Testing method and device for titanium alloy corrosivity under different ozone concentrations

Abstract

The invention provides a testing method for titanium alloy corrosivity under different ozone concentrations. The method comprises the steps that 1, a titanium alloy material is treated; 2, a constant temperature water bath device and a glass bottle are adopted for simulating the internal temperature environment and humidity environment in a denitration device; 3, an oxygen bottle is opened for conveying oxygen; 4, a power source of an ozone generator is turned on for preheating the ozone generator for 30 minutes; 5, the ozone generator is used for generating ozone; 6, the ozone is introduced into the glass bottle to corrode the titanium alloy material; 7, the corrosion condition of the titanium alloy material is tested; 8, the corrosion rate is calculated. By the adoption of the testing method, corrosivity of the ozone to the titanium alloy material can be evaluated accurately, the tested ozone concentration range is wide, temperature in the testing process can be controlled accurately, the atmosphere and environment in the denitration device can be simulated, and a scanning electron microscope is adopted for representing microtopography before and after a titanium alloy is corroded.

Description

technical field [0001] The invention relates to the field of petrochemical technology, in particular to a test method and a test device for the corrosion resistance of titanium alloys under different ozone concentrations in a denitrification device. Background technique [0002] Since the 1970s, NO X The problem of air pollution has been paid more and more attention, NO X It is a major air pollutant that can form acid rain, cause photochemical smog, and destroy the atmospheric ozone layer. At present, most of the denitrification devices in the petrochemical industry mostly use the ozone oxidation denitrification method. Ozone oxidation denitrification method is to use ozone oxidation to realize NO in flue gas X The removal of the ozonation reaction product is harmless [0003] o 2 , itself can also be decomposed into O 2 , and no other impurities are introduced during the denitrification process, the product NO after NO oxidation X (X>1) are mostly soluble in water...

AI Technical Summary

Problems solved by technology

[0005] At present, there is no test method for the corrosion of ozone to titanium alloys, so it is impossible to accurately evaluate the corrosion of ozone to titanium alloy pipelines in the denitrification device

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