PROGRESSIVE TANK SYSTEM AND METHOD FOR USING THE SAME
20170259223 · 2017-09-14
Inventors
- Zachary Wilson Logan (Bar Nunn, WY, US)
- Richard Lee Binks (Casper, WY, US)
- Camdon J. DePaolo (Casper, WY, US)
Cpc classification
B01F33/811
PERFORMING OPERATIONS; TRANSPORTING
B01F35/2202
PERFORMING OPERATIONS; TRANSPORTING
B01F35/53
PERFORMING OPERATIONS; TRANSPORTING
B01F2101/2805
PERFORMING OPERATIONS; TRANSPORTING
B01F33/8212
PERFORMING OPERATIONS; TRANSPORTING
B01F33/822
PERFORMING OPERATIONS; TRANSPORTING
B01F33/834
PERFORMING OPERATIONS; TRANSPORTING
B01F35/51
PERFORMING OPERATIONS; TRANSPORTING
B01F35/2112
PERFORMING OPERATIONS; TRANSPORTING
International classification
Abstract
Embodiments of the present disclosure involve methods, devices, and systems for hydrating polymers using multiple mixing chambers. Adjacent mixing chambers may be coupled using an under-over baffle, and each mixing chamber may be generally rectangular with rounded corners.
Claims
1. A system for hydrating a dry polymer, comprising: a tank assembly having a plurality of mixing chambers, wherein adjacent mixing chambers are operatively coupled by an under-over baffle, and wherein each of the plurality of mixing chambers comprises an open interior bounded by a plurality of walls having a generally rectangular configuration, wherein adjacent walls are coupled by rounded corners; and at least one mixing device disposed within at least one of the plurality of mixing chambers.
2. The system of claim 1, wherein the at least one mixing device comprises at least one impeller.
3. The system of any of claims 1, wherein each of the plurality of mixing chambers comprises: a rectangular front wall; a first side wall oriented substantially perpendicularly to the front wall; a first curved corner wall extending between a first edge of the front wall and a first edge of the first side wall; a second side wall oriented substantially perpendicularly to the front wall; a second curved corner wall extending between a second edge of the front wall and a first edge of the second side wall; a rectangular back wall, parallel to the front wall; a third curved corner wall extending between a first edge of the back wall and a second edge of the first side wall; a fourth curved corner wall extending between a second edge of the back wall and a second edge of the second side wall; and a lower wall coupled to a lower end of each of the front wall, the back wall, and the side walls, wherein the lower wall is oriented substantially perpendicularly to the front, back, and side walls.
4. The system of claim 3, the plurality of mixing chambers comprising: a first mixing chamber, comprising: a polymer inlet, through which wetted polymer is provided to the first mixing chamber; and a first baffle inlet defined in a lower portion of the back wall of the first mixing chamber; a second mixing chamber, comprising: a first baffle outlet defined in an upper portion of the front wall of the second mixing chamber; and a second baffle inlet defined in a lower portion of the back wall of the second mixing chamber; wherein a first baffle operatively couples the first mixing chamber to the second mixing chamber, the first baffle comprising a first fluid conduit extending between the first baffle inlet and the first baffle outlet.
5. The system of claim 4, the first fluid conduit comprising an open interior region partially enclosed by an outside surface of the back wall of the first mixing chamber, an outside surface of the front wall of the second mixing chamber, two parallel opposed side baffle walls, an upper baffle wall, and a lower baffle wall.
6. The system of claim 4, wherein the first baffle inlet comprises an opening having a first end and a second end, wherein the first end is disposed at or near the first edge of the back wall, and wherein the second end is disposed at or near the second edge of the back wall.
7. The system of claim 6, wherein the opening has a rectangular shape or an elliptical shape.
8. The system claim 6, wherein a size of the opening is adjustable.
9. The system of claim 4, further comprising a level sensor operatively coupled to the first mixing chamber, wherein the level sensor is configured to determine a level of a polymer solution in the first mixing chamber.
10. The system of claim 9, further comprising a controller configured to control one or more operations performed by the system, wherein the level sensor is further configured to communicate the determined level of the polymer solution in the first mixing chamber to the controller.
11. The system of claim 10, wherein the controller is further configured to implement a feedback control loop based at least in part on the determined level of the polymer solution in the first mixing chamber, wherein the feedback control loop is used to adjust a rate at which the wetted polymer is added to the first mixing chamber.
12. The system of any of claim 4, wherein the at least one mixing device comprises a first mixing device disposed in the first mixing chamber, and at least one additional mixing device disposed in at least one additional mixing chamber, the first mixing device configured to mix a volume of a polymer solution in the first mixing chamber, and the at least one additional mixing device configured to mix the volume of the polymer solution in the at least one additional mixing chamber.
13. The system of claim 12, wherein the first mixing device is configured to mix the volume of polymer solution more aggressively than the at least one additional mixing device.
14. The system of any of claim 12, wherein the first mixing device is configured to mix the volume of polymer solution by rolling the volume of polymer solution within the first mixing chamber.
15. The system of any of claim 12, wherein the at least one additional mixing device is configured to mix the volume of polymer solution by stirring the volume of polymer solution within the at least one additional mixing chamber.
16. The system of claim, wherein the plurality of mixing chambers comprises at least two mixing chambers.
17. A method of hydrating a dry polymer, using a plurality of mixing chambers, wherein adjacent mixing chambers are operatively coupled by an under-over baffle, and wherein each of the plurality of mixing chambers comprises an open interior bounded by a plurality of walls having a generally rectangular configuration, wherein adjacent walls are coupled by rounded corners, the method comprising: providing a volume of fluid to a first mixing chamber of the plurality of mixing chambers; providing un-hydrated wetted polymer particles to the first mixing chamber to create a volume of polymer solution; rolling, using a first mixing device disposed in the first mixing chamber, the volume of polymer solution; moving the volume of polymer solution from the first mixing chamber into a baffle via a baffle inlet, wherein the baffle inlet is defined in a lower portion of a back wall of the first mixing chamber; and moving the volume of polymer solution through the baffle and into a second mixing chamber of the plurality of mixing chambers via a baffle outlet, wherein the baffle outlet is defined in an upper portion of a front wall of the second mixing chamber.
18. The method of claim 17, the baffle comprising an open interior region partially enclosed by an outside surface of the back wall of the first mixing chamber, an outside surface of the front wall of the second mixing chamber, two parallel opposed side baffle walls, an upper baffle wall, and a lower baffle wall.
19. The method of 18, further comprising stirring, using a second mixing device disposed in the second mixing chamber, the volume of polymer solution.
20. A system for hydrating a dry polymer, comprising: a polymer wetting device configured to dispense a measured amount of a wetted polymer; a tank assembly having a plurality of mixing chambers, wherein adjacent mixing chambers are operatively coupled by an under-over baffle, and wherein each of the plurality of mixing chambers comprises an open interior bounded by four walls, wherein adjacent walls are coupled by rounded corners, the plurality of mixing chambers comprising at least a first mixing chamber and a last mixing chamber, wherein the polymer wetting device is coupled to the first mixing chamber and configured to dispense the measured amount of the wetted polymer into the first mixing chamber; at least one mixing device disposed within at least one of the plurality of mixing chambers; a hydrated polymer discharge mechanism configured to discharge the hydrated polymer from the last mixing chamber; and a controller configured to control operation of at least one of the polymer wetting device, the hydrated polymer discharge mechanism, and the at least one mixing device.
Description
BRIEF DESCRIPTION OF THE DRAWINGS
[0042]
[0043]
[0044]
[0045]
[0046]
[0047]
[0048]
[0049] While the disclosed subject matter is amenable to various modifications and alternative forms, specific embodiments have been shown by way of example in the drawings and are described in detail below. The intention, however, is not to limit the disclosed subject matter to the particular embodiments described. On the contrary, the disclosure is intended to cover all modifications, equivalents, and alternatives falling within the scope of the disclosed subject matter as defined by the appended claims.
[0050] As the terms are used herein with respect to ranges of measurements (such as those disclosed immediately above), “about” and “approximately” may be used, interchangeably, to refer to a measurement that includes the stated measurement and that also includes any measurements that are reasonably close to the stated measurement, but that may differ by a reasonably small amount such as will be understood, and readily ascertained, by individuals having ordinary skill in the relevant arts to be attributable to measurement error, differences in measurement and/or manufacturing equipment calibration, human error in reading and/or setting measurements, adjustments made to optimize performance and/or structural parameters in view of differences in measurements associated with other components, particular implementation scenarios, imprecise adjustment and/or manipulation of objects by a person or machine, and/or the like.
[0051] Although the term “block” may be used herein to connote different elements illustratively employed, the term should not be interpreted as implying any requirement of, or particular order among or between, various steps disclosed herein unless and except when explicitly referring to the order of individual steps.
DETAILED DESCRIPTION
[0052] The present disclosure involves methods, devices, and systems for hydrating polymers.
[0053] The tank assembly 106 includes a plurality of mixing chambers with five 106A-106E being shown in
[0054] The corner walls 118 may have any curvature suitable for providing flow within the liquid to mix the polymer with the liquid. In embodiments, the curvature of the corner walls 118 may be designed, using computational fluid dynamics, to optimize the mixing of a particular type of liquid and/or polymer that may be expected to be provided to the system. In embodiments, for example, squared corners (e.g., corners formed from perpendicularly intersecting walls) have been found to form stagnant regions during mixing, and a round chamber often may result in a uniform spinning motion of the liquid and polymer. Both of these situations may reduce the amount of mixing that occurs in the chamber. Accordingly, a curvature that more approximately results in a generally rectangular chamber with at least slightly rounded corners may provide a more suitable mixing environment.
[0055] The illustrative system 100 shown in
[0056]
[0057] The fluid conduit 128 includes an open interior region enclosed by an outside surface of the back wall of the first mixing chamber, an outside surface of the front wall of the second mixing chamber, two parallel opposed side baffle walls 130, a lower baffle wall 132, and an upper baffle wall 134.
[0058] While an under-over baffle 122 having a baffle inlet 124 and baffle outlet 126 are shown for the first chamber 106A, it will be appreciate that any chamber of a system 100 may have an under-over baffle system. For example, any of chamber 106B-106E may have an under-over baffle system.
[0059] Additionally,
[0060] After mixing in the first chamber 106A, the polymer solution is directed through the under-over baffle 122. For example, the solution flows through the opening 124 in the bottom of the back chamber wall through the fluid conduit 128 and into the second mixing chamber 106B via the opening 126 in the top of the front wall of the second mixing chamber 106B. According to embodiments, under-over baffles may mitigate creation of a slipstream throughout the tank assembly 106. Specifically, with the baffles, there may be no “easy” path for liquid or polymer to travel along in the tank assembly 106 such that polymer is under-hydrated when leaving the assembly 106.
[0061] In embodiments, any number of the mixing chambers 106 A-E may include a mixing device 138. In embodiments, for example, each mixing chamber 106 A-E may include a mixing device 138, while in other embodiments, only one of the chambers 106 A-E may include a mixing device 138. For example, the first chamber 106A may include a mixing device 138 while only one other chamber in the tank assembly 106 may utilize a mixing device 138. For example,
[0062] Level sensors may be used to determine a level of a polymer solution in one or more of the mixing chambers and may communicate with a system controller, which controls various system operations. For example, in response to a level sensor's reading, the controller may increase or decrease a rate at which wetted polymer is added to the first mixing chamber 106A.
[0063] Although five chambers 106 A-E are shown in the tank assembly 106, any number of chambers can be used. For example, the number of chambers may depend on a property associated with the polymer hydration process like a minimum or maximum desired polymer concentration or fluid pressure. Moreover, although the chambers are shown as being similarly sized, chamber size may differ within the tank assembly 106. Additionally, according to embodiments, the chambers 106A-E and baffles 122 may be configured to optimize progressive flow versus viscosity, and may be adjustable to progressive viscosity changes, relevant to flow (time) to hydrate (uncoil) the molecular chain. For example, in embodiments, the lower opening 124 may have a different size than the upper opening 126. Corresponding openings in adjacent tanks may have differing sizes. For example, the width of the baffle inlet may be <<inventors, can you describe how we size the inlet and outlet?>>.
[0064] In embodiments, the openings may be adjustable, manually and/or automatically, e.g., by moving a sliding wall panel up or down to enlarge or contract the opening. Embodiments may include a controller for facilitating a feedback control system that may be configured to automatically adjust the height and/or width of any one or more of the openings.
[0065]
[0066] In embodiments, the controller 402 is configured to cause the polymer wetting device 404 to activate and/or deactivate and/or control a rate at which the polymer wetting device provides the wetted polymer to the first mixing chamber. For example, in embodiments, the controller 402 may cause the polymer wetting device 404 to provide the wetted polymer to the first mixing chamber at a first rate, determine that a condition is satisfied; and, in response to determining that the condition is satisfied, provide the wetted polymer to the first mixing chamber at a second rate. That is, the percentage, by weight, of polymer to water may be changed in a stepwise fashion from an initial percentage to a second percentage. The change in the percentage, by weight, may be due to a condition such as an amount of time that has passed, a certain water quality (measure in water clarity), a viscosity of the polymer solution in one or more of the mixing chambers, an output rate of the down stream made-down polymer (e.g., the flowrate of polymer-water mixture exiting a final (or intermediate) chamber,a level of the polymer solution in the first mixing chamber and/or a level of the polymer solution in an additional mixing chamber, and/or the like. In additional/alternative embodiments, the condition may be a high or low threshold, a range, a time period, and/or the like. The condition may be predetermined, dynamic, user-configurable, and/or the like.
[0067] In implementations, for example, the first rate may be greater than the second rate. In an aspects of the technology, the first and/or second rate may be no less than about 0.01 wt % and no greater than about 2.0 wt %, the first and/or second rate may be no less than about 1.0 wt % and no greater than about 2.0 wt, the first and/or second rate may be between 1.4 wt % and 1.9wt % (e.g., about 1.5 wt %, about 1.6% wt, about 1.7% wt, etc.). The operating environment 400 may include one or more level sensors 408, each disposed in a mixing chamber and configured to determine a level of polymer solution in the mixing chamber. The controller 402 may also be configured to control one or more mixing devices 406 disposed within the one or more mixing chambers. For example, in embodiments, a first mixing device may be disposed in a first mixing chamber, a second device may be disposed in a second mixing chamber, and/or the like. The controller 402 may be configured to activate/deactivate the one or more mixing devices, control a rate at which each mixing device operates, and/or the like. For example, in embodiments, the controller 402 may be configured to cause a first mixing device to mix a volume of polymer solution more aggressively than at least one additional mixing device (e.g., a mixing device in a second mixing chamber), avoiding shear or damage to the polymer solution as it progressively hydrates. The first mixing device may be configured to mix the volume of polymer solution by rolling the volume of polymer solution within the first mixing chamber, while an additional mixing device may be configured to mix the volume of polymer solution by stirring the volume of polymer solution within an additional mixing chamber.
[0068] The controller 402 may be configured to dynamically control the one or more mixing devices 406 in response to any number of determinations that the controller 402 may be configured to make, based on one or more conditions of the system. Although not illustrated, the operating environment 400 may include any number of different types of sensors configured to determine any number of different conditions of the system such as, for example, temperature, fluid pressure, viscosity, flow rates, polymer concentrations, and/or the like. The sensors may include, for example, thermometers, samplers, optical sensors, transducers, and/or the like.
[0069] The controller 402 may also be configured to control one or more baffle adjustors 410. A baffle adjustor 410 may be associated with one or more baffles and may be configured to adjust one or more dimensions of one or more baffle inlets.
[0070] Turning briefly to
[0071] The baffle adjustor 702 may include an actuator 720 configured to move a first arm 722 that is coupled to a first baffle door 724 to adjust the size of the baffle inlet 716, and a second arm 726 that is coupled to a second baffle door 728 to adjust the size of the baffle outlet 718. In embodiments, each baffle door 724 and 728 may be coupled to a different actuator 720. According to embodiments, any number of different types of mechanisms may be used to adjust the sizes of the baffle inlet 716 and outlet 718. In embodiments, the controller 402 depicted in
[0072] Returning to
[0073] The controller 402 may be configured to receive, and act in accordance with, input from a user and/or other device (e.g., via the control panel 412). The control panel 412 may be, be similar to, include, or be included in any control panel, controlling computing device, control station, and/or the like, associated with one or polymer hydration (e.g., make-down) systems, as described herein. In embodiments, the control panel 412 may include any number of different types of input devices and/or output devices. The controller 402 may be disposed in, integrated with, and/or coupled to (e.g., physically and/or communicatively) the control panel 412. The control panel 412 may include panel indicator lights, security components, manual controls, and/or the like, that enable a user to obtain information and/or control any number of various aspects of the illustrative operating environment 400.
[0074] The illustrative operating environment 400 shown in
[0075] According to various embodiments of the disclosed subject matter, any number of the components depicted in
[0076] In embodiments, the computing device 500 includes a bus 502 that, directly and/or indirectly, couples the following devices: a processor 504, a memory 506, an input/output (I/O) port 508, an I/O component 510, and a power supply 512. Any number of additional components, different components, and/or combinations of components may also be included in the computing device 500. The I/O component 510 may include a presentation component configured to present information to a user such as, for example, a display device, a speaker, a printing device, and/or the like, and/or an input component such as, for example, a microphone, a joystick, a satellite dish, a scanner, a printer, a wireless device, a keyboard, a pen, a voice input device, a touch input device, a touch-screen device, an interactive display device, a mouse, and/or the like.
[0077] The bus 502 represents what may be one or more busses (such as, for example, an address bus, data bus, or combination thereof). Similarly, in embodiments, the computing device 500 may include a number of processors 504, a number of memory components 506, a number of I/O ports 508, a number of I/O components 510, and/or a number of power supplies 512. Additionally any number of these components, or combinations thereof, may be distributed and/or duplicated across a number of computing devices.
[0078] In embodiments, the memory 506 includes computer-readable media in the form of volatile and/or nonvolatile memory and may be removable, nonremovable, or a combination thereof. Media examples include Random Access Memory (RAM); Read Only Memory (ROM); Electronically Erasable Programmable Read Only Memory (EEPROM); flash memory; optical or holographic media; magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices; data transmissions; and/or any other medium that can be used to store information and can be accessed by a computing device such as, for example, quantum state memory, and/or the like. In embodiments, the memory 506 stores computer-executable instructions 514 for causing the processor 504 to implement aspects of embodiments of system components discussed herein and/or to perform aspects of embodiments of methods and procedures discussed herein.
[0079] The computer-executable instructions 514 may include, for example, computer code, machine-useable instructions, and the like such as, for example, program components capable of being executed by one or more processors 504 associated with the computing device 500. Program components may be programmed using any number of different programming environments, including various languages, development kits, frameworks, and/or the like. Some or all of the functionality contemplated herein may also, or alternatively, be implemented in hardware and/or firmware.
[0080] The illustrative computing device 500 shown in
[0081] As described above, embodiments of the subject matter disclosed herein include systems of mixing chambers for hydrating polymers.
[0082] Embodiments of the method 600 include providing a volume of fluid to a first mixing chamber (block 602) and providing a wetted polymer solution to the first mixing chamber to create a volume of polymer solution (block 604). In embodiments, providing the wetted polymer to the first mixing chamber may include providing the wetted polymer to the first mixing chamber at a first rate, determining that a condition is satisfied, and, in response to determining that the condition is satisfied, providing the wetted polymer to the first mixing chamber at a second rate. In embodiments, the first rate may be greater than the second rate; and the second rate may be no less than about 0.01 wt % and no greater than about 2.0 wt %. In embodiments, the second rate may be no less than about 1.0 wt % and no greater than about 2.0 wt %. In embodiments, the second rate may be, for example, between 1.4 wt % and 1.9wt % (e.g., about 1.5 wt %). The condition may include, for example, at least one of an amount of time and a level of the polymer solution in the first mixing chamber.
[0083] As shown in
[0084] Various modifications and additions can be made to the exemplary embodiments discussed without departing from the scope of the present disclosure. For example, while the embodiments described above refer to particular features, the scope of this disclosure also includes embodiments having different combinations of features and embodiments that do not include all of the above described features.