CN205461739U - Improved generation acid gas absorbing device - Google Patents

Improved generation acid gas absorbing device Download PDF

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Publication number
CN205461739U
CN205461739U CN201620081045.0U CN201620081045U CN205461739U CN 205461739 U CN205461739 U CN 205461739U CN 201620081045 U CN201620081045 U CN 201620081045U CN 205461739 U CN205461739 U CN 205461739U
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China
Prior art keywords
wash tower
caustic wash
flue gas
acid gas
nozzle
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CN201620081045.0U
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Chinese (zh)
Inventor
王新民
吕文豪
仲伟聪
张晓明
乔小鹏
赵强
冷健
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Xi'an Aerospace Propulsion Engineering Co Ltd
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Xi'an Aerospace Propulsion Engineering Co Ltd
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Priority to CN201620081045.0U priority Critical patent/CN205461739U/en
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Abstract

The utility model discloses an improved generation acid gas absorbing device, include: a caustic wash tower, a flue gas inlet port that is located the caustic wash tower lower part, one set up in the caustic wash tower middle part to through the tube coupling lye tank, the lye tank includes atomizing spray gun and hollow cone nozzle that a plurality of parallels were arranged, nozzle that atomizing spray gun tip set up and the hollow cone nozzle is all perpendicularly towards the caustic wash tower lower part, one lies in equally the defroster at caustic wash tower middle part, the defroster with arrange in two liang of intervals of atomizing spray gun, still include one with the compressed air of atomizing spray gun tube coupling provides the pipeline. In the caustic wash tower, the alkali lye of finite concentration fully contacts with the flue gas spout the caustic wash tower through the nozzle in, and alkali lye reacts with the acid gas emergence in the flue gas, makes acid gas obtain the neutralization to get into the chimney and discharge, reach the environmental protection and discharge the requirement.

Description

A kind of modified model acid gas absorption plant
Technical field
This utility model relates to a kind of modified model acid gas absorption plant, completes acid gas removal, flue gas except the process of mist, can effectively remove HCl, the SO in flue gas2Deng sour gas so that the flue gas qualified discharge after purification.
Background technology
In desulfurization and the technical process such as waste liquid, useless solid burning, containing certain sour gas in the flue gas produced after burning, if directly discharged, due to cold end corrosion, equipment can be produced certain damage, environment is caused certain pollution simultaneously.Therefore environmental requirement the sour gas in flue gas is absorbed up to standard after discharge.
The generally absorption to sour gas is realized by alkali liquor circulated sprinkling in caustic wash tower.In conventional caustic wash tower, generally arranging two-layer alkali liquor circulated sprinkling, absorb acid gas in flue gas, the droplet in flue gas is removed after alkali cleaning by flue gas by demister, enter chimney to discharge, periodically turn on mist eliminator flushing water and demister is rinsed.
But in practice it is found that two-layer alkali liquor circulated sprinkling is to the assimilation effect of sour gas bad, the gas through smoke stack emission is faintly acid.I.e. alkali cleaning effect the most preferable requirement.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of modified model acid gas absorption plant, in caustic wash tower, certain density alkali liquor sprays in caustic wash tower by nozzle, it is fully contacted with flue gas, alkali liquor reacts with the sour gas in flue gas, make sour gas be neutralized, discharge hence into chimney, reach environment protection emission requirement;In this utility model, by the transformation to mist eliminator flushing water route, improve the caustic wash tower assimilation effect to sour gas.
For reaching above-mentioned purpose, the technical solution of the utility model is as follows:
A kind of modified model acid gas absorption plant, including:
One caustic wash tower;
The one flue gas inlet port being positioned at caustic wash tower bottom;
One is arranged in the middle part of described caustic wash tower, and connects lye tank (vat) by pipeline, and described lye tank (vat) includes atomizing lance and the hollow cone nozzle of some parallel arrangements, the nozzle of described atomizing lance end setting and described hollow cone nozzle the most vertically caustic wash tower bottom;
One is similarly positioned in the demister in the middle part of described caustic wash tower, and described demister is intervally arranged two-by-two with described atomizing lance;
Also include that a compressed air being connected with described atomizing lance pipeline provides pipeline.
In a preferred embodiment of the present utility model, described atomizing lance and described hollow cone nozzle are two.
In a preferred embodiment of the present utility model, the top of the collection port of described demister vertically caustic wash tower.
By technique scheme, the beneficial effects of the utility model are:
This utility model is not on the basis of changing existing equipment, bypass by mist eliminator flushing water lines being set up alkali cleaning, and alkali liquor is carried out assisted atomization by compressed air, spray in caustic wash tower by two-fluid spray gun, it is fully contacted with flue gas, thus improves the assimilation effect to acid gas in flue gas;Under normal circumstances, open mist eliminator flushing scale and wash bypass, be periodically switched to mist eliminator flushing water and demister is rinsed.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Numeral and the corresponding component title represented by letter in figure:
1. caustic wash tower, 2. lye tank (vat), 3. alkali liquor circulated sprinkling pump, 4. hollow cone, 5. atomizing lance, 6. demister, 7. chimney
Detailed description of the invention
For the technological means making this utility model realize, creation characteristic, reach purpose and be easy to understand with effect, below in conjunction with being specifically illustrating, this utility model is expanded on further.
With reference to Fig. 1, a kind of modified model acid gas absorption plant, including: a caustic wash tower 1;The one flue gas inlet port being positioned at caustic wash tower 1 bottom;One is arranged in the middle part of described caustic wash tower, and connect lye tank (vat) by pipeline, described lye tank (vat) 2 includes atomizing lance 5 and the hollow cone nozzle 4 of some parallel arrangements, the nozzle of described atomizing lance end setting and described hollow cone nozzle the most vertically caustic wash tower bottom;One is similarly positioned in the demister 6 in the middle part of described caustic wash tower, and described demister 6 is intervally arranged two-by-two with described atomizing lance;Also include that a compressed air being connected with described atomizing lance pipeline provides pipeline.
The exhaust gas volumn produced after liquid waste incineration is 15100Nm3/ h, the entrance flue gas temperature entering caustic wash tower 1 is 150 DEG C, a diameter of 2000mm of caustic wash tower 1, and height is 11m.Flue gas flow velocity in caustic wash tower is 3m/s, and alkali liquor is 3L/Nm with the liquid-gas ratio of flue gas3, alkali storage is in lye tank (vat) 2, and alkali liquor circulated sprinkling amount is about 45m3/ h, alkali liquor is carried by alkali liquor circulated sprinkling pump 3, sprays in caustic wash tower after hollow cone nozzle 4 is atomized, and the droplet in flue gas is collected through demister 6, enters in chimney 7 and discharges.Through alkali liquor circulated sprinkling, caustic wash tower exit gas temperature is 84 DEG C.
The operating procedure of whole system is as follows:
The flue gas of 1150 DEG C enters in caustic wash tower 1, starts alkali liquor circulated sprinkling pump 3, is fully contacted with flue gas, absorbs the pickling gas in flue gas after the alkali liquor supercharging hollow cone nozzle 4 being stored in lye tank (vat) 2 atomization in spraying into caustic wash tower;
Usually, atomizing lance and described hollow cone nozzle are two.After improvement, upper two layers former mist eliminator flushing water changes the atomizing lance of two-fluid into, but need not compressed air with fresh water (FW) flushing demister be atomized, and when being circulated spray with alkali liquor, compressed air is needed to carry out assisted atomization, therefore need for twice to add compressed air road above, and two-layer alkali liquor circulated sprinkling used hollow cone nozzle the most originally, atomizing effect is good, it is not necessary to compressed air is atomized.
Compressed air is for being atomized alkali liquor in two-fluid spray gun, makes alkali liquor size droplet diameter less and uniform, it is ensured that the atomizing particle size of mist field uniformity, coverage rate and drop, improves the mixability of alkali liquor and sour gas.
The droplet carried in reacted flue gas is collected, through demister 6, the drop that separating flue is carried secretly, prevent fan belt water, demister can carry out periodic flushing by mist eliminator flushing water to it after collecting drop, periodically starts mist eliminator flushing water route and is rinsed demister;Flue gas after alkali cleaning enters in chimney 7 and discharges.
Under normal circumstances, start alkali liquor circulated sprinkling pump, open lower floor's spraying layer related valve, alkali liquor spray bypass in mist eliminator flushing water route is opened simultaneously, alkali liquor contacts with flue gas in spraying into caustic wash tower by four layers, owing to adding the spray number of plies, simultaneously by compressed air assisted atomization, reach preferable spraying effect, improve the absorption to pickling gas.
After running a period of time, by mist eliminator flushing scale liquid bypass changeover to rinsing water route, demister is rinsed.
Of the present utility model ultimate principle and principal character and of the present utility model advantage have more than been shown and described.Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; described in above-described embodiment and description, principle of the present utility model is simply described; on the premise of without departing from this utility model spirit and scope; this utility model also has various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.This utility model claims scope and is defined by appending claims and equivalent thereof.

Claims (3)

1. a modified model acid gas absorption plant, it is characterised in that including:
One caustic wash tower;
The one flue gas inlet port being positioned at caustic wash tower bottom;
One is arranged in the middle part of described caustic wash tower, and connects lye tank (vat) by pipeline, and described lye tank (vat) includes atomizing lance and the hollow cone nozzle of some parallel arrangements, the nozzle of described atomizing lance end setting and described hollow cone nozzle the most vertically caustic wash tower bottom;
One is similarly positioned in the demister in the middle part of described caustic wash tower, and described demister is intervally arranged two-by-two with described atomizing lance;
Also include that a compressed air being connected with described atomizing lance pipeline provides pipeline.
A kind of modified model acid gas absorption plant the most according to claim 1, it is characterised in that described atomizing lance and described hollow cone nozzle are two.
A kind of modified model acid gas absorption plant the most according to claim 1, it is characterised in that the top of the collection port of described demister vertically caustic wash tower.
CN201620081045.0U 2016-01-27 2016-01-27 Improved generation acid gas absorbing device Active CN205461739U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201620081045.0U CN205461739U (en) 2016-01-27 2016-01-27 Improved generation acid gas absorbing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620081045.0U CN205461739U (en) 2016-01-27 2016-01-27 Improved generation acid gas absorbing device

Publications (1)

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CN205461739U true CN205461739U (en) 2016-08-17

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111589289A (en) * 2020-05-06 2020-08-28 广州环投福山环保能源有限公司 Utilize deacidification device of two fluid spray guns atomizing alkali lye

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111589289A (en) * 2020-05-06 2020-08-28 广州环投福山环保能源有限公司 Utilize deacidification device of two fluid spray guns atomizing alkali lye

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