Volatile organic compounds (VOCs) are organic compounds that evaporate at room temperature. There is a wide range of VOCs emission sources. VOCs can be emitted from most objects used in everyday life, such as natural products, food, household chemicals, furniture, pharmaceuticals, fuels, and building materials. VOCs are also among the most common air pollutants emitted by chemical, petrochemical and related industries. Most VOCs affect climate change, plant growth, and the health of humans and animals. Therefore, controlling VOC emissions is the main concern of each industry's commitment towards the environment. There are many methods for VOCs treatment or removal, such as membrane separation, adsorption, thermal oxidation, catalytic oxidation, and biological treatment. Among them, most VOCs can be removed or recovered by adsorption with low cost.
SEPLITE® CT10 Polymeric Adsorbent Resins
Amerigo Scientific provides SEPLITE® CT10, styrene-divinylbenzene macroporous resins for VOC treatment. Due to its large mesh pore structure, high surface area, designed pore size distribution, and surface aromaticity, SEPLITE® CT10 has excellent adsorption properties. It can be used for the adsorption and recovery of low and medium concentrations of alkanes, alkenes, aromatic hydrocarbons, lower alcohols, ketones, esters and other VOCs. With excellent physical, chemical and thermal stability, the resin has a long service life by steam regeneration.
| Product |
Properties |
|
SEPLITE® CT10 Adsorbent Resin
|
Particle size (mm): 0.6-1.2mm
Moisture content (%): 54-65
Bulk Density (g/l): 650-750
Whole beads count (%): ≥95
Specific Surface Area: 1000-1200 m²/g |
Advantages of Resin Adsorption
- Flexibility - Suitable for a variety of systems in different industries, from small equipment, skid-mounted equipment, to waste gas treatment systems
- Strength - Regular spherical particles with acid, alkali, and high temperature resistance, and good regeneration efficiency
- Purity - Free of metal impurities, preventing catalytic polymerization or combustion of unsaturated organics in pores
- Efficacy - Over 99.5% removal rate for non-polar and weakly polar VOCs, for emission compliance
- Security - Due to its good hydrophobicity, no need for dry adsorption, avoiding continuous heating produced by adsorption
Adsorption Resin vs. Activated Carbon
Compared with activated carbon, SEPLITE®CT10 has the advantages of higher adsorption rate, lower operating cost, longer service life, and cleaner production.
| |
Adsorption Resin |
Activated Carbon |
| Shape |
Regular spherical particles |
Columnar or irregular shape |
| Purity |
Synthetic; extremely low metal impurities |
Naturally formed; small amount of metal impurities |
| Security |
No hidden dangers, adsorption of reactive solvents without catalyzing decomposition;
No need for drying during operation, leading to heat reduction |
Metal impurities may lead to polymerization and cause intense heat generation;
Solvent degradation may lead to exotherm and subsequent bed fire in extreme cases;
Anhydrous operation is required because humidity affects the adsorption of VOCs by activated carbon |
| Strength |
Good mechanical strength, and acid, alkali, and high temperature resistance |
Impurities may be released |
| Life cycle |
Around 5 years (no need for overall replacement, annual replenish ≤ 10%) |
7-8 months, replaced waste being hazardous |
| Efficacy |
Pore structure can be adjusted during synthesis process, removal rate ≥
99% |
Removal rate ≥ 92% |
| Consumption |
Clear and transparent desorption solution;
Low regeneration consumption, around 150-200kg steam for 1m³ of resins. Steam/VOCs ratio about 2:1 |
Often with black toner impurities;
Steam/VOC ratio around 5:1 |
Applicable Industries
- Synthetic drugs, pharmaceutical intermediates
- Recovery and treatment of halogenated hydrocarbons, acetic acid, alcohols and esters
- Biological fermentation
- Treatment of ammonia, amine, thioether, thiol, fatty acid, ethyl acetate, butyl acetate, n-butanol
- Dyestuffs, dye intermediates
- Recovery of aromatics, chlorinated aromatics, phenols, anthraquinones
- Extraction industry
- Recovery of n-hexane, cyclohexane, methylcyclohexane, etc.
- Pesticides, active pharmaceutical ingredients
- Recovery and treatment of pyrethrins, pyridine, imidazole, acid chloride, biphenyl and heterocycles
- Hydrogen peroxide
- Treatment of heavy aromatics in oxidized exhaust gas
- Petrochemicals, surfactants and leather
- Adsorption and recovery of exhaust gas and high-carbon alcohol from the breathing valve in the tank area
- Chloride
- Treatment of vinylidene chloride, chlorobenzene, chloroethylene oxide, etc.
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