Ammonia regeneration method and device for activated coke

A technology of active coke regeneration and regeneration device, which is applied in the field of flue gas purification, can solve the problems of high energy consumption and carbon ablation, and achieve the effects of reducing the degree of ablation, inhibiting the oxidation of surface oxygen, and reducing energy consumption

Active Publication Date: 2015-02-25
CHINA HUADIAN ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide an activated coke ammonia regeneration method and device, which can effectively solve the problems existing in the prior art, especially the active coke regeneration process The energy consumption required in the process is large and the carbon ablation is serious.

Method used

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  • Ammonia regeneration method and device for activated coke
  • Ammonia regeneration method and device for activated coke
  • Ammonia regeneration method and device for activated coke

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Embodiment 1

[0033] Embodiment 1 of the present invention: a kind of ammonia regeneration method of active coke, comprises the following steps:

[0034] S1, the purge gas with an ammonia content of 5% heated to 300°C heats the active coke for a regeneration reaction, and the reaction time is 80 minutes;

[0035] S2, the reacted active coke flows to the II area of ​​the active coke regeneration tower, and the regeneration gas generated by the reaction is extracted and flows to the flue along with the purge gas;

[0036] S3, measuring NH in the purge gas 3 content and add NH according to the measurement results 3 , so that the ammonia content in the purge gas is 5%;

[0037] S4, the purge gas enters zone II of the active coke regeneration tower to cool the fully regenerated active coke;

[0038] S5, extracting the purge gas from Zone II of the active coke regeneration tower for heating and then injecting it into Zone I of the active coke regeneration tower, and turning to S1.

[0039] St...

Embodiment 2

[0049] Embodiment 2: a kind of ammonia regeneration method of active coke, comprises the following steps:

[0050] S1, the purge gas with an ammonia content of 10% heated to 350°C heats the active coke for a regeneration reaction, and the reaction time is 90 minutes;

[0051] S2, the reacted active coke flows to the II area of ​​the active coke regeneration tower, and the regeneration gas generated by the reaction is extracted and flows to the flue along with the purge gas;

[0052] S3, measuring NH in the purge gas 3 content and add NH according to the measurement results 3 , so that the ammonia content in the purge gas is 10%;

[0053] S4, the purge gas enters zone II of the active coke regeneration tower to cool the fully regenerated active coke;

[0054] S5, extracting the purge gas from Zone II of the active coke regeneration tower for heating and then injecting it into Zone I of the active coke regeneration tower, and turning to S1.

[0055] Step S2 also includes: au...

Embodiment 3

[0058] Embodiment 3: a kind of ammonia regeneration method of active coke, comprises the following steps:

[0059] S1, the purge gas with an ammonia content of 5% heated to 300°C heats the active coke for a regeneration reaction, and the reaction time is 80 minutes;

[0060] S2, the reacted active coke flows to the II area of ​​the active coke regeneration tower, and the regeneration gas generated by the reaction is extracted and flows to the flue along with the purge gas;

[0061] S3, measuring NH in the purge gas 3 content and add NH according to the measurement results 3 , so that the ammonia content in the purge gas is 5%;

[0062] S4, the purge gas enters zone II of the active coke regeneration tower to cool the fully regenerated active coke;

[0063] S5, extracting the purge gas from Zone II of the active coke regeneration tower for heating and then injecting it into Zone I of the active coke regeneration tower, and turning to S1.

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Abstract

The invention discloses an ammonia regeneration method and an ammonia regeneration device for activated coke. The device comprises an activated coke regeneration tower 1, a flue 2, an electric heater 3, an NH3 measurement device 4, an NH3 spraying device 5, a computer control end 11 and a fan 12, wherein a baffle plate is arranged in the activated coke regeneration tower 1 and divides the activated coke regeneration tower 1 into a regeneration heating reaction region I and a regeneration cooling region II; the electric heater 3 and the NH3 measurement device 4 are respectively arranged on the flue 2 between the region I and the region II of the activated coke regeneration tower 1; the NH3 spraying device 5 is arranged on the flue 2 between the NH3 measurement device 4 and the region II; the fan 12 is arranged on the flue 2 between the NH3 spraying device 5 and the region II; and the NH3 measurement device 4, the NH3 spraying device 5 and the fan 12 are respectively connected with the computer control end 11. 1 to 10 percent of ammonia is added into the sweep gas, so that the energy consumption is reduced, and the utilization efficiency of the activated coke is improved.

Description

technical field [0001] The invention relates to an ammonia regeneration method and device for active coke, belonging to the technical field of flue gas purification. Background technique [0002] The combined moving bed active coke removal process was jointly developed by Bergbau Forschung (BF) in Germany and Mitsui Mining (MMC) in Japan, and was later acquired by Masule Environmental Technology (MET) in the United States to form the MET-Mitsui-BF technology. At present, this technology has been applied to various types of boilers in many power stations. Among them, the regeneration of active coke is one of the essential processes in the combined removal technology, and the degree of regeneration directly affects the subsequent desulfurization and denitrification capabilities of active coke. The current active coke regeneration process generally adopts the method of thermal regeneration, and additional separation and recycling devices of the regenerator are required. [00...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/96B01D53/76B01D53/50B01D53/14
Inventor 苏军划李超李建浏陶爱平胡永锋沈煜晖
Owner CHINA HUADIAN ENG
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