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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[0048] use figure 1 process. Ethylene tar was distilled into light fraction and heavy fraction, with 420°C and 480°C as the cut-off points, respectively, to obtain light fraction and heavy fraction after distillation. The properties of the vacuum residue are listed in Table 2. Table 3. The obtained ethylene tar heavy fraction was mixed with the vacuum residue, the mixed raw material and its delayed coking process conditions, and the properties of the obtained gasoline and diesel fractions are shown in Table 4. After mixing the ethylene tar light fraction and coker diesel oil, the mixed raw material is rectified by double towers to obtain a naphthalene-rich fraction, and then a static crystallizer is used to obtain industrial naphthalene. The process conditions and product properties are shown in Table 5. After the naphthalene-removed oil and naphthalene fraction oil are mixed with tar gasoline and coker wax oil, the mixed raw material is used as the raw material for the hydro...
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