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3 T/H Wood Sawdust and Chaff Pellet Production Line Project
- Date: 2020-12-10 08:33:57
- From: www.pellet-richi.com
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In the new production line of the biomass pellet plant, the raw materials are generally unused agricultural and forestry wastes. The project introduced today is a production project with an annual output of 15,000 tons of shaped biomass pellets, with an average daily production of 50 tons, equivalent to 3t/h. The raw materials are generally rice husk, chaff, sawdust not used in furniture factories, wood, etc.
3 t/h Wood Sawdust and Chaff Pellet Production Line Project
1. Main Construction Content of the Project
Table 1 List of main construction contents of the project
| Serial number | Environmental impact assessment construction | The actual construction situation conditions |
|
| structural work |
Production workshop |
The production workshop includes crushing area, crushing area, granulating area and packaging area. Brick-concrete structure, located on the first floor, with a building area of about 1300m2 and a height of 6m. It is planned to set up 2 production lines with a production scale of 15,000 tons/year. Equipped with drum wood chip machine, high-efficiency pulverizer, pellet machine, bag filter, cyclone dust collector and other equipment. The building where the project is located has a total of four floors. The production workshop is the first floor, the second floor is the office and living area (this project contains 20m2), and the third and fourth floors are the residential area (not part of the project) |
Consistent with EIA |
| Storage and Transportation Engineering |
Raw material library |
Building material yard area of about 450m2 (15m × 30m), a height of 15m, raw material library construction area of about (18m × 12m) 216m2, height 6m, raw material for stacking the library collection. |
Consistent with EIA |
| Finished product library | The finished product warehouse area is about 108m2 (10.5m×12m-3*6), which is used for stacking the finished products in bags and sealing. |
||
| Auxiliary engineering |
office | Brick structure, located on the second floor area of 20m2, two-story office with a public room, kitchen. |
Consistent with EIA |
| Weighbridge | Located at the entrance and exit of the project, it is easy to weigh. The maximum weighing capacity is 120t. | ||
| Floor | Located on the south side of the project, the area is about 180m2 (5m×36m). | ||
| Public works |
Water supply | Water for the plant is provided by the water plant. | Consistent with EIA |
| powered by | The power for the plant is supplied uniformly by the local power supply network. There is a 300KVA transformer in the factory . |
Consistent with EIA | |
| drain | Rain and sewage diversion system | Consistent with EIA | |
| Environmental Engineering |
Wastewater treatment |
No production wastewater is produced in this project. Domestic sewage is treated by grease traps and septic tanks and used as agricultural fertilizers, and is not discharged; the initial rainwater is collected by the roof water collection tank and discharged to the outside water body. |
Consistent with EIA |
| Waste gas treatment |
The plant is enclosed in partitions; the dust generated in the conveying process adopts a U-shaped trough conveyor and is equipped with a U-shaped cover to reduce dust escape; the dust generated in the crushing process is processed by the cyclone dust collector; the dust generated in the granulation process is equipped with a bag for dust removal The water vapor produced by granulation is discharged to the outside through the pipeline; 2# and 3# rolling gates are installed with suction fans to reduce dust from escaping to the external environment; the east side of the raw material warehouse is installed with a suction fan to collect the dust in the factory and carry out gravity in the raw material warehouse Settlement: The settled dust is manually cleaned, and the unorganized waste gas can be discharged up to the standard through the above measures. Household kitchen fume hood through the exhaust gas can be treated to standard exhaust discharge. |
Consistent with EIA |
|
| Solid waste treatment |
The collected dust is reused in production; domestic garbage is uniformly removed and handled by the environmental sanitation department; waste lubricating oil is temporarily stored in the temporary storage room for hazardous waste, and then entrusted with relevant qualified units for disposal. |
Basically consistent with EIA | |
| Noise prevention | Use low-noise equipment, reasonable layout, vibration and sound insulation, and strengthen equipment maintenance | Consistent with EIA | |
2. Project Product Plan
The project will produce 15,000 tons of shaped biomass pellets annually. The specific product plan is shown in Table 2.
Table 2 List of project product plans
| name | unit | Annual output | Remarks |
| Molded biomass pellets | Ten thousand tons | 1.5 |
The diameter is about 8mm, the length is about 50~70mm, the ash content is 2.0%~5%, the density is ≧1.1t/m3, and the low calorific value is 3200kg/kcal. The moisture content of the finished product is less than 8%. |
3. Main Raw and Auxiliary Materials and Energy
Compared with the EIA report and its approval stage, the raw and auxiliary materials and energy usage are consistent, see Table 3 for details
Table 3 List of project raw and auxiliary materials consumption
| Serial number | name | consumption | Maximum storage capacity and storage location in the factory | Remarks |
| 1 | Chaff | About 5000 tons/a | About 1000t, raw material warehouse | Outsourcing market, surrounded by rice plant |
| 2 | Furniture factory scraps | About 7300 tons/a | About 2000t/a, raw material warehouse | Market outsourcing, surrounding furniture factories |
| 3 | Wood processing plant scraps | About 3500 tons/a | About 500t/a, raw material warehouse | Outsourcing market, timber processing factory |
| 4 | lubricating oil | 100kg/a | 100kg, tool room | Market outsourcing |
| 5 | Electricity | About 125,000 kW·h/a | / | Local grid |
| 6 | water | 151t/a | / | Local well |
Remarks:
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4. The Main Production Equipment
Compared with the EIA report and its approval stage, the use of main production equipment is consistent, and the details are shown in Table 4:
Table 4 List of main equipment list
| Serial number | Equipment name | Quantity | unit | Model or specification |
| Production equipment | ||||
| I . crushing, crushing process | ||||
| 1 | Drum wood chip machine (with conveyor belt) | 1 | station | GX216 (4~6t/h) |
| 2 | High-efficiency pulverizer (with conveyor belt) | 1 | station | GXP65*55 |
| 3 | High efficiency centrifugal fan | 1 | station | / |
| II . Granulation process | ||||
| 1 | Rice Husk Pellet machine | 1 | station | MZLH420 (1~1.5t/h) |
| 2 | Rice Husk Pellet Mill | 1 | station | MZLH520 (2~3t/h) |
| 3 | Supporting cooling and dehumidifying fan unit | 1 | set | / |
| 4 | Belt conveyor | 2 | set | / |
5. Production Process
Brief introduction of production process:
The process of this project has strict requirements on the moisture content of raw materials. According to the information provided by the construction unit, the moisture content of the raw materials purchased in this project is less than 12%, and the moisture content of the finished product is not higher than 8%. The whole process of this project does not require drying treatment, and the water loss process is the loss of water in the form of steam under the action of high temperature and high pressure during the granulation process.
①Raw materials
The raw materials of this project include chaff, furniture factory and wood processing factory waste scraps. The chaff can be directly pelletized. The furniture factory and wood processing factory waste scraps need to be crushed and crushed to be pelletized.
②Broken
The waste scraps from furniture factories and wood processing plants are sliced into small pieces of wood chips by drum wood chip machines (commonly known as crushers). This process generates a small amount of dust and noise.
③Smash
The small pieces of wood chips after slicing are crushed under the action of a wood pellet hammer mill crusher to meet the requirements of granulation. The crushing process is equipped with a cyclone dust collector to remove dust. This process will generate a small amount of dust and noise.
④ Granulation
The crushed raw materials are stirred and then enter the pelletizer for granulation. Under the conditions of high temperature and high pressure, the moisture in the raw materials is condensed into liquid water through pipes and discharged to the outside environment in the form of steam. The conveyor transports to the next process. The granulation process adopts electric heating, and the granulation temperature is 80℃~120℃ (according to the information provided by the pellet machine manufacturer). This process generates a small amount of dust, water vapor and noise.
⑤Packing and storage
The shaped biomass pellets output by the pellet machine enter the hopper under the action of the belt conveyor. This process adopts natural cooling or air cooling for cooling. At the same time, the shaped biomass pellets are packed at the outlet of the hopper. The bagged finished products are temporarily stored in the finished product warehouse for external sale. This process generates a small amount of dust.
The entire production process of the project is divided into closed disposal. Two fans are installed on the 2# and 3# rolling gates to reduce dust escape from the plant; the raw material warehouse is closed around, and only one rolling gate is reserved, and the partition on the east side of the raw material warehouse Install dust-removing and suction fans on the upper part to suck the dust in the factory into the raw material warehouse for gravity sedimentation; the upper part of the feeding port of the pellet making machine is closed and equipped with a bag filter; partitions or curtains are arranged around the granulation area, packaging area and finished product warehouse It is isolated from the outside world and connected to the bag filter through a pipe.
The above is the article for you: 3 T/H Wood Sawdust and Chaff Pellet Production Line Project.
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