CN104230132A - Oilfield oil sludge treatment method - Google Patents

Oilfield oil sludge treatment method Download PDF

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Publication number
CN104230132A
CN104230132A CN201410475517.6A CN201410475517A CN104230132A CN 104230132 A CN104230132 A CN 104230132A CN 201410475517 A CN201410475517 A CN 201410475517A CN 104230132 A CN104230132 A CN 104230132A
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China
Prior art keywords
oil
water
homogeneous
greasy filth
speed
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CN201410475517.6A
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Chinese (zh)
Inventor
赵海洲
王晓旭
王景春
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KARAMAY HUALONG RUNJIE ECOLOGICAL ENVIRONMENT SCIENCE & TECHNOLOGY Co Ltd
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KARAMAY HUALONG RUNJIE ECOLOGICAL ENVIRONMENT SCIENCE & TECHNOLOGY Co Ltd
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Priority to CN201410475517.6A priority Critical patent/CN104230132A/en
Publication of CN104230132A publication Critical patent/CN104230132A/en
Pending legal-status Critical Current

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Abstract

The invention provides an oilfield oil sludge treatment method. Oil sludge is fed into a homogeneous agitation tank at the speed of 4 m<3>/h by a screw feeder and jetted by pressurized hot water at the temperature of 65-80 DEG C, the ratio of oil sludge to water is (1:4)-(1:6), then the mixture is heated to 80-95 DEG C, agents comprising, by concentration, 0.5%-1.2% w/w of a demulsifying agent, 1.0%-2.0% w/w of a gel breaker and 10%-15% w/w of an organic solvent are added and stirred for 60-90 min at the speed of 20-30 r/min, a floating oil liquid is drained, a product is input into a horizontal spiral separating machine for separation at the rotating speed of 2,800-3,000 r/min, the oil liquid after separation enters a trapezoidal sedimentation tank, after natural setting is performed for 4 h under the condition of 85 DEG C, an upper layer oil liquid is recovered, precipitate that does not meet the draining standard is subjected to secondary heating, agent adding, stirring, washing and deoiling disposal, the sand content in oil after final treatment is 0.5%-0.8%, the oil content in silt and sand is 0.3%-2.0%, and the water content in oil is 0.5%-2.0%.

Description

A kind of method processing oil field oil sludge
Technical field
The present invention relates to oil field oil sludge treatment technology, especially for the remarketing of dead meal, the equipment of employing and the integrated treatment effect of medicament splendid.
Background technology
Oily sludge is oil production, transport, the oil-containing solids waste produced in the operation process such as refining and oily water treatment, there is water content high, volume is large, complicated component, intractability is large, objectionable constituent majority exceedes emission standard, containing features such as higher calorific values, oily sludge is bulky, if do not processed directly discharge, not only take a large amount of arable land, and produce a large amount of foul gas, to surrounding soil, water body, air pollutes, after petroleum substance in greasy filth infiltrates soil, the surface of soil particle can be adhered to, affect the permeability of soil, hinder effective soil hydraulic path, soil water percolating capacity is declined, water-permeable reduces, as can be seen here, the existence of oily sludge exerts an adverse impact to surrounding environment quality, it is a larger difficult problem in current solid waste disposal.
The technology such as modified-mechanical separation technology and the burning of revolution boiler is mainly applied in early days to process oily sludge in China oil field.Oil field, the west of Liaoning is now still at use greasy filth ' three points of mud machines ' process oily sludge, but rely on the technology of natural subsidence to there is process thoroughly not discharge silt particle and do not reach GB4284-84 standard, easily produce the problem of secondary pollution.Literature search disclose 2013106911475 and 2012102220539 patent all relate to adopt enforcements of homogeneous tank, oil, water, silt mix heat, dosing, homogeneous phase, gas explosion, precipitation, the technique such as mechanical separation.But its only describe oil, water liquid homogeneous phase, really do not realize the homogeneous disposal of oil, water, silt particle three, only highlight the recycling to natural floating oil spill, make the emission standard of the oil sludge and sand meet the requirement of environmental protection after process break glue and force stripping to be crux to the oleaginous materials of silt particle top layer parcel, and oil, water, silt particle three homogeneous phase condition instability can cannot provide stable charging processing condition to follow-up mechanical spiral centrifugation, and output object can be made unstable.Again with according to the similar " principle that mixes of ", the ketones solvent of high resolution is selected to be used as gel breaker, the present invention because 80-95 DEG C need be warming up at processing link therefore select high boiling pimelinketone.The use of gel breaker improves stripping, washing effect.Organic solvent selects low-density No. 200 solvent oils or aromatic solvent naphtha, both can strengthen dissolving, the effect of washing also can make the bituminous matter class material density that washes out decline simultaneously, and can not be mixed in silt particle not easily separated because of the excessive sinking of density.Obviously be more convenient for later stage machinery, natural separation in the density boundary line of oil, water, silt particle.
The present invention is based on above technical background, propose the method for the comprehensive treating process greasy filth such as water filling, heating, medicament, metal object absorption, the powerful mechanical stirring of coaxial two-direction, broken glue, breakdown of emulsion, solvent wash, aeration disturbance, homogeneous, Light ends petroleum vapor recovery, emchanically centrifugal separation, trapezoidal natural sedimentation, for the energy-saving and cost-reducing of enterprise serves exemplary role.
Summary of the invention
The object of the invention is to: adopt the method dispose greasy filth reach environmental protection, harmless discharge requirement, solve institute discharge greasy filth pollution environmental issue.
The object of the present invention is achieved like this: a kind of method processing oil field oil sludge, adopts screw feeder by thickness or semi-solid greasy filth with 4m 3the input speed of/h is placed in homogeneous stirred pot, first fall at fill process Raw and tell the raw material of device with strong magnetic and be that 65-80 DEG C of hot water with pressure makes greasy filth preliminary exposition with temperature, its greasy filth and water are than being 1:4-1:6, heat to 80-95 DEG C, drug concentration is respectively emulsion splitter 0.5-1.2%w/w, gel breaker 1.0-2.0%w/w, organic solvent 10-15%w/w, churning time is 60-90min, stirring velocity is 20-30r/min, make medicament, floating fluid is first discharged after water and greasy filth fully wash, defeated in horizontal spiral separating machine under aeration disturbance homogeneous state, at rotary drum maximum speed: by oil under 2800-3000r/min speed conditions, water, husky separation, fluid after separation enters production settling tank, with in the domatic settling tank of tooth-shape structure, 85 dEG Cupper strata fluid is reclaimed after natural subsidence 4h under companion's heat condition, the recycling precipitate not reaching emission standard enters in homogeneous stirred pot implements second-heating, medicament, agitator treating, oil removing disposal, percent sand in the rear oil of final processing is made to be 0.5-0.8%, in silt particle, oil length is 0.3-2.0%, and Water in oil rate is 0.5-2.0%.
The material inlet place, homogeneous agitator treating tank top of described method arranges ferrous metal adsorption unit, and its device is that the additional high-strength magnetic patch of ABS industry plastic cement reticulated structure is formed.
The homogeneous of described method stirs feeding mouth place and adopts the warm high pressure spraying water filling of band, and its water temp is 65-80 dEG C, spraying pressure is 3.5-8.0MPa.
The homogeneous of described method stirs and adopts coaxial two-direction agitator, it is made up of motor, speed reduction unit, step-down gear and output hollow shaft, output shaft, the output sleeve of speed reduction unit is contained in the output hollow shaft of step-down gear, to realize having two output shaft drive sources to drive paddle on same axle head.(this device is outsourcing)
The formation of the trapezoidal settling tank of described method be band fall tooth-shape structure be greater than 35 degree domatic structure pond, make low flow velocity oil-water fluid to enter in the process of pond contained tiny silt particle particle and depositing in water at the bottom of tooth-shape structure and pond in.
Described method under the similar " principle that mixes of ", select gel breaker be the market purchasings such as SH9101, AE2040, BP169 organic and inorganic emulsion splitter with reduce emulsified state strengthen oily water separation, three kinds of additives can mix and add simultaneously.Processing link need be warming up to 80-95 DEG C, selects high boiling pimelinketone, uses the stripping of gel breaker, washing effect.Organic solvent selects low-density No. 200 solvent oils or aromatic solvent naphtha, not only can strengthen dissolving, the effect of washing but also make the bituminous matter class material density washed out decline, can not be mixed in silt particle not easily separated because of the excessive sinking of density.Oil, water, silt particle density boundary line be obviously more convenient for the later stage be separated.
Described method is provided with closing device and petroleum vapor recovery pipeline at material inlet place, homogeneous agitator treating tank top.The lower boiling oil gas produced in intensification whipping process is recyclable to be fed back in fluid after condensation, accomplish safety in production.
According to oil in oily sludge, silt particle, the existence of water, pass through water filling, heat, dosing, powerful mechanical stirring, broken glue, breakdown of emulsion, solvent wash, aeration disturbance, homogeneous, high speed machine centrifugation, the methods such as the trickle silt particle particle (diameter is less than 5u) of natural subsidence, change oil, silt particle, water there is distribution, the oily burnt-in sand phenomenon in original greasy filth is made progressively to become water burnt-in sand, reduce crude oil to the inclusion viscosity of silt particle, make it under homogeneous phase condition, enter whizzer, oil, water, silt particle is able to abundant separation, alleviate the load of supercentrifuge, improve the treatment capacity of device, reduce unit consumption of energy, emphasis process silt particle oil-containing phenomenon, the silt particle surface making to be separated and inner oil-containing are down to bottom line, reach environmental emission standard, show technical progress.
Accompanying drawing explanation
The present invention is described further by reference to the accompanying drawings.
Accompanying drawing 1 is the stirring of coaxial two-direction tool, washing, aeration disturbance homogeneous device structural representation.
As shown in the figure: heat coil pipe, 6-agitator motor, 7-coaxial two-direction step-down gear, 8-gasoline relief outlet, 9-compressed air inlet pipe, the left-handed blade of 10-, 11-dextrorotation blade, 12-oil spilling mouth, 13-equal pledge relief outlet, the equal pledge of 14-of 1-screw feeding machine, 2-high pressure spraying water filling, 3-opening for feed oil plant securing device, 4-magnet adsorption net, 5-steam discharges cut-off net, 15-compressed air inlet pipe.
Accompanying drawing 2 is trapezoidal settling tank structural representation.
As shown in the figure: 16-feed liquor sluice gate, 17-profile of tooth precipitation slope, 18-reinforced concrete pond, the fuel-displaced sluice gate of 19-, 20-steam coils, the thin silt particle of 21-are collected and discharged.
Embodiment
The present invention is described further in conjunction with the embodiments.
Operative technique main points:
1) homogeneous stirs feeding mouth place and adopts the warm high pressure spraying water filling of band, makes oil sludge and sand preliminary exposition.
2) material inlet place, homogeneous agitator treating tank top arranges ferrous metal adsorption unit, and absorption magnetic patch is arranged on hurdle basket periphery and the bottom of feed(raw material)inlet.
3) use the gel breaker of high resolution, solvent promotion to the stripping of silt particle top layer parcel oil reservoir, the bituminous matter class material density washed out also can be made simultaneously to decline, can not be mixed in silt particle not easily separated because of the excessive sinking of density.
4) homogeneous stirs and adopts coaxial two-direction agitator, be made up of motor, speed reduction unit, step-down gear and output hollow shaft, output shaft, the output sleeve of speed reduction unit is contained in outside the output hollow shaft of step-down gear, produces two-way eddy current strengthen washing effect to realize having two output shaft drive sources to drive paddle on same axle head.
5) use that emulsion splitter makes oil, water two-phase is fully separated.
6) adopt the sedimentation of special construction settling tank natural secondary, improve recovery Oil Quality, saved energy consumption equipment input.
7) present method arrange ladder structure settling tank can make mechanical separation after fluid in a small amount of fine silt particle (diameter is less than 5u) and water companion heat condition under viscosity reduce, according to its natural difference in specific gravity Xuan slug flow speed and static conditions under again settlement separate, decrease the use of mechanical means.
Description of equipment
1) arrange the coaxial two-direction step-down gear connecting agitator motor in the central position of homogeneous tank, coaxial two-direction step-down gear bottom arranges left-handed blade, dextrorotation blade; Set gradually screw feeding machine, high pressure spraying water filling, opening for feed oil plant securing device, magnet adsorption net, compressed air inlet pipe 9 respectively in the side of homogeneous tank, steam is heated coil pipe; Gasoline relief outlet, compressed air inlet pipe 15, oil spilling mouth is set gradually respectively at the opposite side of homogeneous tank; Equal pledge relief outlet, all pledge are set in the bottom of homogeneous tank and discharge cut-off net.
2) profile of tooth precipitation slope is set in reinforced concrete pond, feed liquor sluice gate is set in profile of tooth precipitation upper end, slope; Fuel-displaced sluice gate, steam coils, thin silt particle collection relief outlet are set in profile of tooth precipitation lower end, slope.
Production example 1
1) choose the ground sludge of Karamay oilfield oil producing region, it is semi-solid, in pitch black brown, assembles coagulum without obvious crude oil, and the attachment of crude oil and soil is tight, its greasy filth oil-containing 14.30%, moisture 34.60%, and all the other are solid matter.
2) screw feeder is adopted, by 4m 3thickness greasy filth pushes in the warm high pressure spraying water filling basket of band by the input speed of/h, carry out ferrous metal adsorbing and removing simultaneously, condition: Heating temperature 90 DEG C, churning time 60min, solid-to-liquid ratio is 1:4, drug concentration is respectively emulsion splitter 0.5%w/w, gel breaker 1.0%w/w, organic solvent 10%w/w, start agitator treating, after heating, medicament, oil removing, aeration homogeneous, centrifugation natural subsidence combination process, in the fluid reclaimed, percent sand is 0.4%, in silt particle, oil length is 0.3%, and Water in oil rate is 0.8%.
Production example 2
1) the Karamay oilfield Fengcheng City oil recovery factory's greasy filth chosen, it is semi-fluid shape, and in pitch black brown, have obvious crude oil to assemble coagulum, oil-containing 51.30%, moisture 9.25%, all the other are solid matter.This greasy filth because of its from mink cell focus exploiting field, therefore bituminous matter, gum level are high, outward appearance partly to flow shape in comparing thickness.
2) screw feeder is adopted, by 4m 3thickness greasy filth pushes in the warm high pressure spraying water filling basket of band by the input speed of/h, carry out metal adsorption simultaneously removes, condition: Heating temperature 90 DEG C, churning time 80min, solid-to-liquid ratio is 1:5, drug concentration is respectively emulsion splitter 1.0%w/w, gel breaker 1.5%w/w, organic solvent 15%w/w, start agitator treating, after heating, medicament, oil removing, aeration homogeneous, centrifugation natural subsidence combination process, in the fluid reclaimed, percent sand is 0.6%, in silt particle, oil length is 0.6%, and Water in oil rate is 1.2%.
Production example 3
1) Karamay oilfield chosen is recovered the oil five factory's greasy filth, its oil-containing 13.60%, and moisture 20.25%, all the other are solid matter, and this greasy filth is that with the passing of time aging greasy filth is deposited in oil field, therefore bituminous matter, gum level are high, almost without Light ends.
2) screw feeder is adopted, by 4m 3thickness greasy filth pushes in the warm high pressure spraying water filling basket of band by the input speed of/h, carry out metal adsorption simultaneously removes, condition: Heating temperature 95 DEG C, churning time 90min, solid-to-liquid ratio is 1:6, drug concentration is respectively emulsion splitter 1.2%w/w, gel breaker 2.0%w/w, organic solvent 15%w/w, start agitator treating, after heating, medicament, oil removing, aeration homogeneous, centrifugation natural subsidence combination process, in the fluid reclaimed, percent sand is 0.8%, in silt particle, oil length is 2.0%, and Water in oil rate is 2.0%.
Technique effect checking of the present invention:
1) fluid after adopting water filling, heating, medicament, oil removing, aeration homogeneous, centrifugation, natural subsidence combination process makes percent sand in the rear oil of final processing be 0.5-0.8% after entering and producing settling tank 2 natural-dehydrations, sand fallout, in silt particle, oil length is 0.3-2.0%, Water in oil rate is 0.5-2.0%
2) after being separated, waste water solution recycles, after treatment to reduce use cost.

Claims (6)

1. process a method for oil field oil sludge, it is characterized in that: adopt screw feeder by greasy filth with 4m 3the input speed of/h is placed in homogeneous stirred pot, and adopt 65-80 DEG C of hot water's greasy filth with pressure, its greasy filth and water are than being 1:4-1:6, heat to 80-95 DEG C, add medicament, its concentration is respectively emulsion splitter 0.5-1.2%w/w, gel breaker 1.0-2.0% w/w, organic solvent 10-15% w/w, with 20-30r/min stirring velocity, stir 60-90min, make medicament, after water and greasy filth fully wash, first discharge floating fluid, defeated in horizontal spiral separating machine under aeration disturbance homogeneous state, by oil under 2800-3000r/min rotating speed, water, silt is separated, fluid after separation enters in trapezoidal settling tank, under 85 DEG C of conditions after natural subsidence 4h, reclaim upper strata fluid, the recycling precipitate not reaching emission standard enters in homogeneous stirred pot implements second-heating, medicament, agitator treating, oil removing is disposed, percent sand in the rear oil of final processing is made to be 0.5-0.8%, in silt particle, oil length is 0.3-2.0%, Water in oil rate is 0.5-2.0%.
2. according to method described in claim 1, it is characterized in that: material inlet place, homogeneous agitator treating tank top arranges ferrous metal adsorption unit, this device is made up of the additional high-strength magnetic patch of ABS industry plastic cement reticulated structure.
3. according to method described in claim 1, it is characterized in that: homogeneous stirs feeding mouth place and adopts the warm high pressure spraying water filling of band, and its water temp is 65-80 DEG C, spraying pressure is 3.5-8.0MPa.
4. according to method described in claim 1, it is characterized in that: homogeneous stirs and adopts coaxial two-direction agitator, be made up of motor, speed reduction unit, step-down gear and output hollow shaft, output shaft, the output sleeve of speed reduction unit is contained in the output hollow shaft of step-down gear, to realize having two output shaft drive sources to drive paddle on same axle head.
5. according to method described in claim 1, it is characterized in that: trapezoidal settling tank is the domatic structure being greater than 35 degree of band pawl shape.
6., according to method described in claim 1, it is characterized in that: on homogeneous agitator treating tank top, material inlet place is provided with closing device and petroleum vapor recovery pipeline.
CN201410475517.6A 2014-09-17 2014-09-17 Oilfield oil sludge treatment method Pending CN104230132A (en)

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Cited By (4)

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CN104876404A (en) * 2015-04-23 2015-09-02 荣盛康洁(北京)生物环保科技有限公司 Method for cleaning oil-based sludge detritus
CN105888634A (en) * 2016-06-20 2016-08-24 安庆宜源石油机械配件制造有限责任公司 Petroleum mechanical device suitable for thickened oil recovery
CN107352765A (en) * 2017-09-07 2017-11-17 唐山市瑞玛环保科技有限公司 Oil Containing Sludge Treatment and processing system
CN108101572A (en) * 2017-12-26 2018-06-01 陕西延长石油(集团)有限责任公司 The method that high viscosity tank bottom oily sludge coupling coal chemical industry solid waste prepares light ceramic

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Publication number Priority date Publication date Assignee Title
CN104876404A (en) * 2015-04-23 2015-09-02 荣盛康洁(北京)生物环保科技有限公司 Method for cleaning oil-based sludge detritus
CN105888634A (en) * 2016-06-20 2016-08-24 安庆宜源石油机械配件制造有限责任公司 Petroleum mechanical device suitable for thickened oil recovery
CN107352765A (en) * 2017-09-07 2017-11-17 唐山市瑞玛环保科技有限公司 Oil Containing Sludge Treatment and processing system
CN108101572A (en) * 2017-12-26 2018-06-01 陕西延长石油(集团)有限责任公司 The method that high viscosity tank bottom oily sludge coupling coal chemical industry solid waste prepares light ceramic
CN108101572B (en) * 2017-12-26 2021-02-02 陕西延长石油(集团)有限责任公司 Method for preparing light ceramsite by coupling oil-containing sludge at bottom of high-viscosity tank with solid waste in coal chemical industry

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