CN102887529A - Ammonium sulfate production system and preparation method thereof - Google Patents
Ammonium sulfate production system and preparation method thereof Download PDFInfo
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- CN102887529A CN102887529A CN2012104222539A CN201210422253A CN102887529A CN 102887529 A CN102887529 A CN 102887529A CN 2012104222539 A CN2012104222539 A CN 2012104222539A CN 201210422253 A CN201210422253 A CN 201210422253A CN 102887529 A CN102887529 A CN 102887529A
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- ammonium sulfate
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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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention particularly relates to an ammonium sulfate production system and a preparation method thereof. The ammonium sulfate production system comprises a saturator for generating ammonium sulfate. The ammonium sulfate production system is characterized in that the saturator is respectively connected with an exhaust output device for outputting ammonia-containing exhaust generated by an cyanuric acid device, a mother solution tank containing sulfuric acid, and a cooling absorption tower for removing ammonia in the exhaust; the cooling absorption tower is also connected with a concentrated acid water output device for outputting concentrated acid water generated by the cyanuric acid device, and the mother solution tank; and the saturator is also sequentially connected with a dual-effect evaporator, a crystallization kettle, a centrifugal machine and a drier. The invention fully utilizes waste heat of flue gas, and cancels the existing hot blast furnace for drying ammonium sulfate. The waste acid water is sufficiently recycled; and the invention greatly enhances the saturation degree of the ammonium sulfate solution, and uses the dual-effect evaporator instead of the original single-effect kettle-type evaporation device, thereby greatly lowering the vapor consumption.
Description
(1) technical field
The present invention relates to the ammonium sulfate technical field, particularly a kind of ammonium sulfate production system and preparation method thereof.
(2) background technology
The dilute sulphuric acid that produces in the ammonia that urea condensation is produced, the high-temperature flue gas that the urea condensation stove produces and the cyanuric acid treating process is processed trouble, can improve production cost, and directly discharging then can cause serious environmental pollution.
(3) summary of the invention
The present invention provides a kind of protection of the environment, has reduced ammonium sulfate production system of cost and preparation method thereof in order to remedy the deficiencies in the prior art.
The present invention is achieved through the following technical solutions:
A kind of ammonium sulfate production system, comprise for the saturex that generates ammonium sulfate, its special character is: the tail gas take-off equipment of the ammonia-containing exhaust that this saturex produces with the cyanuric acid device respectively, the mother liquor pond of splendid attire sulfuric acid, the cooling absorption tower of removing ammonia in the tail gas are connected, concentrated acid water take-off equipment, the mother liquor pond of the concentrated acid water that this cooling absorption tower also generates with the cyanuric acid device link to each other, this saturex also with two imitate evaporation units, crystallization kettle, whizzer, baker and be connected successively.
Ammonium sulfate production of the present invention system, two effect evaporation units comprise 1st effective evaporator and a corresponding effect interchanger, 2nd effect evaporator and corresponding two effect interchanger, 2nd effect evaporator is connected with surface condenser, 1st effective evaporator is connected with crystallization kettle, this crystallization kettle is connected with circulating water pipeline, the urea condensation stove is connected with baker, the single-action autoclave evaporation unit that two effect evaporation units often use now, steam consumption reduces greatly, the urea condensation stove is connected with baker, can take full advantage of the stack gas waste heat, has replaced the hotblast stove of existing ammonium sulfate drying, both effectively utilize the energy, greatly reduced again smoke discharge amount and SO
2Pollution.
Ammonium sulfate production of the present invention system, baker is connected with the two-stage cleaning apparatus, blower fan, desulfation dust-extraction device connect successively, stack gas is carried out dust removal process, then discharging.
Ammonium sulfate production method of the present invention, its special character is: may further comprise the steps:
(1) preparation ammonium sulfate liquor: squeeze into the cooling absorption tower from the concentrated acid water that urine cyanic acid device comes, the ammonia of absorption in saturex tail gas, exhaust emissions, concentrated acid water enters the mother liquor pond, then in the mother liquor pond, add sulfuric acid and mix mother liquor with the formation of concentrated acid water, it is sent into saturex and the ammonia-containing exhaust reaction that comes from the cyanuric acid device, obtain ammonium sulfate liquor;
(2) concentrated vitriol ammonium mother liquor: the ammonium sulfate liquor that goes out saturex enters two effect evaporation units and concentrates, and obtains ammoniumsulphate soln;
(3) crystallization: ammoniumsulphate soln is sent to the crystallization kettle crystallisation by cooling, isolates ammonia sulfate crystal through whizzer;
(4) drying: ammonia sulfate crystal places in the baker, and the high-temperature flue gas that the urea condensation stove produces enters this baker dries ammonia sulfate crystal;
(5) packing: be packaged to be product.
Ammonium sulfate production method of the present invention, the stack gas of discharging from baker in the step (4) need to be through dust removal process, this process is that stack gas is processed through the two-stage cleaning apparatus first, then enter desulfation dust-extraction device and fully contact mixing with the interior limestone powder that adds of this device with the slurries that water is made, enter again atmosphere, stack gas is carried out dust removal process.
Beneficial effect of the present invention: the high-temperature flue gas that utilizes the urea condensation stove to produce is dried the ammonium sulfate of next process, take full advantage of the stack gas waste heat, cancelled the hotblast stove of existing ammonium sulfate drying, both effectively utilize the energy, greatly reduced again the pollution of smoke discharge amount and SO2; With the waste acid water that produces in the useless ammonia that produces in the rough process and the treating process in sulphur ammonium workshop synthetic ammonium sulfate again, not only stopped useless ammonia and put, and made waste acid water obtain abundant recycling, and expanded industrial chain; The dilute sulphuric acid that produces in the ammonia that urea condensation is produced and the cyanuric acid treating process, adopting the saturex circulation to absorb---tower waste water tail gas absorbs and two effect pattern evaporation technologies, greatly improved the ammoniumsulphate soln saturation ratio, adopt two effect evaporation units to replace the evaporation of original device single-action autoclave, steam consumption reduces greatly.
(4) description of drawings
The present invention is further illustrated below in conjunction with accompanying drawing.
Accompanying drawing 1 is process flow sheet of the present invention;
Among the figure, 1 saturex, 2 tail gas take-off equipments, 3 mother liquor ponds, 4 cooling absorption towers, 5 concentrated acid water take-off equipments, 6 two effect evaporation units, 7 crystallization kettles, 8 whizzers, 9 bakers, 10 urea condensation stoves, 11 two-stage cleaning apparatuss, 12 desulfation dust-extraction devices.
(5) embodiment
The invention provides a kind of ammonium sulfate production system, this system comprises for the saturex 1 that generates ammonium sulfate, the tail gas take-off equipment 2 of the ammonia-containing exhaust that this saturex 1 produces with the cyanuric acid device respectively, the mother liquor pond 3 of splendid attire sulfuric acid, the cooling absorption tower 4 of removing ammonia in the tail gas are connected, concentrated acid water take-off equipment 5, the mother liquor pond 3 of the concentrated acid water that this cooling absorption tower 4 also generates with the cyanuric acid device link to each other, this saturex 1 also with two imitate evaporation units 6, crystallization kettle 7, whizzer 8, baker 9 and be connected successively.Wherein two effect evaporation units 6 comprise 1st effective evaporator and a corresponding effect interchanger, 2nd effect evaporator and corresponding two effect interchanger, 2nd effect evaporator is connected with surface condenser, 1st effective evaporator is connected with crystallization kettle 7, this crystallization kettle 7 is connected with circulating water pipeline, urea condensation stove 10 is connected with baker 9, the single-action autoclave evaporation unit that two effect evaporation units 6 often use now, steam consumption reduces greatly, urea condensation stove 10 is connected with baker 9, can take full advantage of the stack gas waste heat, the hotblast stove that has replaced existing ammonium sulfate drying had both effectively utilized the energy, had greatly reduced again smoke discharge amount and SO
2Pollution.Baker is connected with the two-stage cleaning apparatus, blower fan, desulfation dust-extraction device connect successively, and stack gas is carried out dust removal process, then discharging.
The ammonium sulfate composition principle is:
2 ammonias+sulfuric acid → ammonium sulfate
Its production process is:
The ammonia-containing exhaust that comes from the cyanuric acid device enters spray-absorption district, saturex 1 top from central canal, gas is divided into two strands, along the inwall of saturex 1 and the spatial flow of saturex 1 interior acid separator outer wall formation, the circulating mother liquor pump is extracted the acid ammonium sulfate liquor in the saturex 1 bottom CRYSTAF groove out, spray to the ring-like space between outer cylinder body, tail gas directly contacts with acid mother liquid, ammonia and sulfuric acid reaction in the tail gas are transformed into ammonium sulfate, tail gas is distinguished the acid separator that enters in the central section by spray, except behind the acid mist of deentrainment, out enter cooling absorption tower 4 from central gas outlet tube, with the acid-bearing wastewater aqueous solution counter current contact that the cyanuric acid device comes, the tail gas on the absorption tower 4 that goes out to lower the temperature is emptying through blower fan.
The concentrated acid water that comes from urine cyanic acid device enters the concentrated acid tank, squeeze into cooling absorption tower 4 through concentrated acid water acid pump again, behind the ammonia in the absorption tail gas, by being pumped into mother liquor pond 3,75% sulfuric acid of outsourcing also adds mother liquor pond 3, mixes mother liquor and squeezes into saturex 1 absorbing ammonia by pump and generate ammonium sulfate.It is about 44% to go out the ammonium sulfate concentrations of saturex 1, and mother liquor is pumped into evaporation section by ammonium sulfate liquor.
Ammonium sulfate liquor by saturex 1 carries out flow control by flow control circuit, enter the top of two effect interchanger, ammonium sulfate liquor flows down and is undertaken flowing into 2nd effect evaporator after the heat exchange by 1st effective evaporator primary steam out along the heat transfer tube inwall, steam is separated from 2nd effect evaporator, be condensed into liquids recovery as circulating water system through surface condenser again, solution after will being concentrated by the ammoniumsulphate soln pump is delivered to plate type preheater and is heated, then deliver to the top of an effect interchanger, carry out flowing into 1st effective evaporator after the heat exchange with the 1.0MPa saturation steam from the boiler house, steam is separated from 1st effective evaporator, will be concentrated into about 50% ammoniumsulphate soln by the concentrated ammonium sulfate solution pump and be sent to crystallization kettle 7 crystallisation by cooling.
Vitriol oil ammonium mother liquor is constantly grown up through cooling crystal grain in crystallization kettle 7, isolate ammonium sulfate through whizzer 8, the high-temperature flue gas that urea condensation stove 10 produces passes into baker 9, crystal is after 9 oven dry of tumble drying device, packing is sent into the warehouse as product, and the ammonium sulfate liquor that whizzer 8 separates is sent into mother liquor pond 3 and continued the circulation absorption.Baker 9 stack gas out first enters desulfation dust-extraction device 12 by blower fan again through two-stage cleaning apparatus 11, limestone powder is added water to be made slurries and pumps into desulfation dust-extraction device 12 as absorption agent and fully contact mixing with stack gas, sulfurous gas in the stack gas and the calcium carbonate in the slurries and the air that blasts from the desulfation dust-extraction device bottom carry out oxidizing reaction and generate calcium sulfate, after calcium sulfate reached certain saturation degree, crystallization formed dihydrate gypsum.The gypsum slurries of discharging through desulfation dust-extraction device 12 enters settling tank through concentrated, dehydration, make its water content less than 10%, then deliver to the gypsum bunker with transfer roller and stack, the stack gas after the desulfurization is removed droplet through mist eliminator, after passing through again the interchanger heat temperature raising, enter atmosphere by chimney.Because desulfation dust-extraction device 12 inner absorbent slurries contact with stack gas by the recycle pump iterative cycles, the absorption agent utilization ratio is very high, and calcium sulfur ratio is lower, and desulfuration efficiency can be greater than 95%.
Claims (5)
1. ammonium sulfate production system, comprise for the saturex that generates ammonium sulfate, it is characterized in that: the tail gas take-off equipment of the ammonia-containing exhaust that this saturex produces with the cyanuric acid device respectively, the mother liquor pond of splendid attire sulfuric acid, the cooling absorption tower of removing ammonia in the tail gas are connected, concentrated acid water take-off equipment, the mother liquor pond of the concentrated acid water that this cooling absorption tower also generates with the cyanuric acid device link to each other, this saturex also with two imitate evaporation units, crystallization kettle, whizzer, baker and be connected successively.
2. ammonium sulfate production according to claim 1 system, it is characterized in that: two effect evaporation units comprise 1st effective evaporator and a corresponding effect interchanger, 2nd effect evaporator and corresponding two effect interchanger, 2nd effect evaporator is connected with surface condenser, 1st effective evaporator is connected with crystallization kettle, this crystallization kettle is connected with circulating water pipeline, and the urea condensation stove is connected with baker.
3. ammonium sulfate production according to claim 1 and 2 system is characterized in that: baker is connected with the two-stage cleaning apparatus, blower fan, desulfation dust-extraction device connect successively.
4. ammonium sulfate production method according to claim 2 is characterized in that: may further comprise the steps:
(1) preparation ammonium sulfate liquor: squeeze into the cooling absorption tower from the concentrated acid water that urine cyanic acid device comes, the ammonia of absorption in saturex tail gas, exhaust emissions, concentrated acid water enters the mother liquor pond, then in the mother liquor pond, add sulfuric acid and mix mother liquor with the formation of concentrated acid water, it is sent into saturex and the ammonia-containing exhaust reaction that comes from the cyanuric acid device, obtain ammonium sulfate liquor;
(2) concentrated vitriol ammonium mother liquor: the ammonium sulfate liquor that goes out saturex enters two effect evaporation units and concentrates, and obtains ammoniumsulphate soln;
(3) crystallization: ammoniumsulphate soln is sent to the crystallization kettle crystallisation by cooling, isolates ammonia sulfate crystal through whizzer;
(4) drying: ammonia sulfate crystal places in the baker, and the high-temperature flue gas that the urea condensation stove produces enters this baker dries ammonia sulfate crystal;
(5) packing: be packaged to be product.
5. ammonium sulfate production method according to claim 4, it is characterized in that: the stack gas of discharging from baker in the step (4) need to be through dust removal process, this process is that stack gas is processed through the two-stage cleaning apparatus first, then enter desulfation dust-extraction device and fully contact mixing with the interior limestone powder that adds of this device with the slurries that water is made, enter again atmosphere.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104118889A (en) * | 2014-08-11 | 2014-10-29 | 衡阳市华虎化工有限公司 | Preparation method of food-grade ammonium sulfate |
| CN105329868A (en) * | 2015-10-30 | 2016-02-17 | 东华工程科技股份有限公司 | Method for recycling ammonia and hydrogen from ammonia synthesizing tail gas |
| CN105439174A (en) * | 2015-12-19 | 2016-03-30 | 鄄城康泰化工有限公司 | Preparation method of ammonium sulfate |
| CN108319247A (en) * | 2018-04-04 | 2018-07-24 | 上海天坛助剂有限公司 | Ammonium persulfate process units DCS control systems and control method |
| CN109366717A (en) * | 2018-12-30 | 2019-02-22 | 贵州源于诚石膏建材有限公司 | A kind of highmulti paper surface gypsum board process units |
| CN109809433A (en) * | 2019-03-27 | 2019-05-28 | 重庆万盛川东化工有限公司 | Cyanic acid process for producing sodium |
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| CN1792796A (en) * | 2005-10-22 | 2006-06-28 | 河北冀衡化学股份有限公司 | Process for recoverying cyanuric acid three wastes |
| CN101734813A (en) * | 2009-12-21 | 2010-06-16 | 山东大明消毒科技有限公司 | Technology for recovering ammonium sulfate by waste acid pickle generated in process of producing cyanuric acid and equipment therefor |
| CN101830859A (en) * | 2010-05-14 | 2010-09-15 | 菏泽沃蓝化工有限公司 | Production method of isocyanuric acid |
| CN102584731A (en) * | 2011-12-30 | 2012-07-18 | 南通紫鑫实业有限公司 | Process for coproducing melamine and ammonium sulfate |
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| CN1792796A (en) * | 2005-10-22 | 2006-06-28 | 河北冀衡化学股份有限公司 | Process for recoverying cyanuric acid three wastes |
| CN101734813A (en) * | 2009-12-21 | 2010-06-16 | 山东大明消毒科技有限公司 | Technology for recovering ammonium sulfate by waste acid pickle generated in process of producing cyanuric acid and equipment therefor |
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| CN102584731A (en) * | 2011-12-30 | 2012-07-18 | 南通紫鑫实业有限公司 | Process for coproducing melamine and ammonium sulfate |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104118889A (en) * | 2014-08-11 | 2014-10-29 | 衡阳市华虎化工有限公司 | Preparation method of food-grade ammonium sulfate |
| CN104118889B (en) * | 2014-08-11 | 2016-10-26 | 王子航 | A kind of preparation method of food stage ammonium sulfate |
| CN105329868A (en) * | 2015-10-30 | 2016-02-17 | 东华工程科技股份有限公司 | Method for recycling ammonia and hydrogen from ammonia synthesizing tail gas |
| CN105439174A (en) * | 2015-12-19 | 2016-03-30 | 鄄城康泰化工有限公司 | Preparation method of ammonium sulfate |
| CN105439174B (en) * | 2015-12-19 | 2018-02-02 | 鄄城康泰化工有限公司 | A kind of preparation method of ammonium sulfate |
| CN108319247A (en) * | 2018-04-04 | 2018-07-24 | 上海天坛助剂有限公司 | Ammonium persulfate process units DCS control systems and control method |
| CN109366717A (en) * | 2018-12-30 | 2019-02-22 | 贵州源于诚石膏建材有限公司 | A kind of highmulti paper surface gypsum board process units |
| CN109809433A (en) * | 2019-03-27 | 2019-05-28 | 重庆万盛川东化工有限公司 | Cyanic acid process for producing sodium |
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| CN102887529B (en) | 2015-05-20 |
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Denomination of invention: Ammonium sulfate production system and preparation method thereof Effective date of registration: 20210730 Granted publication date: 20150520 Pledgee: Shandong juancheng Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG WOLAN BIOLOGY GROUP Co.,Ltd. Registration number: Y2021980007144 |
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Date of cancellation: 20220926 Granted publication date: 20150520 Pledgee: Shandong juancheng Rural Commercial Bank Co.,Ltd. Pledgor: SHANDONG WOLAN BIOLOGY GROUP Co.,Ltd. Registration number: Y2021980007144 |