart of the slag. In this way, said oxidizer diffuses into said slag 4 and reacts with carbonaceous compounds 10 according to a combustion reaction.
- the oxidizer consists of pure air, oxygen or a mixture of the two which is adjusted according to the oxidizing properties which it is desired to have.
- the oxidizer flow rate is also adjusted so that the mixture of carbonaceous compounds 10 / oxidizer is over-stoichiometric and thus, only a so-called second part of the carbonaceous compounds is burned to provide the energy necessary to maintain the slag in fusion.
- the rest of the carbon compounds, said first part, is therefore pyrolysis and forms new substances and in particular carbon monoxide and hydrogen.
- Carbonaceous compounds are likely to contain potential contaminants which spread into the molten slag during decomposition. This is particularly the case for chromium and copper.
- the chromium will scorify and the copper will dissolve in the slag if its content is very limited, otherwise it will be at the base of the formation of the dense phase in metallic or other form.
- the slag will be poured and then granulated. The pouring will be done through an opening, not shown in Figure 1, pierced in the wall of the lower part of the furnace 2. To compensate for the removal of slag, it is adjusted with conventional fluxes of the limestone, sand, ore type. iron, soda or others. These additions can be made from the opening drilled in the wall of the upper part 8 intended for loading carbonaceous compounds.
- a special opening is provided, not shown, pierced in the wall of the upper part 8 to load these fluxes.
- the appearance of the gases above the slag produces a gas pressure in the oven, which gases tend to escape through an orifice 18 pierced in the wall of the upper part 8 of the oven 2.
- a rising gas flow therefore appears in the furnace with regard to which the portions of carbonaceous compounds are sufficiently heavy to reach slag 4 in fusion and not to be entrained by the gaseous mass.
- the temperature of the gases is generally greater than 1100 ° C., therefore, in order to optimize the energy efficiency of the installation, the heat energy of said gases is at least partially recovered by directing them into a chamber 20 comprising an exchanger thermal 22.
- the latter consists of a coil in which circulates a heat transfer fluid capable of actuating a turbine among others.
- the gases cool in contact with the heat exchanger 22, and a certain number of compounds, constituting said fourth part, condense, in particular arsenic at around 800 ° C.
- a space 24 is provided in the chamber 20 so as to store the condensation dust of the arsenic.
- the latter will be recycled and reintroduced at the level of the conditioning of the load.
- the gases reach a temperature of about 200 ° C
- the efficiency of the heat exchanger 22 becomes relatively poor and the gases are evacuated. They are conveyed in washing means 26, connected to the chamber 20 to remove the last traces of dust, as well as the unwanted gases in order to supply clean gas at outlet 28.
- a main fan (not shown) is provided so to take up the gases at outlet 28 to convey them in a gasometer. This main fan is capable of creating a vacuum at the end of the gasification installation, contributing to the recovery of gases from the oven.
- the washing water is recycled in a purification device 30 to be reused.
- FIG. 2 shows a view in vertical section of the furnace 2 in the wall of the lower part of which an opening 34 is pierced which opens into a tank 36, or pre-crucible, adjoining the lower part of the furnace 2.
- the pre-crucible 36 is open in its upper part and its edges 38 are substantially above the average level of the slag bath 4 in molten furnace 2. It is understood that the slag 4 in fusion gains the pre-crucible 36 and that its level is established at the level of the slag 4 of the furnace 2.
- the lance 6 is introduced into the open upper part of the crucible 36 and crosses, obliquely, the common wall of the lower part of the furnace 2 and of the fore-crucible 36, so that its end 40 opens into the molten slag bath from the furnace.
- the oxidizer is injected into the slag 4 of the furnace and diffuses in particular on the surface so that the carbonaceous compounds burn.
- This embodiment notably makes it possible to overcome the problems of seal between the lance 6 and the furnace 2 when the latter passes through it in the upper part.
- Figure 4 there is shown the lance 6, the furnace 2 and the pre-crucible 36 in top view according to section IV-IV.
- the lance 6 is eccentric with respect to the furnace 2, and the projection of the oxidizer imparts a rotation to the melt allowing better agitation and a good circulation of the slag 2 in the pre-crucible so that the latter does not freeze there .
- the orifice of the wall 42 through which the lance passes is at least as large as the opening 34 pierced in the wall of the lower part of the oven.
- the opening 34 is also eccentric and pierced tangentially to the internal wall of the furnace to open out in a corner of the pre-crucible. This configuration reduces the residence time of the slag 4 melted inside the fore-crucible and consequently the risks that it freezes there.
- the pre-crucible is provided with a cover, not shown, having an orifice for the passage of the lance.
- the slag is poured at regular or continuous intervals by means of a channel 44 formed in the edge of the pre-crucible, the closure of which is controllable.
- the slag is then granulated and it is likely to be used as an aggregate or as a sandblasting agent since the potential contaminants it contains are perfectly immobilized.
- a tap hole is provided at the base of the pre-crucible, closed by a plug, making it possible to eliminate a dense phase which forms and settles at the bottom of the molten slag bath.
- the invention will now be illustrated by means of a comparative example, in which three different oxidant compositions are injected into the molten slag.
- the example aims to give energy production values that can be expected from the installation in accordance with the invention by varying the composition of the oxidant.
- the values and compositions below relate to a mixture comprising 70.6% of wood and 29.4% of pitch.
- the wood contains 15% moisture and 0.8% ash and the "pitch" contains 80% pure pitch and 20% earth.
- the necessary corrective will be brought to the slag, for example iron oxide.
- the optimization of the process can be easily done by modulating the flow of oxygen and air.
- further adjustments of oxidizers would have to be made.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Industrial Gases (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Carbon And Carbon Compounds (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU21818/01A AU2181801A (en) | 1999-12-03 | 2000-12-01 | Method and installation for gasifying carbonaceous compounds |
US10/148,753 US7087098B2 (en) | 1999-12-03 | 2000-12-01 | Method and installation for gasifying carbonaceous compounds |
DE60045662T DE60045662D1 (de) | 1999-12-03 | 2000-12-01 | Verfahren zur vergasung von kohlenstoffhaltigen materialien |
EP00985382A EP1235889B1 (fr) | 1999-12-03 | 2000-12-01 | Procede de gazeification de composes carbones |
CA2393088A CA2393088C (fr) | 1999-12-03 | 2000-12-01 | Procede et installation de gazeification de composes carbones |
AT00985382T ATE499430T1 (de) | 1999-12-03 | 2000-12-01 | Verfahren zur vergasung von kohlenstoffhaltigen materialien |
DK00985382.1T DK1235889T3 (da) | 1999-12-03 | 2000-12-01 | Fremgangsmåde til forgasning af kulstofholdige materialer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9915246A FR2801895B1 (fr) | 1999-12-03 | 1999-12-03 | Procede et installation de gazeification de composes carbones |
FR99/15246 | 1999-12-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001040411A1 true WO2001040411A1 (fr) | 2001-06-07 |
Family
ID=9552844
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2000/003360 WO2001040411A1 (fr) | 1999-12-03 | 2000-12-01 | Procede et installation de gazeification de composes carbones |
Country Status (11)
Country | Link |
---|---|
US (1) | US7087098B2 (fr) |
EP (1) | EP1235889B1 (fr) |
AT (1) | ATE499430T1 (fr) |
AU (1) | AU2181801A (fr) |
CA (1) | CA2393088C (fr) |
DE (1) | DE60045662D1 (fr) |
DK (1) | DK1235889T3 (fr) |
ES (1) | ES2364123T3 (fr) |
FR (1) | FR2801895B1 (fr) |
PT (1) | PT1235889E (fr) |
WO (1) | WO2001040411A1 (fr) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090220410A1 (en) | 2005-09-30 | 2009-09-03 | Tata Steel Limited | Method for Producing Hydrogen and/or Other Gases from Steel Plant Wastes and Waste Heat |
JP5017362B2 (ja) * | 2006-04-28 | 2012-09-05 | ターター スチール リミテッド | 製鉄所のスラグ及び廃棄物質を使用する水の熱−化学分解による水素ガスの製造方法 |
US20080141591A1 (en) * | 2006-12-19 | 2008-06-19 | Simulent Inc. | Gasification of sulfur-containing carbonaceous fuels |
FR3025732B1 (fr) * | 2014-09-15 | 2019-05-31 | Pyro Green Innovations | Procede et installation de vitrification en continu de materiaux fibreux |
FR3045423B1 (fr) * | 2015-12-17 | 2019-12-27 | Pyro Green Innovations | Procede et installation de traitement de dechets |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2445364A1 (fr) * | 1978-12-26 | 1980-07-25 | Sumitomo Metal Ind | Procede, appareil et lance pour la gazeification de matieres carbonees solides |
US4423704A (en) * | 1981-09-16 | 1984-01-03 | Persinger James G | Method for improving efficiency of an internal combustion irrigation engine |
EP0175207A2 (fr) * | 1984-09-15 | 1986-03-26 | DORNIER SYSTEM GmbH | Procédé et appareil pour gazéifier des ordures |
US5656042A (en) * | 1992-10-22 | 1997-08-12 | Texaco Inc. | Environmentally acceptable process for disposing of scrap plastic materials |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3089766A (en) * | 1958-01-27 | 1963-05-14 | Chemetron Corp | Controlled chemistry cupola |
BE786025A (fr) * | 1971-07-09 | 1973-01-08 | Union Carbide Corp | Procede d'incineration d'ordures |
LU71434A1 (fr) * | 1974-12-06 | 1976-11-11 | ||
JP2000001677A (ja) * | 1998-06-17 | 2000-01-07 | Yoichi Wada | 高分子系廃棄物の熱分解装置 |
-
1999
- 1999-12-03 FR FR9915246A patent/FR2801895B1/fr not_active Expired - Fee Related
-
2000
- 2000-12-01 AT AT00985382T patent/ATE499430T1/de active
- 2000-12-01 PT PT00985382T patent/PT1235889E/pt unknown
- 2000-12-01 CA CA2393088A patent/CA2393088C/fr not_active Expired - Lifetime
- 2000-12-01 DE DE60045662T patent/DE60045662D1/de not_active Expired - Lifetime
- 2000-12-01 DK DK00985382.1T patent/DK1235889T3/da active
- 2000-12-01 EP EP00985382A patent/EP1235889B1/fr not_active Expired - Lifetime
- 2000-12-01 AU AU21818/01A patent/AU2181801A/en not_active Abandoned
- 2000-12-01 US US10/148,753 patent/US7087098B2/en not_active Expired - Lifetime
- 2000-12-01 WO PCT/FR2000/003360 patent/WO2001040411A1/fr active Application Filing
- 2000-12-01 ES ES00985382T patent/ES2364123T3/es not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2445364A1 (fr) * | 1978-12-26 | 1980-07-25 | Sumitomo Metal Ind | Procede, appareil et lance pour la gazeification de matieres carbonees solides |
US4423704A (en) * | 1981-09-16 | 1984-01-03 | Persinger James G | Method for improving efficiency of an internal combustion irrigation engine |
EP0175207A2 (fr) * | 1984-09-15 | 1986-03-26 | DORNIER SYSTEM GmbH | Procédé et appareil pour gazéifier des ordures |
US5656042A (en) * | 1992-10-22 | 1997-08-12 | Texaco Inc. | Environmentally acceptable process for disposing of scrap plastic materials |
Also Published As
Publication number | Publication date |
---|---|
US7087098B2 (en) | 2006-08-08 |
EP1235889B1 (fr) | 2011-02-23 |
PT1235889E (pt) | 2011-06-01 |
CA2393088C (fr) | 2010-03-30 |
US20030056438A1 (en) | 2003-03-27 |
CA2393088A1 (fr) | 2001-06-07 |
AU2181801A (en) | 2001-06-12 |
FR2801895B1 (fr) | 2002-03-01 |
DK1235889T3 (da) | 2011-06-14 |
DE60045662D1 (de) | 2011-04-07 |
FR2801895A1 (fr) | 2001-06-08 |
ATE499430T1 (de) | 2011-03-15 |
ES2364123T3 (es) | 2011-08-25 |
EP1235889A1 (fr) | 2002-09-04 |
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