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Low-load n-alkane solvent oil production process

A technology for n-paraffin and production process, which is applied in the field of n-paraffin solvent oil production technology, can solve the problems of large equipment load and energy consumption, cracked products and refined products cannot be separated and refined separately, etc., and achieves the effect of reducing the load.

Inactive Publication Date: 2015-03-25
SHANXI LUAN COAL BASED SYNTHETIC OIL
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AI Technical Summary

Problems solved by technology

[0005] At present, in the process of producing normal paraffin solvent oil, the cracked products and refined products cannot be separated and refined separately, and the load and energy consumption of the equipment are relatively large.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A low-load normal paraffin solvent oil production process, comprising the steps of:

[0032] (1) After the heat exchange of the cracking reaction product, the cracking heat is separated under high pressure to obtain high-fraction oil and high-fraction gas;

[0033] (2) Low-pressure separation of cracking heat high fraction oil to obtain cracking heat low fraction oil and cracking heat low fraction gas; cracking heat low fraction gas is cooled to 50°C, mixed with cracking cold high fraction oil, and subjected to cold low pressure separation to obtain Cracking cold low fraction oil, cracking cold low fraction gas and oily sewage;

[0034] (3) Heat exchange between the cracked cold low fraction oil and the refined reaction product, the cracked cold low fraction gas enters the fuel gas pipeline network as fuel, and the oily sewage exits the device;

[0035] (4) The cracked heat low fraction oil in step (2) is mixed with the cracked cold low fraction oil in step (3), and su...

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Abstract

The invention relates to a low-load n-alkane solvent oil production process, belonging to the technical field of oils and chemicals, and aiming to provide an n-alkane solvent oil production process which has the advantages that a cooled and refined product of reaction can be recovered independently, and the residual heat of the product of reaction can be recovered, so that the load of original equipment can be reduced, and the energy consumption can be lowered. According to the technical scheme, the low-load n-alkane solvent oil production process mainly comprises the following steps: separating the cracking heat of a product of cracking reaction at a high pressure, separating cracked hot heavy oil at a low pressure, exchanging heat between cracked cold light oil and the refined product of reaction, mixing cracked hot light oil with the cracked cold light oil, cracking and distilling.

Description

technical field [0001] The invention relates to a low-load n-paraffin solvent oil production process, which belongs to the technical field of oil chemistry. Background technique [0002] my country is a large coal country with a complete range of coal types. However, oil resources are poor and we are very dependent on imports. The development of indirect coal liquefaction technology can not only alleviate the pressure of oil imports, but also give a strong impetus to the implementation of clean coal technology in my country. [0003] Fischer-Tropsch synthesis is one of the indirect coal liquefaction technologies. The process of synthesizing paraffin-based liquid fuels with synthesis gas as raw material under catalyst (mainly iron-based) and appropriate reaction conditions. The traditional Fischer-Tropsch synthesis method uses cobalt as a catalyst, and the resulting product has complex composition, poor selectivity, less light liquid hydrocarbons and more heavy paraffins. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/00
CPCC10G53/00C10G2400/18
Inventor 刘俊义肖伟裴慧霞陈东阳朱磊谭代福李树晓
Owner SHANXI LUAN COAL BASED SYNTHETIC OIL
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