Patent US3837272A successfully refreshed from Google Patents.
US3837272A
Expired / Lapsed
US
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Meal drying pollution control apparatus
Assignee: Star Kist Foods Inc
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Filing: 1973-06-14
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Granted: 1974-09-24
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Expires: 1993-06-14
Abstract
Abstract Meal drying pollution control apparatus including an incinerator formed with a retention chamber having a burner at the inlet thereof and joining on its downstream end with a rotary dryer. Connected with the downstream end of the rotary dryer is a recirculation conduit which bifurcates into a reheat conduit connected with the upstream end of the retention chamber adjacent the burner and a residual heat conduit connecting with the downstream end of such a chimney is connected with the retention chamber downstream of the reheat conduit for exhausting incinerated exhaust to the atmosphere. The burner is controlled to maintain the recirculated gases entering from the reheat conduit above a predetermined temperature for a selected length of time to thereby incinerate substantially all the impurities therein so the incinerated gases may be exhausted to the atmosphere without substantial pollution thereof. A temperature sensor is located at the outlet to the dryer and controls valves disposed in the residual and reheat conduits to balance flow between such conduits to maintain the desired temperature in such dryer to provide for the desired drying temperature for meal run through such dryer.
Inventors
- 👤 V Evich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:22
CPC Classifications
F; F26; F26B; F26B17/00; F26B17/10; F26B17/106; F26B23/00; F26B23/02; F26B23/022; F26B25/00; F26B25/005
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
278 words
Combination drying and pollution control apparatus for drying granular vegetable matter comprising: an elongated dryer for receiving granular vegetable matter and formed with a drying chamber having an inlet at one extremity and an outlet at the opposite extremity; an incinerator adjacent said inlet and formed with an elongated retention chamber leading toward said inlet; a burner disposed in the end of said incinerator remote from said dryer inlet; fuel control means for controlling fuel to said burner; an exhaust chimney leading from the downstream end of said retention chamber; recirculation conduit means connected with said outlet and formed with a reheat conduit connected with said incinerator adjacent said burner at the upstream end of said retention chamber and a residual heat conduit connected with said incinerator downstream of said reheat conduit; a blower in said recirculation means for blowing gases through said recirculation means; reheat and residual heat valve means disposed in said respective reheat and residual conduits for controlling flow therethrough; a temperature sensor adjacent said outlet for sensing the temperature of vapor expelled from said outlet; dryer temperature control means connected with said valve means and operative in response to a predetermined temperature sensed by said sensor to move said reheat valve means toward its open position and said residual heat valve means toward its closed position, said control means being further responsive to a selected temperature above said predetermined temperature to shift said reheat valve toward its closed position and said residual valve means toward its open position whereby the recirculation of vapor is balanced between said reheat and residual conduits to maintain the temperature at said sensor between said predetermined and selected temperatures.
Claim 2
Dependent Claim
278 words
Combination drying and pollution control apparatus for drying granular vegetable matter comprising: an elongated dryer for receiving granular vegetable matter and formed with a drying chamber having an inlet at one extremity and an outlet at the opposite extremity; an incinerator adjacent said inlet and formed with an elongated retention chamber leading toward said inlet; a burner disposed in the end of said incinerator remote from said dryer inlet; fuel control means for controlling fuel to said burner; an exhaust chimney leading from the downstream end of said retention chamber; recirculation conduit means connected with said outlet and formed with a reheat conduit connected with said incinerator adjacent said burner at the upstream end of said retention chamber and a residual heat conduit connected with said incinerator downstream of said reheat conduit; a blower in said recirculation means for blowing gases through said recirculation means; reheat and residual heat valve means disposed in said respective reheat and residual conduits for controlling flow therethrough; a temperature sensor adjacent said outlet for sensing the temperature of vapor expelled from said outlet; dryer temperature control means connected with said valve means and operative in response to a predetermined temperature sensed by said sensor to move said reheat valve means toward its open position and said residual heat valve means toward its closed position, said control means being further responsive to a selected temperature above said predetermined temperature to shift said reheat valve toward its closed position and said residual valve means toward its open position whereby the recirculation of vapor is balanced between said reheat and residual conduits to maintain the temperature at said sensor between said predetermined and selected temperatures.
Claim 3
Dependent Claim
55 words
Combination drying and pollution control apparatus as set forth in claim 1 wherein: said dryer includes a rotary tube forming said dryer chamber; rotary sealing means at said inlet and outlet forming a seal between said incinerator and tube and between said tube and recirculation conduit means; and drive means for rotating said drying tube.
Claim 4
Dependent Claim
64 words
Combination drying and pollution control apparatus as set forth in claim 1 that includes: a chimmey temperature sensor disposed in said chimmey; and said fuel control means is connected with said chimney temperature sensor and is responsive to a predetermined temperature at the high and low end of a selected chimney temperature range to reduce and increase, respectively, the fuel rate to said burner.
Claim 5
Dependent Claim
31 words
Combination drying and pollution control apparatus as set forth in claim 1 that includes: a separator in said recirculation conduit means for separating the meal from gases flowing through said dryer.
Claim 6
Dependent Claim
25 words
Combination drying and pollution control apparatus as set forth in claim 1 that includes: a scrubber in said recirculation conduit means for scrubbing said vapor.
Claim 7
Dependent Claim
62 words
Combination drying and pollution control apparatus as set forth in claim 1 that includes: a cooker for cooking said matter; conveying means extending between said cooker and dryer for convEying said cooked matter to said dryer; shroud means for collecting the vapors from said cooker; and conduit means connected between said shroud means and dryer for directing collected vapors to said dryer.
Claim 8
Dependent Claim
78 words
Combination drying and pollution control apparatus as set forth in claim 1 wherein: said incinerator includes an open ended inner shell forming said retention chamber and an exterior shell cooperating with said inner shell to form a peripheral counter flow chamber; and said reheat conduit connects with said outer shell intermediate the length of said interior shell for introducing the recirculating vapor for counter flow in said counter flow chamber to the upstream end of said inner shell.
Claim 9
Dependent Claim
151 words
Combination drying and pollution control apparatus for drying granular vegetable matter comprising: a cooker for cooking meal; cover means covering said cooker to collect the vapors therefrom; an elongated dryer formed with a drying chamber having an inlet on one end and an outlet on the opposite end; conveying means for conveying cooked matter from said cooker to the inlet of said dryer; an incinerator adjacent said inlet and including burner means for heating gases released from said matter to a selected temperature; an exhaust chimney leading from the intermediate portion of said incinerator; a temperature sensor for sensing the temperator of said gases; and fuel control means connected with said temperature sensor and responsive to predetermined temperatures at the high and low end of a selected temperature range to reduce and increase, respectively, the fuel rate to said burner to maintain the temperature in said chimney within said selected range.
Claim 10
Dependent Claim
151 words
Combination drying and pollution control apparatus for drying granular vegetable matter comprising: a cooker for cooking meal; cover means covering said cooker to collect the vapors therefrom; an elongated dryer formed with a drying chamber having an inlet on one end and an outlet on the opposite end; conveying means for conveying cooked matter from said cooker to the inlet of said dryer; an incinerator adjacent said inlet and including burner means for heating gases released from said matter to a selected temperature; an exhaust chimney leading from the intermediate portion of said incinerator; a temperature sensor for sensing the temperator of said gases; and fuel control means connected with said temperature sensor and responsive to predetermined temperatures at the high and low end of a selected temperature range to reduce and increase, respectively, the fuel rate to said burner to maintain the temperature in said chimney within said selected range.
Claim 11
Dependent Claim
53 words
Combination drying and pollution control apparatus according to claim 8 wherein: said dryer includes a rotary tube forming said drying chamber; rotary sealing means at said inlet and outlet forming a seal between said incinerator and tube and between said tube and recirculation conduit means; and drive means for rotating said drying tube.
Claim 12
Dependent Claim
95 words
Combination drying and pollution control apparatus according to claim 8 that includes: recirculation conduit means connected between the outlet of said dryer and said incinerator; a dryer temperature sensor for sensing the temperature of gases from said dryer; and recirculation control means in said conduit means and connected with said dryer temperature sensor, said control means being responsive to the upper and lower limits of a temperature range sensed by said dryer sensor to decrease and increase, respectively, the rate of recirculation through said conduit means, for controlling recirculation of gases in said recirculation conduit.
Claim 13
Dependent Claim
48 words
Combination drying and pollution control apparatus according to claim 1 wherein: said burner includes open flame means with a primary air inlet disposed adjacent thereto; and said apparatus includes covered material processing means and fumes collecting conduit means leading from said processing means to said primary air inlet.
Claim 14
Dependent Claim
54 words
Combination drying and pollution control apparatus according to claim 1 that includes: covered fish press means; covered conveyor means leading from said press means to said dryer; and fumes collecting conduit means leading from said press means and conveyor means to said burner for incineration of fumes released in said press and conveyor means.
Claim 15
Dependent Claim
33 words
Combination drying and pollution control apparatus according to claim 11 that includes: fumes blower means in said fumes collecting conduit for drawing said fumes through said collecting conduit for introduction to said burner.
Claim 16
Dependent Claim
90 words
Combination drying and pollution control apparatus according to claim 13 that includes: energy control means for controlling energy to said burner and responsive to a change in magnitude in one direction of a control signal to progressively increase the energy to said burner; and temperature seNsing means in said dryer and connected with said energy control means and further responsive to decreases in temperature below a predetermined temperature to produce a change in magnitude in said one direction of said control signal to correspondingly increase the energy to said burner.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-23 | 1978-03-25 | 1978-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-23 | 1982-03-25 | 1982-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-23 | 1986-03-25 | 1986-09-24 | $7700.00 | Window Closed / Lapsed |