US3863846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Application for the benefaction of coal utilizing high volatile liquids as chemical comminutants
Assignee: Chemical Comminutions International Inc
•
Filing: 1972-08-22
•
Granted: 1975-02-04
•
Expires: 1992-08-22
Abstract
Abstract Mined coal of all grades contains numerous solid impurities such as slate, shale, and iron pyrites. The treatment of such coal with certain high vapor pressure chemical comminutants such as liquid anhydrous ammonia at - 33*C renders the coal into smaller particle sizes and separates it from its inherent impurities by means of the apparatus of the invention which includes a reactor receiving the coal to which is applied a chemical agent such as liquid anhydrous ammonia, and which separates the impurities from the coal and recovers the ammonia from both for reuse in the apparatus.
Inventors
- 👤 Jr Douglas V Keller
- 👤 Clay D Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:05
CPC Classifications
B; B02; B02C; B02C19/00; B02C19/18; B02C19/0056; Y; Y10; Y10S; Y10S241/00; Y10S241/37
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
23 words
The invention according to claim 1 wherein said reactor includes means for applying the liquid comminutant at a pressure above that of atmospheric.
Claim 2
Dependent Claim
15 words
The invention according to claim 1 wherein said coal is run of the mine coal.
Claim 3
Dependent Claim
97 words
The invention according to claim 1 wherein said liquid chemical comminutant has gaseous and liquid phases, the reactor is connected to means recovering The liquid chemical comminutant in its gaseous and liquid phases, means processing the gaseous phase into the liquid phase, means feeding the liquid phase to the reactor to form a closed loop, and a continuous rotary filter-dryer means also disposed in said loop and is connected to the reactor as a second stage to provide removal of all particle sizes larger than 1.5mm essentially without uncontrolled loss of the liquid in said closed loop.
Claim 4
Dependent Claim
32 words
The invention of claim 1 in which the reactor has an outlet for the separated coal connected to a continuous rotary filter-dryer means to separate undersized particles and liquid and oversized particles.
Claim 5
Dependent Claim
29 words
The invention according to claim 1 wherein the reactor has an outlet for the separated coal connected to a ganged continuous belt filter-dryer means to provide particle size separation.
Claim 6
Dependent Claim
39 words
The invention according to claim 1 in which the liquid chemical comminutant in the reactor is a high vapor pressure chemical comminutant and recovering means provides essentially total recovery of the high vapor pressure chemical comminutant throughout the apparatus.
Claim 7
Dependent Claim
18 words
The invention according to claim 1 in which said reactor has an outlet for the separated impurity materials.
Claim 8
Dependent Claim
43 words
The invention according to claim 3 in which a continuous belt rotary filter-dryer means is connected to receive the reactants from the reactor for separation of the undersized particles and liquid and filter bed drying of the oversized particles in one continuous operation.
Claim 9
Dependent Claim
25 words
The invention according to claim 2 wherein said reactor has an outlet connected to a ganged continuous belt filter means to provide particle size separation.
Claim 10
Dependent Claim
28 words
The invention according to claim 7 wherein said reactor has an outlet connected to a ganged continuous belt dryer means and includes means to provide particle size separation.
Claim 11
Dependent Claim
39 words
The invention according to claim 4 wherein the liquid chemical comminutant in the reactor is a high vapor pressure chemical comminutant and the recovering means provides essentially total recovery of the high vapor pressure chemical comminutant throughout the apparatus.
Claim 12
Dependent Claim
39 words
The invention according to claim 5 wherein the liquid chemical comminutant in the reactor is a high vapor pressure chemical comminutant and the recovering means provides essentially total recovery of the high vapor pressure chemical comminutant throughout the apparatus.
Claim 13
Dependent Claim
18 words
The invention according to claim 4 in which said reactor has an outlet for the separated impurity materials.
Claim 14
Dependent Claim
18 words
The invention according to claim 5 in which said reactor has an outlet for the separated impurity materials.
Claim 15
Dependent Claim
45 words
Method for comminuting coal comprising: reacting coal essentially submerged in a liquid chemical comminutant in a reactor to produce reactants such as impurity materials and product coal, applying a small variational mechanical stress on the coal and (2) partially separating the reactants from the coal.
Claim 16
Dependent Claim
26 words
The invention according to claim 16 wherein said step of reacting includes processing the coal with the liquid comminutant at a pressure above that of atmospheric.
Claim 17
Dependent Claim
28 words
The invention according to claim 16 wherein said coal in the reactor is run of the mine coal from which supernatant water in the coal has been removed.
Claim 18
Dependent Claim
41 words
The invention according to claim 16 wherein subsequent to the step of partially separating reactants from the coal is the step of removing all the particle sizes larger than 1.5mm without uncontrolled loss of the liquid by a rotary filter-dryer means.
Claim 19
Dependent Claim
39 words
The invention of claim 17 which includes the step of receiving the reactants from the reactor by a continuous belt rotary filter-dryer to separate the undersized particles and liquid and drying of the over-sized particles in one continuous operation.
Claim 20
Dependent Claim
23 words
The invention according to claim 16 wherein is the further step of separating and drying by use of a ganged continuous belt means.
Claim 21
Dependent Claim
36 words
The invention according to claim 16 whereIn the liquid chemical comminutant in the reactor is a high vapor pressure chemical comminutant, and a recovering step for essentially total recovery of the high vapor pressure chemical comminutant.
Claim 22
Dependent Claim
27 words
The invention according to claim 16 in which after the step of reacting is the further step of recovering of impurity materialo naturally found in said coal.
Claim 23
Dependent Claim
24 words
The invention according to claim 18 which includes the step of separating of the undersized particles and liquid, and drying of the oversized particles.
Claim 24
Dependent Claim
23 words
The invention according to claim 22 wherein is the further step of separating and filter-drying by use of a ganged continuous belt means.
Claim 25
Dependent Claim
23 words
The invention according to claim 23 wherein is the further step of separating and filter-drying by use of a ganged continuous belt means.
Claim 26
Dependent Claim
36 words
The invention according to claim 19 wherein the liquid chemical comminutant in the reactor is a high vapor pressure chemical comminutant and a recovering step for essentially total recovery of the high vapor pressure chemical comminutant.
Claim 27
Dependent Claim
36 words
The invention according to claim 20 wherein the liquid chemical comminutant in the reactor is a high vapor pressure chemical comminutant and a recovering step for essentially total recovery of the high vapor pressure chemical comminutant.
Claim 28
Dependent Claim
22 words
The invention according to claim 19 in which after the step of reacting is the further step of recovering of impurity materials.
Claim 29
Dependent Claim
22 words
The invention according to claim 20 in which after the step of reacting is the further step of recovering of impurity materials.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |