Device for preparing light calcined magnesia and collecting carbon dioxide

A technology of lightly burning magnesium oxide and carbon dioxide, which is applied in the fields of combined devices, chemical instruments and methods, inorganic chemistry, etc.

Pending Publication Date: 2020-10-27
辽宁圣世资源环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at proposing a kind of preparation of light-burned magnesia and CO 2

Method used

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  • Device for preparing light calcined magnesia and collecting carbon dioxide
  • Device for preparing light calcined magnesia and collecting carbon dioxide
  • Device for preparing light calcined magnesia and collecting carbon dioxide

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Such as figure 1 At any time, 1.12t of wet magnesite material after flotation is put into the flash dryer 2 through the feeder 1 per hour. h. Pass the dried magnesite powder into the first-level preheating cyclone device 3, the second-level preheating cyclone device 5, and the third-level preheating cyclone device 6 successively for preheating, and after the first-level preheating cyclone device 3, the magnesite The temperature of the magnesite powder is preheated to 150°C, the temperature of the magnesite powder is preheated to 420°C after the second stage preheating cyclone device 5, and the temperature of the magnesite powder is preheated after the third stage preheating cyclone device 6 When heated to 550°C, the pyrolysis temperature of magnesite is 400-500°C. When the magnesite is preheated by the preheating device, 30% of the input amount of magnesite has been decomposed, and the remaining 70% is calcined by jet pulse entrained flow bed The furnace decomposes. ...

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Abstract

The invention relates to light calcined magnesia production, in particular to a device for preparing light calcined magnesia and collecting carbon dioxide. A feeding machine of the device is connectedwith a flash dryer, the flash dryer is respectively communicated with a multi-stage preheating cyclone device and a bag-type dust collector through pipelines, and the multi-stage preheating cyclone device is sequentially connected with a jet pulse type entrained-flow bed calcining furnace and a multi-stage recovery cyclone device; a gas circuit of the multi-stage recovery cyclone device is communicated with the multi-stage preheating cyclone device; a material path of the multi-stage recovery cyclone device is connected with the transition material bin, the transition material bin is connected with the gas-material mixing chamber, the bag-type dust collector is connected with the dehumidifying device, carbon dioxide gas enters the heat accumulating type hot blast stove through the three-fluid heat exchanger, and the three-fluid heat exchanger is communicated with the heat accumulating type hot blast stove and is connected with the jet flow pulse type entrained-flow bed calcining furnace through the temperature adjusting chamber. Waste heat of generated CO2 gas and combustion flue gas is utilized reasonably, heat is provided for a preheating and drying device, the CO2 gas and combustion air, and energy consumption is greatly reduced.

Description

technical field [0001] The invention relates to the field of production technology of light-burned magnesia, in particular to a method for preparing light-burned magnesia and CO 2 collected device. Background technique [0002] Magnesite is an important strategic resource in my country. my country has abundant reserves of magnesite resources, ranking second in the world. And it has many advantages such as dense reserves, many large deposits, shallow burial, easy open-pit mining, high grade, and high industrial utilization value. Generally speaking, magnesite has played a great role in the production of various industries in our country. [0003] At present, my country mainly uses magnesite calcination method to produce magnesium oxide. Light-burned magnesia is magnesia formed by calcination of magnesite at 700-1000°C. The traditional calcination method is to use the flue gas generated by fuel combustion to calcine magnesite. During the production process, a large amount...

Claims

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Application Information

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IPC IPC(8): C04B2/10C01B32/50B01D50/00C04B2/12F27B15/10F27B15/14F27D17/00
CPCC04B2/102C04B2/108C04B2/106C01B32/50C04B2/12F27B15/10F27B15/14F27D17/004F27D2017/007B01D50/20Y02P10/25Y02P20/129Y02P20/141
Inventor 董辉王德喜张继宇赵亮
Owner 辽宁圣世资源环境科技有限公司
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