Selection of circulation pumps for ammonia-based desulfurization
Thread Content
The company is planning to undertake an ammonia-based desulfurization project, and a colleague suggested that engineering plastic pumps could be used for the circulation pumps, which would help save considerable costs and also avoid the problem of chloride ion corrosion. I earnestly ask all experts for their advice!
1# junhuachoi: You just need to provide the parameters of the circulation pump, namely the flow rate and head. As for the material issue, you can ask the equipment manufacturer. Each company has its own materials; if you use materials that are not suitable for that company, changing the manufacturer’s molds may not result in lower costs. For detailed inquiries, you can consult the equipment manufacturer
The main reason for 2# gcslong’s hesitation is that this is the company’s first attempt at using the ammonia process; the choice of material for the circulation pump is determined primarily by considerations related to wear and corrosion resulting from a potential chloride concentration of up to 40,000, as well as the solid content in the slurry. There are differing opinions within the company; if dual-phase stainless steel is used, the price is unacceptably high. As for choosing an engineering plastic pump, I haven’t used one before, so I’m not sure about it.
I’ve heard that pumps made of engineering plastics work well, but they have a low dust content; I’m not too familiar with the details. Ask the manufacturer.
We are using steel-lined ultra-high molecular weight polyethylene pumps from Yixing Zeus Pump Industry, and they have performed quite well; over 9 years, apart from the seal issues, there have been no major problems.
It is recommended to use silicon carbide pumps, as they offer excellent wear and corrosion resistance
Is it ammonia-based desulfurization? What are the values of pH, chloride ions, solid content, and ash content in the circulating slurry?