Nozzles and engineered solutions

are used in many fields in the chemical industry and process industry

The following graphics show exemplary application possibilities for nozzles and engineered solutions in the chemical and process industry. Sample products that are typical for these applications are listed below.

Nozzles and engineered solutions for upstream processes

Lechler Düsen und kundenspezifische Systeme in der chemischen IndustrieFor cooling and sprinkling tanks and systems, it is extremely important to spray the entire object with water on all sides or to provide an even water film on the object. The narrowest cross section of the nozzles should be ≥ 6 mm (DIN 14495). Tongue-type nozzles and full cone nozzles are frequently used.Droplets can be carried along in the gas flow. Lechler droplet separators remove droplets from the gas flow in order to prevent down-stream measuring devices from being affected. Special full cone nozzles are available for cleaning droplet separators.If the waste gas is to undergo absorption, Lechler full cone, hollow cone, or cluster nozzles are used. It is of crucial importance here to create a large specific reaction surface. The efficiency of the process can be decisively enhanced by making the right nozzle selection and having an optimum nozzle arrangement.In gas cooling, a liquid is added via nozzles that, under some circumstances, evaporates completely and thereby absorbs the thermal energy of the gas. Complete evaporation requires very fine droplets which can be produced with hollow cone or twin-fluid nozzles.Centrifuges are used to separate materials. Full cone and flat fan nozzles are used for this purpose to spray water on and wash out the material that is to be removed.

Examples engineered solutions

Examples spray nozzle solutions

Droplet separators
Droplet separators

  • Arrest finest droplets (< 10 μm)
  • Little pressure loss
  • For high flow rates
     

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Nozzle lances and injector
Nozzle lances and injector

  • Optimal spray placement
  • Individual adapted
  • Several options


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Full cone nozzles - series 490
Full cone nozzles - series 490

  • Non-clogging design
  • Stable spray angle
  • Particularly even spray distribution


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Twin-fluid nozzles
Twin-fluid nozzles

  • Very fine droplets
  • Smallest flow rates
  • Atomizing viscous liquids


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Nozzles and engineered solutions for midstream processes

Lechler Düsen und kundenspezifische Systeme in der chemischen IndustrieOptimum container cleaning requires targeted harmonization with the customized application. Lechler offers a wide range of nozzles for tank and equipment cleaning and will support you in finding the right arrangement.High impact tank cleaning machines can be used in this application. These traverse a precisely defined path with gear-controlled solid stream nozzles. This gives them a great range. In smaller containers and systems, the precision jets can remove even persistent dirt.The thermodynamic processes of evaporation are normally applied in air cooling and humidification. This requires fine droplets that are injected directly into the air/gas flow by hollow cone or cluster nozzles. Producing the suitable droplet size and even distribution over the intake channel are particularly important here.

Examples engineered solutions

Examples spray nozzle solutions

Tank lances
Tank lances

  • Fully customized tank lance
  • Different materials
  • Different connection types
     

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Spray headers
Spray headers

  • Fully customized spray headers
  • Different materials
  • Twin-fluid nozzles possible
 

High impact tank cleaning machine - series 5TA/5TB/5TM
High impact tank cleaning machine - series 5TA/5TB/5TM

  • Powerful solid jets - highest impact
  • For persistent soil
  • Robust and proven construction


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Free spinning tank cleaning nozzles - series 569
Free spinning tank cleaning nozzles - series 569

  • Popular and proven
  • Effective flat jets
  • ATEX-approved version


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Cluster nozzles - series 502/503
Cluster nozzles - series 502/503

  • Full cone like distribution
  • Small droplets

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Nozzles and engineered solutions for downstream processes

Lechler Düsen und kundenspezifische Systeme in der chemischen IndustrieSpray nozzles are an essential item used in distillation of liquid mixtures for separating the mixture into its component parts or fractions, based on the volatilities. Tangential full cone nozzles provide large free cross sections and excellent spray distribution for this task.In some distillation processes, frothing can be a problem that occurs throughout. Full cone nozzles are used to control the foam because they provide full uniform spray coverage.Incoming gas is accelerated to a high velocity at the scrubber’s throat where it comes into contact with the scrubbing liquid. The liquid is atomized into fine droplets with hollow cone or full cone nozzles, which entrap the particulate with high collection efficiency.These types of heat exchangers convert steam from its gaseous state to a liquid state by using full cone nozzles. These nozzles provide good spray coverage for the large area with the greatest pump efficiency.

Examples engineered solutions

Examples spray nozzle solutions

Nozzle lances and injectors
Nozzle lances and injectors

  • Optimal spray placement
  • Individual adapted
  • Several options
     

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Pump and control skid units
Pump and control skid units

  • High-quality components
  • Tested quality
  • Perfectly tailored solution


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Tangential full cone nozzles - series 422/423
Tangential full cone nozzles - series 422/423

  • No swirl insert
  • Non-clogging
  • Stable spray angles


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Full cone nozzles - series 403/405
Full cone nozzles - series 403/405

  • High flow rates
  • Even spray distribution
  • Big droplets


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Nozzles and engineered solutions for processes for manufacturing basic chemicals

Lechler Düsen und kundenspezifische Systeme in der chemischen IndustrieA small hollow cone nozzle sprays fuel oil to produce the high temperatures required by the reactor.This heavy oil is injected into the reactor and the end result is a dry carbon product. Full cone nozzles with large free cross section are most suitable for this application.It is key in many chemical processes to rapidly quench the temperatures to control product output. Hollow cone nozzles are used for quenching because they produce fine droplets.Cooling hot gas with water using twin-fluid nozzles to increase the surface area and speed of evaporation. Additonally the process can be controlled with a Lechler pump and control skid VarioCool®.A pug mill is a machine in which clay or other materials are mixed into a plastic state or a similar machine for the trituration of ore. In this process full cone nozzles are used.

Examples engineered solutions

Examples spray nozzle solutions

Nozzle lances and injectors
Nozzle lances and injectors

  • Optimal spray placement
  • Individual adapted
  • Several options
     

More

Pump and control skid units
Pump and control skid units

  • High-quality components
  • Tested quality
  • Perfectly tailored solution


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Hollow cone nozzles - series 214/216/218
Hollow cone nozzles - series 214/216/218

  • Small droplets
  • Low flow rates


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Twin-fluid nozzles - series 170/180
Twin-fluid nozzles - series 170/180

  • Efficient atomization
  • Extremely fine atomization
  • Large free cross sections


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Twin-fluid nozzles – VarioJet®
Pneumatik-Zerstäuberdüse, VarioJet

  • Internal mixing
  • Innovative design
  • Very fine droplet spectrum


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Nozzles and engineered solutions for processes in specialty chemicals

Lechler Düsen und kundenspezifische Systeme in der chemischen IndustrieAn electrostatic precipitator (ESP) is a filtration device that removes fine particles from a flowing gas using the force of electrostatic charge minimally impeding the flow of gases through the unit. Full cone nozzles are used to wash the collected particulate from the collecting tube or plate.At the bottom of the wet ESP, above the gas distribution plates hollow cone and full cone nozzles are used in the vessel for pre-cleaning, gas cooling, scrubbing and particulate removal.These injectors use full nozzles, which are used to scrub salt-forming contaminants from preflash and atmospheric tower overhead systems before they react and cause corrosion.

Examples engineered solutions

Examples spray nozzle solutions

Droplet separators
Droplet separators

  • Arrest finest droplets (< 10 μm)
  • Little pressure loss
  • For high flow rates
     

More

Nozzle lances and injectors
Nozzle lances and injectors

  • Optimal spray placement
  • Individual adapted
  • Several options


More

Spray headers
Spray headers

  • Fully customized spray headers
  • Different materials
  • Twin-fluid nozzles possible
 

Full cone nozzles - series 490
Full cone nozzles, series 490

  • Non-clogging design
  • Stable spray angle
  • Particularly even spray distribution


More

Hollow cone nozzles - series 214/216/218
Hollow cone nozzles - series 214/216/218

  • Small droplets
  • Low flow rates


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Nozzles and engineered solutions for processes in air pollution control

Lechler Düsen und kundenspezifische Systeme in der chemischen IndustriePrecise cooling and conditioning of hot flue gases create stable outlet conditions for the safe and efficient operation of downstream plant components. Lechler is offering a wide range of engineered solutions to controll the outlet conditions of a gas cooling tower.The selective non-catalytic reduction (SNCR) is an industrial technique for NOx reduction. Twin-fluid or flat fan nozzle lances spray fine droplets of urea or aqueous ammonia directly into a furnace.With the selective catalytic reaction (SCR), achieving a high separation efficiency is possible only with the aid of a catalyst. Such a solution requires special precautions to keep the efficiency high and catalyst waste low. The reagent is added immediately before the catalyst using twin-fluid nozzle lances in a temperature window appropriate to the reaction.

Examples engineered solutions

Examples spray nozzle solutions

Nozzle lances and injectors
Nozzle lances and injectors

  • Optimal spray placement
  • Individual adapted
  • Many options
     

More

Pump and control skid units
Pump and control skid units

  • High-quality components
  • Tested quality
  • Perfectly tailored solution


More

Spillback nozzles
Spillback nozzles

  • Fine hollow cone atomization
  • Constant pressure
  • No compressed air


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Twin-fluid nozzles – Laval
Twin-fluid nozzles – Laval

  • Fine full cone atomization
  • Droplet size and spectrum can be adapted
  • For high temperatures


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Contact

Lechler GmbH, MetzingenPhone +49 7123 962-0Fax +49 7123 962-301info(at)lechler.de