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Method of improving catalytic cracking product distribution

A catalytic cracking and product technology, which is applied in catalytic cracking, cracking, petroleum industry, etc., can solve the problems of increasing FCC processing costs, reducing FCC economic benefits, reducing production capacity, etc., to save the amount of enhancer, improve product distribution, and guarantee The effect of production capacity

Inactive Publication Date: 2003-07-16
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The disadvantage is that such a large amount of addition not only increases the processing cost of FCC, but also reduces the production capacity accordingly, thus reducing the economic benefits of FCC

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0019] Example 1 : FCC catalytic cracking mixed feedstock in a factory, carbon residue 0.70% (m), strengthening agent is ethylene oxide and C 12 Block polymers of alcohols and propylene oxide with C 12 A mixture of block polymers of alcohols in which ethylene oxide and C 12 Block polymers of alcohols and propylene oxide with C 12 The mixing ratio of the block polymer of alcohol is 1:9, the number of the strengthening agent is T-01, and its average molecular weight is 640. The amount of strengthening agent added is 50×10 -6 (m, for raw material). Before the enhancer is added to the raw material oil, it should be mixed with rich C 9 Aromatic hydrocarbons and hydrocarbons are uniformly mixed at a ratio of 1:10 (mass ratio). The industrial balancer RHZ-300 (trade name) with activity index MA=72 was used to conduct a comparative test with a blank sample on a fixed fluidized bed catalytic cracking experimental device. The process parameters are: agent-oil ratio 5.0, space vel...

example 2

[0023] Example 2 : Catalytic cracking raw material in a certain plant, mixed with residual oil from vacuum residue desulfurization (VRDS) unit, carbon residue reaches 2.5%-3.0% (m), add 100×10 -6 (m, for raw materials) enhancer T-01. Before the enhancer is added to the raw material oil, it is mixed with rich C 9 Aromatic hydrocarbons and hydrocarbons are uniformly mixed at a ratio of 1:10 (mass ratio). FCC industrial plant balancer ZC-7000 (trade name) was used, and its activity index MA=65.0. On the riser catalytic cracking experimental device, the comparative test of dosing and blank test was carried out. The reaction temperature is 500°C, and the agent-to-oil ratio is 5.0. The results are shown in Table 2.

[0024] As can be seen from Table 2, 100×10 -6 (m) After strengthening agent T-01, the yield of diesel oil can be increased by 1.76 percentage points, the yield of light oil can be increased by 1.54 percentage points, the total liquid yield can be increased by 1.5...

example 3

[0027] Example 3: The industrial application test was carried out on the FCC production device of a certain factory, the catalyst used was RHZ-300, and the addition of strengthening agent T-01 was 100×10 -6 (m). Before the enhancer is added to the raw material oil, it should be mixed with rich C 9 Aromatic hydrocarbons and hydrocarbons are uniformly mixed at a ratio of 1:10 (mass ratio). Before and after dosing, the process parameters are the same. The reaction temperature was all 500°C. After the addition of additives, due to the reduction of the amount of green coke, the regeneration temperature dropped from 698°C to 688°C, and the definite char was also reduced from 1.42% to 1.26%. The results of blank test and dosing test were obtained through on-site calibration. See Table 3 for the material balance data obtained from the calibration of additives and blank tests.

[0028] It can be seen from Table 3: add 100×10 -6 (For raw materials, m) After the enhancer T-01, th...

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Abstract

A method for improving the distribution of products in catalytic cracking process features that an enhancer is proportionally used as one of raw materials to increase the output rate of light oil andtotal rate of liquid, and decrease the output rate of coke.

Description

Technical field: [0001] The invention belongs to the technical field of catalytic cracking (FCC) in oil refining industry. It involves a new method of improving the distribution of catalytic cracking products. The present invention is by adding trace additives (the present invention is called strengthening agent, and some literature is called activator) in FCC raw material, to reach the purpose of improving the distribution of FCC products. Background technique: [0002] As we all know, in the FCC process, the FCC raw material undergoes catalytic cracking reaction to obtain products such as dry gas, liquefied gas, gasoline, diesel oil, coke and oil slurry. The sum of gasoline yield and diesel yield is called light oil yield; the sum of light oil yield and liquefied gas yield is called total liquid yield. The ideal distribution of catalytic cracking products pursued by refineries should be: as high as possible light oil yield or total liquid yield; as low as possible coke y...

Claims

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Application Information

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IPC IPC(8): C10G11/00
Inventor 周忠国柯兴民陆善祥徐金山李林波达建文林健梁颖杰
Owner CHINA PETROLEUM & CHEM CORP
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