04752452 is referenced by 5 patents and cites 15 patents.

The invention is a process and apparatus useful for preparing an aqueous ammonia solution at a temperature below the boiling point thereof by single stage dilution of anhydrous ammonia with water. In the invention, an anhydrous ammonia fluid comprising ammonia vapor is mixed with water to provide an aqueous ammonia fluid at a first temperature above the boiling point of said aqueous ammonia fluid, the aqueous ammonia fluid is cooled to a second temperature above the boiling point of said aqueous ammonia fluid, and the cooled aqueous ammonia fluid is then indirectly contacted with liquid anhydrous ammonia to further cool said aqueous ammonia fluid to a temperature below its boiling point and thereby heat the liquid anhydrous ammonia to vaporize at least a portion thereof. The heated anhydrous ammonia fluid is utilized in the process of this invention to provide the aqueous ammonia fluid. An apparatus for carrying out the above process is also described, including a novel mixing nozzle for use in mixing the anydrous ammonia fluid with water to provide an aqueous ammonia fluid at a first temperature above the boiling point of said aqueous ammonia fluid.

Title
Aqueous ammonia process and mixing apparatus therefor
Application Number
6/474003
Publication Number
4752452
Application Date
March 10, 1983
Publication Date
June 21, 1988
Inventor
Perry L Murata
Torrance
CA, US
Bruce A Harbolt
Northridge
CA, US
Agent
D Sandford
G Wirzbicki
Howard R Lambert
Assignee
Union Oil Company of California
CA, US
IPC
C01C 1/02
B05B 1/14
View Original Source