Highly effective coal combustion improver and preparation thereof

Abstract

The invention relates to the fuel additive technical field, in particular to fuel coal additives and a method for preparing the same. The invention discloses the high-efficiency fuel coal additives, which mainly comprises raising agent, combustion improver and sulfur retention smoke agent and also comprises nano silicon dioxide with a weight ratio between 0.5 and 10 percent. The high-efficiency fuel coal additives makes fuel coal in the high temperature state; the boiler steam rate is gradually increased; the furnace temperature is improved by 100 DEG; the boiler thermal efficiency is improved by over 15 percent; the coal-saving rate reaches 5 to 20 percent; the desulfurization is obvious and the desulfurization degree is as high as 40 to 70 percent; the decoking process is quick; the total discharge of clinker is reduced by about 26 percent, thereby the carbon content of furnace cinder is reduced; by addition of the fuel coal additives, metals on the boiler heating surface can not be eroded, thereby the function of protecting equipment is brought into play and the service life of the equipment is prolonged. Moreover, the high-efficiency fuel coal additives can greatly reduce the environmental pollution and the atmospheric greenhouse effect, and greatly reduce the energy consumption so as to obtain obvious economic benefit.

Description

technical field [0001] The invention relates to the technical field of fuel additives, in particular to a high-efficiency coal-burning additive and a preparation method thereof. Background technique [0002] my country is one of the few countries in the world where coal is the main energy source. At present, there are about 460,000 industrial boilers in China, of which 70% are small and medium-sized layer-fired boilers, about 160,000 various kilns, and coal-fired cooking stoves. In 2003, the national coal consumption was 1.67 billion tons, of which domestic coal consumption was 1.59 billion tons. In domestic coal consumption, 850 million tons of coal are used for electricity, 180 million tons of iron and steel, 170 million tons of building materials, 80 million tons of chemical industry, and 310 million tons of coal for domestic use and others. With the rapid growth of my country's economy in recent years, coal consumption is also increasing day by day. It is estimated that ...

AI Technical Summary

Problems solved by technology

[0003] In order to reduce the pollution problems caused by coal combustion and improve the combustion efficiency of coal, various coal-burning additives have appeared in recent years, such as coal-saving agents and combustion-supporting agents. They mainly use chemicals to achieve desulfurization and combustion-supporting purposes. But there are defects: the desulfurization rate is not high, generally lower than 40%; the effect of decoking and dust removal is not good; the increase rate of coal calorific value is not large, etc.