METHODS OF PRODUCING HYDROGEN AND SOLID CARBON

摘要

A method for producing hydrogen, includes heating a process feed gas stream, flowing the process feed gas stream into a first reaction zone, flowing the intermediate gas stream into a second reaction zone, removing the solid carbon product from the second reaction zone, removing the tail gas stream from the second reaction zone, and removing hydrogen from the tail gas stream. The process gas stream includes methane and steam. The first reaction zone contains a first catalyst, and at least a portion of the process feed gas stream is converted into an intermediate gas stream in the first reaction zone. The second reaction zone contains a second catalyst, and at least a portion of the intermediate gas stream is converted into a tail gas stream and a solid carbon product in the second reaction zone.

主权项

1. A method for producing hydrogen, the method comprising:
heating a feed gas comprising methane and steam; flowing the feed gas into a first reaction zone containing a first catalyst, wherein at least a portion of the feed gas is converted into an intermediate gas; flowing the intermediate gas into a second reaction zone containing a second catalyst, wherein at least a portion of the intermediate gas is converted into a tail gas and solid carbon and water; removing the solid carbon from the second reaction zone; removing the tail gas from the second reaction zone; and removing hydrogen from the tail gas to form a hydrogen gas stream and a hydrogen-depleted tail gas stream.