摘要:
The invention concerns a method for the recovery of hydrocarbons from a natural gas subsurface reservoir, wherein a nitrogen stream (i) containing less than 10 ppm oxygen is injected into the natural gas reservoir, whereby the nitrogen stream (i) is prepared in and captured from a CLC reactor wherein a fuel is combusted through use of an oxygen carrier with a gas stream (ii) containing both oxygen and nitrogen, and wherein part of the hydrocarbons recovered from the natural gas reservoir are used as fuel in the CLC reactor. The invention further concerns an integrated production system with nitrogen injection for recovering hydrocarbons from a natural gas subsurface reservoir suitable for the above method.
摘要:
The invention relates to a method for the chemical looping combustion of a solid hydrocarbon feedstock, in which: particles of oxygen-carrying material originating from a reduction zone (RO) are brought into contact with a flow of oxidising gas in a reactive oxidation zone (R1); and the fly ash, the fines and the particles of oxygen carrying material in the mixture originating from zone R1 are separated in a diluted-phase separation zone (S2), the driving force required for diluted-phase elutriation in S2 being provided by the flow of oxidising gas from the reactive oxidation zone (R1). Optionally, enhanced separation is performed in a dust removal zone (S4) and, optionally, subsequently in a dense-phase elutriation separation zone (S5). The invention also relates to a chemical looping combustion facility that can be used to perform the aforementioned method.
摘要:
An improved system and method is provided for operating a parallel entrainment fluidized bed gasifier system. A first aspect of the present invention relates to a method for reducing ash agglomeration in a parallel entrainment fluidized bed gasifier/combustor system by adding a quantity of MgO to the feedstock used in the gasifier/combustor system. A second aspect of the present invention relates to an apparatus and method for reducing erosion at piping bends in fluidized particulate piping systems which utilizes sand retention cavities positioned to receive and retain a portion of the fluidized particulate. A third aspect of the present invention relates to an apparatus and method for facilitating the flow of sand and char fragments from a first compartment to a second compartment while minimizing the flow of gases between the first and second compartments.
摘要:
An improved system and method is provided for operating a parallel entrainment fluidized bed gasifier system (A). A first aspect of the present invention relates to a method for reducing ash agglomeration in a parallel entrainment fluidized bed gasifier/combustor system (20/22) by adding a quantity of MgO to the feedstock used in the gasifier/combustor system (20/22). A second aspect of the present invention relates to an apparatus and method for reducing erosion at piping bends in fluidized particulate piping systems which utilizes sand retention cavities (70) positioned to receive and retain a portion of the fluidized particulate. A third aspect of the present invention relates to an apparatus and method for facilitating the flow of sand and char fragments from a first compartment to a second compartment while minimizing the flow of gases between the first and second compartments.
摘要:
An improved system and method is provided for operating a parallel entrainment fluidized bed gasifier system. A first aspect of the present invention relates to a method for reducing ash agglomeration in a parallel entrainment fluidized bed gasifier/combustor system by adding a quantity of MgO to the feedstock used in the gasifier/combustor system. A second aspect of the present invention relates to an apparatus and method for reducing erosion at piping bends in fluidized particulate piping systems which utilizes sand retention cavities positioned to receive and retain a portion of the fluidized particulate. A third aspect of the present invention relates to an apparatus and method for facilitating the flow of sand and char fragments from a first compartment to a second compartment while minimizing the flow of gases between the first and second compartments.