Patent US4358629A successfully refreshed from Google Patents.
US4358629A
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US
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Method of producing acetylene from coal
Assignee: AVCO RESEARCH LABORATORY INCORPORATED A CORP OF
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Filing: 1980-08-18
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Granted: 1982-11-09
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Expires: 2000-08-18
Abstract
Abstract This invention relates to the conversion by way of decomposing a solid carbonaceous matter to acetylene. Specifically, the invention teaches selecting the operating conditions which will produce high yield at low cost. Specific values of heat and enthalpy for the carbonaceous matter and the gas are proposed in combination with specific particle sizes and reaction time. All of the foregoing contribute to producing acetylene at a commercially competitive cost.
Inventors
- 👤 Chi S. Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:42
CPC Classifications
C; C07; C07C; C07C1/00
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
104 words
A method of producing acetylene from coal by decomposing coal in hydrogen: supplying coal particles and hydrogen at a predetermined controlled rate to a reaction zone; heating said coal and hydrogen so that the decomposition reaction takes place under conditions embraced by the area defined by the x, y coordinates (1.0, 2.5) (2.0, 2.5) (5.0, 1.5) (5.0, 0.6) (2.0, 0.6) (1.0, 1.25) where x coordinate is the specific gas enthalpy in Kw/SCFM H 2 and the y coordinate is the specific solid enthalpy in Kw/lb. carbon per Hr to produce acetylene; and removing said acetylene from the reaction zone to prevent it from decomposing.
Claim 2
Independent Claim
104 words
A method of producing acetylene from coal by decomposing coal in hydrogen: supplying coal particles and hydrogen at a predetermined controlled rate to a reaction zone; heating said coal and hydrogen so that the decomposition reaction takes place under conditions embraced by the area defined by the x, y coordinates (1.0, 2.5) (2.0, 2.5) (5.0, 1.5) (5.0, 0.6) (2.0, 0.6) (1.0, 1.25) where x coordinate is the specific gas enthalpy in Kw/SCFM H 2 and the y coordinate is the specific solid enthalpy in Kw/lb. carbon per Hr to produce acetylene; and removing said acetylene from the reaction zone to prevent it from decomposing.
Claim 3
Independent Claim
110 words
A method of producing acetylene from coal by decomposing coal in hydrogen; supplying coal particles having a maximum diameter of 190 microns and hydrogen at a predetermined controlled rate to a reaction zone; heating said coal and hydrogen so that the decomposition reaction takes place under conditions embraced by the area defined by the x, y coordinates (1.0, 2.5) (2.0, 2.5) (5.0, 1.5) (5.0, 0.6) (2.0, 0.6) (1.0, 1.25) where x coordinate is the specific gas enthalpy in Kw/SCFM H 2 and the y coordinate is the specific solid enthalpy in Kw/lb carbon Hr to produce acetylene; and removing said acetylene from the reaction zone to prevent it from decomposing.
Claim 4
Independent Claim
110 words
A method of producing acetylene from coal by decomposing coal in hydrogen; supplying coal particles having a maximum diameter of 190 microns and hydrogen at a predetermined controlled rate to a reaction zone; heating said coal and hydrogen so that the decomposition reaction takes place under conditions embraced by the area defined by the x, y coordinates (1.0, 2.5) (2.0, 2.5) (5.0, 1.5) (5.0, 0.6) (2.0, 0.6) (1.0, 1.25) where x coordinate is the specific gas enthalpy in Kw/SCFM H 2 and the y coordinate is the specific solid enthalpy in Kw/lb carbon Hr to produce acetylene; and removing said acetylene from the reaction zone to prevent it from decomposing.
Claim 5
Dependent Claim
37 words
A process as defined in claim 2 where the preferred coal particle size is 25 to 50 microns and the preferred residence time of the coal and its decomposition products in the reaction zone is 0.5-5 milliseconds.
Claim 6
Dependent Claim
23 words
A process as defined in claim 3 where the solid particles are coal having an ASTM proximate volatile analysis of at least 18%.
Claim 7
Dependent Claim
17 words
A process as defined in claim 3 where the source of heat is an electric arc reactor.
Claim 8
Dependent Claim
33 words
A process as defined in claim 3 where the solid particles are coal having an ASTM proximate volatile analysis of at least 18% and the source of heat is an electric arc reactor.
Claim 9
Dependent Claim
27 words
A process as defined in claim 2 where the residence time of the coal and its decomposition products in the reaction zone is less than 10 milliseconds.
Claim 10
Independent Claim
111 words
A method of producing acetylene from solid carbonaceous matter by decomposing the solid carbonaceous matter in gas: supplying solid carbonaceous matter particles and gas at a predetermined controlled rate to a reaction zone; heating said solid carbonaceous matter and gas so that the decomposition reaction takes place under conditions embraced by the area defined by the x, y coordinates (1.0, 2.5) (2.0, 2.5) (5.0, 1.5) (5.0, 0.6) (2.0, 0.6) (1.0, 1.25) where x coordinate is the specific gas enthalpy in Kw/SCFM gas and the y coordinate is the specific solid enthalpy in Kw/lb. carbon Hr to produce acetylene; and removing said acetylene from the reaction zone to prevent it from decomposing.
Claim 11
Independent Claim
111 words
A method of producing acetylene from solid carbonaceous matter by decomposing the solid carbonaceous matter in gas: supplying solid carbonaceous matter particles and gas at a predetermined controlled rate to a reaction zone; heating said solid carbonaceous matter and gas so that the decomposition reaction takes place under conditions embraced by the area defined by the x, y coordinates (1.0, 2.5) (2.0, 2.5) (5.0, 1.5) (5.0, 0.6) (2.0, 0.6) (1.0, 1.25) where x coordinate is the specific gas enthalpy in Kw/SCFM gas and the y coordinate is the specific solid enthalpy in Kw/lb. carbon Hr to produce acetylene; and removing said acetylene from the reaction zone to prevent it from decomposing.
Claim 12
Independent Claim
119 words
A method of producing acetylene from solid carbonaceous matter by decomposing the solid carbonaceous matter in gas; supplying solid carbonaceous matter particles having a maximum diameter of 190 microns and gas at a predetermined controlled rate to a reaction zone; heating said solid carbonaceous matter and gas so that the decomposition reaction takes place under conditions embraced by the area defined by the x, y coordinates (1.0, 2.5) (2.0, 2.5) (5.0, 1.5) (5.0, 0.6) (2.0, 0.6) (1.0, 1.25) where x coordinate is the specific gas enthalpy in Kw/SCFM gas and the y coordinate is the specific solid enthalpy in Kw/lb carbon per Hr to produce acetylene; and removing said acetylene from the reaction zone to prevent it from decomposing.
Claim 13
Independent Claim
119 words
A method of producing acetylene from solid carbonaceous matter by decomposing the solid carbonaceous matter in gas; supplying solid carbonaceous matter particles having a maximum diameter of 190 microns and gas at a predetermined controlled rate to a reaction zone; heating said solid carbonaceous matter and gas so that the decomposition reaction takes place under conditions embraced by the area defined by the x, y coordinates (1.0, 2.5) (2.0, 2.5) (5.0, 1.5) (5.0, 0.6) (2.0, 0.6) (1.0, 1.25) where x coordinate is the specific gas enthalpy in Kw/SCFM gas and the y coordinate is the specific solid enthalpy in Kw/lb carbon per Hr to produce acetylene; and removing said acetylene from the reaction zone to prevent it from decomposing.
Claim 14
Dependent Claim
39 words
A process as defined in claim 9 where the preferred carbonaceous matter particle size is 25 to 50 microns and the preferred residence time of the carbonaceous matter and its decomposition products in the reaction zone is 0.5-5 milliseconds.
Claim 15
Dependent Claim
29 words
A process as defined in claim 9 where the residence time of the solid carbonaceous matter and its decomposition products in the reaction zone is less than 10 milliseconds.
Claim 16
Dependent Claim
11 words
A process as defined in claim 8 where gas comprises hydrogen.
Claim 17
Dependent Claim
12 words
A process as defined in claim 9 where the gas comprises hydrogen.
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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) | 1985-11-08 | 1986-05-10 | 1986-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-11-08 | 1990-05-10 | 1990-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-11-08 | 1994-05-10 | 1994-11-09 | $7700.00 | Window Closed / Lapsed |