Constant-power electrothermal regeneration method and device for granular active carbon

A technology of granular activated carbon and constant power, which is applied in separation methods, filter regeneration, chemical instruments and methods, etc., can solve the problems of unstable electric heating regeneration power, reduced electric heating regeneration efficiency, low power, etc. The effect of stabilizing problems and improving regeneration efficiency

Inactive Publication Date: 2021-12-03
ZHEJIANG QIZHENG ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Generally, a constant current is used for electrothermal regeneration; however, since the resistivity of activated carbon changes with temperature, in the process of using a constant current to regenerate activated carbon, the electrothermal regeneration power will be unstable due to the change in the resistance of activated carbon, and the higher the temperature The lower the power, the lower the overall electrothermal regeneration efficiency

Method used

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  • Constant-power electrothermal regeneration method and device for granular active carbon
  • Constant-power electrothermal regeneration method and device for granular active carbon
  • Constant-power electrothermal regeneration method and device for granular active carbon

Examples

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Embodiment 1

[0024] Such as figure 1 and 2 As shown, an electrothermal regeneration device with constant power of saturated activated carbon includes a first electrode plate 3, a second electrode plate 4, a cylinder 5, a temperature sensor 6, a display and a power supply box. The base and the track plate are made of high-temperature-resistant materials (specifically, they can be used continuously in an environment of 900°C). The first electrode plate 3 and two track plates are fixed on the base. The first electrode plate 3 is located at the same end of the two track plates. The second electrode plate 4 is slidingly connected with the two track plates, and is located between the two track plates. The base, the first electrode plate 3, the second electrode plate 4 and two track plates form a regenerative chamber with an open top and closed other positions. By sliding and adjusting the position of the second electrode plate 4, the length of the regeneration chamber can be dynamically adju...

Embodiment 2

[0033] The difference between this embodiment and Embodiment 1 is that in the process of electrothermal regeneration, the magnitude of the input voltage U is detected in real time, and the electrothermal regeneration power P=UI is calculated; where, I is the input current; when the electrothermal regeneration power P increases , the cylinder drives the second electrode plate 4 to move close to the first electrode plate 3, reducing the overall resistance of the granular activated carbon; when the electrothermal regeneration power P decreases, the cylinder drives the second electrode plate 4 to move away from the first electrode plate 3, increasing the particle size The resistance of the activated carbon as a whole; so that the electric heating regeneration power P remains constant.

[0034] At the same time, the display shows the input current and input voltage of electrothermal regeneration in real time.

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Abstract

The invention discloses a constant-power electrothermal regeneration method and device for granular activated carbon. The electrothermal regeneration method comprises the following steps: 1, filling regenerated granular active carbon between two electrode plates in a regeneration chamber; enabling the distance between the two electrode plates to be adjustable, and connecting the two electrode plates with a power supply; and along with the adjustment of the distance between the two electrode plates, enabling the granular activated carbon to flow between the two electrode plates, so as to change the overall length and sectional area of the granular activated carbon; and 2, in the resistivity process of the granular active carbon, adjusting the distance between the two electrode plates to counteract the influence caused by the resistivity change, so that the electrothermal regeneration power P is kept constant until the electrothermal regeneration of the granular active carbon is completed. The problem of electric heating regeneration power change caused by resistivity change of activated carbon in the regeneration process is solved, the electric heating regeneration power can be kept at the optimal rated power, and compared with the prior art, the regeneration efficiency is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of activated carbon regeneration, and in particular relates to an electrothermal regeneration method and device for constant power of granular activated carbon. [0002] technical background [0003] Activated carbon is an excellent adsorption material with developed internal pore structure, high mechanical strength, large specific surface area, stable chemical properties and strong adsorption capacity. It is widely used in various fields such as chemical industry, metallurgy, transportation, agriculture, medicine and health, military and environmental protection. Generally, a constant current is used for electrothermal regeneration; however, since the resistivity of activated carbon changes with temperature, in the process of using a constant current to regenerate activated carbon, the electrothermal regeneration power will be unstable due to the change in the resistance of activated carbon, and the higher th...

Claims

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Application Information

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IPC IPC(8): B01J20/34B01J20/20
CPCB01J20/3416B01J20/3441
Inventor 聂欣
Owner ZHEJIANG QIZHENG ENVIRONMENTAL PROTECTION TECH CO LTD
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