The black tea drying machine is a closed-chamber batch dryer designed to stop fermentation and reduce moisture in fully oxidized black tea leaves. It processes 300–8,000 kg of fermented tea per batch. Freshly fermented leaves enter at 55–65% moisture. The system reduces this to 3–5% within 2–4 hours. Dried black tea is ready for grading, sorting, and packaging for domestic sale or export.
Conventional charcoal-fired dryers run at 100–120°C with no humidity control. This black tea dryer operates at 70–105°C in a sealed chamber with ±1°C temperature precision. The heat pump recycles thermal energy from exhaust air. It delivers a COP of 3.0–4.0. Electricity consumption drops by 60–70% compared to direct electric heating. A PLC touchscreen lets operators program multi-stage drying profiles. Chamber temperature stays within ±1°C. Relative humidity stays within ±3%. The 2–4 hour cycle enables 4–6 batches per day during peak harvest.
Shuliy has manufactured industrial drying equipment for over 20 years. The company has exported heat pump dryers to more than 30 countries. All chambers use 304 stainless steel trays. Housing options include galvanized steel and SUS304. The system meets EU and FDA food-contact material standards. A 12-month warranty covers all mechanical and electrical components. Lifetime technical consultation is included.
Why Must Black Tea Be Dried?
After full fermentation, black tea leaves still contain 55–65% moisture and active enzymes. Without timely and controlled drying, quality deteriorates rapidly.
- Over-Fermentation: Enzymatic activity continues. The tea develops a sour, overripe flavor. Astringency increases. Market grade drops.
- Color Degradation: Uncontrolled moisture causes uneven oxidation. Leaf color turns dull brown instead of the desired dark amber. Buyers reject discolored batches.
- Mold Growth: Moisture above 8% creates ideal conditions for Aspergillus and Penicillium mold. Aflatoxin contamination becomes a food safety risk.
- Aroma Loss: Volatile aromatic compounds evaporate unevenly. The characteristic malty, floral, or fruity notes fade. Tea loses its premium classification.
The Shuliy black tea drying machine solves these problems through staged temperature control. A three-phase drying profile stops fermentation at the optimal point. Moisture draws evenly from each leaf. Aroma compounds are locked in. The final product reaches 3–5% moisture with batch uniformity within ±0.5%.
什么是黑茶烘干机？
黑茶烘干机是一种专门为干燥发酵黑茶而设计的热风循环设备。茶叶均匀摊放在托盘上，通过可控热风分阶段脱水，达到稳定高效的干燥。
与传统日晒或手工焙炒相比，黑茶干燥机具有明显优势：
- 可控温度，受环境影响较小
- 分批处理以提高生产效率
- 稳定质量，适用于标准化生产
- 降低人工成本和对经验的依赖
技术规格
| 参数 | 规格 | 客户价值 |
|---|---|---|
| 型号范围 | SL-2至SL-24 | 8 models from 300–8,000 kg for precise capacity matching |
| 干燥方法 | 空气源热泵 | 70% energy savings versus electric heating; zero combustion emissions |
| 温度范围 | 30–110°C (adjustable) | 70–105°C optimal for black tea; stops fermentation without scorching |
| Control Precision | ±1°C temperature; ±3% RH humidity | Prevents over-drying and under-drying within the same batch |
| 批量容量 | 300–8,000 kg fermented tea | Scales from small tea estate to industrial export volume |
| Drying Cycle | 2–4 hours/batch | 4–6 batches per day during peak harvest season |
| 托盘材料 | 304 stainless steel (perforated) | Food-grade, corrosion-resistant, easy to clean |
| Chamber Construction | Galvanized steel or SUS304 | 75 mm rock wool insulation; durable frame |
| 控制系统 | PLC with HMI touchscreen | Automated profiles reduce labor and human error |
| 最终湿度 | 3–5% | Optimal for grading, packaging, and 24-month storage |
| 能耗 | 3–36 kW (model dependent) | Low operating cost; suitable for rural tea estate power supply |
| 绝缘 | 75毫米高温岩棉 | 20% energy efficiency improvement over uninsulated chambers |
Model Selection Guide
| 模型 | Dimensions (mm) | Drying Crews | 容量（公斤/批） |
|---|---|---|---|
| SL-2 | 4,000 × 1,860 × 2,500 | 2 | 300–600 |
| SL-4 | 6,000 × 1,860 × 2,500 | 4 | 500–1,000 |
| SL-6 | 7,200 × 2,300 × 2,500 | 6 | 800–1,500 |
| SL-8 | 8,500 × 2,300 × 2,500 | 8 | 1,000–2,000 |
| SL-10 | 10,000 × 2,300 × 2,500 | 10 | 1,200–2,500 |
| SL-12 | 8,500 × 3,300 × 2,500 | 12 | 2,500–4,000 |
| SL-18 | 8,500 × 5,000 × 2,500 | 18 | 4,000–6,500 |
| SL-24 | 12,000 × 5,000 × 2,500 | 24 | 5,000–8,000 |
How Does the Black Tea Dryer Work?
The black tea dryer 使用热风循环系统，热空气在干燥腔内均匀流动。这一连续气流从茶叶中去除水分，实现受控干燥。
1. Evaporation Stage
Ambient air passes across the evaporator coil. Refrigerant absorbs thermal energy. The air is pre-cooled.
2. Compression Stage
The compressor raises refrigerant temperature and pressure. A high-grade heat source is created.
3. Condensation Stage
Hot refrigerant circulates through the condenser coil inside the drying chamber.
Circulated air heats to the setpoint temperature of 70–105°C.
4. Dehumidification Stage
Warm, moist air passes over the evaporator coil.
Water vapor condenses into liquid. The condensate drains from the system.
The dry air is reheated and recirculated.
5. Control Stage
PLC sensors monitor temperature, humidity, and airflow.
Compressor speed, fan velocity, and exhaust damper position adjust in real time.
The energy-recovery design produces 3–4 kW of usable heat per 1 kW of electrical input.
Conventional electric dryers produce only 1 kW of heat per 1 kW of input.
Black Tea Drying Process: Step by Step
1. Feeding and Spreading
- Fully fermented black tea leaves are evenly spread on drying trays or conveyor belts to ensure uniform heating.
2. Hot-Air Heating and Circulation
- The heating system (electric, gas, or biomass) heats the air, and fans circulate the hot air throughout the drying chamber to avoid local overheating.
3. 分阶段温控干燥
- 初步干燥（80–90°C） 迅速去除表面水分，防止叶片粘连。
- 主干燥（90–105°C）： 均匀脱水，固定香气与风味结构。
- 最终干燥（70–85°C）： 在不损害香气的情况下稳定水分含量。
4. Moisture Exhaust and Air Exchange
- Moist, hot air is expelled through the exhaust system while fresh air enters, maintaining a stable drying environment. The final moisture content is generally controlled at ≤5%.
5. Discharge and Cooling
After drying, tea leaves are discharged and cooled naturally or with assistance to prevent reabsorption of moisture.
使用黑茶烘干机的主要优点
均匀干燥
茶叶受热均匀，确保颜色与风味一致。
高效且可控的容量
适用于从小型茶厂到大规模生产。
多种热源选项
可使用电、气或生物质加热，适应当地能源条件。
易操作与维护
适用于连续生产和长期使用。
黑茶干燥机适用场景
黑茶干燥机广泛用于：
- 加工整叶黑茶和碎黑茶（CTC）
- 小到中型茶厂的黑茶生产
- 出口导向型黑茶加工企业
- 标准化的大规模黑茶生产线
如何选择合适的黑茶烘干机？
在选择 黑茶烘干机 时，建议关注：
- 所需批次或每小时处理能力
- 可用的热源类型
- 车间空间与布局
- 当地温湿条件
选择合适的型号不仅可以提高干燥效率，还能有效降低能源消耗和运营成本。
如何制作黑茶？
采摘
- 选取芽头健壮的一芽一叶或一二叶，确保原料质量。
萎凋
- 使用自然摊放或温度与湿度控制的萎凋室以降低水分并软化茶叶，为揉捻和发酵做准备。
滚揉
- 破坏叶细胞以释放汁液，形成条状或碎叶，促进儿茶素氧化。
发酵
- 在适宜的温度与湿度下充分发酵，使叶子从绿色转为红色，形成黑茶独特的香气与风味。
干燥
- 使用干燥腔或热风干燥机停止发酵，将水分降至≤5%，并固定香气与风味。
分级
- 按叶条、碎叶和外观分级，确保一致性与稳定质量。
包装
- 将干燥并分级后的茶密封，以防潮气和气味，便于储存和运输。
舒李提供多型号黑茶烘干机，材质为不锈钢及标准材质，均可定制。欲了解更多信息，请随时联系我们。
Solving Common Black Tea Drying Challenges
| Customer Pain Point | 舒利方案 | Result |
|---|---|---|
| Over-fermentation from slow drying | Staged temperature profile (80°C → 105°C → 70°C) | Enzymatic activity stopped within 20 minutes; flavor locked in |
| Uneven moisture causing mold in storage | 360° turbulent airflow and automated humidity exhaust | Batch uniformity within ±0.5% moisture deviation |
| Aroma loss from excessive heat | Final drying phase at 70–85°C with controlled exhaust | Volatile compound retention above 90%; premium grade maintained |
| High fuel costs from charcoal or biomass | Heat pump COP 3.0–4.0 with energy recovery | 60–70% reduction in drying energy cost per kg |
| Seasonal harvest peaks overwhelming capacity | Modular SL-series from 300–8,000 kg; 2–4 h cycles | 4–6 batches per day; multi-chamber expansion available |
| Export rejection due to moisture non-compliance | Precise 3–5% final moisture with PLC verification | Full compliance with ISO 3720 and buyer specifications |
Why Choose Shuliy Black Tea Drying Equipment?
- Proven Heat Pump Technology: Thousands of installed drying rooms across agricultural and food processing sectors. System reliability is validated in real-world conditions.
- Application-Specific Expertise: Drying protocols for orthodox whole-leaf, CTC, and broken black tea are pre-programmed into the PLC. Commissioning time is reduced. Operator training is simplified.
- Full Material Traceability: All stainless steel components carry mill test certificates. Chamber insulation meets fire-rating and thermal-conductivity standards for international export.
- Integrated Processing Lines: Shuliy supplies withering troughs, rolling machines, fermentation chambers, and grading sorters. Turnkey black tea processing projects are supported.
- Global Export Experience: CE-certified electrical systems. Multi-voltage compatibility (220V/380V/415V/460V). ISPM-15 compliant export packing ensures smooth customs clearance.