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Method for improving gasoline quality by etherifying light gasoline

A technology for light gasoline and gasoline, applied in hydrocarbon oil treatment products, petroleum industry, hydrocarbon oil treatment, etc., can solve problems such as high octane number and pollution, achieve high conversion rate, increase the amount of etherification reaction, and increase environmental protection Effect

Active Publication Date: 2016-06-01
SHANDONG LIANXING ENERGY GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of human society, countries around the world, especially some developed countries, pay more and more attention to the protection of the environment. The rapid development of the automobile industry has caused serious pollution of the atmosphere by automobile exhaust. In order to reduce this pollution, no The demand for lead-containing oxygen and high-octane gasoline is increasing. At present, one of the main ways to increase the octane number of gasoline is to add oxygen-containing compounds with high octane number, such as methyl Tert-butyl ether (MTBE), ethyl tert-butyl ether (ETBE) and methyl tert-amyl ether (TAME) are widely used in countries all over the world because of their high octane number and the advantages of not releasing harmful substances such as CO. In addition, due to the impact of the Clean Air Act in the United States in the 1970s, these ethers have been widely used as gasoline octane enhancers and oxygen-containing substances to modify gasoline. The production of MTBE reached its peak in the 1980s. However, the water solubility of MTBE was relatively high, and its solubility in water was 4.8%, which was 2-3 times that of ETBETAEE and TAME. This high water solubility caused groundwater pollution, so The use of MTBE has been banned in California, USA on December 31, 2002

Method used

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  • Method for improving gasoline quality by etherifying light gasoline

Examples

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Effect test

Embodiment 1

[0025] A method for improving gasoline quality through etherification of light gasoline, the steps are as follows:

[0026] 1) Separating and hydrotreating catalytic gasoline to obtain light gasoline from which diolefins have been removed;

[0027] 2) Washing the light gasoline from which diolefins have been removed in step 1) with water to remove the poisoned substance of the etherification catalyst in the light gasoline, and then dehydrating;

[0028] 3) Light gasoline and ethanol after dehydration in step 2) enter the etherification reaction part according to the mole of ethanol: active olefin is 1.6, the primary etherification reaction bed, the secondary etherification reaction bed, the tertiary etherification reaction bed and the four-stage etherification reaction bed The grade etherification reaction bed is arranged in the etherification reaction device in turn, and the reactant after reaction treatment flows out from the reactor, and the effluent is TAME, C 5 The mixtu...

Embodiment 2

[0031] A method for improving gasoline quality through etherification of light gasoline, the steps are as follows:

[0032] 1) Separating and hydrotreating catalytic gasoline to obtain light gasoline from which diolefins have been removed;

[0033] 2) Washing the light gasoline from which diolefins have been removed in step 1) with water to remove the poisoned substance of the etherification catalyst in the light gasoline, and then dehydrating;

[0034] 3) Light gasoline and ethanol after dehydration in step 2) enter the etherification reaction part according to the mole of ethanol: active olefin is 1.8, the primary etherification reaction bed, the secondary etherification reaction bed, the tertiary etherification reaction bed and the four-stage etherification reaction bed The grade etherification reaction bed is arranged in the etherification reaction device in turn, and the reactant after reaction treatment flows out from the reactor, and the effluent is TAME, C 5 The mixtu...

Embodiment 3

[0037] As in Example 1, the etherification reaction conditions are at a temperature of 55°C, a pressure of 1.0MPa, and 0.8h -1 liquid space velocity.

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Abstract

The invention discloses a method for improving the gasoline quality by etherifying light gasoline. The method comprises the following steps: (1) separating and hydrogenating catalytic gasoline to obtain alkadiene-removed light gasoline; (2) washing the alkadiene-removed light gasoline to remove toxins in an etherified catalyst in the light gasoline, and dehydrating; (3) leading the dehydrated light gasoline in the step (2) and ethanol to enter the etherifying reaction part, flowing the reactant from a reactor to obtain effluent which is mixture of TAME, C5 component and ethanol; and (4) introducing the mixture of TAME and C5 component in the step (3) into a liquid distribution device, discharging from the liquid distribution device after liquid distribution and moisture removal to obtain the high-quality clean gasoline. The method can be used for greatly improving the environmental friendliness and reducing sewage discharge, has the advantages of simplicity in operation, high active olefin conversion rate and the like, and enables the conversion rates of active C5 and active C6 olefin to be over 90 percent and 45 percent respectively.

Description

technical field [0001] The invention belongs to the technical field of clean gasoline combination technology, and in particular relates to a method for improving gasoline quality through etherification of light gasoline. Background technique [0002] With the rapid development of human society, countries around the world, especially some developed countries, pay more and more attention to the protection of the environment. The rapid development of the automobile industry has caused serious pollution of the atmosphere by automobile exhaust. In order to reduce this pollution, no The demand for lead-containing oxygen and high-octane gasoline is increasing. At present, one of the main ways to increase the octane number of gasoline is to add oxygen-containing compounds with high octane number, such as methyl Tert-butyl ether (MTBE), ethyl tert-butyl ether (ETBE) and methyl tert-amyl ether (TAME) are widely used in countries all over the world because of their high octane number a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G69/02
CPCC10G69/02C10G2300/104C10G2400/02
Inventor 车春玲
Owner SHANDONG LIANXING ENERGY GRP CO LTD
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