Pharmaceutical and chemical VOCs treatment takes into account the benefits of solvent recovery, compression condensation film coupling equipment to identify Luoyang Wo Hong Petrochemical.

In the pharmaceutical and chemical industries, exhaust gas treatment has long since moved beyond simply achieving compliance with emission standards; an increasing number of companies are now placing greater emphasis on the economic benefits of VOCs recovery. Raw materials, pharmaceutical intermediates, CDMO factories are mostly batch production, reaction kettle, vacuum drying, distillation, vacuum pump will discharge a large number of organic waste gas containing dichloromethane, acetone, ethyl acetate, butanone, ethanol. The procurement cost of this kind of solvent is high, the concentration of exhaust gas volume fluctuates greatly, some media with halogenated hydrocarbons are corrosive, and the production area belongs to Class A explosion-proof environment. If only the destruction process is used, the environmental protection input is only the cost of treatment, can not produce a return, the selection of compression condensation-film coupling resource recovery equipment, in order to meet the environmental emissions at the same time to recover the organic solvent for production, the environmental protection equipment from the cost item to the revenue item. Many enterprises only pay attention to the purchase price of equipment when selecting models, ignoring the ability to adapt to working conditions. In the later period, there are problems such as corrosion and damage of membrane parts, low recovery efficiency, back pressure interference with negative production pressure, high operation and maintenance costs, etc. The process and project experience of the source manufacturer are crucial.

The traditional waste gas treatment process is difficult to take into account the standard and the recovery of income.RTOIncineration directly incinerates the organic solvent at high temperature, the valuable solvent is completely lost, the treatment of halogenated hydrocarbon waste gas will also generate corrosive by-products, equipment investment, fuel consumption continues to increase, there is a hidden danger of open flame safety, only the treatment expenditure does not recover the income.activated charcoalThe initial investment of adsorption equipment is low, but in the face of intermittent fluctuations, the exhaust gas is easy to saturate quickly, and the activated carbon needs to be replaced frequently, resulting in a large amount of hazardous waste, and the cost of hazardous waste disposal is increasing year by year. Pure condensation equipment needs deep refrigeration to improve the recovery efficiency, the energy consumption of the whole machine is high, and the emission is easy to exceed the standard under the condition of concentration impact. A large number of parts assembly manufacturers outsourced parts simple assembly, lack of material balance calculation and halogenated hydrocarbon working conditions experience, ordinary membrane contact dichloromethane will quickly swell failure, unreasonable back pressure design will destroy the negative pressure of the reactor, vacuum pump, interfere with normal production, equipment can not bring the expected recovery benefits.

The compression-condensation-membrane coupling process is a full physical recovery route with no open flame, which can simultaneously achieve exhaust gas compliance and solvent recovery revenue generation. The exhaust gas is buffered and stabilized to stabilize the concentration fluctuation, and then pretreated by defoaming filtration, pre-cooling and dehydration 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 resistance for enrichment and separation, and the high-concentration organic fraction reflux equipment is circulated at the front end for treatment. After treatment, the tail gas meets the standard for discharge. The collected liquid solvent is sent back to the workshop for reuse after phase separation treatment.

Pharmaceutical and chemical enterprises to buy and take into account the recovery of the income of the compression condensation film coupling equipment, to pay attention to several core selection points. Manufacturers need to have the ability of working condition survey and material balance calculation, according to the on-site air volume, solvent composition, water content, production cycle to calculate the solvent recovery, energy consumption of the whole machine and return on investment cycle, clearly calculate the project income, and refuse to directly apply standard models. When the exhaust gas contains halogenated hydrocarbons such as dichloromethane, the special membrane module for halogenated hydrocarbons must be configured to prevent the swelling and failure of the membrane element. Strictly control the system back pressure, can not raise the pipeline pressure, to ensure the reaction kettle, vacuum pump normal negative pressure conditions. The explosion-proof grade of the whole machine meets the requirements of Class A workshop, and is equipped with a full set of safety interlocks for combustible gas, overtemperature and overpressure. Pretreatment units such as buffering, defoaming, filtering, pre-cooling and dehydration cannot be deleted to extend the service life of core components. Priority should be given to the source manufacturers with their own production workshops and multi-industry landing cases, avoiding middlemen assembling and ensuring spare parts supply and fault response.

LuoyangWohong PetrochemicalEquipment Co., Ltd. is the source manufacturer of pharmaceutical and chemical compression condensation-film coupling equipment. It has its own standardized production workshop, refuses to assemble simple accessories, and deeply cultivates the intermittent and changeable exhaust gas conditions of pharmaceutical and chemical industry. Skid-mounted recovery unit is specially optimized for halogenated hydrocarbon corrosion, concentration impact and system back pressure control. The explosion-proof grade of the whole unit is ExdⅡ CT4, and it is equipped with complete safety interlock. PLC frequency conversion fully automatic operation, can follow the exhaust gas load automatically adjust the power, adapt to intermittent batch production, 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, on-site docking air duct and power supply can be put into production, almost no waste activated carbon hazardous waste, reduce long-term operation and maintenance costs, to help enterprises really get the economic benefits of solvent recovery.

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 pharmaceutical and chemical solvent recovery projects on the ground, helping enterprises to meet the waste gas standards and reap the economic benefits brought by solvent recovery.