How to recycle carbon black tail gas

How to recycle carbon black tail gas

the carbon black tail gas dehumidification and dust removal process is composed of washing cooling tower, cyclone mist collector, tail gas fan, water pump, pool, air cooling tower motor, resistance and tail gas oxygen content monitoring instrument, steel structure, etc. The hot carbon black tail gas from the carbon black production process first enters the washing and cooling tower (there are two layers of ceramic ring packing in the tower). After being washed and cooled by the circulating cooling water sprayed from the tower top, the tail gas temperature decreases from 180 ~ 200 ℃ to below 45 ℃ (the humidity decreases from about 110g/m3 to below 60g/m3, and the calorific value increases from 3265kj/m3 to 5440kj/m3); After washing, cooling, dehumidification, dedusting and desulfurization, the tail gas enters the cyclone to remove trace moisture and dust particles. The purified and dehumidified tail gas is sent to the company for distribution into coke oven gas for industrial and residential use. The circulating cooling water used is pressurized by the circulating water tank through the cooling water pump and sent to the top of the washing cooling tower for spraying, and then into the water tank at the bottom of the cooling tower. The other water in the water tank is pressurized by the circulating water pump and enters the air cooling tower for cooling, and then enters the water tank for recycling

carbon black produces tail gas with a temperature of 180 ~ 200 ℃ in the production process. 2. Metal stretching, tightening, tortuosity and change experiment: dew point temperature 130 ~ 150 ℃. Because carbon black tail gas contains SO2 gas, the higher the SO2 gas content, the greater the saturation humidity. Generally, the humidity of carbon black tail gas is 100 ~ 115g/m3. Under a certain temperature, pressure and containing a certain amount of SO2 gas, a certain amount of carbon black tail gas contains a certain amount of water vapor. What is the material of the auxiliary equipment of the steam tester?. In order to reduce the humidity of the tail gas, we use water washing to reduce the temperature of the carbon black tail gas from 180 ~ 200 ℃ to 35 ~ 45 ℃. At this time, the carbon black tail gas enters another supersaturated state from one supersaturated state. The water vapor in the tail gas begins to separate from the carbon black tail gas in the form of dew point into liquid water, and the carbon black tail gas is dehumidified and dried

operation parameters of tail gas recovery process:

the temperature of tail gas entering the washing cooling tower is 180 ~ 200 ℃

the temperature of the tail gas out of the washing cooling tower is 35 ~ 45 ℃

circulating cooling water flow 200m3/h

the temperature of circulating water entering the washing cooling tower is ≤ 35 ℃

the resistance of the washing cooling tower can still pass the security check ≯ 1000Pa

fan power 185KW

treatment air volume: 20000m3/h

total pressure: 0.14MPa

oxygen content of tail gas ≤ 4%