Hurricane system to reduce PM from Syngas emanating from a gasifier with a 425m3/h gas flow rate at 160ºC.
ACS has experience in several gasification applications, including animal corpses (MVD=8.5µm; µ=95%), wood (MVD=100µm; µ=98%) and wood waste (MVD=50µm; µ=99,5%).
In gasification lines, concerns have to be taken regarding the peripheral equipment, namely rotary valves (ATEX certified) or sealing with water, so that 100% tightness is achieved, avoiding false air entries (and O2).
Mechanical ReCyclone Systems (ReCyclone MH) are a solution to improve cyclone efficiency, when working as a final dedusting system. They can work with several lines of Hurricane cyclones with different performances depending on the requests of the clients.
A ReCyclone® MH decreases emissions of Hurricane cyclones alone by 40 to 60 %
As with cyclone systems, ReCyclone® MH systems are very robust, do not have temperature limitations and do not have moving parts to be frequently changed.
In gasification lines, concerns have to be taken regarding the peripheral equipment, namely recirculation fan and rotary valves (ATEX certified) so that 100% tightness is achieved, avoiding false air entries (and O2).
For PM emission control in very high temperature exhaust streams ( >600ºC ), such as gasification, pyrolysis and incineration, traditional bag filters following temperature exchangers, ceramic filters, or scrubbers are used as end stage dedusters.
For most arrangements, a primary high temperature separator, namely a cyclone, is important to reduce as much ash and char as possible. A good efficiency is important to reduce concentration of solids to the final stage dedusters, avoiding plugging of scrubbers and damaging of filters.
Most arrangements have considerable investment and operation costs. Traditional bag filters imply the frequent change of bags and a high investment in temperature exchangers. Ceramic filters can withstand high temperatures but have a considerable pressure drop, typically up to 300mm w.g., gradually increasing due to clogging of the pores. The long-term durability and cracking risk (mainly during cleaning) of the elements are also critical.
Client's needs include an efficient and robust cyclone pre-separator and a very high efficient final stage dedusting system, which can operate at high temperatures with low maintenance/operating costs.