Thirteen Five release plan indicates that China's move towards green development pace firmer, Beijing SASAC Building Materials Service Center from its start, the use of green boiler heating for low nitrogen as the primary task before the onset of winter. SAC Building Materials authorities after preliminary investigation and after the screening, the other fast boiler R & D experience in the field of boiler cleaning two decades expressed appreciation can, in August 2017 signed a five Thalia T6 series one boiler and two vacuum with fast Boiler condensing gas boiler products contract.
Features boiler during operation of the drum 1. The composition of operating pressures and gas turbine combined cycle indian steam boiler blowdown waste heat boiler has two or three drum, each drum minutes, run at different pressures, such as boilers combination of three steam drum, the drum has a pressure of a pressure drum, a low-pressure drum. In addition to the low pressure steam low pressure steam into the drum is not generated and the steam turbine into the deaerator, the high pressure steam supply to the steam drum Du machine. Qian any type of boiler, such as the presence or steam separator drum level fault, will produce serious chemical injury; for multi-component waste heat boiler drum, Q will be more serious. Further, in order to save water and energy transfer, sewage discharge way from the upper drum to the lower drum, and chemical changes affect the other drum in a steam drum. 2. Only water wall tube number 1 is set in the conventional exhaust heat recovery boiler waterwall tubes, the tubes can absorb heat due to the surrounding child, the cold side of the hot-side heat conditions conventional boiler waterwall tubes absent. On the other hand the flue gas flow, boiler, different heat flux and heat flux at the last row of finned tube of the first row at the finned tube, the difference was greater at startup. Typically, the first row of fins flue gas stream corresponds to the riser pipe, finned tube corresponds to the last row of the downcomer. However, the temperature rise in the boiler startup phase, as yet supplied to the steam turbine, the flue gas flow tuna rearmost tube sheet may be reversed, so that it corresponds to the initial rise in concentration of the chemical composition should be low, which allows the wall the resulting precipitate was minimal. 3. In addition to the waste heat boiler of the gas turbine combined cycle, oxygen is an important part of the low-pressure steam drum. Typically, low pressure steam into the low pressure steam generated by the drum deaerator feed water and makeup water to provide resources, as alternate start boiler is not provided, so that if the outlet steam pressure boiler system deaerator and the deaerator at start when open to the atmosphere, stop shutdown, the water tank to absorb oxygen, oxygen dissolved in water combined cycle heat recovery boiler causes pitting and fatigue corrosion. 4. The waste heat boiler because the DC current is no waste heat boiler drum, economizer nor evaporator superheater, when water flows through the tube bundle, the position of the interface is dependent on water vapor partial pressure of the water flow and heat absorption. 5. Run peaking gas turbine waste heat boiler can be designed to start and stop frequently, with a peak load operation, the situation in the future, peak load operation with frequent starts and stops often appear. But many ask the waste heat boiler with frequent stops the unit is related to the waste heat boiler difficult to adapt to frequent starts and stops with the state of the peak-load operation, the waste heat boiler operating status will cause a large thermal stress and chemical corrosion. These are the boiler equipment produced in the course of their work which reaction: inside equipment parts need to pay more attention, are carefully marked out.
Leakage impact on the economy and safety of boiler operation? Hazard of air leakage in different parts of the boiler caused not identical. But no matter what part of the leakage, the gas volume will be increased, so that the loss of exhaust gas increases, so that electrical energy consumption is increased suction. If serious leakage, smoke machines have been open to the maximum prescribed negative pressure can not be maintained (the furnace flue), was forced to reduce the air volume, make incomplete combustion heat loss increases, increasing the possibility of slag knot, even We had to limit the boiler output.