CN109207182B - Method for producing road asphalt by deasphalted oil - Google Patents
Method for producing road asphalt by deasphalted oil Download PDFInfo
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- CN109207182B CN109207182B CN201811173639.4A CN201811173639A CN109207182B CN 109207182 B CN109207182 B CN 109207182B CN 201811173639 A CN201811173639 A CN 201811173639A CN 109207182 B CN109207182 B CN 109207182B
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- oil
- asphalt
- deasphalted oil
- deasphalted
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C3/00—Working-up pitch, asphalt, bitumen
- C10C3/06—Working-up pitch, asphalt, bitumen by distillation
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Abstract
The invention discloses a method for producing road asphalt by deasphalted oil, which comprises the following steps: blending residual oil obtained by distilling crude petroleum oil and the minus four-line distillate oil as raw materials; the residual oil is non-paraffin-based vacuum residual oil; performing solvent deasphalting treatment on the raw materials to obtain deoiled asphalt and deasphalted oil, and taking heavy deasphalted oil with the carbon residue of more than or equal to 3.5 percent in the deasphalted oil; the heavy deasphalted oil which meets the performance requirements of No. 110, No. 130 and No. 160 in the technical Specification of construction of asphalt pavements of highways of the Ministry of transportation is taken as a product; and blending the heavy deasphalted oil which does not meet the requirements with the hard vacuum residue to obtain the product. The asphalt prepared by the invention meets No. 110, No. 130 and No. 160 asphalt of technical Specification for construction of asphalt road surfaces for highways (JTG F40-2004) of Ministry of transportation, thereby improving the utilization value of deasphalted oil and widening the production raw materials of asphalt.
Description
Technical Field
The invention relates to the field of petroleum product processing, in particular to a method for producing road asphalt by deasphalted oil.
Background
Solvent deasphalting is a petroleum refining process for processing heavy oil, and the process is to extract the heavy oil such as atmospheric/vacuum residue oil by using hydrocarbons such as propane and butane as solvents. The raffinate is deoiled asphalt which can be used as road asphalt, the extract is deasphalted oil which is divided into light deasphalted oil (less than 3.5%) and heavy deasphalted oil (more than or equal to 3.5%) according to the residual carbon content. Light deasphalted oils are typically used as heavy lubricant oil feedstocks and heavy deasphalted oils are typically used as catalytic cracking feedstocks or coking feedstocks.
With the increasing degree of heaviness and deterioration of crude oils in recent years, there have been fewer residual feedstocks suitable for processing light deasphalted oils. In order to broaden the application of poor-quality residual oil raw materials, many production enterprises are exploring to mix furfural extract oil, catalytic slurry oil and the like in residual oil so as to improve the yield of deasphalted oil and improve the quality of deasphalted asphalt.
The deoiled asphalt obtained by the solvent deasphalting process is generally in the standard range of No. 30-90 asphalt, and the grade of high grade asphalt is less. The asphalt nos. 110, 130 and 160 are generally used as base asphalt for modified asphalt such as emulsified asphalt, cutback asphalt, modified asphalt and the like, except that they can be directly used for road pavement in low-temperature cold regions.
The process of extracting oil and the like from the residual oil doped with furfural can obviously reduce the viscosity of the residual oil, is beneficial to improving the feeding of a device and improving the yield of the deasphalted oil; however, different extraction oils have different degrees of influence on the viscosity of the same residual oil, which results in the need to adjust some important process parameters of the device, and frequent parameter adjustment is not beneficial to the stable operation of the device; moreover, after the yield of the deasphalted oil is improved, the heavy deasphalted oil is mainly used as a raw material of a coking or catalytic cracking device and is not actually improved.
Disclosure of Invention
The invention aims to provide a method for producing road asphalt by deasphalted oil, and all indexes of the asphalt prepared by the method meet the requirements of No. 110, No. 130 and No. 160 hard road asphalt of technical Specification for asphalt pavement construction of highways of Ministry of transportation (JTG-F402004).
The purpose of the invention can be realized by the following technical scheme:
a method for producing road asphalt by deasphalted oil comprises the following steps:
1) blending residual oil obtained by distilling crude petroleum oil and the minus four-line distillate oil as raw materials; the residual oil is non-paraffin-based vacuum residual oil;
2) performing solvent deasphalting treatment on the raw material in the step 1) to obtain deoiled asphalt and deasphalted oil, and taking 3.5 percent of heavy deasphalted oil from residual carbon in the deasphalted oil;
3) for the preparation method of the No. 110, No. 130 and No. 160 road asphalt obtained in the step 2), the heavy deasphalted oil meeting the performance requirements of No. 110, No. 130 and No. 160 in the technical Specification for the construction of the asphalt pavement for the road of the Ministry of transportation is taken as a product;
4) blending the heavy deasphalted oil which does not meet the requirements in the step 3) with the hard vacuum residue oil to obtain the product.
Preferably, the mixing mass ratio of the minus four-line distillate oil and the residual oil in the step 1) is 20-35: 65-80.
Preferably, the solvent for the solvent deasphalting treatment in the step 2) is propane.
Preferably, the hard vacuum residue in step 4) is a non-paraffin-based vacuum residue with a penetration degree of 10-60/0.1 mm.
Preferably, the blending ratio of the heavy deasphalted oil to the hard vacuum residue in the step 4) is 1: 0.33-7.
The petroleum crude oil can be classified into three types of paraffin-based crude oil, naphthenic base crude oil and intermediate base crude oil according to composition classification, wherein the paraffin-based crude oil has higher paraffin content, and the performance of a finished product is poorer if the paraffin-based crude oil is used as a raw material, so that the requirements of the invention cannot be met.
Compared with the prior art, the invention has the following beneficial effects:
1) the invention uses the heavy deasphalted oil with lower added value originally to produce the high-grade road asphalt, thereby improving the utilization value of the high-grade road asphalt.
2) Compared with furfural extract oil, catalytic slurry oil and the like, the blended four-line distillate oil is closer to the property of vacuum residue oil, reduces the times of adjusting the parameters of the device and is more beneficial to the stable operation of the device.
Detailed Description
The following examples further illustrate the invention so that those skilled in the art may better understand it and practice it, but the examples are not intended to limit the invention.
Example 1
1) The crude oil of Forkline obtained by processing British forties crude oil through atmospheric/vacuum distillation and the vacuum residue obtained by subjecting Aceman crude oil to atmospheric/vacuum distillation are mixed according to the weight ratio of 20: 80 to obtain raw materials;
2) feeding the mixed raw materials into a propane deasphalting device to obtain light deasphalted oil and heavy deasphalted oil;
3) and selecting heavy deasphalted oil meeting the requirements of No. 110, No. 130 and No. 160 road asphalt as a product.
Example 2
1) Mixing Columbia Waascharya crude oil and Ectoid crude oil according to a ratio of 1:1, and processing the crude oil by atmospheric/vacuum distillation to obtain crude oil, and performing atmospheric/vacuum distillation to obtain crude oil, wherein the crude oil is mixed with crude oil of Saudi light crude oil, and the obtained residual oil is mixed according to a ratio of 35:65 to obtain raw materials;
2) feeding the mixed raw materials into a propane deasphalting device to obtain light deasphalted oil and heavy deasphalted oil;
3) and selecting heavy deasphalted oil meeting the requirements of No. 110, No. 130 and No. 160 road asphalt as a product.
Example 3
1) Mixing Saite light crude oil and Saite medium crude oil according to the proportion of 1:1, and mixing the minus four line distillate oil obtained by atmospheric/vacuum distillation processing with residual oil obtained by atmospheric/vacuum distillation of the Saite light crude oil according to the proportion of 24:76 to obtain a raw material;
2) feeding the mixed raw materials into a propane deasphalting device; obtaining light deasphalted oil and heavy deasphalted oil;
3) and selecting heavy deasphalted oil meeting the requirements of No. 110, No. 130 and No. 160 road asphalt as a product.
Example 4
1) Mixing Columbia Waascharya crude oil and Ectoid crude oil according to a ratio of 1:1, and processing the crude oil by atmospheric/vacuum distillation to obtain crude oil, and performing atmospheric/vacuum distillation to obtain crude oil, wherein the crude oil is mixed with crude oil of Saudi light crude oil, and the obtained residual oil is mixed according to a ratio of 35:65 to obtain raw materials;
2) feeding the mixed raw materials into a propane deasphalting device to obtain light deasphalted oil and heavy deasphalted oil;
3) mixing the heavy deasphalted oil obtained in the step 2) with the Ecuador Orrunt crude oil with the penetration degree of 60/0.1mm and the Brazilian Ottola crude oil according to the proportion of 1:1 to obtain vacuum residue, and blending the vacuum residue with the Brazilian Ottola crude oil according to the proportion of 3:7 to obtain the product.
Example 5
1) Mixing Columbia Waascharya crude oil and Ectoid crude oil according to a ratio of 1:1, and processing the crude oil by atmospheric/vacuum distillation to obtain crude oil, and performing atmospheric/vacuum distillation to obtain crude oil, wherein the crude oil is mixed with crude oil of Saudi light crude oil, and the obtained residual oil is mixed according to a ratio of 35:65 to obtain raw materials;
2) feeding the mixed raw materials into a propane deasphalting device; obtaining light deasphalted oil and heavy deasphalted oil;
3) mixing the heavy deasphalted oil obtained in the step 2) with the Lanzhou heavy crude oil and the Iransou crude oil with the penetration degree of 50/0.1mm according to the proportion of 2:3 to obtain vacuum residue, and mixing the vacuum residue with the heavy deasphalted oil and the Iransou crude oil according to the proportion of 1:1 to obtain the product.
The products obtained in examples 1 to 5 were subjected to physicochemical experiments, and the test standards were as described in "technical Specification for asphalt pavement construction for highways of Ministry of transportation", and are shown in Table 1
Table 1 analysis of properties of examples
| Numbering | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Penetration (25 deg.C)/0.1 mm | 114 | 126 | 154 | 101 | 123 |
| PI value | -0.91 | -1.08 | -1.40 | -1.22 | -1.01 |
| Softening point/. degree.C | 44.5 | 43.5 | 40.0 | 44.5 | 42.0 |
| Ductility (10 ℃ C.)/cm | >100 | >100 | >100 | >100 | >100 |
| Ductility (15 ℃) per cm | >100 | >100 | >100 | >100 | >100 |
| Dynamic viscosity/pas at 60 DEG C | 129 | 107 | 94 | 135 | 101 |
| Content of wax/%) | 1.7 | 1.7 | 2.0 | 2.1 | 1.9 |
| Flash point/. degree.C | >300 | 289 | 271 | >300 | >300 |
| Solubility/%) | 99.85 | 99.76 | 99.60 | 99.91 | 99.64 |
| Mass change/%) | +0.13 | -0.06 | -0.13 | -0.033 | +0.07 |
| Penetration ratio/%) | 58.4 | 62.8 | 54.3 | 56.0 | 56.4 |
| Residual ductility (10 ℃ C.)/cm | 14.3 | 26.2 | 18.9 | 12.2 | 15.7 |
| Residual ductility (15 ℃ C.)/cm | 64.3 | >100 | >100 | 66.0 | 67.1 |
| Product brand | 110 | 130 | 160 | 110 | 130 |
Experimental results show that all indexes of the asphalt prepared by the invention meet the requirements of No. 110, No. 130 and No. 160 hard road asphalt of technical Specification for asphalt pavement construction of highways of the Ministry of transportation (JTG-F402004).
The above-described embodiments of the present invention are not intended to limit the scope of the present invention, and the embodiments of the present invention are not limited thereto, and various other modifications, substitutions and alterations can be made to the above-described structure of the present invention without departing from the basic technical concept of the present invention as described above, according to the common technical knowledge and conventional means in the field of the present invention.
Claims (3)
1. The method for producing the road asphalt by using the deasphalted oil is characterized by comprising the following steps of:
1) blending residual oil obtained by distilling crude petroleum oil and the minus four-line distillate oil as raw materials; the residual oil is non-paraffin-based vacuum residual oil;
2) performing solvent deasphalting treatment on the raw material in the step 1) to obtain deoiled asphalt and deasphalted oil, and taking heavy deasphalted oil with the carbon residue of more than or equal to 3.5% in the deasphalted oil;
3) taking the heavy deasphalted oil meeting the performance requirements of No. 110, No. 130 and No. 160 in the technical Specification for constructing the asphalt pavement of the highway of the Ministry of transportation obtained in the step 2) as a product;
4) blending the heavy deasphalted oil which does not meet the performance requirement in the step 3) with hard vacuum residue oil to obtain a product;
the mixing mass ratio of the minus four-line distillate oil and the residual oil in the step 1) is 20-35: 65-80;
the hard vacuum residue in the step 4) is non-paraffin base vacuum residue with the penetration degree of 10-60/0.1 mm.
2. The process for producing road asphalt from deasphalted oil according to claim 1, characterized in that: the solvent for the solvent deasphalting treatment in the step 2) is propane.
3. The process for the production of road asphalt from deasphalted oil according to claim 1 or 2, characterized in that: in the step 4), the blending ratio of the heavy deasphalted oil to the hard vacuum residue is 1 in parts by weight: 0.33-7.
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| CN114163164B (en) * | 2020-09-11 | 2023-03-24 | 中国石油化工股份有限公司 | Color-paving cementing material preparation method, color-paving cementing material prepared by same and application of color-paving cementing material |
| CN113969183B (en) * | 2021-10-27 | 2023-06-16 | 中国石油化工股份有限公司 | Combined asphalt and preparation method thereof |
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