CN106178896A - The desulfurizer of a kind of ammonia circulation utilization and method - Google Patents

The desulfurizer of a kind of ammonia circulation utilization and method Download PDF

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Publication number
CN106178896A
CN106178896A CN201610730990.3A CN201610730990A CN106178896A CN 106178896 A CN106178896 A CN 106178896A CN 201610730990 A CN201610730990 A CN 201610730990A CN 106178896 A CN106178896 A CN 106178896A
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CN
China
Prior art keywords
ammonia
desulfurizing tower
regeneration tank
underflow
tower
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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.)
Pending
Application number
CN201610730990.3A
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Chinese (zh)
Inventor
郭宏新
李奇
刘丰
张贤福
徐威
高原原
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Jiangsu Sunpower Technology Co Ltd
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Jiangsu Sunpower Technology Co Ltd
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Priority to CN201610730990.3A priority Critical patent/CN106178896A/en
Publication of CN106178896A publication Critical patent/CN106178896A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • B01D53/50Sulfur oxides
    • B01D53/501Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/502Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • B01D53/50Sulfur oxides
    • B01D53/501Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • B01D53/504Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/96Regeneration, reactivation or recycling of reactants
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2251/00Reactants
    • B01D2251/20Reductants
    • B01D2251/206Ammonium compounds
    • B01D2251/2062Ammonia
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2258/00Sources of waste gases
    • B01D2258/02Other waste gases
    • B01D2258/0283Flue gases

Abstract

nullThe invention discloses desulfurizer and method that a kind of ammonia circulation utilizes,The desulfurizer that a kind of ammonia circulation utilizes includes the desulfurizing tower being provided with smoke inlet and chimney,It is sequentially provided with from top to bottom except mist layer inside desulfurizing tower、Scrubber layer、Absorb spraying layer and gas distributor,Ammonia regenerative system it is additionally provided with outside described desulfurizing tower,Ammonia regenerative system includes and the regeneration tank being connected at the bottom of desulfurizing tower tower,The bottom of regeneration tank is connected by underflow pipeline oxidation trough,The bottom of oxidation trough connects swirl concentrator,The top of swirl concentrator is connected by overflow pipe digestive shelf,Digestive shelf is passed in described regeneration tank,The bottom of described swirl concentrator connects drying machine,Filtrate port bottom drying machine is connected with described regeneration tank,It is also associated with sedimentation tank on described regeneration tank,Sedimentation tank is connected by pipeline the circulating slot being passed in described absorption spraying layer.The present invention can make to realize absorbent ammonia circulation and utilize, and just significantly reduces the operating cost of the ammonia process of desulfurization.

Description

The desulfurizer of a kind of ammonia circulation utilization and method
Technical field
The invention belongs to waste gas pollution control and treatment field, for processing the sour gas such as sulfur dioxide in boiler smoke, concrete Say and relate to a kind of desulfurizer and the method that ammonia circulation utilizes.
Background technology
Air is the most basic environmental key-element that the mankind depend on for existence, but is as human production activity and social activity Increase, particularly a large amount of fuel combustions, industrial waste gas and the discharge of vehicle exhaust, make atmosphere quality increasingly deteriorate.Respectively In class atmosphere pollution, it is most important that the pollution that fire coal causes.The coal-fired sulfur dioxide produced and nitrogen oxides pollution control It it is the most urgent task in current China's Air Pollution Control field.The controlling soil moist of sulfur dioxide has three at present: de-before burning Desulfurization (i.e. flue gas desulfurization FGD) after desulfurization in sulfur, burning, burning.Flue gas desulfurization at present is considered as that control sulfur dioxide is the most capable Effective approach.Flue gas desulfurization is mainly wet method and dry method/semidry method.Wet fuel gas desulfurizing technology according to selected desulfurizing agent, Desulphurization mechanism difference is broadly divided into following several: limestone/gypsum method, Dual alkali, ammonia process, magnesium processes, seawater method.Wherein ammonia process with It is swift in response, without fouling and clogging, invest the feature such as low and become the developing direction of current wet desulphurization.But current ammonia process takes off Sulfur technique absorbent ammonia price is higher, byproduct of ammonium sulfate is at a discount or selling price is low, and this becomes ammonia process of desulfurization application Important restriction factor.
Summary of the invention
It is an object of the invention to provide one can make desulfurizing agent ammonia realize recycle, operating cost is low, adaptability The desulfurizer of strong ammonia circulation utilization and method.
The present invention adopts the following technical scheme that the desulfurizer that a kind of ammonia circulation utilizes, including be provided with smoke inlet and The desulfurizing tower of chimney, is sequentially provided with except mist layer, scrubber layer, absorption spraying layer and gas distributor from top to bottom inside desulfurizing tower, Being additionally provided with ammonia regenerative system outside described desulfurizing tower, ammonia regenerative system includes and the regeneration tank being connected at the bottom of desulfurizing tower tower, regeneration The bottom of groove is connected by underflow pipeline oxidation trough, and the bottom of oxidation trough connects swirl concentrator, swirl concentrator upper Portion is connected by overflow pipe has digestive shelf, digestive shelf to be passed in described regeneration tank, and the bottom of described swirl concentrator connects to be had Drying machine, the filtrate port bottom drying machine is connected with described regeneration tank, and described regeneration tank is also associated with sedimentation tank, and sedimentation tank leads to Piping connects the circulating slot being passed in described absorption spraying layer.
Between absorption spraying layer and gas distributor, it is provided with concentration spraying layer, outside described desulfurizing tower in described desulfurizing tower Being provided with from the concentrated solution circulating line being passed into described concentration spraying layer at the bottom of tower, concentrated solution circulating line is provided with concentrated solution circulation Pump.
Described gas distributor is twisted tube assembly, and twisted tube assembly includes being full of the distortion of cross section in whole desulfurizing tower Pipe.
Being provided with air sparger in described oxidation trough, described air sparger connects aerator.
Described drying machine is disc type vacuum drier.
Described underflow pipeline is provided with underflow pump, and the connection pipeline between described oxidation trough and swirl concentrator is provided with stone Cream pump.
The sulfur method that a kind of ammonia circulation utilizes, comprises the following steps: flue gas enters in desulfurizing tower, sequentially passes through gas Distributor, absorb spraying layer, scrubber layer and except mist layer, inversely contact with absorbent ammonia, react, sulfur dioxide in flue gas Discharging from chimney after removing, the sulfur method that described ammonia circulation utilizes is further comprising the steps of: (1) absorbent ammonia and flue gas In the reverse haptoreaction of sulfur dioxide after the bisulfite ammonium salt solution that generates fall at the bottom of desulfurizing tower tower, then from desulfurizing tower tower underflow Enter regeneration tank;(2) underflow bottom regeneration tank being squeezed into oxidation trough, delivered to by air in oxidation trough, the oxygen in air is by Asia Calcium sulfate is oxidized to calcium sulphate dihydrate;(3) underflow bottom oxidation trough being driven in swirl concentrator, slip is condensed to contain Gu rate 30% supersaturated solution;(4) Gypsum Fibrosum will be further dried in the supersaturated solution feeding drying machine in previous step, will be true Bottom empty drying machine, filtrate is back to regeneration tank;(5) overflowing liquid at swirl concentrator top is back to digestive shelf, by quick lime In addition digestive shelf, the overflowing liquid with swirl concentrator top reacts generation regenerative agent Calx, and reacted Calx is supplemented in Regeneration tank, desulfurizing agent ammonia is regenerated;(6) in regeneration tank regeneration desulfurizing agent ammonia through precipitation, filter and supplement liquefied ammonia or After ammonia regulation pH value, it is passed into desulfurizing tower and absorbs recycling in spraying layer.
The sulfur method that described ammonia circulation utilizes is further comprising the steps of: absorbent ammonia and the sulfur dioxide in flue gas After reverse haptoreaction, fall into bottom desulfurizing tower, be re-fed into concentrated solution spraying layer and be circulated absorption reaction, desulfurizing tower with flue gas The concentration of bottom solution sulfite hydrogen ammonium is improved, then enters regeneration tank from desulfurizing tower underflow.
By underflow pump, the underflow bottom regeneration tank is squeezed into oxidation trough, by Gypsum Fibrosum pump, the underflow bottom oxidation trough is beaten Enter in swirl concentrator.
In described step (4), the moisture content of the Gypsum Fibrosum that supersaturated solution is dried in drying machine is less than 10%.
Operationally, flue gas enters in desulfurizing tower the present invention through the smoke inlet of desulfurizing tower, sequentially pass through gas distributor, Concentrate spraying layer, absorb spraying layer, scrubber layer and remove mist layer, inversely contact with concentrated solution and desulfurizing agent and react, remove two Sulfur oxide, discharges from chimney.After the reverse haptoreaction of sulfur dioxide in absorbent ammonia and flue gas, fall into bottom desulfurizing tower, Concentrated solution spraying layer sent into by concentrated liquid circulating pump, is circulated absorption reaction, the concentration of solution sulfite hydrogen ammonium with flue gas Being improved, then enter regeneration tank from desulfurizing tower underflow, the slaked lime slurry come with digestive shelf reacts, and desulfurizing agent ammonia obtains again Raw, use through precipitation and supplementary liquefied ammonia or ammonia regulation pH value Posterior circle.Regenerative agent Calx is by quick lime addition being disappeared In change groove, the overflowing liquid with swirl concentrator top reacts generation, and reacted Calx is supplemented in regeneration tank.Bottom regeneration tank Underflow squeeze into oxidation trough by underflow pump, air is delivered in oxidation trough by aerator, by air sparger, air is uniform Feeding underflow in, calcium sulfite oxidation is become calcium sulphate dihydrate (Gypsum Fibrosum) by the oxygen in air.The bottom underflow of oxidation trough is led to Crossing Gypsum Fibrosum pump and squeeze in swirl concentrator, slip is condensed to solid content 30% supersaturated solution, and this supersaturated solution sends into disk Gypsum Fibrosum that moisture content be less than 10% is further dried in formula vacuum drier.The overflowing liquid at swirl concentrator top is back to disappear Changing groove, disk vacuum drying motor spindle filtrate is back to regeneration tank.For preventing flue gas bias current in desulfurizing tower, at desulfurizing tower flue gas Entrance top adds twisted tube gas distributor, and this gas distributor uses twisted tube assembly, by branched distortion bank of tubes Row form, and are full of cross section in whole desulfurizing tower.After this distributor, there is strong spin disturbance in flue gas, extends flue gas With the time of contact of absorbent, desulfuration efficiency is largely increased.
The theoretical basis of the present invention:
(1) reaction is absorbed
2NH3+H2O+SO2→(NH4)2SO3
(NH4)2SO3+SO2+H2O→2NH4HSO3
NH3+H2O+SO2→NH4HSO3
(2) regenerative response:
CaO+H2O→Ca(OH)2
2 NH4HSO3+ Ca(OH)2→(NH4)2SO3+CaSO3·1/2H2O+3/2H2O
(NH4)2SO3+ Ca(OH)2+1/2 H2O→2 NH3+ H2O+ CaSO3·1/2H2O
(3) oxidation reaction:
2CaSO3·1/2H2O+3H2O+O2→2CaSO4·2 H2O
The present invention, than prior art, has following remarkable advantage: one is that absorbent ammonia circulation utilizes, the restriction ammonia process of desulfurization Matter of utmost importance is exactly that absorbent ammonia price is higher, and absorbent achieves and recycles, and just significantly reduces the fortune of the ammonia process of desulfurization Row cost;Two is the CaSO of regeneration3Precipitation the most in a device, therefore will not produce fouling and clogging in device with flue; Three is side-product CaSO4·2H2O stable performance, to environment non-secondary pollution, can do building materials or industrial raw materials, and it is convenient to dispose. Using the present invention, the ammonia that price is higher is recycled, it is only necessary to supplement a small amount of consumption, and device is less scaling, blocking, regeneration Agent Calx is cheap, and buying is convenient, and by-product Gypsum Fibrosum is disposed convenient, and the by-product ammonium sulfate of the ammonia process of desulfurization, make nitrogenous fertilizer and contain Nitrogen quantity is low, easily makes the hardening soil, and often sales resistance or price are the lowest, it may be said that the present invention has had the ammonia process of desulfurization and Calx concurrently The advantage of stone/gypsum desulfurization.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of embodiment of the desulfurizer that ammonia circulation utilizes;
Fig. 2 is the structural representation of twisted tube distributor in Fig. 1.
Detailed description of the invention
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
The structure of a kind of embodiment of the desulfurizer that ammonia circulation of the present invention utilizes is as it is shown in figure 1, it includes being provided with cigarette The desulfurizing tower 2 of gas entrance 8 and chimney 1, desulfurizing tower (2) is internal to be sequentially provided with from top to bottom except mist layer 3, scrubber layer 4, absorption spray Layer 5 and gas distributor 7, be provided with concentration spraying layer 8 between absorption spraying layer 5 and gas distributor 7 in described desulfurizing tower, Described desulfurizing tower 2 is externally provided with from the concentrated solution circulating line being passed into described concentration spraying layer 8 at the bottom of tower, on concentrated solution circulating line It is provided with concentrated solution circulating pump 9.Being additionally provided with ammonia regenerative system outside described desulfurizing tower 2, ammonia regenerative system includes and desulfurizing tower tower The regeneration tank 10 that the end connects, the bottom of regeneration tank 10 is connected by underflow pipeline oxidation trough 15, and the bottom of oxidation trough 15 connects Having swirl concentrator 13, it is described that the top of swirl concentrator 13 has digestive shelf 12, digestive shelf 12 to be passed into by overflow pipe connection In regeneration tank 10, the bottom of described swirl concentrator 13 connects drying machine 14, the filtrate port bottom drying machine 14 with described again Raw groove 10 connects, and described regeneration tank 10 is also associated with sedimentation tank 11, and sedimentation tank 11 is passed into described suction by pipeline connection Receive the circulating slot 20 in spraying layer 5.Described gas distributor 7 is twisted tube assembly, and twisted tube assembly includes being full of whole desulfurization The twisted tube distributor of cross section in tower.It is provided with air sparger 16 in described oxidation trough, described air sparger 16 connects There is aerator 18.Described drying machine 14 is disc type vacuum drier.Described underflow pipeline is provided with underflow pump 19, described oxidation Connection pipeline between groove and swirl concentrator is provided with Gypsum Fibrosum pump 17.
Operationally, flue gas enters in desulfurizing tower through the smoke inlet 8 of desulfurizing tower 2 the present embodiment, sequentially passes through twisted tube Gas distributor 7, concentrate spraying layer 6, absorb spraying layer 5, scrubber layer 4 and except mist layer 3, inversely connect with concentrated solution and desulfurizing agent Touch, react, remove sulfur dioxide, discharge from chimney 1.Absorbent ammonia and the reverse haptoreaction of sulfur dioxide in flue gas After, fall into bottom desulfurizing tower, concentrated liquid circulating pump 9 is sent into concentrated solution spraying layer 6 and is circulated absorption reaction, solution with flue gas The concentration of sulfite hydrogen ammonium is improved, then enters regeneration tank 10 from desulfurizing tower underflow, sends out with the slaked lime slurry of digestive shelf 12 Raw reaction, desulfurizing agent ammonia is regenerated, and uses through precipitation and supplementary liquefied ammonia or ammonia regulation pH value Posterior circle.The ripe stone of regenerative agent Ash is to react generation, reacted ripe stone by quick lime adds in digestive shelf 12 overflowing liquid with swirl concentrator 13 top Ash is supplemented in regeneration tank 10.Underflow bottom regeneration tank 10 squeezes into oxidation trough 15 by underflow pump 19, and air is sent by aerator 18 To oxidation trough, being sent into uniformly in underflow by air by air sparger 16, the oxygen in air is by calcium sulfite oxidation Become calcium sulfate.The bottom underflow of oxidation trough 15 is squeezed in swirl concentrator 13 by Gypsum Fibrosum pump 17, and slip is condensed to solid content 30% supersaturated solution, is further dried into moisture content in this supersaturated solution feeding disc type vacuum drier 14 and is less than 10% Gypsum Fibrosum.These Gypsum Fibrosum may be used for building materials or industrial raw materials, or directly fills.The overflowing liquid at swirl concentrator 13 top returns Being back to digestive shelf 12, bottom disk vacuum drier 14, filtrate is back to regeneration tank 10.The twisted tube gas on smoke inlet top Distributor 7 is to be formed by the arrangement of multiple twisted tubes, is full of cross section in whole tower, plays uniform flue gas and make flue gas spin The effect of disturbance, extends the time of contact of flue gas and absorbent, and desulfuration efficiency is largely increased.
The embodiment of the sulfur method that ammonia circulation of the present invention utilizes, comprises the following steps: flue gas enters in desulfurizing tower, depends on Secondary through gas distributor, absorb spraying layer, scrubber layer and except mist layer, inversely contact with absorbent ammonia, react, flue gas Middle sulfur dioxide is discharged from chimney after removing, and the sulfur method that described ammonia circulation utilizes is further comprising the steps of: (1) absorbent The bisulfite ammonium salt solution generated after the reverse haptoreaction of sulfur dioxide in ammonia and flue gas falls at the bottom of desulfurizing tower tower, then from de- Sulfur tower tower underflow enters regeneration tank;(2) by underflow pump, the underflow bottom regeneration tank is squeezed into oxidation trough, air is delivered to oxidation trough In, calcium sulfite oxidation is become calcium sulphate dihydrate by the oxygen in air;(3) by Gypsum Fibrosum pump, the underflow bottom oxidation trough is squeezed into In swirl concentrator, slip is condensed to solid content 30% supersaturated solution;(4) supersaturated solution in previous step is sent into Gypsum Fibrosum that moisture content be less than 10% is further dried in drying machine, vacuum drying motor spindle filtrate is back to regeneration tank;(5) The overflowing liquid at swirl concentrator top is back to digestive shelf, quick lime is added in digestive shelf with swirl concentrator top overflow Flow liquid reaction generates regenerative agent Calx, and reacted Calx is supplemented in regeneration tank, and desulfurizing agent ammonia is regenerated;(6) again In raw groove, the desulfurizing agent ammonia of regeneration is after precipitating, filter and supplement liquefied ammonia or ammonia regulation pH value, is passed into desulfurizing tower and absorbs Spraying layer recycles.
The sulfur method that described ammonia circulation utilizes is further comprising the steps of: absorbent ammonia and the sulfur dioxide in flue gas After reverse haptoreaction, fall into bottom desulfurizing tower, be re-fed into concentrated solution spraying layer and be circulated absorption reaction, desulfurizing tower with flue gas The concentration of bottom solution sulfite hydrogen ammonium is improved, then enters regeneration tank from desulfurizing tower underflow.

Claims (10)

1. the desulfurizer that ammonia circulation utilizes, including being provided with the desulfurizing tower (2) of smoke inlet (8) and chimney (1), desulfurization Tower (2) is internal to be sequentially provided with except mist layer (3), scrubber layer (4), absorption spraying layer (5) and gas distributor (7) from top to bottom, its Being characterised by: be additionally provided with ammonia regenerative system outside described desulfurizing tower (2), ammonia regenerative system includes and is connected at the bottom of desulfurizing tower tower Regeneration tank (10), the bottom of regeneration tank (10) is connected by underflow pipeline oxidation trough (15), and the bottom of oxidation trough (15) connects Having swirl concentrator (13), the top of swirl concentrator (13) is connected by overflow pipe digestive shelf (12), and digestive shelf (12) leads to Entering in described regeneration tank (10), the bottom of described swirl concentrator (13) connects drying machine (14), drying machine (14) bottom Filtrate port be connected with described regeneration tank (10), described regeneration tank (10) is also associated with sedimentation tank (11), sedimentation tank (11) lead to Piping connects the circulating slot (20) being passed in described absorption spraying layer (5).
The desulfurizer that ammonia circulation the most according to claim 1 utilizes, it is characterised in that: it is positioned at suction in described desulfurizing tower Receiving and be provided with concentration spraying layer (8) between spraying layer (5) and gas distributor (7), described desulfurizing tower (2) is externally provided with and is passed through from the bottom of tower To the concentrated solution circulating line of described concentration spraying layer (8), concentrated solution circulating line is provided with concentrated solution circulating pump (9).
The desulfurizer that ammonia circulation the most according to claim 1 utilizes, it is characterised in that: described gas distributor (7) For twisted tube assembly, twisted tube assembly includes being full of the twisted tube of cross section in whole desulfurizing tower.
The desulfurizer that ammonia circulation the most according to claim 1 utilizes, it is characterised in that: it is provided with sky in described oxidation trough Gas distributor (16), the upper connection of described air sparger (16) has aerator (18).
The desulfurizer that ammonia circulation the most according to claim 1 utilizes, it is characterised in that: described drying machine (14) is circle Disc type vacuum drier.
The desulfurizer that ammonia circulation the most according to claim 1 utilizes, it is characterised in that: described underflow pipeline is provided with Underflow pump (19), the connection pipeline between described oxidation trough and swirl concentrator is provided with Gypsum Fibrosum pump (17).
7. the sulfur method that ammonia circulation utilizes, comprises the following steps: flue gas enters in desulfurizing tower, sequentially passes through gas and divides Cloth device, absorbing spraying layer, scrubber layer and except mist layer, inversely contact with absorbent ammonia, react, sulfur dioxide in flue gas is removed Discharge from chimney after going, it is characterised in that the sulfur method that described ammonia circulation utilizes is further comprising the steps of: (1) absorbent The bisulfite ammonium salt solution generated after the reverse haptoreaction of sulfur dioxide in ammonia and flue gas falls at the bottom of desulfurizing tower tower, then from de- Sulfur tower tower underflow enters regeneration tank;(2) underflow bottom regeneration tank is squeezed into oxidation trough, air is delivered in oxidation trough, in air Oxygen calcium sulfite oxidation is become calcium sulphate dihydrate;(3) underflow bottom oxidation trough is driven in swirl concentrator, slip It is condensed to solid content 30% supersaturated solution;(4) will be further dried in the supersaturated solution feeding drying machine in previous step Gypsum Fibrosum, is back to regeneration tank by vacuum drying motor spindle filtrate;(5) overflowing liquid at swirl concentrator top is back to digestion Groove, adds quick lime in digestive shelf the overflowing liquid with swirl concentrator top and reacts generation regenerative agent Calx, reacted Calx is supplemented in regeneration tank, and desulfurizing agent ammonia is regenerated;(6) the desulfurizing agent ammonia regenerated in regeneration tank is through precipitation, filtration After regulating pH value with supplementary liquefied ammonia or ammonia, it is passed into desulfurizing tower and absorbs recycling in spraying layer.
The sulfur method that ammonia circulation the most according to claim 7 utilizes, it is characterised in that: described ammonia circulation utilizes Sulfur method is further comprising the steps of: after the reverse haptoreaction of sulfur dioxide in absorbent ammonia and flue gas, fall into desulfurizing tower Bottom, is re-fed into concentrated solution spraying layer and flue gas and is circulated absorption reaction, desulfurizing tower bottom solution sulfite hydrogen ammonium dense Degree is improved, then enters regeneration tank from desulfurizing tower underflow.
The sulfur method that ammonia circulation the most according to claim 7 utilizes, it is characterised in that: by underflow pump by regeneration tank The underflow of bottom squeezes into oxidation trough, the underflow bottom oxidation trough is driven in swirl concentrator by Gypsum Fibrosum pump.
The sulfur method that ammonia circulation the most according to claim 7 utilizes, it is characterised in that: in described step (4), mistake The moisture content of the Gypsum Fibrosum that saturated solution is dried in drying machine is less than 10%.
CN201610730990.3A 2016-08-26 2016-08-26 The desulfurizer of a kind of ammonia circulation utilization and method Pending CN106178896A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107281924A (en) * 2017-08-09 2017-10-24 安徽理工大学 A kind of improved ammonia desulfurizing process and system
CN108786398A (en) * 2017-05-02 2018-11-13 中国石油化工股份有限公司 Flue gas desulfurization regenerates integrated tower and Regeneratable wet fuel gas desulfurizing method
CN109569222A (en) * 2018-12-21 2019-04-05 张君宇 The ammonia regeneration utilization process of the ammonia process of desulfurization

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Publication number Priority date Publication date Assignee Title
US6106595A (en) * 1996-04-30 2000-08-22 Spencer; Dwain F. Methods of selectively separating CO2 from a multicomponent gaseous stream
CN1712113A (en) * 2005-06-03 2005-12-28 吴金泉 Smoke desulfidation from amino bialkali method
CN101091875A (en) * 2007-04-24 2007-12-26 颜松林 Method for recovering ammonia from by-product of ammonia process of desulfurization for boiler flue gas
CN101829489A (en) * 2010-05-07 2010-09-15 镇江金锐环保设备有限公司 Ammonia-plaster mode desulphurization system
CN105032173A (en) * 2015-04-25 2015-11-11 张少篪 Device and process of ammonia-soda-process combined desulfurization and denitrification

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6106595A (en) * 1996-04-30 2000-08-22 Spencer; Dwain F. Methods of selectively separating CO2 from a multicomponent gaseous stream
CN1712113A (en) * 2005-06-03 2005-12-28 吴金泉 Smoke desulfidation from amino bialkali method
CN101091875A (en) * 2007-04-24 2007-12-26 颜松林 Method for recovering ammonia from by-product of ammonia process of desulfurization for boiler flue gas
CN101829489A (en) * 2010-05-07 2010-09-15 镇江金锐环保设备有限公司 Ammonia-plaster mode desulphurization system
CN105032173A (en) * 2015-04-25 2015-11-11 张少篪 Device and process of ammonia-soda-process combined desulfurization and denitrification

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108786398A (en) * 2017-05-02 2018-11-13 中国石油化工股份有限公司 Flue gas desulfurization regenerates integrated tower and Regeneratable wet fuel gas desulfurizing method
CN107281924A (en) * 2017-08-09 2017-10-24 安徽理工大学 A kind of improved ammonia desulfurizing process and system
CN109569222A (en) * 2018-12-21 2019-04-05 张君宇 The ammonia regeneration utilization process of the ammonia process of desulfurization

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