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A kind of processing method of high calcium, high nitrogen and high viscosity residual oil

A processing method and high-viscosity technology, applied in the petroleum industry, hydrotreating process, processing hydrocarbon oil, etc., can solve the problems of catalyst bed hardening, high activity of deironization and decalcification catalyst, and inability to ensure long-term operation of the device, etc. Achieve the effect of reducing coke yield, reducing coke generation and reducing viscosity

Active Publication Date: 2019-12-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the product treated by the slurry bed of the present invention enters the fixed bed, the catalyst therein must be deposited on the fixed bed catalyst, and two problems occur, one is that the activity of the de-iron and decalcification catalyst in front of the fixed bed is too high, and the long-term operation of the device cannot be guaranteed; the other is The catalyst in the product is deposited between the fixed bed catalysts, causing the catalyst bed to compact

Method used

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  • A kind of processing method of high calcium, high nitrogen and high viscosity residual oil
  • A kind of processing method of high calcium, high nitrogen and high viscosity residual oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] use figure 1 In the process shown, the properties of the raw material oil are shown in Table 1, and the reaction conditions and experimental results of the suspension bed reactor, the first ebullating bed reactor and the second ebullating bed reactor are shown in Table 2.

[0034] The preparation process of the catalyst used in the suspended bed reactor: (1) Weigh 100g of pseudoboehmite and 100g of kaolin, acidify with 2mol / L nitric acid solution to make the solid content 20~40%, in the spray drying device Spray molding was carried out on the surface, the formed particles were dried at 120°C for 4 hours, and roasted at 850°C for 6 hours. After sieving, the particles with a size of 10-50 μm were selected for use. (2) Weigh 11.28g of phosphoric acid, add 450mL of distilled water, then add 12.25g of molybdenum oxide and 5.61g of basic nickel carbonate in sequence, heat and stir until completely dissolved, then dilute the solution to 500mL with distilled water to obtain sol...

Embodiment 2

[0037] Same as Example 1, the difference is that the calcination temperature of the suspended bed catalyst carrier is 750°C, and the catalyst property is that the specific surface area is 90m 2 / g, pore volume 0.47mL / g, MoO 3 The NiO content is 2.03%, and the NiO content is 0.60%. The reaction pressure of the suspended bed is 15Mpa. The heavy diesel cycle accounts for 15% of the total feed. The temperature of the ebullated bed second reaction zone is 435°C.

Embodiment 3

[0039] Same as Example 1, the difference is that the suspended bed reaction pressure is 15Mpa, and the property specific surface area of ​​the catalyst in the first ebullating bed reaction zone is 120m 2 / g, the pore volume is 0.73mL / g, the pore volume with a pore diameter of 20-100nm accounts for 48% of the total pore volume, MoO 3 The NiO content is 6.67%, the NiO content is 1.64%, and the spherical particle diameter is 0.1~0.3mm. The wax oil feed amount accounts for 15wt% of the total feed amount of the suspended bed reactor, and the residue oil circulation accounts for 15wt% of the total feed amount.

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Abstract

The invention discloses a processing method of residual oil with high calcium and nitrogen content and high viscosity. The method comprises steps as follows: raw oil enters a suspended bed reactor andsubjected to a reaction under the action of hydrogen and a suspended bed catalyst; obtained hydrogenated oil enters a fluidized bed reaction unit for a reaction, the fluidized bed reaction unit comprises two fluidized bed reaction zones connected in series, the two fluidized bed reaction zones comprise a first-stage fluidized bed reaction zone and a second-stage fluidized bed reaction zone, the hydrogenated oil is subjected to atmosphere-vacuum distillation and fractional distillation by a fractionating tower, and gasoline, light diesel oil, heavy diesel oil, wax oil and vacuum residual oil are obtained. According to the method, the process is simple, impurities in raw materials can be removed effectively, and the raw materials are converted into light fractions effectively.

Description

technical field [0001] The invention relates to a processing method of residual oil, in particular to a processing method suitable for high-calcium, high-nitrogen and high-viscosity vacuum residual oil. Background technique [0002] With the continuous growth of world crude oil demand and the heavy and inferior crude oil resources, the development of molecular refining technology, the increasingly stringent requirements for environmental protection, the market demand for light oil products, the cleanliness of petroleum products and the fierce competition faced by petrochemical enterprises With the competition, various residual oil hydrogenation technologies will develop rapidly. With the weight and deterioration of crude oil and the deep processing of crude oil, the content of harmful metals in oil is getting higher and higher, which has an increasingly serious impact on the processing process. [0003] The increase of calcium content in crude oil has a very serious impact ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02
CPCC10G67/02C10G2300/1037C10G2300/202C10G2300/302C10G2400/02C10G2400/04
Inventor 朱慧红孙素华金浩杨光杨涛蒋立敬
Owner CHINA PETROLEUM & CHEM CORP
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