Catalyzed coal powder burning process, coal powder catalyzing burner and coal powder burning catalyst

Abstract

The present invention relates to coal powder catalytically burning process, coal powder catalyzing burner and coal powder burning catalyst. The coal powder catalyzing burner includes one burner, one burning nozzle and one beehive guiding burning plate with coal powder burning catalyst. The mixture of coal powder and air is sprayed through the nozzle into the burner and burnt under the action of the coal powder burning catalyst. The coal powder burning catalyst consists of Al2O3 80-85 wt%, MnO2 1-8 wt%, CuO 1-3 wt%, TiO2 1-3 wt%, NiO2 1-3 wt%, and mixed RE 1-5 wt%. The present invention has raised coal powder burning rate and reduced environmental pollution.

Description

technical field [0001] The invention relates to a pulverized coal catalytic combustion method, a pulverized coal catalytic burner and a pulverized coal combustion catalyst, and belongs to the technical field of coal combustion, more specifically, belongs to the technical field of pulverized coal combustion. technical background [0002] Coal is an important energy raw material, which is widely used in industry and civil use. With the depletion of oil and natural gas resources in the world, because the reserves of coal are greater than those of oil and natural gas, the position of coal in energy strategy is becoming more and more important. There are two main disadvantages of coal combustion, one is that the efficiency of coal combustion is not high, resulting in waste of coal resources; the other is insufficient coal combustion, resulting in environmental pollution. At present, the way of coal combustion with high efficiency is the pulverized coal combustion technology adop...

AI Technical Summary

Problems solved by technology

There are two main disadvantages of coal combustion, one is that the efficiency of coal combustion is not high, resulting in waste of coal resources; the other is insufficient coal combustion, resulting in environmental pollution

At present, the method with higher coal combustion efficiency is the pulverized coal combustion technology adopted by large power plant boilers, but it still can only achieve a combustion rate of 75%, resulting in waste of coal resources

At the same time, this combustion method is not suitable for use on small and medium-sized boilers, general industrial furnaces, and civil furnaces. A large number of small and medium-sized boilers, general industrial furnaces and civil furnaces burn coal with low efficiency, resulting in more waste of coal resources.

At the same time, due to insufficient coal combustion, a large amount of CO, SO2, NOx and dust are produced, polluting the environment

Large-scale boilers can be equipped with some dust removal, desulfurization, denitrification and other devices. For a large number of small and medium-sized boilers, general industrial kilns, and civil furnaces, due to economic and technical reasons, it is impossible to equip them all with dust removal, desulfurization, and denitrification devices, resulting in a large number of environmental pollution

In order to solve the problem of insufficient coal combustion, some methods of adding catalysts and accelerators to coal are used in the prior art, but this method is uneconomical. For coal used in large quantities, even if a small amount of catalyst is added, Its total consumption is also a huge amount. It needs a lot of manpower and material resources to evenly add catalysts to coal, resulting in increased costs. Adding catalysts and accelerators at the same time sometimes has side effects, causing coal slagging and making it difficult to discharge slagging, etc. shortcoming

Images