A kind of residue coking method
A residual oil and chemical technology, which is applied in the treatment of hydrocarbon oil, petroleum industry, hydrotreating process, etc., can solve the problem of low liquid yield and achieve the effect of improving yield
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Embodiment 1-5
[0082] The properties of the catalytically cracked heavy cycle oil used in Examples 1-5 are listed in Table 3. The hydrogenation catalyst used was produced by Hunan Changling Petrochemical Technology Development Co., Ltd., and the brand name was DC-301.
[0083] (1) Hydrogenation reaction of catalytic cracking heavy cycle oil
[0084] In Examples 1-5, FCC heavy cycle oil and hydrogen were uniformly mixed in a SV static mixer (purchased from Shanghai Hulong Petrochemical Engineering Co., Ltd.). The resulting mixture is fed into the top of a tubular fixed-bed reactor (with an inner diameter of 28 mm, a height of 1500 mm, and a catalyst packing height of 800 mm), and is contacted with a hydrogenation catalyst under the conditions listed in Table 2 for hydrogenation. The properties of the hydrogen reaction, the resulting hydroprocessed oil and the FCC heavy cycle oil as feedstock are listed in Table 3.
[0085] (2) Coking reaction
[0086] Mix 5 parts by weight of the catalytica...
Embodiment 6-9
[0098] The hydrogenated catalytic cracking heavy cycle oil prepared in Example 4 was blended into the vacuum residue according to the ratio listed in Table 5, and coking was carried out under the conditions listed in Table 5. The results of the coking experiments are listed in Table 5.
[0099] table 5
[0100]
[0101] It can be seen from the results in Table 5 that coking the residual oil with the method of the present invention can reduce the coke content in the product and obtain a higher liquid product yield. It can also be seen from Table 5 that when the amount of catalytically cracked heavy cycle oil added after hydrogenation is 1-3% by weight, a liquid product with a higher gasoline and diesel content can be obtained.
Embodiment 10
[0103] The properties of the FCC heavy cycle oil used in this example are listed in Table 6.
[0104] The hydrogenation catalyst used in this example is the RDA-32 hydrogenation catalyst produced by Sinopec Changling Catalyst Factory.
[0105] (1) Hydrogenation reaction of catalytic cracking heavy cycle oil
[0106] This embodiment adopts Figure 6 The process shown hydrotreats catalytically cracked heavy cycle oil.
[0107] Among them, the structure of the gas-liquid mixer is as follows: Figure 4 As shown, the structure of the member used to adjoin the liquid channel and the gas channel in the gas-liquid mixer is a pipe formed by a porous material (commercially purchased from Beijing Zhongtianyuan Environmental Engineering Co., Ltd.; 19 channels are evenly distributed on the pipe, each The inner diameter of each channel is 3.3mm, the average pore diameter of the pores on the tube wall is 50nm, the number of pores with a pore diameter in the range of 50-55nm accounts for 9...
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