(reactor catalyst bed)

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• Chemical reactor — In chemical engineering, chemical reactors are vessels designed to contain chemical reactions. The design of a chemical reactor deals with multiple aspects of chemical engineering. Chemical engineers design reactors to maximize net present value… …   Wikipedia

• Packed bed — In chemical processing, a packed bed is a hollow tube, pipe, or other vessel that is filled with a packing material. The packing can be randomly filled with small objects like Raschig rings or else it can be a specifically designed structured… …   Wikipedia

• Fluidized bed reactor — A fluidized bed reactor (FBR) is a type of reactor device that can be used to carry out a variety of multiphase chemical reactions. In this type of reactor, a fluid (gas or liquid) is passed through a granular solid material (usually a catalyst… …   Wikipedia

• fixed-bed catalyst — Any catalyst used in a reactor where the catalyst fills the reactor and remains motionless (fixed) and the gas and/or liquid feed mixtures flows past. The fluid flows through the void spaces between catalyst particles …   Petroleum refining glossary

• moving-bed catalyst — Moving bed catalytic processes add fresh or regenerated catalyst to the top of a reactor bed while simultaneously removing less active, used catalyst from the bottom. An important current example is UOP’s CCR reforming process. Catalysts for… …   Petroleum refining glossary

• Plug flow reactor model — The plug flow reactor (PFR) model is used to describe chemical reactions in continuous, flowing systems. The PFR model is used to predict the behaviour of chemical reactors, so that key reactor variables, such as the dimensions of the reactor,… …   Wikipedia

• cyclic fixed-bed system — A process were the feed and conditions in a catalytic reactor are changed regularly in an alternating fashion. The most common example is where the reaction deposits coke; feed is passed through the bed continuously until the activity falls to a… …   Petroleum refining glossary

• petroleum refining — Introduction  conversion of crude oil into useful products. History Distillation of kerosene and naphtha       The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …   Universalium

• Glossary of fuel cell terms — The Glossary of fuel cell terms lists the definitions of many terms used within the fuel cell industry. The terms in this glossary may be used by fuel cell industry associations, in education material and fuel cell codes and standards to name but …   Wikipedia

• Claus process — The Claus process is the most significant gas desulfurizing process, recovering elemental sulfur from gaseous hydrogen sulfide. First patented in 1883 by the scientist Carl Friedrich Claus, the Claus process has become the industry standard. The… …   Wikipedia

• hydrogen — /huy dreuh jeuhn/, n. a colorless, odorless, flammable gas that combines chemically with oxygen to form water: the lightest of the known elements. Symbol: H; at. wt.: 1.00797; at. no.: 1; density: 0.0899 g/l at 0°C and 760 mm pressure. [1785 95;… …   Universalium