Exhaust gas cooler
AssigneeMitsubishi Heavy Industries Engineering, Ltd.
InventorsKaori Yoshida, Moritoshi Murakami, Ayumu Yamazaki, Rikio Kan, Kiyotaka Kunimune, Koji Nakayama
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Abstract
An exhaust gas cooler includes: a steam drum containing first water; an economizer for heat exchange between exhaust gas and the first water supplied from the steam drum; and a feedwater pipe for supplying the first water with second water having a lower temperature than the first water. The exhaust gas cooler is configured such that the first water flowing out of the economizer is introduced into the steam drum. The second water is divided and supplied to the first water flowing out of the economizer and the first water flowing into the economizer.
Claims3
An exhaust gas cooler comprising:
- a steam drum containing first water;
- an exhaust heat boiler for heating the first water in the steam drum to produce steam by heat exchange between the first water and exhaust gas;
- an economizer for heat exchange between the exhaust gas, after the heat exchange between the first water and the exhaust gas, and the heated first water supplied from the steam drum;
- a feedwater pipe for supplying the first water with second water having a lower temperature than the first water;
- a temperature detection member that detects an inlet temperature, which is a temperature of the first water flowing into the economizer;
- and
- an inlet-supply-amount control member that controls an inlet supply amount, which is a supply amount of the second water supplied to the first water flowing into the economizer,
- wherein the exhaust gas cooler is configured such that the first water flowing out of the economizer is introduced into the steam drum,
- wherein the second water is divided and supplied to the first water flowing out of the economizer and the first water flowing into the economizer, and
- wherein the inlet-supply-amount control member controls the inlet supply amount such that the inlet temperature is in a predetermined setting temperature range.
Dependencies are inferred from the claim text.