废润滑油吸附再生研究进展

doi:10.3969/j.issn.1673-5854.2021.04.008

Abstract

Abstract:

With the rapid development of automobiles and manufacturing, the demand for lubricant has also greatly increased, and a large amount of waste lubricant has also been produced. Based on the current pollution status of waste lubricant, this article introduced its deterioration process, pollutant composition, and commonly regeneration processes (flocculation, distillation, extraction, hydrotreating, adsorption, etc.). The article introduced the adsorbents, such as clay, activated carbon, fly ash, natural polymer adsorbents and so on and new technologies (electrostatic adsorption) in detail. The overseas and domestic research status of adsorption regeneration were summarized and the merits and demerits of the adsorbents and adsorption technologies were summarized. Therefore, the problems and development trends of waste lubricant absorption regeneration in the future were proposed.

Key words: waste lubricant, adsorption regeneration, clay, activated carbon, fly ash

CLC Number:

TQ35
TQ9

Ruting XU, Ao WANG, Kang SUN. Research Progress in Absorption Regeneration of Waste Lubricant[J]. Biomass Chemical Engineering, 2021, 55(4): 59-65.

Figures/Tables 6

Table 1

Table 2

Table 3

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Table 5

Table 6

References 50

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样品 sample	运动黏度(40 ℃)/(mm²·s^-1) viscosity	闪点/℃ flash point	倾点/℃ pour point	密度/(g·cm^-3) density	总碱值/(mg·g^-1) total base value	含水量/% moisture content
新润滑油new lubricant	67.23	238	-39	0.853	6.43	0
废润滑油waste lubricant	51.44	196	< -36	0.846	5.82	< 0.5
酸处理白土吸附后的废润滑油 waste lubricant after adsorbing by acid treated clay	49.11	212	< -36	0.853	6.9	< 0.5
煅烧处理白土吸附后的废润滑油 waste lubrican after adsorbing by calcined clay	53.14	206	< -36	0.853	6.53	< 0.5

样品 sample	Fe	Cu	Pb	氧化产物 oxide	硝化产物 nitrate	硫化产物 sulfide	烟炱 soot
活性炭activated carbon	48.2	63.0	79.4	15.0	45.6	14.1	61.2
微乳液改性活性炭activated carbon modified by microemulsion	67.7	67.0	61.5	7.1	42.3	28.9	41.9

样品 sample	运动黏度(40 ℃)/(mm²·s^-1) viscosity	运动黏度(100 ℃)/(mm²·s^-1) viscosity	总酸值/(mg·g^-1) total acid value	机械杂质/% mechanical impurities	含水量/% moisture content
废润滑油waste lubricants	67	9.8	2.892	2.04	0.1724
改性粉煤灰吸附后的废润滑油 waste lubricant after modified fly ash adsorption	53	9.3	1.510	1.89	0.1428

吸附剂 adsorbent	脱色率/% decolorization rate	含沥青量/% asphaltene content	含Ca²⁺量/(mg·g^-1) Ca²⁺content	含Zn²⁺量/(mg·g^-1) Zn²⁺ content
无none	—	0.784	0.242	0.113
一级富里酸first grade fulvic acid	42.433	0.196	0.019	0.001
二级富里酸secondary fulvic acid	41.206	0.191	0.013	0.005
三级富里酸tertiary fulvic acid	40.423	0.286	0.005	0.002

样品¹⁾ sample	运动黏度(40 ℃)/(mm²·s^-1) viscosity	含水量/% moisture content	含灰分量/% ash	闪点/℃ flash point	倾点/℃ pour point	残炭/% carbon residue	色度 colour
新油fresh	131	0	0.463	242.5	-14	1.3549	0.042
废油used	38.3	1.5	0.952	178	-6	3.523	0.53
再生润滑油^a regenerated lubricant	85	0	0.483	238	-13.2	1.562	0.12
再生润滑油^b regenerated lubricant	80	0.28	0.495	225	-12	1.742	0.25
再生润滑油^c regenerated lubricant	75	0.30	0.505	228	-11.7	1.861	0.15
再生润滑油^d regenerated lubricant	76	0.14	0.477	231	-11.3	1.692	0.21

Research Progress in Absorption Regeneration of Waste Lubricant

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样品 sample	颜色 colour	运动黏度(40 ℃)/(mm²·s^-1)viscosity	闪点/℃ flash point	倾点/℃ pour point	水分/% moisture content	总酸值/(mg·g^-1) total acid value
废润滑油 waste lubricant	棕色，浑浊 brown, cloudy	355.3	238	-15	2.7	0.77
静电吸附再生后润滑油 recycled lubricant	浅棕色 light brown	315.7	249	-13	小于痕迹 less than the trace	0.72
新油标准 standard	透亮 bright	280~352	≥200	≤-9	小于痕迹 less than the trace	≤1

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