Bubbling bed combined process

A combined process and fluidized bed technology, which is applied to the combined process field of fluidized bed and fixed bed hydrogenation, can solve the problems of complicated distillation range and operation, and can not realize the optimization of energy utilization, so as to achieve full utilization of thermal energy, Conducive to normal and stable operation and avoid the effect of device blockage

Active Publication Date: 2012-11-21
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The process does not introduce the use of a reactor to control the liquid level system, so there must be a high-pressure separation system with a high investment behind the reactor. The process and operation are complicated, and the optimization of energy utilization cannot be realized

Method used

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  • Bubbling bed combined process
  • Bubbling bed combined process

Examples

Experimental program
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Effect test

Embodiment 1-2

[0030] This example is an embodiment of the combination process of ebullating bed and fixed bed. figure 1 , where the ebullating bed hydroprocessing zone includes only one ebullating bed reactor.

[0031] The ebullated bed catalyst used in the test process is a microspherical tungsten-nickel catalyst supported by alumina, in which the catalyst contains WO3 It is 12wt%, containing NiO is 5wt%. The bulk density of the catalyst is 0.78g / cm 3 , with a surface area of ​​290m 2 / g, the pore volume is 0.54ml / g. The catalyst particle diameter is 0.3 mm.

[0032] The composition and properties of the hydrogenation catalyst used in the fixed-bed hydrotreatment area are: based on the weight of the catalyst, it contains 22% molybdenum oxide, 8% nickel oxide, and the carrier is alumina. The catalyst has a pore volume of 0.40ml / g and a specific surface area of ​​190m 2 / g.

[0033] The low-pressure separator used in the examples is a low-temperature low-pressure separator with an oper...

Embodiment 3

[0036] This example is another implementation of the combination of ebullating bed and fixed bed with graded packing, and the operation flow chart refers to the attached figure 2 .

[0037] The ebullating bed hydrotreating area in this embodiment includes three ebullating bed reactors 3a, 3b and 3c connected in series in sequence, respectively equipped with a hydrodemetallization catalyst, a hydrodesulfurization catalyst and a hydrodenitrogenation catalyst. The ebullated bed catalyst used in the test is a microspherical tungsten-nickel catalyst supported by alumina. Wherein the hydrodemetallization catalyst contains WO 3 is 6wt%, containing NiO is 1wt%, and the bulk density of the catalyst is 0.67g / cm 3 , with a surface area of ​​200m 2 / g, the pore volume is 0.71ml / g, the catalyst particle diameter is 0.3mm; the hydrodesulfurization catalyst contains WO 3 is 15wt%, contains 4wt% NiO, and the bulk density of the catalyst is 0.75g / cm 3 , with a surface area of ​​240m 2 / ...

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Abstract

The invention discloses a novel boiling bed combining technique. The technical flows are as follows: a heavy hydrocarbon oil material after being mixed with hydrogen enters a boiling bed reactor in a mode of flowing to the upside for reaction; a gas effluent after reaction is directly fed into a fixed bed reactor in the down stream for carrying out hydrogenation refining; a liquid effluent is discharged under the control of a liquid control system arranged on the reactor and is directly fed into a middle-low temperature low-pressure separator after decompression for separating; the separated gas is fed into the fixed bed for hydrogenation and the liquid is discharged as a catalyzing-cracking material. The combining technique omits a high-temperature high-pressure separating device, avoidshot oil from generating a coking reaction in heat and high-pressure separation; simultaneously the heat source of the gas effluent is fully used to lead the technique to be compact, save energies andsave the cost.

Description

technical field [0001] The invention relates to a novel combined process of ebullating bed, in particular to the combined process of hydrogenation of ebullating bed and fixed bed. 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 advanced processing technology of heavy and residual oil has become a The focus of refining industry development. Fluidized bed hydrogenation technology has the characteristics of wide adaptability of raw materials and flexible operation, and is one of the important means of processing heavy and residual oil raw materials. Using the combined process of ebullating bed and fixed bed, it can produce high-quality ultra-low sulfur gasoline and diesel fuel to meet market needs. At present, the combined process of ebullating bed and fix...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G65/02
Inventor 胡长禄方向晨蒋立敬李宝忠杨涛贾丽刘建锟
Owner CHINA PETROLEUM & CHEM CORP
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