Abstract: The invention relates to a plant for filling gas cylinders with pure gases and/or mixtures of pure gases or special gases, said plant including: a device for selecting gas and/or for making mixtures of gases to be fed into a gas cylinder; apparatuses for analyzing the composition of said mixtures or said pure gases; characterized in that the following measures are implemented: the plant is integrally contained in a transportable container having a ground surface lower than 45 m2, said ground surface preferably being between 34 m2 and 40 m2; the devices contained in said container are attached to the walls of the container and can be connected to gas sources outside the container; the arrangement thus obtained enables the users to access said devices and apparatuses from the inside of said container and to fill the cylinders inside said container.

Abstract: The invention concerns a process respectively a device for filling a high pressure gas container (1), comprising the following steps: Supplying a liquefied or solidified first gas (2) into a gas container (1) while the gas container (1) is being cooled; stopping the cooling of the gas container (1) after the supplying step of the first gas; then introducing a gaseous second gas (3) into the gas container (1) and closing the gas container (1). The invention allows for a efficient, reproducible, reliable and economical filling of high pressure gas containers (1), in particular for airbag systems or for fuel cells, and allows to use conventional devices for introducing gases respectively closing gas containers that are not particularly adapted for low temperature respectively high pressure applications.

Abstract: A method for drying semi-crystalline synthetic resin pellets, particularly polyethylene terephthalate (PET) pellets, according to which a heating gas is supplied to a drying vessel; synthetic resin pellets are passed countercurrently through the vessel, and the synthetic resin pellets are heated to drying temperature. Depending on pellet parameters measured at the outlet of the vessel, such as temperature, residual moisture content and/or density of the material, the temperature, quantity and/or moisture content of the heating gas supplied to the vessel are regulated.

Abstract: A process, an arrangement and a gas supply station for filling high pressure gas containers include supplying a liquefied or solidified first gas (2) from a gas supply station (13) through a thermally isolated filling tube (14) with a moveable tube head (15) to the high pressure gas container (1); as well as a process of batch filling of high pressure gas containers (1) with gas, wherein multiple gas containers (1) are cooled in parallel, which are filled sequentially using the process. The invention allows for fast, economical, reliable, reproducible and precise filling of high pressure gas containers, wherein a number of the known conventional devices that are not particularly suited for high pressure respectively low temperature appliances may still be used.

Abstract: The invention concerns a process, an arrangement and a device for filling a high pressure gas container (1) with liquefied gas, comprising the following steps connecting the gas container to a metering valve (17) and connecting the metering valve (17) to a first container (21) containing liquefied gas, wherein the first container (21) is positions above the gas container (1) at a geodetic height (H); opening the metering valve (17) and admitting the quantity of liquefied gas is supplied with the first container (21) into the gas container (1) at a hydrostatic pressure that corresponds to the geodetic height (H); closing the metering valve (17). As the hydrostatic pressure may be tightly controlled, the high pressure gas container (1) may be efficiently, reproducible, reliable and economically filled at a particularly high metering precision.

Abstract: A process and a device for cleaning waste gas from pulp production, especially for cleaning waste gases from a bleaching reactor. Aerosols contained in the waste gas are removed and the gaseous impurities are scrubbed out of the waste gas by a scrubbing liquid.

Abstract: The invention relates to a method and device for the treatment of waste gas from a cellulose production, in particular, for treatment of the waste gases from a bleaching reactor (1), whereby aerosols in the waste gases are removed (4) and gaseous contaminants are scrubbed from the waste gas by means of a scrubbing fluid.