Back to results
US 2011/0226672 A1Published application
Methods and Devices for Extracting Hydrocarbons From Oil Sand
AssigneeSiemens Aktiengesellschaft
InventorUrs Peuker
Life of this patent
Estimating the term…
Abstract
A method and a device for carrying out the method for extracting hydrocarbons from oil sand uses organic extractants and a filter apparatus with a continuous rotary filter as well as a steaming unit.
Claims22
A method for extracting hydrocarbons from oil sand, comprising the steps:
- a1) producing a first suspension from oil sand and a first organic extractant;
- a2) transferring the first suspension into at least one settling tank, in the lower region of which particles of the first suspension settle by sedimentation;
- a3) removing a first subquantity of the first suspension from an upper region of the at least one settling tank into at least one sedimenting centrifuge, which may have the form of a decanter, by means of which a first extract phase is separated from a residue phase;
- a4) forming a second suspension comprising a second subquantity of the first suspension from a lower region of the at least one settling tank and the residue phase;
- b1) transferring the second suspension into at least one filter apparatus comprising a continuous rotary filter, by means of which a filter cake comprising filterable particles of the second suspension is separated from a majority of second extract phase;
- c1) expelling a residual quantity of second extract phase from the filter cake, by pressurizing steam through the filter cake by means of a first steaming unit, wherein the continuous rotary filter is used in combination with the first unit so that the separations of the filter cake according to step b1) and step c1) are carried out successively in the filter apparatus;
- and
- d1) at least one of:
- removing and combining the first and second extract phases containing the extracted hydrocarbons.
6 more elements
The method according to claim 21, wherein a mixture of at least two different organic solvents is used as the second extractant.
A device for extracting hydrocarbons from oil sand, comprising:
- at least one first dosing instrument for adding a first extractant to the oil sand;
- at least one mixer for producing a first suspension;
- at least one settling tank coupled with said mixer for receiving the first suspension, wherein in the lower region of the settling tank particles of the first suspension settle by sedimentation;
- optionally at least one second dosing instrument for adding at least one additive to the first suspension;
- at least one sedimenting centrifuge arranged downstream of the at least one settling tank receiving a first subquantity of the first suspension from an upper region of the at least one settling tank, by means of which a first extract phase is separated from a residue phase;
- at least one collecting tank for forming a second suspension comprising a second subquantity of the first suspension from a lower region of the at least one settling tank and the residue phase, arranged downstream of the at least one settling tank and the at least one sedimenting centrifuge;
- at least one filter apparatus, comprising a continuous rotary filter, arranged downstream of the at least one collecting tank by means of which a filter cake comprising filterable particles of the second suspension is separated from a majority of second extract phase;
- optionally at least one third dosing instrument for applying the at least one second extractant and optionally the third extractant to the filter cake;
- at least one first unit in the form of a steaming unit, which is integrated into the filter apparatus and pressurizes steam through the filter cake, wherein the continuous rotary filter is used in combination with the first unit so that the separations of the filter cake are carried out successively in the filter apparatus;
- and
- at least one second unit for at least one of removing and combining the first and second extract phases containing the extracted hydrocarbons.
8 more elements
Dependencies are inferred from the claim text.