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DSI Trockensorbens-Eindüsung

DSI Trockensorbens-Eindüsung

Trockene FGD-Systeme mit DSI-Trockensorbens-Eindüsung: SO2- und Säuregasabscheidung bis 99 % Wirkungsgrad bei geringem Wasserverbrauch. DUCON — MDSJ Process.

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DSI Trockensorbens-Eindüsung

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DSI Trockensorbens-Eindüsung

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DSI Trockensorbens-Eindüsung
DSI Trockensorbens-Eindüsung

DUCON Systeme bietet verschiedene Arten von trockenen FGD-Systemen an:

Trockensorbens-Eindüsung, trocken zirkulierende Reaktoren und halbtrockene FGD-Systeme werden eingesetzt, um Schwefeldioxid, Chlorwasserstoff und andere toxische Gasbestandteile sowie Partikel aus Rauchgasen zu entfernen.

DUCON kann folgende chemische Reagenzien einsetzen:

Je nach Systemanforderungen Kalk, Trona oder Soda. Ein trockenes System verwendet zur Partikelabscheidung entweder einen Schlauchfilter oder einen Elektrofilter. DUCON Umweltsysteme kann darüber hinaus Quecksilber, Dioxine und andere Schwermetalle durch die Eindüsung von imprägnierter Aktivkohle abscheiden. In einem halbtrockenen System verwendet DUCON Zweistoffdüsen, um die flüssige Reagenziensuspension in feine Tröpfchen zu zerstäuben. Während diese Tröpfchen verdampfen, werden zugleich die gasförmigen Schadstoffe abgeschieden. Alle trockenen FGD-Systeme erzeugen trockene Abfallprodukte und verbrauchen im Vergleich zu einem nassen System weniger Wasser. DUCON kann trockene FGD-Systeme für Eingangs-SO2-Konzentrationen von über 3000 mg/Nm³ liefern und Schadstoff-Abscheidegrade von bis zu 99 % erreichen. Alle trockenen FGD-Systeme werden für jede Anwendung individuell ausgelegt.

What is DSI?

  • Dry Sorbent Injection (DSI) is a modern technology used to remove acid pollutants (SO2, HCl, HF) from flue gas.
  • A powdered reactive material is injected directly into the flue-gas stream.
  • It stands out for its low capital cost and ease of installation.

How the system works

  • 1. Storage — Sorbents (trona or sodium bicarbonate) are kept in dedicated sealed silos.
  • 2. Injection — Precision dosing units distribute the material into the gas duct homogeneously.
  • 3. Filtration — Solid particles formed after the reaction are captured in the bag filter and removed from the system.

Why DSI? Advantages

  • Cost: Much lower capital expenditure compared to wet scrubbers.
  • Footprint: Compact design integrates easily with existing plants.
  • Water use: Fully dry process — no water consumption or wastewater treatment.
  • Flexibility: Real-time dosing adjustment to keep pace with variable emission limits.

Application areas

  • Thermal power plants (coal and biomass).
  • Waste-incineration facilities.
  • Glass and ceramics factories.
  • Cement and lime production plants.
  • Iron-steel and metallurgy facilities.

Technical note

  • For removal efficiencies above 95%, in-line milling systems that increase the sorbent's active surface area can be integrated into our solutions.

Frequently Asked Questions

What is the main difference between DSI and a wet scrubber?

DSI uses a dry reagent and the reaction product is captured in the existing bag filter, whereas a wet scrubber uses liquid reagent in a scrubbing tower and generates wastewater.

Is DSI compatible with my existing bag filter?

Yes — DSI is typically integrated upstream of the existing bag filter; the filtration area and pressure-drop margin should be re-checked.

Which sorbent should be used?

Sodium bicarbonate or trona usually performs best for SO2-driven emissions; hydrated lime is typical for HCl/HF-driven emissions.

Quick Info

Neutralizes acid pollutants (SO2, HCl, HF) directly in the gas phase
Significantly lower initial investment than wet scrubbers
Fully dry process — no water consumption or wastewater treatment needed

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