JPS6193817A - Gas separation apparatus - Google Patents

Abstract

PURPOSE:To obtain a separation apparatus capable of obtaining a large amount of separated conc. gas in low cost, by using one or more of a unit constituted of a gaseous mixture supply chamber frame, a gas permselective membrane, a selected gas transmitting frame and a gas permselective membrane. CONSTITUTION:Gas permselective membranes 6, 12 are held between a gaseous mixture supply chamber frame 1 provided with plural gaseous mixture intake ports 2 and plural gaseous mixture outlets 4 provided to the side opposite to said ports 2 and a selected gas transmitting chamber frame 8 having a gas inflow part 10 for flowing transmitted gas into notch parts 9 to form a unit and a plurality of units are laminated and clamped to clamping frames 14, 15 by a filter press mold. Gas is flowed in the supply chamber frame 1 from the gas intake parts and issued from the outlets 4 and, during this time, the gas transmits through the gas permselective membrane 6 to be conc. and separated to the transmitting chamber frame 8 while the conc. separated gas is taken out from a takeout port 16 through notch parts 9, 7, 5.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a gas separation device, and particularly to a device that selectively concentrates and separates oxygen from air using an oxygen enrichment membrane.

(Prior Art) Various methods have been proposed for separating species gases from a gas mixture into molecules a and cliil using gas selective permeation membranes.

Some of them are also put into practical use.

For example, using an oxygen enrichment membrane to extract only oxygen from the air for 5e
1ii is a typical example.

When selectively separating a species gas from a gas mixture,
There are two directions. One is the method of pressurizing the mixed gas flowing on the front side of the gas selective permeation membrane to concentrate it by the atmospheric pressure. An example is the case where carbon dioxide gas in natural gas is separated and concentrated in secondary recovery of crude oil. The other method is to compress the gas by reducing the pressure on the back side of the gas selective permeation membrane. An example of this is the case where .

(Problems that the entire town is trying to solve) Conventionally, various devices of this kind, typified by spiral or hollow devices, have been proposed.

Most of these are effective in the former case, and no low-cost and simple device suitable for the latter, ie, obtaining combustion air for industrial ITJ furnaces, has yet been proposed.

(Means for Solving the Problems) In view of the above problems, the present invention aims to find a gas separation device that is low cost and has a simple structure and can obtain a large amount of minute gi of concentrated gas per unit time. As a result of various studies, it has been found that the above object can be achieved by using a filter press type device having a specific structure.

Thus, the present invention provides a gas mixture supply chamber frame/gas selective permeation WA/i2! Selective gas transparent frame/gas selective transparent frame 1
It consists of one or more units composed of membranes, and has an intake inlet and an outlet for the mixed gas on the sides of the mixed gas supply chamber frame, and a 9 inlet and an outlet on the inner peripheral edge of the chamber frame.
A notch is provided at the inner periphery of the selected gas permeation chamber frame, and the notch has a waste inlet for ai waste to flow in. It is an object of the present invention to provide a filter press type gas separation device configured to take out permeated gas to the outside by making a notch portion of a chamber frame communicate with each other.

The present invention will be explained below using the accompanying drawings.

FIG. 1 is an illustration of a gas separation device according to an example of the present invention.
1 is a frame-shaped mixed gas supply chamber frame, and a plurality of mixed gas intake ports 2 are provided on the side thereof. A plurality of gas outlets 4 are provided on the opposite side of the net-shaped spacer 3, and the mixed gas taken in from the inlet 2 passes between the net-shaped spacers 3 and crosses the chamber frame. There is no particular restriction on the shape of the inlet 2 and outlet 4 that exit from the outlet 4, and any suitable through hole or slit may be used as appropriate, but it is preferable from the viewpoint of power saving to avoid pressure loss as much as possible. or,
There are no particular restrictions on the opening or shape of the net-like spacer, but for the same reason as above, it is preferable to minimize pressure loss. This is a notch, and it can be provided either at the top or at the bottom, if desired. There are no particular restrictions on this shape, but it is desirable to have as little pressure loss as possible. 6 is a gas selective permeation Jli
And the notch provided in the above-mentioned notch and the frame of the selective gas permeation chamber which will be described later! ! A cutout portion 7 is provided so as to communicate with the portion. 8 is a frame-shaped selection room frame;
Notches 9 are provided at the top and bottom of the chamber frame in the same way as described above, and net-like spacers 11 are provided which serve as gas inlets for the inflow of permeated gas.

Although there are no particular restrictions on the shape of the inlet IO, it is desirable to minimize pressure loss, and
There is no particular restriction on the shape of the net-like spacer, but it is desirable that the pressure drop is as small as possible and that the gas selective permeation member is small in deformation during depressurization to prevent performance deterioration. It is the same as 26.

Hereinafter, this configuration will be assumed to be one unit; however, in FIG. 15 to stack it in a filter press mold. still,
It is also possible to attach the permeate gas outlet 16 to the constriction frame 15 and take out the permeate gas from both sides of 14.15.

When stacking these, the entire thread of the through-bolts is attached with V6 like in various filter press devices. A suitable backing may also be interposed between the chamber frame and the membrane.

In the present invention, although the unit y) described above is one in FIG. 1, a plurality of such units can be stacked.

In this way, the mixed gas is introduced into the supply chamber frame from the intake port 2 of the mixed gas and exits from the outlet 4, during which the constituents of the gas pass through the gas selective membrane II!S membrane 6. The selected gas is concentrated and separated into the permeation chamber frame through the notches 9 and 7.5, respectively, and then the permeated gas is taken out through the permeation port 16.
taken from.

FIG. 2 shows an example of such a device, in which a gas supply box 22 equipped with a mixed gas supply fan 21 is attached to the side of the assembled module as shown by the arrow, and the permeate gas outlet 14 is attached to the side of the assembled module. By attaching a vacuum pump 23 to the unit, the selected gas can be efficiently obtained.

Note that, if desired, by applying a suitable sealant such as silicone around the module, it is possible to prevent gas, particularly selectively permeated gas, from leaking to the outside.

FIG. 3 is for illustrating an example of such a device.

This is a view of the module seen from the side, with I
I! 26 and the size of the transmission chamber frame 8 are made somewhat smaller, and the sealant 31 is applied in such a manner as to fill up the area accordingly.

The device of the present invention is capable of clii separation of oxygen from the air.

It can be used to separate and recover methane from a methane gas mixture, and to separate component gases from various other gas mixtures.

The apparatus of the present invention has the advantage that it is extremely easy to replace the separation membrane, and that a desired number of modules can be easily stacked to form a large-capacity apparatus.

[Brief explanation of drawings]

4 FIG. 1 is an exploded explanatory diagram of a gas separation device according to an example of the present invention. FIG. 2 shows the gas content #, according to the example of the present invention. An assembly diagram of the I device. FIG. 3 is a module configuration diagram of a gas separation device according to an example of the present invention. 1: Mixed gas supply chamber frame, 2: Mixed gas intake, 4: Mixed gas outlet. 6: Gas selective permeation membrane, 8: i2! Selective gas permeation chamber frame, 5, 7, 9: Notch part for taking out permeated gas No. 1-♀ 2 Kokuki 3 times

Claims (1)

[Claims] 1. Consisting of one or more units consisting of a mixed gas supply chamber frame/a gas selectively permeable membrane/a selective gas permeable chamber frame/a gas selectively permeable membrane; In addition to providing an inlet and an outlet for the mixed gas on the side, a notch is provided at the inner peripheral edge of the base frame, and a notch is provided at the inner peripheral edge of the selected gas permeation chamber frame, and the notch is provided at the inner peripheral edge of the base frame. A filter press type gas separation device configured such that the notch has a gas inlet for the permeated gas to flow in, and the notched portions of both chamber frames are communicated to take out the permeated gas to the outside.