1、 Overview of online monitoring technology for ammonia escape
Ammonia escape online monitoring technology is an important means of real-time and continuous monitoring of ammonia concentration based on sensor technology. This technology is widely used in industrial fields such as fertilizer production, waste incineration, thermal power generation, and chemical engineering. It can effectively assist enterprises in implementing ultra-low emission and precise pollution control requirements, and has important practical significance for controlling ammonia emissions, improving atmospheric environmental quality, and ensuring human health. In line with the current national environmental policy orientation of continuously promoting pollution prevention and strengthening precise monitoring of industrial sources.

2、 Technical principles
The core principle of this technology is to use high-sensitivity sensors to achieve real-time measurement of ammonia concentration through the interaction between gas and electrodes or laser beams. The mainstream technologies mainly include:

• Electrochemical sensorBy detecting the charge transfer between gas and electrode to determine concentration, it has the characteristics of fast response and high sensitivity;

• Laser Spectral Analyzer(such as TDLAS technology): Using tunable semiconductor laser absorption spectroscopy, accurate inversion of gas concentration is achieved by analyzing the attenuation of laser intensity, which has the advantages of high accuracy, good stability, and strong anti-interference ability.
  The Xinze Instrument ammonia escape online monitoring system adopts TDLAS technology, combined with high-temperature heat tracing and dust filtration design, suitable for complex working conditions such as high dust, high humidity, and corrosiveness, and can achieve long-term stable and accurate ammonia escape monitoring.

3、 System composition
A complete ammonia escape online monitoring system typically includes the following components:

1. Sampling and preprocessing unitResponsible for extracting and purifying gas from the flue or pipeline, ensuring that the gas entering the analyzer meets the detection requirements.

2. Sensors/analyzersThe core monitoring unit measures ammonia concentration in real-time and transmits the signal to the data acquisition system.

3. Data Collection and Processing SystemReceive, store, and analyze monitoring data, calculate ammonia escape rate, and have report generation and historical query functions.

4. Alarm and warning systemWhen the concentration exceeds the set threshold, an automatic sound and light alarm and remote notification will be triggered, supporting a graded warning mechanism.

5. Control and Feedback Unit(Optional): Based on the monitoring results, adjust the ammonia injection system in conjunction to achieve automatic control, help optimize denitrification operation, and reduce ammonia consumption.
   The Xinze instrument system integrates intelligent diagnosis and automatic calibration functions, significantly reducing maintenance requirements, supporting online uploading to the environmental supervision platform, and meeting the requirements of environmental data networking.

4、 Installation and operation points

1. Equipment installation：

• It should be placed in a well ventilated, dry and vibration free place, avoiding direct sunlight and high temperature environments.

• The sampling probe must be installed on a representative monitoring section to ensure that the data truly reflects the emission situation.

• The power and signal lines should be laid in a standardized manner, and anti-interference and protective measures should be taken.

2. Startup and operation：

• After powering on, confirm that the device self-test is normal, and perform initial calibration and parameter settings according to the regulations.

• Connect the sampling system, start monitoring and data recording, and monitor the trend of data changes in real time.

5、 Maintenance and upkeep

1. regular inspection：

• Check the sealing of the air path, the blockage of the filter element, and the degree of dust accumulation on the probe, and clean or replace them in a timely manner.

• Clean the optical window or sensor surface to keep the measurement light path unobstructed.

2. Calibration and Debugging：

• Regularly use standard gases for calibration to ensure measurement accuracy.

• Optimize the measurement range and alarm threshold based on process changes.

3. emergency response：

• In case of emergency situations such as ammonia leakage, the equipment power should be cut off first and the enterprise safety emergency plan should be activated.

• Quickly isolate the source of pollution, organize personnel evacuation, and provide necessary health protection.

The Xinze Instrument ammonia escape online monitoring system is characterized by reliable monitoring, low maintenance design, and intelligent management, providing strong technical support for enterprises to achieve ammonia escape control and environmental compliance operation, and meeting the current sustainable development requirements of green production and ultra-low emissions.

SINZEN Xinze Instrument