초록 ▼

A method and apparatus are disclosed for the utilization of energy in gas of low heating value. The low heating value gas is preheated, mixed with an amount of air that will provide oxygen in an amount that will limit the maximum temperature rise in a catalytic combustion chamber to avoid excessive

A method and apparatus are disclosed for the utilization of energy in gas of low heating value. The low heating value gas is preheated, mixed with an amount of air that will provide oxygen in an amount that will limit the maximum temperature rise in a catalytic combustion chamber to avoid excessive temperatures, and delivered into the catalytic combustion chamber at a temperature exceeding about 400°F. that will cause ignition of the combustibles on contact with the catalyst. In a preferred embodiment, combustion is accomplished in two combustion chambers connected in series with a heat exchanger between the combustion chambers for cooling the combustion products discharged from the first combustion chamber before they are delivered to the next combustion chamber. Approximately fifty percent of the total combustion air is mixed with the combustible gas before delivery into each of the combustion chambers. Effluent from the second combustion chamber is used to drive a gas turbine for generation of power or direct driving of air compressors.

대표청구항 ▼

A method for the production of power from LHV gases from an in-situ combustion process for the recovery of oil from a subsurface deposit comprising: (a) preheating the LHV gas to a temperature such that on mixing with air as set forth in step (b) the mixture will have a temperature of 400°F. to 800°

A method for the production of power from LHV gases from an in-situ combustion process for the recovery of oil from a subsurface deposit comprising: (a) preheating the LHV gas to a temperature such that on mixing with air as set forth in step (b) the mixture will have a temperature of 400°F. to 800°F.; (b) mixing the preheated LHV gas from step (a) with air in an amount such that the air is less than the stoichiometric equivalent of the combustibles in the LHV gas and insufficient to result in a rise in temperature in step (c) that will damage the oxidation catalyst; (c) passing the mixture of air and LHV gas in contact with an oxidation catalyst to oxidize combustibles in the LHV gas and thereby produce hot combustion products; and (d) generating power from the hot combustion products.