continous monitoring steam boilers
Hot water boiler does not use softened water What are the hazards? In hot water boilers, water softening, if not, then what will bring tail number, this A boiler is concerned? Why raise this issue, the reason is very simple, because following, will solve this problem, to be specifically addressed, so that we can clearly understand, do not leave any doubt. Hot water boiler, which does not use softened water, then the damage to the boiler, or is adverse consequences, mainly the following, specific for: a Hazard: If the waste fuel, hot water boiler is not used to soften water, then prone to fouling phenomena inside thereof, so that the heat transfer performance is lowered by heating boiler, heat can not be timely delivery, but the flue gas is taken away. So, you want to ensure thermal efficiency, then, it is bound to be more than adding fuel. Furthermore, the resulting waste of fuel. Hazard II: boiler heating surface damage, even if the damage to the furnace and flue gas hot water boiler, the temperature rises high, then it will increase the temperature difference between the heat on both sides of the face, which for the heating surface, this is a very bad. If there is pressure in the boiler, then there is a wall of drum kit and even rupture. Further, such heating surface damage. Hazard three: reduce the boiler output in hot water boiler, because there is no use softened water, it will lead to scaling problems, as well as a waste of fuel. This boiler output, is very unfavorable, because it will reduce it. So, this is what we need to pay attention. Hazard IV: Priming If, in the boiler water contains more sodium chloride, sodium phosphate, greases and silicide, or water and organic alkali saponification reaction, then, when the boiling water evaporated in the boiler, which the liquid will bubble to form a priming phenomenon problem. Hazard five: the destruction of the boiler water circulation boiler for water, its quantity in circulation, it must be balanced. If you have a boiler fouling, then the moisture resistance will increase. Thus, disruption of normal circulating water, and that the metal wall temperature. In this case, prone to burst pipes phenomenon, a direct threat to the safe operation of the boiler.
About continous monitoring steam boilers superheater tubes 1 Blasting failure, bursting phenomenon superheater tubes a. Steam discharge sound or explosions near the superheater. B. abnormally decreased steam flow, and the flow is not less than the water flow normally. C. furnace pressure is reduced or made positive, the door severe, see the fire and smoke outwardly steam discharge hole. D. flue gas temperature after superheaters abnormally decreased or increased temperature difference before and after the flue gas superheater. Serious E. Damaged, the boiler steam pressure drop. F. exhaust gas temperature decreased significantly, the chimney flue gas into a gray or white color. g. draft fan load is increased, the current increased. 2, the superheater tubes blasting process a. Superheater tubes minor rupture, may be appropriate to reduce the load, maintain operation in a short time, this time should be closely monitored for leakage, at the same time, rapid start standby boiler. If the monitoring process fault conditions worsen, it should be shutdown as soon as possible. b. When severe rupture superheater tubes must emergency shutdown.
It must be noted: When someone is working inside the drum, the drum must have someone outside monitoring. 2, before entering the combustion chamber or flue work must be taken ventilation, anti-virus, fire, explosion-proof measures. And the total flue chimney flue or other operation of the boiler is connected to the gates are closed tightly.
Harbin Thermal Power Co., the main city of Harbin is the largest cogeneration business, the company bear the city's heating area of 24 million square meters, to provide heat supply for more than 400 agencies, enterprises and 140,000 residents. Currently, the company is actively respond to the latest environmental standards introduced in China, the group mobilized up and down, stepping up technological innovation, upgrading environmental protection facilities, the project is expected to complete upgrading coal-fired boiler at the end of this year.
Harbin Thermal Power Co., the existing five boilers for heating and power generation: where to cogeneration units No. 7,8,9, and the other two hot water boilers. No. 9350 MW units which since 2017 was completed and put into operation, has achieved ultra-low emissions standards during construction. 7, No. 8 is 300 MW units were built in 2005 and 2006, these two units of environmental transformation began in 2013. Harbin Thermal Power Co., according to the latest environmental requirements, environmental upgrading facilities. First, soot emissions transformation, the introduction of advanced electric bag filter, followed by addition of sulfur, in addition to the transformation of nitrate, new burners in addition to the low nitrogen oxides of nitrogen, a wet desulfurization technologies in addition to sulfur dioxide. After four consecutive years of continuous transformation, 7,8 units in 2017, all the transformation is completed, achieve ultra-low emissions standards. For the two 116 MW hot water boiler was built in 2013, it has long been included in the transformation plan. Earlier this year preparatory work has been completed and environmental transformation has entered the bidding process in mid-October to start construction, completed renovation project at the end of December.