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Preparation method of hydrocracking catalyst composition

A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as ammonia nitrogen pollution, environmental pollution, ammonia nitrogen environmental pollution, etc., to improve acidity and acidity distribution, avoid Ammonia nitrogen pollution, good metal dispersion effect

Active Publication Date: 2015-04-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing co-precipitation methods for preparing catalysts use NH3·H2O as a precipitating agent, which will produce a large amount of wastewater containing ammonia and nitrogen, causing pollution to the environment
[0006] US 3954671 disclosed hydrocracking catalyst, US 4313817 disclosed hydroconversion catalyst, CN1253988A disclosed nitrogen-resistant type prolific middle distillate hydrocracking catalyst, The disclosed heavy hydrocarbon hydrocracking catalyst of CN1253989A, these catalysts are prepared by the co-gel method, and the basic precipitant used is all ammonia, although it can be used to process the heavy hydrocarbon prolific middle distillate performance is relatively Ideal hydrocracking catalyst, but there are no effective control measures for the pollution caused by ammonia nitrogen to the environment
CN101239324A discloses a method for preparing a high-activity, high-medium oil type hydrocracking catalyst by a co-gel method. The precipitant uses a weakly basic ammonia compound, and there is still the problem of ammonia nitrogen pollution
[0007] CN101172261A discloses a method for preparing a hydrogenation catalyst using a sodium metaaluminate alkali solution as a precipitant, and the precipitation mainly comes from metaaluminate ions and hydroxide ions. In this way, larger precipitated particles are easily formed during the precipitation process, and the cohesiveness of the catalyst material is poor. At the same time, the specific surface area and strength of the catalyst are reduced, which will affect the performance of the catalyst.
If sodium metaaluminate replaces aluminum chloride, aluminum nitrate, aluminum sulfate and other soluble inorganic aluminum salts as the aluminum source, a large amount of NO3-, Cl-, SO42- and other hetero ions, the prepared composite oxide precursors have poor peptization and difficult to form metal materials
Another difficulty in the preparation of catalysts by the co-precipitation method is that the grain size of the metal mixture obtained by different aluminum sources and precipitants varies greatly, which in turn has a great impact on the specific surface area and strength of the catalyst.
In order to reduce pollution, how to solve the problem of poor cohesion of materials produced by the bulk phase cleaning preparation method using sodium metaaluminate instead of ammonia water as precipitant

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Concrete preparation steps are as follows:

[0028] (1) Prepare acidic solution A: prepare 200 ml of nickel chloride solution containing NiO of 150 g / l, containing WO 3 75g / l ammonium metatungstate 1000ml with ZrO 2 150ml of 125g / l zirconium oxychloride solution was mixed in a 5 liter container and diluted with 800ml of clean water. Formulated with SiO 2 550 milliliters of dilute water glass solution of 80 g / l is added in the above mixed salt solution under stirring condition;

[0029] (2) Configure alkaline sodium metaaluminate solution B: configure Al 2 o 3 The concentration is 30g / l alkaline solution 3000ml;

[0030] (3) Add 1000mL water into the gelling tank, and pass CO2 with a volume concentration of 85v% into the clean water 2 , so that the CO in the gas in the tank 2 The concentration is 80v%, sealed tank;

[0031] (4) Put solution A and solution B into the glue tank in parallel to form gel, keep the temperature of gel formation at 50°C, and control th...

Embodiment 2

[0035] According to the method of embodiment 1, according to the component content proportioning of catalyst B in table 1, prepare catalyst B, just transfer the gelling temperature to 65 ℃, to adjust the pore structure, the pH value control is 7.8 at the end, catalyst composition and The main properties are shown in Table 1.

Embodiment 3

[0037] Catalyst C was prepared according to the method of Example 2, according to the composition ratio of catalyst C in Table 1, except that zirconium oxychloride was replaced by titanium tetrachloride. The catalyst composition and main properties are shown in Table 1.

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Abstract

The invention discloses a preparation method of a hydrocracking catalyst composition. The method comprises the steps of preparing an acidic mixed solution A containing hydrogenation reactive metals and silicon, preparing a sodium metaaluminate alkaline solution B, adding clear water to a reaction tank, and then filling CO2 into the clear water; and then adding the acidic mixed solution A and the alkaline solution B to the reaction tank in parallel to prepare gel, then adding turbid liquid of a Y type molecular sieve, mixing the substances uniformly, filtering the obtained mixture, drying the obtained filter cake, and then forming, washing, drying and roasting the filter cake, thus preparing the hydrocracking catalyst composition. The hydrocracking catalyst composition prepared by the method has the advantages of big specific surface area, big pore volume, high strength and high effective utilization rate of reactive metal components, and is especially suitable for a hydrocracking process for producing more middle distillates.

Description

Technical field [0001] The present invention involves a preparation method for the hydrogenation catalyst composition that treats heavy hydrocarbons, especially the preparation method of high -active high -middle oil -type hydrogenation catalyst composition. Background technique [0002] At present, there are insufficient oil resources in the world, the quality of crude oil has deteriorated year by year, the demand for intermediate distillation oil has increased, the upgrading of petrochemical products and the increasingly stricter of environmental protection regulations have greatly promoted the light quality of heavy oil, and constituted the accelerated development of hydrogen degradation.Strong motivation of technology.The main features of hydrogenation and cracking technology are strong adaptability of raw materials, high product schemes and destination products, good product quality and high added value, and can directly produce a variety of high -quality petroleum products ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/16C10G47/20
Inventor 王海涛徐学军冯小萍王继锋刘东香
Owner CHINA PETROLEUM & CHEM CORP
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