In recent years, the Academician Zhang Qisheng and the Hefei Debo Bioenergy Technology Co., Ltd. jointly developed the gasification electric/heat/carbon-based fertilizer co-production technology (referred to as biomass gasification technology) to convert biomass into gas and biochar. In turn, electricity, heat and biochar based fertilizers have been obtained, which has found a new way for biomass utilization. The technology has been piloted in Hunan, Jiangxi, Jiangsu, Hebei and other provinces, but as a way to solve the problem of straw burning, greatly reduce the emission of air pollutants, increase the proportion of clean energy use in China, and promote the upgrading of agricultural industry. The high-tech, its attention and promotion efforts are far from enough.
Biomass gasification technology has many advantages and high value
The principle of biomass gasification electric/heat/carbon-based fertilizer co-production technology is to use thermal chemical conversion method to separate volatile matter and fixed carbon in biomass, and pyrolysis and pyrolysis gasification into biomass gas, complete conversion of fixed carbon Become a biochar. Biomass gas can be directly sent to boilers and other energy-consuming equipment for combustion and utilization, or cooled and purified and sent to the internal combustion generator set for power generation; biochar is rich in micropores and mesopores, and is made of carbon-based fertilizer together with NPK. Realizing slow fertilizer release, soil water retention and soil remediation. Compared with slow release agents made of polymer materials, biochar is cheaper and comes entirely from biomass itself, without any harm to the soil. Application will significantly improve soil status and increase soil fertility.
"From the perspective of business model, electricity is the best commodity, convenient for consumption, and not prone to problems; charcoal-based fertilizer made from biochar can be used in local farmland, avoiding large-scale transportation." National People's Congress, Anhui Chen Guanghui, chairman of Huangshan City Multidimensional Bio Group and chairman of Huangshan Xiuning Xinlincao Farmers Professional Cooperative, said in an interview with China Electric Power News during the two sessions.
Nanjing Forestry University uses carbonaceous carbon as raw material to make carbon-based compound fertilizer (carbon is 20%~30%). After years, it has been tested in joint agricultural colleges, agricultural academies and local agricultural departments in different planting areas in China. The application of carbon-based fertilizer has the following advantages: increasing soil porosity, solving soil acidification problems, and increasing trace elements, improving fertilizer utilization, increasing water content and saving water, adsorbing heavy metals in soil, increasing ground temperature, repairing soil microorganisms, and increasing agricultural output and Quality and so on. In terms of energy conservation and emission reduction, each ton of biochar can reduce carbon dioxide emissions by more than 2 tons.
Biomass gasification technology needs to be supported by many parties
In China, we vigorously promote clean energy production and promote clean energy power generation priority. In the context of “blue sky defense warâ€, biomass gasification technology can be used as a food waste. High-tech, "turning waste into treasure", its future market prospects are bright and huge.
Chen Guanghui said that the relevant departments should formulate the "Opinions on Supporting the Development of Forest Farmers' Biomass Resource Utilization Industry" as soon as possible, speed up the implementation of biomass application technology, and at the same time, relax market access according to the overall requirements of the State Council's "distribution service" reform. Simplify approval procedures, etc. Power grid enterprises and related departments should unite to establish effective and priority channels for the production of energy for biomass gasification technology, and clarify that relevant projects enjoy the price of agricultural and forestry biomass power generation and reduce the burden on enterprises, thus accelerating the promotion of this technology.
“On the other hand, the state should force fertilizer producers to add biomass charcoal to fertilizers. It is estimated that if 10% to 30% of biochar is added, the amount of fertilizer can be directly reduced by 10% to 30%. The application amount of fertilizer is about 60 million tons, which can reduce the traditional fertilizer application rate by 12 million tons per year. This means that the utilization efficiency of fertilizer is greatly improved, the production cost of fertilizer is reduced, and the soil and water pollution caused by excessive and inefficient fertilization are also Will be reduced," Chen Guanghui said.
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