Purification of renewable oils

1. A process for the purification of renewable oils and petroleum oils comprising the steps:

providing a feedstock comprising a renewable oil, a petroleum oil, or a combination thereof;

centrifuging the feedstock in a centrifugal device producing a minimum of 7000 RCF;

contacting the centrifuged feedstock with a mixture containing water and diammonium phosphate and heating to a temperature high enough to evaporate the water and holding that temperature until the water evaporates;

raising the temperature to between approximately 120° C. and 130° C. for approximately 30 to 90 minutes;

allowing the mixture to cool below 120° C.;

centrifuging the resultant mixture in a centrifugal device producing a minimum of 7000 RCF, whereby precipitates are separated from the resultant mixture to produce a resultant oil; and

collecting the resultant oil in a container.

2. A process for the purification of renewable oils or petroleum oils, comprising the steps:

providing a feedstock oil comprising a renewable oil, a petroleum oil, or a combination thereof;

depositing the feedstock oil into a feed tank;

determining by prior lab work the temperature range at which maximum insolubility of the oil and impurities occurs and maintaining this range in the feed tank, thereby producing a first resultant material;

feeding the first resultant material to a first centrifuge;

the first centrifuge producing at least 7000 RCF wherein non-oil components are separated from oil components;

discharging the non-oil components from the centrifuge;

moving the oil components to a transfer tank;

transferring the oil components to a reactor;

adding diammonium phosphate to the oil components in the reactor producing a second resultant material;

maintaining the temperature of the second resultant material in the reactor at 130° C. for 30 minutes to allow formation of precipitates of any metals occurring in the oil components thereby producing a third resultant material;

in a batch process, transferring the third resultant material to the first centrifuge or in a continuous process, transferring the third resultant material to a second centrifuge, wherein the first centrifuge or the second centrifuge separates the precipitates, and

removing the precipitates whereby purified oil remains.

3. A process for the purification of renewable oils or petroleum oils, comprising the steps:

providing a feedstock oil comprising a renewable oil, a petroleum oil, or a combination thereof;

depositing the feedstock oil into a feed tank;

adding to the feed tank a citric acid aqueous solution;

determining by prior lab work the temperature range at which maximum insolubility of the oil and impurities occurs and maintaining this range in the feed tank, thereby producing a fourth resultant material;

feeding the fourth resultant material in the feed tank to a first centrifuge;

the first centrifuge producing at least 7000 RCF wherein non-oil components are separated from oil components;

discharging the non-oil components from the centrifuge leaving a fifth resultant material;

moving the fifth resultant material to a transfer tank;

transferring the fifth resultant material to a reactor;

adding diammonium phosphate to the fifth resultant material in the reactor producing a sixth resultant material;

maintaining the temperature of the sixth resultant material in the reactor at 130° C. for 30 minutes to allow formation of precipitates of any metals occurring in the oil components;

in a batch process, transferring the sixth resultant material to the first centrifuge or in a continuous process, transferring the sixth resultant material to a second centrifuge, wherein the first centrifuge or the second centrifuge separates out the precipitates, and

removing the precipitates whereby purified oil remains.