CN203556204U - Impurity elimination module - Google Patents

Impurity elimination module Download PDF

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Publication number
CN203556204U
CN203556204U CN201320687070.XU CN201320687070U CN203556204U CN 203556204 U CN203556204 U CN 203556204U CN 201320687070 U CN201320687070 U CN 201320687070U CN 203556204 U CN203556204 U CN 203556204U
Authority
CN
China
Prior art keywords
liquid
cyclone
centrifugal separator
dust
swirler
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320687070.XU
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Chinese (zh)
Inventor
吴嘉乐
宣剑国
田克胜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Haisum Engineering Co Ltd
Original Assignee
China Haisum Engineering Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Haisum Engineering Co Ltd filed Critical China Haisum Engineering Co Ltd
Priority to CN201320687070.XU priority Critical patent/CN203556204U/en
Application granted granted Critical
Publication of CN203556204U publication Critical patent/CN203556204U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses an impurity elimination module which is characterized by comprising a swirler, wherein an absorbing liquid inlet is formed in the swirler; the bottom of the swirler is connected with a centrifugal separator, a liquid outlet of the centrifugal separator is connected with the top of the swirler and then connected with a buffer tank, and the buffer tank is connected with a plate-and-frame filter press through a filtering centrifugal pump; a liquid outlet of the plate-and-frame filter press is connected with a filtrate tank which is connected with a liquid storage tank in the bottom of an absorbing tower through an absorbing liquid return pump. The impurity elimination module is additionally arranged in an original ammonia-process desulfurization system, so that the defect in an original technological process can be eliminated, and the reliability of an ammonia-process desulfurization device can be enhanced.

Description

A kind of impurity is removed module
Technical field
The utility model relates to a kind of device that prevents dust accumulation adopting in Application of Ammonia Process Flue Gas Desulphurization To Coal-fired, belongs to environmental chemical engineering technical field.
Background technology
Coal burning flue gas desulfurization is one of measure of Air Pollution prevention and control, and the ammonia process of desulfurization is take ammonia SO in desulfurizing agent recovered flue gas 2the technical process of extracting sulfuric acid ammonium, this sulfur method is through constantly making great efforts to have built various types of devices, and obtained ammonium sulfate product, but in technological process, also there are some problems, for example, in absorb-oxidation-concentrated-integrated absorption tower of crystallization, through operation in three months, absorption liquid thickening, viscosity increases, desulfuration efficiency progressively declines, and final ammonium sulfate can not crystallize out, and now takes to upgrade absorption liquid, after original absorption liquid is all discharged, again add ammonia and drive to move.Analyzing above-mentioned phenomenon, is due to subparticle dust in flue gas, can when separating ammonium sulfate, not remove, thereby due to progressively accumulating in absorption liquid.
What time following existing desulfuration absorbing tower design must be considered:
1, subparticle dust
Dust granules approximately 1~200 μ m that coal-burning boiler produces, the particle that is generally greater than 20 μ m has obvious sinking speed, and the dust separation of subparticle 0.1~10 μ m wants difficult, therefore to the liquid-solid separation of subparticle, will select relevant device.
2, liquid-solid separation
The ammonia process of desulfurization generates ammonium sulfate in absorption tower, then after cyclone is concentrated, enters centrifuge and isolates ammonium sulfate.In industrial centrifugal machine, because ammonium sulfate is greater than 20 μ m, therefore ammonium sulfate is easily separation with absorption liquid, at this moment oarse-grained dust is trapped within byproduct of ammonium sulfate, but be less than the subparticle of 10 μ m through centrifuge, return to absorption tower liquid storage section together with absorption liquid, then be mixed and made into the SO in absorption liquid circulation absorption flue gas with ammonia 2.Through operation after a while, subparticle is constantly accumulation in absorption liquid, finally makes absorption liquid thickening, and desulfuration efficiency reduces.
Industrial liquid-solid separation equipment, fine grained suspension adopts filter press, and coarse granule suspension adopts vacuum filter, explanation will be removed subparticle and should be selected plate and frame filter press thus.
3, prevent the deposition of dust in absorption tower
Prevent the accumulation of dust, except selecting the method that removes, also will prevent the deposition of dust in absorbing tower bottom in absorption tower, this deposition makes mud at the bottom of tower up to 1~2 meter, has had a strong impact on the operation on absorption tower.
The deposition that prevents dust in absorption tower can adopt mechanical agitation or hydraulic mixing.
Summary of the invention
To be solved in the utility model is in existing Application of Ammonia Process Flue Gas Desulphurization To Coal-fired process, the easily technical problem of accumulation of dust in absorption liquid.
In order to address the above problem, the utility model provides a kind of impurity to remove module, it is characterized in that, comprise cyclone, cyclone is provided with absorption liquid entrance; The bottom of cyclone is connected with centrifugal separator, after the liquid outlet of centrifugal separator is connected with the top of cyclone, is connected with dashpot, and dashpot is connected with plate compression device by filtering centrifugal pump; The liquid outlet of plate compression device is connected with filtrate receiver, and filtrate receiver returns to pump by absorption liquid and is connected with reservoir at the bottom of absorbing tower.
Preferably, the solid outlet place of described centrifugal separator is provided with drying machine.
The advantage that the impurity that the utility model provides is removed module is to set up impurity removing module in original ammonia method desulfurizing system, to eliminate the defect in former technological process, improves the reliability of ammonia desulfuration equipment.
Accompanying drawing explanation
The impurity that Fig. 1 provides for the utility model is removed the structural representation of module.
The specific embodiment
For the utility model is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described in detail below.
Embodiment
As shown in Figure 1, the impurity providing for the utility model is removed the structural representation of module, comprises cyclone C201, and cyclone C201 is provided with absorption liquid entrance A1; The bottom of cyclone C201 is connected with centrifugal separator S201, and the solid outlet of centrifugal separator S201 leads to warehouse B after connecting a drying machine D101.After the liquid outlet of centrifugal separator S201 is connected with the top of cyclone C201, be connected with dashpot V201, dashpot V201 is connected with plate compression device PF201 by filtering centrifugal pump P201.The solid outlet of plate compression device PF201 leads to the C of dust accumulation place, and liquid outlet is connected with filtrate receiver V202, and filtrate receiver V202 returns to pump P202 by absorption liquid and is connected with reservoir A2 at the bottom of absorbing tower.
Filter centrifugal pump P201, can carry the slurries of 5~10% solid contents, its lift is 60m.
Plate and frame filter press, filter pressure 0.6MPa, filter area is calculated with the thick 5-10mm of filter cake, and material adopts anti-chlorine ion corrosion material.
The absorption liquid entrance A1 of cyclone C201 is connected with reservoir at the bottom of absorbing tower, absorption liquid enters cyclone C201 thickening by absorption liquid entrance A1, underflow liquid is delivered to centrifugal separator S201 and is separated ammonium sulfate, it is dry that ammonium sulfate enters drier D101 by the solid outlet of centrifugal separator S201, and the desulfurizing byproduct obtaining send warehouse B.Cyclone C201 overflowing liquid and centrifugal separator S201 filtrate are delivered to dashpot V201, dashpot V201 is provided with stirring, the mixed liquor that dashpot V201 flows out is sent into plate and frame filter press PF201 press filtration by filtering centrifugal pump P201, filtrate flows into filtrate receiver V202, by absorption liquid, return to pump P202 and send reservoir A2 at the bottom of absorbing tower back to, the filter cake that plate and frame filter press forms is transported to the C of dust accumulation place, then by truck, is transported.
Plate and frame filter press PF201 moves under 0.6MPa, to reach, can remove by filter subparticle, because the solids content of dust in the solution filtering is low, and the solution amount of processing is larger, so the thickness of the filter cake that plate and frame filter press PF201 makes is selected 5~10mm, to improve the rate of filtration, if solids content is low, solution amount is excessive, the a part of solution of each processing, as long as it is approaching that flue gas is brought Dust Capacity in Dust Capacity and the filter cake on absorption tower into, just eliminated the accumulation of dust in the absorption liquid of absorption tower, in addition, if because dust is fine, affect the rate of filtration, can in dashpot, suitably add filter aid.
In order to prevent that dust from, in bottom, absorption tower deposition, can arrange hydraulic mixing in absorption tower liquid storage section, pump flow should be more than or equal to 2 meters of high liquid measures in tower.

Claims (2)

1. impurity is removed a module, it is characterized in that, comprise cyclone (C201), cyclone (C201) is provided with absorption liquid entrance (A1); The bottom of cyclone (C201) is connected with centrifugal separator (S201), after the liquid outlet of centrifugal separator (S201) is connected with the top of cyclone (C201), be connected with dashpot (V201), dashpot (V201) is connected with plate compression device (PF201) by filtering centrifugal pump (P201); The liquid outlet of plate compression device (PF201) is connected with filtrate receiver (V202), and filtrate receiver (V202) returns to pump (P202) by absorption liquid and is connected with reservoir at the bottom of absorbing tower (A2).
2. impurity as claimed in claim 1 is removed module, it is characterized in that, the solid outlet place of described centrifugal separator (S201) is provided with drying machine (D101).
CN201320687070.XU 2013-11-01 2013-11-01 Impurity elimination module Expired - Fee Related CN203556204U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320687070.XU CN203556204U (en) 2013-11-01 2013-11-01 Impurity elimination module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320687070.XU CN203556204U (en) 2013-11-01 2013-11-01 Impurity elimination module

Publications (1)

Publication Number Publication Date
CN203556204U true CN203556204U (en) 2014-04-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201320687070.XU Expired - Fee Related CN203556204U (en) 2013-11-01 2013-11-01 Impurity elimination module

Country Status (1)

Country Link
CN (1) CN203556204U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104028041A (en) * 2014-07-04 2014-09-10 中国海诚工程科技股份有限公司 Micro-fine particle liquid and solid separation device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104028041A (en) * 2014-07-04 2014-09-10 中国海诚工程科技股份有限公司 Micro-fine particle liquid and solid separation device
CN104028041B (en) * 2014-07-04 2015-11-25 中国海诚工程科技股份有限公司 A kind of subparticle liquid-solid separation device

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GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140423

Termination date: 20191101