Claims
- 1. Apparatus for recovering a finished oil product from crude or waste oil contaminated with water and the like, comprising:
- a tank for receiving and containing a certain amount of waste oil, and including exhausting means for exhausting waste gasses from said tank;
- burner means including a chamber inside said tank, for heating the waste oil contained in said tank to produce (i) waste gases including light ends from the waste oil in said tank, and (ii) a desired finished oil product from the waste oil in said tank, wherein said burner means is arranged to provide a heating flame to produce fire in said chamber, the waste oil being inside said tank and outside said chamber of said burner means so as to be isolated from direct contact with the flame of said burner means;
- said waste gases being kept separate from combustion gas products produced by said burner means;
- means for feeding back said waste gases from said exhausting means to said chamber;
- afterburner means associated with said burner means and arranged inside of said tank and at least partly within said chamber, for combusting, inside said chamber, the fed back waste gases produced from the waste oil in said tank with the flame of said burner means to obtain additional heat from the combustion of the fed back waste gases for heating the waste oil contained in said tank;
- means for exhausting said combustion gas products from said burner means;
- outlet means coupled to said tank for discharging the finished oil product recovered from the waste oil in said tank.
- 2. Apparatus according to claim 1, wherein said chamber is an incineration chamber having an inner refractory surface for containing the flame provided by said burner means.
- 3. Apparatus according to claim 2, wherein said afterburner means includes blower means for directing a supply of air toward said incineration chamber.
- 4. Apparatus according to claim 3, wherein said afterburner means includes injection means on said incineration chamber and coupled to said blower means, for mixing the air supplied by said blower means with the waste oil vapors produced in said tank to obtain a vapor-air mixture, and for directing the vapor-air mixture to contact the inner refractory surface of said incineration chamber.
- 5. Apparatus according to claim 4, wherein said inner refractory surface is of generally cylindrical form, and said injection means comprises a plurality of injection nozzles in a plane perpendicular to the axis of said inner refractory surface and equally circumferentially spaced from one another for injecting the vapor-air mixture each in the same circumferential direction.
- 6. Apparatus according to claim 1, including means for controlling the temperature of the waste oil in the tank to obtain a desired water content in the finished oil product.
- 7. Apparatus for recovering a finished oil product from crude or waste oil contaminated with water and the like, comprising:
- a pre-heat tank for receiving and containing a certain amount of waste oil to be recovered;
- first burner means, including a chamber inside said pre-heat tank, for pre-heating the waste oil contained in said pre-heat tank, wherein said first burner means is arranged to provide a first heating flame in said chamber, the waste oil being outside said chamber of said first burner means and inside said pre-heat tank;
- means for exhausting combustion gas products from said first burner means;
- a still tank constructed separately from said pre-heat tank for receiving and containing a certain amount of pre-heated waste oil;
- pre-heated oil supply means coupled between said pre-heat tank and said still tank for delivering pre-heated waste oil from said pre-heat tank to said still tank;
- second burner means in said still tank for further heating the pre-heated waste oil contained in said still tank so that vapors including light ends and a desired finished oil product are produced from the waste oil, said vapors being kept separated from combustion gas products produced by said second burner means;
- means for exhausting combustion gas products from said second burner means;
- vapor return means coupled between said still tank and said pre-heat tank for returning said vapors produced in said still tank to said chamber in said pre-heat tank;
- first afterburner means coupled with said first burner means of said pre-heat tank, and arranged inside of said pre-heat tank and at least partly within said chamber for combusting, inside said chamber, said vapors delivered by said vapor return means with the first heating flame of said first burner means to obtain additional heat from combustion of said vapors from said return means for pre-heating the waste oil contained in said pre-heat tank; and
- outlet means coupled to said still tank for discharging the finished oil product recovered from the waste oil in said still tank.
- 8. Apparatus according to claim 7, including means for maintaining the temperature of the waste oil in said still tank at a desired level.
- 9. Apparatus according to claim 8, wherein said temperature maintaining means includes a temperature probe below the oil level in said still tank, and a modulating valve forming a part of said pre-heated oil supply means for controlling the amount of waste oil delivered to said still tank from said pre-heat tank.
- 10. Apparatus according to claim 7, wherein said pre-heated oil supply means includes means for spraying the pre-heated waste oil over the surface of the waste oil contained in said still tank so that vapors including light ends are flashed off in said still tank.
- 11. Apparatus according to claim 10, wherein said means for spraying the pre-heated waste oil over the surface of the waste oil contained in said still tank comprises a spray bar.
- 12. Apparatus according to claim 7, including means for maintaining the temperature of the waste oil in said pre-heat tank at a desired level.
Parent Case Info
This application is a continuation of application Ser. No. 537,278, filed 9/29/83, now abandoned.
US Referenced Citations (10)
Continuations (1)
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Number |
Date |
Country |
Parent |
537278 |
Sep 1983 |
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