Preheating method for residual oil raw material on bubbling bed

A fluidized bed and raw material technology, which is applied in the field of preheating of inferior residue oil, can solve the problems that the outlet stream temperature of the heating furnace cannot be guaranteed, the performance of the fluidized bed hydrogenation reaction is affected, and the long-term stable operation of the device is affected, and the temperature requirement can be guaranteed. indicators, avoid condensation and coking reactions, and reduce processing costs.
CN101418223AActive Publication Date: 2009-04-29CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2009-04-29

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Abstract

The invention discloses a method for preheating a fluidized bed residual oil. The method comprises the following steps: solids heated to 400 to 800 DEG C and fed residual oil heated to 200 to 350 DEG C are delivered to a reactor to contact each other to undergo heat exchange reaction; and after hear exchange of raw materials, gases are separated by a separation device and liquid materials are delivered to a fluidized bed reactor. Solid subjected to heat exchange with the raw materials returns to a heating device to be heated again to be recycled. The method can ensure long-term operation of devices and avoid coking in a furnace tube caused by an extremely high temperature due to directly heating of raw material oil by the prior heating furnace. The method can be operated intermittently or continuously.
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Description

technical field

[0001] The invention relates to a method for preheating the feed of a fluidized bed (for processing heavy raw materials) hydrogenation reactor, and is especially suitable for the method for preheating low-quality residual oil with high contents of colloid, asphaltenes and metals. Background technique

[0002] With the vigorous development of heavy crude oil and the changes in the demand structure of petroleum products worldwide, the market demand for light fuel oil continues to grow rapidly and the demand for heavy fuel oil decreases rapidly. The deep processing technology of residual oil has become an important part of the refining industry focus of development. Fluidized bed residual oil hydrogenation technology is one of the important means of processing residual oil raw materials. In the process of hydrocracking of fluidized bed residual oil, the usual situation is that the raw material of residual oil is heated to a certain temperature by a heating furn...

Claims

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