CN108017250A - Pyrohydrolysis formula oily sediment Harmless and Comprehensive Disposal technique - Google Patents

Pyrohydrolysis formula oily sediment Harmless and Comprehensive Disposal technique Download PDF

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Publication number
CN108017250A
CN108017250A CN201711125774.7A CN201711125774A CN108017250A CN 108017250 A CN108017250 A CN 108017250A CN 201711125774 A CN201711125774 A CN 201711125774A CN 108017250 A CN108017250 A CN 108017250A
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China
Prior art keywords
quenched
sludge
oil
harmless
tank
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CN201711125774.7A
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Chinese (zh)
Inventor
袁东升
云玉良
吴向前
吴永强
刘军
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袁东升
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Priority to CN201711125774.7A priority Critical patent/CN108017250A/en
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/10Treatment of sludge; Devices therefor by pyrolysis
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/40Devices for separating or removing fatty or oily substances or similar floating material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/127Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00Treatment of sludge; Devices therefor
    • C02F11/12Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/14Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/10Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities

Abstract

The present invention relates to a kind of pyrohydrolysis formula oily sediment Harmless and Comprehensive Disposal technique.Mainly solve the problems, such as existing oil field oil-containing silt sedimentation technique it is simple, to halfway containing the disposal of oily sludge more than debris.It is characterized by comprising following steps:(One), sludge fluidisation and pretreatment:Solid particle of the diameter more than 5mm is discharged by separatory vessel and rotary drum separator;(Two), sludge it is quenched:The mixture that conveying comes sequentially enters the quenched tank of three series connection, is delivered to two-phase centrifuge by the separated oily sludge of quenched tank, oil slick is delivered to oil water separator;(Three), it is mechanically decoupled:Separation of solid and liquid is realized by two-phase centrifuge, oil water separator realizes water-oil separating.The pyrohydrolysis formula oily sediment Harmless and Comprehensive Disposal technique can handle that oil field species is different, the oily sludge of complicated component, can effectively realize oily sludge minimizing, harmless treatment, easy to operate, operating cost is low.

Description

Pyrohydrolysis formula oily sediment Harmless and Comprehensive Disposal technique
Technical field
It is specifically a kind of for the oil-containing produced during oil field production and crude Treatment the present invention relates to oilfield The pyrohydrolysis formula oily sediment Harmless and Comprehensive Disposal technique that sludge is handled.
Background technology
Since the source of oily sludge is different, its component, property are also not quite similar, and pass through the sampling to all kinds of oily sludges Analysis, the general oil-containing 15~50% of oily sludge, reaches as high as 60%.Wherein, sewage precipitation tank bed mud appearance is black, sticky Shape, containing Chuck Steak, emulsification is serious, and particle is fine and closely woven, and impurity is less, in " greasy filth " form of obvious distribution uniform;Oil tank bottom Mud oil-containing is most, and impurity is based on sandstone and mud;Three phase separator bed mud appearance is in mostly blackyellow, and oil-containing is more, sticky, particle Big compared with settling tank sediment particles, impurity is less, and greasy filth form is more uniform;It is miscellaneous containing bulky grain sandstone and weeds etc. in ground sludge Matter, density is larger, and greasy filth distributed pole is uneven, and greasy filth Crude Oil, silt particle component ratio change greatly.
Oily sludge is one of major pollutants produced in petrochemical enterprise exploitation and storage and transport process, and oily sludge obtains Less than timely processing, not only direct contaminated soil and groundwater resources, but also be also the huge waste to petroleum resources.Oil field contains Greasy dirt has been cited as dangerous solid waste, includes hazardous waste and is managed.
Major Sludge in Oilfields species is various, property is complicated, and original simple landfill, stacking processing mode do not only take up A large amount of soils, pollution environment, also make the economic benefit in oil field face huge loss.With country to environmental requirement increasingly Strictly, oily sludge is innoxious, minimizing, resource treatment technique are just becoming the inexorable trend of sludge disposal technology development.Band There are harmful substance and the higher oily sludge of oil content, can be by a great deal of in oily sludge using certain recycling technology Oil recovery, realize environmental improvement and prevent pollution while, certain economic benefit can be obtained.
Current each oil field is backward in technique mostly in technologies such as experiment application centrifugation, burnings, but technique is simple, especially It is to the oily sludge containing debris such as a large amount of clubs, stone, woven bag, polybags, also without relatively good counter-measure.
The content of the invention
In order to overcome existing oil field oil-containing silt sedimentation technique it is simple, to being not thorough containing the disposal of oily sludge more than debris Deficiency, the present invention provides a kind of pyrohydrolysis formula oily sediment Harmless and Comprehensive Disposal technique, the pyrohydrolysis formula sludge containing Harmless comprehensive processing technique can handle oil field species difference, the oily sludge of complicated component, can effectively realize containing greasy dirt Mud minimizing, harmless treatment, it is easy to operate, operating cost is low.
The technical scheme is that:A kind of pyrohydrolysis formula oily sediment Harmless and Comprehensive Disposal technique, including it is following Step:
(One), sludge fluidisation and pretreatment:Solid particle of the diameter more than 5mm is discharged by separatory vessel and rotary drum separator, Remaining mixture is transported to the quenched tank of No.1 by sludge lifting pump;
(Two), sludge it is quenched:By sludge lifting pump conveying Lai mixture sequentially enter the quenched tank of No.1, No. two quenched tanks, three Number quenched tank, adds steam in three quenched tanks, neutralizer, No. two quenched tanks and No. three tune is wherein added in the quenched tank of No.1 Demulsifier is added in matter tank, is delivered to two-phase centrifuge by the separated oily sludge of quenched tank, oil slick is delivered to water-oil separating Device;
(Three), it is mechanically decoupled:Flocculant is added into two-phase centrifuge, realizes separation of solid and liquid, Solid Conveying and Melting to dryer, liquid Into oil water separator;Crude oil after water-oil separating is pumped to appointed place by outer oil transportation, and rotary drum is flowed back in the water mixing of returning isolated In separator.
The step(One)In, raw material greasy filth is transported to separatory vessel by electronic bucket of grabbing, and separatory vessel vibrating screen is by diameter Solid material more than 50mm, which sorts out, drains into bulk materials collecting box, and mixture of the diameter less than 50mm is transported to rotary drum point From device;Steam heating is passed through into rotary drum separator, and adds the cleaning agent that compound concentration is 10%, dosage is material The 0.1 ~ 0.2% of quality, solid particle of the diameter more than 5mm is discharged, remaining mixture is transported to No.1 by sludge lifting pump Quenched tank.
The neutralizer that compound concentration is 10% is added in the quenched tank of No.1, dosage is the 0.1 ~ 0.3% of material;No. two The demulsifier that compound concentration is 10% is added in quenched tank, dosage is the 0.1 ~ 0.2% of material;Add and prepare in No. three quenched tanks Concentration is 10% demulsifier, and dosage is the 0.1 ~ 0.4% of material.
The flocculant that compound concentration is 1% is added in the two-phase centrifuge, dosage is the 0.1 ~ 0.3% of material.
The present invention has the advantages that:Due to taking such scheme, the present invention can waste oil recovery to greatest extent, return Yield is up to more than 96%, and the oily sludge moisture content after processing is less than 50%, and sludge oil content is less than 2%, after processing after processing Sand oil content is less than 0.5%.Sand can be used for well site pad road or successive depths to handle, energy saving and environmentally friendly, cycling utilization of wastewater, Du The secondary pollution of exhausted sewage, sludge, it is recycling after crude oil collection.The invention is with strong points, can be suitable for oil field sludge kind Class is more, complicated component, the characteristics of deriving from a wealth of sources;It is wide to handle sludge scope, it is old for the sludge of different solid contents, and each oil field Changing sludge etc. can effectively be handled, and process program is advanced, can effectively realize oily sludge minimizing, recycling, harmless treatment.
Brief description of the drawings
Fig. 1 is the flow chart of the present invention.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings:
A kind of pyrohydrolysis formula oily sediment Harmless and Comprehensive Disposal technique, comprises the following steps, flow chart is shown in Fig. 1:
(One), sludge fluidisation and pretreatment:Oily sludge is sorted, bulk solid impurity is removed from sludge.First Bucket is grabbed by manual control is electronic, solid fraction sludge year is grabbed into separatory vessel, and steam is passed through into separatory vessel, electrically operated valve can be used Control quantity of steam.The steam jet of triple layer nozzle is equipped with separatory vessel, it is ensured that sludge is in preferable fluidized state, leads to Cross vibrating screen to sort out and drain into bulk materials collecting box solid material of the diameter more than 50mm, diameter is less than the mixing of 50mm Thing is transported to rotary drum separator.Material enters inside the revolving cylinder of rotary drum separator, by turning round separation that diameter is big It will be discharged in the granule materials separation of 10mm, mixture of the diameter less than 10mm carries out sandstone sorting by being discharged in roller;To turn Steam is passed through in drum separator, control vapor (steam) temperature is at 85 DEG C or so, and it is 10% to add compound concentration by chemicals dosing plant Cleaning agent, dosage are the 0.1 ~ 0.2% of quality of material, and sediment by aeration, stirring, solid particle of the diameter more than 5mm is discharged, Remaining mixture is transported to the quenched tank of No.1 by sludge lifting pump.Pass through this procedure, it is ensured that oil content is less than in sand 0.5%。
(Two), sludge it is quenched:Be provided with three series connection quenched tanks, by sludge lifting pump conveying Lai mixture successively into Enter the quenched tank of No.1, No. two quenched tanks, No. three quenched tanks, can connect into mud.Steam is added in three quenched tanks, controls steam Temperature is both provided with heating coil at 85 DEG C or so in three quenched tanks, sludge is heated to 90 DEG C or so, tank deck is equipped with Blender, can be stirred sludge in tank and homogenize.Add and match somebody with somebody in the dosing into tank by chemicals dosing plant, the wherein quenched tank of No.1 Concentration processed is 10% neutralizer, and dosage is the 0.1 ~ 0.3% of material;Added in No. two quenched tanks compound concentration be 10% it is broken Emulsion, dosage are the 0.1 ~ 0.2% of material;The demulsifier that compound concentration is 10% is added in No. three quenched tanks, dosage is thing The 0.1 ~ 0.4% of material.Oily sludge stops 30 minutes to 60 minutes in No.1 and No. two quenched tanks, stops in No. three quenched tanks Stay 3 it is small when to 5 it is small when, the oil slick of tank internal upper part is flowed out from overflow port, is delivered to oil water separator;The oily sludge of bottom passes through Screw pump is delivered to two-phase centrifuge.
(Three), it is mechanically decoupled:Filter is provided with before two-phase centrifuge, removes larger solid particle, to two-phase centrifuge Interior to add the flocculant that compound concentration is 1%, dosage is the 0.1 ~ 0.3% of material, and separation of solid and liquid is realized by two-phase centrifuge, Gu Body is transported to dryer by screw rod conveyor, and incinerator is entered after drying and is burned;Liquid passes through screw pump after entering temporary storage tank It is delivered to oil water separator.Oil water separator is collected by the oil slick after three tune tanks and two centrifuges separation, to water-oil separating Steam is passed through in device, vapor (steam) temperature is at 85 DEG C ~ 90 DEG C.The crude oil of collection periodically starts outer oil transportation and is pumped to appointed place, separates The water mixing of returning gone out is flow back into rotary drum separator certainly, and the mud mixture that separatory vessel is sent enters back into next procedure together, Move in circles.

Claims (4)

1. a kind of pyrohydrolysis formula oily sediment Harmless and Comprehensive Disposal technique, it is characterised in that comprise the following steps:
(One), sludge fluidisation and pretreatment:Solid particle of the diameter more than 5mm is discharged by separatory vessel and rotary drum separator, Remaining mixture is transported to the quenched tank of No.1 by sludge lifting pump;
(Two), sludge it is quenched:By sludge lifting pump conveying Lai mixture sequentially enter the quenched tank of No.1, No. two quenched tanks, three Number quenched tank, adds steam in three quenched tanks, neutralizer, No. two quenched tanks and No. three tune is wherein added in the quenched tank of No.1 Demulsifier is added in matter tank, is delivered to two-phase centrifuge by the separated oily sludge of quenched tank, oil slick is delivered to water-oil separating Device;
(Three), it is mechanically decoupled:Flocculant is added into two-phase centrifuge, realizes separation of solid and liquid, Solid Conveying and Melting to dryer, liquid Into oil water separator;Crude oil after water-oil separating is pumped to appointed place by outer oil transportation, and rotary drum is flowed back in the water mixing of returning isolated In separator.
2. pyrohydrolysis formula oily sediment Harmless and Comprehensive Disposal technique according to claim 1, it is characterised in that:It is described Step(One)In, raw material greasy filth is transported to separatory vessel, separatory vessel vibrating screen consolidating more than 50mm by diameter by electronic bucket of grabbing Body material, which sorts out, drains into bulk materials collecting box, and mixture of the diameter less than 50mm is transported to rotary drum separator;To turn Drum separator in be passed through steam heating, and add compound concentration be 10% cleaning agent, dosage for quality of material 0.1 ~ 0.2%, solid particle of the diameter more than 5mm is discharged, remaining mixture is transported to the quenched tank of No.1 by sludge lifting pump.
3. pyrohydrolysis formula oily sediment Harmless and Comprehensive Disposal technique according to claim 2, it is characterised in that:It is described The neutralizer that compound concentration is 10% is added in the quenched tank of No.1, dosage is the 0.1 ~ 0.3% of material;Added in No. two quenched tanks Compound concentration is 10% demulsifier, and dosage is the 0.1 ~ 0.2% of material;It is 10% that compound concentration is added in No. three quenched tanks Demulsifier, dosage are the 0.1 ~ 0.4% of material.
4. pyrohydrolysis formula oily sediment Harmless and Comprehensive Disposal technique according to claim 3, it is characterised in that:It is described The flocculant that compound concentration is 1% is added in two-phase centrifuge, dosage is the 0.1 ~ 0.3% of material.
CN201711125774.7A 2017-11-15 2017-11-15 Pyrohydrolysis formula oily sediment Harmless and Comprehensive Disposal technique Withdrawn CN108017250A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109721219A (en) * 2019-01-16 2019-05-07 西安华盛坤泰能源环保科技有限公司 The processing method and system of oil-base mud are discarded in a kind of drilling well
CN112551839A (en) * 2020-12-10 2021-03-26 北京新风航天装备有限公司 Process for treating oily sludge
CN113121075A (en) * 2019-12-31 2021-07-16 中国石油化工股份有限公司 Treatment method for polymer-containing oil sludge sand

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101602566A (en) * 2009-07-10 2009-12-16 北京惠博普能源技术有限责任公司 A kind of novel process for comprehensively treating at oil field oil-containing mud
CN101963358A (en) * 2010-09-30 2011-02-02 昆明理工大学 Combined treatment method for oilfield solid waste
CN102039301A (en) * 2010-09-30 2011-05-04 昆明理工大学 Oily sludge recycling and innocent comprehensive treatment process
CN104876406A (en) * 2015-05-12 2015-09-02 福建省科辉环保工程有限公司 Deep recycling process and system for oily sludge
CN105174669A (en) * 2015-09-30 2015-12-23 达州军华环保科技有限公司 Harmless treatment technology for waste oil base mud

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101602566A (en) * 2009-07-10 2009-12-16 北京惠博普能源技术有限责任公司 A kind of novel process for comprehensively treating at oil field oil-containing mud
CN101963358A (en) * 2010-09-30 2011-02-02 昆明理工大学 Combined treatment method for oilfield solid waste
CN102039301A (en) * 2010-09-30 2011-05-04 昆明理工大学 Oily sludge recycling and innocent comprehensive treatment process
CN104876406A (en) * 2015-05-12 2015-09-02 福建省科辉环保工程有限公司 Deep recycling process and system for oily sludge
CN105174669A (en) * 2015-09-30 2015-12-23 达州军华环保科技有限公司 Harmless treatment technology for waste oil base mud

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109721219A (en) * 2019-01-16 2019-05-07 西安华盛坤泰能源环保科技有限公司 The processing method and system of oil-base mud are discarded in a kind of drilling well
CN113121075A (en) * 2019-12-31 2021-07-16 中国石油化工股份有限公司 Treatment method for polymer-containing oil sludge sand
CN112551839A (en) * 2020-12-10 2021-03-26 北京新风航天装备有限公司 Process for treating oily sludge

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Application publication date: 20180511