西宁地区h燃煤蒸汽锅炉已处.docVIP

西宁地区6th燃煤蒸汽锅炉设计 Design for the Steam Boiler of XINING Region Abstract Our country produce and consume the most coal in the world,our country is one of countries which essential resource is coal.There is the most industrial boils in our country.By the end of 1998,there are about 0.5million industrial boils,and 430 billion kilogram coal has consumedThe theme of this document is to design a vapor boiler, whose type is ‘SHL6-1.27-WⅢ’. This kind of boiler is suitable for the regional heating and heating of the area which has an elevation of 2200 meters in xining region in qinghai provinceNow, the following is the simple introduction of characteristic of this boiler. This boiler is double-drum natural circulation boiler, there are many water walls around the furnace. To ensure the continuous and steady ignition in the furnace, I take the high and short front arch, while the back arch is low and longIt is proved that it can increase the height and of the furnace to make it adapt to the operation of an elevation of 2200 meters district. Behind the furnace is the burning-out zone. There are dense water-tubes between the two drums, which compose the main boiler surface. In the back pass, There is air-heater, the aim of setting the air-heater is to strengthen ignition and firing, meanwhile to lower the exit-gas temperature and improve the efficiency of the boiler. The burner equipment is chain-grate, the design fuel is anthracite I whose lower heating value is 29400KJ/kg. The main data cited below give perspective of the quantities involve this boiler. The boiler overall efficiency is 73.3768 %, stack gas temperature is165℃, consumption of fuel is 0.2071kg/s, the area of radiate heating is 40.2459?, the area of convection heating surface is126.5234?,the boiler capacity is 6 t/h, the area of grate is 13? The explanation about the characteristic of every part of boiler and design process will be stated in the context. This document involves four main parts: heat acco