Thermal power plant fire coal sulfur fixation composition method

Abstract

The invention discloses a thermal power plant fire coal sulfur fixation composition method. The composition comprises 30-50wt% of limestone, 10-20wt% of industrial salt, 10-20wt% of sodium carbonate, 10-20wt% of ammonium nitrate and 10-30wt% of a clinker burning aid, the sum of the weight proportions of the above components is 100%, the water content is less than 2%, and the content of calcium oxide in limestone is not lower than 60%. The method has the advantages of easy buying of the above raw materials in the market, saving of above 13% coal, and reduction of the sulfur dioxide discharge amount by above 90%.

Description

technical field [0001] The invention belongs to the technical field of sulfur fixation, in particular to a combination method for coal-fired sulfur fixation in a thermal power plant. Background technique [0002] With the rapid development of the national economy, the underground reserves of coal in my country also tend to decrease rapidly. Due to excessive mining and large-scale export of high-quality coal, the trend of reduction is particularly serious, while low-quality high-sulfur coal like stones remains Domestically, due to its low calorific value and serious pollution, it has brought serious difficulties to industrial production and people's lives, and at the same time caused serious harm to the atmospheric environment. From the perspective of development and strategy, the problems of environmental pollution and energy shortage have posed a serious threat to the survival and development of the people, and they must be resolved. [0003] There are many types of coal-fi...

AI Technical Summary

Problems solved by technology

The combined action of manganese ore and chemical admixture can reduce the ignition point of coal powder, increase the melting point of coal ash, and adjust the combustion atmosphere at high temperature to achieve the purpose of promoting the concentrated combustion of inferior coal; the joint action of calcium carbonate and chemical admixture, It reacts with the sulfur dioxide produced after coal combustion, and precipitates the sulfur substance in the coal slag, thereby reducing the sulfur dioxide discharged into the atmosphere; Therefore, a more ideal sulfur fixation method is needed, which can further reduce the ignition point of pulverized coal, improve the utilization efficiency of pulverized coal, save coal more, and further reduce the sulfur dioxide produced during coal combustion. Sulfur elements are deposited in coal cinders to reduce harmful gas emissions