Shanshrivastava i am pretty sure that you aren't clear with the explanation so i simply it:- Habour process is used for manfufacture of ammonia(NH 3). To maek ammonia Nitrogen and hydrogen in ration 1:3 by volume are taken. For obtaining nitogen. liquification of air is done,whereas for hydrogen is taken from bosh process. after collecting and purifying above gas they are lead to compressor pump where at a atm on 200-250 is maintained then it is lead to "electric ppt for catalyst oxidation"