Naphtha Hydrotreating

Naphtha feed comes from crude oil distillation or from delayed coking and visbreaking. It is cleaned and fed to the reformer.

FLOW DIAGRAM

Item	Applications	Temp range (°F)	Pressure (psi)	Size (in)
1	Feed pump isolation valve	200 – 320	1200 – 1300	8 – 12
2	Reactor isolation / catalyst addition	400 – 550	1100 – 1200	4 – 12
3	Manual reactor unloading isolation	400 – 550	1000 – 1100	4 – 12
4	Automatic reactor unloading isolation	400 – 550	1000 – 1100	4 – 12
5	Recycle gas compressor surge	120	1200 – 1300	4 – 8
6	Make-up compressor surge	120	950 – 1050	4 – 8
7	High-pressure separator automated level control isolation	250	1000	6 – 10
8	High-pressure separator letdown manual level control isolation	250	1000	6 – 10
9	Purge hydrogen emergency block valve	250	1000	1 – 8
10	H2S emergency block valve	250	1000	1 – 8
11	Rich amine isolation	250	1000	4 – 10
12	LPG emergency block valve	250	300 – 800	1 – 8
13	Low-pressure separator automated level control isolation	250	300 – 800	6 – 10
14	Low-pressure separator letdown manual level control isolation	250	300 – 800	6 – 10