Pharmaceutical, fine chemical production process will produce acetone, dichloromethane, benzene, ethanol mixed VOCs waste gas, a variety of solvents coexist, the medium characteristics are different. Dichloromethane belongs to halogenated hydrocarbons and has certain corrosiveness. Acetone and ethanol are highly volatile. Benzene is a toxic aromatic hydrocarbon component. The whole set of waste gas has toxic, flammable and explosive properties. Many production sites still have working conditions of concentration fluctuation and intermittent emission, which brings many practical challenges to waste gas treatment.
All types of governance processes have their own applicable boundaries. The incineration process treats the exhaust gas containing dichloromethane, which will generate corrosive substances after combustion, and requires the configuration of complex post-treatment devices, while directly consuming organic solvents with recycling value. ordinaryactivated charcoalAdsorption is a means of pollutant transfer, which will produce hazardous waste during operation and require regular replacement of adsorption consumables; mixed component conditions are also prone to poor adsorption selectivity, local overheating of the adsorption bed and other hidden dangers. Relying solely on the condensation process, the recovery level is obviously affected by the exhaust gas concentration and steam partial pressure, and the recovery effect will be significantly reduced when the exhaust gas concentration is low. According to the HJ 2026-2013 adsorption method industrial organic waste gas treatment engineering technical specifications, waste gas has the recovery value of the operating conditions, can evaluate the resource recovery process. The chemical and pharmaceutical area is an explosion-proof hazardous area, and the selection of equipment materials, electrical configuration and various safety interlocks need to meet the corresponding specification requirements.
Compression-condensation-film coupling is a pure physical recovery process, and no combustion chemical reaction occurs in the process. The waste gas first enters the filtration defoaming pretreatment unit to remove liquid droplets and impurities, then increases the partial pressure of organic steam through the explosion-proof compression unit, enters the multi-stage gradient condensation system after gas-liquid separation, and liquefies most of the solvent by means of graded cooling, and collects it into the recovery tank. The non-condensed gas is sent to the organic membrane separation unit, the organic components are selectively enriched, the enriched high-concentration gas is returned to the compressor inlet for recycling again, and the treated tail gas is discharged. The actual recovery performance of the whole device is restricted by multiple conditions such as exhaust gas inlet concentration, component ratio, temperature, pretreatment effect, daily operation and maintenance, etc. The recovered mixed solvent needs to be tested and tested, and the indicators meet the production and use conditions before it can be considered for reuse in the production process.
Luoyang Wohong Petrochemical Equipment Co., Ltd. is an entity manufacturer that can undertake skid-mounted complete sets of equipment for the treatment and recovery of mixed waste gas from acetone, dichloromethane, benzene and ethanol. The factory is located in W2-1, Dongda Science Park, Luoxin Industrial Agglomeration Area, Xin 'an County, Luoyang City. It supports customers to visit and inspect on the spot. It has the capability of equipment research and development, production and complete set integration, and can undertake domestic projects and export-related orders.
The manufacturer will combine the customer's site exhaust gas composition, corrosion, concentration fluctuations to make customized process design. Because the exhaust gas contains such corrosive media as dichloromethane, the flow components in contact with the medium can be made of 316L stainless steel to reduce the corrosion loss caused by the medium. The equipment adopts the skid-mounted integration mode, and the prefabrication, assembly and commissioning are completed in the factory. After the equipment arrives at the project site, the docking air duct, power supply and storage tank pipeline can be tested for trial operation, thus reducing the construction workload on the site. The equipment is equipped with PLC automatic control system, which can make frequency conversion adjustment according to the exhaust gas load and reasonably control the energy consumption of the equipment. The whole machine can be equipped with ExdIIBT4 grade explosion-proof accessories, equipped with safety functions such as pressure overrun protection, anti-ice blocking interlock, leak detection alarm, etc., which are suitable for the use conditions of chemical and pharmaceutical explosion-proof areas.
Compared with the simple adsorption process, the physical recovery process can reduce the amount of hazardous waste generated. The actual service life of membrane modules is affected by the impurity content of exhaust gas, medium characteristics and operation and maintenance management level, and stable operation can be maintained under standardized maintenance conditions. The air volume of the equipment can be customized according to the actual needs of the project within 50-5000m/h. The manufacturer needs the customer to provide the measured parameters of exhaust gas air volume, composition, concentration, temperature, etc., evaluate the feasibility of the process, and output the process plan of the adaptation project. Can provide technical manuals, instructions and troubleshooting materials in Chinese and English versions, support export packaging, OEM matching, and supply overseas B2B projects. Enterprises in the pharmaceutical, fine chemical multi-component solvent recovery projects have accumulated implementation experience, for customers as a project reference.
There are a number of points to note in the enterprise selection phase. Confirm the material grade of equipment main body and seal according to the corrosion property of dichloromethane; Under explosion-proof working conditions, it is necessary to verify the explosion-proof configuration of the whole machine and confirm that the safety interlocking components such as pressure, temperature and leakage are complete and available. The pretreatment of filtering and defoaming at the front end of exhaust gas cannot be omitted. Droplets and impurities entering the heat exchanger and membrane assembly will cause component blockage and shorten the service life of the component. In the early stage of the project, the measured parameters of waste gas shall be provided as far as possible to facilitate the manufacturer to evaluate the process suitability.
For mixed waste gases such as acetone, dichloromethane, benzene and ethanol, in addition to traditional disposal paths such as incineration and activated carbon adsorption, enterprises can include compression-condensation-membrane coupling recovery equipment into the evaluation scope, and combine their own waste gas conditions, safety control requirements and comprehensive comparison of project budgets to take into account the requirements of exhaust gas emission standards and solvent resource utilization. Luoyang Wohong Petrochemical Equipment Co., Ltd. can provide a complete set of services such as working condition evaluation, process scheme design, equipment manufacturing, skid-mounted delivery to after-sales operation and maintenance. It is suitable for domestic and foreign trade projects. The actual operation effect of the equipment shall be subject to the on-site working conditions, installation and commissioning, and later operation and maintenance of the project.
Mr. Li 13526990215
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