Light olefin cracking equipment and cracking method

A technology for low-carbon olefins and equipment, which is applied to the cracking of low-carbon olefins and the field of low-carbon olefins cracking equipment, can solve the problem that crude oil cannot be directly used as a raw material for cracking, and achieve the effect of saving process costs and reducing coking.

Active Publication Date: 2022-03-15
CHINA PETROLEUM & CHEM CORP +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0024] The purpose of the present invention is proposed in order to overcome the problem that the crude oil existing in the prior art cannot be directly used as cracking raw material

Method used

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  • Light olefin cracking equipment and cracking method
  • Light olefin cracking equipment and cracking method
  • Light olefin cracking equipment and cracking method

Examples

Experimental program
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Effect test

Embodiment 1

[0090] Adopt the light olefin cracking equipment provided by the invention (as figure 1 shown) for the cleavage reaction. The low-carbon olefin cracking equipment includes a fan 1 , a convection section 2 , a radiation section 5 , a quench boiler 6 , a reboiler 7 , a separation tower 8 , a condenser 9 , and a decompression device 10 .

[0091] First, start the decompression device 10, and control the pressure of the equipment at 5KPa, so that the equipment is in a negative pressure state; the crude oil after removal is gasified and preheated through the convection section 2, and then enters the radiant section furnace tube 3 for cracking reaction; The combustion system of radiant section 5 adopts the combination of bottom burner and side wall burner, the heat supply ratio of the bottom burner is 80%, and the burner uses oxygen-enriched air for combustion, and the oxygen concentration in the oxygen-enriched air is 30% (V / V). The preheating temperature of crude oil in the con...

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Abstract

The invention relates to the field of petroleum cracking, and discloses low-carbon olefin cracking equipment and a cracking method. Described low-carbon olefin cracking equipment comprises convection section (2), radiation section (5), quick cooling boiler (6), separation tower (8) and decompression device (10) connected successively, and described decompression device will all The pipeline of the material flowing through the convection section (2), the radiant section (5), the quench boiler (6) and the separation tower (8) is in a negative pressure state, and the radiant section (5) includes a furnace, A furnace wall (11) arranged on the inner wall of the furnace, at least one tube bundle (3) arranged inside the furnace, and a plurality of burners (4) arranged on the side wall and / or bottom wall of the furnace . The invention puts the convection section, the radiation section and the pipes passing through the quenching boiler in a negative pressure state through the decompression device, and the heavy cracking raw materials can be fully gasified in the convection section, which can save process costs and effectively reduce the cracking furnace capacity. of coking.

Description

technical field [0001] The invention relates to the field of petroleum cracking, in particular to low-carbon olefin cracking equipment for cracking crude oil in a reduced-pressure environment and a cracking method for preparing low-carbon olefins by using the low-carbon olefin cracking equipment. Background technique [0002] Low-carbon olefins usually refer to the general term of unsaturated hydrocarbons with carbon four or less, mainly including ethylene, propylene, isobutylene, butadiene and other organic chemical raw materials with high economic value. With the development of my country's economy, the demand for these organic chemical raw materials is increasing year by year. Although the production scale of low-carbon olefins is also increasing year by year, it cannot meet the growing demand. The technology to effectively increase the yield of low-carbon olefins has broad application prospects. [0003] For a long time, petroleum hydrocarbon cracking was mainly used to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C11/02C07C4/04C10G9/00
CPCC10G9/00C10G2300/1037
Inventor 张利军周丛李蔚王国清石莹张兆斌刘俊杰
Owner CHINA PETROLEUM & CHEM CORP
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