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Solidwastepyrolysisgasification

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Registration number:G20250272

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Key words: pyrolysis gasification Solid waste treatment

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Publisher:管理人员

Release time:2025-08-09 08:49:43.0

  • Essential information
Name of achievement: Solidwastepyrolysisgasification
Result registration number: G20250272 Subject classification:
Green classification: Item keywords: pyrolysis gasification  Solid waste treatment      
Recommenders:

Xi'an Jiaotong University

The stage of achievement:
Mode of cooperation: TechnicalLicensing,TechnicalEquityInvestment Outcome Information:
Countries/regions: China Intellectual property rights: Invention patent, others
Introduction: Click to view
I. Project Introduction In recent years, the acceleration of urbanization in China has led to cities facing the problem of garbage encirclement. Beijing sees an annual increase of 500 acres of landfills; Xi'an's Jiangcun Gully landfill currently handles 9,000 tons per day and will reach saturation by 2021. The main methods for current domestic waste disposal are landfilling, composting, and incineration. Pyrolysis gasification was initially used for the dry distillation of wood and coal, but it generally produces products that include short-chain alkanes such as H2, CO, CO2, CH4, C2H4, as well as solid residues and liquid tar. Compared to incineration, pyrolysis gasification technology can effectively treat materials such as biomass, plastics, rubber, etc., and the combustion process does not require oxygen. The reaction is an endothermic process, mainly producing gas, oil, and carbon black, which are convenient for storage or long-distance transportation. Moreover, the secondary pollution is relatively small, making it suitable for handling domestic waste in villages, towns, counties, and cities. II. Technical Specifications (1) Comparison of Incineration and Pyrolysis Gasification (2) Product Analysis: A large amount of pyrolysis gas is produced when organic combustible waste undergoes thermal decomposition under anaerobic conditions, breaking chemical bonds and transforming macromolecules into small molecules such as CO, CH4, H2, etc., which are combustible gases. After pyrolysis purification, one ton of garbage can produce 1000 cubic meters of industrial gas with a calorific value greater than 1500 Kcal, which can be used for self-power generation or sold to the grid. For a city with daily garbage treatment capacity of 1000 tons, it can generate 365 million cubic meters of industrial gas per year, equivalent to about 70 million cubic meters of natural gas. Table 1 shows the main components of the gas (average gas production per ton of garbage is about 1200-1800 cubic meters). A small amount of pyrolysis tar; a small amount of pyrolysis coke: about 5-10% of the feedstock entering the pyrolysis furnace. Market Prospects and Applications Currently, many waste pyrolysis gasification projects in China are at the pilot stage. The technical process of this project has multiple independent patent rights that have been transformed and applied, such as the utility model patents 'Domestic Waste Bag-Breaking Machine' (CN205345542U) and 'Waste Plastic Film Waterless Cleaning Device' (CN205701722U), which are used in the production processes of domestic waste treatment plants at Guangdong Huaihuisheng Environmental Technology Co., Ltd. and Yunnan Yiji Environmental Technology Co., Ltd. The invention patent 'Combined Pyrolysis Gasification Furnace' (CN105505474A) has been applied in the tailings treatment process of a paper mill in Xinmi, Henan, generating substantial economic benefits. Through school-enterprise cooperation, pyrolysis equipment for tires, plastics, and plants has been exported to multiple countries. The project of supporting impoverished counties by Jiaotong University is being led: Shidian County Solid Waste Resource Utilization. Through fiscal subsidies, Shidian County invested more than 10 million yuan to build and put into use 45 rural garbage pyrolysis gasification furnaces, set up 100 large rural domestic garbage storage bins, over 700 household garbage cans, equipped with 8 garbage collection vehicles, and daily processes about 92 tons of garbage, solving the waste disposal problem for 140,000 people in 53 administrative villages. By adopting technology licensing and technology equity participation, signing project design intentions or technical output intentions, 5-8 standard model construction projects have been incubated and created. Efforts are made to further summarize and enhance the technological advancement, improve project equipment manufacturing and construction standards, replace traditional waste disposal models, and create a sustainable, low-carbon, and environmentally friendly governance benchmark.
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