Patent ID: 7803329
Filing Date: 2010-09-28
Classification: C01C,C10G,C10J,C10K,Y02E,Y02P

Abstract:
1. A multi-product plant for the production of ammonia and Fischer-Tropsch hydrocarbons, the plant comprising: an air separation unit comprising an inlet for air and outlets for oxygen and nitrogen; a synthesis gas generator comprising inlets whereby oxygen from the air separation unit, carbonaceous raw material, and water are introduced to the synthesis gas generator, and an outlet for synthesis gas, the synthesis gas generator being adapted to convert the oxygen, carbonaceous raw material, and water under synthesis gas forming operating conditions into synthesis gas; a cooling unit for cooling the synthesis gas, the cooling unit comprising outlets for water and cooled synthesis gas; a means for separating the cooled synthesis gas into a first portion of synthesis gas and a second portion of synthesis gas; a Fischer-Tropsch reactor, the Fischer-Tropsch reactor comprising an inlet for the first portion of synthesis gas, an outlet for tail gases comprising unreacted carbon monoxide, carbon dioxide, and gaseous hydrocarbons and an outlet for liquid hydrocarbons; the Fischer-Tropsch reactor adapted to form primarily aliphatic hydrocarbons and carbon dioxide from the first portion of synthesis gas; a compressor comprising an inlet for the second portion of the synthesis gas and the Fischer-Tropsch tail gas and an outlet for a compressed gas mixture; one or more shift reactors comprising inlets for the compressed gas mixture and steam and an outlet for shifted gases comprising hydrogen and carbon dioxide; the one or more shift reactors adapted to convert a portion of the carbon monoxide and water to hydrogen and carbon dioxide; a hydrogen membrane separator comprising an inlet for the shifted gases and outlets for a hydrogen-rich gas stream and a hydrogen-lean gas stream; a gas turbine combustor of a combined cycle plant, the gas turbine combustor comprising an inlet for the hydrogen-lean gas stream, adapted for burning the hydrogen-lean gases to drive a generator mechanically coupled to the gas turbine thereby producing electricity; a compressor comprising an inlet for the hydrogen-rich gas stream and an outlet for elevated pressure hydrogen-rich gas; a pressure swing adsorption unit comprising an inlet for the elevated pressure hydrogen-rich gas and an outlet for high purity hydrogen; and a reactor comprising inlets for a portion of the high purity hydrogen and nitrogen from the air separation unit and adapted to produce ammonia from the high purity hydrogen and the nitrogen.