CN201832535U - Desulfurization and denitration integrated device utilizing carbon method - Google Patents

Desulfurization and denitration integrated device utilizing carbon method Download PDF

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Publication number
CN201832535U
CN201832535U CN2010205474020U CN201020547402U CN201832535U CN 201832535 U CN201832535 U CN 201832535U CN 2010205474020 U CN2010205474020 U CN 2010205474020U CN 201020547402 U CN201020547402 U CN 201020547402U CN 201832535 U CN201832535 U CN 201832535U
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active carbon
desorption
tower tray
desulfurization
integral device
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CN2010205474020U
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解娟
甘腊根
庞博
董征
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解娟
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Abstract

The utility model relates to a device utilizing activated carbon to realize desulfurization and denitration of smoke, in particular to the device utilizing the activated carbon prepared by coked waste coke powder to realize desulfurization and denitration. The provided device requires small investment, has high desulfurization and denitration efficiency and can realize integrated absorption and desorption. Specifically, the device comprises a plurality of activated carbon desulfurization units, wherein each activated carbon desulfurization unit comprises an absorption segment and a desorption segment; the absorption segment is located at the upper part and is divided into four fluidized bed layers by a tray and an overflow weir; the desorption segment is located at the lower part and is divided into three lower bed layers by the tray and the overflow weir, and heaters are respectively arranged among the three lower bed layers; a tapered bucket is arranged at the lower end of the desorption segment, and an air power lifting device used for lifting the activated carbon for cycle use is connected at the lower part of the tapered bucket. The device changes the split type of a traditional absorption and desorption tower and also has the following characteristics: the technical process is simplified, the occupied area is small, small investment is required and the running cost is low.

Description

Charcoal method desulfurization and denitrification integral device
Technical field
The utility model relates to a kind of device that utilizes active carbon to realize flue gas desulfurization and denitrification, relates in particular to the device that the active carbon that utilizes the useless coke powder activation of coking preparation carries out desulphurization denitration.
Background technology
The pretreatment procedure of steel and iron industry comprises operations such as coking, sintering.Contain a large amount of sulfur dioxide (SO in the waste gas that discharge the sintering mill (plant) 2) and nitrogen oxide (NOx), the material that these all belong to atmosphere pollution is the task of top priority of environmental improvement.
The active carbon that utilizes coking coal powder moulding in steel plant's coking process and activation is as the filling bed, can flue gas by the time adsorb SO in this flue gas 2Specifically, the coke powder that coking process produces can be processed to have stronger vigor and highly active solid absorbent, removes SO in the sinter fume to be used as adsorbent 2In addition, in flue gas, add ammonia, reductive nitrogen compound wherein can be resolved into nitrogen and water.Thus, can reach the effect of desulphurization denitration simultaneously.At last, can be by indirect with by the SO of charcoal absorption 2Reclaim, so that as the raw material of industry.
The utility model content
The purpose of this utility model is to provide a kind of useless coke powder activation moulding that coking process can be produced so that deviate from SO in the flue gas 2Equipment.This equipment has overcome the defective that the absorption of traditional active carbon desulfurization and desorption must adopt two separate type towers, adsorption desulfurize process and desorption and regeneration process integration in an equipment, simplified technical process, and this occupation area of equipment are little, small investment, operating cost is low.
Comprise a plurality of active carbon desulfurizations unit according to charcoal method desulfurization and denitrification integral device of the present utility model, each active carbon desulfurization unit includes adsorption section, desorption section and active carbon circulation section, wherein, adsorption section and desorption intersegmental part are provided with tower tray and blast cap assembly and downflow weir, described tower tray and blast cap assembly comprise tower tray and blast cap, be provided with heater between the two-layer tower tray in the top part of desorption section, described active carbon circulation section comprises the active carbon carrier pipe, air lift mud pump and active carbon return bucket, awl bucket in the bottom part of this active carbon carrier pipe and desorption section is connected and can will be transported to active carbon from the active carbon that this awl struggles against by air lift mud pump and returns bucket, this active carbon returns bucket and links to each other with the top of adsorption section, thereby so that the active carbon of desorption and regeneration enter in this adsorption section and recycle.
This integrated apparatus allows to carry out desulfurization, denitration and dust removal process on same equipment, and can realize adsorb and the separating process set is an one.
Description of drawings
The elevational schematic view of the charcoal method fume desulfurizing tower that Fig. 1 relates to for the utility model;
Fig. 2 is the a-b face cutaway view of the charcoal method fume desulfurizing tower among Fig. 1;
The vertical view of the charcoal method fume desulfurizing tower that Fig. 3 relates to for the utility model; And
The tower tray that Fig. 4 relates to for the utility model and the enlarged drawing of blast cap assembly.
The specific embodiment
Fig. 1 illustrates charcoal method desulfurization and denitrification integral device of the present utility model, and the concrete form of this device is a desulfurizing tower 1.As can from Fig. 3, more being clear that, that this desulfurizing tower 1 comprises is a plurality of-10-active carbon desulfurization unit 110 for example.
As shown in Figure 2, each desulfurization unit 110 all comprises adsorption section 7, desorption section 8 and active carbon circulation section 2,3,4,5.Be provided with the tower tray and blast cap assembly 710 and the downflow weir 720 that are used to admit active carbon in adsorption section 7 and the desorption section 8, wherein said tower tray and blast cap assembly 710 comprise tower tray 712 and are connected blast cap 711 (see figure 4)s on this tower tray 712.As can be as can be seen from Figure 2, lay heater 9 between the two-layer tower tray in the top of desorption section 8, the bottom of this desorption section 8 then is connected with active carbon carrier pipe 4 by awl bucket 810, so that the effect by air lift mud pump 5 will be transported to active carbon from the active carbon of the desorption and regeneration of awl bucket 810 and return bucket 2, this active carbon returns 2 tops with adsorption section 7 of bucket and links to each other, thereby so that active carbon returns recycling of adsorption section and realization active carbon.Should be pointed out that in the utility model that at this " top " or " top " is meant the top of Fig. 2, " bottom " or " bottom " then is meant the bottom of Fig. 2 on the other side.
Still referring to Fig. 2, advantageously, desulfurizing tower 1 of the present utility model is provided with the air inlet flue that is used to introduce pending flue gas at the middle part, this air inlet flue has square smoke inlet 10, and be configured such that entering desulfurizing tower 1 interior flue gas by this smoke inlet 10 turns downwards, so that the active carbon on the tower tray 712 is blown afloat and make it fluidisation.
According to a kind of preferred embodiment, adsorption section 7 comprises and is used to adsorb SO 2With four active carbon fluid beds of NOx, described fluidized-bed layer by tower tray 712 and downflow weir 720 separately, and the height of institute's fluidized-bed layer is limited by the size of downflow weir 720.
In addition, 8 of desorption sections can be divided into three layers by tower tray 712 and downflow weir 720, and heater 9 can be placed in by between two last layers, for use in realizing desorption reaction.
As shown in Figure 4, preferred blast cap 711 is connected on this tower tray 712 transverse to tower tray 712 with uniform interval, wherein, tower tray 712 can have the perforate that preferred diameter is 31.5mm, and 711 of blast caps insert in the described perforate and for example form one by welding and tower tray 712.Preferably, the perforate on the described tower tray 712 is with the equilateral triangle pattern distribution and be covered with whole tower tray, and the centre-to-centre spacing of adjacent two perforates can be 55mm.
According to a kind of preferred embodiment of the present utility model, tower tray and blast cap assembly 710 can comprise the blast cap 711 more than 6000, so that make the pending flue gas that enters desulfurizing tower 1 when passing tower tray 712, pass through these blast caps 711 equably, fully the active carbon on the tower tray 712 blown afloat and make it fluidisation thus.
Air-flow makes progress from the centre bore of blast cap lower diameter 26mm, arrives the blast cap top, and via the hole horizontal direction that 8 diameters are 5mm, even 8 directions penetrate.
At last, as shown in Figure 2, desorption section 8 can have air intake 12 and adsorbate gas vent 13, and this air intake 12 is used for introducing air so that realize the fluidisation and the cooling of active carbon in desorption section 8, and 13 of this adsorbate gas vents can utilize air to take adsorbate gas out of desulfurizing tower 1.
Desulfurizing tower 1 of the present utility model is realized adsorption desulfurize and desorption and regeneration circulation by following manner:
The absorption course of work:
The sintering machine gas that needs to purify enters this desulfurizing tower 1 from smoke inlet 10, and is divided into for example 10 flue gas streams equably by the air inlet flue in this desulfurizing tower 1, and these flue gas flow points are turned (deflection) not downwards and entered adsorption section 7.Then, these flue gas streams pass tower tray 712 via for example more than 6000 blast cap 711 equably, thus the active carbon on the tower tray 712 are blown afloat and make it fluidisation.On fluid bed, the sintering device flue gas cross-flow produces mass transfer by activated carbon fluidized bed with active carbon.
In a kind of preferred embodiment, adsorption section 7 can form 4 and be used to adsorb SO 2With the active carbon fluid bed of NOx, the height of these beds is by the size decision of downflow weir 720.The efficient of absorption also can be subjected to the influence of the factors such as height, tray spacing of fluidized-bed layer except that activity that depends on activated carbon granule itself and desorption degree.
The sintering device flue gas that has purified gathers by for example 10 square orifices at the top of desulfurizing tower 1, and discharges via exhanst gas outlet 11, thereby enters next process.
Resolve the course of work:
The active carbon that has adsorbed adsorbate from adsorption section enters desorption section 8 along downflow weir 720, desorption after bringing-up section 9 heating, and wherein the desorption district adds the thermal recovery indirect.
Cold wind enters via the bottom of air intake 12 from desorption section 8, so that active carbon, fluidisation active carbon behind the cooling desorption.The adsorbate that is removed is drawn from exporting 13.
The adsorbate SO that draws 2Enter the condenser cooling, reclaim with NOx, and the incoagulable gas in the removal process is sent back to air intake 12.
Active carbon behind the desorption is discharged from the awl bucket 810 of desulfurizing tower 1.
The active carbon circulation:
The active carbon of desorptive activation enters air lift mud pump 5, therein with particle and powder separation.Then, resulting powder is sent combustion chambers burn, and resulting granules and the new active carbon that adds then are promoted to active carbon by active carbon carrier pipe 4 and return bucket 2, so that flow into the top layer of this device.Successively descend subsequently and adsorb, resolve and regenerate, recycling.Preferably, employed active carbon can have the particle diameter of 2-10mm in the desulfurizing tower 1 of the present utility model.
As shown in Figure 2, this active carbon circulatory system comprises that also being connected air lift mud pump 5 and active carbon returns anti-tracheae 3 between the bucket 2.Be used for carrying the gas of particle to return tracheae 3 and enter booster fan 6 downwards, so that recycling by air lift mud pump 5 along this.

Claims (12)

1. charcoal method desulfurization and denitrification integral device, it is characterized in that: this device comprises a plurality of active carbon desulfurizations unit (110), each active carbon desulfurization unit includes adsorption section (7), desorption section (8) and active carbon circulation section (2,3,4,5), wherein, adsorption section and desorption intersegmental part are provided with tower tray and blast cap assembly (710) and downflow weir (720), described tower tray and blast cap assembly comprise tower tray (712) and blast cap (711), be provided with heater (9) between the two-layer tower tray in the top part of desorption section, described active carbon circulation section comprises active carbon carrier pipe (4), air lift mud pump (5) and active carbon return bucket (2), awl bucket (810) in the bottom part of this active carbon carrier pipe (4) and desorption section is connected, and can will be transported to active carbon from the active carbon of this awl bucket by air lift mud pump (5) and return bucket (2), this active carbon returns bucket and links to each other with the top of adsorption section (7), thereby so that the active carbon of desorption and regeneration enter in this adsorption section and recycle.
2. charcoal method desulfurization and denitrification integral device according to claim 1, it is characterized in that: this device comprises 10 active carbon desulfurization unit (110).
3. charcoal method desulfurization and denitrification integral device according to claim 1, it is characterized in that: the middle part of this device is provided with the air inlet flue, this air inlet flue has square smoke inlet, and this air inlet flue is configured such that the flue gas in the access to plant can turn downwards, so that the active carbon on the tower tray is blown afloat and make it fluidisation.
4. charcoal method desulfurization and denitrification integral device according to claim 1, it is characterized in that: adsorption section comprises that four are used to adsorb SO 2With the active carbon fluid bed of NOx, described active carbon fluid bed is separated by tower tray and downflow weir, and the height of this active carbon fluid bed is by the size decision of downflow weir.
5. charcoal method desulfurization and denitrification integral device according to claim 1, it is characterized in that: the desorption section is divided into three layers by tower tray and downflow weir, and heater is arranged on and leans between two last layers to be used to realize desorption reaction.
6. charcoal method desulfurization and denitrification integral device according to claim 1, it is characterized in that: described tower tray and blast cap assembly include the blast cap more than 6000.
7. charcoal method desulfurization and denitrification integral device according to claim 1, it is characterized in that: described tower tray has the perforate that diameter is 31.5mm, and described blast cap inserts in this perforate and by welding and tower tray and links into an integrated entity.
8. charcoal method desulfurization and denitrification integral device according to claim 7 is characterized in that: the perforate on the described tower tray is with the equilateral triangle pattern distribution and be covered with whole tower tray, and the centre-to-centre spacing of adjacent two perforates is 55mm.
9. charcoal method desulfurization and denitrification integral device according to claim 1 is characterized in that: air-flow makes progress from the centre bore of blast cap lower diameter 26mm, arrives the blast cap top, and via the hole horizontal direction that 8 diameters are 5mm, even 8 directions penetrate.
10. charcoal method desulfurization and denitrification integral device according to claim 1, it is characterized in that: the particle diameter of described active carbon is between 2-10mm.
11. charcoal method desulfurization and denitrification integral device according to claim 1 is characterized in that: the described active carbon circulatory system comprises that also being connected air lift mud pump (5) and active carbon returns anti-tracheae (3) between the bucket (2).
12. charcoal method desulfurization and denitrification integral device according to claim 1, it is characterized in that: the desorption section is provided with air intake and adsorbate gas vent, air intake is introduced air so that realize the fluidisation and the cooling of active carbon, and the adsorbate gas vent is taken adsorbate gas out of this device.
CN2010205474020U 2010-09-29 2010-09-29 Desulfurization and denitration integrated device utilizing carbon method Expired - Fee Related CN201832535U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102688689A (en) * 2012-06-05 2012-09-26 山西英诺普环保咨询有限公司 Flue gas denitration method
CN102824809A (en) * 2012-09-21 2012-12-19 中冶长天国际工程有限责任公司 Adsorption tower
CN105749748A (en) * 2016-04-27 2016-07-13 山西普泰信环保工程有限公司 Desulfurization and denitration integrated device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102688689A (en) * 2012-06-05 2012-09-26 山西英诺普环保咨询有限公司 Flue gas denitration method
CN102824809A (en) * 2012-09-21 2012-12-19 中冶长天国际工程有限责任公司 Adsorption tower
CN102824809B (en) * 2012-09-21 2015-05-13 中冶长天国际工程有限责任公司 Adsorption tower
CN105749748A (en) * 2016-04-27 2016-07-13 山西普泰信环保工程有限公司 Desulfurization and denitration integrated device

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C17 Cessation of patent right
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Granted publication date: 20110518

Termination date: 20130929