Abstract: A process for separating natural gas and carbon dioxide from a raw feed stream, such as in carbon dioxide for EOR processes. Separation is by membrane separation at low pressures. By utilizing low pressure separation, highly selective membranes can be used and recycling becomes practical.

Abstract: A process for producing carbon dioxide from a gas stream containing same pretreats the incoming raw gas to remove contaminants and particularly to protect degradation of the membranes utilized for separation. The temperatures of the various gas streams are carefully controlled to reduce water from the stream. By-product and other gas streams of the process are recycled in order to increase efficiency by utilizing the heating or cooling properties of the streams. In addition, streams containing minor portions of carbon dioxide are returned to the system for recovery.

Abstract: Multiple cutting torches are automatically spaced along a torch bar operating parallel to a main beam spanning a cutting table with an apparatus and method allowing one or all of the cutting torches to be stored completely outside the cutting table when not in use, thereby retaining the entire cutting table width for effective access by the remaining operative cutting torches. This eliminates the need to have an extended main beam length simply to accommodate cutting torch storage. The torch bar provides primary support for the torch carriages and includes an end storage portion which can be moved laterally beyond the end of the main beam from which one or all of the cutting torches may be retrieved for subsequent programmed spacing and cutting operation.

Abstract: A billet cutting apparatus of the type including an oxy-fuel cutting torch includes a slag removal nozzle operative simultaneously with the cutting torch to direct a jet of oxygen along the lower edge of the billet to remove slag beads tending to form thereon. The oxygen nozzle has a unique opening configuration which provides a thin, flat oxygen stream effective over a substantial distance, such that the nozzle can be mounted laterally of the billet and outside the hostile and potentially damaging environment created by the cutting torch and the hot billet. The nozzle may be conveniently mounted in a fixed position and, in an automated billet cutting apparatus, may be attached directly to one of the billet clamping arms.

Abstract: A breakaway mounting assembly for a cutting torch or other non-contact tool includes a tool mounting collar with an outer frustoconical bearing surface adapted to be received in an annular support ring having a complimentary inner frustoconical bearing surface providing precision torch positioning. Resilient spring-biased detents hold the torch and mounting collar in the operating position, but are deflected in the event the torch collides with an obstruction, allowing the torch to be dislodged from the mounting without damage. The dislodged torch can be remounted with a simple snap-in action and precise realignment is automaticaly established. A switch which is activated by displacement between the supporting frustoconical bearing surfaces may be used to signal the operator or cause an appropriate response in the torch carriage operating system.

Abstract: A slag flushing and water level control system for the burn tank of a metal cutting apparatus utilizes a pair of separate water displacement chambers disposed in the tank below an inclined slag-collecting intermediate floor section. Water is displaced from one chamber by compressed air and caused to flow over the upper edge of the inclined floor and cascade downwardly thereover, carrying with it the slag deposited thereon. The water used in flushing the floor is collected in the second displacement chamber and subsequently displaced therefrom by air pressure to fill the burn tank and raise the level therein to a selected operating level. After completion of the cutting operation, sequential relief of the air pressure in the first and second chambers allows appropriate volumes of water to return thereto for a subsequent cycle.

Abstract: Apparatus for improving oxygen burner performance in a glass furnace having a chamber with a bottom wall connected to a roof wall by side walls, said walls having refractory surfaces, and an opening in the roof wall, comprises a burner for injecting a flame downwardly into the chamber through the roof opening with the flame being adapted to impinge against a bath of molten glass on the bottom wall of the chamber, a hopper for inserting a shower of cullet into the chamber through the roof opening, and a burner spout having a flared end for forming the shower of cullet into a shroud around the flame and for heating the shower of cullet and for forming the cullet into an annular ridge of unmelted cullet on the top surface of the molten glass bath, whereby said ridge deflects the flame upwardly when the flame bounces from the bath of molten glass so that the flame does not bounce horizontally and impinge against the near surface of the side walls, and the shower of cullet shrouds the flame and protects the furnac

Abstract: A compact integrated gas phase separator and subcooler for removing gas phases from a liquid gas and subcooling the liquid gas comprises a subcooler with a subcooler container having a subcooled bath of liquid gas, a gas phase separator having a container submerged in the subcooler bath, a tube for delivering liquid gas from a supply line into the gas phase separator, a coil extending from the gas phase separator for delivering the liquid through the subcooler bath to subcool the liquid and deliver it to an outlet tube to the supply lines. A takeoff tube and float valve delivers gas and liquid from the separator to the subcooler, and the heat from the coil vaporizes some of the liquid in the subcooler to reduce the level of the bath and to operate the float valve to deliver the gas from the separator to the subcooler and to replenish the level of the liquid in the subcooler by delivering liquid to it from the separator.