Our membrane water wall are manufactured using high grade raw material and contemporary production equipment at our advanced manufacturing unit. The offered range is available in various sizes, shapes and specifications, as per the requirements of our esteemed clients. Further, these are delivered to the clients within promised time frame.

Product Description

Advantages of Membrane Water Wall
1). To guarantee the leakproofness of furnace wall and reduce the air leak of combustion chamber.
2). To achieve the full water cooling of combustion chamber, and the boiler accessories membrane water wall is benefit to prevent coking under the condition of supplemental firing.
3). The thermal storage capacity is small, the warming of combustion chamber is fast and the cooling is also fast, which could shorten the cooling time of boiler’s start and furnace shut down.
4). It is good to adopt top supported water cooled wall and it could reduce the load of boiler framework, which is benefit to overhang.
5) Compared with the bare tubes, the membrane water wall improves the heat absorption capacity of tubes.
6) The factory direct boiler membrane water wall could improve the Preliminary combination degree of boiler parts and reduce the installation workload.

Application

Boiler water walls are membrane walls that are made of tubes welded together with or without a strip of metal in between. These walls form the enclosure of the coal combustion chamber. Water wall tubes are also referred to as the evaporator section; they contain water mostly in liquid form which gradually evaporates as it rises in the boiler.

Challenges
As the water wall tubes form a lining along the whole boiler, they are submitted to a temperature gradient of 300 °C to 500 °C between the bottom section of the boiler and its top. To facilitate fitting, the panels in the boiler should preferably be made of steel grades that do not require any post-weld heat treatment. Vallourec supplies tubes for water walls in all grades, from carbon steel to advanced low-alloy steel, with outside diameters ranging from 31.8 mm to 63.5 mm.

Materials

BS 3059 Grade 440 seamless carbon steel tubes.

Welding Processes / Procedures
STT II – Surface Tension Transfer (STT) Process with certified & tested weld procedures.
TIG welding process.

Fabrication Standards / National Codes
AS1228 – Power Boilers
AS4458 – Pressure Equipment Manufacture
AS4041 – Pressure Piping
AS4037 – Pressure Equipment – examination & testing

Quality Assurance Requirements
Material certification for all materials

Inspection and Test Plan (ITP)
100% radiography on butt weld joints

Detailed Images

1.The function of the superheater in the thermal power plant is to remove the last traces of moisture ( 1 to 2%) from the saturated steam coming out of boiler and to increase its temperature sufficiently above saturation temperature.
2.The super-heating heating raises overall overall cycle efficiency efficiency as well as avoids too much condensation in the last stages of the turbine which avoids the blade erosion.
3.The heat of combustion gases from furnace is utilized for the removal of moisture from steam and to superheat the steam.
4.Super-heaters usually have several tube circuits in parallel with one or more return bends, connected between headers.

The panels are joined in two ways:
By means of welding 4mm – 8mm thick flat bar to the the tube surfaces;
Welding Extruded longitudinally finned tubes.

Contact Information
ADD: 11 East Renmin Road, Zhangjiagang City, Jiangsu, China
Phone:+86 0512-56770166
E-mail: orl@orlpower.com
Website: www.boiler-units.com

Suzhou ORL Power Engineering Co., Ltd.is located in Suzhou, Jiangsu Province.

ORL Power is a leading company and exporter of industrial boilers,power plant boilersand boiler parts (including steam drum, membrane waterwall panel,header,economizer, evaporator, superheater,H-fin economizer, spiral fin tube, air preheater, heat pipe, flue etc.), seamless steel tubes/pipes and ERW steel pipes.ORL provides our customer with full range of services including boiler design, fabrication, installation and commissioning, boiler maintenance, and supervision at site. Our product and service include design and manufacture industrial boilers, pressure vessels and tanks, and pressure parts for power plant boilers (600MW, or 1000MW).

Product Description

Boiler Parts

Boiler Drum，Boiler Waterwall Panel，Boiler Economizer，Boiler Header，Boiler Cyclone Separator，Boiler Chimney Flue Pipe，Boiler Air Preheater，Boiler Air Preheater

Boiler Parts

Boiler Super Heater，Boiler High Temp Superheater，Boiler Cyclone Separator，Boiler Flue，Boiler Heat Pipe Air Preheater，Boiler Gen Bank，Boiler Heat Pipe Elements，Boiler Tube Pin，Boiler Tubeshield，Boiler Ditch Tube

Packaging & Shipping

We have our boiler manufacturing plant, and obtain ISO9001:2008, ISO3834, ASME S, U and GB stamp.

Company Business

Our products have been wildly used in power plants and large international companies overseas.

Such as USA, Brazil, Porto Rico, Guatemala, Spain, Demark, Norway, Turkey, India, Korea, Australia, Middle East, Southeast Asia etc.

FAQ

1. Why choose us?

We are boiler and boiler parts(boiler drum, boiler waterwall panel, boiler economizer, boiler header, boiler cyclone separator, boiler flue pipe, boiler air preheater, boiler pipe, boiler tube)manufacture and we are one of the best suppliers in China.

We ensure the deliver time, high quality, and the best after-sale service for you.

2. How to order?
Welcome come to our factory for inspecting and discussion the technical details.

Contact Information

ADD: Zhangjiagang City, Jiangsu, China

Phone:+86 0512-56770166

E-mail: orl@orlpower.com 

Website: www.boiler-units.com