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Method for preparing bio lubricants through catalytic hydrogenation of biodiesel

A catalytic hydrogenation and biodiesel technology, which is applied in chemical instruments and methods, physical/chemical process catalysts, biofuels, etc., can solve the problems that cannot be directly used as lubricating oil, is easy to oxidize and decompose, and is unstable, and achieves good bioavailability Degradability, not easy to oxidize and decompose, and stable performance

Active Publication Date: 2016-12-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although fatty acid methyl esters have certain lubricating properties, they generally cannot be directly used as lubricating oil, lubricating oil base oil or lubricating oil additives. This is because there are two main problems: (1) unsaturated double bonds exist in fatty acid methyl esters, Stable, easy to oxidative decomposition

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] This example illustrates the preparation and activation process of copper-zinc oxide catalysts with n(Cu) / n(Zn) being 2 / 1 respectively.

[0050] The preparation process of catalyst: first, 36.4g copper nitrate trihydrate (Beijing Chemical Reagent Company, analytical pure) and 22.4g zinc nitrate hexahydrate (Beijing Chemical Reagent Company, analytical pure) are dissolved in 200mL deionized water, stir evenly, water bath Control the temperature at 60°C; stir while adding 1.0mol / L Na 2 CO 3 Solution, the pH value of the solution reaches 6.8 during the precipitation process, stop adding Na 2 CO 3 solution, stop stirring; statically age in a water bath at 60°C for 2.0h; filter with suction and wash several times until the washing liquid is neutral; dry the precipitate at 110°C for 2.0h to obtain a light blue dry powder; Dry the powder in a muffle furnace, program the temperature up to 450° C. within 3.0 h, and continue calcining for 24 h to prepare a copper-zinc oxide ca...

Embodiment 2

[0053] This example illustrates the preparation and activation process of copper-zinc oxide catalysts with n(Cu) / n(Zn) being 1 / 1 respectively.

[0054] The preparation process of catalyst: first, 60.4g copper nitrate trihydrate (Beijing Chemical Reagent Company, analytical pure) and 74.4g zinc nitrate hexahydrate (Beijing Chemical Reagent Company, analytical pure) are dissolved in 200mL deionized water, stir evenly, water bath Control the temperature at 60°C; stir while adding 1.0mol / L Na 2 CO 3 Solution, the pH value of the solution reaches 6.8 during the precipitation process, stop adding Na 2 CO 3 solution, stop stirring; statically age in a water bath at 60°C for 3.0h; filter with suction and wash several times until the washing solution is neutral; dry the precipitate at 110°C for 2.0h to obtain a light blue dry powder; Dry the powder in a muffle furnace, program the temperature to 450° C. within 3.0 h, and continue calcining for 24 h to prepare a copper-zinc oxide cat...

Embodiment 3

[0057] This example illustrates the preparation and activation process of a copper-zinc oxide catalyst with n(Cu) / n(Zn) being 1 / 2 respectively.

[0058] The preparation process of the catalyst: first, 18.1g copper nitrate trihydrate (Beijing Chemical Reagent Company, analytically pure) and 45.0g zinc nitrate hexahydrate (Beijing Chemical Reagent Company, analytically pure) were dissolved in 200mL deionized water, stirred evenly, and placed in a water bath Control the temperature at 60°C; stir while adding 1.0mol / L Na 2 CO 3 When the pH value of the solution reaches 7.0 during the solution precipitation, stop adding Na 2 CO 3 solution, stop stirring; statically age in a water bath at 60°C for 1.0h; filter with suction and wash several times until the washing solution is neutral; dry the precipitate at 110°C for 2.0h to obtain a light blue dry powder; Dry the powder in a muffle furnace, heat up to 470° C. within 3.0 hours, and continue calcining for 24 hours to prepare a copp...

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Abstract

The invention relates to a method for preparing bio lubricants through catalytic hydrogenation of biodiesel. The method comprises the following steps of enabling the biodiesel to be in contact with a catalytic hydrogenation catalyst under the condition of a catalytic hydrogenation reaction so as to generate a hydrogenation saturation reaction and an ester-interchange reaction, and enabling reaction effluents to be subjected to reduced pressure distillation, so as to obtain bio lubricant components. The catalytic hydrogenation catalyst contains a copper compound, a zinc compound and aid components which can be selectively added, wherein the aid components are selected from one or more of aluminum compounds, zirconium compounds, magnesium compounds, and chromium compounds. Through the adoption of the method provided by the invention, the bio lubricant components with stable performance can be obtained. The method provided by the invention is simple in technology, and target products are good in selectivity and high in yield. In addition, the bio lubricant components are from the biodiesel prepared from animal and vegetable fat or waste fat and have favorable biodegradability.

Description

technical field [0001] The invention relates to a method for preparing biological lubricating oil through catalytic hydrogenation of biodiesel. Background technique [0002] Most traditional lubricating oils are produced from mineral oil, which is a non-renewable resource. About 50% of lubricating oil enters the environment through volatilization and leakage during use, and the loss of hydraulic oil during use is as high as 70% to 80%. Traditional lubricating oil has poor biodegradability in the natural environment, and the degradation rate is only 10% to 30%. It can stay in water and soil for a long time, causing serious pollution to the environment. With the depletion of resources and the enhancement of environmental awareness, people began to turn their attention to the development of environmentally friendly and renewable bio-lubricants. It is urgent to develop lubricating oils with advantageous thermal stability and low temperature performance, easy biodegradation and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11C3/12C11C3/10C10M105/34B01J23/80B01J23/86
CPCY02E50/10
Inventor 张伟陈艳凤王海京杜泽学
Owner CHINA PETROLEUM & CHEM CORP
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