Patent US4390592A successfully refreshed from Google Patents.
Patent US4302236A successfully refreshed from Google Patents.
US4302236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composting system used in scrubbing gas effluvia
Assignee: Ultimate Resources Inc
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Filing: 1980-02-20
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Granted: 1981-11-24
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Expires: 2000-02-20
Abstract
Abstract Disclosed is a method for removing inorganic acid-forming constituents from a gas stream contaminated therewith (e.g. high sulfur coal effluent). Such removal is accomplished by passing the gas stream through an active composting biodegradable organic waste held under thermophilic bacteria-phase digestion conditions. Also disclosed is a comprehensive composting treatment site which desirably employs a windrowing composting technique and is suitably adapted to be operated with the gas stream scrubbing process disclosed herein.
Inventors
- 👤 Walter C. Roman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:47
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/48; B01D53/50; B01D53/74; B01D53/84; B01D53/85; C; C05; C05F; C05F17/00; C05F17/10; C05F17/15; C05F17/90; C05F17/921; C05F17/943; C05F17/964; Y; Y02; Y02A; Y02A50/00; Y02A50/20; Y02P; Y02P20/00; Y02P20/141; Y02P20/145; Y02W; Y02W30/00; Y02W30/40
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
168 words
A method for removing an inorganic acid-forming moeity from a gas stream contaminated therewith, said moeity being or capable of forming an inorganic acid in the presence of molecular oxygen and water, and for producing a compost product from substantially non-digest biodegradable organic waste comprising municipal waste and industrial waste, which comprises: a. admitting at least intermittently biodegradable organic waste into an active composting treatment site; b. maintaining said waste under thermophilic bacteria-phase digestion conditions including adequate aeration and agitation, a water content by weight of between about 30% and 70%, and a temperature of between about 30° and 70° C., for a time adequate for said waste to be substantially digested; c. passing said contaminated gas stream through said digesting waste while maintaining said digestion conditions, the contact time therebetween being adequate for substantially removing said moeity from said gas stream; d. venting a product gas stream substantially free of said moeity from said waste; and e. removing at least intermittently said compost product from said site.
Claim 2
Independent Claim
168 words
A method for removing an inorganic acid-forming moeity from a gas stream contaminated therewith, said moeity being or capable of forming an inorganic acid in the presence of molecular oxygen and water, and for producing a compost product from substantially non-digest biodegradable organic waste comprising municipal waste and industrial waste, which comprises: a. admitting at least intermittently biodegradable organic waste into an active composting treatment site; b. maintaining said waste under thermophilic bacteria-phase digestion conditions including adequate aeration and agitation, a water content by weight of between about 30% and 70%, and a temperature of between about 30° and 70° C., for a time adequate for said waste to be substantially digested; c. passing said contaminated gas stream through said digesting waste while maintaining said digestion conditions, the contact time therebetween being adequate for substantially removing said moeity from said gas stream; d. venting a product gas stream substantially free of said moeity from said waste; and e. removing at least intermittently said compost product from said site.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein said gas stream is generated from the combustion of sulfur-containing coal.
Claim 4
Dependent Claim
12 words
The method of claim 1 wherein said organic waste comprises municipal waste.
Claim 5
Dependent Claim
14 words
The method of claim 1 wherein said waste is formed into substantially parallel rows.
Claim 6
Dependent Claim
20 words
The method of claim 4 wherein said rows of waste are periodically windrowed for agitation and aeration of said waste.
Claim 7
Dependent Claim
27 words
The method of claim 4 wherein a plenum is provided under each row for conveying said contaminated gas stream to said rows for passing said stream therethrough.
Claim 8
Dependent Claim
22 words
The method of claim 6 wherein means are provided for cooling said gas stream prior to its passing through said digesting waste.
Claim 9
Dependent Claim
25 words
The method of claim 6 wherein means are provided for aerating, humidifying, or dehumidifying said gas stream prior to its passing through said digesting waste.
Claim 10
Dependent Claim
21 words
The method of claim 1 wherein the water content of said digesting waste is maintained by spraying water on said waste.
Claim 11
Dependent Claim
22 words
The method of claim 1 wherein said gas stream also contains particulates which are filtered from said stream by said digesting waste.
Claim 12
Dependent Claim
31 words
The method of claim 1 or 10 wherein said gas stream further contains organic contaminants which are removed by said digesting waste and oxidized by said thermophilic bacteria in said waste.
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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) | 1984-11-23 | 1985-05-25 | 1985-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-11-23 | 1989-05-25 | 1989-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-11-23 | 1993-05-25 | 1993-11-24 | $7700.00 | Window Closed / Lapsed |