JPH051291Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a module for separating liquid mixtures. More specifically, in a module for liquid mixture separation that has a fluid inlet/outlet and a built-in hollow fiber bundle, a hollow fiber support for regularly arranging a small bundle of 1 to 50 hollow fibers inside the module is used. The present invention relates to a module for separating liquid mixtures in which a body is provided and hollow fibers are regularly arranged.

[Prior art] A mixed liquid is supplied to the primary side (feed side) across a separation membrane, and the pressure is reduced on the secondary side (permeate side), or
In 1950, the so-called pervaporation separation method, in which the substance to be separated is permeated in gaseous form by flowing a carrier gas, was introduced.
It has been researched since 2000. The pervaporation separation method is considered to be suitable for separating azeotropic mixtures and mixtures with small boiling point differences that are impossible or difficult to separate by normal distillation, but it has not yet been widely used industrially. . This is mainly due to the fact that the membrane permeability, that is, the separation coefficient and membrane permeation rate, are not large. Various studies have been made to increase the permeability of these membranes (for example, JP-A-62-186907;
No. 62-210008, No. 62-250906, No. 63-7803, 63-
12304, 63-28409, 63-44904, etc.).

[Problems to be solved by the invention] However, in order to utilize the pervaporation separation method industrially, it is insufficient to simply consider improving the membrane itself. That is, even if pervaporative separation is carried out using a separation membrane with excellent membrane performance, pervaporative separation cannot be carried out efficiently depending on the flow state inside the module.

In order to utilize the pervaporation separation method industrially, it is important to consider improving the module itself in addition to improving the membrane itself, but despite this importance being pointed out, In the pervaporation separation method, there are almost no examples in which the module itself has been studied from this point of view. Therefore, an object of the present invention is to provide a module for separating liquid mixtures with high separation efficiency.

[Means for Solving the Problems] In order to solve the above problems, the present inventor studied a module for separating liquid mixtures, and arrived at the present invention. That is, the present invention has a fluid inlet/outlet,
A module for separating liquid mixtures having a built-in hollow fiber bundle, characterized in that a hollow fiber support is provided inside the module to regularly arrange small bundles of hollow fibers each consisting of 1 to 50 hollow fibers. It is a module for.

The present invention will be described below with reference to the drawings. FIG. 1 is a schematic diagram showing an example of the present invention, in which 1 is an inlet of a fluid to be treated, 2 and 9 are membrane permeable fluid outlets, 3 is a membrane non-permeable fluid outlet, 4 is a hollow fiber bundle, and 5 is a hollow fiber support. body,
6 is a bundle sheet, 7 is a support member, and 8 is a fixing flange. 2 and 9 are usually connected to a vacuum line through a cooler.

The hollow fibers constituting the hollow fiber bundle built into the module for separating liquid mixtures of the present invention are made of commonly used materials such as cellulose, cellulose acetate, polyvinyl alcohol, polyacrylonitrile, polysulfone, and polypropylene. Hollow fibers are used. The open end of the hollow fiber bundle is made of epoxy resin, unsaturated epoxy resin,
It is supported by a support member made of a potting material such as urethane resin or silicone resin, and is housed within the module.

In order to fix the hollow fiber bundle inside the module, it is sufficient to form the hollow fiber bundle using the potting material as described above and fix it to the bundle sheet using a flange with a fixing device such as a bolt or nut, for example, as shown in the drawing. . The open end of the hollow fiber bundle may be open at one end or may be open at both ends.

In the present invention, it is important to provide a hollow fiber support inside the module for regularly arranging small bundles of hollow fibers consisting of 1 to 50 hollow fibers. Although there are no particular restrictions on the manner in which the hollow fiber support is installed, it is preferable to install it in a direction perpendicular to the hollow fiber bundle, that is, approximately perpendicular to the hollow fibers. Further, the spacing between the hollow fiber supports can be changed as appropriate depending on the processing speed of the fluid to be processed and the properties of the hollow fibers. There are no particular limitations on the thickness of the hollow fiber support, as long as it can withstand mechanical strength.

The materials for the module and the hollow fiber support may be appropriately selected from materials that are not attacked by the fluid to be treated.

In the present invention, by providing a hollow fiber support inside the module, the hollow fiber bundle is divided into small bundles consisting of 1 to 50 hollow fibers, and these small bundles are further divided into 1
They can be arranged regularly at intervals of ~30mm. In addition to the method of arranging the upper bundle sheet almost linearly between the lower bundle sheets, hollow fibers can be
It can be stored and arranged in a U-shape or loop-shape.

The pervaporation module of the present invention has a hollow fiber support for regularly arranging small bundles of hollow fibers consisting of 1 to 50 hollow fibers inside the module. Although it is possible to perform pervaporative separation very efficiently by improving fluid exchange between the gaps, it is desirable from the viewpoint of thermal efficiency to further provide appropriate heat exchange means inside and/or outside.

The fluid to be treated is often an aqueous organic liquid solution, but organic liquid mixtures and liquid mixtures of a plurality of these can also be treated. In addition, it may be treated not only in liquid form but also in vapor form.

In order to separate a liquid mixture using the module of the present invention, it is sufficient to supply the fluid to be treated to the module and maintain the membrane-permeating fluid side at a predetermined pressure using a vacuum pump or the like.

[Effect of the invention] With this invention, 1 to 50 hollow fibers are installed inside the module.
It is possible to provide a module for separating liquid mixtures having a hollow fiber support for regularly arranging hollow fiber bundles of books. When a liquid mixture is separated by pervaporation separation using such a module, the fluid flow is disturbed and the exchange of liquid between the hollow fibers is improved, making it possible to efficiently separate the liquid mixture. , has great industrial utility.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing an example of a module for separating liquid mixtures according to the present invention. DESCRIPTION OF SYMBOLS 1... Fluid to be treated inlet, 2, 9... Membrane permeable fluid outlet, 3... Membrane non-permeable fluid outlet, 4... Hollow fiber bundle, 5... Hollow fiber support, 6... Bundle sheet, 7... ...Supporting member, 8...Fixing flange.

Claims (1)

[Scope of utility model registration request] In a module for liquid mixture separation having a liquid inlet/outlet and a built-in hollow fiber bundle, a hollow fiber support is provided inside the module for regularly arranging a small bundle of hollow fibers consisting of 1 to 50 hollow fibers. A module for separating liquid mixtures.