4 T/H Wood Bamboo Pellet Production Line In Vietnam

This is a bamboo pellet production line in Vietnam project. The project mainly uses bamboo, and also adds agricultural and forestry waste such as wood chips and corn stalks.

Vietnam is currently one of the countries with the fastest economic development. The energy development strategy has always played an important role in Vietnam's economic development. The relative shortage of energy, the irrationality of the energy structure and the storage area of energy resources have affected the development and utilization of energy.

Energy waste and environmental pollution caused by low efficiency in the process have become important factors affecting the sustainable development of Vietnam's economy and society. Therefore, developing rural agricultural and forestry waste into resources and energy and implementing strategies to promote biomass energy development play an important role in Vietnam's economic development.

Bamboo is widely found in developing countries. Currently, millions of tons of bamboo resources around the world are not fully utilized, and there are millions of hectares of degraded land and land with utilization potential suitable for new bamboo forests.

Bamboo, like other woody biofeedstocks, can be converted into solid, liquid and gaseous fuels through biochemistry and thermochemistry, and can meet the biofuel market's sustainability requirements through relevant EU-recognized forest certification projects (such as FSC and PEFC).

Based on the good market prospects, the Vietnamese customer of this 4 t/h wood bamboo pellet production line in Vietnam project invested US$390,000 to build a new biomass pellet production line project with an annual output of 20,000 tons. The project covers an area of 6,500 square meters and a total construction area of 4,500 square meters.

• Project nature: New construction
• Number of employees: 16
• Working system: 300 working days a year, two shifts, 8 hours each.
• Project schedule: The construction period is 4 months and it will be put into operation in October 2020.

The 4 t/h wood bamboo pellet production line in Vietnam project covers a total area of 6500m2 and a total construction area of 4500m2.

The raw materials transported into the Vietnam wood bamboo pellet plant are sliced by a slicer and then crushed into appropriate sizes by a crusher. The crushed bamboo is dried in a dryer, mixed with other waste materials, and sent to the bamboo pellet machine via a conveyor belt for pressurization and densification. The newly extruded bamboo pellets are cooled, solidified and strengthened. strength.

The bamboo pellets are then screened to separate the bamboo particles and bamboo pellets. After simple packaging, it is put into storage for sale. Unqualified products can be reused as raw materials, reprocessed, and recycled. The formed biomass fuel is small in size, has a large specific gravity, is resistant to combustion, and is easy to store and transport.

• Pulverizer: Crush appropriately sized and dry materials into powder for granulation.
• Bamboo dryer: Dry raw materials to the moisture range required for granulation.
• Bamboo pellet machine: Granulate the prepared materials into pellets.
• Pellet Cooler: Cools the newly extruded hot pellets and hardens the pellets.
• Bamboo pellet packaging equipment: Packaging pellets as required, either in small packages or in large packages.
• Conveying equipment: placed at the front and back ends of the host equipment to help transport raw materials during the production process.
• Electric control cabinet: controls the power equipment of the entire bamboo pellet production line.

The water supply uses a branch-shaped water supply pipe network to supply water to each water point, and the water supply pipes are PPR pipes. All pipelines in the factory area are laid underground, with a burial depth of not less than 1.8 meters.

In this design, domestic water is connected from the nearby tap water pipeline in the factory area. In order to facilitate measurement and independent accounting, the drainage volume of the project is shown in the table below.

The 4 t/h wood bamboo pellet production line in Vietnam project's power supply is introduced from the local power grid, which can meet the project's production and daily electricity needs.

The waste gas generated after the project is completed and put into use is mainly: odor of raw materials and dust generated during the production process.

01

Raw material odor

The raw materials produced in this project, including sawwood ash containing a certain amount of moisture, all have a certain odor. They are unorganized exhaust gases. The type and size of the odor depend on the type. The smell is a natural plant smell and has minimal impact on the surrounding air environment.

02

Process dust

The dust generation points of this 4 t/h wood bamboo pellet production line in Vietnam project are mainly the crushing, screening, and mixing processes. The amount of dust generated is related to the particle size/humidity of the material, the speed/drop of material transfer, and production operation management.

The amount of dust generated during the project's production process is calculated as 0.321kg/t (product), then the amount of dust generated during the project's production process is approximately 6.42t/a. It is designed to install dust collection hoods above the material receiving port, crusher, trommel screen and mixing section, with a gas collection efficiency of 90%.

Two cyclone dust collectors + 2 bag dust collectors are designed, with a dust removal efficiency of 99% and an air volume of 10,000 m3. /h, if the dust is treated and discharged through the 15-meter-high exhaust pipe to meet the standard, the dust emission volume is 0.058t/a and the emission concentration is 1.21mg/m3. The unorganized dust emission is 0.642 t/a, and the emission rate is 0.27kg/h.

03

Drying oven exhaust gas

The dryer of this 4 t/h wood bamboo pellet production line in Vietnam project uses biomass fuel produced by this project. The annual biomass consumption is 200t. According to the "Environmental Statistics Manual", the low-level calorific value of biomass is about 3000 kcal/kg, the sulfur content is less than 0.08%, and it contains C50%, Oxygen content is 45%, ash content is less than 1%.

The determination of pollutants is estimated based on one ton of firewood chips, exhaust gas production coefficient: 6240.28m3/ton of raw material, sulfur dioxide production coefficient: 17Skg/ton of raw material (S is 0.08 for this project), smoke and dust production coefficient: 0.5 kg/ton of raw material, nitrogen oxides Production coefficient: 1.02kg/ton of raw materials.

• The waste gas generated by this project is: 1.2481 million standard m3;
• Sulfur dioxide production: 0.272t/a, 217.9mg/m3;
• The smoke generation amount is 0.4t/a, 80.1 mg/m3;
• Nitrogen oxide production: 0.204t/a, 163.5 mg/m3.

The exhaust gas is planned to be discharged from a 15m high chimney after dust removal using a water bath. After water bath treatment, the dust removal rate is 87%. The final emission concentrations of SO2, smoke dust, and nitrogen oxides are divided into 217.9mg/m3, 10.42mg/m3, and 163.5 mg/m3. m3, which can meet the "Industrial Furnace Air Pollutant Emission Standards".

04

Raw material storage yard

The wood chips and bamboo chips used in this 4 t/h wood bamboo pellet production line in Vietnam project are dry raw materials, which are easy to produce dust.

The raw material warehouse of this project is set up in a closed factory building, and closed transportation is used in the production process. The amount of dust generated during the production process is small, and the dust generated The quantity is about 0.5t/a.

The project produces no production wastewater, and the main domestic sewage discharge is 2592t/a. The sewage mainly contains COD, BOD5, SS, ammonia nitrogen, and animal and vegetable oil pollutants. The wastewater quality is CODCr 200~400mg/ L, BOD5 100～200mg/L, NH3-N 30mg/L, SS 100～200mg/L.

The noise source of this 4 t/h wood bamboo pellet production line in Vietnam project is mainly the noise generated by the operation of drum screens, raw material conveyors, granulators, fans, equipment and other equipment. The noise value is generally between 75 and 95dB(A). details as follows:

The solid waste of the 4 t/h wood bamboo pellet production line in Vietnam project mainly comes from coarse materials screened by drum screens; dust collected by dust removal; packaging waste and employee domestic waste, etc.

• The coarse materials screened out by the trommel screen are all usable biomass, with a production volume of about 200t/a, and are reused in the production process.
• The dust collected by cyclone dust bag dust collector is 5.72t/a. It is collected and reused in the production process.
• The amount of packaging waste generated in this project is 0.2t/a. There are 60 project employees and the annual working day is 300 days. The domestic waste emission coefficient is calculated as 1.0kg/person·day. The amount of domestic waste generated by the project employees is approximately 18t/a. .
• The drying furnace produces 30 tons of ash per year, which is collected and sold to local farmers for use as agricultural fertilizer.

Why would this customer start a bamboo pellet processing business in Vietnam? It must be because of the prospect of earning money.

Bamboo is a potential, highly sustainable biomass resource that can help countries and the world achieve renewable energy goals. For example, the European Union stipulates in its Renewable Energy Directive (REDII) that renewable energy consumption should account for 32% of total energy consumption by 2030, and also requires each member state to increase the proportion of renewable energy in the transportation sector.

It must be at least 14%. In REDII, the European Union stipulates sustainability requirements for forestry raw materials and greenhouse gas standards for solid and gaseous biomass fuels. Bamboo as a biofuel has the potential to comply with these requirements and standards.

Bamboo is widely found in developing countries. Currently, millions of tons of bamboo resources around the world are not fully utilized, and there are millions of hectares of degraded land and land with utilization potential suitable for new bamboo forests.

It is estimated that if 10% of the current global bamboo resources are economically exploited, approximately 50 million tons of biomass can be produced every year, which will play a role in diversifying the supply of biomass raw materials.

Since some bamboo-producing countries (such as Vietnam, Colombia, Brazil, Indonesia, Nigeria and South Africa) are also exporters of fuels (such as coal and biofuels), bamboo biofuels can provide these countries with an opportunity to develop new supply chains to form a green , a more diversified fuel trading portfolio, thereby promoting its gradual transition from fossil fuel trading to biofuel trading.

Currently, bamboo bioenergy products are mainly solid fuels (such as bamboo pellets), which have been commercialized in some countries (such as China and Ethiopia).

In terms of cost, bamboo generally requires manual selection, and its harvesting cost may be higher than other biomass raw materials. However, bamboo harvested in this way has no stones, soil and other debris, and is a clean and pollution-free raw material, which is different from agricultural residues (such as agricultural residues).

Unlike corn stalks and rice straw), bamboo does not require plastic packaging in logistics. Packaging materials and impurities will seriously affect the operation of biofuel pretreatment equipment, thus affecting the economic feasibility of related conversion processes.

In addition, the high greenhouse gas emission reduction potential of bamboo fuel and the high carbon sequestration capacity of bamboo forest ecosystems provide opportunities for bamboo forests to enter the carbon emissions trading market. Therefore, the economics of bamboo's complete value chain are more advantageous than other biomass resources.