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Composite process of producing high quality diesel oil from coal liquified oil

A technology for coal liquefied oil and diesel oil, which is applied in the field of hydrotreating liquid hydrocarbons and can solve problems such as poor quality of diesel products

Inactive Publication Date: 2004-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the quality of the resulting diesel products, especially the cetane number, is poor

Method used

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  • Composite process of producing high quality diesel oil from coal liquified oil

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Experimental program
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Effect test

Embodiment 1

[0033] The filtered coal liquefied oil A and hydrogen enter the stable hydrogenation reactor, contact with the hydrogenation protection agent RG-10A / RG-10B, and the hydrogenation refining catalyst RCT-1, and the effluent of the stable hydrogenation reactor is separated to obtain gas, The naphtha fraction, diesel fraction and tail oil fraction, and the hydrogen-rich gas flow are recycled back to the stable hydrogenation reactor; the diesel fraction and hydrogen obtained from the stable hydrogenation reactor enter the hydrogenation reformer equipped with the hydrogenation reforming catalyst RIC-1 The effluent of the hydro-upgrading reactor is separated to obtain a naphtha fraction and a diesel fraction, and the hydrogen-rich gas flow is returned to the deep hydro-upgrading reactor.

[0034] The properties of feedstock oil, process conditions and properties of diesel products are listed in Table 1, Table 2 and Table 3, respectively. It can be seen from the table that the density ...

Embodiment 2

[0036] The flow process of this embodiment is basically the same as that of Embodiment 1, and the raw material oil is replaced by coal liquefied oil B. The properties of feedstock oil, process conditions and properties of diesel products are listed in Table 1, Table 2 and Table 3, respectively. It can be seen from the table that the density of coal liquefied oil is close to 1, the process conditions of hydrogenation and upgrading are relatively harsh, the content of sulfur and nitrogen in the product diesel fraction is very low, and the content of aromatics is low, which has reached the "World Fuel Oil Specification" Class II diesel oil The index requires that its cetane number exceeds 45, which is a qualified diesel product.

[0037] Example 1

[0038] Example 1

[0039] Example 1

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Abstract

A combined process for preparing high-quality diesel oil from the oil obtained by liquefying coal includes filtering the raw oil, adding it along with H2 to hydrogenating reactor, contacting with hydroprotecting agent and hydrorefining catalyst, reacting, separating to obtain H2-enriched gas, naphtha fraction, diesel oil fraction and tail oil fraction, returning the H2-enriched gas back to hydrogenating reactor, feeding the diesel oil fraction along with H2 in hydromodifying reactor, contacting with hydromodifying catalyst, reaction, separating to obtain naphtha fraction and diesel oil fraction, and returning the H2-enriched gas back to hydromodifying reactor.

Description

technical field [0001] The invention relates to a method for hydrogenation treatment of liquid hydrocarbons obtained by destructive hydrogenation of coal. More specifically, a method of producing diesel from coal liquefied oil. Background technique [0002] As early as 1913, Germany had started research on the technology of producing liquid hydrocarbons by direct liquefaction of coal, and industrialized the technology of producing gasoline by direct liquefaction of lignite in 1927. Since the first world oil crisis occurred in 1973, the direct coal liquefaction technology has attracted the attention of developed countries, and many direct coal liquefaction processes have been developed successively. The IGOR process developed in Germany refines coal liquefied oil on-line and directly produces qualified diesel products. Coal liquefied oil produced by other processes must undergo subsequent processing before it can become a qualified fuel oil product. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G1/00C10G65/02
Inventor 胡志海门卓武蒋东红熊震霖聂红
Owner CHINA PETROLEUM & CHEM CORP
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