Asahi Kasei Kogyo Kabushiki Kaisha

Tatsushi Saeki

Tetsuya Miyake

Maomi Seko

Kunihiko Takeda

Naoki Miyata

Masatoshi Tanouchi

Hiroshi Takeuchi

Kazuki Ban

A mixture containing formaldehyde and water is separated effectively by contacting with adsorbents of specific type A zeolites containing exchanged cations of the elements from Group IA (4) to (6) or Group IIA (6) or mixture thereof of the Periodic Table of Elements.

Purification of formaldehyde by separation

A process for recovering heavy metal ions or heavy metal ions and halogen values from a solution comprising a lower aliphatic monocarboxylic acid, which comprises the steps of:

Process for recovering heavy metal ions or heavy metal ions and halogen

A hydrocarbon mixture is fed to a system of adsorbents in a plug flow so as to form at least one displacement boundary in the system to accumulate the composition in the vicinity of the boundary. The process is simple to operate and suitable for separation of a hydrocarbon mixture containing components with similar physical and chemical properties such as a mixture of hydrocarbon isomers.

Process for separation of hydrocarbon mixture

Growing community of inventors

Yokohama, Japan

Tatsushi Saeki