EP2231829A1 - Gazéificateur et procédés de gazéification l'utilisant - Google Patents
Gazéificateur et procédés de gazéification l'utilisantInfo
- Publication number
- EP2231829A1 EP2231829A1 EP08702378A EP08702378A EP2231829A1 EP 2231829 A1 EP2231829 A1 EP 2231829A1 EP 08702378 A EP08702378 A EP 08702378A EP 08702378 A EP08702378 A EP 08702378A EP 2231829 A1 EP2231829 A1 EP 2231829A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- zone
- ash
- gasifier
- air
- syngas
- 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.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000002309 gasification Methods 0.000 title claims abstract description 27
- 239000002699 waste material Substances 0.000 claims abstract description 9
- 231100001261 hazardous Toxicity 0.000 claims abstract description 4
- 239000007789 gas Substances 0.000 claims description 61
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 38
- 239000001301 oxygen Substances 0.000 claims description 38
- 229910052760 oxygen Inorganic materials 0.000 claims description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 33
- 238000000197 pyrolysis Methods 0.000 claims description 30
- 238000007254 oxidation reaction Methods 0.000 claims description 26
- 230000003647 oxidation Effects 0.000 claims description 23
- 238000001035 drying Methods 0.000 claims description 19
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 12
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 11
- 230000015572 biosynthetic process Effects 0.000 claims description 11
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 11
- 239000001257 hydrogen Substances 0.000 claims description 11
- 229910052739 hydrogen Inorganic materials 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 9
- 238000007689 inspection Methods 0.000 claims description 7
- 239000002920 hazardous waste Substances 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 4
- 239000011819 refractory material Substances 0.000 claims description 4
- 238000004523 catalytic cracking Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 230000006378 damage Effects 0.000 claims description 3
- 239000010808 liquid waste Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 239000012717 electrostatic precipitator Substances 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000005201 scrubbing Methods 0.000 claims description 2
- 230000003213 activating effect Effects 0.000 claims 3
- 239000012808 vapor phase Substances 0.000 claims 1
- 239000003473 refuse derived fuel Substances 0.000 abstract description 38
- 238000006722 reduction reaction Methods 0.000 description 22
- 238000006243 chemical reaction Methods 0.000 description 20
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Natural products O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 9
- 238000002485 combustion reaction Methods 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 5
- 229910002092 carbon dioxide Inorganic materials 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229960004424 carbon dioxide Drugs 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000004517 catalytic hydrocracking Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 150000002013 dioxins Chemical class 0.000 description 2
- 150000002240 furans Chemical class 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000002211 methanization Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005507 spraying 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
- C10J3/02—Fixed-bed gasification of lump fuel
- C10J3/20—Apparatus; Plants
- C10J3/22—Arrangements or dispositions of valves or flues
- C10J3/24—Arrangements or dispositions of valves or flues to permit flow of gases or vapours other than upwardly through the fuel bed
- C10J3/26—Arrangements or dispositions of valves or flues to permit flow of gases or vapours other than upwardly through the fuel bed downwardly
-
- 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
- C10J3/02—Fixed-bed gasification of lump fuel
- C10J3/20—Apparatus; Plants
- C10J3/22—Arrangements or dispositions of valves or flues
-
- 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
- C10K1/02—Dust removal
- C10K1/026—Dust removal by centrifugal forces
-
- 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
-
- 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
- C10J2200/152—Nozzles or lances for introducing gas, liquids or suspensions
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Definitions
- This invention is related to a gasifier which is used to recover gas from waste by thermally processing the waste and is also related to gasification methods using this gasifier. Specifically, this invention is related to gasification methods realized using this gasifier in which switching between downdraft and updraft modes can be realized without any interruptions according to the feedstock material introduced and the gas recovered , for which the gasification realized under vacuum conditions with high efficiency.
- WO2007/081296 which belongs to the owner of the present application, it is disclosed that ash and tar production is high in circulating bed up/downdraft gasifies compared to fix bed up/downdraft gasifiers. During the suction of the gas, partially unprocessed feedstock will come out along with and the pyrolytic operation will not be proper. In addition to that, since the unprocessed feedstock will leak from the gasifier, full process may not be realized.
- One of the objects of this invention is to provide modular solutions instead of huge plants at geographical areas where the access is difficult by processing in an environmentally sound manner the refuse -derived -fuel (RDF) obtained from waste including hazardous, industrial and municipal waste.
- RDF refuse -derived -fuel
- Another object of this invention is to let the smooth transfer between modes without interrupting the process. Therefore energy, labor and time saving is realized via the invented gasifier and the gasification method.
- Another object of this invention is to obtain a gasifier and a gasification method which decreases pollution in the output gas and increases the hydrogen content.
- Another object of this invention is to obtain a gasifier and a gasification method which prevent the solidification of feedstock and clinker formation within the reactor and provides continuous gas production.
- Incineration It is the combusting process of municipal solid waste at a temperature of 1200-1600 0 C within full oxygen environment. Some of the differences between gasification and incineration are:
- the incineration process mainly forms carbon monoxide and vapor. These are waste gases and are let into the atmosphere. However, the syngas formed in gasification process is mainly formed of hydrogen and carbon monoxide gases. The syngas is not a waste gas. This can be used in burners, in gas turbines or in internal combustion engines for electrical energy production.
- Incineration forms complex molecules containing poisonous materials such as dioxins and furans. Whereas gasification transforms complex molecules into gases with simpler molecule formation and prevents the formation of poisonous compounds such as dioxins and furans.
- Pyrolysis It is the thermal degradation of solid waste at 500-600 0 C and in no oxygen containing environment.
- the syngas formed mainly contains hydrogen, carbon monoxide, carbon dioxide, methane and tar including complex hydrocarbons. This gas mixture can be used in burners for burning purposes, in gas turbines and internal combustion engines for electrical energy generation or coal and active carbon production.
- Figure 1 is the general outlook of the plant in which the gasifier and gasification method according to this invention are used
- Figure 2 shows the schematic cross section of the gasifier working in updraft mode.
- Figure 3 shows the schematic cross section of the gasifier working in downdraft mode.
- Figure 4 shows the schematic cross section of the ash pool of this invention.
- the present gasifier (1) comprises a scale (9.2)
- a bottleneck zone (2) that comprises a double sliding valve (9) and a rotating valve
- a drying zone (3.1) located under the bottleneck zone (2) with a diameter bigger than the bottleneck zone comprising a higher syngas outlet zone (3.2), a safety valve (11), a level indicator (12), an inspection glass (12.1), a sliding cover (12.2), a thermocouple (13.2), a pressure forwarder (14), a pressure meter in syngas outlet zone, a proportional valve (19) and a hydraulic piston (21);
- a pyrolysis zone (4) located under the drying zone (3) comprising a preheated air and oxygen inlet (4.1), air nozzles (4.4), a vibrator (10), a thermocouple (13.1), liquid hazardous waste injection nozzles (20), a proportional valve for hazardous liquid waste (20.1);
- a cambered oxidation zone (5) comprising top air nozzles (4.2), bottom air nozzles
- a reduction zone (6) interior surface of which is covered with refractory material to prevent heat dissolvement comprising upper air nozzles (4.5), lower air nozzles (4.6), an air chamber (4.8), lower preheated air or oxygen inlet (6.2), proportional valve (6.4) for air or oxygen inlet, an ash grate (7.1) at the gas outlet zone for creating centrifugal effect, vapour nozzles (7.2) for increasing the carbon monoxide and hydrogen amount to enrich syngas, an igniter (8.1), igniting system (10.1) for the arc formation, a thermocouple (13.3), a vapour proportional valve (15) for regulating the vapour percentage;
- an ash section (7) comprising ash discharger (7.3), an ash pool (22), a first threaded carrier (22.1) to convey big particles from ash discharger into the ash pool, a second threaded carrier (22.2), an ash carrying palette (22.3);
- a precooler and scrubber system placed between the gasifier reactor and fan and comprising a cyclone, syngas vapor exchanger, a gas cleaning scrubber and an electro static precipitator at least one fan (24); and valves (17,18).
- the gasifier permits the switching between downdraft and updraft modes without any interruption during the gasification process according to the feedstock material and the gas produced.
- the gasifier (1) contains the an ash section (7) and at least one ash discharger in order to create centrifugal effect, at least one ash pool (22), at least one first threaded carrier (22.1) which conveys big particles coming from ash discharger into ash pool, at least one second threaded carrier (22.2), at least one ash carriage palette (22.3), at least one dry ash pool (22.4).
- the second carrier (22.2) axially rotates and carries small particles of ash accumulated at the bottom and popped to the surface through the ash carrying palette (22.3) into the dry ash pool (22.4).
- the double sliding valve (9) located at the bottleneck zone prevents the leakage and moves horizontally back and forth reciprocally. It is formed of two valves located as one on top of the other one and which is driven by a hydraulic piston. .
- the RDF level in the gasifier (1) needs to be supervised by the operator and this can be done thru ultrasonic voiced level indicator (12).
- ultrasonic voiced level indicator (12) In order to control the RDF, there is an optional high heat and vacuum resistant window (12.1).
- the sliding cover (12.2) used for protecting the inspection window is formed in a single sliding cover system and prevents the pollution of the inspection window by tar gases and explosions of gas in the gasifier (1).
- the sliding cover (12.2) is opened when there is high vacuum in gasifier (1) and thus it helps to extract the tar gases in the drying zone (3).
- the inspection window (12.1) is located at the same place with the level indicator.
- the security valve (11) is used to prevent damage in the system for when there is a sudden pressure increase in the system and when there is gas accumulation at the drying zone at the pyrolysis (4) and drying zones of the gasifier (1) and when the gas can not find a path to outflow from the system.
- the thermocouple (13.2) located in the drying zone is used to transmit the heat information in this zone to the supervision room.
- the pressure meter (14, 14.1, 14.2) in the drying zone is used to check the vacuum power applied by the fan (24).
- the pressure meter (14.1) used during downdraft mode indicates the pressure of the syngas outlet.
- the other pressure meter (14.2) is used for the same purpose in the updraft mode.
- FIG. 1 The important portion of the gas is formed in the pyrolysis zone (4) .
- the syngas is brought to its desired condition, cleaned and reducted for its further processing.
- this zone ()4 is the oxygen free combustion zone. At the lack of oxygen the partial combustion reactions are realized here.
- the vibrator (10) located in the pyrolysis zone vibrates when the RDF flow is not proper.
- thermocouple (13.1) is used to transmit the heat information in the pyrolysis zone (4) to the supervision room.
- the hazardous waste spraying nozzles (20) are used to feed the hazardous waste into the gasifier (1). Sprayed liquid hazardous waste is completely mixed with the reactions and increase the syngas efficiency within the pyrolysis zone (4).
- the proportional valve (20.1) is used to feed the liquid hazardous waste into the gasifier in defined quantities.
- the next zone within the gasifier where the gas is processed is the oxidation zone (5).
- Air nozzles (4.2), lower air nozzles (4.3) for the downdraft working mode are located in the gasifier (1), and first air nozzles (4.3, 4.2) for downdraft mode and second air nozzles (4.5,4.6) for updraft mode are activated.
- the upper air nozzles (4.5) are located in an angular manner to lower air nozzles (16).
- the distance between the two air nozzles are defined according to the RDF properties and the ash quantity.
- the gap between the two air nozzles (4.2 and 4.3) forms the first oxidation zone (5). In this zone the heat and the carbon monoxide formation is high.
- the air nozzles (4.2 and 4.3) are made of high heat resistant high alloy stainless steel located separately from each other and parallel to the gasifier bed (1) so that they do not get clogged. Not all air nozzles can be activated at the same time.
- the air chamber (4.7) is active whereas for updraft mode, the air chamber (4.8) is active.
- Air entering from either (4.1) or from left or right air valves (6.2) can circulate through all of the nozzles (4.2, 4.3).
- the air nozzle (4.4) located at the upper side of the pyrolysis zone(4) for the downdraft mode is designed and located there to fix the level at the oxidation zone (5) and the pyrolysis zone (4).
- the Bouduard reactions are realized in the reduction zone (6) of the gasifier during the downdraft working mode. Active carbon content high materials such as ash and tar are found.
- the reduction reactions are completed in this zone (6) for the syngas sucked from pyrolysis zone (4), tar gas and the carbondioxide.
- the syngas, the gas mixture formed in pyrolysis zone (4) are directed to the reduction zone (6) and reducted when it is passing thru the tar and ash mixture.
- the ash needs to be discharged during the catalytic cracking reactions when the tar quantity is lowered and the ash content is high. Ash discharge timing is directly related to the retention time of the RDF in the reduction zone (6). There is the thermocouple (13.3) to transmit the heat information from this zone to the supervision room.
- the gasifier is positioned on a 50-70° angle to the ground so that oxidized RDF in tar and ash form can easily flow downward to the reduction zone.
- the parts active at the reaction zone (6) are upper air nozzles (4.5), lower air nozzles (4.6), air chamber (4.8), lower preheated air or oxygen inlet (6.2), proportional valve (6.4) for air or oxygen inlet, ash grate (7.1) at the gas outlet zone for creating centrifugal effect, vapour nozzles (7.2) for increasing the carbon monoxide and hydrogen quantity to enrich syngas, igniter (8.1), igniting system (10.1) for the arc formation, thermocouple (13.3), vapour proportional valve (15) to regulate vapour rate, refractory material inside the zone (7.4) to prevent heat dissolvement.
- the air flow into the air chamber (4.8) is regulated via the proportional valve (6.4) for air or oxygen inlet into the gasifier (1) during the updraft working mode and the valve (17) is opened to create vacuum.
- the ash formed in the reduction zone (6) follows the ash path (7.3) and is discharged to ash system (22) thru the ash carrier.
- the first threaded carrier (22.1) carries the big particulate ash from the water trap into the dry ash pool (22.4).
- the second threaded carrier is used to carry accumulated and suspended ash to the dry ash pool (22.4).
- the ash pallet (22.3) carries the bottom accumulating ash to the second threaded carrier (22.2). In order to decrease the ash content in the ash pool (22), dry ash pool that contains dehydrated ash.
- the ash discharge system is trapped into the pool with water in order to prevent the air leakage into the reduction zone (6) since there is vacuum effect in the gasifier (1).
- the inner holes of the ash grate (7.1) located in the ash part of the reduction zone are made out of high alloy stainless steel and the syngas formed in and moving from the pyrolysis zone (4) passes thru it.
- This grate (7.1) has catalytic effect on reduction process to provide more effective and simpler reactions.
- the active carbon rich tar kept by the grate (7.1) provides smooth flow of the syngas and carbon dioxide mixture. During this flow the catalysis effect of the grate takes place and both the carbon dioxide and methanization reactions are completed.
- the particles carried by the syngas formed in and carried from the pyrolysis zone (4) are dissolved on the grate (7.1) due to the catalytic effect and the syngas is conveyed to have the catalytic cracking by passing through these grates (7.1) by a centrifugal effect.
- RDF form to the system and lets the water to evaporate in the drying zone (3) and sucked into the reduction zone (6) by the vacuum effect and creates water gas effects and this is considered as the vapour resource.
- the third one is through the controlled suction of vapor from the ash pool at the ash discharge system thru the vacuum by causing the water vapour phase balance impaired.
- the vapour resulting from these three sources especially the one resulting from the vapour nozzles (7.2) complete the hydro cracking reactions since it is sucked by the char in the carbonated ash after the pyrolytic process.
- the hydrogen and carbon monoxide increases by promoting the gas combination.
- the gasifier is placed on a flexible wire (10.1) as a support in order to prevent loose joints and deformations on the gasifier (1) when it is working at high heat and vibration is applied. Thus, when the vibration is applied, the complete reactor shakes and joints do not loosen.
- RDF is weighed and passed thru the bottleneck (2).
- the RDF meets for the first time the heat in oxygen free environment in the bottleneck zone (2).
- the heat is appropriate for dehydrating the RDF that increases hydrogen with gasification.
- the vacuum inside the gasifier provides safe working conditions and the suction power of the fan (24) is just sufficient to provide gasification process continuity.
- Syngas pre-cooling and scrubbing unit (23) is also the same for both modes.
- the outlet syngas from the gasifier is precooled and cleaned.
- use of the vapor exchanger creates the difference from conventional systems.
- the organic gases containing energy (CO-CH4-C2H4-C3H8) face sudden temperature decrease in scrubber and they are let in water with tar, so the energy in the gas is highly lost.
- Without the vapor exchanger integration it is not possible to protect the syngas and to obtain an efficient gas after the scrubber.
- the heat is decreased in vapor exchanger without destroying the energy content in the organic gas.
- the particles are taken away without destroying the energy content in the organic gases.
- the gas combination proceeds after scrubber once its tar and solid particles are removed.
- the particles and tar formed in the pyrolysis zone are not filtrated and not reducted and that is how they are sucked because in updraft form, the syngas is not passing thru the ash and the feeding is realized in shorter period. Therefore less clean syngas is sucked from the system compared to the downdraft mode.
- the syngas zone (3.1) is activated during the updraft form.
- the valve (17) is opened for the updraft mode.
- the proportional valve (6.4) is opened and proportioned according to the fed material in order to create vacuum in the gasifier.
- the gas continues upwards to the outlet (3.2) under vacuum. However, since the tar gas formed in the pyrolysis zone (4) is also sucked and the syngas moves without being reducted.
- the zone which is 10 cm. away from the oxidation zone lower air nozzles (4.5,4.6) is the pyrolysis zone.
- the valves (18 and 6.3) are fully closed.
- igniters (8.1) are ignited and they are turned off after the ignition.
- the igniters (8.1) are located at each air chamber (4.7 and 4.8).
- igniters are located symmetrically to each other in air chamber (4.8). It is important to ignite them mutually at the oxidation zone during the start up.
- the syngas desired to be recovered under vacuum condition defines the amount of the RDF to be fed and expected ash amount will vary according to the elements in RDF.
- the proportional valve (6.4) is proportionally opened for creating vacuum. It is the first chamber where the air is introduced into the gasifier (1). The air inlet is regulated through the proportional valve (6.4). The air flows into the air chamber (4.8) under vacuum and from there it proceeds to the oxidation zone (5) to continue with the oxidation reactions.
- the stainless steel slope is designed for preventing the excess heat up in the air chamber by meeting the cold air.
- the hot syngas passes thru either oxygen or air inlet zone (6.2), the air coming in warms up and the syngas cools down.
- vapor is introduced to the reduction zone (6 ) thru the vapor nozzles (7.2) via proportional valves (15). These valves (15) are fully closed during the updraft mode and no vapor is introduced. There is no interruption during the switching between the downdraft and updraft modes.
- the air chamber (4.7) is the part where air meets and the valve is open (19) in the downdraft mode.
- air or oxygen is fed into the nozzles (4.4) in a controlled manner for the process to be properly continued.
- the proportional valve ise opened (6.3) for vacuum creation.
- the required amount of air is introduced by valve (6.3).
- the air comes into the air chamber (4.7) under vacuum and goes down to the oxidation zone (5) to continue reactions.
- the heat balance is created by cooling down the stainless steel slope by the cold air entering into the air chamber.
- the hot syngas passes thru the oxygen inlet (4.1) so the inlet air is heated up and outlet syngas is cooled down.
- valve (18) is fully open and the proportional valve (6.3) is proportionally open to create vacuum.
- the valves (17 and 6.4) are fully closed.
- the igniters (8) are activated and they are turned off after ignition.
- the igniters (8) are located in each air chamber (4.7 and 4.8). Once the process starts, they are deactivated.
- the igniters are positioned symmetrically in the air chamber (4.7).
- the igniters are fed thru the LPG system.
- the end point of igniters are located in between the air nozzles (4.2 and 4.3). It is important to ignite the igniters mutually on the oxidation zone simultaneously. There is no continuous LPG feeding.
Landscapes
- 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)
Abstract
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TR200707958 | 2007-11-19 | ||
PCT/IB2008/050007 WO2009066187A1 (fr) | 2007-11-19 | 2008-01-03 | Gazéificateur et procédés de gazéification l'utilisant |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2231829A1 true EP2231829A1 (fr) | 2010-09-29 |
Family
ID=40084363
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08702378A Withdrawn EP2231829A1 (fr) | 2007-11-19 | 2008-01-03 | Gazéificateur et procédés de gazéification l'utilisant |
Country Status (4)
Country | Link |
---|---|
US (1) | US20110005135A1 (fr) |
EP (1) | EP2231829A1 (fr) |
EA (1) | EA017588B1 (fr) |
WO (1) | WO2009066187A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9416006B2 (en) * | 2013-09-17 | 2016-08-16 | Ineos Bio Sa | Thermal decomposition process for reducing agglomerate formation |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5028241A (en) * | 1989-07-13 | 1991-07-02 | Set Technology B.V. | Down-draft fixed bed gasifier system |
US6112677A (en) * | 1996-03-07 | 2000-09-05 | Sevar Entsorgungsanlagen Gmbh | Down-draft fixed bed gasifier system and use thereof |
WO2001051591A1 (fr) * | 2000-01-10 | 2001-07-19 | Fuerst Adrian | Dispositif et procede pour produire des gaz combustibles |
GB0325668D0 (en) * | 2003-11-04 | 2003-12-10 | Dogru Murat | Intensified and minaturized gasifier with multiple air injection and catalytic bed |
DE102004010407B4 (de) * | 2004-03-01 | 2013-02-21 | Kbi International Ltd. | Reaktor zur thermischen Abfallbehandlung |
DE102004016993B4 (de) * | 2004-04-02 | 2014-11-06 | Kbi International Ltd. | Reaktor zur thermischen Abfallbehandlung mit einem Zuführkanal und Verfahren zur thermischen Abfallbehandlung |
AT505188B1 (de) * | 2004-08-27 | 2009-06-15 | Schiefer Erwin | Reaktor zur vergasung von biomasse |
WO2007081296A1 (fr) | 2006-01-16 | 2007-07-19 | Gep Yesil Enerji Uretim Teknolojileri Ltd. Sti. | Gazogene a ecoulement descendant/ascendant pour production de gaz de synthese a partir de dechets solides |
US20070169411A1 (en) | 2006-01-25 | 2007-07-26 | Thiessen Randall J | Rotating bed gasifier |
US7736402B2 (en) * | 2006-07-11 | 2010-06-15 | Crorey Jr William G | Biomass gasifier |
TR200705430A2 (tr) * | 2007-08-03 | 2008-12-22 | Detes Maden Enerji̇ Ve Çevre Teknoloji̇si̇ Si̇stemleri̇ Li̇mi̇ted Şi̇rketi̇ | Katı yakıt gazlaştırma ve gaz temizleme sistemi. |
-
2008
- 2008-01-03 US US12/743,768 patent/US20110005135A1/en not_active Abandoned
- 2008-01-03 EP EP08702378A patent/EP2231829A1/fr not_active Withdrawn
- 2008-01-03 EA EA201000835A patent/EA017588B1/ru not_active IP Right Cessation
- 2008-01-03 WO PCT/IB2008/050007 patent/WO2009066187A1/fr active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2009066187A1 * |
Also Published As
Publication number | Publication date |
---|---|
EA017588B1 (ru) | 2013-01-30 |
WO2009066187A1 (fr) | 2009-05-28 |
US20110005135A1 (en) | 2011-01-13 |
EA201000835A1 (ru) | 2011-06-30 |
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