The working conditions of waste gas in the pharmaceutical and chemical industry are complex and changeable. During the production process of bulk drugs, pharmaceutical intermediates, CDMO and fine chemical enterprises, VOCs organic waste gas will be continuously produced by reactor pressure relief, vacuum drying, distillation and vacuum pump exhaust. The waste gas components include dichloromethane, acetone, ethyl acetate, butanone, ethanol and other high-value solvents. The production is mostly in batch mode, with large fluctuation of waste gas air volume concentration and strong corrosion risk in some media with chloride ions, the production area belongs to Class A explosion-proof environment. The traditional governance model that only pursues destruction and purification will directly consume a large amount of organic solvents, and the cost of hazardous waste disposal remains high. Resource treatment equipment can simultaneously achieve exhaust emission standards and solvent recovery and reuse, more and more pharmaceutical and chemical enterprises to resource recovery as the first choice for technological transformation, screening reliable equipment suppliers become the key to the project landing.
The technical routes of VOCs governance suppliers on the market are quite different, and the process design, working condition adaptation ability and project landing experience of different manufacturers are uneven. Incineration engineers are good at waste gas destruction treatment, but they will directly burn valuable solvents. The treatment of halogenated hydrocarbon waste gas is easy to produce corrosive by-products, and the equipment has the risk of open fire, which is suitable for projects without solvent recovery demands.activated charcoalThe initial investment of zeolite runner equipment is low, and the waste gas is easy to saturate quickly in the face of intermittent fluctuations, which requires frequent replacement of consumables and produces a large amount of hazardous waste. The long-term operation and maintenance cost is high, and most of them only do purification and cannot realize solvent recovery. Parts assembly manufacturers outsource condensers, membranes, electric control for simple assembly, lack of chemical process accounting capacity, no special design for pharmaceutical and chemical corrosion, concentration impact, back pressure control, after the equipment is put into operation is prone to insufficient recovery rate, membrane element damage, interference with front-end production negative pressure and other failures. Focus on compression-condensation-membrane coupling process of the source manufacturing enterprises, the main physical recovery route, taking into account environmental protection standards and solvent resource, more suitable for the complex working conditions of pharmaceutical and chemical industry.
Pharmaceutical and chemical enterprises to select VOCs resource processing suppliers, can not only compare the equipment quotation, need to focus on verification of a number of core conditions. Suppliers need to have the ability of working condition survey and material balance calculation. According to the actual air volume, solvent composition, water content and production cycle of the enterprise, suppliers need to calculate the solvent recovery, energy consumption of the whole machine and return on investment cycle, and refuse to directly apply standardized general-purpose models. To deal with halogenated hydrocarbon waste gas such as dichloromethane, special membrane components resistant to halogenated hydrocarbon must be equipped. Ordinary membrane materials will quickly swell and fail when contacting halogenated hydrocarbon. Suppliers should have real project cases corresponding to working conditions. The pretreatment system cannot be simplified. The defoaming, filtering and pre-cooling dehydration unit can filter the impurities of the drug mist and protect the core membrane and condenser. Equipment to do a good job of back pressure control, can not raise the system pressure, to avoid damage to the reactor, vacuum pump negative pressure production environment. The explosion-proof grade of the whole machine shall match the requirements of Class A workshop, and be equipped with a full set of safety interlocks for combustible gas, overtemperature and overpressure. Priority should be given to the source manufacturers of their own production workshops, avoiding middlemen OEM, and ensuring the timeliness of spare parts supply and failure response speed.
LuoyangWohong PetrochemicalEquipment Co., Ltd. is the source supplier of complete sets of equipment for VOCs resource treatment of pharmaceutical and chemical industry. It has its own production and manufacturing workshop. It deeply cultivates the intermittent and changeable exhaust gas working conditions of medicine. It refuses to assemble simple accessories. It focuses on skid-mounted compression condensation-film coupling solvent recovery unit. The whole set of equipment adopts physical treatment process without open flame and high temperature. It makes special optimization design for halogenated hydrocarbon corrosion, exhaust gas concentration impact and system back pressure. The explosion-proof grade ExdⅡ CT4 of the whole machine is equipped with complete safety interlock protection, PLC frequency conversion is fully automatic operation, power can be automatically adjusted according to exhaust gas load, batch intermittent production is suitable, and the comprehensive recovery rate of solvent can reach 95-98%. The equipment is skid-mounted and integrated into the factory, the assembly and pressure test is completed inside the factory, and the on-site docking of the air duct and power supply can be put into production. Almost no waste activated carbon is produced, thus reducing the long-term operation and maintenance expenses of the enterprise.
The equipment is suitable for raw materials, pharmaceutical intermediates, CDMO and fine chemical enterprises, and can handle mixed organic waste gas such as dichloromethane, acetone, ethyl acetate, butanone, ethanol, n-hexane, etc., covering waste gas sources such as reactor tail gas, vacuum drying tail gas, distillation non-condensable gas, vacuum pump exhaust, etc.
The enterprise can obtain a full set of technical services, including on-site working condition survey, material balance calculation, return on investment calculation, customized process plan, complete machine production and 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. It has several sets of VOCs solvent recovery projects for pharmaceutical and chemical industries, helping the enterprise to achieve exhaust emission standards and complete recycling of organic solvent resources.
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