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Heavy oil treating method and heavy oil treating system

a technology of heavy oil and treating method, which is applied in the direction of water treatment, physical/chemical process catalysts, supercritical conditions, etc., can solve the problems of increasing fuel cost, affecting the efficiency of oil treatment, and affecting the quality of oil treatmen

Inactive Publication Date: 2009-02-05
TAKAHASHI HIROKAZU +6
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The present invention aims to modify heavy oil without using a catalyst, such as an alkali, by using high-temperature, high-pressure water to remove heavy metals and produce fuel for gas turbines. The invention involves contacting high-temperature, high-pressure water and heavy oil for a predetermined time, and then separating the light oil components from the heavy oil components containing metals by precipitation.

Problems solved by technology

However, adding an alkaline metal and others, as a modifying catalyst, in heavy oil is disadvantageous in that, when produced light oil is used as fuel for gas turbines, corrosion of gas turbine parts is caused unless the added alkaline metal and others are removed.
It is therefore problematic to employ the reformed light oil components, as they are, as fuel for gas turbines.
Further, repeating the modifying step increases the fuel cost.

Method used

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  • Heavy oil treating method and heavy oil treating system

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first embodiment

[0034]FIG. 1 shows a heavy oil treating system for treating heavy oil with high-temperature, high-pressure water, removing, from the heavy oil, metals contained in the heavy oil, such as vanadium, according to a first embodiment of the present invention.

[0035]In this system, water from supply 100 is pressurized to 20 MPa by a water supply pump 30 for supplying the water under pressure, and is then heated up to 480° C. by a water preheater 40, thereby producing high-temperature, high-pressure water 102. Similarly, heavy oil from supply 101 is pressurized to 20 MPa by a heavy oil supply pump 31 for supplying the heavy oil under pressure, and is then heated up to 350° C. by an oil preheater 41, thereby producing high-temperature, high-pressure heavy oil 103. While electric heaters are employed as the water preheater 40 and the oil preheater 41, the water and the heavy oil may be heated by heat exchangers using high-temperature steam.

[0036]A contact-reaction unit 1 is installed such tha...

second embodiment

[0045]This second embodiment represents a system for effectively utilizing waste heat of a gas turbine by supplying reformed oil, which is obtained by modifying heavy oil with high-temperature, high-pressure water, to a gas turbine combustor to generate electric power by the gas turbine, and by utilizing waste heat of combustion exhaust gas to produce the high-temperature, high-pressure water. The system of this embodiment will be described below with reference to FIG. 3.

[0046]In this system, water from supply 100 is pressurized to 20 MPa by a water supply pump 30 for supplying the water under pressure, and is then heated up to temperature of 450-480° C. by a water heat exchanger 50, thereby producing high-temperature, high-pressure water. Similarly, heavy oil from supply 101 is pressurized to 20 MPa by a heavy oil supply pump 31 for supplying the heavy oil under pressure, while steam extracted from the high-temperature, high-pressure water in a high-temperature, high-pressure water...

third embodiment

[0055]This third embodiment represents a control method for a system wherein reformed oil, which is obtained by reforming heavy oil with high-temperature, high-pressure water, is supplied to a gas turbine combustor to generate electric power by a gas turbine. The system and the control method will be described below with reference to FIG. 4. The system of this embodiment includes a gas oil tank 113 and a gas oil pump 32 for supplying gas oil to the combustor. The gas oil is burnt in the gas turbine combustor at startup of the gas turbine, and a water heat exchanger 50 is heated by combustion exhaust gas produced after driving the gas turbine.

[0056]In this system, as in the second embodiment, water from supply 100 is pressurized to 20 MPa by a water supply pump 30 for supplying the water under pressure, and is then supplied to the water heat exchanger 50. The pressurized water is heated up to temperature of 450-480° C. by the water heat exchanger 50, thereby producing high-temperatur...

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Abstract

The invention is intended to produce high-pressure light fuel gas with good combustibility by contacting and reacting high-temperature, high-pressure water and heavy oil with each other in a contact-reaction unit to extract light oil components from the heavy oil and to remove metals. The high-temperature, high-pressure water and the heavy oil are introduced to the contact-reaction unit for contact and reaction with each other therein. Heavy oil components not dissolved in the high-temperature, high-pressure water are separated by precipitation from hydrocarbon gases and light oil components which are dissolved in the high-temperature, high-pressure water. The separated heavy oil components are burnt or incinerated without any further modification.

Description

CROSS-REFERENCES[0001]This is a continuation application of U.S. Ser. No. 10 / 910,579, filed Aug. 4, 2004, the disclosure of which is hereby incorporated by reference, and which claims priority to JP 003-205953, filed Aug. 5, 2003.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a heavy oil treating method and a heavy oil treating system. More particularly, the present invention relates to a method of contacting heavy oil with high-temperature, high-pressure water to remove metal components in the heavy oil, thereby obtaining light oil containing hydrocarbon gases, which is suitable as fuel for use in gas turbines, etc.[0004]2. Description of the Related Art[0005]In view of that heavy oil containing a large amount of heavy metals is not suitable as fuel for generation of electric power by gas turbines, methods of removing those heavy metals for conversion into a useful energy source are proposed in Patent Reference 1 (JP,A 2000-109850, ...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10G31/06B01J3/00C10G27/04C10L1/00C10G29/00C10G31/08
CPCB01J3/008B01J4/002B01J2219/00006C10G31/08B01J2219/00166C10G27/04C10G31/06B01J2219/00094
Inventor TAKAHASHI, HIROKAZUINAGE, SHINICHIHOKARI, NOBUYUKIYAMAGISHI, MASAHIKOHAYASHI, AKINORIYOKOTA, OSAMIISHIBASHI, YOUJI
Owner TAKAHASHI HIROKAZU
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