Abstract:
Method for the safety and extension of the operating life of pressure equipment comprising an internal chamber suitable for containing a process fluid, surrounded by a pressure-resistant body (1) equipped with weep-holes (2), consisting of a material subject to corrosion by contact with said process fluid during operation, coated inside with an anticorrosive lining (4) made up of several elements welded to each other, wherein said lining weldings (3) are completely isolated from contact with the process fluid of the normal operating run, by a coating with adjoining strips (or plates) (10, 10', 10', 10'''), of the same material as said lining (4) or other corrosion-resistant material weldable thereto, which are subsequently seal-welded on the edges to said lining (4) and to each other, characterized in that the arrangement and welding of the edges of these strips (10, 10', 10', 10''') are such as to create a network of underlying interstices (or meati) (9, 11), communicating with each other and with at least one weep-hole (2).
Abstract:
The invention relates to the equipment for high-pressure, high-temperature treatment of materials in liquid and enables to broaden the technological capabilities of an isostatic press. The isostatic press for treatment of materials in liquid comprises a multi-cylinder pressure vessel forming a hermetically sealed working chamber connected to a gas source. The open-top container for liquid is placed in the working chamber in such a way that a gap is created between the inner wall of the pressure vessel and the outer wall of the container. The container with the liquid and the treated material is placed on an electrically insulated heater which, in its turn, is mounted on a protective magnetic block.
Abstract:
A self sealing vessel assembly for high pressure microwave assisted chemistry is disclosed. The vessel assembly includes a polymeric cylinder (12) and a circular polymeric cap (13) for the cylinder, the cylinder being closed at one end and open at the other end to receive the cap. The open end of the cylinder has a lip that is bevelled inwardly from the open end, and the circular polymeric cap (13) has a bevelled lower edge that engages the bevelled lip when the cap (13) is placed upon the polymeric cylinder (12). For high pressure applications, a choke cylinder depends from the bevelled lower edge of the cap, and has an outer diameter substantially the same as the inner diameter of the polymeric cylinder (12) so that the choke provides a self sealing mechanism for the cylinder as pressure from a chemical reaction increases within the cylinder. A supporting frame (14) extends along the cylinder (12) and across the lid (13) and across the closed end of the cylinder, and prevents the lid from being displaced from the cylinder when pressure is generated inside of the vessel.
Abstract:
A reaction block assembly (11) of reaction vessels (13) for conducting chemical reactions under pressure. The assembly (11) includes a heat conductive reactive block (31,131) having reaction vessel (13) receiving openings (41,133) formed in the block (31,131). A heat exchanger (49) is mounted in heat transfer engagement with some of the exterior walls (39) of the reaction block (31,131). The heat exchangers (49) can operate in different modes, to provide a heat differential across the reaction block (31,131). A reaction vessel (13) is positioned in each reaction vessel receiving opening (41,133) in the block (31,131). A cap (81) is attached to each reaction vessel (13) and a cannula opening is formed in each cap (81). A cannula passage (111) is connected at one end to a cannula opening in each cap (81) and it has a septum (203) at the other end. A valve (193) controls each cannula passage (111). An operating mechanism is provided for opening and closing each cannula passage controlling valve (193). The reaction block assembly (11) may be used to determine when the reaction of a solution in a reaction vessel (13) is completed. This is accomplished by using a calibration curve comparing the frequency of rotation of the stirring bar (73) with the viscosity of the reaction solution in which the frequency is inversely proportional to the viscosity. The time interval at which the stir bar (73) decouples from rotation with the driving magnet is determined. This time interval of decoupling is compared with the calibration table to determine the viscosity of the solution at the time the reaction was completed which takes place at the time the stir bar (73) was decoupled.
Abstract:
Method for the safety and extension of the operating life of pressure equipment comprising an internal chamber suitable for containing a process fluid, surrounded by a pressure-resistant body (1) equipped with weep-holes (2), consisting of a material subject to corrosion by contact with said process fluid during operation, coated inside with an anticorrosive lining (4) made up of several elements welded to each other, wherein said lining weldings (3) are completely isolated from contact with the process fluid of the normal operating run, by a coating with adjoining strips (or plates) (10, 10', 10', 10'''), of the same material as said lining (4) or other corrosion-resistant material weldable thereto, which are subsequently seal-welded on the edges to said lining (4) and to each other, characterized in that the arrangement and welding of the edges of these strips (10, 10', 10', 10''') are such as to create a network of underlying interstices (or meati) (9, 11), communicating with each other and with at least one weep-hole (2).
Abstract:
A high-pressure and a method for high-pressure treatment of substances. The high-pressure press comprises a high-pressure cylinder consisting of a number of concentrically arranged cylinder elements (1, 2, 3). The cylinder elements (1, 2, 3) are radially prestressed to a predetermined prestress and surround a high-pressure chamber (6) for accommodating a pressurized medium. A thin safety liner (3), which is intended to be placed in the high-pressure cylinder until a fracture arises on the safety liner (3), is arranged in the interior of the high-pressure cylinder. Further, means (14, 15) are provided to conduct at least part of the pressurized medium from the high-pressure chamber (6) when a fracture arises on the safety liner (3). The means (14, 15) comprise at least one channel (14) running essentially along the outer envelope surface of the safety liner (3). The method comprises using the high-pressure press without liner replacement until a fracture has occurred on the thin safety liner.
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:
The present invention describes a novel reactor designed to carry out chemical reactions at temperatures possibly up to 1600°C and at pressures possibly up to 100 bar. The reactor according to the invention possesses two chambers surrounding the reaction zone, namely an internal chamber made from a refractory material and an external chamber surrounding the internal chamber and made of an insulating material.