CN104801266A - Novel process for harmless treatment of waste clay - Google Patents
Novel process for harmless treatment of waste clay Download PDFInfo
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- CN104801266A CN104801266A CN201510164910.8A CN201510164910A CN104801266A CN 104801266 A CN104801266 A CN 104801266A CN 201510164910 A CN201510164910 A CN 201510164910A CN 104801266 A CN104801266 A CN 104801266A
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- centrifugal
- solvent naphtha
- bleaching clay
- spent bleaching
- clay
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Abstract
The invention discloses a novel process for harmless treatment of waste clay. According to the novel process, waste clay is added into solvent oil, a four-stage centrifugal process is adopted for treatment, and the treated clay is dried, so that harmless clay is obtained. According to the invention, under the effect of a centrifugal machine, the solvent oil is mixed with the waste clay and then stirred, four-stage centrifugation is carried out, oil adsorbed into the waste clay can be fully separated through reasonably selecting centrifugal conditions, the clay treated through the method contains no machine oil after being detected by a detection mechanism, after the solvent oil is separated from the machine oil, the solvent oil can be recycled, leached machine oil can be recovered for use, and the clay can be used as raw material of air-added bricks after being dried.
Description
Technical field
The present invention relates to Reclaimed Base Oil field, be specifically related to a kind of spent bleaching clay novel technique for harmless treatment.
Background technology
Along with the development of Chinese environmental protection, energy-saving industrial, resource recycling, harmless treatment have become the most popular current problem, and Reclaimed Base Oil industry is also more and more had an optimistic view of by people.
Reclaimed Base Oil industry has very large development potentiality, but there is a problem to limit enterprise development always, conventional regeneration technique is all first with solvent refining or hydroprocessing technique, base oil is regenerated, and then with clay-filtered, and the spent bleaching clay after having refined can with a certain amount of base oil, this spent bleaching clay after refining the base oil that remain still can up to 30%, even if through squeezing, extract, also minimum can only to 10%.This adds very large cost to enterprise, and this carclazyte containing base oil (lubricating oil) to be also decided to be danger useless, one kilogram of used oil can pollute 1000 tons of water, and has no idea to recover.
Summary of the invention
The object of the invention is for above present situation, a kind of spent bleaching clay novel technique for harmless treatment that thoroughly can remove base oil in described spent bleaching clay is provided.
The present invention is by the following technical solutions:
A kind of spent bleaching clay novel technique for harmless treatment, it adds in solvent naphtha by the spent bleaching clay containing useless base oil, and adopt level Four centrifuging process to process, the carclazyte drying after process obtains innoxious carclazyte;
Concrete steps are:
(1) by spent bleaching clay and solvent naphtha 1:1.5-2 mixing in mass ratio, add in centrifuge, centrifugal 30-35min under the rotating speed of 6800-7000r/min, filter and make Separation of Solid and Liquid;
(2) spent bleaching clay filtered out again in mass ratio 1:3.5-4 mix with solvent naphtha, add in centrifuge, centrifugal 18-20min under the rotating speed of 8800-9000r/min, filter make Separation of Solid and Liquid;
(3) spent bleaching clay filtered out again in mass ratio 1:5.5-6.5 mix with solvent naphtha, add in centrifuge, centrifugal 25-30min under the rotating speed of 9800-10000r/min, filter make Separation of Solid and Liquid;
(4) spent bleaching clay filtered out again in mass ratio 1:7.5-8.5 mix with solvent naphtha, add in centrifuge, centrifugal 10-15min under the rotating speed of 12800-14000r/min, filter make Separation of Solid and Liquid;
(5) carclazyte filtered out is dried at 800-1000 DEG C.
Preferably, described solvent naphtha is 6# solvent naphtha.
Preferably, described innoxious carclazyte is used as the raw material of aerated bricks, to realize its recycling.
The present invention utilizes solvent naphtha under the effect of centrifuge, solvent naphtha and spent bleaching clay are carried out mix and blend, carry out level Four centrifugal, by choose reasonable centrifugal condition, the oil adsorbed can be separated completely in spent bleaching clay, mechanism is detected the carclazyte after this method process after testing, lubricating oil content is zero, and after solvent naphtha and lubricating oil separation, solvent naphtha can be recycled, the lubricating oil leached is recyclable, and carclazyte is dried the raw material that can be used as aerated bricks and used.The separation condition that the present invention determines has selective to the spent bleaching clay containing lubricating oil, all can not realize the separation completely of lubricating oil after changing centrifugal condition order or exchange centrifugal condition.The present invention greatly reduces the production cost of enterprise, is suitable for large-scale industrialization application, has good economic benefit.
Detailed description of the invention
With specific embodiment, technical scheme of the present invention is described in detail below.
Embodiment 1
Added by 100g Reclaimed Base Oil (lubricating oil) in the clean carclazyte of 300g to absorb and obtain spent bleaching clay completely, then adopt technical scheme of the present invention to carry out harmless treatment to it, concrete steps are as follows:
(1) by spent bleaching clay and the 1:2 mixing in mass ratio of 6# solvent naphtha, add in centrifuge, centrifugal 30min under the rotating speed of 6800r/min, filter and make Separation of Solid and Liquid;
(2) spent bleaching clay filtered out is 1:4 and 6# solvent naphtha mixing in mass ratio again, adds in centrifuge, centrifugal 20min under the rotating speed of 8800r/min, filters and makes Separation of Solid and Liquid;
(3) spent bleaching clay filtered out is 1:6 and 6# solvent naphtha mixing in mass ratio again, adds in centrifuge, centrifugal 25min under the rotating speed of 9800r/min, filters and makes Separation of Solid and Liquid;
(4) spent bleaching clay filtered out is 1:8 and 6# solvent naphtha mixing in mass ratio again, adds in centrifuge, centrifugal 10min under the rotating speed of 12800r/min, filters and makes Separation of Solid and Liquid;
Detect: the solid filtered out is weighed as 302.5g by after 6# solvent naphtha evaporate to dryness at 70 DEG C, (380 DEG C) heating 20min under the condition higher than lubricating oil boiling point again, and then weigh, now quality is still 302.5g, its additional weight is the innoxious impurity in Reclaimed Base Oil, proves that the content of base oil in sample after aforementioned four steps are centrifugal is zero;
(5) solid after detection is dried, as the raw material of aerated bricks at 1000 DEG C.
Comparative example 1a
Reclaimed Base Oil (lubricating oil) identical with embodiment 1 for 100g is added in the clean carclazyte of 300g to absorb and obtains spent bleaching clay completely, it is made to mix with the 6# solvent naphtha being equivalent to 6# solvent naphtha quality summation used in (1) in embodiment 1-(4) step, add in centrifuge, centrifugal 85min under the rotating speed of 12800r/min, filtration makes Separation of Solid and Liquid, after solid removes 6# solvent naphtha under the same conditions as example 1, be weighed as 311.3g, 20min is heated again at 380 DEG C, and then weigh, for 303.1g, loss of weight 8.2g, that is after the process of this comparative example, at least 8.2g base oil is contained in spent bleaching clay.
Comparative example 1b
Sequence of steps centrifugal for four steps in embodiment 1 is adjusted to (4), (3), (2), (1), the spent bleaching clay in Processing Example 1 is carried out by the method, after the centrifugal rear solid of four steps removes 6# solvent naphtha under the same conditions as example 1, be weighed as 308.0g, at 380 DEG C, heating 20min again, and then weigh, is 302.9g, loss of weight 5.1g, that is at least contains 5.1g base oil in spent bleaching clay after the process of this comparative example.
Comparative example 1c
The mass ratio of (1) in embodiment 1-(4) step is constant, centrifugal rotational speed and time are carried out centrifugal according to the order of (4), (3), (2), (1) in embodiment 1, other conditions are all identical with embodiment 1, after the centrifugal rear solid of four steps removes 6# solvent naphtha under the same conditions as example 1, be weighed as 308.5g, 20min is heated again at 380 DEG C, and then weigh, for 303g, loss of weight 5.5g, that is at least contains 5.5g base oil in spent bleaching clay after the process of this comparative example.
Comparative example 1d
Centrifugal rotational speed and the time of (1) in embodiment 1-(4) step are constant, mass ratio is carried out centrifugal according to the order of (4), (3), (2), (1) in embodiment 1, other conditions are all identical with embodiment 1, after the centrifugal rear solid of four steps removes 6# solvent naphtha under the same conditions as example 1, be weighed as 307.6g, 20min is heated again at 380 DEG C, and then weigh, for 302.6g, loss of weight 5.0g, that is at least contains 5.0g base oil in spent bleaching clay after the process of this comparative example.
Embodiment 2
Added by 100g Reclaimed Base Oil (lubricating oil) in the clean carclazyte of 300g to absorb and obtain spent bleaching clay completely, then adopt technical scheme of the present invention to carry out harmless treatment to it, concrete steps are as follows:
(1) by spent bleaching clay and the 1:1.5 mixing in mass ratio of 6# solvent naphtha, add in centrifuge, centrifugal 33min under the rotating speed of 6900r/min, filter and make Separation of Solid and Liquid;
(2) spent bleaching clay filtered out is 1:3.8 and 6# solvent naphtha mixing in mass ratio again, adds in centrifuge, centrifugal 18min under the rotating speed of 9000r/min, filters and makes Separation of Solid and Liquid;
(3) spent bleaching clay filtered out is 1:6.5 and 6# solvent naphtha mixing in mass ratio again, adds in centrifuge, centrifugal 28min under the rotating speed of 9900r/min, filters and makes Separation of Solid and Liquid;
(4) spent bleaching clay filtered out is 1:7.5 and 6# solvent naphtha mixing in mass ratio again, adds in centrifuge, centrifugal 15min under the rotating speed of 13500r/min, filters and makes Separation of Solid and Liquid;
Detect: the solid filtered out is weighed as 302.0g by after 6# solvent naphtha evaporate to dryness at 70 DEG C, 20min is heated again at 380 DEG C, and then weigh, now quality is still 302.0g, its additional weight is the innoxious impurity in Reclaimed Base Oil, proves that the content of base oil in sample after aforementioned four steps are centrifugal is zero;
(5) solid after detection is dried, as the raw material of aerated bricks at 900 DEG C.
Embodiment 3
Added by 100g Reclaimed Base Oil in the clean carclazyte of 300g to absorb and obtain spent bleaching clay completely, then adopt technical scheme of the present invention to carry out harmless treatment to it, concrete steps are as follows:
(1) by spent bleaching clay and the 1:1.8 mixing in mass ratio of 6# solvent naphtha, add in centrifuge, centrifugal 35min under the rotating speed of 7000r/min, filter and make Separation of Solid and Liquid;
(2) spent bleaching clay filtered out is 1:3.5 and 6# solvent naphtha mixing in mass ratio again, adds in centrifuge, centrifugal 19min under the rotating speed of 8500r/min, filters and makes Separation of Solid and Liquid;
(3) spent bleaching clay filtered out is 1:5.5 and 6# solvent naphtha mixing in mass ratio again, adds in centrifuge, centrifugal 30min under the rotating speed of 10000r/min, filters and makes Separation of Solid and Liquid;
(4) spent bleaching clay filtered out is 1:8.5 and 6# solvent naphtha mixing in mass ratio again, adds in centrifuge, centrifugal 13min under the rotating speed of 14000r/min, filters and makes Separation of Solid and Liquid;
Detect: the solid filtered out is weighed as 302.1g by after 6# solvent naphtha evaporate to dryness at 70 DEG C, 20min is heated again at 380 DEG C, and then weigh, now quality is still 302.1g, its additional weight is the innoxious impurity in Reclaimed Base Oil, proves that the content of base oil in sample after aforementioned four steps are centrifugal is zero;
(5) solid after detection is dried, as the raw material of aerated bricks at 800 DEG C.
Claims (3)
1. a spent bleaching clay novel technique for harmless treatment, is characterized in that: spent bleaching clay added in solvent naphtha, and adopt level Four centrifuging process to process, the carclazyte drying after process obtains innoxious carclazyte;
Concrete steps are:
(1) by spent bleaching clay and solvent naphtha 1:1.5-2 mixing in mass ratio, add in centrifuge, centrifugal 30-35min under the rotating speed of 6800-7000r/min, filter and make Separation of Solid and Liquid;
(2) spent bleaching clay that filters out of step (1) more in mass ratio 1:3.5-4 mix with solvent naphtha, add in centrifuge, centrifugal 18-20min under the rotating speed of 8800-9000r/min, filter and make Separation of Solid and Liquid;
(3) spent bleaching clay that filters out of step (2) more in mass ratio 1:5.5-6.5 mix with solvent naphtha, add in centrifuge, centrifugal 25-30min under the rotating speed of 9800-10000r/min, filter and make Separation of Solid and Liquid;
(4) spent bleaching clay that filters out of step (3) more in mass ratio 1:7.5-8.5 mix with solvent naphtha, add in centrifuge, centrifugal 10-15min under the rotating speed of 12800-14000r/min, filter and make Separation of Solid and Liquid;
(5) carclazyte that step (4) filters out is dried at 800-1000 DEG C.
2. technique according to claim 1, is characterized in that: described solvent naphtha is 6# solvent naphtha.
3. technique according to claim 1, is characterized in that: described innoxious carclazyte is used as the raw material of aerated bricks.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510164910.8A CN104801266A (en) | 2015-04-09 | 2015-04-09 | Novel process for harmless treatment of waste clay |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510164910.8A CN104801266A (en) | 2015-04-09 | 2015-04-09 | Novel process for harmless treatment of waste clay |
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| CN104801266A true CN104801266A (en) | 2015-07-29 |
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| CN201510164910.8A Pending CN104801266A (en) | 2015-04-09 | 2015-04-09 | Novel process for harmless treatment of waste clay |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111375392A (en) * | 2018-12-28 | 2020-07-07 | 中国石油化工股份有限公司 | Method for treating waste clay |
| CN111606623A (en) * | 2020-05-18 | 2020-09-01 | 赵汇川 | Method for making brick by using waste clay |
Citations (3)
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| CN101186861A (en) * | 2007-12-14 | 2008-05-28 | 范生安 | Technique for distilling oil from waste carclazyte by extraction method and device thereof |
| CN102179239A (en) * | 2011-01-22 | 2011-09-14 | 烟台市牟平区留德润滑油销售有限公司 | Method for recycling carclazyte used for refining petroleum |
| CN103213972A (en) * | 2013-03-22 | 2013-07-24 | 中国科学院山西煤炭化学研究所 | Method for rapid continuous separation and purification of graphite oxide |
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2015
- 2015-04-09 CN CN201510164910.8A patent/CN104801266A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101186861A (en) * | 2007-12-14 | 2008-05-28 | 范生安 | Technique for distilling oil from waste carclazyte by extraction method and device thereof |
| CN102179239A (en) * | 2011-01-22 | 2011-09-14 | 烟台市牟平区留德润滑油销售有限公司 | Method for recycling carclazyte used for refining petroleum |
| CN103213972A (en) * | 2013-03-22 | 2013-07-24 | 中国科学院山西煤炭化学研究所 | Method for rapid continuous separation and purification of graphite oxide |
Non-Patent Citations (2)
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| 周秋香等: "油脂精炼废白土中油脂回收和废白土再生工艺的研究", 《中国油脂》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111375392A (en) * | 2018-12-28 | 2020-07-07 | 中国石油化工股份有限公司 | Method for treating waste clay |
| CN111606623A (en) * | 2020-05-18 | 2020-09-01 | 赵汇川 | Method for making brick by using waste clay |
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Application publication date: 20150729 |
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