Manufacturers of compressed wood pellets produced from sustainably managed working forests presently export more than 7,256,000 metric tons per year. Renewable energy sources like wood pellets allow electric utilities to reduce their dependence on coal and lower their carbon emissions while providing safe, green, reliable, affordable power.
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More than 60% (4,454,000 metric tons/yr.) of U.S. wood pellets are produced at plants that are equipped with NESTEC Inc. emission control systems. NESTEC has engineered the smallest carbon footprint and operating costs in the industry. Many of the units are operating in a self-sustaining mode with nil fuel consumption. The hydrocarbons released during the wood processing sustain the operation of the emission control units.
NESTEC offers a complete review and analysis of the air emission control and energy conservation needs for each facility along with suggested options to achieve the desired results based on multiple conditions/requirements.
Primary plant facility project objective:
- Safety (see: Safety First | Nestec, Inc.)
- Compliance with emissions regulations
- Controlling capital installation and operating costs
- Maximizing uptime reliability
- Lower maintenance requirements
- Emissions from multiple sources (which are often spread out over a wide area)
- Emissions from batch operations (each of which vents pollutant-laden emissions in unpredictable concentrations whenever the process is initiated or terminated)
- Unpredictable fugitive emissions
- Centralization of the control system (disparate airborne sources are often collected and concentrated)
- Creating as few streams as possible with the lowest overall exhaust air volume requiring treatment
- Presence of multi component emissions and the nature and concentrations of hydrocarbons present
- Operating characteristics of the emitting process
- Method of emissions collection
- Number and magnitude of the different sources
- Either recover or destroy organic pollutants
- Reuse of the hydrocarbon components
- Recovered hydrocarbons are eventually burned to offset fuel consumption at the facility
NESTEC Equipment Design Features
- Direct Fired Thermal Oxidizer (DFTO) (see: Thermal Oxidation Modular Systems | Nestec, Inc.)
- RTO/RCO Uniform air flow throughout the entire RTO unit is essential to maximize performance
- Uniform Air Flow reduced NOx (see: Thermal Oxidizer NOx Emissions | Nestec, Inc.)
- Single Actuator, center horizontal shaft poppet valve design, located in the center beneath the heat recovery chambers, promotes uniform air distribution into and out of the heat recovery chambers with a single valve disk, actuator, and dual seat per chamber
- Multi-Combustion Chamber (MCC) design
- Even tower (chamber) design
- 95- 96% Thermal Energy Recovery (TER)
- Up to 99% Destruction Removal Efficiency (DRE)
- Multiple Heat exchange media layers designed specific for the application
- Forced draft fan design
- Regenerative Catalytic Oxidizer (RCO)
- Unique online bake out and catalyst regeneration system
- Multiple burner control – uniform temperature profile
- Thermal Alignment Feature with reduced fuel consumption
- Retention Time at purification temperature (see: The Three T’s of Oxidation | Nestec, Inc.)
- Easy access for maintenance and inspections
- If the Flow Control Calves do not work, the entire unit does not work. A simple, rugged, and reliable valve design will maximize performance and insure maximum up time
Single fast acting actuator per chamber
Shaft spring shock absorption
Thermal expansion compensation
Disc leaf spring design helps absorb seat closure
Open and close valve position switches
No leak housing shaft seal
Zero or nil seat leakage
Self-cleaning seats
Heated disk
Large, easy opening valve access door
NESTEC’s RTO / RCO design has optimized the benefits of the heat recovery media, simplified the flow control, and compact the configuration into a smaller prepackaged unit, greatly improving on the original design. Four decades plus (over 365 combined years) of NESTEC’s key experience staff have resulted in RTO / RCOs designs that offer:
- Smaller, more compact units for a lower capital investment
- 30-50% reduction in energy consumption
- Increased destruction efficiency
- Shop-assembled modules or skid mounted units with a shorter field-installation time
- Increased reliability and uptime
- Lower maintenance requirements
NESTEC Inc. has helped successful companies increase their air emission control operating efficiencies and reduce both capital and/or operating costs. We are confident that we can help your facility as well with any present or future air emission control issues that could or are eroding your bottom line.
NESTEC, Inc. | Smart Solutions for Clean Air
For assistance from our extensive experience, call or e-mail NESTEC Inc. (Office: 610-323-7670) for a free evaluation of your VOC/HAP and/or particulate control equipment and service needs.
Nestec, Inc. | Smart Solutions for Clean Air
jnester@NESTECinc.com
rpennington@NESTECinc.com
wholden@NESTECinc.com 610-323-7670 ext. 103 (service)
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