Abstract:
A method and apparatus for the hydrolysis of organic materials are described, which method comprises the following steps: a) a mixture of preheated organic material and optionally water is fed into a reaction vessel (2), whereupon the mixture of the organic material is heated further in that steam is supplied from a subsequent reaction vessel (3) having a higher pressure in that a valve (8) between the reaction vessels (2, 3) is opened; b) the valve (8) is closed when the pressure in the reaction vessel (3) reaches a predetermined value or the pressure difference between the reaction vessels (2, 3) is approximately equal to zero; c) the pressure in the reactor vessel (3) is reduced further by means of a valve (9); d) the mixture of organic material in the reaction vessel (2) is transferred to the reaction vessel (3) by means of the pressure difference between the reaction vessels (2, 3), or with the aid of a pump; e) the reaction vessel (3) is re-pressurised by adding steam; f) steps a)-e) are repeated. The pressure in the reaction vessel (3) prior to the pressure release is preferably in the range of 10-25 bars. The pressure in the reaction vessel (2) is preferably in the range of 2-4 bars after the realease of the pressure from the reaction vessel (3). An apparatus is also described for the hydrolysis of organic materials, which comprises at least two reaction vessels (2, 3) each having an inlet and an outlet, said reaction vessels (2, 3) being connected to a pipe having a valve (10) for the transfer of organic material from the reaction vessel (2) to the reaction vessel (3), said reaction vessels (2, 3) being connected to a pipe having a valve (8) for the flash-off of steam from the reaction vessel (3) to the reaction vessel (2).
Abstract:
Einem mehrwandigen Höchstdruckbehältnis ist aus mit Boden (3, 6, 9) und Deckel (4, 7, 10) versehenen Hohlzylindern (2, 5, 8) gebildet, mit zwischen den Behältern herrschenden Drücken, das im Druckbereich von 1,2 GPa anwendbar ist. Hierbei soll eine Verbesserung der Materialausnutzung und Spannungsverteilung erzielt werden, wobei eine Minimierung der Belastungsspanne und des Materialvolumens angestrebt wird. Dies wird dadurch erreicht, daß jeder Hohlzylinder-Boden-Deckel-Teil (A, B, C) ein für sich abgeschlossenes System darstellt, das jeweils schwimmend im nächstfolgend äußeren System angeordnet ist, und die Zwischenräume gestuft druckbeaufschlagt sind.
Abstract:
A process includes periodically or continuously introducing an olefin monomer and periodically or continuously introducing a catalyst system or catalyst system components into a reaction mixture within a reaction system, oligomerizing the olefin monomer within the reaction mixture to form an oligomer product, and periodically or continuously discharging a reaction system effluent comprising the oligomer product from the reaction system. The reaction system includes a total reaction mixture volume and a heat exchanged portion of the reaction system comprising a heat exchanged reaction mixture volume and a total heat exchanged surface area providing indirect contact between the reaction mixture and a heat exchange medium. A ratio of the total heat exchanged surface area to the total reaction mixture volume within the reaction system is in a range from 0.75 in-1 to 5 in-1, and an oligomer product discharge rate from the reaction system is between 1.0 (lb)(hr-1)(gal-1) to 6.0 (lb)(hr-1)(gal-1).
Abstract:
The invention relates to an arrangement for preparing a gas (G) in a closable reactor (3) by supplying said reactor with carbon-based biomass or chopped wood material, such as chips, in substantially oxygen-free conditions, by allowing the biomass or wood material to gasify at a high temperature, and by recovering the gas (G) generated in a gasification reaction (R). In that the arrangement - the reactor (3) has its interior (30) defined by a feed pipe whose inlet end is closable with a shut-off valve (24), especially with a ball valve, and whose outlet end adjoins a heatable gasification dome (36), - biomass or chopped wood material is delivered from the feed pipe's inlet end into the reactor's (3) interior, - the reactor's interior (30) is supplied with free water/water vapor in its supercritical state, which is optionally prepared catalytically by splitting water/water vapor (V), - the biomass or wood material is conveyed into a gasification space (30; 31) of the reactor's interior, which is in connection with the heated gasification dome (36) and which is adapted to have existing conditions selected in a manner such that the water (V) present in said gasification space (31) is present in its supercritical state, - the gas (G) generated in the gasification reaction is recovered.
Abstract:
A presente invenção refere-se a ura sistema integrado para a produção de biocombustíveis a partir de biomassa e/ou resíduos mediante a interligação de equipamentos de hidrólise utilizando água sub-supercrítica e gaseificação em regime semi-contínuo ou continuo. A partir do sistema proposto, é possível converter biomassa, resíduos da indústria agroalímentar ou resíduos sanitários, no estado sólido ou líquido, em biocombustíveis, assim como obter açúcares fermentáveis para produção de etanol a partir da etapa de hidrólise ou biogás rico em hidrogénio e/ou metano a partir da gaseificação.
Abstract:
본 발명은 공액디엔의 제조방법 및 제조장치에 관한 것으로, 본 발명에 따르면 부타디엔을 포함하는 생성가스를 냉각시킨 다음 배출된 하부 배출수를 그대로 폐수처리하지 않고 부산물 제거 및 스팀 추출을 거쳐 전환된 스팀을 활용할 뿐 아니라 과도한 부산물 함량에 의한 기존 생물학적 폐수의 설비부담 문제를 해소할 수 있는 공액디엔의 제조방법 및 이에 사용되는 제조장치를 제공하는 효과가 있다.
Abstract:
In a method for the continuous precipitation of lignin from black liquor black liquor is provided so as to flow as a pressurized flow in a reactor (2) with a dwell time of less than 300s, - an acidifying agent selected from the group of carbon dioxide, acid and their combinations is led to the flow at one or more feeding sites (2a) to lower the pH of black liquor, - the pH is allowed to decrease by the effect of the acidifying agent in the pressurized flow to the precipitation point of lignin, the pressure of the pressurized flow is abruptly released, and lignin particles are separated from black liquor.
Abstract:
A pressure cycling system includes a reaction chamber configured to receive a sample and a charge pump in fluid communication with the reaction chamber. The charge pump is operable to convey a fluid from a fluid source toward the reaction chamber. The system also includes a check valve disposed between the charge pump and the reaction chamber. The check valve is operable to inhibit the flow of fluid from the reaction chamber toward the charge pump. A pressure intensifier is in fluid communication with the reaction chamber. The pressure intensifier is pneumatically operable to adjust a pressure in the reaction chamber. A controller is configured to control operation of the charge pump and the pressure intensifier. The controller is configured to pressurize the reaction chamber to a first pressure through operation of the charge pump. The controller is also configured to fluctuate the pressure in the reaction chamber between a second pressure and a third pressure through operation of the pressure intensifier.