CN103570154A - System for reusing purified dilute acid - Google Patents

System for reusing purified dilute acid Download PDF

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Publication number
CN103570154A
CN103570154A CN201210281982.7A CN201210281982A CN103570154A CN 103570154 A CN103570154 A CN 103570154A CN 201210281982 A CN201210281982 A CN 201210281982A CN 103570154 A CN103570154 A CN 103570154A
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CN
China
Prior art keywords
dilute acid
diluted
water supply
acid
purification
Prior art date
Application number
CN201210281982.7A
Other languages
Chinese (zh)
Inventor
不公告发明人
Original Assignee
安阳市岷山有色金属有限责任公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 安阳市岷山有色金属有限责任公司 filed Critical 安阳市岷山有色金属有限责任公司
Priority to CN201210281982.7A priority Critical patent/CN103570154A/en
Publication of CN103570154A publication Critical patent/CN103570154A/en

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Abstract

The invention relates to a system for reusing a purified dilute acid. The system comprises a purification circulating tank, a sedimentation tank, a filter press, a filtered liquid tank and a water supply system, wherein the dilute acid is produced when smelting flue gas is cooled and purified in the purification circulating tank, the dilute acid is neutralized with lime milk in the sedimentation tank and then subject to sedimentation, then the dilute acid is subject to filter pressing in the filter press to form a filter cake, and filtered liquid obtained by filter pressing in the filter press enters the filtered liquid tank; the anti-corrosive tower-free water supply system is additionally arranged behind the filtered liquid tank and used for enabling the filtered liquid after filter pressing to return into the purification circulating tank. The system for reusing the purified dilute acid, provided by the invention, can fully recycle the dilute acid after purification treatment, reduce the waste of resources and increase economic benefits of an enterprise.

Description

Purification diluted sulfric acid reclaiming system
Technical field
The present invention relates to nonferrous metallurgy field, be specially a kind of purification diluted sulfric acid reclaiming system.
Background technology
In nonferrous metallurgy field, during flue gas during smelting process cooling and purifying, produce diluted acid, traditional method is that this part diluted acid vulcanizes removal of impurities, lime slurry neutralization to emission standard, emits.
Fig. 1 is purification section dilute acid pretreatment flow process of the prior art, flue gas during smelting produces diluted acid during cooling and purifying in decontamination cycle groove, described diluted acid carries out sedimentation in subsider He after lime slurry neutralization, enter afterwards press filtration in pressure filter and become filter cake, and the cleaner liquid leaching in pressure filter after filtration clear liquid groove discharge outward.
Purification section is when normal production, and the outer discharge capacity of diluted acid is 7-10m3 per hour, and the outer row of a large amount of diluted acids has brought certain operational difficulties to next procedure, and has wasted a large amount of water resourcess, and water resources cannot be recycled.
Summary of the invention
The object of the present invention is to provide a kind of purification diluted sulfric acid reclaiming system, to reduce the waste of resource, reduce processing cost simultaneously.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of purification diluted sulfric acid reclaiming system, comprise decontamination cycle groove, subsider, pressure filter, filtering liquid bath, it is characterized in that, also comprise a waterworks, flue gas during smelting produces diluted acid during cooling and purifying in decontamination cycle groove, described diluted acid carries out sedimentation in subsider He after lime slurry neutralization, enters afterwards press filtration in pressure filter and becomes filter cake, and the cleaner liquid being press-filtered out in pressure filter enters filtering liquid bath; In filtering liquid bath back, add a rot-resistant non-tower water supply system, allow the filtering after press filtration come back to decontamination cycle groove night; Described non-tower water supply system reduces the concentration of diluted acid for supplementing tap water, so just can not cause circulation fluid concentration saturated.
Further, described non-tower water supply system comprises a pump and a filling.
Purification diluted sulfric acid reclaiming system of the present invention, can fully recycle the diluted acid after purifying treatment, reduces wasting of resources ,Wei enterprise and increases economic benefit.
Accompanying drawing explanation
Fig. 1 is purification section dilute acid pretreatment flow process of the prior art.
Fig. 2 is purification section dilute acid pretreatment flow process of the present invention.
Embodiment
As shown in Figure 2, a kind of purification diluted sulfric acid reclaiming system, comprise decontamination cycle groove, subsider, pressure filter, filtering liquid bath, it is characterized in that, also comprise a waterworks, flue gas during smelting produces diluted acid during cooling and purifying in decontamination cycle groove, and described diluted acid carries out sedimentation in subsider He after lime slurry neutralization, enter afterwards press filtration in pressure filter and become filter cake, the cleaner liquid being press-filtered out in pressure filter enters filtering liquid bath; In filtering liquid bath back, add a rot-resistant non-tower water supply system, allow the filtering after press filtration come back to decontamination cycle groove night; Described non-tower water supply system reduces the concentration of diluted acid for supplementing tap water, so just can not cause circulation fluid concentration saturated.Described non-tower water supply system comprises a pump and a filling.

Claims (2)

1. a purification diluted sulfric acid reclaiming system, comprise decontamination cycle groove, subsider, pressure filter, filtering liquid bath, it is characterized in that, also comprise a waterworks, flue gas during smelting produces diluted acid during cooling and purifying in decontamination cycle groove, described diluted acid carries out sedimentation in subsider He after lime slurry neutralization, enters afterwards press filtration in pressure filter and becomes filter cake, and the cleaner liquid being press-filtered out in pressure filter enters filtering liquid bath; In filtering liquid bath back, add a rot-resistant non-tower water supply system, allow the filtering after press filtration come back to decontamination cycle groove night; Described non-tower water supply system reduces the concentration of diluted acid for supplementing tap water, so just can not cause circulation fluid concentration saturated.
2. purification diluted sulfric acid reclaiming system as claimed in claim 1, is characterized in that, described non-tower water supply system comprises a pump and a filling.
CN201210281982.7A 2012-08-09 2012-08-09 System for reusing purified dilute acid CN103570154A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210281982.7A CN103570154A (en) 2012-08-09 2012-08-09 System for reusing purified dilute acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210281982.7A CN103570154A (en) 2012-08-09 2012-08-09 System for reusing purified dilute acid

Publications (1)

Publication Number Publication Date
CN103570154A true CN103570154A (en) 2014-02-12

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CN201210281982.7A CN103570154A (en) 2012-08-09 2012-08-09 System for reusing purified dilute acid

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103566655A (en) * 2012-08-10 2014-02-12 安阳市岷山有色金属有限责任公司 Purified diluted acid recycling technological process
CN104261356A (en) * 2014-09-09 2015-01-07 安徽省司尔特肥业股份有限公司 Dilute acid purification technique

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11130437A (en) * 1997-10-22 1999-05-18 Furukawa Co Ltd Treatment of waste acid
CN201543331U (en) * 2009-11-16 2010-08-11 灵宝市金源矿业有限责任公司 Smelting purification diluted-acid recycling system
CN102010082A (en) * 2010-09-29 2011-04-13 南京梅山冶金发展有限公司 Treatment method for recycling waste dilute sulfuric acid
CN201882908U (en) * 2010-11-30 2011-06-29 东营方圆有色金属有限公司 Device for condensing and purifying diluted acid by using afterheat of flue gas generated by smelting non-ferrous metal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11130437A (en) * 1997-10-22 1999-05-18 Furukawa Co Ltd Treatment of waste acid
CN201543331U (en) * 2009-11-16 2010-08-11 灵宝市金源矿业有限责任公司 Smelting purification diluted-acid recycling system
CN102010082A (en) * 2010-09-29 2011-04-13 南京梅山冶金发展有限公司 Treatment method for recycling waste dilute sulfuric acid
CN201882908U (en) * 2010-11-30 2011-06-29 东营方圆有色金属有限公司 Device for condensing and purifying diluted acid by using afterheat of flue gas generated by smelting non-ferrous metal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103566655A (en) * 2012-08-10 2014-02-12 安阳市岷山有色金属有限责任公司 Purified diluted acid recycling technological process
CN104261356A (en) * 2014-09-09 2015-01-07 安徽省司尔特肥业股份有限公司 Dilute acid purification technique

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Application publication date: 20140212