In 2026, the environmental protection supervision of the pharmaceutical industry continued to tighten, API, pharmaceutical intermediates, CDMO enterprises in the procurement of environmental protection equipment, no longer only focus on exhaust standards, more attention to equipment working conditions adaptation, operating costs and organic solvent recovery brought about by the actual economic benefits. Pharmaceutical production is mostly batch operation. VOCs waste gas discharged from reaction kettle, vacuum drying, rectification and vacuum pump has complex components, including dichloromethane, acetone, ethyl acetate, butanone, ethanol and other high-value solvents. The air volume concentration fluctuates greatly, and halogenated hydrocarbon medium has corrosion risk. The workshop belongs to Class A explosion-proof area. When purchasing organic solvent recovery equipment, if only the initial quotation is compared and process matching, explosion-proof configuration and manufacturer's project experience are ignored, problems such as insufficient recovery rate, corrosion and damage of core components, back pressure interference with negative production pressure, high operation and maintenance costs will easily occur in the later period, bringing additional losses to the enterprise.
The mainstream VOCs treatment process on the market has its own advantages and disadvantages, and enterprises need to combine their own needs when purchasing.RTOIncineration equipment can achieve the exhaust gas standard, but the direct destruction of valuable solvents, the treatment of halogenated hydrocarbon exhaust gas will produce corrosive by-products, equipment investment and fuel costs are large, there is a fire safety hazard, no solvent recovery income.activated charcoalThe initial investment of adsorption equipment is low, the face of pharmaceutical intermittent fluctuations in the exhaust gas is easy to quickly saturated, the need for frequent replacement of filter material, resulting in a large number of hazardous waste, hazardous waste disposal costs are rising year by year, can not achieve solvent liquefaction recovery. In order to improve the recovery efficiency of pure condensing equipment, deep refrigeration is required, the energy consumption of the whole machine is high, and the exhaust gas is easy to exceed the standard in case of concentration impact. Many accessories assembly manufacturers outsource condensers, common membrane modules and electric control components for simple assembly, lack of material balance capacity under pharmaceutical working conditions, common membranes will quickly swell and fail when contacted with dichloromethane, and unreasonable back pressure design will damage the negative pressure of reaction kettle and vacuum pump and interfere with normal production.
Compression-condensation-membrane coupling belongs to the whole physical recovery process, no open flame, is the current pharmaceutical industry organic solvent recovery of the preferred technical route. The exhaust gas first enters the buffer voltage stabilizing unit to stabilize the impact of air volume concentration, and is subjected to defoaming filtration, pre-cooling dehydration pretreatment to remove drug mist, impurities and water vapor, and protect the condenser and membrane components. Exhaust gas is compressed and pressurized to increase the partial pressure of solvent vapor, and most organic solvents are directly liquefied and recovered in multi-stage gradient condensation unit. The uncondensed residual tail gas is sent to the special membrane module for halogenated hydrocarbon for enrichment and separation. The concentrated high-concentration organic gas is recirculated to the front end of the equipment for circulation treatment. The recovered liquid solvent is sent back to the production workshop for reuse after phase separation treatment, taking into account environmental protection compliance and solvent circulation benefits.
In 2026, pharmaceutical companies purchase organic solvent recovery equipment, you can refer to the following core procurement points. Manufacturers should have the ability of on-site survey and material balance calculation. According to the actual air volume on site, solvent component ratio, water content and intermittent production cycle, they should calculate the solvent recovery, energy consumption of the whole machine and return on investment cycle, and refuse to directly apply standard models. Exhaust gas contains dichloromethane and other halogenated hydrocarbon components, must be equipped with halogenated hydrocarbon-resistant special membrane components to avoid swelling failure of membrane elements. Strictly control the system back pressure, can not raise the pipeline pressure, to ensure that the reactor, vacuum pump negative pressure production is not affected. The explosion-proof grade of the whole machine matches the requirements of Class A workshop, and is equipped with a full set of safety interlocks for combustible gas, overtemperature and overpressure. Buffering, demisting, filtration, pre-cooling dehydration, and other pretreatment units are indispensable and help extend the service life of core components. Priority should be given to self-owned production workshops, source factories with real landing cases in the pharmaceutical industry, avoiding middlemen assembling, and ensuring the timeliness of spare parts supply and failure response speed.
LuoyangWohong PetrochemicalEquipment Co., Ltd. is the source manufacturer of complete sets of organic solvent recovery equipment in the pharmaceutical industry. It has its own standardized production workshop, refuses to assemble simple accessories, and deeply cultivates pharmaceutical intermittent and changeable exhaust gas conditions. Skid-mounted compression condensation-membrane coupling recovery unit for halogenated hydrocarbon corrosion, concentration impact load, system back pressure control to do special optimization, the whole explosion-proof grade ExdⅡ CT4, complete safety interlock protection. PLC frequency conversion fully automatic operation, can follow the exhaust load automatically adjust the power, adapt to batch intermittent production mode, multi-component mixed exhaust gas comprehensive recovery rate of 95-98%. Equipment skid-mounted integrated factory, the factory completed assembly, welding, pressure test, the whole machine linkage test, arrived at the project site only need to connect the air pipe and power supply can be put into production, almost no waste activated carbon waste, effectively reduce the long-term operation and maintenance expenses of enterprises.
The equipment is suitable for bulk drugs, pharmaceutical intermediates, CDMO and fine chemical enterprises, and can handle various organic waste gases such as dichloromethane, acetone, ethyl acetate, butanone, ethanol, n-hexane, etc., covering waste gas sources such as reaction kettle tail gas, vacuum drying tail gas, rectification non-condensable gas, vacuum pump exhaust, storage tank breathing gas, etc.
It can provide on-site working condition survey, waste gas working condition analysis, material balance calculation, return on investment calculation, customized process plan, complete machine manufacturing, factory complete machine testing, on-site installation guidance and debugging, operator training, complete machine quality assurance, remote operation and maintenance, and spare parts supply chain services. It has many sets of solvent recovery projects in the pharmaceutical industry, helping enterprises to achieve exhaust gas emission standards and complete organic solvent resource recycling.
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