Multi radiation reqion pyrolyzer and its use

A cracking furnace and radiation zone technology, applied in cracking, non-catalytic thermal cracking, petroleum industry, etc., can solve the problem of reducing the service life of cracking selective cracking furnace, cracking furnace operation cycle and product yield, increasing raw material consumption, energy consumption and Production cost, complex cracking furnace operation control and other issues, to achieve the effect of wide range of raw material adaptability, compact structure, and small footprint

Inactive Publication Date: 2005-09-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When a cracking furnace cracks two or more raw materials at the same time, due to the different properties of the cracking raw materials, the required cracking conditions are also different, such as the outlet temperature of the radiant furnace tube, dilution ratio, residence time and required heat, flue gas There will be a large difference in temperature, etc. This difference will make the operation and control of the entire cracking furnace more complicated, making it difficult for the entire cracking furnace to operate under optimal conditions for various raw materials, thereby reducing the cracking selectivity and the use of the cracking furnace. The operating cycle and product yield of the life and cracking furnace increase the consumption of raw materials, energy consumption and production costs

Method used

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  • Multi radiation reqion pyrolyzer and its use
  • Multi radiation reqion pyrolyzer and its use
  • Multi radiation reqion pyrolyzer and its use

Examples

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Embodiment 1

[0042] 1 cracking furnace with an annual output of 300,000 tons. The cracking furnace includes a radiation section 3 with a hearth height of about 17 meters; a convection section 2 with a height of about 15 meters; the radiation section is divided into four radiation areas by intersecting furnace walls; 40 groups of 2-1 are arranged in each radiation area type furnace tube, and 24 bottom burners are arranged symmetrically with the furnace tube as the axis. The four raw materials of ethane, naphtha, diesel and hydrogenated tail oil can be cracked respectively in the four radiation zones. Load 96.55GJ / h; hydrogenated tail oil crossover temperature 561°C, outlet temperature 812°C, heat load in the radiation section 101.50GJ / h; diesel crossover temperature 557°C, outlet temperature 816°C, heat load in the radiation section 100.67GJ / h ; The ethane crossing temperature is 636°C, the outlet temperature is 851°C, and the heat load of the radiant section is 86.24GJ / h. By adjusting th...

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Abstract

A cracking furnace for the crack reaction of petroleum hydrocarbon features that its radiating segment includes n radiating regions isolated by furnace walls, which use a common convection segment, and the bottom burners are uniformly arranged at both sides of furnace wall. Its advantages are uniform heating, high heat transfer efficiency, and high productivity.

Description

technical field [0001] The invention relates to a cracking furnace and its application, more specifically, to a novel multi-radiation zone cracking furnace for high-temperature cracking reaction of petroleum and its application. Background technique [0002] As we all know, petroleum distillation cracking reaction is the main means to produce ethylene, propylene and other extremely important industrial raw materials. Even a little improvement in this field can bring huge economic and social benefits. The cracking furnace is the main equipment for the cracking reaction. Therefore, almost all large petroleum and petrochemical companies in the world attach great importance to it and invest huge sums of money in the improvement of the cracking furnace. [0003] The pyrolysis reaction occurs under high temperature conditions, and the traditional high temperature conditions are realized by supplying heat to the furnace tube of the radiant section through the burners in the radian...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G9/20
Inventor 曾清泉许士兴张兆斌陈硕王国清
Owner CHINA PETROLEUM & CHEM CORP
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