CN109179930B - A method for three-phase separation of oil, mud and water in tank bottom sludge and efficient recovery of oil in sludge - Google Patents
A method for three-phase separation of oil, mud and water in tank bottom sludge and efficient recovery of oil in sludge Download PDFInfo
- Publication number
- CN109179930B CN109179930B CN201811156575.7A CN201811156575A CN109179930B CN 109179930 B CN109179930 B CN 109179930B CN 201811156575 A CN201811156575 A CN 201811156575A CN 109179930 B CN109179930 B CN 109179930B
- Authority
- CN
- China
- Prior art keywords
- oil
- phase
- water
- outlet
- solid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 74
- 239000010802 sludge Substances 0.000 title claims abstract description 58
- 238000011084 recovery Methods 0.000 title claims abstract description 16
- 238000005191 phase separation Methods 0.000 title claims abstract description 7
- 239000012071 phase Substances 0.000 claims abstract description 69
- 230000008569 process Effects 0.000 claims abstract description 43
- 238000000926 separation method Methods 0.000 claims abstract description 35
- 239000007790 solid phase Substances 0.000 claims abstract description 30
- 239000007791 liquid phase Substances 0.000 claims abstract description 29
- 239000012535 impurity Substances 0.000 claims abstract description 22
- 239000007787 solid Substances 0.000 claims abstract description 19
- 239000002283 diesel fuel Substances 0.000 claims abstract description 14
- 239000003921 oil Substances 0.000 claims description 99
- 239000013527 degreasing agent Substances 0.000 claims description 24
- 239000002245 particle Substances 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 12
- 238000004581 coalescence Methods 0.000 claims description 10
- 230000005684 electric field Effects 0.000 claims description 10
- 239000000835 fiber Substances 0.000 claims description 10
- 238000000605 extraction Methods 0.000 claims description 9
- 230000009471 action Effects 0.000 claims description 8
- 238000004090 dissolution Methods 0.000 claims description 6
- 238000005188 flotation Methods 0.000 claims description 6
- 239000012528 membrane Substances 0.000 claims description 6
- 230000002209 hydrophobic effect Effects 0.000 claims description 5
- 239000011499 joint compound Substances 0.000 claims description 5
- 239000011148 porous material Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000004064 recycling Methods 0.000 description 4
- 238000009941 weaving Methods 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 238000005194 fractionation Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- C02F11/002—Sludge treatment using liquids immiscible with water
-
- 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
-
- 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
- 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
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
-
- 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
- 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
- C10G1/04—Production of liquid hydrocarbon mixtures from oil-shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal by extraction
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- 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
- C02F1/48—Treatment of water, waste water, or sewage with magnetic or electric fields
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Mechanical Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Treatment Of Sludge (AREA)
- Centrifugal Separators (AREA)
Abstract
本发明涉及一种罐底油泥中油、泥、水三相分离以及油泥中油的高效回收的方法。该方法包括下述步骤：第一步：用20℃～90℃的柴油对罐底油泥溶解萃取；之后对10um～1000um的大颗粒固体杂质进行分离，再对不大于10um小颗粒固体杂质进行分离，分离出的杂质经过压滤机处理，实现固相和液相的分离；最后对液相中油相和水相预分离，再分别对预分离的水相和油相进行深度分离。油泥处理后，油泥中98％的油被回收，并且所加入柴油在整个流程中循环使用，无需大量补给。本发明所方法可以高效地回收油泥中的油资源，同时实现了油泥的无害化处理。本发明具有油的回收率高、维护成本低、运行稳定可靠、适应性强、二次污染小等优点。
The invention relates to a method for three-phase separation of oil, mud and water in tank bottom sludge and efficient recovery of oil in sludge. The method includes the following steps: the first step: dissolving and extracting the oil sludge at the bottom of the tank with diesel oil at a temperature of 20 ℃ to 90 ℃; then separating the large solid impurities of 10 um to 1000 um, and then separating the small solid impurities of no more than 10 um. , the separated impurities are processed by a filter press to realize the separation of solid phase and liquid phase; finally, the oil phase and water phase in the liquid phase are pre-separated, and then the pre-separated water phase and oil phase are separated in depth. After the sludge treatment, 98% of the oil in the sludge is recovered, and the added diesel is recycled in the whole process without a lot of replenishment. The method of the invention can efficiently recover the oil resources in the oil sludge, and at the same time realize the harmless treatment of the oil sludge. The invention has the advantages of high oil recovery rate, low maintenance cost, stable and reliable operation, strong adaptability, little secondary pollution and the like.
Description
技术领域technical field
本发明涉及油泥回收油领域，特别涉及炼厂罐底油泥中油、泥、水三相分离以及油泥中油的高效回收的方法。The invention relates to the field of oil recovery from sludge, in particular to a method for three-phase separation of oil, mud and water in oil sludge in a refinery tank bottom and efficient recovery of oil in oil sludge.
背景技术Background technique
在石化领域中，从原油的开采到炼制的过程都涉及到用油罐储存原油或成品油，长时间存储时，原油中的高熔点蜡、沥青质、胶质和所夹带的固体颗粒以及水一起变成均相的沉淀物，形成罐底油泥。不仅减少了储罐的储量，而且会影响相关联的工艺流程，造成相关产品质量下降；同时油泥中还含有相当可观的一部分油，如果作为危险废弃物处理，不仅造成大量油品的资源浪费，而且污染环境。In the petrochemical field, the process from crude oil extraction to refining involves the storage of crude oil or refined oil in oil tanks. When stored for a long time, the high melting point wax, asphaltene, gum and entrained solid particles in crude oil and Together, the water becomes a homogeneous sediment, forming tank bottom sludge. It not only reduces the reserves of the storage tank, but also affects the related technological process, resulting in a decline in the quality of related products; at the same time, the sludge also contains a considerable part of oil. If it is treated as hazardous waste, it will not only cause a lot of waste of oil resources, and pollute the environment.
罐底油泥既是一种危险废物，同时也是一种可贵的能源资源，目前处理油泥的技术主要有溶剂萃取、热化学洗涤、焦化处理、热解吸附处理、固定化处理、就地生物处理等。罐底油泥最大的问题是强粘性、均相稳定难分离。直接采用三相分离，效果很差；直接热解容易导致结焦；单纯采用溶剂萃取，运行成本高。Tank bottom sludge is not only a kind of hazardous waste, but also a valuable energy resource. At present, the technologies for sludge treatment mainly include solvent extraction, thermochemical washing, coking treatment, thermal desorption treatment, immobilization treatment, in-situ biological treatment, etc. The biggest problem of tank bottom sludge is strong viscosity, stable homogeneous phase and difficult separation. The direct use of three-phase separation has poor effect; direct pyrolysis is likely to lead to coking; pure solvent extraction has high operating costs.
因此，通过结合罐底油泥所在化工厂已有的资源以及工艺流程，开发一种新型实际的罐底油泥的处理方法具有十分重要的意义。Therefore, it is of great significance to develop a new practical tank bottom sludge treatment method by combining the existing resources and technological processes of the chemical plant where the tank bottom sludge is located.
发明内容SUMMARY OF THE INVENTION
针对目前罐底油泥成分复杂与性质稳定难分离的问题，本发明提供了一种运行稳定、油回收率高、成本低廉、无二次污染的罐底油泥资源化回收油的处理方法，包括下述步骤：Aiming at the problems of complex composition of tank bottom sludge and difficult separation of stable properties at present, the present invention provides a method for treating tank bottom sludge by recycling oil, which is stable in operation, high in oil recovery rate, low in cost and free of secondary pollution, comprising the following steps: Describe the steps:
(1)首先，含水、泥、油的原料油泥与柴油罐来的柴油在径向管式洗涤器中充分混合均匀，同时油泥中的油被溶解萃取到稀油中。(1) First, the raw sludge containing water, mud and oil and the diesel oil from the diesel tank are fully mixed in the radial tube scrubber, and the oil in the sludge is dissolved and extracted into thin oil.
(2)经稀油溶解萃取后的油泥在离心机中进行固液两相的初步分离，实现大颗粒固体杂质的分离，进入压滤机。(2) Preliminary separation of solid-liquid two-phase is carried out in the centrifuge to realize the separation of large-particle solid impurities, and then enter the filter press.
(3)从离心机中分离出的液相经过精细过滤器，通过控制滤膜孔径，实现小颗粒固体杂质的分离，进入压滤机。(3) The liquid phase separated from the centrifuge passes through the fine filter, and by controlling the pore size of the filter membrane, the separation of small particles of solid impurities is realized, and then enters the filter press.
(4)从离心机和精细过滤器分离出的固相杂质经过压滤机，固相杂质中残余的液相被压出进入快速分离器的入口，固相杂质被压成块状进入到整个流程的固相出口，固液两相得到完全分离。(4) The solid-phase impurities separated from the centrifuge and the fine filter pass through the filter press, and the residual liquid phase in the solid-phase impurities is pressed out into the inlet of the rapid separator, and the solid-phase impurities are pressed into blocks and enter the entire At the solid phase outlet of the process, the solid and liquid phases are completely separated.
(5)经精细过滤器和压滤机分离出的液相进入快速分离器中，依次经过多轴式旋流分离器的离心作用、波纹板以及斜板的聚结作用，油水两项得到初步分离，含有少部分水的油相从快速分离器的顶部出口出，含有少部分油的水相从快速分离器的底部出口出。(5) The liquid phase separated by the fine filter and the filter press enters the rapid separator, and then passes through the centrifugal action of the multi-axis cyclone separator, the coalescence action of the corrugated plate and the inclined plate, and the two items of oil and water are initially obtained. Separation, the oil phase containing a small part of water exits from the top outlet of the rapid separator, and the water phase containing a small part of the oil exits from the bottom exit of the rapid separator.
(6)从快速分离器顶部出口出来的油相进入油脱水器，依次经过波纹板、改性亲疏水纤维模块、直流电场模块的聚结作用，油水两项实现分离，水相从油脱水器的底部出口出，进入后续工艺，油相从油脱水器的顶部出口出，进入后续工艺。(6) The oil phase from the top outlet of the quick separator enters the oil dehydrator, and passes through the coalescence of the corrugated plate, the modified hydrophilic and hydrophobic fiber module, and the DC electric field module in turn. The oil and water are separated, and the water phase is separated from the oil dehydrator. The oil phase exits from the bottom outlet of the oil dehydrator and enters the subsequent process, and the oil phase exits from the top outlet of the oil dehydrator and enters the subsequent process.
(7)从快速分离器底部出口出来的油相进入水除油器，依次经过紧凑气浮单元、波纹板、改性亲疏水纤维模块的聚结作用，油水两项实现分离，水相从水除油器的底部出口出，进入后续工艺，油相从水除油器的顶部出口出，进入整个流程的油相出口，同时通过一条支路与柴油罐入口相连。(7) The oil phase from the bottom outlet of the quick separator enters the water degreaser, and passes through the coalescence of the compact air flotation unit, the corrugated plate, and the modified hydrophilic and hydrophobic fiber module in turn. The oil and water are separated, and the water phase is separated from the water. The bottom outlet of the degreaser enters the subsequent process, and the oil phase exits from the top outlet of the water degreaser, enters the oil phase outlet of the whole process, and is connected to the diesel tank inlet through a branch.
进一步，步骤(1)中所述的稀油温度为20℃～90℃，其中油泥与稀油的质量流量比为2:1～1:10。Further, the temperature of the thin oil described in step (1) is 20°C to 90°C, and the mass flow ratio of the sludge to the thin oil is 2:1 to 1:10.
进一步，步骤(2)中所述的离心机液相出口的固体颗粒物浓度为0.1％～20％，大颗粒固体杂质的粒径为10um～1000um。Further, the concentration of solid particles at the liquid phase outlet of the centrifuge described in step (2) is 0.1% to 20%, and the particle size of large solid impurities is 10um to 1000um.
进一步，步骤(3)中所述的精细过滤器的液相出口的固体颗粒物浓度为0.1％以内，小颗粒固体杂质的粒径不大于10um。Further, the concentration of solid particles at the liquid phase outlet of the fine filter described in step (3) is within 0.1%, and the particle size of small particles of solid impurities is not greater than 10um.
进一步，步骤(4)中所述的压滤机液相出口的含固率为0.005％以内，固相出口的含油率为0.5％以内。Further, the solid content of the liquid phase outlet of the filter press described in step (4) is within 0.005%, and the oil content of the solid phase outlet is within 0.5%.
进一步，步骤(5)中所述的快速分离模块的压降为0.01～0.2MPa；流经快速分离器各模块的流速为0.005～0.025m/s；聚结长大后的油滴粒径为30～50um；顶部出口的油中水含量为0.5％～5％，底部出口的水中油含量为0.05％～1％。Further, the pressure drop of the rapid separation module described in step (5) is 0.01-0.2 MPa; the flow velocity flowing through each module of the rapid separation device is 0.005-0.025 m/s; the particle size of the oil droplets after coalescence is 30~50um; the water content in the oil at the top outlet is 0.5%~5%, and the oil content in the water at the bottom outlet is 0.05%~1%.
进一步，步骤(6)中所述的；油脱水器的压降为0.01～0.2MPa；电场形式为直流电场；流经油脱水器各模块的流速为0.005～0.025m/s；顶部出口的油中水含量为100mg/L以内。Further, as described in step (6); the pressure drop of the oil dehydrator is 0.01-0.2MPa; the electric field is in the form of a DC electric field; the flow velocity through each module of the oil dehydrator is 0.005-0.025m/s; the oil at the top outlet The water content is within 100mg/L.
进一步，步骤(7)中所述的水除油器的压降为0.01～0.2MPa；流经水除油器各模块的流速为0.005～0.025m/s；底部出口的水中油含量为50mg/L以内。Further, the pressure drop of the water degreaser described in step (7) is 0.01-0.2MPa; the flow velocity flowing through each module of the water degreaser is 0.005-0.025m/s; the oil content in the water at the bottom outlet is 50mg/s within L.
上述一种罐底油泥资源化回收油的方法中使用的装置，所述装置包括：柴油溶解萃取单元：柴油罐、径向管式洗涤器；固液分离单元：卧式离心机、精细过滤器、压滤机；油水分离单元：快速分离器、油脱水器、水除油器。The device used in the above-mentioned method for recycling oil from tank bottom sludge, the device includes: diesel oil dissolution and extraction unit: diesel tank, radial tubular scrubber; solid-liquid separation unit: horizontal centrifuge, fine filter , filter press; oil-water separation unit: quick separator, oil dehydrator, water degreaser.
其中，所述的柴油溶解萃取单元：柴油罐的出口与从罐区来的油泥输送管道在径向管式洗涤器的入口相汇，径向管式洗涤器的出口与卧式离心机的进口相连。Wherein, the diesel oil dissolution and extraction unit: the outlet of the diesel tank and the sludge conveying pipeline from the tank area converge at the inlet of the radial tubular scrubber, and the outlet of the radial tubular scrubber and the inlet of the horizontal centrifuge connected.
固液分离单元：卧式离心机的上部液相出口与精细过滤器的入口相连，卧式离心机的下部固相出口与精细过滤器的下部固相出口共同汇入压滤机入口，压滤机的固相出口与整个流程的固相出口相连，压滤机的液相出口与精细过滤器的液相出口共同汇入的快速分离器的进口。Solid-liquid separation unit: the upper liquid phase outlet of the horizontal centrifuge is connected to the inlet of the fine filter, and the lower solid phase outlet of the horizontal centrifuge and the lower solid phase outlet of the fine filter are merged into the inlet of the filter press, and the filter press The solid phase outlet of the machine is connected with the solid phase outlet of the whole process, and the liquid phase outlet of the filter press and the liquid phase outlet of the fine filter are combined into the inlet of the quick separator.
油水分离单元：快速分离器的上部油相出口与油脱水器的进口相连，快速分离器的下部水相出口与水除油器的入口相连；油脱水器的下部水相出口与水除油器的下部水相出口相连，共同汇入整个流程的水相出口；油脱水器的上部油相出口与水除油器的上部油相出口相连，共同汇入整个流程的油相出口，同时通过支路与柴油罐入口相连。Oil-water separation unit: the upper oil phase outlet of the quick separator is connected to the inlet of the oil dehydrator, the lower water phase outlet of the quick separator is connected to the inlet of the water degreaser; the lower water phase outlet of the oil dehydrator is connected to the water degreaser The lower water phase outlet of the oil dehydrator is connected to the water phase outlet of the whole process; the upper oil phase outlet of the oil dehydrator is connected to the upper oil phase outlet of the water degreaser, and together they merge into the oil phase outlet of the whole process. The road is connected to the diesel tank inlet.
进一步，所述的管式洗涤器分为螺旋单元与文丘里单元，具体组合方式为公开号为CN107457257A的中国专利。Further, the tubular scrubber is divided into a spiral unit and a Venturi unit, and the specific combination method is the Chinese Patent Publication No. CN107457257A.
进一步，所述精细过滤器的滤膜孔径为0.4um～9um；Further, the pore size of the filter membrane of the fine filter is 0.4um～9um;
进一步，所述的多轴式旋流分离器分为主旋流管与副漩流管，具体组合方式为公开号为CN107557058A的中国专利。Further, the multi-axial cyclone separator is divided into a main cyclone pipe and a secondary cyclone pipe, and the specific combination method is the Chinese Patent Publication No. CN107557058A.
进一步，所述快速分离器顶部、底部出口的直径为15～20mm；Further, the diameters of the top and bottom outlets of the rapid separator are 15-20 mm;
进一步，所述斜板单元斜板的角度为15°～60°。Further, the angle of the inclined plate of the inclined plate unit is 15°˜60°.
进一步，所述的纤维模快采用表面能不同的纤维混合编织，编织方法为中国专利ZL201410211201.6中的Ω型编织方法；Further, the fiber molds are mixed and weaved by fibers with different surface energies, and the weaving method is the Ω-type weaving method in Chinese Patent ZL201410211201.6;
进一步，所述直流电场模块的电极厚度为1cm～5cm；电压为0.5kV～5kV；Further, the electrode thickness of the DC electric field module is 1cm-5cm; the voltage is 0.5kV-5kV;
进一步，所述的紧凑气浮单元利用了旋流与气浮技术，具体装置为公开号为CN104773789A的中国专利经上述工艺处理后，油泥中98％的油得到回收，经过回炼，稀油在整个流程中可以循环使用，同时回收的油的品质也得到提升。Further, the compact air flotation unit utilizes swirl and air flotation technology, and the specific device is the Chinese patent with publication number CN104773789A. After the above-mentioned process treatment, 98% of the oil in the sludge is recovered. The whole process can be recycled, and the quality of the recovered oil is also improved.
与现有技术相比，本发明的优点在于：首先油泥回收油的效率高达98％，并且整个工艺流程只需加入稀油而且可以循环使用，运行成本低廉。同时工艺合理先进：先用稀油溶解萃取油泥中的油，再依次进行固相粗分、固相精分、油水粗分、油水深度分离。此工艺不仅效率高，而且成本低廉，同时运行稳定可靠，十分便于各类石化企业的现场流程改造。Compared with the prior art, the present invention has the advantages that: firstly, the efficiency of oil recovery from sludge is as high as 98%, and the whole process flow only needs to add thin oil and can be recycled, and the operation cost is low. At the same time, the process is reasonable and advanced: the oil in the sludge is first dissolved and extracted with thin oil, and then the solid phase coarse fractionation, solid phase fine fractionation, oil-water coarse fractionation, and oil-water depth separation are carried out in sequence. This process is not only efficient, but also low in cost, stable and reliable in operation, and very convenient for on-site process transformation of various petrochemical enterprises.
附图说明Description of drawings
图1是一种罐底油泥资源化回收油的工艺流程图。Fig. 1 is a kind of process flow chart of the recycling of oil from tank bottom sludge.
图2是另一种罐底油泥资源化回收油的工艺流程图，适用于相对更难分离的工况。Fig. 2 is another process flow diagram of oil recovery from tank bottom sludge, which is suitable for relatively difficult separation conditions.
图3是另一种罐底油泥资源化回收油的工艺流程图，适用于相对较容易分离的工况。Fig. 3 is another process flow diagram of oil recovery from tank bottom sludge, which is suitable for working conditions that are relatively easy to separate.
符号说明：Symbol Description:
1为柴油罐；2、2-1、2-2为径向管式洗涤器；3、3-2、3-3为离心机；4为精细过滤器；5为压滤机；6为快速分离器；7为油脱水器；8为水除油器；9为破乳剂罐。1 is diesel tank; 2, 2-1, 2-2 are radial tube scrubbers; 3, 3-2, 3-3 are centrifuges; 4 is fine filter; 5 is filter press; 6 is fast Separator; 7 is an oil dehydrator; 8 is a water degreaser; 9 is a demulsifier tank.
具体实施方法Specific implementation method
下面，通过实施例对本发明进行具体描述。有必要在此指出的是，以下实施例只用于对本发明作进一步说明，不能理解为对本发明保护范围的限制，该领域的专业技术人员根据本发明的内容作出的一些非本质的改进和调整，仍属于本发明的保护范围。Hereinafter, the present invention will be described in detail by way of examples. It is necessary to point out here that the following examples are only used to further illustrate the present invention, and should not be construed as limiting the scope of protection of the present invention. Some non-essential improvements and adjustments made by those skilled in the field according to the content of the present invention , still belong to the protection scope of the present invention.
实施例1Example 1
本申请的发明人经过广泛而深入的研究后发现，对于罐底油泥资源化回收应采用一种新型经济的工艺方法及装置。本发明所提供的罐底油泥中油、泥、水三相分离以及油泥中油的高效回收方法可以高效地回收油泥中的油资源，同时实现了油泥的无害化处理。与其他处理技术相比，该技术具有油的回收率高、维护成本低、运行稳定可靠、适应性强、二次污染小等优点。After extensive and in-depth research, the inventor of the present application found that a new and economical process method and device should be adopted for the resource recovery of tank bottom sludge. The three-phase separation of oil, mud and water in the tank bottom sludge and the efficient recovery method of the oil in the sludge provided by the invention can efficiently recover the oil resources in the sludge, and simultaneously realize the harmless treatment of the sludge. Compared with other treatment technologies, this technology has the advantages of high oil recovery rate, low maintenance cost, stable and reliable operation, strong adaptability, and low secondary pollution.
一种罐底油泥资源化回收油的方法中使用的装置，包括：柴油溶解萃取单元：柴油罐、径向管式洗涤器；固液分离单元：卧式离心机、精细过滤器、压滤机；油水分离单元：快速分离器、油脱水器、水除油器。A device used in a method for recycling oil from tank bottom sludge, comprising: diesel oil dissolution and extraction unit: diesel tank, radial tubular scrubber; solid-liquid separation unit: horizontal centrifuge, fine filter, filter press ; Oil-water separation unit: quick separator, oil dehydrator, water degreaser.
其中，所述的柴油溶解萃取单元：柴油罐的出口与从罐区来的油泥输送管道在径向管式洗涤器的入口相汇，径向管式洗涤器的出口与卧式离心机的进口相连。Wherein, the diesel oil dissolution and extraction unit: the outlet of the diesel tank and the sludge conveying pipeline from the tank area converge at the inlet of the radial tubular scrubber, and the outlet of the radial tubular scrubber and the inlet of the horizontal centrifuge connected.
固液分离单元：卧式离心机的上部液相出口与精细过滤器的入口相连，卧式离心机的下部固相出口与精细过滤器的下部固相出口共同汇入压滤机入口，压滤机的固相出口与整个流程的固相出口相连，压滤机的液相出口与精细过滤器的液相出口共同汇入的快速分离器的进口。Solid-liquid separation unit: the upper liquid phase outlet of the horizontal centrifuge is connected to the inlet of the fine filter, and the lower solid phase outlet of the horizontal centrifuge and the lower solid phase outlet of the fine filter are merged into the inlet of the filter press, and the filter press The solid phase outlet of the machine is connected with the solid phase outlet of the whole process, and the liquid phase outlet of the filter press and the liquid phase outlet of the fine filter are combined into the inlet of the quick separator.
油水分离单元：快速分离器的上部油相出口与油脱水器的进口相连，快速分离器的下部水相出口与水除油器的入口相连；油脱水器的下部水相出口与水除油器的下部水相出口相连，共同汇入整个流程的水相出口；油脱水器的上部油相出口与水除油器的上部油相出口相连，共同汇入整个流程的油相出口，同时通过支路与柴油罐入口相连。Oil-water separation unit: the upper oil phase outlet of the quick separator is connected to the inlet of the oil dehydrator, the lower water phase outlet of the quick separator is connected to the inlet of the water degreaser; the lower water phase outlet of the oil dehydrator is connected to the water degreaser The lower water phase outlet of the oil dehydrator is connected to the water phase outlet of the whole process; the upper oil phase outlet of the oil dehydrator is connected to the upper oil phase outlet of the water degreaser, and together they merge into the oil phase outlet of the whole process. The road is connected to the diesel tank inlet.
所述的管式洗涤器分为螺旋单元与文丘里单元，具体组合方式为公开号为CN107457257A的中国专利。The tubular scrubber is divided into a spiral unit and a Venturi unit, and the specific combination method is the Chinese Patent Publication No. CN107457257A.
所述精细过滤器的滤膜孔径为0.4um～9um；The filter membrane aperture of the fine filter is 0.4um～9um;
所述的多轴式旋流分离器分为主旋流管与副漩流管，具体组合方式为公开号为CN107557058A的中国专利。The multi-axial cyclone separator is divided into a main cyclone pipe and a secondary cyclone pipe, and the specific combination method is the Chinese Patent Publication No. CN107557058A.
所述快速分离器顶部、底部出口的直径为15～20mm；The diameters of the top and bottom outlets of the quick separator are 15-20 mm;
所述斜板单元斜板的角度为15°～60°。The angle of the inclined plate of the inclined plate unit is 15°˜60°.
所述的纤维模快采用表面能不同的纤维混合编织，编织方法为中国专利ZL201410211201.6中的Ω型编织方法；The fiber molds are mixed and weaved by fibers with different surface energies, and the weaving method is the Ω-type weaving method in the Chinese patent ZL201410211201.6;
所述直流电场模块的电极厚度为1cm～5cm；电压为0.5kV～5kV；The electrode thickness of the DC electric field module is 1cm-5cm; the voltage is 0.5kV-5kV;
所述的紧凑气浮单元利用了旋流与气浮技术，具体装置为公开号为CN104773789A的中国专利经上述工艺处理后，油泥中98％的油得到回收，经过回炼，稀油在整个流程中可以循环使用，同时回收的油的品质也得到提升。The compact air flotation unit utilizes swirl and air flotation technology, and the specific device is the Chinese patent with the publication number of CN104773789A. After the above-mentioned process, 98% of the oil in the sludge is recovered. The oil can be recycled and the quality of the recovered oil is also improved.
本发明的实施例1工艺流程示意图，如图1所示，1为柴油罐；2为径向管式洗涤器；3为离心机；4为精细过滤器；5为压滤机；6为快速分离器；7为油脱水器；8为水除油器。图2是另一种罐底油泥资源化回收油的工艺流程图，适用于相对更难分离的工况。图3是另一种罐底油泥资源化回收油的工艺流程图，适用于相对较容易分离的工况。Schematic diagram of the process flow of Example 1 of the present invention, as shown in Figure 1, 1 is a diesel tank; 2 is a radial tubular scrubber; 3 is a centrifuge; 4 is a fine filter; 5 is a filter press; Separator; 7 is an oil dehydrator; 8 is a water degreaser. Fig. 2 is another process flow diagram of oil recovery from tank bottom sludge, which is suitable for relatively difficult separation conditions. Fig. 3 is another process flow diagram of oil recovery from tank bottom sludge, which is suitable for working conditions that are relatively easy to separate.
某石化厂有100吨罐底油泥，需要进行回收其中的油，同时进行无害化处理，其油泥中含有很多的驱油剂与采出剂，呈胶质状，使用常规的分离方法无法进行分离。采用本发明中的工艺，达到了良好的效果。首先，含水、泥、油的原料油泥与稀油罐来的柴油在径向管式洗涤器中充分混合均匀，同时油泥中的油被溶解萃取到稀油中。经稀油溶解萃取后的油泥在离心机中进行固液两相的初步分离，实现大颗粒固体杂质的分离，进入压滤机。从离心机中分离出的液相经过精细过滤器，通过控制滤膜孔径，实现小颗粒固体杂质的分离，进入压滤机。从离心机和精细过滤器分离出的固相杂质经过压滤机，固相杂质中残余的液相被压出进入快速分离器的入口，固相杂质被压成块状进入到整个流程的固相出口，固液两相得到完全分离。经精细过滤器和压滤机分离出的液相进入快速分离器中，依次经过旋流器的离心作用、波纹板以及斜板的聚结作用，油水两项得到初步分离，含有少部分水的油相从快速分离器的顶部出口出，含有少部分油的水相从快速分离器的底部出口出。从快速分离器顶部出口出来的油相进入油脱水器，依次经过波纹板、改性亲疏水纤维模块、直流电场模块的聚结作用，油水两项实现分离，水相从油脱水器的底部出口出，进入后续工艺，油相从油脱水器的顶部出口出，进入后续工艺。从快速分离器底部出口出来的油相进入水除油器，依次经过波纹板、改性亲疏水纤维模块和的聚结作用，油水两项实现分离，水相从水除油器的底部出口出，进入后续工艺，油相从水除油器的顶部出口出，进入整个流程的油相出口，进行回收，同时通过一条支路返回一部分到柴油罐，实现柴油循环。A petrochemical plant has 100 tons of tank bottom sludge, which needs to be recovered and treated harmlessly at the same time. The sludge contains a lot of oil displacement agents and extraction agents, which are colloidal and cannot be separated by conventional separation methods. separation. By adopting the process of the present invention, good effects are achieved. First, the raw sludge containing water, mud and oil and the diesel oil from the thin oil tank are fully mixed in the radial tube scrubber, and the oil in the sludge is dissolved and extracted into the thin oil. The oily sludge after dilute oil dissolution and extraction is preliminarily separated into solid-liquid two-phase in the centrifuge to realize the separation of large-particle solid impurities, and then enters the filter press. The liquid phase separated from the centrifuge passes through a fine filter, and by controlling the pore size of the filter membrane, the separation of small particles of solid impurities is realized, and then enters the filter press. The solid-phase impurities separated from the centrifuge and the fine filter pass through the filter press, and the residual liquid phase in the solid-phase impurities is pressed out into the inlet of the rapid separator, and the solid-phase impurities are pressed into blocks and enter the solid phase of the whole process. At the phase outlet, the solid-liquid two phases are completely separated. The liquid phase separated by the fine filter and the filter press enters the rapid separator, and passes through the centrifugal action of the cyclone, the coalescence of the corrugated plate and the inclined plate in turn, and the oil and water are preliminarily separated. The oil phase exits from the top outlet of the quick separator, and the water phase containing a small amount of oil exits from the bottom outlet of the quick separator. The oil phase from the top outlet of the quick separator enters the oil dehydrator, and passes through the coalescence of the corrugated plate, the modified hydrophilic and hydrophobic fiber module, and the DC electric field module in turn. The oil and water are separated, and the water phase exits from the bottom of the oil dehydrator. The oil phase exits from the top outlet of the oil dehydrator and enters the subsequent process. The oil phase from the bottom outlet of the quick separator enters the water degreaser, and passes through the corrugated plate, the modified hydrophilic and hydrophobic fiber module and the coalescence in turn. The oil and water are separated, and the water phase exits from the bottom outlet of the water degreaser. , into the subsequent process, the oil phase exits from the top outlet of the water degreaser, enters the oil phase outlet of the whole process, and is recovered, and at the same time returns a part to the diesel tank through a branch to realize the diesel cycle.
Claims (13)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811156575.7A CN109179930B (en) | 2018-09-30 | 2018-09-30 | A method for three-phase separation of oil, mud and water in tank bottom sludge and efficient recovery of oil in sludge |
| PCT/CN2019/109327 WO2020064001A1 (en) | 2018-09-30 | 2019-09-30 | Method for separating oil, mud and water phases from tank bottom oily sludge and efficiently recovering oil from oily sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811156575.7A CN109179930B (en) | 2018-09-30 | 2018-09-30 | A method for three-phase separation of oil, mud and water in tank bottom sludge and efficient recovery of oil in sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109179930A CN109179930A (en) | 2019-01-11 |
| CN109179930B true CN109179930B (en) | 2020-12-01 |
Family
ID=64946618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811156575.7A Active CN109179930B (en) | 2018-09-30 | 2018-09-30 | A method for three-phase separation of oil, mud and water in tank bottom sludge and efficient recovery of oil in sludge |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109179930B (en) |
| WO (1) | WO2020064001A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109652115A (en) * | 2019-02-21 | 2019-04-19 | 华东理工大学 | A kind of preprocess method of Hydrogenation raw oil desalination coupling dehydration |
| CN110078160B (en) * | 2019-04-03 | 2021-10-12 | 华东理工大学 | Method and device for removing oil by combining hydrophilic and hydrophobic particles produced in offshore oil field |
| CN116040893A (en) * | 2021-10-28 | 2023-05-02 | 中国石油化工股份有限公司 | A method and system for treating sludge |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01275692A (en) * | 1988-04-27 | 1989-11-06 | Mitsubishi Kakoki Kaisha Ltd | Method of treating waste engine oil |
| CN203382621U (en) * | 2013-07-15 | 2014-01-08 | 北京纬纶华业环保科技股份有限公司 | Resourceful treatment system of oily sludge |
| CN203763912U (en) * | 2014-03-31 | 2014-08-13 | 华东理工大学 | Three-phase separation device |
| CN105199770A (en) * | 2015-10-27 | 2015-12-30 | 华东理工大学 | Movable washing method and apparatus for combined oil-sand |
| CN105925298A (en) * | 2016-05-09 | 2016-09-07 | 天津海威欧能源科技有限责任公司 | Continuous separating and recycling method and system for oil sand ore containing rich carbonate |
| CN106566573A (en) * | 2016-11-10 | 2017-04-19 | 常州大学 | Oil sand separation technology |
| CN106957136A (en) * | 2017-03-02 | 2017-07-18 | 安徽省通源环境节能股份有限公司 | A kind of processing method of oily sludge |
| CN206538328U (en) * | 2017-03-17 | 2017-10-03 | 张云亮 | Mobile oil-bearing sludge treatment equipment |
| CN107793003A (en) * | 2017-11-29 | 2018-03-13 | 陕西欧菲德环保科技有限公司 | A kind of tank bottom oil sludge apparatus for continuous treatment and processing method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4004439B2 (en) * | 2003-07-07 | 2007-11-07 | 株式会社奥村組 | Discharge soil treatment method |
| CN100486665C (en) * | 2007-04-23 | 2009-05-13 | 辽河石油勘探局 | Oil soil treatment technique for tank cleaning |
| CN103396830B (en) * | 2013-08-14 | 2015-05-20 | 中国石油大学(华东) | Device and method for dehydrating heavy sump oil |
| CN103626366B (en) * | 2013-12-19 | 2015-04-29 | 中国石油大学(华东) | Treatment method for recycling oil-field oily sludge |
| CN110759566B (en) * | 2017-08-04 | 2022-11-11 | 华东理工大学 | Production water treatment method for offshore gas field platform |
-
2018
- 2018-09-30 CN CN201811156575.7A patent/CN109179930B/en active Active
-
2019
- 2019-09-30 WO PCT/CN2019/109327 patent/WO2020064001A1/en active Application Filing
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01275692A (en) * | 1988-04-27 | 1989-11-06 | Mitsubishi Kakoki Kaisha Ltd | Method of treating waste engine oil |
| CN203382621U (en) * | 2013-07-15 | 2014-01-08 | 北京纬纶华业环保科技股份有限公司 | Resourceful treatment system of oily sludge |
| CN203763912U (en) * | 2014-03-31 | 2014-08-13 | 华东理工大学 | Three-phase separation device |
| CN105199770A (en) * | 2015-10-27 | 2015-12-30 | 华东理工大学 | Movable washing method and apparatus for combined oil-sand |
| CN105925298A (en) * | 2016-05-09 | 2016-09-07 | 天津海威欧能源科技有限责任公司 | Continuous separating and recycling method and system for oil sand ore containing rich carbonate |
| CN106566573A (en) * | 2016-11-10 | 2017-04-19 | 常州大学 | Oil sand separation technology |
| CN106957136A (en) * | 2017-03-02 | 2017-07-18 | 安徽省通源环境节能股份有限公司 | A kind of processing method of oily sludge |
| CN206538328U (en) * | 2017-03-17 | 2017-10-03 | 张云亮 | Mobile oil-bearing sludge treatment equipment |
| CN107793003A (en) * | 2017-11-29 | 2018-03-13 | 陕西欧菲德环保科技有限公司 | A kind of tank bottom oil sludge apparatus for continuous treatment and processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020064001A1 (en) | 2020-04-02 |
| CN109179930A (en) | 2019-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104673367B (en) | Step-by-step oil-water mixture separation method coupled with oil gas washing | |
| CN109179930B (en) | A method for three-phase separation of oil, mud and water in tank bottom sludge and efficient recovery of oil in sludge | |
| CN102391185B (en) | Ionic liquid for assisting oil-sand separation and separation method | |
| CN113121076B (en) | Oil sludge sand treatment method | |
| CN101670199A (en) | Capturing settling agent and method for removing catalyst solid powder in oil slurry | |
| CN105316018A (en) | Pretreatment method for deep processing of coal tar | |
| CN104944619B (en) | Electric Desalting Wastewater deoiling method in heavy crude process | |
| CN105498280B (en) | A kind of method of the reversible solvent assisting oil-sand separation of hydrophily | |
| CN101792224B (en) | Method and device for processing emptied water of delayed coking | |
| CN106318442A (en) | Sump oil purifying device and method | |
| CN108624347A (en) | The synchronous recycling of oil product and purification method in a kind of oily sludge | |
| CN109437499B (en) | A kind of processing method and device for cleaning dirty oil | |
| CN104291542A (en) | Equipment and method for clearing away and recovering sludge at bottom of crude oil storage tank | |
| CN101302438A (en) | Alkali removal method and device for acid-soluble oil containing alkaline impurities | |
| CN102847343A (en) | Heavy polluted oil processing device and method thereof | |
| CN107177367A (en) | Oil-sand cavitation process technique | |
| CN104944496A (en) | Phenol removing method for sodium sulfate waste water of coal tar processing | |
| CN110590088A (en) | Skid-mounted oil-containing sludge continuous treatment system and treatment method | |
| CA2864021C (en) | Separating a bitumen extract from solids | |
| CN113233725A (en) | Device and method for flotation and extraction coupling treatment of oily sludge | |
| CN209226803U (en) | A kind of resource reclaim processing system that oil sludge is innoxious | |
| CN102432114B (en) | Multi-stage concentration method and device for oil sludge in manifold section of oil shale dry distillation system | |
| CN105884069A (en) | Recycling method and system for increasing oil content in oily sludge waste water | |
| CN102218232B (en) | Oil-water separation method | |
| CN107879570B (en) | Method and device for treating aged oil sludge of super-heavy oil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |