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A Solvent Deasphalting Process for Reducing Fuel Consumption in Heating Furnace

A heating furnace and deasphalting technology, which is applied in the direction of solvent refining, solvent extraction, sustainable manufacturing/processing through deasphalting, etc., can solve the problems of low feeding temperature of heating furnace, high fuel consumption and high energy consumption of heating furnace, and achieves The effect of increasing feed temperature, reducing fuel consumption and simplifying heat transfer process

Active Publication Date: 2018-10-09
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0004] In order to solve the shortcomings of low heating furnace feed temperature in the existing solvent deasphalting process, resulting in high fuel consumption and high energy consumption of the heating furnace, the purpose of the present invention is to provide a solvent deasphalting process that reduces the fuel consumption of the heating furnace

Method used

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  • A Solvent Deasphalting Process for Reducing Fuel Consumption in Heating Furnace
  • A Solvent Deasphalting Process for Reducing Fuel Consumption in Heating Furnace

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Embodiment

[0026] A kind of solvent deasphalting process of the present embodiment, its process flow diagram is as follows figure 2 As shown, the following improvements have been implemented compared to the comparative process:

[0027] 1. Increase the temperature of the slag reducing and discharging device of the atmospheric and vacuum device from 160°C to 250°C;

[0028] 2. Set feed heat exchangers 21 and 22 respectively in front of the deasphalting oil phase heating furnace and the asphalt phase heating furnace. The raw material slag reduction from the atmospheric and vacuum device at 250°C passes through them in turn, and the deasphalting oil phase heating furnace 9 is first heated The feed of the asphalt phase heating furnace 16 is heated again, and then enters the deasphalted oil heat exchanger 1 at 160 ° C;

[0029]3. The other processes of the stripping unit remain unchanged, and the operating conditions of the main process units such as the extractor 6, the high-pressure solve...

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Abstract

The invention belongs to the technical field of petrochemical industry, and discloses a solvent deasphalting technology capable of reducing fuel consumption of a heating furnace. The technology comprises the steps that 250-DEG C vacuum residues from an atmospheric and vacuum device are subjected to heat discharging and solvent deasphalting, fed materials of a deasphalting oil-phase heating furnace and fed materials of an asphalt-phase heating furnace are sequentially heated in a solvent deasphalting device, the temperature of the fed materials is increased, and then fuel consumption of the corresponding heating furnaces is reduced. According to the technology, heat integration taking the raw materials as heat carriers is only conducted between an upstream device and a downstream device, the principle flow of the upstream device and the downstream device cannot be changed, production distribution and quality of the upstream device and the downstream device cannot be influenced, total investment is very low, implementation is easy, and the energy-saving effect is significant.

Description

technical field [0001] The invention belongs to the technical field of petrochemical industry, and in particular relates to a solvent deasphalting process for reducing fuel consumption of a heating furnace. Background technique [0002] Solvent deasphalting (referred to as "dissolution") mainly uses the vacuum tower bottom residue (referred to as "residue") produced by atmospheric and vacuum equipment as raw material, applies the extraction principle, selects an appropriate solvent, and under a certain temperature and pressure, Utilizing the solvent's high solubility to saturated hydrocarbons and aromatics in raw materials, but almost insoluble to colloids and asphaltenes, the purpose of separating asphalt and producing deasphalted oil is achieved. The deasphalted oil after removing gum and bitumen is usually used as raw material for catalytic cracking. [0003] Generally, butane or pentane is used as solvent for stripping, because their solubility to deasphalted oil decrea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G21/00B01D11/04
CPCB01D11/0488C10G21/003C10G2300/1003C10G2300/206Y02P20/10
Inventor 李国庆欧春松王允
Owner SOUTH CHINA UNIV OF TECH
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