high quality best gas fired steam boiler

high quality best gas fired steam boiler

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.

Principles of high quality best fired steam boilers and solutions hydraulic external gear of Henan fast boiler's small series with you about the principles of steam boilers and solutions Steam Boiler hydraulic external gear in accordance with the fuel (electricity, oil, gas) can be divided into electric steam boilers, oil three kinds of steam boilers, gas and steam boiler; constructed according to the steam boiler can be divided into vertical, horizontal steam boiler, steam boiler compact than a single, double return of the vertical structure, large steam boiler return of more than three horizontal structure . If the classification according to top standards, in the form of steam boilers on the lot, would like to give an ordinary packaged boiler say four tons vapor. 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 combustion section and drive means by a chain grate, a combustion chamber together with the pan rack frame formed on a grate composition. Four weeks envelope refractories. From coal fired into the hopper, the shutter coal front portion while sealing air control seam thickness. Blowing into the combustion chamber is a lower place, such steam boilers greater resistance, require forced air. Steam boiler cinder burn out, the rear portion of the grate by the "beak iron" discharged from the slag out of the furnace feeding machine. Steam boiler flue gas from the back of the boiler, the steam drum of a boiler return line before the smoke tube, returned by two return rear smoke tube, and then into the dust separating ashes, and then discharged through the chimney draft fan. These are the works of steam boilers, steam boilers run course, ultimately, other devices, such as induced draft fan not only bear the task of exhaust fumes, or negative pressure necessary for operation of the steam boiler. As well as pressure vessels, thermometer, safety valves, pressure gauges, pumps, steam pumps, and so on. They are essential for steam boiler work. Pump leaks. Gear pumps for leaks during operation, leading to its actual output is smaller than the theoretical flow of traffic. The main channel is leaking gear pump: through the gap between both surfaces and both side surfaces of the gear cover side leakage, accounting for 75% to 85% of the total leakage of the pump; radial gear tip circle between the inner hole and the pump CLEARANCE ; gap by engagement of the gear leak. The gear pump due to the presence of a leak, so that the output pressure do not increase, the influence of the use of a gear pump. In order to solve the low gear pump output pressure problems, may be employed on both sides of the elastic gear plus floating collar or baffle manner, to reduce the leakage of the gear pump, the gear pump to increase the output pressure. Radial force imbalance. In the gear pump during operation, the pressure acting on the outer gears are not equal, resulting in the gear and bearing at the axle radial imbalance force. This unbalanced force will accelerate the radial bearing wear and reduce the service life of the bearings, the gear shaft deformation can also cause friction with the inner hole of the addendum pump, pump damage, so that the pump does not work. The solution generally adopted is: ④ opening pressure balancing grooves to the pump, the high pressure oil introduced into the low pressure zone, but will increase the pump leak, the influence of the volumetric efficiency of the pump; ② size reduction oil pressure chamber, acting on the teeth the pressure area is reduced, thereby reducing the radial force imbalance.

Combustion characteristics and operation of high quality best fired steam boiler steam for steam boilers everyone know how much will the following to let everyone have a preliminary understanding of the steam boiler by two aspects, but also hope to give a friend wanted to buy a steam boiler of some help. Chain-type layer is generally fixed combustible fuel steam boiler chain grate or a grate (the traveling), it is fixed only for small coal-fired boilers. The most commonly used medium-sized coal-fired boilers or for chain grate, as the chain travels will gradually sent to the tail of the coal grate in the process of moving complete fuel combustion tube from the inlet to the lower part of the grate grate internal supplemental air required for combustion, ignition top-down, no ventilation grate uneven seam and around the relative movement, through non-flammable. After heating area of ​​the heating flue gas temperature of the working fluid designed to flow through the same furnace hot flue gas and heating surface arranged in the other exhaust flue boiler. Incidental chain grate type, scale type, beams, and other means, the current domestic applications mainly for small and medium-sized joint type and scale type chain grate, generally large chain grate beam type. Former steam boiler steam boiler system to start all waterproof steam cylinder valve open, let go condensate. The inlet steam valve slightly open, to warm up the cylinder, drain cocks to be out after closing the steam, drain cocks. The steam valve was then opened progressively larger until drainage tank vent cock and water out there, and closed vent cock drain cocks. Turn on the water supply valve to the boiler feed water. Steam boiler in operation if there is gas in timely attention tank, water tank periodically open the air discharge valve, in order to avoid air resistance tank, the influent. Pump flow regulator bypass should be adjusted to achieve the degree of opening of the valve, and not with a method of adjusting the outlet valve is adjusted. At the rated discharge pressure of the pump, which inlet pressure should not exceed a predetermined value. Inlet and exhaust pressure difference should be maintained within a predetermined range. Steam boiler steam valve should be shut down first, then turn off the water valve and turn on the water valve is open, then turn on the water faucet open the lower part of the tank and cylinder, the cylinder water drain. Of steam cylinder reciprocating pump, which cylinder two stroke difference should not exceed 5% of rated travel.

At the completion of the city's foundation 10 steam tons / hour and the coal-fired boiler Chaigai, and gradually expand the coal-fired boiler demolition and clean energy transformation range, before the end of 2020, the city planning area basically eliminated 35 tons of steam / coal-fired and boiler.

Xinyang, Henan decreasing year by year funding award boiler fill ways:

(1) the completion of the coal-fired boiler Chaigai before the end of October 2018, giving not less than 60,000 yuan / tons of steam financial awards complement;

(2) the completion of the coal-fired boiler Chaigai before the end of October 2019, giving not less than 40,000 yuan / tons of steam financial awards complement;

(3) complete Chaigai coal-fired boilers for the end of October 2020, the prize money will not give up.

At present, many City in Henan Province have been put forward relevant atmospheric Prevention Act, because the policy has landed Henan Province, allowances and Chaigai range of boiler Metro Toronto are the same.

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