High temperature heat integration method of making carbon black
AssigneeMonolith Materials, Inc.
InventorsPeter Louis Johnson, Roscoe W. Taylor
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Abstract
A high temperature heat integration method of making carbon black. A method of making carbon black is described, including reacting a carbon black forming feedstock with hydrogen gas in a plasma reactor to produce effluent gas containing carbon black and unused hydrogen, cooling the effluent gas for further processing, and recycling the unused hydrogen back into the carbon black forming process, where the unused hydrogen gas is pre-heated in a heat exchanger to a temperature up to the reaction temperature in the reactor before being recycled into the carbon black forming process. The heat exchanger for use in such process is also described.
Claims20
A heat exchanger system comprising:
- a heat exchanger comprising a first inlet configured to receive an effluent gas stream produced from a hydrocarbon feedstock in a plasma reactor, the effluent gas stream comprising carbon particles and hydrogen;
- and
- a separator configured to separate at least a portion of the hydrogen from the effluent gas stream, thereby obtaining a separated hydrogen gas stream;
- wherein the heat exchanger comprises a second inlet configured to receive the separated hydrogen gas stream;
- wherein the heat exchanger is configured to preheat the separated hydrogen gas stream to a temperature of at least 1200° C., thereby obtaining preheated hydrogen, and comprises a high temperature stable material capable of withstanding the temperature of at least 1200° C. and incapable of withstanding an oxidant containing stream at sustained temperatures of at least 1200° C.;
- and
- wherein the heat exchanger comprises an outlet configured to provide the preheated hydrogen to the plasma reactor.
Dependencies are inferred from the claim text.