Method for preparing heavy traffic road asphalt based on heavy-extracted oil from three-line reduction line and heavy traffic road asphalt

Abstract

The present invention relates to the field of road asphalt, and specifically to a method for preparing heavy traffic road asphalt based on three-line heavy extraction oil and heavy traffic road asphalt. Specifically, the method for preparing heavy traffic road asphalt comprises the following steps: S1: subjecting intermediate base crude oil to propane deasphalting treatment to obtain deoiled asphalt; and subjecting three-line distillate oil to furfural refining treatment to obtain three-line heavy extraction oil; S2: in the absence of additives, blending the deoiled asphalt with the three-line heavy extraction oil to obtain heavy traffic road asphalt; in step S2, the total weight of the deoiled asphalt and the three-line heavy extraction oil to be blended is 100 parts by weight, wherein the deoiled asphalt accounts for 70-80 parts by weight and the three-line heavy extraction oil accounts for 20-30 parts by weight. The method provided by the present invention can produce heavy traffic road asphalt whose quality meets the AH-70 or AH-90 specification requirements of GB / T15180-2010.

Description

Technical Field

[0001] The present invention relates to the field of road asphalt, and in particular to a method for preparing heavy-traffic road asphalt based on heavy-extracted oil extracted from a three-line reduction line, and the heavy-traffic road asphalt. Background Art

[0002] Intermediate-base crude oil is a type of crude oil with properties between paraffin-based crude oil and naphthenic crude oil. It is usually used to produce light deasphalted oil and heavy deasphalted oil through propane deasphalting. Its by-product, deoiled asphalt, has high hardness and poor low-temperature performance and cannot be directly shipped as road asphalt. It is mainly used to prepare construction asphalt or sold as fuel oil, with low economic benefits.

[0003] The third-line distillate oil is lighter than the fourth-line distillate oil. It is the oil produced by the crude oil vacuum distillation tower. The flash point (opening) is ≥220℃ and the viscosity (100℃) is generally 6.2-7.2mm 2 / s, commonly used in the production of lubricating oil, the heavy-extracted oil from the third-line distillate is a by-product produced in the process of producing lubricating oil by refining the third-line distillate oil with furfural.

[0004] CN114015247A discloses an asphalt based on furfural extracted oil and its preparation method. However, the method also requires the addition of butyl rubber to the furfural refined extracted oil, which greatly increases the cost of preparing heavy traffic road asphalt. Summary of the Invention

[0005] The purpose of the present invention is to overcome the defect in the prior art that other additives need to be added to prepare heavy traffic road asphalt based on the heavy extraction oil of the three-line reduction line, and to provide a method for preparing heavy traffic road asphalt based on the heavy extraction oil of the three-line reduction line and heavy traffic road asphalt.

[0006] In order to achieve the above object, the present invention provides a method for preparing heavy traffic road asphalt based on the heavy extraction oil of the three-line reduction line, which is characterized by comprising the following steps:

[0007] S1: performing propane deasphalting on the intermediate base crude oil to obtain deoiled asphalt; and

[0008] The distillate oil from the third-line reduction is subjected to furfural refining treatment to obtain the third-line reduction heavy-extracted oil;

[0009] S2: blending the deoiled asphalt with the heavy-extracted oil from the three-line reduction process without any additives to obtain heavy-traffic road asphalt;

[0010] In step S1, the conditions of the propane deasphalting treatment are controlled so that the saturated hydrocarbon content of the deoiled asphalt is 5wt%-10wt%, the aromatic hydrocarbon content of the deoiled asphalt is 43wt%-47wt%, the asphaltene content of the deoiled asphalt is 45wt%-51wt%, and the needle penetration of the deoiled asphalt is 91 / 10mm-121 / 10mm;

[0011] In step S1, the furfural refining treatment conditions are controlled so that the saturated hydrocarbon content of the three-line heavy-extracted oil is 10wt%-15wt%, the aromatic hydrocarbon content of the three-line heavy-extracted oil is 70wt%-78wt%, the colloid content of the three-line heavy-extracted oil is 11wt%-17wt%, the asphaltene content of the three-line heavy-extracted oil is 0.3wt%-1wt%, and the kinematic viscosity of the three-line heavy-extracted oil at 100°C is 22mm 2 .s -1 -27mm 2 .s -1 ;

[0012] In step S2, the total weight of the deoiled asphalt and the triplex-reduced heavily extracted oil subjected to the blending treatment is 100 parts by weight, wherein the deoiled asphalt accounts for 70-80 parts by weight and the triplex-reduced heavily extracted oil accounts for 20-30 parts by weight.

[0013] Preferably, in step S1, the conditions of the propane deasphalting treatment are controlled so that the softening point of the deoiled asphalt is 65°C-70°C.

[0014] Preferably, in step S1, the conditions of the propane deasphalting treatment are controlled so that the wax content of the deoiled asphalt is not higher than 1.8 wt%.

[0015] Preferably, in step S1, the furfural refining treatment conditions are controlled so that the wax content of the three-line depleted oil is not higher than 3.5 wt%.

[0016] Preferably, in step S1, the furfural refining treatment step includes:

[0017] S11: extracting the minus three-line distillate oil and the furfural in an extraction tower, wherein the minus three-line distillate oil is fed from the lower part of the extraction tower, and the furfural is fed from the upper part of the extraction tower, and the feed weight ratio of the minus three-line distillate oil to the furfural is 1:(1.8-2.8);

[0018] S12: After the extracted oil produced at the bottom of the extraction tower is subjected to sedimentation treatment, the lower layer liquid is separated to obtain the three-line-reduced heavy extracted oil.

[0019] Preferably, in step S11, the top temperature of the extraction tower is 113° C.-117° C., the bottom temperature is 83° C.-87° C., and the bottom pressure is 0.5 MPa-0.9 MPa.

[0020] Preferably, in step S12, the temperature of the sedimentation treatment is not greater than 47° C., the pressure is 0.2 MPa-0.8 MPa, and the sedimentation time is 15 min-30 min.

[0021] Preferably, in step S1, the flash point of the oil extracted from the triple-line extraction is 235°C-245°C.

[0022] Preferably, in step S2, the total weight of the deoiled asphalt and the triplex-reduced heavily extracted oil subjected to the blending treatment is 100 parts by weight, wherein the deoiled asphalt accounts for 70-75 parts by weight and the triplex-reduced heavily extracted oil accounts for 25-30 parts by weight.

[0023] Preferably, in step S2, the temperature of the blending treatment is 120°C-140°C, and the blending time is 3 min-10 min.

[0024] Preferably, the intermediate base crude oil is selected from at least one of Angola Plutoni crude oil, Kaisarje crude oil, Saudi Arabian medium crude oil, Mahila crude oil, Hange crude oil and Oman crude oil.

[0025] More preferably, the intermediate base crude oil comprises the Angolan Plutone crude oil, the Kaiserge crude oil and the Saudi Arabian medium crude oil, wherein the content of the Plutone crude oil in the intermediate base crude oil is 0wt%-10wt%, the content of the Kaiserge crude oil is 45wt%-65wt%, and the content of the Saudi Arabian medium crude oil is 35wt%-45wt%.

[0026] The second aspect of the present invention provides a heavy traffic road asphalt, which is prepared by the method described in the first aspect.

[0027] Through the above technical solution, the method provided by the present invention does not require the addition of other additives. The deoiled asphalt and the heavy-extracted oil from the three-line reduction are directly blended to produce heavy-traffic road asphalt that meets the AH-70 or AH-90 specification requirements of GB / T15180-2010. The preparation process is simple and the cost is low. High-value heavy-traffic road asphalt is produced by utilizing the deoiled asphalt and the heavy-extracted oil from the three-line reduction as byproducts produced by processing inferior crude oil. The method has strong practicality and high economic benefits. DETAILED DESCRIPTION

[0028] The following is a detailed description of the specific embodiments of the present invention. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0029] As mentioned above, the first aspect of the present invention provides a method for preparing heavy traffic road asphalt based on the heavy-extracted oil from the three-line reduction line, characterized in that it includes the following steps:

[0030] S1: performing propane deasphalting on the intermediate base crude oil to obtain deoiled asphalt; and

[0031] The distillate oil from the third-line reduction is subjected to furfural refining treatment to obtain the third-line reduction heavy-extracted oil;

[0032] S2: blending the deoiled asphalt with the heavy-extracted oil from the three-line reduction process without any additives to obtain heavy-traffic road asphalt;

[0033] In step S1, the conditions of the propane deasphalting treatment are controlled so that the saturated hydrocarbon content of the deoiled asphalt is 5wt%-10wt%, the aromatic hydrocarbon content of the deoiled asphalt is 43wt%-47wt%, the asphaltene content of the deoiled asphalt is 45wt%-51wt%, and the needle penetration of the deoiled asphalt is 91 / 10mm-121 / 10mm;

[0034] In step S1, the furfural refining treatment conditions are controlled so that the saturated hydrocarbon content of the three-line heavy-extracted oil is 10wt%-15wt%, the aromatic hydrocarbon content of the three-line heavy-extracted oil is 70wt%-78wt%, the colloid content of the three-line heavy-extracted oil is 11wt%-17wt%, the asphaltene content of the three-line heavy-extracted oil is 0.3wt%-1wt%, and the kinematic viscosity of the three-line heavy-extracted oil at 100°C is 22mm 2 .s -1 -27mm 2 .s -1 ;

[0035] In step S2, the total weight of the deoiled asphalt and the triplex-reduced heavily extracted oil subjected to the blending treatment is 100 parts by weight, wherein the deoiled asphalt accounts for 70-80 parts by weight and the triplex-reduced heavily extracted oil accounts for 20-30 parts by weight.

[0036] It should be noted that, in step S2, additive-free means that no other tackifiers, compatibilizers, modifiers, etc. are added when the deoiled asphalt is blended with the three-line weight-reduced oil, for example, such as butyl rubber, styrene-butadiene rubber and styrene-butadiene cross-linking agents.

[0037] It should be noted that, in the present invention, the needle penetration is measured at 25°C, within 5s, and 100 load.

[0038] The method provided by the present invention does not require the addition of other additives. The deoiled asphalt and the heavy-extracted oil from the three-reduction line are directly blended to produce heavy-traffic road asphalt that meets the AH-70 or AH-90 specification requirements of GB / T15180-2010. The preparation process is simple and the cost is low. High-value heavy-traffic road asphalt is produced by utilizing the deoiled asphalt and the heavy-extracted oil from the three-reduction line, which are by-products of processing inferior crude oil. The method has strong practicality and high economic benefits.

[0039] According to some preferred embodiments of the present invention, in step S1, the conditions of the propane deasphalting treatment are controlled so that the softening point of the deoiled asphalt is 65°C-70°C.

[0040] According to some preferred embodiments of the present invention, in step S1, the conditions of the propane deasphalting treatment are controlled so that the wax content of the deoiled asphalt is not higher than 1.8 wt%.

[0041] According to some preferred embodiments of the present invention, in step S1, the conditions of the furfural refining treatment are controlled so that the wax content of the three-line depleted heavy oil is not higher than 3.5 wt%.

[0042] According to some preferred embodiments of the present invention, in step S1, the furfural refining process comprises:

[0043] S11: extracting the minus three-line distillate oil and the furfural in an extraction tower, wherein the minus three-line distillate oil is fed from the lower part of the extraction tower, and the furfural is fed from the upper part of the extraction tower, and the feed weight ratio of the minus three-line distillate oil to the furfural is 1:(1.8-2.8);

[0044] S12: After the extracted oil produced at the bottom of the extraction tower is subjected to sedimentation treatment, the lower layer liquid is separated to obtain the three-line-reduced heavy extracted oil.

[0045] The three-line heavy extraction oil obtained under the preferred conditions can be blended with deoiled asphalt to produce heavy traffic asphalt, which can produce heavy traffic asphalt with better performance.

[0046] According to some preferred embodiments of the present invention, in step S11, the top temperature of the extraction tower is 113° C.-117° C., the bottom temperature is 83° C.-87° C., and the bottom pressure is 0.5 MPa-0.9 MPa.

[0047] According to some preferred embodiments of the present invention, in step S12, the temperature of the sedimentation treatment is not greater than 47° C., the pressure is 0.2 MPa-0.8 MPa, and the sedimentation time is 15 min-30 min.

[0048] According to some preferred embodiments of the present invention, in step S1, the flash point of the oil extracted from the triple-line extraction process is 235°C-245°C.

[0049] According to some preferred embodiments of the present invention, in step S2, the deoiled asphalt and the heavy-extracted oil (reduced from three-line) are blended together to form 100 parts by weight, with the deoiled asphalt comprising 70-75 parts by weight and the heavy-extracted oil (reduced from three-line) comprising 25-30 parts by weight. Under these preferred conditions, heavy-duty road asphalt meeting the AH-90 specification requirements of GB / T 15180-2010 can be produced.

[0050] According to some preferred embodiments of the present invention, in step S2, the temperature of the blending treatment is 120° C.-140° C., and the blending time is 3 min-10 min.

[0051] According to some preferred embodiments of the present invention, the intermediate base crude oil is selected from at least one of Angola Plutoni crude oil, Kaisarje crude oil, Saudi Arabian medium crude oil, Mahila crude oil, Hango crude oil, and Oman crude oil.

[0052] According to some more preferred embodiments of the present invention, the intermediate base crude oil comprises the Angolan Plutoni crude oil, the Kaisarge crude oil and the Saudi Arabian medium crude oil, wherein the content of the Plutoni crude oil in the intermediate base crude oil is 0wt%-10wt%, the content of the Kaisarge crude oil is 45wt%-65wt%, and the content of the Saudi Arabian medium crude oil is 35wt%-45wt%.

[0053] The second aspect of the present invention provides a heavy traffic road asphalt prepared by the method described in the first aspect. The heavy traffic road asphalt meets the requirements of AH-70 or AH-90 of GB / T15180-2010.

[0054] The present invention will be described in detail below by way of examples. In the following examples, unless otherwise specified, the various raw materials used can be obtained from commercial sources. It should be noted that in the following examples, each 1 part by weight represents 1 kg.

[0055] Intermediate base crude oil:

[0056] Angola Plutoni crude oil, Kaiserja crude oil, Saudi Arabian Medium crude oil.

[0057] The above-mentioned crude oil was purchased by China International Petroleum & Chemical Corporation.

[0058] Furfural was purchased from Pingquan Fengsheng Chemical Co., Ltd. with a purity of >98.5%.

[0059] Intermediate base crude oil blend A (hereinafter referred to as blended crude oil A): based on the total weight of the blended crude oil A being 100 parts by weight, wherein the blended crude oil is a mixture of 40 parts by weight of Saudi Arabian intermediate crude oil, 5 parts by weight of Angolan Plutoni crude oil, and 55 parts by weight of Kaisarja crude oil;

[0060] Intermediate base crude oil blend B (hereinafter referred to as blended crude oil B): based on the total weight of the blended crude oil B being 100 parts by weight, the blended crude oil is a mixture of 50 parts by weight of Saudi Arabian intermediate crude oil and 50 parts by weight of Kaiserje crude oil.

[0061] Example 1

[0062] S1: performing propane deasphalting on the intermediate base crude oil to obtain deoiled asphalt; and

[0063] The distillate oil from the third-line reduction is subjected to furfural refining treatment to obtain the third-line reduction heavy-extracted oil;

[0064] S2: blending the deoiled asphalt with the heavy-extracted oil from the three-line reduction process without any additives to obtain heavy-traffic road asphalt;

[0065] In step S1, the conditions of the propane deasphalting treatment are controlled so that the saturated hydrocarbon content of the deoiled asphalt is 6.73 wt%, the aromatic hydrocarbon content of the deoiled asphalt is 45.29 wt%, and the asphaltene content of the deoiled asphalt is 47.98 wt%;

[0066] In step S1, the furfural refining treatment conditions are controlled so that the saturated hydrocarbon content of the three-line heavy-extracted oil is 12.09wt%, the aromatic hydrocarbon content of the three-line heavy-extracted oil is 72.93wt%, the colloid content of the three-line heavy-extracted oil is 14.43wt%, the asphaltene content of the three-line heavy-extracted oil is 0.55wt%, and the kinematic viscosity of the three-line heavy-extracted oil at 100°C is 24.41mm 2 .s -1 ;

[0067] In step S2, the total weight of the deoiled asphalt and the triplex-reduced heavy-extracted oil subjected to the blending treatment is 100 parts by weight, wherein the deoiled asphalt accounts for 76 parts by weight and the triplex-reduced heavy-extracted oil accounts for 24 parts by weight.

[0068] In step S1, the furfural refining process includes:

[0069] S11: extracting the minus three-line distillate oil and the furfural in an extraction tower, wherein the minus three-line distillate oil is fed from the lower part of the extraction tower, and the furfural is fed from the upper part of the extraction tower, and the feed weight ratio of the minus three-line distillate oil to the furfural is 1:2;

[0070] S12: subjecting the extracted oil produced at the bottom of the extraction tower to sedimentation treatment, and separating the lower layer liquid to obtain heavy extracted oil;

[0071] Wherein, in step S11, the top temperature of the extraction tower is 115°C, the bottom temperature is 85°C, and the bottom pressure is 0.7 MPa;

[0072] In step S12, the temperature of the sedimentation treatment is 40°C, the pressure is 0.5 MPa, and the sedimentation time is 20 min;

[0073] In step S2, the temperature of the blending treatment is 130° C., and the blending time is 5 minutes.

[0074] Specifically, various parameters in the preparation process are shown in Table 1 below, and performance parameters of the prepared heavy traffic road asphalt are shown in Table 2 below.

[0075] Example 2

[0076] The process was carried out in a similar manner to that of Example 1, except that the ratio of the deoiled asphalt to the heavy-extracted oil from the three-line reduction process in step S2 was adjusted.

[0077] Example 3

[0078] The method is similar to that of Example 1, except that the type of intermediate base crude oil and the ratio of deoiled asphalt to the heavy extracted oil from the three-line reduction process in step S2 are changed.

[0079] Example 4

[0080] The method is similar to that of Example 1, except that in step S1, the furfural refining treatment is carried out as follows:

[0081] S11: extracting the minus three-line distillate oil and the furfural in an extraction tower, wherein the minus three-line distillate oil is fed from the lower part of the extraction tower, and the furfural is fed from the upper part of the extraction tower, and the feed weight ratio of the minus three-line distillate oil to the furfural is 1:1;

[0082] S12: subjecting the extracted oil produced at the bottom of the extraction tower to sedimentation treatment, and separating the lower layer liquid to obtain heavy extracted oil;

[0083] Wherein, in step S11, the top temperature of the extraction tower is 115°C, the bottom temperature is 85°C, and the bottom pressure is 0.7 MPa;

[0084] In step S12, the temperature of the sedimentation treatment is 40°C, the pressure is 0.5 MPa, and the sedimentation time is 20 minutes.

[0085] Comparative Example 1

[0086] The process was carried out in a similar manner to that of Example 1, except that the ratio of deoiled asphalt to re-extracted oil in step S2 was adjusted.

[0087] Comparative Example 2

[0088] The process was carried out in a similar manner to that of Example 1, except that the ratio of deoiled asphalt to re-extracted oil in step S2 was adjusted.

[0089] Table 1

[0090]

[0091]

[0092]

[0093] Table 2

[0094]

[0095] It can be seen from the results in Table 1 and Table 2 that the method of the present invention can produce heavy traffic road asphalt with quality meeting the AH-70 or AH-90 specifications of GB / T15180-2010 using deoiled asphalt and three-line heavy extraction oil.

[0096] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, various simple variations of the technical solution of the present invention may be made, including combining the various technical features in any other appropriate manner. These simple variations and combinations should also be regarded as disclosed in the present invention and fall within the scope of protection of the present invention.

Claims

1. A method for preparing heavy traffic road asphalt based on heavy-extracted oil from a three-line reduction line, characterized in that: The following steps are involved: S1: Propane deasphalting the intermediate base crude oil to obtain deoiled asphalt; as well as The three-line distillate oil is subjected to furfural refining treatment to obtain the three-line heavy-extracted oil; S2: blending the deoiled asphalt with the heavy-extracted oil from the three-line reduction process without any additives to obtain heavy-traffic road asphalt; In step S1, the conditions of the propane deasphalting treatment are controlled so that the saturated hydrocarbon content of the deoiled asphalt is 5 wt%-10 wt%, the aromatic hydrocarbon content of the deoiled asphalt is 43 wt%-47 wt%, the asphaltene content of the deoiled asphalt is 45 wt%-51 wt%, and the needle penetration of the deoiled asphalt is 9 1 / 10 mm-12 1 / 10 mm; In step S1, the furfural refining process includes: S11: extracting the minus three-line distillate oil and the furfural in an extraction tower, wherein the minus three-line distillate oil is fed from the lower part of the extraction tower, and the furfural is fed from the upper part of the extraction tower, and the feed weight ratio of the minus three-line distillate oil to the furfural is 1:(1.8-2.8); S12: subjecting the extracted oil produced at the bottom of the extraction tower to sedimentation treatment, and separating the lower layer liquid to obtain the three-line-reduced heavy extracted oil; In step S1, the furfural refining treatment conditions are controlled so that the saturated hydrocarbon content of the three-line heavy-extracted oil is 10wt%-15wt%, the aromatic hydrocarbon content of the three-line heavy-extracted oil is 70wt%-78wt%, the colloid content of the three-line heavy-extracted oil is 11wt%-17wt%, the asphaltene content of the three-line heavy-extracted oil is 0.3wt%-1wt%, and the kinematic viscosity of the three-line heavy-extracted oil at 100°C is 22mm 2 .s -1 -27mm 2 .s -1 ; In step S2, the total weight of the deoiled asphalt and the triplex-reduced heavily extracted oil subjected to the blending treatment is 100 parts by weight, wherein the deoiled asphalt accounts for 70-80 parts by weight and the triplex-reduced heavily extracted oil accounts for 20-30 parts by weight.

2. The method according to claim 1, characterized in that In step S1, the conditions of the propane deasphalting treatment are controlled so that the softening point of the deoiled asphalt is 65°C-70°C.

3. The method according to claim 1, characterized in that In step S1, the conditions of the propane deasphalting treatment are controlled so that the wax content of the deoiled asphalt is not higher than 1.8 wt%.

4. The method according to claim 1, wherein In step S1, the furfural refining treatment conditions are controlled so that the wax content of the three-line depleted oil is not higher than 3.5 wt%.

5. The method according to claim 1, wherein In step S11, the top temperature of the extraction tower is 113° C.-117° C., the bottom temperature is 83° C.-87° C., and the bottom pressure is 0.5 MPa-0.9 MPa.

6. The method according to claim 1, characterized in that In step S12, the temperature of the sedimentation treatment is not greater than 47°C, the pressure is 0.2MPa-0.8MPa, and the sedimentation time is 15min-30min.

7. The method according to any one of claims 1 to 6, characterized in that In step S1, the flash point of the oil extracted from the three-line decomposition process is 235°C-245°C.

8. The method according to any one of claims 1 to 6, characterized in that In step S2, the total weight of the deoiled asphalt and the triplex-reduced heavily extracted oil subjected to the blending treatment is 100 parts by weight, wherein the deoiled asphalt accounts for 70-75 parts by weight and the triplex-reduced heavily extracted oil accounts for 25-30 parts by weight.

9. The method according to any one of claims 1 to 6, characterized in that In step S2, the temperature of the blending treatment is 120°C-140°C, and the blending time is 3 minutes-10 minutes.

10. The method according to any one of claims 1 to 6, characterized in that The intermediate base crude oil is selected from at least one of Angola Plutoni crude oil, Kaisarje crude oil, Saudi Arabian medium crude oil, Mahila crude oil, Hange crude oil and Oman crude oil.

11. The method according to claim 10, characterized in that The intermediate base crude oil includes the Angolan Plutoni crude oil, the Kaisarge crude oil and the Saudi Arabian medium crude oil. In the intermediate base crude oil, the content of the Plutoni crude oil is 0wt%-10wt%, the content of the Kaisarge crude oil is 45wt%-65wt%, and the content of the Saudi Arabian medium crude oil is 35wt%-45wt%.

12. A heavy traffic road asphalt, characterized in that: Prepared by the method described in any one of claims 1 to 11.

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