Regeneration method of gas filter element

Abstract

The invention relates to a regeneration method of a gas filter element. The gas filter element is integrally arranged in a combustion-supporting gas with an oxygen volume ratio of 0.01 to 20 percent, the combustion-supporting gas is enabled to have the oxidizing reaction with impurities on the surface of the gas filter element at a set temperature, and the impurities can be removed. By adopting the regeneration method of the gas filter element, not only can a good gas filter element dust removal regeneration effect be achieved, but also the damage of the gas filter element is slight, the gas filter element can be used for a long time; moreover, a flux after the gas filter element is regenerated is obviously restored, and the flux can basically reach that at an initial state of the gas filter element.

Description

technical field [0001] The invention relates to a method for regenerating a gas filter element, and is particularly suitable for but not limited to a method for regenerating a high-temperature filter element through micro-oxygen gas in the coal chemical industry. Background technique [0002] As my country's current energy situation is a shortage of oil and natural gas resources, while coal resources are abundant, the compound application of coal resources is the overall direction of my country's energy development. However, there are still many problems and challenges in the process of coal conversion and utilization, including low comprehensive utilization efficiency, serious environmental pollution, shortage of water resources and large carbon dioxide emissions. Therefore, it is an inevitable choice for the development of my country's energy industry to develop coal efficient and clean comprehensive utilization technology to achieve energy conservation and emission reduct...

AI Technical Summary

Problems solved by technology

However, this method has a large heat release during combustion, and it is difficult to control the combustion temperature

At the same time, because the gas filter element is usually installed in the filter device during combustion, that is, the gas filter element is in an online state, the gas flow state at different positions in the filter device is different, resulting in the content of the gas around the gas filter element at different positions. The oxygen content is different, and the degree of sufficiency of burning impurities on the surface is different.

Moreover, there will be a dead zone in the filter device, and the heat generated during combustion cannot be taken away by the gas, making the local temperature very high

These factors will cause the temperature of the gas filter at different positions to be different when the gas filter is regenerated by high-temperature combustion. Even the temperature of different positions of the same gas filter will be different. It is very easy to cause high local temperature of the gas filter and cause deformation and damage of the gas filter.