WO2010085835A1 - Système et procédé pour l'atténuation de l'effet d'au moins un constituant à partir d'un flux de fluide - Google Patents

Système et procédé pour l'atténuation de l'effet d'au moins un constituant à partir d'un flux de fluide Download PDF

Info

Publication number
WO2010085835A1
WO2010085835A1 PCT/AU2009/001708 AU2009001708W WO2010085835A1 WO 2010085835 A1 WO2010085835 A1 WO 2010085835A1 AU 2009001708 W AU2009001708 W AU 2009001708W WO 2010085835 A1 WO2010085835 A1 WO 2010085835A1
Authority
WO
WIPO (PCT)
Prior art keywords
body portion
bores
combustion module
gaseous feed
opposing
Prior art date
Application number
PCT/AU2009/001708
Other languages
English (en)
Inventor
Shi Su
Original Assignee
Commonwealth Scientific And Industrial Research Organisation
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
Priority claimed from AU2009900335A external-priority patent/AU2009900335A0/en
Application filed by Commonwealth Scientific And Industrial Research Organisation filed Critical Commonwealth Scientific And Industrial Research Organisation
Priority to AU2009338680A priority Critical patent/AU2009338680B2/en
Publication of WO2010085835A1 publication Critical patent/WO2010085835A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/81—Solid phase processes
    • B01D53/82—Solid phase processes with stationary reactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/864—Removing carbon monoxide or hydrocarbons
    • 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
    • F23G7/07—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases in which combustion takes place in the presence of catalytic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/104—Alumina
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10—Inorganic adsorbents
    • B01D2253/106—Silica or silicates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/30—Physical properties of adsorbents
    • B01D2253/34—Specific shapes
    • B01D2253/342—Monoliths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1021—Platinum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2255/00—Catalysts
    • B01D2255/10—Noble metals or compounds thereof
    • B01D2255/102—Platinum group metals
    • B01D2255/1023—Palladium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/50—Carbon oxides
    • B01D2257/504—Carbon dioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/702—Hydrocarbons
    • B01D2257/7022—Aliphatic hydrocarbons
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/20—Capture or disposal of greenhouse gases of methane
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2

Definitions

  • the present invention relates to systems and methods for mitigating at least one component, such as methane, from a fluid stream, such as mine ventilation air.
  • the present invention also relates to combustion modules for use in such systems and methods.
  • a component or components from a fluid stream is a gaseous emission from a process which contains compounds which are harmful to humans and/or the environment.
  • examples of such compounds include volatile low molecular weight hydrocarbons such as methane.
  • Fugitive methane emissions occur from a variety of sources including coal, oil and gas production, transport, mining, agriculture, waste disposal, livestock, and land use (forestry). In fact, depending on coal mine site specifications, approximately 50-85% of all coal mining related methane is emitted to the atmosphere in mine ventilation air.
  • the present invention aims to provide alternative systems and methods for mitigating one or more components from a fluid stream, in particular methane from mine ventilation air. Furthermore, the invention aims to provide combustion modules for use in such systems and methods.
  • a system for mitigating a volatile component from a gaseous feed including: an inlet in fluid communication with the gaseous feed; a combustion module for mitigating the volatile component from the gaseous feed; a control device for controlling flow of the gaseous feed through the combustion module between a forward flow cycle and a reverse flow cycle; and an outlet through which a gaseous emission from which the volatile component has been mitigated may be emitted from the system; wherein said combustion module includes a body portion formed from a refractory material and having a plurality of bores extending from a first end thereof to an opposing second end thereof, the bores facilitating the flow of the gaseous feed through the body portion and transfer of heat to the gaseous feed, thereby mitigating the volatile component in use.
  • bore includes within its scope individual discrete channels extending through the body portion and includes connected channels that form a network extending within and through the body portion.
  • the term includes channels formed subsequent to formation of the body portion, for example by drilling or the like, and also includes channels formed during formation of the body portion, for example during moulding of the body portion.
  • the provision of bores extending through the body portion facilitates passage of the gaseous feed through the combustion module with minimal pressure drop. This in turn improves operational costs of the system relative to prior art models. Also, for high dust environments, such as seen in ventilation air from coal mines, clogging of the bores is less of an issue compared with prior art models.
  • the gaseous feed is ventilation air derived from a coal mine and the volatile component is methane.
  • the system of the invention is not so limited.
  • the system may be equally applicable to other applications involving the mitigation of a volatile component from a gaseous feed, such as mitigation of methane from other sources including oil and gas production, waste disposal, livestock and land use (forestry) as discussed above. Additional applications of the system will be appreciated by those in the art and are considered to fall within the scope of the system of the invention.
  • the combustion module be orientated such that the bores are disposed parallel with the flow of the gaseous feed. It may be, though, that in certain applications the combustion module may be orientated such that the bores are disposed on an angle to the flow of the gaseous feed. This may be determined on a case by case basis.
  • the body portion of the combustion module defines a multi-passage structure. That is, the bores are disposed in the body portion in an array. The bores will generally be disposed across the entire cross section of the body portion.
  • the width, which as used herein includes reference to diameter, of each bore is preferably from about 1mm to about 100mm. More preferably, the width of the bores is from about 5mm to about 20mm and even more preferably about 10mm.
  • the width of the bores may or may not be constant across the length of the bores. Preferably, however, each of the bores has a width that is constant across their length.
  • the width of bores within the body portion may or may not be uniform. Generally, it will be desirable that all of the bores in the body portion be of identical or similar width. However, it is envisaged that in certain applications it may be suitable for some bores to have a larger width than others. This may be somewhat dependent on the particular field of use, or volume of gas to be passed through the article.
  • the bores may be of regular or irregular cross sectional shape.
  • the bores are regular in cross sectional shape and extend parallel to one another from the first end of the body portion to the opposing second end of the body portion.
  • the cross sectional shape of the bores is not intended to be limited in any way.
  • the bores may have a square, triangular, circular, hexagonal, octagonal or pentagonal cross sectional shape.
  • the bores have a circular cross sectional shape.
  • the body portion includes internal walls that define the bores and that separate them from one another. It will be appreciated that the width of the internal walls may or may not be constant along their length. Preferably, the width of the internal walls is constant along the length of the internal walls. Moreover, the width of individual internal walls may differ compared with other internal walls. In that regard, it will be appreciated that the width and cross sectional shape of the bores will affect the width and shape of the internal walls.
  • the spacing of the bores may be dependent on the particular field of application. Generally, it will be preferable for the bores to be spaced apart at a distance of from about 2mm to about 200mm, more preferably about 15mm to about 35mm. In that regard, the distance between the bores as used herein is intended to mean the distance between a centre point of a bore to a centre point of an adjacent bore or bores.
  • the height of the body portion is not intended to be particularly limited.
  • the height of the body portion may be up to about 5 metres. More preferably, the height of the body portion is from about 1 metre to about 4 metres, even more preferably from about 1.5 metres to about 3 metres. Again, it will be appreciated that the height of the body portion will be somewhat dependent on the field of application of the system of the invention.
  • the body portion may be cubic, cylindrical or prismatic in shape.
  • the body portion may be a prism of triangular, rectangular, square, pentagonal, hexagonal, or octagonal shape.
  • the body portion is square or rectangular prismatic such that the body portion complements a housing in which it is fitted.
  • the body portion of the combustion module may be manufactured from any suitable refractory material.
  • the refractory material is a ceramic material, alumina, silica, magnesia, lime, fireclays, zirconia, dolomite, mullite, castable refractory cement or mixtures thereof.
  • the body portion need not be a unitary article.
  • the body portion may consist of a number of segments or blocks having the desired physical characteristics of the body portion.
  • the body portion may contain at least one catalyst to assist with mitigation of the component(s) from the fluid stream.
  • the body portion may include at least one catalyst coated on internal walls of the bores, or disposed in the refractory material.
  • the type of catalyst may depend on the component(s) to be mitigated and the environmental conditions in which the article is used. For example, for methane oxidation, Pd and Pt would be the best candidates. Table 1 summarises the kinetic data for selected catalysts.
  • a washcoat slurry of base metals such as alumina and ceria, on which the noble metal catalysts are placed can be coated on the internal walls of the bores.
  • the catalyst is located near the central section of the body portion along the flow direction.
  • One or more catalyst sections may be intermittently coated along the flow direction.
  • the control device advantageously facilitates control of the flow of the gaseous feed through the system. More particularly, in a particular embodiment during the forward cycle the gaseous feed is fed to the first end of the body portion at a relatively low inlet temperature and is heated within the body portion until combustion of the volatile component occurs resulting in emission of a relatively high temperature gaseous emission from the opposing second end and heating more towards the opposing second end of the body portion, and during the reverse cycle the gaseous feed having a relatively low inlet temperature is fed to the opposing second end of the body portion resulting in emission of the relatively high temperature gaseous emission from the first end and heating more towards the first end of the body portion, and the control device automatically switches flow between the forward cycle and reverse cycle, and vice versa, dependent on the temperature of the opposing second end and the first end of the body portion respectively and/or dependent on the temperature at a predetermined inner distance from the opposing second end and the first end of the body portion respectively.
  • the control device for effecting a change in directional flow of the fluid stream across the at least one article is not intended to be particularly limited.
  • the control device may be a valve, regulator or tap, which will generally be associated with and operated by a computer control.
  • the control device may be operated independently or used in conjunction with one or more temperature measuring devices (such as a thermocouple) that are positioned at suitable locations within the combustion module.
  • the temperature measuring devices may send a signal to the computer control when a particular section of the body portion within the combustion module reaches a predetermined temperature, thereby activating the control device.
  • the way in which the article achieves mitigation of the volatile component(s) is not intended to be particularly limited. Generally, however, during mitigation the article is heated in order to oxidize the component(s). The degree of heating will depend on the particular component(s) to be mitigated as well as whether or not the body portion contains a catalyst. It should be appreciated that depending on the application in question, the system may be provided with any number of combustion modules. These may be arranged in series or in parallel as desired. Likewise, if more than one combustion module is included, the combustion modules need not be identical. These may include body portions formed from different refractory materials having the same or different catalysts applied or included. Likewise, the bores extending through different body portions may be of different dimensions and the body portions may be of different dimension relative to one another. In summary, the features of the combustion modules may be taken individually or collectively from those described above.
  • the orientation of the combustion module(s) is not particularly limited.
  • the combustion module(s) may be horizontally or vertically mounted to facilitate either substantially horizontal or vertical introduction of the gaseous feed into and through the bores of the body portion(s).
  • the body portion of the combustion chamber may be heated by any suitable source, for example, an external source such as an electrical heating element. Heating may be applied continually if desired. If heating is applied, heating elements are preferably located in the centre of the body portion.
  • the body portion of the combustion module may also be heated to an initial desired temperature by an external heating source immediately prior to passing the gaseous stream through the body portion of the combustion module, for example by a duct burner. Heat generated during mitigation of the volatile component may be retained by the body portion thereby maintaining the desired temperature for the body portion and foregoing the need for continued operation of the external heating source.
  • the system preferably includes a carbon dioxide removal system for capturing and removing carbon dioxide from the gaseous emission prior to release to the atmosphere.
  • the carbon dioxide removal system may equally be positioned such that carbon dioxide is removed from the gaseous feed prior to introduction to the combustion module if desired.
  • the volume of carbon dioxide in the gaseous emission/feed is expected to be between about 0.2 to 2%.
  • Suitable devices or systems for removing such amounts of carbon dioxide would be readily appreciated by those of skill in the art, but may include, for example, carbon dioxide scrubbers and sinks, and/or other suitable absorbent or adsorbent components.
  • Geo-sequestration or other forms of carbon dioxide sequestration may also be employed if appropriate.
  • Additional undesirable components may also be removed from the gaseous emission if present using suitable methods and systems as known in the art.
  • waste heat from the system is preferably captured and utilised within the system or in an associated side process.
  • waste heat from the system may be utilised in a coal drying process, for heating of water, for steam generation for cooling or water desalination.
  • a method of mitigating methane from ventilation air derived from a coal mine including: passing the ventilation air through a combustion module including a body portion formed from a refractory material, at least part of the body portion being at or above the auto-ignition temperature of methane; wherein the body portion includes a plurality of bores extending from a first end thereof to an opposing second end thereof, the bores facilitating the flow of the ventilation air through the body portion and transfer of heat to the ventilation air, thereby mitigating the methane.
  • a section of the body portion is heated to a temperature suitable for mitigation of the methane.
  • this will be a section that is centrally disposed along the axis of the body portion.
  • the section of the body portion where mitigation of methane is to occur, in the absence of a catalyst will preferably be heated to a temperature of from about 900 0 C to about 1200 0 C.
  • the body portion of the combustion module may preferably include at least one catalyst coated on internal walls of the bores, or disposed in the refractory material.
  • the temperature of the section of the body portion where mitigation occurs may be less than if a catalyst is not employed.
  • the section of the body portion is heated to a temperature of from about 200 0 C to about 700 0 C, preferably from about 350 0 C to about 500 0 C.
  • Such low temperatures are advantageous from at least a costs perspective.
  • the heat generated during the combustion of methane is preferably retained by the body portion and the method preferably includes switching flow of the ventilation air between a forward cycle and a reverse cycle, and vice versa, dependent on the temperature of the second opposing end and the first end of the body portion respectively and/or dependent on the temperature at a predetermined inner distance from the opposing second end and the first end of the body portion respectively.
  • switching between the forward cycle and the reverse cycle is conducted automatically by means of a control device.
  • carbon dioxide is preferably removed from the ventilation air prior to combustion of the methane in the combustion module, or is removed from a gaseous emission exiting the combustion module. Carbon dioxide removal may be effected by any suitable means as noted above in respect of the previous aspect of the invention.
  • waste heat from the combustion of the methane may be captured and utilised.
  • waste heat may be utilised in a coal drying process, for heating of water, for steam generation for cooling, or for water desalination as mentioned above.
  • the inventor has also arrived at a combustion module suitable for use in the system of the first aspect of the invention and/or the method of the second aspect of the invention.
  • a combustion module for use in the above described system and/or method including a body portion formed from a refractory material and having a plurality of bores extending from a first end thereof to an opposing second end thereof, the bores facilitating the flow of a gaseous feed through the body portion and transfer of heat to the gaseous feed.
  • the bores be substantially parallel to one another and have a width of from about 5mm to 20mm, more preferably about 10mm, and be spaced apart a distance of from about 15mm to 35mm, and the body portion have a height of from about 1.5 metre to about 3 metres. It will, however, be appreciated that any of the dimensions and features previously described may also apply to this aspect of the invention.
  • the body portion of the combustion module may include at least one catalyst coated on internal walls of the bores, or disposed in the refractory material.
  • Figure 1 is a schematic diagram of a system for mitigating a volatile component from a gaseous stream according to the invention.
  • Figure 2 is a perspective view of a body portion for use in a combustion module according to the invention.
  • a system 10 for mitigating a volatile component from a gaseous feed 11 is provided.
  • the gaseous feed 11 has a methane concentration between 0.01% to 1.5%, such as seen in ventilation air from a coal mine.
  • the gaseous feed enters the system 10 via an inlet 12 that may be provided with a fan 13.
  • the gaseous feed 11 flows through a forward flow 14 that includes passing through a combustion module 15.
  • the combustion module which will be described in more detail below, effects combustion of the volatile component, in this case methane.
  • a duct burner 16 brings the body portion 20 (illustrated in Figure 2) of the combustion module 15 to a desired temperature, generally about 1200 0 C. Inclusion of a catalyst in the body portion, for example within the material of the body portion itself or applied to the walls of the bores extending therethrough, may dictate a relatively low start up temperature of from about 20O 0 C to about 700 0 C. This will be most advantageous in terms of minimising operational costs and so on.
  • the duct burner 16 may be turned off.
  • electrical heating elements located in the centre of the body portion 20 may be used to start up the system 10 instead of the duct burner 16.
  • a draft fan forces the gaseous feed 11 through the combustion module 15, including passing through bores of the body portion 20.
  • the gaseous feed is initially at a temperature of about 25 0 C (i.e. ambient temperature) and increases temperature as it passes through the combustion module 15.
  • the temperature of the gaseous feed 11 rises in the combustion module 15, as a function of the flow rate of the gaseous feed 11 and the axial length of the combustion module 15, by absorbing heat from inner walls of the bores of the body portion 20.
  • the gaseous feed 11 At a certain distance from an inlet 17 of the combustion module 15, the gaseous feed 11 reaches the auto-ignition temperature of the volatile component (in this case methane). At that point, oxidation takes place resulting in relatively high temperature gaseous emission that provides heat to the body portion 20 as it exits the combustion module 15 through outlet 18 and is emitted from the system 10 through an exhaust 19.
  • the volatile component in this case methane
  • the body portion 20 includes an array of bores 21 that extend through the body portion 20 from a first end 22 to an opposing second end 23.
  • the bores 21 have a circular cross section with a diameter of 10mm and are spaced apart a distance of 20mm, taken from the centre points of the bores 21.
  • the outermost bores 21 defining the edge of the array are located 25mm from the edge of the body portion 20, again taken from the centre points of the bores 21 defining the edge of the array.
  • the body portion 20 has a height of from 1 metre to 2 metres, a length of from about 2 metres to 4 metres and a width of about 2 metres. It will be appreciated that these dimensions may vary as described above.
  • bores 21 advantageously avoids, or at least alleviates issues relating to dust clogging the passage through the body portion 20 of the combustion module 15.
  • the bores 21 also advantageously ensure minimal pressure drop across the combustion module 15 which provides for relative good economy for the system 10.
  • the system 10 has a forward cycle 14 flow and a reverse cycle 14' flow. This is also illustrated in Figure 2.
  • the gaseous feed 11 enters bores 21 of the body portion 20 of the combustion module 15 from a first end 22.
  • the gaseous feed 11 passes through the body portion 20, its temperature increases due to heat exchange with the walls of the bores 21 until it reaches a section of the body portion 20 that is at or above the auto-ignition temperature of the volatile component in the gaseous feed 11. This will generally be in a mid- region of the body portion 20.
  • the control device switches flow to the reverse cycle 14' thereby maintaining the thermal environment necessary to continue with the mitigation, for example the auto-oxidation of methane.
  • the centre of the combustion module i.e. the body portion
  • the bed is initially heated to 1000 0 C by electrical heating coils.
  • this electrical heating method can be used for the body portion of the combustion module, in the form of a honeycomb-shape refractory cement cast block VAM mitigator, by heating the centre of the body portion. Electrical heating may only be needed at first start-up, and the mitigator will be self-sustaining when methane concentration in ventilation air is above 0.3%.
  • a propane fed burner is used for its start-up.
  • the body portion in the form of a refractory cement cast block, heat exchange, flow reversal and methane oxidation occur in the individual passages, allowing use of a duct burner for start-up.
  • the duct burner can be installed in the top of the cast block body portion, and hot combustion gases flow through the individual passages to heat the bed for start-up. Mine drainage gas with a methane concentration of not less than 30% can be used by the burner.
  • volume of the passages (each 15mm diameter, approximately 2050 passages, passage length of 1.2m) is 0.4345m 3 (this is estimated based on the preliminary calculation as a case here);
  • the volume of the refractory cement cast solid is 0.7655m 3 ;
  • the energy required for start-up is estimated to be 478,167MJ, equivalent to the heat value of 13,282 m 3 of methane.
  • This methane is
  • MEGTEC demonstration units At present, there are several MEGTEC and VAMOX demonstration units in the world, which are summarised in the following: ⁇ MEGTEC demonstration units:
  • one of the advantages for the system of the invention is its low pressure drop through the honeycomb monolithic structure bed.
  • the pressure drop is about 25Pa through the honeycomb block with a height of 1.2m and passage size of 15mm diameter.
  • the power consumed is about 0.35kW to overcome the pressure drop inside the bed.
  • the pressure drop could be 13,500Pa depending on the packed bed materials, which corresponds to a power consumption of 189kW.
  • the power consumption for operating the VAM mitigation unit is a sum of power for overcoming the pressure drop through the unit system and power for instrumentation.
  • VAM mitigation and utilisation plant may consist of the VAM capture units, lean-burn turbine units and VAM mitigation units. If a mine just employs
  • VAM mitigation units under the site condition the mitigation plant can have a number of mitigation units, which can be configured in parallel, similar to the configuration of 4 MEGTEC units at WestCliff.
  • each unit would have a capacity of processing 14-17m 3 /s ventilation air, which should lead to a good portability.
  • VAM mitigation and/or utilisation plant size should be reasonably large as it processes air flow rate of 200-400m 3 /s.
  • air flow rate 200-400m 3 /s.
  • flue gas flow rate is about 300m 3 /s (slightly various depending on type of power plant and coal properties). This could be used as an indication of any potential VAM plant size.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Incineration Of Waste (AREA)

Abstract

La présente invention concerne un système pour l'atténuation de l'effet d'au moins un constituant à partir d'un charge gazeuse, le système comportant : un orifice d'admission en communication fluidique avec ladite charge gazeuse ; un module de combustion pour atténuer le constituant volatil depuis la charge gazeuse ; un dispositif de commande pour commander l'écoulement de la charge gazeuse à travers le module de combustion entre un cycle d'écoulement vers l'avant et un cycle d'écoulement vers l'arrière ; et un orifice de sortie à travers lequel une émission gazeuse à partir de laquelle ledit constituant volatil dont l'effet a été atténué peut être émis depuis le système. Ledit module de combustion comporte une partie de corps réalisée en un matériau réfractaire et comprenant une pluralité d'alésages s'étendant depuis une première extrémité de celle-ci jusqu'à sa seconde extrémité opposée, lesdits alésages facilitant l'écoulement de la charge gazeuse à travers la partie de corps et le transfert de la chaleur vers ladite charge gazeuse, atténuant ainsi l'effet dudit constituant volatil en utilisation.
PCT/AU2009/001708 2009-01-29 2009-12-24 Système et procédé pour l'atténuation de l'effet d'au moins un constituant à partir d'un flux de fluide WO2010085835A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2009338680A AU2009338680B2 (en) 2009-01-29 2009-12-24 System and method for mitigating at least one component from a fluid stream

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2009900335 2009-01-29
AU2009900335A AU2009900335A0 (en) 2009-01-29 System and method for mitigating at least one component from a fluid stream

Publications (1)

Publication Number Publication Date
WO2010085835A1 true WO2010085835A1 (fr) 2010-08-05

Family

ID=42395040

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2009/001708 WO2010085835A1 (fr) 2009-01-29 2009-12-24 Système et procédé pour l'atténuation de l'effet d'au moins un constituant à partir d'un flux de fluide

Country Status (2)

Country Link
AU (1) AU2009338680B2 (fr)
WO (1) WO2010085835A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102230393A (zh) * 2011-04-11 2011-11-02 山东理工大学 煤矿乏风预热催化氧化器的进排气导流装置
EP2760790A4 (fr) * 2011-09-30 2015-06-24 Newcastle Innovation Ltd Élimination par cyclage chimique de méthane d'un air de ventilation
CN105781608A (zh) * 2016-04-13 2016-07-20 山东理工大学 双反应室预热催化氧化装置电控调节式进排气导流系统
CN105822339A (zh) * 2016-04-13 2016-08-03 山东理工大学 乏风热逆流氧化装置机械调节式进气均流系统
WO2017070737A1 (fr) * 2015-10-30 2017-05-04 Commonwealth Scientific And Industrial Research Organisation Système de tuyauterie

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110500137A (zh) * 2019-09-20 2019-11-26 鞍钢集团矿业有限公司 一种无底柱分段崩落法回采进度自动监测方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB721534A (en) * 1951-05-07 1955-01-05 Power Jets Res & Dev Ltd Apparatus for generating combustion products for use in a gas turbine plant or otherprime mover
GB876261A (en) * 1958-04-08 1961-08-30 Belge Produits Chimiques Sa Improvements in or relating to gas distributors
US5921763A (en) * 1996-05-02 1999-07-13 Thermatrix, Inc. Methods for destroying colliery methane and system for practicing same
AU2007332089A1 (en) * 2006-12-15 2008-06-19 Eestech, Inc. A combustion apparatus
CN101413398A (zh) * 2008-11-28 2009-04-22 山东理工大学 矿井乏风瓦斯氧化装置的加热启动系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB721534A (en) * 1951-05-07 1955-01-05 Power Jets Res & Dev Ltd Apparatus for generating combustion products for use in a gas turbine plant or otherprime mover
GB876261A (en) * 1958-04-08 1961-08-30 Belge Produits Chimiques Sa Improvements in or relating to gas distributors
US5921763A (en) * 1996-05-02 1999-07-13 Thermatrix, Inc. Methods for destroying colliery methane and system for practicing same
AU2007332089A1 (en) * 2006-12-15 2008-06-19 Eestech, Inc. A combustion apparatus
CN101413398A (zh) * 2008-11-28 2009-04-22 山东理工大学 矿井乏风瓦斯氧化装置的加热启动系统

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102230393A (zh) * 2011-04-11 2011-11-02 山东理工大学 煤矿乏风预热催化氧化器的进排气导流装置
EP2760790A4 (fr) * 2011-09-30 2015-06-24 Newcastle Innovation Ltd Élimination par cyclage chimique de méthane d'un air de ventilation
US9314740B2 (en) 2011-09-30 2016-04-19 Newcastle Innovation Limited Chemical looping removal of ventilation air methane
EP3345864A1 (fr) * 2011-09-30 2018-07-11 Newcastle Innovation Limited Élimination par cyclage chimique de méthane d'un air de ventilation
WO2017070737A1 (fr) * 2015-10-30 2017-05-04 Commonwealth Scientific And Industrial Research Organisation Système de tuyauterie
CN105781608A (zh) * 2016-04-13 2016-07-20 山东理工大学 双反应室预热催化氧化装置电控调节式进排气导流系统
CN105822339A (zh) * 2016-04-13 2016-08-03 山东理工大学 乏风热逆流氧化装置机械调节式进气均流系统

Also Published As

Publication number Publication date
AU2009338680B2 (en) 2015-12-17
AU2009338680A1 (en) 2011-08-18

Similar Documents

Publication Publication Date Title
CN108273358B (zh) 有机废气处理系统及其处理方法
AU2009338680B2 (en) System and method for mitigating at least one component from a fluid stream
CN103394270B (zh) 可移动一体式有机废气处理装置
US20140170046A1 (en) Pollution control system for kiln exhaust
US9651249B2 (en) Method for utilization of low-concentration gas mixtures of combustible gas and air with stable heat energy recovery
CN205269406U (zh) 一种简易VOCs催化氧化处理器
Marín et al. Reverse flow reactors as sustainable devices for performing exothermic reactions: Applications and engineering aspects
CN103331086A (zh) 可移动一体式有机废气处理装置
ATE550089T1 (de) Abgasreinigungssystem
CN107899415B (zh) 一种焦炉烟气宽负荷脱硝装置
CN206184212U (zh) 一种蜂窝活性炭固定式吸附床
CN210544196U (zh) 一种吸附脱附催化氧化一体化装置
WO2009134419A1 (fr) Système de commande des émissions interne à une chaudière
CN102716643B (zh) 一种高温脱除垃圾焚烧烟气中酸性气体的装置及其方法
CN103845969A (zh) 烟气微细粒子及气态污染物协同去除的烟气净化装置
KR101558899B1 (ko) 바이오 가스 중 오염물을 제거하기 위한 인플라이트 전처리 장치
Yin et al. Site trials and demonstration of a novel pilot ventilation air methane mitigator
JP2010188333A (ja) ジーゼル排気の流動層浄化方法
CN110694448A (zh) 废气净化监控管理系统
CN101732989A (zh) 组合烟道选择性催化还原法脱硝反应器
CN203710824U (zh) 烟气微细粒子及气态污染物协同去除的烟气净化装置
CN106178946A (zh) 整体嵌入式冶炼烟气脱硝系统的实现方法
CN103363533B (zh) 一种用于催化净化工业有机废气和产生高温气体的装置
CN202778275U (zh) 一种二噁英去除设备
KR102297744B1 (ko) 시멘트 소성로 또는 제철소 소결로 공정에서 탈질 및 디더스팅(De-Dusting) 기능을 동시 처리하는 촉매 일체형 집진기

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09839049

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2009338680

Country of ref document: AU

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2009338680

Country of ref document: AU

Date of ref document: 20091224

Kind code of ref document: A

122 Ep: pct application non-entry in european phase

Ref document number: 09839049

Country of ref document: EP

Kind code of ref document: A1