Hunan Vary Tech Co.,LTD.
About
Hunan Vary Tech Co., Ltd. is a Chinese environmental technology company founded in 2006 and headquartered in Changsha, Hunan Province, specializing in solid waste resource utilization through mechanical recycling and oxygen-free pyrolysis. Operating from a 67,000 m² manufacturing base with annual production of approximately 200 equipment sets and output value of 200 million RMB, the company holds over 260 patents including 60+ invention patents and has participated in drafting 14 Chinese national standards. Vary Tech's flagship is the 6th-generation Energy Island pyrolysis system, a 240 ton/day continuous-operation unit with multi-layered flexible sealing (physical, mechanical, and inert gas) achieving near-zero leakage for 24/7 operation. The anti-coking design includes online automatic cleaning without shutdown, and cascade heat recovery reduces energy consumption approximately 15% compared to traditional incineration. Non-condensable gas is purified and reused as heating fuel for self-sufficiency. The company provides dedicated pyrolysis solutions for municipal sludge (aerobic decomposition for soil conditioning or carbonization), industrial sludge from paper, printing/dyeing, and leather industries, and oil sludge HW08 processed at 400-450°C in isolated-air conditions to recover liquid fuel oil and recyclable gas. Additional product lines include lithium battery waste pyrolysis (8-15 tons/batch/day), biomass carbonization (up to 50 tons/day), and mechanical crushing and sorting systems for e-waste, appliances, and vehicles. Vary Tech holds ISO 9001, 14001, and 45001 certifications and exports to South Korea, Thailand, Indonesia, Japan, and other international markets.
Key Products
Drying and distillation combined continuous converter for oxygen-free pyrolysis of sludge and solid waste, operating 24/7 with PLC/DCS control, capacity up to 50 tons/day per unit.
Pyrolysis treatment for urban sewage sludge from WWTPs, converting dewatered sludge to biochar or soil conditioner through aerobic decomposition and carbonization.
Pyrolysis and carbonization treatment for industrial sludge from paper, printing/dyeing, and leather industries, with low-temperature drying pretreatment and thermal energy recycling.
Pyrolysis treatment for oil-contaminated sludge including steel mill, drilling cuttings, tank bottom, and refinery scum, operating at 400-450°C in isolated-air conditions to produce fuel oil and recyclable gas.
Physical recycling equipment for solid waste preprocessing, separating recyclable materials through crushing and automated sorting before pyrolysis treatment.
Continuous carbonization system producing biochar from organic waste and sludge feedstocks, with applications in soil amendment and carbon sequestration.
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