Medium oil type hydrocracking catalyst and preparation method thereof

A hydrocracking and catalyst technology, which is applied in the field of medium oil type hydrocracking catalyst and its preparation, can solve the problems of large decrease in crystallinity, and achieve the effects of small unit cell parameters, improved utilization rate, and high silicon-to-aluminum ratio.

Pending Publication Date: 2022-08-05
PETROCHINA CO LTD +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Typical method is SiCl 4 Vapor-phase dealumination of silicon and (NH 4 ) 2 SiF 6 Liquid-phase dealumination for silicon supplementation, the other is simple dealumination using inorganic acid and molecular sieve, HCl, HNO 3 and H2SO 4 The dealumination of inorganic acids only depends on H + Dealumination, so the crystallinity drops greatly, the acid concentration and modification time must be strictly controlled during the modification process

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Medium oil type hydrocracking catalyst and preparation method thereof
  • Medium oil type hydrocracking catalyst and preparation method thereof
  • Medium oil type hydrocracking catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] In this example, the selection of organic acid components in the composite modifier was investigated. Five common organic acids, tartaric acid, citric acid, oxalic acid, succinic acid and malic acid, were used. type molecular sieve for processing. "USY" stands for commercial ultra-stable Y-type molecular sieve, "DAY-N", "DAY-H", "DAY-C", "DAY-P", "DAY-J" stand for citric acid, succinic acid, respectively , oxalic acid, malic acid, tartaric acid to treat the samples prepared by Y-type molecular sieve.

Embodiment 1-1

[0052] At room temperature, add 5g of industrial USY molecular sieve into a 250mL three-necked flask, and then add 25mL of 0.3mol·L -1 The citric acid solution was vigorously stirred at 80°C for 4h. After the reaction was completed, the obtained milky white suspension was filtered, washed to neutrality, and dried at 110° C. for 12 h to obtain acid-modified Y-type molecular sieve. See Table 1 for its specific surface area and pore structure. Sample number "DAY-N".

Embodiment 1-2 to Embodiment 1-5

[0054] The only difference from Example 1-1 is that the citric acid solution was replaced with a succinic acid solution, an oxalic acid solution, a malic acid solution, and a tartaric acid solution in sequence. The sample numbers are "DAY-H", "DAY-C", "DAY-P", "DAY-J".

[0055] Table 1 Specific surface area and pore structure data of molecular sieves

[0056]

[0057]

[0058] From the results in Table 1, it can be seen that the use of organic acid to treat Y-type molecular sieve can effectively remove molecular sieve framework aluminum, and all can play the role of pore expansion. The acid strength of several organic acids is from high to low: oxalic acid, citric acid, Tartaric acid, malic acid, succinic acid. Appropriate concentration ratios need to be used for different organic acids to avoid excessive dealumination causing the collapse of the molecular sieve framework. For example, in this example, the content of micropores in most of the samples is higher than tha...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a medium oil type hydrocracking catalyst, which comprises, by weight, 10-20% of a composite modified Y-type molecular sieve, 55-60% of amorphous silica-alumina and a binder, and 25-30% of an active metal based on oxide, the active metal is VIB group and VIIIB group metals, the molecular sieve is a composite modified Y-type molecular sieve, the binder is an amorphous silica-alumina binder, and the active metal is a composite modified Y-type molecular sieve. Wherein the mass ratio of the amorphous silica-alumina to the binder is 3 to 10; wherein the composite modified Y-type molecular sieve is obtained by modifying a Y-type molecular sieve with a composite dealumination modifier composed of an organic acid and a chelating agent. The invention also relates to a preparation method of the medium oil type hydrocracking catalyst. The composite modified Y-type molecular sieve provided by the invention is modified by adopting the composite dealumination modifier, so that the relatively high crystallinity of the composite modified Y-type molecular sieve is maintained, and the relatively high silica-alumina ratio of the composite modified Y-type molecular sieve is also ensured.

Description

technical field [0001] The invention relates to a hydrocracking catalyst for prolific middle distillate oil and a preparation method thereof. A modified Y-type molecular sieve prepared by an organic acid-chelating agent composite system is adopted. The prepared modified USY-type molecular sieve has a unit cell. With the structural characteristics of small parameters, large specific surface area, high silicon-aluminum ratio and good crystallinity, the medium oil type hydrocracking catalyst using this compound modified Y-type molecular sieve has the characteristics of producing more light distillate oil. Background technique [0002] The trend of crude oil is getting heavier and worse and the quality is getting worse and worse. Hydrocracking process is a very effective means to convert heavy and inferior heavy oil into light and high-quality products. Compared with catalytic cracking, hydrocracking process has high adaptability of raw materials and has become the core process ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J29/16C10G47/20
CPCB01J29/166C10G47/20B01J2229/34B01J2229/16B01J2229/18B01J2229/42
Inventor 余颖龙袁晓亮王晶晶王延飞赵梓贺张雅琳王燕张占全乔柯阎子峰
Owner PETROCHINA CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap