CN102094616A - Method for separating flocculent organic matters from polymer-containing oil sludge - Google Patents
Method for separating flocculent organic matters from polymer-containing oil sludge Download PDFInfo
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- CN102094616A CN102094616A CN2010105863771A CN201010586377A CN102094616A CN 102094616 A CN102094616 A CN 102094616A CN 2010105863771 A CN2010105863771 A CN 2010105863771A CN 201010586377 A CN201010586377 A CN 201010586377A CN 102094616 A CN102094616 A CN 102094616A
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Abstract
The invention discloses a method for separating flocculent organic matters from polymer-containing oil sludge, which comprises the following steps of: adding water into the polymer-containing oil sludge, shearing and stirring, centrifuging, standing at the constant temperature, wherein the organic matters exist in a water phase to be separated; the mass ratio of the polymer-containing oil sludge to the water is 1:(1-4); in the step of shearing and stirring, the rotating speed is 3,500rpm, and time is 1 to 5 minutes; in the step of centrifuging, the rotating speed is 3,500rpm, and time is 5 to 20 minutes; and in the step of standing at the constant temperature, the temperature is between 50 and 80 DEG C, and time is 0.5 to 24 hours. A small number of pieces of equipment is selected, the method is simple and convenient, and easy to operate, a medicament is not added, impurities are prevented from being introduced, and the aftertreatment process cannot be influenced; crude oil can be separated and recovered by high-speed shearing and centrifuging; and organic flocculent precipitates, mud and sand are separated and can be researched and treated respectively, so that a cheaper and more high-efficiency oil sludge treatment method or medicament is found.
Description
Technical field
The invention belongs to the oil field environmental technology field, relate to a kind of separation and contain cotton-shaped organic method in the poly-greasy filth.
Background technology
Oily sludge is to be accompanied by oil field development to produce the accessory substance that occurs, owing to contain a large amount of crude oil and organic matter in the greasy filth, makes the intractability of such mud bigger.In early days, the greasy filth that produces of oil field, land is taked the form of stacking more.Cause the waste of crude resources on the one hand, the more important thing is that greasy filth can cause the huge pollution of surrounding environment when stacking, and comprises atmosphere, underground water and soil etc.In general, the mode of oily sludge processing has abstraction technique, solidification technology, incineration treatment technology, biologic treating technique, re-injection and profile control technique and other technology etc.The main purpose that oily sludge is handled is crude oil and the hazardous substances of removing wherein, and accomplishes twice laid as far as possible and reduce cost, and avoids secondary pollution, reaches the harmless treatment and the recycling of oily sludge.
Along with of the application of technology such as polyacrylamide polymer flooding in the oil field development field, can be accompanied by the output of polymer when improving oil recovery factor, cause the increase of greasy filth amount in the crude Treatment flow process indirectly.Be because polymer solution viscosity is bigger on the one hand, can carry out more silt particle from the stratum; On the other hand the chemical agent that adds in some organic component and the profit treatment system in high volence metal ion, the crude oil in polymer molecular chain and the stratum can further combined with, form a large amount of organic flocculent deposits.And the existence of organic flocculent deposit can cause the mud oil content to increase, and the difficulty of aggravation greasy filth processing.At present, greasy filth is particularly contained the processing many physical property and the states according to each component in the greasy filth of poly-greasy filth, utilize the method for machinery to separate and handle (a kind of oil-containing silt treatment method, number of patent application 200710301060.5; A kind of hot chemical treatment method for oil sludge that lands, number of patent application 200710011242.0).And the greasy filth component is extremely complicated, and wherein the existence of some a small amount of organic component but is to cause one of big key factor of greasy filth intractability, also lacks now the further Study on thinning of respective components.If can obtain the method that a kind of separation contains organic floccule in the poly-greasy filth, and then study and handle, then can make the greasy filth treatment measures more effective at its physicochemical properties.
Summary of the invention
The purpose of this invention is to provide a kind of separation and contain cotton-shaped organic method in the poly-greasy filth.
Separation provided by the invention contains cotton-shaped organic method in the poly-greasy filth, comprise the steps: added entry described containing in the poly-greasy filth, shear agitation and centrifugal after, after constant temperature is placed, the described cotton-shaped organic matter that contains in the poly-greasy filth is present in aqueous phase, finishes described separation and contains cotton-shaped organic method in the poly-greasy filth.
In this method, the described mass ratio that contains poly-greasy filth and water is 1: 1-4 specifically can be 1: 1-2,1: 1-3,1: 2-3,1: 2-4 or 1: 3-4, preferred 1: 3.In the described shear agitation step, rotating speed is 1000～4000rpm, preferred 3500rpm,, the time is 1-5 minute, specifically can be 1-3 minute or 3-5 minute, preferred 3 minutes, this step can be carried out shear agitation with various agitators commonly used, as can be U.S. Waring Blender agitator.In the described centrifugation step, rotating speed is 1000～4000rpm, preferred 3500rpm, and the time is 5-20 minute, is specially preferred 10 minutes 5-10 minute or 10-20 minute; Through after the above-mentioned centrifugation step, contain system that poly-greasy filth and water forms be divided into (oil reservoir), in (water layer) and time (dirty sand) three layers; Described constant temperature is placed in the step, and temperature is 50-80 ℃, and preferred 60 ℃, the time is 0.5～24 hour, preferred 6 hours.Various water all are applicable to this method, as the mineralized water of second use in pure water or the oil field etc.
Method provided by the invention has following advantage: (1) selects for use equipment few, and method is easy, and is simple to operate, is convenient to implement; (2) do not add any medicament, avoided the impurity introducing, can not influence last handling process; (3) utilize high speed shear can realize separating and recovery of crude oil with centrifugal; (4) separation obtains organic flocculent deposit and silt particle, can study respectively and handle, thereby find cheap more treatment technology of greasy filth efficiently or medicament.
Description of drawings
Fig. 1 is poly-greasy filth processing back photo for embodiment 1 contains.
The infrared spectrogram of system after Fig. 2 finishes for embodiment 1 separates, wherein, the organic flco in 1-intermediate layer; 2-is untreated and contains poly-greasy filth; The 3-partially hydrolyzed polyacrylamide (PHPA); 4-handles back lower floor mud.
Fig. 3 is poly-greasy filth processing back photo for embodiment 2 contains.
Fig. 4 is poly-greasy filth processing back photo for embodiment 3 contains.
Fig. 5 is poly-greasy filth processing back photo for embodiment 4 contains.
Fig. 6 is poly-greasy filth processing back photo for reference examples contains.
The specific embodiment
The invention will be further described below in conjunction with specific embodiment, but the present invention is not limited to following examples.Experimental technique among the following embodiment if no special instructions, is conventional method.Used material, reagent etc. if no special instructions, all can obtain from commercial channels among the following embodiment.Among the present invention, contain poly-greasy filth and refer to the mixture that media such as crude oil and earth and polymer are formed, refer in particular to the crude oil of sneaking into earth and annotating the organic components such as polymer of poly-output.
Shearing experiment among the following embodiment 1-5 of the present invention adopts U.S. Waring Blender agitator 1 grade (3500rpm) to carry out.
Usedly among the following embodiment 1-5 of the present invention contain poly-greasy filth and be the poly-greasy filth that contains of Bohai Sea district oil field output (by the quality percentage composition is that 50% water, crude oil and other solid constituent (silt particle, polyacrylamide, profit are handled medicament, corrosive pipeline dirt and bacterium etc.) that the quality percentage composition is 10-30% are formed; Used mineralized water is the mineralized water in corresponding oil field, and salinity is 3159mg/L, wherein, and K
+And Na
+Concentration be 1079mg/L, Ca
2+Concentration be 7mg/L, Mg
2+Concentration be 13mg/L, CO
3 2-Concentration be 128mg/L, HCO
3 -Concentration be 858mg/L, SO
4 2-Concentration be 30mg/L, Cl
-Concentration be 1044mg/L.
With mass ratio is that gather greasy filth 40g 1: 1 contain and mineralized water 40g shears 1min with 1 grade in Waring Blender agitator (rotating speed is 3500rpm), 3500rpm centrifugal (the centrifugation factor is 1960) 5min subsequently, range estimation is calculated as can be known, and the volume ratio of oil reservoir, water layer and dirty sand is 1: 5.5: 3, after putting into 60 ℃ of insulating box constant temperature placement 6h, there is cotton-shaped organic aggregate in aqueous phase, finishes to contain cotton-shaped organic separation in the poly-greasy filth.
With mass ratio is that gather greasy filth 40g 1: 2 contain and mineralized water 80g shears 3min with 1 grade in Waring Blender agitator (rotating speed is 3500rpm), 3500rpm centrifugal (the centrifugation factor is 1960) 10min subsequently, range estimation is calculated as can be known, and the volume ratio of oil reservoir, water layer and dirty sand is 0.5: 6: 3, after putting into 60 ℃ of insulating box constant temperature placement 6h, there is cotton-shaped organic aggregate in aqueous phase, finishes to contain cotton-shaped organic separation in the poly-greasy filth.
With mass ratio is that gather greasy filth 40g 1: 3 contain and mineralized water 120g shears 5min with 1 grade in Waring Blender agitator (rotating speed is 3500rpm), 3500rpm centrifugal (the centrifugation factor is 1960) 10min subsequently, range estimation is calculated as can be known, and the volume ratio of oil reservoir, water layer and dirty sand is 0.5: 7.5: 3, after putting into 60 ℃ of insulating box constant temperature placement 6h, there is cotton-shaped organic aggregate in aqueous phase, finishes to contain cotton-shaped organic separation in the poly-greasy filth.
With mass ratio is that gather greasy filth 40g 1: 4 contain and mineralized water 160g shears 3min with 1 grade in Waring Blender agitator (rotating speed is 3500rpm), 3500rpm centrifugal (the centrifugation factor is 1960) 20min subsequently, range estimation is calculated as can be known, and the volume ratio of oil reservoir, water layer and dirty sand is 0.5: 7: 2.5, after putting into 60 ℃ of insulating box constant temperature placement 6h, there is cotton-shaped organic aggregate in aqueous phase, finishes to contain cotton-shaped organic separation in the poly-greasy filth.
Reference examples
With mass ratio is that gather greasy filth 40g 1: 3 contain and mineralized water 120g shears 5min with 1 grade in Waring Blender agitator (rotating speed is 3500rpm), 3500rpm centrifugal (the centrifugation factor is 1960) 10min subsequently, range estimation is calculated as can be known, and the volume ratio of oil reservoir, water layer and dirty sand is 0.5: 7.5: 3, after room temperature is placed 24h, water does not have cotton-shaped organic aggregate, can not realize containing cotton-shaped organic separation in the poly-greasy filth.
Fig. 1, Fig. 3-6 gathers the photo in kind after greasy filth is handled for embodiment 1-5 contains, organic flco is cotton-shaped organic matter among Fig. 1.As seen from the figure, after the inventive method processing, contain poly-greasy filth and be divided into upper, middle and lower-ranking, the upper strata is an oil phase, and the middle level is a water, wherein has cotton-shaped organic matter, lower floor is a dirty sand, wherein contain a large amount of silt particles and low amounts of water, has realized separating of crude oil, cotton-shaped organic matter and silt particle.
The infrared spectrogram of system after Fig. 2 finishes for embodiment 1 separates, wherein, the organic matter that 1-is cotton-shaped; 2-is unsegregated to contain poly-greasy filth; 3-partially hydrolyzed polyacrylamide (PHPA) (contrast is used); 4-separates the silt particle that the back produces.As seen from the figure, 3450 and 1640cm
-1Corresponding to amide group, illustrate and only contain micro-partially hydrolyzed polyacrylamide (PHPA) in the cotton-shaped organic matter; 1112cm
-1Corresponding to diether linkage structure, show the residual components that may contain a large amount of polyether type demulsifying agents in the cotton-shaped organic matter.Embodiment 2-4 gained result similarly no longer endures herein and states.
Claims (9)
1. a separation contains cotton-shaped organic method in the poly-greasy filth, comprise the steps: added entry described containing in the poly-greasy filth, shear agitation and centrifugal after, constant temperature is placed, the described cotton-shaped organic matter that contains in the poly-greasy filth is present in aqueous phase, finishes described separation and contains cotton-shaped organic method in the poly-greasy filth.
2. method according to claim 1 is characterized in that: the described mass ratio that contains poly-greasy filth and water is 1: 1-4.
3. method according to claim 2 is characterized in that: the described mass ratio that contains poly-greasy filth and water is 1: 3.
4. according to the arbitrary described method of claim 1-3, it is characterized in that: in the described shear agitation step, rotating speed is 1000～4000rpm, and the time is 1-5 minute.
5. method according to claim 4 is characterized in that: in the described shear agitation step, rotating speed is 3500rpm, and the time is 3 minutes.
6. according to the arbitrary described method of claim 1-5, it is characterized in that: in the described centrifugation step, rotating speed is 1000～4000rpm, and the time is 5-20 minute.
7. method according to claim 6 is characterized in that: in the described centrifugation step, rotating speed is 3500rpm, and the time is 10 minutes.
8. according to the arbitrary described method of claim 1-7, it is characterized in that: described constant temperature is placed in the step, and temperature is 50-80 ℃, and the time is 0.5～24 hour.
9. method according to claim 8 is characterized in that: described constant temperature is placed in the step, and temperature is 60 ℃, and the time is 6 hours.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103833105A (en) * | 2014-02-24 | 2014-06-04 | 中国海洋石油总公司 | Method for treating oil-accumulated sludge and recycling crude oil |
| CN105198187A (en) * | 2015-10-08 | 2015-12-30 | 中国海洋石油总公司 | Polymer-containing sludge dispersion and treatment method |
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