Preparation method for hydrocracking catalyst

A cracking catalyst, hydrocracking technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc. The effect of hydrogen consumption

Active Publication Date: 2016-06-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hydrocracking process has different requirements for the hydrogenation of heavy naphtha and tail oil. The hydrogenation of heavy naphtha produced by cracking will reduce the aroma potential of heavy naphtha, which is unfavorable for reforming units.
The hydrogenation of the tail oil as ethylene material is beneficial to reduce the aromatics content in the tail oil, and to improve the yield and operation cycle of the ethylene plant. However, the existing hydrocracking catalysts do not solve the above problems well.

Method used

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  • Preparation method for hydrocracking catalyst
  • Preparation method for hydrocracking catalyst
  • Preparation method for hydrocracking catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Take Y molecular sieve with a dry basis weight of 150g and dry basis weight of 250g macroporous alumina, mix evenly, add 3g / 100ml dilute nitric acid 200ml, roll and extrude, then dry at 120°C for 4h, and roast at 550°C After 3 hours, the carrier was obtained, and the number was T-1; (2) Mo-Co impregnation solution: take 241g of ammonium molybdate and 240g of cobalt nitrate and dissolve it in water to prepare 1000ml of impregnation solution. The active metal in the obtained impregnation solution is MoO 3 The calculated contents of CoO and CoO are 20g / 100ml and 6g / 100ml respectively, and the code is RY-1; take 300g of T-1 and soak it in 600ml RY-1 for 2h, then take out the carrier and dry it at room temperature for 2h, dry it at 100°C for 4h, and bake it at 500°C for 3h Obtain a carrier with low metal content, numbered CTL-1; (3) Take 300g of CTL-1 and place it in 600ml of n-heptane solvent for immersion for 2h, take it out and dry it at 110°C for 5 minutes to obtain C...

Embodiment 2

[0021] (1) Take Y molecular sieve with a dry basis weight of 200g and dry basis weight of 200g macroporous alumina and mix evenly, add 3g / 100ml dilute nitric acid 200ml for rolling and extrusion, then dry at 120°C for 4 hours, and roast at 550°C After 3 hours, the carrier was obtained, and the number was T-2; (2) Mo-Co impregnation solution: take 241g of ammonium molybdate and 240g of cobalt nitrate and dissolve it in water to prepare 1000ml of impregnation solution. The active metal in the obtained impregnation solution is MoO 3 and CoO content are calculated as 18g / 100ml and 5g / 100ml respectively, coded as RY-3; take 300g of T-2 and soak in 600ml RY-3 for 2h, then take out the carrier at room temperature for 2h, dry at 100°C for 4h, and roast at 500°C for 3h Obtain a low metal content carrier, numbered CTL-3; (3) Take 300g of CTL-3 and place it in 600ml of petroleum ether solvent for immersion for 2h, take it out and dry it at 90°C for 6 minutes to obtain CTL-4, the volume co...

Embodiment 3

[0023] (1) Take Y molecular sieve with a dry basis weight of 250g and dry basis weight of 150g macroporous alumina, mix evenly, add 3g / 100ml dilute nitric acid 200ml, roll and extrude, then dry at 120°C for 4h, and roast at 550°C After 3 hours, the carrier was obtained, and the number was T-3; (2) Mo-Co impregnation solution: take 180g of ammonium molybdate and 160g of cobalt nitrate and dissolve it in water to prepare 1000ml of impregnation solution. The active metal in the obtained impregnation solution is MoO 3 The calculated NiO content is 15g / 100ml and 4g / 100ml respectively, and the code is RY-5; take T-3300g and soak it in 600ml RY-5 for 2h, then take out the carrier and dry it at room temperature for 2h, dry it at 100°C for 4h, and roast it at 500°C for 3h Obtain a low metal content carrier, numbered CTL-5; (3) Take 300g of CTL-5 and place it in 600ml of toluene solvent for immersion for 3h, take it out and dry it at 150°C for 10 minutes to obtain CTL-6, the volume conte...

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Abstract

The invention discloses a preparation method for a hydrocracking catalyst carrier. The preparation method comprises the following steps: (1) preparing a hydrocracking catalyst carrier; (2) preparing a Mo-Co active metal salt solution, subjecting the hydrocracking catalyst carrier prepared in the step (1) to saturated impregnation and then carrying out drying and roasting; (3) subjecting the roasted carrier obtained in the step (2) to supersaturated impregnation in an organic solvent insoluble in water at first and then carrying out drying; and (4) preparing a Mo-Ni or W-Ni active metal salt solution, subjecting the carrier dried in the step (3) to saturated impregnation and then carrying out drying and roasting so as to obtain the finished hydrocracking catalyst. The hydrocracking catalyst prepared by the method can realize selective hydrogenation of cracking products, i.e., heavy naphtha and tail oil, reduces hydrogen consumption of equipment and produces high-quality heavy naphtha and tail oil products.

Description

technical field [0001] The invention relates to a preparation method of a hydrocracking catalyst, in particular to a preparation method of a chemical type hydrocracking catalyst. Background technique [0002] As the quality of crude oil becomes heavier and worse year by year, environmental protection regulations become increasingly strict, and the market demand for clean oil products continues to grow, making hydrogenation technology for the production of clean fuels more and more widely used. In the secondary processing technology of crude oil, distillate oil hydrocracking technology has the characteristics of strong adaptability of raw materials, high flexibility of production operation and product plan, and good product quality. It can directly convert various heavy and low-quality raw materials into High-quality jet fuel, diesel, lubricating oil base materials, chemical naphtha and tail oil steam cracking ethylene raw materials, etc., play the role of product distributio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/16C10G47/20
Inventor 柳伟杜艳泽王凤来刘昶秦波张晓萍
Owner CHINA PETROLEUM & CHEM CORP
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