US4159683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for reducing the formation of slag and soot formed from the combustion of carbonaceous waste material
Assignee: Amcol International Corp
•
Filing: 1978-03-13
•
Granted: 1979-07-03
•
Expires: 1998-03-13
Abstract
Abstract The amount of soot and slag formed during the combustion of carbonaceous waste material is appreciably reduced by combusting said waste material in the presence of at least 0.0001%, by weight, of sodium bentonite, based on the weight of carbonaceous material being combusted. The sodium bentonite may be added directly to the waste material before entering the furnace or the sodium bentonite may be added directly to the furnace.
Inventors
- 👤 John Hughes
- 👤 Peter L. Maul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:36
CPC Classifications
F; F23; F23G; F23G7/00; C; C10; C10L; C10L1/00; C10L1/10; C10L1/12; C10L1/1291; C10L10/00; C10L10/04; Y; Y02; Y02E; Y02E50/00; Y02E50/10; Y02E50/30
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
52 words
A method for reducing the amount of slag and soot formed by the combustion of carbonaceous waste material in a furnace which comprises combusting said carbonaceous waste material in said furnace in the presence of at least 0.0001%, by weight, of sodium bentonite based on the weight of said carbonaceous waste material.
Claim 2
Independent Claim
52 words
A method for reducing the amount of slag and soot formed by the combustion of carbonaceous waste material in a furnace which comprises combusting said carbonaceous waste material in said furnace in the presence of at least 0.0001%, by weight, of sodium bentonite based on the weight of said carbonaceous waste material.
Claim 3
Dependent Claim
18 words
A method according to claim 1 wherein carbonaceous waste material contains less than 50%, by weight, of water.
Claim 4
Dependent Claim
30 words
A method according to claim 1 wherein the amount of sodium bentonite is from 0.0001%, by weight, to 5%, by weight, based on the weight of said carbonaceous waste material.
Claim 5
Dependent Claim
30 words
A method according to claim 1 wherein the amount of sodium bentonite is from 0.000125%, by weight, to 0.5%, by weight, based on the weight of said carbonaceous waste material.
Claim 6
Dependent Claim
13 words
A method according to claim 1 wherein the carbonaceous waste material is bagasse.
Claim 7
Dependent Claim
16 words
A method according to claim 1 wherein the carbonaceous waste material is black liquor containing lignin.
Claim 8
Dependent Claim
13 words
A method according to claim 1 wherein the carbonaceous waste material is garbage.
Claim 9
Dependent Claim
21 words
A method according to claim 1 wherein the carbonaceous waste material contains from 5% to 10%, by weight, of inorganic salts.
Claim 10
Dependent Claim
20 words
A method according to claim 6 wherein the black liquor contains from 5% to 10%, by weight of inorganic salts.
Claim 11
Independent Claim
80 words
A method of reducing the amount of slag and soot formed by the combustion of black liquor containing lignin which comprises adding to a furnace black liquor containing more than 50%, by weight, of solids and adding sodium sulfate to the furnace, said sodium sulfate containing sodium bentonite in an amount of at least 0.0001%, by weight, based on the weight of said black liquor and combusting the black liquor in the presence of said sodium bentonite in said furnace.
Claim 12
Independent Claim
80 words
A method of reducing the amount of slag and soot formed by the combustion of black liquor containing lignin which comprises adding to a furnace black liquor containing more than 50%, by weight, of solids and adding sodium sulfate to the furnace, said sodium sulfate containing sodium bentonite in an amount of at least 0.0001%, by weight, based on the weight of said black liquor and combusting the black liquor in the presence of said sodium bentonite in said furnace.
Claim 13
Dependent Claim
19 words
A method according to claim 10 wherein the amount of sodium bentonite is between 0.000125% and 0.5%, by weight.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-02 | 1983-01-01 | 1983-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-02 | 1987-01-01 | 1987-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-02 | 1991-01-01 | 1991-07-03 | $7700.00 | Window Closed / Lapsed |