the fluidized bed granulation (spray liquid) is a method for making free-flowing granulate from liquids. Fluid bed granulation can be Used in different applications in various industries, since the product Properties can be varied in many ways by setting process technical parameters and configurations. the granules that maked by the fluid bed granulator Machinery are suitable for making tablets, and the granules also for final Coating by the fluid bed coating machine.

Many industrial applications require converting liquid Substances into a stable product form with exactly defined properties whether For further processing as a solid for Pharmaceutical, food products, animal Feed or cleansing agents, for increasing stability in chemical substances or For handling thermally sensitive products such as enzymes, proteins or Micro-organisms. Spray granulation in the fluidized bed permits liquids to be Directly made into free-flowing granulate with specific product properties. Generally, the granules also have instant properties.

Fluidized Bed Granulator Introduction

Hywell machine Fluidized bed granulator Machine use the liquids containing solids, such as solutions, suspensions or Melts, are sprayed into a fluidized bed system. Due to the high heat exchange the aqueous or organic solutions evaporate immediately, and the solids form Small particles as starter cores. these are sprayed with other liquids which in Turn, after evaporation, form a hard coating around the starter core.

this step is continuously repeated in the Fluidized bed so that the granulate grows layer by layer like an onion. Alternatively, a defined volume of suitable starter cores can be provided. In this option, the liquid only serves as a vehicle for the solids that are being Applied.

this process variant is often used in a Continuous fluidized bed system with air-classifying discharge. through the Continuous removal of the finished granules from the drying room, the amount of Particles in the fluidized bed remains constant.

the granules can be very dense because they Have grown in layers, and are thus resistant to abrasion. Parameters such as Particle size, residual moisture and solids content can be specifically adapted in order to achieve the most varying product properties. Using spray granulation, Medium-sized particles of 50 micrometers to 5 millimeters can be produced.

Fluid Bed Spray Granulator Description

Heated and purified air flows into the column by suction fan, the pellet or powder will be in uniform fluid condition inside the column, use one set of filter bags to prevent leak of powder, discharge the Evaporated water to get draying purpose. If add one more spray gun can spray the binder or active ingredient downward into the uniform fluid powder, Whenever the powder combined in granule will be dried to get the required Moisture content.

Top Spray Granulator: the top-spray Granulator agglomerates finer particles into larger, free flowing granulates in A one-pot process. Ingredients are mixed and preheated by an upward flow of Heated air. Granulation occurs by spraying liquid into the fluidized powder. the granules are subsequently dried with heated air. the top-spray granulator Can also be used for top-spray coating, layering from liquids and instantizing. Special features include a selection of air distributors and one-pot Processing.

Drying of Fluid bed spray granulator: Warm Air is blown through a perforated distributor to rapidly and gently dry the Formulation until the required residual moisture content is reached. Moisture Evaporated from the product is exhausted with the drying air. Special features Include a selection of air distributors and short processing times.

with fluid bed systems, safety always must be Considered as the highest priority. Due to static charge of the product, there Always remains the risk of an explosive environment within the fluid bed Chamber. The safety risk is heightened when solvents are used as the binding Solution. Hywell machinery designs fluid beds to an over-pressure  and the explosive situation (correctly termed " deflagration" ) is contained within the fluid bed chamber. Hywell machinery Also offers a vented design, which safely directs the over-pressure situation to an open, safe place.

Fluid Bed Granulation Structures

1. Inlet air system

the inlet air system consists of Primary Filter, Intermediate filter, high temperature high efficiency filter(H13 )and Heater with accurate temperature control. the inlet air flow, speed and Pressure is variable and controllable. for the heater of Fluid bed granulation, Fluidized Bed Granulation can be steam radiator or electrical heater.

2. Main Body Structure

the main body structure of fluid bed spray Granulator consists of bottom bowl, movable product bowl with trolley, Fluidized chamber, expansion chamber/filter housing. the bottom bowl, product Container and fluidized chamber are inflatable silicon gasket sealed with Compress air inspection sensor to assure the reliable sealing.

3. Product Filter

the double structured bag filter in two Pieces (in case request, stainless steel filter available) is inflatable Silicon gasket sealed between the expansion chamber inner surfaces with Compress air inspection sensor to assure the reliable sealing or fix cloth bag On the middle chamber to replace the inflatable the gasket seal.

Fluid Bed Granulator Specifications

Model		unit	15	30	60	120	200	300	500
Tank	Volume	L	45	100	220	420	670	1000	1500
	Diameter	mm	550	700	1000	1200	1400	1600	1800
Load capacity	Min	Kg	10	15	30	80	100	150	250
	Max	Kg	20	45	90	160	300	450	750
Air volume	Air volume	M3/h	1400	1800	3000	4500	6000	7000	8000
	Air pressure	Mm H2o	480	480	950	950	950	950	950
	Power	Kw	5.5	7.5	11	18.5	30	37	45
Steam consumption		Kg/h	42	70	141	211	282	366	451
Compressed air Consumption		M3/Min	0.3	0.6	1.0	1.0	1.2	1.5	2.0
Weight		Kg	900	1000	1100	1300	1500	1800	2500
Size (LWH)		M	1.250.9 2.5	1.61.1  2.5	1.851.4 3	2.21.65  3.3	2.341.7 3.8	2.82 4.5	32.25  5.0
1.Hywell machinery reserves the right to the design without notice 2.All specifications are as accurate as is Reasonably possible, but they are not binding.

Fluid Bed Granulators Construction Material

Hywell Machinery are able to offer our FL Series fluid bed granulators with contact part to be built in SS304, SS316L, Titanium, Duplex stainless steel, etc. for the control system of fluid bed Granulators, Hywell machinery have choices on push button, PLC+HMI and so on, and for the main electrical components of the super mixer granulator , it can  choices the famous brand that Such as ABB, Siemens or Schneider or others.

how do the Fluidized Bed Granulator Works

in a Hywell machinery FL series fluidised bed granulator, the powder granule in vessel (fluid bed) appears in the state of fluidization. It is preheated and mixed with clean and heated air. At the same time the Solution of adhesive is sprayed into the container. It makes the particles Become granulating that contains adhesive. Being of unceasing dry through hot Air, the moisture in the granulating is evaporated. the process is carried out Continuously. Finally it forms ideal, uniform and porous granules.

Fluidised bed granulator is mainly used for the Operations of mixing, granulating, drying of granule "Top Spraying", Etc of powder material in pharmaceutical industry, foodstuff industry, chemical Industry, etc. Such as granule of tablet, granule for quick resolving drinking, Condiment.

Fluid Bed Dryer Granulator Advantages

Hywell machinery FL series fluid bed dryer Granulator had the following advantages over conventional solutions.

1. Adopting multi-fluid nozzle, it guarantees that the formed granule is uniform and the content of powder is very low.

2. Complete discharge and easy cleaning

3.Highly polished inner and outer surfaces of the barrel, no dead comer, easy to discharge materials, easy to clear, no cross Contamination.

4. the fluid bed granulator have enclosed Structure, without overflow of power dust

5. the fluid bed granulators have smooth Running, reliable performance, easy operation.

6. the loading and unloading are quick, light and clean, meet the requirements of GMP.

7. the fluid bed granulating machine have the Explosion release vent on the machine. Once the explosion happened, the Machine will release the explosion to outside automatically and safely,it will Make very safe condition to the operator.

8. for the loading materials, we have choices on vacuum feeding, lifting feeding, negative feeding and manual feeding for customer .

9. this machine adopts PLC automatic control, All the operation according to the requirements of the user to set the process Parameters automatically, it can print all the process parameters (optional), the original record is true and reliable. In full compliance with the GMP Requirement of pharmaceutical production.

10. for the bag filter, we choose anti-static Filtering cloth. Adopting double chamber filtering bags system, remove dust Completely.

11. for the machine, we have CIP for customer To choose (Optional).

12. the processes of mixing, granulating and Drying are completed in one step inside the machine.

Fluidized Granulator Application:

the FL series fluidized granulator is widely used in Pharmaceutical, chemical, foodstuff and electronic industries

1.    Western medicine

Granulating and drying before tableting.

2.    Chinese medicine

Granulating and drying of concentrated Granule.

3.    Food

Granulating and drying of instant food, Instant health food, coffee, cocoa, milk powder, fruit flavor powder, Seasoning.

4.    Chemical

Granulating and drying of pigment, dye, Synthesis raw material.