PLG Series Fertilizer Compost Drying Machine Continual Plate Dryer

Product characteristics:

1. Easy regulation, strong applicability, very simple start-stop operation.

2. Each layer of drying plate can be separately fed into hot/cold media, and the material temperature control is accurate.

3. The residence time of materials can be adjusted accurately.

4. The material flow direction is single, there is no backmixing phenomenon, and the drying is uniform and the quality is stable.

5. The rake blade which transfers the material after stopping feeding can quickly empty the material in the dryer.

6. Careful cleaning and observation of the equipment can be carried out through special large-sized inspection doors and mirrors.

7. The material layer is very thin, the spindle speed is low, the installed power of the system is low, and the power consumption is low.

8. The operating environment is good, the solvent can be recovered, and the exhaust dust content is very low.

9. It can be operated in vacuum, especially for the drying of heat sensitive materials.

10. The dryer is manufactured as a whole. It only needs to be hoisted and positioned. It is very easy to install and locate.

11. Drying plate layout and vertical installation occupy a small area.

Technical parameters

Principle:

Wet materials are fed continuously to the first drying layer on the top of the dryer. They will be turned and stirred by rakes when the rake arm rotates and flow through the surface of the drying plate along the exponential helical line. On the small drying plate they will be moved to its outer edge and drop down to the outer edge of the large drying plate underneath, and will be moved inward and drop down from its central hole to the small drying plate on the next layer. Both small and large drying plates are arranged alternately so as materials can go through the whole dryer continuously. The heating media, which could be in forms of saturated steam, hot water or heat conducting oil will be led into hollow drying plates from one end to the other end of the dryer, The dried materials will drop from the last layer of the drying plate to the bottom layer of the shell body and will be moved by rakes to the discharge port. The moisture escapes from materials and will be removed from the moist discharge port on the top cover, or sucked out by the vacuum pump on the top cover for vacuum type plate dryer. The dried materials discharged from the bottom layer can be packed directly. The drying capability can be raised up if equipped with supplementary devices such as finned heater, condenser for solvent retrieval, bag dust remover, return and mix mechanism for dried materials and drawing fan etc. Solvent in those dried paste and heat sensitive materials can be easily recovered, and thermal decomposition and reaction can be also carried out.

Plate Dryer Features

1. Easy control, wide application

(1) Regulate thickness of materials, rotating speed of main shaft, number of harrow’s arm, style of and sizes harrows achieve best drying process.

(2) Each layer of drying plate can be fed with hot or cold media individually to heat or cold materials and make temperature control accurate and easy.

(3) Dwell time of materials can be accurately adjusted.

(4) Single flowing direction of materials without return flowing and mixing, uniform drying and stable quality, no re-mix is required.

2. Easy and simple operation

(1) Start stop of dryer is quite simple

(2) After material feeding is stopped, they can be easily discharged out of the dryer by harrows.

(3) Careful cleaning and observation can be carried inside the equipment through large-scale viewing window.

3. Low energy consumption

(1) Thin layer of materials, low speed of main shaft, small power and energy required for conveying system of materials.

(2) Dry by conducting heat so it has high heating efficiency and low energy consumption.

4. Good operation environment, solvent can be recovered and powder discharge meet the requirements of exhaust.

(1) Normal pressure type: as low speed of air flow inside the equipment and moisture being high in upper part and low in lower part, dust powder couldn’t float to the equipment, so there is almost no dust powder in tail gas discharged from the moist discharge port on the top.

(2) Closed type: equipped with solvent recovery device that can recover organic solvent easily from moist-carrier gas. The solvent recovery device has simple structure and high recovery rate, and nitrogen can be used as moist-carrier gas in closed circulation for those subject to burning, explosion and oxidation, and poisonous materials in order for safe operation. Especially suitable for drying of flammable, explosive and poisonous materials.

5. Easy installation and small occupying area.

(1) As the dryer is in a whole for delivery, it is quite easy to install and fix at site only by hoisting.

(2) As drying plates being arranged by layers and installed vertically, it takes a small occupying area though drying area is large.