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Catalytic cracking method and device

A catalytic cracking device and catalytic cracking technology, applied in catalytic cracking, cracking, petroleum industry, etc., can solve problems such as complex processes, achieve the effects of increasing production rate, maximizing benefits, and improving oil-gas contact effect

Inactive Publication Date: 2011-03-30
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process of refining C4 liquefied gas in this process is relatively complicated, and there is no correlation between setting up a superimposed reaction zone for liquefied gas and increasing the yield of propylene

Method used

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  • Catalytic cracking method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The main properties of the heavy feedstock oil A used are listed in Table 1, and the light feedstock is the liquefied gas produced by the cracking of the heavy feedstock oil A. The experiment adopts the operation method of one-way pass, and the experiment is carried out in figure 1 The device is carried out, and the catalyst is RSC-2006. Heavy stock oil A is carried out in reactor I, and the reaction temperature of the riser reactor in reactor I is 515 ℃, and reaction pressure is 0.11Mpa (gauge pressure), and water-oil ratio is 0.05, and the reaction time is 1.1s, The agent-oil ratio is 9.5; the reaction temperature in the constant velocity bed reaction section is 500°C, the reaction pressure is 0.11MPa (gauge pressure), and the reaction space velocity is 1.5h -1 The light raw material C4 liquefied gas reacts in the light raw material reactor II, the reaction temperature of the reactor II is 610°C, the reaction pressure is 0.11Mpa (gauge pressure), the water-oil ratio ...

Embodiment 2

[0047] The main properties of the heavy raw material A used in the experiment and the light raw material are straight-run gasoline are listed in Table 1. The experiment adopts the operation method of one-way pass, and the experiment is similar to figure 2 The experimental device is carried out, and the catalyst is the prolific olefin catalyst of Engelhardt Company. The heavy feed oil A is carried out in the heavy feed oil reactor, the reaction temperature of the riser reaction section in the heavy feed oil reactor is 520°C, the reaction temperature of the constant velocity bed reaction section is 505°C, and the straight-run gasoline is The light raw material reactor is carried out, and the reaction temperature of the light raw material reactor is 620°C. The experimental results are listed in Table 3, and the main properties of gasoline are listed in Table 4. It can be seen from Table 3 and Table 4 that the yields of propylene and gasoline are respectively 4.0% and 1.5% high...

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Abstract

The invention discloses a catalytic cracking method and a catalytic cracking device. The method comprises the following steps of: heating a catalyst from a regenerator at a mixing section; mixing the catalyst and heavy raw oil and adding the mixture into a riser reactor of a reactor I, a constant-velocity bed reactor and a settling vessel; introducing oil gases into a fractionating tower and adding the catalyst into the regenerator for regeneration; mixing the other part of catalyst from the regenerator and light raw oil and then adding the mixture into a reactor II; and introducing reaction oil gases and adding a catalyst compound into the settling vessel, introducing the oil gases into the fractionating tower, and adding the catalyst into the regenerator for regeneration, wherein the reactor I produces qualified gasoline and the reactor II produces olefins, so the requirements of producing gasoline and chemical raw materials can be met by one set of device.

Description

technical field [0001] The invention relates to the catalytic cracking of hydrocarbon oil in the absence of hydrogen, in particular to a catalytic cracking device and a device thereof. Background technique [0002] Catalytic cracking is an important secondary processing technology for the processing of petroleum heavy fractions, and occupies a very important position in the oil refining industry. FCC gasoline is an important source of commercial motor gasoline. In the riser catalytic cracking unit, petroleum heavy fractions (including vacuum gas oil, coking gas oil, atmospheric residue, vacuum residue, solvent deasphalted oil, etc.) undergo high-temperature cracking and Condensation reaction to generate dry gas, liquefied gas, gasoline, diesel, heavy oil (including back refining oil and oil slurry) and coke. [0003] With the rapid development of the economy, the consumption of refined oil is increasing day by day, and the environmental pollution caused by automobile exhau...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/00
Inventor 李占宝张聚越王明党
Owner CHINA PETROCHEMICAL CORP
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