Mitsubishi Rayon Company, Limited

Mitsubishi Rayon Engineering Co., Ltd.

Hiroshi Tasaka

Ken Ooyachi

Hiroki Sakakibara

Masaaki Satou

Satoshi Suzuki

Masanori Itakura

Kenji Watari

Katsuya Sanai

Satoshi Takeda

Yoshihito Nakahara

Masamoto Uenishi

Osami Kato

Kenji Niikawa

Masaru Ide

A carbonate spring producing system includes a gas-liquid separator which is connected on the downstream side of a carbonic acid gas dissolver which connects to a carbonic acid gas supply means and hot water supply. A liquid lead-out pipe is connected to the gas-liquid separator. Preferably an un-dissolved carbonic acid gas lead-out pipe is connected on the upstream sides of the gas-liquid separator and the carbonic acid gas dissolver. The un-dissolved carbonic acid gas lead-out pipe includes a control valve, a compressor, and a liquid level detection means. The control valve controls a flow rate of un-dissolved carbonic acid gas from the gas-liquid separator. An amount of un-dissolved carbonic acid gas in the gas-liquid separator is monitored, so that the un-dissolved carbonic acid gas in the hot water can be separated and removed by the gas-liquid separator. The separated and removed un-dissolved carbonic acid gas can be re-dissolved.

Carbonate spring producing system

Hot water is pumped by a suction pump and introduced into a carbon dioxide (CO) gas dissolver through solution flow rate adjusting means and then poured into a bath. The COis introduced into the COgas dissolver through gas flow rate adjusting means, and the quantity of bubbles in an artificial carbonated spring in a take-out pipe is measured. The solution and gas flow rate adjusting means are controlled via a control device using a relationship expression between a preliminarily set quantity of bubbles and carbon dioxide concentration to obtain a desired concentration of carbon dioxide gas in the carbonated spring. Since the carbon dioxide gas flow control means is provided between the carbon dioxide gas dissolver and a carbon dioxide gas supply source, a high concentration carbonated spring can always be manufactured, even if the pressure of supplied carbon dioxide gas changes or membrane permeation changes.

Device and method for manufacturing carbonated spring and carbonic water, control method for gas density applied thereto and membrane module

A process for producing carbonated water having a high concentration, inexpensively and easily, involves using a static mixer having 20 to 100 elements so as to provide a value Re&#xd7;N of 100,000 to 2,000,000, in with Re represents a Reynolds number, when a mixture of water and carbonic acid gas flow in the static mixer.

Equipment and process for the production of carbonated water

This invention concerns an apparatus and a method for producing carbonated water capable of obtaining high concentration carbonated water effectively. Carbon dioxide gas is passed through a first carbon dioxide gas dissolver composed of a membrane module to be dissolved in water and the carbonated water passing through the first carbon dioxide gas dissolver is passed through a static mixer, which is a second carbon dioxide gas dissolver. Consequently, a high concentration carbonated water can be obtained remarkably, effectively and easily with a simpler structure than conventionally.

Apparatus for producing carbonated water and method for producing carbonated water using the same

This invention concerns an apparatus and a method for producing carbonated water capable of obtaining high concentration carbonated water effectively. Carbon dioxide gas is passed through a first carbon dioxide gas dissolver () composed of a membrane module to be dissolved in water and the carbonated water passing through the first carbon dioxide gas dissolver () is passed through a static mixer (), which is a second carbon dioxide gas dissolver. Consequently, a high concentration carbonated water can be obtained remarkably, effectively and easily with a simpler structure than conventionally.

Hot water () in a bath () is pumped up by a suction pump () and introduced into a carbon dioxide gas dissolver () through solution flow rate adjusting means () and then, poured into the bath (). Carbon dioxide gas supplied from a carbon dioxide gas cylinder () is introduced into the carbon dioxide gas dissolver () through gas flow rate adjusting means (). At this time, the quantity of bubbles existing in artificial carbonated spring in a take-out pipe () is measured with a measuring device (), and the solution flow rate adjusting means (), gas flow rate adjusting means () and the like are controlled by means of a control device () using a relational expression between a preliminarily set quantity of bubbles and carbon dioxide concentration to obtain a desired concentration of carbon dioxide gas in carbonated spring. Because the carbon dioxide gas flow control means () is provided between the carbon dioxide gas dissolver () and a carbon dioxide gas supply source, carbonated spring of a high concentration can be always manufactured even if the pressure of supplied carbon dioxide gas changes or the permeating performance of a membrane changes.

An object of the present invention is to provide a production apparatus for a hollow fiber membrane module without a risk of deteriorating characteristics of the hollow fiber membranes to be used, with the module case and the hollow fiber membranes bonded and fixed with a potting resin in a highly fluid-tight or airtight manner, and a production method thereof. A centrifugal type production apparatus () for the hollow fiber membrane module, for bonding and fixing at least one end part of the hollow fiber membrane stored in the module case and the module case with each other with the potting resin by utilizing a centrifugal force. The centrifugal force is applied by driving a centrifugal machine () while supporting an end part potting working part () of the hollow fiber membrane module () by a fixing jig (). The fixing jig () comprising a heating means () and a temperature detecting means () controlling a heating capacity of the heating means () based on a difference between a temperature of the fixing jig () detected by the temperature detecting means () and a setting temperature of the fixing jig () preliminarily set in a temperature accuracy range of &#xb1;4&#xb0; C. to the setting temperature. It is also possible to reduce a pressure of the potting working part () with a pressure reducing mechanism () simultaneously with the centrifugal force application for further preventing generation of leakage of the potting resin.

Apparatus for production of hollow fiber membrane module and method of production

Device and method for manufacturing carbonated spring and carbonic water, control method for gas density applied thereto, and membrane module

A hollow fiber membrane module and potting material can be used for chemical deaeration in a semiconductor production process, in printers, in a liquid crystal sealing process or in a chemical production process. A hollow fiber membrane module includes, as potting material , an epoxy resin cured product in which the weight change per unit surface area of a potting material test piece after immersing the test piece in a chemical for 6 months at room temperature is within the range of &minus;20 to &plus;20 mg/cm , and as housing , a polyolefin in which the weight change per unit surface area of a test piece after immersing the test piece in a chemical for 6 months at room temperature is within the range of &minus;20 to &plus;20 mg/cm , and the total metal content is 300 ppm or less. The module has a long service life when used for chemical treatment without leakage.

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Aichi, Japan

Hiroshi Tasaka