What is VOCs and where does it come from?
Volatile organic compounds (VOCs) are organic chemicals that have a high vapor pressure at ordinary room temperature. Their high vapor pressure results from a low boiling point, which causes large numbers of molecules to evaporate or sublimate from the liquid or solid form of the compound and enter the surrounding air, a trait known as volatility. For example, formaldehyde, which evaporates from paint and releases from materials like resin, has a boiling point of only -19 °C (-2 °F).
VOCs are numerous, varied, and ubiquitous. They include both human-made and naturally occurring chemical compounds. Most scents or odors are of VOCs. Some VOCs are dangerous to human health or cause harm to the environment. Anthropogenic VOCs are regulated by law, especially indoors, where concentrations are the highest. Harmful VOCs typically are not acutely toxic, but have compounding long-term health effects.
VOCs emissions and hazards
1. PM2.5 hazard
2. O3 hazard
3. Direct harm to the human body
Vocs Integrated Treatment Equipment for Industrial Waste Gas
This adsorption concentration equipment is a new generation of VOCs treatment equipment, which organically combines the adsorption concentration unit with thermal oxidation unit, mainly applicable to organic wastes of large air volume and low concentration, which can be converted into the ones of small air volume and high concentration after purification by adsorption and desorption. Then to have thermal oxidation treatment, and the heat emitted by the combustion of organic matter is utilized effectively.
Process Principle
The sealing system of Zeolite molecular sieve adsorption concentration runner is divided into two parts, treatment and regeneration, and the slow rotation of the runner contribute to the complete and continuous adsorption process. When the waste gas passes through the treatment zone, the waste gas components are adsorbed by the adsorbent in the runners, then the waste gas is cleaned and emptied, and runners gradually become adsorption saturation. Meanwhile, in the regenration zones, when hot air passes through the adsorption saturated runners, waste gas adsorbed is desorpted and carried off by the hot air, thus the adsorption capacity of the runners is restored; then the high temperature gas desorbed enters the RTO/CO oxidation equipment for oxidation treatment.
Technical Advantages
1. Applicable to continuous operation conditions, the rotary structure contributes to stable rotating speed and consisitant adsorption desorption wind speed, which can guarantee continuous operation with stable desorption concentration and high purification efficiency without bias phenomenon;
2. High security: absorbent material is non-combustible, eliminating fire hazards;
3. High treatment efficiency: purification efficiency reaches up to 95%, meeting environmental standards;
4. Stable operation: adsorption, desorption is stable and continuous, and desorption temperature reaches up to 200°C;
5. Low maintenance costs: adsorbent material enjoys a long life; no control valve involved;
6. Low investment: concentration of more than 15·fold, reducing post treatment equipment requirements;
7. Combination of a variety of processes, high residual heat utilization rate: it can achieve high heat recovery ≥95% when combined with RTO; and heat recovery when combined with CO.
Core Material
The non combustible inorganic silicate is used as adsorbent material, eliminating fire hazards;
We prefer absorbent material enjoys a long life; strong structural strength and perfect water resistance; rich micropore, even pore passage and high adsorption efficiency.
Applicable Fileds
1. Applicable to the coating material, painting, printing, electronics, battery and separator industries.
2. Applicable to both conventional organic matters and easily oxidizable ones, such as ketome and liquid groups.
3. It can achieve good treatment effect in various situations, including large painting workshop, furniture factory, chips, LCD, LED.
4. Molecular sieve runner is particularly applicable to the VOCs of large air volume and low concentration, and convert them into the ones of low air volume and high concentration.
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