4tph Biomass Sludge and Sawdust Pellet Production Line

 

Now take the production line project of sludge and sawdust mixed granulation production line as a case, according to the technological process and each section to do the following introduction and explanation.

Definition of sludge granulation line
Sludge mixed with other materials to carry out a number of processing processes, and finally made into granule. The granules are small in size, heavy in weight and easy to store and transport. It can save energy and reduce emissions and has good economic and social benefits. Sludge pelletizing fuels can be widely used in biomass power plants, biomass steam boilers, domestic fireplaces, ovens and biomass gasifier, etc.

Raw material:
It is mainly divided into industrial sludge and domestic sludge. Industrial sludge mainly includes paper making sludge, sludge from industrial waste water treatment station, etc. Domestic sludge mainly includes river sludge, urban sewage sludge.

Flow process brief introduction
After the sludge is dried by the paddle dryer, it is screened and finally processed for granulation. The diameter of finished particles is 6-10mm, which is optional. After cooling, the granulator is packed into 20-50kg/ bag for convenient transportation and sale. Sludge granulating project with 4 tph, the total power is about 540 kw, the workshop covers an area of 1200m² , contains raw material and finished product warehouse; The design of the whole line is compact, reasonable, meets the requirements of environmental protection, and can be customized according to customer requirements.

Flow process diagram
Sludge granulation project flow process
Drying process→cleaning process→pelleting process→cooling and bagging process

The working process:

Drying process:
The paddle drying system mainly includes feeding system, air preheating system, drying system, discharging system, exhaust humidity system and control system. It is used for drying sludge or sludge mixture. It is stirred by paddle, which dries evenly. Drying equipment has the characteristics of compact structure, reasonable design and large yield, etc.

Drying equipment: LYHJ260, heat transfer area of 260m², transmission power of 132 kw, designed output 4 tph (sludge initial moisture content 50%).


Cleaning process:
The purpose in the cleaning section of the complete sludge pelletizing project is to clean up the large impurities in the raw materials, so as to avoid the mechanical equipment and conveying equipment in the next process from failure or damage. The pre-screener is characterized by high output, less power consumption, simple structure, small space, easy maintenance and easy installation, etc.

Cleaning equipment: MCY160*300, power 3kw, designed output: 4tph
Pelleting process:
4 sets of MZLH420 biomass pellet mill are designed in the pelleting process to produce 4tph biomass pellet.The diameter of biomass pellet is 6-10mm, which is optional, and the biomass pellet has the characteristics of high calorific value, no pollution and low ash content, which can be widely used in biomass power plants, biomass steam boilers, household fireplaces, drying furnaces and biomass gasifier. The complete set of sludge granulator project has obvious advantages in the pelleting process: the pellet mill is equipped with forced feeder, and the material is forced into the ring die pressing chamber, which can make the pellet operate smoothly, the material are not blocked, and produce efficiently. Specially designed arch breaking screw conveyor feeding, so that the bad fluidity material can be feeded smoothly.

Pelleting equipment: MZLH420, host power: 90kw, power of enforced feeder: 0.75kw, designed output 1tph, qtty: 4 sets.

Cooling and bagging process:
The cooling process of the complete set of sludge granulation project is by using of cooler to reduce particles temperature and decrease grain moisture. It is low energy consumption, easy operation and high automatic degree. The pellet after cooler is not higher than room temperature 5 ºC, pellet moisture after cooled is around 8-10%, particle density 650-750 kg/m3.

The bagging scale is according to the customer's local sales needs, the appropriate packing scale is selected to facilitate the customer to sell products. There are usually two specifications: small bag and ton bag. 20-50kg/bag for small bags, 500-1000kg/bag for ton bags. The packing scale has high automation degree, high packing accuracy, and the weighing system is a sensor measuring system with high sensitivity and strong anti-interference ability.


Cooling equipment: SKLB2.5, cooling room volume:2.5m3, Design output 4tph.
Packing equipment: SDBLY-K, packing range: 20-50kg/ bag, 3-5 bags/min.

According to the needs of different customers, the scheme can be optimized:
1. If necessary, buffer bins can be added between each section to replace the storage yard. The advantage is that it can improve the automation degree of production line and reduce dust pollution in the workshop; The disadvantage is that it will increase the construction cost of the production line, and because the bulk density of materials after crushing is very light, it is easy to bridge in the bins and material does not drop.
2. The packaging equipment can be adjusted according to customers' requirements for finished product packaging. It can also be stored in bulk or stored into silos.

Detail Quotation Solutions for you, we need to know Information as Follows: 
(1). What capacity would your prefer?
-----The Capacity Range of Wood Pellet Machine: 0.8-1T; 1.5-2T; 2-3T;3-4T.
 
(2).What is your raw material?
-----According to different raw material(such as hard wood,soft wood,straw,rice hust), capacity is different.
 
(3).What is your raw material size?
-----Best size for pressing high quality pellets is 3mm-5mm.
 
(4).What is the moisture of your raw material?
-----Better to be 10-15%.( If large than this, then we will recommend your Dryer Machine)
 
(5).Final Pellets Size?
-----We have Diameter for Pellets:6mm, 8mm, 10mm, 12mm, (Different Diameters for your Different Requirement.)
------Pellets Length: Adjustable20-50mm. (Normally our clients ask pellets length of 33mm, between 30-36mm)

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