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Extraction tower processing the mixture containing phenol waste water produced in petroleum processing

by:Deyuan      2020-08-20
Oil is a sticky, dark brown liquid. Parts of the upper crust has oil storage. Main ingredients are various kinds of alkanes, cyclanes and aromatic hydrocarbon mixtures. In petroleum processing will produce large amounts of waste water, waste gas, waste residue, has a great influence on the environment. Emissions, pollutant composition complex, strong toxicity, variety, emission concentration, harm is great.
the mixture containing phenol waste water produced in petroleum processing main source
in the sour water containing phenol
come mainly from processing device. Catalytic cracking, catalytic cracking, delayed coking, hydrocracking, hydrotreating process, the main pollutants are sulfide. Ammonia nitrogen, COD, phenol, cyanide, oil, etc.
alkaline wastewater containing phenol
come mainly from oil washing water, such as hydrogenation catalyst regeneration washing water, drainage, alkaline phenol unit is the main pollutant: free base. Petroleum, sulfur, phenol, etc.
organized emission source effluent contains a large number of phenol
flue gas furnace, boiler combustion exhaust gas, catalytic regeneration. Coking object completely, and sulfur recovery tail gas, oxygen, asphalt, incinerator flue gas, etc. The main pollutants are: SO2, NoX, particulate matter, the total hydrocarbon of methane, benzene, toluene, xylene, benzopyrene, phenols, etc.
alkaline containing phenol
alkaline mainly comes from oil refining, most of the alkaline has a stench of thin mucous, much as ivory, brown or black, main pollutants: COD, free alkali, phenol, sulfide, sodium sulfate. Polymer fatty acids.
the harm of wastewater containing phenol
the water pollution is one of the main environmental problems facing the current our country, the harmfulness of wastewater containing phenol is great, is increasingly important to treatment of wastewater containing phenol.
phenolic compounds is a kind of prototype poison, for all biological activity body can produce toxicity, through contact with the skin, mucous membrane without liver detoxification directly into the blood circulation, cause cell damage and loss of vitality, also can enter the body through the mouth, cause cellular damage.
high concentration phenol solution can make protein coagulation, and can continue to permeate in the body, cause deep tissue injury, necrosis and even the whole body poisoning, even a low concentration of phenol solution also can make the protein denaturation. Were phenol if long-term drinking contaminated water can cause chronic poisoning, anemia, dizziness, memory loss, and a variety of nervous system diseases, serious can cause death, phenol and other substances interact to produce synergistic effect, become more harmful, have a strong effect that cause cancer.
waste water containing phenol is not only to bring a serious threat to human health, also cause harm to animals and plants. Content of phenol in water to 2 mg/kg, the fish will appear the symptom of poisoning, more than 4 mg/kg - 15 mg/kg can cause fish death, even become extinct. If the use of phenol wastewater irrigation farmland, can make crops or die. The toxicity of wastewater containing phenol can inhibit the natural growth of other organisms in water, destroy the ecological balance.
advantage of treatment of wastewater containing phenol extraction tower:
rotary extraction tower belongs to the mechanical stirring extraction tower, it is composed with horizontal static ring baffle of the vertical cylinder. Static ring baffle as the center hole plate, static ring baffle cylinder can be divided into a series of extraction, extraction chamber center has a turntable and a series of wheel installed in parallel on the shaft, wheel and static ring of the upper and lower, respectively, are two clear room. Like other extraction tower, light and heavy phase respectively at work from the bottom and the top of the tower to rotary, contact in two-phase countercurrent extraction tower, under the action of rotary table, dispersed phase formation of small droplets, increase the mass transfer area of two phases. Finishes the extraction process of light and heavy phase respectively by top and bottom.
removing phenol extraction tower, because the tower extraction equipment has cover an area of an area small, large processing capacity, sealed performance is good wait for a characteristic, according to the separation requirements, processing capacity and system characteristics can be designed in different structure, can save a lot of the cost of extracting agent, removing phenol rate above 95%. The current domestic companies in industrial wastewater emissions about 40 billion tons, including industrial waste water containing phenol about 0. Around 5%, about 2 billion tons. According to market research and forecasts domestic around 30% of the total discharge of industrial waste water containing phenol removing phenol extraction tower can be used, it will be altogether extraction tower more than thousands.
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