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Process for preparing reduced alcoholic spirits and the product produced therefrom
| Details |
Inventors: Rohmann, Thomas;
Assignee: Joseph E. Seagrams and Sons, Inc. (New York, NY)
Primary Examiner: Paden; Carolyn
Assistant Examiner:
Attorney, Agent or Firm: Kane, Dalsimer, Sullivan, Kurucz, Levy, Eisele and Richard
The invention comtemplates a process for the removal of a portion of the alcohol from a distilled spirit without destroying the organoleptic properties of the spirit. The process comprises passing a barrel strength feed stream through a permeable membrane at high pressures, splitting the feed into permeate and retentate components. The entire process occurs in one pass through the permeator system. |
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DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT In the process disclosed herein, a batch of distilled spirits at barrel strength in the range of 120 to 190 proof is split into two components.
The first component is reduced with water to approximately 100 proof and maintained in a feed tank 10.
The second component is diluted with water to approximately 80 proof.
The first component is the feed stream and passes through a pipe 12 and a filter 14.
The filter 14 is composed of a cellulose material, which removes traces of barrel char which if unremoved would plug the permeator membranes to be described in detail shortly.
Cellulose is utilized because of its compatibility with whiskey.
A pump 16 feeds the feed stream through a pipe 18 into the permeator system 20, where the separation process takes place.
Each permeator is a shell containing a number of Dupont B-10 aramid hollow fiber membranes, which are selected because of separation characteristics, surface area density and pressure resilience.
The permeators may be arranged in series or in parallel or in any other combination thereof.
As a result of the high pressure required by this process, the hollow fiber membranes must be able to withstand these high pressures and not collapse when exposed to the pressurized environment Therefore, these hollow fiber membranes are sturdy and resilient; able to withstand the rigors of the environment.
An additional advantage of these membranes is their immunity to the eroding effects of a high alcohol content fluid such as whiskey.
This is essential in insuring the end products are consistent throughout the entire process.
These polymer membranes are polyaramides identified as 2-4 diaminobenzenesulfonic acid, calcium salt (2:1), polymer with 1,3-benzenediamine, 1,3-benzenedicarbonyl dichloride, and 1,4-benzenedicarbonyl dichloride.
These membranes have chloride ion rejection characteristics of greater than 90 % at 800 psig at 25.
degree.
C.
The applied pressure in the permeator system is maintained in the range of 1000-1500 psig
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