Adiabatic olefin production
AssigneeLummus Technology Inc.
InventorKandasamy M. Sundaram
Life of this patent
Estimating the term…
Abstract
Systems and processes for cracking hydrocarbons to produce olefins herein includes heating a hydrocarbon feedstock or a mixture comprising steam and hydrocarbons to a first temperature to form a preheated feed, and also include heating steam to a second, higher, temperature in a turbomachine to form a superheated reaction steam. The preheated feed is then mixed with the superheated reaction steam to form a reaction mixture at a cracking temperature, thereby cracking the hydrocarbons to form olefins, producing a reaction effluent. The reaction effluent is then quenched and separated effluent to recover the olefins.
Claims21
A process of cracking hydrocarbons to produce olefins, the process comprising:
- heating a hydrocarbon feedstock or a mixture comprising steam and hydrocarbons to a first temperature to form a preheated feed;
- heating steam to a second, higher, temperature in a turbomachine to form a superheated reaction steam;
- mixing the preheated feed with the superheated reaction steam to form a reaction mixture at a cracking temperature, and cracking the hydrocarbons to form olefins, producing a reaction effluent;
- quenching the reaction effluent;
- and
- separating the reaction effluent to recover the olefins.
A system for cracking hydrocarbons to produce olefins, comprising:
- a heating system configured for heating a mixture comprising steam and hydrocarbons to a first temperature to form a preheated mixture;
- a heating system comprising a turbomachine configured for heating steam to a second, higher, temperature to form a superheated reaction steam;
- a mixing system configured for mixing the preheated mixture with the superheated reaction steam to form a reaction mixture at a cracking temperature;
- an adiabatic reaction zone for adiabatically cracking the hydrocarbons to form olefins, producing a reaction effluent having a fourth temperature;
- a quench system for quenching the reaction effluent;
- and
- a separation system for separating the reaction effluent to recover the olefins.
A process of cracking hydrocarbons to produce olefins, the process comprising:
- heating a hydrocarbon feedstock or a mixture comprising steam and hydrocarbons to a first temperature to form a preheated feed;
- heating steam in a turbomachine to form a superheated steam;
- mixing the preheated feed with the superheated steam to form a reaction mixture having a temperature below a cracking temperature;
- heating the reaction mixture in single stage turbomachine to a cracking temperature, and cracking the hydrocarbons to form olefins, producing a reaction effluent;
- quenching the reaction effluent;
- and
- separating the reaction effluent to recover the olefins.
A system for cracking hydrocarbons to produce olefins, comprising:
- a first heating system configured for heating a mixture comprising steam and hydrocarbons to a first temperature to form a preheated mixture;
- a second heating system comprising a turbomachine configured for heating steam to form a superheated steam having a temperature below a cracking temperature;
- a mixing system configured for mixing the preheated mixture with the superheated steam to form a reaction mixture having a temperature below a cracking temperature;
- a single stage turbomachine for heating the reaction mixture to a cracking temperature and cracking the hydrocarbons to form olefins, producing a reaction effluent;
- a quench system for quenching the reaction effluent;
- and
- a separation system for separating the reaction effluent to recover the olefins.
Dependencies are inferred from the claim text.