CN100523157C - 废润滑油的再生工艺技术 - Google Patents
废润滑油的再生工艺技术 Download PDFInfo
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- CN100523157C CN100523157C CNB2006100869262A CN200610086926A CN100523157C CN 100523157 C CN100523157 C CN 100523157C CN B2006100869262 A CNB2006100869262 A CN B2006100869262A CN 200610086926 A CN200610086926 A CN 200610086926A CN 100523157 C CN100523157 C CN 100523157C
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- oil
- waste
- lubricating oil
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 39
- 230000001172 regenerating Effects 0.000 title abstract description 5
- 238000010327 methods by industry Methods 0.000 title description 3
- 239000002699 waste material Substances 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 21
- 238000007670 refining Methods 0.000 claims abstract description 5
- 239000003921 oil Substances 0.000 claims description 42
- 238000000526 short-path distillation Methods 0.000 claims description 13
- 239000000314 lubricant Substances 0.000 claims description 12
- 238000002203 pretreatment Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000446 fuel Substances 0.000 claims description 5
- 239000004519 grease Substances 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 238000000605 extraction Methods 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 3
- 238000005194 fractionation Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 238000009418 renovation Methods 0.000 claims description 2
- 238000004062 sedimentation Methods 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 239000002199 base oil Substances 0.000 abstract description 15
- 239000002351 wastewater Substances 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000011069 regeneration method Methods 0.000 description 6
- 239000012535 impurity Substances 0.000 description 5
- 230000008929 regeneration Effects 0.000 description 5
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound 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OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005189 flocculation Methods 0.000 description 3
- 230000016615 flocculation Effects 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000005696 Diammonium phosphate Substances 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound 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[NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 description 2
- 229910000388 diammonium phosphate Inorganic materials 0.000 description 2
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OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound 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[Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical group 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Abstract
本发明是一种废润滑油的再生方法,其特点是废润滑油经过预处理、精馏、短程蒸馏、白土精制等工艺过程,得到符合规格指标的轻、中、重质润滑油基础油。本发明与已有技术相比,工艺简单、易行,操作可灵活调控,而且工艺过程不产生废水和废气,基本无污染,因此本发明的方法可将报废的润滑油处理后回收利用,是一种具有较大的社会效益和经济效益的发明。
Description
技术领域
本发明涉及润滑剂技术领域,更具体地说是一种废润滑油的再生工艺技术。
背景技术
随着工业的发展,特别是汽车工业的发展,我国的润滑油产量和使用量迅速增长,因而废润滑油的排放量也随着增加。这些报废的润滑油或丢弃或简单再利用,都对环境造成极大危害。为解决这一问题,国内外的科学家做了大量探索,试图找到一种即能把废润滑油回收利用,又不污染环境的技术和工艺。《无污染废油再生白土高温精制工艺及工业化装置>>(公开号CN87105043A)介绍了一种取消硫酸精制的白土高温精制废油再生工艺,精制温度350〜400Ό,生产出低粘度·和高粘度润滑油基础油,用这些基础油调配出各种润滑油产品出厂。该发明的缺点是未给出生产的基础油的质量数据,不能生产合格的基础油产品,只适合小型废油再生厂生产自用的基础油。
〈〈润滑油无酸再生工艺代替硫酸改进废油再生酸一土工艺》(专利号ZL92111245.9)发明,给出的方法是用多乙撑胺类凝聚剂促使废油中的污染物凝聚分离出来,以达到净化废油的目的。但用此方法得到的再生产品有多项指标达不到基础油质量指标的要求,不能生产出合格的润滑油基础油。
〈〈废润滑油絮凝法再生工艺》(公开号CN1072949A)是用非离子水溶性表面活性剂絮凝废润滑油的再生方法。该方法的目的是取代蒸馏、酸碱洗和白土精制。但用这个方法再生的基础油产品的闪点、酸值、颜色等多项指标均达不到基础油质量标准的要求。
Phillips PROP过程(专利号U. S4151072)是把化学脱金属与白土/加氢结合起来,废油同水溶液混合,如废油中加入磷酸二铵水溶液,磷酸二铵同废油中的金属污染物反应,生成溶解度低的磷酸盐,从油和水中分离出去,除去金属的原料油、过滤并且加热,进行白土精制或者通过Ni/Mo催化剂床进行加氢精制。该技术的主要缺点是过程中产生大量的固体废物,如废滤饼,还会产生大量来自化学溶液的废水。
发明内容
本发明的目的是克服现有技术的缺点,提出一种能生产出合格的润滑油基础油的废润滑油再生工艺技术。本发明的工艺技术主要包括废油预处理、精馏、短程蒸馏和白土精制等部分。具体步骤如下:
(1)废油预处理:将废油置于一个带搅拌的混合器中,在室温_60°C条件下搅拌10 — 30分钟,然后移入沉降罐沉降2 — 10小时,以除去水分和ΐίΐ械杂质;
(2)精馏:步骤(I)预处理后的废油经过滤后进入精馏塔,其操作条件:温度为150—190°C、真空度为200 — 300Pa;
(3)短程蒸馏:步骤(2)脱除水和轻质燃料的废油或没有混入水和轻质燃料的废油经步骤(I)预处理后进入第一级短程蒸馏器,其操作条件:温度170-200°C、真空度50 —70Pa,分馏轻质润滑油基础油料后的物料进入第二级短程蒸馏,其操作条件:温度210 — 240°C、真空度8 — 13Pa,蒸出中质润滑油基础油料后的物料进入第三级短程蒸馏器,其操作条件:温度240 —260°C,真空度4 —7pa,蒸出重质润滑油基础油料,残油由塔底排出,或者通过第一级和第二级短程蒸馏,分馏出轻、中质润滑油基础油料,残油由塔底排出;
(4)白土精制:经步骤(3)蒸馏出的轻、中、重质润滑油基础油料,分别进入白土精制装置,润滑油基础油料和白土在精制装置中加热搅拌,.其操作条件:精制温度为110—160°C、停流时间20—50分钟、白土加入量为待精制的润滑油基础油料重量的1 — 9%,最后得到指标符合我国润滑油基础油质量指标的润滑油通用基础油。
本发明所述的步骤(I)预处理过程,主要除去废润滑油中的水份和机械杂质。如果废油没有混入水和370°C前的轻质燃料可不经过精馏,经预处理后直接进入步骤(3)的短程蒸馏。
本发明所述的步骤(2)精馏过程,目的是除去微量水和轻质燃料,以保证润滑油基础油的水含量和闪点合格。
本发明所述的蒸馏过程,装置始终在低温、高真空及短接触时间下运转,避免过程中的物料分解。步骤(3)所述的短程蒸馏(Sh ο r t pathd i s t i I I a t i ο η )也称分子蒸饱(molecular distillation),该过程根据废润滑油的性质和所要求生产的基础油的种类,可选择两级或三级短程蒸馏,如生产轻质和中质润滑油基础油,可选择第一级和第二级短程蒸馏,同时生产轻、中和重质润滑油基础油,可选择第一级、第二级和第三级短程蒸馏。
本发明所述的白土精制,目的是除去油品中的微量杂质和脱色,保证油品的质量符合我国润滑油基础油的质量标准(QSHR001 —95)。该过程的特点是精制温度较低,避免油品进一步氧化,这样能节省白土用量,达到更好的精制效果。
本发明的主要优点和效果:
本发明是一种组合工艺,方法简单、易行,所用的设备都是石油化工行业常用的设备,国内均可制造,而且操作灵活,可根据废油的性能、组成和馏程范围,来调控操作条件,因此适用于处理各种废润滑办O
i发明各工艺单元$在较低温度下操逆,在加工户:程中不氧化、本发明工艺过程不产生废水和废气,白土精制中产生的白土渣容易处理,因此本发明的法基本无污染。
综上所述,本发明与已有技术相比,工艺简单,操作灵活,基本无污染,生产的润滑油基础油质量指标,全部达到润滑油通用基础油标准要求,可用于调制各种润滑油产品,因此本发明的废润滑油再生方法具有较大的社会效益和经济效益。
具体实施方式
下面通过具体实例进一步说明本发明的特点。
实例I
本实例所用的废润滑油A和白土性质分别见表I和表2。IOk g废润滑油经过预处理、精馏、短程蒸馏和白土精制,得到HV1100、·HV1200和HV1350三种润滑油基础油产品,其性质见表3。主要工艺条件见表5。
'实例2
本实例所用的废润滑油B和白土性质分别见表I和表2。
IOk g'废润滑油B经过预处理、短程蒸馏和白土精制,得到HV1150和HV1350两种润滑油基础油产品。润滑油基础油产品性质见表4。主要工艺条件见表6。
表I废润滑油性质
表3实例I得到的润滑油基础油性质
表4实例2得到的润滑油基础油性质
表5实例I工艺操作条件—
表6实例2工艺操作条件_
Claims (1)
1. 一种废润滑油的再生方法,其特征在于包括以下步骤: (1)废油预处理:将废油置于一个带搅拌的混合器中,在室温一60°C条件下搅拌10 — 30分钟,然后移入沉降罐沉降2 —10小时; (2)精馏:步骤(I)预处理后的废油经过滤后进入精馏塔,其操作条件:温度为150 — 190°C、真空度为200 — 300Pa; (3)短程蒸馏:步骤(2)脱除水和370°C前轻质燃料的废油进入第一级短程蒸馏器,其操作条件:温度170—200°C、真空度50 — 70Pa,分馏轻质润滑油基础油料后的物料进入第二级短程蒸馏器,其操作条件:温度210 — 240°C、真空度8 — 13pa,蒸出中质润滑油基础油料后的物料进入第三级短程蒸馏器,其操作条件:温度240 — 260°C,真空度4一7Pa,蒸出重质润滑油基础油料,残油由塔底排出,或者将预处理后的废润滑油通过第一级和第二级短程蒸馏,分馏出轻质和中质润滑油基础油料,残油由塔底排出; (4)白土精制:经步骤(3)蒸馏出的轻、中、重质润滑油基础油料,分别进入白土精制装置,润滑油基础油料和白土在精制装置中加热搅拌,其操作条件:精制温度为110 — 160°C、停留时间20—50分钟、白土加入量为待精制的润滑油基础油料重量的I一9%,最后得到指标符合我国润滑油基础油质量指标的润滑油通用基础油。
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CN102373108B (zh) * | 2010-08-18 | 2013-09-25 | 北京金隅红树林环保技术有限责任公司 | 一种废润滑油再生基础油的工艺方法 |
CN102191123B (zh) * | 2011-04-14 | 2013-03-13 | 湖北爱国石化有限公司 | 一种废油再生生产工艺 |
CN102260584B (zh) * | 2011-06-24 | 2013-08-14 | 上海宝钢废旧油处理有限公司 | 一种工业废润滑油再生工艺 |
CN103013644B (zh) * | 2011-09-22 | 2014-12-03 | 中国石油化工股份有限公司 | 一种从废润滑油生产基础油的方法 |
CN103045342B (zh) * | 2011-10-17 | 2014-06-04 | 中国石油天然气股份有限公司 | 一种废润滑油预处理方法 |
CN102504933B (zh) * | 2011-11-17 | 2013-05-15 | 北京耀锋技术开发中心 | 废润滑油的再生方法 |
CN102839044A (zh) * | 2012-08-02 | 2012-12-26 | 云南钛业股份有限公司 | 一种eb炉真空污染油过滤提纯方法 |
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CN103773445B (zh) * | 2013-09-25 | 2015-04-01 | 淄博助友润滑油科技有限公司 | 一种工业废油再生生产线及生产工艺 |
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