Apparatus for mixing at least partially immiscible liquids

• US 5,681,531 A
• Filed: 11/03/1995
• Issued: 10/28/1997
• Est. Priority Date: 04/04/1991
• Status: Expired due to Fees

• Current Assignee: The Dow Chemical Company (Dow, Inc.)
• Original Assignee: The Dow Chemical Company (Dow, Inc.)
• Inventors: LaPack, Mark A., Tou, James C., Nestrick, Terry J.
• Primary Examiner(s): Warden, Jill
• Assistant Examiner(s): WALLENHORST, MAUREEN
• Application Number:
  US08/552,889
• Time in Patent Office: 725 Days
• Field of Search: 422/62, 422/68.1, 422/81, 436/52, 436/54, 436/55, 436/178
• US Class Current: 422/81
• CPC Class Codes: C02F 1/008 Control or steering systems not provided for elsewhere in subclass C02F
• CPC Class Codes: G01N 2035/00465 Separating and mixing arrangements
• CPC Class Codes: G01N 33/1826 Organic contamination in water
• CPC Class Codes: G01N 35/1097 characterised by the valves valves in general F16K
• CPC Class Codes: Y10T 436/117497 with a continuously flowing sample or carrier stream
• CPC Class Codes: Y10T 436/119163 with aspirator of claimed structure
• CPC Class Codes: Y10T 436/12 Condition responsive control
• CPC Class Codes: Y10T 436/255 including use of a solid sorbent, semipermeable membrane, or liquid extraction

Abstract

Apparatus for optimizing a treatment for removing organic substances from a chemical process stream wherein known quantities and kinds of organic or other compounds are injected into and dissolved in the stream prior to treatment thereof. Samples of the compounds are extracted from the stream before and after treatment thereof and compared with one another to determine the efficiency of the treatment. The injecting apparatus is one that enables a substance that is at least partially immiscible with the liquid of the stream to be injected into the stream at a velocity sufficiently great to cause adequate dissolution of the substance in the stream.

Claims

1. Apparatus for on-line analysis of a fluid stream flowing to, through, and from a treatment zone, said apparatus comprising means for delivering said stream to said zone;

means for dispensing and dispersing into said stream upstream from said zone a known compound from a supply thereof, said compound including a substance that is at least partially immiscible with said stream;

reagent means in said zone for treating said stream to remove said compound from said stream;

means for sampling said stream downstream from said zone to separate therefrom an extract containing at least a portion of any of said compound remaining in said stream following treatment in said zone;

means for analyzing the extract to detect the presence of said compound therein; and

means for delivering the extract to said analyzing means.

2. Apparatus according to claim 1 wherein said dispensing and dispersing means accelerates said compound to a velocity sufficient to partially dissolve said substance in said fluid stream.

3. Apparatus according to claim 2 wherein said dispensing and dispersing means accelerates said compound to a velocity up to about 400 times the rate at which said compound is dispensed from said supply.

4. Apparatus according to claim 2 wherein said dispensing and dispersing means comprises a conduit having a bore of predetermined diameter in communication with said supply, and a tube accommodated in said bore, said tube having a bore through which said compound must pass and whose diameter is less than that of the bore of said conduit.

5. Apparatus according to claim 4 wherein said supply comprises a hollow barrel in communication with said conduit and a displaceable plunger in said barrel for dispensing said compound from said barrel into said conduit.

6. Apparatus according to claim 5 including means for displacing said plunger at a selected velocity.