Activation regeneration treatment process for semi-coke used for industrial flue gas dry desulfurization

A technology for dry desulfurization and industrial flue gas, which is applied in gas treatment, petroleum industry, filter regeneration, etc., and can solve the problems of poor semi-coke flue gas treatment effect and expensive activated carbon fiber

Inactive Publication Date: 2019-09-13
PINGXIANG HUAXING ENVIRONMENTAL PROTECTION ENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the current situation that activated carbon and activated carbon fiber are expensive and not suitable for a wide range of flue gas adsorption materials and semi-coke flue gas treatment effects are not good, the present invention provides a semi-cok...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Put a certain amount of semi-coke samples into the tube furnace, heat and keep it warm to 400°C, so that the closed holes inside the semi-coke are completely opened, and then raise the temperature in the tube furnace to 800°C, and then the water generated by the steam generator Water vapor is passed into the bed of the heated sample at a flow rate of 0.45L / min, and the water vapor reacts with the carbon inside the semi-coke for a certain period of 5 hours. After the activation is completed, the sample is rinsed with distilled water and dried to obtain Activated semi-coke finished product 1.

Embodiment 2

[0020] Weigh a certain amount of semi-coke and a certain amount of nitric acid solution with a concentration of 30%, wherein the volume ratio of nitric acid solution to semi-coke is 2:1, put them into a beaker for constant temperature water bath heating, stir for 6 hours to activate, and activate the semi-coke Suction filtration, washing until pH = 7, then oven-dried and dried to obtain activated semi-coke finished product 2.

Embodiment 3

[0022] Weigh a certain amount of semi-coke and a certain amount of potassium hydroxide, wherein the mass ratio of semi-coke to potassium hydroxide is 2:1, mix them evenly, put them into a tube furnace, and use a temperature controller to control the temperature of the tube furnace at 5 After heating up to 800°C at a heating rate of ℃ / min, calcining for 2 hours, air cooling, washing with distilled water and drying, the activated semi-coke finished product 3 is obtained.

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Abstract

The invention provides an activation regeneration treatment process for semi-coke used for industrial flue gas dry desulfurization. The activation regeneration treatment process comprises the semi-coke. The semi-coke is successively subjected to water vapor activation, nitric acid activation and potassium hydroxide activation, so a semi-coke activation product with good sulfur dioxide adsorption performance is obtained; and the semi-coke activation product reaches the standards of flue gas adsorption, has low price, is applicable to large-range flue gas treatment, and has high environmental friendliness and economic benefits.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to an activation regeneration treatment process for semi-coke used in industrial flue gas dry desulfurization. Background technique [0002] Sulfur dioxide and nitrogen monoxide in coal-burning flue gas are the main air pollutants and the main cause of acid rain. Therefore, the control of their emissions has become the focus of my country's environmental protection work. Among many flue gas desulfurization and denitrification technologies, wet desulfurization and denitrification technology has the problem of secondary pollution due to its low desulfurization and denitrification efficiency; dry desulfurization and denitrification technology has no secondary pollution, resources can be recycled, catalysts can be recycled, etc. Advantages, gradually become the trend of flue gas purification technology development. The electron beam method and pulse spot halo method in dry desul...

Claims

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Application Information

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IPC IPC(8): B01J20/34B01J20/20B01D53/02
CPCB01D53/02B01D2257/302B01D2258/0283B01J20/3416B01J20/3466B01J20/3475
Inventor 李波侯建国李凯王学谦王郎郎李婵宋亚波
Owner PINGXIANG HUAXING ENVIRONMENTAL PROTECTION ENG TECH CO LTD
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