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    Method and apparatus for feeding wastes into a boiler
    3.
    发明公开
    Method and apparatus for feeding wastes into a boiler 失效
    为废料进给到锅炉的方法和装置

    公开(公告)号：EP0796823A3

    公开(公告)日：1998-07-22

    申请号：EP97104713

    申请日：1997-03-19

    Applicant: EBARA CORP

    Inventor： HIGO TSUTOMU ,  SERIKAWA ROBERTO MASAHIRO ,  KONDO KAZUHIRO

    IPC: F23G5/02 ,  B09B3/00 ,  B09C1/06 ,  C02F11/10 ,  C02F11/18 ,  F23K1/02

    CPC classification number: C02F11/18 ,  B09B3/00 ,  B09C1/06 ,  C02F11/10 ,  Y02W10/40 ,  Y10S210/919

    Abstract: Improved method for feeding a waste containing organic solids into a boiler after it has been subjected to a hydrothermal reaction treatment in the presence of water comprises the steps of holding a slurry containing said waste under a high-temperature and high-pressure condition to cause a hydrothermal reaction such that an acidic slurry is formed during part of or throughout the process of said hydrothermal reaction, thereby reducing the content of oxygen in said waste relative to the carbon atoms in the building molecule of said waste, concurrently causing any halogens in said building molecule to be transferred into said slurry, then cooling said slurry, dewatering the cooled slurry and feeding the dewatered slurry into the combustion section of the boiler. In a preferred embodiment, the waste slurry to be subjected to the hydrothermal reaction is sorted into two portions for separate storage, one being a waste slurry the pH of which will increase as a result of the hydrothermal reaction and the other being a waste slurry the pH of which will decrease during the hydrothermal reaction, and the two slurries are combined together and subjected to the hydrothermal reaction with their relative amounts of supply being adjusted such as to form an acidic slurry either during part of or throughout the process of the hydrothermal reaction. According to the method, wastes can be supplied as a mass of high heat value into a boiler in such a manner that the organic matter is transferred by a smaller amount into the aqueous phase during a hydrothermal reaction and there is no scale deposit on the surfaces of those areas of the system components in contact with the liquid.

    5.
    发明专利
    未知

    公开(公告)号：DE69723918T2

    公开(公告)日：2004-07-15

    申请号：DE69723918

    申请日：1997-04-30

    Applicant: EBARA CORP

    Inventor： NAGAMATSU SADASUKE ,  HIGO TSUTOMU ,  FUKUDA TOSHIO

    IPC: B09B3/00 ,  C02F3/28 ,  C02F11/04 ,  C02F11/18 ,  C10G1/00 ,  C10L1/32 ,  C10L9/02 ,  C12P5/02

    Abstract: The improved method of converting organic wastes to valuable resources comprises a methane fermentation step (4) in which a slurry of organic waste is retained for fermentation in an anaerobic digester to thereby generate a methane-containing gas and a fermentation slurry, a hydrothermal treatment step (11) in which the fermentation slurry is subjected to a hydrothermal reaction to thereby generate a carbon slurry, and a concentrating step (14) in which an aqueous phase is separated from the carbon slurry to thereby yield a concentrated carbon slurry having a high heating value. The method is capable of performing an effective hydrothermal treatment on a slurry of low water content, prevents the slurry from putrefaction during retention in the process and it yet is capable of effective treatment of the aqueous phase of the slurry after the hydrothermal treatment.

    Fluidised bed boiler provided with internal circulation and method for the control thereof
    7.
    发明专利
    Fluidised bed boiler provided with internal circulation and method for the control thereof 未知

    公开(公告)号：FI94170B

    公开(公告)日：1995-04-13

    申请号：FI896301

    申请日：1989-12-28

    Applicant: EBARA CORP

    Inventor： OHSHITA TAKAHIRO ,  HIGO TSUTOMU ,  KOSUGI SHIGERU ,  INUMARU NAOKI ,  KAWAGUCHI HAJIME

    IPC: F22B1/02 ,  B09B3/00 ,  F22B31/00 ,  F22B35/00 ,  F23C10/00 ,  F23C10/06 ,  F23C10/14 ,  F23G5/30 ,  F27B15/00 ,  F23C11/02

    Abstract: The present invention relates to a boiler with fluidised bed and of the internal recirculation type, comprising: a primary combustion chamber with fluidised bed and constructed from an air diffusion plate and an inclined intermediate wall, which is arranged above that section of the diffusion plate, in which the mass flow of the air injected from the diffusion plate is greater than what is the case from the second section to merge with the upward flowing fluidisation air, which is injected from this part, and to divert the flow towards the action above the diffusion plate, in which the mass flow of injected gas is less; and a thermal energy recovery chamber, which is formed between the inclined intermediate wall and the side wall of the combustion furnace; the inclined intermediate wall being inclined at 10 to 60 degrees in relation to the horizontal plane and arranged so that its projection in the horizontal direction is 1/6 - 1/2 of the horizontal length of the bottom of the combustion furnace, and a method for controlling the abovementioned fluidised bed boiler in respect of the amount of thermal energy utilised from the thermal energy recovery chamber, by regulating the quantity of injected air from the diffuser in the thermal energy extraction chamber on the basis of requirements from the consumer utilising the thermal energy extracted, the quantity of fuel fed into the primary fluidised bed combustion chamber being controlled on the basis of the temperature in the primary fluidised bed combustion chamber.

    8.
    发明专利
    未知

    公开(公告)号：DK166694B1

    公开(公告)日：1993-06-28

    申请号：DK128289

    申请日：1989-03-16

    Applicant: EBARA CORP

    Inventor： OHSHITA TAKAHIRO ,  HIGO TSUTOMU ,  KOSUGI SHIGERU ,  INUMARU NAOKI ,  KAWAGUCHI HAJIME

    IPC: F22B1/02 ,  B09B3/00 ,  F22B31/00 ,  F22B35/00 ,  F23C10/00 ,  F23C10/06 ,  F23C10/14 ,  F23G5/30 ,  F27B15/00 ,  F23C11/02

    Abstract: An internal circulation type fluidized bed boiler in which a fluidized bed primary combustion chamber is formed by providing above the portion of an air distributing plate from which the air having a higher mass velocity is ejected an inclined partition wall which is adapted to intercept an upward flow of the fluidization air ejected from this air ejection portion, and turn this upward flow of the air toward the position above the portion of the air distributing plate from which a gas having a low mass velocity is ejected, with a heat recovery chamber formed between the inclined partition wall and a furnace wall. The inclined partition wall is formed so as to have an angle of inclination of 10 DEG -60 DEG with respect to a horizontal plane, and a horizontal projection length of 1/6-1/2 of the horizontal length of the furnace bottom. The method of controlling this fluidized bed boiler consists of the steps of controlling the quantity of heat recovered from the heat recovery chamber in compliance with the request by the users of recovered heat by suitably regulating the flow rate of the air ejected from a diffuser for the heat recovery chamber, and controlling the feed rate of the fuel supplied to the fluidized bed primary combustion chamber, on the basis of the temperature of the fluidized bed primary combustion chamber.

    9.
    发明专利
    未知

    公开(公告)号：NO168912C

    公开(公告)日：1992-04-15

    申请号：NO891168

    申请日：1989-03-17

    Applicant: EBARA CORP

    Inventor： OHSHITA TAKAHIRO ,  HIGO TSUTOMU ,  KOSUGI SHIGERU ,  INUMARU NAOKI ,  KAWAGUCHI HAJIME

    IPC: F22B1/02 ,  B09B3/00 ,  F22B31/00 ,  F22B35/00 ,  F23C10/00 ,  F23C10/06 ,  F23C10/14 ,  F23G5/30 ,  F27B15/00 ,  F23C11/02

    Abstract: An internal circulation type fluidized bed boiler in which a fluidized bed primary combustion chamber is formed by providing above the portion of an air distributing plate from which the air having a higher mass velocity is ejected an inclined partition wall which is adapted to intercept an upward flow of the fluidization air ejected from this air ejection portion, and turn this upward flow of the air toward the position above the portion of the air distributing plate from which a gas having a low mass velocity is ejected, with a heat recovery chamber formed between the inclined partition wall and a furnace wall. The inclined partition wall is formed so as to have an angle of inclination of 10 DEG -60 DEG with respect to a horizontal plane, and a horizontal projection length of 1/6-1/2 of the horizontal length of the furnace bottom. The method of controlling this fluidized bed boiler consists of the steps of controlling the quantity of heat recovered from the heat recovery chamber in compliance with the request by the users of recovered heat by suitably regulating the flow rate of the air ejected from a diffuser for the heat recovery chamber, and controlling the feed rate of the fuel supplied to the fluidized bed primary combustion chamber, on the basis of the temperature of the fluidized bed primary combustion chamber.

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