A process for improving foam tendency in waste oil refining process

A technology of waste engine oil and process, which is applied in the field of waste engine oil refining process, can solve the problems such as inability to achieve foam tendency, achieve outstanding economic benefits, realize industrialization, and simple preparation process

Inactive Publication Date: 2016-07-13
NINGBO YONGRUN PETROCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the existing waste engine oil refining process, some conventional processes such as distillation cutting, furfural refining and clay refining produce lubricating oil base oil, although most of the indicators meet the requirements, but in some high-speed gears, large-volume pumping Among rare earth engine oils, the base oil is required to have excellent foam characteristics, that is, when the foam tendency is required to be controlled within the range of <50ml, since waste engine oil contains a large amount of additives, its silicon content is relatively high, and it is limited by the existing waste oil. In the process of engine oil refining, the crude oil after distillation and cutting of waste engine oil is only refined by furfural and clay, and its silicon content is still as high as 150-300ppm, and the foam tendency is still above 350ml, which cannot meet the requirement of foam tendency <50ml

Method used

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  • A process for improving foam tendency in waste oil refining process

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Effect test

Embodiment 1

[0024] After the waste engine oil is distilled and cut, the kinematic viscosity at 40°C is 30mm 2 / s, an acid value of 0.3 mgKOH / g, and a crude oil with a silicon content of 180 ppm is used as the raw oil of this embodiment. In the reactor, feedstock oil at a temperature of 65°C and furfural at a temperature of 95°C were added at a mass ratio of 1:3, and fully contacted for 2 hours to obtain oil product I. Then the separated oil I was refined with white clay at 135°C for 120 minutes, the amount of white clay was 3% of the volume of oil I, the decolorizing power of white clay was 160, the particle size was 230 mesh, and the free acid was 0.15. After refining, use a plate and frame filter to filter to obtain oil product II. Then the oil product II obtained by filtration is passed through the adsorbent activated carbon to complete the adsorption and refining to obtain the oil product III. Finally, the obtained oil product III was further refined with clay at 135° C., the refini...

Embodiment 2

[0026] After the waste engine oil is distilled and cut, the kinematic viscosity at 40°C is 32mm 2 / s, the acid value is 0.3mgKOH / g, and the crude oil with a silicon content of 200ppm is used as the raw material oil of this embodiment. In the reactor, feedstock oil at a temperature of 65°C and furfural at a temperature of 95°C were added at a mass ratio of 1:3, and fully contacted for 2 hours to obtain oil product I. Then the separated oil I was refined with white clay at 135°C for 120 minutes, the amount of white clay was 3% of the volume of oil I, the decolorizing power of white clay was 180, the particle size was 250 mesh, and the free acid was 0.1. After refining, use a plate and frame filter to filter to obtain oil product II. Then the oil product II obtained by filtration is passed through the adsorbent activated carbon to complete the adsorption and refining to obtain the oil product III. Finally, the obtained oil product III was refined with clay again at 135° C., the...

Embodiment 3

[0028] After the waste engine oil is distilled and cut, the kinematic viscosity at 40°C is 33mm 2 / s, the acid value is 0.2mgKOH / g, and the crude oil with a silicon content of 235ppm is used as the raw material oil of this embodiment. In the reactor, feedstock oil at a temperature of 65°C and furfural at a temperature of 95°C were added at a mass ratio of 1:3, and fully contacted for 2 hours to obtain oil product I. Then the separated oil I was refined with white clay at 135°C for 120 minutes, the amount of white clay was 3% of the volume of oil I, the decolorizing power of white clay was 200, the particle size was 280 mesh, and the free acid was 0.1. After refining, use a plate and frame filter to filter to obtain oil product II. Then the oil product II obtained by filtration is passed through the adsorbent activated carbon to complete the adsorption and refining to obtain the oil product III. Finally, the obtained oil product III was refined with clay again at 135° C., the...

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Abstract

The invention relates to a process for improving foaming tendency of a waste oil refining process, the process mainly includes furfural refining, first carclazyte refining, adsorption refining and secondary carclazyte refining; a filtered oil product obtained by first refining is adsorbed and refined by an adsorbent, then carclazyte refining is performed, and after the refining, finished product oil is obtained by filtering. The specific process is as follows: in a reactor, raw material oil and furfural are proportionally added, after full contact reaction, an oil product I is obtained by separation, after the first carclazyte refining of the oil product I, an oil product II is obtained by filtering, the oil product II is adsorbed and refined by the adsorbent to obtain an oil product III, and after the secondary carclazyte refining of the oil product III, the finished product oil is obtained by filtering. The process can make silicon content of the finished product oil less than 2ppm and foaming tendency less than 50ml, so that excellent foam properties are shown.

Description

technical field [0001] The invention relates to a waste engine oil refining process, in particular to a process for improving foam tendency in the waste engine oil refining process. Background technique [0002] The development of waste engine oil refining technology has become more and more mature. The recovery of waste engine oil can not only protect the environment, but also greatly save and reuse these important resources. However, in the existing waste engine oil refining process, some conventional processes such as distillation cutting, furfural refining and clay refining produce lubricating oil base oil, although most of the indicators meet the requirements, but in some high-speed gears, large-volume pumping Among rare earth engine oils, the base oil is required to have excellent foam characteristics, that is, when the foam tendency is required to be controlled within the range of <50ml, since waste engine oil contains a large amount of additives, its silicon conte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/08
CPCC10G53/08C10G2300/1007
Inventor 周健勇孙明兰今伟范强韩剑飞
Owner NINGBO YONGRUN PETROCHEM TECH
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