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Non-hydrodenitrogeneration method for catalytically cracked gasoline

A catalytically cracked gasoline, non-hydrogenation technology is applied in the non-hydrogenation denitrification field of catalytically cracked gasoline, which can solve problems such as difficulty in operation, and achieve the effects of improving economic efficiency, prolonging service life and reducing material loss.

Inactive Publication Date: 2012-07-11
抚顺石化北天集团众兴公司鸿远达精细化工厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of denitrification adsorbent has a large adsorption capacity, when the nitrogen content in naphtha is high, it is necessary to frequently replace the denitrification adsorbent in the fixed bed or perform repeated regeneration operations, and there are still operational problems in the actual production process. difficulty

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of liquid denitrification agent: Weigh 100 g of 85% phosphoric acid, add 5 g of water, stir and mix, and dissolve 5 g of copper pyrophosphate in the above phosphoric acid solution. Wherein the mass percentage of orthophosphoric acid is 77.3%, the mass percentage of copper pyrophosphate is 4.5%, and the mass percentage of water is 18.2%.

[0026] Preparation of solid denitrification agent: Weigh 25 g of liquid denitrification agent and add 75 g of water to prepare a 25% aqueous solution, add 50 g of coal-based activated carbon (Ф1.5′3-10), mix in the above aqueous solution, and soak at at 20°C, impregnated for 14 h, filtered and dried at 105°C to constant weight.

[0027] Liquid denitrification agent pre-denitrification: Take 1 L catalytic cracking gasoline, its weight is 711.7g, put it in a 2 L stainless steel reactor, add 0.107 g liquid denitrification agent, the amount of liquid denitrification agent added accounts for the weight percentage of catalytic cr...

Embodiment 2

[0033] Preparation of liquid denitrification agent: Weigh 90 g of 85% phosphoric acid, add 10 g of water, stir and mix, and dissolve 7 g of copper pyrophosphate in the above phosphoric acid solution. Wherein the mass percentage of orthophosphoric acid is 71.5%, the mass percentage of copper pyrophosphate is 6.5%, and the mass percentage of water is 22%.

[0034]Preparation of solid denitrification agent: Weigh 30 g of liquid denitrification agent and add 70 g of water to prepare a 30% aqueous solution, add 66 g of 13X molecular sieve, mix in the above aqueous solution, immerse at 25°C for 24 h, and filter at 105 °C to constant weight.

[0035] Liquid denitrification agent pre-denitrification: Take 1 L catalytic cracking gasoline, its weight is 711.7g, put it in a 2 L stainless steel reactor, add 0.07 g liquid denitrification agent, the amount of liquid denitrification agent added accounts for the weight percentage of catalytic cracking gasoline Stir for 10 minutes at 0.2MPa a...

Embodiment 3

[0039] Preparation of liquid denitrification agent: Weigh 110 g of 85% phosphoric acid, add 5 g of water, stir and mix, and dissolve 10 g of copper pyrophosphate in the above phosphoric acid solution. Wherein the mass percentage of orthophosphoric acid is 74.8%, the mass percentage of copper pyrophosphate is 8.0%, and the mass percentage of water is 17.2%.

[0040] Preparation of solid denitrification agent: Weigh 20 g of liquid denitrification agent and add 80 g of water to prepare a 20% aqueous solution, add 33 g of activated alumina, mix in the above aqueous solution, immerse at 15°C for 20 h, and filter Dry at 105°C to constant weight.

[0041] Liquid denitrification agent pre-denitrification: take 1 L catalytic cracking gasoline, its weight is 711.7g, put it in a 2 L stainless steel reactor, add 0.14 g liquid denitrification agent, the amount of liquid denitrification agent added accounts for the weight percentage of catalytic cracking gasoline 0.02%, stirred at 0.3MPa a...

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Abstract

The invention discloses a non-hydrodenitrogeneration method for catalytically cracked gasoline. The non-hydrodenitrogeneration method for the catalytically cracked gasoline comprises the following steps: first, mixing a liquid denitrifying agent with the catalytically cracked gasoline by using a static mixer, standing, depositing, and pre-removing alkali nitrides; and then, performing contact reaction with a solid denitrifying agent through a fixed bed for finely removing the alkali nitrides. Through matching of the liquid denitrifying agent and the solid denitrifying agent, the alkali nitrides such as aliphatic amines, pyridines, quinolines and anilines and the like can be removed by pre-removing and finely removing steps; after the treatment of the liquid denitrifying agent, 80-90 percent of the alkali nitrides can be removed, and after the catalytically cracked gasoline passes through the solid denitrifying agent filled in a form of the fixed bed, the alkali nitrides can be removedcompletely, so that the negative effect of the alkali nitrides on a subsequent hydrodesulfurization catalyst can be completely eliminated. Therefore, the deep hydrodesulfurization of the catalytically cracked gasoline can be realized.

Description

1. Technical field [0001] The invention relates to a method for non-hydrogenation denitrogenation of catalytic cracking gasoline, in particular, the non-hydrogenation denitrogenation method is used to remove basic nitrogen compounds in catalytic cracking gasoline, which is beneficial to the realization of further deep hydrodesulfurization. 2. Background technology [0002] Since the 1980s when the United States, Europe, Japan and other countries began to unlead gasoline, the development of clean fuels in developed countries such as Europe, America and Japan has matured so far. More and more developing countries are following the pace of development of advanced countries. The quality of clean fuels in the world is constantly improving, and the proportion of clean fuels is gradually increasing. [0003] At present, the clean fuels of most European countries, North America, Japan, South Korea, New Zealand and other Asia-Pacific countries have reached the low-sulfur clean fuel ...

Claims

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Application Information

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IPC IPC(8): C10G53/02
Inventor 韩剑峰
Owner 抚顺石化北天集团众兴公司鸿远达精细化工厂
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