Carbon black tailgas fueled reciprocating engines
AssigneeCabot Corporation
InventorsAlvin E. Toombs, Edward D. Stowell
Life of this patent
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Abstract
A system and process for utilizing tail gas from a carbon black manufacturing process as a fuel in a reciprocating engine. The tailgas is dewatered and mixed with air to form a fuel gas. The fuel gas is pressure charged and then ignited in the reciprocating engine to derive useful work.
Claims32
A process for the formation of a fuel gas and the use of that fuel gas in a reciprocating engine which comprises:
- removing water vapor from a low specific heating value gas comprising carbon monoxide, hydrogen and inert gas to increase the heating value to form a treated gas;
- mixing the treated gas with combustion air to form a treated gas;
- pressure charging the fuel gas;
- flowing the pressurized fuel gas to the engine and igniting the same;
- and
- deriving useful work from the reciprocating engine, wherein the low specific heating value gas comprises tailgas from a carbon black manufacturing process.
A process for the formation of a fuel gas from tailgas and air and the use of the fuel gas in a reciprocating engine wherein the tailgas is from a carbon black manufacturing process, the tailgas has a low heating value in a range of 50-65 Btu, and comprises carbon monoxide and hydrogen, each in an amount of between about 6.5-12%, inert gas and water vapor which process comprises:
- removing water vapor from the tailgas to increase the heating value to about 90-110 Btu to form a treated gas;
- mixing the treated gas with combustion air to form a fuel gas;
- turbocharging the fuel gas;
- flowing the turbocharged fuel gas through an intercooler;
- flowing the turbocharged fuel gas from the intercooler into the combustion chamber of the reciprocating engine;
- igniting the fuel gas to drive the reciprocating engine;
- driving the turbocharger with the exhaust gases from the engine and
- deriving useful work from the reciprocating engine.
A system for the formation of a fuel gas and the use of that fuel gas in a reciprocating engine which comprises:
- means for treating a low specific heating value gas, the gas comprising carbon monoxide, hydrogen and inert gas to increase the heating value of the gas and to form a treated gas;
- means for mixing the treated gas with combustion air to form a fuel gas;
- means for flowing the fuel gas through a pressure charger to increase the mass flow of the fuel gas, said pressure charger downstream of the means for mixing the treated gas;
- and
- means downstream of the pressure charger for introducing the turbocharged fuel gas into the engine and igniting the fuel gas to drive the engine, wherein the low specific heating value gas comprises tailgas from a carbon black manufacturing process.
A system for the formation of a fuel gas and the use of that fuel gas in a reciprocating engine wherein tailgas from a carbon black manufacturing process is used, which tailgas has a low specific heating value in a range of 50-65 Btu and comprises carbon monoxide and hydrogen each in an amount of about 6.5-12%, inert gas and water vapor which comprises:
- means for removing the water vapor from the tailgas to increase the heating value to a range of 90-100 Btu to form a treated gas;
- means for mixing the treated gas with combustion air to form a fuel gas;
- a turbocharger to increase the flow rate of the fuel gas;
- means for flowing the turbocharged fuel gas through an intercooler;
- means for flowing the turbocharged fuel gas from the intercooler into the combustion chamber of the reciprocating engine;
- means for igniting the fuel gas to drive the reciprocating engine;
- and
- means for recycling at least a portion of the exhaust gas from the engine to the turbocharger.
Dependencies are inferred from the claim text.