Suspension bed hydrogenation catalyst dispersion process

Abstract

The present invention is the dispersion method of suspension bed hydrogenation catalyst in heavy and residual oil. Several kinds of transition metal or inorganic salt are dissolved in water under acid condition to prepare water solution of catalyst, and one or several kinds of surfactant and surfactant assistant are used to emulsify and disperse the water solution into heavy and residual oil material to form microemulsion before entering to the suspension bed hydrogenation reactor. The mixed material is hydrogenated in the conditions of 8-14 MPa and 400-450 deg.c, and light oil yield over 80 % may be obtained without coke produced basically.

Description

1. Technical field

[0001] The invention relates to a method for dispersing a suspension-bed hydrogenation catalyst in heavy residue oil. 2. Background technology

[0002] Suspension bed hydrogenation is an important chemical reaction process, which has broad application prospects in petroleum processing and chemical industry, especially in the lightening process of heavy and residual oil, suspension bed hydrogenation technology has unique advantages. In the suspension bed hydrogenation process, the dispersion of the catalyst in the heavy residue oil is particularly important. If the catalyst can be uniformly and stably distributed in the feedstock oil with tiny particles, the effective contact area between the feedstock oil and the catalyst can be increased, and the hydrogenation of the catalyst can be fully utilized. Activity, inhibiting the formation of coke, thereby reducing the amount of catalyst added and reducing costs. The original suspended bed hydrogenation technol...

Examples

Embodiment 1

[0020] Put the container containing 500 grams of residual oil on a magnetic stirrer and heat it to 90°C, add 0.3 grams of T-80, 0.1 gram of n-hexanol and 17.3 grams of catalyst aqueous solution with a metal concentration of 0.866m%, and stir at a constant temperature of 90°C for 4 Hours, a homogeneously mixed raw material was obtained. Take 200 grams of the above-mentioned raw materials and put them into an autoclave. The autoclave is heated at a rate of 30°C / min, and is vulcanized at a constant temperature of 250°C and 350°C for half an hour. At the end of the constant temperature vulcanization at 350°C, samples are taken to analyze the dispersion of the catalyst. Then the temperature is raised to the reaction temperature, and the hydrocracking reaction is carried out under the reaction pressure.

Embodiment 2

[0022] Add 500 grams of 80°C residual oil raw material to a GYJ-type homogenizer, add 0.2 grams of T-85, 0.4 grams of n-amyl alcohol and 25 grams of a catalyst solution with a metal concentration of 0.3m%, and emulsify at a constant temperature of 80°C for 4 hours. A uniformly mixed raw material is obtained. Take 200 grams of the above-mentioned raw materials and put them into an autoclave. The autoclave is heated at a rate of 30°C / min, and is vulcanized at a constant temperature of 250°C and 350°C for half an hour. At the end of the constant temperature vulcanization at 350°C, samples are taken to analyze the dispersion of the catalyst. Then the temperature is raised to the reaction temperature, and the hydrocracking reaction is carried out under the reaction pressure.

Embodiment 3

[0024] Add 500 grams of residual oil at 80°C to an L50 vertical colloid mill, add 0.3 grams of NP-7, 0.2 grams of n-pentyl ether and 25 grams of an aqueous catalyst solution with a metal concentration of 0.1m%, and emulsify at a constant temperature of 80°C for 4 hours , to obtain uniformly mixed raw materials, take 200 grams of the above-mentioned raw materials and add them to the autoclave, the autoclave is heated at a rate of 30°C / min, and is vulcanized at a constant temperature of 250°C and 350°C for half an hour, and samples are taken at the end of the constant temperature vulcanization at 350°C. Used to analyze catalyst dispersion. Then the temperature is raised to the reaction temperature, and the hydrocracking reaction is carried out under the reaction pressure.

1. Technical field

[0001] The invention relates to a method for dispersing a suspension-bed hydrogenation catalyst in heavy residue oil. 2. Background technology

[0002] Suspension bed hydrogenation is an important chemical reaction process, which has broad application prospects in petroleum processing and chemical industry, especially in the lightening process of heavy and residual oil, suspension bed hydrogenation technology has unique advantages. In the suspension bed hydrogenation process, the dispersion of the catalyst in the heavy residue oil is particularly important. If the catalyst can be uniformly and stably distributed in the feedstock oil with tiny particles, the effective contact area between the feedstock oil and the catalyst can be increased, and the hydrogenation of the catalyst can be fully utilized. Activity, inhibiting the formation of coke, thereby reducing the amount of catalyst added and reducing costs. The original suspended bed hydrogenation technol...

Examples

Embodiment 1

[0020] Put the container containing 500 grams of residual oil on a magnetic stirrer and heat it to 90°C, add 0.3 grams of T-80, 0.1 gram of n-hexanol and 17.3 grams of catalyst aqueous solution with a metal concentration of 0.866m%, and stir at a constant temperature of 90°C for 4 Hours, a homogeneously mixed raw material was obtained. Take 200 grams of the above-mentioned raw materials and put them into an autoclave. The autoclave is heated at a rate of 30°C / min, and is vulcanized at a constant temperature of 250°C and 350°C for half an hour. At the end of the constant temperature vulcanization at 350°C, samples are taken to analyze the dispersion of the catalyst. Then the temperature is raised to the reaction temperature, and the hydrocracking reaction is carried out under the reaction pressure.

Embodiment 2

[0022] Add 500 grams of 80°C residual oil raw material to a GYJ-type homogenizer, add 0.2 grams of T-85, 0.4 grams of n-amyl alcohol and 25 grams of a catalyst solution with a metal concentration of 0.3m%, and emulsify at a constant temperature of 80°C for 4 hours. A uniformly mixed raw material is obtained. Take 200 grams of the above-mentioned raw materials and put them into an autoclave. The autoclave is heated at a rate of 30°C / min, and is vulcanized at a constant temperature of 250°C and 350°C for half an hour. At the end of the constant temperature vulcanization at 350°C, samples are taken to analyze the dispersion of the catalyst. Then the temperature is raised to the reaction temperature, and the hydrocracking reaction is carried out under the reaction pressure.

Embodiment 3

[0024] Add 500 grams of residual oil at 80°C to an L50 vertical colloid mill, add 0.3 grams of NP-7, 0.2 grams of n-pentyl ether and 25 grams of an aqueous catalyst solution with a metal concentration of 0.1m%, and emulsify at a constant temperature of 80°C for 4 hours , to obtain uniformly mixed raw materials, take 200 grams of the above-mentioned raw materials and add them to the autoclave, the autoclave is heated at a rate of 30°C / min, and is vulcanized at a constant temperature of 250°C and 350°C for half an hour, and samples are taken at the end of the constant temperature vulcanization at 350°C. Used to analyze catalyst dispersion. Then the temperature is raised to the reaction temperature, and the hydrocracking reaction is carried out under the reaction pressure.