CN114702977B - Method for treating difficult-to-treat oil sludge in petrochemical enterprise electric desalting tank - Google Patents
Method for treating difficult-to-treat oil sludge in petrochemical enterprise electric desalting tank Download PDFInfo
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- 239000010802 sludge Substances 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000011033 desalting Methods 0.000 title claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 238000003756 stirring Methods 0.000 claims abstract description 28
- 239000003599 detergent Substances 0.000 claims abstract description 23
- 150000001875 compounds Chemical class 0.000 claims abstract description 20
- -1 isopropanol amide Chemical class 0.000 claims abstract description 19
- KFZMGEQAYNKOFK-UHFFFAOYSA-N isopropyl alcohol Natural products CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims abstract description 19
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 11
- 238000010438 heat treatment Methods 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 8
- TVACALAUIQMRDF-UHFFFAOYSA-N dodecyl dihydrogen phosphate Chemical compound CCCCCCCCCCCCOP(O)(O)=O TVACALAUIQMRDF-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000004062 sedimentation Methods 0.000 claims abstract description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 16
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 16
- 239000010452 phosphate Substances 0.000 claims description 16
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims description 5
- 239000003921 oil Substances 0.000 abstract description 66
- 238000000926 separation method Methods 0.000 abstract description 9
- OOCCDEMITAIZTP-QPJJXVBHSA-N (E)-cinnamyl alcohol Chemical compound OC\C=C\C1=CC=CC=C1 OOCCDEMITAIZTP-QPJJXVBHSA-N 0.000 description 8
- 239000002245 particle Substances 0.000 description 6
- 239000010779 crude oil Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 239000000839 emulsion Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- OOCCDEMITAIZTP-UHFFFAOYSA-N allylic benzylic alcohol Natural products OCC=CC1=CC=CC=C1 OOCCDEMITAIZTP-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000002920 hazardous waste Substances 0.000 description 4
- 239000011499 joint compound Substances 0.000 description 3
- 238000005191 phase separation Methods 0.000 description 3
- IRHPFYDSCBYHOX-UHFFFAOYSA-N 3-phenylprop-2-enyl dihydrogen phosphate Chemical compound OP(O)(=O)OCC=CC1=CC=CC=C1 IRHPFYDSCBYHOX-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 238000003795 desorption Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- XUWVIABDWDTJRZ-UHFFFAOYSA-N propan-2-ylazanide Chemical compound CC(C)[NH-] XUWVIABDWDTJRZ-UHFFFAOYSA-N 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012459 cleaning agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
Classifications
-
- 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
Abstract
The invention discloses a method for treating difficult-to-treat oil sludge in an electric desalting tank of a petrochemical enterprise, which comprises the following steps: s01, mixing and stirring the oil sludge, the demulsifier and the water, and heating to a certain temperature; s02, adding a compound detergent into the solution, wherein the compound detergent comprises lauryl phosphate and isopropanol amide, and continuously stirring for a period of time; s03, adding polyaluminium chloride into the solution, stirring normally for a period of time, and separating by a centrifuge; s04, stopping centrifuging, and standing for sedimentation. The method for treating the oil sludge difficult to treat in the electric desalting tank of the petrochemical enterprise can effectively promote the separation of water combined with the oil sludge and realize the separation of oil, water and sludge.
Description
Technical Field
The invention relates to a method for treating oil sludge difficult to treat in an electric desalting tank of a petrochemical enterprise, and belongs to the technical field of oil sludge treatment.
Background
The fatlute is a brown viscous emulsion with a certain peculiar smell. Is generally composed of oil-in-water, water-in-oil, suspended solid impurities and petrochemical residual medicaments, and is an extremely stable suspended emulsion. The current method for treating the oil sludge mainly comprises the following steps: pyrolysis/thermal desorption, incineration, biological treatment, solvent extraction, water phase tempering-ultrasonic cavitation-centrifugation, and the like. However, the pyrolysis/thermal desorption method and the solvent extraction method have high cost, the biological treatment method has long treatment period and incomplete treatment, the incineration method can not recycle oil products, the water phase tempering-ultrasonic cavitation-centrifugal method has poor three-phase separation effect, and the solid water content after dehydration is high.
In the refining process of crude oil, the first step is to enter an electric desalting tank to remove salt in the crude oil, and a large amount of viscous sludge is produced in the process. The oil sludge is different from the common tank bottom oil sludge, contains more heavy oil and has high viscosity. Mainly, in recent years, with the increasingly worsened properties of crude oil and the increasing of crude oil types, the salt content, density, viscosity and the like of crude oil are continuously increased, and great influence and examination are brought to electric desalting operation, and the electric desalting back flushing system of some refining enterprises cannot well remove the sludge, so that a large amount of viscous sludge which is difficult to treat is generated. At present, enterprises mainly adopt hazardous waste disposal except for the oil sludge, oil cannot be recovered, and the hazardous waste disposal is high in price.
The reason for the difficult dehydration of the difficult-to-treat sludge is mainly as follows: (1) good stability and difficult evaporation of water. Since sludge is generally composed of oil-in-water, water-in-oil emulsions, where water and oil form very stable hydrates. (hydrate: a complex formed by combining water in the form of water molecules with molecules of a substance) (2) good dispersibility and less tendency to water compression. Because the oily sludge particles are generally charged, the particles are mutually exclusive, and the dispersibility of the oily sludge particles is good.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a method for treating the oil sludge which is difficult to treat in the electric desalting tank of petrochemical enterprises, which can effectively promote the separation of water combined with the oil sludge and realize the separation of oil, water and sludge.
In order to solve the technical problems, the invention adopts the following technical scheme:
a method for treating difficult-to-treat oil sludge in an electric desalting tank of a petrochemical enterprise comprises the following steps:
s01, mixing and stirring the oil sludge, the demulsifier and the water, and heating to a certain temperature;
s02, adding a compound detergent into the solution, wherein the compound detergent comprises lauryl phosphate and isopropanol amide, and continuously stirring for a period of time;
s03, adding polyaluminium chloride into the solution, stirring normally for a period of time, and separating by a centrifuge;
s04, stopping centrifuging, and standing for sedimentation.
In S01, according to the volume ratio, the oil sludge is prepared by: demulsifier: water=125:1 to 2:300, and the heating temperature is 50 to 70 ℃.
The demulsifier model was SP169.
In S02, the volume ratio of the compound detergent to the oil sludge is 50-70:1.
In S02, the volume ratio of the cinnamyl alcohol phosphate to the isopropanol amide is as follows: lauryl alcohol phosphate: isopropanol amide: water=1:1:8.
In S02, stirring is continued for 10 to 20 minutes.
In S03, the mass ratio of the polyaluminum chloride to the oil sludge is 1: 120-180.
In S03, the stirring time was 10 minutes, and the rotational speed of the centrifuge was 3000 rpm.
The invention has the beneficial effects that: the method for treating the difficult-to-treat oil sludge in the electric desalting tank of the petrochemical enterprise provided by the invention can relatively rapidly treat the difficult-to-treat oil sludge, does not need an organic solvent, saves cost, adopts a compound detergent to wash the demulsified oil sludge, and the compound detergent comprises lauryl phosphate and isopropanol amide, wherein the lauryl phosphate is a nonionic surfactant, has good hydrophilicity, detergency and conductivity, is a good cleaning agent, and the isopropanol amide is easy to dissolve in water, has good permeability and strong dirt particle dispersibility. Because the laurinol phosphate has good hydrophilicity, after the laurinol phosphate is compounded, the super-strong decontamination performance is combined with the strong permeability and the dispersibility of the isopropanol amide to generate a synergistic effect, and the laurinol phosphate is very suitable for treating complex mixtures with complex components, liquid-solid mixing and better combination of water molecules and mixed particles in the oil sludge. The emulsion breaking effect can be promoted after the emulsion breaking of the two components is carried out at 50-70 ℃, the separation of water molecules and oil dirt particles is promoted, the viscosity of the oil sludge is reduced, and the particulate matters are subjected to powerful degreasing cleaning, so that conditions are created for the subsequent three-phase separation of oil, water and sludge.
Drawings
FIG. 1 is an initial sludge plot of the present invention;
FIG. 2 is a three-phase separation diagram of oil and water sludge treated by the method of the invention;
FIG. 3 is a top oil chart obtained by the treatment of the method of the present invention;
FIG. 4 is a bottom mud image obtained by the treatment of the method of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, and the following examples are only for more clearly illustrating the technical aspects of the present invention, and are not to be construed as limiting the scope of the present invention.
Example 1
The invention discloses a method for treating difficult-to-treat oil sludge in an electric desalting tank of a petrochemical enterprise, which comprises the following steps:
step one, mixing and stirring the oil sludge, the demulsifier and the water, and heating to a certain temperature. According to the volume ratio, the oil sludge is prepared from the following components: demulsifier: water = 125:1:300, heating temperature was 70 ℃. The demulsifier model was SP169.
And step two, adding a compound detergent into the solution, wherein the compound detergent comprises laurinol phosphate and isopropanol amide, and continuously stirring for a period of time. The volume ratio of the compound detergent to the oil sludge is 50:1. The volume ratio of the cinnamyl alcohol phosphate to the isopropanol amide is as follows: lauryl alcohol phosphate: isopropanol amide: water=1:1:8. Stirring was continued for 20 minutes.
And thirdly, adding polyaluminium chloride into the solution, stirring for a period of time normally, and separating by a centrifuge. The mass ratio of the polyaluminum chloride to the oil sludge is 1:120. the stirring time was 10 minutes and the centrifuge speed was 3000 rpm.
And fourthly, stopping centrifuging, standing and settling to realize the separation of oil, water and mud.
Example 2
The invention discloses a method for treating difficult-to-treat oil sludge in an electric desalting tank of a petrochemical enterprise, which comprises the following steps:
step one, mixing and stirring the oil sludge, the demulsifier and the water, and heating to a certain temperature. According to the volume ratio, the oil sludge is prepared from the following components: demulsifier: water = 125:2:300, heating temperature was 50 ℃. The demulsifier model was SP169.
And step two, adding a compound detergent into the solution, wherein the compound detergent comprises laurinol phosphate and isopropanol amide, and continuously stirring for a period of time. The volume ratio of the compound detergent to the oil sludge is 70:1. The volume ratio of the cinnamyl alcohol phosphate to the isopropanol amide is as follows: lauryl alcohol phosphate: isopropanol amide: water=1:1:8. Stirring was continued for 10 minutes.
And thirdly, adding polyaluminium chloride into the solution, stirring for a period of time normally, and separating by a centrifuge. The mass ratio of the polyaluminum chloride to the oil sludge is 1:180. the stirring time was 10 minutes and the centrifuge speed was 3000 rpm.
And fourthly, stopping centrifuging, standing and settling to realize the separation of oil, water and mud.
Example 3
The invention discloses a method for treating difficult-to-treat oil sludge in an electric desalting tank of a petrochemical enterprise, which comprises the following steps:
step one, mixing and stirring the oil sludge, the demulsifier and the water, and heating to a certain temperature. According to the volume ratio, the oil sludge is prepared from the following components: demulsifier: water = 125:1.5:300, heating temperature 60 ℃. The demulsifier model was SP169.
And step two, adding a compound detergent into the solution, wherein the compound detergent comprises laurinol phosphate and isopropanol amide, and continuously stirring for a period of time. The volume ratio of the compound detergent to the oil sludge is 60:1. The volume ratio of the cinnamyl alcohol phosphate to the isopropanol amide is as follows: lauryl alcohol phosphate: isopropanol amide: water=1:1:8. Stirring was continued for 15 minutes.
And thirdly, adding polyaluminium chloride into the solution, stirring for a period of time normally, and separating by a centrifuge. The mass ratio of the polyaluminum chloride to the oil sludge is 1:150. the stirring time was 10 minutes and the centrifuge speed was 3000 rpm.
And fourthly, stopping centrifuging, standing and settling to realize the separation of oil, water and mud.
Comparative example 1
This example is identical to example 3, except that the built detergent is replaced with a separate cinnamyl phosphate, the volumetric ratio of cinnamyl phosphate to water being 2:8.
Comparative example 2
This example is identical to the specific example 3, except that the built detergent is replaced by an individual isopropylamide, the volume ratio of isopropylamide to water being 2:8.
The methods of specific example 3, comparative example 1 and comparative example 2 were used to treat the sludge of an electric desalting tank of a petrochemical enterprise, the photographs before the treatment of the sludge of the electric desalting tank are shown in FIG. 1, the characteristics of the sludge of the electric desalting tank are shown in Table 1, and the effects after the treatment are shown in Table 2.
TABLE 1 electric desalting tank sludge characteristics of petrochemical enterprises
| Moisture content (%) | Oil content (%) | Solid content (%) | pH | |
| Electric desalting tank sludge | 40.8 | 53.9 | 5.3 | 7.1 |
TABLE 2 comparison of different detergents after treatment
As can be seen from Table 2, the water content of the upper layer oil of the treated sludge is 1.5%, the solid content is 1.2%, the water content of the lower layer sludge of the treated sludge is 75.3%, the oil content is 4.8%, and the oil content in the dehydrated water is only 292mg/L, which indicates that the oil, water and sludge are well separated, and specific effect figures are shown in figures 2 to 4. In addition, as can be seen from table 2, the compound detergent has better treatment effect on the sludge compared with the single laurinol phosphate or isopropanol amide.
The method for treating the oil sludge difficult to treat in the electric desalting tank of the petrochemical enterprise can effectively promote the separation of water combined with the oil sludge, reduce the point charge of the oil sludge, and simultaneously recover the oil, wherein the oil sludge decrement (the calculation mode of the oil sludge decrement is (initial oil sludge amount-residual sludge cake)/initial oil sludge amount) reaches more than 80 percent. The treated oil can be recycled, water enters a sewage treatment plant for treatment, mud can be used as hazardous waste for treatment, the purpose of mass reduction is achieved, and economy is saved for subsequent hazardous waste treatment.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (5)
1. A method for treating oil sludge difficult to treat in an electric desalting tank of a petrochemical enterprise is characterized by comprising the following steps: the method comprises the following steps:
s01, mixing and stirring the oil sludge, the demulsifier and the water, heating to a certain temperature, and mixing the oil sludge according to the volume ratio: demulsifier: water=125:1-2:300, heating temperature is 50-70 ℃;
s02, adding a compound detergent into the solution, wherein the volume ratio of the compound detergent to the oil sludge is 50-70:1, and the compound detergent comprises lauryl phosphate, isopropanol amide and water, and the volume ratio is as follows: lauryl alcohol phosphate: isopropanol amide: water = 1:1:8, stirring continued for a period of time;
s03, adding polyaluminium chloride into the solution, stirring normally for a period of time, and separating by a centrifuge;
s04, stopping centrifuging, and standing for sedimentation.
2. The method for treating refractory sludge in an electrical desalting tank of a petrochemical enterprise according to claim 1, wherein the method comprises the following steps: the demulsifier model was SP169.
3. The method for treating refractory sludge in an electrical desalting tank of a petrochemical enterprise according to claim 1, wherein the method comprises the following steps: in S02, stirring is continued for 10 to 20 minutes.
4. The method for treating refractory sludge in an electrical desalting tank of a petrochemical enterprise according to claim 1, wherein the method comprises the following steps: in S03, the mass ratio of the polyaluminum chloride to the oil sludge is 1: 120-180.
5. The method for treating refractory sludge in an electrical desalting tank of a petrochemical enterprise according to claim 1, wherein the method comprises the following steps: in S03, the stirring time was 10 minutes, and the rotational speed of the centrifuge was 3000 rpm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210312124.8A CN114702977B (en) | 2022-03-28 | 2022-03-28 | Method for treating difficult-to-treat oil sludge in petrochemical enterprise electric desalting tank |
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| CN202210312124.8A CN114702977B (en) | 2022-03-28 | 2022-03-28 | Method for treating difficult-to-treat oil sludge in petrochemical enterprise electric desalting tank |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102627381A (en) * | 2012-04-26 | 2012-08-08 | 陕西科技大学 | Two-step method resource treatment process for sludge containing oil |
| RU2013112458A (en) * | 2013-03-19 | 2014-09-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Уфимский государственный нефтяной технический университет" | OIL SLUDGE TREATMENT METHOD |
| CN104411377A (en) * | 2012-04-20 | 2015-03-11 | Bci生化有限公司 | Oil recovery from oil sludge with nanoemulsion surfactant |
| CN104556594A (en) * | 2013-10-22 | 2015-04-29 | 中国石油化工股份有限公司 | Low-temperature oily sludge demulsifier and preparation method thereof |
| CN108314290A (en) * | 2018-02-09 | 2018-07-24 | 江苏大洋环保工程有限公司 | A kind of processing method of oily sludge |
| CN108423964A (en) * | 2018-03-26 | 2018-08-21 | 甘肃新鑫能源工程有限公司 | A kind of tank bottom oil sludge minimizing treatment process |
| CN110054393A (en) * | 2019-04-12 | 2019-07-26 | 天津大学 | A kind of processing method of oily sludge |
| CN110358640A (en) * | 2019-08-07 | 2019-10-22 | 郑州中原利达新材料有限公司 | A kind of high-speed rail insulator cleaning protective agent |
| CN111960625A (en) * | 2020-08-19 | 2020-11-20 | 中国特种设备检测研究院 | Oil sludge demulsifier and preparation method thereof |
| CN113415919A (en) * | 2021-06-29 | 2021-09-21 | 湛江远通高新技术有限公司 | Purification treatment method for cleaning emulsified sump oil in crude oil tank |
-
2022
- 2022-03-28 CN CN202210312124.8A patent/CN114702977B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104411377A (en) * | 2012-04-20 | 2015-03-11 | Bci生化有限公司 | Oil recovery from oil sludge with nanoemulsion surfactant |
| CN102627381A (en) * | 2012-04-26 | 2012-08-08 | 陕西科技大学 | Two-step method resource treatment process for sludge containing oil |
| RU2013112458A (en) * | 2013-03-19 | 2014-09-27 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Уфимский государственный нефтяной технический университет" | OIL SLUDGE TREATMENT METHOD |
| CN104556594A (en) * | 2013-10-22 | 2015-04-29 | 中国石油化工股份有限公司 | Low-temperature oily sludge demulsifier and preparation method thereof |
| CN108314290A (en) * | 2018-02-09 | 2018-07-24 | 江苏大洋环保工程有限公司 | A kind of processing method of oily sludge |
| CN108423964A (en) * | 2018-03-26 | 2018-08-21 | 甘肃新鑫能源工程有限公司 | A kind of tank bottom oil sludge minimizing treatment process |
| CN110054393A (en) * | 2019-04-12 | 2019-07-26 | 天津大学 | A kind of processing method of oily sludge |
| CN110358640A (en) * | 2019-08-07 | 2019-10-22 | 郑州中原利达新材料有限公司 | A kind of high-speed rail insulator cleaning protective agent |
| CN111960625A (en) * | 2020-08-19 | 2020-11-20 | 中国特种设备检测研究院 | Oil sludge demulsifier and preparation method thereof |
| CN113415919A (en) * | 2021-06-29 | 2021-09-21 | 湛江远通高新技术有限公司 | Purification treatment method for cleaning emulsified sump oil in crude oil tank |
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