CN107056341A - Sulfuric acid monohydrate fertiliser containing magnesium and the method for ammoniacal liquor are produced with ammonium sulfate magnesium sulfate mixed waste liquor - Google Patents

Sulfuric acid monohydrate fertiliser containing magnesium and the method for ammoniacal liquor are produced with ammonium sulfate magnesium sulfate mixed waste liquor Download PDF

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Publication number
CN107056341A
CN107056341A CN201611255208.3A CN201611255208A CN107056341A CN 107056341 A CN107056341 A CN 107056341A CN 201611255208 A CN201611255208 A CN 201611255208A CN 107056341 A CN107056341 A CN 107056341A
Authority
CN
China
Prior art keywords
magnesium
sulfuric acid
acid monohydrate
ammonium sulfate
containing magnesium
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201611255208.3A
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Chinese (zh)
Inventor
沈建中
李梅彤
张柯
孙灿
袁文蛟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
QUZHOU HUAYOU COBALT NEW MATERIAL CO Ltd
Tianjin University of Technology
Zhejiang Huayou Cobalt Co Ltd
Original Assignee
QUZHOU HUAYOU COBALT NEW MATERIAL CO Ltd
Tianjin University of Technology
Zhejiang Huayou Cobalt Co Ltd
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 QUZHOU HUAYOU COBALT NEW MATERIAL CO Ltd, Tianjin University of Technology, Zhejiang Huayou Cobalt Co Ltd filed Critical QUZHOU HUAYOU COBALT NEW MATERIAL CO Ltd
Priority to CN201611255208.3A priority Critical patent/CN107056341A/en
Publication of CN107056341A publication Critical patent/CN107056341A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
    • C05D5/00—Fertilisers containing magnesium
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C1/00—Ammonia; Compounds thereof
    • C01C1/02—Preparation, purification or separation of ammonia
    • C01C1/026—Preparation of ammonia from inorganic compounds

Abstract

A kind of method that use ammonium sulfate magnesium sulfate mixed waste liquor produces water magnesium sulfuric acid fertilizer and ammoniacal liquor, the present invention provides a kind of use ammonium sulfate magnesium sulfate mixed waste liquor production sulfuric acid monohydrate fertiliser containing magnesium and the method for ammoniacal liquor, this method uses light-magnesite powder as ammonia still process agent, ammonia components reclaim ammoniacal liquor, magnesium ion production sulfuric acid monohydrate fertiliser containing magnesium in solution；Present invention process is easy, cost is low, without pollutant emission, each composition of waste liquid all recyclings；The present invention is adapted to nitrogen-containing wastewater recycling simultaneously, is particularly adapted to the composite waste disposal of resources of ammonia containing magnesium；There are significant techno-economic effect and huge social benefit.

Description

Sulfuric acid monohydrate fertiliser containing magnesium and the method for ammoniacal liquor are produced with ammonium sulfate magnesium sulfate mixed waste liquor
Technical field
The present invention relates to a kind of use ammonium sulfate magnesium sulfate mixed waste liquor production sulfuric acid monohydrate fertiliser containing magnesium and the method for ammoniacal liquor, belong to Resource and environment filed.
Background technology
Chemical industry and hydrometallurgy industry widely use ammonia, magnesium hydroxide etc. as precipitating reagent or nertralizer, production process meeting By-product largely contains ammonium sulfate, magnesium sulfate mixed waste liquor, and this part mixed waste liquor is higher to the solubility of magnesium due to ammonia, ammonium sulfate Magnesium sulfate cocrystallization property, it is difficult to which low cost is efficiently separated by way of Crystallization Separation, and mixture lacks the market demand.Mesh Preceding typical technique is, using oxidation Calcium treatment, to evaporate the ammonia a large amount of calcium sulfate of by-product, magnesium hydroxide and calcium hydroxide simultaneously Mixed sludge, it is not only costly, immense pressure is made to enterprise, the secondary pollution of environment is also resulted in.Also have using hydrogenation oxygen Change the method for sodium deamination, cost is very high, and waste water is still difficult to handle.Therefore inexpensive disposal of resources ammonium sulfate magnesium sulfate gives up Liquid, significant to chemical industry and metallurgy industry, social benefit is notable.
The content of the invention
It is mixed there is provided one kind ammonium sulfate magnesium sulfate the present invention seeks to there is problem for the disposal of ammonium sulfate magnesium sulfate waste liquid Waste liquid production sulfuric acid monohydrate fertiliser containing magnesium and the method for ammoniacal liquor are closed, this method uses light-magnesite powder as ammonia still process agent, ammonia in solution Component reclaims ammoniacal liquor, magnesium ion production sulfuric acid monohydrate fertiliser containing magnesium；Present invention process is easy, cost is low, without pollutant emission, society Benefit and remarkable in economical benefits.
Technical scheme：
A kind of method that use ammonium sulfate magnesium sulfate mixed waste liquor produces water magnesium sulfuric acid fertilizer and ammoniacal liquor, step is as follows：
1) magnesium sulfate ammonium sulfate mixed waste liquor ammonia still process
Magnesium sulfate ammonium sulfate mixed waste liquor is added in reactor, stirring is opened, magnesia powder is added, steam heating is passed through Be 90-110 DEG C to temperature, the ammonia that reaction is produced goes out reactor and produces ammoniacal liquor into absorption tower, obtained mixed solution into It is divided into silicon a small amount of in magnesium sulfate and light-burning magnesium powder, calcium impurities；
2) sulfuric acid monohydrate fertiliser containing magnesium evaporative crystallization
Will come from step 1) the mixed solution containing magnesium sulfate enter evaporator, 80-120 DEG C evaporate moisture, when molten When mass crystallization occurs in liquid, stop evaporating and carrying out separation of solid and liquid, solid content is sulfuric acid monohydrate fertiliser containing magnesium wet product, and liquid returns to evaporation Device continues to evaporate；
3) sulfuric acid monohydrate fertiliser containing magnesium drying and packaging
By step 2) made from sulfuric acid monohydrate fertiliser containing magnesium wet product, at 100-400 DEG C dry 10-60 minutes, obtain meeting state Family standard GB/T26568-2011 sulfuric acid monohydrate fertiliser containing magnesium.
The step 1) in during magnesia powder is light calcined magnesia or magnesium hydroxide, magnesia powder (in terms of MgO) and solution The mol ratio of ammonia is 1：0.5-2.
It is an advantage of the invention that：
This method flow is simple, small investment, operating cost are low, each composition of waste liquid all recyclings；The present invention is fitted simultaneously The composite waste disposal of resources of ammonia containing magnesium should be particularly adapted in nitrogen-containing wastewater recycling；There is significant techno-economic effect With huge social benefit.
Brief description of the drawings
Fig. 1 is present invention process flow chart.
Embodiment
Following examples are not for purposes of illustration only, be construed as limiting the invention.
Embodiment 1：
A kind of method that use ammonium sulfate magnesium sulfate mixed waste liquor produces water magnesium sulfuric acid fertilizer and ammoniacal liquor, step is as follows：
1) magnesium sulfate ammonium sulfate mixed waste liquor ammonia still process
Magnesium sulfate ammonium sulfate mixed waste liquor is added in reactor, opens and stirs, metered light-magnesite powder, wherein Add MgO and NH in solution3Mol ratio is 1：1；It is passed through and is steam heated to temperature for 99 DEG C, ammonia goes out reactor and enters absorption tower Ammoniacal liquor is produced, solution is the impurity such as silicon, calcium a small amount of in magnesium sulfate and light-burning magnesium powder；
2) sulfuric acid monohydrate fertiliser containing magnesium evaporative crystallization
Step 1 will be come from) Adlerika enter evaporator, evaporate moisture at 110 DEG C, mass crystallization occurs in solution When, stop evaporating and carrying out separation of solid and liquid, solid content is sulfuric acid monohydrate fertiliser containing magnesium wet product；Liquid Returning evaporimeter continues to evaporate；
3) sulfuric acid monohydrate fertiliser containing magnesium drying and packaging
By step 2) made from sulfuric acid monohydrate fertiliser containing magnesium wet product, at 200 DEG C dry 30 minutes, obtain meeting national standard The sulfuric acid monohydrate fertiliser containing magnesium of GB/T26568-2011 quality requirements.
Fig. 1 is present invention process flow chart.
Embodiment 2：
A kind of method that use ammonium sulfate magnesium sulfate mixed waste liquor produces water magnesium sulfuric acid fertilizer and ammoniacal liquor, step is as follows：
1) magnesium sulfate ammonium sulfate mixed waste liquor ammonia still process
Magnesium sulfate ammonium sulfate mixed waste liquor is added in reactor, opens and stirs, metered light-magnesite powder, wherein It is 1 that MgO, which is added, with NH3 mol ratios in solution：0.9；It is 105 DEG C to be passed through and be steam heated to temperature, and ammonia goes out reactor and enters suction Receive tower and produce ammoniacal liquor, solution is the impurity such as silicon, calcium a small amount of in magnesium sulfate and light-burning magnesium powder；
2) sulfuric acid monohydrate fertiliser containing magnesium evaporative crystallization
Step 1 will be come from) Adlerika enter evaporator, evaporate moisture at 112 DEG C, mass crystallization occurs in solution When, stop evaporating and carrying out separation of solid and liquid, solid content is sulfuric acid monohydrate fertiliser containing magnesium wet product；Liquid Returning evaporimeter continues to evaporate；
3) sulfuric acid monohydrate fertiliser containing magnesium drying and packaging
By step 2) made from sulfuric acid monohydrate fertiliser containing magnesium wet product, at 200 DEG C dry 30 minutes, obtain meeting national standard The sulfuric acid monohydrate fertiliser containing magnesium of GB/T26568-2011 quality requirements.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow person skilled in the art Scholar can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all according to the present invention The equivalent change or modification that Spirit Essence is made, should all be included within the scope of the present invention.

Claims (2)

1. a kind of method that use ammonium sulfate magnesium sulfate mixed waste liquor produces water magnesium sulfuric acid fertilizer and ammoniacal liquor, it is characterised in that step is such as Under：
1) magnesium sulfate ammonium sulfate mixed waste liquor ammonia still process
Magnesium sulfate ammonium sulfate mixed waste liquor is added in reactor, stirring is opened, magnesia powder is added, is passed through and is steam heated to temperature Spend for 90-110 DEG C, the ammonia that reaction is produced goes out reactor and produces ammoniacal liquor into absorption tower, and the composition of obtained mixed solution is A small amount of silicon, calcium impurities in magnesium sulfate and light-burning magnesium powder；
2) sulfuric acid monohydrate fertiliser containing magnesium evaporative crystallization
Will come from step 1) the mixed solution containing magnesium sulfate enter evaporator, 80-120 DEG C evaporate moisture, when solution goes out During existing mass crystallization, stop evaporating and simultaneously carry out separation of solid and liquid, solid content is sulfuric acid monohydrate fertiliser containing magnesium wet product, liquid Returning evaporimeter after Continuous evaporation；
3) sulfuric acid monohydrate fertiliser containing magnesium drying and packaging
By step 2) made from sulfuric acid monohydrate fertiliser containing magnesium wet product, at 100-400 DEG C dry 10-60 minutes, obtain meeting national mark Quasi- GB/T26568-2011 sulfuric acid monohydrate fertiliser containing magnesium.
2. the method for water magnesium sulfuric acid fertilizer and ammoniacal liquor is produced with ammonium sulfate magnesium sulfate mixed waste liquor according to claim 1, its It is characterised by：The step 1) in during magnesia powder is light calcined magnesia or magnesium hydroxide, magnesia powder (in terms of MgO) and solution The mol ratio of ammonia is 1：0.5-2.
CN201611255208.3A 2016-12-30 2016-12-30 Sulfuric acid monohydrate fertiliser containing magnesium and the method for ammoniacal liquor are produced with ammonium sulfate magnesium sulfate mixed waste liquor Pending CN107056341A (en)

Priority Applications (1)

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CN201611255208.3A CN107056341A (en) 2016-12-30 2016-12-30 Sulfuric acid monohydrate fertiliser containing magnesium and the method for ammoniacal liquor are produced with ammonium sulfate magnesium sulfate mixed waste liquor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611255208.3A CN107056341A (en) 2016-12-30 2016-12-30 Sulfuric acid monohydrate fertiliser containing magnesium and the method for ammoniacal liquor are produced with ammonium sulfate magnesium sulfate mixed waste liquor

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CN107056341A true CN107056341A (en) 2017-08-18

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108396158A (en) * 2018-02-24 2018-08-14 宁夏天元锰业有限公司 A kind of processing method of the complex salt crystal object of electrolytic manganese process

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08132064A (en) * 1994-11-09 1996-05-28 Shinko Kagaku Kogyo Kk Treatment of waste water
CN1544331A (en) * 2003-11-14 2004-11-10 天津市昌昊化工股份合作公司 Magnesium sulfate production method using magnesium oxide and desulfurated waste fluid

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08132064A (en) * 1994-11-09 1996-05-28 Shinko Kagaku Kogyo Kk Treatment of waste water
CN1544331A (en) * 2003-11-14 2004-11-10 天津市昌昊化工股份合作公司 Magnesium sulfate production method using magnesium oxide and desulfurated waste fluid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108396158A (en) * 2018-02-24 2018-08-14 宁夏天元锰业有限公司 A kind of processing method of the complex salt crystal object of electrolytic manganese process

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Application publication date: 20170818