Moderate hydrocracking process

A hydrocracking and mitigation technology, which is applied in the petroleum industry, refining hydrocarbon oil, etc., can solve the problems of shortened catalyst service life, loss of active components, and reduced processing capacity, so as to reduce construction investment and operating costs, and increase aromatics saturation Ability, the effect of increasing the depth of refinement

Active Publication Date: 2007-12-19
CHINA PETROLEUM & CHEM CORP +1
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Due to the high metal content of the catalyst prepared by this method, there is often a lack of sufficient interaction between the metal and alumina, resulting in poor catalyst strength
The active component is composed of a large amount of metals, and some internal metal components cannot be fully utilized during the formation of Ni-Mo or Ni-Mo-W powder, resulting in the loss of active components, which cannot be solved by simple bonding
CN1342102A discloses a mixed metal catalyst, which is obtained by co-precipitating three active metals. Its main disadvantage is that no coordination effect between different active metals has been found
Affected by the increasing weight and deterioration of raw material oil, the use of existing hydrocracking units increases the operating severity, which shortens the service life of the catalyst and is forced to reduce the processing capacity, or the new unit needs to increase the amount of catalyst used, and due to the operation Low pressure, hydrocracking tail oil generally can only provide feed for catalytic cracking

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Add 1000mL of water into the reaction tank, then add 40g of nickel chloride to dissolve, then add 52g of ammonium metatungstate to dissolve, then add 5g of zirconium oxychloride to dissolve, then add 10% ammonia water to form a gel until the pH value is 8, and then gel The temperature is 50°C, aging for 1 hour after forming the gel, and then filtering, adding 600ml of clean water, 16g of molybdenum trioxide and 32g of aluminum hydroxide to the filter cake, beating and stirring evenly, filtering, drying the filter cake at 80°C for 5 hours, and then extruding Molded, washed 3 times with clean water, dried at 120°C for 5 hours, and calcined at 500°C for 4 hours to obtain the final catalyst A. The composition and main properties are shown in Table 1.

Embodiment 2

[0036] According to the method of Example 1, according to the component content ratio of catalyst B in Table 1, add aluminum chloride, nickel chloride, sodium tungstate in the reaction tank, then add 16% ammonia water to form a gel, until the pH value is 9 , the gelling temperature is 80°C, aging for 3 hours after gelling, then filtering, washing the filter cake twice with 500mL clean water, adding clean water and molybdenum trioxide, beating and stirring evenly, filtering, and drying the filter cake at 70°C for 7 hours , and then extruded, washed twice with clean water, dried at 100°C for 8 hours, and calcined at 550°C for 3 hours to obtain the final catalyst B. The composition and main properties are shown in Table 1.

Embodiment 3

[0038] According to the method of Example 1, according to the component content ratio of catalyst C in Table 1, nickel nitrate, ammonium metatungstate, aluminum hydroxide, silica sol are added to the reaction tank, and then 12% ammonia water is added to form a gel until the pH The value is 10, the gelling temperature is 60°C, aging for 2 hours after gelling, then filtering, adding molybdenum trioxide to the filter cake, beating and stirring evenly, filtering, drying the filter cake at 120°C for 1 hour, and then extruding into strips, wet strips It was dried at 130°C for 3 hours and calcined at 600°C for 3 hours to obtain the final catalyst C, whose composition and main properties are shown in Table 1.

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Abstract

The moderate hydrocracking process has the inferior diesel oil fraction, VGO or other heavy fraction oil as the material oil hydrocracked under moderate condition to result in high quality products, especially high quality hydrocracked tail oil. The catalyst in the hydrocracking reaction region includes at least one kind of bulk phase catalyst comprising complex oxide NixWyOz and oxide MoO3 in the weight ratio 0.1-10 and accounting for 40-100 wt% of total catalyst. The present invention facilitates the hydrocracking operation, increases the treating capacity of the apparatus, increases the service life of the catalyst and raises the quality of the product.

Description

technical field [0001] The invention relates to a mild hydrocracking method, in particular to a mild hydrocracking method using a catalyst with strong hydrogenation performance to produce clean light oil and high-quality tail oil from inferior raw material oil. Background technique [0002] With the increasingly stringent environmental regulations, the quality requirements for motor fuel are getting higher and higher. Motor vehicle exhaust is an important part of urban air pollution sources. Therefore, the quality requirements for urban motor vehicle motor fuels are more stringent. The vast majority of motor fuel is obtained from petroleum, which is obtained through various processing methods. Among these processing methods, hydrocracking process is the most direct and effective method to produce high-quality products from inferior heavy raw material oil. Therefore, hydrocracking technology has been paid attention to and developed rapidly all over the world. [0003] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G45/22
Inventor 刘涛赵玉琢李宝忠吴子明孙洪江张学辉贝耀明王群
Owner CHINA PETROLEUM & CHEM CORP
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