Treatment method of ethylene tar
A technology of ethylene tar and treatment method, which is applied in the field of combined process of delayed coking and hydrogenation, and can solve the problem of poor quality of liquid products - coker gasoline, diesel oil and wax oil, low liquid yield and low yield of light fuel oil products , Ethylene tar fraction has not been effectively dealt with, to achieve the effects of long-term operation, reduction of olefin content, and load reduction
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[0047] Examples 1~3
[0048] use figure 1 Process. The ethylene tar was distilled into light fraction and heavy fraction, with 420°C and 480°C as the cutting points, respectively. The light and heavy fractions were obtained after distillation. The properties are listed in Table 2, and the properties of vacuum residue are listed in Table 3. The obtained heavy fraction of ethylene tar is mixed with vacuum residue. The mixed raw materials and their delayed coking process conditions, and the properties of the obtained gasoline and diesel fractions are shown in Table 4. After mixing the light fraction of ethylene tar and coking diesel oil, the mixed raw materials are rectified with two towers to obtain the naphthalene-rich fraction, and then the static crystallizer is used to obtain industrial naphthalene. The process conditions and product properties are shown in Table 5. After the denaphthalene oil and the naphthalene post-distillate are mixed with tar gasoline and coking wax oil, ...
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