System and method to synthesize ammonia
AssigneeGas Technology Institute
InventorsRonald J. STANIS, Jeffrey A. MAYS
Life of this patent
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Abstract
A system and method for producing ammonia at high conversion rates. The system having a fluidized bed reactor with a fluidized zone with catalyst particles. The fluidized bed reactor is preferably configured to receive a continuous flow of solid sorbent particles, nitrogen, and hydrogen, with the catalyst particles being at least ten times larger than the sorbent particles. The method allows for the nitrogen and hydrogen react on a surface of the catalyst in order to generate ammonia that is adsorbed by the sorbent particles. The method extracts the adsorbed ammonia from the sorbent particles with a sorbent regenerator to product a pure ammonia product.
Claims27
A method of producing ammonia, the method comprising the following steps:
- flowing a stream of solid sorbent particles, hydrogen, and nitrogen into a reactor, wherein the reactor includes a fluidized bed of catalyst particles;
- generating ammonia by reacting the hydrogen and the nitrogen on a surface of the catalyst particles;
- and
- adsorbing the ammonia with the solid sorbent particles, wherein the catalyst particles are at least 10 times larger than the solid sorbent particles.
A system for producing ammonia, the system comprising:
- a fluidized bed reactor configured to receive a flow of solid sorbent particles, nitrogen gas, and hydrogen gas, the fluidized bed reactor including a fluidized bed of catalyst particles, wherein the nitrogen gas and hydrogen gas react on a surface of the catalyst particles generating ammonia, and wherein at least a portion of the generated ammonia is adsorbed by the sorbent particles;
- at least one of a cyclone or a filter to separate the solid sorbent particles from an unreacted nitrogen gas, an unreacted hydrogen gas and an unadsorbed ammonia;
- and
- a sorbent regenerator to release an adsorbed ammonia from he solid sorbent particles.
A method for producing ammonia, the method comprising:
- providing a continuous flow of solid sorbent particles, nitrogen gas, and hydrogen gas into a fluidized bed reactor, wherein the fluidized bed reactor includes a fluidized bed of catalyst particles and the catalyst particles are at least 10 times larger than the solid sorbent particles;
- reacting the nitrogen gas and the hydrogen gas in the presence of the catalyst particles in the fluidized bed reactor to form ammonia;
- adsorbing the ammonia with the solid sorbent particles;
- elutriating an adsorbed ammonia out of the fluidized bed reactor along with unreacted nitrogen gas, unreacted hydrogen gas, and unabsorbed ammonia;
- separating the solid sorbent particles from the unreacted nitrogen gas, the unreacted hydrogen, and the unabsorbed ammonia;
- releasing the adsorbed ammonia from the solid sorbent particles to produce a pure ammonia product;
- and
- reintroducing regenerated sorbent particles into the reactor.
Dependencies are inferred from the claim text.