CN103908797A - Feeding system and feeding method of crystallizer - Google Patents

Feeding system and feeding method of crystallizer Download PDF

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Publication number
CN103908797A
CN103908797A CN201410143016.8A CN201410143016A CN103908797A CN 103908797 A CN103908797 A CN 103908797A CN 201410143016 A CN201410143016 A CN 201410143016A CN 103908797 A CN103908797 A CN 103908797A
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China
Prior art keywords
mother liquor
storage tank
crystallizer
feed
charging aperture
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CN201410143016.8A
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Chinese (zh)
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CN103908797B (en
Inventor
胡开峰
杨加军
王建明
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攀钢集团西昌钢钒有限公司
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Publication of CN103908797A publication Critical patent/CN103908797A/en
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Publication of CN103908797B publication Critical patent/CN103908797B/en

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Abstract

The invention discloses a feeding system and a feeding method of a crystallizer. The feeding system comprises a mother solution circulating groove, a mother solution storage groove, a crystallizer feeding pump, a crystallization groove supplying pump and a plurality of pipelines, wherein the mother solution circulating groove comprises a feeding opening and a discharging opening lower than the feeding opening along the height direction; the mother solution storage groove comprises a feeding opening and a discharging opening lower than the feeding opening along the height direction; the feeding opening of the mother solution circulating groove is used for receiving a mother solution needing to be evaporated and crystallized; the discharging opening of the mother solution circulating groove is connected with the feeding opening of the crystallization groove supplying pump by a first pipeline; the discharging opening of the crystallization groove supplying pump is connected with the feeding opening of the mother solution storage groove by a second pipeline; the discharging opening of the mother solution storage groove is connected with the feeding opening of the crystallizer feeding pump by a third pipeline; the discharging opening of the crystallizer feeding pump is connected with the feeding opening of the crystallizer by a fourth pipeline. According to the feeding system of the crystallizer and the feeding method disclosed by the invention, the stability of the specific gravity of an ammonium sulfate mother solution which needs to be evaporated and crystallized, and is conveyed to the crystallizer can be obviously improved.

Description

The feed system of crystallizer and feed process

Technical field

The invention belongs to crystallizer apparatus field, specifically, the present invention relates to a kind of feed system of crystallizer and use the method for this feed system for crystallizer charging.

Background technology

The equipment that acid wash is produced ammonium sulfate process comprises absorptive unit and crystallizer.Absorptive unit by sulfuric acid solution by the NH in coke-stove gas 3absorb to produce ammonium sulfate liquor, when the proportion of ammonium sulfate liquor reaches 1.240g/cm 3~1.243g/cm 3after, by pipeline by ammonium sulfate liquor from absorptive unit be delivered to DTB crystallizer control effectively ground evaporative crystallization.

Absorptive unit in the equipment of acid wash production ammonium sulfate process of the prior art is using pickling tower as main equipment.Absorb the NH in coke-stove gas at pickling tower 3process in, the flowing full pipe that is positioned at the mist eliminator of pickling top of tower and is positioned at pickling tower upper-lower section may stop up.In this case, the cleaning that need to blocking portion be shorter than to 0.5h by the demineralized water of 70 ℃ is with dredge blockage part.Demineralized water can increase the content of water in ammonium sulfate liquor in blocking portion is carried out to cleaning process, the proportion of ammonium sulfate liquor is reduced, the follow-up crystallizer that enters that has increased ammonium sulfate liquor carries out the required quantity of steam of evaporative crystallization, thereby has affected the stability of crystallizer operation.In addition enter, unstable granularity and the quality that also can affect the ammonium sulfate product after ammonium sulfate liquor evaporative crystallization of proportion of the ammonium sulfate liquor of crystallizer.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art, a kind of feed system of crystallizer is provided and uses the feed process of this feed system for crystallizer charging.

According to an aspect of the present invention, a kind of feed system of crystallizer is provided, described device comprises Recycling Mother Solution groove, mother liquor storage tank, crystallizer feed pump, crystallization tank supply pump and many pipelines, and wherein, Recycling Mother Solution groove comprises charging aperture and the discharging opening lower than charging aperture along short transverse; Mother liquor storage tank comprises charging aperture and the discharging opening lower than charging aperture along short transverse; The charging aperture of Recycling Mother Solution groove receives the mother liquor that needs evaporative crystallization, the discharging opening of Recycling Mother Solution groove is connected by the first pipeline with the charging aperture of crystallization tank supply pump, the discharging opening of crystallization tank supply pump is connected by second pipe with the charging aperture of mother liquor storage tank, the discharging opening of mother liquor storage tank is connected by the 3rd pipeline with the charging aperture of crystallizer feed pump, and the discharging opening of crystallizer feed pump is connected by the 4th pipeline with the charging aperture of crystallizer.

According to feed system of the present invention, mother liquor storage tank can also comprise lower than charging aperture and higher than discharging opening overfall along short transverse, overfall can be connected by the 5th pipeline with the charging aperture of Recycling Mother Solution groove, and wherein, the charging aperture of Recycling Mother Solution groove can be set to three-port structure.

According to feed system of the present invention, can on the 4th pipeline, be provided with control valve and flowmeter.

According to feed system of the present invention, can in mother liquor storage tank, be provided with floating ball lever meter.

According to feed system of the present invention, can in mother liquor storage tank, be provided with pressure difference transmitter.

According to a further aspect in the invention, a kind of feed process for crystallizer charging that uses above-mentioned feed system is provided, and described feed process comprises the following steps that order is carried out: make the mother liquor of crystallization to be evaporated flow into natural subsidence separation in Recycling Mother Solution groove and in Recycling Mother Solution groove from the charging aperture of Recycling Mother Solution groove; Extract the mother liquor of sedimentation Recycling Mother Solution groove by crystallization tank supply pump from the discharging opening of Recycling Mother Solution groove, and via the charging aperture of mother liquor storage tank, mother liquor is pumped to mother liquor storage tank, mother liquor again carries out sedimentation separation in mother liquor storage tank; Extract the mother liquor of sedimentation mother liquor storage tank and mother liquor is pumped to crystallizer via the charging aperture of crystallizer from the discharging opening of mother liquor storage tank by crystallizer feed pump.

According to feed process of the present invention, mother liquor can be ammonium sulfate liquor.

According to feed process of the present invention, can be by being arranged on the flow of the mother liquor in control valve and flowmeter control the 4th pipeline on the 4th pipeline.

According to feed process of the present invention, can be by being arranged on the liquid level of the mother liquor in the floating ball lever meter monitoring mother liquor storage tank in mother liquor storage tank.

According to feed process of the present invention, can be by being arranged on the liquid level pressure reduction in the pressure difference transmitter monitoring mother liquor storage tank in mother liquor storage tank, and the signal that is arranged on the liquid level pressure reduction in the mother liquor storage tank of control valve on the 4th pipeline and pressure difference transmitter monitoring is carried out to interlocked control, with by the level stability of mother liquor storage tank in precalculated position.

The feed process that is crystallizer charging according to the feed system of crystallizer of the present invention and this feed system of use, can significantly improve the stability of the proportion of the ammonium sulfate liquor that needs evaporative crystallization that is delivered to crystallizer, the follow-up crystallizer that enters that reduces ammonium sulfate liquor carries out the required quantity of steam of evaporative crystallization, improves the stability of crystallizer operation and improves granularity and the quality of the ammonium sulfate product after evaporative crystallization in crystallizer.

Accompanying drawing explanation

The following description of the exemplary embodiment of carrying out in conjunction with the drawings, these and/or other aspect of the present invention and advantage will become clear and be easier to be understood, wherein:

Fig. 1 shows according to the structural representation of the feed system of the crystallizer of exemplary embodiment of the present invention.

Description of reference numerals:

1 Recycling Mother Solution groove

The charging aperture of 11 Recycling Mother Solution grooves

The discharging opening of 12 Recycling Mother Solution grooves

2 mother liquor storage tanks

The charging aperture of 21 mother liquor storage tanks

The discharging opening of 22 mother liquor storage tanks

The overfall of 23 mother liquor storage tanks

3 crystallizers

The charging aperture of 31 crystallizers

4 crystallization tank supply pumps

5 crystallizer feed pumps

6 control valves

7 flowmeters

81 first pipelines

82 second pipes

83 the 3rd pipelines

84 the 4th pipelines

85 the 5th pipelines

The specific embodiment

Describe the feed system of crystallizer of the present invention in detail and use the feed process of this device for crystallizer charging below with reference to accompanying drawings and in conjunction with exemplary embodiment.

Shown in Fig. 1 is according to the structural representation of the feed system of the crystallizer of exemplary embodiment of the present invention.Describe the feed system of crystallizer of the present invention in detail and use the feed process of this device for crystallizer charging below with reference to Fig. 1.

With reference to Fig. 1, comprise Recycling Mother Solution groove 1, mother liquor storage tank 2, crystallization tank supply pump 4, crystallizer feed pump 5 and many pipelines according to the feed system of the crystallizer of exemplary embodiment of the present invention.

Recycling Mother Solution groove 1 comprises charging aperture 11 and discharging opening 12 along short transverse, and charging aperture 11 is arranged at the top of Recycling Mother Solution groove 1, and discharging opening 12 is arranged at the bottom of Recycling Mother Solution groove 1.Needing the mother liquor of evaporative crystallization to flow into natural subsidence in Recycling Mother Solution groove 1 the stop process in Recycling Mother Solution groove 1 by the charging aperture 11 of Recycling Mother Solution groove separates.In this case, the mother liquor that proportion is relatively high is deposited on the bottom of Recycling Mother Solution groove 1.Crystallization tank supply pump 4 is arranged at a side of Recycling Mother Solution groove 1, the charging aperture of crystallization tank supply pump 4 is connected with the discharging opening 12 of Recycling Mother Solution groove 1 by the first pipeline 81, and the discharging opening of crystallization tank supply pump 4 is connected with the charging aperture 21 of mother liquor storage tank 2 by second pipe 82.Under this connected mode, crystallization tank supply pump 4 is pumped the mother liquor that is deposited on Recycling Mother Solution groove 1 bottom to mother liquor storage tank 2 by the first pipeline 81 and second pipe 82, can improve like this proportion of the mother liquor that is stored in mother liquor storage tank 2 bottoms, reduce the quantity of steam of the mother liquid evaporation crystallization process in crystallizer 3 and improve the stability that crystallizer 3 operates.According to one exemplary embodiment of the present invention, the charging aperture 11 of Recycling Mother Solution groove 1 is arranged at the top of Recycling Mother Solution groove 1, can increase like this use volume of Recycling Mother Solution groove 1, but the present invention is not limited to this, that is to say, the charging aperture 11 of Recycling Mother Solution groove 1 can be arranged at the position of the discharging opening 12 higher than Recycling Mother Solution groove 1 of arbitrary short transverse of Recycling Mother Solution groove 1.According to another exemplary embodiment of the present invention, the discharging opening of Recycling Mother Solution groove 1 is arranged at the bottom of Recycling Mother Solution groove 1, the relatively heavier mother liquor of proportion of the bottom that is deposited on Recycling Mother Solution groove 1 can be pumped to mother liquor storage tank 2 like this, to improve the proportion of mother liquor storage tank 2 bottom mother liquors, but the present invention is not limited to this, that is to say, the discharging opening 12 of Recycling Mother Solution groove 1 can be arranged at the position of the charging aperture 11 lower than Recycling Mother Solution groove 1 of arbitrary short transverse of Recycling Mother Solution groove 1.

Mother liquor storage tank 2 comprises charging aperture 21 and discharging opening 22 along short transverse, and charging aperture 21 is positioned at the top of mother liquor storage tank 1, and is connected by second pipe 82 with crystallization tank supply pump 4, and discharging opening 22 is positioned at the bottom of mother liquor storage tank 2.By crystallization tank supply pump 4 pump in mother liquor to the mother liquor storage tank 2 stop process in mother liquor storage tank 2 naturally all with and natural subsidence separate, in this case, the mother liquor that proportion is relatively high can be deposited on the bottom of mother liquor accumulator tank 2.Crystallizer feed pump 5 is arranged at a side of mother liquor storage tank 2, and the charging aperture of crystallizer feed pump 5 is connected with the discharging opening 22 of mother liquor storage tank 2 by the 3rd pipeline 83, and the discharging opening of crystallizer feed pump 5 is connected with the charging aperture 31 of crystallizer 3 by the 4th pipeline 84.Under this connected mode, crystallizer feed pump 5 is pumped the mother liquor that is deposited on mother liquor storage tank 2 bottoms to crystallizer 3 by the 3rd pipeline 83 and the 4th pipeline 84, can improve like this proportion of pumping to the mother liquor in crystallizer 2, the quantity of steam that the evaporation and crystal process of the mother liquor in crystallizer 2 is needed reduces, thereby improves the stability that crystallizer 2 operates.In addition, pump the uniformity that there is metastable proportion and can also improve the granularity of the crystal that mother liquor separates out in evaporation and crystal process to the mother liquor in crystallizer 3, improved the quality of crystalline product.According to one exemplary embodiment of the present invention, the charging aperture 21 that is arranged at the top of mother liquor storage tank 2 can increase the use volume of mother liquor storage tank 2, to improve the mother liquid disposal amount of mother liquor storage tank 2, but the present invention is not limited to this, that is to say, the charging aperture 21 of mother liquor storage tank 2 can be arranged at the position of the discharging opening 21 higher than mother liquor storage tank 2 of arbitrary short transverse of mother liquor storage tank 2.

According to exemplary embodiment of the present invention, preferably, the discharging opening of Recycling Mother Solution groove 1 can be connected in more than one crystallization tank supply pump 4 charging aperture 21 of mother liquor storage tank 2 by pipeline, the discharging opening 22 of mother liquor storage tank 2 can be connected in more than one crystallizer feed pump 5 charging aperture 31 of crystallizer 3 by pipeline, like this can at crystallization tank supply pump 4 and/or crystallizer feed pump 5 breaks down and/or connecting pipe occurs to stop up time, device is overhauled and do not affect carrying out smoothly of production.According to one exemplary embodiment of the present invention, the discharging opening with the Recycling Mother Solution groove 1 of three-port structure can be connected to by two pipelines the charging aperture of two crystallization tank supply pumps 4, and by two pipelines, the discharging opening of crystallization tank supply pump 4 is connected with the charging aperture with three-port structure 21 of mother liquor storage tank 2; The discharging opening 22 with the mother liquor storage tank 2 of three-port structure can be connected to by two pipelines the charging aperture of two crystallizer feed pumps 5, and by two pipelines, the discharging opening of crystallizer feed pump 5 is connected with the charging aperture of the crystallizer 3 with three-port structure.But the present invention is not limited to this, that is to say, Recycling Mother Solution groove 1, mother liquor storage tank 2 or crystallizer 3 can arrange more than one charging aperture and/or discharging opening.

According to exemplary embodiment of the present invention, between the charging aperture 21 of the short transverse of mother liquor storage tank 2 and discharging opening 22, overfall 23 can be set, and can be connected to by the 5th pipeline 85 charging aperture 11 of Recycling Mother Solution groove 1, can control like this level stability of mother liquor storage tank 2 and the water balance of whole system.Under these circumstances, the charging aperture 11 of Recycling Mother Solution groove 1 can arrange three-port structure, so that receive the overflow of the mother liquor and the mother liquor storage tank 2 that need evaporative crystallization simultaneously.But the present invention is not limited to this, that is to say, Recycling Mother Solution groove 1 can arrange two charging apertures 11 to receive respectively mother liquor for needing evaporative crystallization and the overflow of mother liquor storage tank 2.

According to exemplary embodiment of the present invention, temperature in Recycling Mother Solution groove 1 can be controlled at 45 ℃~55 ℃, the temperature of mother liquor storage tank 2 can be controlled at 40 ℃~50 ℃, can avoid like this generation of the phenomenon of the mother liquor generation spontaneous nucleation in too low Recycling Mother Solution groove 1 and the mother liquor storage tank 2 causing of temperature.

According to exemplary embodiment of the present invention, preferably, can in mother liquor storage tank 2, be provided with floating ball lever meter, can monitor in real time the mother liquor in mother liquor storage tank 2 like this, to control the level stability of mother liquor storage tank 2 and the water balance of whole system.

According to exemplary embodiment of the present invention, preferably, can in mother liquor storage tank 2, be provided with pressure difference transmitter, can monitor in real time the liquid level pressure reduction of mother liquor storage tank 2 like this.

According to exemplary embodiment of the present invention, preferably, can on the 4th pipeline 84, be provided with control valve 6 and flowmeter 7, in order to monitor and to regulate the flow of the mother liquor in the 4th pipeline 84.

According to one exemplary embodiment of the present invention, preferably, can be at the interior pressure difference transmitter that arranges of mother liquor storage tank 2, control valve 6 and flowmeter 7 are set simultaneously on the 4th pipeline 84, and the pilot signal of the conditioning signal of the signal of pressure difference transmitter, control valve 6 and flowmeter 7 is introduced to DCS system, then realize the automatic adjusting of the 4th flow of pipeline 84 interior mother liquors and the liquid level of mother liquor storage tank 2 by control valve 6.

According to exemplary embodiment of the present invention, according to the disposal ability of crystallizer 3, the feed system of the crystallizer 3 of more than one DTB crystallization processes of the present invention can be set, to improve the treating capacity of crystallizer 3, also can avoid due to arbitrary feed system carrying out smoothly that the process influence that overhauls produces of breaking down simultaneously.

According to exemplary embodiment of the present invention, more than one Recycling Mother Solution groove 1 and more than one mother liquor storage tank 2 can be set between the first pipeline 81 and the 4th pipeline 84, and can be interconnected in the mode of connecting with crystallization tank supply pump 4 by other pipeline, can extend like this mother liquor at Recycling Mother Solution groove 1 and/or mother liquor the natural subsidence disengaging time in mother liquor storage tank 2, improve the stability of proportion of the mother liquor that is delivered to crystallizer 3, further improve the uniformity of the granularity of the stability that crystallizer 3 operates and the crystal of separating out.

Below, describe in detail and use the feed process that said apparatus is crystallizer charging with reference to the accompanying drawings and in conjunction with exemplary embodiment of the present invention.

First, make to need the mother liquor of crystallizer 3 evaporative crystallizations to flow in Recycling Mother Solution groove 1 from the charging aperture 11 of Recycling Mother Solution groove 1, now, the mother liquor in Recycling Mother Solution groove 1 is because difference of specific gravity can produce the phenomenon of AUTOMATIC ZONING.

Secondly, extract mother liquor by crystallization tank supply pump 4 and the first pipeline 81 from the discharging opening 12 that is positioned at Recycling Mother Solution groove 1 bottom, and by second pipe 82, mother liquor is delivered to mother liquor storage tank 2.Now, the mother liquor being delivered in mother liquor storage tank 2 is the lower floor's mother liquor in Recycling Mother Solution groove 1, and can be in mother liquor storage tank 2 again the difference according to proportion produce layering.

Finally, extract mother liquor by crystallizer feed pump 5 and the 3rd pipeline 83 from the discharging opening 22 that is positioned at mother liquor storage tank 2 bottoms, and by the 4th pipeline 84, mother liquor is delivered in crystallizer 3 and carries out evaporative crystallization, now, the mother liquor being delivered in crystallizer 3 is the lower floor's mother liquor in mother liquor storage tank 2.

According to exemplary embodiment of the present invention, mother liquor in mother liquor storage tank 2 is during higher than overfall 23, can the overflow portion in mother liquor storage tank 2 be delivered to Recycling Mother Solution groove 1 by the 5th pipeline 85, so that control the level stability of mother liquor storage tank 2 and the water balance of whole system.

According to exemplary embodiment of the present invention, mother liquor can be ammonium sulfate liquor, but the present invention is not limited to this, that is to say, mother liquor can for example, for needing other solution of evaporative crystallization processing, sodium aluminate solution.

According to exemplary embodiment of the present invention, can monitor and regulate by the control valve 6 of setting on the 4th pipeline 84 and flowmeter 7 flow of the mother liquor in the 4th pipeline 84.

According to exemplary embodiment of the present invention, can monitor in real time the mother liquor in mother liquor storage tank 2 by the floating ball lever meter of mother liquor storage tank 2 interior settings, to control the level stability of mother liquor storage tank 2 and the water balance of whole system.

According to exemplary embodiment of the present invention, can in mother liquor storage tank 2, be provided with pressure difference transmitter, can monitor in real time the liquid level pressure reduction of mother liquor storage tank 2 like this, and the control valve on the 4th pipeline 84 6 and the liquid level signal of pressure difference transmitter monitoring can be carried out to interlocked control, with by the level stability of mother liquor storage tank 2 in precalculated position.

According to the feed system of crystallizer of the present invention and use the feed process of this device for crystallizer charging, can the mother liquor that need evaporative crystallization be carried out to repeatedly layering processing by simple equipment operating, to guarantee that the mother liquor that is delivered to crystallizer has the stability of higher proportion and proportion, the follow-up crystallizer that enters that has reduced mother liquor carries out the required quantity of steam of evaporative crystallization, has improved the stability of crystallizer operation and has improved granularity and the quality of the ammonium sulfate product after evaporative crystallization in crystallizer.

Although described the present invention with reference to specific embodiments and the drawings, will be appreciated that and the invention is not restricted to above embodiment.

Claims (10)

1. a feed system for crystallizer, wherein, described feed system comprises Recycling Mother Solution groove, mother liquor storage tank, crystallizer feed pump, crystallization tank supply pump and many pipelines, wherein,
Recycling Mother Solution groove comprises charging aperture and the discharging opening lower than charging aperture along short transverse;
Mother liquor storage tank comprises charging aperture and the discharging opening lower than charging aperture along short transverse;
The charging aperture of Recycling Mother Solution groove receives the mother liquor that needs evaporative crystallization, the discharging opening of Recycling Mother Solution groove is connected by the first pipeline with the charging aperture of crystallization tank supply pump, the discharging opening of crystallization tank supply pump is connected by second pipe with the charging aperture of mother liquor storage tank, the discharging opening of mother liquor storage tank is connected by the 3rd pipeline with the charging aperture of crystallizer feed pump, and the discharging opening of crystallizer feed pump is connected by the 4th pipeline with the charging aperture of crystallizer.
2. feed system as claimed in claim 1, wherein, mother liquor storage tank also comprises lower than charging aperture and higher than discharging opening overfall along short transverse, and overfall is connected by the 5th pipeline with the charging aperture of Recycling Mother Solution groove, wherein, the charging aperture of Recycling Mother Solution groove is set to three-port structure.
3. feed system as claimed in claim 1 wherein, is provided with control valve and flowmeter on the 4th pipeline.
4. feed system as claimed in claim 1 wherein, is provided with floating ball lever meter in mother liquor storage tank.
5. feed system as claimed in claim 1 wherein, is provided with pressure difference transmitter in mother liquor storage tank.
6. a feed process for the crystallizer of the feed system of use as described in any one claim in claim 1~5, wherein, described feed process comprises the following steps that order is carried out:
Make the mother liquor of crystallization to be evaporated flow into natural subsidence separation in Recycling Mother Solution groove and in Recycling Mother Solution groove from the charging aperture of Recycling Mother Solution groove;
Extract the mother liquor of sedimentation Recycling Mother Solution groove by crystallization tank supply pump from the discharging opening of Recycling Mother Solution groove, and via the charging aperture of mother liquor storage tank, mother liquor is pumped to mother liquor storage tank, mother liquor again carries out sedimentation separation in mother liquor storage tank;
Extract the mother liquor of sedimentation mother liquor storage tank and mother liquor is pumped to crystallizer via the charging aperture of crystallizer from the discharging opening of mother liquor storage tank by crystallizer feed pump.
7. feed process as claimed in claim 6, wherein, mother liquor is ammonium sulfate liquor.
8. feed process as claimed in claim 6, wherein, by being arranged on the flow of the mother liquor in control valve and flowmeter control the 4th pipeline on the 4th pipeline.
9. feed process as claimed in claim 6, wherein, by being arranged on the liquid level of the mother liquor in the floating ball lever meter monitoring mother liquor storage tank in mother liquor storage tank.
10. feed process as claimed in claim 6, wherein, by being arranged on the liquid level pressure reduction in the pressure difference transmitter monitoring mother liquor storage tank in mother liquor storage tank, and the signal that is arranged on the liquid level pressure reduction in the mother liquor storage tank of control valve on the 4th pipeline and pressure difference transmitter monitoring is carried out to interlocked control, with by the level stability of mother liquor storage tank in precalculated position.
CN201410143016.8A 2014-04-10 2014-04-10 The feed system of crystallizer and feed process CN103908797B (en)

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CN103908797B CN103908797B (en) 2015-12-30

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Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03205314A (en) * 1989-12-29 1991-09-06 Nkk Corp Method for controlling grain diameter of ammonium sulfate
CN1255457A (en) * 1998-11-30 2000-06-07 上海梅山(集团)有限公司 Process for purifying and reclaiming regenerated acid in coking plant
CN1431923A (en) * 2000-05-29 2003-07-23 巴斯福股份公司 Device for producing crystals
CN201473332U (en) * 2009-08-28 2010-05-19 合肥宁垣工程技术有限责任公司 Ammonium sulfate concentration device
CN101850990A (en) * 2009-03-30 2010-10-06 张波 Forced oxidation technology
CN201648009U (en) * 2009-12-01 2010-11-24 河南鑫磊煤化集团 Ammonium sulfate crystallization device
US20110038781A1 (en) * 2008-02-01 2011-02-17 Gea Messo Gmbh Method for producing a coarse-grained ammonium sulfate product by crystallization and facility for performing the method
CN103553078A (en) * 2013-11-22 2014-02-05 云南云铝涌鑫铝业有限公司 Technology for preparing ammonium sulfate by high-efficiency ammonia desulphurization and crystallization
CN203529949U (en) * 2013-10-22 2014-04-09 武汉科技大学 Device for dilution crystallization of coked rough ammonium sulfate

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03205314A (en) * 1989-12-29 1991-09-06 Nkk Corp Method for controlling grain diameter of ammonium sulfate
CN1255457A (en) * 1998-11-30 2000-06-07 上海梅山(集团)有限公司 Process for purifying and reclaiming regenerated acid in coking plant
CN1431923A (en) * 2000-05-29 2003-07-23 巴斯福股份公司 Device for producing crystals
US20110038781A1 (en) * 2008-02-01 2011-02-17 Gea Messo Gmbh Method for producing a coarse-grained ammonium sulfate product by crystallization and facility for performing the method
CN101850990A (en) * 2009-03-30 2010-10-06 张波 Forced oxidation technology
CN201473332U (en) * 2009-08-28 2010-05-19 合肥宁垣工程技术有限责任公司 Ammonium sulfate concentration device
CN201648009U (en) * 2009-12-01 2010-11-24 河南鑫磊煤化集团 Ammonium sulfate crystallization device
CN203529949U (en) * 2013-10-22 2014-04-09 武汉科技大学 Device for dilution crystallization of coked rough ammonium sulfate
CN103553078A (en) * 2013-11-22 2014-02-05 云南云铝涌鑫铝业有限公司 Technology for preparing ammonium sulfate by high-efficiency ammonia desulphurization and crystallization

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