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Residual oil hydrotreating method

A technology for hydrogenation and treatment of residual oil, which is applied in the treatment of hydrocarbon oil, petroleum industry, refined hydrocarbon oil, etc. It can solve the problems that the performance of carbon removal needs to be further improved, achieve good catalyst stability, speed up the rate, and promote fracture Effect

Pending Publication Date: 2022-06-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The active metal components in the catalyst are still loaded on the catalyst carrier by the conventional impregnation method, and the carbon removal performance of the catalyst still needs to be further improved.

Method used

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  • Residual oil hydrotreating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Add 16.0 g MoS to QP-3 2 , heated at 85 °C for 3.0 h, and the liquid obtained after filtration was designated as QL-3.

[0085] Add 35.0 g of nickel acetate to QL-3, stir well for 20 min, then add 3.0 g of dodecylphenol ethoxylate-10, stir well for 20 min, and the colloid obtained is designated as QJ-3.

[0086] S-1 was impregnated with QJ-3, air-dried for 12.0 h, and dried at 140 °C for 4 hours. The obtained catalyst was designated as CA-3.

[0087] Example 4

[0088] Take 43.5 g of molybdenum trioxide, 4.6 g of ammonium dihydrogen phosphate, and 200 g of ionized water, heat at 80 ºC for 2.0 h, and the resulting solution is designated as QP-4.

Embodiment 2

[0090] Add 35.0 g of nickel acetate to QL-4, stir well for 20 min, then add 3.0 g of dodecylphenol ethoxylate-10, stir well for 20 min, and the colloid obtained is designated as QJ-4.

[0091] S-1 was impregnated with QJ-4, air-dried for 12.0 h, and dried at 140 °C for 4 hours. The obtained catalyst was designated as CA-4.

[0092] Example 5

Weigh 1000.0g of alumina dry rubber powder, add 10.0g of citric acid and 10.0g of safflower powder, mix well, add 800.0g of aqueous solution containing 1.0% nitric acid mass fraction, roll for 15.0 min, and use a clover with a diameter of 2.0mm Orifice extruded strips. After drying at 120 °C for 4.0 h, it was calcined at 600 °C for 4.0 h. The calcined carrier is denoted as S-2.

[0093] Weigh 74.2 g of ammonium heptamolybdate tetrahydrate, 7.5 g of 85% mass fraction of phosphoric acid, 200 g of deionized water, and heat at 80 °C for 2.0 h. The resulting solution is designated as QP-5.

[0094] Add 24.0 g of 25wt% acetaldehyde aqueous ...

Embodiment 3

[0096] S-2 was impregnated with QJ-5, air-dried for 12.0 h, and dried at 140 °C for 4 hours. The obtained catalyst was designated as CN-1.

[0097] Example 6

The preparation method of carrier S-2 is the same as that in Example 5.

[0098] Weigh 59.7 g of ammonium tetramolybdate dihydrate, 6.0 g of ammonium dihydrogen phosphate, and 200 g of deionized water, heat at 80 ºC for 2.0 h, and record the obtained solution as QP-6.

[0099] Add 24.0 g fructose to QP-6, heat at 80 °C for 2.0 h, and the obtained liquid is designated as QL-6.

[0100] Add 40.0 g of nickel acetate and 10.0 g of amine triacetic acid to QL-6, stir thoroughly for 20 min, add 4.0 g of nonylphenol polyoxyethylene ether-8, and stir thoroughly for 20 min, the obtained colloid is designated as QJ- 6.

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Abstract

The invention discloses a residual oil hydrotreating method. The method adopts a fixed bed hydrogenation process and comprises the following steps: in the presence of hydrogen, sequentially contacting a residual oil raw material with at least one hydrogenation carbon residue removal catalyst and at least one hydrogenation denitrification catalyst for hydrogenation reaction to obtain hydrogenated oil; wherein the hydrogenation carbon residue removal catalyst comprises a carrier, a molybdenum element, a group VIII metal element and a surfactant, at least part of the molybdenum element exists in the catalyst in the form of phosphomolybdenum blue, and at least part of the group VIII metal element exists in the catalyst in the form of a complex with an organic acid; the hydrodenitrogenation catalyst comprises a carrier, a molybdenum element, a group VIII metal element, an electronic auxiliary agent and a surfactant, and at least part of the molybdenum element exists in the catalyst in the form of phosphomolybdenum blue. The residual oil hydrotreating method has the effects of deep carbon residue removal and denitrification.

Description

technical field [0001] The invention belongs to the field of petrochemical industry and relates to a method for hydrogenation treatment of residual oil. Background technique [0002] Fixed-bed residual oil hydrotreating technology is the most effective residual oil pretreatment technology in the industry at present. Through hydrogenation, the content of metals, sulfur, nitrogen, and asphaltene in raw materials can be reduced, the hydrogen-carbon ratio can be increased, and high-quality oil can be provided for catalytic cracking and other devices. raw material. Hydrotreating of fixed bed residual oil usually adopts hydroprotectant, hydrodemetallization catalyst, hydrodesulfurization catalyst and hydrodenitrogenation (removal of charcoal) catalyst in gradation, through the hydrogenation process to complete hydrodemetallization, Reactions such as hydrodesulfurization, hydrodenitrogenation, and hydrogenation to remove residual carbon. The basic principle of gradation is that a...

Claims

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Application Information

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IPC IPC(8): C10G45/04C10G45/06C10G45/08C10G45/10
CPCC10G45/04C10G45/06C10G45/08C10G45/10C10G2300/201C10G2300/1077C10G2300/1037C10G2300/202C10G2300/70
Inventor 袁胜华蒋淑娇耿新国杨刚隋宝宽张成王志武
Owner CHINA PETROLEUM & CHEM CORP
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