The applications of fixed gas detectors in the industrial field and other industries
Due to the wide variety of chemicals involved in the industrial field, different BW fixed monitoring equipment can be equipped according to the specific chemicals or chemical gases that the factory is exposed to.
Petrochemical industry
More than 80% of the production areas in the petrochemical industry have the potential for flammability and explosiveness. According to the "Design Specification for Combustible Gas and Toxic Gas Detection and Alarm in Petrochemical Enterprises", the effective coverage radius of gas detectors on the horizontal plane is 7.5 meters indoors and 15 meters outdoors. At least one detector should be installed within the effective coverage area. In addition, detectors should be installed near the inlet and outlet valve groups of storage tanks, as well as in pump rooms, compressor rooms, and bottle filling room valve groups where there may be gas leaks.
In most cases, it is necessary to use BW LEL or IR to monitor for leaks of flammable gases. BW LEL or IR implements a second level alarm. When the concentration of combustible gas in the detected area reaches 10% LEL (low explosive limit) or 20% LEL, the monitor will issue a second level alarm. The alarm limit can also be adjusted according to user requirements.
For toxic and harmful volatile organic compounds such as benzene, toluene, aniline, carbon disulfide, etc. involved in the production process, BW PID monitoring should be used to check for leaks. For the detection of benzene leaks in petrochemical plant styrene units, BW PID with a UV lamp energy of 9.8 eV can be used. The BP Texas Refinery, located in Texas, USA, uses a BW PID with a 9.8 eV ultraviolet lamp to monitor and alert for benzene leaks in the production workshop. During more than half a year of continuous monitoring, BW PID accurately and effectively sounded an alarm for a benzene leakage accident that occurred during this period.
Metallurgical industry
The metallurgical industry, especially steel smelting, uses industrial gas as fuel. Due to the high content of CO in blast furnace gas, converter gas, and coke oven gas, CO poisoning or explosion accidents may occur due to the lack of leak detection for CO and combustible gases. The protection testing of steel enterprises mainly adopts BW CO for monitoring CO toxicity and BW LEL for monitoring the total concentration of combustible gases. Monitoring the concentration of toxic and flammable gases can track changes in gas concentration in the environment. If the gas reaches a certain concentration, the instrument can issue an alarm signal to warn nearby personnel of gas leakage. Immediate evacuation and emergency measures should be taken to avoid further development of the situation and accidents such as poisoning or explosion.
