Energy saving condensing fire tube gas fired steam boiler for heating

Steam boiler overpressure phenomenon and treatment of energy saving condensing fire tube fired steam boiler for heatings refers to water heated to a certain temperature parameters and the production of industrial steam boiler, the water in the steam drum is heated to become vapor, fire emits heat in the furnace, it is the principle of the steam boiler. Steam boiler belongs to special equipment, design, processing, manufacturing, installation and use of the boiler must be supervised by technical supervision departments, users only get to use the boiler permits to use steam boilers. The fuel steam boiler (electricity, oil, gas) can be divided into an electrical steam boiler, steam boiler fuel, gas steam boiler three kinds; constructed according to the steam boiler can be divided into vertical, horizontal steam boiler, steam boiler mostly small and medium sized single , double the return of the vertical structure, large steam boilers and more horizontal structure of three return. Steam boilers and boiler overpressure phenomenon processing method, the phenomenon of over-pressure boiler steam pressure ⑴ sharp rise exceeds the allowable operating pressure, the safety valve pressure gauge pointer over the red line pressure is still elevated. When the interlock ⑵ overpressure protection device operation, overpressure alarm should be issued to stop the air blowing, the wind, coal. ⑶ steam temperature rises and steam flow. 2, boiler overpressure treatment ⑴ weakened rapidly burning, manually open the valve or bleed valve. ⑵ increase the water supply, while strengthening the lower drum sewage (you should pay attention to maintaining normal water level boilers), to reduce the boiler water temperature, thereby reducing the pressure drum boilers. ⑶ safety valve pressure gauge malfunction or all of the damage, emergency shutdown, safety valves and pressure gauges are to be repaired after the boost operation. When ⑷ endanger the safe operation of the boiler overpressure occurs, the buck should take measures, but too fast buck is strictly prohibited. The ⑸ serious boiler overpressure eliminate, to the shutdown of the boiler internal and external inspection, to eliminate the overpressure caused by deformation, leakage and other safety accessories and maintenance unqualified.

Coal-fired boilers to gas boilers benefits and precautions With the rapid development of national energy-saving environmental protection, the traditional coal-fired boiler can not meet the needs of the times. Therefore, the coal-fired boiler biomass boiler or gas boiler has become in many boiler user's choice. Before the transformation, to understand the difference between .1 and gas boiler fired boiler. Circulating fluidized bed combustion boiler fired by coal crushing device fluidized combustion process, the coal by crushing device percutaneously into the bunker through a the spreading coal coal injecting air into the furnace; circulating ash by heating, fluidized combustion process. When the coal into a gas fuel is injected directly into the combustor for combustion. 2. Combustion of Coal is mainly composed of C, H, O, N, S, ash and moisture and other elements. Generated when coal SO2, SO3, NOx ash and moisture, and SO2, SO3, NOx from flue gas emitted into the atmosphere, pollute the environment and cause harm to humans. The main components of the exhaust gas and coke are CO and H2. The main produce CO2 and H2 post-combustion, much lower than coal-fired boiler SO2, SO3 and NOX emissions. 3. Ventilation pressurized combustion coal combustion boiler used in a combustion mode. The bottom of the combustion process through the induced draft fan with fan and completed. In the combustion of coal, it requires a lot of air. Gas under a slight positive pressure in the boiler or burner slightly negative pressure, which requires less airflow. Burner air may be pre-mixed with natural gas. 4. coal boiler control reasons, material thickness, amount of wind, the wind volume, wind and other than coal, coal-fired boiler is difficult to automatically adjust the operating parameters of the boiler according to the load. However, fewer factors gas boiler, the burner valve can be adjusted according to the size of the load, easy to implement automatic control. Coal-fired boiler to a gas boiler Notes: Main results are as follows: (1) small boiler, the coal-fired boiler to a gas boiler, i.e. the negative pressure of combustion from the original to the current combustion slight positive pressure, and must pay attention to the furnace wall structure sealing problems. Closely related (2) selection and arrangement of the burner and furnace, the degree of filling of the flame in the furnace is preferably not formed dead air, to avoid the interference of adjacent flame burners, to avoid interference from adjacent burner flame. Unburned gas - air mixture should not be in contact with a heated surface, in order to avoid incomplete combustion. Gas combustion. Gas burner arrangement disposed conduit and ducts should be considered reasonable gas pipe and duct arrangement, ease of operation, inspection and maintenance. (3) the transformation of coal-fired boilers is mechanized layered gas boiler should be removed before the arch and the arch, and the bottom heating surface increases, in place of the grate, the grate to prevent overheating. Gas Velocity (4) on heat transfer surface of the fly ash is not restricted abrasion conditions, convection heating surface heat transfer coefficient is increased, increasing the pressure in the boiler where H is unduly increased. Boiler erosion surface. At this time, the capacity of the boiler should be noted that the steam separator to ensure the quality of the steam.

Qinhuangdao City Funing District Branch of Ecological Environment Agency organized the key enterprises responsible person within the jurisdiction of the boiler demolition, renovation work will hold a special schedule. The meeting stressed the need to vigorously promote coal-fired, gas-fired boiler demolition, renovation work progress, continued to improve ambient air quality.

At the meeting, staff of the Office of atmospheric area of ​​the current coal-fired, gas-fired boiler demolition, renovation progress has been informed. Up to now, boiler demolition and reconstruction of the region involved all disabled.

First, Funing District compressed air quality improvement increasingly smaller space, air pollution prevention and control situation is very serious, involving various enterprises must attach great importance to effectively assume responsibility for environmental protection.

Second, the coal-fired boiler in accordance with the "water power, chimney down, shifting the body" standard transformation and low nitrogen oxides emissions analyzer mounted nitrogen gas boiler work requirements, make sure the end of this completed, the embodiment late cut-off regulation.

Third, the Bureau of atmospheric sciences, environmental law enforcement unit to further strengthen law enforcement and inspection and supervision, the monitoring center to provide scientific data monitoring, to crack down on environmental violations, it is important to ensure that coal-fired, gas-fired boiler demolition, renovation work is completed on time.

The following are the nine safety devices gas energy saving condensing fire tube fired steam boiler for heating. 1, water level monitoring: the original four water level is detected on the basis of a new fifth level detection, water level in cooperation with electronic detection devices, more comprehensive monitoring of boiler water level. 2, set the time: the user can set the starting time required to stop the boiler, free combination, convenient and flexible. 3, leakage protection: when the control system detects leakage electric heating elements, will automatically cut off power to prevent leakage fault occurs. 4, water protection: When the boiler water promptly cut off the gas burner control circuit to prevent the occurrence of dry damage the burner, while the controller sends water alarm indication. 5, power anomalies protection: Upon detection of a power failure, the boiler will stop running immediately. 6, the interlock overpressure protection: When the boiler pressure exceeds the user set value, the burner operation is prohibited and the alarm. 7, pressure controller, water level alarm, safety valve, low water level alarm and other multiple security. 8, a complete gas valve and protection system: providing a gas valve and accessories from whole filter, regulator and solenoid valve, ensuring safety gas. 9, real-time monitoring of flue gas: exhaust gas temperature of the boiler can be automatically monitored more easily grasp the combustion boiler.

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