The production project with an annual output of 20,000 tons of shaped biomass pellets runs for 300 days a year and produces 66 tons of rice husk pellets per day. It runs for 8 hours a day, which is an 8 tons/hour rice husk pellet production line project. The project purchased 4 rice husk pellet machine, each of which is equipped with a raw material hopper branch. The actual total investment of the project is 1 million RMB.
Rice Husk Biomass Pellet Machine Production Line Project
The actual total investment of the project is 1 million RMB, with an annual output of 20,000 tons of shaped biomass pellets. The basic situation of the project is shown in Table 1:
Table 1 List of basic information of this project
|project name||Annual production of 20,000 tons of shaped biomass pellets production project|
|Project nature||New||Industry category and code||Non-metallic waste and scrap C4220 plus
|Area||1200m 2||Production scale||Annual production of 20,000 tons of shaped biomass pellets|
|Investment situation||It is estimated that the total investment of the project is 1 million RMB, and the environmental protection investment is about 200,000 RMB, accounting for 20% of the total investment|
|The actual total investment is 1 million RMB, and the environmental protection investment is about 200,000 RMB, accounting for 20% of the total investment|
|Start time||November 2016||Completion time||January 2017|
|Labor quota||6 people||Work system||8 hours a day, 300 working days per year|
The construction content and actual construction content of the project's environmental impact assessment and approval department's approval decision are shown in Table 2:
Table 2 List of main construction contents of the project
|Serial number||Environmental impact assessment construction||Actual construction situation|
|The first floor, with a steel frame structure, has a building area of about 1200m 2 (30m
× 25m), one side is 20m high, and one side is 15m high. There are 4 production lines and the production scale is 20,000 tons per year.
Consistent with EIA
|Storage and Transportation Engineering||Raw material library||The building area of the raw material storage yard is about 450m2 (15m×30m), and the
height is 15m. The raw material storage yard is used to store collected raw materials.
|Consistent with EIA|
|Raw material bucket||A hopper 2 and a prismatic steel frame structures, each of the
hoppers can be divided into four exit spending, the maximum reserves of about 200t.
The project will produce 20,000 tons of shaped biomass pellets per year. The specific product plan is shown in Table 3.
Table 3 List of project product plans
|Molded biomass pellets||Ten thousand tons||2||The diameter of the formed biomass particles is about 8mm, the length is about 8cm, the ash content is less than
or equal to 8.0%, the density is more than or equal to 1.1t/m 3 , and the low calorific value is 3200kg/kcal. The moisture content of the finished product is less than 5%.
|total||Ten thousand tons||2||/|
Compared with the EIA report and its approval stage, the raw and auxiliary materials and energy usage are the same. For details, see Table 4:
Table 4 List of project raw and auxiliary materials consumption
|1||rice husk||About 23,000 tons/a||Outsourcing from the market, surrounding rice factories, moisture content of raw materials ≦ 12%|
|2||Electricity||About 125,000 kW·h/a||Local grid|
Compared with the EIA report and its approval stage, the use of main production equipment is consistent, and the details are shown in Table 5:
Table 5 List of main equipment list
|Serial number||Device name||Quantity||unit|
|6||Air duct||About 10m long||m|
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 5%.
(1) Raw materials
The raw materials are stored in the raw material warehouse, and the raw materials are transported through the airtight duct, and loading and unloading dust will be generated in the raw material warehouse.
(2) Hoist lifting
The materials transported by the air duct are lifted to the next process through the hoist, and dust will be generated in this process.
(3) Dust removal by dust collector
The material lifted by the hoist is dusted by the dust collector and then transported to the raw material hopper. Dust will be generated in this process.
(4) Granulation machine granulation
The material in the raw material hopper is transported to the feed inlet of the granulator due to the action of the center of gravity. Under the conditions of high temperature and high pressure, the water vapor is discharged to the atmosphere through the pipeline in the form of water vapor, and the water vapor is condensed into liquid water through the pipeline and discharged to the septic In the tank, the raw materials are compressed into shaped biomass particles, which are transported to the next process by a belt conveyor. Electric heating is used in the granulation process. This process generates dust.
(5) Conveyor belt
After being processed by the pelletizer, the formed biomass particles fall from the discharge port to the sealed belt conveyor, and are transported to the elevator by the sealed belt conveyor. This process generates dust.
(6) Hoisting and cooling
The elevator lifts and conveys the formed biomass particles to the raw material hopper, and adopts air cooling during the conveying process. The front cooling process is closed and uses electric energy. This process generates dust.
(7) Bagging and storage of finished products
After cooling, the formed biomass particles are temporarily stored in the finished product hopper, and some finished products are bagged and sealed in the finished product warehouse. This process generates dust.
Rice Husk Pellet
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