The organic VOCs tail gas generated throughout the fine chemical production process mostly comes from reaction synthesis, distillation purification, vacuum desolvation, material displacement, tank respiration and other processes, including flammable and explosive mixed organic solvents such as ethyl acetate, dichloromethane, acetone, tetrahydrofuran, methanol, isopropanol, etc. Exhaust gas hasIntermittent pulse exhaust, large concentration fluctuations, entrainment of mist droplets and aerosols, and halogenated corrosive componentsAs a whole, it belongs to high-risk and explosive working conditions, with strict standards for equipment explosion-proof level, safety interlock, corrosion resistance, and stable recovery ability under different working conditions. It is a core essential equipment for chemical enterprises to ensure safe and stable production, meet environmental standards, and reduce solvent consumption.
TraditionWaste gas treatment equipmentUnable to adapt to high-risk explosion-proof scenarios in fine chemical industry, there are obvious safety and efficiency shortcomings. The incineration process completely destroys recyclable solvents, resulting in severe resource loss. The combustion of halogenated solvents produces corrosive and toxic by-products, and equipment investment and operational energy consumption remain high;activated charcoalAdsorption is only for the transfer of pollutants and has no resource utilization benefits. Droplets can easily cause carbon layer blockage, and high concentration impact conditions can easily lead to heat accumulation and fire hazards. Consumables are replaced frequently, hazardous waste production is large, and operation and maintenance costs are high; Single condensing equipment is limited by steam partial pressure, resulting in a significant decrease in recovery rate under low concentration conditions. It cannot adapt to fluctuating exhaust conditions, has poor emission stability, and has a simple explosion-proof configuration, making it difficult to meet the safety standards of Class A workshops in fine chemical industry.
LuoyangWohong PetrochemicalExplosion proof organic tail gas liquefaction and recovery equipmentAdopting a fully physical process of compression condensation membrane coupling, there is no combustion, chemical reaction, or secondary pollution throughout the entire process. It is specially customized and developed for high-risk explosion-proof conditions in fine chemical industry, taking into account bothSafety and explosion prevention, stable management, solvent reuse, energy conservation and cost reductionThe four core requirements.
The equipment adopts a closed negative pressure gas collection method to collect organic exhaust gas, and is equipped with a buffering and stabilizing module to effectively smooth out the gas volume and concentration pulse fluctuations caused by production batch switching and instantaneous exhaust, and stabilize the system's intake conditions. The exhaust gas first enters a multi-stage pretreatment unit to remove solvent droplets, aerosol impurities, and free water layer by layer, preventing liquid-phase impurities and corrosive media from entering core precision components such as compressors, heat exchangers, and membrane components, preventing equipment scaling, blockage, and corrosion damage, and ensuring long-term safe and stable operation of the equipment from the source.
Pre treated exhaust gas that meets the standard is compressed and pressurized to increase the organic vapor partial pressure and optimize the solvent liquefaction phase transition conditions. Then, through a multi-stage gradient cryogenic condensation system, the temperature is gradually reduced according to the boiling point differences of different solvent components. Most of the mixed organic solvents are efficiently liquefied and precipitated, completing the initial resource recovery. In response to the low concentration organic exhaust gas remaining after condensation, a polymer membrane separation unit is equipped to enrich organic components through molecular permeation differences, ensuring compliant exhaust emissions. The high concentration organic enrichment gas flow is closed-loop and refluxed to the front end of the equipment for secondary treatment, significantly improving the comprehensive recovery rate of multi-component solvents.
After water separation, precision filtration, and impurity purification treatment, the quality of the recovered liquid solvent meets the production process standards. It can be directly refluxed to the production line for recycling, effectively reducing the cost of solvent procurement, reducing VOCs emissions and hazardous waste disposal, and achieving a two-way gain of environmental protection and production consumption reduction.
The whole machine is designed in strict accordance with the Class A explosion-proof standards for fine chemicals, and all electrical, motor, sensor, and electronic control components in the entire series are equipped with explosion-proof configurations to eliminate electrical spark safety hazards; Pipelines, valves, and heat exchange components that come into contact with organic media are made of anti-corrosion materials to resist long-term corrosion from halogenated acidic media. The system is equipped with a fully automatic interlock protection mechanism for overheating, overpressure, and combustible gas detection, as well as an emergency vent bypass, which can quickly respond to instantaneous concentration shocks and abnormal working conditions, comprehensively avoid the risk of combustion and explosion, and adapt to high-risk explosion-proof production environments in workshops.
The equipment adopts an integrated pry and install structure, and the factory completes the whole machine assembly, explosion-proof verification, and pressure testing before leaving the factory. It occupies a compact area, is easy to install, has a short construction period, does not require large-scale civil engineering, can be connected to new and old production line pipelines, supports non-stop technological upgrades, and minimizes interference with normal production. Paired with an intelligent frequency conversion self-control system, it can adaptively adjust the operating load based on real-time fluctuations in exhaust gas volume and concentration, avoid no-load energy consumption, adapt to fine chemical intermittent production conditions, and support long-term unmanned safe and stable operation.
As a professional manufacturer of explosion-proof solvent recovery equipment, Luoyang Wohong Petrochemical can customize and match exclusive process solutions based on customers' on-site explosion-proof level, exhaust gas composition, air flow conditions, and site space, reserve sufficient operating margin, provide one-stop full process services including working condition survey, scheme design, equipment intelligent manufacturing, installation and commissioning, and operation and maintenance training, and provide VOCs exhaust gas recovery and treatment solutions for fine chemical enterprises that are safe, compliant, efficient, cost-effective, and resource based for revenue generation.
Mr. Li 13526990215
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