Techniques for agglomerating mature fine tailing by injecting a polymer in a process flow

Patent metadata

Field	Value
Publication number	US-10071352-B2
Application number	US-201314648285-A
Country	US
Kind code	B2
Filing date	Dec 9, 2013
Priority date	Dec 7, 2012
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

Apparatus is provided featuring a signal processor or processing module configured at least to: a signal processor configured to: receive signaling containing information about at least one rheological parameter related to a fluid containing Mature Fine Tailings (MFTs) flowing through a process pipe; and determine a dosing of a polymer to the fluid so as to cause a polymer induced agglomeration of the MFTs in the fluid, based at least partly on the signaling received. The signal processor may be configured to provide corresponding signaling to control the dosing of the polymer to cause the polymer induced fine agglomeration of the MFTs in the fluid.

First claim

What is claimed is:

1. Apparatus comprising:
a plurality of sensing devices and a signal processor,
the signal processor configured to:
receive from the plurality of sensing devices signaling containing information about at least one rheological parameter related to a fluid containing Mature Fine Tailings (MFTs) flowing through a process pipe along an axial direction of the process pipe, the process pipe comprising an outside circumference; and
determine corresponding signaling containing information about a dosing of a polymer to the fluid so as to cause a polymer induced fine agglomeration of the MFTs in the fluid, based at least partly on the signaling received, wherein the plurality of sensing devices are located on the outside circumference of the process pipe at different axial locations of the process pipe, the sensing devices configured to sense the at least one rheological parameter and to provide the signaling containing information about the at least one rheological parameter, wherein each of the sensing devices comprises a strip of piezoelectric material surrounding the outside circumference for measuring pressures indicative of the at least one rheological parameter.

2. Apparatus according to claim 1 , wherein the signal processor is configured to provide the corresponding signaling to control the dosing of the polymer to cause the polymer induced fine agglomeration of the MFTs in the fluid.

3. Apparatus according to claim 1 , wherein the signal processor is configured to determine the dosing of the polymer based at least partly on a change in the at least one rheological parameter.

4. Apparatus according to claim 1 , wherein the at least one rheological parameter includes information about, or related to, a wall shear stress and a wall shear rate of the fluid.

5. Apparatus according to claim 4 , wherein the signal processor is configured to determine the dosing of the polymer based at least partly on a ratio ζ of the wall shear stress and the wall shear rate.

6. Apparatus according to claim 5 , wherein the signal processor is configured to determine the dosing of the polymer based at least partly on keeping the ratio ζ substantially constant by varying the dosing of the polymer.

7. Apparatus according to claim 1 , wherein the signal processor is configured to determine an injection rate of the dosing of the polymer.

8. Apparatus according to claim 4 , wherein
the signaling received contains information about measurements related to a flow rate and a pressure gradient of the fluid; and
the signal processor is configured to determine the wall shear stress based at least partly on the measurements received.

9. Apparatus according to claim 4 , wherein
the signaling received contains information about measurements related to a differential pressure and a velocity profiling related to the fluid; and
the signal processor is configured to determine the wall shear stress based at least partly on the measurements related to the differential pressure, determine the wall shear rate based at least partly on the measurements related to the velocity profiling, and monitor the wall shear stress simultaneously with the wall shear rate.

10. Apparatus according to claim 1 , wherein the at least one rheological parameter includes information about energy dissipation related to the fluid, wherein
the received signaling contains information about array velocity measurements related to the fluid; and
the signal processor is configured to monitor a rate of energy dissipation related to the fluid, based at least partly on the array velocity measurements.

11. Apparatus according to claim 4 , wherein the signal processor is configured to determine the wall shear stress τ R , using a signal processing algorithm based at least partly on equation (1), as follows:

τ
R

=

R
2

⁢

d
⁢

⁢
p

d
⁢

⁢
x

,

(
1
)

where R is the inside radius of the process pipe and dp/dx is the pressure gradient along the axial dimension of the process pipe.

12. Apparatus according to claim 11 , wherein the signal processor is configured to determine the dosing of the polymer using a signal processing algorithm based at least partly on the Buckingham Reiner equation.

13. Apparatus according to claim 12 , wherein the signal processor is configured to determine a relationship between the wall shear rate and the wall shear stress, using a signal processing algorithm based at least partly on equation (2), as follows:

τ
yx

=

-

μ
0

⁢

∂

v
x

∂
y

±

τ
0

,

(
2
)

where μ o is the plastic viscosity of the fluid and τ o is a yield point of the fluid.

14. Apparatus according to claim 2 , wherein the apparatus further comprises a dosing device configured to respond to the corresponding signaling and to provide the dosing of the polymer to cause the polymer induced fine agglomeration of the MFTs in the fluid.

15. Apparatus according to claim 1 , wherein the apparatus further comprises at least one measuring or s

Assignees

• Cidra Corporate Services Inc
• Suncor Energy Inc

Inventors

• Van Der Spek Alex M
• Loose Douglas H
• Revington Adrian

Classifications

• G01F1/00 Primary

  Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow (measuring a proportion of the volume flow G01F5/00) · CPC title

• C02F1/5209

  Regulation methods for flocculation or precipitation · CPC title

• B01F15/0408 Primary

  Operations & Transport · mapped topic

• C02F2209/40

  Liquid flow rate · CPC title

• C02F2209/006

  comprising a software program or a logic diagram · CPC title