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    METHOD FOR RECOVERING AND REUSING FIBER FROM FIBER-REINFORCED PLASTIC
    2.
    发明专利
    METHOD FOR RECOVERING AND REUSING FIBER FROM FIBER-REINFORCED PLASTIC 失效

    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.

    METHOD FOR DECOMPOSING DIOXINS WITH SUPERCRITICAL WATER
    9.
    发明专利
    METHOD FOR DECOMPOSING DIOXINS WITH SUPERCRITICAL WATER 失效

    公开(公告)号：JPH09327678A

    公开(公告)日：1997-12-22

    申请号：JP14694096

    申请日：1996-06-10

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： SAKO TAKESHI ,  SATO SHINJI ,  SUGATA TAKESHI ,  OTAKE KATSUTO ,  TSUGUMI MASAYUKI

    IPC: A62D3/20 ,  A62D3/38 ,  A62D101/08 ,  A62D101/22 ,  A62D101/26 ,  A62D101/28 ,  B09B3/00 ,  A62D3/00

    Abstract: PROBLEM TO BE SOLVED: To make dioxins harmless by an industrially advantageous method wherein inorg. powder contg. dioxins is dispersed into supercritical water held at least at the critical temp. and at least under the critical pressure and dioxins are decomposed under this condition. SOLUTION: Inorg. powder contg. dioxins, water and open air are filled in a reactor and it is heated at 653-873K being at least critical temp. of water, pref. 653-773K. In this case, the reaction pressure is controlled by wt. of water filled in the reactor and 22-40MPa, pref. 25-35MPa is pref. After a specified reaction time passes, in the case where an oxidizing agent is not incorporated, at least 96.5% dioxins in the reactor are decomposed and in the case where such an oxidizing agent as hydrogen peroxide and oxygen gas is incorporated, at least 98.5% dioxins are decomposed. Thereby, dioxins can be made harmless by an industrially advantageous method without necessitating high reaction temp. and complicated reaction control.

    PRODUCTION OF MONOLITHIC COMPOSITE MATERIAL OF METAL COMPOUND AND SILICA AEROGEL USING SUPERCRITICAL IMPREGNATION
    10.
    发明专利
    PRODUCTION OF MONOLITHIC COMPOSITE MATERIAL OF METAL COMPOUND AND SILICA AEROGEL USING SUPERCRITICAL IMPREGNATION 失效

    公开(公告)号：JP2001089129A

    公开(公告)日：2001-04-03

    申请号：JP26477899

    申请日：1999-09-20

    Applicant: AGENCY IND SCIENCE TECHN

    Inventor： YODA SATOSHI ,  OTAKE KATSUTO ,  TAKEBAYASHI YOSHIHIRO ,  SUGATA TAKESHI ,  SAKO TAKESHI

    IPC: B01J3/00 ,  C01B33/16

    Abstract: PROBLEM TO BE SOLVED: To solve the problems of conventional process for the impregnation of a metal compound in a wet silica gel in liquid phase comprising the long time necessary for the impregnation into the gel depending on the kind and concentration of the compound and the formation of an insufficiently impregnated product to cause frequent failure in getting a monolithic composite material of metal compound and silica aerogel. SOLUTION: A dry medium mixed with a metal compound is impregnated in a wet silica gel and dried to obtain a silica aerogel composed of the metal compound and silica particles forming a composite material. In the above process, both of the impregnation process and the drying process are carried out under supercritical condition of the dry medium to obtain the objective monolithic composite material of metal compound and silica aerogel.

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