Back to results
US 7,169,293 B2Granted
Controllable space velocity reactor and process
AssigneeUop LLC
InventorsDavid A. Lomas, Lawrence W. Miller
Life of this patent
Estimating the term…
Abstract
Disclosed is an apparatus and process for controlling space velocity in a fluidized catalytic conversion reactor. The catalyst flux rate can be adjusted during the process of the reaction to adjust the space velocity and maintain a fast fluidized flow regime therein. The set parameter in the reactor may be pressure drop which is proportional to catalyst density.
Claims10
A process of catalytically reacting a feed by contacting it with catalyst particles at a controlled space velocity, said process comprising:
- delivering catalyst particles to a reactor section at a rate sufficient to provide a catalyst flux of between about 15 and about 1100 kg/m2s and a catalyst density in the reactor section between 48 and 320 kg/in3 upon fluidization;
- distributing a reactant stream to said reactor section at a rate sufficient to provide a superficial velocity of between about 1 m/s and about 9 m/s, that will fluidize the catalyst particles and contact the reactant stream with catalyst particles,
- contacting said catalyst particles with said reactant stream;
- catalyzing the conversion of the reactant stream to a product stream;
- withdrawing catalyst particles and product fluid, including said product stream, from the reactor;
- separating said catalyst particles from said product fluid;
- recycling said catalyst particles which have not been regenerated as recycled catalyst particles to said reactor section;
- and
- mixing said recycled catalyst particles with regenerated catalyst particles before said regenerated catalyst particles contact said reactant stream.
6 more elements
A process of catalytically reacting a feed by contacting it with catalyst particles, said process comprising:
- delivering catalyst particles to a reactor section at a catalyst circulation rate to provide a catalyst flux sufficient to provide a catalyst density in the reactor section upon fluidization;
- distributing a reactant stream to the reactor section at a rate sufficient to fluidize the catalyst particles and contact the reactant stream with catalyst particles;
- contacting said catalyst particles with said reactant stream;
- catalyzing the conversion of the reactant stream to a product stream;
- measuring a pressure drop in said reactor section;
- controlling the catalyst circulation rate in response to the pressure drop in the reactor section;
- and
- withdrawing catalyst particles and said product stream from the reactor section.
5 more elements
Dependencies are inferred from the claim text.