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Klaus Emprechtinger

Head of Sales
Energy Industry


Tel +43 7752 905-5369
k.emprechtinger@scheuch.com

Georg Lechner

Head of Sales
Industrial Minerals Industry


Tel +43 7752 905-5138
g.lechner@scheuch.com

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Quecksilber-Abscheidung, Wietersdkorfer-Peggauer

Mercury separation

Scheuch xmercury separates mercury in passing streams

Scheuch xmercury helps separate mercury from the combustion process in a straightforward and process-safe way. The innovative Scheuch system means mercury-laden gas can be bound to activated carbon before being safely discharged.

To reduce mercury emissions, Scheuch has developed a technical innovation together with the company A-TEC and the W&P Group: the xmercury split preheater system. The results are astonishing.

FACTS:

  • Up to 80 % reduction in mercury emissions
  • Minimum costs for sorbent due to low consumption
  • Low energy costs (no additional heat loss)
  • Low gas quantity (3–10 % of the total quantity)
  • Process-integrated installation
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Home Products & solutions Exhaust Gas Cleaning Mercury separation

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xmercury Dry sorption
xmercury

Scheuch xmercury separates mercury in passing streams

The great advantage of the new system lies in its integration into the existing preheating process. During cement production, raw meal is ground in the raw mill and dried. The meal then moves into the preheater tower. Until now the isolated filter dust was fed back into the preheater tower. As a result, the concentration of mercury steadily increased with each cycle. The new xmercury system interrupts the circulation of mercury in an innovative way.
The filter dust enters the split preheater. There, the filter dust is reheated, as is already the case in the usual preheater tower. This causes the mercury bound to the dust to escape. The hot, mercury-free dust is then separated in a high-performance cyclone and the newly developed hot-gas filter. The dust is eventually guided to the main preheater tower and remains in the actual clinker burning process without losing any heat.
Next, the mercury-laden, dust-free exhaust gas is cooled to the final temperature of 100–120 °C. This enables energy to be recovered from the process at low cost. The sorbent is then added (for example, activated carbon), which binds to the mercury. A bag filter then separates the additive from the clean-gas stream. When the sorbent is recirculated, it is enriched with an unusually high concentration of mercury. This in turn ensures maximum usage of the sorbent and leads to extremely low consumption. As a result, the disposal volume of the mercury-laden, enriched activated carbon is very low.
Ultimately, an extremely high degree of separation can be achieved in the main kiln with the small xmercury system.

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Dry sorption

A typical Scheuch dry sorption plant consists largely of:

  • In some cases: a pre-separator (cyclone, multi-cyclone or spark separator)
  • Additive silo(s)
  • An additive loading point with one or more injection lances
  • A fabric filter for separation – plus an electrostatic precipitator in some cases
  • In some cases: a recirculation unit
  • Residual material silo(s)

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Grossaitingen
Grossaitingen
Grossaitingen

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xmercury Split Preheater System

xmercury Split Preheater System

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Our solutions for the Metals Industry

Our solutions for the Metals Industry

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Our solutions for the Industrial Minerals Industry

Our solutions for the Industrial Minerals Industry

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Contact

Do you have any questions?

Service is always a key part of our portfolio.

Georg Lechner

Georg Lechner

Head of Sales
Industrial Minerals Industry

Tel+43 7752 905-5138 g.lechner@scheuch.com

Klaus Emprechtinger

Klaus Emprechtinger

Head of Sales
Energy Industry

Tel+43 7752 905-5369 k.emprechtinger@scheuch.com

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