EAC Instant Tea Industrial Coffee Spray Dryer With Heat Recovery System

Instant Tea production line

DESCRIPTION

XIANDAO ‘s Instant Tea Production Line (Instant black tea production line) has high quality performance .
The extractor with three or four extraction tanks in serious will give outlet solution with solid contents of around 6-12%. This solution contains some fiber inside. Then the disc separator will separate the fiber.
If cold water soluble instant tea is required, the disc separator will also separate most tea oil. Depend on the customer’s requirements; it could be one disc separator for dual application (two phases and three phases separation) or two disc separators separately.
The separated solution will then be concentrated by the evaporator. The solid contents after evaporator is normally around 30-45% (depends on the type of tea).
The concentrated tea will then be dried into tea powder with the spray dryer. Pressure spray dryer will give bigger particle, and instant soluble tea.
If the required product size is bigger, such as 1 or 2 mm, a fluid bed granulator is provided on request.

Description Of The Plant

ⅰ. Extraction tank
Our extraction tank are widely applicable for pharmaceutical , healthy food, instant drinks, and chemical industries. Our special design provides high working efficiency, and convenient operation. WIP (washing in place) section is available on request.
With multi-units of extraction tanks in series, we could have the extraction process semi-continuous, and extract most of the ingredients from the raw material.
Some special tea requires special design to retain the aroma. We have the design to extract the aroma and separate it for further process.

ⅱ. Disc Separator (dual applications)

Disc Separator is a kind of purification equipment used in the biotechnology, pharmaceutical, pigment, foodstuff, oil, petrochemical, and dairy industries to separate the mixture of “liquid -- liquid and solid – liquid” in different proportion.
There’re very low percentage fibers or ash in the extract. To make sure the final product could be 100% solved, we suggest disc separator to take out the impurities.
To make cold water soluble tea, we should also separate the tea oil. It could be one separator to separate the oil and insoluble impurities, or two separators separately. Some customer also requires further separator to refine the tea oil.

ⅲ. Concentrator

Multi-stage Vacuum concentrator

We normally suggest multi-effects falling film evaporator to concentrate the extract before spray dryer. It saves energy by utilizing the steam repeatedly. The condensing heat can also be recovered, if the vapor from the front effect is compressed to higher pressure. The saturated steam temperature corresponding to the pressure is also higher and the vapor can be reused for heating. Steam jet vapor compressor is used under this principle.
The jet compressor is operated at a very high velocity and has no movable parts. The structure is simple and the operation reliable.
Every effect of falling-film evaporator has an upper distribution system. The liquid flows downwards in each tube uniformly, forming a cylindrical hollow thin liquid layer, the vapors flow axially downwards.
The concentrated product is separated from the vapors in two steps, firstly to the lower end by gravity, and secondly by a high efficient cyclone separator. The clean vapors are then used to heat the next effect, or condensed (last effect).
There also freezing concentrators. But the powder consumption is very high, so the application is not wide.

ⅳ. Spray Dryer
To have good solubility, we normally suggest pressure spray dryer for this application.
The concentrated solution should be fed into the drying tower by high pressure homogenizing pump, and then sprayed into fine beads. Filtered and heated air flows into the drying tower through hot air distributors, and will dry the liquid fine beads very fast. The dry product will be collected at the bottom of the spray dryer, and fines to be collected in the cyclones.
Our special design will guarantee the quality of the product and reduce the energy consumption.

But if you want to get instant granule tea product, then we would recommend strongly the PFSD Series Multi-stage Precision Fluidized Bed Spray Dryer (Continuous Production).

PFSD-760 Series Multi-stage Precision Fluidized Bed Spray Dryer

(Continuous Production).

Also the following FL Series Fluid Bed Granulator ( Small Size Batch Production) is for users’ choice.

Fluid bed granulator:

When bigger product particle size is required, we suggest fluid bed granulator which could produce particles of around 1 to 2 mm.

In the granulator, fine instant tea powder is loaded in a product container, and fluidized by heated and filtered air. Liquid tea extract or any other flavor are sprayed onto the fluidized power to make granules.

ⅴ. Heat recovery system
The brew tea leaves might be used as the fuel of the system. But the original brew tea leaves are wet, not easy to be combusted. So we press the tea leaves first, and then utilize the hot air from the drying tower and the heat of flue gas to dry the tea leaves before feed them to hot air furnace or boiler.
ⅵ. Other parts
To have the plant run smoothly, we also configure some sedimentation tanks, buffer tanks, and other storage tanks for the system.
WIP (Washing In Place) system is provided on request.

Overall flow chart:

Jiangsu Xiandao Drying Sci-Tech Co. Ltd. Is located in the hinterland of the birthplace of the world-famous Chinese modern township enterprises.---Water Land in the South of Yangtze River. Behind her lies the Jiaoxi Town, a thousand-year-old town in Changzhou City. It is a well-known "Home of Fish and Rice", and an even more veritable bright pearl, who is currently applying for the award of world intangible cultural heritage! When you stand here and look around, you will feel picturesque, vibrant , and full of poetry and painting. The traffic here is very convenient, and the modern development of various undertakings is flourishing. Not only is the industry developed, the service industry is advanced, but also the culture is profound, and the tourism is very rich in resources, and more and more tourists from all over the world are choosing here as tourist destinations. In short, this is a rare and good place. We believe that if you are fortunate enough to walk here, it will bring you unforgettable memories, reduce the fatigue caused by your busy business work, and accompany you to relax and enjoy a pleasant journey!

Our company is a global procurement and global manufacturing custom-made engineering company. The main users are distributed in various industries/fields of food, pharmacy, chemical industry, environmental protection and new materials. At present, we have established long-term partnership with some important suppliers at home and abroad. (For example, Germany SIEMENS , USA Honeywell, Italy Riello, APV Company, Germany Netzsch, Germany Feluwa, etc.), so that we can provide professional technical services for customers at home and abroad. The company has more than 250 in-service/ at-work employees, with an annual turnover of about 22 million US dollars.

Our solemn promise

Detailed project technical proposal, complete engineering construction plan, strong technical strength support, and experienced, professionally qualified and service-efficient work team have laid a solid foundation for the successful implementation of turnkey engineering projects for large-scale spray drying plants at home and abroad.

We can ensure that our customers can successfully run the entire plants, obtain satisfactory products, ensure risk reduction, and save time for users' products to be put on the market as soon as possible.
Looking to the future, based on our feet, our pioneers are firmly and vigorously running towards the goal of "precise and stronger spray drying and granulation engineering", continue to develop and improve, and continue to write a brilliant chapter.