Multifunctional general-purpose coal fines combustion test apparatus and method

A technology of pulverized coal combustion and test device, which is applied in the field of metallurgy to achieve the effect of stable and reliable operation

Inactive Publication Date: 2009-01-21
NORTHEASTERN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of testing the fuel combustion rate during the process of injecting different fuels and injecting fuel v...

Method used

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  • Multifunctional general-purpose coal fines combustion test apparatus and method
  • Multifunctional general-purpose coal fines combustion test apparatus and method
  • Multifunctional general-purpose coal fines combustion test apparatus and method

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Embodiment

[0061] The multifunctional universal pulverized coal combustion test device of the present invention is as figure 1 As shown, the multifunctional universal pulverized coal combustion test device includes an air supply system, a gas heating system, a pulverized coal injection system, a pulverized coal combustion system, and a dust collection system.

[0062] The gas heating system consists of a low-temperature gas heating furnace 12 and a high-temperature gas heating furnace 9, and the two furnace bodies are connected in series. Among them, the gas low-temperature heating furnace 12 has a built-in gas low-temperature heating pipeline 13 and a low-temperature heating element 14, and the gas high-temperature heating furnace 9 has a built-in gas high-temperature heating pipeline 10 and a high-temperature heating element 11. The heating element of the low-temperature heating furnace is made of iron-chromium-aluminum wire. The material of the heating element of the high-temperature ...

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Abstract

The invention relates to a multifunctional general purpose pulverized coal firing test device and a method thereof, which is characterized in that a regulating speed motor is connected with a spiral flood dragon shaft in a pulverized coal barrel, and the spiral flood dragon shaft in the pulverized coal barrel near the upper portion of the end cap of the regulating speed motor is opened with a feed inlet, and a high-pressure air current inlet is positively arranged above the other end of the spiral flood dragon shaft, and a pulverized coal outlet is positively arranged under the spiral flood dragon shaft. The total weight of a pulverized coal apron quantitive conveyor is totally acted on a weighing sensor through a suspended frame. The method comprises supplying wind for a gas heating system, starting the regulating speed motor when temperatures of a high-temperature heating furnace and a pulverized coal combustion furnace reach requirements, and spraying pulverized coal from the pulverized coal outlet to mix with high-temperature warm air to be burned in a combustion furnace pipe. A pulverized coal blowing system of the pulverized coal firing test device is stable and reliable to run, the fluctuation range of transport capacity is less than 5%, and the temperature of the pulverized coal combustion furnace can reach 1300 DEG C.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a multifunctional and universal pulverized coal combustion test device and method. Background technique [0002] The blast furnace coal injection ironmaking process has the advantages of saving coke, low production cost and high efficiency. However, different coal types and different coal injection methods will have different effects on blast furnace ironmaking production. Due to the large volume and complicated control system of the existing blast furnace pulverized coal injection equipment, it is difficult to use the production device to test the pulverized coal combustion status. [0003] Today's blast furnace ironmaking has higher and higher requirements for coal injection, how to effectively reduce the coke ratio and increase the amount of coal injection has become an important symbol to measure the level of blast furnace production technology. [0004] Ther...

Claims

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Application Information

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IPC IPC(8): G01N33/22G01N5/04C21B5/00C21B7/00
Inventor 董文献
Owner NORTHEASTERN UNIV
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