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Method for jointly treating heavy oil by supercritical water and supersonic separator

A supersonic separator and supercritical water technology, which is applied in the field of heavy oil upgrading, can solve the problems of increasing the risk of clogged pipelines and reactors, increasing the amount of coke, etc., to achieve light weight conversion, separation, and operating costs low effect

Inactive Publication Date: 2021-12-31
CNOOC TIANJIN CHEM RES & DESIGN INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method increases the temperature in the reactor, which can increase the modification effect to a certain extent, but increasing the temperature will also increase the amount of coke and increase the risk of clogging the pipeline and the reactor

Method used

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  • Method for jointly treating heavy oil by supercritical water and supersonic separator
  • Method for jointly treating heavy oil by supercritical water and supersonic separator
  • Method for jointly treating heavy oil by supercritical water and supersonic separator

Examples

Experimental program
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Effect test

Embodiment 1

[0040] This example is used to illustrate the method of co-processing heavy oil with supercritical water and supersonic separator provided by the present invention.

[0041] On the supercritical water reforming heavy oil device equipped with two-stage upflow supercritical water reactors, the inner diameter of the first-stage standpipe supercritical water reactor is 12mm, the height is 4m, and the second-stage standpipe supercritical water reactor The inner diameter of the reactor is 20mm and the height is 4m.

[0042] The mass flow rate of deionized water is 14kg / h. The deionized water is heated to 60°C and pressurized to 23MPa by a diaphragm pump. Oil sand bitumen is used as raw material. The properties of the heavy oil are shown in Table 1. The mass flow rate of the heavy oil is 7kg / h. The raw material of the heavy oil is heated to 60°C, pressurized to 23MPa by a diaphragm pump, and the oil-water mixture is heated to 400°C by a heater. , transported to the inlet of the firs...

Embodiment 2

[0044] This example is used to illustrate the method of co-processing heavy oil with supercritical water and supersonic separator provided by the present invention.

[0045] On the supercritical water reforming heavy oil device equipped with two-stage upflow supercritical water reactors, the inner diameter of the first-stage standpipe supercritical water reactor is 12mm, the height is 4m, and the second-stage standpipe supercritical water reactor The inner diameter of the reactor is 20mm and the height is 4m.

[0046] The mass flow rate of deionized water is 14kg / h. The deionized water is heated to 70°C and pressurized to 23MPa by a diaphragm pump. Using oil sand bitumen as raw material, the properties of the heavy oil are shown in Table 1. The mass flow rate of the heavy oil is 7kg / h. The heavy oil raw material is heated to 70°C, pressurized to 23MPa by a diaphragm pump, and the oil-water mixture is heated to 420°C by a heater. Transported to the inlet of the primary supercr...

Embodiment 3

[0048] This example is used to illustrate the method of co-processing heavy oil with supercritical water and supersonic separator provided by the present invention.

[0049] On the supercritical water reforming heavy oil device equipped with two-stage upflow supercritical water reactors, the inner diameter of the first-stage standpipe supercritical water reactor is 12mm, the height is 4m, and the second-stage standpipe supercritical water reactor The inner diameter of the reactor is 20mm and the height is 4m.

[0050] The mass flow rate of deionized water is 20kg / h. The deionized water is heated to 80°C and pressurized to 25MPa by a diaphragm pump. Using oil sand asphalt as raw material, the properties of the heavy oil are shown in Table 1. The mass flow rate of the heavy oil is 30kg / h. The raw material of the heavy oil is heated to 70°C, pressurized to 25MPa by a diaphragm pump, and the oil-water mixture is heated to 450°C by a heater. , transported to the inlet of the first...

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Abstract

The invention relates to a method for jointly treating heavy oil by supercritical water and a supersonic separator. The method comprises the following steps of: respectively heating and pressurizing heavy oil and deionized water, mixing the oil with the water, heating and conveying the mixture to a supercritical water reactor, and carrying out pyrolytic reaction on the heavy oil in the supercritical water reactor by utilizing a supercritical hydrothermal heavy oil modification technology to convert the heavy oil into light oil. After the heavy oil is modified, a supersonic separator is used for cooling and depressurizing to change the phase state and the dissolution characteristic of water, light and heavy components are separated, the heavy component asphaltene obtained through separation forms asphalt solid particles through a granulation tower, and the light component is subjected to cooling and depressurizing to realize separation of cracked gas, light oil and wastewater. According to the method, rapid reaction of the supercritical hydrothermal modified heavy oil is achieved, conversion of heavy oil into light oil is greatly achieved, rapid separation of light and heavy components of the modified oil product is achieved through the supersonic separator, and the whole technological process is simple and efficient.

Description

technical field [0001] The invention relates to the field of heavy oil upgrading, in particular to a heavy oil upgrading method utilizing supercritical hydrothermal cracking and supersonic separator technology. Background technique [0002] Heavy oil is a kind of unconventional oil resources, and its geological reserves are very rich. Heavy oil is characterized by high viscosity, high density, high freezing point, and high asphaltene content, so it is a poor-quality crude oil that is difficult to process and utilize. [0003] The study found that supercritical water modified heavy oil has a better effect of reducing viscosity and reducing weight. Compared with the thermal cracking reaction of heavy oil, supercritical water has particularly strong thermal conductivity, fluidity, and heat transfer. When supercritical water is used to modify heavy oil, supercritical water can inhibit coke formation. After the heavy oil is hydrothermally treated, it generally needs to go throu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G55/04
CPCC10G55/04
Inventor 李福双王银斌范景新吴青臧甲忠冯钰润李健李滨汲银平侯立伟隋云乐
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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