{17)
g a be r il i b, u y e r d a n 4 0% li H N O , b o ' l i b , x o m a r a l a s h m a
ar al as ht i rg ic h i
{24)
ga y u bor i ladi .
N i t r o z a gazlari gazli s ovi tgic h ( 7 ) d a n c h i q i b , yi g‘g i ch ( 2 7 ) d a n
ke l ay ot ga n n i t r oz a gazlari va avt okl av ( 2 5 ) d a n c h i q a y o t g a n p uf l a-
n u v c h i g a z l a r bilan q o ‘shilib, v e n t i l a t o r
{8)
o rq al i ikkita k e t m a - k e t
u l a n g a n b o s im i 0, 1842 M P a d a i s hl ovc hi o ks i d l o vc h i m i n o r a l a r ( 9 )
ga beriladi. Bu m i n or a l a r d a ni tr oza gazlaridagi a z ot m on oo ks i d i kislo
r o d b il an q uy ida gi e k z o t e r m i k reaksi ya b o ‘y i c h a a z o t d i o ks i d i ga c ha
ok si dl an a d i :
2 N O + 0 2< = ± 2 N 0 2 + 124 kJ
(9.6)
O k s i d l ov ch i m i n o r a l a r ( 9 ) d a suv b u g ‘l a r i d a n b i r qismi k o n d e n
s at lani b, hosil b o ‘l gan s u y u q suv esa a z o t di oksi di b i lan yutilib:
3 N 0 2 + H 20 < = * 2 H N 0 3 + N O + 136 kJ
(9.7)
b i ri nc hi o k si dl ov ch i m i n o r a ( 9 ) d a 5 0 —55% H N 0 3, i k k i n c h i o k
si dlovchi m i n o r a ( 9 ) d a esa 6 0 — 62% H N 0 3 e r i t m a s i n i hosil qiladi.
Bu ikkala (9.6) va (9.7) e k z o t e r m i k reaksiyal ar nat ij asi da hosil b o ‘la-
y o t g a n i ssiqliklar m o s k o n s e n t r a t s i y a l a r d a g i a z o t k i s l o ta l a r b il an
n as os l ar
{11)
orqali suvli sovitgich (
10)
ga u za ti li b, u n g a b e r i l a y o t
g a n suv or qa l i c h i q a z i b t a s h l a n a d i l a r . Bi ri nchi o k s i d l ov c h i m i n o r a
( 9 ) d a n 5 0 —55% li azot kislota e r it ma s i i kkinchi o ks idl ovchi m i n o r a
( 9 ) ga berilib, u y e r d a n o ‘r t a c h a 6 0 % li az ot kislotasi x o m a r a l a s h
m a ar al as h t i rg i c h i
{24)
ga y ubor i ladi . H i s o b l a r g a q a r a g a n d a k un i g a
1 t az ot kislotasi ishlab c h i q a r i s h d a a z o t m o n o o k s i d i n i 9 3 % g a c h a
oksi dl ash u c h u n m i n o r a n i n g 11,5 m 3 h a j m t o ‘liq y e t a r ekan.
N i t r o z a gaz la ri dagi o k s i d l a n m a y q ol ga n a z o t m o n o o k s i d i t o ‘liq
oksi dl ash m i n o r a s i (
12)
d a 9 8 % li az ot kislotasi b il an o k si dl an a d i ;
bu j a r a y o n nat ij asi da 98% li H N 0 3 k on s en t ra t s i y a s i p a s aya di ; shu
bil an birga t a ’kidlash ker akki , t o ‘liq ok s id l as h m i n o r a s i (
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