Exhibitor List
| Company | DEMISTER (SHANGHAI) ENVIRONMENTAL TECHNOLOGY CO.,LTD. |
| Country | China |
| Products | Heat recovery / energy production and saving Dust removal |
| Hall | E7 |
| Booth | B11 |
| Website | www.demistersh.com |
| Introduction | DEMISTER (Shanghai) Environmental Technology Co.,Ltd.established on 2011, is rooted in the field of energy conservation and environmental protection. The main scope of business includes the research, development, design, production, and sales of mist eliminator, dust removal, and demisting equipment, as well as industrial waste heat and energy recovery solutions. Provide more than 2000 sets of equipment and solutions for various industries and export to multiple countries. |
Products
| CSF condensing dust and mist eliminator Generation III Technology: Introduction to CFS Condensing Dust & Mist Elimination Technology In 2020, DEMISTER Company developed the third generation technology, CFS Condensing Dust and Mist Elimination Technology, solving the problem of managing submicron-level dust in absorption towers and bringing new impetus to environmental protection efforts. Building on the foundation of the second generation condensing wet film dust and mist elimination technology, the company successfully developed the CFS Condensing Dust and Mist Elimination series products, which have been applied in engineering projects. This technological achievement reflects the company's patent intelligence, with the patent application number ZL 2022 10214184.6. DEMISTER will continue to innovate technologically, contributing more to environmental protection and industry development. I. Principle of the CFS Condensing Dust and Mist Eliminator The CFS Condensing Dust and Mist Technology is DEMISTER Company's third-generation patented technology. This technology inherits the core advantage of condensation from the second generation, allowing dust and fine droplets in the flue gas to adsorb gaseous water and transform into liquid water droplets, thereby rapidly increasing particle size and making the separation process more efficient (according to the principle of mist eliminators, the larger the droplet size, the easier it is to remove). Compared to traditional vane-type mist eliminators, the CFS technology significantly improves separation efficiency and greatly reduces the required space in the absorption tower. Although vane-type mist eliminators attempt to optimize performance by increasing flow bending paths, narrowing blade spacing, enlarging flow area, and inclining arrangement, their limit of separable particle size remains at 13.5μm. The core principle of the CFS Condensing Dust and Mist Technology lies in the fact that when saturated wet flue gas carrying dust and droplets flows through specially designed spiral tubes, continuous inertial and centrifugal forces are generated within the spiral flow path. As the flue gas cools, gaseous water gradually transforms into liquid water droplets, which envelop and cover the fine particles in the flue gas, causing the particles to gradually increase in size and form regular, smooth-surfaced spheres. This process not only enhances the centrifugal force acting on the fine particles but also effectively reduces the adhesive force of the flue gas on the particles. Moreover, the continuous centrifugal force design of the CFS technology allows for multiple 360-degree rotations, continuously pushing the fine particulates towards the spiral tube wall. The water film on the tube wall rapidly extinguishes these particulates, significantly improving the separation efficiency of fine particulates. Experiments have shown that the CFS technology also displays excellent removal performance for water-soluble submicron particles, including SO3. The national standard GB21508-2008 Mist Eliminator Performance Test Droplet Collector, a 4-spiral glass tube, is used to detect the concentration of escaping droplets behind the absorption tower mist eliminator. By extracting clean flue gas, which flows through the droplet collector, the escaping slurry droplets are separated in this collector's spiral glass tube. After extracting a certain amount of flue gas (e.g., 1m³), the ends of the droplet collector are immediately sealed, then the glass tube is washed with distilled water, and the magnesium ion content in the rinse is detected through Mg2+ titration to calculate the concentration of slurry droplets escaping from the mist eliminator. It is evident that the droplet collector is an exceptionally performing droplet separator (mist eliminator) (the standard does not disclose the capturable droplet size; DEMISTER calculated the captured particle size to be about 1μm).The structure of the CFS condensing dust spiral separator and the droplet collector shares a similarity in ingenious design. II. CSF Condensing Dust and Mist Eliminator Materials For flue gas condensers used in wet flue gas desulfurization purification, the material properties have strict requirements, especially in terms of corrosion resistance and thermal conductivity. Among various materials, metal materials such as 2205 alloy and titanium alloy, as well as non-metal materials like fluoroplastics (PTFE), are widely used due to their excellent characteristics. DEMISTER Company's flue gas condenser uses a non-metal material, graphene carbon alloy material (PPCT). This is a type of graphene composite material produced through an innovative process, involving the pre-mixing of propylene monomers with graphene to ensure that the monomer molecules can effectively intercalate between the layers of graphene, followed by polymerization reaction. The use of in-situ polymerization technology is key to ensuring uniform dispersion of graphene within the polymer matrix, significantly enhancing the material's compatibility, interfacial adhesion, and overall performance. The graphene/polymer composite materials prepared through the in-situ polymerization method not only possess excellent physical and chemical stability but also display good thermal conductivity and corrosion resistance, fully meeting the requirements for flue gas condensers in wet flue gas desulfurization purification systems. By adopting this advanced material technology, DEMISTER Company aims to provide customers with more reliable and efficient flue gas treatment solutions. Graphene, as the thinnest, strongest material discovered to date, with exceptional electrical conductivity, thermal conductivity, and transparency, has garnered widespread attention. Its strength is comparable to 200 times that of steel, and it can stretch up to 20% of its original size, earning it the title of the "miracle material" of the 21st century. Although research on graphene-modified plastics started later in China, its development has been rapid. With the rise of new fields, there is an increasing demand across industries for polymer/graphene nanocomposites with higher performance and more functions. To date, significant research achievements have been made in the field of graphene-modified plastics both domestically and internationally, mainly focusing on the application of graphene in enhancing the electrical conductivity, thermal conductivity, mechanical properties, and barrier properties of plastics. Among them, graphene composites aimed at improving the thermal conductivity of polypropylene (PP), known as thermally conductive graphene plastics (PPCT), have attracted attention for their outstanding thermal conductivity, even surpassing that of ordinary stainless steel. Graphene, as an exceptional new nanomaterial, is primarily produced through three methods: melt blending, solution blending, and in-situ polymerization. Melt Blending: This is an economical and industrial-friendly method, where graphene/polymer composite materials are prepared through physical mixing and melt extrusion. However, this method is less used in practical applications due to poor dispersion of graphene within the polymer matrix. Despite this, it still provides researchers with a viable preparation route and has a certain research value. Solution Blending: Although also a method for preparing graphene composite materials, it is not recommended for practical application due to issues such as significant pollution, high energy consumption, and the need for large amounts of solvent. Nevertheless, it still offers researchers a reference for exploring more environmentally friendly and efficient preparation techniques. In-situ Polymerization: This is the main method currently used to solve the dispersion issue of graphene. This method involves pre-mixing monomers with graphene, allowing monomer molecules to intercalate between the graphene layers, followed by initiating polymerization. This results in graphene/polymer composite materials that are uniformly dispersed, compatible, and have strong interfacial bonding. This method has significant advantages in enhancing the performance of graphene within polymers and has become one of the current research hotspots. Overall, although the dispersion issue of graphene has limited its application in polymer modification to some extent, researchers have discovered various effective preparation methods through continuous exploration and innovation. These methods provide strong support for the application of graphene in the field of polymer modification and are expected to promote the further development and application of graphene materials. III. Advantages of the CSF Condensing Dust and Mist Eliminator The CSF condensing dust and mist eliminator's efficient dust removal advantages are mainly reflected in the following aspects: 1.Innovative Self-cleaning Mechanism: The CSF condensing dust and mist eliminator utilizes the phenomenon of flue gas condensation to make fine dust and droplets grow larger as gaseous water transforms into liquid water, thereby improving the separation effect. This mechanism ensures the inner walls of the eliminator are not prone to scaling, providing a self-cleaning function and reducing maintenance requirements. The generation of condensation water also brings another advantage: it can naturally flow back to the desulfurization absorption tower's slurry pool, effectively replenishing the liquid level, helping to maintain system water balance, and improving water resource efficiency. Additionally, the condensation water produced by the CSF condensing dust and mist eliminator will first wash the upstream demister, meaning that the demister's washing system can be simplified, thus reducing the investment cost of the demister. This optimization not only improves the cost-effectiveness of the equipment but also enhances the overall system's operational efficiency. 2..High Dust Removal Efficiency: The CSF condensing dust and mist eliminator features a spiral multi-bend path blade design that, through continuous centrifugal force, effectively pushes fine particulate matter to the water film-rich tube walls for instant annihilation. This design enables the dust eliminator to effectively remove submicron particles, including SO3, ammonia, soluble salts, ammonium sulfate, etc., significantly improving dust removal efficiency. Project validation has shown that for inlet dust concentrations of up to 80mg/Nm³, i.e., smoke dust above 2.5μm, the net flue gas emissions after passing through the CSF condensing dust and mist eliminator (with a comprehensive dust and mist removal scheme selected for the supporting conditions) can reach less than 5mg/Nm³ without the need for a wet electrostatic precipitator downstream of desulfurization, greatly saving investment and operating costs of the desulfurization system. 3.Optimized Structural Design: The structure of the CSF condensing dust and mist eliminator can be customized according to the desulfurization absorption tower conditions, with single-layer beam, double-layer beam, triple-layer beam, and other design options available. This flexibility allows the dust eliminator to adapt to different working conditions, enabling the upgrade of existing demisting equipment to the CSF condensing dust and mist eliminator without moving beams. The project upgrade can be completed within a month, significantly shortening the construction period for ultra-clean emission upgrades. 4.Space and Cost Savings: Through optimized design and self-cleaning functionality, the CSF condensing dust and mist eliminator reduces the need for a washing water system for the dust eliminator, lowering maintenance costs. Its compact structural design also saves space in the desulfurization absorption tower, improving space utilization. A minimum space of only 4.5m is needed from the surface of the spray layer to the outlet underside of the absorption tower to complete the ultra-clean emission upgrade. 5.Energy-saving and Emission Reduction: The CSF condensing dust and mist eliminator excels in energy-saving and emission reduction. Its unique condensation design maintains a layer of water film on the spiral blades, which is highly effective in removing pollutants such as SO3, ammonium salts, heavy metals, etc., significantly improving the treatment capability for soluble salts. Moreover, the condensation process also endows the equipment with a water-lifting function, allowing for the extraction of a large amount of moisture during the desulfurization stage. When the flue gas is discharged through the chimney, the reduction in moisture effectively lowers the condensation of water vapor in the flue gas, achieving a degree of smoke whitening. This feature not only optimizes the quality of flue gas emissions but also further enhances the environmental performance of the equipment. Additionally, the condensation system of the CSF condensing dust and mist eliminator can also be applied to low-temperature evaporation of wastewater. By recovering waste heat from the flue gas for low-temperature evaporation treatment of wastewater, not only is wastewater effectively managed, but energy utilization efficiency is also improved. This comprehensive design makes the CSF condensing dust and mist eliminator outstanding in energy-saving and emission reduction, providing an efficient and environmentally friendly solution for businesses. In summary, the CSF condensing dust and mist eliminator, with its innovative self-cleaning mechanism, high dust removal efficiency, optimized structural design, space-saving and energy-saving emission reduction functions, offers an efficient and economical solution for flue gas treatment. |
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