Device and Process for Substance Separation in a Microstructured Apparatus
The invention relates to a device for separation of substance mixtures on the micro scale. The invention further relates to a process for separating substance mixtures using the inventive device. The device is a device for separating substance mixtures and for performing chemical reactions between immiscible fluid media on the micro scale, comprising a first channel plate with at least one first process channel for a first fluid medium, an inlet and an outlet, and a connecting or distributing channel in each case, which connects the inlet to the first process channel, and a further connecting or distributing channel which connects the first process channel to the outlet, a second channel plate with at least one second process channel for a second fluid medium immiscible with the first, an inlet and an outlet, and a connecting or distributing channel in each case, which connects the inlet to the second process channel, and a further connecting or distributing channel which connects the second process channel to the outlet, and a microscreen as a separating means between the two process channel, wherein the microscreen has a multitude of orifices which have an aspect ratio of 1.5 to 10.
1 . A device for separating substance mixtures and for carrying out chemical reactions between immiscible fluid media on the microscale comprising a first channel plate having at least one first process channel for a first fluid medium,
an inlet and an outlet and a connecting channel or distributing channel that connects the inlet to the at least first process channel and having a further connecting channel or distributing channel that connects the first process channel to the outlet,
a second channel plate having at least one second process channel for a second fluid medium that is immiscible with the first fluid medium, an inlet and an outlet and also a connecting channel or distributing channel that connects the inlet to the second process channel and having a further connecting channel or distributing channel that connects the second process channel to the outlet, and a microscreen as separation means between the two process channels, wherein the microscreen contains a plurality of openings that have an aspect ratio of 1.5 to 10.
2 . The device as claimed in claim 1 , wherein the openings of the microscreen are of approximately equal size and are distributed substantially regularly on the microscreen.
3 . The device as claimed in claim 1 , wherein the openings have a diameter of the microscreen is 0.2 to 5 μm.
4 . The device as claimed in claim 2 , wherein the microscreen has thickness of 0.5 to 10 μm.
5 . The device as claimed in claim 2 , wherein the porosity of the microscreen is between 10% and 70%.
6 . The device as claimed in claim 2 , wherein the microscreen has a coated surface.
7 . The device as claimed in claim 1 , wherein the process channels for at least one of the two fluids are formed by openings in a spacer film that is introduced between the microscreen and the respective channel plate.
8 . The device as claimed in claim 1 , wherein the device is additionally fitted with means for introducing or discharging heat.
9 . An apparatus comprising at least two devices as claimed in claim 1 , wherein the devices are interconnected with one another.
10 . A method for using the device as claimed in claim 1 , for carrying out chemical reactions between immiscible fluids or for separating two fluids, the method comprising
providing a first channel plate having at least one first process channel for a first fluid medium,
providing an inlet and an outlet and a connecting channel or distributing channel that connects an inlet to the at least first process channel and having a further connecting channel or distributing channel that connects the first process channel to the outlet,
a second channel plate having at least one second process channel for a second fluid medium that is immiscible with the first fluid medium, an inlet and an outlet and also a connecting channel or distributing channel that connects the inlet to the second process channel and having a further connecting channel or distributing channel that connects the second process channel to the outlet, and a microscreen as separation means between the two process channels, wherein the microscreen contains a plurality of openings that have an aspect ratio of 1.5 to 10.