Integrated Heavy Liquid Fuel Coking With Chemical Looping Concept

A process for chemical looping combustion with integrated hydrocarbon cracking, comprising the steps of:

• injecting a heavy liquid fuel and metal oxides into a cracking reactor;
• cracking the heavy fuel in the cracking reactor in the presence of the metal oxides to produce petroleum-based products and petcoke deposits on the metal oxides;
• delivering the metal oxides with petcoke deposited thereon from the cracking reactor to a fuel reactor;
• gasifying the metal oxides with petcoke deposited thereon in the fuel reactor in the presence of steam to produce a product gas stream, unburned gases, and reduced metal oxides;
• delivering the product gas stream, unburned gases, and the reduced metal oxides from the fuel reactor to a riser;
• separating the reduced metal oxides from the unburned gases and the product gas stream in a separation section;
• delivering the separated reduced metal oxides to an air reactor;
• and
• oxidizing the reduced metal oxides in the air reactor to produce oxidized metal oxides and flue gas, wherein the oxidized metal oxides are delivered back to the fuel reactor.

A system that integrates heavy fuel coking and chemical looping combustion comprising:

• a source of heavy liquid fuel;
• a cracking reactor in which the heavy liquid fuel and metal oxides are introduced, and the heavy liquid fuel undergoes a cracking reaction to form petroleum-based products and petcoke particles are deposited on the metal oxides;
• a fuel reactor that is in fluid communication with the cracking reactor and receives the metal oxides with petcoke deposited thereon through a first conduit, the fuel reactor being configured for gasifying the metal oxides with petcoke deposits thereon with steam that is introduced into the fuel reactor resulting in the production of syngas, unburned gases, and reduced metal oxides;
• a riser that is in fluid communication with the fuel reactor and receives the syngas and the reduced metal oxides, and is in fluid communication with the cracking reactor such that a first portion of reduced metal oxides is transported from the riser to the cracking reactor and a second portion of reduced metal oxides is transported from the riser to the fuel reactor;
• an air reactor that is in fluid communication with the fuel reactor through a second conduit and receives reduced metal oxides from the fuel reactor, the air reactor including an inlet for the introduction of air for oxidizing the reduced metal oxides to generate oxidized metal oxides and flue gases;
• and
• a third conduit that fluidly connects the air reactor and the fuel reactor such that a first portion of the oxidized metal oxides is transported from the air reactor to the fuel reactor, and a second portion of the oxidized metal oxides is recycled back to the air reactor.