Process method for treating residual oil

A process method and residual oil technology, which can be used in hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc., can solve problems such as unfavorable stable operation of devices and inability to fundamentally change the growth trend of pressure drop in pre-reactors.

Active Publication Date: 2017-05-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method alleviates the increase in pressure drop by changing the loads of each anti-feed, but cannot fundamentally change the growth trend of the pre-reactor pressure drop. From the point of view of actual indus

Method used

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  • Process method for treating residual oil
  • Process method for treating residual oil
  • Process method for treating residual oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] The properties of the raw material A used in Example 1 are shown in Table 1. After mixing with hydrogen, it enters the hydrogenation pretreatment device for hydrogenation pretreatment. The reaction temperature is 377 °C and the volume space velocity is 0.4h. -1 , the reaction pressure is 16MPa, the oil produced by the reaction is separated to obtain light fraction and heavy fraction, and the cut point is 620°C. The heavy fraction is processed through a coking unit, and then separated to obtain coked gasoline, coked diesel oil, coked wax oil and coke. The operating conditions of coking are: reaction temperature 505°C, pressure 170000Pa.

[0078] Send coker wax oil and light fraction, 30% catalytic cracked diesel and all catalytic cracked heavy cycle oil to the hydrogenation pretreatment reaction zone. The total catalyst loading, feed properties and feed amount of the hydropretreatment reactor A, hydrogenation pretreatment reactor B, and hydrogenation pretreatment reacto...

Embodiment 2

[0080] In Example 2, the properties of the raw material B used are shown in Table 1. After mixing with hydrogen, it enters the hydrogenation pretreatment device for hydrogenation pretreatment reaction. The reaction temperature is 375°C and the volume space velocity is 0.40h. -1 , the reaction pressure is 16MPa, the oil produced by the reaction is separated to obtain light fraction and heavy fraction, and the cut point is 610°C. The heavy fraction is processed through a coking unit, and then separated to obtain coked gasoline, coked diesel oil, coked wax oil and coke. The operating conditions of coking are: reaction temperature 505°C, pressure 170000Pa.

[0081] Send coker wax oil, light distillate oil and light distillate, as well as 20% catalytic cracked diesel oil and all catalytic cracked heavy cycle oil from the catalytic cracking unit to the hydrotreating reaction zone. The total catalyst loading and feed properties of the hydrogenation pretreatment reactor A, hydrogenat...

Embodiment 3

[0083] In Example 3, raw materials A, B, and C were mixed with hydrogen and then entered into respective hydrogenation pretreatment devices for hydrogenation pretreatment. The reaction temperature was 380°C and the volume space velocity was 0.4h -1 , the reaction pressure is 16MPa, the oil produced by the reaction is separated to obtain light fraction and heavy fraction, and the cut point is 608°C. The heavy fraction is processed through a coking unit, and then separated to obtain coked gasoline, coked diesel oil, coked wax oil and coke. The operating conditions of coking are: reaction temperature 505°C, pressure 170000Pa.

[0084] The hydropretreatment reactor A adopts the coker gas oil of raw material A and the light fraction of A, the hydropretreatment reactor B adopts the coker gas oil of raw material B and the light fraction of B, and the hydropretreatment reactor C adopts Feedstock C coker gas oil and C light fractions. The feed amount of described hydrogenation pretre...

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Abstract

The invention discloses a process method for treating residual oil. A hydrogenation pretreatment unit, a coking device, a hydrogenation treatment unit and a catalytic cracking device are provided; the hydrogenation pretreatment unit comprises a hydrogenation pretreatment reaction area and a hydrogenation treatment reaction area; the process method comprises the following steps: performing a reaction on a residual oil raw material by using the hydrogenation pretreatment unit, and performing oil fractionation so as to obtain light fraction and heavy fraction, feeding the heavy fraction into the coking device for treatment so as to obtain coked gasoline, coked diesel oil and coked wax oil, mixing the light fraction with the coked wax oil and hydrogen, passing through the hydrogenation pretreatment reaction area and the hydrogenation treatment reaction area which are connected in series, performing gas-liquid separation on a reaction effluent of the hydrogenation treatment reaction area, circulating vapor phase back to the hydrogenation pretreatment reaction area and/or the hydrogenation treatment reaction area, directly feeding liquid phase into the catalytic cracking reaction area for a catalytic cracking reaction, and separating a catalytic cracking reaction effluent, thereby obtaining a dry gas, a liquefied gas, catalytic cracking gasoline fraction, catalytic cracking area diesel oil fraction, catalytic cracking area recirculation oil and catalytic cracking area oil slurry. Due to adoption of the process method disclosed by the invention, the stable operation period of a device can be prolonged.

Description

technical field [0001] The invention relates to a method for lightening heavy oil, in particular to a method for treating heavy oil by using a coking-hydrogenation-catalytic cracking combined process. Background technique [0002] At present, the demand for gasoline, coal, diesel and other oil products, especially the demand for motor gasoline in the domestic and foreign oil product markets will continue to rise, while the demand for heavy fuel oil and other heavy oil products will show a downward trend. At the same time, the properties of crude oil are deteriorating day by day on a global scale, environmental protection regulations are becoming stricter, and increasingly stringent requirements are put forward for the quality of oil products. Therefore, how to realize the lightening of heavy oil and the continuous upgrading of the quality of gasoline and diesel products at a more economical and reasonable cost has become the focus of domestic and foreign refining industries....

Claims

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Application Information

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IPC IPC(8): C10G69/04C10G69/06
CPCC10G69/04C10G69/06C10G2300/107C10G2300/1077C10G2300/201C10G2300/202C10G2300/205C10G2300/206
Inventor 刘铁斌耿新国翁延博李洪广
Owner CHINA PETROLEUM & CHEM CORP
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