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A heavy oil visbreaking equipment and a heavy oil visbreaking method

A technology for heavy oil and equipment, which is only applied in multi-stage serial refining and cracking process treatment, treatment of hydrocarbon oil, petroleum industry, etc. It can solve the problems of prolonging the production cycle and achieve the effect of increasing liquid yield and reducing coking

Active Publication Date: 2020-06-16
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method only prolongs the production cycle by optimizing the process conditions, and does not fundamentally solve the problem of coking in the furnace tube of the visbreaking heating furnace

Method used

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  • A heavy oil visbreaking equipment and a heavy oil visbreaking method
  • A heavy oil visbreaking equipment and a heavy oil visbreaking method
  • A heavy oil visbreaking equipment and a heavy oil visbreaking method

Examples

Experimental program
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Effect test

Embodiment approach

[0029] According to the present invention, the heavy oil visbreaking unit can achieve the purpose of the present invention as long as it can achieve the aforementioned purpose. According to a preferred embodiment of the present invention, the heavy oil visbreaking unit c is a spray visbreaking tower, and the spray visbreaking The viscous tower includes an upper straight cylinder reaction zone 21 and a lower cone collection zone 22 connected to each other, a raw material inlet, a product outlet, and an atomizing nozzle 18 arranged on the top of the upper straight cylinder reaction zone 21 and communicated with the raw material inlet;

[0030] Wherein, the upper straight cylinder reaction zone 21 is used for heat exchange between the heavy oil raw material and the gas from the gas deoxygenation unit b to the temperature required for cracking and visbreaking reaction;

[0031] Wherein, the lower cone collection area 22 is used to collect visbreaking residue;

[0032] Wherein, the...

Embodiment

[0102] Three groups of tests were carried out on the heavy oil visbreaking medium-scale test device, namely Example 1, Example 2, and Example 3. The test device flow chart of embodiment sees figure 1 .

[0103] Follow the steps below (eg figure 1 ):

[0104] 1. After the heavy oil is preheated to 150-350°C through the heat exchanger f (200°C in Example 1, 250°C in Example 2, and 280°C in Example 3), it enters from the top of the spray vis-reducing tower, and is sprayed by atomization The nozzle disperses into small droplets of 20-600μm.

[0105] 2. The small droplets are in contact with 400-900°C high-temperature deoxygenation hot air (450°C in embodiment 1, 500°C in embodiment 2, and 600°C in embodiment 3) in the spray vis-reducing tower for 0.01-60min (the embodiment 1 is 600°C). 10min, embodiment 2 is 8min, embodiment 3 is 5min), the liquid droplet takes place thermal cracking reaction rapidly in the hot blast, after the reaction, the remaining viscosity-reducing residu...

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Abstract

The invention specifically provides an apparatus for visbreaking of heavy oil, belonging to the technical field of visbreaking and cracking. The apparatus comprises a gas heating unit, a gas deoxidation unit and a heavy-oil visbreaking unit, which are successively connected in series along the flowing direction of a material, wherein the gas heating unit is used for heating gas so as to realize heat supply to the heavy-oil visbreaking unit; the gas deoxidation unit is used for removing oxygen in gas from the gas heating unit; and the heavy-oil visbreaking unit is used for heat exchange betweena raw heavy oil material and gas from the gas deoxidation unit until a desired temperature for cracking is reached and for a visbreaking reaction. The invention also provides a method for visbreakingof heavy oil. The gas heating unit heats a gas medium, then the gas deoxidation unit removes oxygen in the gas medium, and then gas medium without oxygen enters the heavy-oil visbreaking unit for heat exchange with the raw heavy oil material until the desired temperature is reached; thus, coking in the gas heating unit, such as furnace tubes in a heating furnace, can be reduced, and liquid yieldcan be increased.

Description

technical field [0001] The invention relates to equipment for visbreaking heavy oil and a method for visbreaking heavy oil. Background technique [0002] At present, more than 70% of the remaining oil resources in the world are heavy oil resources. In my country, onshore heavy oil and asphalt resources account for more than 20% of the total petroleum resources. Oil sands are estimated to have more than 6 billion tons of geological resources and more than 3 billion tons of recoverable resources. The proportion of unconventional oil (such as various heavy oil, oil sand bitumen, etc.) will gradually increase, and will become one of the important strategic alternative resources in my country. [0003] Visbreaking is a mild thermal cracking process, the main purpose is to reduce the viscosity of residual fuel oil and improve the pour point of oil products, so as to facilitate transportation and subsequent processing. It is an important process of heavy oil processing. The conv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G9/36C10G9/20C10G55/04
CPCC10G9/007C10G9/20C10G9/36C10G55/04C10G2300/10C10G2300/1037C10G2300/1062C10G2300/107C10G2300/1077C10G2400/02C10G2400/04C10G2400/26
Inventor 张翊吕庐峰田志鸿李学锋何金龙刘亚林
Owner CHINA PETROLEUM & CHEM CORP
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