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38 records (took 0.033 seconds)

    1.
    发明专利
    未知

    公开(公告)号：AT196211T

    公开(公告)日：2000-09-15

    申请号：AT96922134

    申请日：1996-07-02

    Applicant: BRITISH NUCLEAR FUELS PLC

    Inventor： JENNINGS HOWARD TIMOTHY ,  LI LIN

    IPC: G21F9/16 ,  B09B3/00 ,  C03B5/00 ,  G21F9/30 ,  G21F9/34

    Abstract: PCT No. PCT/GB96/01582 Sec. 371 Date Mar. 5, 1997 Sec. 102(e) Date Mar. 5, 1997 PCT Filed Jul. 2, 1996 PCT Pub. No. WO97/05630 PCT Pub. Date Feb. 13, 1997A method and apparatus for treating toxic waste by the vitrification thereof are described, the method comprising the steps of providing said waste in the form of relatively small pieces; optionally adding vitrifiable material to said waste; bringing a high intensity light source to bear on said waste and said optional vitrifiable material; said high intensity light source being of sufficient power to cause melting and subsequent vitrification of said waste; and, cooling and storing said vitrified material.

    Introducing ultrasound into a liquid containing chamber
    5.
    发明专利
    Introducing ultrasound into a liquid containing chamber 未知

    公开(公告)号：GB2306202A

    公开(公告)日：1997-04-30

    申请号：GB9520342

    申请日：1995-10-05

    Applicant: BRITISH NUCLEAR FUELS PLC

    Inventor： JENNINGS HOWARD TIMOTHY

    IPC: B01J19/10 ,  B08B3/12 ,  B08B9/02 ,  C23G3/04 ,  B08B7/02

    Abstract: A method of introducing ultrasound into a liquid containing chamber such as a pipe 12 comprises forming an annular liquid filled region 16 around the chamber and introducing ultrasound through transducers 28 into the region and thereby into the chamber. The annular region may be defined by an annular metal sleeve 14 and spaced apart sealing means 18, the transducers being coupled externally to the annular sleeve. The sealing means may be flexible sealing members such as endless fluid or gas filled tubes (46, 48 figure 3) or flexible lip seals (51, 52 figure 4). The peak energy of the ultrasound may occur near an internal surface of the chamber and cause cavitation of the liquid at that surface. The liquid in the annular region may be the same or different to that in the chamber, it may be in contact with the chamber wall and may be at a higher pressure than that in the chamber, which may contain a mild chemical reagent to assist in descaling the inside surface of the chamber, the reactivity of the reagent being increased by the ultrasound.

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