Heavy oil treating method and heavy oil treating system

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.

1 . A heavy oil treating method comprising the steps of:
 first step for supplying a heavy oil to a contact-reaction unit downwardly in a vertical direction from an upper portion of said contact-reaction unit, and for contacting said heavy oil to high temperature and high presser water supplied from a lower portion of said contact-reaction unit;   second step for dissolving a light oil into said high temperature and high pressure water in said contact-reaction unit, and for separating a heavy oil into a heavy oil components and a light oil components by a precipitation process, said heavy oil components not being dissolved in the high temperature and high pressure water, said light oil components being dissolved in the high temperature and high presser water; and   third step for extracting said heavy oil components from a lower portion of said contact-reaction unit, and for extracting said light oil components from an upper portion of said con tact-reaction unit.   
   
   
       2 . A heavy oil treating method according to  claim 1 , wherein said high temperature and high pressure water is a supercritical water or sub-critical water. 
   
   
       3 . A heavy oil treating method according to  claim 1 , wherein said high temperature and high pressure water contains an oxidant, not containing an alkaline metal. 
   
   
       4 . A heavy oil treating method according to  claim 1 , wherein, based on a temperature measured value of reformed fuel produced by reacting the heavy oil and the high temperature and high pressure water with each other, the time of starting supply of the reformed fuel to a gas turbine is decided.