Catalytic cracking catalyst for cracking coker wax oil and preparation method thereof

A technology of catalytic cracking and coking wax oil, which is applied in the direction of catalyst activation/preparation, catalytic cracking, physical/chemical process catalysts, etc., and can solve problems such as unconsidered impact

Active Publication Date: 2021-04-30
PETROCHINA CO LTD
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large molecular size of the basic compound, when the catalyst prepared by the above-mentioned patent method reacts with the basic nitrogen compound, it will inevitably prevent other hydrocarbon molecules from contacting the acidic center of the catalyst, and the above-mentioned patent does not consider aromatic hydrocarbons and non-basic nitrogen in coking wax oil. Effect of Compounds on Catalytic Cracking

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
  • Catalytic cracking catalyst for cracking coker wax oil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Preparation of Y-type molecular sieve modified by rare earth, phosphorus and magnesium:

[0041] Take 1000 grams of NaY molecular sieves (dry basis), beat with 10 kilograms of deionized water, add 300 grams of ammonium sulfate, adjust the pH value to 3.5, exchange at 90 ° C for 1 hour, filter and wash with water, and then mix the filter cake with 100 grams of chlorine Lanthanum chloride (calculated as rare earth oxide) was mixed, and roasted at 650°C and 30% steam for 2 hours to obtain a rare earth modified molecular sieve; the roasted sample obtained above was beaten with 5 kg of deionized water, and 50 grams of hydrogen phosphate was added Diammonium (in terms of phosphorus), adjusting the pH value to 4.0, exchanged at 80°C for 1 hour, filtered and washed, and then the filter cake was roasted at 600°C for 1 hour to obtain a phosphorus rare earth modified molecular sieve; the above phosphorus rare earth modified molecular sieve was mixed with Mix and beat 8 kg of deion...

Embodiment 2

[0047] Preparation of Y-type molecular sieve modified by rare earth, phosphorus and magnesium:

[0048] Take 1000 grams of NaY molecular sieves (dry basis), beat with 50 kilograms of deionized water, add 150 grams of ammonium chloride, adjust the pH value to 2.1, exchange for 4 hours at 45 ° C, filter and wash with water, then filter cake with 100 grams of Lanthanum nitrate and 200 grams of cerium nitrate (calculated as rare earth oxide) were mixed, and roasted at 400 ° C for 3 hours to obtain a rare earth modified molecular sieve; the roasted sample obtained above was beaten with 50 kg of deionized water, and 100 grams of ammonium phosphate was added (in terms of phosphorus), adjust the pH value to 2.0, exchange at 130°C for 0.5 hours, filter and wash with water, and then roast the filter cake at 600°C and 100% steam for 0.5 hour to obtain phosphorus rare earth modified molecular sieves; The modified molecular sieve was mixed with 50 kg of deionized water and 50 g of magnesiu...

Embodiment 3

[0054] Preparation of Y-type molecular sieve modified by rare earth, phosphorus and magnesium:

[0055] Take 1000 grams of NaY molecular sieve (dry basis), beat with 1 kilogram of deionized water, add 1000 grams of ammonium carbonate, adjust the pH value to 5.8, exchange at 130 ° C for 0.5 hours, filter and wash with water, and then filter the cake with 10 grams of nitric acid Cerium (in terms of rare earth oxides) was mixed, and roasted for 1 hour at 700°C and 50% steam to obtain a rare earth modified molecular sieve; the roasted sample obtained above was beaten with 2 kg of deionized water, and 10 grams of phosphoric acid (with Phosphorus meter), adjusting the pH value to 5.9, exchanged at 40°C for 3 hours, filtered and washed with water, and then the filter cake was roasted at 300°C and 50% steam for 3 hours to obtain a phosphorus rare earth modified molecular sieve; the above phosphorus rare earth modified molecular sieve Mix and beat with 2 kg of deionized water and 2 g o...

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 provides a cracking coking wax oil catalytic cracking catalyst and a preparation method thereof. The catalyst contains 15-70wt% molecular sieve, 15-60wt% clay, 8-30wt% pseudo-boehmite, 3-20wt% binder, and its preparation method comprises the following steps: rare earth, phosphorus, magnesium composite modification Y type The preparation of the molecular sieve is characterized in that the phosphorus modification of the molecular sieve is before the magnesium modification; then the Y-type molecular sieve containing rare earth, phosphorus and magnesium modification, clay, pseudo-boehmite and binder are mixed and beaten, and then spray-dried in sequence , washing, filtering and drying steps to prepare the catalyst of the present invention. The catalyst provided by the invention can reduce the adsorption capacity of nitrogen compounds and aromatics in the coker gas oil and the acid center of the catalyst, and reduce the negative impact of the coker gas oil on the catalytic cracking reaction. When the conversion rate increases and the heavy oil decreases, the catalyst provided by the invention The catalyst has excellent coke selectivity.

Description

technical field [0001] The invention relates to a catalytic cracking catalyst and a preparation method thereof, in particular to a cracking coking wax oil catalyst and a preparation method thereof. Background technique [0002] Delayed coking is currently an important residue upgrading process. With crude oil quality deteriorating and prices depressed, delayed coking has become more popular in current refining schemes due to the flexibility in processing feedstock. Delayed coking processing capacity has increased dramatically in China, reaching 110 million tons in 2010. Coker gas oil (CGO) is the main product of the delayed coking process, accounting for 20-30% by weight of the coking product, and the utilization rate of coker gas oil directly affects the economic benefit of the refinery. [0003] In foreign countries, coker wax oil is used as raw material for catalytic cracking after hydrotreating. For example, in the United States, more than 50% of FCC feedstocks are hy...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/08B01J37/30B01J37/08B01J37/28C10G11/05
CPCB01J29/088B01J37/088B01J37/28B01J37/30C10G11/05C10G2300/202
Inventor 谭争国潘志爽袁程远张海涛高雄厚张忠东李雪礼段宏昌黄校亮高永福郑云锋孙书红张君屹
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