公开(公告)号：JPH1087872A

公开(公告)日：1998-04-07

申请号：JP26124096

申请日：1996-09-09

Applicant: AGENCY IND SCIENCE TECHN ,  KUMAMOTO PREFECTURE

Inventor： SUGATA TAKESHI ,  NAKANE TAKASHI ,  SAKO TAKESHI ,  OTAKE KATSUTO ,  UENO KATSUHIKO ,  SATO SHINJI ,  NAGAOKA SHOJI ,  NAGATA MASANORI ,  NAGAYAMA SANPEI ,  KAMIMURA MAKOTO

IPC: C08J11/10

Abstract: PROBLEM TO BE SOLVED: To enable reinforcing fibers to be separated, recovered, and reused efficiently without damaging the fibers by bringing a fiber-reinforced plastic into contact and reaction with (sub)supercritical water. SOLUTION: After a fiber-reinforced plastic is charged into a reactor 1 and water supplied from a water cylinder 2 to a water tank 3 is charged into the reator 1 through a high-pressure pump 4 so that water occupies 1-50vol.% of the reactor 1, valves 5, 6 are closed and the reactor 1 is hermetically sealed. Then, a heat exchanger 8 and the reactor 1 are heated to 320-500 deg.C with a constant temp. bath 7 to bring water in the reactor 1 into a (sub)supercritical state. The reinforced plastic is brought into contact with the water in a (sub) supercritical state and thus is reacted. The reactor 1 is then returned to normal temp. and the valve 6 is opened to separate and recover a gaseous part contg. hydrocarbons, carbon dioxide, nitrogen, etc., through a trap 9.