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Carrier containing SBA-15 molecular sieve and preparation method and application of carrier

A molecular sieve and carrier technology, which is applied in molecular sieve catalysts, chemical instruments and methods, hydrocarbon oil cracking, etc., can solve the problems of complex preparation process, inability to connect pores, and unfavorable material transmission, so as to avoid excessive reaction, good product selectivity, Effect of improving liquid yield

Active Publication Date: 2018-05-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, although the SBA-15 / Y composite molecular sieve has a mesoporous structure as a whole, the matching degree between the mesoporous SBA-15-microporous Y in different channels in the composite molecular sieve is poor, which is not conducive to the transmission of materials. The pores of 15 / Y composite molecular sieve and amorphous silica-alumina cannot be connected, and cannot really play the role of channels. In addition, there are problems such as complicated preparation process and high cost.

Method used

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  • Carrier containing SBA-15 molecular sieve and preparation method and application of carrier
  • Carrier containing SBA-15 molecular sieve and preparation method and application of carrier
  • Carrier containing SBA-15 molecular sieve and preparation method and application of carrier

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Take commercially available NH 4 NaY molecular sieve (relative crystallinity 94%, unit cell constant 2.470nm, SiO 2 / Al 2 o 3 =5.0, Na 2 O=2.3w%, dry basis is 75%) 300g is placed in the hydrothermal treatment furnace, the temperature is raised by power supply, the hydrothermal treatment temperature is raised to 600 °C, and the pressure of the control system (water vapor partial pressure P H2O and ammonia partial pressure P NH3 sum) at 0.1MPa, P NH3 / (P NH3 +P H2O )=0.25; carry out hydrothermal treatment for 3.0 hours. Take 200 g of the molecular sieve sample after hydrothermal treatment and use 0.25M nitric acid and 1.5M NH 4 NO 3 2.0L of the mixed solution was chemically dealuminated at 95°C for 1.2 hours, suction filtered, and the reaction was repeated once under the same conditions. The filter cake was washed until the pH of the filtrate = 6.8, and the filter cake was placed in a hydrothermal treatment furnace. The temperature of the hydrothermal treatment w...

Embodiment 2

[0027] Take commercially available NH 4 NaY molecular sieve (relative crystallinity 94%, unit cell constant 2.470nm, SiO 2 / Al 2 o 3 =5.0, Na 2 O=2.3w%, dry basis is 75%) 600g is placed in the hydrothermal treatment furnace, the temperature is raised by power supply, and the hydrothermal treatment temperature is raised to 630°C, and the pressure of the control system (water vapor partial pressure P H2O and ammonia partial pressure P NH3 sum) at 0.08MPa, P NH3 / (P NH3 +P H2O )=0.3; carry out hydrothermal treatment for 2.0 hours. Take 200g of the molecular sieve sample after hydrothermal treatment and use 0.1M nitric acid and 1.0M NH 4 NO 3 2L of the mixed solution was chemically dealuminated at 90°C for 1.0 hour, suction filtered, and the reaction was repeated twice under the same conditions, the filter cake was washed until the pH of the filtrate = 6.5, and the filter cake was placed in a hydrothermal treatment furnace, and the hydrothermal treatment temperature was c...

Embodiment 3

[0031] Take the commercially available pure silicon mesoporous molecular sieve SBA-15300g hydrothermally synthesized under acidic conditions using triblock copolymer P123 as the template agent and orthosilicate as the silicon source, and calcinate at 550°C for 6 hours to remove the template agent to obtain the mesoporous molecular sieve D used in the present invention. Its properties are measured as follows: pore diameter 11.2nm, pore volume ≥ 0.82ml / g, specific surface 783m 2 / g.

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Abstract

The invention provides a carrier containing an SBA-15 molecular sieve and a preparation method and application of the carrier. The preparation method of the carrier containing the SBA-15 molecular sieve comprises the following steps: mechanically mixing a modified Y molecular sieve, an SBA-15 molecular sieve of a non-roasted template agent and a bonding agent prepared by amorphous SiO2-Al2O3 and dilute nitric acid solution peptized aluminum oxide, performing rolling and forming, and then, performing drying and roasting to obtain a catalyst carrier. The carrier is suitable for preparing a middle oil type hydrocracking catalyst, and the obtained catalyst has high catalytic cracking activity and high middle distillate selectivity when being used for treating inferior distillate with a high dry point.

Description

technical field [0001] The invention relates to a carrier containing SBA-15 molecular sieve and its preparation method and application. The carrier can be used as a carrier for preparing a hydrocracking catalyst for producing middle distillate oil. technical background [0002] For hydrocracking catalysts, the carrier is a dispersed place for carrying acidic cracking components and providing hydrogenation active components, and a reaction platform for reactants to contact with active sites and react, and the products are hydrogenated and saturated. [0003] With the gradual realization of the Chinese dream, people's quality of life is getting higher and higher. While the demand for high-quality middle distillates is increasing day by day, the requirements for the quality of its oil products are also becoming increasingly stringent. The quantity and quality of petroleum primary processing can not meet people's needs. The secondary processing of heavy distillate oil into high...

Claims

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Application Information

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IPC IPC(8): B01J29/08B01J29/16C10G47/20
CPCB01J29/005B01J29/0308B01J29/084B01J29/166B01J2029/081B01J2229/14B01J2229/16B01J2229/36C10G47/20
Inventor 阮彩安杜艳泽秦波柳伟张晓萍
Owner CHINA PETROLEUM & CHEM CORP
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