除氧器英文说明书

DESIGN & OPERATION MANAL YYW-1080 DEAERATOR

NO.(F0312610010981)

REPARED BY:

CHECKED BY:

REVIEWED BY:

HARBIN BOILER COMPANY LIMITED

THE PEOPLE’S REPUBLIC OF CHINA

2009-6

Contents

1Purpose & Model (3)

2Working Principles of Deaerator (3)

3Specification (4)

4Configuration & Functions (4)

5Accessories (6)

6Installation, Startup, Operation, Inspection & Maintenance (8)

1 Purpose & Model

The YYW-1080 deaerator is a horizontally arranged deaeration equipment for slide pressure operation, used as mixed heating equipment for the PUTTALLAM 1×300MW Powerplant, Vietnam.

It utilizes the extracted steam from the turbine and the auxiliary steam to heat the condensate up to the saturation temperature correspondent to the deaerator operating pressure and to remove the oxygen and other gases dissolved in the feedwater for avoidance or reduction of the oxide corrosion to the boiler, turbine and their auxiliaries.

Type

The model of the deaerator consists of the name of deaerator in the Chinese pinyin and the major parameter (capacity per unit time: t/h).

YYW-1080 deaerator

Stands for the rated capacity 1080t/h

Stands for the abbreviation of the deaerator in Chinese pinyin.

(yang• ya• wo)

Description

The working pressure of the equipment is 0.147~1.032Mpa（a） .

Operation mode: slide (slide pressure)

Slide pressure range: 0.147~1.032Mpa（a）

2 Working Principles of Deaerator

16 spring nozzles of 50t/h capacity are evenly located on the top of the horizontal

deaerator, the nozzles are inserted into the deaerator. At the other end, the flange is connected to the water intake device.

The condensate flows through the water intake device to the spring nozzles, where the condensate pressure is higher than the deaerator steam side pressure, the pressure difference between the water side and the steam side applies on the check ring of the spring nozzle orifice and presses the nozzle spring down to open the nozzle, consequently the condensate is sprayed out and into the spray deaerator space in the form of the conic atomized water film, where the heating steam fully contacts with the conic water film and promptly heats the condensate to or close to the saturation temperature under the deaerator working pressure, most oxygen and non-condensated gases are removed in the pulverized deaerator section. The heated condensate for deaerator uniformly falls on the tray below forming a layer of water packing, which is redistributed through the tray orifices and showered down into tray stacks. The tray stacks consist of 350,000-odd stainless packing rings, which add substantially the steam-water contact area, repeatedly disintegrate and mix the