What is meant by heterogeneous reactor?
[en] In a heterogeneous nuclear reactor, the longitudinal elements having a polygonal crossection and which are assembled into the reactor core have different dimensions in crossection, so that together they form a module which can be set adjacent to a similar one over an area.
What is homogeneous and heterogeneous reactor?
Homogeneous reactor- the reactor where one phase exist for both the reactants. Hetrogenous reactor – the reactors where more than one phase exist among the reactants gas-liquid-solid.
Which reactor is used for heterogeneous reaction?
Slurry reactors This reactor is typically used when one reactant is a gas and the other a liquid while the catalyst is a solid. The reactant gas is put through the liquid and dissolved. It then diffuses onto the catalyst surface.
What is meant by Homogeneous Reactor?
Definition of homogeneous reactor : a nuclear reactor in which the fuel is distributed (as by being dissolved in a liquid) uniformly or approximately uniformly throughout the moderator material.
What is an adiabatic reactor?
Adiabatic reactor: Vessel that is well insulated to minimize heat transfer and has an. increase or decrease in temperature from the initial inlet conditions due solely to the. heats of reaction. Batch reactor: Vessel used for chemical reaction that has no feed or effluent streams.
Is fixed bed reactor CSTR or PFR?
The most important reactors for heterogeneously catalyzed reactions are the fixed-bed reactors. The model reactor is the ideal plug flow reactor (PFR). The counterpart of the ideal PFR is the ideal continuous stirred-tank reactor (CSTR) with complete backmixing of the reaction mass.
What are the two types of reactors?
U.S. nuclear power plants use two types of nuclear reactors Nuclear power plants in the United States have either a boiling-water reactor or a pressurized-water reactor.
What is homogeneous nuclear reactor?
Which is used for moderator in the homogeneous nuclear reactor?
Water (sometimes called “light water” in this context) is the most commonly used moderator (roughly 75% of the world’s reactors). Solid graphite (20% of reactors) and heavy water (5% of reactors) are the main alternatives.
What is an isothermal reactor?
The Linde isothermal reactor is a fixed bed reactor with indirect heat exchange suitable for endothermic and exothermic catalytic reactions. This reactor provides the benefits of a tube reactor while simultaneously avoiding the heat tension problems of a straight tube reactor.
What is non adiabatic reactor?
A non-adiabatic radial reactor is proposed to carry out the dehydrogenation of ethylbenzene to styrene. Radial flow and continuous heating (using superheated steam) are the main features of the new design. Steam used as heating medium flows through tubes, which are radially installed in the catalyst bed.
What is CSTR and PFR?
(CSTR and PFR stand for Continuous Stirred-Tank Reactor and Plug Flow Reactor.) For zero-order kinetics, this ratio is always equal to one and is independent of conversion.
Is PBR same as PFR?
The most important characteristic of a PBR is that material flows through the reactor as a plug; they are also called plug flow reactors (PFR).