EP3894062A1 - Reaktorkaskade und verfahren zum betreiben einer reaktorkaskade - Google Patents
Reaktorkaskade und verfahren zum betreiben einer reaktorkaskadeInfo
- Publication number
- EP3894062A1 EP3894062A1 EP20704417.3A EP20704417A EP3894062A1 EP 3894062 A1 EP3894062 A1 EP 3894062A1 EP 20704417 A EP20704417 A EP 20704417A EP 3894062 A1 EP3894062 A1 EP 3894062A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reaction
- reactor
- pressure
- unit
- educt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 158
- 238000010521 absorption reaction Methods 0.000 claims abstract description 43
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 36
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 36
- 239000007795 chemical reaction product Substances 0.000 claims description 26
- 239000002250 absorbent Substances 0.000 claims description 23
- 230000002745 absorbent Effects 0.000 claims description 23
- 239000007858 starting material Substances 0.000 claims description 22
- 239000007789 gas Substances 0.000 claims description 21
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 18
- 239000001569 carbon dioxide Substances 0.000 claims description 18
- 239000001257 hydrogen Substances 0.000 claims description 16
- 229910052739 hydrogen Inorganic materials 0.000 claims description 16
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 14
- 239000013543 active substance Substances 0.000 claims description 8
- 238000003795 desorption Methods 0.000 claims description 8
- 239000000376 reactant Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims 2
- 239000003054 catalyst Substances 0.000 description 12
- 239000000047 product Substances 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000010924 continuous production Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 239000002594 sorbent Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- NQLVQOSNDJXLKG-UHFFFAOYSA-N prosulfocarb Chemical compound CCCN(CCC)C(=O)SCC1=CC=CC=C1 NQLVQOSNDJXLKG-UHFFFAOYSA-N 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/02—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
- B01J8/06—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds in tube reactors; the solid particles being arranged in tubes
- B01J8/065—Feeding reactive fluids
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/15—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively
- C07C29/151—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases
- C07C29/1512—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases characterised by reaction conditions
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/15—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively
- C07C29/151—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases
- C07C29/152—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of oxides of carbon exclusively with hydrogen or hydrogen-containing gases characterised by the reactor used
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/74—Separation; Purification; Use of additives, e.g. for stabilisation
- C07C29/76—Separation; Purification; Use of additives, e.g. for stabilisation by physical treatment
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C31/02—Monohydroxylic acyclic alcohols
- C07C31/04—Methanol
-
- 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
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/00106—Controlling the temperature by indirect heat exchange
- B01J2208/00168—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles
- B01J2208/00176—Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles outside the reactor
-
- 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
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/00106—Controlling the temperature by indirect heat exchange
- B01J2208/00265—Part of all of the reactants being heated or cooled outside the reactor while recycling
- B01J2208/00283—Part of all of the reactants being heated or cooled outside the reactor while recycling involving reactant liquids
-
- 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
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00539—Pressure
-
- 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
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00796—Details of the reactor or of the particulate material
- B01J2208/00893—Feeding means for the reactants
-
- 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
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/02—Processes carried out in the presence of solid particles; Reactors therefor with stationary particles
- B01J2208/023—Details
- B01J2208/027—Beds
-
- 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
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/06—Details of tube reactors containing solid particles
Definitions
- the invention relates to a reactor cascade according to the Oberbe handle of claim 1 and a method for operating a reactor cascade according to the preamble of the claim
- Fossil energy sources cause carbon dioxide emissions that are not in line with global climate protection goals.
- regenerative energy sources generate electricity, which, however, is not always available with the same output, i.e. is subject to fluctuations.
- Approaches are currently being sought to make sensible use of this available electrical, regeneratively generated electricity and, for example, to produce chemical products of value.
- One possibility is the electrochemical conversion of water into hydrogen and oxygen. The hydrogen generated can then react with carbon dioxide as the starting molecule, which would simultaneously reduce carbon dioxide emissions.
- the relatively easily available carbon dioxide which is not supposed to be released into the atmosphere anyway, can thus be used as an inexpensive source of carbon.
- methanol is a possible product of a one-step synthesis from carbon dioxide and hydrogen according to the following equation:
- a disadvantage of the synthesis of methanol from carbon dioxide and hydrogen is low equilibrium conversions, which are only about 20 percent at 50 bar and 250 degrees Celsius. A large part of the gaseous starting materials must therefore be circulated. Due to the pressure losses that occur in a reactor, the gas has to be recompressed for this, which is very energy-intensive and significantly reduces the efficiency of the process. Besides these energetic disadvantages Such a recirculated gas recycling process is only slightly suitable for dynamic operation of the system, which is particularly unfavorable in particular with the fluctuating current sources of the regenerative energy sources.
- a continuous process management is in the
- stirred tank reactions are more expensive than tubular reactors, especially at high pressures. Furthermore, their capacity is limited depending on the pressure. For this reason, they are less suitable for large-scale conversions of carbon dioxide and hydrogen to methanol.
- stirred reactors contain moving components compared to tubular reactors, which generally entail higher maintenance costs.
- the object of the invention is to provide a continuous process for the synthesis of equilibrium-limited reactions which, compared to the prior art, requires less energy, that is, requires a higher degree of efficiency, and, if suitable for large-scale processes, requires less maintenance than the prior art Technology.
- the solution to the problem consists in a reactor cascade for implementing equilibrium-limited reactions according to claim 1 and in a method for carrying out an equilibrium-limited reaction according to claim 8.
- the reactor cascade according to the invention for the implementation of equilibrium-limited reactions has at least two reactor units each in the form of a tubular reactor.
- Each of the reactor units comprises a reaction part and an absorption part.
- the reaction part in turn has an educt inlet and the absorption part has an educt outlet to discharge excess educts.
- the present invention makes it possible to pass on excess products without further processing, in particular without further energy-intensive compression, in a similar further reactor unit, in which the same reaction can only be continued with slightly changed, reduced pressure ratios.
- the reduction in the pressure conditions only slightly influences the efficiency of the equilibrium-limited reaction that takes place in the second reaction unit.
- An inexpensive tubular reactor can be used that does not require any moving parts and therefore requires little maintenance.
- this cascade of reactions is particularly well suited for use in continuous processes.
- the tubular reactor part of the reaction unit is designed in such a way that the educt inlet is provided at one end of the tubular reactor part and is arranged at the other end of the reactor of the absorption part.
- the absorption part is preferably flanged to the reaction part at this point by a flange. This structure also contributes to a simplification of the construction and thus to a cost-effective representation of the reaction cascade.
- the separation of the reaction unit into a reaction part and into an absorption part also has the advantage that the absorbent is only present in the spatially separate absorption part and thus contact of the absorption by means of the catalyst materials present in the reaction part is avoided. Touching the catalyst material and the absorbent would significantly reduce the efficiency of the reaction and the effectiveness of the catalyst.
- a gas filter device is particularly suitable for this.
- the absorption part is arranged.
- tubular is understood to mean an elongated hollow structure which has an aspect ratio that is greater than three, preferably greater than six, particularly preferably greater than eight.
- the cross section of the tubular reactor housing is preferably round or oval, but other cross sections such as, for example, rectangular or square are also understood to be tubular.
- the reaction cascade is preferably designed in such a way that the absorption part of the reaction unit also has an absorption medium outlet in addition to the educt outlet.
- the absorbent outlet is preferably connected to a desorption unit, so that the discharged absorbent loaded with product can be separated from it in the desorption unit and then the prepared or discharged absorbent can be introduced back into the absorption part at low cost.
- the overwritten reaction cascade allows the overwritten reaction cascade to be designed in such a way that the respective reaction units are designed in the same way in terms of their construction principle and shape.
- the same term is understood to mean that in each case one, preferably vertical, tubular reactor is provided, on the lower part of which the absorption part is attached or flanged.
- the same term is also understood to mean that the individual reaction units along the cascade can in principle be reduced in volume, in particular in the form of their reaction volume in the reaction part. But they only have a shrunk geometry, the design remains the same.
- the preferred shrinkage of the reaction volume from the first reaction unit to the second reaction unit is also due to the fact that less excess reactant gas is removed and discharged from the first reaction unit, than is initially introduced into the first reaction unit.
- the second and the subsequent further reaction unit can thus be made smaller and thus less expensive.
- Another component of the invention is a method for carrying out an equilibrium-limited reaction according to claim 7. Thereafter, educts are passed into a reaction part of a reaction unit, the reaction part being at least partially filled with a porous, catalytically active substance.
- the gaseous starting materials flow through this catalytic substance, the starting material (s) being at least partially converted to one or more reaction products on a surface of the catalytically active substance.
- the reaction product and excess educt from the reaction part is then passed into an absorption part of the reaction unit and the reaction product is absorbed there by an absorbent. Excess gaseous starting material is separated from the reaction product by means of a gas filter device.
- a pressure pl is present in the reaction unit described.
- the invention is characterized in that the separated starting material is passed through a pressure reducing device with a pressure p2, which is lower than the pressure p1, introduced into a second reaction unit.
- the advantage of the inventive method described is analogous to the advantages that have already been described with regard to the inventive device, is that a continuous reaction of equilibrium-limited reactions can take place. It is possible to dispense with the use of moving parts in the reaction unit, and the process described and the reaction cascade described are suitable for large-scale use.
- a starting material which is introduced into the reaction part. Basically, the conversion of a single chemical substance on a catalyst upper possible in one or more reaction products.
- an educt or an educt gas is introduced which comprises both carbon dioxide and hydrogen and thus consists of at least two chemical compounds.
- One or more chemical compounds can be formed as the reaction product.
- carbon dioxide and hydrogen methanol is formed as the reaction product with a suitable choice of the catalyst.
- the terms educt and reaction product are understood to mean both the singular and the plural.
- the pressure pl is present in the first reaction unit. Since the system is closed to the outside, this pressure is essentially present in the entire reaction unit, apart from process-related fluctuations.
- the educt in the first reaction unit thus also has the pressure p1.
- the pressure-reducing device reduces the pressure acting on the starting material, it is introduced at pressure p2 into the second reaction unit, the second reaction unit being operated essentially at precisely this pressure p2.
- reaction-related local pressure fluctuations can also occur here.
- a third reaction unit can be provided, which is operated at a pressure p3, the pressure p3 again being lower than the pressure p2. This is expedient since, even during the reaction in the second reaction unit, unused starting material occurs in the absorption part, which in turn is introduced into the third reaction unit with only a slight pressure loss.
- the difference between the pressures p1, p2 and p3 is preferably between 0.5 bar and 10 bar.
- the reaction cascade described can comprise any number of reaction units 1 to n, the number n of reaction cascades in which the process according to the invention is carried out being determined by how much unused starting material in the respective reaction process remains in the reaction part and whether it is economically worthwhile to transfer this excess educt into another reaction unit.
- the n reaction units are operated with falling pressure from the first to the nth reaction unit.
- the reaction part of the reaction unit is preferably tubular, so that the educt flows through it along its longitudinal extent.
- This flow through a tubular reaction part leads to the fact that excess educts and products are ultimately passed through the reaction part and can then be separated from one another by the catalyst-containing reaction part in the absorption part.
- the flow through the reaction part in the longitudinal direction makes it possible to dispense with moving parts in the reaction part, which reduces its production costs.
- the absorbent which is loaded with the reaction product or products, is passed through a sorbent outlet and into a desorption unit, where it is discharged from the reaction product.
- the discharged absorbent can subsequently be reintroduced into the absorption part.
- FIG. 2 is a schematic representation of the processing of
- FIG. 1 shows a schematic representation which serves as an example of a reaction cascade which is suitable for implementing reactions which are limited in equilibrium, shown here using the example of carbon dioxide and hydrogen with as little loss as possible.
- carbon dioxide and hydrogen as educt or educt gas are introduced into a reaction unit 4 using a compressor at elevated pressure, which is, for example, greater than 30 bar.
- the educt 18 is introduced into a reaction part 6 via a educt inlet 10.
- a catalytically active substance 30 is arranged in the reaction part 6.
- This catalytically active substance 30, which is also referred to in the further term as catalyst 30, can be present in various configurations. In a very practical and simple embodiment, the catalyst 30 is present as a powder bed in the reaction part 6.
- porous sintered bodies which contain the catalyst 30 at least on their surface can also be fitted into the reaction part 6.
- the reaction part 6 is preferably tubular, whereby the term tubular is understood to mean that the length-width ratio, that is to say the aspect ratio of the reaction part 6, is greater than 1, preferably greater than 5.
- an absorption part 8 is arranged, the absorption part 8 and the reaction part 6 preferably being spatially closely connected to one another.
- the absorption part 8 is flanged directly to the reaction part 6 through a flange 42.
- This structure of the reaction unit 4 is particularly cost-effective.
- a gas filter device 32 which can be configured, for example, in the form of a sintered plate or in the form of a perforated tube.
- this absorption part there is also an sorbent 14.
- the gas filter device 32 is completely surrounded by the liquid absorbent 14.
- reaction product 26 is also drawn in by the flow of the starting material 18 and is continuously introduced from the reaction part 6 into the absorption part 8.
- reaction product 26 and the excess educt 14 in the form of the gas mixture carbon dioxide and hydrogen together in gaseous form.
- This gaseous mixture of starting material 14 and product 26 is passed through the gas filter device 32, the product 26, in the example given the methanol by the absorbent 14, in the rule gel or preferably in the form of an ionic liquid, absorbed.
- the gaseous starting materials 18 are selectively not absorbed by the absorbent 14 and collect in a gas space 44 of the absorption part 8. From the gas space 44 of the absorption part 8, a connecting line 20 is provided, in or on which a pressure reduction valve 16 is provided .
- the second reaction unit 200 has a reaction pressure p2 which is approximately 2 bar lower than the reaction pressure p1 at which the first reaction unit 100 is operated.
- the pressure reduction has the effect that it is not necessary to recompress the recovered or excess educt 18 by an energetically complex and technically costly compression process. Only the pressure in the next reaction unit in which the starting material is already present is used and the reaction described is carried out again with slightly changed thermodynamic parameters.
- reaction cascade 2 which has at least two reaction units 4, 100, 200, the final number n of reaction units 4 being determined by process-technical framework conditions and depending on sales, total volume of the reaction units and product requirements and on economic considerations.
- the design of the reaction unit 4 or 100 and 200 is technically relatively inexpensive, since moving parts, for example, such as stirrers, which have to be driven and have storage devices, can be dispensed with.
- moving parts apart from the first compressor 40, which compresses the starting material into the first reaction unit 100, can be dispensed with.
- the reaction cascade 2 shown in Figure 1 has three reaction parts 4, which is a purely exemplary schematic representation.
- reaction units 4, 100, 200 and 300 shown the same size. They are also represented in the same way. This has the advantage that series production of a plurality of reaction units 4 can in turn also be inexpensive.
- the volume of the reac tion unit or the reaction part and possibly also the absorption part 8 shrinks, but its design changes little.
- the shrinking of the reaction volume is due to the fact that the reactant 18 is introduced only once into the cascade in the proposed embodiment. It is therefore no further educt initiated during the course of the reaction in the following reaction units 200 and 300, since this would mean a further energy expenditure by compression of the basic educt 18.
- the volume of the starting material 18 available also decreases within the cascade 2 in the further reaction units 200 and 300, which is why the reaction volume in the reaction part 206 and 306 of the reaction units 200 and 300 can be successively reduced.
- FIG. 2 illustrates the circulation of the absorption by means of 14, specifically in the phase in which it leaves the absorption part 6 at the absorption medium outlet 22.
- a desorption unit 24 is provided, in which the absorbent 14 loaded with the reaction product 26 is freed from it.
- This so-called regeneration of the absorption means 14 can be carried out by reducing the pressure and / or increasing the temperature.
- the introduction of a so-called strip gas for desorption can also be useful.
- the gas thus freed from the absorbent 14, which contains the reaction products 26, is further passed into a heat exchanger 38 in which the reaction product 26, for example methanol, is formed by condensation of the remaining gaseous components, which in particular contain the reactant gases carbon dioxide and hydrogen , is separated.
- the reaction products can be removed for further processing.
- the educts 18 and 18 ' which are also recovered from this, can be fed back into the process and introduced into the first reaction unit 100 via the compressor 40.
- the discharged absorbent which is denoted here by 14 ', is tempered and reintroduced as an unloaded absorbent 14 via an absorbent feed 36 into the absorption part 8.
- the reaction of carbon dioxide and hydrogen to methanol and water, which takes place on the catalytically active substance 30 in the reaction part 6, is exothermic. This means that the reaction part 6 heats up. Countercurrent cooling through an outer wall of the reaction part 6 is expedient.
- the reaction part 6 is preferably double-walled in its outer shell.
- the thermal energy obtained in this way can be used for temperature control in other ways, for example for temperature control of the educt gas 18.
- the energy which the absorption medium 14 has after the discharge can also be used.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102019201172.1A DE102019201172A1 (de) | 2019-01-30 | 2019-01-30 | Reaktorkaskade und Verfahren zum Betreiben einer Reaktorkaskade |
PCT/EP2020/052002 WO2020157042A1 (de) | 2019-01-30 | 2020-01-28 | Reaktorkaskade und verfahren zum betreiben einer reaktorkaskade |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3894062A1 true EP3894062A1 (de) | 2021-10-20 |
Family
ID=69528768
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20704417.3A Withdrawn EP3894062A1 (de) | 2019-01-30 | 2020-01-28 | Reaktorkaskade und verfahren zum betreiben einer reaktorkaskade |
Country Status (5)
Country | Link |
---|---|
US (1) | US20220111346A1 (de) |
EP (1) | EP3894062A1 (de) |
CN (1) | CN113365724A (de) |
DE (1) | DE102019201172A1 (de) |
WO (1) | WO2020157042A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20240293788A1 (en) * | 2021-06-10 | 2024-09-05 | Universiteit Antwerpen | Device and process set-up for equilibrium reactions |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3665677A (en) * | 1968-11-13 | 1972-05-30 | Siemens Ag | Method and device for absorbing gases or components of gas mixtures |
EP0326718B1 (de) * | 1988-02-05 | 1991-12-11 | Process Engineering Consultants Pec B.V. | Verfahren zur Herstellung von Methanol |
GB8927266D0 (en) * | 1989-12-01 | 1990-01-31 | Csir | Production of methanol |
DE102004028200B3 (de) * | 2004-05-28 | 2005-12-15 | Hippweb E.K. | Verfahren zur Durchführung heterogen katalytischer exothermer Gasphasenreaktionen für die Methanolsynthese |
GB0413400D0 (en) * | 2004-06-16 | 2004-07-21 | Accentus Plc | Catalytic plant and process |
US20100324157A1 (en) * | 2006-12-29 | 2010-12-23 | Bauman Richard F | High throughput fischer-tropsch catalytic process development method |
DE102011017300A1 (de) * | 2011-04-15 | 2012-10-18 | Lurgi Gmbh | Verfahren und Anlage zur Herstellung vom Methanol aus inertenreichem Synthesegas |
DE102015202680A1 (de) * | 2015-02-13 | 2016-08-18 | Friedrich-Alexander-Universität Erlangen-Nürnberg | Verfahren zur Durchführung einer chemischen Synthese und Synthesereaktor |
ES2637949B1 (es) * | 2016-04-15 | 2018-07-27 | Blueplasma Power, S.L. | Procedimiento para la produccion de un producto multifuncional, dispositivo para aplicar dicho procedimiento y producto obtenido con dicho procedimiento. |
DE102016210224A1 (de) | 2016-06-09 | 2017-12-14 | Friedrich-Alexander-Universität Erlangen-Nürnberg | Reaktor und Verfahren zur Umsetzung von gleichgewichtslimitierten Reaktionen |
EP3401299B1 (de) * | 2017-05-12 | 2021-11-03 | L'air Liquide, Société Anonyme Pour L'Étude Et L'exploitation Des Procédés Georges Claude | Reaktor zum durchführen exothermer gleichgewichtsreaktionen |
EP3603790A1 (de) * | 2018-08-02 | 2020-02-05 | Nederlandse Organisatie voor toegepast- natuurwetenschappelijk Onderzoek TNO | Verbesserte produktivität von gleichgewichtsbeschränkten reaktionen |
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2019
- 2019-01-30 DE DE102019201172.1A patent/DE102019201172A1/de not_active Withdrawn
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2020
- 2020-01-28 US US17/424,339 patent/US20220111346A1/en not_active Abandoned
- 2020-01-28 WO PCT/EP2020/052002 patent/WO2020157042A1/de unknown
- 2020-01-28 EP EP20704417.3A patent/EP3894062A1/de not_active Withdrawn
- 2020-01-28 CN CN202080012007.9A patent/CN113365724A/zh active Pending
Also Published As
Publication number | Publication date |
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WO2020157042A1 (de) | 2020-08-06 |
US20220111346A1 (en) | 2022-04-14 |
CN113365724A (zh) | 2021-09-07 |
DE102019201172A1 (de) | 2020-07-30 |
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