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Processing method of producing diesel oil from shale oil

A processing method and shale oil technology, applied in the petroleum industry, hydroprocessing process, hydrocarbon oil treatment products, etc., can solve the problems of poor quality and low output of diesel products, and achieve the effect of reducing nitrogen content

Active Publication Date: 2017-07-07
PETROCHINA CO LTD
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  • Claims
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Problems solved by technology

But the yield of diesel product obtained by this method is low and the quality is poor

Method used

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  • Processing method of producing diesel oil from shale oil
  • Processing method of producing diesel oil from shale oil
  • Processing method of producing diesel oil from shale oil

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Embodiment 1

[0033] see figure 2 As shown, the whole fraction of Fushun shale oil is used as the raw material, and its properties are shown in Table 1. The raw oil enters the atmospheric and vacuum distillation tower, and cuts to obtain light fraction (<500°C) and heavy fraction (≥500°C); Distillate (220~350°C), wax oil fraction (350~500°C) and petroleum coke (≥500°C). The wax oil fraction is mixed with the light fraction for hydrorefining to obtain: gas, gasoline fraction (30-220°C), diesel fraction (220-350°C) and tail oil (≥350°C). The hydrorefined tail oil is subjected to hydrocracking to obtain gas, gasoline fraction (30-220°C), diesel fraction (220-350°C) and cycle oil (≥350°C); all diesel fractions are mixed to obtain diesel products, and the obtained diesel oil is collected The yield is 75wt%, the sulfur content is less than 10μg / g, the nitrogen content is 3-15μg / g, and the cetane value is 65-69.

[0034] The above reaction conditions for delayed coking are: temperature 510° C....

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Abstract

The invention relates to a processing method of producing diesel oil from shale oil. The processing method comprises the following steps: allowing whole-fraction shale oil to enter distillation device for effluent fraction, taking a part less than 500 DEG C as a light fraction and a part greater than or equal to 500 DEG C as a heavy fraction, performing delayed coking on the heavy fraction, separating a reaction product to form the gas, a gasoline fraction, a diesel oil fraction, a wax oil fraction and a petroleum coke, mixing the wax oil fraction and the light fraction for hydrofining to form gas, the gasoline fraction, the diesel oil fraction and tail oil, performing hydrocracking on the hydrofining tail oil to form the gas, the gasoline fraction, the diesel oil fraction and circulation oil, mixing the circulation oil and the tail oil, continuing the hydrocracking, and mixing all the diesel oil fractions to form the diesel oil product, wherein a distillation range of the tail oil is greater than 350 DEG C.According to the method, the higher-yield diesel oil meeting the national V standard can be obtained by a combination technology of the delayed coking and the hydrocracking.

Description

technical field [0001] The invention relates to a method for combining delayed coking and hydrocracking to process shale oil, belonging to the technical field of shale oil processing. Background technique [0002] With the continuous consumption of petroleum resources, oil shale is second only to coal as an unconventional oil and gas resource reserve. As an important supplement of energy, shale oil extracted from it has attracted more and more attention as an effective supplement of petroleum resources. Compared with natural oil, shale oil has a high content of unsaturated hydrocarbons and non-hydrocarbon compounds (O, S, N, heterocyclic aromatic hydrocarbons, etc.), and the quality of shale oil is very poor, so it cannot be used as gasoline, diesel or chemical raw materials. At present, it is mainly used as fuel oil, and its use value is low. If shale oil can be further processed, the value of shale oil can be greatly increased. [0003] U.S. Patent No. 4,342,641 performs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/00
CPCC10G69/00C10G2300/1037C10G2400/02C10G2400/04
Inventor 王琰赵元生张春光周志远张志国夏明圆
Owner PETROCHINA CO LTD