Hydrotreating Process of Fischer-Tropsch Synthetic Oil

A technology of hydrogenation treatment and catabolism synthesis, which is applied in the fields of hydrogenation treatment process, hydrocarbon oil treatment, petroleum industry, etc., which can solve problems such as complex reaction process and achieve the effect of flexible product scheme

CN101177625BActive Publication Date: 2011-12-07SYNFUELS CHINA TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2011-12-07

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Abstract

The invention discloses a method for hydrogenation treatment of Fischer-Tropsch synthetic oil. Specifically, the method of the invention is to process the crude naphtha fraction, gas oil fraction, rough rock The method of hydrotreating the mixed distillate of naphtha and gas oil, or the whole distillate oil of Fischer-Tropsch synthesis. The method comprises the steps of passing the Fischer-Tropsch synthetic oil raw material through at least two hydrotreating catalyst beds with different activities for hydrotreating, and then hydrocracking the tail oil obtained after hydrotreating, so that the hydrotreating product and Hydrocracking products enter different fractionation systems for separation. The method of the invention can obtain high-quality clean diesel oil with a cetane number higher than 75, and ultra-low-condensation clean diesel oil with a freezing point lower than -50 DEG C. Meanwhile, the obtained naphtha is a high-quality steam cracking raw material for ethylene production.
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Description

technical field

[0001] The present invention relates to a Fischer-Tropsch synthetic oil hydrotreating process, in particular to the Fischer-Tropsch synthetic whole distillate oil or the crude naphtha fraction and gas oil fraction in the liquid phase product obtained in the Fischer-Tropsch synthesis process , The hydrotreating process of processing the mixed distillate of crude naphtha and gas oil into high-quality motor fuel and high-quality chemical raw materials. Background technique

[0002] Fossil fuels mainly include coal and petroleum. From a global perspective, the reserves of coal far exceed the reserves of petroleum. Therefore, how to replace petroleum with coal is an important topic in the energy field. The important process for coal to replace petroleum is the liquefaction process of coal and the further processing process of coal liquefaction products.

[0003] According to different routes of chemical processing, coal liquefaction can be divided into two categ...

Examples

Embodiment 1、2、3、4

[0053] Embodiment 1, 2, 3 and 4 adopt figure 1 and 2 The process flow, the properties of the raw materials used are shown in Table 1. The high activity hydrotreating catalyst H-ACT1 used was prepared according to the process described in Example 6 of CN1339985A; H-ACT2 was prepared according to the process described in Example 7 of CN1339985A. The operating conditions of each reactor and the properties of the products obtained in Examples 1 and 2 are shown in Table 3, and the operating conditions of each reactor in Examples 3 and 4 and the properties of the products obtained are shown in Table 4.

[0054] Table 1 Raw Oil Properties

[0055] Raw oil Fischer-Tropsch synthetic oil Density / g·m -3 0.8112 Distillation range / ℃ 40～650 Acidity / mgKOH (100mL) -1 856 Oxygen content, % 2.5 Diene, % 11.25

[0056] Table 2 Main properties of highly active hydrotreating catalysts

[0057] catalyst H-ACT1 H-ACT2 Catalyst pr...