Problems and solutions smoke flue gas condensation problems outer fuel gas steam boiler flue gas circulation technology for low NOX combustion, but since the flue gas circulation method requires an outer part of the fumes at reflux for mixing fuel gas with the cold air of the steam boiler, after mixing the temperature will drop sharply, resulting in condensation. Even at reflux smoke and cold air is mixed at a timely discharge of condensate, but due to the combustion air humidity after mixing is still saturated, still occur in the pipeline again condensed before entering the combustor. Therefore, it may cause internal main burner and blower moisture, water, and even lead to serious consequences electrical short circuit, corrosion. Affect the normal operation of the main burner and blower, shortening the life of the burner, or even damage the burner. So, to solve the problem of fuel gas steam boiler flue gas condensation on the external flue gas recirculation very important to the development of low NOx combustion technology. Common external flue gas recirculation system for low NOX combustion, flue gas condensation problem can be solved usually by reflux smoke, cold air, or a mixed flue gas is mixed with the cold reflux heated. Of course, how heated? How much is heated to a degree?, Would require careful fine. Because the temperature is too low, flue gas condensation problems are not resolved, the temperature is too high, the burner will damage; the temperature of the heating process control is very important. The heating source may be a flue gas waste heat, waste steam, or other auxiliary heat source. Considering investment costs and operating costs, it is recommended that: the use of boiler production of high-temperature water / steam indirect heating combustion air, solve the problem of condensation after mixing combustion air and flue gas with the most simple way. Of course, it is heated to reflux or flue gas mixture according to the situation. The heating temperature by controlling heat transfer equipment hot water / steam regulating valve to control.
Selection and heat production of chinese hot water boiler prices valve opening and closing of computing: hot water boiler, which is common and one of the common types of boilers, but also we need to know and understand the specific species, because its products are still website in it, we can not ignore its existence. And here, it is based on the specific requirements, to learn and understand the hot water boiler, this can also be achieved using the correct and rational use of the boiler. 1. hot water boilers and steam boilers, boiler how to distinguish between the two? Hot water boiler, which is hot water of a certain parameter, and the steam boiler, which is a certain parameter of steam. Therefore, these two boilers can get in on the product, it is not the same. In addition, members are employed, it is not the same, for example, a circulation pump hot water boiler, but no steam boiler. Steam boiler water level table to use, but does not require hot water boiler.
First look at the history of chinese hot water boiler pricess and steam boilers. The history of hot water boilers can be traced back to a long time ago, and the rapid steam boilers only began to spread in the past 200 years, which has a certain impact on traditional hot water boilers. If the space available to the former is small, or is subject to greater restrictions, people generally choose the latter quickly. The space required for a fast steam boiler is only 25% of that of a hot water boiler, and no special retrofit and indoor layout adjustments are required. The fast steam boiler not only has the advantage of occupying a small space, but also has a small amount of water in the furnace. This feature allows the steam boiler to generate steam in 5-7 minutes after the cold start, and work normally. The hot water boiler can only start to supply steam after about 60 to 90 minutes after the cold start.
Chongyang County, Hubei Province since the second half of 2015 to carry out the work out of small coal-fired boilers, non-New 20 tons of steam / hour and below the coal-fired boilers, the full implementation of small coal-fired boilers out of work, with environmental protection, Development and Reform Commission, by letter and other related sector wages, work to strengthen the efforts to promote thorough investigation of strict control to ensure that the county's non-compliance of small coal-fired boilers have all been eliminated remediation. In the specified date (June 30, 2017) completed the small coal-fired boilers out of the task before. Up to now, Chongyang County is not a new coal-fired boilers.
It is understood that, recently, joint quality supervision department of Chongyang County People's Government of Hubei Province, a special selection of personnel to carry out "looking back" activities for the phasing out small coal-fired boilers, special personnel division of responsibilities is based on special teams, focus on examination paper, under chemicals, wine, agriculture, and several other sectors and enterprises of boiler equipment, non-small coal-fired boilers happen "resurgence" phenomenon.
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