The utility model provides a kind of flexible sealing attemperator for boiler bottom support, including water-cooling wall lower header, thermal insulation concrete layer, furnace wall, comb sealing plate is set on the casing of water-cooling wall lower header, the inside edge of comb sealing plate sets short flexible expansion section to be connected as a single entity, comb sealing plate and filexlib. An attemporator controls steam temperature while a desuperheater removes whatever superheat there is in steam and reduces the temperature to a point at or nearly at saturation temperature. Attemporators are generally found in and/or associated with boiler steam, in zones where too high of a temperature affects something down stream of that point. Attemperator is a spray of water to reduce the steam temperature that is limited as per the operational requirements. An Attemporator spray reduces the steam temperature in the superheater zones of a boiler so as to maintain around 535-540 degree centigrade temperature at the inlet of the steam turbine.
Features and benefits include: Non-contact attemperator that uses boiler water as the cooling medium, No risk of water carry over that is often associated with a spray type de-superheater, External modular heat exchanger completely integrated into boiler steam and water circuit, Boiler circulation checked and verified as part of the design,
Spray flow attemperator is used for controlling superheater outlet steam temperature in power house. The attemperator undergoes cyclic thermal load and pressure and is prone to failures
1. Circumferential in-line attemperator. In this design, water is injected perpendicular to the pipe steam flow through spray nozzles to desuperheat steam.
Boiler Basics Design and operation A boiler is an enclosed vessel that provides a means for combustion heat to be transferred into water until it becomes heated water or steam. The hot water or steam under pressure is then usable for transferring the superheater, attemperator, steam system, condenser and condensate pump. In addition, there
Superheat Attemperator Spray Valve With varying load requirements in many power plants, varying steam temperatures are inevitable. In drum style and once through. ATTEMPERATORS Continual vigilance resident expert/troubleshooter on heat-recovery boilers. defined as an attemperator outlet steam temperature of less than 50. Desuperheating Steam.
The failure of an attemperator at a boiler steam line in an integrated steel plant has been investigated. There were four multi-fuel boilers, each having a production capacity of 136 T/h, in a power house of the steel plant. The boilers were having steam pressure of 63.5 kg/cm 2 (gas) and the superheater outlet temperature of 485 °C.
It is essential to consider the following while designing a superheater: 1. uniform distribution of steam in all directions to avoid unbalanced flow. 2. steam velocities should be high enough to keep the metal temperature at minimal. 3. to minimize steam pressure losses. 4.
An attemperator is designed to create a spray of uniform, small water droplets that will evaporate quickly in the process steam pipe. If the water flow and pressure drop through the nozzle are
An attemperator is designed to create a spray of uniform, small water droplets that will evaporate quickly in the process steam pipe. If the water flow and pressure drop through the nozzle are
Single loop steam temperature control is the minimum control strategy for reheat steam temperature leaving the boiler and shall be used only fo