Technological upgrading drives us to focus on "production process optimization" and reduce energy consumption and emissions from the source.Technological innovation is the core lever for energy conservation and carbon reduction, covering key links such as electrolysis, melting, and anode preparation, with a focus on breaking through the bottleneck of "high energy consumption and high emissions". In the future, aluminum smelting technology will presentLow carbonization of primary aluminum and aluminum recyclingDual track trend: Primary aluminum achieves deep decarbonization through "green electricity+inert anode", while recycled aluminum enhances product added value through "fine classification+efficient refining", ultimately promoting the transformation of the aluminum industry from "high carbon and high consumption" to "green and low-carbon".

Firstly, by optimizing the electrolyte system, the electrolyte temperature during the electrolysis process is reduced from the traditional 950 ℃ to 850 ℃, directly reducing the thermal radiation and conduction losses of the electrolytic cell and significantly improving energy utilization efficiency. According to industry estimates, this process can reduce energy consumption in electrolytic aluminum production by 15% -20%. Secondly, compared to traditional carbon anodes, inert anodes (such as Cu Ni Fe alloys, SnO ₂ - based ceramics) do not participate in electrolytic side reactions and have no anode consumption, which can eliminate the CO ₂ emissions generated by traditional carbon anodizing. Combined with energy flow optimization and waste heat recovery technology (such as centralized recovery of high-grade waste heat generated during the electrolysis process for raw material preheating, auxiliary equipment power supply, etc.), further reduce energy waste throughout the entire process.

Collaborative treatment of multiple pollutants

For the emissions of SO ₂, fluoride, and particulate matter from electrolytic aluminum, a combination process of "dry adsorption+bag dust removal+desulfurization tower" is adopted, with a SO ₂ removal rate of over 98%.

Aluminum has numerous advantages, such as unlimited recycling capacity, making it one of the commonly used raw materials in the world. HereMainly electrolytic aluminumTo unfold, electrolytic aluminum is aluminum obtained through electrolysis. The production of electrolytic aluminum industry adopts the alumina molten salt electrolysis method, which uses fluorite salt mainly composed of cryolite as the flux and alumina as the melt to form a multiphase electrolyte system.

The electrolytic aluminum industry has a significant impact on the environment and belongs to a high energy consuming and high polluting industry. The atmospheric pollutants emitted in the production of electrolytic aluminum include sulfur dioxide, fluoride, particulate matter, asphalt smoke, carbon dioxide, etc.

In response to the strengthening of environmental supervision by the government, electrolytic aluminum enterprises, as one of the key industry units for environmental emissions, actively take measures to improve and stabilize emission standards. To succeed in this field, one must achieve scientific governance, speak with data, and use precise measurement techniques.

Electrolytic aluminum smelting production is a high energy consuming process that generates a large amount of waste gas. The "Aluminum Industry Pollutant Emission Standards" clearly stipulate the emission limits, monitoring and surveillance requirements for air pollutants in aluminum industry enterprises, including particulate matter, fluoride, sulfur dioxide, etc.

In addition, carbon dioxide and carbon monoxide gases generated during the consumption of carbon electrodes; The combustion temperature during aluminum production may also lead to an increase in nitrogen oxide content. Carbon dioxide is the main gas causing the greenhouse effect. Nitrogen oxides and sulfur dioxide are the main substances that form acid rain. During the emission process, a large amount of smoke and dust will be generated, forming particulate matter in the air and causing the impact of PM2.5.

Enterprises must regularly monitor and analyze all these parameters, and optimize flue gas treatment as needed. Only in this way can we ensure compliance with strict environmental regulations and ensure the efficiency of the electrolytic furnace.

Professional matters are entrusted to professional equipment. At this time, it is particularly important for electrolytic aluminum plants to choose suitable flue gas measuring instruments. It should be stable, accurate, comprehensive, and convenient.

The Detu testo 350 portable flue gas analyzer is an ideal tool for professional flue gas analysis. This instrument can be used to optimize the operation of anode furnaces, monitor adsorption reactors, and control related limits.

Sensor advantages

The parameters that need to be measured for the anode furnace are as follows: O₂、CO₂ (IR), CO, and SO₂The analysis box of testo 350 has six slots, allowing for free placement of CO and SO₂、CO₂(IR)、CO_low、NO、NO_low、NO₂And H₂S gas transmitter.

Users can replace all gas sensors and other accessories by themselves. Among the six smoke component sensors, O₂The sensor is fixed in the fourth slot position and can continuously record important measurement parameters.

This feature is of great significance because at lower O2 levels, the formation of soot can affect the quality of aluminum. In the case of high concentration CO, testo 350 is equipped with a new anti-interference SO₂Sensors can accurately measure SO₂Concentration is more conducive for enterprises to understand the emission concentration.

Meanwhile, CO₂It is also an important cause of greenhouse effect, and its concentration needs to be understood. CO of Detu NDIR₂Sensors, configured in testo 350, can measure CO together₂Concentration. When measuring high concentration fixed pollution source exhaust gas, the functions of sensor single tank dilution and full tank dilution can be used to prevent damage to the sensor caused by high concentration gas, in order to complete the measurement task without affecting the measurement results.

Not afraid of high dust and high humidity

Easy to operateReliable design