EP3701191A1 - Procédé pour purifier un gaz brut et dispositif de purification - Google Patents

Procédé pour purifier un gaz brut et dispositif de purification

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Publication number
EP3701191A1
EP3701191A1 EP19805884.4A EP19805884A EP3701191A1 EP 3701191 A1 EP3701191 A1 EP 3701191A1 EP 19805884 A EP19805884 A EP 19805884A EP 3701191 A1 EP3701191 A1 EP 3701191A1
Authority
EP
European Patent Office
Prior art keywords
flow
gas stream
raw gas
stream
oxidizer
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.)
Granted
Application number
EP19805884.4A
Other languages
German (de)
English (en)
Other versions
EP3701191B1 (fr
Inventor
Matthias Hänel
Christian Eichhorn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Duerr Systems AG
Original Assignee
Duerr Systems AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Duerr Systems AG filed Critical Duerr Systems AG
Publication of EP3701191A1 publication Critical patent/EP3701191A1/fr
Application granted granted Critical
Publication of EP3701191B1 publication Critical patent/EP3701191B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F23G7/065—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel
    • F23G7/066—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator
    • F23G7/068—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating using gaseous or liquid fuel preheating the waste gas by the heat of the combustion, e.g. recuperation type incinerator using regenerative heat recovery means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
    • F23G7/061—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases with supplementary heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N3/00—Regulating air supply or draught
    • F23N3/002—Regulating air supply or draught using electronic means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D17/00—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles
    • F28D17/02—Regenerative heat-exchange apparatus in which a stationary intermediate heat-transfer medium or body is contacted successively by each heat-exchange medium, e.g. using granular particles using rigid bodies, e.g. of porous material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/40—Gasification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2206/00—Waste heat recuperation
    • F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2241/00—Applications
    • F23N2241/18—Incinerating apparatus

Definitions

  • the present invention relates to the field of raw gas purification.
  • the present invention relates to the cleaning of raw gas containing water vapor, which carries organic contaminants, in particular vapor vapor, for eliminating odors and / or converting exhaust gases.
  • the present invention relates to a cleaning device for carrying out a raw gas / vapor vapor cleaning method.
  • the raw gas cleaning can be carried out in particular for odor removal using thermal systems, for example regenerative thermal oxidation systems.
  • thermal systems for example regenerative thermal oxidation systems.
  • This high energy expenditure is mostly due to the fact that a separation process is often first carried out in order to separate water with, for example, organic dust, in particular fat, oil and / or protein particles, from the raw gas.
  • a separation process is often first carried out in order to separate water with, for example, organic dust, in particular fat, oil and / or protein particles, from the raw gas.
  • the raw gas stream supplied to the thermal plant for raw gas cleaning is lost to oxidizable substances with a significant calorific value, which reduces the efficiency of the thermal conversion.
  • the substances resulting from the separation process have to be post-processed and / or specially disposed of as special waste.
  • the present invention has for its object a method for cleaning a steam-containing raw gas stream, in particular
  • Vapor vapor with organic contaminants which is simple and cost-effective to carry out.
  • the method comprises the following:
  • the organic substances contained in the raw gas stream preferably react
  • the contaminants are or include in particular liquid ones
  • Impurities and / or solid impurities and / or gaseous impurities are Impurities and / or solid impurities and / or gaseous impurities.
  • the raw gas stream is first reformed in the process according to the invention and is only subsequently thermally converted by supplying oxidizer, preferably air, fresh air, ambient air, oxygen-containing exhaust air, process exhaust air, etc.
  • oxidizer preferably air, fresh air, ambient air, oxygen-containing exhaust air, process exhaust air, etc.
  • a calorific value contained in the raw gas stream can preferably be used in the oxidation and thus enable a fuel-saving or otherwise energy-saving thermal raw gas cleaning.
  • such a method is preferred comparatively simple and inexpensive, because there is no need for a previous separation step.
  • the clean gas stream is fed to a heat exchanger, in particular a condenser, and that water vapor contained in the clean gas stream is condensed by means of the heat exchanger, in particular by means of the condenser.
  • a volume and / or volume flow of the clean gas flow in the clean gas discharge can be reduced, as a result of which an energy-efficient flow through the cleaning device can ultimately be obtainable.
  • the chemical reaction in the reforming area is preferably an allothermic and / or hydrothermal gasification.
  • a water gas shift reaction preferably in the first flow space, can be advantageous for the energy requirements of steam reforming.
  • the chemical reaction in the oxidation region is a reaction with support energy and / or an autothermal oxidation.
  • the water vapor of the raw gas stream containing water vapor preferably serves as the gasification medium, in particular in the reforming area.
  • a reaction with support energy is preferably one
  • the process can preferably be carried out with any thermal regenerative exhaust air purification system (TRA).
  • TRA thermal regenerative exhaust air purification system
  • the solution according to the invention can be carried out not only with the embodiments of a cleaning device shown by way of example in the attached figures, but rather also with numerous variants thereof.
  • linearly arranged regenerator chambers can be used as
  • Flow spaces may be provided.
  • Rotating systems can also be used be provided, in particular rotary slide devices according to the
  • EP 0 548 630 Al The method can also preferably be carried out on oxidizers such as the product "Vocsidizer®" from MEGTEC SYSTEMS, INC. be carried out according to WO 01/88436 A1. Furthermore, the method can preferably also be carried out on one of those systems which are in one or more of the following
  • a cleaning device which comprises a plurality of flow spaces, a first of the flow spaces at least temporarily forming the reforming area and a second of the flow spaces at least temporarily forming a heat storage area to which the clean gas stream is fed .
  • the cleaning device comprises at least one third flow space, which at least temporarily forms a preheating area, to which the oxidizer stream is fed for preheating before the oxidizer stream is fed to the oxidation area.
  • the raw gas stream and / or the clean gas stream and / or the oxidizer stream is supplied cyclically / alternately to different flow spaces, so that the flow spaces alternately form the reforming area and / or the heat storage area and / or the preheating area.
  • the flow spaces are preferably flowed through in different directions, depending on whether the respective flow space forms a reforming area or a heat storage area.
  • a main flow direction in a flow space if it forms a reforming area, is opposite to a main flow direction in the same flow space, if it forms the heat storage area.
  • the flow spaces are preferably heated and cooled alternately, in particular heated by means of the clean gas stream and / or cooled by means of the raw gas stream and / or the oxidizer stream.
  • the flow paths are switched cyclically / alternately and / or preferably based on the energy balance of the
  • EP 1 906 088 B1 is known (also known as the XtraBalance® method).
  • the flow spaces are preferably provided with a heat storage material, for example at least partially filled with a heat storage material.
  • the heat storage material is or preferably comprises a composition of various ceramic materials (for example material which is known under the brand XtraComb®). “Composition” is preferably also to be understood as a stratification of storage elements, storage bodies or storage blocks, the storage elements, storage bodies or storage blocks being inhomogeneous, for example in layers or layers, in particular in the vertical composition or stacking.
  • the heat storage material can in particular comprise or be formed from densely burned and / or smooth and / or highly porous and / or coated with a catalyst material and / or ceramic storage material.
  • the heat storage material can preferably be a composition of densely burned storage material and / or smooth storage material and / or highly porous storage material and / or storage material coated with a catalyst material and / or ceramic storage material.
  • the raw gas stream has an oxidizer content, in particular oxygen content, of less than 5% by volume, in particular less than 3% by volume, preferably less than 1% by volume.
  • the raw gas flow is in particular vapor.
  • the raw gas stream is preferably saturated with water vapor.
  • the raw gas stream is preferably fed to the reforming area without the addition of further media.
  • no oxidant-containing gas stream is preferably fed to the raw gas stream before the raw gas stream is fed to the reforming area.
  • the raw gas stream is preferably heated to at least approximately 600 ° C., in particular to at least approximately 750 ° C., for example to at least approximately 800 ° C., particularly preferably to at least 850 ° C.
  • the raw gas flow in the reforming area and / or the clean gas flow in a heat storage area and / or the oxidizer flow in a preheating area are each led through a heat storage unit of a heat storage device, one or more or all of the heat storage units in particular ceramic flow bodies, for example molded ceramic flow bodies, are formed or include such.
  • the preferably porous surfaces of the ceramic flow bodies are particularly effective as an acceleration factor of the allothermal and / or hydrothermal gasification.
  • the heat storage units preferably have catalytic materials, for example a catalytic coating and / or catalytically active constituents.
  • the raw gas stream is heated before being fed to the reforming area and / or the oxidizer stream is before and / or after being fed to a preheating area by means of a heat exchanger and / or a heating device.
  • a heating device is a burner, for example a gas and / or oil burner, or comprises one.
  • the heating device can also comprise an electrical heating device, for example an infrared heater, a resistance heater and / or the like.
  • the heat transfer to the raw gas stream and / or the oxidizer stream can take place directly by supplying a heating gas stream or indirectly via a heat exchanger.
  • the raw gas stream and / or the oxidizer stream are heated to at least approximately 90 ° C., for example at least approximately 95 ° C., preferably at least approximately 100 ° C., in particular in order to condense water in the region of the Avoid cleaning device, especially the thermal exhaust air cleaning system.
  • the clean gas stream is first fed to a heat storage area and then to a downstream heat exchanger, the clean gas stream being cooled by means of the heat exchanger in particular to such an extent that condensate forms and thereby initially transfers heat contained in the clean gas stream to the heat exchanger and / or is otherwise made usable.
  • the reduction in the clean gas volume flow through the is advantageous for the energy requirement for conveying the raw gas and clean gas flow
  • the oxidizer stream is fed past the reforming area and / or independently of a flow path of the raw gas stream to the oxidation area.
  • the oxidizer flow is preferably fed through a flow space separate from the flow space that forms the reforming area to the oxidation area.
  • Mass flow and / or the volume flow of the oxidizer flow is controlled and / or regulated depending on a mass flow and / or volume flow of the raw gas flow and / or depending on an oxygen content in the outflowing clean gas flow.
  • the control and / or regulation takes place in such a way that in the oxidation area and / or in a clean gas discharge a predetermined oxidizer content and / or a
  • the impurities contained in the raw gas stream are split up and converted in the reforming area, in particular by steam reforming.
  • a reformed raw gas stream obtainable thereby comprises in particular gaseous oxidizable and / or organic substances, for example hydrogen, methane and / or
  • steam reforming takes place on a porous and / or ceramic surface of heat storage units in at least one flow space.
  • An oxidizer in particular oxygen, which may still be present in the raw gas stream, can be used to supply part of the energy required for steam reforming, in particular by partial oxidation of hydrocarbons, as a result of which carbon monoxide is formed, for example.
  • a major part of the activation energy required for steam reforming is preferably provided by heat storage material and / or one
  • Flow spaces may be provided.
  • At least one is preferably always used by means of the oxidizer stream
  • the clean gas flow is preferably always at least one
  • the raw gas stream is preferably used in at least one
  • organic constituents of the raw gas stream preferably react with the oxidizer from the oxidizer stream.
  • the water vapor share and the reduced compared to the ambient air ensure
  • heat storage material which is effective to accelerate the reaction is preferably provided.
  • This surface-enlarging heat storage material preferably enables post-oxidation in the upper heat storage area of the flow spaces in particular, in order to convert and / or render residual impurities still present in the clean gas stream, in particular incompletely oxidized substances.
  • Heat removed from the clean gas stream by means of a heat exchanger can be used in particular for preheating process exhaust air and / or ambient air, in particular before being supplied as an oxidizer stream. Condensate is preferably fed back into a production process.
  • the invention is based on the further object of providing a cleaning device for cleaning a raw gas stream which is simple in construction and can be operated cost-effectively.
  • the cleaning device comprising: a raw gas supply for supplying the raw gas stream to a reforming area of the cleaning device, in which organic contaminants contained in the raw gas stream with those contained in the raw gas stream
  • an oxidizer feed for feeding an oxidizer stream to an oxidation region of the cleaning device, in which components of the reformed raw gas stream react chemically with oxidizer of the oxidizer stream, whereby a clean gas stream is obtainable.
  • the cleaning device according to the invention is particularly suitable for carrying out the method according to the invention.
  • the cleaning device preferably has one or more of the features and / or advantages described in connection with the method according to the invention.
  • the method according to the invention can have individual or more of the features and / or advantages described in connection with the cleaning device according to the invention.
  • the cleaning device preferably comprises a heat exchanger which is arranged in particular in the clean gas discharge and which is in particular a condenser.
  • Water vapor contained in the clean gas stream is preferably by means of the heat exchanger, in particular by means of the condenser condensable.
  • volume flow of the clean gas flow in the clean gas discharge can be reduced, whereby ultimately an energy-efficient flow through the cleaning device can be available.
  • a negative pressure below the ambient pressure can preferably be generated in the heat exchanger, in particular in the condenser, as a result of which the energy requirement for conveying the raw gas and clean gas stream for the raw gas cleaning can be reduced.
  • the cleaning device comprises a plurality of flow spaces, in particular provided with heat storage material, and a control device, the cleaning device being able to be put into different operating modes by means of the control device.
  • a first cleaning mode is by means of the raw gas supply
  • the raw gas stream can preferably be fed to at least a first of the flow spaces and the clean gas stream can be discharged by means of a clean gas discharge
  • This mode preferably runs in a cyclically recurring manner, in particular with all, but at least with at least two, flow spaces.
  • the cleaning device can be set by means of the control device into further operating modes, for example a second or third or fourth cleaning mode, in which further flow spaces for the passage of the raw gas flow and / or the
  • At least a third flow space is preferably flushed in at least one cleaning mode.
  • This at least one third flow space to which the oxidizer stream, in particular a fresh air stream, process exhaust air stream and / or process gas stream, can be fed, preferably contains a preheating device, in particular for heating the oxidizer stream, before this oxidizer stream flows upstream of the heat storage area
  • the cleaning device in particular comprises or forms a regenerative thermal oxidation device (RTO).
  • RTO regenerative thermal oxidation device
  • the cleaning device comprises a plurality of flow spaces through which the raw gas flow, the clean gas flow and / or the oxidizer flow can flow, the flow spaces each comprising a heat storage unit.
  • One or more or all of the heat storage units preferably have a layer structure made of different, temperature-resistant solid materials, in particular different heat storage materials.
  • one or more or all of the heat storage units can have one or more flow positions for influencing an inflow, through-flow or outflow of gas.
  • a layer structure made of different heat storage materials and / or flow materials is provided.
  • a first layer is formed from a densely fired ceramic material. This can in particular allow moisture to penetrate into the material, leading to the spread of odors,
  • Salt formation and blocking of the storage material can be avoided.
  • At least a second layer is preferably formed from alumina porcelain or similar storage material, this alumina porcelain or similar material being a higher one than the material of the first layer
  • a third layer preferably comprises a mullite material, preferably porous mullite material.
  • This mullite material preferably has a reaction-accelerating effect, which can result in particular from an increase in surface area and traces of metals in the material.
  • the fourth layer is, for example, a bed of turbulence-generating materials, for example saddle bodies and / or balls, whereby an optimized inflow of the reformed raw gas stream to the oxidation area and thus an optimized oxidation in the oxidation area can be achieved. Furthermore, this bed preferably enables the flow towards the clean gas flow space to be evened out and leads to a uniform energy delivery to the one located therein
  • Fig. 1 is a schematic representation of a first embodiment of a
  • FIG. 2 is a schematic representation corresponding to FIG. 1
  • Fig. 3 is a schematic representation of the corresponding to Fig. 1
  • Fig. 4 shows a schematic section through the construction of a
  • Heat storage unit of a heat storage device of the cleaning device
  • FIGS. 1 to 4 One shown in FIGS. 1 to 4, designated as a whole by 100
  • Cleaning device is used in particular for cleaning raw gas.
  • the cleaning device 100 is particularly suitable for cleaning vapor, which is also known as bread or vapors.
  • the cleaning device 100 in particular comprises a regenerative thermal oxidation device 102 for the thermal conversion of odorous substances and other impurities in the vapor.
  • the cleaning device 100 preferably comprises a reforming area 104, a heat storage area 106 and a preheating area 108.
  • the reforming area 104 is by means of a raw gas supply 110
  • the raw gas to be cleaned can be supplied.
  • the oxidizer and / or purge gas can preferably be supplied to the preheating region 108 via an oxidizer feed 112 and / or a purge gas feed 114. Furthermore, a clean gas discharge 116 of the cleaning device 100 is preferably provided, via which clean gas generated from the raw gas can be discharged.
  • the clean gas discharge 116 is thus, in particular, an exhaust gas discharge 118 of the cleaning device 100.
  • the clean gas discharge 116 connects in particular to the heat storage area 106 or comprises it.
  • a plurality of heat exchangers 120 of the cleaning device 100 are preferably used to heat or cool gas streams in order ultimately to optimize the energy efficiency of the cleaning device 100.
  • a heat storage device 122 of the cleaning device 100 is preferably provided, by means of which the heat generated in the cleaning device 100 can be temporarily stored and used again for optimized operation of the cleaning device 100.
  • the heat storage device 122 comprises, in particular, a plurality of heat storage units 124.
  • the cleaning device 100 comprises an oxidation area 126 which adjoins the reforming area 104 and the preheating area 108 and which in particular opens into the heat storage area 106.
  • the reforming area 104, the preheating area 108 and the heat storage area 106 are not stationary, but become dependent on the locations of the supply of raw gas and oxidizer and on the Removal of clean gas in a time-varying manner formed by different flow spaces 128 of the cleaning device 100.
  • Each flow space 128 in this case comprises a heat storage unit 124 of the heat storage device 122, so that heat can be supplied to or can be extracted from the flow spaces 128 depending on the respective gas supply or gas discharge.
  • One or more optional heating devices of the cleaning device 100 can additionally contribute to the heat storage device 122 and / or in addition to the heat exchangers 120 to optimize the operation of the cleaning device 100.
  • the heat storage units 124 in the flow spaces 128 are preferably provided with a layer structure.
  • a first layer 130a is provided in particular, which is formed, for example, from a densely fired ceramic material.
  • a second layer 130b adjoining the first layer 130a is
  • a third layer 130c adjoining the second layer 130b comprises, for example, a mullite material which has a reaction-accelerating effect and contributes to the optimization of reaction-kinetic processes within the flow space 128.
  • a fourth layer 130d adjoining the third layer 130c preferably serves to optimize the inflow to the oxidation region 126 adjoining the heat storage unit 124.
  • the fourth layer 130d has, for example, a bed made of a turbulence-generating material, for example saddle bodies .
  • the heat storage unit 124 serves as the reforming area 104 of the cleaning device 100.
  • the cleaning device 100 preferably comprises an oxidizer sensor 140, in particular for the detection of oxygen, which controls or regulates the volume flow of the oxidizer supplied via the oxidizer feed 112 by means of a control unit 141.
  • the oxidizer preferably one
  • the embodiment of the cleaning device 100 shown in FIGS. 1 to 4 preferably functions as follows: A raw gas, for example in the form of vapor, is led via the raw gas supply 110 to a first flow space 128a, which forms the reforming area 104.
  • a heat storage unit 124 is arranged in this first flow space 128a, for example in accordance with the embodiment shown schematically in FIG. 4.
  • This heat storage unit 124 was loaded with heat before the supply of the raw gas, so that the raw gas now supplied is heated by means of the heat storage unit 124.
  • a reformed raw gas for example water gas
  • hydrocarbons and water results in particular from hydrocarbons and water.
  • long-chain hydrocarbons and low-volatility hydrocarbons are largely converted into methane, carbon monoxide, hydrogen and other highly flammable substances.
  • the raw gas has a very low oxygen content of less than 5% by volume, in particular a maximum of approximately 1% by volume, so that the easily combustible constituents in the reforming area 104 do not oxidize, but rather can be passed on from the reforming area 104 into the oxidation area 126 .
  • the entire raw gas stream which was passed through the reforming area 104 is fed as a reformed raw gas stream to the oxidation area 126.
  • the reformed raw gas stream meets an oxidizer-containing gas stream, in particular an oxidizer stream.
  • the oxidizer stream is in particular air or an air mixture or an oxidizer-containing, in particular oxygen-containing, process gas.
  • the oxidizer flow is fed via the oxidizer feed 112 to a third flow space 128c. Care is taken to ensure that the temperature of the oxidizer stream is at least approximately 100 ° C. or more, for example at least 100 ° C., preferably at least approximately 110 ° C. In this way, undesirable condensation of water can preferably be avoided.
  • Heat exchanger 120 the oxidizer stream can be heated. This is preferably preheating.
  • the target temperature of the oxidizer stream is preferably at least 750 ° C., for example at least approximately 800 ° C., in particular approximately 850 ° C.
  • This heating to the target temperature is achieved in the flow space 128 in particular in that the third flow space 128c also has a heat storage unit 124, for example in accordance with the embodiment shown in FIG. 4.
  • This heat storage unit 124 is preferably heated before the supply of the oxidizer stream, for example using the clean gas stream.
  • the oxidizer stream preferably has an oxygen content of at least approximately 15% by volume, for example at least approximately 18% by volume.
  • the combination of the heated, reformed raw gas stream with the heated oxidizer stream in the oxidation region 126 leads to an oxidation of the combustible components of the reformed raw gas stream in the oxidation region 126, whereby in particular hydrocarbons, carbon monoxide and hydrogen from the reformed raw gas stream are oxidized, in particular to carbon dioxide and water.
  • This heat storage unit 124 is preferably a heat storage unit 124 corresponding to the embodiment shown in FIG. 4.
  • the clean gas After flowing through the second flow space 128b forming the heat storage area 106, the clean gas is discharged via the clean gas discharge 116.
  • the amount of heat still remaining in the clean gas can preferably be at least partially removed from the clean gas flow and thus made usable in another way.
  • the cleaning operation of the cleaning device 100 described above can preferably be maintained until the heat quantities stored in the heat storage units 124 of the first and third flow spaces 128a, 128c are no longer sufficient for heating the Raw gas stream and / or the oxidizer stream or no longer suffice for a sufficient reaction in the reforming area 104.
  • the time of the changeover is preferably determined by measurement, calculation or other determination of the energy content in the flow spaces, in particular by carrying out an energy comparison of the flow spaces using a control module, for example the XtraBalance control module.
  • the cleaning device 100 is preferably switched to a purging mode by means of a control device 115 (see FIG. 2), in which the third flow space 128c is briefly applied, for example by means of a purging gas supply 114
  • Raw gas and purge gas and / or the second flow chamber 128b are supplied with clean gas to the first flow chamber 128a.
  • the purge gas which for example
  • the heat storage units 124 are cleaned in order to ultimately avoid an undesired emission of odorous substances or harmful gases in the event of a subsequent flow reversal.
  • the heat storage unit 124 arranged in the second flow space 128b was finally strongly heated beforehand due to the supply of the clean gas stream and thus now forms a sufficient heat source for carrying out the reforming process for reforming the raw gas stream.
  • the first flow chamber 128a which previously formed the reforming region 104, now accordingly forms the purge region 108, so that the clean gas flow generated in the oxidation region 126 is now discharged via the third flow chamber 128c.
  • the heat storage unit 124 arranged in the third flow space 128c is thereby heated and thus prepared for later use as a reforming area 104 or also as a preheating area 108.
  • the third flow chamber 128c forming the preheating region 108 in FIGS. 1, 2 and 3 is also used at regular intervals to discharge / discharge the clean gas (see FIG. 3) and thereby for re-use as a preheating region 108 or also as a reforming region 104 prepared.
  • the control of the oxidizer feed 112 takes place in particular depending on an oxygen content in the clean gas stream.
  • the amount of oxidizer in particular the oxidizer volume flow and / or the oxidizer mass flow, is preferably controlled and / or regulated in such a way that there is reliable oxidation of the substances contained in the reformed raw gas stream in the oxidation region 126.
  • the corresponding regulation can take place, for example, as a function of temperature, oxygen or a composition of the clean gas flow.
  • the cleaning device 100 Because in the cleaning device 100 described, a reformed raw gas stream is generated from a raw gas stream before it is chemically reacted with oxidizer, the cleaning device 100 can be operated in a particularly simple and cost-effective manner. In addition, additional devices such as separators and washers can be avoided.
  • the clean gas flow is fed to a condenser, in particular one in the clean gas exhaust guide 116 arranged heat exchanger 120, which is designed as a condenser.
  • the volume of the clean gas flow can hereby
  • the condenser can thus preferably generate a negative pressure below the ambient pressure, as a result of which the energy requirement for conveying the raw gas and clean gas stream for the raw gas cleaning can be reduced.

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  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Dispersion Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Hydrogen, Water And Hydrids (AREA)

Abstract

L'invention concerne un procédé pour la purification d'un flux de gaz brut contenant de la vapeur d'eau, qui peut être réalisé de manière simple et économiquement efficace comprenant les étapes suivantes: introduire le flux de gaz brut dans une zone de reformage, dans laquelle des impuretés contenues dans le flux de gaz brut réagissent chimiquement avec la vapeur d'eau contenue dans le flux de gaz brut, un flux de gaz brut réformé étant obtenu ; introduire le flux de gaz réformé ainsi qu'un flux d'agent d'oxydation dans une zone d'oxydation dans laquelle des constituants du flux de gaz brut réformé réagissent chimiquement avec l'agent d'oxydation du flux d'agent d'oxydation, un flux de gaz pur étant obtenu. L'invention concerne également une régulation éventuelle de la teneur en oxygène. En outre, éventuellement, le flux de gaz brut est introduit dans un condenseur, ce qui réduit le flux volumique du flux de gaz pur et/ou ce qui permet de récupérer de l'énergie qui peut être utilisée pour le préchauffage de l'agent d'oxydation ou pour d'autres procédés de production.
EP19805884.4A 2018-11-08 2019-10-30 Procédé pour purifier un gaz brut et dispositif de purification Active EP3701191B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018219105.0A DE102018219105A1 (de) 2018-11-08 2018-11-08 Verfahren zur Reinigung eines Rohgasstroms und Reinigungsvorrichtung
PCT/DE2019/100937 WO2020094183A1 (fr) 2018-11-08 2019-10-30 Procédé pour purifier un gaz brut et dispositif de purification

Publications (2)

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EP3701191A1 true EP3701191A1 (fr) 2020-09-02
EP3701191B1 EP3701191B1 (fr) 2022-04-27

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US (1) US20220003412A1 (fr)
EP (1) EP3701191B1 (fr)
CN (1) CN113167469A (fr)
BR (1) BR112021006652A2 (fr)
CL (2) CL2021001115A1 (fr)
DE (2) DE102018219105A1 (fr)
ES (1) ES2914423T3 (fr)
PT (1) PT3701191T (fr)
WO (1) WO2020094183A1 (fr)

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
DE4142136C2 (de) 1991-12-20 1994-07-21 Eisenmann Kg Maschbau Vorrichtung zum Reiniguen schadstoffhaltiger Abluft aus Industrieanlagen durch regenerative Nachverbrennung
US5364259A (en) * 1993-03-10 1994-11-15 Monsanto Enviro-Chem Systems, Inc. Process and apparatus for gas phase reaction in a regenerative incinerator
US5427746A (en) 1994-03-08 1995-06-27 W. R. Grace & Co.-Conn. Flow modification devices for reducing emissions from thermal voc oxidizers
JP3063622B2 (ja) * 1996-05-28 2000-07-12 株式会社日立製作所 ごみ発電システム及びごみ処理システム
SE515710C2 (sv) 2000-02-11 2001-10-01 Bjoern Heed Luftskåp vid en regenerativ förbränningsanordning
US6264464B1 (en) 2000-05-12 2001-07-24 Megtec Systems, Inc. Angled bed for regenerative heat exchanger
DE10149807B4 (de) * 2001-10-09 2007-12-27 Herhof Verwaltungsgesellschaft Mbh Verfahren und Vorrichtung zum Reinigen von Abgasen, die heizwerthaltige Substanzen, insbesondere Schadstoffpartikel und/oder Geruchspartikel, enthalten
DE102007032952B4 (de) 2006-09-12 2010-07-08 Kba-Metalprint Gmbh Verfahren zum Betreiben einer thermisch-regenerativen Abluftreinigungsanlage
JP2010532909A (ja) * 2007-03-06 2010-10-14 セラムテック アクチエンゲゼルシャフト 空気／溶剤混合物を燃料電池システムおよび回収ユニットで環境保護的に除去するための方法
DE102011002612A1 (de) * 2011-01-13 2012-07-19 Siemens Aktiengesellschaft Verfahren zur Behandlung eines kohlendioxidhaltigen Abgases
US10184659B2 (en) * 2015-04-15 2019-01-22 Praxair Technology, Inc. Low-NOx combustion method

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Publication number Publication date
WO2020094183A1 (fr) 2020-05-14
ES2914423T3 (es) 2022-06-10
BR112021006652A2 (pt) 2021-07-13
PT3701191T (pt) 2022-05-19
CN113167469A (zh) 2021-07-23
DE112019005585A5 (de) 2021-09-02
DE102018219105A1 (de) 2020-05-14
EP3701191B1 (fr) 2022-04-27
US20220003412A1 (en) 2022-01-06
CL2021001115A1 (es) 2021-11-19
CL2022000728A1 (es) 2022-11-11

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