The innovative developments and improvements we continually create are the product of several decades of expertise in the field of extraction and dedusting plants as well as exhaust gas and flue gas cleaning. Particularly when it comes to flue gas cleaning in the demanding area of bio-based fuels, our new solutions set benchmarks for technology.
Our plants are able to satisfy the ever stricter environmental demands that are being placed on them, and their emissions fall considerably under the limit values. These plants are able to process between a few thousand and several hundred thousand cubic metres of flue gas per hour.
Cyclones such as spark and rotary separators, as well as tangential and axial cyclone systems, act as pre-separators and today, due to their limited degree of separation and for safety and economic reasons, they are primarily combined with additional dedusting systems such as or .
The multi-cyclone is used for the dry separation of dusts and gases. It consists of a specified number of separating elements that are mounted in a common housing and is used as a separator or pre-separator depending on the particular application - for air quantities from 800 Am3/h to 400,000 Am3/h. If greater air quantities are required, several multicyclones can be used in parallel - e.g. 2x400,000 Am³/h.
Scheuch electrostatic precipitators are an efficient, beautifully engineered solution for particulate control in biomass-fuelled boiler plants. They can be installed in any application that uses wood and wood waste, bark and so on.Electrostatic precipitators are exclusively used for dedusting clean gas dust loads of up to 10 mg/Nm³. With up to three electrical fields installed in series, it is possible to achieve degrees of separation of as much as 99% and above. Their real standout feature is their robust design, which takes account of operational modes and fuel fluctuations in practice. Operators particularly value their excellent accessibility, which allows maintenance and inspection to be performed with ease.
Due to their excellent filtration properties, fabric filter systems are ideally suited to separating fine dust up to a guaranteed value of < 5 mg/Nm³, and in combination with sorptive processes for reducing other contaminants. The following factors determine the quality of the filter bag material used:
Scheuch offers fabric filters in the form of compact units as well as single-chamber and multi-chamber filter systems with the patented system, depending on plant size.
When selecting the process, the resources and disposal costs as well as the expenditure required for spare parts and maintenance must be considered in the economic feasibility analysis.
Fluidised bed processes, which operate according to the principle of conditioned dry sorption, have increasingly been used for purifying flue gases for a number of years.
In the process of conditioned dry sorption with a , water is injected in order to cool the exhaust gas to a temperature of < 160 °C so that contaminant sorption can take place – if Ca(OH)2 is being used, 145 - 140 °C is ideal – and the flue gas humidity is raised as required to improve reaction conditions.
Direct conditioning of the recirculated material is achieved by applying water to the recirculated material for the purpose of self-reactivation. Conditioned sorption produces a significant improvement in the removal of acidic exhaust gases.