Biomass Gasification Power Plant: capacity from 200kw to 3000kw, 1kg woody biomass generate 1kw electricity, 1kw woody biomass produce 2-3m3/h syngas, syngas heat value 1100-1500kcal/m3.
Biomass Gasifier HQSR Series Internal Combustion Power Generation Technical Parameters
|Dimensions||Diameter (mm) x Height (mm)||φ1200×3800||φ1400×4800||φ2000×7000||φ2600×8000|
|Furnace area (m²)||0.785m²||1.13m²||2.54m²||4.52m²|
|Grate hydraulic pump station motor (kw)||3||3||4||5.5|
|Double shaft screw feeder motor (kw)||5.5||5.5||7.5||7.5|
|Feeding belt motor（kw）||4||5.5||5.5||5.5|
|ID fan power（kw）||2.2||4||11||15|
|Gas outlet diameter（mm）||φ219||φ325||φ426||φ530|
|ESP treatment air volume（Nm³/h）||500||1000||2100||2900|
|Gas buffer tank||Diameter (mm) x Height (mm)||φ1000×3000||φ1200×3000||φ1500×4500||φ2000×4500|
|Rated fuel consumption（kg/h）||260||370||840||1500|
|Biochar output (wet type)||10～15%|
|Single gasifier weight (≈ ton)||10||15||30||50|
|Note: 1. Applicable to biomass raw materials such as particle size <100mm pellet/wood chips, moisture content: <15%
2. Technical parameters are subject to change without further notice!
Principle Of Pyrolysis Gasification（Biomass Gasification Power Plant）
Biomass gasification refers to the thermochemical process of converting biomass fuels into flammable gases. In biomass gasification process, water vapor, free oxygen, or bound oxygen reacts with the carbon in the fuel to form a combustible gas. Biomass gasification process is more complex and the gasification reaction conditions are also different. However, all the gasification reaction processes basically include the processes of biomass drying, pyrolysis, oxidation and reduction.
The Haiqi gasification power generation process includes three aspects. One is biomass gasification, which converts solid biomass into gaseous fuel; the other is gas purification. The gasified gas contains certain impurities, including ash, coke, and tar. , The impurities need to be removed through the purification system to ensure the normal operation of gas-fired power generation equipment; the third is gas-fired power generation, which uses gas turbines or gas internal combustion engines to generate power. In some processes of biomass gasification plant, in order to improve power generation efficiency, waste heat boilers and steam turbines can be added to the power generation process.
Flow Chart Of Comprehensive Utilization Of Biomass Gasification Power Generation
Feedstock Of Biomass Gasification Power Plant
Applicable raw materials: a wide range of raw materials, such as straw, wood chips, rice husk, palm shell, bagasse and other agricultural and forestry wastes, particle size: 30-50mm, water content: less than 20%
Biomass Gasification Power Generation System Generator Set
Recommended use: 8300 or 6300 biomass gas generator set, the advantages of this type of generator set are large cylinder bore, low speed, high torque, suitable for low calorific value gas.
Model selection: single machine can be selected below 500kw/h power generation: more than 500kw/h is recommended to use multiple machines in parallel.
Advantages Of Biomass Gasification Power Plant
●Biomass gasification power generation technology is a unique way different from other renewable energy sources in the utilization of biomass energy. Biomass gasification plant has three characteristics:
●First, biomass gasification power generation technology has sufficient flexibility. Since biomass gasification power generation can use internal combustion engines, gas turbines, or even combined with waste heat boilers and steam power generation systems, biomass gasification power generation can choose appropriate power generation equipment according to to the scale. Ensure reasonable power generation efficiency at any scale. The flexibility of biomass gasification power generation technology satisfies the characteristics of the dispersed utilization of biomass;
●Second, biomass gasification power generation technology has good cleanliness. Biomass itself is a renewable energy source, which can effectively reduce the emission of CO2, SO2 and other harmful gases. The gasification process generally has a low temperature (about 700-900oC), and the generation of NOx is very small, so biomass gasification plant can effectively control the emission of NOx;
●The third is economy. The flexibility of biomass gasification power generation technology can ensure that the technology is effective and economical on a small scale. At the same time, the gas-fired power generation process is simple and the equipment is compact. It also makes the biomass gasification power generation technology more renewable than other renewables. Energy power generation technology investment is smaller, so in general, biomass gasification power generation technology is the most economical power generation technology of all renewable energy technologies, and the comprehensive power generation cost is close to the power generation level of small conventional energy sources.
Analysis of Economic Benefit of Biomass Gasification Power Generation (1mw)
|1||Consumption||Raw material (wood chips)||1250kg/h||0.3 RMB/kg||9,000 RMB||270,000 RMB||2,700,000 RMB||3,373,000RMB|
|Manpower||2 people||100 RMB/d||200 RMB||6,000 RMB||60,000 RMB|
|Electricity consumption||58kw/h||0.75 RMB/kw||1,044 RMB||31,300 RMB||313,000 RMB|
|Maintenance cost||Annual equipment maintenance costs are calculated at 3% of equipment investment, 300,000 RMB per year|
|2||output||Electricity||1000kw/h||0.75 RMB/kw||18,000 RMB||540,000 RMB||5,400,000 RMB||9,969,000 RMB|
|Biochar||188kg/h||0.8 RMB/kg||3,610 RMB||108,300 RMB||1,083,000 RMB|
|Wood tar||100kg/h||0.8 RMB/kg||1,920 RMB||57,600 RMB||576,000 RMB|
|Wood vinegar||250kg/h||0.5 RMB/kg||3,000 RMB||90,000 RMB||900,000 RMB|
|Steam||1.4t/h||200 RMB/t||6,720 RMB||201,600 RMB||2,010,000 RMB|
|The total annual profit is 6.596 million yuan (RMB), and the investment return period is about 1.5-2 years|
Note: 1. The above parameters are calculated based on a 1mw power station as an example, and the relevant prices are subject to local prices.
2. The final parameters are subject to the signed contract.
●After theoretical calculation and practical experience, it is known that about 1.25 kg of biomass wood chips can be gasified and burned to generate 1 kw of electricity through an internal combustion engine. Therefore, an installed capacity of 1000 kw/h needs to consume 1250 kg of wood chips, and the unit price of wood chips is 0.3 yuan/kg. Calculated, the cost of raw materials per hour is 375 yuan, running 24 hours a day, 300 days a year, and the annual consumption cost of raw materials is 1250kg/h*24h*300d*0.3 yuan/kg=2.7 million yuan.
●Each set of equipment requires 2 operators, and the daily salary of each person is calculated at 100 yuan. The annual salary of personnel needs 2 people * 100 yuan / d / person * 300 days = 60,000 yuan.
●The self-consumption of this set of equipment is about 58kw/, so the annual electricity consumption cost is 58kw/h*24h*300d*0.75 yuan/kw=313,000 yuan.
●The equipment maintenance cost is calculated as 3% of the total equipment investment. The total investment of this set of equipment is 10 million yuan, so the annual equipment maintenance cost is 10 million yuan * 3% = 300,000 yuan.
●The total consumption year is 270+6+31.3+30=3.373 million yuan
●The electricity production is 1000kw/h, the on-grid electricity price is calculated at 0.75 yuan/kw yuan, and the annual electricity income is 1000kw/h*24h*300d*0.75 yuan/kw=5.4 million yuan.
●About 8%-15% biochar is produced after wood chip gasification. According to the calculation of 15% biochar, the biochar is calculated at the price of 0.8 yuan/kg, and the annual biochar income is about 1250kg/h *15%*24h*300d*0.8 yuan/kg=1.083 million yuan.
●About 8% of wood tar is produced after wood chips gasification. If the market price of wood tar is calculated at 0.8 yuan/kg, the annual income of wood tar is about 1250kg/h*8%*24h*300d*0.8 yuan/kg= 576,800 yuan.
●After the wood chips are gasified, 20% of wood vinegar is produced. The market price of wood vinegar is calculated at 0.5 yuan/kg, and the annual income of wood vinegar is 1250kg/h*20%*24h*300d*0.5 yuan /kg = 900,000 yuan.
●The waste heat of the exhaust gas of the internal combustion generator can be used, and the connected waste heat boiler can generate 1.4t/h of steam. The steam is calculated at a market price of 200 yuan/ton, and the annual steam income is about: 1.4t/h*24h*300d*200 yuan / ton = 2.01 million yuan.The total annual income is 540+108.3+57.68+90+201=9.969 million yuan
Utilization And Value Of Biomass Gas
Biomass pyrolysis gasification technology produces fuel gas as a mixed gas, in which the combustible components are mainly CO, H2, CH4, CmHn, etc., and the heating value is 1100~1500kcal/m³. One kilogram of straw can produce 1-1.5m³ biomass combustible gas. After purification, this gas can be used to replace natural gas, coal gas, etc. for power generation, fire cooking, heating, etc.
The role and use of woodchip gasification by-products：
●The role of charcoal: Charcoal is widely used in food, pharmaceutical, chemical, metallurgy, national defense, agriculture and environmental protection due to its unique microporous structure and super adsorption capacity. The industrial field utilizes the unique microporous structure and super adsorption capacity of charcoal. In industry, charcoal is used for adsorption, degumming, deodorization of food, medicine, alcohol, oil, water purification, precious metal recovery, etc., as well as gas purification and sewage treatment in environmental protection. In agriculture, it can also be used to increase soil temperature and loosen soil. It can be used as various cultivation substrates and is widely used in crop breeding, soilless cultivation in greenhouses, tobacco greenhouses, vegetable greenhouse breeding, flower planting, etc.
●The role of wood tar: Creosote, anti-polymerization agent, flotation foaming agent, wood pitch and other products can be obtained after processing. It can also be used in medicine, synthetic rubber and metallurgy and other sectors.
●The role of wood vinegar: wood vinegar has various effects such as promoting plant growth, bacteriostasis, weeding, and antiseptic, and can be used as deodorant, food, beverage, feed additive, and medical and health care products. It has a wide range of uses in agriculture, forestry, animal husbandry, environmental protection, chemical industry, food processing and medicine and health.
Biomass Gasification System Carbon And Gas Co-Production
Vietnamese drying enterprises use the gasification of rice husk raw material as the heat source for the drying system. The rice husk charcoal produced is supplied to local steel mills as a carbonizer. The local rice husk gas has almost zero cost, saving customers about 700 million VND in fuel costs every year, which is about more than 2 million yuan.
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