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US 12,023,604 B2Granted
Method and system for purification of oil
AssigneeSKF MFR Technology AB
InventorThomas Persson
Life of this patent
Estimating the term…
Abstract
A method and a system for purification of oil, wherein the method comprises the steps of:—adding to a contaminated oil provided in a preparation tank a chemical booster for boosting capturing of impurities and/or a separation of phases in the contaminated oil; —waiting for allowing different phases to be separated; —pumping content out from the preparation tank through a fluid connection; sensing at least one property of the content in the fluid connection; —controlling a valve provided in the fluid connection to transfer the content to a next step in the purification process or to another destination in dependence of the sensed at least one property.
Claims25
A method for purification of oil comprising the steps of:
- adding to an oil comprising contaminating particles and provided in a preparation tank, a liquid separation aid to capture the particles and having a larger density than the oil, thus forming a heavy phase together with the particles;
- allowing different phases to be separated;
- pumping content out from the preparation tank through a fluid connection;
- sensing at least one property of the thus-pumped content in the fluid connection, comprising sensing dielectric properties or measuring density differences;
- controlling a three-way valve provided in the fluid connection to transfer the thus-pumped content to a next purification step to remove any remaining particles from the thus-pumped content or another destination in dependence on the sensed dielectric properties or measured density differences;
- and
- controlling said valve to transfer the thus-pumped content to the next purification step of the purification process only if the sensed at least one property corresponds to an oil content above a predefined threshold, and to another tank or back to the preparation tank only if the sensed at least one property corresponds to an oil content below a predefined threshold.
4 more elements
A method for purification of oil comprising the steps of:
- adding to an oil comprising at least one of water and an emulsion phase and provided in a preparation tank, a chemical booster for separating phases in the oil,
- wherein the chemical booster is an emulsion breaker or a water cleaning product;
- allowing different phases to be separated;
- pumping content out from the preparation tank through a fluid connection;
- sensing at least one property of the thus-pumped content in the fluid connection, comprising sensing dielectric properties or measuring density differences;
- controlling a three-way valve provided in the fluid connection to transfer the thus-pumped content to a next purification step in the purification process or another destination in dependence on the sensed dielectric properties or measured density differences;
- controlling said valve to transfer the thus-pumped content to the next purification step of the purification process only if the sensed at least one property corresponds to an oil content above a predefined threshold, and to another tank or back to the preparation tank only if the sensed at least one property corresponds to an oil content below a predefined threshold;
- and
- centrifuging the thus-pumped content in the next purification step.
6 more elements
A system for purification of oil, said system comprising:
- at least one preparation tank comprising oil to be purified and a liquid separation aid, the oil comprising contaminating particles,
- wherein the liquid separation aid has a larger density than the oil and forms a heavy phase together with the particles;
- at least one heater provided at the preparation tank;
- at least one centrifugal separator;
- a fluid connection allowing transfer of content out from the preparation tank;
- and
- at least one redirection arrangement provided in the fluid connection, said redirection arrangement comprising a three-way valve which is arranged to direct the content from the preparation tank to either the centrifugal separator or another destination, said redirection arrangement further comprising at least one sensor and a control system connected to the at least one sensor and to the valve,
- wherein said sensor is arranged to measure dielectric properties or density differences of the content passing in the fluid connection,
- said control system is arranged for controlling said valve to transfer said content passing in the fluid connection to the centrifugal separator or the another destination in dependence on an output from the at least one sensor, and
- the control system is arranged to control said valve to transfer the content passing in the fluid connection to the centrifugal separator only if the output from the at least one sensor corresponds to an oil content above a predefined threshold, and to another tank or back to the preparation tank only if the output from the at least one sensor corresponds to an oil content below a predefined threshold.
7 more elements
A system for purification of oil, said system comprising:
- at least one preparation tank comprising oil to be purified and a chemical booster for separating phases in the oil, said oil to be purified comprising at least one of water and an emulsion phase,
- wherein said chemical booster is an emulsion breaker or a water cleaning product;
- at least one heater provided at the preparation tank;
- at least one centrifugal separator;
- a fluid connection allowing transfer of content out from the preparation tank;
- and
- at least one redirection arrangement provided in the fluid connection, said redirection arrangement comprising a three-way valve which is arranged to direct the content from the preparation tank to either the centrifugal separator or another destination, said redirection arrangement further comprising at least one sensor and a control system connected to the at least one sensor and to the valve,
- wherein said sensor is arranged to measure dielectric properties or density differences of the content passing in the fluid connection,
- said control system is arranged for controlling said valve to transfer said content to the centrifugal separator or the other destination in dependence on an output from the at least one sensor, and
- the control system is arranged to control said valve to transfer the content to the centrifugal separator only if the output from the at least one sensor corresponds to an oil content above a predefined threshold, and to another tank or back to the preparation tank only if the output from the at least one sensor corresponds to an oil content below a predefined threshold.
7 more elements
Dependencies are inferred from the claim text.