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Catalytic cracking device

A catalytic cracking unit and catalyst technology, which is applied in catalytic cracking, cracking, petroleum industry and other directions, can solve the problems such as the inability to effectively control the temperature of the regenerated catalyst, the long reaction time of raw materials, and the low ratio of operating agent to oil, etc. The effect of low content and improved yield

Inactive Publication Date: 2015-10-14
LUOYANG PETROCHEMICAL ENG CORP SINOPEC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a catalytic cracking unit to overcome the comprehensive problems of the existing catalytic cracking unit in terms of the inability to effectively control the temperature of the regenerated catalyst, the long reaction time of raw materials, the low ratio of operating agent to oil, the poor distribution of products, and the low quality of oil products. technical difficulties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The catalytic cracking program is carried out on a catalytic cracking pilot plant with a raw material handling capacity of 72Kg / d. The test raw material is Luolian mixed wax oil, and the test catalyst is Luolian catalytic cracking industrial equilibrium catalyst. The micro-reaction activity is 62.

[0055] The raw catalyst is burnt by a coker and a tubular coker. The carbon content of the regenerated catalyst was 0.06w%, and the microreaction activity was 62. The stripping medium in the stripping section of the settler is water vapor, and the stripping temperature is 500°C.

[0056] The difference between this example and the comparative example is the temperature of the regenerated catalyst of the regenerated settler, the reaction temperature, the ratio of raw materials in the reactor to oil, and the reaction time.

[0057] The operating conditions, product distribution and some product properties of the present embodiment are shown in Table 3.

Embodiment 2

[0059] According to Example 1, the difference is the temperature of the regenerated catalyst of the regenerated settler, the reaction temperature, the ratio of raw materials to oil in the reactor, the reaction time, etc. The operating conditions, product distribution and part product properties of the present embodiment are shown in Table 4.

Embodiment 3

[0061] According to Example 1, the difference is the temperature of the regenerated catalyst of the regenerated settler, the reaction temperature, the ratio of raw materials to oil in the reactor, the reaction time, etc. The operating conditions, product distribution and some product properties of the present embodiment are shown in Table 5.

[0062] Table 1 Comparative examples of catalytic cracking feed properties

[0063] FCC Feed Feed

Luo Lian mixed wax oil

Density at 20°C, kg·m -3

901.2

Charcoal residue, w%

0.32

Family composition, w%

saturated hydrocarbon

57.5

Aromatics

39.8

Colloid + asphaltenes

2.7

Sulfur content, μg g -1

1700

Nitrogen content, w%

0.2706

Ni, μg g -1

2.6

V, μg·g -1

0.2

[0064] Table 2 Comparison of operating conditions, product distribution and some product properties of conventional catalytic cracking

[0065]

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Abstract

The invention discloses a catalytic cracking device which comprises a cooler (4), a heat remover (20), a raw material oil nozzle (10), a reactor (12), a precipitator (27), a burner (15) and a tubular burner (11). Two submerged flow pipes are symmetrically arranged on the bottom of the cooler (4). The reactor (12) is a tubular reactor on which two catalyst inlets are arranged. The submerged flow pipes are communicated with the catalyst inlets through a regenerated catalyst transportation tube. The outlet of the reactor (12) is communicated with the precipitator (27). The lower part of the precipitator (27) is a precipitator stripping portion (30), which is successively communicated with the burner (15) and the tubular burner (11). The tubular burner (11) is communicated with the cooler (4). By means of the device, the content of olefin in gasoline can be reduced by 10-20% by volume and the octane number (RON) of the gasoline can be increased by 0.1-0.5 units. The device can improve diesel quality, is simple in structure, is low in energy consumption, is easy to operate and is greatly increased in single-set economic benefit.

Description

technical field [0001] The invention belongs to the field of catalytic cracking of hydrocarbon oil, in particular to a catalytic cracking device. Background technique [0002] At present, the riser catalytic cracking unit commonly used in the catalytic cracking process of the petrochemical industry has the following problems: First, the temperature of the regenerator cannot be effectively controlled, and the regeneration temperature of the catalyst is generally higher than 650°C, causing the riser to react The contact temperature of the oil agent in the vessel is relatively high. Excessively high oil agent contact temperature will increase the thermal cracking reaction and reduce the degree of catalytic cracking reaction. As a result, the product distribution will deteriorate, the yield of dry gas and coke will be high, and the total liquid yield will be low. Due to the high regenerated catalyst temperature, limited by the heat balance of the device, the catalyst-oil ratio o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G11/18
Inventor 王文柯陈俊武王龙延刘昱汤海涛樊麦跃陈曼桥陈香生
Owner LUOYANG PETROCHEMICAL ENG CORP SINOPEC
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