CN110316891A - A kind of preparation method of H acid waste water extraction process and modified aliphatic water reducing agent - Google Patents
A kind of preparation method of H acid waste water extraction process and modified aliphatic water reducing agent Download PDFInfo
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- CN110316891A CN110316891A CN201910227803.3A CN201910227803A CN110316891A CN 110316891 A CN110316891 A CN 110316891A CN 201910227803 A CN201910227803 A CN 201910227803A CN 110316891 A CN110316891 A CN 110316891A
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- waste water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 239000002351 wastewater Substances 0.000 title claims abstract description 32
- 125000001931 aliphatic group Chemical group 0.000 title claims abstract description 25
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 17
- 238000003809 water extraction Methods 0.000 title claims abstract description 17
- APRRQJCCBSJQOQ-UHFFFAOYSA-N 4-amino-5-hydroxynaphthalene-2,7-disulfonic acid Chemical compound OS(=O)(=O)C1=CC(O)=C2C(N)=CC(S(O)(=O)=O)=CC2=C1 APRRQJCCBSJQOQ-UHFFFAOYSA-N 0.000 title abstract 6
- 239000007788 liquid Substances 0.000 claims abstract description 41
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 30
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 26
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 19
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 19
- 238000006482 condensation reaction Methods 0.000 claims abstract description 18
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 14
- 238000000605 extraction Methods 0.000 claims abstract description 12
- 238000004064 recycling Methods 0.000 claims abstract description 8
- 230000007062 hydrolysis Effects 0.000 claims abstract description 7
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 7
- 239000012263 liquid product Substances 0.000 claims abstract description 7
- 235000010265 sodium sulphite Nutrition 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 7
- QPILZZVXGUNELN-UHFFFAOYSA-M sodium;4-amino-5-hydroxynaphthalene-2,7-disulfonate;hydron Chemical compound [Na+].OS(=O)(=O)C1=CC(O)=C2C(N)=CC(S([O-])(=O)=O)=CC2=C1 QPILZZVXGUNELN-UHFFFAOYSA-M 0.000 claims description 48
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 24
- 238000010792 warming Methods 0.000 claims description 16
- 239000000376 reactant Substances 0.000 claims description 12
- 230000035484 reaction time Effects 0.000 claims description 12
- 150000003839 salts Chemical class 0.000 claims description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- KBPLFHHGFOOTCA-UHFFFAOYSA-N 1-Octanol Chemical compound CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 claims description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 3
- 238000002425 crystallisation Methods 0.000 claims description 3
- 230000008025 crystallization Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 230000008020 evaporation Effects 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 239000003350 kerosene Substances 0.000 claims description 3
- XTAZYLNFDRKIHJ-UHFFFAOYSA-N n,n-dioctyloctan-1-amine Chemical compound CCCCCCCCN(CCCCCCCC)CCCCCCCC XTAZYLNFDRKIHJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910017435 S2 In Inorganic materials 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 8
- 238000006277 sulfonation reaction Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000002156 mixing Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 150000002790 naphthalenes Chemical class 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 2
- UBDHSURDYAETAL-UHFFFAOYSA-N 8-aminonaphthalene-1,3,6-trisulfonic acid Chemical compound OS(=O)(=O)C1=CC(S(O)(=O)=O)=C2C(N)=CC(S(O)(=O)=O)=CC2=C1 UBDHSURDYAETAL-UHFFFAOYSA-N 0.000 description 1
- SJEYSFABYSGQBG-UHFFFAOYSA-M Patent blue Chemical compound [Na+].C1=CC(N(CC)CC)=CC=C1C(C=1C(=CC(=CC=1)S([O-])(=O)=O)S([O-])(=O)=O)=C1C=CC(=[N+](CC)CC)C=C1 SJEYSFABYSGQBG-UHFFFAOYSA-M 0.000 description 1
- 239000000980 acid dye Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000985 reactive dye Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B24/00—Use of organic materials as active ingredients for mortars, concrete or artificial stone, e.g. plasticisers
- C04B24/16—Sulfur-containing compounds
- C04B24/20—Sulfonated aromatic compounds
- C04B24/22—Condensation or polymerisation products thereof
- C04B24/226—Sulfonated naphtalene-formaldehyde condensation products
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C303/00—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides
- C07C303/32—Preparation of esters or amides of sulfuric acids; Preparation of sulfonic acids or of their esters, halides, anhydrides or amides of salts of sulfonic acids
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/26—Treatment of water, waste water, or sewage by extraction
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/30—Water reducers, plasticisers, air-entrainers, flow improvers
- C04B2103/302—Water reducers
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Removal Of Specific Substances (AREA)
- Physical Water Treatments (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses the preparation methods of a kind of H acid waste water extraction process and modified aliphatic water reducing agent, wherein H acid waste water extraction process adjusts pH value using the concentrated sulfuric acid to H acid waste water, and the extraction of useless H acid complex is carried out by extractant, it is stripped subsequently through strippant, obtains sodium sulphate content lower than 10% useless H acid-base property liquid below and recycling extractant；Recycling extractant can be repeated for H acid waste water extraction process, and useless H acid-base property liquid just can be used for the preparation of following modified aliphatic water reducing agents；To sodium sulfite hydrolysis occurs for the preparation of modified aliphatic water reducing agent, useless H acid-base property liquid is added, sulfonating reaction occurs, and is added dropwise to formaldehyde and carries out condensation reaction, the final modified aliphatic water reducing agent liquid product for obtaining solid content and being 35~45%.
Description
Technical field
The present invention relates to technical field of waste water processing, specially a kind of H acid waste water extraction process and modified aliphatic subtract
The preparation method of aqua.
Background technique
H acid intermediate is the important source material in the Dyestuff synthesis such as reactive dye, acid dyes extremely, however its production process
In, can generate T acid waste water and H acid waste water, current processing method be by conventional extraction process, can will be organic inside it
Object is highly concentrated together, but since newly generated sodium sulphate, and content still can be carried secretly during extraction is with back extraction
It is higher, generally above 15%, this higher organic matter of sodium sulphate content can bring difficulty to subsequent comprehensive utilization, this is just
Many enterprises are resulted in be unwilling the highly concentrated organic matter of waste water provided using H acid manufacturing enterprise.
Summary of the invention
The purpose of the present invention is to provide the preparation sides of a kind of H acid waste water extraction process and modified aliphatic water reducing agent
Method, to solve the problems mentioned in the above background technology.
To achieve the above object, the invention provides the following technical scheme:
A kind of H acid waste water extraction process, including the following steps:
200~290 parts of H acid waste water is added in S1, in the reactor, with 3~10 parts of regulation system pH of the concentrated sulfuric acid, by system
PH is adjusted to 1.3~1.7；
S2,350~450 parts of extractant are added, mixed, stood；
S3, liquid and useless H acid complex containing inorganic salts are isolated, completes extraction, obtain useless H acid complex；
S4,15~35 parts of strippant are prepared, useless H acid network is added by 5~7 parts of strippant and with the water of aliquot
It closes in object, mixes, stand, the liquid of separating sodium sulfate；
S5, remaining strippant is continuously added, is mixed, stood, separating sodium sulfate content is lower than 10% useless H below
Acid-base property liquid and recycling extractant.
As a preferred technical solution of the present invention, in the step S2, extractant is by trioctylamine, sulfonated kerosene and just
Octanol composition.
As a preferred technical solution of the present invention, in the step S3, the liquid of inorganic salts by triple effect evaporation or
MVR evaporates to obtain inorganic salts crystallization.
As a preferred technical solution of the present invention, in the step S4, strippant is made of sodium hydroxide and water.
The present invention also provides a kind of preparation method of modified aliphatic water reducing agent, including the following steps:
S1,10~30 parts of sodium sulfite are added into reaction kettle, 40~60 parts of water, are warming up to 40~50 DEG C, are hydrolyzed
Reaction obtains reaction solution one；
S2, useless 10~30 parts of H acid-base property liquid is added into reaction solution one, 10~30 parts of acetone, is warming up to 50~60 DEG C,
Sulfonating reaction is carried out, reactant two is obtained；
S3,40~70 parts of 37% formaldehyde is added dropwise into reactant two, temperature control is to 50~70 DEG C；After completion of dropwise addition, heating
To 90~100 DEG C, condensation reaction is carried out, obtains the modified aliphatic water reducing agent liquid product that solid content is 35~45%.
As a preferred technical solution of the present invention, in the step S1, hydrolysis time is 0.5~2 hour.
As a preferred technical solution of the present invention, in the step S2, the sulfonating reaction time is 1~3 hour.
As a preferred technical solution of the present invention, in the step S3, condensation reaction time is 3-7 hours.
Compared with prior art, the beneficial effects of the present invention are: a kind of H acid waste water extraction process of the present invention and modified rouge
The preparation method of fat race water-reducing agent, the present invention pass through H acid waste water in the process modification in traditional back extraction stage first, effectively solve
It has determined the excessively high problem of sodium sulphate content in useless H acid-base property liquid, so that sodium sulphate content is lower than in useless H acid-base property liquid
10%, it is created condition to allow useless H acid-base property liquid to participate in acetone, acetone sulfonated bodies, formaldehyde condensation reaction；Utilize useless H soda acid
Property liquid in containing hydroxyl or contain amino on sulfonation naphthalene nucleus, under alkaline condition, carry out condensation reaction, and not shadow with formaldehyde
Being normally carried out for acetone sulfonated bodies condensation reaction is rung, can be effectively condensed in the molecular structure of aliphatic water reducing agent；
To realize the sustainability to turn waste into wealth production, really solve in H acid production process, generated H acid waste water may
Pollution on the environment, so that H acid industrialized production is integrated, the development of sustainability.
Specific embodiment
The following is a clear and complete description of the technical scheme in the embodiments of the invention, it is clear that described embodiment
Only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
The present invention provides a kind of technical solution: a kind of H acid waste water extraction process, including the following steps:
200~290 parts of H acid waste water is added in S1, in the reactor, with 3~10 parts of regulation system pH of the concentrated sulfuric acid, by system
PH is adjusted to 1.3~1.7；
S2,350~450 parts of extractant are added, mixed, stood；
S3, liquid and useless H acid complex containing inorganic salts are isolated, completes extraction, obtain useless H acid complex；
S4,15~35 parts of strippant are prepared, useless H acid network is added by 5~7 parts of strippant and with the water of aliquot
It closes in object, mixes, stand, the liquid of separating sodium sulfate；
S5, remaining strippant is continuously added, is mixed, stood, separating sodium sulfate content is lower than 10% useless H below
Acid-base property liquid and recycling extractant.
In the step S2, extractant is made of trioctylamine, sulfonated kerosene and n-octyl alcohol.
In the step S3, the liquid of inorganic salts evaporates to obtain inorganic salts crystallization by triple effect evaporation or MVR.
In the step S4, strippant is made of sodium hydroxide and water.
The present invention also provides a kind of preparation method of modified aliphatic water reducing agent, including the following steps:
S1,10~30 parts of sodium sulfite are added into reaction kettle, 40~60 parts of water, are warming up to 40~50 DEG C, are hydrolyzed
Reaction obtains reaction solution one；
S2, useless 10~30 parts of H acid-base property liquid is added into reaction solution one, 10~30 parts of acetone, is warming up to 50~60 DEG C,
Sulfonating reaction is carried out, reactant two is obtained；
S3,40~70 parts of 37% formaldehyde is added dropwise into reactant two, temperature control is to 50~70 DEG C；After completion of dropwise addition, heating
To 90~100 DEG C, condensation reaction is carried out, obtains the modified aliphatic water reducing agent liquid product that solid content is 35~45%.
In the step S1, hydrolysis time is 0.5~2 hour.
In the step S2, the sulfonating reaction time is 1~3 hour.
In the step S3, condensation reaction time is 3-7 hours.
Embodiment 1:
A kind of H acid waste water extraction process, includes the following steps:
S1, in the reactor is added 240 parts of H acid waste water and is adjusted to system pH with 7 parts of regulation system pH of the concentrated sulfuric acid
1.5；
S2,380 parts of extractant are added, mixed, stood；
S3, liquid and useless H acid complex containing inorganic salts are isolated, completes extraction, obtain useless H acid complex；
S4,30 parts of strippant are prepared, are added in useless H acid complex by 6 parts of strippant and with the water of aliquot,
Mixing is stood, the liquid of separating sodium sulfate；
S5, remaining strippant is continuously added, is mixed, stood, separating sodium sulfate content is lower than 10% useless H below
Acid-base property liquid and recycling extractant.
A kind of preparation method of modified aliphatic water reducing agent, includes the following steps:
S1,25 parts of sodium sulfite are added into reaction kettle, 40 parts of water, are warming up to 48 DEG C, reaction is hydrolyzed, is reacted
Liquid one, hydrolysis time are 1.5 hours；
S2, useless 25 parts of H acid-base property liquid is added into reaction solution one, 20 parts of acetone, is warming up to 56 DEG C, it is anti-carries out sulfonation
It answers, obtains reactant two, the sulfonating reaction time is 2.5 hours；
S3,55 parts of 37% formaldehyde is added dropwise into reactant two, temperature control is to 60 DEG C；After completion of dropwise addition, 95 DEG C are warming up to, into
Row condensation reaction, obtains the modified aliphatic water reducing agent liquid product that solid content is 35~45%, and condensation reaction time is 6 small
When.
Embodiment 2:
A kind of H acid waste water extraction process, includes the following steps:
S1, in the reactor is added 280 parts of H acid waste water and is adjusted to system pH with 9 parts of regulation system pH of the concentrated sulfuric acid
1.3；
S2,440 parts of extractant are added, mixed, stood；
S3, liquid and useless H acid complex containing inorganic salts are isolated, completes extraction, obtain useless H acid complex；
S4,35 parts of strippant are prepared, are added in useless H acid complex by 7 parts of strippant and with the water of aliquot,
Mixing is stood, the liquid of separating sodium sulfate；
S5, remaining strippant is continuously added, is mixed, stood, separating sodium sulfate content is lower than 10% useless H below
Acid-base property liquid and recycling extractant.
A kind of preparation method of modified aliphatic water reducing agent, includes the following steps:
S1,22 parts of sodium sulfite are added into reaction kettle, 45 parts of water, are warming up to 48 DEG C, reaction is hydrolyzed, is reacted
Liquid one, hydrolysis time are 2 hours；
S2, useless 18 parts of H acid-base property liquid is added into reaction solution one, 26 parts of acetone, is warming up to 55 DEG C, it is anti-carries out sulfonation
It answers, obtains reactant two, the sulfonating reaction time is 1 hour；
S3,70 parts of 37% formaldehyde is added dropwise into reactant two, temperature control is to 60 DEG C；After completion of dropwise addition, 100 DEG C are warming up to,
Condensation reaction is carried out, the modified aliphatic water reducing agent liquid product that solid content is 35~45% is obtained, condensation reaction time is 7 small
When.
Embodiment 3:
A kind of H acid waste water extraction process, includes the following steps:
S1, in the reactor is added 220 parts of H acid waste water and is adjusted to system pH with 4 parts of regulation system pH of the concentrated sulfuric acid
1.6；
S2,400 parts of extractant are added, mixed, stood；
S3, liquid and useless H acid complex containing inorganic salts are isolated, completes extraction, obtain useless H acid complex；
S4,25 parts of strippant are prepared, are added in useless H acid complex by 5 parts of strippant and with the water of aliquot,
Mixing is stood, the liquid of separating sodium sulfate；
S5, remaining strippant is continuously added, is mixed, stood, separating sodium sulfate content is lower than 10% useless H below
Acid-base property liquid and recycling extractant.
A kind of preparation method of modified aliphatic water reducing agent, includes the following steps:
S1,20 parts of sodium sulfite are added into reaction kettle, 40 parts of water, are warming up to 40 DEG C, reaction is hydrolyzed, is reacted
Liquid one, hydrolysis time are 1 hour；
S2, useless 15 parts of H acid-base property liquid is added into reaction solution one, 18 parts of acetone, is warming up to 52 DEG C, it is anti-carries out sulfonation
It answers, obtains reactant two, the sulfonating reaction time is 1.5 hours；
S3,50 parts of 37% formaldehyde is added dropwise into reactant two, temperature control is to 65 DEG C；After completion of dropwise addition, 95 DEG C are warming up to, into
Row condensation reaction, obtains the modified aliphatic water reducing agent liquid product that solid content is 35~45%, and condensation reaction time is 5.5 small
When.
Embodiment 1, embodiment 2, the difference between 3 three of embodiment are three's experimental raw number difference, with
And experiment condition is variant during subsequent experimental.
The present invention passes through H acid waste water in the process modification in traditional back extraction stage first, efficiently solves useless H acid-base property
The excessively high problem of sodium sulphate content in liquid, so that sodium sulphate content is lower than 10% in useless H acid-base property liquid, to allow useless H soda acid
Property liquid participates in acetone, acetone sulfonated bodies, formaldehyde condensation reaction create condition；Utilize sulfonation naphthalene nucleus in useless H acid-base property liquid
It is upper to contain hydroxyl or contain amino, under alkaline condition, condensation reaction is carried out with formaldehyde, and do not influence the condensation of acetone sulfonated bodies
Being normally carried out for reaction, can effectively be condensed in the molecular structure of aliphatic water reducing agent；To realize change give up into
Precious sustainability production, really solves in H acid production process, the possible pollution on the environment of generated H acid waste water,
So that H acid industrialized production is integrated, the development of sustainability.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (8)
1. a kind of H acid waste water extraction process, which is characterized in that including the following steps:
200~290 parts of H acid waste water is added in S1, in the reactor, with 3~10 parts of regulation system pH of the concentrated sulfuric acid, by system pH tune
It saves to 1.3~1.7；
S2,350~450 parts of extractant are added, mixed, stood；
S3, liquid and useless H acid complex containing inorganic salts are isolated, completes extraction, obtain useless H acid complex；
S4,15~35 parts of strippant are prepared, useless H acid complex is added by 5~7 parts of strippant and with the water of aliquot
In, it mixes, stands, the liquid of separating sodium sulfate；
S5, remaining strippant is continuously added, is mixed, stood, separating sodium sulfate content is lower than 10% useless H soda acid below
Property liquid and recycling extractant.
2. a kind of H acid waste water extraction process according to claim 1, it is characterised in that: in the step S2, extractant by
Trioctylamine, sulfonated kerosene and n-octyl alcohol composition.
3. a kind of H acid waste water extraction process according to claim 1, it is characterised in that: in the step S3, inorganic salts
Liquid evaporates to obtain inorganic salts crystallization by triple effect evaporation or MVR.
4. a kind of H acid waste water extraction process according to claim 1, it is characterised in that: in the step S4, strippant
It is made of sodium hydroxide and water.
5. a kind of preparation method of modified aliphatic water reducing agent, which is characterized in that including the following steps:
S1,10~30 parts of sodium sulfite are added into reaction kettle, 40~60 parts of water, are warming up to 40~50 DEG C, reaction is hydrolyzed,
Obtain reaction solution one；
S2, useless 10~30 parts of H acid-base property liquid is added into reaction solution one, 10~30 parts of acetone, is warming up to 50~60 DEG C, carries out
Sulfonating reaction obtains reactant two；
S3,40~70 parts of 37% formaldehyde is added dropwise into reactant two, temperature control is to 50~70 DEG C；After completion of dropwise addition, it is warming up to 90
~100 DEG C, condensation reaction is carried out, obtains the modified aliphatic water reducing agent liquid product that solid content is 35~45%.
6. a kind of preparation method of modified aliphatic water reducing agent according to claim 5, it is characterised in that: the step S1
In, hydrolysis time is 0.5~2 hour.
7. a kind of preparation method of modified aliphatic water reducing agent according to claim 5, it is characterised in that: the step S2
In, the sulfonating reaction time is 1~3 hour.
8. a kind of preparation method of modified aliphatic water reducing agent according to claim 5, it is characterised in that: the step S3
In, condensation reaction time is 3-7 hours.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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