Composite decarbonizing solution for recovering carbon dioxide in waste gas

Abstract

The invention relates to a composite decarbonization solution for reclaiming the carbon dioxide in the exhaust gas, wherein the component and the mass percent of the composite are that: 20-60 percent of composite amines solution, wherein one or more fast reaction rate amines with a low concentration and one or more slow reaction rate amines with a high concentration are comprised; 5-10 percent of Polyxinolum; 1-5 percent of antioxidant; 1-5 percent of inhibitor; and the rest is water. The invention has the advantage of a large absorbing capability to CO2, a high degree of purification, a light causticity, a little consume of the solution and a lower recycling energy consumption. High concentration CO2 for gas injection oil-recovery can be obtained.

Description

Technical field: [0001] The invention relates to a chemical solvent used for preparing carbon dioxide for gas injection in oil fields, which belongs to the gas separation and purification and oil recovery technology category. Background technique: [0002] Injecting various gases such as carbon dioxide, nitrogen, and flue gas into oil layers through gas injection wells to increase crude oil production and oil field recovery (that is, gas injection and oil recovery) is an important way of oil and gas production. In recent years, some oil fields, especially heavy oil areas, have recovered and utilized the flue gas produced in the steam production process of steam injection boilers to prepare carbon dioxide and nitrogen and inject them into oil layers as oil displacement agents while exploiting heavy oil by steam injection. Effect. However, the currently commonly used technology for producing carbon dioxide from flue gas from the recovery boiler still has shortcomings such as ...

AI Technical Summary

Problems solved by technology

However, the currently commonly used technology for preparing carbon dioxide from flue gas from a recovery boiler still has shortcomings such as insufficient recovery efficiency and purification degree, high solvent loss and high recovery energy consumption, and needs to be further improved and improved.