JPH01245807A - Fluid separation tube - Google Patents

Abstract

PURPOSE:To easily carry out rolling up a reinforcing material to form a FRP layer utilizing the film envelope rolling process by extending the length of a sheet material for a permeating side passageway and impregnating the extended part of the sheet with a resin to form a pressure-resistant FRP layer. CONSTITUTION:One end of a sheet support 1 for permeating side passageway made of a plastic woven cloth, etc., is bound to a permeating side passageway tube having pores, a part 1a from the end to the mid of the sheet support 1 is sandwiched with films 3 and sealed with a sealing resin 4 to form a envelope 3. Being attached to a sheet support for a raw liquid passing, the part 1a from the end to the mid of the sheet support 1 with the envelope 30 is rolled up, and a part 1b from the mid to the other end of the sheet support 1 is rolled up while impregnated with a curable resin. The end terminal is temporarily sealed with a contacting material curable at high speed so as to fix the rolled body until the impregnated resin is cured. Thus, another process of rolling up a fiber material to form a FRP layer is not needed.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an improvement of a fluid separation tube used for separating liquids, gases, etc.

<Prior Art> When a fluid is separated using a selective permeation membrane, for example, when a stock solution is separated using an ultrafiltration membrane, a reverse osmosis membrane, a precision filtration membrane, etc., a spiral membrane module is sometimes used.

FIG. 7A and FIG. 7B (BB sectional view in FIG. 7A) show an example of a conventional spiral membrane module,
Place the sheet base material l' for the permeate passage within the 30° membrane envelope,
The opening of the membrane envelope 30' is communicated with the permeated liquid collection pipe 2', the membrane envelope 30' is wrapped around the water collection pipe 2' together with the sheet base material for the stock solution passage at 5 degrees, and the wrapped body B' is A pressure-resistant layer A' of FRP is formed thereon.

In FIG. 7B, C' indicates the stock solution that is pumped to one end of the membrane module, and it is circulated through the stock solution passage in the axial direction of the wound body B', and during this circulation, the solvent in the stock solution spreads through the membrane. The permeate passes through the envelope, passes through the permeate passage inside the envelope, and reaches the permeate collection pipe 2°.On the other hand, the stock solution concentrated by solvent separation, that is, the concentrate, flows out from the other end of the module. go.

In the above-mentioned spiral module, the pressure-resistant layer A' is in close contact with the wound body B°;

(If the flow resistance of the stock solution is low between the pressure layer and the wrapped body, most of the stock solution will pass through this gap.) It has the advantage of being able to eliminate breeding and, ultimately, the generation of slime.

<Problem to be Solved> However, in order to form F RPJiA', it is necessary to wrap the reinforcing fiber material, which inevitably complicates the process.

The purpose of the present invention is to fabricate FRPj by using the membrane envelope wrapping process.
An object of the present invention is to provide a spiral membrane module in which reinforcing material can be easily wrapped to form an i.

<Means for Solving the Problems> The fluid separation tube according to the present invention sandwiches a portion from one end to the middle of a sheet base material for a permeate side passage between membranes, seals the membranes together in an envelope shape, and forms the envelope body. communicates the opening with the passage pipe on the permeate side, wraps the sheet base material and the envelope body together with the sheet base material for the concentrate passage around the passage pipe, and forms a wrapping layer of the portion of the sheet base material from the middle to the other end. This structure is characterized by being impregnated with resin.

<Explanation of Examples> The present invention will be explained below with reference to the drawings.

FIG. 1A shows the fluid separation tube according to the present invention in an expanded state, and FIG. 1B is a sectional view taken along line BB in FIG. 1A.

In FIGS. 1A and 1B, reference numeral 1 indicates a sheet base material for the transmission side passage, and for example, a plastic woven fabric or a plastic net (preferably a tricontact fabric made of polyester resin) can be used.

2 is a passage pipe on the permeate side, and a perforated pipe can be used. One end of the sheet base material for the permeate side passage is bound to the permeate side passage pipe. 3.3 is a membrane (any of ultrafiltration membranes, reverse osmosis membranes, and precision filtration membranes can be used) that sandwiches the portion 1a from one end of the sheet base material l to the middle, and is made of a sealing resin (epoxy resin, urethane resin, etc.). The envelope body 30 is sealed with palms clasped together using resin) 4. 1b indicates a portion from the middle of the sheet base material to the other end, and is a portion impregnated with resin.

FIG. 2 is a sectional view showing a fluid separation tube according to the present invention,
The part 1a up to the middle of the sheet base material is attached together with the membrane envelope 30 (one side of the membrane envelope is attached with a sheet base material 5 for the concentrate passage, for example, a coarse plastic net).
The subsequent portions 1b are impregnated with a curable resin, for example, an epoxy resin, and then wrapped around each other. The terminal end can be temporarily fixed with a fast-curing adhesive (for example, hot melt resin, indicated by 6 in FIG. 1A) until the impregnated resin is cured.

A shows an airtight layer formed by curing the impregnated resin. As shown in FIG. 3, the opening of the membrane envelope 30 communicates with the passage tube 2 through a hole 21 (4 is an adhesive).

FIG. 4 shows a membrane module using the separation tube, in which one end of the passage tube 2 of the separation tube is sealed with a stopper 7, the other end of the passage tube 2 is made to protrude, and two headers 8a+
8b (for example, made of vinyl chloride or stainless steel) is attached with adhesive. These headers have a central mouth pipe 81 and a sidero pipe 82, the central mouth pipe 81 of one header 8a is used as the stock solution inlet, and the sidero pipe 82 is
It can be used as an air vent. other header 8
A protruding channel pipe is watertightly inserted into the central opening pipe 81 of b through an O-ring 9 or an adhesive and used as a permeate outlet, and the side drain pipe 82 can be used as a concentrate outlet. These hollow-mouthed pipes and side-rotated pipes are usually provided with tapered female threads so that they can be joined with threaded joints, but they may also be joined with sanitary seals, union joints, or victric joints.

In Fig. 4, C indicates the stock solution being pumped into the module, and the stock solution passage (formed by the stock solution passage sheet rolled up with the membrane envelope) in the separation tube is axially moved from the stock solution port 81 of the header 8a. During this flow, the solvent in the stock solution permeates into the membrane envelope, and this permeate passes through the sheet base material for the permeate passage inside the membrane envelope and flows into the flow path tube 2 (.

Air in the stock solution can be removed from the side draw pipe 82 of the header 8a to avoid air bubbles from adhering to the membrane, and the membrane area can be used effectively. The stock solution concentrated by the separation of the solvent flows out from the side drain pipe 82 of the header 8b.

In the above, the resin-impregnated portion 1b of the base material sheet 1 for the transmission side passage may be impregnated with resin after adding a reinforcing fiber base material, for example, a glass fiber woven fabric, as shown at 10b in FIG. . In this case, the FRPll of the separation tube is made by impregnating and hardening a composite fiber layer of a base material sheet for the permeate side passage and a reinforcing fiber base material with a resin, and has particularly excellent pressure resistance.
If a stainless steel ladder is used for the belly button, it is possible to achieve a pressure breaking strength of 100 krf/-.

Further, as shown in FIG. 6, the sheet base material for the permeation side passage is made of a bilayer, for example, biplane 1.1, and a membrane envelope 30.30 is attached to each sheet base material 1, 1 and impregnated with resin. , these sheet substrates can also be wrapped around the permeate passage tube.

It is also possible to use a gas-selective permeable membrane, for example, an oxygen-enriched separation membrane, as the membrane in the separation tube for gas separation treatment.

<Effects of the Invention> The fluid separation tube according to the present invention has the configuration as described above, and in the spiral type separation tube, the length of the sheet base material for the permeate side passage is increased and the increased sheet portion is impregnated with resin. Since the pressure-resistant FRP layer is formed by wrapping the fiber material in the FRP layer, the wrapping process for the sheet for the permeate side passage during the manufacture of the spiral separation tube can be used, and a separate wrapping process is not required. I don't. In addition, the denseness of the sheet base material for the permeation side passage allows the resin to be held well, and the blockage of the stock solution passage due to dripping of the resin can be effectively prevented. Therefore, according to the present invention, it is possible to provide a spiral membrane separation tube having an FRP layer that is easy to manufacture.

[Brief explanation of the drawing]

FIG. 1A is an explanatory diagram showing an expanded state of the fluid separation tube according to the present invention, FIG. 1B is a sectional view taken along line BB in FIG. 1A,
FIG. 2 is a cross-sectional view showing a fluid separation tube according to the present invention, and FIG.
The figures are an explanatory diagram showing the area within the dotted line frame in Fig. 2, Fig. 4 is an explanatory diagram showing a membrane module using the separation tube of the present invention, and Fig. 5 is an explanatory diagram showing the inside of the dotted line frame in Fig. 2.
FIG. 6 is an explanatory diagram showing another embodiment of the present invention in an expanded state; FIG. 7A is an explanatory diagram showing a conventional example; FIG. 7B is a sectional view taken along line BB in FIG. In the figure, 1 is the sheet base material for the permeation side passage, la, lb
2 is each part of the sheet base material, 2 is a permeation side passage pipe, 3.3 is a membrane, 30 is a membrane envelope, and A is a resin-impregnated wrapping layer. 10〆γ5m T'7mA 77mB

Claims (1)

[Claims] The part of the sheet base material for the permeate side passage from one end to the middle is sandwiched between membranes, the membranes are sealed together in an envelope shape, the opening of the envelope body is communicated with the permeate side passage pipe, and the above sheet is inserted into the passage pipe. 1. A fluid separation tube characterized in that a base material and an envelope are wound together with a sheet base material for an undiluted solution passage, and a winding layer in a portion of the sheet base material from the middle to the other end is impregnated with a resin.