Alkali metal corrosion experiment device and method

Abstract

According to an alkali metal vapor corrosion experimental device provided by the invention, the temperature is adjusted and controlled by the temperature controller, and the temperature is measured by the thermocouple, so that the temperature control of a test sample in the alkali metal generator and the high-temperature tube furnace is realized; and the generation of alkali metal steam and the alkali metal corrosion experiment of the test sample to be tested can be controlled at the set temperature. The alkali metal generator provides generated alkali metal steam into the high-temperature tube furnace through flowing of inert gas, and the high-temperature tube furnace adjusts the atmosphere of the environment where a test sample is located through a gas cylinder, so that an alkali metal corrosion experiment is closer to the real environment. The detection method provided by the invention can be used for accurately measuring the corrosivity of the alkali metal to the refractory material, so that the safe and stable operation of the incinerator is ensured, and the method has practical guiding significance.

Description

[0001] The invention belongs to the anticorrosion field of refractory materials, and in particular relates to an alkali metal corrosion experiment equipment and process. Background technique [0002] The methods of biomass development and utilization include incineration power generation, gasification power generation, pulp and paper making, etc. Among them, pulping and papermaking is a typical biomass utilization, but there is a large amount of black liquor wastewater in pulping and papermaking. Organic wastewater, which mainly contains a large amount of organic matter and alkali metals. There are also many treatment methods for this type of wastewater, among which heat treatment is one of the main treatment technologies for papermaking black liquor and other high-concentration alkali-containing organic waste liquids. However, the heat treatment method is likely to cause the refractory materials on the furnace to be corroded and peeled off by alkali metals. The existing meth...

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Problems solved by technology

However, the heat treatment method is likely to cause the refractory materials on the furnace to be corroded and peeled off by alkali metals. The existing methods for dealing with alkali metal corrosion include burning anti-corrosion agents, spraying anti-corrosion layers, and preparing refractory boilers. Therefore, research on refractory materials to resist alkali metal corrosion The experimental setup is also particularly important

[0003] At present, the devices for the experimental research on the alkali corrosion resistance of refractory materials are mainly carried out under nitrogen atmosphere, which cannot truly restore the actual atmosphere in the furnace.

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