Question

(a) List the technologies for VOC removal and explain each process. (b) A thermal oxidizer incinerator operates as a plug flow reactor at a temperature of 250°C and has a gas residence time of 0.3 seconds. If the pollutant (vinyl chloride) enters the incinerator at a flow rate of 3,000 m/min and it is desired to remove 99.99% of the pollutant, what should the length of the incinerator be? (c) What is the length of the incinerator if the desired removal is increased to 99.99995? The first order rate constant for vinyl chloride removal is 45/sec at 250°C and the inside diameter of the incinerator (which is shaped like a cylinder) is 1 m. [15 pts]

Answer 1

Soley 181 order Reaction thermal oxidizer Incinerator -ky/a Co Co= outlet Concentration of pollutant meet Concentration of pollutant k= declay constant flow rate volume of reactor required. Case I G = 100 % Co= 100 - 99.99 = 0.01 3000 m/min K= 45 sec 45X V 300/60 Too v= V= 10.233 m I D xH 수 10.233 = #x12xH 4 length of Incinerator & H = 13.03m Case II G= 100% Co = 100 - 99.99995000005 0.0oo05 45xV loo E 3000/60 v= 16.12 m² 7 x 1² x H length of Incinerator H = 20.525m