CN104556624A - Oil sludge demulsifier and oil sludge advanced treatment process - Google Patents

Oil sludge demulsifier and oil sludge advanced treatment process Download PDF

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Publication number
CN104556624A
CN104556624A CN201310495675.3A CN201310495675A CN104556624A CN 104556624 A CN104556624 A CN 104556624A CN 201310495675 A CN201310495675 A CN 201310495675A CN 104556624 A CN104556624 A CN 104556624A
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sludge
oil
greasy filth
tank
emulsion splitter
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CN201310495675.3A
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CN104556624B (en
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杨飞飞
回军
李宝忠
吴巍
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China Petroleum and Chemical Corp
Sinopec Fushun Research Institute of Petroleum and Petrochemicals
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China Petroleum and Chemical Corp
Sinopec Fushun Research Institute of Petroleum and Petrochemicals
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G1/00—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/06—Sludge reduction, e.g. by lysis
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
    • C10G2300/10—Feedstock materials
    • C10G2300/1003—Waste materials

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Water Supply & Treatment (AREA)
  • Environmental & Geological Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
  • Separation Of Suspended Particles By Flocculating Agents (AREA)

Abstract

The invention discloses an oil sludge demulsifier and an oil sludge advanced treatment process. The oil sludge demulsifier comprises the following components in parts by weight: 7-28 parts of polyglycerol fatty acid ester, 3-14 parts of oleic acid polyoxyethylene ester, 0.5-2 parts of a green accessory ingredient and 58-92 parts of water. The oil sludge advanced treatment process comprises the following steps: enabling oily sludge to enter a sludge mixing tank for demulsification treatment and then carrying out solid-liquid separation; enabling filter liquor to enter a two-phase swirler for separation; enabling lower-layer residual sludge to reflux to a sludge tank; enabling an upper-layer mixed liquor to enter a gas-liquid mixing tank to be mixed with air and to enter a separation tank for oil-water separation; recycling sump oil to a sump oil tank; performing following-up treatment on sewage. The oil sludge advanced treatment process can reduce the moisture content of oily sludge, recycles most crude oil in oil sludge, and reduces the difficulty of sludge follow-up treatment; the oil sludge advanced treatment process is wide in application rang, and is particularly applicable to treatment of tank-bottom oil sludge, scum and activated sludge, and treatment of various kinds of oily sludge generated by oil exploitation and storage and transportation companies.

Description

A kind of greasy filth emulsion splitter and greasy filth advanced treatment process
Technical field
The present invention relates to a kind of greasy filth emulsion splitter and preparation method thereof, particularly relate to a kind of environment-friendly type greasy filth emulsion splitter containing polyglycerol fatty acid ester and preparation method thereof; The present invention relates to a kind of greasy filth advanced treatment process simultaneously.
Background technology
Oil exploitation, collect defeated, black solid, the semisolid waste of a large amount of oil-containing can be produced in refining and oily water treatment process, be referred to as greasy filth (abbreviation greasy filth), its main component is oil, Ni Heshui.In greasy filth, solid particle size can from not enough micron to several inches, and great majority are between l to 100 micron, and crude oil kind, refinery structure and operational condition are depended in oil composition, and the composition of mud may change in time and change.According to statistics, nearly 3,000,000 tons of Chinese festiva produce oil mud, the crude resources wherein contained is about about 600,000 tons.Except containing except a large amount of aged crude oil, wax, colloidalmaterial in greasy filth, containing hazardous and noxious substances such as a large amount of benzene homologues, phenols, anthracene, pyrene, polychlorobiphenyl and Dioxins.In addition also contain a large amount of pathogenic bacterias, parasite in greasy filth, if do not carried out rationally effective process, not only can waste petroleum resources, also can cause severe contamination to environment.
The technology of current process greasy filth mainly contains resource reclaim, harmless treatment and comprehensive utilization technique etc.Resource reclaim treatment technology comprises solvent extration, WATER-WASHING METHOD, micro emulsion washing, breakdown of emulsion method etc.Greasy filth innoxious process for treating comprises immobilization process, the technology such as biological treatment, burning.Comprehensive utilization technique comprises thermolysis, brickmaking is paved the way and other purposes.The treatment technology of greasy filth is varied, and often kind of method has respective relative merits and the scope of application.
Have the advantages such as activity is high, instant effect due to chemical demulsifier, adding emulsion splitter is breaking method the most frequently used at present.The shortcomings such as it is low that emulsion splitter conventional at present mainly also exists oil recovery rate, biological degradability difference.CN101050380A discloses a kind of base oildeemulsifier in high performance and preparation method thereof, and the composition principle of this emulsion splitter take W-Gum as starting raw material, introduces after conventional polyether type emulsion splitter carries out graft copolymerization and obtains.This emulsion splitter has the features such as service temperature gentleness, cost is low, demulsification is good, but preparation process is comparatively complicated, also needs to add protonic acid and organic solvent, is unfavorable for environmental protection, and concrete demulsification also lacks the support of related data.CN101418230A discloses a kind of crude oil demulsifier and preparation method thereof, and this emulsion splitter is the polyether compound that polyamide-amide compound and epoxy compounds obtain through alkoxylation.This emulsion splitter has good interfacial activity and penetrating power, has good breakdown of emulsion ability to crude oil emulsion, but the preparation of this emulsion splitter is complicated, and cost is high, is unfavorable for practical application.CN102041038A discloses a kind of method for treating ageing oil of viscous oil, this invention provide firstly a kind of viscous crude ageing oil emulsion splitter obtained by the mixing of phenol, vinylbenzene, polyethylene polyamine, formaldehyde, oxyethane and propylene oxide, this emulsion splitter has good breakdown of emulsion function, the destruction for oil-water interfacial film can be realized, but biological degradability is poor, large to the subsequent affect of environment.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of greasy filth emulsion splitter and preparation method thereof.This emulsion splitter is good to greasy filth demulsification, and has that oil recovery rate is high, biological degradability good, production cost is low, preparation method is easy and the advantage such as applied range.The present invention provides a kind of greasy filth advanced treatment process simultaneously, and this technique not only can realize the oil of oily sludge, water, mud three phase separation and process effectively, the most of crude oil also in recyclable oily sludge, greatly reduces the difficulty of mud subsequent disposal.
Greasy filth emulsion splitter of the present invention, comprises with parts by weight: polyglycerol fatty acid ester 7 ~ 28 parts, polyoxyethylene oleic acid ester 3 ~ 14 parts, Green Additives 0.5 ~ 2 part, 58 ~ 92 parts, water.
The structural formula of described polyglycerol fatty acid ester (PGFE) is ROCH 2cHOR (CH 2oCH 2cHOR) ncH 2oR, wherein R=H or C 4~ C 18fatty acyl group, n=0 ~ 10.
The chemical structural formula of described polyoxyethylene oleic acid ester (OE-n) is (C 2h 4o) nc 18h 34o 2, wherein n=1 ~ 10.
Described Green Additives is one or more of Trisodium Citrate, sodium oleate, Sunmorl N 60S, sodium-chlor or Repone K.
Greasy filth emulsion splitter of the present invention can also add inhibiter as required, as one or more in type oxide film inhibiter, deposition membranous type inhibiter or adsorbed film type inhibiter, the add-on of inhibiter according to actual needs, generally accounts for 0.1% ~ 1% of greasy filth emulsion splitter weight.
The preparation method of greasy filth emulsion splitter of the present invention, comprises following content: polyglycerol fatty acid ester, polyoxyethylene oleic acid ester, Green Additives and water are mixed and obtain greasy filth emulsion splitter.Wherein mixing time is 20 ~ 70 minutes, and mixing temperature is 40 ~ 60 DEG C.
Greasy filth emulsion splitter of the present invention can be applied to the harmless treatment of tank bottom oil sludge, scum silica frost and active sludge, and also can be applied to the process of the various greasy filth of oil production and Transportation Enterprise generation, the greasy filth high to oil length is particularly applicable.
The greasy filth advanced treatment process of the greasy filth emulsion splitter described in use of the present invention, comprise following content: the oily sludge in storage sludge sump enters in mud tempering tank, add emulsion splitter, carry out breakdown of emulsion process, oily sludge after breakdown of emulsion enters folded spiral shell formula sludge dewatering equipment and carries out solid-liquid separation, obtain filtrate and mud cake, mud cake is transported by worm conveyor, landfill can be selected, extraction heat, pyrolysis, burn, the sludge dispoal such as compost or mummification device carries out subsequent disposal to it, filtrate enters two-phase swirler and is separated, after two-phase laminated flow by the lower floor's residual sludge reflux in swirler to storage sludge sump, upper strata mixed solution sends into gas-liquid mixed tank and air mixed, then separate tank is entered, sump oil is separated with Preliminary sewage, sump oil utilizes slag scraper to be recycled to slop oil tank, sewage enters strainer, suspended particle in sewage is separated with water with residue sump oil, by isolated for filter top oil recovery to oil skimming tank, the sewage that strainer is discharged is sent into sewage work and is carried out subsequent disposal.Emulsion splitter mixing time in mud tempering tank is 20 ~ 40 minutes, and tempering tank temperature controls at 50 ~ 70 DEG C.
Described folded spiral shell formula sludge dewatering equipment is made up of sludge condensation and sludge dewatering two portions.Under gravity, water leaches from the lamination gap of relative movement, realizes rapid concentration.Through concentrated mud along with the rotation of screw shaft in water extracter is constantly moved forward, under the effect of the pressure, the moisture in mud is squeezed discharge, and mud cake solid content constantly raises, and finally realizes the continuously dehydrating of mud.
Described separate tank is provided with flap shape slag-guiding plate device; Flap shape slag-guiding plate is made up of anterior swash plate, front straight plate, middle part swash plate, the straight plate in rear portion and rear portion swash plate, wherein the straight plate in middle part and the straight plate level in rear portion are placed, anterior swash plate is lower than front straight plate, middle part swash plate is lower than front straight plate, the straight plate in rear portion is lower than middle part swash plate, and rear portion swash plate is higher than the straight plate in rear portion; After dreg scraper contacts with anterior swash plate, entering sump oil on front straight plate all along with after dreg scraper moves through middle part swash plate and the straight plate in rear portion, can overflow from rear portion swash plate, enters in withdrawing can.
In present invention process, described gas-liquid mixed tank belongs to tightness system, is provided with vapor pipe bottom cover plate, can discharge the obnoxious flavour discharged in gas-liquid mixing process, preventing pollution Working environment.
Technological process of the present invention is carried out under automatic control device controls.
Technological process of the present invention is carried out all at normal temperatures and pressures except mud tempering tank.
Polyglycerol fatty acid ester (PGFE) in greasy filth emulsion splitter of the present invention is a kind of novel, efficient nonionic surfactant.It is formed by natural glycerin and lipid acid at high temperature esterification, in metabolic process, can be analyzed to sweet oil & fat, thus is absorbed by the body or excretes, and has the security of height.Its maximum feature is quite stable in alkalescence, neutrality, sour environment, has better resistance to elevated temperatures compared with similar products; Have good synergy with other tensio-active agents, have wider HLB value (hydrophile-lipophile balance value), breakdown of emulsion ability is strong, consumption is few, is a kind of edible surface promoting agent of excellent property.Polyoxyethylene oleic acid ester (OE-n) is a kind of nonionogenic tenside, and have good demulsification performance, biological degradability is high, is widely used in petroleum industry and environment protection industry.PGFE and OE-n of the present invention has higher synergy, and composite use is specially adapted to the breakdown of emulsion reaction of greasy filth.
Emulsion splitter of the present invention compares with traditional emulsion splitter, has the following advantages:
(1) nonionic green surfactant polyglycerol fatty acid ester is adopted to be primary surfactant in emulsion splitter of the present invention, composite with nonionogenic tenside polyoxyethylene oleic acid ester, more auxiliary Green Additives, demulsification is good;
(2) emulsion splitter biological degradability of the present invention is good, little on the impact of environment, environmental protection;
(3) production cost of emulsion splitter of the present invention is low, and preparation method is easy, applied widely, is easy to industrial application;
(4) separate tank in present invention process is provided with flap shape slag-guiding plate device, this flap shape slag-guiding plate device, not only scrapes slag easily, thoroughly, and sump oil is not easily from reflux bottom dreg scraper, guarantees the water quality of water outlet, also improves the rate of recovery of sump oil;
(5) the folded spiral shell formula sludge dewatering equipment adopted in present invention process, dehydrating effect is good, and cost is low, easy to maintenance, and it has self-cleaning function, blockage problem can not occur, and only needs a small amount of water to rinse, without secondarily polluted water, meets environmental protection concept requirement;
(6) emulsion splitter of the present invention is combined with greasy filth demulsification technology of the present invention, not only the water ratio of greasy filth can be reduced to about 50% from 80% ~ 98%, can also reclaim the most of crude oil in greasy filth, greatly reduces the difficulty of mud subsequent disposal.
Accompanying drawing explanation
Fig. 1 is advanced treatment process of sludge containing oil schematic flow sheet of the present invention.
Wherein, 1-storage sludge sump, 2-sludge pump, 3-mud tempering tank, 4-dosing pump, 5-medicine dissolving and adding system, 6-folds spiral shell formula sludge dewatering equipment, 7-filtrate, 8-two-phase swirler, 9-mud cake, 10-sludge dispoal device, 11-gas-liquid mixed tank, 12-separate tank, 13-scum silica frost, 14-oil skimming tank, 15-sewage, 16-strainer, 17-sewage work, 18-excess sludge.
Fig. 2 is the structural representation of separate tank slag-guiding plate in oil-containing sludge recycling process of the present invention.
Wherein, the anterior swash plate of 1-, 2-front straight plate, swash plate in the middle part of 3-, the straight plate in 4-rear portion, 5-rear portion swash plate, 6-separate tank pond body.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated, but therefore do not limit the present invention.Wherein involved percentage composition take weight as benchmark.Technological process of the present invention is carried out all at normal temperatures and pressures except mud tempering tank.
The present invention is realized by following technological process: first pump in mud tempering tank 3 by the mud in storage sludge sump 1 by sludge pump 2, uniform stirring mud.Aqueous emulsion splitter is put in mud tempering tank 3 by dosing pump 4 and is carried out the process of mud breakdown of emulsion by medicine dissolving and adding system 5.Mud after breakdown of emulsion process enters folded spiral shell formula sludge dewatering equipment 6 by drainage.Water extracter 6 is provided with sludge condensation and sludge dewatering two portions device.Under gravity, water leaches from the lamination gap of relative movement, realizes rapid concentration.Through concentrated mud along with the rotation of screw shaft is constantly moved forward, under the effect of the pressure, the moisture in mud is squeezed discharge, and mud solid content constantly raises, and finally realizes the continuously dehydrating of mud.Moisture in mud forms filtrate 7 after being squeezed in water extracter and discharging, and mud forms mud cake 9 after continuously extruded dehydration.The mud cake 9 formed after processed is transported by worm conveyor, and the sludge dispoal devices 10 such as landfill, extraction heat, pyrolysis, burning, compost or mummification can be selected to carry out subsequent disposal to it.Be water, oil, residue mud and the impurity lighter than water from the main component of water extracter 6 filtrate 7 out, this mixed solution pumped in two-phase swirler 8 and carries out solid-liquid separation.Bottom excess sludge 18 after solid-liquid separation in swirler 8 returns storage sludge sump and processes, and gas-liquid mixture is passed into separate tank 12 and carries out solid, liquid, gas three phase separation after sending into and fully mixing with air in gas-liquid mixed tank 11 by upper strata mixed solution.Gas-liquid mixture utilizes microbubble to adsorb and carries oil-in-water and suspended substance and floats up to liquid level and form scum silica frost 13 in separate tank.The isolated scum silica frost 13 of separate tank 12 utilizes slag scraper to be recycled to oil skimming tank 14, the sewage 15 of separate tank 12 lower floor is sent into strainer 16 and is processed, the isolated oil recovery of filter top is to oil skimming tank 14, and the sewage that strainer is discharged is sent into sewage work 17 and carried out subsequent disposal.
Embodiment 1
By polyglycerol fatty acid ester (R=C 17) 15 parts, polyoxyethylene oleic acid ester (n=4) 8 parts, Trisodium Citrate 1 part, 76 parts, water is that in the reactor of 55 DEG C, Homogeneous phase mixing obtains greasy filth emulsion splitter in 45 minutes in temperature.
Embodiment 2
By polyglycerol fatty acid ester (R=C 16) 8 parts, polyoxyethylene oleic acid ester (n=3) 12 parts, Trisodium Citrate 1 part, 79 parts, water is that in the reactor of 50 DEG C, Homogeneous phase mixing obtains greasy filth emulsion splitter in 50 minutes in temperature.
Embodiment 3
By polyglycerol fatty acid ester (R=C 17) 25 parts, polyoxyethylene oleic acid ester (n=3) 6 parts, Trisodium Citrate 1 part, 68 parts, water is that in the reactor of 55 DEG C, Homogeneous phase mixing obtains greasy filth emulsion splitter in 50 minutes in temperature.
Embodiment 4
For certain refinery's tank bottom oil sludge, the specific embodiment of the invention is described.The greasy filth content analysis of charging is in table 1.Selected greasy filth emulsion splitter is with embodiment 3, and emulsion splitter dosage is 3% of greasy filth weight.Emulsion splitter mixing time in mud tempering tank is 35 minutes, and tempering tank temperature controls at about 65 DEG C.Adopt present invention process process greasy filth, the water ratio of discharging mud cake reduces to 50.4% ~ 53.5%, and oil length is 15.0% ~ 21.2%, as shown in table 2.By material balance, mud volume after processed at least reduces 10 times, greatly reduces the difficulty of mud subsequent disposal.Chemical oxygen demand (COD) (COD) in filtrate and suspended substance (SS) content as shown in table 3, it reduce the difficulty of later stage sewage disposal.Processed by present invention process by tank bottom oil sludge, final separate tank and the isolated scum silica frost of filter top are recycled to oil skimming tank, and the sewage that strainer is discharged is sent into sewage work and carried out subsequent disposal.Calculate according to charging-1, the final oil recovery rate of recycling treatment greasy filth technique of the present invention is 98.5%.
Table 1 greasy filth content analysis table.
Table 2 greasy filth dewatered cake content analysis table.
Label Water ratio (%) Oil length (%) Solid content (%)
Mud cake-1 51.7 18.6 29.7
Mud cake-2 50.4 15.0 34.6
Mud cake-3 53.5 21.2 25.3
Mud cake-4 53.3 20.8 25.9
Mud cake-5 52.9 20.5 26.6
Table 3 greasy filth dehydration filtrate content analysis table.
Comparative example 1
Selected greasy filth composition is with the charging-1 of embodiment 4, and selected treatment process is with embodiment 4, and just emulsion splitter is different.
According to 3% of greasy filth weight, medicine dissolving and adding system adds polyether type demulsifying agent SP169 in mud tempering tank.After the art breading of embodiment 1, separate tank and the isolated scum silica frost oil recovery of filter top are to oil skimming tank, and the sewage that strainer is discharged is sent into sewage work and carried out subsequent disposal.The final oil recovery rate of this technique is 77.9%.
Comparative example 2
Selected greasy filth composition is with the charging-1 of embodiment 4.
According to 3% of greasy filth weight, emulsion splitter is put into by dosing pump in the mud tempering tank storing greasy filth and is carried out the process of greasy filth breakdown of emulsion by medicine dissolving and adding system.Greasy filth after breakdown of emulsion process is pumped in slurry tank and carry out heat preservation settlement 8 hours, the greasy filth after sedimentation is passed in three-phase centrifuge and carries out three phase separation process.The final oil recovery rate of this technique is 85.7%.
Comparative example 3
Selected greasy filth composition is with the charging-1 of embodiment 4, and selected treatment process is with embodiment 4, and just emulsion splitter is different.By polyglycerol fatty acid ester (R=C 17) 27 parts, Trisodium Citrate 1 part, 72 parts, water is that in the reactor of 55 DEG C, Homogeneous phase mixing obtains greasy filth emulsion splitter A for 50 minutes in temperature.
According to 3% of greasy filth weight, medicine dissolving and adding system adds emulsion splitter A in mud tempering tank.After the art breading of embodiment 1, separate tank and the isolated scum silica frost oil recovery of filter top are to oil skimming tank, and the sewage that strainer is discharged is sent into sewage work and carried out subsequent disposal.The final oil recovery rate of this technique is 72.5%.
Comparative example 4
Selected greasy filth composition is with the charging-1 of embodiment 4, and selected treatment process is with embodiment 4, and just emulsion splitter is different.By polyoxyethylene oleic acid ester (n=3) 27 parts, Trisodium Citrate 1 part, 72 parts, water is that in the reactor of 55 DEG C, Homogeneous phase mixing obtains greasy filth emulsion splitter B for 50 minutes in temperature.
According to 3% of greasy filth weight, medicine dissolving and adding system adds emulsion splitter B in mud tempering tank.After the art breading of embodiment 1, separate tank and the isolated scum silica frost oil recovery of filter top are to oil skimming tank, and the sewage that strainer is discharged is sent into sewage work and carried out subsequent disposal.The final oil recovery rate of this technique is 63.8%.

Claims (9)

1. a greasy filth emulsion splitter, is characterized in that comprising with parts by weight: polyglycerol fatty acid ester 7 ~ 28 parts, polyoxyethylene oleic acid ester 3 ~ 14 parts, Green Additives 0.5 ~ 2 part, 58 ~ 92 parts, water; Wherein said Green Additives is one or more of Trisodium Citrate, sodium oleate, Sunmorl N 60S, sodium-chlor or Repone K.
2. according to greasy filth emulsion splitter according to claim 1, it is characterized in that: the structural formula of described polyglycerol fatty acid ester is ROCH 2cHOR (CH 2oCH 2cHOR) ncH 2oR, wherein R=H or C 4~ C 18fatty acyl group, n=0 ~ 10.
3. according to greasy filth emulsion splitter according to claim 1, it is characterized in that: the chemical structural formula of described polyoxyethylene oleic acid ester is (C 2h 4o) nc 18h 34o 2, wherein n=1 ~ 10.
4. according to greasy filth emulsion splitter according to claim 1, it is characterized in that: add one or more in type oxide film inhibiter, deposition membranous type inhibiter or adsorbed film type inhibiter in greasy filth emulsion splitter, the add-on of inhibiter accounts for 0.1% ~ 1% of greasy filth emulsion splitter weight.
5. a preparation method for greasy filth emulsion splitter according to claim 1, is characterized in that comprising following content: polyglycerol fatty acid ester, polyoxyethylene oleic acid ester, Green Additives and water are mixed and obtain greasy filth emulsion splitter; Wherein mixing time is 20 ~ 70 minutes, and mixing temperature is 40 ~ 60 DEG C.
6. a greasy filth emulsion splitter according to claim 1 is applied to the process of the various greasy filth that the harmless treatment of tank bottom oil sludge, scum silica frost and active sludge and oil production and Transportation Enterprise produce.
7. the greasy filth advanced treatment process of the greasy filth emulsion splitter described in use claim 1 of a kind, it is characterized in that comprising following content:: the oily sludge in storage sludge sump enters in mud tempering tank, add emulsion splitter, carry out breakdown of emulsion process, oily sludge after breakdown of emulsion enters folded spiral shell formula sludge dewatering equipment and carries out solid-liquid separation, obtain filtrate and mud cake, filtrate enters two-phase swirler and is separated, after two-phase laminated flow by the lower floor's residual sludge reflux in swirler to storage sludge sump, upper strata mixed solution sends into gas-liquid mixed tank and air mixed, then separate tank is entered, sump oil is separated with Preliminary sewage, sump oil utilizes slag scraper to be recycled to slop oil tank, sewage enters strainer, suspended particle in sewage is separated with water with residue sump oil, by isolated for filter top oil recovery to oil skimming tank, the sewage that strainer is discharged is sent into sewage work and is carried out subsequent disposal.
8. according to technique according to claim 7, it is characterized in that: emulsion splitter mixing time in mud tempering tank is 20 ~ 40 minutes, and tempering tank temperature controls at 50 ~ 70 DEG C.
9. according to technique according to claim 7, it is characterized in that: described separate tank is provided with flap shape slag-guiding plate device; Flap shape slag-guiding plate is made up of anterior swash plate, front straight plate, middle part swash plate, the straight plate in rear portion and rear portion swash plate, wherein the straight plate in middle part and the straight plate level in rear portion are placed, anterior swash plate is lower than front straight plate, middle part swash plate is lower than front straight plate, the straight plate in rear portion is lower than middle part swash plate, and rear portion swash plate is higher than the straight plate in rear portion.
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