Biomass gasifier power generation

Biomass Gasifier Technical Process

Converting biomass into clean energy through advanced gasification technology, achieving efficient and environmentally friendly energy utilization

Introduction to biomass raw materials

The raw materials for biomass gasifiers primarily consist of various agricultural and forestry wastes, as well as some organic garbage such as crop straw, rice husks, wood chips, and dead branches. These materials are renewable, low-cost, and environmentally friendly clean feedstocks that are well-suited to the working characteristics of gasifier hypoxic pyrolysis. With simple pretreatment, efficient gas production can be achieved.

Gasifier Conversion

During the gasification furnace conversion stage, biomass pellets are transformed into combustible gases through a thermochemical process under high-temperature and oxygen-deficient conditions. Under these conditions, biomass produces combustible gases primarily composed of carbon monoxide and hydrogen. Our gasification furnace employs advanced technology to ensure thorough contact between biomass feedstock and gasifying agents, enhancing gasification efficiency and gas quality. The resulting combustible gas features high calorific value, cleanliness, and environmental friendliness, enabling direct use for power generation, heating, or as a chemical raw material, achieving efficient energy conversion of biomass resources.

initial purification

The raw combustible gas produced from the gasifier contains solid particles, tar, and other impurities, requiring multi-stage purification. Initially, the gas enters a "cyclone dust removal + spray integrated device," where most solid particles are removed through a combination of spray and centrifugal force. The use of spray hot water prevents tar from condensing and solidifying in pipelines and equipment. This step not only effectively removes some soluble pollutants but also optimizes gas composition through temperature control. Our purification system employs intelligent control technology, significantly improving control accuracy and energy efficiency, ensuring stable and reliable purification performance while creating favorable conditions for subsequent deep purification.

Final Purification

The gas enters the "spray + electrostatic precipitation" equipment, where it is further cleaned of fine particulate matter and water-soluble gas pollutants through a specially designed spray system. Subsequently, it enters the electrostatic tar removal section, where high-voltage electric fields effectively remove residual fine tar particles from the gas, achieving a purification efficiency of over 99%. This stage of purification ensures that the gas meets the usage standards. The resulting pure gas has a stable calorific value and excellent combustion characteristics, and can be directly used for internal combustion engine power generation, gas boiler heating, etc., realizing the high value-added utilization of biomass resources.

Combustible Gas Power Generation

The biomass gasification power generation system involves passing the gas produced by biomass gasification into an internal combustion engine for combustion, generating high-temperature and high-pressure gas, which drives the piston to move and convert it into mechanical energy. This mechanical energy is then converted into electrical energy through a generator. The core process is "chemical energy - thermal energy - mechanical energy - electrical energy". The raw materials primarily consist of agricultural and forestry waste, straw, wood chips, dead branches, etc. This process turns waste into treasure, not only solving the problem of biomass accumulation in rural areas but also significantly reducing fuel costs. Compared to natural gas and diesel power generation, it offers a notable operational cost advantage. The system has a small footprint and short construction period, making it suitable for construction in agricultural and forestry areas, towns, industrial parks, and remote regions. This allows for local sourcing, on-site power generation, and nearby electricity consumption, alleviating the pressure on the power grid and enhancing energy supply reliability.

Biomass Production

Agricultural Waste Treatment and Pelletization

Gasifier Conversion

Thermochemical Conversion Under High-Temperature Oxygen-Deficient Conditions

Purification Treatment

Cyclone Dust Removal and Spray Purification

Final Purification

Electric Tar Capture and Secondary Spray Treatment

Combustible Gas Power Generation

Combustible gas is converted into electricity through internal combustion engine and generator

Project Advantages and Economic Benefits

Biomass gasifier technology brings multiple benefits to society, energy and environmental protection fields

Economic Benefit Analysis

Biomass gasifier projects have significant economic benefits. In terms of investment return, the investment payback period for small and medium-sized gasification power generation projects is usually 3-5 years, and large projects can recover investment within 4-6 years. In terms of operating costs, biomass raw material costs are only 1/3-1/2 of traditional fossil fuels, and maintenance costs are low. Taking a gasification power generation project that processes 50 tons of biomass per day as an example, the annual power generation can reach 10 million kWh, with an annual output value of about 6 million yuan and an annual profit of 1.5-2 million yuan. In addition, the project can also enjoy national renewable energy subsidies, tax incentives and other policy support, further improving the economic feasibility of the project. The promotion and application of biomass gasifier technology not only creates direct economic benefits but also drives the development of related industries, forming a virtuous economic cycle.

Investment Return

Project investment payback period is usually 3-5 years, long-term operating costs are much lower than traditional energy.

Operating Costs

Biomass raw material costs are low, maintenance is simple, overall operating costs have significant advantages.

Social Level

The promotion and application of biomass gasifier technology has profound significance at the social level. First, the project creates a large number of employment opportunities, forming a complete industrial chain from raw material collection, processing to equipment operation and maintenance, effectively promoting rural economic development and increasing farmers' income in agricultural areas. Second, the localized production of biomass energy enhances regional energy self-sufficiency, reduces dependence on fossil fuel imports, and improves national energy security. In addition, biomass gasifiers provide stable and reliable clean energy for rural areas, improve rural energy structure, enhance residents' quality of life, promote equalization of urban and rural energy services, and provide strong support for the rural revitalization strategy.

Create employment opportunities, promote rural economic development
Improve energy self-sufficiency rate, enhance energy security
Improve rural energy structure, enhance quality of life

Energy Level

At the energy level, biomass gasifier technology achieves efficient conversion and utilization of renewable energy. Compared with traditional direct combustion, gasification technology converts biomass energy into high-quality syngas, with comprehensive energy utilization rate reaching over 75%, much higher than the 20-30% of direct combustion. This technology can convert low-grade biomass such as agricultural waste and forestry residues into gas that is easy to store, transport and use, improving energy density and usage flexibility. Biomass gasifiers can provide stable and reliable clean energy supply, reduce dependence on fossil energy, and optimize energy structure. At the same time, the decentralized utilization mode of biomass energy helps build a diversified energy supply system, improve the resilience and reliability of the energy system, and provide an important technical path for national energy transition.

Efficient utilization of renewable resources, reduce dependence on fossil energy
Energy conversion efficiency up to over 75%
Provide stable and reliable clean energy supply

Environmental Level

In terms of environmental protection, biomass gasifier technology has significant ecological benefits. First, the carbon dioxide absorbed during biomass growth is basically equivalent to the carbon dioxide released during its combustion, forming a carbon-neutral cycle, which helps mitigate the greenhouse effect. Compared with fossil fuels, biomass gasification can reduce carbon dioxide emissions by 60-90%, making an important contribution to addressing climate change. Second, this technology effectively treats agricultural waste, reduces air pollution caused by open burning of straw, and improves regional environmental quality. The pollutants generated during biomass gasification undergo multi-stage purification treatment, and emission concentrations are far below national standards. In addition, biomass gasification promotes circular economy development, achieves efficient recycling of resources, reduces environmental pressure from waste, and provides a practical technical solution for building a resource-saving and environment-friendly society.

Significantly reduce carbon dioxide emissions, help achieve carbon neutrality
Effectively treat agricultural waste, reduce environmental pollution
Promote circular economy development, achieve efficient resource utilization

Successful Case Display

We have successfully implemented multiple biomass gasifier projects across the country, providing clean energy solutions for different industries

Gasifier Case One

Lec has independently developed a RTO process driven by clean biomass gas/coal-derived gas heat source, marking the first case in China where biomass or coal is used as fuel to provide heat source for RTO equipment

Gasifier Case Two

The gas undergoes purification through a multi-step process. Initially, most of the dust is removed using the GWT gravity sedimentation spray system, followed by the separation of the remaining particulate matter using a two-stage WEP wet electrostatic precipitator. The finally purified gas is then fed into the combustion system for use, enabling the utilization of low-cost clean energy.

Gasifier Case Three

Tar in biomass gas tends to clog pipelines and equipment, leading to frequent equipment downtime for cleaning. This not only drives up operation and maintenance costs but also makes it difficult to maintain gas quality. Addressing this industry pain point, Longtai has developed its own biomass/coal gasifier and supporting purification system to solve the tar clogging issue, providing clean energy for backend equipment and ensuring safe and stable system operation.

Biomass Gasifier Power Generation

Biomass Gasifier Technical Process

Introduction to biomass raw materials

Gasifier Conversion

initial purification

Final Purification

Combustible Gas Power Generation

Biomass Production

Gasifier Conversion

Purification Treatment

Final Purification

Combustible Gas Power Generation

Project Advantages and Economic Benefits

Economic Benefit Analysis

Investment Return

Operating Costs

Social Level

Energy Level

Environmental Level

Successful Case Display

Gasifier Case One

Gasifier Case Two

Gasifier Case Three

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