The invention discloses an integrated TEG (
triethylene glycol)
dehydration integrated process device and method. The device comprises a feed gas
filtration separator, a TEG (
triethylene glycol) absorption
tower and a
dry gas / barren solution
heat exchanger; a
liquid phase outlet at the bottom of the TEG (
triethylene glycol) absorption
tower is connected to a TEG (triethylene glycol)
circulating pump; a pregnant solution outlet of the TEG (triethylene glycol)
circulating pump is sequentially connected to a pregnant solution heat exchange coil, a flash tank, a TEG (triethylene glycol) solution filter and a barren / pregnant solution
heat exchanger, a barren solution
buffer tank and a pregnant solution rectifying column; a flashing steam outlet of the flash tank is connected to a TEG (triethylene glycol) fire tube type
reboiler; the pregnant solution rectifying column, the fire tube type
reboiler, a barren solution rectifying column and the barren solution
buffer tank are connected together;and an outlet of the barren solution
buffer tank, the barren / pregnant solution
heat exchanger, the TEG (triethylene glycol)
circulating pump, a
dry gas / barren solution heat exchanger shell pass and aliquid phase inlet at the
tower top of the TEG (triethylene glycol) absorption tower are sequentially connected. According to the integrated TEG (triethylene glycol)
dehydration integrated process device and method, the process is simpler, highly
integrated design is better facilitated, moving is easy, in addition,
energy conservation and emission reduction are realized to a great extent, the operation cost is lowered, and the one-time investment is reduced.