The "thermal power revolution", which is quietly staged in the Northwest
In recent years, environmental protection and energy conservation are vigorously advocated, and the state is constantly developing the strong power. The development of the form will promote the transformation of coal for thermal power generation, and the clean coal combustion technology has become an important measure to protect the environment and increase the efficiency of the coal.
At present, our country mainly used in chain grate boiler, actual operation about combustion efficiency and thermal efficiency of the boiler is lower than the international advanced level of 15%, soot emissions accounted for about 44.8% of the country's total emissions, carbon dioxide emissions accounted for about 10% of the country's total emissions, sulfur dioxide emissions accounted for 36.7% of the country's total emissions. Under the pressure of environmental treatment, the clean and efficient utilization of coal has become a top priority for the continued development of thermal power plants.
Northwest China, as a region rich in coal resources, has a large number of high-quality thermal coal that is suitable for pulverized coal production, which is low sulfur, low phosphorus, low ash and high calorific value. The Coal Pulverization project in thermal power plant has great potential in Northwest China.
For a long time, the use of coal for thermal power generation has become the main way of various power plants. In the future, coal will still be the focus of coal consumption, and the proportion of coal and electricity will continue to increase, reaching 54.74% in 2020, and the coal demand in China will peak in 2020.
In the various ways of clean and efficient utilization of coal, coal pulverizing is a way with significant economic and environmental benefits. Coal pulverized coal is a highly efficient pulverized coal produced by pulverizer and its supporting equipment. The most common way of use is to supply industrial boilers for power generation, heating, steam and hot water supply, which has significant economic and environmental benefits.
At present, with the "action plan for energy saving coal upgrading and transformation (2014 ~ 2020)" issued, "the implementation of more stringent environmental standards for energy efficiency, accelerate the upgrading and transformation of coal-fired power generation, and strive to achieve the power supply coal consumption and pollutant emissions, the proportion of total energy consumption of coal decreased by three." It has become an important basis for the popularization of coal pulverizing projects in thermal power plants, and the coal fired boiler has become a trend in thermal power generation.
As an important coal producing area in China, thermal power generation is the main mode of power supply in the northwest. According to the relevant data show that the total amount of industrial coal-fired boiler in northwest area of about 46 thousand Taiwan accounted for about 10% of the total industrial coal-fired boiler; coal consumption of about 80 million tons, accounting for the national industrial coal-fired boiler coal consumption of 11.4%; annual emissions of soot 1 million 170 thousand tons, accounting for about industrial coal-fired boiler soot emissions in 14.9% years; sulfur dioxide emissions from 830 thousand tons, accounting for industrial coal-fired boiler emissions of sulfur dioxide 13.25% years; nitrogen oxide emissions of 960 thousand tons, accounting for industrial coal-fired boiler NOx emissions 12.3%.
Industrial boiler thermal power plant using coal as fuel can reduce energy consumption and pollutant emissions: the transformation of traditional coal-fired boiler pulverized coal combustion for pulverized coal fired boiler was higher than 98%, the boiler thermal efficiency is higher than 90%, compared with the traditional boiler energy saving more than 30%, the smoke is less than or equal to 30mg/m3, sulfur dioxide, nitrogen oxides two less than 100mg/m3, less than 200mg/m3, lower than the national emission standard around, meet the strict requirements of environmental protection.
Under the pressure of environmental protection, the government of the northwest provinces (districts) attaches great importance to the transformation of coal-fired boilers, and actively promotes the high efficiency combustion technology of pulverized coal. According to preliminary statistics, more than 30 coal producers in five provinces of Northwest China, many enterprises in Shanxi, Shaanxi and Gansu have invested in producing pulverized coal, which has made important contributions to clean coal production and environmental governance. According to incomplete statistics, in the second half of 2015, we purchased coal preparation equipment for pulverized coal production and coal powder increasing efficiency from Shanghai world bang, and all enterprises in Shanxi, Shaanxi, Gansu and other places.
For example, Gansu Coal Institute purchased Shanghai sebang LM220M coal mill system for coal production, the main supply of combustion pulverized coal boiler, coal grinding into coal, can fully remove impurities, and coal fine granularity, flammable, can greatly improve the combustion efficiency, saving in fuel consumption at the same time, is also relatively reduced the harmful gas and dust emissions, environmental protection through certain measures, can reach and exceed the national energy-saving emission reduction standards, has brought good economic and environmental benefits.
Another customer in Gansu use Shanghai sebang LM190M/N milling machine for the production of coal and water slag, a dual-purpose machine, the whole production line with advanced technology, reasonable design, and through the design verification Coal Design Institute, LM190M/N dual line production in Gansu area is nearly based on resources, scientific and rational water processing. The production of slag can be partial solid waste treatment and utilization, can achieve efficient use of coal.
The northwest region rich in coal resources processing into coal, not only ease the fire when the traditional way of coal combustion power plant caused by environmental pollution, but also for the northwest coal transformation and upgrading is of typical significance to achieve high economic efficiency, but also the northwest and the country power companies to promote a breakthrough in upgrading energy saving coal, current and future development space broad.
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