Hydrogenation processing method for f-t synthetic oil

Abstract

The invention discloses a hydrogenation processing method of Fischer-Tropsch synthetic oil and the processing method is that the Fischer-Tropsch synthetic oil is subjected to hydrogenation processing in a plurality of hydrogenation processing reaction zones with different entrance temperatures. The entrance temperatures of hydrogenation processing reaction zones are raised by injecting hot hydrogen. The tail oil separated after hydrogenation processing is subjected to hydrogen cracking. Hydrogenation processing products and hydrogen cracking products enter different fractionating systems. The invention can acquire high-quality clean diesel oil with cetane value higher than 75 and low-freezing clean oil with solidifying point lower than 50 DEG C below zero, meanwhile, naphtha acquired is high-quality raw material used for producing ethylene by steam cracking.

Description

technical field

[0001] The present invention relates to a method for hydrotreating Fischer-Tropsch synthetic oil, in particular to the crude naphtha fraction and gas oil fraction in the Fischer-Tropsch synthesis whole distillate oil or the liquid phase product obtained in the Fischer-Tropsch synthesis process 1. A hydrotreating method for processing mixed fractions 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 categori...

Examples

Embodiment 1、2、3、4

[0050] Embodiment 1, 2, 3 and 4 adopt figure 1 and 2 The described process, the properties of raw materials used are shown in Table 1. Hydrotreating The first reaction zone effluent is mixed with hot hydrogen (temperature 550° C.) passing through a furnace to reach the second reaction zone inlet temperature. The operating conditions of each reactor of embodiment 1,2 and the properties of the products obtained are shown in Table 2, and the operating conditions of each reactor of embodiments 3 and 4 and the properties of the products obtained are shown in Table 3.

[0051] Table 1 Raw Oil Properties

[0052] 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

[0053] Table 2 embodiment 1,2 the operating conditions of each reactor and the character of gained product

[0054]

[0055] ...

technical field

[0001] The present invention relates to a method for hydrotreating Fischer-Tropsch synthetic oil, in particular to the crude naphtha fraction and gas oil fraction in the Fischer-Tropsch synthesis whole distillate oil or the liquid phase product obtained in the Fischer-Tropsch synthesis process 1. A hydrotreating method for processing mixed fractions 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 categori...

Examples

Embodiment 1、2、3、4

[0050] Embodiment 1, 2, 3 and 4 adopt figure 1 and 2 The described process, the properties of raw materials used are shown in Table 1. Hydrotreating The first reaction zone effluent is mixed with hot hydrogen (temperature 550° C.) passing through a furnace to reach the second reaction zone inlet temperature. The operating conditions of each reactor of embodiment 1,2 and the properties of the products obtained are shown in Table 2, and the operating conditions of each reactor of embodiments 3 and 4 and the properties of the products obtained are shown in Table 3.

[0051] Table 1 Raw Oil Properties

[0052] 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

[0053] Table 2 embodiment 1,2 the operating conditions of each reactor and the character of gained product

[0054]

[0055] ...

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