A kind of super Heavy Oil High Temperature sewage disposal reverse-phase emulsifier
Technical field
The present invention relates to the technical field of petroleum chemistry treatment agent, the reverse-phase emulsifier that provides is particularly useful for the processing of super Heavy Oil High Temperature sewage.
Background technology
The key character that super viscous crude is different from other class petroleum resources is that its bituminous matter, gum level are very high, cause that its viscosity is high, density is large, super heavy oil recovery adopts the steam thermal recovery more, high-temperature produced liquid have a following characteristic: (1) super viscous crude density is high, because resin and asphalt content is high, cause the density variation of crude oil and water little, the mean density of viscous crude is 900kg/m
3, the density of special super viscous crude is at 990kg/m
3Above; (2) super viscous crude Produced Liquid has more impurity, and oil-contg and solid suspension content be up to more than 10000mg/L, and contains the Multiple components such as petroleum-type, suspended solid, dispersed oil and oil slick, oil in water emulsion and chemical agent; (3) have natural emulsified character due to colloid and pitch, the oil droplet cohesion is added to the difficulties, and adds to the difficulties for the breakdown of emulsion of super viscous crude Produced Liquid, and emulsification is serious; (4) have larger viscosity, particularly more remarkable when water temperature is low; (5) water temperature is high, often temperature will be brought up to more than 90 ℃ in order to reduce viscosity of crude on stream; (6) contain a large amount of positively charged ion (Na in super viscous crude Produced Liquid
+, Ca
2+Deng) and negatively charged ion (Cl
-, SO
4 2-Deng), they can affect surge capability, saltiness and the fouling tendency of viscous crude Produced Liquid; In addition, during sedimentation, the chemical agents such as the emulsion splitter that uses can remain in sewage super viscous crude Produced Liquid in a large number in dehydration, and the emulsion's stability that makes sewage form is extremely strong, are one of the most unmanageable oil extraction waste waters.
Patent for reverse-phase emulsifier discloses: the U.S. has announced a kind of quaternary ammonium salt reverse-phase emulsifier (US387017); The U.S. has announced a kind of allylic reverse-phase emulsifier (US4614593); European publication a kind of amine macromolecular compound emulsion splitter (EP0331323A2) that is applicable to crude oil development; China has announced a kind of reverse-phase emulsifier and preparation method thereof (CN102559246A), namely gets described reverse-phase emulsifier for cationic polyamide-amine, Hydrin quaternary ammonium salt, polyacrylamide oxy-ethyl-trimethyl salmiac and water mix.China has announced a kind of preparation method (CN101357992) of stellate poly quaternary ammonium salt high efficient reverse-phase emulsifier, first make linear polyquaternium with the organic amine such as secondary amine, tertiary amine and epoxy chloropropane ring-opening polymerization, take polyamide-amide as linking agent, finally make the stellate poly quaternary ammonium salt reverse-phase emulsifier again.China has also announced a kind of highly efficient anti-phase emulsion breaker for thick oil pollution water processing (CN1966138), with propylene glycol as initiator, under the effect of catalyzer, carry out propoxylation reaction, then carry out addition polymerization with oxyethane, with nonyl phenol as initiator, under the effect of catalyzer, generate nonyl phenol ethoxylate with reacting ethylene oxide, then carry out addition polymerization with propylene oxide, generate alkylphenol polyoxyethylene; Mixture and the vinylformic acid of propylene glycol polyethers and alkylphenol polyoxyethylene are carried out esterification under acidic conditions, carry out radical polymerization under the effect of initiator, generate carboxylate; Carry out esterification with toxilic acid more partially end-blocked, generate acrylic acid modified high molecular weight demulsifier.
The reverse-phase emulsifier kind is more at present, has stronger specific aim, mainly contain mineral-type macromolecular compound and organic cationic polymers, but when being applied to the rp demulsification of super viscous crude Produced Liquid, effect is undesirable, complexity day by day along with super Heavy Oil High Temperature sewage quality, high temperature sewage changes O/W type or W/O/W type into by the w/o type of initial stage of development, oil-water emulsion stability is extremely strong, therefore traditional reverse-phase emulsifier has been difficult to meet the demands, and the exploitation of the super Heavy Oil High Temperature Produced Liquid reverse-phase emulsifier of high temperature resistant, excellent performance seems particularly urgent.
The present invention carries out copolymerization with polyamide-amide and polyethers and non-ionic polyalcohol and obtains new modified reverse-phase emulsifier, belong to water miscible polymkeric substance, water external emulsion to super Heavy Oil High Temperature sewage has excellent demulsification, with performances such as electrical neutralization, absorption, bridge formations, add 10-30ppm and can effectively remove the pollutents such as oil in high oily(waste)water, suspended substance.
Summary of the invention
The object of the invention is to: the super Heavy Oil High Temperature sewage disposal high efficient reverse-phase emulsifier that provides, can efficiently process super Heavy Oil High Temperature sewage, have oily water separation speed fast, the beneficial effect of the universality of raising product and the economic benefit of product.
The object of the present invention is achieved like this: a kind of super Heavy Oil High Temperature sewage disposal reverse-phase emulsifier, the modified composite reverse-phase emulsifier that obtains is take cation polyether and nonionic polyoxyalkylene as raw material, take 3.0G dendroid polyamide-amide as linking agent, and implementation step is as follows:
Wherein cation polyether is synthetic:
The glycerol that adds 0.020-0.030mol in the four-hole boiling flask that agitator, prolong, thermometer are housed, then add the 2.10-2.17g boron trifluoride diethyl etherate, under agitation temperature control 45-55 ℃, slowly drip again epoxy chloropropane 38-42g, time for adding 4-6min dropwises, and is warming up to 75 ℃, reaction 5-7h gets the thick terminal hydroxy group chloro polyethers of brown; With 90-110g terminal hydroxy group chloro polyethers and 182-202g trimethylamine aqueous solution, be placed in clean reactor, pass into the nitrogen excluding air, temperature control 70-80 ℃, reaction 4-6h continues to be warming up to 120-130 ℃, reaction 6-8h gets the water miscible cation polyether of brown; Wherein the ratio of quality and the number of copies of epoxy chloropropane, glycerol, Trimethylamine 99 is 40-60:1:40-60, and the consumption of initiator boron trifluoride diethyl etherate liquid is 1% of epoxy chloropropane;
Wherein 3.0G PAMAM's is synthetic:
1) the 0.5G polyamide-amide is synthetic: under the protection of nitrogen, add quadrol 30.6g, methyl alcohol 96.2g in the four-hole boiling flask that stirring rod, thermometer, prolong are housed, after being cooled to 0 ℃ with ice-water bath, slowly drip methyl acrylate 174.0g, stir lower temperature control 22-27 ℃, continue reaction 22-26h, the weak yellow liquid that obtains, carry out underpressure distillation under 45 ℃ of conditions, obtain flaxen 0.5G polyamide-amide product;
2) the 1.0G polyamide-amide is synthetic: with methyl alcohol 120g dissolving 1.0G polyamide-amide 270g, join in four-hole boiling flask, after ice-water bath is cooled to 0 ℃, slowly drip quadrol, stir lower temperature control 23-28 ℃, time for adding 1-1.5h, dropwise and continue reaction 24h, the weak yellow liquid that obtains carries out underpressure distillation under 70 ℃ of conditions, obtain faint yellow 1.0G polyamide-amide product;
3) reverse-phase emulsifier: proceed the Michael addition reaction with above-mentioned 1.0G polyamide-amide, namely get the 1.5G polyamide-amide, then carry out amidate action, namely get the 2.0G polyamide-amide, carry out successively Michael addition reaction and amidate action, namely obtain the polyamide-amide of corresponding algebraically;
Wherein nonionic polyoxyalkylene is synthetic:
Add 90-110g potassium hydroxide powder and 900-1100ml methylene dichloride in there-necked flask, mix and blend under room temperature, then drip 600-polyoxyethylene glycol 230-270g, the potassium hydroxide powder that adds respectively 4-6g when 1.0h, 2.0h, 3.0h, wherein add the 20g polypropylene glycol in the centre that adds the potassium hydroxide powder, continue to obtain crude product after reaction 20h, after methylene dichloride is evaporated completely, toluene 400-500ml dissolving with heating, get the potassium hydroxide precipitation after standing, toluene 400-500ml with heating dissolves once again, obtains the polyoxyethylene propylene oxide;
Wherein the modified composite reverse-phase emulsifier is synthetic: be in the aqueous solution of 800-1200g in gross weight, add successively the dendroid polyamide-amide 150-400g in cation polyether 100-250g, 3.0 generations, nonionic polyoxyalkylene 50-100g; Stir 2-3h under 35-45 ℃, get the modified composite reverse-phase emulsifier, be super Heavy Oil High Temperature sewage disposal reverse-phase emulsifier.
Described reverse-phase emulsifier adopts the super Heavy Oil High Temperature sewage of this product treatment, and its oleaginousness drops to below 10mg/L from 6250mg/L.
Effect of the present invention and mechanism: the synthesis mechanism of multichain section cation polyether-glycerol chloro polyethers: as initiator, boron trifluoride diethyl etherate liquid is initiator with glycerol, causes epoxy chloropropane and carries out the positively charged ion ring-opening polymerization, generates terminal hydroxy group chloro polyethers; Active chlorine atom in terminal hydroxy group chloro polyethers and Trimethylamine 99 carry out the alkylated reaction of amine, generate the polycation polyethers with positive charge.The synthesis mechanism of polyamide-amide: hocket Michael addition and amidate action can obtain for 1.5 generations, 2.0 generations, 2.5 generations, 3.0 generation PAMAM.
The method of the reverse-phase emulsifier of the present invention preparation comprises the synthetic of cation polyether, 3.0 PAMAMs synthetic, nonionic polyoxyalkylene synthetic, polyamide-amide-polyether-type--modified composite reverse-phase emulsifier synthetic, its technological line is simple, reaction conditions is gentle, dewatering speed is fast, and breakdown of emulsion efficient is high, produces practical function splendid, the product innovation that provides, reduce production cost, also made demonstration for enterprise energy-saving and cost-reducing, shown technical progress.
Embodiment
The present invention is described further in conjunction with the embodiments.
Embodiment
1) cation polyether is synthetic:
Be equipped with agitator, prolong, thermometer four-hole boiling flask in add the glycerol of 0.025mol as initiator, then add 2.13g (being about 1%) boron trifluoride diethyl etherate liquid, temperature control is 50 ℃ under agitation condition, slowly drip epoxy chloropropane, time for adding 5min, be warming up to 75 ℃ of reaction 6h after complete, obtain the thick terminal hydroxy group chloro polyethers of brown; 100g terminal hydroxy group chloro polyethers and 191.3g trimethylamine aqueous solution (amino and chlorine atom equivalent) are placed in clean reactor, pass into the nitrogen excluding air, 75 ℃ of temperature controls, reaction 5h, continue to be warmed up to 125 ℃, reaction 7h obtains the water miscible cation polyether of brown; Wherein the ratio of quality and the number of copies of epoxy chloropropane, glycerol, Trimethylamine 99 is 40:1:40 or 60:1:60, epoxy chloropropane and Trimethylamine 99 equivalent, and take boron trifluoride diethyl etherate liquid as initiator, its consumption is 1% of epoxy chloropropane.
2) 3.0GPAMAM's is synthetic
(1) the 0.5G polyamide-amide is synthetic: under the protection of nitrogen; add quadrol 30.6g, methyl alcohol 96.2g in the four-hole boiling flask with stirring rod, thermometer, prolong; be cooled to 0 ℃ with ice-water bath; slowly drip methyl acrylate; stir 25 ℃ of lower temperature controls, the complete continuation reaction of time for adding 1h 24h, the weak yellow liquid that obtains; carry out underpressure distillation under 45 ℃ of conditions, namely obtain the light yellow product of 0.5G polyamide-amide.
(2) the 1.0G polyamide-amide is synthetic: the 1.0G polyamide-amide of separating with dissolve with methanol, join in four-hole boiling flask, ice-water bath is cooled to 0 ℃, slowly drip quadrol, stir 25 ℃ of lower temperature controls, time for adding 1-1.5h continues reaction 24h, the weak yellow liquid that obtains, carry out underpressure distillation under 70 ℃ of conditions, namely obtain the light yellow product of 1.0G polyamide-amide.
Reverse-phase emulsifier (3) is proceeded the Michael addition reaction with 1.0G polyamide-amide obtained above, namely can obtain the 1.5G polyamide-amide, then carry out amidate action, namely obtain the 2.0G polyamide-amide, carry out successively Michael addition reaction and amidate action, namely obtain the polyamide-amide of corresponding algebraically.
3) nonionic polyoxyalkylene is synthetic
Add 100g potassium hydroxide powder and 1000ml methylene dichloride in there-necked flask, mix and blend under room temperature, then drip 250g polyoxyethylene glycol-600, the potassium hydroxide powder that adds respectively 5g when being 1.0h, 2.0h, 3.0h, and drip the 20g polypropylene glycol when 2.0h, continue to obtain crude product after reaction 20h, after methylene dichloride is evaporated completely, toluene 400-500ml dissolving with heat, the standing unreacted potassium hydroxide precipitation of removing, the toluene 400-500ml dissolution precipitation of reusable heat once obtains the product of polyoxyethylene propylene oxide.
4) the modified composite reverse-phase emulsifier is synthetic
Cation polyether is mixed with nonionic polyoxyalkylene, 3.0G polyamide-amide is linking agent, be in the aqueous solution of 1000g in gross weight, cation polyether be 100 or 250g, the dendroid polyamide-amide in 3.0 generations be 150 or 400g, nonionic polyoxyalkylene is 50 or 100g; Stir 2h under 40 ℃, obtain final product modified composite reverse-phase emulsifier, be i.e. super Heavy Oil High Temperature sewage disposal reverse-phase emulsifier.
Reverse-phase emulsifier of the present invention is the synthesis type medicament, and at 85 ℃, pH:7.0 or 8.0, dosage are under the condition of 30mg/L, the oleaginousness that surpasses Heavy Oil High Temperature sewage can be dropped to below 10mg/L from 6249.3mg/L, and evaluation result sees the following form:
Reverse-phase emulsifier of the present invention possesses very strong close electric charge ability, is enough to the negative charge that the balance emulsifying agent forms; Very strong surfactivity is arranged, can destroy the interfacial energy of milk sap, oil removal rate is greater than 98%; This reverse-phase emulsifier is not stratified, without caking, machinery-free impurity, good water solubility, have oily water separation speed soon, low characteristics of oleaginousness in water.
The present invention obtains the modified composite reverse-phase emulsifier, and namely super Heavy Oil High Temperature sewage disposal reverse-phase emulsifier product meets company standard.
The manufacturer of the glycerol that the present invention selects is Shanghai auspicious Chemicals of the present company limited; Boron trifluoride diethyl etherate manufacturer is Chemical Reagent Co., Ltd., Sinopharm Group; Epoxy chloropropane manufacturer is Qilu Petrochemical Company; Terminal hydroxy group chloro polyethers is self-control; Trimethylamine 99 manufacturer is the poly-Feng Huagong of Changzhou company limited; Potassium hydroxide powder production producer is the Jinan vast and boundless chemical industry of gold company limited; The manufacturer of polypropylene glycol is Jiangsu Hai'an Petrochemical Plant.