Microwave Pyrolysis Kiln for Hazardous and Solid Waste

Microwave Pyrolysis Kiln for Hazardous and Solid Waste: A New Process for Organic Waste Treatment

I. Principle of Microwave Pyrolysis for Hazardous Waste:

Microwave Pyrolysis Technology: Under anaerobic or oxygen-deficient conditions, thermal energy is used to break down large molecular organic compounds into smaller, more manageable molecules such as combustible gases, oils, and carbon black. Microwave pyrolysis and incineration are fundamentally different processes. Incineration is an exothermic process, while pyrolysis first requires absorbing substantial microwave energy to heat the material itself. Once a certain temperature is reached, fission occurs, achieving harmless and volume-reducing treatment. The main products of incineration are carbon dioxide and water, whereas microwave pyrolysis primarily yields combustible low-molecular compounds. Incineration produces secondary pollutants like dioxins and soot, while microwave pyrolysis, conducted in an oxygen-free environment, avoids dioxin formation and emits no exhaust or soot. Additionally, the selective heating and catalytic properties of microwaves enable the recovery of valuable materials from chemical solid waste, facilitating reuse and reducing resource waste.

Traditional disposal methods for chemical solid and hazardous waste, such as landfilling and incineration, fail to achieve safe, effective, harmless, volume-reducing, and resource-recycling treatment. In contrast, microwave pyrolysis aligns with the overarching principles of hazardous waste pollution prevention—reduction, resource recovery, and harmlessness. It can reduce residue volume by over 90% and weight by over 80%. By optimizing operational conditions, it suppresses the generation of secondary pollutants. With stringent exhaust gas purification measures, harmful secondary pollutants like dioxins, furans, heavy metals, acidic gases, and soot are efficiently cleaned. Moreover, it requires less space and enables resource reuse (e.g., power, heat, and gas supply). However, initial investment costs are high, and preprocessing steps such as classification, dehydration, and crushing, as well as post-treatment processes like separation and collection of exhaust gases and oils, require supporting equipment.

Therefore, for conventional hazardous waste categories such as fly ash, slag, smelting waste residue, tailings, desulfurization gypsum, chemical waste salt, oil sludge pyrolysis for gas production, carbonization and ashing of chemical waste, coal gasification from tailings, nuclear waste treatment, and RDF (refuse-derived fuel), treatment using microwave equipment presents a novel solution.

II. Application Features of Microwave Equipment:

Hazardous and solid waste microwave pyrolysis equipment heats materials (powder, granules, blocks, flakes, columns, or small items of any shape) by absorbing microwave energy. Microwaves are extremely high-frequency electromagnetic waves. In a microwave field, polar and non-polar molecules within the material polarize, forming dipoles that align with the electric field direction. As the electric field alternates, these dipoles rotate and vibrate—for instance, at 2450 MHz, they oscillate 2.45 billion times per second—generating a molecular friction effect that converts electrical energy into heat, making the material itself the heat source. In contrast, conventional coal, electric, oil, or gas kilns are energy-intensive and polluting, with external heat conduction that progresses from surface to core, resulting in slow heating, low thermal efficiency, high energy consumption, and a tendency for coking, necessitating regular cleaning, shutdowns for maintenance, and frequent component replacements.

Microwave technology offers energy savings (high thermal conversion efficiency, over 30% more energy-efficient than traditional heating), environmental benefits (no emissions, effectively reducing harmful substances), cleanliness (materials heat themselves via microwave absorption, contact-free and pollution-free, enhancing product quality and yield), and high efficiency (rapid heating, high energy utilization). ZhongSheng's industrial microwave equipment operates at temperatures up to 1600°C with kiln temperature stability within ±5°C, high automation, reduced labor requirements, and improved production environments.

III. ZhongSheng's Quality Advantages in Industrial Microwave Equipment:

Hunan ZhongSheng Thermal Energy Technology Co., Ltd., established in 2011 with registered capital of 12 million RMB, specializes in the R&D, application, and manufacturing of microwave thermal technology for industrial use. It designs, produces, and sells integrated microwave industrial systems, primarily offering microwave experimental furnaces for enterprises and research institutions, as well as custom industrial microwave equipment. The company holds 12 invention patents and 57 utility model patents. Its microwave heating kiln technology was included in the National Development and Reform Commission's fifth batch of key energy-saving technology promotion catalogs. Unlike low-power household microwaves, ZhongSheng's industrial microwave equipment is built for continuous operation, stability, and durability in industrial settings. It features professionally configured 1.5 kW industrial-grade microwave sources with continuously adjustable power, ensuring uniform, adjustable, and controllable chamber temperatures for 24/7 operation. Proprietary crack antenna feed systems ensure even microwave fields without damaging magnetrons, allowing uninterrupted use and online replacement of wear parts without halting production. Unique microwave leakage prevention devices limit leakage to ≤1 mW/cm² (national standard: ≤5 mW/cm²), enhancing safety beyond typical industry compliance. ZhongSheng has successful applications in microwave drying equipment, experimental furnaces, high-temperature bell kilns, push-plate kilns, roller hearth kilns, and pyrolysis kilns.

IV. Equipment Matters: Technical Exchange / Sampling / Inspection / Ordering

Hazardous and Solid Waste Microwave Pyrolysis Equipment Inquiry: Manager Xu of ZhongSheng:156 7439 3491

Factory Address: Tonghai Road, Economic Development Zone, Yueyang City, Hunan Province