US3875314A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid smoke and method for manufacture
Assignee: B Heller and Co
•
Filing: 1973-01-31
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Granted: 1975-04-01
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Expires: 1993-01-31
Abstract
Abstract Preparation of a liquid smoke by subjecting wood particles to carbonization temperature in a carbonizing atmosphere after the wood particles have been treated with up to 100 percent of their weight with an acetic acid solution on which the acetic acid is present in a concentration of between 10-50 percent by weight and subjecting the vapors and smoke which are generated from the wood to extraction in aqueous medium, preferably at an elevated temperature above 20*C but below the boiling point temperature for the aqueous medium and preferably at a temperature within the range of 25*-75*C with the recycle of a portion of the condensate to expose the smoke and vapors to a solution thereof in the aqueous medium for extraction.
Inventors
- 👤 Hugo E Wistreich
- 👤 Hyunil Juhn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:20
CPC Classifications
A; A23; A23B; A23B4/00; A23B4/044; A23B4/052; A23B4/0526; A23B4/048; A23L; A23L27/00; A23L27/20; A23L27/27
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
73 words
IN THE PREPARATION OF LIQUID SMOKE, THE STEPS OF TREATING WOOD PARTICLES WITH ACETIC ACID UNIFORMLY TO DISTRIBUTE THE ACETIC ACID THROUGHT THE WOOD PARTICLES, HEATING THE WOOD PARTICLES TO A CARBONIZATION TEMPERATURE IN A CARBONIZING ATMOSPHERE TO REDUCE THE TREATED WOOD PARTICLES WITH THE CORRESPONDING GENERATION OF AN EXHAUST CONTAINING SMOKE PARTICLES AND VAPORS, AND THEN SUBJECTING THE EXHAUST CONTAINING EXTRACTION WITH AQUEOUS MEDIUM FOR THE REMOVAL OF SMOKE PARTICLES AND VAPORS.
Claim 2
Dependent Claim
73 words
IN THE PREPARATION OF LIQUID SMOKE, THE STEPS OF TREATING WOOD PARTICLES WITH ACETIC ACID UNIFORMLY TO DISTRIBUTE THE ACETIC ACID THROUGHT THE WOOD PARTICLES, HEATING THE WOOD PARTICLES TO A CARBONIZATION TEMPERATURE IN A CARBONIZING ATMOSPHERE TO REDUCE THE TREATED WOOD PARTICLES WITH THE CORRESPONDING GENERATION OF AN EXHAUST CONTAINING SMOKE PARTICLES AND VAPORS, AND THEN SUBJECTING THE EXHAUST CONTAINING EXTRACTION WITH AQUEOUS MEDIUM FOR THE REMOVAL OF SMOKE PARTICLES AND VAPORS.
Claim 3
Dependent Claim
35 words
The preparation of liquid smoke as claimed in claim 1 in which the wood particles are treated with 10-100 percent by weight of an acetic acid solution containing 10-50 percent by weight of acetic acid.
Claim 4
Dependent Claim
36 words
The preparation of liquid smoke as claimed in claim 2 in which the acetic acid solution is used in the wood treatment in an amount within the range of 10-50 percent by weight of the wood.
Claim 5
Dependent Claim
36 words
The prEparation of liquid smoke as claimed in claim 2 in which the acetic acid solution is used in the wood treatment in an amount within the range of 20-40 percent by weight of the wood.
Claim 6
Dependent Claim
24 words
The preparation of liquid smoke as claimed in claim 1 in which the acetic acid solution contains 15-40 percent by weight of acetic acid.
Claim 7
Dependent Claim
31 words
The preparation of liquid smoke as claimed in claim 1 which includes the step of removing tars and solids from the exhaust prior to subjecting the exhaust to the extraction step.
Claim 8
Dependent Claim
35 words
The preparation of liquid smoke as claimed in claim 1 in which the exhaust is subjected to countercurrent flow with aqueous condensate through a contact tower for extraction of smoke and vapors from the exhaust.
Claim 9
Dependent Claim
47 words
The preparation of liquid smoke as claimed in claim 7 which includes the step of passing the gas effluent from the extraction step through a low temperature condenser to remove condensable vapors and then returning the condensate with the aqueous medium for countercurrent flow with the exhaust.
Claim 10
Dependent Claim
50 words
The preparation of a liquid smoke as claimed in claim 7 which includes the step of collecting the aqueous medium with the extract from the exhaust upon passage from the contact tower, and recycling a portion of the condensate back through the contact tower for countercurrent flow with the exhaust.
Claim 11
Dependent Claim
24 words
The preparation of liquid smoke as claimed in claim 9 in which 10-90 percent of the collected condensate is recycled to the extraction step.
Claim 12
Dependent Claim
24 words
The preparation of liquid smoke as claimed in claim 9 in which 30-80 percent of the collected condensate is recycled to the extraction step.
Claim 13
Dependent Claim
37 words
The preparation of liquid smoke as claimed in claim 1 which includes the step of maintaining the temperature of the extraction within the range of above 20*C to below the boiling point temperature for the aqueous medium.
Claim 14
Dependent Claim
22 words
The preparation of liquid smoke as claimed in claim 12 in which the temperature of extraction is within the range of 25*-70*C.
Claim 15
Dependent Claim
22 words
The preparation of liquid smoke as claimed in claim 12 in which the temperature of extraction is within the range of 25*-45*C.
Claim 16
Dependent Claim
40 words
The preparation of liquid smoke as claimed in claim 12 in which the temperature of extraction is maintained by recycling a portion of the aqueous medium extract to the extraction zone and preheating the recycle to the desired elevated temperature.
Claim 17
Dependent Claim
34 words
The preparation of liquid smoke as claimed in claim 1 in which the wood particles are added within an enclosed space for degradation in a gaseous stream containing insufficient amount of air for combustion.
References Cited (Backward Citations)
US3117007A
Cited
US3523802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |