Question

calculeaza masa de poliacrilonitril daca se pleaca de la 4 kg CH4 de puritate 96% iar randamentul global al celor 3 reactii este de 40 %. R:2544 kg

Answer 1

calculez masa de metan pur
p/100= mpur/mimpur---> 96/100= mp/4---> m,pur=3,84kg
2CH4---.> C2H2+3H2
CH ≡ CH  +HCN---> CH2=CH-CN
nCH2=CH-CN------> --[-CH2-CH(CN)-]n
2kmol CH4-..............1kmol acrilonitril
2x16kg....................(3x12kgC+3kgH+14kgN)
3,84...........................m=6,36kg -masa teoretica
calculez masa practica, tinand cont de randament
40/100= m,teor/m,pr      40/100=  6,36/ m,pr--->
 m,pr= 2,544kg=2544g poliacrilonitril