697
edits
Difference between revisions of "Belt Dryers"
Jump to navigation
Jump to search
no edit summary
| Line 7: | Line 7: | ||
* Please start editing this page after the /noinclude | * Please start editing this page after the /noinclude | ||
* -------------------------------------------------></noinclude> | * -------------------------------------------------></noinclude> | ||
[[File: | [[File:Belt_Dryers_1.jpg|thumb|right|200px|Belt Dryers 1]] | ||
[[File: | [[File:Belt_Dryers_2.jpg|thumb|right|200px|Belt Dryers 2]] | ||
The '''Belt Dryers''' are an apparatus which is used for continuous drying and cooling of pellets, pastes, moulded compounds and panels using air, inert gas, or flue gas. | The '''Belt Dryers''' are an apparatus which is used for continuous drying and cooling of pellets, pastes, moulded compounds and panels using air, inert gas, or flue gas. | ||
== Working principle == | == Working principle == | ||
| Line 15: | Line 16: | ||
The wet product is continuously and evenly applied through an infeed chamber onto a perforated belt. The belt, predominantly in horizontal position, carries the product through the drying area which is divided into several sections. In these cells drying gas flows through or over the wet product and dries it. Each cell can be equipped with a ventilating fan and a heat exchanger. This modular design allows the drying and cooling temperatures to be controlled separately in the different sections. Thus, each dryer cell can be individually controlled and the drying / cooling air flow can be varied in each cell. In addition, the speed of the conveyor belt can be varied what gives an additional parameter for setting of drying time. | The wet product is continuously and evenly applied through an infeed chamber onto a perforated belt. The belt, predominantly in horizontal position, carries the product through the drying area which is divided into several sections. In these cells drying gas flows through or over the wet product and dries it. Each cell can be equipped with a ventilating fan and a heat exchanger. This modular design allows the drying and cooling temperatures to be controlled separately in the different sections. Thus, each dryer cell can be individually controlled and the drying / cooling air flow can be varied in each cell. In addition, the speed of the conveyor belt can be varied what gives an additional parameter for setting of drying time. | ||
The cells can be heated or cooled directly or indirectly, and all heating media, such as oil, steam, hot water or hot gas can be used. | The cells can be heated or cooled directly or indirectly, and all heating media, such as oil, steam, hot water or hot gas can be used. | ||
== Design features == | == Design features == | ||
Belt dryers / Belt coolers are designed in modular system. Each belt dryer consists of infeed head, conveyor belt and discharge end. | Belt dryers / Belt coolers are designed in modular system. Each belt dryer consists of infeed head, conveyor belt and discharge end. | ||
Different kinds of dryers are possible to construct, e.g. | Different kinds of dryers are possible to construct, e.g. | ||
* Single-belt dryer | * Single-belt dryer | ||
* [[Multi Stage Dryers]] | * [[Multi Stage Dryers]] | ||
* Multi-level dryer | * Multi-level dryer | ||
* Multi-belt dryer | * Multi-belt dryer | ||
=== Ventilation options === | === Ventilation options === | ||
In general there are two ways of gas flow pattern. The drying air can flow, according to the treatment process, either through or over the product. | In general there are two ways of gas flow pattern. The drying air can flow, according to the treatment process, either through or over the product. | ||
=== Exemplary conveyor options === | === Exemplary conveyor options === | ||
| Line 30: | Line 38: | ||
* Chain-guided steel plate conveyor | * Chain-guided steel plate conveyor | ||
* Chainless wire mesh conveyor | * Chainless wire mesh conveyor | ||
=== Feeding variations === | === Feeding variations === | ||
| Line 37: | Line 46: | ||
* Rotatable arm feeding device – stable products | * Rotatable arm feeding device – stable products | ||
* Plates feeding | * Plates feeding | ||
== Typical applications == | == Typical applications == | ||
Belt dryers are predominantly used in the following industries: | Belt dryers are predominantly used in the following industries: | ||
* Chemical Industry | * Chemical Industry | ||
* Pharmaceutical industry | * Pharmaceutical industry | ||
| Line 46: | Line 58: | ||
* Plastics industry | * Plastics industry | ||
* Wood industry | * Wood industry | ||
==Video== | ==Video== | ||
<youtube>9dd1Ac4_pXY</youtube> | <youtube>9dd1Ac4_pXY</youtube> | ||
<youtube>mCDfi-BAPso</youtube> | <youtube>mCDfi-BAPso</youtube> | ||