A boiler is called a high pressure boiler when it operates with a steam pressure above 80 bar. The high-pressure boilers are widely used for power generation in thermal power plants.
In high-pressure boiler if the feed-water pressure increases, the saturation temperature of water rises and the latent heat of vaporization decreases. The feed water can be heated to saturation of temperature in the economizer with the help of waste heat.Recovery from the exhaust gases escaping to chimney. Then the boiler supplies only latent heat of vaporization and super heat. Thus, a boiler operation at high pressure will require less heat addition for steam generation.
1.Forced circulation of water – in all modern high-pressure boilers, the force circulation of water is maintained with the help of pumps. It increases the help of pumps. It increases the mean temperature of heat addition and evaporation capacity if the boiler.
2.Large number of small diameter tubes – the surface-area-to-volume-ratio (area density) increases with the use of small-diameter tubes. It helps in high rate of the heat transfer to water flowing inside the tubes. Therefore, a large number of small density tubes in a zigzag manner are used for water circulation in forced circulation. Further, use of a short tube reduces the pressure loss and gives better control the quality of steam.
3.Higher steam pressure and temperature – the steam is generated at a pressure between 80 bar to 300 bar and temperature of 450°C to 585°C with two super heaters in series. The use of such stream is very suitable for power generation. It increases thermal efficiency of the plant and reduces the moisture contents in low pressure stages of expansion in the turbine.
4.Improved mode of heat transfer – modern high-pressure boilers use the heat transfer by radiation along with conduction and convection. The total heat-receiving equipment is divided into several parts. So they can easily be located in various zones of the furnace for most efficient heat transfer to the water circuit.
5.Once through construction – in high-pressure boiler operating at and above the critical pressure, the water directly flashes into steam in the tube itself. It eliminates the need of a boiler drum.
1.High-pressure boilers use the forced circulation of water which ensures the positive circulation of water and increased evaporative capacity.
2.They require less heat of vaporization.
3.They are compact and thus require less floor space.
4.Due to high velocity of water, the tendency of scale formation is minimized.
5.All parts are uniformly heated and the danger of overheating is minimized.
Source: http://www.zgsteamboiler.com/news/High-Pressure-Boilers-Features-and-A.html
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Packaging Detail:Wooden box package of High Pressure Boilers Features and Advantages
Delivery Detail:20-40 days after payment
We have over 70 years' experience of industrial steam boiler and autoclave, and we have a professional installation and after-sales staff for products.Take advantage of the most economical way to improve efficiency and operating flexibility, Get substantial savings on your fuel costs,Reduce all emissions for each K/W of electricity generated, including CO2.
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Established:In 1945
Number of Employees:above 1500 People
Our products:industrial horizontal steam boiler and hot water boiler(biomass boiler, gas boiler, oil boiler, coal boiler, etc), CFB boiler, power plant boiler, waste heating recovery boiler, Pressure Vessel(AAC autoclave, Curing tank,etc )
Factory Size (Sq.meters):400,000 square meters
Factory Location:Factory 1: Zhengzhou,,Henan, China. Factory 2: Xingyang,Henan,China
Number of R&D Staff:376 people
Export Percentage:30-40%
Total Annual Sales Volume:US$100 Million
Main Market:South America(Colombia, Venezuela, Guyana, Suriname, Ecuador, Peru, Brazil, Bolivia, Chile, Paraguay, Uruguay, Argentina and French Guiana), North America(Bahamas, Canada, Costa Rica, Cuba, El Salvador, Guatemala, Honduras, Haiti, Jamaica, Mexico, Nicaragua, Panama), Eastern Asia(Mongolia / Russia / North Korea / South Korea / Japan), Oceania(Australia, New Zealand, Fiji), Mid East(Bahrain, Egypt, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Oman, Qatar, Saudi Arabia, Syria, UAE and Yemen, Palestine, Algeria, Libya, Morocco, Tunisia and Sudan, Mauritania and Somalia), Africa(Egypt, Sudan, Libya, Tunisia, Algeria, Morocco, Ethiopia, Somalia, Kenya, Tanzania, Sierra Leone, Liberia, Cote d'Ivoire, Ghana, Togo, Niger, Nigeria, Cameroon, Gabon, Congo (Brazzaville), Zambia, Zimbabwe, Angola, Mozambique, Botswana, Namibia, South Africa), South Asia(Nepal, Bhutan, India, Pakistan, Bangladesh, Sri Lanka, Maldives) Southeast Asia(Vietnam, Laos, Cambodia, Thailand, Myanmar, Malaysia, Singapore, Indonesia, Brunei, the Philippines, East Timor) Domestic Market(China)
Source: http://www.zgsteamboiler.com/news/High-Pressure-Boilers-Features-and-A.html
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