Power plant for producing energy and ammonia

Patent metadata

Field	Value
Publication number	US-10239762-B2
Application number	US-201515511261-A
Country	US
Kind code	B2
Filing date	Sep 11, 2015
Priority date	Sep 24, 2014
Publication date	Mar 26, 2019
Grant date	Mar 26, 2019

Abstract

The present disclosure relates to power plants. The teachings thereof may be embodied in processes for producing ammonia and energy, e.g., a method for producing ammonia and energy comprising: spraying or atomizing an electropositive metal; burning the metal with a reaction gas; mixing the reacted mixture with water; separating the mixture into (a) solid and liquid constituents and (b) gaseous constituents; at least partially converting energy of the solid and liquid constituents and of the gaseous constituents; and separating ammonia from the gaseous constituents. Mixing the reacted mixture may include spraying or atomizing the water or the aqueous solution or the suspension of the hydroxide of the electropositive metal into the reacted mixture.

First claim

What is claimed is:

1. A method for producing ammonia and energy, the method comprising:
spraying or atomizing an electropositive metal selected from among alkali metals, alkaline earth metals, aluminum and zinc and mixtures and/or alloys thereof;
burning the electropositive metal with a reaction gas comprising nitrogen;
mixing the reacted mixture of reaction gas and electropositive metal with water or an aqueous solution or suspension of a hydroxide of the electropositive metal;
separating the mixture into (a) solid and liquid constituents and (b) gaseous constituents including ammonia;
at least partially removing thermal energy of the solid and liquid constituents with a heat exchanger and at least partially removing kinetic energy of the gaseous constituents with a turbine and a generator; and
separating the ammonia from the gaseous constituents;
wherein mixing the reacted mixture of reaction gas and electropositive metal with water or an aqueous solution or suspension of a hydroxide of the electro-positive metal includes spraying or atomizing the water or the aqueous solution or the suspension of the hydroxide of the electropositive metal into the reacted mixture.

2. The method as claimed in claim 1 , wherein separating the mixture comprises using a cyclone, filter plates, or electrofilters.

3. The method as claimed in claim 1 , wherein the molar ratio of water to nitride formed in the combustion of reaction gas and electropositive metal is greater than 2:1.

4. The method as claimed in claim 1 , further comprising burning the electropositive metal with an excess of nitrogen.

5. The method as claimed in claim 4 , further comprising separating excess nitrogen from the gaseous constituents after combustion and recirculating the excess nitrogen for additional combustion.

Assignees

• Siemens Ag

Inventors

• Eckert Helmut
• Schmid Guenter
• Taroata Dan

Classifications

• B01J2208/00902

  Nozzle-type feeding elements · CPC title

• B01J19/245

  placed in series · CPC title

• F05D2220/62

  with energy recovery turbines · CPC title

• C01C1/026 Primary

  Preparation of ammonia from inorganic compounds · CPC title

• F01D15/10

  Adaptations for driving, or combinations with, electric generators · CPC title