Nippon Sanso Corporation

Taiyo Nippon Sanso Corporation

Shinichi Marumo

Akihiro Nakamura

Masato Kawai

Takushi Ohsaki

Masayoshi Hayashida

Akira Wakaizumi

Toshiya Miyagawa

Mitsuo Kigure

Yoshinori Watanabe

Tadao Adachi

An adsorbent for separating nitrogen from a mixed gas of oxygen and nitrogen is MSC wherein an oxygen and nitrogen separation ratio &#x3b1; and a ratio (t/t) of a time trequired for adsorbing 50% of the oxygen equilibrium adsorption amount and a time trequired for adsorbing 95% of the oxygen equilibrium adsorption amount satisfy the inequality()&#x3c;&#xd7;(&#x3b1;&#x2212;)&#x3b1;&#x2267;The amount of adsorbent used with respect to a predetermined amount of nitrogen generated can be reduced since a method is carried out which uses this adsorbent to produce nitrogen by separating nitrogen from the mixed gas of oxygen and nitrogen by means of a PSA method. By this method, it is possible to reduce the cost of the apparatus and reduce and miniaturize the scale of the apparatus, and the power consumption amount can be reduced.

Adsorbent for separating nitrogen from mixed gas of oxygen and nitrogen

CMS adsorbents having suitable indexes are used to improve greatly the performance of nitrogen-producing apparatuses where nitrogen is obtained from the air with a PSA method, so as to improve the efficiency of nitrogen production. A nitrogen PSA apparatus is formed with two adsorbing columns where an adsorption step and a regeneration step are performed alternatively and periodically. The adsorption step is for adsorbing oxygen and conducting nitrogen to a product tank with the supply of compressed air from an air compressor, and the regeneration step for releasing the adsorbed gas after the adsorption step. The adsorbing columns are filled with a carbon molecular sieve (CMS) that selectively adsorbs oxygen as an adsorbent. The CMS adsorbs an oxygen/nitrogen amount of 50% of the saturated adsorption amount with a period TO/TN starting from oxygen/nitrogen supply, wherein TO is 5&tilde;10 seconds and TN is larger than TO by more than 41 times.

Method and apparatus for producing nitrogen

Manufacturing method for carbon material for electrical double layer

It is the objective of the present invention to provide an active carbon electrode which is of sufficient mechanical strength to be formed into a large plate, may be suitably used as an electrical double layer condenser capable of a large current discharge, and which can realize a high capacitance. The method of production for such an active carbon electrode comprises the steps of a) producing a carbon base material by carrying out a first activation treatment to a carbon material obtained by carbonization of a carbon compound; b) producing a formed body by adding a binder to the carbon base material; c) carbonizing the formed body; and d) producing an active carbon electrode by carrying out a second activation treatment to the carbonized formed body.

Method of production for active carbon electrode for use as electrical

Growing community of inventors

Kitakoma-gun, Japan

Shinichi Marumo