Compare Zeolite
We want you to compare zeolite based air purification systems with other solutions!
Our customers lower their air purification costs. The high level of safety and availability are included at no extra cost.
We rest well assured that Zeolite often is the stronger alternative. So, please feel free to click through the most common technologies and learn why Zeolite is an strong option.
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ACTIVATED CARBON
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RTO/RCO (Regenerativ Thermal Oxidizer)
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WATER SCRUBBER
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Zeolit vs Activated Carbon
How it works?
Both zeolite and activated carbon systems use a two-stage technique. Volatile organic compounds (VOCs) are “caught” (adsorbed) in a filter – fixed beds or rotors. These are heated to the point where the VOCs are released from the filter in a higher concentration, after which they are incinerated or recycled.
Zeolite is safer
Unlike activated carbon, zeolite is not combustible. The risk of fire with activated carbon is a strong reason to choose zeolite instead.
The lower temperature resistance of carbon makes it less compatible with hydrocarbons with high boiling points. Plastic smoke and fumes from vulcanization processes require high temperatures to be completely regenerated.
Increased lifespan
Zeolite is a crystalline structure, as opposed to carbon, which is amorphous. This makes it is easier for the zeolite to completely regenerate.
Industrial solvents often contain small amounts of volatile substances that require higher temperatures to completely regenerate. Because activated carbon cannot withstand temperatures in that range, these substances often remain and block the carbon. As a result, the carbon needs to be replaced within 1–2 years. In addition to the cost of carbon and exchange and residual product management, it also entails ongoing downtime in production.
Zeolite can always be completely regenerated due to its resistance to high temperatures, which gives it a very long service life (25+ years).
Higher capacity at lower concentrations
Zeolite has a larger adsorption capacity at lower concentrations compared to activated carbon. As a result, less adsorbent is needed when using zeolite purification. This leads to lower operating costs since less energy is required for fans and heating.
Does not absorb water
In production involving high levels of humidity, activated carbon can have a large water uptake. Boiling water during the regeneration process is a costly endeavor. It also lowers the carbon’s performance.
Zeolite is basically hydrophobic and absorbs less water at the equivalent level of humidity.
Installation and operating costs
Zeolite has a higher purchase price than carbon. However, our customers choose to accept this additional cost as it reduces the risk of fire and because activated carbon requires costly and frequent replacements – which in turn results in higher operating costs. Because a zeolite system lasts for at least 25 years, it is considered a wise long-term investment.
Completely regenerated
Unlike carbon, zeolite can be completely regenerated, which results in a constant high degree of purification.
Our industrial air purification systems
Read more about our different types of zeolite based air purifications systems
You val also contact us to book a mapping of your emissions or just to learn more.
Zeolitrotorsystem vs RTO/RCO
How it works?
The VOCs are adsorbed and concentrated continuously in the rotor and then incinerated catalytically.
When using an RTO/RCO solution, all the processed air must pass through incineration, which often means that a significant amount of energy in the form of gas or electricity must be added– resulting in very high operating costs.
Significantly lower operating costs
The main difference between a zeolite rotor system and RTO/RCO is that the polluted air is concentrated upwards in a zeolite rotor system, which reduces the cost of the actual incineration.
When using an RTO/RCO solution, all the processed air must pass through an incineration section, which often means that a significant amount of energy must be added using gas or electricity – which results in very high operating costs.
Adaptive function
The operating cost of an RTO/RCO solution becomes particularly high when purifying large airflows with varying or low VOC concentrations – like those occurring in the exhaust air from e.g. printing presses and painting processes.
Zeotech´s rotor system is adaptive, i.e. the system adapts to the amount of VOCs entering the system to ensure the smallest energy consumption possible at low load.
Handles great variation
Zeotech´s rotor system is very flexible and can handle both large and small airflows as well as varying concentrations of VOCs while retraining operating economy.
An RTO/RCO solution is better suited to stable conditions. If the concentration is too high, this may result in downtime due to excessive temperature. If the concentration is too low however, operating cost goes up.
Higher availability
Additionally, it can take days to cool down or warm up an RTO system following downtime, while it only takes about 20 minutes to start Zeotech’s system. It can therefore be turned off during short production breaks, such as when switching orders, single shift production and weekends, thereby saving energy.
Reuse the heat
With Zeotech’s system, the high temperatures from incineration can be used directly to heat the facilities and the actual production process – e.g. in dryers for printing presses.
Diffuse emissions
In printing processes, it is common to have large diffuse emissions because it is difficult to encapsulate the printing press.
The zeolite rotor’s ability to economically handle a larger exhaust airflow allows you to “catch” more VOCs in and around the printing press, which lowers the amount of diffuse emissions.
Investment costs
Installing Zeotech´s zeolite rotor system usually entails a higher initial cost than for an RTO/RCO. However, our customers recoup that cost in 2–3 years thanks to the significantly lower operating cost. Given the system’s life span of at least 25 years, it is a worthwhile investment.
Our industrial air purification systems
Read more about our different types of zeolite based air purifications systems
You val also contact us to book a mapping of your emissions or just to learn more.
Zeolit vs Water Scrubber
How it works?
When using zeolite, the VOC is caught in a bed of zeolite or a rotor and then heated to the point where it is released from the zeolite. The VOC is then in a concentrated form which can be efficiently incinerated. A water scrubber uses vast quantities of water to purify the air – it creates large waste water which also needs to be handled.
Requires massive amounts of water
In order to achieve an acceptable purification rate with a water scrubber, huge amounts of water are required. This is not only costly but also unsustainable from an environmental perspective.
Purification rate
Water scrubbers generally offer a lower purification rate. It is also limited by the VOCs used during production.
Additional labor
The waste water from a water scrubber is contaminated by VOCs and must either be destroyed or taken care of in some manner as it may not be flushed down the drain. This adds steps to the process, which is cumbersome, costly, and not particularly good for the environment.
Heat and energy
The up-concentration taking place in the zeolite rotor system generates high temperatures from the incineration, which in turn can be used to heat facilities and in the production process itself – such as in dryers for printing presses.
Investment costs
Installing Zeotech´s zeolite system usually entails a larger initial cost than a system using a water scrubber. However, the cost of the water and processing of contaminated water can be significant.
Many of our customers also recycle the surplus heat from the zeolite regeneration, which lowers operating costs. This means that the system can pay for itself within a few years, and given that the systems has a life expectancy of at least 25 years, it becomes a wise long-term investment.
Our industrial air purification systems
Read more about our different types of zeolite based air purifications systems
You can also contact us to book a mapping of your emissions or just to learn more.