Flue gas purifying and absorbing tower and treatment method thereof

A flue gas purification and absorption tower technology, which is applied in chemical instruments and methods, separation methods, and dispersed particle separation, can solve problems such as single solution and no applicable conditions, and achieve simple design, cost-saving flue gas purification, and clean Effect of efficient flue gas cleaning process

Inactive Publication Date: 2017-12-15
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the scheme of the above-mentioned patent does not point out specific applicable conditions, and the scheme is single

Method used

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  • Flue gas purifying and absorbing tower and treatment method thereof
  • Flue gas purifying and absorbing tower and treatment method thereof
  • Flue gas purifying and absorbing tower and treatment method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0066] This embodiment provides a flue gas purification absorption tower and a treatment method thereof. The adsorbent used in the flue gas purification absorption tower is activated carbon. Such as figure 1 As shown, the tower body size of the flue gas absorption tower is 2m long, 4m wide, and 8m high, and the flue gas volume that can be treated is 6400Nm 3 / h. In the middle of the tower is an adsorbent layer 4 with a thickness of 2.0m, and the flue gas channels on both sides are each 1m wide. The lower part of the tower body is provided with an air inlet 1, the upper part of the opposite side of the tower body is provided with an air outlet port 2, and an activated carbon buffer bin 3 is arranged above the tower body, and the material inlet 8 and the material outlet 9 for activated carbon to enter and exit are respectively arranged with rotary discharge valves 6 And the air locker 7, the air locker 7 is also arranged above the adsorbent buffer storehouse 3. The ammonia in...

Embodiment 2

[0074] This embodiment provides a flue gas purification absorption tower and a treatment method thereof. The adsorbent used in the flue gas purification absorption tower is activated carbon. Such as figure 2 As shown, the tower body structure, size and flue gas processing capacity of the flue gas absorption tower refer to Example 1, the difference is that the flue gas inlet 1 and the gas outlet 2 are arranged on the same side of the tower body, and after the flue gas enters the tower, , the flue gas passes through the activated carbon layer 4 twice through a flue gas baffle to complete the desulfurization process and the denitrification process respectively. When spraying ammonia, a large amount of ammonia gas enters through the ammonia injection grid at ammonia injection point 5 in the flue, and a small amount (accounting for 1 / 4 of the total ammonia injection volume) of powdered ammonium bicarbonate passes through the pipe at ammonia injection point 5 in the adsorbent buffe...

Embodiment 3

[0078] This embodiment provides a flue gas purification absorption tower and a treatment method thereof. The adsorbent used in the flue gas purification absorption tower is activated carbon. Such as image 3 As shown, the size of the flue gas absorption tower is 6m long, 8m wide, and 20m high, and the flue gas volume that can be treated is 96000Nm 3 / h. Two activated carbon layers 4 are arranged in the tower body, each of which is 2m thick, the middle is an air inlet 1 for flue gas, and the width is 2m, and the two sides are gas outlets 2, each with a width of 1m. A rotary unloading valve 6 and an air locker 7 are respectively arranged at the material inlet 8 and the material outlet 9 for activated carbon to enter and exit, and an air locker 7 is also arranged above the adsorbent buffer bin 3 . Ammonia injection point 5 is set in the flue at the flue gas inlet 1 and in the adsorbent buffer chamber 3. When injecting ammonia, a large amount of ammonia enters through the ammonia...

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Abstract

The invention provides a flue gas purifying and absorbing tower and a treatment method thereof. The absorbing tower comprises a tower body, an air inlet, an air outlet, an adsorbent buffer bin, an adsorbent layer, ammonia spraying points, a material inlet and a material outlet, wherein the adsorbent buffer bin is arranged above the absorbing tower and is connected with the tower body through the material inlet; a flue is formed in the tower body and is an in-tower space separated by the adsorbent layer; the ammonia spraying points are arranged in the adsorbent buffer bin and on the flue of the tower body. The treatment method comprises the following steps: spraying ammonia into the ammonia spraying point in the adsorbent buffer bin so as to introduce an adsorbent into the adsorbent layer; spraying ammonia into the ammonia spraying point on the flue of the tower body so as to introduce to-be-treated flue gas into the absorbing tower from the air inlet, and after the to-be-treated flue gas flows through the flue and the adsorbent layer, discharging the to-be-treated flue gas out from the air outlet; and after the adsorption of the adsorbent is finished, discharging the adsorbent. According to the flue gas purifying and absorbing tower and the treatment method, an ammonia spraying process of the absorbing tower is improved, so that the denitration efficiency is guaranteed, the use amount of ammonia gas and the escaping of ammonia are reduced, and the clean and efficient flue gas purifying process is realized.

Description

technical field [0001] The invention relates to the technical field of flue gas purification equipment, in particular to a flue gas purification absorption tower using an ammonia injection process and a treatment method thereof. Background technique [0002] The flue gas purification process of activated carbon method has been successfully applied to the flue gas purification of coal-fired power plants and sintering machine flue gas purification of large steel companies, such as Japan's Isoko Power Plant and Nippon Steel, South Korea's Pohang Iron and Steel, Hyundai Steel, and China Taiyuan Iron and Steel Co., Ltd. In the 1980s, my country started the research and development of activated carbon flue gas purification technology. The research and development and engineering construction units mainly include Shanghai Kesulphur, Coal Research Institute, and China Metallurgical Changtian. In recent years, more and more iron and steel enterprises have chosen the activated carbon ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/04B01D53/14
CPCB01D53/0415B01D53/14
Inventor 朱廷钰李玉然张帅王斌
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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