A Single Source for Cryogenic Liquid and Medium / High Pressure Gas

Application

Many applications, such as food processing and packaging, blow molding, and some extrusion, grinding and deburring / deflashing processes, require both cryogenic liquid and medium to high pressure gas within the same facility. For example, food freezing tunnels require cold low pressure liquid nitrogen, often at only 1-3 bar for optimum cryogenic effect. At the same time the packing equipment needs a supply of inert nitrogen gas at 5-6 bar. Before Gas-Pack® this meant having either two bulk tanks, one for low pressure liquid and a second for the supply of gas, or a low pressure bulk tank and a regular resupply of high-pressure gas cylinders.
Gas-Pack® offers a simple, economic and effective solution to this problem.

Description

The Gas-Pack® system consists of three basic elements. It starts with the existing low pressure bulk tank, which is the single source of all the cryogenic gas.

The second element is a Chart Ferox Euro-Cyl® liquid gas cylinder, which supplies the gas. The model or size of the Euro-Cyl® is selected on the basis of the gas supply requirements (see table). The last element is the interconnecting piping and instrumentation.
Operation is safe and simple. The fill line of the Euro-Cyl® is permanently connected to the auxiliary liquid line of the bulk tank. To fill the Euro-Cyl® liquid is transferred from the bulk tank into the Euro-Cyl® until it is full. At the same time excess pressure is vented safely away. After filling, the Euro-Cyl’s pressure building system raises the operating pressure to the desired pressure set in the combination pressure control regulator. Once the operating pressure has been reached the Euro-Cyl® is ready to supply gas. To assure gas efficiency the Gas-Pack® is equipped with an economizer to optimize gas usage, a 24-bar working pressure to allow long stand-by periods, and the option to vent excess pressure and gas back to the bulk tank.

Flow Schematic

The Chart Ferox Gas-Pack® is available with 2 levels of automation: