Abstract:
The present invention relates to a pressure drum (1) for filling, storing, transporting and discharging a catalyst (3) for a production of olefin polymers. The pressure drum (1) comprises a cylindrical body (7) with a first end (9) and a second end (11). Furthermore, the pressure drum (1) comprises a first torispherical head (13) and a second torispherical head (15). The first torispherical head (13) is arranged at the first end (9) of the cylindrical body (7) and the second torispherical head (15) is arranged at the second end (11) of the cylindrical body (7). The first torispherical head (13) and the second torispherical head (15) are connected to the cylindrical body (7) by full penetration welding in such a way that the pressure drum is adapted for withstanding pressures between-0,5 and 9 bar g.
Abstract:
The present invention provides a high vacuum component, e.g. a vacuum chamber wall (1) or a component that is operated or positioned within a vacuum chamber in use. The component is substantially formed of a layered material comprising a fibrous composite material layer (4) having a surface that is coated with a copper intermediate layer (5) and an impermeable outer layer (6) of nickel. In use the outer layer (6) is exposed to a high vacuum.
Abstract:
An apparatus and method for processing materials in supercritical fluids is disclosed. The apparatus includes a capsule configured to contain a supercritical fluid, a high strength enclosure disposed about the capsule and a sensor configured to sense pressure difference between an interior and an exterior of the capsule. The apparatus also includes a pressure control device configured to adjust pressure difference of the capsule in response to the pressure difference sensed by the sensor. The apparatus further includes at least one dividing structure disposed within the capsule that divides the capsule into a seed growing chamber and a nutrient chamber.
Abstract:
Autoclaves with combined airflow to provide controllable heating or cooling of parts being processed are disclosed. Gas flow along the autoclave is provided in one or more duct areas (48,52), with a plurality of duct valves (50) along the duct (48,52) controllably diverting the gas into the working area of the autoclave. In a fully configured autoclave, duct valves (50) divert gas flowing from the fan or blower (38) from the ceiling, sides and floor of an autoclave to provide a controllable, three dimensional, air flow in the working area of the autoclave. Control of the duct valves (50) may be manual or automatic, with individual or ganged duct valve control. Computer control based on temperature sensor on parts in the working area of the autoclave may be used to provide uniform heating or cooling, or intentional non-uniform heating or cooling rates. Various embodiments are disclosed.
Abstract:
A mixing head assembly comprising injecting nozzles for polyol and isocyanate which are disposed in the assembly at a double-tilted angle is disclosed. A passage for feeding a release agent is provided on a cleaning piston and a mixing chamber piston, and low frictional plastic scrapers are provided on the cleaning piston and the mixing chamber piston to prevent the components from being leaked out of the main body.
Abstract:
The invention concerns device for closing and locking the door (3) of a chamber, comprising a pin (5) mounted in axial rotation on the door (3) and including, at its free end, at least a transverse stop (7) adapted to co-operate with a cam-shaped surface integral with the frame (1) of the chamber (3) such that when the pin (5) rotates in a specific direction, as the stop (7) is pressed on the cam (9'), it causes the door to be pressed in closing position. The device comprises sensor means (13) and locking means comprising a lock (25) mobile parallel to the axis (yy') of the pin (5) between a locking position wherein the housing locks the stop in rotation, and an unlocking position.
Abstract:
The invention concerns a shelf assembly in autoclaves (12), the shelves of which serve as reception surfaces intended to support articles (7) to be sterilised by spraying the articles with hot water, which is made to be sprinkled over the articles (7) to be sterilised, from one shelf to the next of the shelf assembly. According to the invention, each one of said shelves (1, 2, 3) is subdivided into two shelf layers (1a, 1b; 2a, 2b; 3a, 3b). An upper layer (1a, 2a, 3a) is formed with perforated zones (5) designed to receive thereon the articles (7) to be sterilised, and with apertures (6) positioned intermediate the perforated zones. A lower layer (1b, 2b, 3b) is similarly formed with perforated zones (8), each one of which is located below one of the perforated zones (5) of the upper layer (1a, 2a, 3a), said perforated zones (8) serving to allow passage-through and distribution of the sprinkling water over the articles (7) to be sterilised that are positioned on the shelf (2 or 3) located immediately below. The lower shelf layer (1b, 2b, 3b) is also provided with impervious zones (9) positioned between the perforated zones (8) of said lower layer and in vertical alignment with the respective apertures (6) formed in th upper layer (1a, 2a, 3a) above.
Abstract:
A safety device for a gas or steam pressure vessel, including at least one downstream valve (6) connected to the pressure vessel via a tubing (3) with a burst disc (4) dividing the tubing (3) into an upstream section (A) and a downstream section (B). The device is characterised in that the downstream section (B) comprises a protective assembly (15) for minimising the maximum pressure of a shock wave generated when the burst disc (4) is broken and striking the flap of the or each valve (6).
Abstract:
A containment casing (10) for a deep well/gravity pressure reactor vessel includes a plurality of casing sections (11) each having a wall portion (20) with corrugations (21). An inner liner (24) and an exterior liner (25) prevent grout material (13) from entering the corrugations (21) during installation. Additionally, inner liner (24) is capable of supporting the hanging weight of the casing sections (11), and yet is susceptible to failure due to stresses induced by thermal fluctuations. The corrugations (21) allow for thermal expansion without a buildup of compression stresses and further allow for angular deviations of the casing (10).