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Process for catalytic cracking of petroleum hydrocarbon

A technology of catalytic cracking and petroleum hydrocarbons, which is applied in the direction of catalytic cracking, cracking, petroleum industry, etc., to achieve the effect of realizing contact, reducing elevation and improving contact effect

Active Publication Date: 2009-07-08
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, the injection angle of the petroleum hydrocarbon feedstock into the FCC reactor, that is, the feeding method in which the angle between the feed direction and the vertical upward direction of the reactor axis is greater than 90° has not been reported.

Method used

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  • Process for catalytic cracking of petroleum hydrocarbon
  • Process for catalytic cracking of petroleum hydrocarbon

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Experimental program
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Effect test

Embodiment 1

[0027] This embodiment illustrates: adopt the implementation effect of the method provided by the present invention.

[0028] in such as figure 1 Experiments were carried out on the catalytic cracking medium-sized unit shown. The main test steps are as follows: pre-lift steam is injected from the bottom of the riser reactor, and raw material A (its properties are shown in Table 1) is injected into the riser reactor through nozzle 4. The angle formed by the central axis of the nozzle 4 and the central axis of the riser reactor is 135°. The raw oil contacts and reacts with the regenerated catalyst MLC-500 (its properties are shown in Table 2), and the generated oil gas and the reacted catalyst enter the settler upward; the reaction oil gas and the reacted catalyst are separated, and the reaction oil gas is sent to the subsequent The separation system is further separated into various products; the reacted catalyst is stripped and then sent to the regenerator for coke regenerat...

Embodiment 2

[0032] This embodiment illustrates: adopt the implementation effect of the method provided by the present invention.

[0033] in such as figure 1 Experiments were carried out on the catalytic cracking medium-sized unit shown. The main test steps are as follows: pre-lift steam is injected from the bottom of the riser reactor, and raw material A (its properties are shown in Table 1) is injected into the riser reactor through nozzle 4. The angle formed by the central axis of the nozzle 4 and the central axis of the riser reactor is 155°. The raw oil contacts and reacts with the regenerated catalyst MLC-500 (its properties are shown in Table 2), and the generated oil gas and the reacted catalyst enter the settler upward; the reaction oil gas and the reacted catalyst are separated, and the reaction oil gas is sent to the subsequent The separation system is further separated into various products; the reacted catalyst is stripped and then sent to the regenerator for coke regenerat...

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Abstract

A petroleum hydrocarbon catalytic cracking method is to inject petroleum hydrocarbon raw materials into a catalytic cracking reactor to contact with a catalyst and react under catalytic cracking reaction conditions to separate the reacted oil gas and catalyst, and the reacted oil gas is sent to a subsequent separation system. The carbon-deposited catalyst is recycled after being regenerated, wherein the injection angle of the petroleum hydrocarbon raw material into the catalytic cracking reactor is 90°<α<180°. The method can increase the degree of atomization of the hydrocarbon feedstock, and make the catalyst particle flow and the hydrocarbon feedstock contact instantaneously and evenly, thereby improving product distribution and product properties.

Description

technical field [0001] The present invention pertains to a process for the catalytic cracking of petroleum hydrocarbons in the absence of hydrogen. Background technique [0002] In the catalytic cracking process, heavy macromolecular petroleum hydrocarbons are cracked into small molecular petroleum hydrocarbons. Typically, the preheated hydrocarbon feedstock is sprayed into one or more reaction zones after being atomized, where it contacts with a flow of fluidized catalyst particles and gasifies into oil and gas, and then the oil and gas molecules are generated under the action of the catalyst. cracking reaction. During the reaction process, coke, as one of the reaction products, gradually deposits on the surface of the catalyst particles, causing the catalyst to gradually lose its activity. After the carbon-containing catalyst is stripped of oil and gas, it burns off the coke and restores its activity in the oxygen-rich high-temperature environment in the regeneration zone...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G11/18
Inventor 王巍张久顺龙军达志坚谢朝钢魏晓丽张春城
Owner CHINA PETROLEUM & CHEM CORP
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