Unlock instant, AI-driven research and patent intelligence for your innovation.

Process for producing low oil wax and high viscosity index base oils

A high-viscosity, oil-containing wax technology, which is applied in the treatment of hydrocarbon oil, petroleum industry, hydrocarbon oil treatment products, etc., can solve the problems of poor economic benefit and low product yield

Active Publication Date: 2021-08-06
CHINA PETROLEUM & CHEM CORP +1
View PDF20 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the invention is to overcome the problems of low product yield and poor economic benefit when using Fischer-Tropsch synthesis products to produce lubricating oil base oils in the prior art, and provide a method for simultaneously producing low-oil wax and high-viscosity index base oils. The method can increase the yield of isomerized dewaxed base oil, thereby improving the utilization efficiency of Fischer-Tropsch synthesis products

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Process for producing low oil wax and high viscosity index base oils
  • Process for producing low oil wax and high viscosity index base oils
  • Process for producing low oil wax and high viscosity index base oils

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] This example is used to illustrate the method for producing low oil content wax and high viscosity index base oil from Fischer-Tropsch synthetic wax provided by the present invention.

[0071] The >350°C distillate of Fischer-Tropsch synthetic wax is used as the raw material, and the properties of the raw material are shown in Table 1.

[0072] See Table 2 for the solvent deoiling conditions, properties of the dewaxed oil and the underwax oil of the >350°C fraction of the Fischer-Tropsch synthetic wax.

[0073] At a deoiling filtration temperature, the ratio of the refractive index of the deoiling solvent to the refractive index of the mixture of the liquid components in the raw oil and the deoiling solvent at the filtration temperature is 0.97.

[0074] Table 3 shows the reaction conditions of the first hydrofinishing, hydroisomerization and second hydrofinishing of the underwax oil and the properties of the second hydrofinishing products.

[0075] Table 4 shows the p...

Embodiment 2

[0077] This example is used to illustrate the method for producing low oil content wax and high viscosity index base oil from Fischer-Tropsch synthetic wax provided by the present invention.

[0078] The 350°C-400°C fraction of Fischer-Tropsch synthetic wax is used as the raw material, and the properties of the raw material are shown in Table 1.

[0079] See Table 2 for the solvent deoiling conditions, properties of dewaxed oil and underwax oil of the 350°C-400°C fraction of Fischer-Tropsch synthetic wax.

[0080] At a deoiling filtration temperature, the ratio of the refractive index of the deoiling solvent to the refractive index of the mixture of the liquid components in the raw oil and the deoiling solvent at the filtration temperature is 0.995.

[0081] See Table 3 for the reaction conditions and base oil properties of the first hydrofinishing, hydroisomerization and second hydrofinishing of waxy oil.

Embodiment 3

[0083] This example is used to illustrate the method for producing low oil content wax and high viscosity index base oil from Fischer-Tropsch synthetic wax provided by the present invention.

[0084] The 400°C-450°C distillate of Fischer-Tropsch synthetic wax is used as the raw material, and the properties of the raw material are shown in Table 1.

[0085] See Table 2 for the solvent deoiling conditions, properties of dewaxed oil and underwax oil of the 400°C-450°C fraction of Fischer-Tropsch synthetic wax.

[0086] At a deoiling filtration temperature, the ratio of the refractive index of the deoiling solvent to the refractive index of the mixture of the liquid components in the raw oil and the deoiling solvent at the filtration temperature is 0.99.

[0087] See Table 3 for the reaction conditions and base oil properties of the first hydrofinishing, hydroisomerization and second hydrofinishing of waxy oil.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
melting pointaaaaaaaaaa
melting pointaaaaaaaaaa
pour pointaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of petrochemical industry, and discloses a method for producing low-oil wax and high-viscosity index base oil, wherein the method comprises: (1) separating fractions whose distillation range is not less than 350°C from Fischer-Tropsch synthesis products (2) Under deoiling conditions, the fraction with a distillation range not less than 350°C is contacted with a deoiling solvent to perform solvent deoiling to obtain deoiled wax and waxy bottom oil; (3) wax bottom oil is subjected to an optional second First hydrofinishing, isomerization dewaxing and second hydrofinishing to obtain base oil. The method provided by the invention not only has the characteristics of high base oil yield, but also can simultaneously produce high-quality low-oil wax products.

Description

technical field [0001] The invention relates to a method for simultaneously producing low-oil wax and high-viscosity index base oil by using Fischer-Tropsch synthesis products as raw materials. Background technique [0002] The chain hydrocarbon organic compound produced by the Fischer-Tropsch synthesis method, which uses the synthesis gas produced by natural gas or coal and coke gasification as raw material, is called Fischer-Tropsch synthesis wax because of its high freezing point. [0003] Fischer-Tropsch synthetic waxes can be reprocessed to produce high value-added products. For example, US5834522 discloses a method of using Fischer-Tropsch synthesis products as raw materials to produce base oil through a hydroisomerization process. This technology first passes the Fischer-Tropsch synthesis products through a hydroisomerization device, and after an isomerization reaction occurs, the product Then it is distilled and cut to produce lubricating base oils with different vi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/14
CPCC10G67/14C10G2300/1037C10G2400/10
Inventor 管翠诗王玉章丁洛蔡晨陈国成彭东岳
Owner CHINA PETROLEUM & CHEM CORP