The technical renovation project of the old pharmaceutical and chemical workshop often faces practical difficulties such as tight site, limited civil engineering conditions, and tight construction period. At the same time, the composition of the waste gas is complex, with multiple components such as dichloromethane, acetone, ethyl acetate, butanone, ethanol, etc. coexisting in a mixture. The production is intermittent batch emissions, with large fluctuations in air volume concentration and corrosive halogenated hydrocarbon media. The workshop belongs to Class A explosion-proof environment. The pry mounted solvent liquefaction and recovery equipment integrates the entire process unit into a single base, completes assembly and debugging within the factory, and can be put into operation on site by simply connecting the air duct and power supply. It has a small footprint and fast deployment speed, and can achieve standard exhaust emissions while liquefying and recovering high-value organic solvents. It is very suitable for multi-component exhaust gas treatment scenarios in raw materials, pharmaceutical intermediates, and CDMO enterprises. Many levered equipment on the market are simply assembled with hardware, without process matching for multi-component pharmaceutical waste gas. After being put into operation, various faults such as membrane corrosion, insufficient recovery rate, and back pressure disturbance of reaction kettle negative pressure occur. The process design and project experience of the source manufacturer are particularly critical.
The traditional treatment plan has obvious shortcomings in the face of multi-component pharmaceutical waste gas and the transformation of old factories.RTOIncineration equipment requires a large amount of civil construction, occupies a large area, and has a long construction period. Directly burning valuable solvents and treating halogenated hydrocarbon waste gas will generate corrosive substances, posing a safety hazard of open flames. Only by investing in treatment can there be no recovery of benefits.activated charcoalThe initial purchase cost of adsorption equipment is low, but under intermittent fluctuation conditions, the filter material is easily saturated quickly and needs to be replaced frequently, generating a large amount of hazardous waste. The cost of hazardous waste disposal continues to rise, and solvent liquefaction recovery cannot be achieved. The on-site welding, assembly, and debugging of split type condensing membrane equipment require a large amount of work, a long technical transformation cycle, and high requirements for on-site infrastructure conditions. Some of the dismantling and assembly equipment only integrates hardware and lacks the ability to balance multi-component materials. The membrane components are not resistant to halogenated hydrocarbon corrosion, and the back pressure control is not in place, which interferes with the negative pressure production of reaction vessels and vacuum pumps.
The pry mounted compression condensation membrane coupled liquefaction recovery unit belongs to a fully physical process, without open flames, and is specifically designed to adapt to multi-component mixed waste gas from pharmaceuticals. The compressor, multi-stage condenser, halogenated hydrocarbon resistant membrane components, pretreatment unit, and explosion-proof electronic control system are all integrated on the pry base. The exhaust gas first enters the buffering and stabilizing unit to smooth out the impact of air volume concentration, and then goes through demister filtration, pre cooling and dehydration pretreatment to remove drug mist, impurities, and water vapor, protecting the core components at the rear end. The exhaust gas is compressed and pressurized to increase the partial pressure of solvent vapor, and various ketone, ester, and halogenated hydrocarbon solvents are directly liquefied and recovered in a multi-stage gradient condensation unit; The residual exhaust gas that has not been fully condensed is sent to a specialized halogenated hydrocarbon resistant membrane module for enrichment and separation. The concentrated high concentration organic gas is circulated in the front-end of the reflux equipment for treatment. After treatment, the exhaust gas meets the emission standards. The recovered liquid solvent is sent back to the production workshop for reuse after phase separation treatment.
Pharmaceutical enterprises purchase skid-mounted multi-component solvent liquefaction recovery equipment, selection needs to pay attention to the core points. Manufacturers should have the ability to survey working conditions, multi-component material accounting, combined with on-site air volume, solvent ratio, water content, intermittent production cycle to measure recovery, energy consumption and return on investment cycle, refused to standardize one-size-fits-all configuration. Exhaust gas contains dichloromethane halogenated hydrocarbon components, must be equipped with a special membrane component resistant to halogenated hydrocarbons to avoid swelling failure of the membrane element. The skid-mounted unit shall do a good job in the internal flow channel design, strictly control the back pressure of the system, and cannot raise the pipeline pressure to ensure that the negative pressure of the reaction kettle and vacuum pump is not disturbed. The explosion-proof grade of the whole machine is matched with Class A workshop, and a full set of safety interlocks for combustible gas, overtemperature and overpressure are provided. The complete configuration of the pretreatment unit cannot be simplified and cut, extending the service life of the condenser and membrane module. Priority is given to the source factory with its own production workshop and experience in the implementation of pharmaceutical multi-component waste gas skid-mounted projects, avoiding simple integrated assembly manufacturers to ensure the efficiency of spare parts supply and fault response.
LuoyangWohong PetrochemicalEquipment Co., Ltd. is a reliable source manufacturer of skid-mounted pharmaceutical solvent liquefaction recovery equipment. It has its own standardized production workshop, refuses to assemble simple accessories, and deeply cultivates pharmaceutical multi-component intermittent waste gas conditions. The whole set of skid installation unit integrates compression, condensation, membrane separation, pretreatment and explosion-proof electric control. The assembly, welding, pressure test and linkage test of the whole machine are completed after delivery. Special optimization is made for halogenated hydrocarbon corrosion, concentration impact and system back pressure control. The explosion-proof grade of the whole machine is ExdⅡ CT4, and complete safety interlock protection is provided. PLC frequency conversion automatic operation, can follow the exhaust gas load automatically adjust the power, adapt to batch intermittent production, multi-component mixed exhaust gas comprehensive recovery rate of 95-98%. The equipment covers a small area, can be placed indoors or arranged in the open air, does not need complicated civil engineering, and can be quickly put into production when it arrives at the site to connect the air duct and power supply, hardly generates waste activated carbon and hazardous waste, reduces the long-term operation and maintenance expenses of the enterprise, and is suitable for the environmental protection technological transformation of new production lines and old workshops.
The equipment is suitable for bulk drugs, pharmaceutical intermediates, CDMO and fine chemical enterprises, and can handle various mixed 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, multi-component material balance calculation, return on investment calculation, customized process plan, skid-mounted 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 several sets of skid-mounted multi-component solvent recovery projects in the pharmaceutical industry to help enterprises achieve exhaust emission standards, complete the recycling of organic solvent resources.
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