{"id":784,"date":"2020-06-23T16:39:09","date_gmt":"2020-06-23T14:39:09","guid":{"rendered":"https:\/\/p596724.mittwaldserver.info\/fluidised-bed-and-spray-drying-technologies\/spruehgranulation-formt-partikel-nach-wunsch\/"},"modified":"2024-07-01T14:18:07","modified_gmt":"2024-07-01T12:18:07","slug":"spray-granulation","status":"publish","type":"page","link":"https:\/\/inprotec.de\/en\/processes-and-technologies\/spray-granulation\/","title":{"rendered":"Spray Granulation"},"content":{"rendered":"

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Starting materials:<\/strong>\u00a0\u2022 Watery solutions \u2022 emulsions \u2022 suspensions \u2022 waxes \u2022 meltable raw materials (in the form of melts, melt emulsions and melt suspensions)<\/p>\n

[\/vc_message][vc_column_text css=””]Spray granulation<\/strong> is a process used in fluid bed technology<\/strong> that enables the conversion of liquid substances into free-flowing granules. In the fluid bed granulator<\/strong>, the liquid is finely atomised and sprayed onto a carrier material, whereby solid granules are gradually formed.<\/p>\n

Fluid bed granulation for customised product properties<\/h2>\n

Spray granulation<\/strong> allows the targeted adjustment of granule size and other important properties such as porosity, density, and surface texture. This enables us at inprotec to respond perfectly to your individual requirements and supply you with customised granules for your application.[\/vc_column_text][vc_custom_heading text=”Process” use_theme_fonts=”yes” css=”.vc_custom_1643207710538{margin-bottom: 15px !important;}”][vc_column_text]Before the actual spray granulation begins, we can mix, disperse, emulgate, heat, cool and, if necessary, neutralise or carry out simple chemical transformation reactions on either solid or liquid starting materials in our fluidized bed plants or additional equipment. Then, raw materials and initial products for the granulation are transformed into a liquid and therefore atomizable form.[\/vc_column_text][\/vc_column][\/vc_row][vc_row full_width=”stretch_row” css=”.vc_custom_1593595465854{background-position: center !important;background-repeat: no-repeat !important;background-size: cover !important;}”][vc_column width=”1\/2″][vc_single_image image=”244″ img_size=”full”][\/vc_column][vc_column width=”1\/2″][vc_column_text el_class=”legend”]<\/p>\n

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  1. fluidized bed<\/li>\n
  2. spray solution<\/li>\n
  3. granulate discharge<\/li>\n
  4. inlet air<\/li>\n
  5. exhaust air<\/li>\n
  6. sifter air<\/li>\n
  7. sifter outlet<\/li>\n<\/ol>\n

    [\/vc_column_text][\/vc_column][\/vc_row][vc_row full_width=”stretch_row” parallax=”content-moving” parallax_speed_bg=”3″ css=”.vc_custom_1593603791395{margin-bottom: 50px !important;background-position: 0 0;background-repeat: no-repeat !important;}”][vc_column][vc_column_text css=””]The fluidized bed granulation principle is shown in the schematic diagram above. In this process, the liquid (2)<\/strong> is atomized into ultra-fine droplets (diameter: 20\u201350\u00a0\u00b5m) by several two-material nozzles. The droplets enter the air stream (4)<\/strong> of the fluidized bed unit and dry instantaneously due to the direct and intensive heat exchange. The moist air is discharged (5)<\/strong> through the top of the unit. The fluidized bed drying initially produces minute particles \u2013 the so-called germs. These are held in suspension in the fluidized bed (fluidization, 1). Continuously atomized droplets adhere to their surface and dry so that a so-called onion structure or snowball structure builds up. The particles are discharged from the process (3)<\/strong> and; at the same time, are classified in a sifter (6)<\/strong> so that coarse particles are discharged (7)<\/strong> and fine particles are fed back into the process chamber to allow their continuous build-up to a certain particle size. The classifying discharge allows particles to be removed from the reactor flexibly, continuously and without interrupting the drying process. Particles sizes between 200 and 5,000\u00a0\u00b5m can be set freely. The fluidized bed spray granulation therefore unites the drying with a precisely definable particle formation.<\/p>\n

    In the spray granulation, the particles are enveloped with several layers of the spray material so that the process is also known as build-up granulation. If several materials are sprayed at the same time, the so-called co-granulation is performed. Generally, the starting materials and the process conditions in the spray granulation processes can be configured in such a way that various particle morphologies with different properties and characteristics can result. Thanks to their often round shape, the granulates are ideal for subsequent coating<\/a>.[\/vc_column_text][\/vc_column][\/vc_row][vc_row full_width=”stretch_row” parallax=”content-moving” parallax_image=”173″ parallax_speed_bg=”3″ css=”.vc_custom_1591798557190{background-position: center;background-repeat: no-repeat !important;background-size: cover !important;}”][vc_column][vc_single_image image=”235″ img_size=”full” alignment=”center” css_animation=”fadeInUp”][\/vc_column][\/vc_row][vc_row css=”.vc_custom_1643199070435{margin-top: 30px !important;margin-bottom: 100px !important;}”][vc_column][vc_custom_heading text=”Advantages of spray granulation:” use_theme_fonts=”yes” css=”.vc_custom_1719836291230{margin-bottom: 15px !important;}”][\/vc_column][vc_column width=”1\/2″ css=”.vc_custom_1591800769781{padding-top: 0px !important;padding-bottom: 0px !important;}” el_class=”prolist”][vc_column_text css=””]<\/p>\n