Energy-saving and high efficiency fuel coal combustion improver and preparation method thereof

Abstract

The invention discloses an energy-saving and high efficiency fuel coal combustion improver and a preparation method thereof. The combustion improver comprises the following components by weight percentage: 40-60% of zinc oxide, 40-60% of manganese dioxide, preferably 50% of zinc oxide and 50% of manganese dioxide, wherein the manganese dioxide can be prepared by: weighing KMnO4 and MnC12.4H2O according to a weight ratio of 1:1, and fully grinding the materials in a container under room temperature for 20-50min to carry out solid phase reaction. The preparation method of the energy-saving and high efficiency fuel coal combustion improver includes the steps of: a. weighing the raw materials according to the following weight percentage: 40-60% of zinc oxide and 40-60% of manganese dioxide; b. grinding; c. dipping and drying; and d. roasting. The combustion improver provided by the invention reduces corrosion to boilers, improves the service life of boilers, significantly raises the flame temperature, improves the combustion activity and ignition performance of coal, improves the speed of ignition speed and combustion speed of coal, and has significant energy saving and environmental protection effects.

Description

technical field [0001] The invention relates to a combustion accelerant containing similar wulcanite-type composite oxides, in particular to an energy-saving and high-efficiency coal-burning combustion accelerant. Background technique [0002] Most domestic coal-fired combustion aid products adopt the technical principle of oxygen-assisted combustion, and sodium chloride, potassium permanganate, sodium nitrate, barium nitrate, calcium oxide, etc. are usually used as coal combustion aid raw materials. The patent document discloses a high-efficiency smoke-removing coal-saving combustion-supporting agent, with 1-96% sodium chloride, 1-96% urea, 1-96% potassium permanganate, 1-96% potassium carbonate and 1 1%% sodium carbonate composition; application number is that the patent literature of 97105154.2 discloses a kind of coal combustion accelerant, with boron mud, limestone, bauxite, sodium carbonate, sodium chloride, plant debris, calcium carbide, manganese dioxide etc. as...

AI Technical Summary

Problems solved by technology

Among these raw materials, although sodium chloride is neutral, there are many sodium ions and chloride ions in it. Long-term use will corrode metals and reduce the service life of boilers; nitrates are dangerous chemicals that are easily It is flammable and explosive, and when nitrate is used as a combustion aid for coal, it is easy to produce toxic nitrogen oxides and pollute the air

In addition, these coal-use combustion accelerants are not only too expensive to add (the addition ratio is 2-3%), but also only suitable for small boilers (such as ordinary boilers below 35 tons), and have no obvious energy-saving effect on large and medium-sized industrial boilers

The existing coal combustion enhancers are difficult to achieve clean combustion of coal, fail to achieve good results in energy saving and environmental protection, and cannot meet the current national clean coal technology requirements