Developing Environment-Friendly Products

VOC Recovery System

Our volatile organic compound (VOC) recovery system uses liquid nitrogen as a refrigerant and indirect heat exchange for cooling to condense and recover dry simple VOCs from gaseous streams. The heat exchange process vaporizes the liquid nitrogen into nitrogen gas, which—because purity is not affected—can then be reused for other purposes. Also, because there is no need to compress the VOCs, a compressor is not required, making it possible to accommodate specifications for the prevention of explosions.

By using indirect heat exchange, we succeeded in developing a VOC recovery system that can condense and recover VOCs without freezing, facilitating a continuous recovery rate of over 90% at a temperature as low as –90ÂșC (flow rate: 40 Nm3/hr; maximum VOC concentration: 2.0 vol%). This system is thus particularly suited to applications involving gaseous streams with high concentrations of VOCs and low flow rates, including synthesizing and washing processes in the pharmaceuticals and chemicals industries.

VOC recovery system

VOC recovery system

Energy-Efficient Ultralarge-Scale Air Separation Unit

Our most advanced ultralarge-scale air separation unit* offers distinct advantages over its predecessors in terms of energy efficiency, reducing energy consumption per unit of gas produced by approximately 15%. This accomplishment reflects three key improvements:

  • Increase in operating efficiency, achieved by boosting the size of the unit as a whole and of the air compressor,
  • Reduction in air compressor power requirements attributed to the use of a low pressure-loss packed column, and
  • Reduction in air compressor power requirements attributed to the use of a downflow condenser reboiler.

* An air separation unit takes in atmospheric air and produces gases, notably oxygen and nitrogen, through liquefaction and separation.

Ultralarge-scale air separation unit

Ultralarge-scale air separation unit

Ultralow NOx Oxygen-Enriched Combustion System

In 2011, we commenced sales of Innova-Jet, a newly developed ultralow NOx oxygen-enriched combustion system that employs an innovative forced oscillation combustion method. With Innova-Jet, the production of NOx emissions is reduced to approximately 1/20 that of a conventional oxygen-enriched combustion burner. Moreover, because the forced oscillation combustion method churns gas in the furnace, it can improve intermediate efficiency, thus helping to reduce the amount of energy used and to minimize CO2 emissions.

 

Exterior of Innova-Jet oxygen-enriched combustion system

Exterior of Innova-Jet oxygen-enriched combustion system