Patent ID: 11926536
Assignee: NOMURA MICRO SCIENCE CO., LTD.
Field: Environmental technology (Chemistry)
Classification: CPC C  F | IPC C  F

Claim 8:
9. A hot ultrapure water production system, comprising:
an ultrapure water production device configured to produce ultrapure water;
a water temperature regulator configured to regulate a temperature of the ultrapure water produced by the ultrapure water production device and increase the temperature of the ultrapure water to a supply water temperature for supply to a point of use, to obtain hot ultrapure water; and
a hot ultrapure water pipe through which the hot ultrapure water flows, the hot ultrapure water pipe being disposed inside the water temperature regulator and between the water temperature regulator and the point of use, wherein:
the ultrapure water production device comprises:
an ion exchange device configured to remove foreign matter from water to be treated by ion exchange;
a first ultrafiltration membrane located downstream of the ion exchange device in a flow direction of the water to be treated, the water temperature regulator includes:
a heat exchanger configured to exchange heat between the ultrapure water and a heat medium; and
a second ultrafiltration membrane located downstream of the heat exchanger in a flow direction of the ultrapure water, and
the hot ultrapure water pipe comprising:
an ultrapure water pipe through which the ultrapure water directly flows from the ultrapure water production device to the point of use; and
a branched pipe branching off from the ultrapure water pipe and causing the ultrapure water to flow to the water temperature regulator.