CN104667698A - Absorption tower and air inlet passage of heating gas thereof - Google Patents
Absorption tower and air inlet passage of heating gas thereof Download PDFInfo
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- CN104667698A CN104667698A CN201510025718.0A CN201510025718A CN104667698A CN 104667698 A CN104667698 A CN 104667698A CN 201510025718 A CN201510025718 A CN 201510025718A CN 104667698 A CN104667698 A CN 104667698A
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- air inlet
- analytic tower
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Abstract
The invention relates to the technical field of activated carbon desulfurization and denitrification, and provides an absorption tower and an air inlet passage of the heating gas thereof. The absorption tower comprises an air inlet buffer chamber arranged between an air inlet pipeline and the wall of the tower; the air inlet of the air inlet buffer chamber is located on the outer wall, which is directly connected with the wall of the tower, of the air inlet buffer chamber; the air inlet buffer chamber is connected with the wall of the absorption tower through a flow equalizing plate, and the flow capacity of the flow equalizing plate in the air inlet direction of the air inlet is gradually increased from the center to the two ends. Compared with the prior art, firstly, the problem that the flow rate is nonuniform caused by the sudden increase of the space when heating directly enters the absorption tower through the air inlet pipeline is solved. Secondly, the limit of the arrangement of pipelines is broken through, so that the technical risk and cost are lowered. Furthermore, the flow capacity of the flow equalizing plate in the air inlet direction of the air inlet is gradually increased from the center to the two ends, so that adverse effect caused by the decreasing trend of flow rate of the heating gas in the diffusion direction from the center to the outer end is avoided.
Description
Technical field
The present invention relates to active carbon desulfurization denitration technology field, particularly relate to a kind of Analytic Tower and heated air inlet channel thereof of active carbon desulfurization denitration.
Background technology
Adsorption tower and Analytic Tower are two key reaction places of active carbon desulfurization denitration technology, and the two organic cooperation completes the absorption of discharge harmful substances from flue gases, and the regeneration of active carbon and activation; This technology is using active carbon as catalyst, removes the SO in flue gas
2, NO
xdeng pernicious gas, thus, on the basis meeting fume emission requirement, recoverable high concentration SO
2, realize recycling of active carbon simultaneously.
As everyone knows, adsorb the regenerating active carbon activating technology of harmful substance, mainly comprised dosing and resolve and add Thermal desorption two kinds of modes.Wherein, the mode of resolving is carried out based on heat activated charcoal, utilize the active carbon in thermal medium indirect Analytic Tower, active carbon keeps the regular hour at high-temperature region (320-490 DEG C), adsorbed harmful substance is made to be discharged active carbon, get final product the adsorption function of activity recovery charcoal, realize the regeneration of active carbon.Refer to Fig. 1, the figure shows the overall structure schematic diagram of a kind of typical Analytic Tower in prior art.
Be furnished with the heat exchanger tube of vertical direction in the tower body of Analytic Tower, active carbon enters in heat exchanger tube from the through hole of upper perforated plate, passes through heat exchanger tube, flows out from lower perforated plate.Heated air enters from the heating gas inlet lower shell, the area cirulating between outside cylindrical shell and heat exchanger tube, flows out from the heated air outlet upper shell.In the process of flowing, the active carbon in hot gas heating heat exchanger tube, make it to reach resolution temperature, the active carbon reaching resolution temperature is resolved in heat exchanger tube.Control the heating of active carbon, make it to resolve fully, then require the strict flow velocity controlling heated air, and the speed ensureing to enter the heated air of resolving tower body is evenly distributed flowing on cross section.
In prior art, active carbon desulfurization denitration reaction place relevant apparatus and the densely distributed complexity of pipeline, sometimes the change of a simple pipeline distribution has the effect of pulling one hair and move the whole body, and cause follow-up a large amount of Technical investment, cause a series of technical barrier and risk, therefore, need relevant apparatus to have certain function elasticity, to adapt to the Pipe installing mode of diverse location.With regard to the heated air air intake structure of Analytic Tower, heated air enters parsing tower body from high-temperature pipe, it would be desirable with the direction perpendicular to Analytic Tower tower wall incident, Analytic Tower inner chamber is directly entered from heating gas inlet, but field condition is many times by the limitation of the device such as air-heating furnace, air blast, to make heated air with the incident Analytic Tower of desired angle, the lengthening of high-temperature pipe needs or high-temperature pipe certainly will be caused to arrange and to become more complicated, and this cost that all will develop skill undoubtedly, elicitation technique risk.
In view of this, the space advantage adopting the high-temperature pipe distribution of more pressing close to Analytic Tower tower wall to exist seems very outstanding, but based on this high-temperature pipe distribution technique, due to right-angle steering, heated air, when entering Analytic Tower inner chamber, flows to cross section last some gas flow rate skewness.
Summary of the invention
(1) technical problem that will solve
The technical problem to be solved in the present invention is exactly how to propose a kind of high-temperature pipe distribution technique more pressing close to Analytic Tower tower wall, and overcomes the uneven problem of the heated air flow velocity that cross section exists based on flowing to of existing of this technology.
(2) technical scheme
In order to solve the problems of the technologies described above, the invention provides a kind of Analytic Tower heated air inlet channel, comprising the air inlet surge chamber be arranged between admission line and tower wall;
On the outer wall be directly connected with described tower wall that the air inlet of described air inlet surge chamber is positioned at air inlet surge chamber;
Be connected by homogenizing plate between described air inlet surge chamber with Analytic Tower tower wall, the negotiability of described homogenizing plate on inlet charge direction strengthens from center gradually toward end positions.
Preferably, described homogenizing plate is distributed with pore, and on inlet charge direction, the air vent aperture near two ends is large and densely distributed, and the air vent aperture being positioned at middle part is little and distribute sparse.
Preferably, described homogenizing plate is distributed with the blinds installed perpendicular to inlet charge direction, and on inlet charge direction, from center toward end positions, the inclination angle of blinds increase gradually and/or the installation of blinds intensive gradually.
Preferably, the tilt adjustable of described blinds.
Preferably, described inlet charge direction is horizontal direction, and the inner chamber of described air inlet surge chamber is symmetrical up and down relative to a horizontal plane, and described air inlet is positioned at described elevation of water.
Preferably, described inlet charge direction is vertical direction, and symmetrical before and after the relative perpendicular of inner chamber of described air inlet surge chamber, described air inlet is positioned on described perpendicular.
Preferably, described homogenizing plate is surface plate or curved slab.
Preferably, the inner chamber of described air inlet surge chamber is cuboid cavity, and the profile of described air inlet surge chamber is cuboid.
Preferably, described air inlet is positioned at leading flank or the trailing flank of described air inlet surge chamber.
The present invention also provides a kind of active carbon desulfurization denitration Analytic Tower, comprises Analytic Tower heated air inlet channel provided by the invention.
(3) beneficial effect
A kind of Analytic Tower of the present invention and heated air inlet channel thereof, an air inlet surge chamber is set between admission line and tower wall, heated air is avoided directly to enter in Analytic Tower by admission line, because space becomes the problem causing greatly heated air flow velocity in tower body uneven suddenly.Secondly, by reasonably arranging the position of air inlet, the airflow direction that air inlet is passed into is parallel to described tower wall, the limitation that the air inlet position that breaks traditions is brought to pipe arrangement, avoids conventional pipelines distribute the technical risk brought, reduction technical costs.Further, between air inlet surge chamber and Analytic Tower tower wall, homogenizing plate is set, the negotiability of described homogenizing plate on inlet charge direction strengthens from center gradually toward end positions, thus avoids heated air on inlet charge direction toward the adverse effect that the outer end dispersal direction flow velocity trend of tapering off is brought.
In preferred version of the present invention, homogenizing plate is distributed with pore, and on inlet charge direction, air vent aperture near two ends is large and densely distributed, the air vent aperture being positioned at middle part is little and distribute sparse, make the gas at the middle part that velocity of liquid assets is fast originally, during and the pore that distribute sparse little by middle aperture, speed is subject to a definite limitation, and the gas at originally two ends that velocity of liquid assets is relatively slow, when flowing through the large and densely distributed pore of air vent aperture, its original speed can be relatively kept to pass through.
In another preferred version of the present invention, homogenizing plate is installed the blinds perpendicular to inlet charge direction, and along inlet charge direction, different layout is done to blinds, Shi Qicong center is toward end positions, the inclination angle of blinds increases gradually, or the installation of blinds is intensive gradually, or both combine, thus make the gas at the middle part that velocity of liquid assets is fast originally, during by blinds that inclination angle, middle part is less, speed is subject to a definite limitation, and the gas at two ends that velocity of liquid assets is relatively slow originally, when flowing through the blinds of high inclination-angle, its original speed can be relatively kept to pass through.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1: the overall structure schematic diagram of existing a kind of typical Analytic Tower;
Fig. 2-1: a kind of Analytic Tower overall structure schematic diagram provided by the invention;
The A-A cross-sectional schematic of the heated air inlet channel that a kind of Analytic Tower shown in Fig. 2-2: Fig. 2-1 is whole;
Fig. 3: the structural representation of the homogenizing plate of the Analytic Tower that first embodiment of the invention is corresponding;
Fig. 4-1: the structural representation of the homogenizing plate of the Analytic Tower that second embodiment of the invention is corresponding;
The B-B cross-sectional schematic of homogenizing plate shown in Fig. 4-2: Fig. 4-1.
In figure: 1, air inlet; 2, Ta Bi; 3, air inlet surge chamber; 4, homogenizing plate.
Detailed description of the invention
Below in conjunction with drawings and Examples, embodiments of the present invention are described in further detail.Following examples for illustration of the present invention, but can not be used for limiting the scope of the invention.
Without loss of generality, present embodiment is described in detail using Analytic Tower as main body, be to be understood that, the heated air inlet channel that the application provides is applicable to any pipe arrangement and strictly limits by working environment, and wish that gas trends towards the use occasion of more evenly circulation, but not be confined to the application in Analytic Tower simultaneously.
Embodiment one
Refer to Fig. 2-1, this figure is the overall structure schematic diagram of Analytic Tower device described in the present embodiment.
This Analytic Tower device comprises two Analytic Tower main bodys, so that on the basis meeting system analysis ability, controls the safe altitude of tower body.The active carbon completing absorption enters the heat exchanger tube in two Analytic Tower main bodys through feed bin, in two Analytic Tower main bodys, utilize heated gas heats heat exchanger tube, thus the active carbon in indirect Analytic Tower, active carbon keeps the regular hour at high-temperature region (320-490 DEG C), makes adsorbed SO
2issue solution estranged etc. harmful substance high temperature and discharge, getting final product the adsorption function of activity recovery charcoal, realize the regeneration of active carbon; Recapture active active carbon to be discharged by the bottom of Analytic Tower, be transported to adsorption tower top via conveyer and recycle.
It should be noted that, feeding and discharging system, the high concentration of this Analytic Tower device resolve the functional parts such as the recycling of gas, all can adopt existing techniques in realizing, therefore repeat no more herein.
In the present embodiment, described Analytic Tower heated air inlet channel comprises the air inlet surge chamber 3 be arranged between admission line and tower wall 2, on the outer wall be directly connected with described tower wall 2 that the air inlet 1 of described air inlet surge chamber 3 is positioned at air inlet surge chamber 3.Based on this, the airflow direction that the air inlet 1 on air inlet surge chamber 3 outer wall passes into is parallel to described tower wall 2, and herein parallel is not proper parallel certainly, should the situation with the certain acute angle of 2 one-tenth, tower wall that be understood to include of good will.The heated air of air inlet surge chamber 3 is entered into from air inlet 1, to flow in Analytic Tower, then need to change its flow direction, now air inlet 1 place gas flow with enter resolve tower body gas flow theoretically close to plumbness, and this will be when will cause heated air to enter Analytic Tower inner chamber, on inlet charge direction, there is the problem of the trend that to taper off from middle part toward two ends.
What illustrate is, in the application, inlet charge direction refers to heated air is entered air inlet surge chamber 3 by air inlet 1 direction from high-temperature pipe, and the direction entering Analytic Tower refers to heated air enters Analytic Tower inner chamber direction from air inlet surge chamber 3, only have and distinguish above two concepts, the technical scheme of ability correct understanding the application.
Wherein a kind of detailed protocol that the present embodiment provides is, when needs heated air horizontal direction enters air inlet surge chamber 3 time, the inner chamber suitable design of described air inlet surge chamber 3 becomes a relative laterally zygomorphic structure of horizontal plane, thus make the flow path of heated air more regular and can expect, now air inlet 1 is positioned at the horizontal plane of symmetry height of described air inlet surge chamber 3, as shown in Fig. 2-2, the heated air at air inlet 1 place will enter into Analytic Tower inner chamber through turning round of an approximate right angle, enter the heated air before Analytic Tower now on horizontal inlet charge direction, flow velocity tapers off from middle part toward two ends trend.
In view of this, this enforcement provides a kind of feature board, its effect makes heated air when entering Analytic Tower inner chamber, even along described inlet charge side upward velocity, in this application by this feature board referred to as homogenizing plate 4, its structure can see Fig. 3, described homogenizing plate 4 is distributed with pore, and on horizontal inlet charge direction, air vent aperture near two ends is large and densely distributed, the air vent aperture being positioned at middle part is little and distribute sparse, make the gas at the middle part that velocity of liquid assets is fast originally, during and the pore that distribute sparse little by middle aperture, speed is subject to a definite limitation, and the gas at originally two ends that velocity of liquid assets is relatively slow, when flowing through the large and densely distributed pore of air vent aperture, its original speed can be relatively kept to pass through, thus ensure consistent by the speed convergence of the heated air after homogenizing plate 4 on each aspect of the airintake direction of described air inlet.
The present embodiment also can change the position of air inlet 1, heated air is made vertically to enter air inlet surge chamber 3, now other design is the same with above-mentioned, just accordingly, now the inner chamber of air inlet surge chamber 3 is more preferably designed to symmetrical structure before and after a relative perpendicular (described perpendicular is parallel to drawing), air inlet is arranged on the symmetrical perpendicular of described air inlet surge chamber 3, the heated air of Analytic Tower inner chamber is entered from air inlet surge chamber 3, on vertical inlet charge direction, there is the problem of the trend that to taper off from middle part toward two ends.To should situation, be vertical inlet charge direction by the design modifying on the horizontal inlet charge direction of above-mentioned homogenizing plate, namely adjustable heated air enters the speed of Analytic Tower inner chamber.
Certainly, the inlet charge direction in the present embodiment is not limited to several situations mentioned in concrete scheme, can be any one direction being parallel to wall, in like manner only the design of homogenizing plate need be done corresponding adjustment.
In the present embodiment, it is dull and stereotyped that homogenizing plate 4 is preferably rectangle current-sharing, first manufacturing process, the rectangular flat of rule more easily realizes, secondly the pore size distribution based on rectangular flat more easily designs, certainly the situation that homogenizing plate 4 is set to the surface plate of curved slab or other shapes is not got rid of yet, their operation principle is all the same with during rectangular flat, just relatively more complicated.
In the present embodiment, the profile of air inlet surge chamber 3 does not have an impact for the flow velocity controlling heated air, but based on the standardization of producing and complexity, be preferably rectangular structure by the sharp processing of air inlet surge chamber 3, now in air inlet 1 front and back sides that can be arranged on air inlet surge chamber 3 or upper and lower surface.
Based on the Analytic Tower of the present embodiment, it is in course of normal operation, heated air enters Analytic Tower inside after homogenizing plate 4, make thermally equivalent between the various heat exchange pipe in Analytic Tower, in addition, in the present invention, the bottom discharging storehouse of Analytic Tower is provided with round roller material discharging machine, can be regulated the circulation of active carbon by round roller material discharging machine, control the heating of active carbon in Analytic Tower and reaction time thus, thus ensure that the active carbon in all heat exchanger tubes is resolved fully.
Embodiment two
The overall structure schematic diagram of Analytic Tower device described in the present embodiment is as shown in Fig. 2-1, the structure of its homogenizing plate 4 is with the first embodiment difference, corresponding heated air horizontal direction enters the situation of air inlet surge chamber 3, homogenizing plate 4 described in the present embodiment is distributed with the vertical blinds installed, and on horizontal inlet charge direction, from middle part toward end positions, the inclination angle of blinds increases gradually, make the gas at the middle part that velocity of liquid assets is fast originally, during by blinds that inclination angle, middle part is less, speed is subject to a definite limitation, and the gas at originally two ends that velocity of liquid assets is relatively slow, when flowing through the blinds of high inclination-angle, its original speed can be relatively kept to pass through, specifically refer to Fig. 4-1 and 4-2.Blinds in embodiment can adopt the version of tilt adjustable, thus tackles different through-flow control situation.
What deserves to be explained is, except changing the inclination angle of blinds, density degree installed by reasonable Arrangement blinds also can reach the object controlling homogenizing plate through-current capability, and this technical staff is readily appreciated that, does not therefore enumerate in embodiment.
Identical with the first embodiment, corresponding different inlet charge directions, only need the orientation of corresponding adjustment air inlet 1, the structure of air inlet surge chamber 3, the structure of homogenizing plate 4, just can reach the same uniform object of coutroi velocity, therefore no longer describe in detail.
The Analytic Tower device provided of the present embodiment and the operation principle of Analytic Tower heated air inlet channel thereof repeat no more herein, refer to the first embodiment.
Above embodiment is only for illustration of the present invention, but not limitation of the present invention.Although with reference to embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, various combination, amendment or equivalent replacement are carried out to technical scheme of the present invention, do not depart from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of right of the present invention.
Claims (10)
1. an Analytic Tower heated air inlet channel, is characterized in that, comprises the air inlet surge chamber be arranged between admission line and tower wall;
On the outer wall be directly connected with described tower wall that the air inlet of described air inlet surge chamber is positioned at air inlet surge chamber;
Be connected by homogenizing plate between described air inlet surge chamber with Analytic Tower tower wall, the negotiability of described homogenizing plate on inlet charge direction strengthens from center gradually toward end positions.
2. Analytic Tower heated air inlet channel according to claim 1, it is characterized in that, described homogenizing plate is distributed with pore, and on inlet charge direction, large and densely distributed near the air vent aperture at two ends, the air vent aperture being positioned at middle part is little and distribute sparse.
3. Analytic Tower heated air inlet channel according to claim 1, it is characterized in that, described homogenizing plate is distributed with the blinds installed perpendicular to inlet charge direction, and on inlet charge direction, from center toward end positions, the inclination angle of blinds increase gradually and/or the installation of blinds intensive gradually.
4. Analytic Tower heated air inlet channel according to claim 3, is characterized in that, the tilt adjustable of described blinds.
5. Analytic Tower heated air inlet channel as claimed in any of claims 1 to 4, it is characterized in that, described inlet charge direction is horizontal direction, and the inner chamber of described air inlet surge chamber is symmetrical up and down relative to a horizontal plane, and described air inlet is positioned at described elevation of water.
6. Analytic Tower heated air inlet channel as claimed in any of claims 1 to 4, it is characterized in that, described inlet charge direction is vertical direction, and symmetrical before and after the relative perpendicular of inner chamber of described air inlet surge chamber, described air inlet is positioned on described perpendicular.
7. Analytic Tower heated air inlet channel as claimed in any of claims 1 to 4, is characterized in that, described homogenizing plate is surface plate or curved slab.
8. Analytic Tower heated air inlet channel as claimed in any of claims 1 to 4, is characterized in that, the inner chamber of described air inlet surge chamber is cuboid cavity, and the profile of described air inlet surge chamber is cuboid.
9. Analytic Tower heated air inlet channel according to claim 8, is characterized in that, described air inlet is positioned at leading flank or the trailing flank of described air inlet surge chamber.
10. an active carbon desulfurization denitration Analytic Tower, is characterized in that, comprises the Analytic Tower heated air inlet channel in claim 1 to 9 described in any one.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510025718.0A CN104667698B (en) | 2015-01-19 | 2015-01-19 | A kind of Analytic Tower and its hot gas inlet channel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510025718.0A CN104667698B (en) | 2015-01-19 | 2015-01-19 | A kind of Analytic Tower and its hot gas inlet channel |
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| CN104667698A true CN104667698A (en) | 2015-06-03 |
| CN104667698B CN104667698B (en) | 2017-07-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111854428A (en) * | 2019-04-29 | 2020-10-30 | 伊利诺斯工具制品有限公司 | Take cleaning device and have sintering furnace who takes cleaning device |
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| CN203212532U (en) * | 2013-03-22 | 2013-09-25 | 中国科学院山西煤炭化学研究所 | Fluidized bed powder coal gasifier gas distribution plate |
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| CN2463043Y (en) * | 2001-01-03 | 2001-12-05 | 太原理工大学 | Gas distributing board |
| CN102116481A (en) * | 2009-12-30 | 2011-07-06 | 中冶长天国际工程有限责任公司 | Re-combusting equipment and waste heat recovery method thereof |
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| CN104667698B (en) | 2017-07-25 |
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