I. Project Background: The Growing Need for Precise Monitoring at the Forefront of Urban Environmental Protection

As urbanization accelerates, the safe and environmentally sound disposal of solid waste has become a critical issue related to people's livelihoods and environmental security. Shanghai Municipal Solid Waste Disposal Co., Ltd., as a core operator of the city's environmental infrastructure, plays an important role in safeguarding the environment through its modern hazardous waste incineration facility.

During the incineration of hazardous waste, Secondary Combustion Chamber It is a critical component of the entire system. Its function is to ensure that flue gas undergoes complete combustion at high temperatures, thoroughly breaking down various harmful substances (such as dioxins, among others). And Oxygen content at the exit of the secondary combustion chamber It is a core parameter that directly reflects combustion efficiency, controls pollutant formation, and optimizes energy consumption. Continuous, accurate, and reliable monitoring of oxygen levels at this location is crucial for achieving automated control of the incineration process, ensuring emissions meet regulatory standards, and enhancing operational efficiency.

II. Facing Challenges: Measurement Difficulties Under Extreme Conditions

The operating conditions at the exit of the secondary combustion chamber are extremely harsh, posing significant challenges to measurement instruments:

1. Ultra-high-temperature environment : Flue gas temperature reaches as high as 1050℃ , far exceeding the direct tolerance range of conventional zirconia sensors.
2. High dust, high corrosivity : Flue gas contains large amounts of dust, acidic gases, and incompletely burned impurities, which can easily clog or corrode sampling probes and sensors, leading to inaccurate measurements or even instrument damage.
3. Requires continuous operation : Environmental monitoring requires instruments to be able to 7x24 Operates continuously and stably for hours, with extremely limited maintenance windows.

Traditional plug-in zirconia analyzers have an extremely short lifespan under these operating conditions, frequently experiencing issues such as probe sintering and sensor poisoning, making it impossible to meet the demands for long-term, reliable measurements.

III. Solution: Custom-Made High-Temperature Suction System

In response to the challenges mentioned above, Anhui Tianfen Instrument Co., Ltd. The technical team conducted an in-depth technical exchange with the client. After thoroughly understanding the on-site processes, our company recommended and provided a solution specifically designed for extreme high-temperature operating conditions.   “ High-Temperature Pumping-Type Zirconia Oxygen Analyzer ”  , and is equipped with Fully Automatic Purge and Cleaning System 。

The core advantage of this solution lies in:

1. High-temperature vacuum sampling : Utilizing a specially designed high-temperature sampling pump and heated pipeline system, up to 1050℃ The flue gas is drawn into the analyzer's main cabinet for analysis. This design ensures that the core zirconia sensor operates under optimal temperature conditions—after being cooled and filtered to remove impurities. Effectively prevents direct damage to the sensor caused by ultra-high temperatures. , significantly extending the sensor's lifespan.
2. Efficient Preprocessing and Automatic Purging : The system integrates a multi-stage, high-efficiency filtration unit that effectively removes dust from flue gas. Most importantly, the system is equipped with Fully automatic timed purging function , the sampling probe and filter can be regularly subjected to high-pressure back-blowing to remove accumulated dust, effectively addressing the industry's persistent issue of probe blockage and ensuring smooth sampling as well as continuous measurement.
3. High precision and reliability : Despite the sampling process, the system maintains continuous high-temperature heating throughout to prevent condensation and corrosion caused by acidic gases, ensuring the authenticity of the sample gas. Our company’s zirconia sensors utilize advanced, stable electrolyte materials, delivering high measurement accuracy, rapid response times, and consistently reliable output signals.

4. Professional Services: Technology Empowers, Creating Value

To ensure optimal system performance, Anhui Tianfen Instruments has dispatched senior technical engineers to provide On-site installation, debugging, and instruction services Engineers completed a series of tasks on-site, including equipment installation, pipeline laying, and system integration testing. They also provided comprehensive training to the customer’s operations and maintenance personnel, thoroughly explaining the equipment’s operating principles, essential daily maintenance practices, and effective troubleshooting techniques.

V. Application Results: Gained High Customer Recognition

Since the system was put into operation, it has demonstrated outstanding performance:

• Data is accurate and reliable. : It provides the central control system with continuous, real-time, and accurate oxygen content signals, serving as a crucial basis for operators to adjust the combustion air volume and optimize the burning process.
• Operating steadily and sustainably : Thanks to its vacuum design and automatic purging function, it effectively withstands harsh environments characterized by high temperatures and heavy dust levels, resulting in an extremely low failure rate and minimal maintenance requirements.
• Dual Benefits for Environmental Protection and Economic Growth : Helping the combustion system maintain optimal air-fuel ratio at all times—not only Ensured thorough decomposition of pollutants, meeting ultra-low emission standards. Meanwhile, it has improved combustion efficiency, reduced energy consumption, and delivered significant economic benefits.

Shanghai Municipal Solid Waste Disposal Co., Ltd. highly praised the stability and measurement performance of this zirconia oxygen analysis system, fully recognizing its outstanding capabilities. Anhui Tianfen Instrument Co., Ltd. Product quality and technical service standards.

This successful collaboration once again demonstrates Anhui Tianfen Instruments' deep-rooted technological expertise and extensive practical experience in the field of industrial process analysis, particularly in gas monitoring under extreme operating conditions. We are committed to providing our customers with Tailored solutions and reliable professional services , contributing to ensuring safe production in enterprises, enhancing process efficiency, and fulfilling environmental and social responsibilities “ Talent ” Strength.

Anhui Tianfen Instrument Co., Ltd.

Phone: 18225808093