EP-4735148-A1 - DEVICE AND METHOD FOR SEPARATING MIXTURE COMPONENTS OF A WATER VAPOR-GAS MIXTURE BY MEANS OF A JET PUMP, METHOD AND CONTROLLER FOR OPERATING A DEVICE OF THIS TYPE

EP4735148A1EP 4735148 A1EP4735148 A1EP 4735148A1EP-4735148-A1

Abstract

The invention relates to a device (200) for separating mixture components of a water vapor-gas mixture. The device (200) comprises a jet pump (220) having a pump-fluid connection (222) for introducing a pump fluid (205), a suction-fluid connection (224) for introducing the water vapor-gas mixture as suction fluid (215), and an output connection (226) for outputting an output mixture (225) comprising the pump fluid (205) and the suction fluid (215). One gas component of the water vapor-gas mixture comprises carbon dioxide. The jet pump (220) is designed to output the output mixture (225) as a two-phase output mixture by cooling the water vapor to the condensation temperature thereof. The device (200) also comprises a water separator (230) which can be connected or is connected to the output connection (226) of the jet pump (220). The water separator (230) is designed to separate the liquid phase (233) from the gas phase (235) of the output mixture (225) in order to provide both phases (233, 235) separately from one another.

Inventors

PINTO, VALERIO
SERAFINI, Fabio
FIORENTINO, LUIGI
VOLPE, Valentino
STUKE, BERND
DIAFERIA, ANTONIO
BAUER, HARALD
SCOTTO DI SANTOLO, PIETRO

Assignees

Robert Bosch GmbH

Dates

Publication Date: 20260506
Application Date: 20240506

Claims (1)

claims 1. Device (200) for separating mixture components of a water vapor-gas mixture, the device (200) having the following features: a jet pump (220) with a driving fluid connection (222) for admitting a driving fluid (205), a suction fluid connection (224) for admitting the water vapor-gas mixture as suction fluid (215) and an output connection (226) for outputting a starting mixture (225) comprising the driving fluid (205) and the suction fluid (215), wherein a gas component of the water vapor-gas mixture comprises carbon dioxide, the jet pump (220) being designed to output the starting mixture (225) as a two-phase starting mixture by cooling the water vapor to its condensation temperature; and a water separator (230) which is connectable or connected to the output connection (226) of the jet pump (220), wherein the water separator (230) is designed to separate the liquid phase (233) from the gas phase (235) of the starting mixture (225) in order to provide both phases (233, 235) separately from one another. 2. Device (200) according to claim 1, wherein the device (200) is designed to separate mixture components of the water vapor-carbon dioxide mixture in order to recover carbon dioxide. 3. Device (200) according to one of the preceding claims, wherein the jet pump (220) is designed as a vacuum pump. 4. Device (200) according to one of the preceding claims, with a conveying device (340) which is designed to convey the driving fluid (205) to the driving fluid connection (222) of the jet pump (220). 5. Device (200) according to claim 4, wherein the conveyor device (340) is designed to convey at least a portion of the liquid phase (233) of the starting mixture (225) as the driving fluid (205) to the driving fluid connection (222) of the jet pump (220). 6. Method (400) for separating mixture components of a water vapor-gas mixture, the method (400) comprising the following steps: Generating (420) a starting mixture (225) from a driving fluid (205) and the water vapor-gas mixture as suction fluid (215) by cooling the water vapor to its condensation temperature in order to output the starting mixture (225) as a two-phase starting mixture, wherein the step (420) of generating is carried out using a jet pump (220) having a driving fluid connection (222) for admitting the driving fluid (205), a suction fluid connection (224) for admitting the suction fluid (215) and an output connection (226) for discharging the starting mixture (225), wherein a gas component of the water vapor-gas mixture comprises carbon dioxide; and Separating (430) the liquid phase (233) from the gas phase (235) of the starting mixture (225) using a water separator (230) connected to the output connection (226) of the jet pump (220) in order to provide both phases (233, 235) separately from one another. 7. Method (500) for operating a device (200) according to one of claims 1 to 5, wherein the method (500) comprises the following steps: Causing (550) a supply of the driving fluid (205) and the suction fluid (215) to the jet pump (200); and Causing (560) a discharge of the liquid phase (233) and the gas phase (235) separately from the water separator (230). 8. The method (500) according to claim 7, wherein in the step (550) of effecting the supply, at least one fluid parameter of the driving fluid (205) is adjusted depending on at least one fluid parameter of the suction fluid (215) and/or at least one environmental parameter of an environment of the device (200). 9. Control device (600) which is configured to execute and/or control the steps (550, 560) of the method (500) according to one of claims 7 to 8 in corresponding units (650, 660). 10. Computer program which is configured to execute and/or control the steps (550, 560) of a method (500) according to one of claims 7 to 8. 11. Machine-readable storage medium on which the computer program according to claim 10 is stored.

Description

Description title DEVICE AND METHOD FOR SEPARATING MIXTURE COMPONENTS OF A WATER VAPOR-GAS MIXTURE BY MEANS OF A JET PUMP, METHOD AND CONTROL DEVICE FOR OPERATING SUCH A DEVICE State of the art The invention relates to a device and a method for separating mixture components of a water vapor-gas mixture and to a method and a control device for operating such a device according to the preamble of the independent claims. The subject of the present invention is also a computer program. In order to limit the warming of the earth's atmosphere, there is discussion about actively reducing the CO2 content, which has increased dramatically in recent decades due to industrialization. For this purpose, so-called DAC systems (DAC = Direct Air Capture) or DAC devices can be used, which actively extract carbon dioxide (CO2) from the ambient air, for example via the ventilation system in buildings, so that the CO2 can be stored permanently in another system, for example by injecting it into geological cavities. Various technologies based on natural biological and chemical processes for CCh capture are available or under development and differ in terms of potential, ease of implementation and resulting products. While biological capture processes usually lead to solid products, such as wood, biomass, etc., in which CO2 is bound and which can be used or traded in this form, chemical Separation processes produce gaseous CO2 of varying quality in terms of concentration, purity, etc. and require further treatment. WO 2021/239747 presents an example of a chemical capture system in which CO2 from the air is temporarily bound to an adsorber medium in a first step by pumping with a blower (adsorption), so that in a second step, after sealing the system from the environment, the CO2 can be removed from the adsorber medium and piped into a second system (desorption). Such a system requires a large central stainless steel heat exchanger with a water separator to condense and remove the water vapor from the CO2, the mixture of which is created by the desorption process, in order to ultimately achieve a lower mass flow into a pump and reduce the risk of corrosion. disclosure of the invention Against this background, the approach presented here presents a device for separating mixture components of a water vapor-gas mixture, a method for separating mixture components of a water vapor-gas mixture, a method for operating such a device, a corresponding control device and finally a corresponding computer program according to the main claims. The measures listed in the dependent claims enable advantageous further developments and improvements of the device specified in the independent claim. According to embodiments, a jet pump can be used in particular to extract carbon dioxide from ambient air in order to extract, cool and condense water vapor from a water vapor-gas mixture in DAC applications (DAC = Direct Air Capture). A DAC system or a DAC device can thus be improved in the direction of simplification by using or employing a jet pump that works as a vacuum pump and completely eliminating the presence of a heat exchanger that would conventionally be provided. By eliminating the need for a heat exchanger, system complexity can be reduced and modularity can be improved. In addition, costs can be reduced because stainless steel piping, which would traditionally be necessary due to the corrosiveness of the CCh-water vapor mixture, can be largely or completely dispensed with. A device for separating mixture components of a water vapor-gas mixture is presented, the device having the following features: a jet pump with a driving fluid connection for admitting a driving fluid, a suction fluid connection for admitting the water vapor-gas mixture as suction fluid and an output connection for outputting a starting mixture comprising the driving fluid and the suction fluid, wherein a gas component of the water vapor-gas mixture comprises carbon dioxide, wherein the jet pump is designed to output the starting mixture as a two-phase starting mixture by cooling the water vapor to its condensation temperature; and a water separator which can be connected or is connected to the output connection of the jet pump, wherein the water separator is designed to separate the liquid phase from the gas phase of the starting mixture in order to provide both phases separately from one another. The device can also be referred to as a DAC device or as a DAC system, where DAC stands for Direct Air Capture. The jet pump can be operated using the Venturi effect. The gas component of the water vapor-gas mixture can comprise exclusively carbon dioxide. The starting mixture is generated from the driving fluid and the suction fluid. The liquid phase of the starting mixture can comprise condensed water. The gas phase of the starting mixture can comprise carbon dioxide, in particular exclusively carbon dioxide. The device is designed, shaped and additionally or alternatively