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公开(公告)号：US09708206B2
公开(公告)日：2017-07-18
申请号：US14408695
申请日：2013-06-21
Applicant: SUNCOR ENERGY INC.
Inventor： Trevor Bugg , Ana Sanchez , Adrian Revington , James Patrick Macaulay
CPC classification number: C02F1/56 , B01D12/00 , C02F1/5209 , C02F1/5281 , C02F2103/10 , C02F2209/11 , C02F2209/40 , C10G1/045 , C10G7/04
Abstract: Techniques are described that relate to enhancing flocculation and dewatering of thick fine tailings, for example by reducing process oscillations. One example method includes dispersing a flocculant into thick fine tailings having a turbulent flow regime to produce turbulent flocculating tailings; subjecting the turbulent flocculating tailings to shear to build up flocs and increase yield stress, to produce a flocculated material having a non-turbulent flow regime; and shear conditioning the flocculated material to decrease the yield stress and produce conditioned flocculated tailings within a water release zone; and dewatering the conditioned flocculated tailings, for example by employing sub-aerial deposition. The thick fine tailings may have a Bingham Reynolds Number of at least 40,000 upon flocculant addition. Inhibiting process oscillations may include providing turbulent tailings feed, configuring a downstream pipeline assembly to reduce backpressure fluctuations and/or reducing air content in the flocculant solution, for example.
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公开(公告)号：US20150176893A1
公开(公告)日：2015-06-25
申请号：US14408690
申请日：2013-06-21
Applicant: SUNCOR ENERGY INC.
Inventor： Adrian Peter Revington , Ana Cristina Sanchez , Trevor Bugg , Oladipo Omotoso
CPC classification number: F26B1/00 , B09C1/08 , C02F1/56 , C02F2103/10 , C10G1/045 , C10G2300/1033 , C10G2300/208
Abstract: Techniques for dewatering thick fine tailings may include one or more pre-treatment steps, such as pre-shearing to reduce the yield stress prior to flocculation, hydrocarbon removal below a threshold to improve flocculation and dewatering, flocculant dosing on a clay basis, and providing certain properties of the thick fine tailings related to coarse and fine particle sizes and/or chemistry such as divalent cation content. Various advantages may result from pre-treatments based on thick fine tailings properties, such as reduced flocculant dosage requirements, improved dispersion of flocculant into the thick fine tailings and/or enhanced dewatering, for example. One or more of the pre-treatments may be performed.
Abstract translation: 用于脱水厚细细尾矿的技术可以包括一个或多个预处理步骤，例如在絮凝之前减少屈服应力的预剪切，将烃去除低于阈值以改善絮凝和脱水，以粘土为基础的絮凝剂给料 粗细尾矿的某些特性与粗细和细粒度和/或化学性质有关，例如二价阳离子含量。 例如，基于粗细尾矿性质的预处理可能产生各种优点，例如絮凝剂的用量要求降低，絮凝剂分散到粗细的尾矿中，和/或增强脱水。 可以执行一种或多种预处理。
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Patent Agency Ranking
公开(公告)号：US20210102125A1
公开(公告)日：2021-04-08
申请号：US17124695
申请日：2020-12-17
Applicant: Suncor Energy Inc.
Inventor： Adrian Peter Revington , Ana Cristina Sanchez , Trevor Bugg , Oladipo Omotoso
Abstract: Techniques for dewatering thick fine tailings may include flocculant dosing on a clay basis and then subjecting the flocculated tailings to dewatering, for instance by pipelining the flocculated material from flocculant addition to a deposition site. The thick fine tailings can be pre-treated by removing hydrocarbons and shear-thinning prior to flocculant addition.
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公开(公告)号：US20200157432A1
公开(公告)日：2020-05-21
申请号：US16752639
申请日：2020-01-25
Applicant: Suncor Energy Inc.
Inventor： Adrian Peter Revington , Oladipo Omotoso , Patrick Sean Wells , Thomas Charles Hann , Marvin Harvey Weiss , Trevor Bugg , Jamie Eastwood , Stephen Joseph Young , Hugues Robert O'Neill , Ana Cristina Sanchez
Abstract: A process for dewatering oil sand fine tailings is provided and comprises a dispersion and floc build-up stage comprising in-line addition of a flocculent solution comprising an effective amount of flocculation reagent into a flow of the oil sand fine tailings; a gel stage wherein flocculated oil sand fine tailings is transported in-line and subjected to shear conditioning; a floc breakdown and water release stage wherein the flocculated oil sand fine tailings releases water and decreases in yield shear stress, while avoiding an oversheared zone; depositing the flocculated oil sand fine tailings onto a deposition area to form a deposit and to enable the release water to flow away from the deposit, preferably done in a pipeline reactor and managing shear according to yield stress and CST information and achieves enhanced dewatering.
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公开(公告)号：US20180079966A1
公开(公告)日：2018-03-22
申请号：US15820707
申请日：2017-11-22
Applicant: Suncor Energy Inc.
Inventor： Adrian Peter Revington , Oladipo Omotoso , Patrick Sean Wells , Thomas Charles Hann , Marvin Harvey Weiss , Trevor Bugg , Jamie Eastwood , Stephen Joseph Young , Hugues Robert O'Neill , Ana Cristina Sanchez
Abstract: A process for dewatering oil sand fine tailings is provided and comprises a dispersion and floc build-up stage comprising in-line addition of a flocculent solution comprising an effective amount of flocculation reagent into a flow of the oil sand fine tailings; a gel stage wherein flocculated oil sand fine tailings is transported in-line and subjected to shear conditioning; a floc breakdown and water release stage wherein the flocculated oil sand fine tailings releases water and decreases in yield shear stress, while avoiding an oversheared zone; depositing the flocculated oil sand fine tailings onto a deposition area to form a deposit and to enable the release water to flow away from the deposit, preferably done in a pipeline reactor and managing shear according to yield stress and CST information and achieves enhanced dewatering.
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公开(公告)号：US11267730B2
公开(公告)日：2022-03-08
申请号：US16661855
申请日：2019-10-23
Applicant: SUNCOR ENERGY INC.
Inventor： Marvin Weiss , Ana Sanchez , Trevor Bugg , Adrian Revington
Abstract: Various techniques are provided in relation to flocculation and/or dewatering of thick fine tailings, with shear conditioning of flocculated tailings material in accordance with a pre-determined shearing parameter, such as the Camp Number. One example method of treating thick fine tailings including dispersing a flocculant into the thick fine tailings to form a flocculating mixture; shearing the flocculating mixture to increase yield stress and produce a flocculated mixture; shear conditioning the flocculated mixture to decrease the yield stress and break down flocs, the shear conditioning being performed in accordance with the pre-determined shearing parameter to produce conditioned flocculated material within a water release zone where release water separates from the conditioned flocculated material. The conditioned flocculated material can then be subjected to dewatering, for example by depositing, thickening or filtering. The design, construction and/or operation of a flocculation pipeline assembly can be facilitated.
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公开(公告)号：US10899969B2
公开(公告)日：2021-01-26
申请号：US14408690
申请日：2013-06-21
Applicant: SUNCOR ENERGY INC.
Inventor： Adrian Revington , Ana Sanchez , Trevor Bugg , Oladipo Omotoso
IPC: C10G1/04 , E21B43/34 , C02F1/52 , E21B21/06 , B09C1/08 , C02F1/56 , F26B1/00 , B01D21/01 , C02F103/10 , B03D3/06
Abstract: Techniques for dewatering thick fine tailings may include one or more pre-treatment steps, such as pre-shearing to reduce the yield stress prior to flocculation, hydrocarbon removal below a threshold to improve flocculation and dewatering, flocculant dosing on a clay basis, and providing certain properties of the thick fine tailings related to coarse and fine particle sizes and/or chemistry such as divalent cation content. Various advantages may result from pre-treatments based on thick fine tailings properties, such as reduced flocculant dosage requirements, improved dispersion of flocculant into the thick fine tailings and/or enhanced dewatering, for example. One or more of the pre-treatments may be performed.
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