Mineralized gasification furnace

Mineralized Coal Gasifier Technical Process

Efficiently converting coal into clean energy through advanced mineralized coal gasification technology, achieving sustainable energy utilization

Raw Material Pretreatment

The first step in the mineralized coal gasifier system is the raw material pretreatment process. This involves crushing, screening and drying treatment of coal to ensure uniform particle size and appropriate moisture content. Coal is crushed to a particle size range suitable for gasification through advanced crushing equipment, then screened to separate qualified particles. The drying process reduces coal moisture content through hot air drying technology, improving gasification efficiency and energy conversion rate. The pretreated coal has uniform physical characteristics and stable chemical composition, creating good conditions for subsequent gasification process, ensuring stable system operation and efficient energy conversion.

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.

Raw Material Pretreatment

Coal Crushing, Screening and Drying Treatment

Gasifier Conversion

Gasification Reaction Under High Temperature and Pressure Conditions

Crude Gas Purification

Dust Removal and Desulfurization Treatment

Refining and Utilization

Syngas Refining and Diversified Applications

Project Advantages and Economic Benefits

Mineralized coal gasifier technology brings multiple benefits to energy, environmental protection and economic fields

Economic Benefit Analysis

Mineralized coal gasifier projects have significant economic benefits. In terms of investment return, the investment payback period for small and medium-sized gasification projects is usually 4-6 years, and large projects can recover investment within 5-7 years. In terms of operating costs, coal raw material costs are relatively stable, and gasification technology can achieve efficient utilization of resources. Taking a gasification project that processes 500 tons of coal per day as an example, the annual syngas production can reach 150 million cubic meters, with an annual output value of about 120 million yuan and an annual profit of 30-40 million yuan. In addition, the project can also enjoy national clean coal technology subsidies, tax incentives and other policy support, further improving the economic feasibility of the project. The promotion and application of mineralized coal gasification technology not only creates direct economic benefits but also drives the development of coal deep processing industry chain, forming a virtuous economic cycle.

Investment Return

Project investment payback period is usually 4-6 years, long-term operating income is stable and considerable.

Operating Costs

Raw material costs are relatively stable, mature technology and simple maintenance, overall operating costs are controllable.

Energy Level

At the energy level, mineralized coal gasifier technology achieves efficient and clean utilization of coal resources. Compared with traditional coal combustion technology, gasification technology converts solid coal into high-quality syngas, with comprehensive energy utilization rate reaching over 80%, much higher than the 30-40% of direct coal combustion. This technology can convert low-quality coal into gas that is easy to store, transport and use, improving energy density and usage flexibility. Mineralized coal gasifiers can provide stable and reliable clean energy supply, optimize energy structure, and reduce dependence on imported energy. At the same time, the decentralized utilization mode of coal gasification helps build a diversified energy supply system, improve the resilience and reliability of the energy system, and provide important guarantee for national energy security.

Efficient utilization of coal resources, improve energy self-sufficiency rate
Energy conversion efficiency up to over 800px
Provide stable and reliable clean energy supply

Environmental Level

In terms of environmental protection, mineralized coal gasifier technology has significant environmental benefits. Compared with traditional coal combustion, gasification technology can significantly reduce pollutant emissions, with sulfur dioxide emissions reduced by over 90%, nitrogen oxide emissions reduced by over 70%, and dust emissions reduced by over 95%. The pollutants generated during the gasification process undergo multi-stage purification treatment, and emission concentrations are far below national standards. In addition, gasification technology can achieve near-zero emission utilization of coal resources, and carbon dioxide emissions can be further reduced through carbon capture and storage technology. Mineralized coal gasification promotes the development of clean coal technology, achieves efficient and clean utilization of coal resources, reduces the environmental pressure of coal utilization, and provides a practical technical solution for building a resource-saving and environment-friendly society.

Significantly reduce pollutant emissions, far below national standards
Achieve clean and efficient utilization of coal resources
Promote circular economy development, achieve near-zero emissions

Economic Level

At the economic level, mineralized coal gasifier technology creates significant economic value. This technology extends the coal industry chain, increases the added value of coal, and increases the value of each ton of coal by 2-3 times. Gasification projects create a large number of employment opportunities, forming a complete industrial chain from equipment manufacturing, installation to operation and maintenance. Mineralized coal gasification technology is particularly suitable for areas rich in coal resources but relatively economically backward, which can effectively promote regional economic development and increase local fiscal revenue. In addition, the promotion and application of gasification technology reduces dependence on imported natural gas and oil, and improves the national energy trade balance. Mineralized coal gasification projects also have strong risk resistance capabilities, stable raw material supply, strong product market demand, providing investors with reliable investment returns.

Extend coal industry chain, increase resource added value
Create employment opportunities, promote regional economic development
Reduce energy import dependence, improve trade balance

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.

Mineralized Coal Gasifier

Mineralized Coal Gasifier Technical Process

Raw Material Pretreatment

Gasifier Conversion

initial purification

Final Purification

Raw Material Pretreatment

Gasifier Conversion

Crude Gas Purification

Refining and Utilization

Project Advantages and Economic Benefits

Economic Benefit Analysis

Investment Return

Operating Costs

Energy Level

Environmental Level

Economic Level

Successful Case Display

Gasifier Case One

Gasifier Case Two

Gasifier Case Three

Contact Us