Phase III Expansion Project of the Macao Waste-to-Energy Center

Hydrophobic expansion vessel

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Expansion container

Query

Keywords:

Expansion container

Phase III Expansion Project of the Macao Waste-to-Energy Center

Case Introduction

Regular blowdown expansion tank

The periodic blowdown expansion tank reduces the pressure and expands the volume of boiler blowdown water, thereby separating secondary steam from waste hot water. The secondary steam is discharged to the atmosphere or utilized as a heat source, while the waste hot water is typically routed to an effluent cooling pond and then discharged into the groundwater system.

Continuous Blowdown Expansion Tank

The continuous blowdown expansion tank is connected to the boiler’s continuous blowdown outlet and serves to reduce the pressure and expand the volume of the boiler’s continuous blowdown before discharge. The secondary steam is routed through a dedicated pipeline, typically to the deaerator, while the waste hot water is automatically discharged via a float‑type level control valve or an overflow‑adjustment valve, usually into a fixed‑drain expansion tank, allowing the thermal energy to be recovered and reused. The continuous blowdown flow rate is automatically adjusted in response to changes in the boiler feedwater load, maintaining a relatively stable blowdown rate. By utilizing the secondary steam and waste hot water as heat sources, a portion of the heat lost in the boiler’s continuous blowdown can be recovered, thereby improving boiler efficiency.

Structure and Its Function

The expansion vessel consists of a main body, auxiliary components, and other parts. The main body comprises a cylindrical shell, elliptical end caps, a manhole, and internal fittings; the internal fittings include wear‑resistant devices, cooling water inlet assemblies, and overflow devices.

Country of the project	Customer Name	Project Name		Specification and Model	Quantity
Continuous blowdown expansion tank & Periodic blowdown expansion tank
Australia	Ameco Foster Wheeler	Port Pirie Waste Heat Boiler Project, Australia	Regular blowdown expansion tank	DP-5	1
Morocco	Shandong Electric Power Construction No. 3 Engineering Co., Ltd.	Morocco Noor III 150 MW Concentrated Solar Power Plant Project	Expansion container	SK-20/SX-3/SK-22 LP-7/DP-24	5
Philippines	Ameco Foster Wheeler	Philippine SEC 210-1 × 105 MW coal-fired power plant	Continuous Blowdown Expansion Tank Regular blowdown expansion tank	LP-1.2 DP-1.5	4
Malaysia	Shanghai Boiler Works Co., Ltd.	Malaysia Liwen 1 × 260 t/h Biomass–Coal CFB Boiler and Auxiliary Systems Project	Continuous Blowdown Expansion Tank Regular blowdown expansion tank	LP-5.5 DP-7.5	2
Russia	China Fifth Ring Engineering Co., Ltd.	Russia’s Syzran Fertilizer Project	Expansion container	LP-1/DP-4.5/SK-3.5	3
Singapore	Jiangsu Haitong Economic and Trade Co., Ltd.	Singapore Tuas 300 TPD Waste-to-Energy Project	Expansion container Gas storage tank	LP-1.5/DP-3.5/SK-1.5 CQ-0.1	9
Maldives	Jiangsu Haitong Economic and Trade Co., Ltd. (China Tianying Co., Ltd., CNTY)	Maldives Energy and Waste Management Waste-to-Energy Project	Expansion container	LP-1.5/DP-3.5 SK-1.5	3
Saudi Arabia	Oriental Lingri Boiler Co., Ltd.	Saudi Al-Jafra Project	Continuous Blowdown Expansion Tank Regular blowdown expansion tank	LP-3 DP-12	2
Indonesia	Shanghai HaiGuo Technology Co., Ltd.	Indonesia Oman 900 KTPA AMIN Self-Provided Copper Smelting Plant Project	Regular blowdown expansion tank	DP-6 DN600 DP-3.5 DN600	4
Gambia	Tianjin Gela Gas Compression Equipment Co., Ltd.	Gambia GGC Biomass Power Plant Project	Regular blowdown expansion tank Hydrophobic expansion vessel	DP-7.5 V=10m³ SK-0.5 V=10m³	5
Thailand	Chongqing Sanfeng Cavantha Environmental Industry Co., Ltd.	Thailand Chokchai 9.9MW WTE Project	Deaerator Expansion container	DMC-75 DP-3.5/LP-1.5/SK-3	4
South Korea	Sumitomo Heavy Industries Fuhui Energy Management (Shanghai) Co., Ltd.	Korean TW Project	Atmospheric Flash Drum Continuous Blowdown Expansion Tank	DN1500, 4 m³ DN1200, 2 m³	2
Malaysia	Oriental Lingri Boiler Co., Ltd.	Malaysia Miri Gas-fired Power Plant Project	Continuous Blowdown Expansion Tank Regular blowdown expansion tank	LP-3 DP-10	2
Iraq	Oriental Lingri Boiler Co., Ltd.	Iraq Zubair Gas Turbine Unit Single-to-Combined Project	Continuous Blowdown Expansion Tank Regular blowdown expansion tank	LP-3 DP-10	2
Brazil	Valmet Technology Co., Ltd.	Brazil	Regular blowdown expansion tank Continuous Blowdown Expansion Tank	ID1300x10 L=2000 ID1200x10 L=1500	2
Saudi Arabia	Oriental Lingri Boiler Co., Ltd.	Saudi Gazlan Combined-Cycle Gas Power Plant Expansion Project	Regular blowdown expansion tank Continuous Blowdown Expansion Tank	DP-15 LP-3.0	16
Hydrophobic expansion vessel
Oman	Shandong Electric Power Construction No. 3 Engineering Co., Ltd.	Oman Salalah Phase II 430 MW Gas-Fired Combined-Cycle Power Plant Project	Hydrophobic expansion vessel	SK-47/SK-22/SK-1	8
Jordan	Shandong Electric Power Construction No. 3 Engineering Co., Ltd.	Jordan Samareh Phase IV 66.4 MW Combined-Cycle Expansion Project	Hydrophobic expansion vessel	SK-11.7	1
Japan	Andritz Austria	Japan Ichihara Project	Hydrophobic expansion vessel	SK-0.4 SK-4.8	2
United Arab Emirates	Shandong Electric Power Construction No. 3 Engineering Co., Ltd.	UAE DUBAL 550 MW Combined-Cycle Power Plant	Hydrophobic expansion vessel	SK-20	1
Bahrain	Shandong Electric Power Construction No. 3 Engineering Co., Ltd.	Bahrain Adu Phase II Independent Water Plant and Power Station Project	Hydrophobic expansion vessel	SK-13.5 SK-3.4	4
Bangladesh	China Energy Construction Group Northeast Electric Power First Engineering Company	Meghnaghat PhaseⅡFuel Gas589.75MW/Fuel Oil 541.22MW Combined Cycle Power Station Project, Bangladesh	Hydrophobic expansion vessel	SK-10	1
Indonesia	Sumitomo Heavy Industries Fuhui Energy Management (Shanghai) Co., Ltd.	Indonesia Mania Smelter Project	Hydrophobic expansion vessel	SK-3 SK-5	2
Uzbekistan	China Energy Engineering Group Zhejiang Thermal Power Construction Co., Ltd.	Independent 1,500 MW gas-fired combined-cycle power plant on the Syr Darya River in Uzbekistan	Hydrophobic expansion vessel	SK-2.2	1
Saudi Arabia	Shandong Electric Power Construction No. 3 Engineering Co., Ltd.	Saudi Taiba 1,800 MW Combined-Cycle Power Plant Project	Expansion container	SK-36.7/SK-16.2/SX-18 YX-8/SX-1/SX-16/YX-5/YX-10	21
Singapore	Shandong Electric Power Construction No. 3 Engineering Co., Ltd.	Singapore CCP50 600 MW Combined-Cycle Power Plant Project	Expansion container	SK-29.4/SX-8.45 SX-0.25/YX-14	4