CN101643369B - Process and device for producing (NH4)2SO4 fertilizer by using ammonium sulfite solution - Google Patents
Process and device for producing (NH4)2SO4 fertilizer by using ammonium sulfite solution Download PDFInfo
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- CN101643369B CN101643369B CN2009100660759A CN200910066075A CN101643369B CN 101643369 B CN101643369 B CN 101643369B CN 2009100660759 A CN2009100660759 A CN 2009100660759A CN 200910066075 A CN200910066075 A CN 200910066075A CN 101643369 B CN101643369 B CN 101643369B
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Abstract
The invention discloses a process and a device for producing a (NH4)2SO4 fertilizer by using an ammonium sulfite solution. In an ammonia-process flue gas desulfurization device, by using the ammonium sulfite solution (NH4)2SO3 produced after ammonia absorbs SO2, the outlet of a liquid inlet ejector (9) is led into the solution at the middle lower part of an oxidation tank (2) by a downcomer through a oxidization preparation process of (NH4)2SO4 fertilizer by self-absorption of air so as to increase the reaction time; and the medium is fully oxidized through the three-stage cyclic oxidation. The cyclic oxidation procedure comprises liquid at the lower part of the oxidation tank (2), a recycle pump (4), a recycle liquid ejector and the middle lower part of the oxidation tank. Air is absorbed in the liquid inlet ejector, and sheared by liquid flows and dispersed into tiny air particles, so that the contact specific area of the gas and the liquid is increased by tens of times compared with the bubbling oxidization, thereby fully utilizing the oxygen in the air. Therefore, the process enhances the reaction efficiency, shortens the reaction times and increases the conversion rate.
Description
Technical field
The present invention relates to (NH
4)
2SO
4The technical field that chemical fertilizer is produced is particularly useful for coal firing boiler, kiln, a kind of of smelting furnace and produces (NH with ammonium sulfite solution
4)
2SO
4The technology of chemical fertilizer and device.
Background technology
SO in the boiler smoke
2After the ammoniacal liquor absorption, form (NH
4)
2SO
3, and the by product that reclaims in the flue gas desulfurization is (NH
4)
2SO
4(as chemical fertilizer, being easy to market sale) therefore in ammonia desulfurizing process, needs (NH
4)
2SO
3Be oxidized to (NH
4)
2SO
4, this oxidizing process adopts the air self-suction oxidation, and cost is minimum, and is the most easy to control.Traditional (NH
4)
2SO
3Oxidation technology all adopts and air is blasted directly after gas blower pressurization liquid layer carries out the bubbling oxidation in the oxidation tank; This technology is because the formation bubble is big; The surface-area that gas-liquid directly contacts is less, causes gas-liquid mass transfer insufficient, and institute's atmospheric oxidation utilization ratio that blasts is lower; Long reaction time, oxidation ratio is on the low side.
Summary of the invention
For solving tradition (NH
4)
2SO
3Oxidizing process directly blasts method after adopting air pressurized, long reaction time, oxidation ratio problem of lower, and the present invention provides a kind of and produces (NH with ammonium sulfite solution
4)
2SO
4The technology of chemical fertilizer and device have made full use of airborne oxygen, and reaction efficiency is improved, and the reaction times shortens, and transformation efficiency raises.
For realizing the foregoing invention purpose, the present invention adopts the technical scheme that is described below:
Describedly a kind ofly produce (NH with ammonium sulfite solution
4)
2SO
4The technology of chemical fertilizer in ammonia type flue gas desulfurizing apparatus, absorbs SO with ammoniacal liquor
2Ammonium sulfite solution (the NH that the back produces
4)
2SO
3, carry out oxidation through air self-suction and produce (NH
4)
2SO
4Chemical fertilizer technology, its step is following:
1, adopts the air self-suction oxidation, with the ammonium sulphite (NH that treats oxidation
4)
2SO
3Solution is through the feed liquor injector at liquid feeding pump pressurization back input oxidation tank top; Solution is in high-velocity jet in oxidation tank, and the vacuum that the feed liquor injector forms when utilizing high velocity liquid stream through vacuum chamber directly sucks atmosphere from bleeding point; The high speed flow is cut into air and tiny air particles; The gas-to-liquid contact area is significantly increased, and mass transfer is abundant between gas-liquid, and reaction is accelerated;
2, be the utilization rate that further increases oxygen in the air; Import the outlet of feed liquor injector in the solution of oxidation tank middle and lower part with pipeline; To increase the reaction time; When the gas-liquid mixed flow gets into jar middle and lower part solution; Gas-liquid begins to separate; The formed bubble of gas passes liquid layer and rises in jar, further with pot liquid medium mass transfer reaction, reacted waste gas after passing liquid layer outside tank deck exhaust outlet drain tank;
3, cyclic oxidation, for making the abundant oxidation of medium, the oxidation when only depending on solution feed is not enough; Oxidation is divided into three grades; Every inter-stage separates with division board, and to reduce the back-mixing between level and the level as far as possible, upper level flows into next stage controllably through the passage between division board and continues oxidation; Automatic overflow is gone into next section of mother liquor tank entering treatment scheme during to final stage, and every grade of flow process of its cyclic oxidation is: oxidation tank bottom feed liquid-recycle pump-circulation fluid injector-oxidation tank middle and lower part.
Implement used a kind of of above-mentioned technology and produce (NH with ammonium sulfite solution
4)
2SO
4The device of chemical fertilizer comprises: oxidation tank, recycle pump, jet-type feed liquor injector; The oxidation tank top is provided with jet-type feed liquor injector, and the import of jet-type feed liquor injector is by the pipeline connection liquid feeding pump, and the outlet of jet-type feed liquor injector is stretched into solution middle and lower part in the oxidation tank through following liquid pipe; The oxidation tank bottom is provided with the cyclic oxidation taphole that is at least, each cyclic oxidation taphole communication loop oxidizer unit, and the outlet of cyclic oxidation device is stretched into the solution middle and lower part in the oxidation tank through following liquid pipe; The top of oxidation tank is provided with the venting port of reaction back waste gas.
Describedly a kind ofly produce (NH with ammonium sulfite solution
4)
2SO
4The device of chemical fertilizer, cyclic oxidation device have valve through connect with recycle pump, vacuum breaker, discharging variable valve, circulation fluid injector connection formation of pipeline.
Describedly a kind ofly produce (NH with ammonium sulfite solution
4)
2SO
4The device of chemical fertilizer is provided with vertical division board solution separating is become some oxidation zones in the oxidation tank, be horizontally arranged with the gas distribution grid that makes full use of ascending air and make the several layers perforate that bubble is evenly distributed in the oxidation tank.
Because adopt aforesaid technical scheme, the present invention has following meliority:
A kind ofly produce (NH with ammonium sulfite solution
4)
2SO
4The technology of chemical fertilizer is through in the feed liquor injector, sucking air in the industry ammonium sulfate solution closed cycle process, and air receives the shearing of flow again and is dispersed into and small air small-particle; Cause tens of times of ground of gas-to-liquid contact surface area ratio bubbling style oxidation to increase; Made full use of airborne oxygen, reaction efficiency is improved, the reaction times shortens; Transformation efficiency raises, and its characteristics are:
1, adopt the air self-suction oxidation after, improved more than tens of times than the mass-transfer efficiency of former roots blower air blast oxidation, the atmospheric oxidation utilization ratio has improved more than three times, the ammonium sulfite solution amount of the oxidation tank oxidation of same volume can improve more than three times.
2, save Root's blower after, produce noise and reduce greatly, production environment is improved.
Though 3 become many recycle pumps by a Root's blower, because the recycle pump price is low, gross investment reduces relatively.
4, watt consumption practices thrift 20% than roots blower.
5, roots blower air blast oxidation is when oxidization time is four hours, and oxidation ratio has only 75%; And the present invention can make oxidation ratio up to more than 99% in the identical time.
Description of drawings
Fig. 1 is that ammonium sulfite solution is produced (NH
4)
2SO
4The process flow sheet of chemical fertilizer;
Among the figure: the 1-liquid outlet; The 2-oxidation tank; The 3-valve; The 4-recycle pump; The 5-vacuum breaker; 6-circulating-pump outlet variable valve; 7-circulation fluid injector; 8-oxidation tank venting port; 9-feed liquor injector; The 10-gas distribution grid; The 11-division board; The 12-tapping valve; The 13-liquid feeding pump; 14 (a, b)-following liquid pipe;
Embodiment
As shown in Figure 1: as a kind ofly to produce (NH with ammonium sulfite solution
4)
2SO
4The technology of chemical fertilizer is in ammonia type flue gas desulfurizing apparatus, absorbs SO with ammoniacal liquor
2Ammonium sulfite solution (the NH that the back produces
4)
2SO
3, carry out oxidation through air self-suction and produce (NH
4)
2SO
4Chemical fertilizer technology, its step is following:
1, adopts the air self-suction oxidation, with the ammonium sulphite (NH that treats oxidation
4)
2SO
3Solution is through the feed liquor injector 9 at liquid feeding pump 13 pressurization back input oxidation tanks 2 tops; Solution is in high-velocity jet in oxidation tank 2, and the vacuum that feed liquor injector 9 forms when utilizing high velocity liquid stream through vacuum chamber directly sucks atmosphere from bleeding point; The high speed flow is cut into air and tiny air particles; The gas-to-liquid contact area is significantly increased, and mass transfer is abundant between gas-liquid, and reaction is accelerated.
2, be the utilization ratio that further increases oxygen in the air; 9 outlets of feed liquor injector are imported oxidation tank 2 middle and lower parts with pipeline, to increase the reaction times, when the gas-liquid mixed flow gets into the jar middle and lower part; Gas-liquid begins to separate; The formed bubble of gas passes liquid layer and rises in jar, further with pot liquid medium mass transfer reaction, reacted waste gas after passing liquid layer outside tank deck venting port drain tank.
3, cyclic oxidation, for making the abundant oxidation of medium, the oxidation when only depending on solution feed is not enough; Oxidation is divided into three grades; Every inter-stage is with division board 11 separation, and to reduce the back-mixing between level and the level as far as possible, upper level flows into next stage continuation oxidation controllably through the passage of 11 of division boards; Automatic overflow is gone into next section of mother liquor tank entering treatment scheme during to final stage, and the flow process of its cyclic oxidation is: oxidation tank 2 bottoms feed liquid-recycle pump 4-circulation fluid injector 7-oxidation tank 2 middle and lower parts.
Implement used a kind of of above-mentioned technology and produce (NH with ammonium sulfite solution
4)
2SO
4The device of chemical fertilizer comprises: oxidation tank, recycle pump, jet-type feed liquor injector; Oxidation tank 2 tops are provided with jet-type feed liquor injector 9, and the import of jet-type feed liquor injector 9 is by pipeline connection liquid feeding pump 13, and 9 outlets of jet-type feed liquor injector are stretched into solution middle and lower part in the oxidation tank through following liquid pipe 14a; Oxidation tank 2 bottoms are provided with the cyclic oxidation taphole that is at least, each cyclic oxidation taphole communication loop oxidizer unit, and the outlet of cyclic oxidation device is stretched into the solution middle and lower part in the oxidation tank 2 through following liquid pipe 14b; The top of oxidation tank 2 is provided with the venting port 8 of reaction back waste gas.Be provided with vertical division board 11 in the described oxidation tank solution separating is become some oxidation zones, be horizontally arranged with the gas distribution grid 10 that makes full use of ascending air and make the several layers perforate that bubble is evenly distributed in the oxidation tank.
During use, can be found out by Fig. 1 needs the ammonium sulphite of oxidation (NH
4)
2SO
3Solution is at first imported jet-type feed liquor injector 9 fluid inlets of oxidation tanks 2 top high speed liquid-jet devices from liquid feeding pump 13; High-velocity jet in jet-type feed liquor injector 9; Said high speed liquid-jet device is a feed liquor injector 9; It is the liquid-jet vacuum pump of LJX150-2 that the feed liquor injector adopts model, has vacuum chamber is arranged, fluid inlet, liquid outlet, bleeding point.
Simultaneously; Suck atmosphere from the bleeding point of feed liquor injector 9,, begin reaction accomplishing gas-liquid mixed in the liquid pipe 14a down; Gas-liquid mixture impacts a segment distance downwards after liquid pipe 14a comes out down certainly again; Air is bubble and rises then, proceeds mass transfer reaction with solution, and discharges from oxidation tank venting port 8 after the liquid separation.Through the solution of above-mentioned reaction, be preliminary oxidation, oxidation ratio is very low, need proceed cyclic oxidation.The process of cyclic oxidation is: solution is drawn from oxidation tank 2 bottoms; Through being at least one cyclic oxidation device, described cyclic oxidation device has valve 3 through the pipeline connection formation of connect with recycle pump 4, vacuum breaker 5, discharging variable valve 6, circulation fluid injector 7.The valve 3 of cyclic oxidation device gets into recycle pump 4, gets into the liquid-inlet of circulation fluid injector 7 again through vacuum breaker 5, discharging variable valve 6, and the bleeding point in the course of injection in the circulation fluid injector 7 sucks atmosphere and carries out oxidation, and after this process repeats.
For improving the oxidation tank utilization ratio; The process of cyclic oxidation can be as required; Use a plurality of cyclic oxidation devices; Or a plurality of circulation lines of each cyclic oxidation device parallel connection, a plurality of circulation fluid injector 7, general 2～10 are reacted, so that the volume spaces that make full use of in the oxidation tank 2 carry out quick oxidation.For reducing unnecessary back-mixing; Can use division board 11 to be divided into 2～5 zones oxidation tank 2 and carry out the subregion oxidation. for the bubble that makes rising is evenly distributed; Make full use of the air that blasts, the gas distribution grid 10 of 1～3 layer of perforate is set in oxidation tank 2, effectively utilize oxidation tank 2 volumes.When solution for a long time, discharge from liquid outlet 1; When having an accident or need emptying, can be through tapping valve 12 with the liquid emptying.Above circulation fluid injector 7 is identical with feed liquor injector 9, and its model is the liquid-jet vacuum pump of LJX150-2.
Claims (2)
1. produce (NH with ammonium sulfite solution for one kind
4)
2SO
4The technology of chemical fertilizer in ammonia type flue gas desulfurizing apparatus, absorbs SO with ammoniacal liquor
2Ammonium sulfite solution (the NH that the back produces
4)
2SO
3, it is characterized in that: carry out oxidation through air self-suction and produce (NH
4)
2SO
4Chemical fertilizer technology, its step is following:
1), adopts the air self-suction oxidation, with the ammonium sulphite (NH that treats oxidation
4)
2SO
3Solution is through the feed liquor injector (9) at liquid feeding pump (13) pressurization back input oxidation tank (2) top; Solution is in high-velocity jet in oxidation tank (2), and the vacuum that feed liquor injector (9) forms when utilizing high velocity liquid stream through vacuum chamber directly sucks atmosphere from bleeding point; The high speed flow is cut into air and tiny air particles; The gas-to-liquid contact area is significantly increased, and mass transfer is abundant between gas-liquid, and reaction is accelerated;
2), be the utilization rate that further increases oxygen in the air; Using feed liquor injector (9) outlet down, liquid pipe (14a) imports in the solution of oxidation tank (2) middle and lower part; To increase the reaction time; When the gas-liquid mixed flow gets into jar middle and lower part solution; Gas-liquid begins to separate; The formed bubble of gas passes liquid layer and rises in jar, further with pot liquid medium mass transfer reaction, reacted waste gas after passing liquid layer outside tank deck exhaust outlet drain tank;
3), cyclic oxidation; For making the abundant oxidation of medium; Oxidation when only depending on solution feed is not enough, and oxidation is divided into three grades, and every inter-stage separates with division board (11); To reduce the back-mixing between level and the level as far as possible; Upper level flows into next stage controllably through the passage between division board (11) and continues oxidation, and automatic overflow is gone into next section of mother liquor tank entering treatment scheme during to final stage, and the flow process of its cyclic oxidation is: oxidation tank (2) bottom feed liquid-recycle pump (4)-circulation fluid injector (7)-oxidation tank (2) middle and lower part.
2. implement a kind of of the said technology of claim 1 and produce (NH with ammonium sulfite solution
4)
2SO
4The device of chemical fertilizer; Comprise: oxidation tank, recycle pump, it is characterized in that: also comprise: be positioned at the jet-type feed liquor injector (9) that oxidation tank (2) top is provided with; The import of jet-type feed liquor injector (9) is by pipeline connection liquid feeding pump (13), and jet-type feed liquor injector (9) outlet is stretched into solution middle and lower part in the oxidation tank through following liquid pipe (14a); Oxidation tank (2) bottom is provided with the cyclic oxidation taphole that is at least, each cyclic oxidation taphole communication loop oxidizer unit, and the outlet of cyclic oxidation device is stretched into the solution middle and lower part in the oxidation tank (2) through following liquid pipe (14b); The top of oxidation tank (2) is provided with the venting port (8) of reaction back waste gas; Wherein, the cyclic oxidation device has valve (3) through connect with recycle pump (4), vacuum breaker (5), discharging variable valve (6), circulation fluid injector (7) connection formation of pipeline;
Wherein, be provided with vertical division board (11) in the oxidation tank solution separating is become some oxidation zones, be horizontally arranged with the gas distribution grid (10) that makes full use of ascending air and make the several layers perforate that bubble is evenly distributed in the oxidation tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100660759A CN101643369B (en) | 2009-08-28 | 2009-08-28 | Process and device for producing (NH4)2SO4 fertilizer by using ammonium sulfite solution |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100660759A CN101643369B (en) | 2009-08-28 | 2009-08-28 | Process and device for producing (NH4)2SO4 fertilizer by using ammonium sulfite solution |
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| Publication Number | Publication Date |
|---|---|
| CN101643369A CN101643369A (en) | 2010-02-10 |
| CN101643369B true CN101643369B (en) | 2012-04-18 |
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| CN2009100660759A Expired - Fee Related CN101643369B (en) | 2009-08-28 | 2009-08-28 | Process and device for producing (NH4)2SO4 fertilizer by using ammonium sulfite solution |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101879403B (en) * | 2010-07-02 | 2012-09-05 | 洛阳市天誉环保工程有限公司 | Multifunctional reaction tank and purification process thereof for flue gas desulfurization and denitrification |
| CN101927145B (en) * | 2010-08-24 | 2012-06-20 | 河南心连心化肥有限公司 | Multistage air self-suction spraying device |
| CN106865570B (en) * | 2017-02-28 | 2019-02-26 | 贵州诺威施生物工程有限公司 | The oxidation unit and technique of ammonium sulfite solution |
| TWI726350B (en) * | 2019-07-08 | 2021-05-01 | 吾邦土智慧生活股份有限公司 | Fertilizer production device |
| CN112551549A (en) * | 2020-12-17 | 2021-03-26 | 南京延长反应技术研究院有限公司 | Reaction system and method for oxidizing ammonium sulfite |
| CN114405257B (en) * | 2021-12-23 | 2023-04-28 | 陕西航天机电环境工程设计院有限责任公司 | Propellant waste gas treatment device and method based on multistage pressure-stabilizing vacuum homogenization technology |
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|---|---|---|---|---|
| CN1048841A (en) * | 1990-04-20 | 1991-01-30 | 孙进林 | A kind of method of producing ammonium sulfate and utilizing ammonium sulfate production compound fertilizer |
| CN1736559A (en) * | 2005-07-15 | 2006-02-22 | 洛阳市天誉环保工程有限公司 | Ammonia-ammonia sulfate dry type flue gas desulfurizing denitrifying equipment and technique |
| CN101143291A (en) * | 2006-09-13 | 2008-03-19 | 史选增 | Low-consumption high-quality ammonium sulfate fertilizer recovery wet ammonia process desulfurizing technology |
| CN101428768A (en) * | 2008-11-18 | 2009-05-13 | 云南亚太环境工程设计研究有限公司 | Method for reutilization of sulphuric acid tail gas sulphur dioxide of phosphor chemical industry |
-
2009
- 2009-08-28 CN CN2009100660759A patent/CN101643369B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1048841A (en) * | 1990-04-20 | 1991-01-30 | 孙进林 | A kind of method of producing ammonium sulfate and utilizing ammonium sulfate production compound fertilizer |
| CN1736559A (en) * | 2005-07-15 | 2006-02-22 | 洛阳市天誉环保工程有限公司 | Ammonia-ammonia sulfate dry type flue gas desulfurizing denitrifying equipment and technique |
| CN101143291A (en) * | 2006-09-13 | 2008-03-19 | 史选增 | Low-consumption high-quality ammonium sulfate fertilizer recovery wet ammonia process desulfurizing technology |
| CN101428768A (en) * | 2008-11-18 | 2009-05-13 | 云南亚太环境工程设计研究有限公司 | Method for reutilization of sulphuric acid tail gas sulphur dioxide of phosphor chemical industry |
Non-Patent Citations (1)
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| 肖文德等.火电厂烟气脱硫新方法--NADS氨-肥法.《中国电力》.2001,第34卷(第7期),54-58. * |
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| CN101643369A (en) | 2010-02-10 |
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