Green tea drying is a technically specialised operation that operates within far tighter thermal constraints than black tea processing, reflecting the delicate composition of green tea and the premium that buyers place on colour brilliance, fresh vegetal aroma, and high catechin content. Unlike black tea, green tea is not fermented, the polyphenol oxidase enzymes responsible for oxidation are inactivated during the fixing (kill-green) step using steam, pan, or hot air. The subsequent drying process must reduce moisture from approximately 50–65% after rolling down to a final 3–5%, but must do so without applying temperatures that further degrade chlorophyll (the source of green colour), volatilise the high-temperature-sensitive aroma compounds, or reduce catechin concentrations that determine the health benefit profile and market value of premium green teas. Kerone Engineering Solutions designs industrial green tea drying systems with these constraints at the engineering centre, using multi-stage drying configurations, heat pump dryer technology, and precision temperature management to deliver green tea of outstanding colour, aroma, and nutritional integrity.
Why Choose Kerone Green Tea Drying Systems
Kerone Engineering Solutions has developed specific expertise in green tea processing for the Chinese, Japanese, Indian, and emerging African green tea markets, and understands the distinct quality parameters and buyer expectations of each market segment. Chinese steamed green tea requires drying conditions that preserve the intense jade-green colour and fresh oceanic umami aroma characteristic of grades like Gyokuro and Sencha; Indian pan-fixed green teas require conditions that develop characteristic light grassy-nutty notes without browning; African green teas for the export health food segment require maximum catechin preservation. Kerone’s engineering team translates these quality requirements into specific drying system designs, using heat pump dryers for the most premium, temperature-sensitive grades, multi-pass belt dryers with carefully profiled temperature curves for mid-range green teas, and continuous vibro-fluid bed systems for high-throughput orthodox green tea production.
Types and Features of Green Tea Drying Systems
Kerone’s green tea drying system portfolio includes heat pump dryers operating at 40–55°C for premium single-origin and organic green teas, multi-pass forced convection belt dryers with temperature-profiled zones from 80°C at first pass down to 55°C at finishing for orthodox production volumes, and tunnel dryers for large-scale Chinese-style green tea factories. The heat pump dryer approach is particularly significant for green tea because the low-temperature drying environment preserves theanine, catechins (particularly EGCG), chlorophyll, and high-volatility aromatic esters that are progressively destroyed above 60°C product temperature. Kerone’s heat pump drying systems for green tea achieve a Coefficient of Performance (COP) exceeding 3.5, delivering energy-efficient drying at a fraction of the operating cost of conventional low-temperature drying alternatives.
Key Features
Heat pump dryer system for premium green tea drying at 40–55°C, preserving catechins, chlorophyll, and delicate aromatic compounds
Multi-zone temperature profiling in belt dryers from high-temperature initial pass through graduated finishing stages
Low-oxygen option with nitrogen or CO2 inert gas blanketing for ultra-premium green tea with enhanced catechin preservation
Stainless steel food-grade construction with mirror-polished belt surfaces to prevent colour transfer contamination
Precise humidity control in the drying chamber to manage moisture equilibration and prevent surface case-hardening
COP > 3.5 in heat pump configurations, delivering significant operating cost advantage versus conventional low-temperature drying
Gentle tea leaf handling with low-impact belt transfers and vibro-conveyor advancement to prevent mechanical green leaf damage
Automated drying recipe management with programmable temperature, humidity, and belt speed profiles for each green tea grade
Powered by AI, ML & IoT
Future-Ready Engineering Driven by AI & IoT
Our advanced AI, ML, and IoT technologies, this solution delivers smarter automation, real-time insights, and predictive intelligence to enhance efficiency and drive future-ready growth.
Real-Time Monitoring & Control
Continuous tracking of process parameters with instant adjustments.
Predictive Maintenance
Intelligent fault detection to prevent failures before they occur.
Adaptive Process Optimization
Dynamic tuning of operations for maximum output and efficiency.
Cloud Dashboards & Analytics
Unified access to real-time insights and performance trends.
Energy & Resource Savings
Smarter utilization of energy to cut costs and reduce waste.
Secure IoT Connectivity
Encrypted data flow with seamless integration across plant systems.
Applications of Green Tea Drying Systems
Kerone’s Green Tea Drying Systems are extensively used in green tea estates, specialty tea factories, and health food ingredient manufacturers. Typical applications include:
Premium steamed or pan-fixed Japanese-style green tea (Sencha, Gyokuro, Matcha pre-drying) with maximum colour and aroma preservation
Indian Darjeeling and Nilgiri green tea drying for domestic and international health tea market segments
Chinese green tea factory production for export grades including Dragonwell, Bi Luo Chun, and Gunpowder styles
Organic certified green tea drying in temperature-controlled low-oxygen environments for premium health food brands
Matcha precursor (Tencha) drying prior to deveining and fine milling for ceremonial-grade matcha production
Green tea extract and green tea powder ingredient drying for nutraceutical, cosmetic, and functional food ingredient applications
Seamless Export Connections Global & Local
Our Global Footprint in Industrial Excellence
Delivering world-class industrial and process solutions across countries with precision, innovation, and reliability.
Peru
Chile
Argentina
Mexico
Colombia
Brazil
USA
Canada
United Kingdom
France
Germany
Spain
Italy
Netherlands
Sweden
Switzerland
Poland
Portugal
Ireland
Czechia
Romania
Hungary
Austria
Greece
Kazakhstan
Uzbekistan
Turkmenistan
Algeria
Egypt
Nigeria
Kenya
South Africa
Saudi Arabia
UAE
Israel
Russia
India
China
Japan
South Korea
Thailand
Vietnam
Malaysia
Singapore
Indonesia
Philippines
Australia
New Zealand
Pan-India Presence. Local Expertise.
Raipur
Bilaspur
Panaji
Vasco da Gama
Gandhinagar
Ahmedabad
Surat
Chandigarh
Gurgaon
Shimla
Manali
Bengaluru
Mysore
Kochi
Pune
Mumbai
Thane
Navi Mumbai
Hyderabad
Chennai
Coimbatore
Kolkata
Lucknow
Jaipur
Udaipur
Jodhpur
Dehradun
Haridwar
Bhubaneswar
Product Gallery
Frequently Asked Questions (FAQ)
Heat pump dryers operate at 40–55°C drying air temperature, well below the degradation threshold for catechins, chlorophyll, and volatile aroma compounds in green tea. This preserves the colour, health benefit compounds, and fresh aromatic character that command premium pricing.
Epigallocatechin gallate (EGCG) is the primary bioactive catechin in green tea, associated with antioxidant, anti-inflammatory, and metabolic health benefits. It begins to degrade above approximately 60°C. Kerone's low-temperature drying systems are specifically designed to maximise EGCG retention in the finished product.
Chlorophyll is the pigment responsible for green tea's characteristic green colour. Chlorophyll degrades to pheophytin (brownish-olive colour) under heat. Kerone's temperature-controlled drying systems minimise chlorophyll degradation, preserving the bright jade-green colour that commands top auction prices.
For premium green tea grades, Kerone designs systems to maintain product temperature below 55°C throughout the drying cycle. For mainstream green tea grades, product temperatures up to 65°C in the initial drying stage are permissible before transitioning to finishing at lower temperatures.
Kerone's heat pump dryer systems for green tea achieve a COP of 3.5–4.2 depending on the operating temperature and ambient conditions, meaning 3.5–4.2 kJ of drying energy is delivered per kJ of electrical energy consumed, making them highly energy-efficient versus resistance or gas-heated low-temperature alternatives.
Heat pump dryers are commercially viable for medium-to-large green tea operations. For very large-scale production where maximum throughput is the priority, Kerone offers hybrid systems combining a heat pump finishing stage with a moderate-temperature primary belt dryer.
Tencha is steamed and dried flat on belt dryers without rolling, producing a flat leaf structure that is subsequently deveined and milled. Kerone's Tencha dryers use low-velocity horizontal airflow to prevent leaf distortion and temperatures below 65°C to preserve the deep colour and umami character required for ceremonial matcha.
Typical bed depths are 30–60mm with belt speeds of 0.3–0.8 m/min, adjusted based on inlet moisture and target final moisture. Kerone provides adjustable feed gates and variable-speed drives to allow operators to optimise these parameters for each tea grade and flush season.
Nitrogen blanketing is commercially used for ultra-premium green tea and matcha precursor production where oxygen exclusion maximises catechin and chlorophyll preservation. The higher capital and operating cost is justified by the premium value of the product in these applications.
Kerone's drying chamber humidity control systems maintain dew point below the tea leaf surface temperature at all points in the drying path, preventing condensation that would cause uneven drying, colour spotting, and microbial contamination risks.
Multi-pass belt dryers for green tea typically provide total residence times of 30–50 minutes across the complete drying sequence from 60% inlet moisture to 3–5% final moisture, with the residence time distributed across high-temperature and low-temperature zones.
Yes. Kerone's stainless steel, non-reactive construction, documented cleaning procedures, and absence of lubricant or chemical contact with product surfaces are compatible with organic certification requirements under EU, USDA, and other regulatory frameworks.
Heat pump dryer compressor and fan units operate at 68–78 dB(A) at 1m distance. Kerone provides acoustic enclosures on compressor units for installations in noise-sensitive environments or where worker occupational exposure limits require noise mitigation.
Kerone provides application support at the beginning of each flush season, including remote monitoring review, parameter adjustment recommendations based on incoming green leaf analysis, and in-person process audits for factories under service contracts.
Kerone's dryer control systems log all critical process parameters (temperatures, belt speed, humidity, throughput) with time-stamped batch records that can be integrated with factory QMS systems to provide full process traceability documentation for export certification and buyer audits.
Kerone’s custom-designed heating and processing solutions are built to meet the demands of your growing operations. Whether you’re upgrading equipment, expanding production, or need a tailor-made solution
Peru
Chile
Argentina
Mexico
Colombia
Brazil
USA
Canada
United Kingdom
France
Germany
Spain
Italy
Netherlands
Sweden
Switzerland
Poland
Portugal
Ireland
Czechia
Romania
Hungary
Austria
Greece
Kazakhstan
Uzbekistan
Turkmenistan
Algeria
Egypt
Nigeria
Kenya
South Africa
Saudi Arabia
UAE
Israel
Russia
India
China
Japan
South Korea
Thailand
Vietnam
Malaysia
Singapore
Indonesia
Philippines
Australia
New Zealand
