CN107434254B - The processing method of waste nitric acid containing aluminium - Google Patents
The processing method of waste nitric acid containing aluminium Download PDFInfo
- Publication number
- CN107434254B CN107434254B CN201610958290.XA CN201610958290A CN107434254B CN 107434254 B CN107434254 B CN 107434254B CN 201610958290 A CN201610958290 A CN 201610958290A CN 107434254 B CN107434254 B CN 107434254B
- Authority
- CN
- China
- Prior art keywords
- nitric acid
- acid containing
- waste nitric
- containing aluminium
- aluminium
- 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.)
- Active
Links
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 229910017604 nitric acid Inorganic materials 0.000 title claims abstract description 69
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 239000002699 waste material Substances 0.000 title claims abstract description 60
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 58
- 239000004411 aluminium Substances 0.000 title claims abstract description 58
- 238000003672 processing method Methods 0.000 title claims abstract description 23
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 31
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 29
- 239000000292 calcium oxide Substances 0.000 claims abstract description 24
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910021502 aluminium hydroxide Inorganic materials 0.000 claims abstract description 21
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 229910021529 ammonia Inorganic materials 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 238000001704 evaporation Methods 0.000 claims abstract description 9
- 230000008020 evaporation Effects 0.000 claims abstract description 9
- 239000007787 solid Substances 0.000 claims abstract description 8
- 238000002425 crystallisation Methods 0.000 claims abstract description 7
- 230000008025 crystallization Effects 0.000 claims abstract description 7
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 230000018044 dehydration Effects 0.000 claims abstract description 4
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 4
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 32
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 22
- 229910002651 NO3 Inorganic materials 0.000 claims description 18
- 238000006386 neutralization reaction Methods 0.000 claims description 11
- 229910052697 platinum Inorganic materials 0.000 claims description 11
- NGLMYMJASOJOJY-UHFFFAOYSA-O azanium;calcium;nitrate Chemical compound [NH4+].[Ca].[O-][N+]([O-])=O NGLMYMJASOJOJY-UHFFFAOYSA-O 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- JLDSOYXADOWAKB-UHFFFAOYSA-N aluminium nitrate Chemical compound [Al+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O JLDSOYXADOWAKB-UHFFFAOYSA-N 0.000 claims description 6
- 239000011575 calcium Substances 0.000 claims description 6
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 6
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 4
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 229910001679 gibbsite Inorganic materials 0.000 claims description 3
- 229910000069 nitrogen hydride Inorganic materials 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims 1
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 claims 1
- 229910001424 calcium ion Inorganic materials 0.000 claims 1
- 150000002500 ions Chemical class 0.000 claims 1
- 239000003337 fertilizer Substances 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 10
- 238000011282 treatment Methods 0.000 abstract description 10
- 150000002828 nitro derivatives Chemical class 0.000 abstract description 8
- 239000006227 byproduct Substances 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 description 3
- -1 aluminium Nitric acid Chemical compound 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- REDXJYDRNCIFBQ-UHFFFAOYSA-N aluminium(3+) Chemical compound [Al+3] REDXJYDRNCIFBQ-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-OUBTZVSYSA-N aluminium-28 atom Chemical compound [28Al] XAGFODPZIPBFFR-OUBTZVSYSA-N 0.000 description 1
- YMUYTQCKKRCJMP-UHFFFAOYSA-N aluminum;calcium;oxygen(2-) Chemical compound [O-2].[Al+3].[Ca+2] YMUYTQCKKRCJMP-UHFFFAOYSA-N 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000002894 chemical waste Substances 0.000 description 1
- 238000007728 cost analysis Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- YPJKMVATUPSWOH-UHFFFAOYSA-N nitrooxidanyl Chemical compound [O][N+]([O-])=O YPJKMVATUPSWOH-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 235000010344 sodium nitrate Nutrition 0.000 description 1
- 239000004317 sodium nitrate Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/34—Preparation of aluminium hydroxide by precipitation from solutions containing aluminium salts
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C1/00—Ammonium nitrate fertilisers
Abstract
The present invention provides the processing method of waste nitric acid containing aluminium described in one kind, comprising: calcium oxide is added in waste nitric acid containing aluminium；After waste nitric acid and calcium oxide homogeneous reaction are stablized to pH value, it is passed through ammonia, the pH value of solution is adjusted to 5~7；Separate solid aluminum hydroxide；Dehydration is evaporated to remaining liq, after appearance to be crystallized, the liquid with crystallization is introduced into evaporation prilling device, produces nitro-compound fertilizer, is discharged after the water being evaporated is cooling.The processing method of waste nitric acid containing aluminium is using the nitro-compound fertilizer of Produced from Waste Nitric Acid containing aluminium and the process route of by-product aluminium hydroxide, entire treatment process is without dangerous technique, disposing technique safety, water can qualified discharge, it is without secondary pollution, while to pollution harmless treatment, resource reasonable utilization has been obtained into.
Description
Technical field
The present invention relates to chemical waste harmless treatments and application technology as the second resource field, contain more particularly, to one kind
Aluminium waste nitric acid processing method.
Background technique
In electrode platinum production process, because of process requirement, use the concentrated nitric acid after blending as passivator, platinum electrode production
After can generate a large amount of waste nitric acid containing aluminium, belong to hazardous waste, what annual the whole country electrode platinum enterprise generated gives up containing aluminium
Nitric acid enormous amount.Therefore, this waste of innoxious, recycling treatment has caused the great attention of many environmentally friendly mechanisms.
The domestic processing method of waste nitric acid containing aluminium generated to electrode platinum has following several at present:
1. calcium aluminate is added in waste nitric acid containing aluminium nitric acid is totally converted as aluminum nitrate, then evaporation production polymerize nitre
Sour aluminium, method energy consumption product dull sale that is high, and producing, it is difficult to extensive to implement.
2. aluminium hydroxide is added in waste nitric acid containing aluminium nitric acid is totally converted as aluminum nitrate, then evaporation production crystallization
Aluminum nitrate, the same method is there are energy consumption height, and the product dull sale produced, it is difficult to extensive the problem of implementing.
3. nitric acid extraction is come out with extraction, and transform into sodium nitrate or ammonium nitrate, remaining liq extracts hydroxide
After aluminium, water discharge, the product which produces belongs to the control of dangerous material country, and total nitrogen is exceeded in water, therefore is difficult to carry out.
4. being directly neutralized acquisition aluminium hydroxide, liquid discharge with alkali, which is currently widely used method,
Although this processing method can neutralize acidity, the total nitrogen in water can be severely exceeded, and water can not qualified discharge.
This hazardous waste (waste nitric acid containing aluminium) has seriously constrained the normal smooth production of electrode platinum enterprise.The current country is still
Without without for electrode platinum enterprise waste nitric acid containing aluminium is innoxious, measure is effectively treated in recycling, scale.
Summary of the invention
For overcome the deficiencies in the prior art, the present invention, which provides, a kind of realizes the innoxious of electrode platinum industry waste nitric acid containing aluminium
Processing and resource utilization and the method for large-scale production.
To achieve the goals above, the processing method of waste nitric acid containing aluminium of the present invention, comprising: be added in waste nitric acid containing aluminium
Calcium oxide carries out neutralization reaction, obtains calcium nitrate and aluminium hydroxide, reaction equation are as follows:
CaO+2HNO3=Ca (NO3)2+H2O
3CaO+2Al(NO3)3+3H2O=3Ca (NO3)2+2Al(OH)3；
After waste nitric acid and calcium oxide homogeneous reaction are stablized to pH value, it is passed through ammonia and carries out neutralization reaction, it will be molten after reaction
The pH value of liquid is adjusted to 5~7, obtains ammonium nitrate and aluminium hydroxide, wherein reaction equation are as follows:
NH3+HNO3=NH4NO3
3NH3+Al(NO3)3+3H2O=3NH4NO3+Al(OH)3；
Separate solid aluminum hydroxide；
Dehydration is evaporated to liquid after separation, after appearance to be crystallized, the liquid with crystallization is introduced into evaporation prilling dress
It sets, produces nitro-compound fertilizer, the cooling discharge of the water being evaporated.
Waste nitric acid containing aluminium is carried out neutralization tune with different neutralizers respectively by the processing method of waste nitric acid containing aluminium of the present invention
Whole, the aluminium hydroxide then filtered out is used for aluminium polychloride technique, filters liquid after concentration and evaporation, and be granulated,
Produce nitro-compound fertilizer, the process route of the nitro-compound fertilizer of Produced from Waste Nitric Acid containing aluminium and by-product aluminium hydroxide, entire treatment process
Without dangerous technique, disposing technique safety, water can qualified discharge, it is without secondary pollution, while to pollution harmless treatment, will provide
Source has obtained reasonable utilization.
Especially, using the electrode platinum enterprise nitro-compound fertilizer of Produced from Waste Nitric Acid containing aluminium, electrode platinum industry had both may be implemented and contained
The harmless treatment of aluminium waste nitric acid can also realize the purpose of its resource utilization.
Detailed description of the invention
By reference to following specific embodiments combination attached drawing, other objects and results of the present invention be will be more apparent and easily
In understanding.In the accompanying drawings:
Fig. 1 is the process flow chart of the processing method of waste nitric acid containing aluminium of the invention.
Specific embodiment
In the following description, for purposes of illustration, it in order to provide the comprehensive understanding to one or more embodiments, explains
Many details are stated.It may be evident, however, that these embodiments can also be realized without these specific details.
In other examples, one or more embodiments for ease of description, well known structure and equipment are shown in block form an.
Each embodiment according to the present invention is described in detail below with reference to accompanying drawings.
Fig. 1 is the process flow chart of the processing method of waste nitric acid containing aluminium of the invention, as shown in Figure 1, at the waste nitric acid containing aluminium
Reason method, comprising:
Calcium oxide is added in waste nitric acid containing aluminium and carries out neutralization reaction, obtains calcium nitrate and aluminium hydroxide, waste nitric acid and oxygen
After change calcium homogeneous reaction is stablized to pH value, it is passed through ammonia and carries out neutralization reaction, the pH value of solution after reaction is adjusted to 5~7, is obtained
To ammonium nitrate and aluminium hydroxide, that is to say, that carry out waste nitric acid containing aluminium with different neutralizers (calcium oxide and ammonia) respectively
Neutralization reaction, for example, waste nitric acid containing aluminium and calcium oxide homogeneous reaction to pH value after 3 or so stablize, ammonia is passed through, with ammonia
The aluminium ion that is passed through in liquid form aluminum hydroxide precipitation, when reaction solution PH terminates in 6 or so reactions, wherein among the above and
The reaction equation of reaction is as follows:
CaO+2HNO3=Ca (NO3)2+H2O
3CaO+2Al(NO3)3+3H2O=3Ca (NO3)2+2Al(OH)3；
NH3+HNO3=NH4NO3
3NH3+Al(NO3)3+3H2O=3NH4NO3+Al(OH)3；
Solid aluminum hydroxide is separated from above-mentioned solution using separating technology again, for example, passing through plate after PH is adjusted to 5~7
Frame filter press, which is filtered, isolates aluminium hydroxide, and carry out cleaning and centrifugal treating, the solid aluminum hydroxide of acquisition use next life
It produces aluminium polychloride (cleaning process and centrifuging process)；
Dehydration (evaporation technology) is evaporated to remaining liq, after appearance to be crystallized, the liquid with crystallization is introduced and is steamed
It sends out prilling granulator (prilling), produces nitro-compound fertilizer, qualified discharge (cooling down) after the cooling collection of the water being evaporated.
Preferably, 0.5%~3%, the content of the aluminium element exists the nitric acid mass content of the waste nitric acid containing aluminium
0.5%~2.5%.
In order to enable waste nitric acid containing aluminium and calcium oxide sufficiently to react and not waste, it is preferable that above-mentioned processing method is also wrapped
Include: the content of nitrate anion in measurement waste nitric acid containing aluminium determines nitre according to the weight of the content of the nitrate anion and the waste nitric acid containing aluminium
The mole of acid group determines the mole of calcium oxide according to the molar ratio of calcium oxide and nitrate anion, so that it is determined that the oxidation being added
The weight of calcium.
In addition, the amount for being passed through ammonia can also be according to the mole of the nitrate anion, according to mole of ammonia and nitrate anion
Than the mole of ammonia being determined, so that it is determined that being passed through the approximate weight of ammonia.
Aluminium hydroxide is cleaned twice, the liquid after first time cleaning, which is applied, neutralizes technique (back to containing the useless nitre of aluminium
Neutralization reaction is carried out in acid), second clean after liquid as blend concentrated nitric acid in electrode platinum production process use water.
In a preferred embodiment of the invention, the nitro-compound fertilizer includes calcium ammonium nitrate 5Ca (NO3) 2
NH4NO310H2O, from the formula above it can be seen that the integral molar quantity of nitrate anion can be divided into 11 parts, wherein reacted with ammonia
The mole of nitrate anion is the 1/11 of integral molar quantity, and the mole of the nitrate anion reacted with calcium oxide is the 10/11 of integral molar quantity,
Since the calcium oxide of 1mol can be reacted with the nitrate anion of 2mol, ammonia and nitrate anion are reaction with same mole, so calcium oxide
The integral molar quantity 5/11 that mole is nitrate anion is added, and ammonia is mole is added and is the integral molar quantity of nitrate anion 1/11.
The spherical calcium ammonium nitrate containing ten crystallizations water can be obtained after matching liquid evaporation adjusted by this.
Example: using above-mentioned processing method to 1020g waste nitric acid containing aluminium (1.08/25 degree of specific gravity, nitric acid mass concentration
2.43%, contain aluminium 0.93%) handled, specifically, comprising:
Step 1, show that the nitrate radical content in the waste nitric acid containing aluminium is 5.62% with titration analysis, therefore in the liquid altogether
It is 0.91mol that have nitrate anion, which be 57.3g, therefore it is 23g calcium oxide that the calcium oxide that should be added, which is 0.91*5/11=0.415mol,
PH is about 1.8 after reaction uniformly；Then the 10% ammonium hydroxide about 14g that mole is 0.91*1/11=0.083mol is added and adjusts PH
It is 6.2, feed liquid becomes having a large amount of white opacity thing from colorless and transparent；
Step 2,40g is obtained after filtering and clean containing water-aluminum hydroxide, and no water-aluminum hydroxide 28g is obtained after drying；
Step 3, remaining liquid merges and evaporates after filtering, obtains ten water calcium ammonium nitrate 58g, evaporates the cooling of generation
Water meets national tertiary effluent discharge standard.
Cost analysis: 1 ton of cost of disposal of waste nitric acid containing aluminium includes: 22.6 kilograms of calcium oxide, 11.3 yuan, 0.9 kilogram of liquefied ammonia,
2.65 yuan, 0.408 ton of steam, 82 yuan, 40 yuan of various incidentals amount to 136 yuan；1 ton of ton Sewage treatment benefit packet of waste nitric acid containing aluminium
28 kilograms of aluminium hydroxide of recycling is included, 56 yuan, 57 kilograms 86 yuan of calcium ammonium nitrate, adds up to 142 yuan.Therefore, useless containing aluminium belonging to the present invention
Nitric acid treatment method has reached harmlessness disposing under the premise of profit, the purpose of resource utilization.
The processing method of waste nitric acid containing aluminium of the present invention, have it is below the utility model has the advantages that
(1) bauxite resource in waste nitric acid containing aluminium is recycled, utilization rate reaches 99% or more；
(2) the nitric acid resource almost all in waste nitric acid containing aluminium is recycled；
(3) aluminium waste nitric acid this dangerous waste will be contained and thoroughly carried out harmless treatment, and reached the mesh of resource utilization
's；
(4) all indexs of the distilled water being evaporated all have exceeded the discharge standard of second level water, and technique is not only secondary
Pollution generates, and water can apply technique, save resource；
(5) the technique output value is more than investment value, and project solves pollution simultaneously, and there are also certain profit margins.
In short, technique calcium ammonium nitrate produced has a safety feature, it is not belonging to dangerous material and is concentrated fertilizer, market capacity
Greatly, there is profit margin, fertilizer efficiency is suitable with urea, can be used as high-quality nitrogenous fertilizer and uses on crops, the aluminium hydroxide isolated can
Produce aluminium polychloride.Resource has been obtained reasonable utilization, solved simultaneously by this technique while to pollution harmless treatment
The exceeded problem of waste water total nitrogen, not only resource is maximally utilized, and recovery value has been more than energy consumption cost, and being can be big
The process route that scale is implemented.
Although content disclosed above shows exemplary embodiment of the present invention, it should be noted that without departing substantially from power
Under the premise of benefit requires the range limited, it may be many modifications and modify.According to the side of inventive embodiments described herein
Function, step and/or the movement of method claim are not required to the execution of any particular order.In addition, although element of the invention can
It is unless explicitly limited individual element it is also contemplated that having multiple elements to be described or be required in the form of individual.
Claims (9)
1. a kind of processing method of waste nitric acid containing aluminium characterized by comprising
Calcium oxide is added in waste nitric acid containing aluminium and carries out neutralization reaction, obtains calcium nitrate and aluminium hydroxide, reaction equation are as follows:
CaO+2HNO3=Ca (NO3)2+H2O
3CaO+2Al(NO3)3+3H2O=3Ca (NO3)2+2Al(OH)3；
Waste nitric acid and calcium oxide homogeneous reaction to pH value are 1.8, are passed through ammonia and carry out neutralization reaction, by waste nitric acid containing aluminium point
Neutralization reaction is not carried out with calcium oxide and the two different neutralizers of ammonia, the pH value of solution after reaction is adjusted to 5~7, is obtained
To ammonium nitrate and aluminium hydroxide, reaction equation are as follows:
NH3+HNO3=NH4NO3
3NH3+Al(NO3)3+3H2O=3NH4NO3+Al(OH)3；
Separate solid aluminum hydroxide；
Dehydration is evaporated to liquid after separation, after appearance to be crystallized, the liquid with crystallization is introduced into evaporation prilling device, it is raw
Calcium ammonium nitrate is produced, the cooling discharge of the water being evaporated.
2. the processing method of waste nitric acid containing aluminium according to claim 1, which is characterized in that further include:
The content for measuring nitrate anion in waste nitric acid containing aluminium, determines nitre according to the weight of the content of the nitrate anion and the waste nitric acid containing aluminium
The mole of acid group determines the mole of calcium oxide according to the molar ratio of calcium oxide and nitrate anion, so that it is determined that the oxygen that should be added
Change calcium weight.
3. the processing method of waste nitric acid containing aluminium according to claim 2, which is characterized in that further include: according to the nitrate anion
Mole the mole of ammonia is determined according to the molar ratio of ammonia and nitrate anion, so that it is determined that being passed through the weight of ammonia.
4. the processing method of waste nitric acid containing aluminium according to claim 1, which is characterized in that the nitric acid matter of the waste nitric acid containing aluminium
Content is measured 0.5%~3%, the content of aluminium element is 0.5%~2.5%.
5. the processing method of waste nitric acid containing aluminium according to claim 1, which is characterized in that further include: when PH is adjusted to 5~7
Afterwards, be filtered by plate and frame filter press and isolate aluminium hydroxide, and carry out cleaning and centrifugal treating, the solid of acquisition use next life
Produce aluminium polychloride.
6. the processing method of waste nitric acid containing aluminium according to claim 5, which is characterized in that further include:
Aluminium hydroxide is cleaned twice, liquid applies neutralization technique after cleaning for the first time, liquid conduct after second of cleaning
That concentrated nitric acid is blent in electrode platinum production process uses water.
7. the processing method of waste nitric acid containing aluminium according to claim 1, which is characterized in that further include after separating aluminium hydroxide
The molar concentration of calcium ion, ammonium ion, nitrate ion in liquid meets the ion concentration proportion of calcium ammonium nitrate, 5Ca
(NO3)2·NH4NO3·10H2O can obtain the spherical calcium ammonium nitrate containing ten crystallizations water after evaporation.
8. the processing method of waste nitric acid containing aluminium according to claim 3, which is characterized in that the calcium ammonium nitrate production process
In, the molar ratio of the calcium oxide and nitrate anion is 5:11, and the molar ratio of the ammonia and nitrate anion is 1:11.
9. the processing method of waste nitric acid containing aluminium according to claim 1, which is characterized in that the separation solid aluminum hydroxide
Method includes isolating solid aluminum hydroxide using plate and frame filter press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610958290.XA CN107434254B (en) | 2016-11-03 | 2016-11-03 | The processing method of waste nitric acid containing aluminium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610958290.XA CN107434254B (en) | 2016-11-03 | 2016-11-03 | The processing method of waste nitric acid containing aluminium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107434254A CN107434254A (en) | 2017-12-05 |
| CN107434254B true CN107434254B (en) | 2019-11-05 |
Family
ID=60458261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610958290.XA Active CN107434254B (en) | 2016-11-03 | 2016-11-03 | The processing method of waste nitric acid containing aluminium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107434254B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109534856B (en) * | 2018-12-21 | 2021-03-05 | 深圳市星河环境技术有限公司 | Method suitable for zero emission of total nitrogen in tin stripping waste liquid |
| CN113382964A (en) * | 2019-04-16 | 2021-09-10 | 斐源有限公司 | Production of high purity alumina and co-product using spent electrolyte from metal-air batteries |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103626351A (en) * | 2012-08-22 | 2014-03-12 | 罗代洪 | Chemical recovery and treatment method for boric acid and organic acid in electrode foil formation waste water |
| CN104945026A (en) * | 2015-06-30 | 2015-09-30 | 乳源瑶族自治县东阳光化成箔有限公司 | Device and production method for producing agriculture calcium ammonium nitrate from dilute nitric acid wastewater |
-
2016
- 2016-11-03 CN CN201610958290.XA patent/CN107434254B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103626351A (en) * | 2012-08-22 | 2014-03-12 | 罗代洪 | Chemical recovery and treatment method for boric acid and organic acid in electrode foil formation waste water |
| CN104945026A (en) * | 2015-06-30 | 2015-09-30 | 乳源瑶族自治县东阳光化成箔有限公司 | Device and production method for producing agriculture calcium ammonium nitrate from dilute nitric acid wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107434254A (en) | 2017-12-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102701256B (en) | Method for preparing granular ammonium sulfate and calcium carbonate by chemical gypsums via low-temperature transformation | |
| CN104609633A (en) | Method and device for utilizing sewage containing ammonia and sodium | |
| CN103553138A (en) | Comprehensive utilization method for separating, concentrating and purifying manganese sulfate, magnesium sulfate and calcium sulfate in high-salt waste water | |
| CN104016322A (en) | Production method for diammonium hydrogen phosphate | |
| CN107434254B (en) | The processing method of waste nitric acid containing aluminium | |
| CN106904642B (en) | A kind of method that magnesium processes handle liquid containing ammonium sulfate technique waste water and recycle magnesium sulfate | |
| CN102079534A (en) | Method for producing cryolite by using fluorine-containing waste residues of electrolytic aluminium | |
| CN102826523A (en) | Method for preparing fertilizer grade ammonium phosphate concentrated solution by utilizing phosphoric acid-nitric acid-acetic acid waste liquor | |
| CN104876248A (en) | Method for preparing potassium sulfate and co-producing ammonium chloride | |
| CN107311878B (en) | Device for recycling glycine waste liquid and method for recycling glycine waste liquid | |
| CN103213991A (en) | Recovery and cyclic utilization technology for electronic-level waste acid mixture | |
| CN1990460A (en) | Comprehensive treatment of glycine crystallization mother liquid | |
| CN202193614U (en) | Processing equipment for concentrating and recycling hydrochloric acid | |
| CN102887530B (en) | Production technique of potassium fluoride | |
| CN105214621A (en) | A kind of preparation method of novel straw cellulose adsorbent | |
| CN105293796A (en) | Method for co-production of sodalumite and gypsum through activated clay production mother liquid | |
| CN103570044A (en) | Method for processing waste mixed liquid of sodium sulfate and ammonium sulfate by using carbonate | |
| CN101134579A (en) | Method for producing ammonium bisulfate and hydrogen chloride by using ammonium chloride and sulfuric acid | |
| CN102897802B (en) | Method for recycling reagent-grade anhydrous sodium sulfate from basic cupric carbonate production waste liquid | |
| CN216073085U (en) | Household garbage incineration fly ash recycling treatment system | |
| Wang et al. | A novel process to recycle the highly concentrated calcium and chloride ions in the gelatin acidification wastewater | |
| CN102502715A (en) | Method for reclaiming reagent-grade anhydrous sodium sulfate from basic nickel carbonate production waste liquor | |
| CN105152447A (en) | Method for treating acrylic acid wastewater and recovering sodium acetate | |
| CN101898953A (en) | Technological research for producing sodium acetate by comprehensively utilizing chemical waste liquid | |
| CN104944397B (en) | A kind of technique that potassium dihydrogen phosphate is prepared by purification of wet process phosphoric acid low cost |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201120 Address after: Jiangning District of Nanjing City, Jiangsu province 211111 streets moling Road No. 12 mo Zhou Patentee after: JIANGSU ZHIJU INTELLECTUAL PROPERTY SERVICE Co.,Ltd. Address before: 226001 Nantong City, Jiangsu province Tongzhou District Zhang Zhi Shan town Sn Tong Industrial Park Patentee before: JIANGSU DECHANG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201221 Address after: No. 705, No. 2 Building, Guantang R&D Center, No. 10 Shuangren Road, Liudong New District, Liuzhou City, Guangxi Zhuang Autonomous Region (Trusted by Liuzhou Gaochuang Business Secretary Co., Ltd.) Patentee after: Liuzhou Shuangcheng Technology Co.,Ltd. Address before: 211111 No. 12, Mazhou East Road, Mau Ling Street, Jiangning District, Nanjing, Jiangsu Patentee before: JIANGSU ZHIJU INTELLECTUAL PROPERTY SERVICE Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210312 Address after: 211111 No. 12, Mazhou East Road, Mau Ling Street, Jiangning District, Nanjing, Jiangsu Patentee after: JIANGSU ZHIJU INTELLECTUAL PROPERTY SERVICE Co.,Ltd. Address before: No. 705, No. 2 Building, Guantang R&D Center, No. 10 Shuangren Road, Liudong New District, Liuzhou City, Guangxi Zhuang Autonomous Region (Trusted by Liuzhou Gaochuang Business Secretary Co., Ltd.) Patentee before: Liuzhou Shuangcheng Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211123 Address after: 362600 No. 60, Xipu community, Yongchun County, Quanzhou City, Fujian Province Patentee after: Lai Kaihui Address before: 211111 No. 12, Mazhou East Road, Mau Ling Street, Jiangning District, Nanjing, Jiangsu Patentee before: JIANGSU ZHIJU INTELLECTUAL PROPERTY SERVICE CO.,LTD. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220121 Address after: Liu'an Development Zone, Yongchun County, Quanzhou City, Fujian Province (east side of Taoxi bridge) Patentee after: Yongchun County Product Quality Inspection Institute Fujian fragrance product quality inspection center, national incense burning product quality supervision and Inspection Center (Fujian) Address before: 362600 No. 60, Xipu community, Yongchun County, Quanzhou City, Fujian Province Patentee before: Lai Kaihui |
|
| TR01 | Transfer of patent right |