Calcium carbide furnace waste heat grate for back boiler portlaoise is a device that relies mainly on the arc high temperature to melt lime and carbonaceous materials (coke, anthracite or petroleum coke), then react to generate calcium carbide. There is a great energy waste in the process of calcium carbide production, such as waste heat output from tail gas and sensible heat carried by calcium carbide tapping. The utilization of waste heat can bring considerable economic benefits for the enterprise, conform to national energy policy, achieve the purpose of environment protection and energy saving.
Use of superheater and reheater in claim 1, the working characteristics of (1) a high vapor pressure, pressure may reach a supercritical or more; (2) superheater and reheater within the grate for back boiler portlaoise working fluid temperature of the highest member; (3) Steam (especially reheat steam) poor capacity of the cooling duct. 2, work requirements (1) to run a stable steam temperature should be maintained: fluctuations do not exceed -10 ~ 5 ℃; (2) superheater and reheater have reliable temperature control means so that changes in the operating conditions within a certain range when the steam temperature to maintain the rated; (3) minimizing the thermal variations between the parallel tubes.
According to statistics, Zhejiang Province, coal consumption totaled 145.91 million tons, accounting for 56.8% of primary energy consumption in the province. Although after careful environmental management, but the main coal-dominated energy consumption remains high in the province's total emissions of air pollutants. In the "Zhejiang Air Pollution Control Action Plan (2013-2017)" issued in December 2013, the coal-fired pollution control remains a top priority.
According to "Zhejiang low-carbon development" Thirteen Five "plan", as of 2020, the province's proportion of non-fossil energy sources will be increased to about 20%, the proportion of the total coal consumption should be reduced to around 42%.
June 15 this year, Hangzhou Iron and Steel Group ironworks blast furnace in the chimney successful blasting, declared the "three noes" no way to urban development of Hangzhou steel companies, no coal-fired generating units, there is no standard yellow car.
To control pollution from coal-fired source, Zhejiang Province, facing elimination from the transformation of the boiler parties policy, funding, pricing, comprehensive resources supporting the work in 2015, 2016, 2017 were given every right out of steam coal-fired boilers tons 15,000 yuan, 12,000 yuan and 10,000 yuan subsidy funds.
To eliminate 10 tons of steam / hour of coal-fired boilers, in October 2014, Zhuji City, party and government "leaders" personally took, within three months, through the introduction of reward and subsidy standards, regular assessment and other measures, the city's 1964 stage production behind coal-fired boiler demolition 1508 units, 390 units to natural gas or electricity, and the rest use biomass fuel, gas tank or centralized heating, completed the task of transformation. It is estimated that, this year more than 500 tons of sulfur dioxide emissions.
After a clear goal, the province's coal-fired boiler (kiln) transformation to accelerate out of the furnace. According to statistics, in the first half of this year, Zhejiang Province eliminate small coal-fired boilers 6200 Taiwan, has completed 77.5% of the annual task of eliminating.
Also mentioned briefly in front of the thermal efficiency condensing grate for back boiler portlaoise is higher than ordinary boilers, we will talk about further in-depth thermal efficiency. Why focus on how the thermal efficiency, thermal efficiency have so important? Of course, important! The level of thermal efficiency of a boiler will determine the energy consumption of these boilers, in other words the thermal efficiency is related to everyone pocket money!