Xuetao Solves Flue Gas Problems for Harbin Asphalt Recycling Plant

       Recently, Jiangsu Xuetao Heavy Industry Technology Co., Ltd., a subsidiary of Wuxi Xuetao Group, has officially put into operation an environmental-protection retrofitting project at an asphalt plant in Harbin. The project has completely resolved long-standing problems including nuisance-causing odors from asphalt recycling equipment and non-compliant environmental performance, setting a high-quality benchmark for environmental upgrading and compliant production in the asphalt recycling sector across frigid northern China.

       The original asphalt recycling mixing equipment at the Harbin asphalt plant was fitted with conventional flue-gas treatment devices with limited performance. During regular production, strong odors from asphalt recycling flue gas spread over a wide area, severely impacting the surrounding environment and triggering numerous public complaints. In response to this prominent environmental nuisance, local ecological and environmental authorities issued a special rectification notice, mandating the enterprise to upgrade its flue-gas treatment system within a deadline to eliminate odor pollution and safeguard residential living conditions; failure to comply would disrupt normal business operations.

       Asphalt recycling flue gas features complex components, high viscosity and persistent odor-causing compounds, making it a widely-recognized challenge in the industry. Conventional equipment such as dust collectors and adsorbers can only remove dust, yet cannot decompose organic waste gas and odor sources. This leads to the common predicament of “apparent treatment yet lingering odors”, which fails to meet today’s stringent environmental regulatory requirements.

       Tailored for the frigid-climate operating conditions and unique flue-gas characteristics of recycling equipment at this project, Jiangsu Xuetao Heavy Industry delivered a customized integrated comprehensive treatment system combining TO-furnace high-temperature incineration and waste-heat recovery. The system thoroughly decomposes organic waste gas and odor pollutants from asphalt recycling at the source via high-temperature pyrolysis, preventing odor leakage and dispersion. It is also equipped with a high-efficiency waste-heat recovery unit to recycle incineration heat and cut production-line energy consumption. The whole system delivers outstanding operational cost-effectiveness: flue-gas treatment costs merely 2 RMB per ton of finished material, achieving multiple advantages of environmental compliance, energy conservation and low-cost operation.

       To date, the full set of environmental equipment has been running stably for one week with remarkable on-site results: production-related odors within the plant have been completely eliminated, surrounding air quality has improved substantially, and no public complaints have been received. All indicators passed third-party testing and routine environmental inspections. The enterprise has fulfilled the government’s special rectification requirements, and production lines have resumed regular, compliant and stable operation. Environmental upgrading and safe production are both guaranteed without compromising original production capacity.

       The successful delivery of this Harbin project further demonstrates Jiangsu Xuetao Heavy Industry’s robust technical strength in dedicated asphalt recycling flue-gas treatment. Unlike general environmental-equipment manufacturers, Xuetao Heavy Industry has long-term expertise in asphalt mixing and recycling production processes and deep understanding of industry-specific pain points. Drawing on numerous mature completed projects nationwide including those in Shanghai, Suzhou and Harbin, the company has accumulated rich practical experience in flue-gas rectification under frigid-climate and high-difficulty working conditions.