CN202152289U - Air-floatation processing device for emulsified oil sewage - Google Patents
Air-floatation processing device for emulsified oil sewage Download PDFInfo
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- CN202152289U CN202152289U CN2011202409221U CN201120240922U CN202152289U CN 202152289 U CN202152289 U CN 202152289U CN 2011202409221 U CN2011202409221 U CN 2011202409221U CN 201120240922 U CN201120240922 U CN 201120240922U CN 202152289 U CN202152289 U CN 202152289U
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Abstract
The utility model relates to an air-floatation processing device for emulsified oil sewage, which is a circulation foam separating tower and comprises a lower-part bubbling section (1) and an upper-part foam section (2), wherein the lower-part bubbling section (1) is an air-lift inner circulation reactor which comprises an air distributor (4) containing the bottom of a flow guide cylinder, a multi-stage flow guide cylinder (5) at the middle part and a liquid discharge outlet (3) at the bottom; the upper-part foam section (2) is an overflow-groove type gas-liquid separator which comprises an overflow weir (13), an oil scraper (11) and an oil residue discharge outlet (6), and the oil scraper (11) is arranged at the upper edge at the top of the overflow weir. With the utility model, the once separation rate of the heavy emulsified oil can achieve more than 90%; and the sewage passes the circulation foam separating tower by one time, then the desorption of the emulsified oil and solid suspended matters can be realized, the deoiled sewage can be subjected to biological treatment directly, the recovery rate of the processed sewage is improved to be more than 98%, and no secondary sewage exists.
Description
Technical field
The utility model relates to the multi-stage circulating device air-floating apparatus that a kind of emulsifying greasy dirt water is handled.
Background technology
Ultra-thick oil waste water contains the greasy filth height, and MO proportion and water are approaching, and its former oil particles is suspended in the water for a long time; Contain a large amount of synthetic class organic high molecular compounds and natural macromolecular amount pitch, colloid material in the waste water, disperse phase and external phase are difficult for layering under action of gravity, and this waste water ph is 7.79; Be weakly alkaline; Waste water is brown, thickness, is the milk sap stable existence, is difficult to degraded.
The ultra viscous crude course of processing can produce the waste water that contains the heavy oil in water emulsion in a large number; Comprise Bottom Plate of Crude Oil Storage dehydration, desalination decalcification sewage, the coking water of condensation etc. that steams out greatly; This water is compared with common refinery water, oil field waste, and its outstanding feature is: 1. oil in water emulsion content is high: generally speaking, oil over half in the ultra viscous crude processing waste water exists with the oil in water emulsion form; After removing oil slick and dispersed oil, the COD more than 80% is owing to oil in water emulsion and colloidal suspension deposits yields; 2. emulsification degree is serious; Emulsion droplet is stable: the emulsion droplet diameter of ultra thick oil and emulsified oil has only the hundreds of nanometer usually to several microns; Owing to exist a large amount of interfacial activity materials of introducing in the oil recovery process and a large amount of colloids, bitum suspended substance in the waste water, make emulsion droplet highly stable; 3. oil in water emulsion viscosity is big: the kinematic viscosity that ultra viscous crude is 100 ℃ can reach 100mm
2More than/the s, HV makes the emulsion droplet interface stable unusually, and mobile variation causes emulsion droplet to be difficult for coalescence and absorption; 4. oil in water emulsion density is big: the density and the water of ultra viscous crude are approaching, and is therefore very low through sedimentation method separation profit efficient, even oil in water emulsion and water sepn effect after the flocculation are still relatively poor.
Because ultra emulsified viscous oil oil-contg is high, and is difficult to by biological degradation, therefore before getting into biochemical treatment, must adopt the physics and the method for chemistry to carry out pre-treatment earlier, and pretreated core link remove floating carburetion exactly.At present; Remove floating carburetting method and comprise absorption, extraction, flocculating settling, air supporting, membrane sepn etc.; Wherein flocculating settling and air-float method are more common, because ultra viscous crude density is high, viscosity is big, the oil in water emulsion after the flocculation is separated bad; The settlement separate time is long, efficient is low, thereby it is very undesirable to adopt above-mentioned single method to carry out heavy oil emulsive oil removal effect; If after flocculating settling separates, further adopt the not settlement separate oil in water emulsion of dissolved air flotation, there are process complicacy, the high defective of energy consumption again.Like the employing water quality and quantity adjusting-breaking milk and removing oil-eddy flow oily water separation-floatation purification technology of report in 2007 the 4th phases " oil Refining Technologies and engineering " " Liaohe River petrochemical industry extremely-viscous crude sewage pretreatment technology and engineering practice " such as Chen Chunmao to the pretreated method of extremely-viscous crude sewage.
Because the emulsification degree is high; Emulsion droplet is very little and stable unusually, and stable oil droplet is very little in the adsorptive capacity at bubble interface, therefore needs a large amount of bubble interfacial adsorption emulsion droplets; Need multistage air supporting to reach the separating effect that needs; Thereby cause dissolved air flotation energy consumption height and separation efficiency low, for example the disclosed a kind of heavy crude sewerage jet flow dissolved air flotation process of CN101327966 comprises that the stage trapping of an air supporting, injecting dissolve gas, secondary air supporting etc. is technological.
In recent years; Some new efficient air-floating separating device and technology are in the news; Like the disclosed cyclone floatation separating technology of US2008/0006588; The method and apparatus of CN 1546196 disclosed pressurized dissolved air flotation hydrocyclone oily water separations, it adopts air supporting de-oiling and rotational flow separation combination that the oily(waste)water feed liquid is carried out de-oiling, and above-mentioned document is all less than the separating effect of report to ultra thick oil and emulsified oil waste water.
US 5897772 discloses a kind of multi-stage circulating foam separating tower etc.The multi-stage circulating foam separating tower is a kind of air-flotation separation equipment of on the loop reactor basis, developing.Because depending on bubble and external phase to a great extent, the efficient of dissolved air flotation fully, contact fast, compares the interior quick turbulence of bubble of loop reactor with general airfloat equipment; Gas-to-liquid contact is abundant; Separated material is enriched on the foam surface faster, thereby can significantly improves the efficient of foam separation, this technology has higher separation efficiency for the oil in water emulsion of size more than 10 μ m; But BO emulsion droplet littler to particle diameter, the mobile difference in interface, separation efficiency is still lower.
CN1435275A discloses a kind of multi-stage circular flow reactor on traditional bubbling style reactor basis; Tower is built-in with guide shell; Guide shell bottom is provided with gas distributor, and this reactor drum can be widely used in the middle of all kinds of solution-airs such as oxidizing reaction, fermenting process, hydrocarbon processing reaction and active sludge sewage treatment process or the gas-liquid-solid chemical reaction process.
Existing multi-stage circular flow reactor is used for oily(waste)water air supporting test has following defective: oily water separation, contain a certain amount of water through bubbling in the foam, when handling waste water, approximately produced the more unmanageable waste water of original waste water about 10% like this; It is higher to the requirement of tensio-active agent simultaneously, should produce significant foam, is oily water separation again.
The utility model content
The purpose of the utility model is to provide a kind of heavy emulsifying greasy dirt water air supporting treatment unit, and it adopts breakdown of emulsion-circulation air supporting-frizing mode to handle the oil in water emulsion in the ultra-thick oil waste water.This device can reach more than 90% the flash liberation rate of heavy oil in water emulsion, and the waste water yield after the processing is brought up to more than 98% by about 90%, does not produce secondary sewage.
The described emulsifying greasy dirt water air supporting of the utility model treatment unit is a kind of circling and bubbling separation column, is made up of bottom bubbling segment 1 and top foam section 2; Bottom bubbling segment 1 is a gas lift type common loop reactor, and it comprises the gas distributor 4 of bottom, guide shell bottom bubbling segment 1, and the middle part is single-stage or multilevel deflector tube 5, and the bottom is a leakage fluid dram 3; The foam section 2 on top is overflow slot type gas-liquid separator, and it comprises overflow weir 13, oil wiper 11 and dregs of fat relief outlet 6, and oil wiper 11 is close to upper edge, overflow weir 13 top.
Connect pneumatics pump 7 in the bubbling segment bottom and blast air; Enter in the guide shell by gas distributor 4; Be connected waste water storage tank 10 and emulsion splitter solution storage tank 9 at the bubbling segment middle part with 8 by volume pump 12; And import waste water and emulsion splitter solution respectively, make oil in water emulsion in the waste water that contains emulsion splitter through the circulation air supporting mode of the guide shell foam section 1 that constantly condenses, floats to top through blasting air in certain amount.When oil reservoir appears in foam section, for preventing back-mixing, in time blow off through the oil slick of oil wiper 11 with the foam section enrichment, discharge by dregs of fat relief outlet 6, realize the separation of oil in water emulsion from waste water.
Advantage of the present invention and beneficial effect are:
Separation efficiency is high: the flash liberation rate of heavy oil in water emulsion can reach more than 90%;
Technological process is simple: waste water single pass circling and bubbling separation column, can realize removing of oil in water emulsion and suspended solid, and the sewage after the de-oiling can directly carry out biochemical treatment, and the treatment process of heavy crude processing waste water and process are simplified;
Yield is high after the wastewater treatment: the present invention is less demanding to tensio-active agent, owing to there is not too much foam to produce, the oil slick of generation is removed by Oil scraper, and the yield after the wastewater treatment is brought up to more than 98% by about 90%.Do not produce secondary sewage.
Description of drawings
Fig. 1 is the structure iron of circling and bubbling separation column.Wherein:
1-bubbling segment 2-foam section, 3-leakage fluid dram, 4-gas distributor, the guide shell of 5-loop reactor, 6-dregs of fat relief outlet, 11-oil wiper, 13-overflow weir
Fig. 2 is the continuous operation process schema of heavy oil in water emulsion in breakdown of emulsion-circulation foam separation waste water.Wherein: 7-pneumatics pump 8-volume pump, 9-emulsion splitter solution storage tank, 10-waste water storage tank, 11-oil wiper, 12-volume pump, 13-overflow weir
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is further described:
As shown in Figure 1, emulsifying greasy dirt water air supporting treatment unit is a kind of circling and bubbling separation column, is made up of bottom bubbling segment 1 and top foam section 2.
The foam section 2 on top is overflow slot type gas-liquid separator, and it comprises overflow groove weir 13, oil wiper 11 and dregs of fat relief outlet 6, and oil wiper 11 is close to upper edge, overflow weir top.
The bubbling segment of emulsifying greasy dirt water air supporting treatment unit is equivalent to a kind of multi-stage circular flow reactor, and therefore knockout tower of the present invention bottom bubbling segment becomes a kind of gas lift type common loop reactor, and the top foam section is the gas-liquid separator of overflow slot type.Guide shell 5 in the bubbling segment is multilevel deflector tube or single-stage guide shell, and the single-stage guide shell is a conventional design, and the multilevel deflector tube designs according to patent CN1435275.Emulsifying greasy dirt water air supporting treatment unit height overall is 3～12 with the ratio of bubbling segment bottom bubbling segment 1 internal diameter, and draft tube diameter is 0.3～0.9 with the ratio of bubbling segment internal diameter.The diameter ratio of the bubbling segment of emulsifying greasy dirt water air supporting treatment unit and foam section is 1: 1.4～1: 1.8, and aspect ratio is 1: 0.4～1: 0.8; The ratio of foam section and bubbling segment diameter is 1: 1～1.4: 1, and the aspect ratio of overflow groove weir and foam section is 0.1: 1～0.3: 1.
Described oil wiper adopts the commercially available Oil scraper of coupling, and oil wiper 11 is close to upper edge, overflow weir 13 top, is board-like or belt.Board-like Oil scraper, scraper plate length is 1: 1 with circling and bubbling separation column bubbling segment diameter ratio; The belt Oil scraper, bandwidth is 0.7: 1 with circling and bubbling separation column bubbling segment diameter ratio.
Claims (4)
1. emulsifying greasy dirt water air supporting treatment unit, it is characterized in that: emulsifying greasy dirt water air supporting treatment unit is a kind of circling and bubbling separation column, is made up of bottom bubbling segment (1) and top foam section (2); Bottom bubbling segment (1) is a gas lift type common loop reactor, and it comprises the gas distributor (4) of guide shell bottom, and the middle part is multilevel deflector tube (5), and the bottom is leakage fluid dram (3); The foam section on top (2) is an overflow slot type gas-liquid separator, and it comprises overflow weir (13), oil wiper (11) and dregs of fat relief outlet (6), and oil wiper (11) is installed in upper edge, overflow weir top.
2. emulsifying greasy dirt water air supporting treatment unit according to claim 1 is characterized in that: the diameter ratio of said circling and bubbling separation column bubbling segment and foam section is 1: 1.4～1: 1.8, and aspect ratio is 1: 0.4～1: 0.8; Foam section overflow groove weir and bubbling segment diameter ratio are 1: 1～1.4: 1, and the aspect ratio of overflow groove weir and foam section is 0.1: 1～0.3: 1.
3. emulsifying greasy dirt water air supporting treatment unit according to claim 1 is characterized in that: the guide shell in the described bubbling segment is single-stage or multilevel deflector tube; Described oil wiper is board-like or the belt Oil scraper.
4. emulsifying greasy dirt water air supporting treatment unit according to claim 3 is characterized in that: the scraper plate length of board-like Oil scraper is 1: 1 with circling and bubbling separation column overflow weir diameter ratio; The bandwidth of belt Oil scraper is 0.7: 1 with circling and bubbling separation column bubbling segment diameter ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202409221U CN202152289U (en) | 2011-07-08 | 2011-07-08 | Air-floatation processing device for emulsified oil sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202409221U CN202152289U (en) | 2011-07-08 | 2011-07-08 | Air-floatation processing device for emulsified oil sewage |
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| Publication Number | Publication Date |
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| CN202152289U true CN202152289U (en) | 2012-02-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011202409221U Expired - Lifetime CN202152289U (en) | 2011-07-08 | 2011-07-08 | Air-floatation processing device for emulsified oil sewage |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629958A (en) * | 2017-01-20 | 2017-05-10 | 南京工业大学 | Closed continuous high-pressure gas dissolving apparatus and method |
| CN107235532A (en) * | 2017-05-16 | 2017-10-10 | 方明环保科技(漳州)有限公司 | The separator of energy oil-water separation |
| CN112745904A (en) * | 2019-10-31 | 2021-05-04 | 中国石油化工股份有限公司 | Device and method for removing suspended matters and deeply dewatering oil |
| CN114477686A (en) * | 2020-11-11 | 2022-05-13 | 中石油克拉玛依石化有限责任公司 | Method and device for treating residual activated sludge |
-
2011
- 2011-07-08 CN CN2011202409221U patent/CN202152289U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106629958A (en) * | 2017-01-20 | 2017-05-10 | 南京工业大学 | Closed continuous high-pressure gas dissolving apparatus and method |
| CN106629958B (en) * | 2017-01-20 | 2023-02-14 | 南京工业大学 | Closed continuous high-pressure gas dissolving device and method |
| CN107235532A (en) * | 2017-05-16 | 2017-10-10 | 方明环保科技(漳州)有限公司 | The separator of energy oil-water separation |
| CN112745904A (en) * | 2019-10-31 | 2021-05-04 | 中国石油化工股份有限公司 | Device and method for removing suspended matters and deeply dewatering oil |
| CN112745904B (en) * | 2019-10-31 | 2022-04-08 | 中国石油化工股份有限公司 | Device and method for removing suspended matters and deeply dewatering oil |
| CN114477686A (en) * | 2020-11-11 | 2022-05-13 | 中石油克拉玛依石化有限责任公司 | Method and device for treating residual activated sludge |
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Granted publication date: 20120229 |
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| CX01 | Expiry of patent term |