Sulfuration type hydrocracking catalyst and preparation method thereof

A cracking catalyst and hydrocracking technology, which is applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve problems such as environmental pollution, delayed start-up time, long vulcanization process, etc., and achieve improved interaction and improved The effect of using performance

Active Publication Date: 2016-12-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional catalyst sulfidation method adopts "in-vessel" pre-sulfurization, that is, the catalyst in the oxidized state is first loaded into the reactor, and then hydrogen and sulfide are fed into the reactor during the continuous heating process for pre-sulfurization. This method brings The following problems: (1) special vulcanization equipment should be set up on the hydrogenation unit; (2) the vulcanization agent added in the vulcanization process and the water and hydrogen sulfide generated by the reaction can easily cause corrosion of the high-pressure reactor and related equipment, resulting in Equipment damage and potential safety hazards; (3) The vulcanization process is longer, delaying the start time
(4) The vulcanizing agent used is f

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Dissolve nickel chloride and aluminum chloride solutions in clean water respectively to prepare mixed solution A. The weight concentration of NiO in mixed solution A is 23g / L, Al 2 o 3 The weight concentration is 5g / L. Dissolve ammonium metatungstate and aluminum chloride solution in clean water respectively, add dilute water glass solution to prepare mixed solution B, and WO in mixed solution B 3 The weight concentration is 20g / L, Al 2 o3 The weight concentration is 18g / L, SiO 2 The weight concentration is 30g / L. Add ammonia water with a concentration of 10% to solution A under stirring, keep the gelling temperature at 55°C, control the pH value at 7.6 at the end, and control the gelling time at 60 minutes to generate slurry I containing nickel and aluminum precipitates. Add 1000mL of clean water into the reaction tank, add 10% ammonia water and solution B into the reaction tank in parallel, keep the gelling temperature at 55°C, and control the pH value at 7.6 durin...

Embodiment 2

[0049] According to the method of embodiment 1, press the component content ratio of catalyst B in table 1, add nickel nitrate, aluminum nitrate solution in dissolving tank 1, prepare working solution A, add aluminum nitrate, partial tungsten in dissolving tank 2 After dissolving ammonium acid in clean water, add dilute water glass to prepare working solution B. Add ammonia water with a concentration of 15% to solution A under stirring, keep the gelling temperature at 45°C, control the pH value at 8.0 at the end, and control the gelling time at 60 minutes to generate slurry I containing nickel and aluminum precipitates. Add 800mL of clean water into the reaction tank, add 15% ammonia water and solution B into the reaction tank in parallel, keep the gelling temperature at 50°C, and control the pH value at 8.2 during the gelling reaction process, and the gelling time It is controlled within 60 minutes to generate slurry II containing tungsten, silicon and aluminum precipitates. ...

Embodiment 3

[0051] According to the method of embodiment 1, press the component content ratio of catalyst C in table 1, add nickel chloride, aluminum chloride solution in dissolving tank 1, prepare working solution A, add aluminum chloride in dissolving tank 2 1. After dissolving ammonium metatungstate in clean water, add dilute water glass to prepare working solution B. Add ammonia water with a concentration of 10% to solution A under stirring, keep the gelling temperature at 55°C, control the pH value at 7.6 at the end, and control the gelling time at 90 minutes to generate slurry I containing nickel and aluminum precipitates. Add 900mL of clean water into the reaction tank, add 10% ammonia water and solution B into the reaction tank in parallel, keep the gel forming temperature at 45°C, and control the pH value at 8.0 during the gel forming reaction process. The time is controlled at 60 minutes to generate slurry II containing tungsten, silicon and aluminum precipitates. The above two...

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Abstract

The invention discloses a sulfuration type hydrocracking catalyst and a preparation method thereof. The catalyst is a bulk phase hydrocracking catalyst and comprises sulfides of hydrogenation active metal components W and Ni, aluminum oxide, silicon oxide and molecular sieves, wherein ratio of the weight content of the sulfide of a surface phase active metal component W (by WS2 ) to that of the sulfide of a body phase active metal component W is (2.0 to 1) to (7.0 to 1), and the ratio of the weight content of the sulfide of a surface phase active metal component Ni (by NiS ) to that of the sulfide of a body phase active metal component Ni is (1.5 to 1) to (5.5 to 1). The catalyst is particularly suitable for being used in single-segment hydrocracking technological processes, and has the advantages of being high in liquid yield, good in product quality and the like.

Description

technical field [0001] The invention relates to a sulfurized hydrocracking catalyst for treating heavy hydrocarbons and a preparation method thereof. Background technique [0002] At present, the shortage of petroleum resources in the world, the quality of crude oil is deteriorating year by year, the demand for middle distillate oil is increasing, the upgrading of petrochemical products and the stricter environmental regulations have greatly promoted the transformation of heavy oil into lighter products, and constituted an accelerated development of hydrogenation. The power of technology. The main features of hydrocracking technology are strong adaptability of raw materials, high selectivity of product plans and target products, good product quality and high added value, and can directly produce a variety of high-quality petroleum products (such as gasoline, jet fuel, diesel oil, lubricating oil base Oil, etc.) and high-quality chemical raw materials (such as benzene, tolu...

Claims

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Application Information

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IPC IPC(8): B01J29/16C10G47/20
Inventor 王海涛刘东香徐学军冯小萍
Owner CHINA PETROLEUM & CHEM CORP
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