In order to speed up the progress of energy-saving technologies, the energy-using units will be guided to adopt advanced and applicable new energy-saving technologies, new equipment and new technologies. Recently, the National Development and Reform Commission has compiled the “National Key Energy-Saving and Low-Carbon Technology Promotion Catalogue (2017, Energy Saving Part)” (hereinafter referred to as "directory"), "directory" involving coal, electricity, iron and steel, nonferrous metals and other 13 industries, a total of 260 key energy-saving technologies, including iron and steel industry 29, "China Metallurgical gold report," China steel News network Xiaobian will organize the details as follows -

1. High temperature and high pressure dry quenching device

Scope: apply to the steel industry with an annual output of coke and more than 1.9 million t coking plant.

Main technical contents: Cooling red hot coke with circulating gas, while recovering sensible heat to produce high temperature and high pressure steam for enterprises to use or generate electricity.

It is estimated that in the next five years, the technology will be promoted in the industry by 20%, with a total investment of 100 million yuan, which can save 510,000 tce/a, and the estimated carbon dioxide emission reduction capacity is 1.25 million tCO2 /a.

2. Sintering waste heat power generation technology in the steel industry

Scope of application: steel industry.

Main technical content: The use of low-temperature (200-400 °C) waste flue gas in the steel industry to generate steam.

The sintering, smelting, heating and other equipment of iron and steel enterprises produce a large amount of low-temperature exhaust gas, which is basically not used reasonably. Therefore, its promotion prospect is broad and the energy saving potential is huge. It is estimated that in the next five years, the technology will be promoted in the industry by 40%, with a total investment of 1.7 billion yuan, which can form an energy saving of 150,000 tce/a, and an estimated CO2 emission reduction capacity of 410,000 tCO2 /a.

3. Converter gas dry recovery technology

Scope of application: The steel industry converter once a flue gas.

The main technical content: by evaporative cooling, the flue gas of about 1000 ° C is cooled to about 250 ° C and coarse dust removal, the dust is finely removed by the electrostatic precipitator, and then the fan is further introduced into the chimney or enters the gas cooler to further cool the flue gas. recycle and re-use.

It is estimated that in the next five years, the technology will be promoted in the industry by 60%, with a total investment of 200 million yuan, which can form an energy saving of 250,000 tce/a, and an estimated CO2 emission reduction capacity of 660,000 tCO2 /a.

4. One of regenerative combustion technologies: regenerative rotary hearth furnace to treat metallurgical dust recovery iron and zinc technology

Scope of application: steel industry, steel metallurgy industry.

The main technical content: the regenerative combustion technology is applied to the direct reduction process of the rotary hearth furnace, and the process is optimized and improved to achieve the purpose of recycling and utilizing the zinc and iron resources in the metallurgical dust, and at the same time achieving energy saving.

It is estimated that in the next five years, the proportion of the technology in the industry will reach 80%, with a total investment of 510 billion yuan, which can save 220,000 tce/a, and the estimated carbon dioxide emission reduction capacity is 590,000 tCO2 /a.

5. Regenerative combustion technology II: no bypass, unpaired reversing heat storage combustion energy-saving technology

Scope of application: steel industry, steel, non-ferrous metals, machinery, building materials, petrochemical and other industries, industrial furnaces.

Main technical content: Three or more regenerative burners are used as a group. Each burner cycle alternately switches the state of combustion or exhaust, increases the area of ​​the exhaust passage, cancels the auxiliary flue, and the high-temperature flue gas is stored in the regenerator. After the heat is discharged, the utilization rate of the waste heat of the flue gas is effectively improved, and the ignition and the protection of the cold air volume are reduced, and the cooling by the cold air is reduced, thereby achieving comprehensive energy conservation.

It is estimated that in the next five years, the technology will be promoted in the industry by 2%, with a total investment of 1 billion yuan, which can form an energy saving of 1.4 million tce/a, and an estimated CO2 emission reduction capacity of 3.7 million tCO2 /a.

6. Coking coal humidity control air selection technology

Scope of application: steel industry, coking industry and coal chemical industry.

Main technical content: The raw coal is graded and moderately dried by coke oven flue gas.

It is estimated that in the next five years, the technology will be promoted in the industry by 50%, with a total investment of 1.56 billion yuan, which can form an energy saving of 2 million tce/a, and an estimated carbon dioxide emission reduction capacity of 5.28 million tCO2 /a.

7. Steel industry energy management technology

Scope of application: steel industry, metallurgical chemical and other process industries.

Main technical content: The use of information technology to implement enterprise-wide control of enterprise energy systems can reduce the annual energy consumption of enterprises by 1-3%.

It is estimated that in the next five years, the technology will be promoted in the industry by 60%, with a total investment of 1 billion yuan, which can form an energy saving of 2.7 million tce/a, and an estimated CO2 emission reduction capacity of 7.13 million tCO2 /a.

8. Blast furnace blast dehumidification energy-saving technology

Scope of application: steel industry.

The main technical content: pre-cooling the humid air before entering the blower, and then cooling by the air cooler, the excess saturated water in the humid air is condensed and discharged through the water remover, so that the water content in the air is reduced.

It is estimated that in the next five years, the technology will be promoted in the industry by 10%, with a total investment of 1.5 billion yuan, which can form an energy saving of 750,000 tce/a, and an estimated CO2 emission reduction capacity of 1.83 million tCO2 /a.

9. Screw expansion power drive energy-saving technology

Scope of application: Steel industry, industrial low-grade waste heat resources recycling, suitable for steel, metallurgy, electric power, petroleum and petrochemical, building materials, paper, medicine and other high-energy industries or geothermal , solar heat, biomass and other industries.

The main technical content: the use of steam, hot water, hydrothermal or vapor-liquid two-phase fluids in the industry to convert thermal energy into kinetic energy, drive generators to generate electricity or directly drive mechanical equipment.

It is estimated that in the next five years, the technology will be promoted in the industry by 80%, with a total investment of 2.5 billion yuan, which can form an energy saving of 670,000 tce/a, and an estimated carbon dioxide emission reduction capacity of 1.77 million tCO2 /a.

10. Mine heat furnace flue gas waste heat utilization technology

Scope of application: steel industry, ferroalloy and chemical industry calcium carbide.

The main technical contents: the process of sealing and exporting the flue gas of the submerged arc furnace to improve the status of unorganized discharge of the submerged arc furnace; according to the existing dust removal conditions of the submerged arc furnace, while recovering the waste heat of the flue gas, the dust removal problem of the heating surface of the waste heat boiler Improve heat utilization efficiency.

It is estimated that in the next five years, the technology will be promoted in the industry by 80%, with a total investment of 1.10 billion yuan, which can form an energy saving of 1.05 million tce/a, and an estimated CO2 emission reduction capacity of 2.77 million tCO2 /a.

11. Unsteady heat recovery and saturated steam power generation technology

Scope of application: Recycling of unstable waste heat resources generated in the steel industry, steel, non-ferrous metals, petrochemical, building materials, chemical, textile and other industries.

Main technical content: Unsteady heat is generated by the waste heat boiler to enter the heat storage device. The steady steam enters the steam turbine and becomes condensed water. After deoxidation, it returns to the waste heat boiler to start the next cycle. Unsteady heat recovery resources are converted into efficient use of electrical energy.

It is estimated that in the next five years, the technology will be promoted in the industry by 20%, with a total investment of 750 million yuan, which can form an energy saving of 300,000 tce/a, and an estimated carbon dioxide emission reduction capacity of 790,000 tCO2 /a.

12. Heating furnace black body enhanced radiation energy-saving technology

Scope of application: steel industry, various heating furnaces.

Main technical content: Install a certain number of black body components with high emissivity (above 0.95) in the top and side walls of the rolling steel heating furnace to increase the radiation area and effective radiation, improve the heating quality and reduce fuel consumption.

It is estimated that in the next five years, the technology will be promoted in the industry by 40%, with a total investment of 1.2 billion yuan, which can form 2.2 million tce/a of energy saving. The estimated carbon dioxide emission reduction capacity is 5.81 million tCO2 /a.

13. Steel water vacuum cycle degassing process dry (mechanical) vacuum system application technology

Scope of application: RH process, VD and VOD process in the steel industry, steel refining technology.

The main technical content: Roots pump combined with screw pump, using the Roots pump to "pressurize" the RH process exhaust gas to meet the requirements of high pumping capacity, using the screw pump to compress the process exhaust gas to above atmospheric pressure and discharge, to meet the RH process vacuum High and fast vacuum requirements.

It is estimated that in the next five years, the technology will be promoted in the industry by 10%, with a total investment of 660 million yuan, which can form an energy saving of 80,000 tce/a, and an estimated CO2 emission reduction capacity of 210,000 tCO2 /a.

14. Optimization technology of combustion system for carbon ring roaster

Scope of application: steel industry, carbon furnace roasting furnace combustion system and furnace cover energy-saving transformation.

The main technical content: by collecting furnace chamber temperature and pressure parameters, automatically adjust the amount of gas and the amount of flue gas, accurately control the furnace chamber temperature, thereby improving the combustion efficiency of gas and asphalt smoke, reducing heat loss, and achieving energy saving and emission reduction.

It is estimated that in the next five years, the technology will be promoted in the industry by 60%, with a total investment of 100 million yuan, which can save 390,000 tce/a, and an estimated CO2 emission reduction capacity of 1.03 million tCO2 /a.

15. Ring cooling machine liquid sealing technology

Scope of application: steel industry, sintering process sinter cooling.

The main technical content: two-phase dynamic balance sealing technology; efficient heat transfer technology; airflow equalization processing technology; composite static sealing technology; liquid anti-vaporization technology in high temperature flue gas circulation area.

It is estimated that in the next five years, the technology will be promoted in the industry by 30%, with a total investment of 100 million yuan, which can save 100,000 tce/a, and an estimated CO2 emission reduction capacity of 260,000 tCO2 /a.

16. Energy-saving technology of rotary cutting high-temperature top-top burning hot stove

Scope of application: steel industry, hot blast stove renovation of large blast furnaces.

Main technical contents: using rotary cutting burner, lattice brick, multi-hole furnace, hot air duct expansion and tensioning device, high calorific value gas time-division combustion, mathematical model control and other techniques to improve wind temperature and reduce blast furnace smelting coke ratio Effectively improve the thermal efficiency of the system.

It is estimated that in the next five years, the technology will be promoted in the industry by 80%, with a total investment of 1.08 billion yuan, which can save 1.18 million tce/a (only 1000 m3 or more blast furnace). The estimated CO2 emission reduction capacity is 3.12 million tCO2 /a. .

17. Medium and low temperature solar industry thermal application system technology

Scope of application: Steel industry, industrial solar system combined with coal, gas, fuel oil industrial boilers.

Main technical contents: increase the absorption ratio and vacuum degree of glass vacuum tube, adopt CPC reflector; instantaneous efficiency is not lower than 0.45 when working temperature is 80 °C-120 °C; large-scale collector array technology; multi-point temperature, pressure, anti-freezing system Automatic control technology.

It is estimated that in the next five years, the technology will be promoted in the industry by 10%, with a total investment of 500 million yuan, which can save energy of 710,000 tce/a (only 1000 m3 or more blast furnace). It is estimated that the carbon dioxide emission reduction capacity will be 1.87 million tCO2 /a. .

18. Gas turbine duty fuel replacement technology

Scope of application: steel industry, CCPP application areas.

The main technical content: the use of blast furnace gas instead of coke oven gas on duty, to achieve a two-way uninterrupted switching of gas. Achieve precise control of air-fuel ratio and reduce NOx production. Reduced plant power consumption. At the same time, the operational stability of the power generation equipment is increased.

It is estimated that in the next five years, the technology will be promoted in the industry by 40%, with a total investment of 116 million yuan, which can form an energy saving of 200,000 tce/a (only 1000 m3 or more blast furnace). It is estimated that the carbon dioxide emission reduction capacity is 530,000 tCO2 /a. .

19. Application technology of metallurgical waste heat and residual pressure energy recovery coaxial unit

Scope of application: steel industry, blast furnace blast and waste heat residual energy recovery.

Main technical contents: blast furnace blast furnace energy recovery unit (BPRT technology) with gas turbine and motor coaxial drive, gas turbine and motor coaxial drive blast furnace blower group technology (BPRT), which directly converts residual pressure and residual heat of blast furnace gas Energy-saving device for mechanical energy.

It is estimated that in the next five years, the technology will be promoted in the industry by 50%, with a total investment of 100 million yuan, which can form an energy saving of 900,000 tce/a (only 1000 m3 or more blast furnace). It is estimated that the carbon dioxide emission reduction capacity will be 2.88 million tCO2 /a. .

Scope of application: low-grade heat energy recovery and sintering main exhaust fan of the 130-500m2 sintering production line of the steel industry and metallurgical sintering system.

The main technical content: sintering waste heat energy recovery drive technology (SHRT technology), the sintering waste heat steam turbine, the sintering main exhaust fan and the synchronous motor are arranged in series coaxially to form a new three-unit (SHRT) for sintering waste heat and sintering main exhaust fan energy recovery.

It is estimated that in the next five years, the technology will be promoted in the industry by 20%, with a total investment of 200 million yuan, which can form energy saving 400,000 tce/a (only 1000 m3 or more blast furnace). The estimated carbon dioxide emission reduction capacity is 2.93 million tCO2 /a. .

20. High-temperature flue gas dry purification and recycling technology for fully enclosed ore furnace

Scope of application: in the steel industry, chromium , silicon, manganese and other ferroalloy smelting flue gas purification and recovery and comprehensive utilization.

Main technical content: Using the fully enclosed ore furnace smelting and control technology, the high-temperature soot produced by smelting, which is usually directly emptied, is dry-purified by FeAl intermetallic compound asymmetric filter, and the purified flue gas is transported to It is stored in a gas cabinet and recycled for power generation and sinter chrome ore sintering.

It is estimated that in the next five years, the technology will be promoted in the industry by 30%, with a total investment of 2.28 billion yuan, which can save 1.29 million tce/a (only 1000 m3 or more blast furnace). It is estimated that the carbon dioxide emission reduction capacity is 3.4 million tCO2 /a. .

21. Energy-saving technology of new high thermal conductivity and high density silicon brick for large coke oven

Scope of application: steel industry, coke oven production.

Main technical content: highly densified high thermal conductivity of the refractory brick to replace traditional silica bricks, silica bricks higher thermal conductivity of the carbonization chamber; glazed door hanging preform using conventional clay brick block Alternatively, the improved oven door Sealing and effectively reducing heat radiation, thereby reducing fuel consumption and achieving energy saving.

It is estimated that in the next five years, the technology will be promoted in the industry by 15%, with a total investment of 3.6 billion yuan, which can form energy saving 960,000 tce/a (only 1000 m3 or more blast furnace). It is expected that the carbon dioxide emission reduction capacity will be 2.53 million tCO2 /a. .

22. Blast furnace slag water direct heat recovery recovery waste heat technology

Scope: metallurgical industry iron, copper smelting blast furnace slag and other production process water heat recovery.

Main technical content: The blast furnace slag water is often filtered for direct heating or heat exchange heating, and the utilization rate is relatively low. The technology adopts a self-developed special slag water heat exchanger, which can directly enter the heat exchanger for heat exchange without filtering, and is used for heating or power generation, avoiding the occurrence of siltation and blockage in the pipeline or heat exchange equipment, and frequently taking less heat from the filter recoil. Produce secondary pollution and other problems, reduce heat loss in filtration and other aspects, and effectively improve heat transfer efficiency.

It is estimated that in the next five years, the technology will be promoted in the industry by 50%, with a total investment of 2.6 billion yuan, which can save 1.43 million tce/a (only 1000 m3 or more blast furnace). It is expected to reduce energy consumption by 3.78 million tCO2 /a. .

23. Coke oven carbonization room waste gas recovery and pressure automatic adjustment technology

Scope of application: steel industry, coking process.

Main technical content: According to the change of gas volume in the carbonization chamber of each hole, the opening degree of the bridge water seal valve disc is adjusted in real time, and the pressure of the carbonization chamber in the entire coking cycle is adjusted to avoid excessive pressure in the carbonization chamber at the initial stage of coal charging and coking. The gas and smoke are leaked out, and the waste gas in the carbonization room is greatly reduced to the combustion chamber, and the coal dust and dust control and the coke oven pressure are stabilized.

It is estimated that in the next five years, the technology will be promoted in the industry by 20%, with a total investment of 650 million yuan, which can form an energy saving of 100,000 tce/a (only 1000 m3 or more blast furnace). It is estimated that the carbon dioxide emission reduction capacity will be 260,000 tCO2 /a. .

24. Cold paste overall optimization molding furnace energy-saving technology

Scope: iron and steel industry, iron and steel, nonferrous metals, chemical industry, iron alloy, yellow phosphorus, rare earth metal smelting furnace.

The main technical content: the whole furnace is built with cold paste, the material quality is uniform and the structure is dense, and the different materials are seamlessly bonded, which avoids the problem of the connection paste damage and uneven current distribution of the traditional furnace building process, enhances the heat preservation performance of the furnace body, and improves the electric furnace. The heat balance effectively reduces the processing power consumption.

It is estimated that in the next five years, the technology will be promoted in the industry by 40%, with a total investment of 200 million yuan, which can form 800,000 tce/a (only 1000 m3 or more blast furnace), and the estimated CO2 emission reduction capacity is 2.1 million tCO2 /a. .

25. Sintering waste heat recovery cycle utilization technology

Scope of application: steel industry, sintering process.

Main technical content: When the low-temperature exhaust gas is discharged from the sintered branch bellows/ring cooler and then introduced into the sintered layer again, the low-temperature sensible heat can be supplied to the sintering mixture due to the heat storage and the automatic heat storage of the sintered layer. . At the same time, organic pollutants such as dioxins, PAHs, and VOCs in the hot exhaust gas are decomposed when passing through a sintering zone of the sinter layer up to 1200 ° C. Therefore, the exhaust gas cycle sintering can not only realize the utilization of waste heat, but also can greatly reduce the total amount of exhaust gas emissions.

It is estimated that in the next five years, the technology will be promoted in the industry by 30%, with a total investment of 200 million yuan, which can save 420,000 tce/a (only 1000 m3 or more blast furnace). It is expected to reduce carbon dioxide emission by 920,000 tCO2 /a. .

26. No induced draft fan without reversing valve regenerative combustion energy-saving technology

Scope of application: metallurgical industry, stoneware, tundish roaster, heating furnace, annealing furnace, quenching furnace and other stone chemical industry and power industry flame combustion energy-saving applications.

Main technical content: The self-priming combustion technology is used to significantly reduce the power of the combustion-supporting fan and improve the efficiency of the burner. The new double-channel regenerator is used to realize the regenerative baking of the non-commutated valve, and the exhaust temperature of the hot exhaust gas is significantly reduced, saving gas. . The automatic air induction is realized by forming a certain pressure change by the temperature difference between the inlet of the hot exhaust gas and the exhaust port, and a part of the air volume of the combustion air fan is divided as a power source to form a certain gravity, thereby realizing the heat storage without the induced draft fan and saving electric energy.

It is estimated that in the next five years, the technology will be promoted in the industry by 30%, with a total investment of 624 million yuan, which can form an energy saving of 940,000 tce/a (only 1000 m3 or more blast furnace). The estimated carbon dioxide emission reduction capacity is 2.47 million tCO2 /a. .

27. Coke oven waste gas sensible heat recovery and utilization technology

Scope of application: steel, coking industry, coke oven waste gas waste heat recovery.

Main technical content: The coke oven waste gas is exchanged with the demineralized water by the riser heat exchanger to generate saturated steam, and part of the waste gas is sensible heat recovery to realize energy saving.

It is estimated that in the next five years, the technology will be promoted in the industry by 50%, with a total investment of 500 million yuan, which can form an energy saving of 1.85 million tce/a (only 1000m3 or more blast furnace). The estimated carbon dioxide emission reduction capacity is 4.88 million tCO2/a.

28. Intelligent large-scale blast furnace energy-saving technology based on furnace belly gas volume index optimization

Scope of application: steel industry, blast furnace ironmaking.

Main technical contents: Optimized and upgraded on the basis of traditional blast furnace ironmaking process, established a high-efficiency and low-consumption theoretical system with the core gas volume index as the core, and developed a large blast furnace type based on the theory of the belly gas index and the simulation of the blast furnace. Optimized technology and intelligent production control system with higher accuracy to achieve more stable and efficient production of blast furnace and reduce process energy consumption.

It is estimated that in the next five years, the technology will be promoted in the industry by 23%, with a total investment of 3.4 billion yuan, which can form 3.24 million tce/a (only 1000 m3 or more blast furnace), and the estimated CO2 emission reduction capacity is 8.55 million tCO2 /a. .

29. High radiation coating technology

Scope of application: steel industry.

Main technical contents: coating a surface of the regenerator of blast furnace hot air stove, coke oven and heating furnace with a coating with higher emissivity than the substrate to improve the heat absorption and heat radiation efficiency of the regenerator, reduce heating time and reduce the row Smoke temperature and fuel consumption.

It is estimated that in the next five years, the technology will be promoted in the industry by 30%, with a total investment of 450 million yuan, which can form 1.1 million tce/a (only 1000 m3 or more blast furnace). It is expected to reduce carbon dioxide emission by 2.9 million tCO2 /a. .

Scope of application: petrochemical industry, petroleum, chemical, metallurgical and so on.

The main technical content: the use of high emissivity energy-saving materials, increase the radiant heat of the lining and the absorption capacity of the furnace tube, improve the heat utilization rate of the furnace and reduce fuel consumption.

It is estimated that in the next five years, the technology will be promoted in the industry by 10%, with a total investment of 165 million yuan, which can save 160,000 tce/a (only 1000 m3 or more blast furnace). It is expected to reduce CO2 emission by 420,000 tCO2 /a. .

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