The catalytic incineration system for tail gases from the tank farm, vehicle loading/unloading operations, and non-condensable gases from the facility has been successfully put into operation
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The exhaust gases from the tank area, as well as those generated during loading and unloading processes, as well as the non-condensable gases from the facility in a factory in Jiangsu contain pollutants such as butyraldehyde, butanol, acrylic acid, propylene, propane, hydrogen, and carbon monoxide. Various methods such as condensation and activated carbon adsorption were tried, but none of them were able to meet the standards for atmospheric pollutant emissions. After thorough comparison and evaluation, the absorption + catalytic incineration process was ultimately chosen. First, high-boiling-point solvents from the main processing unit are used to absorb most of the organic compounds in the exhaust gases, thereby turning waste into a useful resource. The absorbed organic compounds are then sent to a catalytic incineration system for final treatment, ensuring that the emissions meet the required standards. Tests showed that the total non-methane hydrocarbons in the exhaust gases were approximately 1 mg/m3, which is far below the specified emission standards; as a result, it was regarded as a model for environmental protection. It was subsequently inspected by the Jiangsu Province Environmental Protection Inspection Team and the Central Environmental Protection Inspection Team, which enabled the main facility to gain broad opportunities for development.
Thank you to the original poster for sharing; I have a few questions: 1) Is diesel used as the absorbent? I see that there are quite a few organic components in your VOCs. Is the heavy oil after absorption sent back to the storage tank or reused in refining? What are the purification criteria for the absorption outlet? 2) What was the load on the electric heater when the CO unit was in operation? Is the autocatalytic temperature rise effect significant?
Hello, it is a product that makes use of a main absorption unit; after absorption, the recovered material is processed by a recovery device. The concentration of the gas after absorption can be adjusted in the absorption tower to meet the temperature requirements of the subsequent catalytic combustion system. As a result, the exhaust gases emitted by the catalytic system contain approximately 1 pp of non-methane hydrocarbons.
In chemical plant exhaust gases from tank areas, loading/unloading stations, vacuum packaging units, etc., oxygen is often present; in the presence of an open flame, there is a risk of combustion and explosion. The catalytic oxidation process does not involve open flames, making it safer. There are dozens of applications in the field of exhaust gas treatment for facilities producing acrylonitrile, acrylic acid, phenol propyl ether, butyl octanol, propylene oxide, hydrogen peroxide, and other products derived from propylene.