Movable flue gas deacidification and desulfurization device and use method thereof

A desulfurization device and mobile technology, applied in separation methods, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of easy hardening, affecting the service life of the device, and exceeding the standard of flue gas emissions, so as to improve economic benefits and increase stability. The effect of prolonging the practical life

Pending Publication Date: 2021-07-23
瀚蓝(厦门)固废处理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large fineness and particle size of the lime and the easy compaction during the transportation process, the lime utilization rate is low during the flue gas deacidification process, the deacidification efficiency is low, and the amount of residual lime in the fly ash produced by deacidification is large and the amount of fly ash produced is large.
[0003] In addition, for the flue gas produced after garbage incineration, the industry has studied the use of a fixed baking soda injection system to purify it. During the treatment process of the reaction tower, baking soda needs to be input, and the acidity in the waste gas is removed through the chemical reaction between baking soda and the waste gas. The spraying angle and height of the baking soda spraying device are fixed, so that the exhaust gas cannot be processed in time when the spraying device fails, and the smoke emission exceeds the standard; in addition, most of the fixed spraying devices are exposed, and it is easy for workers When walking back and forth or moving the device, it will cause damage to the device, thus affecting the service life of the device

Method used

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  • Movable flue gas deacidification and desulfurization device and use method thereof

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Embodiment 1

[0027] In order to make the object, technical solution and advantages of the present invention clearer, the present invention is described below through specific embodiments shown in the accompanying drawings. It should be understood, however, that these descriptions are exemplary only and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concept of the present invention. Embodiment 1: as figure 1 As shown, a kind of mobile flue gas deacidification and desulfurization device of the present invention comprises sodium bicarbonate spraying device and mobile casing 14, and described baking soda spraying device comprises the feeding part that connects in sequence, weighing part, grinding part and conveying part;

[0028] The feeding part includes a silo 1 for storing baking soda, and a pneumatic valve 3 for controlling feeding is ar...

Embodiment 2

[0033] Embodiment 2: A method for using a flue gas deacidification and desulfurization device in a waste incineration power plant, using the mobile flue gas deacidification and desulfurization device system in Embodiment 1, comprising the following steps:

[0034] 1: Conveying and grinding: choose 60-mesh baking soda and put it into the silo, transport it to the grinder for grinding through the conveying fan, and grind it into 700 mesh after being ground by the grinder;

[0035] 2. Measuring and weighing: adjust the real-time flow rate of the weightless feeder according to the amount of garbage incinerated in the furnace, automatically set the frequency of the corresponding conveying fan, and control the input of baking soda to 4.2kg / ton of garbage in the furnace;

[0036] 3. Injection reaction and detection: Under the action of the blower, after grinding, the baking soda is blown into the reaction tower by the wind for deacidification and desulfurization reaction.

[0037] Af...

Embodiment 3

[0038] Embodiment 3: A method for using a flue gas deacidification and desulfurization device in a waste incineration power plant, using the mobile flue gas deacidification and desulfurization device system in Embodiment 1, which is different from that in Embodiment 2:

[0039] 1: Conveying and grinding: select 60-mesh baking soda into the silo, transport it to the grinder for grinding through the conveying fan, and grind it into 850 mesh after being ground by the grinder, and control the input amount of baking soda to be 4.2kg / ton into the furnace garbage;

[0040] After the above reaction, the concentration of HCl in the flue gas is 1-7mg / m 3 , SO 2 The average concentration is 1mg / m 3 , the index is far lower than the national standard GB18485-2014 standard and the European Union 2010 / 75 / EU standard.

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Abstract

The invention discloses a movable flue gas deacidification and desulfurization device and a using method thereof. The movable flue gas deacidification and desulfurization device comprises a baking soda spraying device and a movable box body, and the using method of the movable flue gas deacidification and desulfurization device comprises the steps: putting baking soda into a stock bin, starting a conveying fan, starting a grinding machine after the fan normally operates for 120 seconds, after the grinding machine normally operates for 60 seconds, starting a weightlessness scale feeder, enabling the weightlessness scale feeder to automatically set the frequency of a corresponding conveying fan in real time, feeding baking soda into the grinding machine through the conveying fan to be ground into powder, blowing the powder into the reaction tower by wind under the action of an air blower to be sprayed, mixing the baking soda and flue gas in the reaction tower to react, thereby achieving the deacidification and desulfurization. According to the invention, the flue gas deacidification and desulfurization device can be put into use in time when a traditional flue gas deacidification and desulfurization device system breaks down, and it is ensured that the flue gas emission index is normal.

Description

Technical field: [0001] The invention belongs to the technical field of waste incineration power generation, and specifically relates to a mobile flue gas deacidification and desulfurization device and a use method thereof. Background technique: [0002] Aiming at the large amount of toxic and harmful flue gas produced after waste incineration, the current mainstream flue gas purification system in the industry adopts the process of "SNCR + semi-dry deacidification / dry deacidification + activated carbon adsorption + bag dust removal + flue gas recirculation". Among them, the deacidification and desulfurization process adopts "semi-dry deacidification / dry deacidification", and the agents used are lime slurry and slaked lime. Due to the large fineness and particle size of the lime and the easy hardening during the transportation process, the lime utilization rate is low during the flue gas deacidification process, the deacidification efficiency is low, and the amount of residu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/83B01D53/56B01D53/50B01D53/68
CPCB01D53/508B01D53/565B01D53/685B01D53/83B01D2251/304
Inventor 李斯琪张世裕陈志林胡小满林金华黄超
Owner 瀚蓝(厦门)固废处理有限公司
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