EP3041605A1 - Verfahren zur herstellung eines katalysators, katalysator sowie verfahren für die oxidative dehydrierung von kohlenwasserstoffen - Google Patents
Verfahren zur herstellung eines katalysators, katalysator sowie verfahren für die oxidative dehydrierung von kohlenwasserstoffenInfo
- Publication number
- EP3041605A1 EP3041605A1 EP14748127.9A EP14748127A EP3041605A1 EP 3041605 A1 EP3041605 A1 EP 3041605A1 EP 14748127 A EP14748127 A EP 14748127A EP 3041605 A1 EP3041605 A1 EP 3041605A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- catalyst
- bar
- range
- oxygen
- aftertreatment
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/24—Chromium, molybdenum or tungsten
- B01J23/28—Molybdenum
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
- B01J27/057—Selenium or tellurium; Compounds thereof
- B01J27/0576—Tellurium; Compounds thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/08—Heat treatment
- B01J37/10—Heat treatment in the presence of water, e.g. steam
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/12—Oxidising
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/12—Oxidising
- B01J37/14—Oxidising with gases containing free oxygen
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
- C07C5/42—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with a hydrogen acceptor
- C07C5/48—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with a hydrogen acceptor with oxygen as an acceptor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- C07C2523/20—Vanadium, niobium or tantalum
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- C07C2523/20—Vanadium, niobium or tantalum
- C07C2523/22—Vanadium
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/16—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- C07C2523/24—Chromium, molybdenum or tungsten
- C07C2523/28—Molybdenum
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2527/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- C07C2527/02—Sulfur, selenium or tellurium; Compounds thereof
- C07C2527/057—Selenium or tellurium; Compounds thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Definitions
- the invention relates to a method for producing a catalyst according to
- Claim 1 a catalyst prepared thereby according to claim 11 and a method for oxidative Dehdr ist according to claim 12.
- a catalyst in the form of a metal oxide catalyst comprising at least one of Mo, Te, Nb, V, Cr, Dy, Ga, Sb , Ni, Co, Pt and Ce.
- Such metal oxide catalysts and in particular metal oxide catalysts of the general composition MoVTeNbO x are known from the prior art and are also used for oxidative processes.
- K. Amakawa et al. in ACS Catalysis, 2013, 3, 1103-1113 the selective oxidation of propane and benzyl alcohol. Products are acrylic acid or benzaldehyde.
- the Mi- phase of the catalyst is attributed a crucial role for the catalytic effect.
- the M1 phase is a bronze-like crystalline structure consisting of a network of octahedrally located molybdenum and vanadium centers linked by common oxygen atoms in the corner positions.
- Niobium is located within the five-membered channels, while tellurium partially occupies the channels formed by six and seven octahedrons, respectively.
- a detailed description of the crystalline structure can be found in DeSanto, P., Jr., et al., Structural aspects of the M1 and M2 phases in MoVNbTeO propane ammoxidation catalysts. Magazine for
- Oxygen scavenging concentrations are operated.
- a partial self-reduction is observed here so that part of the metal is no longer present as an oxide, which impairs the stability of the crystal structure, which can lead to collapse of this structure.
- this can be achieved only by appropriate dilution or by the introduction of an additional oxygen removal apparatus downstream of the reactor means, e.g. in US20100256432 described be accomplished.
- US2005085678 and WO2010096909 relates to a catalyst for the ODH.
- US2001025129 describes a NiO catalyst for the ODH.
- US4899003 describes a process for the ODH with a multi-stage reactor. Furthermore, such a method with at least two beds is known from US4739124.
- WO2005060442A2 relates to the production of olefins by ODH with an additional CO feed.
- WO2010115108A1 relates to a process for ethylene production by means of ODH and
- WO20101 15099A1 relates to a process for the treatment of a catalyst for the production of olefins from a
- DE 11 2009 000 404 T5 describes a " ⁇ -treatment" for increasing the proportion of the M1 phase, in which a MoVTeNbOx catalyst is treated with steam. Without exception, very high pressures of at least 10 MPa and temperatures greater than 400 ° C are required.
- After-treated catalyst is brought into contact with water vapor at a pressure below 100 bar, preferably below 80 bar, preferably below 50 bar and / or brought into contact with oxygen.
- a pressure below 100 bar, preferably below 80 bar, preferably below 50 bar and / or brought into contact with oxygen.
- an optimization of the catalyst for oxidative reactions in particular for the oxidative dehydrogenation of alkanes, can be achieved.
- this is done by the above-mentioned exposure to steam (also referred to as steaming) and / or the above exposure to oxygen. It has been shown that this surprisingly increases the proportion of the effective M1 phase in particular comparatively low pressures and thus the catalyst can be made more robust and stable. This concerns e.g. operation at low oxygen concentrations.
- the contacting of the catalyst in the aftertreatment with water vapor and / or oxygen is preferably carried out by the catalyst is subjected to a stream comprising water vapor and / or oxygen. This can be carried out in particular in a reactor device in which the
- the catalyst in the after-treatment at a temperature of at least 200 ° C, preferably at a temperature of at least 350 ° C, preferably at a temperature of at least 400 ° C, preferably at a temperature in the range of 200 ° C to 650 ° , preferably at a temperature in the range of 300 ° C to 650 ° C, preferably at a temperature in the range of 350 ° C to 600 ° C, preferably at a temperature in the range of 350 ° C to 550 ° C, preferably at one temperature in the range of 350 ° C to 400 ° C, or
- Catalyst precursor mixture which is preferably obtained by means of a hydrothermal synthesis, for example in an oxygen-containing atmosphere for a predefinable period of time, in particular in the range of 2 h to 4 h, a predefinable Temperature, in particular in the range of 175 ° C to 250 ° C, exposed and then prefers in a stream of an inert gas for a predefinable period of time, in particular in the range of 2 hours to 6 hours, a predefinable
- the particular temperature is preferably at a heating rate in the range of 5 ° C / min to 15
- the flow of the inert gas is preferably in the range from 50 ml / min to 150 ml / min, preferably 100 ml / min. Calcination, before the
- an aqueous solution of ammonium heptamolybdate tetrahydrate, telluric acid, vanadyl sulfate and niobium (V) -ammonium oxalate hydrate is preferably mixed with stirring at 80 ° C., the resulting suspension being stirred at elevated temperature, preferably at temperatures in the range from 175 ° C to 185 ° C, and a synthesis time in the range of preferably 24 hours to 120 hours is stirred.
- the calcination removes the volatile constituents of the precursor mixture and in particular converts the metal elements of the catalyst into their respective oxides.
- the catalyst to be subjected to the post-treatment is a metal oxide catalyst comprising the elements Mo, V, Te, Nb.
- it is the added, the after-treatment
- a catalyst of the class MoV a Te b Nb c O x wherein a is preferably in the range of 0.05 to 0.4, and wherein b is preferably in the range of 0.02 to 0.2, and wherein c preferably in the range of 0.05 to 0.3.
- a is preferably in the range of 0.12 to 0.25, wherein b is preferably in the range of 0.04 to 0.1, and wherein c is preferably in the range of 0.1 to 0.18.
- Mo can be present in the oxidation state +5 as well as in the oxidation state +6.
- V can be present in the oxidation state +4 and +5, depending on the position in the crystal.
- Niobium is present in the +5 oxidation state.
- Tellurium is present in the oxidation state +4.
- the catalyst in the after-treatment for a period of at least one hour, in particular for a period in the range of one to five hours, in particular for a period of time of one to 4 hours, in particular for a period of time in the range of one hour to three hours, in particular for a period of time in the range of one hour to two hours is brought into contact with oxygen.
- the catalyst is brought into contact with the post-treatment with a mixture comprising water vapor and oxygen, in which case preferably the temperature of Water vapor and oxygen, the time of contact with the mixture and the prevailing pressure in the respective intersection of the ranges for water vapor and oxygen with separate contact.
- the catalyst is preferably brought into contact with the after-treatment in any sequence, in particular alternately, either with water vapor or with oxygen, in particular in the above-mentioned conditions in terms of temperature, pressure and time span, where also sequences can be present in which Catalyst with the above mixture of water vapor and oxygen is applied.
- the catalyst is used in the
- Post-treatment with the oxygen brought into contact by the catalyst oxygen in the form of pure oxygen (the concentration of oxygen preferably at least 90 vol .-%, at least 95 vol .-%, at least 98 vol .-% or at least 99 vol. %), in the form of air, in particular oxygen-enriched or depleted air, or in the form of a mixture comprising oxygen and at least one further gas, in particular from the group steam, He, Ar and N 2 , is fed, wherein oxygen in the mixture preferably with one
- the oxygen required for the aftertreatment of the catalyst is provided by means of a known pressure swing adsorption.
- the problem of the invention is achieved by a catalyst having the features of claim 11, which by the Stanfordsl invention. Aftertreatment process was prepared. Furthermore, the problem of the invention by a method for oxidative dehydrogenation with the features of claim 12 is achieved.
- the ODH process comprises the process steps of the production process according to the invention, wherein a feed stream containing an alkane (preferably having two to four carbon atoms), in particular ethane, is fed in a reactor means the aftertreated catalyst, wherein by oxidative dehydrogenation of the alkane with Oxygen in the presence of the aftertreated catalyst an alkene-containing product stream is generated.
- a feed stream containing an alkane preferably having two to four carbon atoms
- Oxygen in the presence of the aftertreated catalyst an alkene-containing product stream is generated.
- the catalyst outside the reactor device is subjected to the aftertreatment, e.g. at a location remote from the reactor means, and then transported in a post-treated form, i.e. after aftertreatment, to the reactor means where it is properly located in the reactor means.
- the aftertreated catalyst can be used in the reactor equipment for the ODH.
- Reactor device is arranged, and then in the reactor device of
- Catalyst is being replaced or a catalyst is post-treated according to the invention or a catalyst is regenerated with a suitable procedure. As a result, e.g. ensure that an ODH can be performed continuously. Thus, e.g. from a reactor device with
- catalyst device can then be filled a new catalyst be there and possibly post-treated while the ODH in the other
- Diluent is introduced into the reactor device, which is inert or at least one inert component, in particular to control the heat of reaction in the oxidative dehydrogenation of the alkane, in particular to prevent an explosion in the oxidative dehydrogenation of the alkane.
- Preferred diluent is one of the following substances or a
- the catalyst itself may be diluted with an inert material.
- Catalyst can be diluted prior to the aftertreatment according to the invention with the inert material or after the aftertreatment according to the invention.
- the inert material may preferably be one of the following or any combination of the following: alumina, silica,
- Silicon carbide, quartz or ceramics Silicon carbide, quartz or ceramics.
- the (especially post-treated) catalyst may e.g. in the reactor device in the form of at least one fixed bed, which is formed from at least a plurality of those first catalyst having particles, in particular those first particles also have the inert material and / or wherein the fixed bed for
- Diluting the catalyst comprises a plurality of second particles mixed with the first particles and formed from the inert material.
- oxygen or air is preferably added to the reactor device
- nitrogen can be enriched or discharged in the air, furthermore, oxygen can be enriched or depleted in the air.
- the catalyst was aftertreated only under helium atmosphere, while it was treated in the lower diagram under synthetic air (each at a pressure of 1 bar).
- Catalysts e.g. based on the metals V, Cr, Dy, Ga, Sb, Mo, Ni, Nb, Co, Pt, or Ce or their oxides or mixtures, in particular vanadium oxides, NiNbOx conceivable.
- the catalyst may also be diluted by a suitable inert material or diluted in the catalyst body. For practical implementation, it then depends on maximizing activity and selectivity.
- this maximization is favored inter alia by the proportion of the M1 phase.
- the portion of this M1 phase is crucial for the selective oxidation of hydrocarbons and the highest possible ratio M1: M2 is to be strived for.
- FIG. 6 shows the distribution between M1, M2 and amorphous phase for different catalyst patterns K ' after-treated according to the invention.
- the proportion of M1 phase varies between 20% by weight and 90% by weight, while the proportion of M2 phase is below 10% by weight. The remainder is present as an amorphous phase.
- the post-treatment can achieve M1 contents of between 20% by weight and at least 90% by weight, preferably more than 70% by weight.
- the catalyst K can first be prepared by a suitable synthesis.
- the hydrothermal synthesis can be used (cf. Example 1).
- the proportion of the M1 phase could be further increased, with M1 contents of over 90 wt .-% were achieved.
- the M1 phase is the only active phase in the ODH.
- the M2 phase can further oxidize the alkene, it does not activate the underlying alkane.
- Fig. 1 shows the rate constant ki (in units of pmolg " V bar " 1 ) for the ODH C 2 H 6 -> C 2 H 4 at 370 ° C on the abscissa A and the M1 concentration (in% by weight) of the particular MoVTeNbO x catalyst used on the ordinate B. Thereafter, the rate constant increases in proportion to the concentration of the M1 phase.
- the M1 concentration can be increased when the catalyst is e.g. according to the
- Oxygen or air according to Examples 4 and 5 is treated.
- the air used here may also be synthetically produced or be enriched in oxygen or nitrogen.
- a treatment step may also be by feeding another inert or diluent medium, or a mixture may be used (e.g., a mixture of water vapor and (e.g., synthetic) air or oxygen).
- the V content represents a relevant size on the surface of the catalyst.
- LEIS spectroscopy which is the so-called low-energy ion scattering, a spectroscopic method that can determine the chemical composition of the outermost layer of a solid
- the concentration of vanadium (V / (Mo + V + Te + Nb)) on the surface of the MoVTeNbO x catalyst and on the ordinate B the microbicomponent correlates. Concentration of the catalyst is applied.
- Catalyst was an appropriate amount of ammonium heptamolybdate
- the remaining gas was purged volume before synthesis with N 2.
- the hydrothermal treatment was carried out at temperatures in the range of 175 ° C to 185 ° C and the synthesis time was 24 to 120 hours. Thereafter, the catalyst was filtered, washed with double-distilled water and dried at 80 ° C overnight. The calcination was carried out in two steps: 2 hours at 250 ° C in synthetic air followed by a thermal treatment at 600 ° C
- Diffractograms of a Rietveld grating refinement were performed to calculate the proportion of different crystalline phases in wt .-%.
- the amorphous contribution was also quantified by calibration using an amorphous and a highly crystalline standard).
- 50 became a sample with a nominal formula (Chemical composition determined by ICP-OES: MoVo i 3 Te 0. o 6 Nbo ioO x where ICP-OES is the so-called Inductive Coupled Plasma Optical Emission
- the fresh catalyst K contained about 3.5 wt .-% M2 phase, but only 0.05 wt .-% M2 phase after the post-treatment with 0 2 .
- in situ XRD it was observed that the post-treatment with O 2 allows recrystallization of the inactive M2 phase into the active M1 phase (see Fig. 7). This phenomenon is not observed when the same thermal treatment is carried out under inert gas (see Fig. 7).
- As a result of the higher M1 concentration of the post-treated catalyst K 'an increase in the ethene yield in the activity tests (temperature 370 ° C to 430 0 C, 300mg to 315 mg of catalyst, flow 33 mL / min to 74 mL / min) was found become.
- Figure 3 shows an embodiment of the invention for the oxidative dehydrogenation of an alkane to the corresponding alkene, e.g. Ethane to ethene, using a catalyst according to the invention K '.
- feed gases feedstock stream E
- alkane in the present case ethane
- oxygen and / or air as oxidizing agent 10 in a reactor device 1
- a catalyst K ' is fed, which is an inventively post-treated MoVTeNbO x catalyst.
- Reactor device 1 are introduced or only there by application of water vapor and / or oxygen to undergo a post-treatment ( ⁇ -> ⁇ ') with the M1 content is increased.
- the ethane is oxidatively oxidized to give an ethylene-containing product stream P (in place of ethane, propane and / or butane are also suitable as the insert). This is a highly exothermic process. Especially in the formation of
- Water vapor may have 1 1.
- the ethylene-containing stream P is withdrawn from the reactor device 1 and cooled against the insert E 12, then further cooled 9, 8 and in one
- Separator 2 separated into a liquid phase and a gaseous phase.
- the liquid phase consists essentially of water and is discarded 7 or evaporated if necessary against the product stream P to produce the steam 1 1 9.
- C0 2 removal unit 3 C0 2 contained in the product stream P is removed 5.
- Separation part 3 ' in which inert 4 (e.g., N 2, Ar, He) and unreacted ethane E' are removed from the product stream P and recycled to reactor device 1 and feed E, respectively, with inert 4 as diluent V in the
- Reactor device 1 can be returned or possibly discharged from the process 6.
- the reactor device 1 can be designed both isothermally and adiabatically.
- process data for the reactor device 1 in the form of an isothermal reactor e.g. carried out as a salt-melting reactor
- the following parameters can be used, for example:
- Feed compositions feed stream E:
- the WHSV weight hourly space velocity
- the WHSV is preferably in the range of 1.0 kg to 40 kg C 2 H 6 / h / kg cat, preferably in the range of 2 kg to 25 kg C 2 H 6 / h / kg cat, particularly preferably in the range of 5 kg to 20 kg C 2 H 6 / h / kg cat.
- process data for the reactor device 1 in the form of an adiabatic reactor for example, the following parameters can be used:
- Feed compositions feed stream E:
- the WHSV is preferably in the range of 2.0 kg to 50 kg C 2 H 6 / h / kgKat, preferably in the range of 5kg to 30 kg C 2 H 6 / h / kgKat, more preferably in the range of 10 kg to 25 kg C. 2 H 6 / h / kg cat.
- a following optional second or further fixed bed can be designed without intert material.
- Another aspect is the avoidance of potentially explosive atmospheres in order to exclude hazards to people, the plant and the environment.
- partial decomposition of the product stream P can lead to an accumulation of unreacted oxygen in substreams, so that once again a critical composition can result.
- Composition is to be avoided.
- this is for example by the use of washes, adsorbents or a targeted Abresure force of unreacted 0 2 (cf., for example, US20100256432).
- washes, adsorbents or a targeted Abresure force of unreacted 0 2 cf., for example, US20100256432.
- this means additional investment and operating costs as well as a burden on the environment.
- Reactor outlet only minimal 0 2 concentrations can be achieved.
- This can also be used to operate a multi-stage reactor design, in which only small amounts 0 2 are added in each stage, so that safe operation outside the relevant explosion areas is also possible here.
- This also promotes the selective formation of ethylene and suppresses the further oxidation to CO and CO 2.
- the heat development can be safely controlled, as only in oxidation, ie in the presence of an appropriate amount of 0 2 , heat is released. In each further reactor stage is then again fed a
- FIG. 4 shows on the lower abscissa D the time in hours and on the upper abscissa G the 0 2 concentration at the inlet of the reactor device (mol%), where on the ordinate F the conversion of O 2 or C 2 H 6 into % is applied.
- Fig. 5 shows on the lower abscissa the D the time in hours and on the upper
- Post-treatment optimized catalyst K ' which advantageously allows operation under low oxygen concentrations at the outlet of the reactor device 1.
- a gas stream of 24.63 Nl / h consisting of 81, 8 vol .-% N 2 , 9, 1 vol .-% 0 2 and 9, 1 vol .-% ethane is passed through a catalyst bed (length 72mm) consisting of 4 , 0 g of a MoV a Te b according to the invention Nb c O x catalyst K ' , with steam
- the pressure is varied between 1 and 5 bar at a temperature of 370 ° C and 400 ° C.
- the product gas is cooled by means of a heat exchanger with water cooling and then the composition by gas chromatography analyzed. This results in the conversions and selectivities that can be seen and calculated from the following Table 5.
- V diluent e.g. Steam
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Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP14748127.9A EP3041605A1 (de) | 2013-08-27 | 2014-08-07 | Verfahren zur herstellung eines katalysators, katalysator sowie verfahren für die oxidative dehydrierung von kohlenwasserstoffen |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013014241.5A DE102013014241A1 (de) | 2013-08-27 | 2013-08-27 | Verfahren zur Herstellung eines Katalysators, Katalysator sowie Verfahren für die oxidative Dehydrierung von Kohlenwasserstoffen |
| EP13004750 | 2013-10-02 | ||
| EP14748127.9A EP3041605A1 (de) | 2013-08-27 | 2014-08-07 | Verfahren zur herstellung eines katalysators, katalysator sowie verfahren für die oxidative dehydrierung von kohlenwasserstoffen |
| PCT/EP2014/002176 WO2015028121A1 (de) | 2013-08-27 | 2014-08-07 | Verfahren zur herstellung eines katalysators, katalysator sowie verfahren für die oxidative dehydrierung von kohlenwasserstoffen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3041605A1 true EP3041605A1 (de) | 2016-07-13 |
Family
ID=51298707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP14748127.9A Pending EP3041605A1 (de) | 2013-08-27 | 2014-08-07 | Verfahren zur herstellung eines katalysators, katalysator sowie verfahren für die oxidative dehydrierung von kohlenwasserstoffen |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US10065183B2 (de) |
| EP (1) | EP3041605A1 (de) |
| AU (1) | AU2014314640C1 (de) |
| BR (1) | BR112016004170A2 (de) |
| CA (1) | CA2922427C (de) |
| EA (1) | EA032182B1 (de) |
| MY (1) | MY192802A (de) |
| WO (1) | WO2015028121A1 (de) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2953891C (en) | 2014-06-30 | 2022-11-08 | Shell Internationale Research Maatschappij B.V. | Treatment of a mixed metal oxide catalyst containing molybdenum, vanadium, niobium and optionally tellurium |
| US20170137348A1 (en) * | 2014-06-30 | 2017-05-18 | Shell Oil Company | Alkane oxidative dehydrogenation and/or alkene oxidation |
| WO2017072086A1 (en) | 2015-10-26 | 2017-05-04 | Shell Internationale Research Maatschappij B.V. | Ethane oxidative dehydrogenation and acetic acid recovery |
| EP3246090A1 (de) * | 2016-05-19 | 2017-11-22 | Shell Internationale Research Maatschappij B.V. | Behandlung eines mischmetalloxidkatalysators mit molybdän, vanadium, niob und gegebenenfalls tellur |
| CA2945435C (en) * | 2016-10-18 | 2025-09-02 | Nova Chemicals Corporation | OXIDATING DEHYDROGENATING CATALYST TREATMENT WITH PEROXIDE AND LOW PRESSURE HYDROTHMIC GAS RELEASE |
| CN106588539B (zh) * | 2016-11-24 | 2019-04-23 | 中国石油大学(华东) | 使用修饰型铂催化剂催化乙烷氧化脱氢制乙烯的方法 |
| DE202018107395U1 (de) | 2017-12-27 | 2019-03-13 | PTT Global Chemical Public Company Ltd. | Katalysator zur Herstellung von Ethylen aus einer oxidativen Dehydrierung von Ethan |
| CA2999092A1 (en) * | 2018-03-26 | 2019-09-26 | Nova Chemicals Corporation | Calcination process to produce enhanced odh catlyst |
| WO2020016828A2 (en) * | 2018-07-19 | 2020-01-23 | Nova Chemicals (International) S.A. | Catalysts for the oxidative dehydrogenation of alkanes |
| CA3050795A1 (en) * | 2018-08-03 | 2020-02-03 | Nova Chemicals Corporation | Oxidative dehydrogenation catalysts |
| CA3050720A1 (en) * | 2018-08-03 | 2020-02-03 | Nova Chemicals Corporation | Oxidative dehydrogenation catalyst compositions |
| CN117295702A (zh) * | 2021-04-28 | 2023-12-26 | 诺瓦化学品(国际)股份有限公司 | 氧化脱氢(odh)反应器系统中进料稀释的集成 |
| US11890594B2 (en) | 2021-12-30 | 2024-02-06 | Uop Llc | Chemical homogeneity and catalytic performance of mixed-metal oxide catalysts |
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| WO2013002029A1 (ja) * | 2011-06-28 | 2013-01-03 | 旭化成ケミカルズ株式会社 | 酸化物触媒 |
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| US2325287A (en) | 1940-06-13 | 1943-07-27 | Universal Oil Prod Co | Process for hydrocarbon conversion |
| US2371087A (en) * | 1942-03-27 | 1945-03-06 | Universal Oil Prod Co | Catalytic dehydrogenation process |
| US3387053A (en) | 1965-11-12 | 1968-06-04 | Monsanto Co | Dehydrogenation catalyst and process |
| US3363023A (en) * | 1967-01-09 | 1968-01-09 | Sinclair Research Inc | Process and catalyst for dehydro-genation of neohexane |
| CA1108114A (en) * | 1977-04-14 | 1981-09-01 | Gregor H. Riesser | Dehydrogenation catalyst |
| BR9203080A (pt) | 1991-08-08 | 1993-03-30 | Mitsubishi Chem Ind | Processo e catalisador para a producao de uma nitrila,e processo para produzir o dito cartlaisador |
| DE19502747C1 (de) | 1995-01-18 | 1997-04-24 | Mannesmann Ag | Katalysator zum oxidativen Dehydrieren oder Cracken von paraffinischen Kohlenwasserstoffen |
| WO2009106474A2 (en) * | 2008-02-25 | 2009-09-03 | Olaf Timpe | Phase-enriched movtenb mixed oxide catalyst and methods for the preparation thereof |
| CA2655841C (en) * | 2009-02-26 | 2016-06-21 | Nova Chemicals Corporation | Supported oxidative dehydrogenation catalyst |
| US8519210B2 (en) * | 2009-04-02 | 2013-08-27 | Lummus Technology Inc. | Process for producing ethylene via oxidative dehydrogenation (ODH) of ethane |
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2014
- 2014-08-07 WO PCT/EP2014/002176 patent/WO2015028121A1/de not_active Ceased
- 2014-08-07 AU AU2014314640A patent/AU2014314640C1/en not_active Ceased
- 2014-08-07 BR BR112016004170A patent/BR112016004170A2/pt not_active Application Discontinuation
- 2014-08-07 EP EP14748127.9A patent/EP3041605A1/de active Pending
- 2014-08-07 MY MYPI2016700652A patent/MY192802A/en unknown
- 2014-08-07 CA CA2922427A patent/CA2922427C/en active Active
- 2014-08-07 EA EA201690468A patent/EA032182B1/ru not_active IP Right Cessation
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| WO2013002029A1 (ja) * | 2011-06-28 | 2013-01-03 | 旭化成ケミカルズ株式会社 | 酸化物触媒 |
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|---|---|
| AU2014314640C1 (en) | 2018-06-28 |
| AU2014314640A1 (en) | 2016-03-10 |
| US20160207035A1 (en) | 2016-07-21 |
| BR112016004170A2 (pt) | 2017-09-12 |
| AU2014314640B2 (en) | 2018-03-22 |
| EA201690468A1 (ru) | 2016-09-30 |
| US10065183B2 (en) | 2018-09-04 |
| CA2922427A1 (en) | 2015-03-05 |
| MY192802A (en) | 2022-09-09 |
| WO2015028121A1 (de) | 2015-03-05 |
| CA2922427C (en) | 2021-10-19 |
| EA032182B1 (ru) | 2019-04-30 |
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