Lührfilter - Fixed Bed Mobile Adsorber

• PEC DD / PCDF
• heavy metals, i.e. mercury
• hydrocarbon compounds
• gaseous inorganic substances such as HCl, SO2, H2S at grainy activated carbon / -coke or other coarse-grained sorbents.

Advantageous features of LUEHR fi xed bed / mobile bed adsorbers:

• Simple plant technology with low maintenance
• Low investment and operating costs
• Achieve low residual concentration of particulate in the clean gas at good utilisation of adsorbing agent, i.e. due to a consistent inlet fl ow distribution over the complete gravel bed area, and a uniform discharge of adsorbent over the whole adsorber area
• Low pressure loss, i.e. due to uniform fl ow distribution across the entire bed area
• Depending on the application, selection of a variable bed thickness between approx. 500 and 1,000 mm
• High reliability i.e. due to a consistent fl ow across and through the entire bed material of adsorber

Sizes

• Volume fl ows up to max. 10,000 Am³ / h in one unit
• Volume fl ows of 10,000 Am³ / h up to approx. 40,000 Am³ / h by parallel arrangement of several  single units

Criteria for application

• Particle contents in the gas fl ow upstream adsorber < 5 mg / Nm³. To ensure that an early, partial replacement of adsorbent material does not become necessary (as a result of an excessive pressure drop, but only after saturation of adsorber material), it might be necessary to install a LUEHR fl at-bag fi lter for the particle separation upstream of a mobile bed adsorber.
• Gas temperatures < 150 °C

Handling of sorbent material

• The replacement of granular sorbent takes place during disconnected admission after saturation of material. The adsorber material is partly, or completely, discharged via collection hopper and manual damper, by means of manual operation of discharge grid. The new material is fi lled from above out of adequate transport containers (e.g. Big Bag) and evenly distributed over the entire bed area (Fixed bed adsorber).
• On request, the partial or complete discharge