TwinAbsorb® EV
TwinAbsorb® EH
TwinAbsorb® V
TwinAbsorb® H

TwinAbsorb®

Nozzles for wet flue gas desulphurisation

The innovative technology of Lechler TwinAbsorb® nozzles ensure for an efficient flue gas cleaning and reliable SO2 separation. Their improved efficiency, the reduced operating costs together with the low maintenance costs make TwinAbsorb® nozzles, from a process technology as well as economical consideration, the first choice for power plant operators, but also for operators of waste-to energy plants with wet flue gas cleaning processes.

Technical data (pdf, 822 KB)
Contact
Lechler GmbH, Metzingen
Fon +49 7123 962-0
Fax +49 7123 962-301
info(at)lechler.de

Properties

Spray angle
Spray angleAccording to customer requirements
All connecting type possible
All connecting type possibleFlange, laminating connection, round thread, clamping connection
Version
VersionPossible as hollow or full cone nozzle
Version
VersionAs equilateral or bi-directional nozzle
Insensitive to clogging
Insensitive to cloggingdue to the large free cross-sections
Self-emptying
Self-emptying
Material version
Material versionin SiC/SiSiC

The TwinAbsorb® nozzles are characterised by the patented technology of the double hollow or double full cone with only one inflow. By a doubling of the spray cone, the nozzles achieve more fine droplets (SMD D32) compared to nozzles with single spray cones. The TwinAbsorb® is not only particularly beneficial with large volumetric throughputs per nozzle. When maintaining the posative properties of standard tangential full or hollow cone nozzles, further process-related benefits result:

  • Improved material exchange from higher relative velocities from the gas flow
  • No introduction of additional swirling in the gas flow
  • Supports a more uniform gas distribution over the washer cross-section
  • Reduced torque on the pipelines

With the bi-directional TwinAbsorb® nozzles TAV and TAH, further process-related benefits result from the spray jets directed upwards and downwards with counter swirl-direction

  • Doubling of the hydraulic spray levels compared to single directed nozzles
  • Reduced pressure loss when used in counter-flow washers
  • Increased dwell time of the droplets in the gas flow
  • Increased turbulences in the droplets for active material exchange

Variants of the TwinAbsorb® nozzle

Sprühbild TwinAbsorb® Equilaterale Doppel-Vollkegeldüse (TAEV)

TwinAbsorb® equilateral double full cone nozzle (TAEV)

The proven equilateral double full cone nozzle TAEV generates two full cones with only one inflow.

  • Optimized covering of the washer edge zone compared to conventional full cone nozzles.
  • Reduced wall loss compared to hollow cone nozzles.
Sprühbild TwinAbsorb® Equilaterale Doppel-Hohlkegeldüse (TAEH)

TwinAbsorb® equilateral double hollow cone nozzle (TAEH)

The proven equilateral double hollow cone nozzle TAEH generates two hollow cones with only one inflow.

  • By optimization of the secondary atomisation, a highly efficient generation of fine droplets takes place in the collision area without additional energy input.
  • At the same time, an improved coverage of the washer cross-section is achieved compared with conventional hollow cone nozzles.
  • Enlarged exchange surface compared with full cone nozzles.
TwinAbsorb® Doppel-Vollkegeldüse (TAV)

TwinAbsorb® double full cone nozzle (TAV)

The proven bi-directional double full cone nozzle TAV generates two full cones with counter swirl-direction.

  • Better coverage of the washer edge zone compared to conventional full cone nozzles.
  • Reduced wall loss compared to hollow cone nozzles.
TwinAbsorb® Doppel-Hohlkegeldüse (TAH)

TwinAbsorb® double hollow cone nozzle (TAH)

The proven bi-directional double hollow cone nozzle TAH generates two hollow cones with counter swirl-direction.

  • By doubling the collision area, the secondary atomization is intensified and thus, an activated surface is generated for the quick exchange of material.

Lechler supports you with a process-oriented nozzle configuration that meets your requirements. Get in touch with us. We would be pleased to advise you.

Process-oriented nozzle configurationProcess-oriented nozzle configuration

Use

  • Separation of HCI/HF in acid washers by injection of raw acids
  • SO2 separation in flue gas washers by injection of lime milk / lime suspension
  • Colling and saturation of the flue gas

Areas of application

Desulphurization (DeSOx)

Professional separation of environmentally harmful sulphur oxides.

Professional reports

Spray technology is critical in helping a plant achieve optimal performance
Spray technology is critical in helping a plant achieve optimal performanceASME Power Conference 2009, Albuquerque (New Mexico), USARobert E. Van Durme, P.E.Read now (pdf, 450 KB)
Improving the FGD absorber and ESP performance at Iskenderun power plant
Improving the FGD absorber and ESP performance at Iskenderun power plantVGB PowerTechGürkan Atmaca, Werner Stratmann and Birgit WortmannRead now (pdf, 12 MB)