Pharmaceutical enterprises multi-component organic waste gas compression condensation film recovery device-Wohong Petrochemical professional custom manufacturers.

The production process of pharmaceutical enterprises covers many pollution-producing links such as synthesis reaction, material feeding, crystallization, solvent extraction, mother liquor treatment, vacuum desolution, storage tank respiration, etc., which will continuously produce multi-component organic waste gas. The waste gas is mixed with ethyl acetate, dichloromethane, acetone, tetrahydrofuran, various alcohols and other common organic solvents for medicine. Affected by batch intermittent production, the concentration of exhaust gas in the stages of material transfer, pressure relief and pressure breaking exhaust is instantaneously high, the concentration in the stage of static cooling of the process is reduced, and the staggered peak exhaust of different stations further causes dynamic changes in the air volume, composition and concentration of exhaust gas. Exhaust gas flow will carry solvent droplets, trace material aerosols, colloidal residues and saturated water vapor. Halogenated solvents will hydrolyze with water vapor to generate acidic corrosive medium, which is easy to cause corrosion and pollution of gas gathering pipelines, heat exchangers and membrane modules. The pharmaceutical production area belongs to Class A explosion-proof control site. The organic medium is flammable and explosive, and some materials have physiological toxicity. It puts forward strict technical conditions for the multi-component compatible processing capability, aerosol droplet pretreatment effect, instantaneous concentration impact resistance, corrosion resistance, explosion-proof safety interlocking system and continuous operation capability under wide working conditions of the compression condensation film recovery device.

The traditional waste gas treatment process has obvious application limitations in the face of multi-component mixed organic waste gas conditions in pharmaceutical enterprises. The incineration process can oxidize and decompose the organic matter in the waste gas, but a variety of organic solvents with high recovery value will be directly incinerated, resulting in a large amount of material loss. When the exhaust gas contains halogenated hydrocarbon components, corrosive and toxic by-products such as hydrogen chloride are easily generated under high temperature conditions, and complex post-processing systems such as quenching and absorption need to be built, resulting in high equipment investment, fuel consumption and daily operation and maintenance costs.activated charcoalAdsorption is a pollutant transfer treatment method, which cannot realize the recycling of solvent resources. In the face of pharmaceutical waste gas with complex components and violent concentration fluctuations, mist droplets and colloidal impurities entrained in the intake air are superimposed, and the adsorption filler is easily bonded and quickly reaches adsorption saturation. Under high-concentration impact conditions, there is still a potential safety hazard of adsorption and heat release. Frequent shutdown is required to replace adsorption consumables, resulting in large output of hazardous waste, further increase the burden of hazardous waste storage and transportation and operation and maintenance of enterprises. The simple condensation process relies on low temperature to achieve solvent liquefaction and precipitation, only in the high concentration range of exhaust gas has a good recovery effect, low concentration of organic steam pressure is insufficient, solvent recovery efficiency is greatly attenuated, a large number of organic components with the exhaust gas directly emptying, can not achieve full-cycle stable resource treatment. A large number of project landing experience shows that a single treatment process is difficult to adapt to the pharmaceutical enterprises multi-component, intermittent pulse of complex exhaust gas conditions, concentration peak time device processing capacity is insufficient, low concentration interval exhaust emissions are easy to exceed the standard, it is difficult to meet the safety of production, environmental protection standards, solvent recovery and cost reduction of multiple business demands.

The compression condensation film coupling is a full physical treatment process, the process is no combustion, no chemical reaction, very suitable for pharmaceutical enterprises multi-component organic waste gas compression condensation film recovery device. Multi-component waste gas from each production station is collected and transported through a closed negative pressure gas collecting pipeline network. The waste gas first enters the pretreatment unit of the device, and the solvent mist droplets, material aerosol, colloidal residue and free moisture carried by the airflow are removed by means of a multi-stage filtering and defoaming structure, so as to avoid impurities from entering the back-end compressor, heat exchanger and membrane components, causing blockage, glue formation and irreversible pollution of membrane components. In view of the characteristics of pharmaceutical waste gas components, many types of impurities and large fluctuations in working conditions, the pretreatment unit adopts a hierarchical interception structure, which completes purification protection step by step according to the particle size of impurities, effectively protects the precision core components at the back end and prolongs the service life of the whole device. After the pretreatment, the waste gas enters the compression unit to increase the partial pressure of organic steam, change the equilibrium state of gas-liquid phase, and create favorable conditions for liquefaction of various mixed solvents. The gas enters the multi-stage gradient condensation module, and gradient cooling is carried out based on the boiling point difference between different solvents. Most organic solvents are liquefied and precipitated, and the preliminary solvent recovery operation is completed.

After the condensation treatment, the tail gas still leaves some unliquefied organic components, enters the organic membrane separation unit, and completes the enrichment and concentration of the organic components by virtue of the difference in the permeation rate of the polymer separation membrane material for the organic solvent molecules and the air molecules. The high-concentration organic gas flow obtained from the membrane side enrichment is returned to the compressor inlet to form a closed-loop cycle of the system, further improving the comprehensive recovery rate of a variety of mixed solvents. After precipitation, water separation filtration and index detection, the recovered liquid mixed organic solvent can be sent back to the workshop production process for recycling and reuse after all indexes meet the requirements of pharmaceutical production process, so as to recover the solvent resources originally lost with the volatilization of waste gas, reduce the amount of hazardous waste generated from the source, and reduce the solvent procurement cost and hazardous waste disposal expenses of enterprises. The whole set of device adopts a skid-mounted integrated structure. The whole machine assembly, explosion-proof calibration and pressure test are completed inside the factory. The site can be put into use only by docking pipelines, power supply and automatic control signals, thus greatly reducing the amount of on-site construction, compressing the shutdown period of technological transformation and reducing the interference to continuous production in the pharmaceutical workshop.

The entire system is designed in strict compliance with explosion-proof standards for the pharmaceutical industry. All piping, valves, and heat-exchange components that come into contact with the exhaust gas are fabricated from corrosion-resistant materials to withstand the acidic corrosion caused by the hydrolysis of halogenated media, thereby ensuring long-term, continuous operation of the plant. The equipment is equipped with comprehensive overpressure, overtemperature, and combustible gas detection systems, as well as automatic interlock protection mechanisms, to handle the instantaneous concentration surges caused by pressure relief and material transfer, thereby mitigating various safety risks associated with flammable and explosive media. The intelligent variable-frequency control system dynamically adjusts the operational load of the equipment based on changes in intake air volume and concentration, thereby accommodating the intermittent, pulsed nature of waste gas emissions typical of pharmaceutical batch production. This prevents both equipment overload and unnecessary idle operation, ultimately optimizing overall energy consumption. Based on on-site measurements of exhaust gas flow rate, component composition, concentration fluctuation ranges, impurity levels, ductwork layout, and workshop site conditions, we offer customized solutions rather than relying on standardized, off-the-shelf models. We provide end-to-end services, including on-site condition assessment, process design, equipment manufacturing, field installation and commissioning, operator training, and ongoing operation and maintenance.Standardized production and manufacturing, standardized on-site construction, and routine inspection and maintenance ensure the long-term stable operation of the entire compressed condensation membrane recovery system, enabling pharmaceutical companies to achieve compliant treatment of multi-component organic waste gases while recovering organic solvents as valuable resources, thereby reducing costs and improving efficiency.