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Device and method for removing elemental mercury in active coke

A technology of active coke and elemental mercury, which is applied in chemical instruments and methods, separation methods, filter regeneration, etc., can solve the problems of difficult recycling, secondary pollution, etc., and achieve the effects of low cost, efficient removal, and simple device operation.

Inactive Publication Date: 2018-06-08
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Activated coke is difficult to recycle after adsorbing elemental mercury, and the adsorbed elemental mercury may cause secondary pollution

Method used

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  • Device and method for removing elemental mercury in active coke

Examples

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Comparison scheme
Effect test

Embodiment 1

[0024] A method for removing mercury from mercury-containing active coke, specifically comprising the following steps:

[0025] Fill the mercury-containing active coke into the active coke filler, adjust the gas output of the ozone generator to 1g / h, the generated gas enters the heat exchanger through the pipeline, heats the ozone gas to 100°C, blows it through the blower, and then enters it from the pipeline In the active coke filler, there is 1m in the active coke filler 3 The mercury content is 10μg / m 3 After 30 minutes, the active coke was taken out and washed with water, and the mercury removal rate of the active coke reached 99.3%.

Embodiment 2

[0027] A method for removing mercury from mercury-containing active coke, specifically comprising the following steps:

[0028] Fill the mercury-containing active coke into the active coke filler, adjust the gas output of the ozone generator to 2g / h, the generated gas enters the heat exchanger through the pipeline, heats the ozone gas to 100°C, blows it through the blower, and then enters it from the pipeline In the active coke filler, there is 1m in the active coke filler 3 The mercury content is 10μg / m 3 After 30 minutes, the active coke was taken out and washed with water, and the mercury removal rate of the active coke reached 99.7%.

Embodiment 3

[0030] A method for removing mercury from mercury-containing active coke, specifically comprising the following steps:

[0031] Fill the mercury-containing active coke into the active coke filler, adjust the gas output of the ozone generator to 3g / h, the generated gas enters the heat exchanger through the pipeline, heats the ozone gas to 100°C, blows it through the blower, and then enters it from the pipeline In the active coke filler, there is 1m in the active coke filler 3 The mercury content is 10μg / m 3 After 30 minutes, the active coke was taken out and washed with water, and the mercury removal rate of the active coke reached 99.8%.

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PUM

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Abstract

The invention discloses a device and method for removing elemental mercury in active coke. The device comprises an ozone generator, a heat exchanger, a blower and an active coke filler and the above parts are connected through pipes. The active coke filler is filled with mercury-containing active coke. Ozone produced by the ozone generator is heated by the heat exchanger, then is fed into the active coke filler through the blower and then undergoes a mercury removal reaction, and after the reaction, the active coke is taken out and is washed by water. The ozone as an oxidant oxidizes the elemental mercury. The device and method are simple, have high efficiency, solve the problem of treatment on elemental mercury in active coke, realize the oxidation of mercury, prevent secondary pollution,realize recovery and recycling of active coke and reduce a cost.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a treatment device and method for deactivating mercury by ozone oxidation. Background technique [0002] In the process of coal combustion, the discharge of heavy metal pollutants has caused great harm to human health and the environment. How to effectively control the discharge of heavy metal pollutants has become a new and frontier field in the prevention and control of combustion pollution. Mercury is one of the most volatile heavy metal elements in coal. Although the concentration of mercury in coal is very low, about 1 μg / g, due to the huge consumption of coal and the high toxicity of mercury, mercury pollutants are difficult to capture, and can accumulate in organisms and stay in the atmosphere for a long time. For many reasons, such as a year, the control of mercury emissions in the coal combustion process is receiving increasing attention. [0003] Coal...

Claims

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Application Information

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IPC IPC(8): B01J20/34B01J20/20
CPCB01J20/20B01J20/3416B01J20/3458B01J20/3475
Inventor 黄少斌郭子赫张永清张海红
Owner SOUTH CHINA UNIV OF TECH
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