Process method for modifying and processing extra-heavy crude oil

A process method and crude oil technology, applied in the petroleum industry, refining hydrocarbon oil, cracking, etc., can solve the problems of high equipment investment, high heavy metal content, unbearable demetallization ability, etc.

Active Publication Date: 2009-12-09
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] 2) Some heavy residue oils have high heavy metal content, such as Tahe heavy residue oil with a heavy metal content exceeding 300ppm, fixed bed hydrogenation cannot withstand the demetallization ability, and ebullating bed hydrogenation processes

Method used

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  • Process method for modifying and processing extra-heavy crude oil
  • Process method for modifying and processing extra-heavy crude oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] Example 1: Upgrading of Venezuelan extra-heavy crude oil

[0071] According to the process flow of accompanying drawing 1, Venezuelan extra-heavy crude oil and diluent oil are mixed at a ratio of 85:15, and preheated to a temperature range of 260° C., together with water vapor, are introduced into the riser reactor 3 from the bottom of the reactor, and regenerated with high temperature, Mix the catalyst (catalyst 1, with an activity of 25%) at a temperature of 750°C, maintain the outlet temperature of the riser at about 500°C, and carry out the catalytic cracking reaction at a pressure of about 0.14MPa. The catalyst-to-oil ratio is 14, and the catalyst contains less than 0.2% carbon after regeneration Take out cracked gas, light oil vapor and water vapor from the top of the reactor and enter the separation system through the pipeline 9, the light oil vapor comes out from the top of the fractionation tower 10, and the heavy component (containing oil slurry) at the bottom ...

Embodiment 2

[0075] Example 2: Upgrading of Venezuelan extra-heavy crude oil

[0076] According to the process flow of Figure 2, the Venezuelan super-heavy crude oil and diluent oil are mixed at a ratio of 85:15, and preheated to a temperature range of 260 ° C, introduced from the top of the reactor together with water vapor, and regenerated at a high temperature with a temperature of 760 ° C Catalyst (catalyst 3, activity is 30%) mixes, maintains reactor outlet temperature about 500 ℃, carries out catalytic cracking reaction under the pressure about 0.14MPa, and agent oil ratio is 11, and the carbon content of catalyst after regeneration is less than 0.2%; The cracked gas, light oil vapor and water vapor are taken out from the upper part and enter the separation system through the pipeline 9. The light oil vapor comes out from the top of the fractionation tower 10, and the heavy component (including oil slurry) at the bottom of the tower is discharged from the lower part of the fractionati...

Embodiment 3

[0079] Example 3: Canadian Oil Sands Bitumen Modification

[0080] The experimental device is the same as in Example 1. Mix Canadian oil sands bitumen with diluent oil at a ratio of 80:20. and preheated to a temperature range of 380°C, and introduced into the riser reactor 3 from the bottom of the reactor together with water vapor, and mixed with a catalyst (catalyst 2, with an activity of 8%) regenerated at a high temperature and at a temperature of 740°C to maintain the riser The outlet temperature is about 540°C and the pressure is about 0.25MPa to carry out the catalytic cracking reaction. The catalyst oil ratio is 6, and the carbon content of the catalyst after regeneration is less than 0.2%. Separation system, the light oil vapor comes out from the top of the fractionation tower 10, and the oil slurry exits the device from the lower part of the fractionation tower through the pipeline 14, and the oil slurry is mixed with the extraction solvent 1 (butane) to form a mixtu...

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Abstract

The invention relates to a method for modifying and processing extra-heavy crude oil. The method comprises the following steps: the extra-heavy crude oil is mixed with diluted oil, and the mixture is preheated to 250-350 DEG C and led into a catalytic cracking reactor to contact with a catalyst with the temperature of 670-760 DEG C for reaction; cracking gas, light-oil steam and water vapor are separated in a separating system; the rest catalytic cracking liquid residue, i.e. heavy components at a tower bottom and solvent enter an extraction tower for deasphalting the solvent so that the heavy components are separated into a heavy liquid phase rich in heave metals and asphaltine part and a light liquid phase containing deasphalted oil and solvent; and the light liquid phase enters a supercritical tower to carry out supercritical recovery of the solvent. The process method has the function of visbreaking, demetalization, desulfurization and decarburization in one step, ensures that theobtained modified oil has favorable stability with the fluidity satisfying the transportation requirement and provides high-quality raw materials with low sulphur, low metal and low residual carbon for processes of catalytic cracking, coking, and the like.

Description

technical field [0001] The invention relates to a process method for upgrading super-heavy crude oil, in particular to a process plan and technical method for visbreaking, demetallization, desulfurization and other upgrading treatments of heavy oil, residual oil and heavy crude oil. Background technique [0002] Generally, the index range of poor-quality crude oil is: crude oil meeting any one of the indicators of API degree less than 27, sulfur content greater than 1.5%, and acid value greater than 1.0mgKOH / g can be called inferior crude oil. [0003] Heavy oil (that is, heavy oil) has a large specificity (above 0.9), high viscosity (up to 1700mPa·s at 50°C), low light fraction (generally only about 4%), less wax content (less than 5%) and The freezing point is not high (5 ~ 22 ℃) and so on. [0004] Currently mature heavy crude oil processing technologies mainly include: [0005] 1. Coking [0006] From the recent development of heavy oil deep processing capacity in the...

Claims

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Application Information

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IPC IPC(8): C10G11/20C10G21/14C10G21/28
Inventor 付兴国刘显法庞新梅高雄厚李振昊
Owner PETROCHINA CO LTD
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