Catalytic cracking multifunctional metal trapping agent and preparation method thereof

A metal trapping agent, multi-functional technology, applied in the direction of catalytic cracking, catalyst protection, chemical instruments and methods, etc., can solve the problems of poor distribution of conversion products, low activity of metal trapping agents, etc., to reduce coke yield, Good metal trapping effect, the effect of improving catalytic cracking effect

Pending Publication Date: 2022-05-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, metal scavengers tend to cause poor distribution of conversion products due to their inactivity

Method used

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  • Catalytic cracking multifunctional metal trapping agent and preparation method thereof
  • Catalytic cracking multifunctional metal trapping agent and preparation method thereof
  • Catalytic cracking multifunctional metal trapping agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0045] In the metal trapping agent provided by the present invention, the high specific heat capacity matrix material, in the first embodiment, does not contain boron compounds, based on the weight of the high specific heat capacity matrix material, the high specific heat capacity matrix material contains Al 2 o 3 5-95% by weight of alumina and MnO 2 5-95% by weight of manganese oxide, for example, the high specific heat capacity matrix material is mainly composed of 15-70% by weight or 20-65% by weight or 30-61% by weight of manganese oxide and 30-85% by weight or 35- 80% by weight or 39-70% by weight of alumina. The specific surface area of ​​the high specific heat capacity matrix material can be 180-300m 2 g -1 For example 200-250m 2 g -1 or 220-245m 2 g -1 ; The pore volume of the high specific heat capacity matrix material is 0.35-0.75 such as 0.4-0.65cm 3 g -1 ; The average pore diameter of the high specific heat capacity matrix material is 5-13nm, such as 6-11n...

preparation example 1

[0100] This example illustrates the preparation of a high specific heat capacity matrix material.

[0101] Concentration 300gAl 2 o 3 / L Al 2 (SO 4 ) 3 solution with CO 3 2- The ammonium carbonate solution with a concentration of 0.10 mol / L was mixed at 20° C. to form a colloid, and the obtained colloid had a pH value of 7.5, and a slurry A was obtained. To a concentration of 450gMnO 2 / L MnCl 2 Add hydrochloric acid to the solution to control the pH value = 3.5, then add urea to the solution, the molar ratio of urea to manganese ions is 2, and stir at room temperature for 30 minutes to obtain solution B. Add solution B to slurry A, stir and age at 80°C for 4h, wait until the temperature of the system drops to room temperature, rinse with deionized water until the washed water is neutral, dry at 120°C for 12h to obtain the matrix material precursor, and then Calcined at 550°C for 6 hours, and cooled to room temperature with the furnace to obtain the matrix material wi...

preparation example 2-4

[0104] Prepare high specific heat capacity matrix materials AM-2 to AM-4 according to the method of Preparation Example 1, the difference is that the raw material ratio, preparation condition parameters, elemental composition of the product, specific heat capacity, specific surface area, pore volume and average pore diameter are listed in Table 1 , wherein the solution B is added to the slurry A, and then boron nitride is added, and then the aging is carried out.

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Abstract

The invention provides a catalytic cracking multifunctional metal trapping agent and a preparation method thereof. The metal trapping agent contains 1-60 wt% of a high specific heat capacity matrix material, 40-99 wt% of a heat-resistant inorganic oxide and 0-50 wt% of clay, wherein the high specific heat capacity matrix material contains at least 5% by weight of manganese oxide, and the specific heat capacity of the high specific heat capacity matrix material is 1.3-2.0 J/(g.K). The preparation method of the high specific heat capacity matrix material comprises the steps of forming a mixture from preparation raw materials comprising a manganese source, and optionally washing and/or drying and/or roasting. The metal trapping agent provided by the invention can be used for processing hydrocarbon oil raw materials which are high in carbon residue value and contain various metals, can effectively trap the metals in the raw materials, is environment-friendly and pollution-free in components, and has good economic benefits.

Description

technical field [0001] The invention relates to a catalytic cracking multifunctional metal trapping agent and a preparation method thereof. Background technique [0002] With the increasing shortage of oil resources and rising crude oil prices, major refineries reduce costs through deep processing of heavy oil and use inferior oil to maximize benefits. Catalytic cracking is an important means of heavy oil processing. [0003] However, the content of heavy metals (such as vanadium and nickel) in low-quality crude oil is generally high. Especially in recent years, due to the heavy and poor quality of feedstock oil and the processing of opportunity crude oil, metal poisoning of catalytic cracking catalysts has become increasingly common. Numerous research results have shown that once metals such as iron and nickel are deposited on the surface, they are difficult to migrate, and they will interact with elements such as silicon, aluminum, vanadium, and sodium to form a low-meltin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/08B01J20/06B01J20/02B01J20/30B01J33/00C10G11/02C10G25/00
CPCB01J20/12B01J20/08B01J20/06B01J20/0248B01J20/3078B01J33/00C10G11/02C10G25/003C10G2300/205
Inventor 刘倩倩林伟达志坚宋海涛陈振宇
Owner CHINA PETROLEUM & CHEM CORP
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