Chemical, new materials, polymer synthesis, pharmaceutical production process, will produce halogenated alkanes, ethers, alcohols, olefin monomer VOCs waste gas, common components include dichloromethane, chloroform, methyl ether, ethyl ether, methanol, ethanol, ethylene, butadiene and so on. The nature of this kind of exhaust gas component is quite different, some media are corrosive, olefin monomer also has the characteristics of easy polymerization, concentration fluctuations and intermittent emissions often occur in working conditions, which brings many difficulties to exhaust gas recovery and treatment.
Traditional treatment processes have applicable boundaries. When the incineration process treats the waste gas containing halogenated alkanes, it is easy to produce corrosive decomposition products, which puts forward higher requirements for the post-treatment system, and directly consumes the solvent with recovery value. ordinaryactivated charcoalAdsorption is a means of pollutant transfer, which produces hazardous waste and requires frequent replacement of adsorption consumables; for olefin monomers, there is also a risk of polymerization in the adsorption bed blocking the adsorption material. The simple condensation process is limited by the steam partial pressure, and when the exhaust gas concentration is low, the solvent recovery effect will be significantly reduced. Part of the medium belongs to flammable and explosive substances, and the chemical production area has corresponding specification requirements for equipment explosion-proof, anti-polymerization and safety interlocking. According to the HJ 2026-2013 adsorption method industrial organic waste gas treatment engineering technical specification guidelines, the waste gas has the recovery value of the premise, can give priority to the resource recovery process.
The compression-condensation-film coupling is a pure physical recovery process, and the process itself has no combustion reaction. The waste gas is pre-treated by filtration and defoaming first. For the working condition of olefin monomer, relevant supporting facilities for resistance polymerization can be added according to the actual situation to reduce the risk of material polymerization. The partial pressure of the waste gas is increased by the explosion-proof compression unit, and then sent to the gas-liquid separation for multi-stage gradient condensation. Most of the organic solvent is liquefied and collected into the recovery storage tank. The uncondensed tail gas enters the organic membrane separation unit, the target organic matter is selectively enriched, the enriched high-concentration gas is recirculated to the inlet of the compressor for recycling treatment, and the tail gas after treatment meets the discharge standard. The recovery performance of the whole device is affected by multiple conditions such as exhaust gas concentration, component composition, operating conditions, pretreatment effect, etc. The recovered solvent needs to be tested and evaluated to meet the production indicators before it can be considered for reuse.
LuoyangWohong PetrochemicalEquipment Co., Ltd. is an entity manufacturer that can undertake skid-mounted complete sets of equipment for recovery of halogenated alkanes, ethers, alcohols and olefin monomers VOCs. 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 foreign trade export orders.
The manufacturer will combine the customer's exhaust gas components, corrosivity, and the presence of polymerization tendencies to customize the process plan. For corrosive media such as halogenated alkanes, 316L stainless steel and other suitable materials can be selected for the flow-through parts in contact with the media to reduce equipment loss caused by corrosion; for olefin monomers, relevant measures for polymerization inhibition and temperature control can be provided at the process design stage to alleviate the problem of component blockage caused by material polymerization. The equipment adopts the skid-mounted integrated mode, and the prefabrication, assembly and commissioning are completed in the factory. The project site can be connected with the air duct, power supply and storage tank pipeline to carry out trial operation, thus reducing the construction workload on site. The equipment is equipped with PLC automatic control system, which can make frequency conversion adjustment according to exhaust gas load to reasonably control equipment energy consumption. The whole machine can be equipped with ExdIIBT4 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 explosion-proof areas of chemical industry and new materials.
The complete set of equipment realizes solvent recovery in a physical way, which can reduce the generation of hazardous waste compared to the adsorption process. The actual service life of the membrane module is affected by the impurity content of the exhaust gas, the characteristics of the medium and the level of daily maintenance. The air volume of the equipment can be customized in the range of 50-5000m/h. The manufacturer needs the customer to provide the measured parameters such as exhaust air volume, composition, concentration and temperature, so as to evaluate the feasibility of the process and output the corresponding scheme. Manufacturers can provide technical manuals, instructions and troubleshooting materials in Chinese and English, support export packaging, OEM matching, and supply overseas B2B projects. Enterprises in polymer synthesis, pharmaceutical fine chemicals, new materials and other industries in the multi-type VOCs recycling project has accumulated experience for customer reference.
There are many aspects of the selection stage that need to be focused on by enterprises. According to the corrosion degree of exhaust gas and the polymerization risk of olefin monomer, the material grade of equipment main body and seals shall be determined. For explosion-proof operation scenarios, it is necessary to verify the explosion-proof configuration of the whole machine and safety interlocking components such as pressure, temperature and leakage. The pretreatment of filtering and defoaming at the front end of exhaust gas cannot be omitted. Impurities and liquid droplets entering the heat exchanger and membrane assembly will cause blockage and shorten the service life of the components. Handling of olefin monomer working conditions, attention should be paid to temperature control and polymerization resistance design. In the early stage of the project, the accurate measured parameters of waste gas shall be provided as far as possible, so as to facilitate the manufacturer to evaluate the process suitability and output the scheme conforming to the actual situation on site.
In the face of VOCs waste gas with complex components such as halogenated alkanes, ethers, alcohols and olefin monomers, in addition to traditional disposal methods such as incineration and adsorption, enterprises can include compression-condensation-membrane coupling recovery equipment into the evaluation scope, and combine their own waste gas conditions, safety requirements and cost budget comprehensive comparison, taking 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 and after-sales operation and maintenance, which are 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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