Processing method and apparatus for converting heavy oil to light fractions

A processing method and technology of a processing device are applied in the field of lightweight processing methods and devices to achieve the effect of wide adaptability

Inactive Publication Date: 2011-11-09
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Part of the generated high-temperature heat carrier is recycled to the coking reactor, and the other part is discharged from the system to maintain the balance of the total amount of solid heat carrier in the device. This process is only suitable for the processing of unconventional solid-phase raw material oil. has limitations in heat matching

Method used

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  • Processing method and apparatus for converting heavy oil to light fractions
  • Processing method and apparatus for converting heavy oil to light fractions
  • Processing method and apparatus for converting heavy oil to light fractions

Examples

Experimental program
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Effect test

Embodiment 1

[0063] The specific implementation of the heavy oil lightening processing method is not only applicable to the conventional raw material oil used for catalytic cracking and hydrocracking, but also suitable for the processing of heavy or low-quality raw material oil with high sulfur, nitrogen, metal and residual carbon content processing, including figure 1 It is a schematic diagram of the principle of heavy oil lightening processing method, which embodies the basic principle of heavy oil lightening processing. figure 2 It is a schematic structural view of the device shown in Example 1. As can be seen from the figure, the heavy oil lightening processing device provided by the present invention includes:

[0064] The thermal cracking reaction chamber 6, the stripping chamber 7 and the material return chamber 8 connected to each other at the lower part; the lower part of the thermal cracking reaction chamber 6, the lower part of the stripping chamber 7 and the lower part of the ...

Embodiment 2

[0080] The difference between this embodiment 2 and embodiment 1 is: the riser type combustion / gasification reactor 1 in this device is mainly used for the gasification reaction of the coke produced by the thermal cracking reaction; The heat carrier enters the riser combustion / gasification reactor 1 used for gasification reaction after being stripped and returned. At this time, the bottom of the riser combustion / gasification reactor 1 is fed with oxygen-enriched fluidizing gas, The superficial gas velocity of the oxygen-enriched fluidized gas in the riser type combustion / gasification reactor 1 is 0.3-6m / s, and the gasification reaction temperature is 900-1200°C, so that the petroleum coke attached to the solid heat carrier The gasification reaction is completed during the fluidization lifting process.

Embodiment 3

[0082] as attached image 3 As shown, the stripping chamber 7 and the return chamber 8 are integrally structured and arranged separately from the thermal cracking reaction chamber 6, and the material flowing out from the overflow port of the thermal cracking reaction chamber 6 enters the stripping chamber 7 in the form of a moving bed through a downcomer And the material return chamber 8, the downcomer can further play the role of material seal to prevent the air flow from being reversed.

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Abstract

The invention relates to a processing method and an apparatus for converting heavy oil to light fractions. The processing method comprises the following steps: introducing raw oil to a thermal cracking reaction chamber through a material supply system, mixing the raw oil with a high-temperature solid heat carrier from a combustion/gasification reactor for fluidized heat transfer and carrying out thermal cracking reaction on the surface of the solid heat carrier; stripping the cracked gas and light component products generated during thermal cracking reaction with a fluidized medium gas and then introducing to a product outlet, feeding the solid heat carrier attached on petroleum coke into the combustion/gasification reactor through a material return valve, and introducing oxidation/gasification fluidized gas to carry out combustion/gasification reaction on the petroleum coke during fluidized elevating process; and separating the reaction products and the solid heat carrier by a gas-solid separator, feeding the flue gas/gasified gas into a heat exchanger to recover waste heat, then introducing to the product outlet, distributing the solid heat carrier by a distribution valve, separately introducing into the thermal cracking reactor and combustion/gasification reactor for recycling, further processing and utilizing the collected fly ash and thus achieving complete high-value conversion and utilization of heavy oil.

Description

technical field [0001] The invention belongs to the field of energy chemical industry of heavy oil or coal, biomass pyrolysis oil processing and high-value utilization; especially relates to a heavy or inferior crude oil, heavy oil, vacuum residue, pyrolysis tar, circulating oil, clarification A light-weight processing method and device for raw oils such as oil, bitumen, oil sand, oil rock, and oil shale, specifically a light-weight processing method and device for coupling thermal cracking of heavy oil with coke combustion gasification. Background technique [0002] The rapid development of social economy has sharply increased the demand for fuel oil and gas resources, while the recoverable reserves of crude oil are decreasing year by year, and the degree of its heavy and inferior quality is gradually deepening. Therefore, improving the deep processing and utilization of crude oil, especially heavy crude oil, has positive significance for alleviating the shortage of oil and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G9/32C10G1/00C10J3/56C10J3/54
CPCY02P20/10Y02P20/129
Inventor 李强汪印张玉明董利高士秋许光文
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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