Introduction:
Due to the variety and complexity of hazardous waste stored in hazardous waste incineration plants, the source industries are extensive, and the types and components of waste gas generated are complex, which has a great impact on environmental pollution and requires high control requirements.
The waste gas of the hazardous waste incineration plant is mainly the waste gas produced by the incineration plant, the pretreatment plant, the A temporary warehouse, the B temporary warehouse, the unloading station, and the waste liquid tank area.
Features
The main components of Hazardous waste gas are ammonia, hydrogen sulfide, hydrogen chloride, fluoride, non-methane total hydrocarbons and other components;
Solution
Processing technology:
Acid washing/alkali washing --- dry filtration --- light oxygen --- activated carbon adsorption (regeneration and recycling can be selected)
Alkali scrubber
When the acid (alkali) gas enters the alkali (acid) liquid, it will neutralize each other, and play the role of eliminating the acid (alkaline) gas. By controlling the pH value of the circulating liquid in the alkali spray tower, each spray The system is equipped with a set of alkali (acid) dosing device. The device is equipped with a dissolving tank, a mixer, a dosing pump, and a pH meter is installed in the circulating water tank of the spray tower. The linkage control between the pH value and the dosing pump:
1: Monitor the pH value of the circulating water tank of the spray tower, start/stop the dosing pump, and adjust the pH value of the water tank to 7-9.
Deodorization equipment decomposition and oxidation
High-energy C-band light is used to strongly crack the molecular chains of polluted gases, change the molecular structure of substances, and crack and oxidize high-molecular pollutants into low-molecular harmless substances, such as water and carbon dioxide. O3 strong catalytic oxidant can catalyze the oxidation of exhaust gas, which can effectively kill bacteria, destroy toxic and harmful substances and change them into low-molecular harmless substances. The C-band laser stimulates the activity of the catalyst coating and strengthens the catalytic oxidation. During the decomposition process, high-energy and high-ozone UV rays are generated to decompose oxygen molecules in the air to generate free oxygen, that is, active oxygen. Because the positive and negative electrons carried by free oxygen are unbalanced, they need to combine with oxygen molecules to generate ozone. UV+O2→O-+O* (active oxygen) O+O2→O3 (ozone), it is well known that ozone has a strong oxidation effect on organic matter, and has a strong removal effect on malodorous gases and other irritating odors. O3 is also a strong catalytic oxidant for catalytic oxidation of exhaust gas, cracking the molecular bonds of bacteria in malodorous gas, destroying the nucleic acid (DNA) of bacteria, and then carrying out oxidation reaction through ozone to completely achieve the purpose of deodorization and sterilization.
Activated carbon adsorption (optional analytical cycle use)
The organic waste gas enters the activated carbon adsorption device. By controlling the flow rate and residence time of the activated carbon adsorption device, the organic matter undergoes polar physical adsorption in the micropores of the activated carbon.