Workers at tyre plants are exposed to dangerous toxins, notably more than 21 pollutants from volatile organic compounds (VOCs) and hazardous air pollutants (HAP), a cancer-causing chemical. Indoor air pollutants can make the workers sick. The United States Environmental Protection Agency (EPA) has identified rubbers tyre manufacturing facilities as major sources of hazardous indoor air pollutants emissions.
The manufacturing of rubber tyres involves six processing steps, namely mixing, milling, extrusion, calendering, curing, and grinding. In particular, particulate matter and fumes are emitted from the dry chemicals utilized in mixing and curing stages. These affect the workers via skin or inhalation. Employees are recommended to have proper procedures including the use of engineering controls, protective clothing and work practices designed to limit or reduce the employee exposures to such hazardous air pollutants. However, these are not enough solutions to protect the workers’ health and safety from the indoor air pollutants.
According to the largest annual survey of Price Waterhouse Coopers (PWC) in the UK, an estimated 137.3 million working days were lost due to sickness or injury in the UK in 2016. The presence of unwell employees can negatively impact many areas including productivity, safety at work, errors in judgement, and relationships between colleagues. Employees are the biggest asset. Managing employees efficiently is the key to success.
Areca has developed a compact all-in-one indoor VOCs control system for the rubber tyre industry on the basis of the company’s VOCs treatment technology accumulated for 20 years. On top of that, the system is applicable in various industries requiring the removal of VOCs and odours such as petrochemical, shipbuilding, automotive, rubber, OLED, LCD, semiconductors, printing and coating. Areca V improves indoor air quality by removing hazardous substances such as gases, mist, fumes, and deadly dusts to the employees at workplace. It includes all functions of concentration, high-efficiency combustion and energy recovery and achieve over 90% treatment efficiency of VOCs and the hazardous air pollutants.
How the system works
The system consists of 4 parts-filter, zeolite concentrator, fans and Areca V hybrid oxidation system. The air pollutants from the workplace enter through the ventilator and passes through the filter into the equipment and eventually to the zeolite concentrator. The VOCs are adsorbed onto the zeolite, and only the clean air is discharged. Harmful substances in the adsorbed VOCs are oxidized by the hybrid combustion system, and the waste heat is recovered and recycled in the system before the purified air is exhausted. The filter is to protect the system from dust and particulate matter occurred at the workplace.
The zeolite concentrator is designed to concentrate VOCs gas flowing into the system, and makes the gas adsorb and desorb continuously by rotation. The process fan is a device that discharges treated gas through the Areca V system. The Areca V hybrid oxidation system oxidizes concentrated VOCs gas and recovers energy through waste heat recovery. The system’s compact design takes up minimal space and it is easy to install and maintain.
The main features
Areca V has six main features.
First, the system is convenient for movement, installation and maintenance due to the all-in-one structure. Because it requires small installation area compared to other facilities, the workplace can be used efficiently by archiving sufficient free space available. The required areas are different depending on its capacity (200 CMM/500 CMM). In case of the capacity of 200 CMM, the system is applicable over areas of 400-800?. It has a height of 1,800 mm and a width of 2,000 mm. The length differs according to what type (pocket/plate) is selected. The length is 5,900 mm for the pocket type and 5,000 mm for the plate type. In case of the capacity of 500 CMM, the unit can be applied over areas of 1,000-2,000?. It measures 2,500 mm in height and is 2,500 mm in width. Like the latter, it also differs in accordance with the type (pocket/plate). The length is 7,400 mm for the pocket type and 6,500 mm for the plate type. The user can easily operate by an on/off button.
Third, the system can be fully operational within 20 minutes and it is convenient to operate the system because other utilities such as LNG, LPG, compression air etc. are unnecessary. It can be operated by electrical energy. The electricity differs depending on the unit’s capacity (200 CMM/500 CMM). In case of the capacity of 200 CMM, it requires 18 kWh for normal operation and needs 60 kWh when it starts up. On the other hands, the unit having the capacity of 500 CMM requires 33 kWh for normal operation and 135 kWh for starts up.
Fourth, it improves the employees’ safety through the application of an automatic fire extinguishing system. When the fire breaks out, the fire extinguishing system recognizes immediately and it automatically operates.
Fifth, the system configuration with various options and the optimized real-time system according to various operation conditions allows application for various businesses. Lastly, it can be installed not only outdoor and but also indoor.