Abstract: Apparatus and process are provided to enable rapid start up of hydrogen generator (1) that use partial oxidation reforming. In the start up processes, a heated oxygen containing gas (110) is passed through the reformer (106) and at least one downstream unit operation (108) to achieve a first temperature regime. Then a heated steam containing gas is used to raise the temperatures of the reformer (106) and at least one downstream unit operation (108) to a second temperature regime at which partial oxidation reforming can be initiated.

Abstract: Hydrogen generators and integrated hydrogen generator/fuel cells systems are operated by determining the condition of the hydrogen generator and the condition of the fuel to the hydrogen generator for selection of predetermined flow rates for each of the externally-provided raw materials. The processes of the invention can provide rapid transitions between hydrogen production rates while enabling enhanced efficiency and stability during transient operations.

Abstract: A firearm is disclosed which includes a gun body having a firing mechanism and a barrel mount movable between a barrel loading position and a firing position. The firing mechanism is maintained in inoperative condition unless the barrel mount is correctly positioned in the firing position. A shoulder stock is releasably mountable on the gun body to permit the firearm to be selectively usable in pistol or rifle form. A plurality of barrel parts are selectively mountable on the gun body and include a first barrel of a length capable of firing baton rounds and gas rounds and a first insert of a similar length adapted to be fitted from only the end adjacent to the barrel mount into the first barrel to provide a smaller caliber barrel. A second barrel of a shorter length than the first barrel is provided and is capable of firing flare rounds.