Piping selection for air compressor station systems
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According to the \"GB 50029-2014 Code for Design of Compressed Air Stations\", which parts of the pipeline systems in a compressed air station should be made of stainless steel? The pipeline in our facility that runs from the compressor to the dryer is severely corroded due to the formation of water deposits, which results in poor performance of the dryer.
I’m not quite sure how to understand the problem. For dehydration, there are indicators for the dew point, and this is of course very important. How to understand solid particles? It’s just that blockages in the pipeline and instrument air control circuits due to solid particles should not occur; I haven’t seen such things in over 20 years (I think they might be carried away by condensed water). I recently found out which company is responsible for supplying instrument air to our facility: the filters are not cleaned on a regular basis, and it seems like they serve no real purpose.
I originally used galvanized pipes throughout; the section from the air compressor to the dryer was severely rusted, and it worked well after replacing it with stainless steel pipes.
I’ve never seen galvanized pipes used for the outlet pipeline of air compressors; at least stainless steel should be used
The pipeline from the compressor to the dryer in our facility is made of carbon steel, and the moisture present in the compressed air causes corrosion of this pipeline (especially during summer), resulting in significant rust formation which affects the dryer. Personally, I think it’s very inappropriate to use carbon steel pipelines for this section.
It seems it’s necessary for our facility to switch to stainless steel as well.
Well, using stainless steel pipes should be able to solve this problem fundamentally.
It’s very necessary; it has a huge impact on the dryer.
Generally, the water dew point of the instrument air supply is required to be 10°C lower than the extreme minimum temperature in the location where the facility is installed. For projects within China (except for tropical regions such as Hainan and Taiwan), the extreme minimum meteorological temperature is usually at least -10°C℃； In regions such as Xinjiang and the Northeast, temperatures can drop below -40°C; therefore, the water dew point of the instrument air must be at least -20°C. This means that the required humidity level for the compressed air is at least grade 3 or higher. As a result, the instrument air pipelines should ideally be made of double-galvanized steel pipes, though stainless steel is also commonly used