Carbon Recycle Environment provides a set of "150Nm3/h dichloromethane tail gas recovery and treatment device" for this project based on the properties of volatile gases at the user's site.

       The dichloromethane tail gas recovery and treatment device adopts a combination process of "compression condensation+gas separation membrane+resin adsorption". After this process, organic gases in the volatile gas are largely recovered; Meanwhile, after resin adsorption, the organic gas outlet concentration reaches ≤ 20mg/m3.

       The oil-free single screw compressor of the compression unit adopts advanced WX-II type line, and the volumetric efficiency (Max) of the head is ≥ 95%. The metal components such as the shell, rotor, bearing seat, cover plate, and fastening bolts that come into contact with the medium are all made of 316L stainless steel material. The screw and star wheel are processed using SINUMERIK CNC machining software, manufactured by a five axis linkage machining center, and the shell is processed by a horizontal machining center. Use a coordinate measuring instrument for form and position tolerance detection to ensure machining accuracy. The contour of the screw surface is ± 0.01mm, the roughness is less than Ra0.4, and the imbalance of the screw and star wheel is better than G1 grade. The meshing pair of the compressor has high machining accuracy, low wear, low vibration, and low noise.

       The resin adsorption system adopts a three tower mode and uses high-quality and efficient resins with large desorption capacity, good selective adsorption, and easy desorption. It has a good mesh structure and a high specific surface area, which can selectively adsorb organic molecules through pore size screening, intermolecular forces, or hydrogen bonding. It is applied for the adsorption and recovery of volatile organic compounds (VOCs) at medium and low concentrations, achieving standard emissions.

       VOCs waste gas recovery and treatment devices have been widely used in industries such as pharmaceuticals, fine chemicals, petrochemicals, new energy, and new materials, greatly reducing the load and operating costs of end of pipe incineration systems in enterprises. The source recovery and resource utilization of organic waste gas have been achieved, reducing product energy consumption and operating costs, and meeting high emission standards and requirements.