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

A catalytic burner and pulverized coal combustion technology, applied in the field of coal combustion and pulverized coal combustion, can solve the problems of not being able to be fully equipped with dust removal, desulfurization, and denitrification devices, low coal combustion efficiency, waste of coal resources, etc. Economic benefits and environmental protection benefits, the effect of reducing waste of coal resources and reducing pollutant emissions

Inactive Publication Date: 2007-10-03
窦陆军 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Example 1

[0038] The principle diagram of the method for catalytic combustion of pulverized coal in this embodiment is shown in Fig. 1.

[0039] The method for catalytic combustion of pulverized coal in this embodiment is implemented in a boiler. A combustion nozzle 1 is installed at one end of the combustion chamber 2 of the boiler, and a honeycomb guide combustion plate 3 is installed in the middle of the combustion chamber 2. There are honeycomb guide holes 5, and an igniter 6 is installed between the burner nozzle 1 and the honeycomb guide combustion plate 3.

[0040] The pulverized coal combustion catalyst 10 is composed of AL2O3 85%, MnO2 3%, CuO3%, TiO2 2%, Nio2 3%, and mixed rare earth 5% by weight. The above ingredients are mixed with twice deionized water and then passed through a ball mill. After 48-72 hours, it becomes gelatinous. Add deionized water to dilute and make the slurry. Put the honeycomb guide combustion plate 3 into the slurry to soak, then take it...

Example Embodiment

[0042] Example 2

[0043] The principle of the method for catalytic combustion of pulverized coal described in this embodiment is shown in Fig. 2.

[0044] The catalytic combustion method of pulverized coal described in this embodiment is implemented in a general industrial kiln. Three combustion nozzles 1 are arranged on the side of the combustion chamber 2 of the industrial kiln. An igniter 6 and a honeycomb guide are installed in front of the combustion nozzle 1. Flow combustion plate 3. A movable nozzle core 9 driven by a motor is installed in the cavity of the combustion nozzle 1. The pulverized coal combustion catalyst 10 is deposited on the surface of the honeycomb-shaped flow guide combustion plate 3 according to the method in Example 1.

[0045] The coal is pulverized into pulverized coal of about 200 meshes, mixed with air to form gaseous fuel, and sent to the combustion chamber 2 through the combustion nozzle 1 for combustion. The working process is basically the same as...

Example Embodiment

[0046] Example 3

[0047] The schematic diagram of the pulverized coal catalytic combustion method and the structural schematic diagram of the pulverized coal catalytic combustor according to this embodiment are shown in Fig. 3, and the schematic structural diagram of the honeycomb-shaped baffle combustion plate 3 is shown in Figs. 4 and 5.

[0048] The catalytic combustion method of pulverized coal described in this embodiment is implemented in a pulverized coal catalytic combustor. The pulverized coal catalytic burner is composed of a combustion nozzle 1, a combustion chamber 2, and a honeycomb guide combustion plate 3, etc. The rear part of the combustion chamber 2 is a cone and the front part is a cylinder. The combustion nozzle 1 is installed in the middle of the rear part of the combustion chamber 2. The inner wall of the combustion chamber 2 is provided with a refractory layer 4 made of refractory material. A honeycomb guide combustion plate 3 is installed in the middle of ...

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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...

Claims

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Application Information

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IPC IPC(8): F24C13/00B01J23/889B01J21/04B01J32/00B01J37/04
Inventor 窦陆军王东明
Owner 窦陆军
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