Oil product separation and refining method

A technology for oil products and separation, applied in the direction of distillation purification/separation, hydrocarbon purification/separation, chemical instruments and methods, etc., can solve problems such as low price, affecting the overall economics of the hydrogasification process, and complex components. Achieve the effect of increasing added value

Active Publication Date: 2021-01-22
ENN SCI & TECH DEV
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Problems solved by technology

[0003]However, due to the complex composition of mixed oil products, they are generally classified as coal tar whe...

Method used

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  • Oil product separation and refining method

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Embodiment 1

[0070] In this example, the aromatic hydrocarbon mixed oil in the coal hydrogasification product is used as the raw material. Under normal pressure, the temperature is 40°C. The main composition of the mixed oil is shown in the following table:

[0071] components benzene naphthalene Pyrene Anthracene Philippines Fluorene Toluene Xylene molecular formula C 6 h 6

C 10 h 8

C 16 h 10

C 14 h 10

C 14 h 10

C 13 h 10

C 7 h 8

C 8 h 10

Proportion, wt% 33.74 25.09 12.35 0.23 6.07 3.24 0.67 0.2

[0072] according to figure 1 The shown process flow separates and refines the mixed oil:

[0073] When the entire process is initially started up, the mixed oil entering the first rectification tower T1 is all heated to the required temperature with the help of an external heat source (such as a reboiler). The mixed oil in the first rectification tower T1 first exchanges heat with the...

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Abstract

The invention relates to the technical field of oil product production, and particularly discloses an oil product separation and refining method which comprises the following steps of rectifying by virtue of a plurality of rectifying towers according to components and properties of an aromatic hydrocarbon mixed oil product, and strictly controlling parameters of each rectifying tower to obtain crude benzene, crude methylbenzene, naphthalene oil, anthracene oil and pyrene oil with relatively high purity. The additional value of the original mixed oil product and the economic benefit of the coalhydrogasification technical process are improved. Furthermore, the connecting sequence of a plurality of rectifying towers is optimized, a set of simple and reasonable technological process is designed, energy transfer in the rectifying process is ingeniously utilized while the product quality is not affected, and the purpose of saving energy is achieved.

Description

technical field [0001] The invention relates to the technical field of oil production, in particular to a method for separating and refining oil. Background technique [0002] The products of coal hydrogasification mainly include methane-rich synthesis gas, aromatics mixed oil and clean semi-coke. Among them, aromatic hydrocarbon blended oil has complex components, mainly including benzene, naphthalene, pyrene, anthracene, phenanthrene, fluorene, etc., and various oil components are mixed together in different proportions to form a blended oil. [0003] However, due to the complex composition of mixed oil products, when they are directly sold as products, they are generally classified as coal tar, and the price is not high, which will affect the overall economics of the hydrogasification process. [0004] Therefore, if the mixed oil can be separated and refined to obtain a single oil with high purity, the added value of the product can be increased, and the economic benefit...

Claims

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Application Information

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IPC IPC(8): C07C7/04C07C15/04C07C15/06C07C15/24C07C15/28C07C15/38
CPCC07C7/005C07C7/04C07C15/04C07C15/06C07C15/24C07C15/28C07C15/38
Inventor 马丽荣王浩强
Owner ENN SCI & TECH DEV
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