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CN114216813A - Method for rapidly detecting oil content of oil sludge - Google Patents

Method for rapidly detecting oil content of oil sludge Download PDF

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Publication number
CN114216813A
CN114216813A CN202111549617.5A CN202111549617A CN114216813A CN 114216813 A CN114216813 A CN 114216813A CN 202111549617 A CN202111549617 A CN 202111549617A CN 114216813 A CN114216813 A CN 114216813A
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sludge
oil
oil sludge
weighing
sample
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申锋
谭磊
刘杲华
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Cofco Yellowsea Oils & Grains Industries (shandong) Co ltd
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Cofco Yellowsea Oils & Grains Industries (shandong) Co ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
    • G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder

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Abstract

The invention discloses a method for rapidly detecting oil content of oil sludge, which comprises the following steps: s1, weighing the total mass M of the oil sludge sample; s2, centrifugally separating the oil sludge sample into liquid centrifugal grease and solid oil sludge; s3, weighing the mass M1 of the liquid centrifugal grease; s4, weighing the mass M2 of the solid oil sludge sample; s5, weighing the mass M3 of oil contained in the solid oil sludge sample; and S6 calculating the result. The method for rapidly detecting the oil content of the oil sludge can solve the problems of long detection period and low efficiency of the traditional detection method, so that the purposes of simple operation and high detection efficiency are achieved, the detection time is shortened from 4 hours to 40 minutes, the time is shortened by over 80 percent, the waiting time of leaving the oil sludge from a factory is greatly saved, and the working efficiency is effectively improved.

Description

Method for rapidly detecting oil content of oil sludge
Technical Field
The invention relates to the technical field of oil sludge detection, in particular to a method for rapidly detecting oil content of oil sludge.
Background
The vegetable crude oil is stored for a long time, partial oil sludge is settled at the bottom, the oil sludge is difficult to refine, and if no stirring system is well adopted, the oil sludge cannot be mixed into oil products, so that most enterprises generally sell the oil sludge alone. Because the value of the oil sludge is much lower than that of the oil, in order to ensure that more oil is used for processing and refining, when the oil sludge is sold, enterprises require that the oil content of the oil sludge is not more than 50 percent, and the oil-containing bright oil is not obtained. If the oil content of the oil sludge is more than 50%, the oil must be recovered again and then the oil can be continuously disposed, and the oil can be normally delivered until the oil content is less than 50% and no clear oil exists.
The conventional oil sludge detection method is an extraction method, the detection time is at least 4h, the detection period is long, and the customer goods taking and the company product sale are influenced.
Disclosure of Invention
Aiming at the technical problems in the related art, the invention provides a method for rapidly detecting oil content of oil sludge, which can overcome the defects in the prior art.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
a method for rapidly detecting oil content of oil sludge comprises the following steps:
s1 weighing the total mass M of the sludge sample: taking two clean and dry 100ml centrifuge tubes, respectively weighing 80g of uniformly mixed oil sludge samples, and recording the total mass of 2 parts of oil sludge samples as M;
s2, centrifugally separating the oil sludge sample into liquid centrifugal grease and solid oil sludge: symmetrically placing 2 parts of centrifuge tubes filled with oil sludge samples into a centrifuge, centrifuging and taking out, wherein after centrifugation, the upper layer is liquid centrifugal grease, and the lower layer is solid oil sludge;
s3, weighing mass M1 of liquid centrifugal grease: pouring all the liquid centrifugal grease in the two centrifugal tubes into a disposable cup, and weighing as M1;
s4, weighing the mass M2 of the solid oil sludge sample: pouring the solid oil sludge in the two centrifugal tubes into a disposable cup, weighing and uniformly mixing 3g-5g of the solid oil sludge in a beaker to be used as a solid oil sludge sample, and recording as M2;
s5, weighing the mass M3 of oil contained in the solid oil sludge sample: placing a beaker filled with a solid oil sludge sample in S4 into a microwave oven for microwave dehydration for 1min, washing with acetone, filtering a washing solution into an extraction bottle through qualitative filter paper, washing the oil sludge until no oil stain exists, evaporating the acetone through a water bath and recovering the acetone, blowing off the acetone remained in the extraction bottle by using an ear-sucking ball, then placing the extraction bottle into an oven at 103 +/-2 ℃ for heating for 1 hour, taking out the extraction bottle for cooling, weighing, counting, repeating the steps of heating and cooling the oven, wherein the drying time is 30min each time until the difference between the previous weighing value and the next weighing value is less than 0.0002g, and if the next weighing result is greater than the previous weighing result, the previous weighing result is accurate, and the weighing result is marked as M3;
s6 calculation of results: w1 is the mass fraction of the liquid centrifugal grease in the oil sludge sample,
Figure RE-RE-DEST_PATH_IMAGE001
w2 represents the oil content of the solid oil sludge,
Figure RE-632118DEST_PATH_IMAGE002
w is the oil content of the sludge sample,
Figure RE-RE-DEST_PATH_IMAGE003
。
further, in the step S2, the rotating speed of the centrifuge is 3000 r/min, and the centrifugation time is 30 min.
Further, the M, M1, M2 and M3 are accurate to 0.001 g.
The invention has the beneficial effects that: the method for rapidly detecting the oil content of the oil sludge can solve the problems of long detection period and low efficiency of the traditional detection method, so that the purposes of simple operation and high detection efficiency are achieved, the detection time is shortened from 4h to 40min and is shortened by over 80 percent, the waiting time of leaving the oil sludge from a factory is greatly saved, and the working efficiency is effectively improved.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
The method for rapidly detecting the oil content of the oil sludge comprises the following steps:
s1 weighing the total mass M of the sludge sample: taking two clean and dry 100ml centrifuge tubes, respectively weighing 80g of uniformly mixed oil sludge samples, and recording the total mass of 2 parts of oil sludge samples as M;
s2, centrifugally separating the oil sludge sample into liquid centrifugal grease and solid oil sludge: symmetrically placing 2 parts of centrifuge tubes filled with oil sludge samples into a centrifuge, centrifuging and taking out, wherein after centrifugation, the upper layer is liquid centrifugal grease, and the lower layer is solid oil sludge;
s3, weighing mass M1 of liquid centrifugal grease: pouring all the liquid centrifugal grease in the two centrifugal tubes into a disposable cup, and weighing as M1;
s4, weighing the mass M2 of the solid oil sludge sample: pouring the solid oil sludge in the two centrifugal tubes into a disposable cup, weighing and uniformly mixing 3g-5g of the solid oil sludge in a beaker to be used as a solid oil sludge sample, and recording as M2;
s5, weighing the mass M3 of oil contained in the solid oil sludge sample: placing a beaker filled with a solid oil sludge sample in S4 into a microwave oven for microwave dehydration for 1min, washing with acetone, filtering a washing solution into an extraction bottle through qualitative filter paper, washing the oil sludge until no oil stain exists, evaporating the acetone through a water bath and recovering the acetone, blowing off the acetone remained in the extraction bottle by using an ear-sucking ball, then placing the extraction bottle into an oven at 103 +/-2 ℃ for heating for 1 hour, taking out the extraction bottle for cooling, weighing, counting, repeating the steps of heating and cooling the oven, wherein the drying time is 30min each time until the difference between the previous weighing value and the next weighing value is less than 0.0002g, and if the next weighing result is greater than the previous weighing result, the previous weighing result is accurate, and the weighing result is marked as M3;
s6 calculation of results: w1 is the mass fraction of the liquid centrifugal grease in the oil sludge sample,
Figure RE-454580DEST_PATH_IMAGE001
w2 represents the oil content of the solid oil sludge,
Figure RE-285395DEST_PATH_IMAGE004
w is the oil content of the sludge sample,
Figure RE-484295DEST_PATH_IMAGE003
。
in the step S2, the rotating speed of the centrifuge is 3000 r/min, the centrifugation time is 30min, and the separation is sufficient.
The M, M1, M2 and M3 are accurate to 0.001g, and the result is more accurate.
In order to facilitate understanding of the above-described technical aspects of the present invention, the above-described technical aspects of the present invention will be described in detail below in terms of specific usage.
When the method is used specifically, two clean and dry 100ml centrifuge tubes are taken, 80g of uniformly mixed oil sludge sample is weighed respectively, the total mass of 2 parts of oil sludge sample is recorded as M, 2 parts of centrifuge tubes filled with the oil sludge sample are symmetrically placed into a centrifuge, the rotation speed of the centrifuge is 3000 r/min, the centrifugation time is 30min, the centrifuge tubes are taken out after centrifugation, liquid centrifugal grease is arranged at the upper layer and solid oil sludge is arranged at the lower layer after centrifugation, the liquid centrifugal grease in the two centrifuge tubes is completely poured into a disposable cup and weighed, recorded as M1, the solid oil sludge in the two centrifuge tubes is poured into the disposable cup, 3g to 5g of uniformly mixed solid oil sludge is weighed and placed into a beaker as a solid oil sludge sample, recorded as M2, the beaker filled with the solid oil sludge sample is placed into a microwave oven for microwave dehydration for 1min, then acetone is used for washing, the solid oil sludge is filtered into an extraction bottle through qualitative washing liquid, and washed until no oil stain exists, then evaporating out and recycling the acetone through water bath, blowing off the residual acetone in the extraction bottle by using an ear suction bulb, then putting the extraction bottle into an oven with the temperature of 103 +/-2 ℃ for heating for 1 hour, taking out the extraction bottle, cooling, weighing, counting, repeating the steps of heating and cooling in the oven, and weighing, wherein the repeated drying time is 30min each time until the difference value between the two weighing values is less than 0.0002g, if the subsequent weighing result is greater than the previous weighing result, the previous weighing result is taken as the standard, the weighing result is marked as M3, the M, M1, M2 and M3 are accurate to 0.001g, and W1 is the mass fraction of the liquid centrifugal grease in the oil sludge sample,
Figure RE-DEST_PATH_IMAGE005
w2 represents the oil content of the solid oil sludge,
Figure RE-215491DEST_PATH_IMAGE002
w is the oil content of the sludge sample,
Figure RE-208855DEST_PATH_IMAGE003
。
in conclusion, by means of the technical scheme, the problems of long detection period and low efficiency of the traditional detection method can be solved, so that the purposes of simple operation and high detection efficiency are achieved, the detection time is shortened from 4h to 40min and is shortened by over 80%, the waiting time for leaving the oil sludge from a factory is greatly saved, and the working efficiency is effectively improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims (3)

1.一种快速检测油泥含油的方法，其特征在于，包括以下步骤：1. a method for rapidly detecting oily sludge oil, is characterized in that, comprises the following steps: S1称量油泥试样的总质量M：取两支洁净干燥的100ml离心管，分别称取80g混匀的油泥试样，2份油泥试样的总质量记为M；S1 Weigh the total mass M of the sludge sample: Take two clean and dry 100ml centrifuge tubes, respectively weigh 80g of the mixed sludge sample, and the total mass of the two sludge samples is recorded as M; S2将油泥试样离心分离为液态离心油脂和固态油泥：将2份装有油泥试样的离心管对称放入离心机内,离心后取出，离心后上层为液态离心油脂，下层为固态油泥；S2 Centrifuge the sludge sample into liquid centrifugal grease and solid sludge: put 2 centrifuge tubes containing sludge samples into the centrifuge symmetrically, take them out after centrifugation, the upper layer is liquid centrifugal grease and the lower layer is solid sludge; S3称量液态离心油脂质量M1：将两支离心管内的液态离心油脂全部倒入一次性口杯内称重，记为M1；S3 Weighing the mass of liquid centrifugal grease M1: Pour all the liquid centrifugal grease in the two centrifuge tubes into the disposable cup and weigh, denoted as M1; S4称取固态油泥试样质量M2：将两支离心管内的固态油泥倒入一次性口杯内，称取混匀固态油泥3g-5g于烧杯中作为固态油泥试样，记为M2；S4 Weigh the solid sludge sample mass M2: Pour the solid sludge in the two centrifuge tubes into the disposable cup, weigh 3g-5g of the mixed solid sludge in the beaker as the solid sludge sample, and denote it as M2; S5称量固态油泥试样中含油的质量M3：将S4中装有固态油泥试样的烧杯放入微波炉中微波除水1min，然后用丙酮洗涤，洗涤液通过定性滤纸滤入抽提瓶中，将油泥洗至无油迹为止，然后通过水浴将丙酮蒸出并回收，再用吸耳球吹去抽提瓶中残留的丙酮，然后将抽提瓶放入103℃±2℃烘箱中加热1小时，取出抽提瓶冷却后称量，记数，重复上述烘箱加热、冷却后称量的步骤，每次复烘时间为30min，直到前后两次称量值差值小于0.0002g为止，如果后一次称量结果大于前一次称量结果，以前一次称量结果为准，该称量结果记为M3；S5 Weigh the mass of oil in the solid sludge sample M3: put the beaker containing the solid sludge sample in S4 into a microwave oven to remove water for 1 min, then wash with acetone, and filter the washing solution into an extraction bottle through qualitative filter paper. Wash the sludge until there is no oil trace, then steam the acetone through a water bath and recover it, and then use a suction ball to blow off the residual acetone in the extraction bottle, then put the extraction bottle into an oven at 103°C ± 2°C and heat for 1 hours, take out the extraction bottle and weigh it after cooling, count the number, repeat the above steps of heating and cooling in the oven, and rebake each time for 30 minutes, until the difference between the two weighing values before and after is less than 0.0002g. If a weighing result is greater than the previous weighing result, the previous weighing result shall prevail, and the weighing result shall be recorded as M3; S6结果计算：W1为液态离心油脂占油泥样品的质量分数，
Figure RE-RE-DEST_PATH_IMAGE002
，W2为固态油泥的含油率，
Figure RE-RE-DEST_PATH_IMAGE004
，W为油泥试样的含油率，
Figure RE-RE-DEST_PATH_IMAGE006
。S6 result calculation: W1 is the mass fraction of liquid centrifugal grease in the sludge sample,
Figure RE-RE-DEST_PATH_IMAGE002
, W2 is the oil content of solid sludge,
Figure RE-RE-DEST_PATH_IMAGE004
, W is the oil content of the sludge sample,
Figure RE-RE-DEST_PATH_IMAGE006
. 2.根据权利要求1所述的快速检测油泥含油的方法，其特征在于，所述S2中离心机转速为3000转/min，离心时间为30min。2. the method for rapidly detecting oily sludge according to claim 1, is characterized in that, in described S2, centrifuge rotating speed is 3000 rev/min, and centrifugation time is 30min. 3.根据权利要求1所述的快速检测油泥含油的方法，其特征在于，所述M、M1、M2、M3精确至0.001g。3. The method for rapidly detecting oil in sludge according to claim 1, wherein the M, M1, M2, and M3 are accurate to 0.001 g.
CN202111549617.5A 2021-12-17 2021-12-17 Method for rapidly detecting oil content of oil sludge Pending CN114216813A (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4938877A (en) * 1989-02-13 1990-07-03 Exxon Research And Engineering Company Unique and effective separation technique for oil contaminated sludge
CN203170660U (en) * 2013-04-26 2013-09-04 中粮黄海粮油工业(山东)有限公司 Cleaning system for oil sludge at bottom of oil tank
CN105277462A (en) * 2014-06-19 2016-01-27 浙江海洋学院 Composition content analysis method of tank bottom aged oil sludge
CN109115650A (en) * 2018-06-22 2019-01-01 苏州净瑞环保科技有限公司 Gutter oil oil content accurate quantification method
CN113092612A (en) * 2021-03-31 2021-07-09 武汉钢铁有限公司 Method for detecting oil content in cold rolling oil sludge
CN113433202A (en) * 2021-06-28 2021-09-24 数皮科技(湖北)有限公司 Method for calculating oil content of shale oil in drilling field

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4938877A (en) * 1989-02-13 1990-07-03 Exxon Research And Engineering Company Unique and effective separation technique for oil contaminated sludge
CN203170660U (en) * 2013-04-26 2013-09-04 中粮黄海粮油工业(山东)有限公司 Cleaning system for oil sludge at bottom of oil tank
CN105277462A (en) * 2014-06-19 2016-01-27 浙江海洋学院 Composition content analysis method of tank bottom aged oil sludge
CN109115650A (en) * 2018-06-22 2019-01-01 苏州净瑞环保科技有限公司 Gutter oil oil content accurate quantification method
CN113092612A (en) * 2021-03-31 2021-07-09 武汉钢铁有限公司 Method for detecting oil content in cold rolling oil sludge
CN113433202A (en) * 2021-06-28 2021-09-24 数皮科技(湖北)有限公司 Method for calculating oil content of shale oil in drilling field

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Application publication date: 20220322