steam boiler dew point

Boilers want to develop must avoid weaknesses: at this stage, with the dual economic and technological development in the domestic boiler market, the development of the boiler can be described as flourishing, but the main reason is because of its high efficiency boilers and security, safety and efficiency is a problem in the choice of the boiler industry will be considered. But if you want a better development of the boiler, it must be done to avoid weaknesses. After the boiler equipment has been upgrading many times, at present, the main energy from the gas boiler equipment, not only very convenient to use, and efficient to boil water has been effectively improved. Now the boiler has been applied to many industries, for people to bring efficiency also brings development. Boiler itself has the advantage of very large, and for the industry of energy saving is also very much the industry input costs to a minimum, in the past, the use of staff in the use of traditional boiler equipment, several staff members need to invest in order to control it for the industry increased a lot of cost, which is to contain one of the main development of the industry, although the industry also found this, but the reasons behind the technology, which is also very helpless industry. It saves staff time and effort while improving the efficiency of the work, to improve their own security but also made a great contribution to the development of the industry. Steam boiler operation principle analysis

Inner Mongolia Autonomous Region Development and Reform Commission issued a notice publicity Inner Mongolia clean heating in winter embodiment (hereinafter referred to as "Notice"), "notice" mentioned that in 2019 the region to achieve clean heating rate of 50% in 2021 to reach 705; urban built New forbidden zone 35 tons of steam / hour and below the coal-fired boilers, which Hohhot, Baotou, Wuhai city urban area will phase out 35 tons of steam / hour and below the coal-fired boilers, all new buildings to achieve clean heating.

The region's total heating area of ​​about one billion square meters of urban heating an area of ​​about 750 million square meters, of which: decentralized heating an area of ​​about 090 million square meters; central heating an area of ​​about 660 million square meters, heating rural area of ​​about 250 million square meters, of which central heating an area of ​​about 027 million square meters, the rest are dispersed heating.

Urban areas mainly in the CHP and district heating central heating boiler room mainly to gas, industrial waste heat, wind power, solar and other energy sources to supplement heating. Rural areas with decentralized heating the main heating source mainly scattered coal-fired boilers, conventional coal-fired furnace or straw.

Urban district heating cogeneration accounted for 51.5%, the proportion of area of ​​43.6% heating boiler, gas heating accounted for 4.5%, the proportion of the heat pump in other ways, electric heating and the like about 0.4%.

To clean as the goal, in ensuring the safety of people's livelihood heating premise, overall thermodynamic equilibrium between supply and demand, either alone or using a combination of various cleaning heating mode, alternative urban area and would like to keep burning coal for heating casual, less warm air pollutants areas emission. Adhere to safety bottom line, build a reasonable size, safety and reliability of heat supply systems.

2, according to local conditions, the residents can afford. Based on natural resources, economic strength, infrastructure around such as regulation and install air pollution control requirements, scientific assessment, depending on the region to its own characteristics, full old people's consumption capacity, adhere to both energy security and clean development, should power the electricity, should be coal is coal, the gas should be air, clean heating strategy adopted XI, to promote its low cost and low pollutant emission cleaning combination heating under the same conditions.

Considering the urgency of the air pollution control, affordability, work to promote the difficulty and other factors, co-ordinate the work of promoting cleaner heating city, county and urban-rural.

Key condensing gas boiler condensing boiler key point is that condensing technology, is a new energy-saving, environmentally friendly technology; in fact, the principle is not complicated, simple generalization is the flue gas heat recovery through flue gas condensation. In conventional boilers, the exhaust gas temperature is generally 160 ~ 250 ℃, or even higher, so that water produced during combustion of the fuel (e.g. natural gas: CH4 + 2O2 → CO2 + 2H2O) is in a state of steam superheater in the flue gas, with the smoke. the loss of gas from the chimney. Traditional boiler thermal efficiency is generally only 85% to 91%. The Henan fast condensing gas boiler side, that the exhaust gas temperature is reduced to 35-60 deg.] C, sufficiently recovered latent heat of condensation and sensible heat in the flue gas water vapor, maximum thermal efficiency of up to 108.9%.

Shutdown operating steam boiler dew point steam boiler shutdown is divided into two kinds, the temporary shutdown (within three days), complete shutdown (shutdown or overhaul more than three days). A steam boiler temporary shutdown: 1, according to the actual situation, the appropriate weakened combustion, stopping the steam, followed close blower, Fan, grate steam sector. 2, until the furnace temperature dropped to fire when the pressure starts 400 ℃, covering the layer of wet combustion of coal seam, close the damper, coal down the shutter, open the exhaust valve exhaust. 3, the boiler water level to be adjusted to a vapor pressure drop 0.15MPa when the maximum operating level, closing the main valve until the furnace temperature dropped off when the main power 200 ℃. 4, run the table in the line of steam boilers make a record, do the work of changing of the guard. 5, steam boiler pressure during the fire need to have someone on duty to prevent coal combustion and boiler water and other accidents. Second, the complete shutdown steam boiler: 1, the steam boiler is stopped an hour earlier coal supply steam, the steam to be sequentially turned off after stopping blower, Fan, grate. The excess coal in the coal hopper picking out, open grate, coal and slag in the furnace cleaned up. 2, adjust the boiler steam boiler water level to the maximum working level if the shutdown to one week, open the exhaust valve, the pressure to be reduced to 015MPa, the main steam valve closed. 3, steam boilers quickly opened if the maintenance or long-term shutdown, the pressure drop 0.4Mpa all drain valve, drain the boiler water, dried using waste heat boiler and do respond to treatment. (Note: You must turn off the furnace temperature drops after about 200 ℃ can turn on the water). 4, turn off the main power shutdown, make relevant records on the operation table boiler.