Method of producing high aromatic rubber operating oil during catalytic cracking
A technology for rubber operating oil and catalytic cracking is applied in the field of producing high aromatic rubber operating oil, which can solve the problems of high processing cost and achieve the effects of increasing processing volume, strong market competitiveness and reducing production cost.
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experiment example 1
[0019] Experimental Example 1: Properties of Catalytic Recycling Oil
[0020] The samples of the second catalytic re-refining oil and the third catalytic re-refining oil were collected and the ash content and properties of the samples were analyzed. The results are shown in Table 1 and Table 2.
[0021]
[0022] It can be seen from Table 1 that the ash content of the catalytically recycled oil is very low, and it is certain that the catalytically recycled oil does not contain catalyst powder.
[0023]
[0024] It can be seen from Table 2 that the recovery refining oil has the characteristics of high aromatics, and the distillation range can meet the requirements of high aromatics rubber process oil by cutting a small amount of light components.
experiment example 2
[0025] Experimental example 2: Distillation cutting test of catalytic oil refining
[0026] Distillation cutting tests were carried out on the second catalytic re-refining oil and the third catalytic re-refining oil, and the fraction yields of each distillation range were analyzed. The real boiling point distillation equipment used in the test is the "FY-Ⅱ" real boiling point distillation apparatus of Fushun Petrochemical Research Institute. The volume of the still is 10L, and about 3kg of material is loaded each time. Use the distiller to cut the raw oil. The operation process is: the raw oil is cut to 200°C in No. 1 tower under normal pressure, and then cut to 300°C under the system absolute pressure of 13.3kPa, and then continue to be cut at the system absolute pressure of 1.33kPa. Cut down to 360°C, and then cut to 530°C at the absolute pressure of the system at about 70Pa in Tower II. The results are shown in Table 3, Table 4 and Table 5.
[0027]
[0028] Table 3...
Embodiment 1
[0039] Raw oil: a mixture of 50%~70% Middle East light residue treated by residue hydrotreating unit and 30%~50% mixed distillate tail oil. Density 0.90~0.93g / cm 3 , Carbon residue 4.0~5.5%, Ni+V metal content not more than 15μg.
[0040] Preparation:
[0041] The diesel oil side line and the back refining oil side line of the fractionating tower of the catalytic cracking unit are arranged, and the heavy diesel oil side line is set between the diesel oil side line and the back refining oil side line of the fractionating tower.
[0042] The raw oil is subjected to catalytic cracking reaction in the catalytic cracking unit, the operating conditions are shown in Table 6, the catalyst oil ratio is 5.5~6.5, and the catalyst activity is 60~70. Make the aromatics content of the re-refined oil in the catalytic cracking unit more than 70%. Control the cut point temperature of the side line of heavy diesel oil at 380°C, and keep the aromatics content of the recycled oil in the cataly...
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