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

IPC: C10G1/04 ,  B09C1/08 ,  E21B43/34 ,  C02F1/52 ,  E21B21/06 ,  C02F1/56 ,  F26B1/00

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.

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

IPC: C10G1/04 ,  C10G33/04 ,  B01F5/04

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.

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

IPC: C10G1/04 ,  B01F5/04 ,  C10G33/04 ,  B01F5/00 ,  C02F11/14 ,  C02F103/10 ,  C02F1/56

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.

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

IPC: F26B1/00 ,  C02F1/56

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。