In recent years, as people's growing awareness of environmental protection, the State also intended to promulgate stringent emission standards for nitrogen oxides. This boiler companies made a mandatory requirement - how to effectively reduce nitrogen oxide content in the boiler flue gas. Therefore, a focus on emissions of nitrogen oxides environmental revolution is quietly boiler industry. But for domestic boilers companies this road is not good to go, because the difficulty of controlling nitrogen oxides and more demanding of the boiler, every 1 mg / cubic meter of emissions control will cause the boiler costs dramatically.

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.

The importance of water supply equipment Gas supply equipment continuous fire tube fired fulton steam boiler price steam boiler 1. The effect of gas boiler room in the boiler room of the water supply equipment is a very important device all the boiler system. It is responsible for steam boiler feed "raw material", it can be a need to use the normal production of steam. During the operation of the boiler, the water supply equipment necessary to support synchronous operation, in order to continue to supply feed water to the boiler, the boiler can get enough water supply in normal operation safely. 2. Classification feedwater steam boiler steam boiler water supply equipment, there are two methods of water supply, water supply and electric steam-driven water supply categories. Steam-driven water supply equipment mainly refers to water vapor and reciprocating pumps, spare typically acts on the boiler water supply equipment. Another method of comparison used is an electric water supply through an electric centrifugal pump for water supply and vortex. Steam boiler during operation usually needs water supply equipment with active control function, the choice of the water level drops to a certain position to take the initiative to open pump water to the boiler, the water to a certain position but also take the initiative to stop the pump "bit" type conditioning. Boiler feed water can also be (a) water conditioning or heating condition circulated. Therefore, the gas boiler are usually equipped with an electric centrifugal or vortex pump, not equipped with the movable steam supply equipment.

Process safety valve check valve gas fire tube fired fulton steam boiler price is one of the three safety accessories gas steam boiler, when the boiler pressure is too high, the pressure relief valve will automatically exhaust, gas steam boiler is the important safety equipment . The case of a new installation, overhaul, lack of consumer safety valve shutdown and restart more than three consecutive months, have had to re-check safety valve, safety valve to ensure accurate and reliable by the company safety officer, boiler technician, run operators, maintenance personnel together with the completion of the adjustment. Valve adjustment procedure is as follows: 1, the steam boiler when the gas vapor pressure close to the operating pressure of the safety valve, and retest check valve to the air motor exhaust, drainage accident flexibility and reliability of the electric valve, and the panel reinspection situ pressure gauge, the water level of accuracy, such as failure, not allowed to heat the school. 2, ready to call and check the quality of communication tools, a signal indicating whether the good. 3, adjust the safety valves, boiler pressure should be kept stable, pay attention to monitoring gas steam boiler drum level, and maintain normal. 4, steam boiler safety valve to adjust the pressure gauge in place of instructions shall prevail. If necessary using 0.4 or more for the accuracy of the gauge. 5, adjust the safety valve should be carried out only by descending. It should checksum gas steam boiler tuning high pressure safety valve, after the school seizure of the entire set of low pressure relief valve. 6, the following should be in the 0.3MPa, the movement preventing measures must do a good job of setting relatively low pressure steam boiler safety valve safety valve before adjusting. 7, by combustion, and exhaust steam adjust the degree of opening to the air slowly and smoothly up to the required setting pressure. 8, when the gas pressure steam boiler safety valve set pressure to rise if action is normal, then the action and reseating pressure values ​​recorded. If action is not correct or not action should be immediately opened to the air exhaust valve, while the combustion boiler weakened, stop boost, and buck 0.3MPa or less, re-adjust the boiler technician as required by maintenance personnel, until the compliance date. (Lead or lag 0.05MPa action is normal). 9, after the completion valve to adjust gas steam boiler, boiler 0.3MPa or less down to the lifting device and can be installed and fastened to the protective cover, a braking measure required under check valve removal, then Articles 7, 8 verify until all required safety valve calibration check is completed. 10, the safety valve to adjust the gas boiler, check the results recorded in the "safety valve to adjust the recording Visa" within the participants should verify the signatures and Internet safety valve input to the corresponding data in the ledger. During operation gas steam boiler, not only to regularly check on the safety valve, at the same time, we must regularly monitor boiler inspection to ensure that the boiler fully meet the safety requirements!