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Sulfur-reducing auxiliary agent for catalytically cracked gasoline

A technology of catalytic cracking gasoline and sulfur-reducing additives, which is applied in the direction of catalytic cracking, cracking, and petroleum industry, and can solve the problems of reduced gasoline yield, huge equipment investment, and large octane number loss, etc., to achieve reduced sulfur content, lower Effects of air pollution, long construction time

Active Publication Date: 2015-01-28
JIANGSU CHUANGXIN PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Disadvantages: huge equipment investment, high operating costs, high hydrogen consumption
Hydrodesulfurization of FCC gasoline or corresponding fractions can make gasoline fractions achieve a desulfurization rate of more than 90%, but due to the saturation of olefins, the octane number will be greatly lost (RON loss of 10 units, MON loss of 3 units), and follow-up projects are required Restoring octane, while also using a lot of hydrogen, is quite expensive
[0006] (2) Lower the cut point of gasoline, which is a very simple and practical method, such as reducing the final boiling point of gasoline from 220°C to 200°C, the sulfur content of gasoline can be reduced by about 35%, but the yield of gasoline will also be reduced by about 10%
However, conventional commercial FCC gasoline desulfurization aids are costly and can only reduce gasoline with S content ≥ 180 ppm to 160-170 ppm
All products do not meet the new gasoline standard (required S<150 ppm)

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040](1) Preparation of zinc solution:

[0041] Mix 125kg of water and 151kg of monoethanolamine and stir evenly, add 151kg of tartaric acid, use steam to gradually raise the temperature to 60°C, add 80kg of zinc oxide, then raise the temperature to 85°C, and keep warm for 1.5 hours to obtain 507 kg of zinc liquid.

[0042] (2) Production of titanium paste:

[0043] Pump 300kg of water into the reaction kettle, and add 39kg of ammonia water (concentration: 28%) into the reaction kettle and stir evenly, then add 250kg of titanium tetrachloride, and stir for 15 minutes; detect that the pH value is >8, suction filter, and first After the first suction filtration, add water to wash and suction filtration, and wash and suction filtration 3 times in total to obtain 130 kg of titanium paste.

[0044] (3) Synthesis of sulfur-reducing additives:

[0045] (I) Add 190kg of water, 138kg of tartaric acid, and 55kg of monoethanolamine to the reaction kettle in turn, mix, heat to 60°C and...

Embodiment 2

[0050] (1) Preparation of zinc solution:

[0051] Mix 135kg of water and 165kg of monoethanolamine and stir evenly, add 165kg of tartaric acid, use steam to gradually raise the temperature to 60°C, add 85kg of zinc oxide, then raise the temperature to 85°C, and keep warm for 1.5 hours to obtain 550kg of zinc liquid.

[0052] (2) Production of titanium paste:

[0053] Pump 320kg of water into the reaction kettle, and add 42kg of ammonia water (concentration: 28%) into the reaction kettle and stir evenly, then add 255kg of titanium tetrachloride, and stir for 15 minutes; detect that the pH value is > 8, suction filter, the first After the first suction filtration, add water to wash and suction filtration, and wash and suction filtration 3 times in total to obtain 133 kg of titanium paste.

[0054] (3) Synthesis of sulfur-reducing additives:

[0055] (I) Add 195 kg of water, 142 kg of tartaric acid, and 60 kg of monoethanolamine to the reaction kettle in turn, mix them, heat to...

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PUM

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Abstract

The invention discloses a sulfur-reducing auxiliary agent for catalytically cracked gasoline, and the sulfur-reducing auxiliary agent is prepared by adopting the following steps of: (1) preparing a zinc solution; (2) producing titanium paste; and (3) synthesizing the sulfur-reducing auxiliary agent. The sulfur-reducing auxiliary agent disclosed by the invention can outstandingly reduce the sulfur content of the catalytically cracked gasoline, is suitable for a new gasoline standard (S(150 ppm)), reduces the discharge amount of harmful gases, reduces the air pollution, protects the environment and outstandingly reduces the sulfur-reducing cost; and the (S(150 ppm)) gasoline produced by adopting the sulfur-reducing auxiliary agent prepared through the method disclosed by the invention only needs to increase ** yuan / ton and is conserved in energy.

Description

Technical field: [0001] The invention belongs to the field of petrochemical industry. A catalytic cracking gasoline sulfur-reducing additive is specifically designed. The additive can reduce the gasoline sulfur content of catalytic cracking units in the refining industry to meet the requirements of gasoline upgrading, and stabilize the gasoline sulfur content from 180ppm before adding the additive to below 150ppm. technical background: [0002] With the increase of sulfur content in crude oil and the stringent indicators of gasoline and diesel, the desulfurization of gasoline and diesel is becoming more and more important. The sulfur compounds in gasoline and diesel will generate sulfur oxides SOx after combustion, which can poison the catalyst of the automobile exhaust gas conversion system, further affecting the effective conversion of NOx, CO, and CH, and the emission of sulfur oxides into the atmosphere will form acid rain pollution environment. As people pay more and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/00
CPCY02A50/20
Inventor 葛晓军闵敏黄磊
Owner JIANGSU CHUANGXIN PETROCHEM
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