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System for producing high-quality gasoline by coupling naphtha and methanol and preparation method thereof

A naphtha, high-quality technology, used in hydrocarbon oil treatment products, petroleum industry, hydrocarbon oil treatment, etc., can solve the problems of high operating costs, high benzene and sulfur content, unstable product quality, etc., to reduce the amount of production , increase the desulfurization function, improve the effect of desulfurization efficiency

Inactive Publication Date: 2018-12-21
SINOPEC LUOYANG TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing naphtha aromatization technology has problems such as high benzene and sulfur content in the product, frequent switching of reaction regeneration in its fixed bed technology, and unstable product quality during the operation cycle; the existing methanol-to-gasoline technology has high durene content , Its fixed bed technology has problems such as high energy consumption and high operating costs

Method used

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  • System for producing high-quality gasoline by coupling naphtha and methanol and preparation method thereof
  • System for producing high-quality gasoline by coupling naphtha and methanol and preparation method thereof
  • System for producing high-quality gasoline by coupling naphtha and methanol and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Molecular sieve modification: Take 1200g of commercially available HZSM-5 molecular sieve with a silicon-aluminum ratio of 60, mix it with 2000mL of a solution containing 105g of zinc nitrate, 30g of nickel nitrate, 38g of lanthanum nitrate, and 12g of ammonium molybdate. Stir and exchange for 1 hour, then filter, dry the filter cake at 120°C for 3 hours, and bake at 550°C for 5 hours. Then the modified HZSM-5 molecular sieve can be obtained.

[0047] Catalyst preparation: pulverize the modified molecular sieve and carrier pseudo-boehmite and mix them well, ball mill to 400-1000 mesh, add to rolling forming kettle, dilute the binder and water according to the ratio of 1:5-1:10 , Spray intermittently into the mixture of molecular sieve and carrier through atomizing equipment, roll and shape continuously until it is shaped into a small ball with a diameter of 1-2mm, then dry at 70-130°C for 2 hours, and bake at 500°C for 4 hours , hydrothermally treated at 500°C for 2.5 ...

Embodiment 2

[0049] Catalyst B was obtained by taking 1200 g of commercially available HZSM-5 molecular sieve with a silicon-aluminum ratio of 25, and using the same active metal formula and preparation process as in Example 1.

Embodiment 3

[0051] Using the same catalyst and formula as in Example 1, the difference is that the quality of zinc nitrate in the molecular sieve modification solution is changed to 52g, the quality of nickel nitrate is changed to 71g, the quality of lanthanum nitrate is changed to 75g, and the quality of ammonium molybdate is changed to 20g Other preparation process Invariably, catalyst C was obtained.

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Abstract

The invention discloses a system for producing high-quality gasoline by coupling naphtha and methanol and a preparation method thereof. The system comprises multiple sections of continuous reaction units, wherein each section of reaction unit comprises a heating furnace and a reactor which are successively connected with each other, and each reactor is provided with a discharging pipe; and the multiple sections of reaction units are successively connected by virtue of the discharging pipe, the discharging pipe of a previous section of reaction unit is communicated with a methanol feeding pipeof a next section of reaction unit, and the discharging pipe of the last section of reaction unit is connected with an inlet of a separator. The production system adopts naphtha and methanol as raw materials to perform the coupling reaction in the presence of a catalyst, so that the generation amount of durene is greatly reduced, and the concentration of durene in a gasoline product is less than 0.9.

Description

technical field [0001] The invention relates to the technical field of gasoline production, and in particular to a system for producing high-quality gasoline by coupling naphtha with methanol and a preparation method thereof. Background technique [0002] With the increasingly stringent environmental protection regulations in my country, higher requirements are put forward for the sulfur content and hydrocarbon composition of finished gasoline for vehicles. At present, the national V motor gasoline standard requires the sulfur content of gasoline to be below 10ppm and the benzene volume fraction to be below 1.0%. From January 1, 2019, the national VI standard requires the benzene content to be below 0.8%. [0003] The existing naphtha aromatization technology has problems such as high benzene and sulfur content in the product, frequent switching of reaction regeneration in its fixed bed technology, and unstable product quality during the operation cycle; the existing methano...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G57/00
CPCC10G57/00C10G57/005C10G2300/1037C10G2300/1044C10G2300/202C10G2400/02
Inventor 刘林娇李治李欣李静静沈方峡任潇航俞安平魏晓波
Owner SINOPEC LUOYANG TECH CO LTD
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