CN103520968B - Gas-water backwashing regeneration process for filter tank for oilfield produced water treatment - Google Patents
Gas-water backwashing regeneration process for filter tank for oilfield produced water treatment Download PDFInfo
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- CN103520968B CN103520968B CN201310521647.4A CN201310521647A CN103520968B CN 103520968 B CN103520968 B CN 103520968B CN 201310521647 A CN201310521647 A CN 201310521647A CN 103520968 B CN103520968 B CN 103520968B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000011001 backwashing Methods 0.000 title claims abstract description 31
- 230000008929 regeneration Effects 0.000 title claims abstract description 22
- 238000011069 regeneration method Methods 0.000 title claims abstract description 22
- 238000001914 filtration Methods 0.000 claims abstract description 39
- 238000005406 washing Methods 0.000 claims abstract description 20
- 238000011084 recovery Methods 0.000 claims abstract description 7
- 230000001105 regulatory effect Effects 0.000 claims abstract description 7
- 238000010926 purge Methods 0.000 claims description 20
- 239000000706 filtrate Substances 0.000 claims description 19
- 238000005516 engineering process Methods 0.000 claims description 12
- 230000001276 controlling effect Effects 0.000 claims description 11
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000011835 investigation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 8
- 239000006004 Quartz sand Substances 0.000 abstract description 4
- 239000010453 quartz Substances 0.000 abstract description 4
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 abstract 3
- 239000010410 layer Substances 0.000 abstract 2
- 239000002356 single layer Substances 0.000 abstract 2
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 239000003921 oil Substances 0.000 description 15
- 239000008187 granular material Substances 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 9
- 239000012535 impurity Substances 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000009287 sand filtration Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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- Filtration Of Liquid (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The invention relates to a filter tank gas-water backwashing regeneration process in oilfield produced water treatment. The process comprises a gas washing flow and a water washing flow, wherein the gas backwashing with 2 gas flow gradients is firstly carried out on the filter material in a filter tank according to a gas washing flow program, and then the water backwashing with 1 water flow gradient is carried out on the filter material in the filter tank; the air washing process comprises the following steps: air compressor → air pressure stabilizing tank → air flow control valve group → single tank air inlet switch valve → air enters into the filter tank → back flush drain valve → low level recovery water tank; the water washing process comprises the following steps: the backwashing variable-frequency water pump → the water flow regulating valve group → the single-tank backwashing water inlet switch valve → water enters the filtering tank → the backwashing water discharge valve → the backwashing water recovery tank. The process can effectively realize the regeneration of the granular filter materials of a single-layer quartz sand filter tank, a single-layer magnetite filter tank, a quartz sand-magnetite double-layer filter material filter tank, a glauconite-magnetite double-layer filter material filter tank and the like in the oilfield produced water treatment process.
Description
Technical field
The present invention relates to Treatment Techniques of Extracted Water from Crude Oil Production, specifically a kind of oil field produced water treatment filtering tank air-water backwashing regeneration technology being applicable to oil field extracted water filtering tank media regeneration.
Background technology
The granule filter material class filtering tank used in early stage oil-contaminated water of oil field treatment process.After adopting its filter, water directly carries out the mature technology mode of filtering tank filtrate backwash regeneration always, and which have operation technological process simple, be easy to the advantages such as management.But along with oil field development enters later stage, after oil field adopts chemical flooding wet goods tertiary oil recovery mining type, owing to containing polymer in recovered water, the pollution layer that granule filter material is formed after longtime running filters has the feature of viscosity height and strong adhesion, adopt single water backwashing regeneration, be difficult to the compositions such as the sump oil being trapped in the integument that filter material surface is formed, impurity and polymer to rinse out, filtrate cannot be effectively restored, thus filtration cutoff performance is reduced; In addition in filter process, pollute filtrate because easily forming containing polymer harden block and cake layer in water, the partial fracture of cake layer is easily produced when backwash, increase back washing strength and also easily cause mixed layer and filterins media run-off etc. between bedding and padding and filtrate, filtrate can not be made to obtain backwash and regeneration thoroughly, and then the quality of rear water quality is filtered in impact.The mode of oil field ripe water backwashing regenerated granule filtrate class filter is described thus, has occurred unconformable problem.Therefore, exploitation can solve granule filter material backwash regeneration techniques in latter period of oilfield development chemical displacement of reservoir oil produced water treatment technique, meets the feature that latter period of oilfield development water quality changes significant.
Summary of the invention
For the deficiency of existing oil-contaminated water of oil field treatment process, the invention provides a kind of oil field produced water treatment filtering tank air-water backwashing regeneration technology.This technique effectively can realize the regeneration of the granule filter material of individual layer quartz sand filtration tank in treatment Technology for Petroleum Water Flooding, individual layer magnetic iron ore filtering tank, quartz sand-magnetic iron ore double-layer filter material filtering tank, glauconite-magnetic iron ore double-layer filter material filtering tank etc.
Technical scheme of the present invention is: a kind of oil field produced water treatment filtering tank air-water backwashing regeneration technology, it is characterized in that: comprise air purge flow process and washing process, first according to air purge process program, the filtrate in filtering tank is carried out to the gas backwash of 2 tolerance gradients, and then the filtrate in filtering tank is carried out to the water backwashing of the water yield of 1 gradient;
Above-mentioned air purge flow process is: air compressor machine → air vacuum tank → throughput controlling valve group → mono-canister incoming gas switch valve → gas enters filtering tank, and interior → backwash draining valve → low level reclaims pond;
The technological process of above-mentioned washing is: backwash variable frequency pump → Water flow adjusting valve group → mono-tank backwash water inlet switch valve → water enters filtering tank, and water pot is reclaimed in interior → backwash draining valve → backwash.
Above-mentioned throughput controlling valve group comprises manual modulation valve, gas flowmeter, enters Computer display, throughput control valve and computer-controlled program, and adjustment order is: manual modulation valve → gas flowmeter → enter Computer display → throughput control valve to control to adjust tolerance by computer.
What above-mentioned air-water backwashing recovery control routine adopted is the software control procedure controlling and regulate air purge two apertures to control step and a washing maximum backwash flow; Regulated by the control valve of throughput control valve group to carry out two apertures, three tolerance adjustments that tolerance 0 → the first aperture controls step → the second aperture control step → 0 during air purge; It is the secondary runoff investigation being regulated the backwash water yield 0 → maximum backwash flow → 0 by the frequency converter of backwash pump during washing; In addition, in above-mentioned software control procedure, air purge first aperture controls step and does not whenever allow change, and air purge second aperture controls step and the maximum backwash flow of washing can carry out the adjustment of aperture size, time length and uninterrupted according to production actual conditions.
The invention has the beneficial effects as follows: the air-water backwashing utilized in above-mentioned technique, its principle be air carry out granule filter material regeneration time, between filtrate, frictional force is larger, along with the increase of air velocity, bubble adds the frictional force to filtering material particle, under airflow function and between filtrate strong hit and friction under and bubble rise time and filtering material particle frictional force acting in conjunction under, the impurity that filtrate adheres to and pollutant are peeled off removal, then in the rinsing by water, granule filter material is made to recover initial surface.Regenerate in whole process at air-water backwashing, filter material layer can not only be retained, also do not adhere to greasy dirt on filtrate and impurity rinses, and can also constantly the greasy dirt adhered on filtrate and impurity to be rinsed.After air-water backwashing regeneration, the remaining oil content of filter material surface reaches 0.04%, there is features simple and practical process compared with other regeneration techniques, operate one-key operation, regenerate totally thoroughly, drop into the advantages such as little benefit is large, effectively realize the regeneration of the granule filter material of individual layer quartz sand filtration tank in treatment Technology for Petroleum Water Flooding, individual layer magnetic iron ore filtering tank, quartz sand-magnetic iron ore double-layer filter material filtering tank, glauconite-magnetic iron ore double-layer filter material filtering tank etc.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described:
As shown in Figure 1, this oil field produced water treatment filtering tank air-water backwashing regeneration technology, comprise air purge flow process and washing process, first according to air purge process program, the filtrate in filtering tank is carried out to the gas backwash of 2 tolerance gradients, and then the filtrate in filtering tank is carried out to the water backwashing of the water yield of 1 gradient;
First utilize air compressor machine → air vacuum tank → throughput controlling valve group → mono-canister incoming gas switch valve → gas to enter in filtering tank → backwash draining valve → low level reclaims two gradient tolerance are carried out in pond flushing to filtrate;
The technological process of above-mentioned washing is: backwash variable frequency pump → Water flow adjusting valve group → mono-tank backwash water inlet switch valve → water enters filtering tank, and water pot carries out 1 gradient water yield flushing to filtrate is reclaimed in interior → backwash draining valve → backwash, whole process, by set programme-control, realizes the automatic backwash regeneration of the granule filter material of individual layer quartz sand filtration tank in treatment Technology for Petroleum Water Flooding, individual layer magnetic iron ore filtering tank, quartz sand-magnetic iron ore double-layer filter material filtering tank, glauconite-magnetic iron ore double-layer filter material filtering tank etc.
Above-mentioned throughput controlling valve group comprises manual modulation valve, gas flowmeter, enters Computer display, throughput control valve and computer-controlled program, and adjustment order is: manual modulation valve → gas flowmeter → enter Computer display → throughput control valve to control to adjust tolerance by computer.
What above-mentioned air-water backwashing recovery control routine adopted is the software control procedure controlling and regulate air purge two apertures to control step and a washing maximum backwash flow; Regulated by the control valve of throughput control valve group to carry out two apertures, three tolerance adjustments that tolerance 0 → the first aperture controls step → the second aperture control step → 0 during air purge; It is the secondary runoff investigation being regulated the backwash water yield 0 → maximum backwash flow → 0 by the frequency converter of backwash pump during washing; In addition, in above-mentioned software control procedure, air purge first aperture controls step and does not whenever allow change, and air purge second aperture controls step and the maximum backwash flow of washing can carry out the adjustment of aperture size, time length and uninterrupted according to production actual conditions.
Air-water backwashing recovery control routine operating process (single tank backwash reproducer):
(1), filtered inlet valve, filtering outlet valve is closed successively;
(2) backwash outlet valve is opened;
(3) open the gas stop valve of single canister incoming gas valve, crack throughput control valve, closedown Water flow adjusting valve group simultaneously, the ascent stage that throughput control valve starts to regulate gas backwash to regenerate, the first aperture controls step, the second aperture controls step, four change tolerance of descending branch (the first aperture controls and the second aperture controls to be two opening values of the gas backwash flow after being tested by air compressor machine and control valve), then closed gas flow adjustable valve, the gas stop valve of flow control valve group of fetching boiling water;
(4) backwash inlet valve is opened; Backwash pump frequency converter starts to regulate the ascent stage of water backwashing flow, maximum backwash flow, descending branch;
(5) air-water backwashing regeneration ending, closes backwash inlet valve, backwash outlet valve successively;
(6) filtering outlet valve, filtered inlet valve is opened successively.Enter normal filtration state;
(7) repeat 1-6 steps above, carry out the air-water backwashing regenerative operation of other filtering tank.
Claims (2)
1. an oil field produced water treatment filtering tank air-water backwashing regeneration technology, it is characterized in that: comprise air purge flow process and washing process, first according to air purge process program, the filtrate in filtering tank is carried out to the gas backwash of 2 tolerance gradients, and then the filtrate in filtering tank is carried out to the water backwashing of the water yield of 1 gradient;
Above-mentioned air purge flow process is: air compressor machine → air vacuum tank → throughput controlling valve group → mono-canister incoming gas switch valve → gas enters filtering tank, and interior → backwash draining valve → low level reclaims pond;
Above-mentioned washing process is: backwash variable frequency pump → discharge controlling valve group → mono-tank backwash water inlet switch valve → water enters filtering tank, and water pot is reclaimed in interior → backwash draining valve → backwash;
What air-water backwashing recovery control routine adopted is the software control procedure controlling and regulate air purge two gradients to control step and a washing maximum backwash flow; Regulated by the control valve of throughput controlling valve group to carry out two gradients, three tolerance adjustments that tolerance 0 → the first gradient controls step → the second gradient control step → 0 during air purge; It is the secondary runoff investigation being regulated the backwash water yield 0 → maximum backwash flow → 0 by the frequency converter of backwash variable frequency pump during washing; In addition, in above-mentioned software control procedure, air purge first gradient controls step and does not whenever allow change, and air purge second gradient controls step and the maximum backwash flow of washing can carry out the adjustment of gradient magnitude, time length and uninterrupted according to production actual conditions.
2. oil field produced water treatment filtering tank air-water backwashing regeneration technology according to claim 1, it is characterized in that: above-mentioned throughput controlling valve group comprises manual modulation valve, gas flowmeter, enters Computer display, throughput control valve and computer-controlled program, and adjustment order is: manual modulation valve → gas flowmeter → enter Computer display → throughput control valve to control to adjust tolerance by computer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310521647.4A CN103520968B (en) | 2013-10-29 | 2013-10-29 | Gas-water backwashing regeneration process for filter tank for oilfield produced water treatment |
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| CN201310521647.4A CN103520968B (en) | 2013-10-29 | 2013-10-29 | Gas-water backwashing regeneration process for filter tank for oilfield produced water treatment |
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| CN103520968A CN103520968A (en) | 2014-01-22 |
| CN103520968B true CN103520968B (en) | 2016-02-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110104813A (en) * | 2019-05-24 | 2019-08-09 | 中国石油天然气股份有限公司 | Sequencing batch settling and filtering device for oilfield produced water and treatment process thereof |
| CN115007572B (en) * | 2022-05-07 | 2023-11-24 | 大庆瑞雪石油科技开发有限公司 | Screen pipe blocking and scale removal and filter material oil removal cleaning process for sewage filtering tank of combined station |
| CN117534229A (en) * | 2023-08-07 | 2024-02-09 | 苏州里欧环保工程有限公司 | Phosphoric acid filtration equipment for water treatment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2741635Y (en) * | 2004-04-06 | 2005-11-23 | 大庆油田有限责任公司 | Air-water back flushing filter |
| CN101219294A (en) * | 2007-09-25 | 2008-07-16 | 中国农业科学院农田灌溉研究所 | Air entrainment flusher of micro-irrigation sandrock filter |
| CN101620445A (en) * | 2009-08-13 | 2010-01-06 | 沈阳市兴大通仪器仪表厂 | Oil, water and air tri-phase flow stabilization system |
| CN202942699U (en) * | 2012-12-19 | 2013-05-22 | 大庆高新区百世环保科技开发有限公司 | Gas-liquid and machinery combined stirring-backwashing filter device for highly-polymer-containing wastewater of oil field |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6087B2 (en) * | 1982-01-18 | 1985-01-05 | 扶桑建設工業株式会社 | Surface cleaning method for pressure-type multilayer filtration basin |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2741635Y (en) * | 2004-04-06 | 2005-11-23 | 大庆油田有限责任公司 | Air-water back flushing filter |
| CN101219294A (en) * | 2007-09-25 | 2008-07-16 | 中国农业科学院农田灌溉研究所 | Air entrainment flusher of micro-irrigation sandrock filter |
| CN101620445A (en) * | 2009-08-13 | 2010-01-06 | 沈阳市兴大通仪器仪表厂 | Oil, water and air tri-phase flow stabilization system |
| CN202942699U (en) * | 2012-12-19 | 2013-05-22 | 大庆高新区百世环保科技开发有限公司 | Gas-liquid and machinery combined stirring-backwashing filter device for highly-polymer-containing wastewater of oil field |
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