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Heavy oil coking method

A technology for heavy oil and coking raw materials, which is applied in the field of heavy oil coking, can solve the problems that the coking performance of heating furnace tubes cannot be improved at the same time, and achieve the effects of reducing processing steps and processing difficulty, easy fluidized transportation, and increasing contact area

Active Publication Date: 2016-05-18
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0010] The purpose of the present invention is to provide a new heavy oil coking method in order to overcome the defects that the existing delayed coking method cannot simultaneously improve the coking performance of the heating furnace tube and increase the liquid yield

Method used

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Embodiment 1-3

[0054] Examples 1-3 are used to illustrate the heavy oil coking method provided by the present invention.

[0055] The raw oil is introduced into the fractionating tower e from the raw oil inlet e1 of the fractionating tower e, and then introduced into the radiation heating zone of the heating furnace a from the bottom of the fractionating tower e for preheating, and the preheated raw oil passes through the raw material The inlet c25 is introduced into the spray coking tower c and atomized through the atomizing nozzle c18 to obtain atomized small droplets of 20-500 μm, and the oxygen-containing high-temperature gas obtained by burning coking dry gas from the combustion chamber of the heating furnace a The gas 3 is deoxidized through the coke reactor b, and the deoxidized high-temperature gas 4 (wherein the oxygen content is 0.1% by volume) is introduced into the spray coking tower c through the hot air inlet c24 at the top of the spray coking tower c and is mixed with the above...

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Abstract

The invention provides a heavy oil coking method. The method comprises the following steps: heavy oil coking raw materials are preheated in a radiation heating zone of a heating furnace to 50-400 DEG C; the materials are introduced into a spraying and coking tower for atomization, and oxygen-containing high-temperature gas generated in a combustion chamber of the heating furnace is deoxidized; after deoxidation, deoxidized high-temperature gas and heavy oil coking raw materials in atomized state are contacted in the spraying and coking tower, the heavy oil coking raw materials in atomized state reach a coking temperature, and a coking reaction is carried out; rough coke powder, fine coke powder and oil gas are separated from coking reaction products, and fraction separation is carried out for the oil gas. The heavy oil coking method can reduce coking in a furnace tube of the heating furnace and increase liquid yield, and the method has an industrial application prospect.

Description

technical field [0001] The invention relates to a heavy oil coking method. Background technique [0002] At present, the trend of heavy crude oil, low quality and high price is becoming more and more obvious. The global demand for light clean fuel oil is growing rapidly. Coupled with increasingly stringent environmental protection requirements, heavy oil deep processing technology has become the development of the world's oil refining industry. the key of. In particular, inferior heavy oil has the characteristics of high density, high viscosity, high heavy metal content, high sulfur content, high nitrogen content, high colloid and asphaltene content, which brings great challenges to the processing of crude oil (especially the secondary processing of heavy oil). difficulty. At present, the value-added technologies to increase the conversion depth of heavy oil and increase the output of light oil products still mainly rely on coking, catalytic cracking of residual oil and hy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G55/04
Inventor 吕庐峰张翊侯栓弟王子军张久顺张哲民马力李学锋何金龙田志鸿刘亚林
Owner CHINA PETROLEUM & CHEM CORP
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