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CA2533953A1 - Fluid treatment process and apparatus - Google Patents

Fluid treatment process and apparatus

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Publication number
CA2533953A1
CA2533953A1 CA002533953A CA2533953A CA2533953A1 CA 2533953 A1 CA2533953 A1 CA 2533953A1 CA 002533953 A CA002533953 A CA 002533953A CA 2533953 A CA2533953 A CA 2533953A CA 2533953 A1 CA2533953 A1 CA 2533953A1
Authority
CA
Canada
Prior art keywords
zone
solids
thickening
clarifying
fluid stream
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002533953A
Other languages
French (fr)
Other versions
CA2533953C (en
Inventor
Kevin Slough
Troy Lupul
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qmax Solutions Inc
Original Assignee
Qmax Solutions Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qmax Solutions Inc filed Critical Qmax Solutions Inc
Priority to CA2533953A priority Critical patent/CA2533953C/en
Publication of CA2533953A1 publication Critical patent/CA2533953A1/en
Application granted granted Critical
Publication of CA2533953C publication Critical patent/CA2533953C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/06—Arrangements for treating drilling fluids outside the borehole
    • E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
    • E21B21/065—Separating solids from drilling fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0018—Separation of suspended solid particles from liquids by sedimentation provided with a pump mounted in or on a settling tank
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0045—Plurality of essentially parallel plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
    • B01D21/0057—Settling tanks provided with contact surfaces, e.g. baffles, particles with counter-current flow direction of liquid and solid particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/0096—Safety mechanisms specially adapted for settling tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B01D21/04—Settling tanks with single outlets for the separated liquid with moving scrapers
    • B01D21/06—Settling tanks with single outlets for the separated liquid with moving scrapers with rotating scrapers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/02—Settling tanks with single outlets for the separated liquid
    • B01D21/08—Settling tanks with single outlets for the separated liquid provided with flocculating compartments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/2405—Feed mechanisms for settling tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/24—Feed or discharge mechanisms for settling tanks
    • B01D21/245—Discharge mechanisms for the sediments
    • B01D21/2477—Centrifugal pumps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
    • B01D21/262—Separation of sediment aided by centrifugal force or centripetal force by using a centrifuge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D21/00—Separation of suspended solid particles from liquids by sedimentation
    • B01D21/30—Control equipment
    • B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2221/00—Applications of separation devices
    • B01D2221/04—Separation devices for treating liquids from earth drilling, mining

Landscapes

  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

Processes and apparatuses for treating drilling fluid by passing the fluid through a separator including a clarifying zone and a thickening zone, the clarifying zone having inclined plates and the thickening zone having at least one wall with an angle of less than about 60° . The separator may optionally include an agglomeration zone and a removal zone.

Claims (98)

1. A process for treating drilling fluid containing solids and liquids to produce a clarified liquid, comprising:

(a) introducing a stream of drilling fluid into at least one primary separator to separate first size solids and produce a solids fraction and a secondary fluid stream comprising liquids and second size solids;

(b) providing a secondary separator, the secondary separator comprising an upper clarifying zone having a plurality of spaced apart clarifying plates and a lower thickening zone having a lower end, said lower end having a downwardly diminishing cross-sectional area and comprising at least one wall angled no more than 60°, said upper clarifying zone and lower thickening zone being in fluid communication with each other;

(c) introducing the secondary fluid stream into the clarifying zone at a position at or below a top end of the clarifying plates and allowing the secondary fluid stream to flow among the clarifying plates; and, (d) allowing the second size solids to contact the clarifying plates and settle downwardly from the clarifying plates into the thickening zone to form a settled solids zone in the lower end of the thickening zone and a clarified liquid zone in the clarifying zone.
2. The process of claim 1, wherein the angle of the at least one wall is in the range of 45° and 60°.
3. The process of claim 1, further comprising removing the clarified liquid from the clarifying zone by means of a launder.
4. The process of claim 1, further comprising removing the settled solids from the thickening zone.
5. The process of claim 4, whereby the settled solids are removed by means of an auger having a first end inside the thickening zone and a second end outside the secondary separator, the auger rotatingly displacing the settled solids from the first end to the second end.
6. The process of claim 5, further comprising providing an auger motor for varying auger rotation speed.
7. The process of claim 4, whereby the settled solids are removed by means of a solids pump and a solids tank, the solids pump pumping the settled solids into the solids tank.
8. The process of claim 7, further comprising removing the solids fraction from the at least one primary separator into the solids tank.
9. The process of claim 1, wherein the clarifying plates are inclined.
10. The process of claim 1, further comprising providing an agglomerant tank for introducing agglomerant into the secondary fluid stream prior to introducing the secondary fluid stream into the secondary separator.
11. The process of claim 1, wherein the secondary separator further comprises an agglomeration zone upstream of and in fluid communication with the clarifying zone, said process further comprising introducing the secondary fluid stream into the agglomeration zone for mixing agglomerant with the secondary fluid stream and maintaining the secondary fluid stream in the agglomeration zone for a residence time sufficient to permit the second size solids to agglomerate.
12. The process of claim 11, wherein the agglomeration zone comprises an intermixing sub-zone for rapid mixing of agglomerant with the secondary fluid stream.
13. The process of claim 1, wherein the at least one primary separator is a shale shaker.
14. The process of claim 1, wherein the at least one primary separator is a hydrocyclone.
15. The process of claim 1, wherein the at least one primary separator is a centrifuge.
16. The process of claim 1, further comprising the step of introducing the secondary fluid stream into a pump box prior to introducing the secondary fluid stream into the secondary separator.
17. A process for treating drilling fluid containing solids and liquids to produce a clarified liquid, comprising:

(a) introducing a stream of drilling fluid into a primary separator to separate first size solids and produce a solids fraction and a secondary fluid stream comprising liquids and second size solids;

(b) providing a secondary separator, the secondary separator comprising an agglomeration zone, an upper clarifying zone having a plurality of spaced apart clarifying plates and a lower thickening zone, said clarifying zone
18 being in fluid communication with both the agglomeration zone and the lower thickening zone, said lower thickening zone comprising a lower end having a downwardly diminishing cross-sectional area and at least one wall and a downwardly diminishing cross-sectional area, and wherein the at least one wall is angled no more than 60°;

(c) introducing the secondary fluid stream into the agglomeration zone, mixing agglomerant with the secondary fluid stream in the agglomeration zone to produce a tertiary fluid stream, and maintaining the tertiary fluid stream in the agglomeration zone for a residence time sufficient to permit the second size solids to agglomerate;

(d) introducing the tertiary fluid stream into the clarifying zone at a position at or below a top end of the clarifying plates and allowing the tertiary fluid stream to flow among the clarifying plates; and, (e) allowing the second size solids to contact the clarifying plates and settle downwardly from the clarifying plates into the thickening zone to form a settled solids zone in the lower end of the thickening zone and a clarified liquid zone in the clarifying zone.

18. The process of claim 17, further comprising providing thickening pickets in the thickening zone and passing the thickening pickets through the settled solids and for releasing trapped clarified liquid.
19. The process of claim 17, further comprising removing the clarified liquid from the clarifying zone by means of a launder.
20. The process of claim 17, further comprising removing the settled solids from the thickening zone.
21. The process of claim 20, wherein the settled solids are removed by means of an auger having a first end inside the thickening zone and a second end outside the secondary separator, the auger rotatingly displacing the settled solids from the first end to the second end.
22. The process of claim 21, further comprising providing an auger motor for varying auger rotation speed.
23. The process of claim 17, whereby the settled solids are removed by means of a solids pump and a solids tank, the solids pump pumping the settled solids into the solids tank.
24. The process of claim 22, further comprising removing the solids fraction from the at least one primary separator into the solids tank.
25. The process of claim 17, wherein the clarifying plates are inclined.
26. The process of claim 17, further comprising introducing agglomerant into the secondary fluid stream prior to introducing the secondary fluid stream into the agglomeration zone.
27. The process of claim 26, wherein the agglomeration zone further comprises an intermixing sub-zone for rapid mixing of agglomerant with the secondary fluid stream.
28. The process of claim 17, wherein the at least one primary separator is a shale shaker.
29. The process of claim 17, wherein the at least one primary separator is a hydrocyclone.
30. The process of claim 17, wherein the at least one primary separator is a centrifuge.
31. The process of claim 17, further comprising the step of introducing the secondary fluid stream into a pump box prior to introducing the secondary fluid stream into the secondary separator.
32. A process of treating a primary fluid stream containing solids and liquids to produce a clarified liquid, comprising:

(a) introducing the primary fluid stream into a primary separator to separate first size solids and produce a solids fraction and a secondary fluid stream comprising liquids and second size solids;

(b) providing a secondary separator, the secondary separator comprising:
(i) an agglomeration zone;

(ii) an upper clarifying zone having a plurality of spaced apart clarifying plates and being in fluid communication with the agglomeration zone;

(iii) a lower thickening zone in fluid communication with the clarifying zone having a lower end with a downwardly diminishing cross-sectional area, the lower end comprising at least one wall being angled less than about 45° and a displacer disposed proximally parallel to the at least one wall; and (iv) a removal zone in communication with the lower end of the thickening zone;

(c) introducing the secondary fluid stream into the agglomeration zone, mixing agglomerant with the secondary fluid stream in the agglomeration zone to produce a tertiary fluid stream, and maintaining the tertiary fluid stream in the agglomeration zone for a residence time sufficient to permit the second size solids to agglomerate;

(d) introducing the tertiary fluid stream into the clarifying zone at a position at or below a top end of the clarifying plates and allowing the tertiary fluid stream to flow among the clarifying plates;

(e) allowing the second size solids to contact the clarifying plates and settle downwardly from the clarifying plates into the thickening zone and form settled solids in the lower end; and, (f) moving the displacer along the at least one wall to urge the settled solids towards the removal zone.
33. The process of claim 32, further comprising providing in the thickening zone thickening pickets, the thickening pickets passing through the settled solids and releasing trapped clarified liquid.
34. The process of claim 32, further comprising removing the clarified liquid from the clarifying zone by means of a launder.
35. The process of claim 32, further comprising removing the settled solids from the thickening zone.
36. The process of claim 35, further comprising providing an auger having a first end inside the thickening zone and a second end outside the secondary separator, the auger rotatingly displacing the settled solids from the first end to the second end.
37. The process of claim 36, further comprising providing an auger motor for varying auger rotation speed.
38. The process of claim 35, further comprising providing a solids pump and a solids tank, the solids pump pumping the settled solids into the solids tank.
39. The process of claim 38, wherein the solids pump comprises a varying speed motor.
40. The process of claim 38, further comprising removing the solids fraction from the at least one primary separator into the solids tank.
41. The process of claim 32, wherein the clarifying plates are inclined.
42. The process of claim 32, further comprising introducing agglomerant into the secondary fluid stream prior to introducing the secondary fluid stream into the agglomeration zone.
43. The process of claim 32, wherein the agglomeration zone further comprises an intermixing sub-zone for rapid mixing of agglomerant with the secondary fluid stream.
44. The process of claim 32, wherein the at least one primary separator is a shale shaker.
45. The process of claim 32, wherein the at least one primary separator is a hydrocyclone.
46. The process of claim 32, wherein the at least one primary separator is a centrifuge.
47. The process of claim 32, further comprising the step of introducing the secondary fluid stream into a pump box prior to introducing the secondary fluid stream into the secondary separator.
48. The process of claim 32, wherein the lower end of the lower thickening zone comprises a frusto-conical configuration and the displacer is selected from the group consisting of rotational scrapers, rotational sweepers, and rotational plows.
49. The process of claim 37, further comprising providing a settled solids sensor operably coupled with the auger motor, the sensor sensing characteristics of the settled solids and inducing variation of the auger motor speed in response thereto.
50. The process of claim 38, further comprising providing a settled solids sensor operably coupled with the solids pump, the sensor sensing characteristics of the settled solids and inducing variation of the solids pump speed in response thereto.
51. An apparatus for treating fluid comprising solids and liquids to produce clarified fluid, comprising:

(a) an agglomeration zone for mixing agglomerant into the fluid to agglomerate the solids;

(b) a clarification zone in fluid communication with the agglomeration zone comprising a plurality of spaced apart clarifying plates to promote the settling of the solids from the clarification zone to produce clarified fluid;

and (c) a thickening zone disposed below and in fluid communication with the clarifying zone for receiving the settling solids and comprising at least one wall defining a downwardly diminishing cross-sectional area, the at least one wall being angled no more than 60°.
52. The apparatus of claim 51 further comprising a removal means disposed above the plates for removing clarified fluid.
53. The apparatus of claim 52, wherein the removal means comprises at least one launder.
54. The apparatus of claim 51, wherein the thickening zone further comprises thickening pickets for passing through and releasing liquids and gases from settled solids in the thickening zone.
55. The apparatus of claim 51, further comprising a removal zone for collecting and removing settled solids, the removal zone being disposed proximal to a bottom edge of the at least one wall of the thickening zone.
56. The apparatus of claim 51, wherein the angle of the at least one wall is no more than 45°.
57. The apparatus of claim 51, further comprising a diffuser disposed between the agglomeration zone and the clarification zone and having a plurality of ports sized to permit passage of agglomerated solids.
58. The apparatus of claim 53, wherein the removal zone comprises an auger having a first end extending into the removal zone and a second end outside the removal zone, the auger for rotatingly displacing the settled solids from the first end to the second end.
59. The apparatus of claim 58, further comprising a sensor for sensing and transmitting information about at least one characteristic of the settled solids, said characteristic being selected from the class consisting of density, thickness, and mass, and a receiver for receiving said information and for varying the auger's rotation speed in accordance with said information.
60. The apparatus of claim 59, further comprising a removal pump for removing settled solids from the removal zone.
61. The apparatus of claim 60, further comprising a sensor for sensing and transmitting information about at least one characteristic of the settled solids, said characteristic being selected from the class consisting of density, thickness, and mass, and a receiver for receiving said information and for varying the pump's speed in accordance with said information.
62. The apparatus of claim 55, wherein the agglomeration zone further comprises an energy displacement sub-zone for dissipating energy of the fluid.
63. An apparatus for treating fluid comprising solids and liquid to produce clarified fluid, comprising:

(a) an agglomeration zone for mixing agglomerant into the fluid to agglomerate the solids;

(b) a clarification zone in fluid communication with the agglomeration zone comprising a plurality of spaced apart clarifying plates to promote the settling of solids from the clarification zone to produce clarified fluid;

(c) a diffuser disposed between the agglomeration zone and the clarification zone and having a plurality of ports sized to permit passage of agglomerated solids;

(d) a thickening zone disposed below and in fluid communication with the clarifying zone for receiving for receiving the settling solids, the thickening zone comprising at least one wall defining a downwardly diminishing cross-sectional area, the at least one wall being angled no more than 45 , and a displacer disposed proximally parallel to the wall for displacing solids from the thickening zone wall; and (e) a removal zone for collecting and removing settled solids, the removal zone being disposed proximal to a bottom edge of the at least one wall of the thickening zone.
64. The apparatus of claim 63, further comprising thickening pickets for passing through and releasing liquids and gases from settled solids in the thickening zone.
65. The apparatus of claim 63, wherein the removal zone comprises an auger having a first end extending into the removal zone and a second end outside the removal zone, the auger for rotatingly displacing the settled solids from the first end to the second end.
66. The apparatus of claim 64, further comprising a sensor for sensing and transmitting information about at least one characteristic of the settled solids, said characteristic being selected from the class consisting of density, thickness, and mass, and a receiver for receiving said information and varying the auger's rotation speed in accordance with said information.
67. The apparatus of claim 63, further comprising a removal pump for removing settled solids from the removal zone.
68. The apparatus of claim 67, further comprising a sensor for sensing and transmitting information about at least one characteristic of the settled solids, said characteristic being selected from the class consisting of density, thickness, and mass, and a receiver for receiving said information and varying the removal pump's removal speed in accordance with said information.
69. The apparatus of claim 63, wherein the agglomeration zone further comprises an energy displacement sub-zone for dissipating energy of the fluid.
70. The apparatus of claim 63, wherein the thickening zone wall comprises a frusto-conical configuration and the displacer is selected from the group consisting of rotational scrapers, rotational sweepers, and rotational plows.
71. An apparatus for treating fluid comprising solids and liquids to produce clarified fluid, comprising:

(a) a clarification zone comprising a plurality of spaced inclined clarifying plates to promote the settling of the solids from the clarification zone to produce clarified fluid;

(b) a thickening zone disposed below and in fluid communication with the clarification zone for receiving the settling solids, the thickening zone comprising at least one wall defining a downwardly diminishing cross-sectional area, the at least one wall being angled no more than 45°, and a displacer disposed proximally parallel to the wall for displacing solids from the thickening zone wall; and, (c) a removal zone for collecting and removing settled solids, the removal zone being disposed proximal to a bottom edge of the at least one wall of the thickening zone.
72. The apparatus of claim 71, further comprising an agglomeration zone for mixing agglomerant with the fluid to agglomerate the solids, the agglomeration zone being disposed upstream of the clarification zone.
73. The apparatus of claim 72, further comprising a diffuser disposed between the agglomeration zone and the clarification zone and having a plurality of ports sized to permit passage of agglomerated solids.
74. The apparatus of claim 71, wherein the thickening zone wall comprises a frusto-conical configuration and the displacer is selected from the group consisting of rotational scrapers, rotational sweepers, and rotational plows.
75. The apparatus of claim 71, wherein the displacer further comprising thickening pickets for passing through and releasing liquids and gases from settled solids in the thickening zone.
76. The apparatus of claim 71, wherein the removal zone comprises an auger having a first end extending into the removal zone and a second end outside the removal zone, the auger for rotatingly displacing the settled solids from the first end to the second end.
77. The apparatus of claim 71 further comprising a sensor for sensing and transmitting information about at least one characteristic of the settled solids, said characteristic being selected from the class consisting of density, thickness, and mass, and a receiver for receiving said information and varying the auger's rotation speed in accordance with said information.
78. The apparatus of claim 71, further comprising a removal pump for removing settled solids from the removal zone.
79. The apparatus of claim 78, further comprising a sensor for sensing and transmitting information about at least one characteristic of the settled solids, said characteristic being selected from the class consisting of density, thickness, and mass, and a receiver for receiving said information and varying the removal pump's removal speed in accordance with said information.
80. The apparatus of claim 71, wherein the agglomeration zone further comprises an energy displacement sub-zone for dissipating energy of the fluid.
81. A process of treating a primary fluid stream containing solids and liquids to produce a clarified liquid, comprising:

(a) introducing the primary fluid stream into a primary separator to separate first size solids and produce a solids fraction and a secondary fluid stream comprising liquids and second size solids;

(b) providing a secondary separator, the secondary separator comprising:

(i) an upper clarifying zone having a plurality of spaced apart clarifying plates;

(ii) a lower thickening zone in fluid communication with the clarifying zone having a lower end comprising at least one wall and a downwardly diminishing cross-sectional area, wherein the at least one wall is angled no more than 45°, and a displacer disposed proximally parallel to the at least one wall, the upper clarifying zone and the lower thickening zone being in fluid communication with each other; and, (iii) a removal zone in communication with the lower end of the thickening zone;

(c) introducing the secondary fluid stream into the clarifying zone at a position at or below a top end of the clarifying plates and allowing the secondary fluid stream to flow among the clarifying plates;

(d) allowing the second size solids to contact the clarifying plates and settle downwardly from the clarifying plates into the thickening zone to form a settled solids in the lower end; and, (e) moving the displacer along the at least one wall to urge the settled solids towards the removal zone.
82. The process of claim 81, further comprising providing in the thickening zone thickening pickets, the thickening pickets passing through the settled solids and releasing trapped clarified liquid.
83. The process of claim 81, further comprising removing the clarified liquid from the clarifying zone by means of a launder.
84. The process of claim 81, further comprising removing the settled solids from the thickening zone.
85. The process of claim 84, whereby the settled solids are removed by means of an auger having a first end inside the thickening zone and a second end outside the secondary separator, the auger rotatingly displacing the settled solids from the first end to the second end.
86. The process of claim 85, further comprising providing an auger motor for varying auger rotation speed.
87. The process of claim 84, whereby the settled solids are removed by means of a solids pump and a solids tank, the solids pump pumping the settled solids into the solids tank.
88. The process of claim 81, further comprising removing the solids fraction from the at least one primary separator into the solids tank.
89. The process of claim 81, wherein the clarifying plates are inclined.
90. The process of claim 81, further comprising providing an agglomerant tank introducing agglomerant into the secondary fluid stream passing from the at least one primary separator into the secondary separator.
91. The process of claim 81, wherein the at least one primary separator is a shale shaker.
92. The process of claim 81, wherein the at least one primary separator is a hydrocyclone.
93. The process of claim 81, wherein the at least one primary separator is a centrifuge.
94. The process of claim 81, further comprising the step of introducing the secondary fluid stream into a pump box prior to introducing the secondary fluid stream into the secondary separator.
95. The process of claim 81, wherein the lower end of the lower thickening zone comprises a frusto-conical configuration and the displacer is selected from the group consisting of rotational scrapers, rotational sweepers, and rotational plows.
96. The process of claim 86, further comprising providing a settled solids sensor operably coupled with the auger motor, the sensor sensing characteristics of the settled solids and inducing variation of the auger motor speed in response thereto.
97. The process of claim 87, further comprising providing a settled solids sensor operably coupled with the solids pump, the sensor sensing characteristics of the settled solids and inducing variation of the solids pump speed in response thereto.
98. An energy displacement apparatus for fluid in a fluid flow path, the apparatus being housed in a fluid conduit and comprising a fluid inlet, a flow path obstacle disposed in substantially facing relation to the fluid inlet and having two ends, and at least one fluid outlet disposed proximally perpendicular to at least one end.
CA2533953A 2006-01-25 2006-01-25 Fluid treatment process and apparatus Active CA2533953C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA2533953A CA2533953C (en) 2006-01-25 2006-01-25 Fluid treatment process and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA2533953A CA2533953C (en) 2006-01-25 2006-01-25 Fluid treatment process and apparatus

Publications (2)

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CA2533953A1 true CA2533953A1 (en) 2007-07-25
CA2533953C CA2533953C (en) 2011-11-01

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9561452B2 (en) 2013-02-20 2017-02-07 H. Udo Zeidler Process and apparatus for treating drilling fluid
CN110104818A (en) * 2019-06-03 2019-08-09 张�杰 Normal temperature and pressure coagulation type egg Shape Plate Separator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9561452B2 (en) 2013-02-20 2017-02-07 H. Udo Zeidler Process and apparatus for treating drilling fluid
CN110104818A (en) * 2019-06-03 2019-08-09 张�杰 Normal temperature and pressure coagulation type egg Shape Plate Separator

Also Published As

Publication number Publication date
CA2533953C (en) 2011-11-01

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