Method for preparing heavy traffic road asphalt based on vacuum three-line heavy extract oil and heavy traffic road asphalt

Abstract

The invention relates to the field of road asphalt, in particular to a method for preparing heavy traffic road asphalt based on vacuum third-line heavy extract oil and the heavy traffic road asphalt, and specifically, the method for preparing the heavy traffic road asphalt comprises the following steps: S1, performing propane deasphalting treatment on intermediate base crude oil to obtain deoiled asphalt; and carrying out furfural refining treatment on the vacuum third fraction oil to obtain vacuum third heavy extract oil, s2, under the condition of no additive, blending the deoiled asphalt and the vacuum third-line heavy extract oil to obtain the heavy traffic road asphalt, in the step S2, the total weight of the deoiled asphalt and the vacuum third-weight extract oil subjected to blending treatment is 100 parts by weight, the deoiled asphalt accounts for 70-80 parts by weight, and the vacuum third-weight extract oil accounts for 20-30 parts by weight. The method provided by the invention can be used for producing the heavy traffic road asphalt of which the quality meets the specification requirements of AH-70 or AH-90 of GB / T15180-2010.

Description

Technical Field

[0001] The 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 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 cycloalkane-based crude oil. It is usually used to produce light deasphalted oil and heavy deasphalted oil through propane deasphalting treatment. Its by-product deoiled asphalt cannot be directly shipped as road asphalt due to its high hardness and poor low-temperature performance. It is mainly used to prepare construction asphalt or sold as fuel oil, and the economic benefits are not high.

[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 reduction 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 a preparation method thereof. However, the method also requires the addition of butyl rubber to the refined furfural 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 of the prior art that other additives need to be added to prepare heavy traffic road asphalt based on the heavy-extracted oil of the three-line reduction line, and to provide a method for preparing heavy traffic road asphalt based on the heavy-extracted 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, characterized in that it comprises the following steps:

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

[0008] The three-line distillate oil is subjected to furfural refining treatment to obtain the three-line heavy extraction oil;

[0009] S2: In the absence of additives, the deoiled asphalt is blended with the heavy-extracted oil from the three-line reduction process 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 triple-decayed 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 triple-decayed 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 conditions of the furfural refining treatment are controlled so that the wax content of the triple-reduced heavy-extracted oil is not higher than 3.5 wt%.

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

[0017] S11: extracting the three-line distillate oil and the furfural in an extraction tower, wherein the 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 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 0.5MPa-0.9MPa.

[0020] Preferably, 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.

[0021] Preferably, in step S1, the flash point of the three-line-reduced re-extracted oil is 235°C-245°C.

[0022] Preferably, in step S2, the total weight of the deoiled asphalt and the triple-decayed 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 triple-decayed 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 3min-10min.

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

[0025] More preferably, the intermediate base crude oil comprises the Angolan Plutone crude oil, the Kaiserje crude oil and the Saudi Arabian medium crude oil, and in the intermediate base crude oil, the content of the Plutone crude oil is 0wt%-10wt%, the content of the Kaiserje 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 scheme, the method provided by the present invention does not need to add other additives. The deoiled asphalt and the heavy-extracted oil from the three-reduction line are directly blended to obtain 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. The deoiled asphalt and the heavy-extracted oil from the three-reduction line, which are by-products of processing inferior crude oil, are used to produce high-value heavy-traffic road asphalt, which has strong practicality and high economic benefits. DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention are described in detail below. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used 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 extraction oil of the three-line reduction line, characterized in that it comprises the following steps:

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

[0031] The three-line distillate oil is subjected to furfural refining treatment to obtain the three-line heavy extraction oil;

[0032] S2: In the absence of additives, the deoiled asphalt is blended with the heavy-extracted oil from the three-line reduction process 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 triple-decayed 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 triple-decayed heavily extracted oil accounts for 20-30 parts by weight.

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

[0037] It should be noted that in the present invention, the needle penetration is measured under the conditions of 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. The deoiled asphalt and the heavy-extracted oil from the three-reduction line, which are by-products of processing inferior crude oil, are used to produce high-value heavy-traffic road asphalt. 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-reduced heavy-extracted oil is not higher than 3.5wt%.

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

[0043] S11: extracting the three-line distillate oil and the furfural in an extraction tower, wherein the 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 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, so as to 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 0.2MPa-0.8MPa, and the sedimentation time is 15min-30min.

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

[0049] According to some preferred embodiments of the present invention, in step S2, the total weight of the deoiled asphalt and the three-line heavy-extracted oil to be blended is 100 parts by weight, wherein the deoiled asphalt accounts for 70-75 parts by weight and the three-line heavy-extracted oil accounts for 25-30 parts by weight. Under this preferred condition, heavy traffic road asphalt that meets the AH-90 specification requirements of GB / T15180-2010 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 3min-10min.

[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, Kaisarge 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 Plutone crude oil, the Kaiserje crude oil and the Saudi Arabian medium crude oil, and in the intermediate base crude oil, the content of the Plutone crude oil is 0wt%-10wt%, the content of the Kaiserje 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, which is 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 channels. 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 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 mixed oil A (hereinafter referred to as mixed crude oil A): the total weight of the mixed crude oil A is 100 parts by weight, wherein the mixed crude oil is a mixture of 40 parts by weight of Saudi Arabian medium crude oil, 5 parts by weight of Angola Plutoni crude oil, and 55 parts by weight of Kaiserja crude oil;

[0060] Intermediate base crude oil mixed oil B (hereinafter referred to as mixed crude oil B): the total weight of the mixed crude oil B is 100 parts by weight, wherein the mixed crude oil is a mixture of 50 parts by weight of Saudi Arabian intermediate crude oil and 50 parts by weight of Kaiserjah crude oil.

[0061] Example 1

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

[0063] The three-line distillate oil is subjected to furfural refining treatment to obtain the three-line heavy extraction oil;

[0064] S2: In the absence of additives, the deoiled asphalt is blended with the heavy-extracted oil from the three-line reduction process 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 6.73wt%, the aromatic hydrocarbon content of the deoiled asphalt is 45.29wt%, and the asphaltene content of the deoiled asphalt is 47.98wt%;

[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 triple-decayed 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 triple-decayed heavy-extracted oil accounts for 24 parts by weight.

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

[0069] S11: extracting the three-line distillate oil and the furfural in an extraction tower, wherein the 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 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 0.7MPa;

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

[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 method is similar to that of Example 1, except that the ratio of deoiled asphalt to the heavy extracted oil from the three-line reduction process in step S2 is 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 and heavy extracted oil from the third-line reduction 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 step is carried out in the following manner:

[0081] S11: extracting the three-line distillate oil and the furfural in an extraction tower, wherein the 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 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 0.7MPa;

[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 min.

[0085] Comparative Example 1

[0086] The method is similar to that of Example 1, except that the ratio of deoiled asphalt to re-extracted oil in step S2 is adjusted.

[0087] Comparative Example 2

[0088] The method is similar to that of Example 1, except that the ratio of deoiled asphalt to re-extracted oil in step S2 is 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 that meets the AH-70 or AH-90 specification requirements of GB / T15180-2010 using deoiled asphalt and three-line heavy extraction oil.

[0096] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various technical features in any other suitable manner, and these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.

Claims

1. A method for preparing heavy traffic road asphalt based on heavy-extracted oil from three-line reduction, It is characterized in that The following steps are involved: S1: subjecting the intermediate base crude oil to propane deasphalting treatment to obtain deoiled asphalt; as well as The three-line distillate oil is subjected to furfural refining treatment to obtain the three-line heavy extraction oil; S2: In the absence of additives, the deoiled asphalt is blended with the heavy-extracted oil from the three-line reduction process 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 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; 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 triple-decayed 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 triple-decayed heavily extracted oil accounts for 20-30 parts by weight.

2. The method according to claim 1, It is 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.; 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%; Preferably, in step S1, the conditions of the furfural refining treatment are controlled so that the wax content of the three-line-reduced heavy-extracted oil is not higher than 3.5wt%.

3. The method according to claim 1, It is characterized in that In step S1, the furfural refining process comprises: S11: extracting the three-line distillate oil and the furfural in an extraction tower, wherein the 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 three-line distillate oil to the furfural is 1:(1.8-2.8); 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.

4. The method according to claim 3, It is characterized in that 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 0.5MPa-0.9MPa.

5. The method according to claim 3, It is 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.

6. The method according to any one of claims 1 to 5, It is characterized in that In step S1, the flash point of the three-line-reduced heavy-extracted oil is 235°C-245°C.

7. The method according to any one of claims 1 to 5, It is characterized in that In step S2, the total weight of the deoiled asphalt and the triple-decayed 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 triple-decayed heavily extracted oil accounts for 25-30 parts by weight.

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

9. The method according to any one of claims 1 to 5, It is characterized in that The intermediate base crude oil is selected from at least one of Angola Plutoni crude oil, Caesarje crude oil, Saudi Arabian medium crude oil, Mahila crude oil, Hango crude oil and Oman crude oil; Preferably, the intermediate base crude oil comprises the Angolan Plutone crude oil, the Kaiserje crude oil and the Saudi Arabian medium crude oil, and in the intermediate base crude oil, the content of the Plutone crude oil is 0wt%-10wt%, the content of the Kaiserje crude oil is 45wt%-65wt%, and the content of the Saudi Arabian medium crude oil is 35wt%-45wt%.

10. A heavy traffic road asphalt, It is characterized in that Prepared by the method described in any one of claims 1 to 9.

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