Printing & Packaging: choosing the air depuration system
Printing & Packaging: choosing the air depuration system
This document provides an overview of air depuration systems used in the printing and packaging industry, specifically focusing on flexographic and rotogravure printing processes. It outlines the characteristics of these processes, the solvents used, and compares two types of fumes cleaning systems: Solvent Recovery Plant and Regenerative Combustion Plant.
- Uses light-sensitive polymer plates.
- Suitable for various production types.
- Common solvent mixture: 30% Ethyl acetate and 70% alcohol.
- Involves coupling a plastic film with another material like paper or cardboard.
- Uses glue containing solvents, typically Ethyl acetate, for quick drying.
- Images are engraved onto a cylinder.
- Ideal for high production volumes with quick drying times.
- Common solvents: Ethyl acetate or Toluene.
- Solvent Recovery Plant: Utilizes monosolvents like Ethyl acetate, Toluene, or Hexane. Requires a minimum air flow rate of 5,000 Nm3/h and solvent quantity of 20 kg/h. Advantages include solvent reuse and short investment payback. Not suitable for small plants.
- Regenerative Combustion Plant: Handles a mixture of solvents with a minimum air flow rate of 2,000 m3/h and solvent quantity of 5 kg/h. Offers flexibility in solvent choice and production organization.
- Solvent Recovery Plant is advantageous for solvent reuse and independence from suppliers but is limited to single solvent types and larger plant sizes.
- Regenerative Combustion Plant provides flexibility and ease of operation but may not be economically beneficial for smaller solvent quantities.
- Solvent Recovery Plant: Processes 15,000 Nm3/h of air, 50 kg/h of solvent, and uses 300 kg/h of steam and water, with 40 kW of electricity. Recovers 47 kg/h of solvent.
- Regenerative Combustion Plant: Processes 15,000 Nm3/h of air and 10-30 kg/h of solvent, using 10-20 m3/h of methane and 30 kW of electricity.
Catalog excerpts
PRINTING & PACKAGING - CHOOSING THE AIR DEPURATION SYSTEM - VENTILAZIONE INDUSTRIALE srl Via Adamello, 9 – 20851 Lissone (MB) – Italy www.amboso.com – [email protected]
Open the catalog to page 1
PRINTING PROCESS ROTOGRAVURE PRINTING FLEXOGRAPHIC PRINTING Characteristics: - The image is engraved onto a cylinder - Technology suited to high production volumes - Quick drying time is needed Characteristics: - Printing with plate light-sensitive polymer - Technology suited to various production COUPLING Characteristics: It is a process where a plastic film is coupled with either another plastic film or paper/cardboard, etc. Solvent used: The solvent is contained in the glue used to adhere the two layers; in this process (above all in food industry) is required quick and safe drying timing...
Open the catalog to page 2
COMPARATIVE TABLE SOLVENT RECOVERY PLANT REGENERATIVE COMBUSTION PLANT Always monosolvent: ETHYLE ACETATE or TOLUENE or HEXANE Air flow rate to be treated Minimum 5.000 Nm3/h Usually smaller plants do not offer interesting economical benefits. Minimum 20 kg/h Minimum 5 kg/h When lower amounts of solvents are used, there is no economical benefit Solvent concentration in airstream More than 2 g/Nm3 to be treated - Reuse of recovered solvent - Greater independence from solvent suppliers - Short payback of the investment - Flexibility in the choice of solvents - Flexibility in the organization of...
Open the catalog to page 3
FLOW DIAGRAM SOLVENT RECOVERY PLANT Air : 15.000 Nm3/h Solvent: 50 kg/h SOLVENT RECOVERY PLANT VENTILAZIONE INDUSTRIALE srl Via Adamello, 9 – 20851 Lissone (MB) – Italy www.amboso.com – [email protected]
Open the catalog to page 4
FLOW DIAGRAM REGENERATIVE COMBUSTION PLANT Air : 15.000 Nm3/h Solvent: 10 - 30 kg/h REGENERATIVE COMBUSTION PLANT VENTILAZIONE INDUSTRIALE srl Via Adamello, 9 – 20851 Lissone (MB) – Italy www.amboso.com – [email protected]
Open the catalog to page 5All AMBOSO catalogs and technical brochures
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- Radial fan
- Solids separator
- Air circulation fan
- Industrial fan
- Extraction fan
- Industrial use filter
- Centrifugal classifier
- Particle separator
- Exhaust fan
- Activated carbon filter
- Air separator
- Stationary fume extractor
- Filter for chemical applications
- High-efficiency separator
- Dust fume extractor
- Cyclone classifier
- Rotary valve
- Dry separator
- Belt-driven fan
- Scrubber System