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Method and device for desulfurizing and deaminizing light naphtha

A light naphtha and deamination technology, which is applied in the petroleum industry, processing hydrocarbon oil, refining hydrocarbon oil, etc., can solve the problems of high sulfur content in light naphtha, and achieve the solution of high sulfur content with a simple method , the effect of a large amount of processing

Active Publication Date: 2018-09-25
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the present disclosure, the sulfide in the light naphtha is firstly removed by the alcohol amine method, and then the MDEA entrained in the light naphtha after desulfurization is removed by an adsorption-regeneration continuous reaction device, which effectively solves the problem of light naphtha The problem of high sulfur content in oil effectively solves the problem of high alkalinity of light naphtha after desulfurization, improves the quality of subsequent blended gasoline, avoids the generation of a large amount of waste water, and greatly improves its economic benefits

Method used

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  • Method and device for desulfurizing and deaminizing light naphtha

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] according to figure 1 The shown desulfurization-adsorption-regeneration reactor is combined with desulfurization and deamination process to remove thiamine in light naphtha.

[0059] (1) Material properties

[0060] The material used is light naphtha with sulfur content exceeding the standard, and the light naphtha contains 100-150mg / L MDEA after desulfurization by alcohol amine method. The rated flow rate is 10 tons / hour, the temperature is 35-45°C, and the average temperature is about 40°C.

[0061] Density: The average light naphtha is 0.76g / cm 3 , MDEA is about 1.042kg / m according to the density of water at 40°C 3 .

[0062] Viscosity: The relative viscosity of MDEA is 90-115mm 2 / s.

[0063] (2) Content determination

[0064] The content of amine liquid is determined by measuring the pH value of light naphtha.

[0065] (3) Application effect

[0066] (i) After the system is used, it not only effectively removes the sulfide in the light naphtha, but also ef...

Embodiment 2

[0070] according to figure 1 The shown desulfurization-adsorption-regeneration reactor is combined with desulfurization and deamination process to remove thiamine in light naphtha.

[0071] (1) Material properties

[0072] The material used is light naphtha with sulfur content exceeding the standard, and the light naphtha contains about 100 mg / L MDEA after desulfurization by alcohol amine method. The rated flow rate is 1 ton / hour, the temperature is 35-45°C, and the average temperature is about 40°C.

[0073] Density: The average light naphtha is 0.76g / cm 3 , MDEA is about 1.042kg / m according to the density of water at 40°C 3 .

[0074] Viscosity: The relative viscosity of MDEA is 90-115mm 2 / s.

[0075] (2) Content determination

[0076] The content of amine liquid is determined by measuring the pH value of light naphtha.

[0077] (3) Application effect

[0078] (i) After the system is used, it not only effectively removes the sulfide in the light naphtha, but also e...

Embodiment 3

[0082] according to figure 1 The shown desulfurization-adsorption-regeneration reactor is combined with desulfurization and deamination process to remove thiamine in light naphtha.

[0083] (1) Material properties

[0084] The material used is light naphtha with sulfur content exceeding the standard, and the light naphtha contains about 100 mg / L MDEA after desulfurization by alcohol amine method. The rated flow rate is 1 ton / hour, the temperature is 20-30°C, and the average temperature is about 25°C.

[0085] Density: The average light naphtha is 0.76g / cm 3 , MDEA is about 1.042kg / m according to the density of water at 40°C 3 .

[0086] Viscosity: The relative viscosity of MDEA is 90-115mm 2 / s.

[0087] (2) Content determination

[0088] The content of amine liquid is determined by measuring the pH value of light naphtha.

[0089] (3) Application effect

[0090] (i) After the system is used, it not only effectively removes the sulfide in the light naphtha, but also e...

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Abstract

The invention relates to a method and a device for desulfurizing and deaminizing light naphtha and provides a method for desulfurizing and deaminizing the light naphtha. The method comprises the following steps: (a) using an alcohol-amine method to treat the light naphtha so as to remove sulfides in the light naphtha; (b) leading the light naphtha with removal of the sulfides and obtained in the step (a) and an adsorbent to carry out adsorption reaction so as to remove N-methyldiethanolamine in the light naphtha; and (c) after the adsorbent is saturated, adopting steam to carry out regeneration on the adsorbent. The invention also provides a device for desulfurizing and deaminizing the light naphtha.

Description

technical field [0001] The present disclosure relates to a method and a device for removing sulfides and alkalis in light naphtha, in particular, to using a desulfurization tower, a fixed-bed adsorption reactor and self-made adsorbents to remove sulfides and alkalis in light naphtha. A method and device for removing sulfide and alkali. Background technique [0002] In the petrochemical industry, light naphtha is used as an important raw material for producing ethylene and propylene from tube furnace cracking and catalytic reforming to produce benzene, toluene and xylene, and the sulfur content in it needs to be controlled. Currently light naphtha dehydrogenation 2 The S method is divided into two types: dry desulfurization and wet desulfurization. The alcohol amine method is the most widely used wet desulfurization method. However, the light naphtha desulfurized by the alcohol amine method will inevitably entrain a part of N-methyldiethanolamine (MDEA), resulting in a hig...

Claims

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Application Information

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IPC IPC(8): C10G53/08C10G25/00
CPCC10G25/003C10G53/08C10G2300/202
Inventor 白志山张斌罗会清古文全宗洁琼
Owner EAST CHINA UNIV OF SCI & TECH