High Efficient Curved Bare Superheater Tube for Industry and Power Station
Product Information
Supheater is a part of boiler that further heats steam from saturation temperature to superheated temperature. It is also called steam superheater. Superheater can be divided into convection type, radiation type and semi-radiation type according to heat transfer mode, and snake-shaped tube type, screen type, wall type and enclosure type according to structural characteristics. They are composed of several parallel pipes and headers for import and export.
Most industrial boilers are not equipped with superheaters, because many industrial production processes and living facilities only need saturated steam. In power plants, locomotives and marine boilers, superheaters are usually installed to improve the circulating heat efficiency of the whole steam power plant.
Advantages
1. superheater is the saturated steam heating into a certain temperature of superheat steam equipment.
2. After the saturated steam is heated into superheated steam, the working capacity of steam in the steam turbine is improved, that is, the useful enthalpy of steam in the steam turbine is increased, thus improving the cycle efficiency of the heat engine.
3. In addition, the adoption of hot steam can also reduce the exhaust humidity of the steam turbine and avoid the corrosion of the turbine blade, which creates favorable conditions for the further reduction of exhaust pressure and safe operation of the steam turbine.
Type & Characteristics
The diameter of the tube is generally 30-60 mm. Convective superheater is the most commonly used, using snake-shaped tube. It has a relatively dense pipe group, which is arranged in flue gas temperature 450 - 1000 C, and is scoured horizontally and vertically by flue gas. The flue gas mainly convects heat to the pipe, and some radiation absorbs heat. The screen superheater is composed of multiple tube panels, which are arranged at the upper part of the furnace or at the outlet. It belongs to the radiation or semi-radiation superheater. The former absorbs the radiation heat of the furnace flame, while the latter absorbs part of the convective heat. In power plant boilers above 10 MPa, both screen and serpentine tube superheaters are usually used to increase heat absorption. The wall superheater applied on the inner wall of the furnace is radiation superheater, which is seldom used. The wall-enclosed superheater is used to form the top of the furnace and the wall of the convective flue duct in a large-capacity power plant boiler. The light furnace wall is made of insulating material. The picture shows the arrangement of several superheaters. Small capacity industrial boilers equipped with superheaters usually use convective superheaters of single-stage tubes to meet the requirements.
Parameters
| Material | carbon steel, alloy steel , or durable heat steel |
| Tube OD | 10-114mm |
| Tube W.T. | 0.8mm- 15mm |
Designing Structure
1. heating saturated steam, temperature up to 900 degree C.
2. high efficiency, >90%.
3. high speed heating.
4. design with stainless steel.
5. long design service life, 15 years.
Company Introduction
Our main products cover Utility Boiler, HRSG Boiler, coal-fired , oil(gas) -fired, coal-water-slurry-fired and garbage-fired steam/hot water boilers, organic heat carrier boilers, etc., and Boiler spare parts (Economizer, Finned tube, Header, Steam drum, Superheater, Water wall panel, Air preheater, Cyclone separator, etc., which are widely used in power generation, heat supply, chemical engineering, textile, food, paper, road building, plastic, rubber and wood working industries.
1100 employees, 400,000 ㎡ with fixed assets amounting to USD 110,000,000, 34 years experience, ISO9001, SO3834, EN12952 certificated, 150km expressway to Shanghai,60km state road to Suzhou or Wuxi, this is how we keep superior quality and competitive offers for global valued customers.
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