当前位置:产品展示 > 废气处理设备 VOC废气处理设备(centrotherm)

VOC废气处理设备(centrotherm)

作者:admin 发布日期:2015-08-26 21:25:24点击:987

 

CT-VOC Treatment
Volatile Organic
Compounds
For the photovoltaic, semiconductor and related industries
 
Overview
 
VOC is a collective name for volatile hydrocarbons, which are characterised through
high vapour pressures and low boiling points. The abbreviation VOC stands for
“Volatile Organic Compounds”.
 
There are two sources for VOC: either they have a natural origin from all forms of
life (humans, animals, plants, micro-organisms, etc.) or they have an anthropogenic
origin coming from solvents, cooling agents, road traffic, etc.
 
VOC endanger the human health and the environment, since they can cause fatigue, headache and sensitization. They can also be irritating to eyes, skin and mucous membranes or even carcinogenic. The threat for the environment is the formation of greenhouse gases and ground-level ozone in combination with NOx.
Therefore it is necessary that standards are established. The VOC-regulation by the
European Union says that the threshold value must not exceed 50 mgC/m3 or 0,5 kg/h.
 
The treatment of VOC in the photovoltaic-, semiconductor and related industries, is
an important topic since solvents, deposition gases and pastes are released in the
various processes.
 
The photovoltaic- industry should lead the way as a “green industry”. VOC treatment via thermal post-combustion
 
The thermal post-combustion (TPC) is a highly efficient solution for the total conver-sion of volatile organic
compounds (VOC) to water and carbon dioxide. The reaction takes place quantitatively at an air
temperature above 750 °C (1,382 °F).
 
The benefits of our TPC unit are less maintenances and reduced energy costs compared to similar
systems. Another big advantage is that the combustion process is very stable, almost independent of the waste gas composition and flow.
 
Due to the intelligent burner design (burner power correlating with waste gas load) and up to two heat exchangers, the primary energy consumption is as low as possible. The tubular heat exchanger uses the thermal power of the treated gas to preheat the incoming waste gas. The remaining thermal power of the treated gas can be used via plate heat exchanger to heat the supply air of a furnace, or to heat water in an additional heat exchanger

Features and benefits
 
• Very long MTBM (typically 1 year)
• Very low hydrocarbon emission (< 20 mg C/Nm3)
• High DRE (> 99,5 %) for all VOC
• Low primary-energy consumption (12 – 35 kW) due to energy recovery (hot air for drying furnace or hot water)

VOC treatment via condenser and E-filter
 
The reduction of VOC is often associated with a big energy consumption, high invest-ment and running
costs.
 
The redesign of our VOC abatement system for the PV-cell drying furnace is a low-cost solution, that features high VOC reduction (up to 90 %) and low energy consumption.
Our system condenses the VOC loaded waste gas and precipitates the very small drops in the downstream
E-Filter unit. If a greater efficiency is required (>90 %), the system can be upgraded with an active carbon unit.


Features and Benefits
 
• Very low energy cost (< 100 Watt/hour)
• Long MTBM (typically 6 months) for the condenser and electrostatic filter unit
• Condensate easy disposable at municipal waste incinerating plants