Hoogenboom Valves recently shipped a series of high grade stainless steel control valves. These valves will be part of a brand-new torrefaction plant for a leading chemical manufacturer in Japan.
Torrefaction is a state-of-the-art technology, which converts raw biomass materials, such as forestry and agricultural residues, into energy-rich biocoal pallets. These biocoal pallets provide an environmentally friendly replacement for fossil coal with significant cost savings benefits.
Designing these valves came with various engineering challenges in order to meet all of our customers’ requirements. The valves and the actuators had to be suited for an Atex environment. Several of the valves were designed to withstand continuous high temperatures of up to 700°C.
Due to the nature of the medium going through the valves there was a risk of material heaping up on the seat, which would prevent the valve from closing properly. In order to solve this problem our engineers designed a valve without seat. The blade was machined at a 5° angle, so that it would close seamlessly against the valve body for a proper shut-off.
