The combustion furnace of sulfur production is the key equipment of sulfur recovery unit, and the operation of the combustion furnace directly affects the recovery rate of sulfur and the emission of sulfur dioxide. The raw material acid gas entering the device is burned in the furnace and converted into process gas, which is mainly composed of hydrogen sulfide and sulfur dioxide. The normal operating temperature of the process gas is about 1300℃, and the high temperature can reach 2000℃. The temperature of the sulfur combustion furnace is one of the key factors affecting the production efficiency and quality of sulfur. One of the most direct factors affecting the performance of the sulfur furnace is the refractory lining. The temperature of the erosion area is usually higher than that of other areas, and the erosion condition of the furnace can be judged by measuring the temperature of the furnace. So it is very important to monitor the temperature of sulfur furnace.

The traditional way is to use thermocouple or infrared point temperature meter to monitor the temperature of the sulfur burning furnace, these two ways can only obtain the temperature of a single part at a time, the efficiency is low and can not get relatively complete temperature information, increasing the instability factor. The use of infrared thermal imager for temperature monitoring can obtain more comprehensive temperature information, and it is obtained in real time, higher efficiency and higher data availability.

The advantages of infrared thermal imager in the application of sulfur burning furnace are as follows:

1. Multi-point monitoring: the infrared thermal camera can monitor the temperature of multiple points at a time, which can help the operator obtain the temperature of the sulfur making combustion furnace more comprehensively;

2. Non-contact monitoring: the infrared thermal imager can obtain accurate temperature information without contacting the measured object, which will not affect the normal operation of the sulfur burning furnace, and can also play a certain protective role for the safety of the staff;

3. Real-time generation of temperature data: the thermal imager is sensitive, can generate real-time temperature data and generate intuitive thermal imaging screen, the staff can at any time the temperature distribution and change;

4. Abnormal temperature warning: the infrared thermal camera can set the alarm temperature, when monitoring the temperature that is not within the process range or the temperature that the resistant material may be eroded, the system will issue an alarm to remind the staff to deal with it as soon as possible.

The use of infrared thermal imager to monitor the temperature of the sulfur burning furnace can detect the abnormal temperature of overheating or too low in the furnace, help the staff to adjust the combustion process in time, can monitor the erosion of resistant materials, help the staff to repair in time, and prevent the accident of wearing the bag. The application of infrared thermal imager in sulfur combustion furnace can optimize energy use, reduce energy cost and improve production efficiency.