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
  • B01D53/02—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
  • B01D53/04—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 with stationary adsorbents
  • B01D53/0407—Constructional details of adsorbing systems
  • B01D53/0446—Means for feeding or distributing gases
• • 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
  • B01D53/06—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 with moving adsorbents, e.g. rotating beds
• • 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
  • B01D2253/102—Carbon
• • 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
  • B01D2253/108—Zeolites
• • 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
  • B01D2257/704—Solvents not covered by groups B01D2257/702 - B01D2257/7027
• • 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
  • B01D2257/708—Volatile organic compounds V.O.C.'s
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2258/00—Sources of waste gases
  • B01D2258/02—Other waste gases
  • B01D2258/0258—Other waste gases from painting equipments or paint drying installations
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2258/00—Sources of waste gases
  • B01D2258/06—Polluted air
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
  • B01D—SEPARATION
  • B01D2259/00—Type of treatment
  • B01D2259/40—Further details for adsorption processes and devices
  • B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
  • B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
  • B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas

Definitions

• Process and regenerative separation device for separating impurities from process exhaust air The present invention relates to a process and a process
• Regenerative separation device in particular filter device for separating impurities from process exhaust air, for example for separating organic solvents from solvent-containing process exhaust air, for example for use in an industrial surface treatment plant.
• the volatile organic solvents are physically attached to a separation unit, in particular a filter of a separation device, in particular a filter device (adsorption, absorption). This process can be reversed by a temperature increase of the filter (desorption).
• Hot air from 140 to 450 ° C with a low volume flow is used for the desorption process, for example.
• the hot air emerging from the separation device, in particular the filter device after passing through the separation unit, in particular the filter is also referred to as concentrate air.
• the solvent concentration in the concentrate air increases in comparison to the process air in the same proportion as the volume flow is reduced.
• concentration increases in the concentrate air in the ratio of 2: 1 to 20: 1 compared to the process exhaust air can be achieved. The limits of this concentration result from the achievement of a lower one
• the concentrate air can finally a cleaning device be fed to extract the solvents or recover.
• Filter device with a designed as a rotor separation unit, in particular filters used, the end faces are continuously supplied with process exhaust air and hot air.
• the separation device in particular filter device in a sector-shaped deposition zone and a sector-shaped
• the temperatures of the filter range in a first phase of the regeneration process is not sufficient to desorb the deposited solvents in the first filter section. This can lead to the solvent concentration in the concentrate air and the efficiency of the downstream cleaning device being insufficient or reduced.
• the invention is therefore based on the object to provide a method and a regenerative separation device, in particular filter device for separating impurities from process exhaust air, which allow a higher efficiency.
• the method according to the invention for separating contaminants from process exhaust air contains the steps of passing the process exhaust air through a separation device, in particular through a filter device; the regeneration of the separator, in particular filter device by passing a
• Regeneration stream separating the regeneration stream flowing through the precipitator, in particular the filter means during regeneration, into a first substream having an impurity concentration less than a first predetermined threshold and a second substream having an impurity concentration equal to or greater than a second predetermined threshold; second predetermined
• Limit value is equal to or greater than the first predetermined limit value; returning the regenerated first partial flow to the separation device, in particular filter device; and directing the generated during regeneration second partial flow to a cleaning device.
• a part of the regeneration stream which has a comparatively low concentration of impurities, is separated off as a first partial stream ("split stream") and recycled to the precipitation device, in particular filter device.
• concentration of the impurities in the second partial stream (“concentrate stream”) of the regeneration stream achieved in this way can increase the efficiency of the purification device to which the second partial stream is fed.
• the concentration of the contaminants in the separation device, in particular the filter device and thus also the concentration in the second partial flow of the regeneration flow can be increased so that the efficiency of the purification device can be improved overall .
• high concentrations or concentration factors can be achieved, which are usually only achievable with two-stage filter devices (eg up to 40: 1 and more).
• the inventive method is particularly suitable for cleaning process exhaust air with low concentration or loading of impurities.
• the method is also advantageously suitable for process exhaust air streams with higher concentrations of impurities, in particular combustible subcomponents, the concentration of which in the second partial stream resulting concentrations above the lower explosion limit (LEL) of, for example, 25%.
• LEL lower explosion limit
• This second partial stream can then preferably directly without additional facilities in a simple cleaning device such.
• the separation of the first partial flow increases the impurity concentration in the second partial flow, so that the efficiency z. B. the torch can be improved.
• the first partial flow with the lower impurity concentration arises, for example, during a first or
• Temperature level is and therefore solve only a few contaminants from the separation unit, in particular the filter.
• the first partial flow not only has a relatively low impurity concentration but also a lower temperature.
• the second partial flow arises during a second phase of the regeneration of the separation device, in particular the filter device, when the separation device, in particular the filter device, has reached a higher temperature level.
• the second partial flow not only has a higher impurity concentration but also a higher temperature.
• the second Partial flow with the higher impurity concentration can also be generated already in an early phase of regeneration, if, for example, a very rapid heating of the separator, in particular filter device takes place, and in this case the first partial stream with the lower impurity concentration can be generated in a late phase of regeneration if, for example, a (longer) cooling phase for the separator, in particular filter device is needed.
• both variants may be due to the higher temperature of the cleaning device supplied second partial flow their
• the purifier may be operated autothermally (i.e., without additional power) or even with excess energy, thereby optimizing the energy requirements of the entire plant.
• variable volumetric flow of the regeneration flow at a given, possibly even temporally fluctuating VerInur Trentskonzentration the process exhaust air over a given, possibly variable time interval during the Aufkonzentrationsphase and split into two phases split regeneration phase can be achieved.
• the regeneration phase is characterized by a reduced volumetric flow, while the partial phases differ, in particular with regard to their respective impurity concentration.
• process exhaust air is to be understood in this context in particular an exhaust gas and / or an exhaust air of at least one upstream process or an upstream source that includes a load or concentration of impurities.
• impurities are it is, for example, at least one combustible component, such as a volatile organic constituent (VOC) of the exhaust gas or the exhaust air.
• VOC volatile organic constituent
• the process exhaust air may in particular be a solvent-containing process exhaust air which has a loading / concentration of an organic solvent (for example, the paint industry).
• VAM ventilation air methane
• the separating device in particular the filter device, preferably has a separating unit, in particular a filter, on which the impurities contained in the process exhaust air (eg organic solvents) can physically accumulate when flowing through.
• the separation unit is preferably configured as an adsorption filter, an absorption filter or the like.
• the separation unit, in particular the filter preferably contains activated carbon, zeolite or another suitable filter material for this purpose.
• the regeneration stream is preferably hot air, preferably in a temperature range of about 140 to 450 ° C.
• the regeneration flow flows through the separation device, in particular the filter device or its separation unit, in particular filters in a direction opposite to the direction in which the process exhaust air is passed through the separation device, in particular the filter device.
• concentration is intended to denote any type of content related to the volume of a mixture (DIN 1310).
• concentration therefore includes in this context in particular a molar concentration, an equivalent concentration (normality), a Mass concentration, a volume concentration and a particle concentration (particle density).
• the first substream of the regeneration stream has an impurity concentration less than a first predetermined one
• the first predetermined limit value is preferably selected so that the impurity concentration of the first partial flow is at most that of the process exhaust air.
• the second substream of the regeneration stream has an impurity concentration equal to or greater than a second predetermined threshold, i. a medium or higher impurity concentration.
• the second predetermined limit value is preferably selected such that the impurity concentration of the second partial flow exceeds that of the process exhaust air.
• filter device is an input concentration or loading of the incoming process exhaust air impurities, in particular at least one combustible component part such as a volatile organic component (VOC) in passing through the separator, in particular filter device such lowered, that a starting concentration in the outgoing process exhaust at least the legal or normative
• the first predetermined limit value of an impurity concentration in the first substream of the regeneration stream is lower than the input concentration in the incoming process exhaust air. Furthermore, preferably the second predetermined limit value of impurity concentration in the second partial flow of the regeneration flow higher than that
• the cleaning device is in this context
• the cleaning device which is suitable for extracting or recovering the impurities from the second partial stream of the regeneration stream.
• the cleaning device is preferably
• RTO regenerative thermal oxidation
• TO direct thermal oxidation
• CO recuperative catalytic oxidation
• RCO regenerative catalytic oxidation
• Regeneration stream can with the second partial flow and the
• the Cleaning device optionally form a closed or an open regeneration circuit.
• the gas turbine unit is preferably a
• Microturbine unit as disclosed, for example, in DE 10 2013 203 448 AI. With regard to the structure and operation is fully incorporated by reference to this earlier patent application.
• Flow rate of the generated during regeneration first partial flow variably controlled.
• Flow rate of the second partial flow generated during regeneration variably regulated.
• the concentration and the temperature of the second partial stream of the regeneration stream can be optimized and thus the efficiency of the cleaning device can be increased.
• the flow rate or the flow rate ratio of the first partial flow of the regeneration stream are controlled so that the cleaning device autothermally, ie can be operated without additional power supply.
• the regulation of the first partial flow preferably takes place as a function of a temperature of the first partial flow, an impurity concentration of the first partial flow, a temperature of the second partial flow, an impurity concentration of the second partial flow, a temperature of the process exhaust air, an impurity concentration of the process exhaust air, a flow volume of the
• the first partial flow of the process exhaust air generated during regeneration is fed upstream of the separation device, in particular filter device.
• the impurity concentration of the process exhaust air and thus also the second partial flow can be increased, so that the efficiency of the cleaning device can be further improved.
• the separating device in particular filter device between the regeneration and a next cleaning of the process exhaust air is cooled by means of a cooling air flow.
• a cooling air flow After a regeneration process, it is advantageous to cool the separation device, in particular the filter device, from the elevated temperatures for regeneration to a temperature range suitable for accumulating the contaminants.
• the first partial flow generated during regeneration preferably also the cooling air flow upstream of the
• a further partial flow is branched off from the second partial flow generated during regeneration and returned to the separation device, in particular filter device.
• This diverted further partial flow is preferably fed to the first partial flow, the process exhaust air and / or the regeneration flow.
• the impurity concentration in the separation device, in particular the filter device and thus also of the second partial flow can be further increased, so that the efficiency of the purification device can be further increased.
• the separation device in particular filter device is operated continuously.
• the separating device in particular filter device for this purpose, a rotating (for example disc-shaped) deposition unit, in particular filters, which successively successive areas of the separator, in particular filter device for filtering,
• the regenerative separation device in particular a filter device for separating contaminants from process exhaust air, has according to the invention: a connection for introducing process exhaust air; a separating unit, in particular a filter for picking up the contaminants from the separator into the separating device, in particular filter device introduced process exhaust air; a port for discharging clean air; one
• connection for introducing a regeneration stream; separation means for separating the regeneration flow passed through the separation unit, in particular the filter, into a first substream having an impurity concentration less than a first predetermined threshold and a second substream having an impurity concentration equal to or greater than a second predetermined threshold; the second predetermined threshold is equal to or greater than the first predetermined threshold; a port for discharging the first partial flow; and a port for discharging the second partial flow.
• Filter device achievable advantages and the definition of terms is referred to the above explanations in connection with the method according to the invention, which apply to the deposition device, in particular filter device accordingly.
• the separation device is designed such that it can regulate a flow rate of the first partial flow variable.
• the separation device is designed such that it can variably regulate a ratio of the flow rate of the first partial flow generated during regeneration to the flow rate of the second partial flow generated during regeneration.
• the separating device preferably has an adjustable dividing wall, an adjustable flow regulator or the like.
• Separating unit in particular the filter configured as a rotor whose end faces can be continuously charged with the process exhaust air and the regeneration stream.
• the separation unit in particular the filter is preferably disk-shaped educated.
• the axial position of the rotor is basically freely selectable, preferably substantially horizontal or substantially vertical.
• the separation device in particular filter device preferably has a sector-shaped
• the separation zone is preferably connected to the connection for introducing process exhaust air and the connection for discharging clean air.
• the regeneration zone is preferably connected to the port for introducing a
• Partial flow and the connection for discharging the second partial flow in conjunction preferably ranges from about 5% to about 25%, more preferably from about 10% to about 15%.
• the separation device divides the regeneration zone in a direction of rotation of the separation unit, in particular of the filter into a first partial zone and a second partial zone.
• the first sub-zone of the regeneration zone is preferably in communication with the port for introducing a regeneration stream and the port for discharging the first sub-stream
• the second sub-zone is preferably in communication with the port for introducing a regeneration stream and the port for discharging the second sub-stream.
• Sub-zone to the second sub-zone is preferably adjustable by the separator.
• the area of the first subzone is preferably at most about 40%, more preferably at most about 30%, or at most about 20% of the area of the regeneration zone.
• the separating device in particular filter device further a connection for introducing a cooling air flow and a
• the separation device in particular filter device preferably has a sector-shaped
• Cooling zone which is arranged in a rotational direction of the separation unit, in particular the filter between the regeneration zone and the deposition zone.
• This cooling zone is preferably connected to the connection for introducing a cooling air flow and the connection for discharging the cooling air flow after flowing through the separation unit, in particular the filter.
• the present invention further relates to a system for separating contaminants from process exhaust air, for example, for separating organic solvents from solvent-containing process exhaust air, which comprises a regenerative
• Separating device in particular filter device according to the invention and a cleaning device for extracting or recovering the impurities from the generated in a regeneration process of the separator, in particular filter device second partial stream.
• This system is particularly suitable for carrying out the method according to the invention described above.
• system further comprises a flow line for returning the at a
• the flow line is preferably configured and arranged to introduce the first partial flow into the process exhaust air, into the cooling air flow and / or into the separation / filtration zone of the precipitation device, in particular filter device.
• the system also has a flow regulator for branching a
• the flow regulator preferably has a multi-way valve, a flow switch or the like.
• the further flow line is preferably designed and arranged to initiate the diverted further partial flow into the regeneration flow, into the first partial flow and / or into the process exhaust air.
• industrial surface treatment equipment for treating a surface of a workpiece used.
• they can be used in paint shops for painting vehicle parts, in particular vehicle bodies, in which the organic solvents are to be separated from the paint exhaust air.
• the present invention is in all cases of cleaning polluted with pollutants pollutants exhaust gases /
• FIG. 2 is a simplified representation of a designed as a rotor filter of a separating device according to the invention, in particular filter device according to a preferred embodiment,
• FIG. 3 shows a simplified illustration of a separating device of a separating device according to the invention, in particular
• FIG. 4 shows the structure of a cleaning device with a gas turbine engine
• FIG. 5 shows a simplified representation of a separating device of a separating device according to the invention, in particular
• FIG. 1 various variants of the structure of a system according to the invention for separating impurities from process exhaust air are explained in more detail.
• FIGS. 2 and 3 the construction and operation of the separation device, in particular the filter device of such a system, will be closer.
• the process exhaust air (eg solvent-containing paint exhaust air) 10 is supplied to a separation device 12 via a connection 13a.
• the process exhaust air purified in the separation device is discharged via a connection 13b and, for example, discharged into the environment by means of a blower 16 as so-called clean air 14 or returned to the process again.
• the separation device 12 has a separation unit 18, in particular a filter, to which the impurities contained in the process exhaust air 10 when flowing through the
• the separation unit 18 of the separator 12 is formed, for example, as an adsorption filter, an absorption filter or the like, and has, for example, activated carbon as a filter material.
• Separating unit 18 can by means of elevated temperatures for
• the deposition unit 18 in this embodiment is designed as a disk-shaped rotor.
• the separation device 12 has a separation zone 20 and a regeneration zone 22, which are configured in each case sector-shaped, wherein the surface of the regeneration zone 22 is dimensioned much smaller than the surface of the deposition zone 20.
• the disc-shaped rotor preferably has a substantially horizontal or substantially vertical axis position ,
• the separation device 12 is operated continuously. Ie. the separation unit 18 successively passes through the separation zone 20 and the regeneration zone 22 in a rotational direction 26.
• the regeneration zone 22 is divided in the direction of rotation 26 of the separation unit 18 into a first partial zone 22a and a second partial zone 22b.
• the area of the first sub-zone 22a is dimensioned significantly smaller than the area of the second sub-zone 22b.
• a separation between the first and the second sub-zone 22a, 22b by means of a separating device 28 in the form of a partition wall.
• This separating device 28 is pivotably mounted on a bearing 30 over a predetermined pivoting range 32.
• the Pivoting the separator 28 may have an area ratio between the first and second sub-zones 22a, 22b of FIG.
• Regeneration zone 22 can be set variably.
• FIG. 3 thus shows a separation unit 18 with a relatively simple mechanical separation device 28, which is mounted pivotably on a bearing 30 in the end region.
• the storage 30 is z. B. coupled to a drive, which can be controlled, for example, via a starting surface with respect to the average output temperature of the first and / or the second partial flow 42, 44.
• FIG. 5 shows a further embodiment of a separating device 28 for the separating unit 18 of the separating device 12.
• the separating device 28 in the form of a partition wall at its two end regions (top and bottom in Fig. 5) movably mounted or displaceable.
• the two bearings 31, 31b are each with a
• the separating device 28 coupled and preferably independently controlled.
• several (preferably at least two, more preferably at least four) temperature sensors 34a, 34b are preferably provided along the separating device 28 in order to detect the outlet temperatures of the first and / or the second partial flow 42, 44 as control parameters for the separating device 28.
• the impurity concentration in the second substream 44, and thus the efficiency of the purifier 46, can be further increased.
• the separating device 28 can also be designed, for example, as a fan-like, variably spreadable separating curtain or as variable in FIG Circumferential direction can be formed over a defined angular range spreadable lamellar device.
• control parameter preferably the temperature, the impurity concentration, the volume flow and / or the pressure of the first and / or the second partial flow 42, 44 can be used.
• a cooling zone 24 is also provided in the direction of rotation 26 of the separation unit 18 between the regeneration zone 22 and the separation zone 20.
• the area of this cooling zone 24 is dimensioned significantly smaller than the area of the deposition zone 20, and preferably also smaller than the area of the regeneration zone 22.
• the cooling zone 24 of the separation device 12 is preferably connected to a connection 13c, via which the separation device 12 can be supplied with a cooling air flow 50 by means of a blower 52. After flowing through the separation unit 18, the cooling air flow 54 via a connection 13d from the
• cooling air flow 50 can also be separated off as a partial flow from the process exhaust air 10 or be diverted therefrom. This is possible in particular when the fan 52 on the suction side
• the cooling air can be heated to a desorption temperature and preferably to
• the cooling air flow 50 preferably flows through the separation device 12 in a direction opposite to the direction in which the process exhaust air 10 flows through the separation device 12.
• the cooling air flow 50 cools the separation unit 18 of the separation device 12 after a regeneration process in the regeneration zone 22 again to a temperature range of about 10 to 60 ° C, in which the impurities contained in the process exhaust air 10 can attach to the filter 18.
• the regeneration zone 22 of the separator 12 is on the input side with a connection 13e for introducing a
• the regeneration stream 36 is preferably hot air, which is brought by means of a heat exchanger 40 to a temperature in the range of 140 to 450 ° C and blown by means of a blower 38 into the separator 12.
• the regeneration zone 22 is connected to two terminals 13 f and 13 g in combination. More specifically, the first sub-zone 22a of the regeneration zone 22 communicates with the port 13f for discharging a first sub-stream 42, and the second sub-zone 22b of the regeneration zone 22 communicates with the port 13g for discharging a second sub-stream 44.
• the regeneration flow 36 preferably flows through the separation device 12 in a direction opposite to the direction in which the process exhaust air 10 flows through the separation device 12.
• the separation unit 18 is heated in the regeneration zone 22 to the pollution again from the
• Separating unit 18 to be able to solve (desorption). Since the separation unit 18 is still at a low temperature level in a first phase of this regeneration process (first sub-zone 22a), only a small number of impurities from the Filter solved so that the first partial flow 42 has only a relatively low impurity concentration.
• the first partial stream 42 of the process exhaust air 10 is supplied upstream of the separator 12 and thus ultimately returned to the separator 12. In this way, the impurity concentration in the process exhaust air 10 is increased, so that the impurity concentration in the separation unit 18 of the separator 12 can be increased.
• a flow regulator 60 is optionally provided in the first partial flow line. From this flow regulator 60, a flow line 62 leads to the cooling air flow 50 upstream of the separation device 12.
• the flow regulator 60 is preferably variably controllable.
• Regeneration zone 22 a certain period of time with the hot
• Regeneration stream 36 has been applied, reaches the
• the second partial stream 44 of the regeneration stream 36 therefore has a high impurity concentration, which is why it is also referred to as "concentrate stream”.
• the second substream 44 is fed to a cleaning device 46, in which the contaminants (eg organic solvent) 48 are extracted from the second substream 44
• the cleaning device 46 is, for example, a device for regenerative thermal oxidation (RTO).
• RTO regenerative thermal oxidation
• the cleaning device 46 may also be one with a gas turbine engine.
• a gas turbine engine Such is illustrated by way of example in FIG. 4 and, for example, in DE 10 2013 203 448 A1, to which reference is made for the entirety in terms of structure and mode of operation.
• the gas turbine plant is basically a power generation system, which in combination with the inventive method for separating impurities from process exhaust air as
• Cleaning device 46 can be used, in which the second partial flow 44 and its combustible components are burned.
• this cleaning device 46 has a gas turbine unit 64, in particular an icrogen turbine unit.
• the gas turbine engine 64 includes a gas turbine
• the gas turbine 66 may be designed in particular as a so-called ikrogasturbine and have the structure described in WO 2012/089837 AI.
• the compressor 68 With the compressor 68, the combustible components containing second partial stream 44 is sucked and compressed. The sucked second partial flow 44 is then passed through a heat exchanger designed as a recuperator 72, in which heat is transferred from the exhaust flow of the gas turbine 66 indicated by the arrow 74 to the compressed second partial flow.
• the combustible component-containing second substream 44 is burned together with strong gas.
• Flammable gas or gas mixture whose calorific value HA is above 15 MJ / m 3 is referred to as so-called strong gas.
• strong gas At the in the incinerator 76 burned strong gas can be z.
• natural gas especially bio natural gas act.
• the gas turbine unit 64 can optionally also be designed without the recuperator 72.
• the preheating of combustible constituents containing gaseous medium in this chemical pre-reactions causes before it enters the combustion chamber of a burner.
• FIG. 1 While a closed regeneration circuit is illustrated in FIG. 1, in other embodiments it may also be designed to be open.
• a flow regulator 56 is disposed in the second partial flow line downstream of the separator 12. With the aid of this flow regulator 56, one or more further partial flows can be diverted from the second partial flow 44.
• a further partial flow can be supplied to the regeneration flow 36 upstream of the separation device 12 via a first flow line 58a, a further partial flow can be supplied via a second flow line 58b to the first partial flow 42 before it is introduced into the process exhaust air 10, and a further partial flow can be supplied via a third flow Flow line 58 c of the process exhaust air 10 upstream of the separator 12 are fed.
• the impurity concentrations in the separator 12 and thus ultimately in the second partial stream 44 of the regeneration stream can be increased.
• the cleaning device 46 can work more efficiently.
• the cleaning device 46 in this way autothermic, ie work without additional energy.
• concentration factors for the second partial flow 44 of up to 40: 1 and more in relation to the process exhaust air 10 can be achieved. Such high concentrations were previously only with multi-stage
• the dew point can also be shifted.
• the cleaning device 46 can also operate more efficiently.
• one or more of the following parameters may be monitored: a temperature of the first substream 42, an impurity concentration of the first substream 42, a temperature of the second substream 44, an impurity concentration of the second substream 44, a temperature of Process exhaust 10, an impurity concentration of the process exhaust air 10, a flow volume of the process exhaust air 10, a temperature of the regeneration stream 36, a flow volume of the regeneration stream 36, an energy balance of the cleaning device 46, a pressure of the first partial flow 42, a pressure of second partial flow 44, a volume flow of the first partial flow 42, a volume flow of the second partial flow 44 and the like.
• the separating device 28 can then be variably controlled in dependence on these parameters in order to set an area ratio between the first partial zone 22a and the second partial zone 22b. In this way, a flow rate of the first partial flow 42 can be variably controlled or a flow rate ratio of the first partial flow 42 to the second partial flow 44 can be controlled variably.

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• General Chemical & Material Sciences (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Separation Of Gases By Adsorption (AREA)
• Treating Waste Gases (AREA)
• Separation By Low-Temperature Treatments (AREA)

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• 2014
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• 2015
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• 2018
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