US3843307A
Expired / Lapsed
US
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Process for incomplete combustion of hydrocarbons
Assignee: Shell USA Inc
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Filing: 1974-01-28
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Granted: 1974-10-22
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Expires: 1994-01-28
Abstract
Abstract An improved process for incomplete combustion of gaseous or liquid hydrocarbon fuels is described wherein the fuel is mixed with or finely dispersed in an oxygen-containing gas and passed as a gaseous jet through at least one supply opening into a substantially void reactor. In this process soot formation is substantially reduced by introducing the mixture of fuel and oxygen-containing gas in the form of a gaseous jet at a velocity which is sufficiently high such that the initial part of the reaction zone or point of incoming fuel ignition is displaced by a distance which is at least ten times the diameter of the supply opening into a reactor where the residence time of the gaseous combustion product is at least 0.1 seconds.
Inventors
- 👤 G Staudinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:29
CPC Classifications
C; C01; C01B; C01B3/00; C01B3/02; C01B3/32; C01B3/34; C01B3/36; C01B3/363
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
139 words
In a process for the incomplete combustion of a gaseous or liquid hydrocarbon fuel in a substantially void reactor wherein the fuel is mixed with or finely dispersed in an oxygencontaining gas and passed as a gaseous jet through at least one supply opening into the reactor, the initial part of the reaction zone in the reactor occuring at a point where the mixture of fuel and oxygen-containing gas introduced as a gaseous jet undergoes ignition, the improvement which comprises: passing the gaseous jet into a reactor in which the residence time of the gaseous product of incomplete combustion is at least 0.1 seconds at a sufficiently high velocity such that the initial part of the reaction zone is displaced from the supply opening by a distance which is at least ten times the diameter of the supply opening.
Claim 2
Dependent Claim
139 words
In a process for the incomplete combustion of a gaseous or liquid hydrocarbon fuel in a substantially void reactor wherein the fuel is mixed with or finely dispersed in an oxygencontaining gas and passed as a gaseous jet through at least one supply opening into the reactor, the initial part of the reaction zone in the reactor occuring at a point where the mixture of fuel and oxygen-containing gas introduced as a gaseous jet undergoes ignition, the improvement which comprises: passing the gaseous jet into a reactor in which the residence time of the gaseous product of incomplete combustion is at least 0.1 seconds at a sufficiently high velocity such that the initial part of the reaction zone is displaced from the supply opening by a distance which is at least ten times the diameter of the supply opening.
Claim 3
Dependent Claim
30 words
The process according to claim 1 wherein the mixture of fuel and oxygen-containing gas is introduced into the reactor at a O/C ratio of from about 1.0 to about 1.8.
Claim 4
Dependent Claim
77 words
The process according to claim 2 wherein the reactor is substantially cylindrical in shape having a diameter which is from 10 to 100 times the diameter of the supply opening and a length which is from 50 to 500 times the diameter of the supply opening, said supply opening being located at one end of the reactor with at least one device for discharge of the reaction product being located at the other end of the reactor.
Claim 5
Dependent Claim
89 words
The process according to claim 3 wherein two or more equal diameter supply openings are present which are arranged in a regular array relative to the center line of the reactor, the distance between any two supply openings is at least ten times as large as the diameter of said supply openings with the diameter of the reacTor being so large that the distance between the wall of the reactor and the nearest supply opening is at least five times as large as the diameter of said supply openings.
Claim 6
Dependent Claim
41 words
The process according to claim 4 wherein two or more discharge devices, evenly spaced around the circumference of the reactor, are present at a distance from the inlet side that is equal to at least half the length of the reactor.
Claim 7
Dependent Claim
12 words
The process according to claim 2 wherein the oxygen-containing gas is air.
Claim 8
Dependent Claim
20 words
The process according to claim 6 wherein the gaseous jet issues from the supply opening with little or no swirl.
Claim 9
Dependent Claim
18 words
The process according to claim 6 wherein the velocity of the gaseous jet is at least 20 m/s.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |