Device and process for treating condensed oil at top of vacuum tower

Abstract

The invention relates to a vacuum tower top condensate oil treatment device and process, an inlet of an oil-water separation tank is communicated with a gas-liquid phase outlet at the top of a vacuum tower, an oil phase outlet of the oil-water separation tank is provided with a detection device, and the oil phase outlet of the oil-water separation tank can be switched to be communicated with a heavy dirty oil delivery pipeline or a qualified diesel oil delivery pipeline. Detecting an actual oil product index at an oil phase outlet of the oil-water separation tank, and comparing the actual oil product index with a required index of a required oil product; if the actual oil product index meets the required index, the oil product at the oil phase outlet is conveyed to a qualified diesel oil delivery pipeline; and if the actual oil product index does not meet the required index, conveying the oil product at the oil phase outlet to a heavy dirty oil delivery pipeline, adjusting the temperature of the top of the vacuum tower, and detecting the actual oil product index until the actual oil product index meets the required index. The device has the beneficial effects that the qualified oil at the top of the vacuum tower can be timely recovered when the oil at the top of the tower is qualified, so that the energy is effectively saved, the loss is effectively stopped, and the oil recovery rate is improved.

Description

technical field [0001] The invention relates to the coal-to-oil industry, in particular to a device and process for treating condensed oil at the top of a vacuum tower. Background technique [0002] Hydrocracking is one of the petroleum refining processes. It is a process in which heavy oil undergoes a cracking reaction and is converted into gas, gasoline, jet fuel, diesel, etc. under the conditions of heating, high hydrogen pressure and the presence of a catalyst. The feedstock for hydrocracking is usually heavy distillate oil obtained by distillation of crude oil, including light deasphalted oil after vacuum residue is deasphalted by solvent. Its main feature is the high flexibility of production, and the product yield can be controlled by different operating conditions, or mainly for the production of gasoline, or for the production of low freezing point jet fuel, low freezing point diesel oil, or for the production of lubricating oil raw materials. The product quality i...

AI Technical Summary

Problems solved by technology

However, the index of the heavy dirty oil in the water separation tank at the top of the vacuum tower can meet the requirements of the product index under the condition that the working conditions are adjusted reasonably. The existing process does not recover this part of the heavy dirty oil, resulting in this part of the oil being sent to the waste oil. system

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