Hydrocracking catalyst preparation method

A hydrocracking and catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as environmental pollution, and achieve the effect of reducing acid consumption, reducing emissions, and improving operation.

Active Publication Date: 2016-05-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The discharge of pickling solution and the roasting of acid radicals in the catalyst during the preparation process have caused environmental pollution.

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) The ammonium Y-type molecular sieve was subjected to hydrothermal treatment for 3 hours at a temperature of 550°C, a pressure of 0.2MPa, and a water inflow of 200ml / h;

[0028] (2) Wash the molecular sieve obtained in step (1) in a mixed solution of 0.6mol / L nitric acid and 0.2mol / L ammonium nitrate for 2 hours, then add alumina powder and amorphous silica-alumina powder, and then fully roll it Shaped, and then dried at a constant temperature of 100°C for 12 hours. Then calcined at 550°C for 6 hours to obtain a catalyst carrier;

[0029] (3) preparing a metal impregnation solution of W and Ni, impregnating the hydrocracking catalyst carrier obtained in step (2), then filtering, drying at a constant temperature of 100°C for 12 hours, and finally roasting at a constant temperature of 550°C for 6 hours, A hydrocracking catalyst C1 is obtained. Catalyst properties are listed in Table 1.

[0030] The properties of the amorphous silicon-alumina described in step (2) ar...

Embodiment 2

[0032](1) Hydrothermally treat the ammonium Y-type molecular sieve for 1 hour at a temperature of 650°C, a pressure of 0.1MPa, and a water inflow of 200ml / h;

[0033] (2) Wash the molecular sieve obtained in step (1) in a mixed solution of 0.3mol / L nitric acid and 0.8mol / L ammonium nitrate for 1.5 hours, then add alumina powder and amorphous silica-alumina powder, and then fully roll it Shaped, and then dried at a constant temperature of 100°C for 12 hours. Then calcining at 540° C. for 2 hours to obtain a catalyst carrier;

[0034] (3) preparing a metal impregnation solution of W and Ni, impregnating the hydrocracking catalyst support obtained in step (2), then filtering, drying at a constant temperature of 120°C for 6 hours, and finally roasting at a constant temperature of 540°C for 8 hours, A hydrocracking catalyst C4 is obtained. Catalyst properties are listed in Table 1.

[0035] The properties of the amorphous silicon-alumina in step (1) are as follows: the particle ...

Embodiment 3

[0037] (1) The ammonium Y-type molecular sieve is subjected to hydrothermal treatment for 2 hours at a temperature of 600°C, a pressure of 0.1MPa, and a water inflow of 200ml / h;

[0038] (2) Wash the molecular sieve obtained in step (1) in a mixed solution of 0.6 mol / L nitric acid and 0.6 mol / L ammonium nitrate for 1 hour, then add alumina powder, and then fully roll it into shape, and then heat it at 100°C Dry at constant temperature for 12 hours. Then calcining at 550° C. for 4 hours to obtain a catalyst carrier;

[0039] (3) preparing Mo and Co metal impregnation solutions, impregnating the hydrocracking catalyst carrier obtained in step (2), then filtering, drying at a constant temperature of 110°C for 6 hours, and finally roasting at a constant temperature of 480°C for 8 hours, A hydrocracking catalyst C3 is obtained. Catalyst properties are listed in Table 1.

[0040] The specific surface area of ​​the alumina powder described in step (1) is 470m 2 / g, the pore volum...

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Abstract

The present invention discloses a hydrocracking catalyst preparation method, which comprises: (1) carrying out a hydrothermal treatment on an ammonium type Y molecular sieve; (2) washing the molecular sieve obtained in the step (1) in a mixed solution of nitric acid and ammonium nitrate, adding alumina powder and/or amorphous silicon-aluminum powder, uniformly mixing, completely rolling, molding, drying, and calcining to obtain a catalyst carrier; and (3) impregnating the catalyst carrier obtained in the step (2) with an impregnating solution containing an active metal component, drying, and calcining to obtain the hydrocracking catalyst. According to the present invention, the isomerization performance of the prepared catalyst is improved, and the preparation process has characteristics of simple operation, low cost, and environmental protection.

Description

technical field [0001] The invention relates to a method for preparing a hydrocracking catalyst. The preparation process of the method has the characteristics of simpler operation, lower preparation cost and more environmental protection. Background technique [0002] Hydrocracking technology has the characteristics of strong adaptability to raw materials, great flexibility in production operations and product plans, and good product quality. It can directly convert various heavy and low-quality feedstocks into high-quality jet fuel, diesel, and lubricating oil base materials that are urgently needed by the market. As well as chemical naphtha and tail oil steam cracking raw materials for ethylene production, it has become one of the most important heavy oil deep processing processes in modern oil refining and petrochemical industries, and has been increasingly widely used at home and abroad. [0003] The hydrocracking catalyst is a dual-functional catalyst composed of hydrog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/16C10G47/20
Inventor 秦波杜艳泽柳伟张晓萍王凤来
Owner CHINA PETROLEUM & CHEM CORP
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