Light olefin cracking equipment and cracking method

A low-carbon olefin and equipment technology, applied in the field of petroleum cracking, can solve the problems that crude oil cannot be directly used as cracking raw material and high cost of low-carbon olefin, and achieve the effect of saving process cost and reducing coking

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

AI Technical Summary

Problems solved by technology

[0023] The purpose of the present invention is proposed in order to overcome the problem that crude oil existing in the prior art cannot be directly used as cracking raw material and the cost of producing low-carbon olefins is high

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

[0097] 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 .

[0098] 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 pipelines of the convection section (2), the radiation section (5), the quench boiler (6) and the separation tower (8) passing through the materials are in a negative pressure state. The present invention puts the pipelines of the convection section, the radiation section and the quenching boiler in a negative pressure state through the decompression device. Therefore, when the heavy cracking raw material (such as crude oil) enters the convection section, its The gasification temperature is lowered, so that it can be quickly and fully gasified, and the heavy cracking raw material can be fully gasified in the convection section, which can save process costs. At the same time, due to the gasification at a lower temperature than normal pressure, coking will not be achieved The temperature can effectively reduce the coking of the cracking furnace.

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
CPCC10G9/00C10G2300/1037Y02P30/40
Inventor 周丛张利军李蔚王国清石莹张兆斌刘俊杰
Owner CHINA PETROLEUM & CHEM CORP
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