• Heating furnace


    The core personnel are mainly from the former well-known metallurgical design institutes and industrial furnace companies in China. The core team has more than 15 years of experience in the industry, and the project has experienced hundreds of industrial furnaces. It has a solid technical level and rich project management experience. kiln, energy saving, emission reduction and environmental protection, etc., continue to develop and promote new technologies, and have won unanimous approval from customers. For various types of heating furnaces, we have profound technical reserves and accumulation of experience, especially when the pressure on energy conservation, emission reduction and environmental protection is becoming more and more stringent, we can also support customers in terms of heating furnaces: ——Gas blowback to solve the problem of regenerative heating furnace gas The problem of straight exhaust; - low nitrogen combustion, through the control during the combustion process,

  • Various types of steel rolling heating furnaces, heat treatment furnaces


    The following only lists some types of heating furnace projects: A. Slab furnace, walking furnace, end in and end out, conventional combustion (air preheating) B. Strip heating furnace, push steel furnace, end in and side out, double Regenerative C. Large rod heating furnace, walking furnace, side in and side out, single regenerative D. Rod and wire heating furnace, walking furnace, side in and side out, conventional combustion (air and gas double preheating) E. Pipe / Reheating furnaces such as round bars, quenching, tempering and other heat treatment furnaces

  • The application of dust and nitrate integrated type namely ceramic filter cartridge


    In the production process of iron and steel enterprises, according to the needs of the overall energy medium balance, various energy media such as blast furnace gas, converter gas, and coke oven gas will be used in various types of furnaces, such as hot blast stoves, power plant boilers, and rolling mill heating. In the production process of furnaces and kilns, the flue gas will contain various pollutants such as sulfide, nitrogen oxides, dust, etc. According to the requirements of the national environmental protection policy, various provinces, cities and regions are successively carrying out the control of flue gas pollutants; Among the many process routes for the treatment of sulfides, nitrogen oxides, dust and other pollutants, the two process routes of SDS dry desulfurization + dust collector + SCR denitration or fixed bed dry desulfurization + SCR denitration are the most extensive and common; we A dust-nitrile integrated process route is recommended, which, in comparison, occupi

  • Heating furnace flue gas fixed bed dry desulfurization


    Steel rolling heating furnaces are divided into regenerative heating furnaces and conventional heating furnaces according to different combustion methods; air and gas dual regenerative combustion technology is adopted, and the exhaust gas temperature is usually ~150℃; using air preheating technology, the exhaust gas temperature is usually ~ 300℃; in order to better and sustainable development of the ecological environment, China's national standard and many provincial and municipal landmarks have agreed on the emission index of heating furnace flue gas, and the trend of environmental protection is becoming more and more serious; therefore, the desulfurization treatment of heating furnace flue gas has been It is imperative; based on nearly 20 years of experience in general contracting of heating furnace projects and in-depth understanding of the heating furnace's own process, combined with the comprehensive application and practice of various forms of desulfurization, Shanghai Xuandin

  • Wet dust removal (slag/sintering/rolling mill)


    Application of wet dust removal technology 1. Environmental protection policy requires China Environmental Protection Industry Association to issue the "Technical Guidelines for Ultra-low Emission Transformation of Iron and Steel Enterprises" on January 9, 2020, which clearly proposes that rolling mill dust removal facilities should be built. The Ministry of Ecology and Environment and other five ministries and commissions jointly issued the "Opinions on Promoting the Implementation of Ultra-Low Emissions in the Iron and Steel Industry" (Huanqiqi [2019] No. 35), requiring steel enterprises across the country to gradually transform and significantly reduce emission levels. In June 2020, the Ministry of Ecology and Environment issued (extremely urgent) "Technical Guidelines for Formulating Emergency Emission Reduction Measures for Key Industries in Heavy Pollution Weather" (Huanqiqi [2020] No. 340). High-efficiency wet dust collector is used for waste gas from hot slag an

  • Heating furnace hydraulic potential energy recovery


    Stepping machinery occupies a large proportion in the metallurgical industry, and a large amount of "potential energy" released by these equipment during the descending process is converted into heat and "wasted"; the potential energy recovery technology developed by Shanghai Xuanding Technology is the most representative. Innovative technology can achieve energy saving of 30~60%; compared with the potential energy recovery solutions provided by other companies, Shanghai Xuanding's product features are as follows: 1. The potential energy cylinders involved in the system are all general-purpose hydraulic cylinders, no special customization is required, and the rest involve The hydraulic components, accumulator group, etc. are all conventional models, and the procurement of spare parts is convenient;

  • Integrated treatment of flue gas desulfurization, dust removal, and denitrification in heating furnaces


    The integrated treatment of desulfurization, dust removal and denitrification is the effect of flue gas end treatment and new technology prospects. In the production process of iron and steel enterprises, according to the needs of the overall energy medium balance, various energy media such as blast furnace gas, converter gas, and coke oven gas will be used in various Various types of kilns, such as hot blast stoves, power plant boilers, rolling mill heating furnaces, etc., during the production process of kilns, the flue gas will contain sulfides, nitrogen oxides, dust and other pollutants; according to the requirements of national environmental protection policies , various provinces, cities and regions are successively carrying out the control of flue gas pollutants;

  • Heating furnace low nitrogen combustion


    Apply natural gas, mixed gas and other low-nitrogen burners, nitrogen oxides ≤ 50-75PPM; use regenerative low-nitrogen burners, nitrogen oxides ≤ 50PPM; Shanghai Xuanding self-developed low-nitrogen burners, all through temperature field simulation , CFD calculation and analysis, and carry out prototype laboratory tests, and those who pass the indicators will be mass-produced for industrial applications; low-nitrogen burners are installed in the laboratory. Indicator test

  • Heating furnace gas blowback


    Gas backflushing is CO emission reduction technology 1. Current situation and problems Regenerative combustion technology has been widely used in various types of industrial furnaces. This combustion technology can make low calorific value gas such as blast furnace gas, producer gas, etc. It is used for billet heating without mixing other high calorific value gas, and the regenerative combustion technology can realize extremely low temperature emission of flue gas, realize waste heat recovery to the greatest extent, and achieve energy saving effect. However, the heating furnace applying the regenerative combustion technology generally has the following problems: as shown in the figure, every time the reversing valve switches, when a group (side) burner changes from the combustion state to the smoke exhausting state, the reversing valve reaches the storage state. The gas between the hot burners will be pumped away by the smoke exhaust system, and this area is called the "public area" (t

  • Blast Furnace Gas Equal Pressure Recovery and Air Discharge


    1. Production status and environmental protection requirements In the blast furnace smelting production process, the pressure-equalizing gas in the furnace top tank is usually discharged directly into the atmosphere after passing through the cyclone dust collector and the muffler. This part of the gas is toxic and contains a lot of CO and dust. , The mixed gas of combustibles causes pollution to the atmospheric environment, especially the blast furnace production area, and also wastes energy. With the increasingly strict environmental protection requirements, most regions and iron and steel enterprises now require the use of full recovery methods, and the blast furnace gas is not released during the whole process; 2. Basic principle equalization recovery part (full recovery): The pressure is consistent with the pressure in the furnace and is in a high pressure state, while the pressure in the gas recovery device connected to the atmospheric gas pipe network is in a normal pressure stat


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