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Regenerative device and method for desulfurized and denitrified active coke

A regeneration device, nitric acid active coke technology, applied in separation methods, filter regeneration, chemical instruments and methods, etc., to achieve high device efficiency, avoid local overheating, and increase heat transfer intensity

Active Publication Date: 2013-12-04
SHANGHAI CLEAR ENVIRONMENTAL PROTECTION SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the deficiencies in the above-mentioned prior art, the present invention proposes a device that can further solve the problems existing in the existing equipment, especially in the regeneration process to achieve a more reasonable use of energy, so that the desulfurization and denitrification performance of the activated coke after regeneration can be further improved. Desulfurization and denitrification active coke regeneration device and method

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  • Regenerative device and method for desulfurized and denitrified active coke
  • Regenerative device and method for desulfurized and denitrified active coke

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Embodiment 1

[0044] figure 1 Example 1 Schematic diagram of the structure of a desulfurization and denitrification active coke regeneration device. Such as figure 1 As shown, a desulfurization and denitrification active coke regeneration device proposed in this embodiment includes a regeneration reactor, and the regeneration reactor consists of an inlet air lock valve 1, a feed bin 2, a heating bin 3, and a regeneration bin 11. The pre-cooling bin 5, the cooling bin 8, the discharge bin 9 and the outlet air lock valve 10 are sequentially connected, and a heating heat exchanger assembly 303 for heating the heating bin 3 is arranged in the heating bin 3. In the pre-cooling bin 5 is provided with a pre-cooling heat exchanger assembly 503 for cooling the pre-cooling bin 5, and a cooling heat exchanger assembly 803 for cooling the cooling bin 8 is arranged in the cooling bin 8. Between the pre-cooling bin 5 and the cooling Between the bins 8, there is also a nitrogen loading bin 7 for introdu...

Embodiment 2

[0062] Figure 11 It is a schematic structural diagram of the desulfurization and denitrification active coke regeneration device in Example 2. Such as Figure 11 As shown, the difference between the present embodiment and the first embodiment is that the desulfurization and denitrification active coke regeneration device of the present embodiment adopts the hot blast stove as the desorption heat source, that is, the heating device 4 of the present embodiment adopts the hot blast stove instead of the one in the first embodiment Electric heaters. In this embodiment, the heating device is adjusted, and a part of the cooling air is used as the combustion-supporting air of the hot blast stove to generate high-temperature hot air, which is mixed with the heat exchange medium from the outlet of the cooling gas. Heating, reaching the desorption temperature for circulation, and the heat exchange medium is flue gas with an oxygen content below 3%. For other specific structures and r...

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Abstract

The invention discloses a regenerative device and method for desulfurized and denitrified active coke. The regenerative device comprises a regenerative reactor, wherein the regenerative reactor is composed by the connection of an inlet blocking valve, a feeding bin, a heating bin, a regenerative bin, a precooling bin, a cooling bin, a discharging bin, and an outlet blocking valve in sequence; a heating heat exchanger component is arranged in the heating bin; a precooling heat exchanger component is arranged in the precooling bin; a cooling heat exchanger component is arranged in the cooling bin; a nitrogen carrying bin for inletting ammonia nitrogen gas to improve the desulfurization and denitrification performances of regenerated active coke during regeneration process is arranged between the precooling bin and the cooling bin. The regenerative method adopts the regenerative device to conduct the regeneration of the active coke. According to the invention, more reasonable utilization of energy can be realized in the regeneration process to allow the desulfurization and denitrification performance of the regenerated active coke to obtain further improvement; on-line modification can be conducted on the active coke through the nitrogen carrying bin to keep high desulfurization and denitrification performance of the active coke.

Description

technical field [0001] The invention relates to the technical field of active coke regeneration, in particular to a desulfurization and denitrification active coke regeneration device and method. Background technique [0002] At present, in the flue gas desulfurization technology of industrial furnaces such as power plant boilers and iron and steel smelting, the activated coke desulfurization combined purification process has been applied at home and abroad for its advantages of water saving, integrated purification, no secondary pollution, and recovery of sulfur resources. Since activated coke loses its activity after adsorption desulfurization and denitrification, it must be regenerated to restore activity and then recycled, so active coke regeneration is an essential section. Active coke regeneration is divided into water washing regeneration and heating regeneration. Since the by-product of water washing regeneration is dilute sulfuric acid, which is inconvenient to use ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/34B01J20/20B01D53/02
Inventor 傅月梅郑阳潘敏辛昌霞刘强李卫卫
Owner SHANGHAI CLEAR ENVIRONMENTAL PROTECTION SCI & TECH
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