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Analysis of the overall structure of the boiler and the specific features introduced - Boiler, heat by wgverbv dfbdfb
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Analysis of the overall structure of the boiler and the specific features introduced - Boiler, heat by WGVERBV DFBDFB
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| Article Posted: 02/26/2011 |
| Article Views: 135 |
| Articles Written: 1361 - MORE ARTICLES FROM THIS AUTHOR |
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Analysis of the overall structure of the boiler and the specific features introduced - Boiler, heat |
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Business,Business News,Business Opportunities
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HC HVAC & R Network Boiler The overall structure of the boiler and auxiliary equipment, including two parts. Boiler furnace, drum, Burner , Water wall superheater, economizer, air preheater, furnace wall structure and major components constitute the core of the production of steam, known as the boiler. Boiler in the two most important components in the furnace and the drum.
Furnace, also known as the combustion chamber is the space for the fuel combustion. The solid fuel on the grate, for the fire-bed combustion chamber known as the layer burner, also known as fire-bed furnace; will be liquid, gas or pulverized solid fuel, sprayed into the combustion chamber as the fire room room burning furnace, also known as the fire room heaters; air to hold up its coal particle combustion was boiling and low-grade fuel suitable for combustion furnace as furnace, also known as fluidized bed furnace; use of coal particles and air flow to high-speed rotation, and a strong fire cylindrical chamber called Cyclone.
Furnace cross-section of generally square or rectangular. Formed within the combustion of fuel in the furnace flame and high temperature gas, so the furnace temperature around the furnace wall material and by the Insulation material Form. In the furnace wall surface, often laying the inner water wall tube, wall oven It will not burn out protection, but also absorb a lot of flames and smoke high temperature radiant heat.
Furnace design need to be fully consider the characteristics of the fuel. Each boiler should be fueled with the original design of fuel. The major differences with the characteristics of fuel when the boiler fuel economy and reliability may be reduced.
Drum is a natural cycle and multiple forced circulation boiler, to accept economizer to the water supply and circulation loop connected to the superheater conveying saturated steam cylinder. Simplified drum made of high quality steel plate, is the boiler in one of the most important parts.
Drum's main function is water, for steam separator, the water in the pot run to exclude the salt water and sludge, to avoid high concentrations of salt and impurities into the pot of water with the steam superheater and steam turbine.
Drum separator and the internal devices, including steam cleaning equipment, water distribution pipes, sewerage and Dosing Equipment And so on. Separation device which is the role of soft drink from the water wall to the left to saturated steam and water, and to minimize the small water droplets carried in the steam. , The low-pressure boilers used as a crude baffle and baffle gap separating components; in addition to the boiler pressure more widely used in various types of cyclone for coarse separation, but also with shutters, steel wire, or both steam plate, etc. further separated. Drum also equipped with water level gauge, Safety valve And other monitoring and protection facilities.
Order to check the performance and improve the design, often have to go through the boiler heat balance test. Directly from the efficient use of energy to calculate the thermal efficiency of the method is called balance, heat loss from a variety of inverse effective way to counter-balance the call. Consider the practical benefits of the boiler room, not only depends on boiler thermal efficiency, but also into account the energy consumed by auxiliary boiler.
Unit mass or unit volume of complete combustion of fuel, calculated by the chemical reaction known as the theory of air demand in the amount of air. To make the fuel in the furnace have more opportunities to contact with oxygen combustion, the actual amount of air into the furnace is greater than the total theoretical amount of air. Although more into the incomplete combustion air can reduce heat loss, but the exhaust gas will increase heat loss, but also increase the corrosion of sulfur oxides and nitrogen oxides. Therefore should seek to improve the combustion technology, strive to minimize the excess air ratio so small combustion chamber completely.
Flue gas contained dust (including fly ash and silica), oxides of sulfur and nitrogen pollution in the atmosphere are the material, without cleaning their emissions targets can be achieved when Environmental Protection Provides indicators of the times to several times. Control measures emissions of these substances before burning treatment, improved combustion technology, dedusting, desulfurization and denitrification, etc.. With high chimney stack nearby areas can only reduce the concentration of pollutants in the atmosphere.
Flue dust used by the force of gravity, centrifugal force, inertia force adhesion and sound waves, static electricity. On the coarse particles by gravity sedimentation and inertia separation, is often used in high-capacity centrifugal separation of dust under the electrostatic precipitator and bag Filter High collection efficiency. Wet Wen's? Water film adhesion of dust in the drop of water film can be fly ash, dust can absorb gaseous pollutants with high efficiency.
The twentieth century since the 50s, people strive to develop ash comprehensive utilization of harm into. Manufactured using ash as cement, bricks and building materials such as concrete aggregate. 70s extract from fly ash and from hollow microspheres, such as a fire-resistant insulation materials.
Boiler future development will further enhance the thermal efficiency boilers and power plants; lower unit power station boilers and equipment costs; to improve boiler operation level of flexibility and automation; to develop more varieties to suit different boiler fuel; improve boiler unit and auxiliary equipment reliability; reduce environmental pollution.
Related Reading: Lankao County to carry out special inspection of the boiler for heating in winter
People: no temperature "small boiler" to be banned
Small boiler black smoke-day law enforcement "hammer" decontamination I am China Agriculture Net writer, reports some information about cartier women watches , cartier automatic watch.
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