Waste-Disposal

 

Fluidized Bed Incineration

Flow sheet of Eisenmann fluidized bed incinerator
Zoom
Flow sheet of Eisenmann fluidized bed incinerator
Flow sheet of Eisenmann fluidized bed incinerator

Eisenmann’s stationary fluidized bed incinerators are primarily used for the thermal treatment of comminuted waste in the form of solids (e.g. biomass) or viscous sludge (e.g. dehydrated sewage sludge, oil sludge). Naturally, the fluidized bed process can also be deployed for special plant such as the gasification of waste plastics.

In line with your needs, Eisenmann can provide you with fluidized bed incineration in the form of individual components or a complete system solution. In addition to combustion, the system solution includes downstream waste heat recovery, precisely configured to make full use of the resulting flue gas, and flue gas purification in line with regulatory requirements.

Essentially, stationary fluidized bed incineration involves three components:

Windbox

  • Intake of high-pressure fluidizing air
  • Nozzle floor provides the “lid”

Sand bed/fluidized bed

  • Depending on the application, consists of an inert substance, the feed material, or a catalytically active material
  • Located above the nozzle floor
  • Fluidized by the ascending fluidizing air
  • High turbulences in the fluidized bed result in effective heat and mass transfer.

Freeboard

  • Refers to the space above the fluidized bed
  • Post-combustion of the flue gases given off by the fluidized bed
  • In other words, no separate post-combustion chamber is required.

Applications

  • Combustion of solid waste (biomass, oil shale)
  • Combustion of viscous sludge (oil sludge,sewage sludge)

Advantages

  • Made-to-measure solution for your specific application
  • High flexibility in terms of feed materials
  • Highly effective generation of energy due to optimal heat and mass transfer
  • Homogeneous combustion
  • No moving parts in combustion zone
  • Ideal for autothermal combustion of low-calorific value input material

Reduces load of downstream flue gas purification, as acidic components (e.g. halogens, sulfur) can be contained in the fluidized bed through the use of additives (e.g. limestone).

Further Information

 

.

Pyrobustor® Dual-Chamber Rotary Kilns

Diagram Eisenmann Pyrobustor® dual-chamber rotary kiln
Zoom
Diagram Eisenmann Pyrobustor® dual-chamber rotary kiln
Diagram Eisenmann Pyrobustor® dual-chamber rotary kiln

Eisenmann’s patented Pyrobustor is an ideal solution for incineration of sewage sludge with a throughput of up to 1,000 kg of dried sewage sludge per hour.

In line with your needs, Eisenmann can provide Pyrobustor in the form of individual components or a complete system solution. In addition to combustion, the system solution includes downstream waste heat recovery, precisely configured to make full use of the resulting flue gas, and flue gas purification in line with regulatory requirements.

In two sequential steps, Pyrobustor transforms high-calorific value dried sewage sludge into pyrolysis gas and ashes suitable for disposal in a landfill:

  • First stage – pyrolysis: The material is fed in the pyrolysis chamber, where it is pyrolyzed. This produces coke, which is transferred to the Pyrobustor’s oxidation zone, where it is completely combusted. The resulting pyrolysis gas has a high calorific value and can be used as fuel for subsequent process steps, such as post-combustion of any flue gases emitted by the process.
     
  • Second stage – oxidation: The pyrolysis coke is completely incinerated in the oxidation zone. The hot flue gas generated by this process is fed past the pyrolysis chamber via a ring gap, providing the energy required for pyrolysis by indirect heat input.

As the residual inert ash is conveyed towards the ash discharger, part of its heat energy is transferred back to the Pyrobustor’s oxidation zone. This also serves to cool the ash down.

Eisenmann solution Pyrobustor® dual chamber rotary kiln
Zoom
Eisenmann solution Pyrobustor® dual chamber rotary kiln
Eisenmann solution Pyrobustor® dual chamber rotary kiln

The heat stored in the hot exhaust gas coming out of the post-combustion chamber can be used to generate steam, or to heat thermal oil or process water, according to your needs.

 

Advantages

  • Efficient and reliable operation
  • Long and successful track record
  • Suitable for small mass flow rates of 400 kg/h and above
  • Ideal for decentralized sewage sludge incineration on site
  • Which translates into: Safe, reliable disposal, Prevention of waste tourism
  • Saves operating costs by recovering the energy stored in the sewage sludge
Thermal treatment of sewage sludge

  • .

    Further Information

    Waste Disposal

    Eisenmann rotary kiln with all-steel construction and counter-current
    Zoom
    Eisenmann rotary kiln with all-steel construction and counter-current
    Eisenmann rotary kiln with all-steel construction and counter-current

    Eisenmann rotary kilns are ideal for waste heat recovery from solids and/or sludge. Depending on the input material, you can deploy brick-lined or all-steel rotary kilns. The input material also determines whether the kiln is operated in co-current or counter-current mode. Eisenmann designs and supplies peripheral components, such as input material storage and preparation, feeding systems, waste heat recovery and made-to-measure flue gas purification systems, customized to suit your requirements and in line with your input material.

    Eisenmann can provide rotary kilns in the following configurations:

    • Directly or indirectly heated
    • Co-current (burner and feeding system located at same end) or counter-current (burner and feeding system located on opposite ends) operation
    • All-steel (T < 650/700°C) or brick-lined (T > 700°C) construction

    Applications

    Thermal treatment of solid waste

    • Hazardous waste incineration
    • Weapons destruction
    • Incineration of toxic substances
    • Incineration of persistent organic pollutants (POPs)
    • Incineration of sewage sludge/dried sewage sludge 
    • Oil removal from mill scale
    • Incineration of shredder residues
    • Incineration of residual fractions of domestic/commercial waste
    • Thermal treatment of contaminated soil

    Thermal treatment of viscous waste

    • Oil sludge disposal/refinery sludge incineration
    • Hazardous waste incineration
    • Combustion of toxic materials

    Advantages

    • Can be employed for a wide variety of purposes
    • Robust design
    • Extremely flexible
    • Made-to-measure storage and feeding systems
    • Customer-specific types
    Operation of Armored Rotary Kiln

    .

    Further Information

    The Turaktor® High-Turbulence Combustion Chamber

    Inside view of the Turaktor®
    Zoom
    Inside view of the Turaktor®
    Inside view of the Turaktor®

    The Eisenmann Turaktor high-turbulence combustion chamber is ideal for the thermal treatment of liquids, suspensions, harmful gases and dust at temperatures up to 1,400 °C.

    The materials undergoing treatment are sprayed into the reactor chamber via an inlet nozzle. This creates turbulence in the Turaktor high-turbulence combustion chamber and ensures optimum heat and mass transfer conditions.

    Version 1

    How version 1 of the Turaktor works
    Zoom
    How version 1 of the Turaktor works
    How version 1 of the Turaktor works

    The input material (e.g. liquid waste) is injected into the rising swirl of hot gases inside the Turaktor. As a result, the educt is thoroughly mixed with the rising hot gases. This ensures almost instantaneous conversion of the pollutants and complete oxidation of the injected material.

    Depending on the application, the reaction products are either recyclable materials (e.g. for the recovery of precious metals) or inert ash suitable for landfill disposal.

    Version 2

    How version 2 of the Turaktor works
    Zoom
    How version 2 of the Turaktor works
    How version 2 of the Turaktor works

    This version is used for slag-forming waste. The burner is located in the top section of the Turaktor high-turbulence combustion chamber. Because of the special form of the burner and the tangential orientation of the inlet nozzles in the combustion zone, strong turbulences are produced which guarantee complete oxidation of the hazardous waste. The flue gases are discharged at the bottom of the Turaktor together with the slag.

    In accordance with the customer’s requirements, Eisenmann can provide the Turaktor as a stand-alone component or as a complete solution. The complete solution comes equipped with a downstream waste heat recovery system perfectly tailored to the flue gas produced by the reactor and a flue gas purification system that complies with all relevant statutory requirements.

    Applications

    Disposal of toxic liquids and gases

    Low-calorific-value liquid or gaseous waste is fed directly into the top of the high-turbulence combustion chamber. Liquid or gaseous waste with a higher calorific value, by contrast, is fed into the Turaktor’s pre-combustion chamber in order to make efficient use of its fuel value.

    Where required, the Eisenmann Turaktor high-turbulence combustion chamber is equipped with a waste heat recovery system and with a downstream flue gas purification system tailored to the requirements of the flue gas, e.g. with quencher, washing columns and wet electrostatic precipitator.

    Disposal of slag-forming liquids

    Following the oxidation of hazardous materials at 1,100 °C, the flue gases are removed from the bottom section of the Turaktor high-turbulence combustion chamber together with the slag and instantly colled in a quencher located below the Turaktor.

    As a result, the solidified slag can easily be removed. The cooled flue gas is purified in an extensive downstream flue gas purification system in accordance with statutory requirements.

    Thermal treatment of

    • Persistent Organic Pollutants (POP's)
    • Hazardous waste/toxic materials
    • Hazardous gases
    • Liquid waste and production residues
    • Precious metal recovery
    • Catalyst regeneration

    .

    Further Information

     

    The Eisenmann Chambustor® Chamber Kiln

    Flow sheet of the Eisenmann Chambustor® chamber kiln
    Zoom
    Flow sheet of the Eisenmann Chambustor® chamber kiln
    Flow sheet of the Eisenmann Chambustor® chamber kiln

    The Chambustor chamber kiln developed by Eisenmann is employed e.g. to recover precious metals from solid and viscous materials. The Chambustor chamber kiln is also used for the environmentally-friendly disposal of highly toxic or contaminated materials.

    The Chambustor, used for batch processing, represents a cost-efficient solution for the disposal of waste produced discontinously or in small quantities.

    Materials to be treated thermally are fed into muffles or tanks. The Chambustor chamber kiln can be filled automatically or manually. Liquid waste can be evaporated in a controlled manner in open vessels.

    Models

    • Chamber kiln (batch mode)
    • Roller-type kiln (continuous mode)
    • Shuttle kiln (quasi-continuous mode)

    Applications

    • Oil removal from mill scale and mill scale sludge
    • Recovery of precious metals
    • Catalyst regeneration
    • Treatment of contaminated soil
    • Treatment of hazardous waste/toxic materials

    The Eisenmann Chambustor chamber kiln is also employed for the safe disposal of ammunition.

    Advantages

    • Conversion of organic content by oxidation
    • Cost-efficient process for the thermal treatment of small waste quantities
    • Batch operation
    • Temperatures up to 1.000°C possible
    • Customer-specific types

    Further Information

     

    .

     

     

     

     

     

     

     



    Eisenmann operates /span>test plants for waste water treatment. We use them not only to optimize or develop our own products but also to resolve problems for our customers or for trials at the customer site. Talk to us!.