紅茶烘乾機

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%.

什麼是紅茶烘乾機？

紅茶烘乾機是一種專為烘乾發酵紅茶而設計的熱風循環設備。茶葉均勻攤放在托盤上，通過可控的熱風逐步脫水，實現穩定高效的烘乾

與傳統的日曬或手工烘焙方法相比，紅茶烘乾機具有明顯優勢：

• 可控溫度，受環境影響較小
• 批次處理以提高產量效率
• 穩定品質，適合標準化生產
• 降低勞動成本和對經驗的依賴

技術規格

參數	規格	客戶價值
型號範圍	SL-2至SL-24	8 models from 300–8,000 kg for precise capacity matching
乾燥方法	空氣源熱泵	70% energy savings versus electric heating; zero combustion emissions
溫度範圍	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
批次容量	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
托盤材料	304 stainless steel (perforated)	Food-grade, corrosion-resistant, easy to clean
Chamber Construction	Galvanized steel or SUS304	75 mm rock wool insulation; durable frame
控制系統	PLC with HMI touchscreen	Automated profiles reduce labor and human error
最终水分	3–5%	Optimal for grading, packaging, and 24-month storage
耗電量	3–36 kW (model dependent)	Low operating cost; suitable for rural tea estate power supply
保溫	75毫米高溫岩棉	20% energy efficiency improvement over uninsulated chambers

Model Selection Guide

型號	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?

紅茶烘乾機 採用熱風循環系統，讓加熱空氣在烘乾室內均勻流動。持續的氣流將水分從茶葉中帶走，實現可控的烘乾效果

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. 分段溫度控制烘乾

• 初烘（80–90°C） 快速去除表面水分，防止葉片粘連
• 主要烘乾（90–105°C） 均勻脫水，固定香氣和風味結構
• 終末烘乾（70–85°C） 穩定水分含量，且不損失香氣

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.

使用紅茶烘乾機的主要優點

紅茶烘乾機適用場景

紅茶烘乾機廣泛用於：

• 加工整葉紅茶與碎紅茶（CTC）
• 小型至中型茶廠的紅茶生產
• 出口導向型紅茶加工企業
• 標準化和大規模的紅茶生產線

如何選擇合適的紅茶烘乾機？

選擇 紅茶烘乾機時，建議重點關注：

• 所需批次或每小時處理能力
• 可用的熱源類型
• 車間空間與布局
• 當地溫度與濕度條件

選擇合適的型號不僅能提高烘乾效率，還能有效降低能耗和運營成本

如何製作紅茶？

採摘

• 選擇嫩葉，帶一芽一兩葉，以確保原料品質

萎凋

• 利用自然攤放或溫度與濕度控制的萎凋室來降低水分並軟化葉子，為揉捻和發酵做準備

揉捻

• 破壞葉細胞以釋放汁液，形成條狀或碎葉，促進多酚氧化

發酵

• 在適宜的溫度和濕度下，將葉子完全發酵，從綠色轉變為紅色，並發展出紅茶的獨特香氣和風味

烘乾

• 使用烘乾室或熱風烘乾機停止發酵，將水分降低至≤5%，並固定香氣和風味

分級

• 根據葉條、碎葉和外觀進行篩選，以確保均勻性和穩定品質

包裝

• 封存已烘乾和分級的茶葉，防止水分和異味，便於存儲和運輸

舒利提供不銹鋼和標準材質的紅茶烘乾機，皆可定制。如需更多資訊，歡迎聯繫我們

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.