A method and device for controlling sludge incineration fine particles by using boron nitride

A technology of fine particulate matter and sludge incineration, which is applied in chemical instruments and methods, separation methods, combined devices, etc., to achieve good auxiliary and synergistic effects, large specific surface area, and reduce equipment investment.

Active Publication Date: 2022-08-02
SHENYANG AEROSPACE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the adsorption of heavy metals and boron nitride, fine particles exist as both the adsorbent and the adsorbed substance, making the application of the three of them more likely

Method used

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  • A method and device for controlling sludge incineration fine particles by using boron nitride
  • A method and device for controlling sludge incineration fine particles by using boron nitride
  • A method and device for controlling sludge incineration fine particles by using boron nitride

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Embodiment 1

[0033] A method for controlling sludge incineration fine particles by utilizing boron nitride, comprising the steps of:

[0034] (1) Synthesis of fine particulate matter (PM10)

[0035] Mineral fine particulate matter (PM10) is synthesized according to the composition of sludge incineration fine particulate matter (except heavy metals), and under the condition that the total percentage of mineral particulate matter is stable at 88%, each particulate matter component is selected in order, followed by CaO: 17 %, SiO2: 15%, Fe2O3: 29%, Al2O3: 19%, MgO: 2.5%, P2O5: 5%, K2O: 0.5%; since the fine particles in addition to heavy metals, other components account for 88%, so equipped with 4.4g of fine particle sample 5g×0.88=4.4g, according to the proportion of the above-mentioned mineral particles, mix the powders of the mineral particles together, shake the oscillator for 20 minutes, and then add an organic flocculant to make it agglomerate. The particles were then ground in a mill a...

Embodiment 2

[0045] A method for controlling sludge incineration fine particles by utilizing boron nitride, comprising the steps of:

[0046] (1) Synthesis of fine particulate matter (PM10)

[0047] According to the composition of sludge incineration particulate matter (except heavy metals), fine particulate matter (PM10) is synthesized. Under the condition that the total percentage of mineral particulate matter is stable at 88%, the particulate matter components are selected in order, followed by CaO (18%), SiO2 (16%), Fe2O3 (28%), Al2O3 (18%), MgO (1.5%), P2O5 (5%), K2O (1.5%); except for heavy metals in fine particles, other components account for 88% , so, equipped with 4.4g sample of mineral fine particles (5g×0.88=4.4g), mix the powders of various mineral particles, shake the oscillator for 30min, add organic flocculant to make it agglomerate into particles, and then grind Grinding in the machine, blowing into the ELPI with a blower, and collecting fine particles with a particle siz...

Embodiment 3

[0055] A method for controlling sludge incineration fine particles by utilizing boron nitride, comprising the steps of:

[0056] (1) Synthesis of fine particulate matter (PM10)

[0057] According to the composition of sludge incineration particulate matter (except heavy metals) to synthesize fine particulate matter (PM10), under the condition that the total percentage of particulate matter composition is stable at 88%, the composition of each mineral particulate matter is selected in order, followed by CaO (19%), SiO 2 (17%), Fe 2 O 3 (29%), Al 2 O 3 (17%), MgO (1%), P 2 O 5 (4%), K 2 O (1%); since the proportion of other components in the fine particles is 88% except for heavy metals, a 4.4g sample of fine particles (5g×0.88=4.4g) is prepared, and the powders of the particles are mixed together and shaken by an oscillator. After 40 minutes, an organic flocculant was added to make it agglomerate into particles, which were then ground in a grinder, and blown into the EL...

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Abstract

The present invention relates to a method for treating fine particles in sludge incineration flue gas, and proposes the potential of fine particles in adsorption. The competitive adsorption of heavy metals and fine particles by high-temperature adsorbent boron nitride, as well as the inhibition of boron nitride on intermediates during the formation of fine particles, is used to solve the problem of capture and emission of fine particles. A boronide control method for sludge incineration of fine particulate matter, and according to another aspect of the present invention there is also provided a particulate removal device employed in the method.

Description

technical field [0001] The invention relates to a method for treating fine particles in sludge incineration flue gas, and proposes the potential of fine particles in adsorption. The competitive adsorption of heavy metals and fine particles by high-temperature adsorbent boron nitride, as well as the adsorption of boron nitride to intermediates in the formation of fine particles, is used to solve the problem of capture and emission of fine particles. A method for boron-controlled sludge incineration of fine particles, and a device used in the method. Background technique [0002] At present, the commonly used particle treatment methods are basically based on physical collision and partition, including electrostatic precipitator, bag filter, etc. However, the above methods are only efficient enough to remove particles with relatively large particle size, and the treatment efficiency of fine particles is relatively unsatisfactory. In the single treatment of fine particles, lit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/02B01J20/28B01J20/30B01D53/02B01D50/00F23J15/00
CPCB01J20/0248B01J20/0259B01J20/28011B01J20/30B01J20/3021B01J20/3078B01D53/02B01D50/00F23J15/003F23J15/025B01D2257/60B01D2258/0283
Inventor 李彦龙满佳琪李润东房振全刘菲菲
Owner SHENYANG AEROSPACE UNIVERSITY
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