CN113969179B - High-viscosity furfural refined extract oil and preparation method thereof - Google Patents

Abstract

The invention discloses high-viscosity furfural refined extract oil and a preparation method thereof, belonging to the field of petrochemical industry. After a proper amount of butyl rubber is added into the refined extraction oil of the high-viscosity furfural, the production cost of the product is not greatly influenced, and meanwhile, the viscosity of the extraction oil can be effectively improved to 1.5-4 times of the original viscosity, so that the properties of the vacuum residue oil are fully improved after the prepared refined extraction oil of the furfural is mixed with asphalt raw material components such as the vacuum residue oil, and finally, the prepared road asphalt can reach the road asphalt standard without adding a modifier. The invention also discloses a preparation method of the high-viscosity furfural refined extract oil and application of the high-viscosity furfural refined extract oil in preparation of road asphalt.

Description

High-viscosity furfural refined extract oil and preparation method thereof

Technical Field

The invention relates to the field of petrochemical industry, and in particular relates to high-viscosity furfural refined extract oil and a preparation method thereof

Background

The furfural refined extract oil (also called furfural extract oil) is a byproduct produced in the process of the lubricating oil furfural refining technology, the furfural is used for separating the non-ideal substances in the lubricating oil materials, including fraction oil materials and residue lubricating oil materials of solvent deasphalting, such as colloid, asphaltene, middle aromatic hydrocarbon and heavy aromatic hydrocarbon of short side chains, polycyclic and heterocyclic compounds, and the products are divided into furfural refined extract oil with two lines, three lines, four lines and light lines according to the raw materials.

In the prior art, the furfural refined extract oil is mainly used for blending oil of fuel oil, blending components of road asphalt, solvent deasphalting raw materials, softeners for rubber industry and other functional reagents in the chemical field; for example, CN107541248A discloses an environment-friendly rubber filling oil and a preparation method thereof, in the scheme, furfural extract oil is used for producing printing ink solvent oil; CN105419764B discloses a high temperature and high salt resistant furfural extract oil sulfonate system and a preparation method thereof, and the scheme uses furfural extract oil to prepare a surfactant; CN107699300A discloses a quenching and tempering oil for ethylene cracking, the components of the product contain two-line or three-line reduced extract oil.

In each furfural refined extract oil, the reduced trilinear furfural refined extract oil has insufficient comprehensive performance (especially the defect of low viscosity) due to different components, although the modified asphalt is applied to the preparation of road asphalt, most of the products are modified asphalt (for example, SBS modified asphalt) which needs to be modified by adding a modifier to a matrix asphalt to meet the standard of the road asphalt, the reduced trilinear furfural extract oil in the components only serves as a compatilizer between the matrix asphalt and the modifier, the content is low, the modifier does not change the property of the reduced trilinear furfural extract oil, and the modified trilinear furfural extract oil cannot be fully utilized.

Disclosure of Invention

Based on the defects of the prior art, the invention aims to provide the high-viscosity furfural refined extract oil which has higher normal-temperature and high-temperature viscosity, can be effectively applied to preparing road asphalt and serves as a blending soft component, and the prepared asphalt can reach the standard of the road asphalt without being modified by a modifier.

In order to achieve the purpose, the invention adopts the technical scheme that:

the high-viscosity furfural refined extract oil consists of the following components in parts by weight: 97.5 to 99.5 parts of refined extract oil of the three-wire furfural and 0.5 to 2.5 parts of butyl rubber.

Through experimental research, the inventor of the application finds that the refined extract oil of the three-way furfural has high compatibility but low viscosity, and the common asphalt prepared by blending the refined extract oil with vacuum residue, propylene deasphalting (common asphalt preparation raw material) and the like can not reach the standard of road asphalt at all; when a proper amount of butyl rubber is added into the refined extraction oil of the three-way furfural, the production cost of the product is not greatly influenced, meanwhile, the viscosity of the extraction oil can be effectively improved to 1.5-4 times of the original viscosity, the properties of the vacuum residue oil are fully improved after the prepared refined extraction oil of the furfural is mixed with the components of the vacuum residue oil and the like, and finally the prepared road asphalt can reach the road asphalt standard without adding a modifier.

Experiments show that the more the addition amount of the butyl rubber is, the higher the viscosity of the refined extract oil of the three-way furfural is increased, but the production cost of the product is gradually increased, and the prepared refined extract oil of the high-viscosity furfural has moderate production cost and obvious viscosity increase under the preferable proportion.

Preferably, the preparation method of the refined extract oil of the trilinear furfural comprises the following steps: and refining the reduced three-line distillate oil obtained by atmospheric and vacuum distillation of the intermediate base crude oil by furfural.

The method is characterized in that the three-way reducing distillate oil is a basic raw material for producing the lubricating oil, furfural refining is adopted as one process in the processes for producing the lubricating oil, the three-way reducing distillate oil is used for producing the three-way reducing furfural refined oil for preparing the lubricating oil after being refined by furfural, and the residual impurity-rich component is the three-way reducing furfural refined extract oil, and the modified part is used for preparing the road asphalt, so that the utilization value of the road asphalt can be effectively improved, and the production cost of the road asphalt is fully reduced.

Preferably, the aromatic hydrocarbon content of the refined extract oil of the reduced furfural is more than or equal to 80%.

Preferably, the mooney viscosity of the butyl rubber is 49 to 56MU.

The Mooney viscosity is measured at ML1+8, 125 ℃.

Preferably, the percentage content of volatile components in the butyl rubber is less than or equal to 0.3 percent, the percentage content of ash is less than or equal to 0.3 percent, and the unsaturation degree of the butyl rubber is 1.5-1.9 percent.

The invention also aims to provide a preparation method of the high-viscosity furfural refined extract oil, which comprises the following steps:

(1) Weighing the refined extract oil of the three-way furfural and the butyl rubber according to the proportion, then putting the refined extract oil of the three-way furfural into a blending tank and heating to 140-180 ℃;

(2) And (2) cutting butyl rubber into blocks, adding the blocks into the blending tank in the step (1), stirring for 6-10 h, and cooling to obtain the high-viscosity furfural refined extract oil.

The preparation process of the high-viscosity furfural refined extract oil is simple, and industrial large-scale production can be realized.

The invention further aims to provide application of the high-viscosity furfural refined extract oil in preparation of road asphalt.

The high-viscosity furfural refined extract oil has high viscosity and good compatibility, and an asphalt product obtained by mixing the high-viscosity furfural refined extract oil with raw materials for preparing asphalt, such as vacuum residue, propane deasphalted asphalt and the like can meet the standard of road asphalt without adding a modifier.

The invention has the beneficial effects that: the invention provides a high-viscosity furfural refined extract oil, which not only has little influence on the production cost of the product, but also can effectively improve the viscosity of the extract oil to 1.5-4 times of the original viscosity after a proper amount of butyl rubber is added into the refined extract oil for reducing the three-way furfural, so that the properties of the reduced pressure residual oil can be fully improved after the prepared furfural refined extract oil is mixed with asphalt raw material components such as the reduced pressure residual oil, and finally the prepared road asphalt can reach the road asphalt standard without adding a modifier. The invention also provides a preparation method of the high-viscosity furfural refined extract oil and application of the high-viscosity furfural refined extract oil in preparation of road asphalt.

Detailed Description

For better illustrating the objects, technical solutions and advantages of the present invention, the present invention will be further described with reference to specific examples, which are intended to be understood in detail, but not intended to limit the present invention.

Unless otherwise specified, the raw materials used in the following examples are all commercially available common products.

The preparation method of the refined extract oil by reducing the furfural of the three-wires comprises the following steps: the intermediate base crude oil is obtained by refining three-way distillate oil obtained by atmospheric and vacuum distillation through furfural; the aromatic hydrocarbon content of the refined extract oil of the three-way furfural reduction is 85 percent.

The Mooney viscosity of the butyl rubber is 51MU under the conditions of ML1+8 and 125 ℃; the butyl rubber contains 0.3 percent of volatile components, 0.3 percent of ash and 1.7 percent of unsaturation.

Examples 1 to 5, comparative example 1

The component formulas of the products of the examples and comparative examples of the high-viscosity furfural refined extract oil are shown in the table 1.

The preparation method of the polypropylene composition described in each example is the same, and comprises the following steps:

(1) Weighing the refined extract oil obtained by reducing the three-way furfural and butyl rubber in proportion, then putting the refined extract oil obtained by reducing the three-way furfural into a blending tank and heating to 140 ℃;

(2) And (2) cutting butyl rubber into small blocks, adding the small blocks into the blending tank in the step (1), heating to 160 ℃, stirring for 8 hours until the small blocks are melted, and cooling to obtain the high-viscosity furfural refined extract oil.

TABLE 1

Component (in parts)	Refined extract oil for reducing furfural in three-way	Butyl rubber
			Example 1	99.5	0.5
Example 2	99	1
			Example 3	98.5	1.5
Example 4	98	2
			Example 5	98.5	2.5
Comparative example 1	100	0

Effect example 1

The products of examples 1 to 5 and comparative example 1 were tested for viscosity at 60 ℃ and 135 ℃ respectively, and the results are shown in Table 2.

TABLE 2

Viscosity of the oil	Kinematic viscosity at 60 ℃ (mPa/s)	Kinematic viscosity at 135 ℃ (mPa/s)
			Example 1	335.5	13.5
Example 2	467.0	18
			Example 3	479.5	20.0
Example 4	616.7	24.5
			Example 5	782.5	30.0
Comparative example 1	215.5	7.0

From table 2, compared with the blank control of the refined extracted oil of the trinuclear furfural reduction without adding butyl rubber in the comparative example 1, the kinematic viscosity of the obtained product at 60 and 135 ℃ is gradually increased along with the increase of the addition amount of the butyl rubber in the examples 1 to 5, and the maximum viscosity can reach about 4 times of the viscosity of the original refined extracted oil of the trinuclear furfural reduction.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims (4)

1. The high-viscosity furfural refined extract oil is characterized by comprising the following components in parts by weight: 97.5-99.5 parts of refined extract oil of the three-wire furfural and 0.5-2.5 parts of butyl rubber; the preparation method of the refined extract oil for reducing the furfural in three lines comprises the following steps: the intermediate base crude oil is obtained by furfural refining of three-way-reduced distillate oil obtained after atmospheric and vacuum distillation, and the aromatic hydrocarbon content of the three-way-reduced furfural refined extract oil is more than or equal to 80 percent; the Mooney viscosity of the butyl rubber is 49-56 MU under ML1+8 and 125 ℃.

2. The high-viscosity refined extract oil of furfural as set forth in claim 1 wherein the butyl rubber has a percentage of volatile components of 0.3% or less, a percentage of ash of 0.3% or less, and an unsaturation degree of 1.5 to 1.9% or less.

3. The method for preparing the high-viscosity furfural refined extract oil according to any one of claims 1 to 2, characterized by comprising the steps of:

(1) Weighing the refined extract oil of the three-way furfural and the butyl rubber according to the proportion, then putting the refined extract oil of the three-way furfural into a blending tank and heating to 140-180 ℃;

(2) And (2) cutting butyl rubber into blocks, adding the blocks into the blending tank in the step (1), stirring for 6-10 h, and cooling to obtain the high-viscosity furfural refined extract oil.

4. Use of the high-viscosity furfural refined extract oil as claimed in any one of claims 1 to 2 in the production of road asphalt.