CN105311937A - Method of producing ammonium sulfate through flue gas desulfurization - Google Patents
Method of producing ammonium sulfate through flue gas desulfurization Download PDFInfo
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- CN105311937A CN105311937A CN201410255295.7A CN201410255295A CN105311937A CN 105311937 A CN105311937 A CN 105311937A CN 201410255295 A CN201410255295 A CN 201410255295A CN 105311937 A CN105311937 A CN 105311937A
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- ammonium sulfate
- flue gas
- flue
- cell body
- metal cell
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/141—Feedstock
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Abstract
The invention discloses a method of producing ammonium sulfate through flue gas desulfurization, which comprises the following steps: (1) feeding high-temperature flue gas into a sieve plate desulfurization column to enable the flue gas to be fully convected with ammonia water sprayed from the top of the sieve plate desulfurization column, wherein the SO2 is reacted with NH3 in the ammonia water to generate an ammonium sulfate water solution, and discharging tail gas from the top of the colulmn; and (2) feeding the ammonium sulfate water solution into a metal trough body, heating the metal trough body through the high-temperature flue gas to evaporate the water in the ammonium sulfate water solution to concentrate and crystallize the water solution to generate ammonium sulfate solid, wherein a spray liquid is fed into the metal trough body and then is evaporated and concentrated under heating by the high-temperature flue gas, thereby producing ammonium sulfate crystal. A flue is in a snake-like shape so that contact area between the flue and the metal trough body is increased, thereby improving heat utilization. The flue is built by concrete, thereby achieving heat preservation and preventing heat dissipation from the flue gas.
Description
Technical field
The invention belongs to flue gas desulfurization field, be specifically related to a kind of method that ammonium sulfate is produced in flue gas desulfurization.
Background technology
Industrial waste gas is carried out to the equipment of desulfurization process, in the majority with tower equipment, be desulfurizing tower.Large desulfurization device for Flue Gas Desulphurization for Coal-burning Power Plant is called desulfurizing tower, and is called desulfurizing dust-collector for the small-sized desulfation dust-extraction device of coal-burned industrial boiler and de-suphur of kiln fume more.In desulfurizing tower and desulfurization dirt device, application alkali liquid washing is containing SO
2flue gas, to the SO in flue gas
2carry out chemical absorbing.
Fume desulfurizing tower operation principle
SO
2absorption cleaning process, process be low concentration SO
2flue gas, exhaust gas volumn is considerable, requires continuously high-efficient purification flue gas in moment.Thus, SO
2the chemical reaction participated in should be the reaction that is exceedingly fast, and in their film, transformation ratio value comparatively greatly, is reacted and occurred in film, therefore select gas phase is continuous phase, turbulent extent is high, boundary is larger absorption tower as desulfurizing tower and desulfurizing dust-collector proper.Usually, spray column, packed tower, spray tower, plate column, venturi absorption tower etc. can meet these requirements.Wherein, spray column is one of the most widely used desulfurizing tower type, and it is simple that spray column has structure, and technical maturity reliably a little, is widely used in large power plant, middle-size and small-size low-sulfur smoke gas treatment; For high-sulfur smoke gas treatment, current coloured industry is based on Pneumatic emulsifying desulfurizing tower, Multi-layer sprinkling tower etc.
When using board-like spray column to carry out desulfurization, the flue gas after desulfurization is discharged from tower top, spray liquid ammoniacal liquor and SO
2reaction generates ammonium sulfate solution, if will reclaim ammonium sulfate, generally must carry out evaporating, concentrating and crystallizing, this process energy consumption is high, the serious cost increasing desulfurization.
Summary of the invention
The object of the invention is to provide a kind of method that ammonium sulfate is produced in flue gas desulfurization, solves existing process energy consumption high, the serious problem increasing the cost of desulfurization.
Technical scheme of the present invention is: the method for ammonium sulfate is produced in a kind of flue gas desulfurization, comprises the steps:
(1) high-temperature flue gas enters sieve plate desulfurizing tower and carries out abundant convection current, SO with the ammoniacal liquor that sprays from sieve plate desulfurizing tower top
2with the NH in ammoniacal liquor
3reaction, generates ammonium sulfate solution; Tail gas is discharged from tower top;
(2) ammonium sulfate solution flows into metal cell body, and metal cell body is heated by high-temperature flue gas, makes the water evaporates in ammonium sulfate solution, concentrated, crystallization generation ammonium sulfate solids.
Further, the method that described metal cell body is undertaken heating by high-temperature flue gas for arrange snakelike flue bottom metal cell body, and described snakelike flue is built into by concrete, side opening on snake pipe, and described metal cell body sealing is fixed on snakelike flue.
The present invention compared with prior art tool has the following advantages:
Spray liquid enters in metal cell body, carries out evaporation and concentration, thus obtain ammonia sulfate crystal under the heating of high-temperature flue gas.Flue is snakelike, can strengthen the contact area with metal cell body, improves heat utilization.Snakelike flue adopts concrete to be built into, and has insulation effect, prevents flue gas heat from leaking.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the plan structure schematic diagram of flue.
In figure, Reference numeral is: 1-sieve plate desulfurizing tower, the snakelike flue of 2-, 3-spray equipment, 4-exhanst gas outlet, and 5-spray liquid exports, 6-gas approach, 7-metal cell body.
Detailed description of the invention
A method for ammonium sulfate is produced in flue gas desulfurization, comprises the steps:
(1) high-temperature flue gas enters sieve plate desulfurizing tower and carries out abundant convection current, SO with the ammoniacal liquor that sprays from sieve plate desulfurizing tower top
2with the NH in ammoniacal liquor
3reaction, generates ammonium sulfate solution; Tail gas is discharged from tower top;
(2) ammonium sulfate solution flows into metal cell body, and metal cell body is heated by high-temperature flue gas, makes the water evaporates in ammonium sulfate solution, concentrated, crystallization generation ammonium sulfate solids.
The structure of flue gas desulphurization system is, comprise sieve plate desulfurizing tower 1, sieve plate desulfurizing tower 1 top is provided with spray equipment 3 and exhanst gas outlet 4, spray liquid outlet 5 and gas approach 6 is provided with bottom sieve plate desulfurizing tower 1, described gas approach 6 connects snakelike flue 2, snakelike flue 2 is provided with metal cell body 7, and described metal cell body 7 and spray liquid export 5 and are connected.
Spray liquid enters in metal cell body 7, carries out evaporation and concentration, thus obtain ammonia sulfate crystal under the heating of high-temperature flue gas.Snakelike flue 2 is snake pipe, can strengthen the contact area of flue gas and metal cell body 7, improves heat utilization.Snakelike flue 2 is built into by concrete, side opening on snakelike flue 2, and metal cell body 7 sealing is fixed on snakelike flue 2.Snakelike flue 2 adopts concrete to be built into, and has insulation effect, prevents flue gas heat from leaking.
The above embodiment only have expressed the detailed description of the invention of the application, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the application's protection domain.It should be pointed out that for the person of ordinary skill of the art, under the prerequisite not departing from technical scheme design, can also make some distortion and improvement, these all belong to the protection domain of the application.
Claims (2)
1. a method for ammonium sulfate is produced in flue gas desulfurization, it is characterized in that comprising the steps:
(1) high-temperature flue gas enters sieve plate desulfurizing tower and carries out abundant convection current, SO with the ammoniacal liquor that sprays from sieve plate desulfurizing tower top
2with the NH in ammoniacal liquor
3reaction, generates ammonium sulfate solution; Tail gas is discharged from tower top;
(2) ammonium sulfate solution flows into metal cell body, and metal cell body is heated by high-temperature flue gas, makes the water evaporates in ammonium sulfate solution, concentrated, crystallization generation ammonium sulfate solids.
2. the method for ammonium sulfate is produced in a kind of flue gas desulfurization according to claim 1, it is characterized in that, the method that described metal cell body is undertaken heating by high-temperature flue gas for arrange snakelike flue bottom metal cell body, described snakelike flue is built into by concrete, side opening on snake pipe, described metal cell body sealing is fixed on snakelike flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410255295.7A CN105311937A (en) | 2014-06-11 | 2014-06-11 | Method of producing ammonium sulfate through flue gas desulfurization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410255295.7A CN105311937A (en) | 2014-06-11 | 2014-06-11 | Method of producing ammonium sulfate through flue gas desulfurization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105311937A true CN105311937A (en) | 2016-02-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410255295.7A Pending CN105311937A (en) | 2014-06-11 | 2014-06-11 | Method of producing ammonium sulfate through flue gas desulfurization |
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| CN (1) | CN105311937A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105800648A (en) * | 2016-03-07 | 2016-07-27 | 攀钢集团攀枝花钢钒有限公司 | Application method of ammonium sulfate prepared from smelting offgas |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6063352A (en) * | 1997-07-19 | 2000-05-16 | Lurgi Lentjes Bischoff Gmbh | Method of removing sulfur dioxide from flue gases, especially power plant flue gases and flue gases from garbage incinerator plants |
| CN1751776A (en) * | 2004-09-22 | 2006-03-29 | 上海弗卡斯环保工程有限公司 | Ammonia type flue gas desulfurizing apparatus and its process |
| CN200998639Y (en) * | 2007-02-09 | 2008-01-02 | 李培生 | Concentrated crystallization and absorbed oxidation combined type ammonia process desulfuration tower |
| CN201492952U (en) * | 2009-08-12 | 2010-06-02 | 江苏新世纪江南环保有限公司 | Flue gas heat source heat pipe-type evaporation device of byproduct in ammonia process of flue gas desulfurization |
| US20100139488A1 (en) * | 2008-12-05 | 2010-06-10 | Marsulex Environmental Technologies Corporation | Flue gas scrubbing apparatus and process |
| CN201537456U (en) * | 2009-08-12 | 2010-08-04 | 江苏新世纪江南环保有限公司 | Flue gas heat exchange type evaporator of flue gas desulfurization side product by ammonia method |
| CN102614767A (en) * | 2011-01-28 | 2012-08-01 | 苏云学 | Apparatus for improving ammonium sulfate purity by ammonia desulfurization |
-
2014
- 2014-06-11 CN CN201410255295.7A patent/CN105311937A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6063352A (en) * | 1997-07-19 | 2000-05-16 | Lurgi Lentjes Bischoff Gmbh | Method of removing sulfur dioxide from flue gases, especially power plant flue gases and flue gases from garbage incinerator plants |
| CN1751776A (en) * | 2004-09-22 | 2006-03-29 | 上海弗卡斯环保工程有限公司 | Ammonia type flue gas desulfurizing apparatus and its process |
| CN200998639Y (en) * | 2007-02-09 | 2008-01-02 | 李培生 | Concentrated crystallization and absorbed oxidation combined type ammonia process desulfuration tower |
| US20100139488A1 (en) * | 2008-12-05 | 2010-06-10 | Marsulex Environmental Technologies Corporation | Flue gas scrubbing apparatus and process |
| CN201492952U (en) * | 2009-08-12 | 2010-06-02 | 江苏新世纪江南环保有限公司 | Flue gas heat source heat pipe-type evaporation device of byproduct in ammonia process of flue gas desulfurization |
| CN201537456U (en) * | 2009-08-12 | 2010-08-04 | 江苏新世纪江南环保有限公司 | Flue gas heat exchange type evaporator of flue gas desulfurization side product by ammonia method |
| CN102614767A (en) * | 2011-01-28 | 2012-08-01 | 苏云学 | Apparatus for improving ammonium sulfate purity by ammonia desulfurization |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105800648A (en) * | 2016-03-07 | 2016-07-27 | 攀钢集团攀枝花钢钒有限公司 | Application method of ammonium sulfate prepared from smelting offgas |
| CN105800648B (en) * | 2016-03-07 | 2018-02-02 | 攀钢集团攀枝花钢钒有限公司 | The Application way for the ammonium sulfate that flue gas during smelting is produced |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160210 |
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