| 摘要 |
A process for scrubbing ammonia in a CO2 removal process having the steps of absorbing (204) at least some CO2 from a gas stream (202) with an ammonium carbonate solution or a mixed alkali solution, resulting in a release of >ammonia; regenerating (210) ammonium.carbonate or mixed alkali solution to produce a concentrated CO2 stream; capturing ammonia with an ammonia capture mass transfer apparatus (214). with a concentrated urea ammonium nitrate solution; adjusting the pH of the urea ammonium nitrate solution to between 4 and 6 with nitric acid; and adding urea to the urea ammonium nitrate solution, thereby producing a urea ammonium nitrate (UAN) fertilizer product ready for commercial distribution. |
