ASC-100 12 kW

Solvent Recovery System


ASC-100 12 kW

Functional description of the solvent recovery system 

The ASC-100 is a cost-effective alternative to the steam-driven solvent recovery systems. The ASC-100 is the smallest solvent recovery system from the professional ASC series.

Heating of the solvent recovery system ASC-100

The solvent recovery system as a modern integrated thermal oil heating system. A special feature of the solvent recovery system is the conical stainless steel distillation vessel, in which the shell surface of the solvent recovery system is heated with thermal oil. The hot oil in the double jacket of the solvent recovery system indirectly heats the solvent and then evaporates it. At the same time, a very good distillation performance is achieved with a small boiler volume.

Filling of the solvent recovery system

Only one electrical connection for the solvent recovery system is required for the integrated thermal oil heating. A high performance liquid ring vacuum pump conveys the dirt into the solvent recovery system evaporator and guarantees continuous 24 hour operation. During automatic distillation, the evaporated amount of solvent is automatically replenished into the solvent recovery system by the addition of dirt. This automatic mode can be set by timer.

Solvent Recovery System Safety Function

If the dirt tank of the customer contains no more solvent, the solvent recovery system receives a signal and automatically switches to "sump distillation". The continuous filling is stopped for the solvent recovery system and the amount of solvent still present in the solvent recovery system boiler is evaporated until the dirt becomes a thick concentrate. The solvent recovery system then switches off and is ready for manual or fully automatic emptying.

The distilled or purified solvent flows continuously from the solvent recovery system into the customer's on-site tank.

Perfect Scraper System in the solvent recovery system

A very clever innovation for this solvent recovery system: A further feature of the ASC solvent recovery system is a slow-running scraper agitator with automatically adjusting scrapers made of PTFE. This unique doctor blade system for solvent recovery systems has been further developed over 30 years and is now used in the solvent recovery system for its robustness and cleaning efficiency. Two strong blades made of PTFE optimally clean the conical solvent recovery system vessel and do not have to be readjusted. 

The doctor blades clean the solvent recovery system boiler wall over the entire filling area and not only at the boiler bottom like other solvent recovery system.

The contact pressure on the steep walls is optimal and large enough to prevent the build-up of deposits in the solvent recovery system.

Flexible process in the solvent recovery system and adaptation to customer requirements

The entire distillation process in the solvent recovery system is controlled by a SIEMENS SPS S7 1200. If the local requirements of the customer for his solvent recovery system change due to tanks, pumps or processes, the Siemens control system can be reprogrammed at any time and adapted to customer requirements and integration of the solvent recovery system. And this in national language bps. Chinese, Russian etc.! The OFRU solvent recovery system is multi-language ready.

Discharging the distillation residues from the solvent recovery system ASC-100

The viscous residues are emptied by gravity via a slide valve at the lowest point of the conically round boiler of the solvent recovery system. The solvent recovery system can then be automatically refilled with contaminated solvent. A new continuous treatment process begins.

  • Technical Data
  • Product Benefits
Technical data ASC-100 12 kW with vacuum
Boiler/vessel volume 140 l
Constant filling volume, level controlled ~ 80 l
Distillation rate approx. 20-60 l/hr*
Heating up time approx. 1 hr*
Heating temperature Max. 200 °C
Vacuum abs. Max. 50 mbar
Voltage 380-410 V / 50 Hz / 3 Ph + N
Power consumption thermal oil heating 12 kW
Power consumption vacuum unit 1.1 kW
Compressed air consumption approx. 6 bar, Max. 50 l/min.
Useful cooling capacity demand approx. 10 kW
Cooling water consumption (8-12° C) approx. 1 m³/hr
Width x depth x height approx. 1.65 x 0.93 x 2.65 (always depending on configuration and changes)
Weight approx. ~ 760 kg
  • Almost all parts in contact with the product in stainless steel
  • Automatic and continuous filling with contaminated solvents
  • Level level is kept constant, thus largely constant distillation capacity
  • Stainless steel conical distillation vessel: Simple and complete emptying of the boiler by gravity and scraper insert
  • Perfect doctor blade system: scraper blades scrape off the inside wall of the boiler, no readjustment necessary. Optimum tank cleaning guaranteed
  • Thermoil heating integrated
  • Water cooling: Optimum condensation of the solvent vapours even at high ambient temperatures
  • Switch cabinet IP54, with digital SIEMENS control S7 1200
  • Switch cabinet with SIEMENS HMI colour TFT-Comfort Panel with touch operation and process overview
  • Automatic mode
  • Auto-Stop: If dirty barrel or storage tank is empty, if temperature errors occur, if no thermal oil is available, if no cooling water is available
  • Constructed according to the latest European directives: Operational safety at a high level

*Depending on type and composition of solvent, type and proportion of contamination, heating temperature, vacuum, cooling water pressure and temperature, boiling behaviour.
**Accompanying depot agent according to Directive 2014/34/EU

Typical distillation performance, after practical experience:

Ethanol / ethyl acetate in flexo printing: approx. 20 l/hr. If nitrocellulosic solvents are used, for safety reasons heating is only carried out at max. 105 °C.


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