STEAM TEMPERATURE CONTROL DEVICE AND CONTROL UNIT INCLUDING SAME

WIPO Patent Application WO/2018/100821

A1

A steam temperature control device (3) controls a main steam temperature which is the temperature of the main steam generated from a superheater (14) of a boiler that includes: a temperature reducer (13) for reducing the temperature of steam by using spray water of a water amount based on a water amount control value; and the superheater (14) that heats steam exhausted from the temperature reducer (13) using exhaust gas. The steam temperature control device (3) is equipped with a water amount control value calculating unit (311) that calculates the water amount control value on the basis of the main steam temperature such that the main steam temperature becomes equal to a target temperature, and transmits the water amount control value to a spray water filling valve (24). The water amount control value calculating unit (311) transmits to the spray water filling valve (24), as a lower limit of the water amount control value, a water amount control minimum value calculated on the basis of the amount of water supplied to the temperature reducer (13) or a running average of the water amount control value in a fixed period.

SHIMONASHI TAKASHI (JP)
ARIMURA KO (JP)

PCT/JP2017/031691

June 07, 2018

September 04, 2017

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KOBELCO ECO SOLUTIONS CO LTD (JP)

F22G5/12

JPH10148305A	1998-06-02
JPS59119104A	1984-07-10
JPH06257711A	1994-09-16
JP2008241220A	2008-10-09
JPS6410004A	1989-01-13
JPS61107007A	1986-05-24
JPH10122507A	1998-05-15
JPH11182808A	1999-07-06
JP2000249305A	2000-09-12
JPS60243402A	1985-12-03
US20080302102A1	2008-12-11
JP2016145652A	2016-08-12
JP2016057026A	2016-04-21
JP2016145652A	2016-08-12

See also references of EP 3550208A4

KOTANI, Etsuji et al. (JP)

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