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 i

Method used

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  • Residual oil hydrotreating method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0083] Example 1

[0084] Weigh 1000.0 g of alumina dry rubber powder, add 20.0 g of citric acid, and 15.0 g of succulent powder. After mixing evenly, add 800.0 g of an aqueous solution containing 2.0% nitric acid by mass, and after rolling for 15.0 minutes, use clover with a diameter of 3.0 mm. Orifice plate extrusion. After drying at 120 °C for 4.0 h, it was calcined at 800 °C for 4.0 h. The calcined carrier is designated as S-1.

[0085] Weigh 64.3 g of ammonium heptamolybdate tetrahydrate, 5.0 g of 85% phosphoric acid, and 200 g of deionized water, heat at 80 °C for 2.0 h, and the obtained solution is recorded as QP-1.

[0086] 18.0 g of 25wt% acetaldehyde aqueous solution was added to QP-1, heated at 75 °C for 2.0 h, and the resulting liquid was recorded as QL-1.

[0087] 76.0 g of nickel citrate was added to QL-1, and after fully stirring for 20 min, 3.0 g of dodecyl alcohol polyoxyethylene ether-11 was added, and after fully stirring for 20 min, the obtained colloid ...

Example Embodiment

[0089] Example 2

[0090] The preparation method of carrier S-1 is the same as that in Example 1.

[0091] Weigh 56.5 g of ammonium tetramolybdate dihydrate, 4.6 g of ammonium dihydrogen phosphate, and 200 g of deionized water, heat at 80 °C for 2.0 h, and the obtained solution is recorded as QP-2.

[0092] 18.0 g of fructose was added to QP-2, heated at 75ºC for 2.0 h, and the resulting liquid was recorded as QL-2.

[0093] 35.0 g of nickel acetate was added to QL-2, and after fully stirring for 20 min, 3.0 g of nonylphenol polyoxyethylene ether-10, after fully stirring for 20 min, the obtained colloid was recorded as QJ-2.

[0094] S-1 was impregnated with QJ-2, air-dried for 12.0 h, and dried at 140 ºC for 4 h. The obtained catalyst was denoted as CA-2.

Example Embodiment

[0095] Example 3

[0096] The preparation method of carrier S-1 is the same as that in Example 1.

[0097] Take 43.5 g of molybdenum trioxide, 4.6 g of ammonium dihydrogen phosphate, and 200 g of ionized water, heat at 80 °C for 2.0 h, and the obtained solution is recorded as QP-3.

[0098] Add 16.0 g MoS to QP-3 2 , heated at 85 °C for 3.0 h, and the liquid obtained after filtration was recorded as QL-3.

[0099] 35.0 g of nickel acetate was added to QL-3, and after fully stirring for 20 min, 3.0 g of dodecylphenol polyoxyethylene ether-10 was added, and after fully stirring for 20 min, the obtained colloid was recorded as QJ-3.

[0100] S-1 was impregnated with QJ-3, air-dried for 12.0 h, and dried at 140 °C for 4 h. The obtained catalyst was denoted as CA-3.

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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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