Method for improving stability of gasoline by decoloring by using activated carbon fiber

A technology of activated carbon fiber and stability, which is applied in the field of using activated carbon fiber to decolorize and improve the stability of gasoline. It can solve the problems of low adsorption efficiency and complicated regeneration process, and achieve the effect of simple regeneration method, good color and improved stability.

Active Publication Date: 2015-03-25
NINGXIA BAOTA PETROCHEM SCI & TECH IND DEV
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] The present invention aims at the problems that the decolorization process of gasoline by decolorizing sand or activated clay is complicated, and the adsorption efficiency after regeneration is not high, etc., and adopts a new gasoline decolorizer to ensure the stability of gasoline

Method used

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  • Method for improving stability of gasoline by decoloring by using activated carbon fiber

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Experimental program
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Embodiment Construction

[0017] 1. Adsorption process.

[0018] (1) Gasoline below 40°C from the device enters the adsorber from the top, and is evenly sprayed onto the activated carbon fiber packing layer through the feed distributor at the top of the adsorber. The adsorption process of activated carbon fibers is an exothermic process, and low temperature is conducive to Physical adsorption, the heat generated during the adsorption process is taken away by the ring coil (circulating water as the refrigerant) arranged in the packing layer, a temperature sensor is installed between the packing layers, and the temperature of the adsorption packing layer is controlled below 70°C to ensure better the adsorption effect.

[0019] (2) After the gasoline passes through the adsorber, it enters the filter under self-pressure to remove the fine activated carbon fibers carried out. The gasoline filtered by the filter enters the buffer tank and is pumped into the tank area.

[0020] 2. Regeneration process.

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Abstract

The invention discloses a method for ensuring the stability of gasoline by decoloring the gasoline by using activated carbon fiber. According to the method, activated carbon fiber of which the specific surface area is 1200-1600m<2> / g, the benzene absorption amount is 38-58wt%, the iodine absorption value is 1100-1500mg / g, the pore volume is 0.40-0.60ml / g and the average aperture is 0.60-0.80nm is adopted to decolor the gasoline, the regeneration mode is simple, the chromaticity of the decolored gasoline is relatively good, and the stability of the gasoline is greatly improved.

Description

technical field [0001] The invention relates to a gasoline decolorization method, in particular to a method for improving the stability of gasoline by adopting active carbon fiber decolorization. Background technique [0002] The ability of gasoline to resist oxidation under room temperature and liquid phase conditions is called the oxidation stability of gasoline, or stability for short. During the storage and use of gasoline, the color will become darker and viscous sediment will be formed, which is a sign of poor stability of gasoline. [0003] Gasoline with poor stability is prone to oxidation reaction during storage and transportation, forming colloid, darkening the color of gasoline, and even producing precipitation. For example, viscous jelly is formed in the fuel tank, filter screen, and carburetor, which will affect the fuel supply in severe cases; the colloid deposited on the spark plug will form carbon deposits at high temperatures and cause short circuits; depos...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/08
CPCC10G53/08C10G2400/02
Inventor 孙巧莉马利海钟浩
Owner NINGXIA BAOTA PETROCHEM SCI & TECH IND DEV
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