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1. Introduction to 300 series biomass gas generator sets
my country has a lot of biomass energy resources. The resources of all kinds of agricultural waste (such as straw, etc.) are equivalent to 308 million tons of standard coal per year, and the resources of firewood are equivalent to 130 million tons of standard coal. Therefore, the use of modern technology to develop and utilize biomass energy is of great significance to establishing a sustainable energy system, promoting social and economic development and improving the ecological environment.
The 300 series biomass gas engine uses waste rice husks, straw, wood powder, wood chips, etc. as raw materials and is burned and gasified by a gas generator to generate combustible power fuel and drive the engine to work. This kind of development and utilization of expensive and tense oil resources using rice husks, straw, wood flour, wood chips, etc. has good comprehensive economic benefits, and can also consume a large amount of rice husks and straws to pollute the environment.
According to the combustion characteristics of biomass gases, the characteristics of low calorific value (about 4MJ/Nm3) and high tar, our company cooperated with relevant institutes and used its circulating fluidized bed gasification furnace technology to successfully develop the 8300 biomass gas engine, which has the characteristics of compact structure, simple operation, reasonable layout and easy maintenance.
Each type of unit is mainly based on land-used starting points, and the frequency can be divided into 50HZ and 60HZ. It can be operated in a single unit or multiple units.
2. Technical characteristics
The gas mixing device adopts a Wendri pipe mixer or an electronically controlled mixer, equipped with correct distribution timing and reasonable ignition advance angle to facilitate the full combustion of combustible gas.
A reasonable air intake system can make the air and gas mix more evenly, the combustion is more fully, and the utilization rate of gas is improved. Explosion-proof doors are installed at both ends of the air intake pipe.
The intake pipe is designed to reduce the condensation of tar in the intake pipe and has good maintenance.
Reasonably design the cam line type, select reasonable inlet and exhaust timing, and control the opening time and overlap angle of the inlet and exhaust valves within a reasonable range, which can not only reduce the risk of inlet pipe fire, but also ensure the corresponding degree of scavenging, which is conducive to the reduction of exhaust temperature.
The exhaust pipe is water-cooled to reduce the temperature around the generator.
The ignition system produced by ALTRONIC in the United States is adopted to obtain high ignition energy and ignition time, ensure the reliability of ignition and meet the ignition needs of biomass energy.
3. Main advantages of 300 series biomass gas generator sets
High power. The unit power can reach 550kW, which is more than twice the high power in the domestic market, and can better meet the complete set needs of large-scale power plants.
High reliability. The prototype of this unit is a 8300 medium-speed diesel engine with mature technology (maximum power of 1103kW/600rpm), which is a gas engine with relatively low power, and the corresponding mechanical load is much smaller than the diesel engine index, so it has high reliability.
Save material consumption. At a 400kW load, an 8300 biomass energy engine saves about 5% of materials compared to two 200kW units at load (190+190)kW, reducing power generation costs and showing good economic performance.
The exhaust temperature of the cylinder is relatively low, and compared with the existing domestic 200kW unit, the exhaust temperature is 60~90~C. It greatly reduces the thermal load of the engine, extends the service life of components such as air valves, and further improves the reliability of the entire machine.
4. Conditions of use
1) The gas composition and heat value are as follows:
Gas composition and calorific value table
2) Air source conditions:
Before use, biomass gas should undergo appropriate filtration, gas-liquid separation, and pressure stabilization. If the temperature is too high, it should also be cooled and ensure that there is no liquid component in the gas. The pressure change rate is ≤1kPa/min, the tar content is ≤20mg/Nm3, the hydrogen volume content is ≤15%, the impurity particle size is ≤5μm, the moisture content is ≤20mg/Nm3, and the impurity content is ≤30mg/Nm3.
Aerial view of biomass power plant
1. Introduction to 300 series biomass gas generator sets
my country has a lot of biomass energy resources. The resources of all kinds of agricultural waste (such as straw, etc.) are equivalent to 308 million tons of standard coal per year, and the resources of firewood are equivalent to 130 million tons of standard coal. Therefore, the use of modern technology to develop and utilize biomass energy is of great significance to establishing a sustainable energy system, promoting social and economic development and improving the ecological environment.
The 300 series biomass gas engine uses waste rice husks, straw, wood powder, wood chips, etc. as raw materials and is burned and gasified by a gas generator to generate combustible power fuel and drive the engine to work. This kind of development and utilization of expensive and tense oil resources using rice husks, straw, wood flour, wood chips, etc. has good comprehensive economic benefits, and can also consume a large amount of rice husks and straws to pollute the environment.
According to the combustion characteristics of biomass gases, the characteristics of low calorific value (about 4MJ/Nm3) and high tar, our company cooperated with relevant institutes and used its circulating fluidized bed gasification furnace technology to successfully develop the 8300 biomass gas engine, which has the characteristics of compact structure, simple operation, reasonable layout and easy maintenance.
Each type of unit is mainly based on land-used starting points, and the frequency can be divided into 50HZ and 60HZ. It can be operated in a single unit or multiple units.
2. Technical characteristics
The gas mixing device adopts a Wendri pipe mixer or an electronically controlled mixer, equipped with correct distribution timing and reasonable ignition advance angle to facilitate the full combustion of combustible gas.
A reasonable air intake system can make the air and gas mix more evenly, the combustion is more fully, and the utilization rate of gas is improved. Explosion-proof doors are installed at both ends of the air intake pipe.
The intake pipe is designed to reduce the condensation of tar in the intake pipe and has good maintenance.
Reasonably design the cam line type, select reasonable inlet and exhaust timing, and control the opening time and overlap angle of the inlet and exhaust valves within a reasonable range, which can not only reduce the risk of inlet pipe fire, but also ensure the corresponding degree of scavenging, which is conducive to the reduction of exhaust temperature.
The exhaust pipe is water-cooled to reduce the temperature around the generator.
The ignition system produced by ALTRONIC in the United States is adopted to obtain high ignition energy and ignition time, ensure the reliability of ignition and meet the ignition needs of biomass energy.
3. Main advantages of 300 series biomass gas generator sets
High power. The unit power can reach 550kW, which is more than twice the high power in the domestic market, and can better meet the complete set needs of large-scale power plants.
High reliability. The prototype of this unit is a 8300 medium-speed diesel engine with mature technology (maximum power of 1103kW/600rpm), which is a gas engine with relatively low power, and the corresponding mechanical load is much smaller than the diesel engine index, so it has high reliability.
Save material consumption. At a 400kW load, an 8300 biomass energy engine saves about 5% of materials compared to two 200kW units at load (190+190)kW, reducing power generation costs and showing good economic performance.
The exhaust temperature of the cylinder is relatively low, and compared with the existing domestic 200kW unit, the exhaust temperature is 60~90~C. It greatly reduces the thermal load of the engine, extends the service life of components such as air valves, and further improves the reliability of the entire machine.
4. Conditions of use
1) The gas composition and heat value are as follows:
Gas composition and calorific value table
2) Air source conditions:
Before use, biomass gas should undergo appropriate filtration, gas-liquid separation, and pressure stabilization. If the temperature is too high, it should also be cooled and ensure that there is no liquid component in the gas. The pressure change rate is ≤1kPa/min, the tar content is ≤20mg/Nm3, the hydrogen volume content is ≤15%, the impurity particle size is ≤5μm, the moisture content is ≤20mg/Nm3, and the impurity content is ≤30mg/Nm3.
Aerial view of biomass power plant
