Waste water process with scrubber
OwnerScott A. Bierle, Richard Neylon +1inventors
InventorsScott A. Bierle, Richard Neylon, Allen D. Bierle
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Abstract
An apparatus and method for treating waste products produced by chemical processing plants. Steam stripping waste sour water results in a vapor including ammonia and hydrogen sulfide. A scrubber unit including a quenching column produces a concentrated ammonium sulfide solution. The concentrated ammonium sulfide allows for more efficient transfer from more than one refinery to a centralized purification facility for further processing.
Claims19
A method for treating waste products produced by chemical processing plants, the method comprising:
- obtaining from the chemical processing plant a waste liquid including ammonia and hydrogen sulfide;
- steam stripping the waste liquid to produce a vapor stream including water, the ammonia and the hydrogen sulfide;
- reacting the ammonia and the hydrogen sulfide in the vapor stream to provide ammonium sulfide;
- and
- collecting the ammonium sulfide in the vapor stream in a concentrated ammonium sulfide solution.
A method for treating waste products produced by chemical processing plants, the method comprising:
- obtaining from the chemical processing plant a waste liquid including ammonia and hydrogen sulfide;
- producing a vapor stream including water, the ammonia and the hydrogen sulfide from the waste liquid including the ammonia and the hydrogen sulfide;
- cooling the vapor stream;
- reacting the ammonia and the hydrogen sulfide in the vapor stream to obtain ammonium sulfide;
- collecting the ammonium sulfide in the vapor stream in a concentrated ammonium sulfide solution;
- and
- collecting the ammonium sulfide solution.
A method for treating waste products produced by chemical processing plants, the method comprising:
- providing a packed bed column, the packed bed column comprising a first stage including a first heat exchanger, a second stage including a second heat exchanger, and a third stage for introducing water into the column;
- introducing a vapor stream including water, ammonia and hydrogen sulfide into the packed bed column;
- cooling the vapor stream to a first temperature in the first stage of the column;
- cooling the vapor stream to a second temperature lower than the first temperature in the second stage of the column;
- introducing water into the third stage of the column;
- reacting the ammonia and the hydrogen sulfide in the vapor stream to obtain ammonium sulfide and collecting the ammonium sulfide in the vapor stream in a concentrated ammonium sulfide solution;
- and
- collecting the ammonium sulfide solution.
Dependencies are inferred from the claim text.