Method for modifying hydro-upgrading catalyst carrier

A catalyst carrier, hydrogenation and upgrading technology, applied in molecular sieve catalysts, chemical instruments and methods, catalyst regeneration/reactivation, etc., to achieve reasonable acidity and acidity distribution, reduce strong acid content, and improve performance

Active Publication Date: 2017-05-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the catalyst is used for diesel hydro-upgrading, although the freezing point of the diesel fraction can be lowered and the cetane number of the modified diesel can be increased, the diesel yield is still low below 97%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0034] Preparation of Z1: β molecular sieve B1, macroporous alumina (pore volume 1.0mL / g, specific surface area 400m 2 / g), binder (the molar ratio of nitric acid to small-pore alumina is 0.3) were put into a roller compactor and mixed, added water, rolled into a paste, extruded, and dried at 110°C for 4 hours. Then calcined at 550° C. for 4 hours to obtain carrier Z1.

[0035] Preparation of Z2: β molecular sieve B1, Y-type molecular sieve Y1, macroporous alumina (pore volume 1.0mL / g, specific surface area 400m 2 / g), binder (the molar ratio of nitric acid to small-pore alumina is 0.3) were put into a roller compactor and mixed, added water, rolled into a paste, extruded, and dried at 110°C for 4 hours. Then calcined at 550° C. for 4 hours to obtain carrier Z2.

[0036] Preparation of Z3: β molecular sieve B2, Y type molecular sieve Y2, macroporous alumina (pore volume 1.0mL / g, specific surface area 400m 2 / g), binder (the molar ratio of nitric acid to small-pore alumina i...

Embodiment 1

[0041] Weigh 41.5 g of aluminum nitrate, add an appropriate amount of deionized water to dissolve, and make the volume 105 mL, and obtain solution A1. Weigh 30.9 g of water-soluble silicone oil A, add an appropriate amount of deionized water to dissolve, and make the volume 105 mL to prepare solution B1. While stirring, slowly pour 35mL of B1 solution into 35mL of A1 solution, and add an appropriate amount of deionized water to make the final volume 72mL to prepare C1 solution.

[0042] Take 100g of hydrogenation-modifying catalyst support Z1, spray the solution C1 evenly on the hydrogenation-modification catalyst support Z1, and after curing for 10 hours, heat-treat at 100°C for 2h and 220°C for 2h to obtain the modified support S1.

[0043] Take 100g of hydrogenation modification catalyst carrier Z1, dilute 35mL of solution B1 to 72mL with deionized water, spray evenly on the carrier Z1, keep in good condition for 10 hours, heat-treat at 100°C for 2 hours, then dilute 35mL o...

Embodiment 2

[0045] Weigh 13.0 g of aluminum chloride and 20.8 g of water-soluble silicone oil B, add an appropriate amount of deionized water to dissolve, and make the volume 156 mL to prepare solution C2.

[0046] Take 100g of hydrogenation-modifying catalyst support Z1, and evenly spray 78mL of solution C2 on the hydrogenation-modification catalyst support Z1. After curing for 10 hours, heat-treat at 100°C for 2h and 220°C for 2h to obtain the modified support S3.

[0047] Take 100g of hydrogenation-modifying catalyst carrier Z1, and evenly spray 78mL of solution C2 on the hydrogenation-modifying catalyst carrier Z1. After curing for 10 hours, heat treatment at 100°C for 2h and 350°C for 2h under nitrogen atmosphere to obtain modified After the carrier S4.

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Abstract

The invention discloses a method for modifying a hydro-upgrading catalyst carrier. The method comprises the following steps: preparing the hydro-upgrading catalyst carrier, sequentially or simultaneously adding water soluble silicone oil and a soluble boron-containing compound into the hydro-upgrading catalyst carrier and preparing the modified hydro-upgrading catalyst carrier after thermal treatment. The modified carrier prepared by the method disclosed by the invention can provide more B acid centers, so that strong acid centers are reduced; the distribution of acid centers and hydrogenation activity centers can be regulated, so that a mutual coordination effect is realized, and the overall performance of the catalyst is improved; the modified carrier is suitable for being used as a diesel hydro-upgrading catalyst carrier.

Description

technical field [0001] The invention relates to a method for modifying a catalyst carrier for hydrogenation upgrading, in particular to a method for modifying a catalyst carrier for hydrogenation modification of diesel oil. Background technique [0002] For clean diesel production, existing technologies mainly include hydrorefining and medium-pressure hydroupgrading technologies. Hydrofining can reduce the sulfur content of modified diesel, but it has limited ability to improve cetane number and lower T95 temperature. Medium-pressure hydro-upgrading uses a hydro-upgrading catalyst containing molecular sieves (such as Y-type molecular sieves, β-molecular sieves) to properly crack aromatics in diesel oil, while reducing the content of sulfur and nitrogen impurities in diesel oil, and improving the tenacity of diesel oil. Hexane number and other comprehensive properties. However, if the current hydrogenation upgrading catalyst is used to improve the comprehensive performance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J38/02B01J38/52B01J35/10B01J29/90C10G45/12
Inventor 杨占林唐兆吉姜虹温德荣王继锋彭绍忠王平孙立刚
Owner CHINA PETROLEUM & CHEM CORP
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