CN108423908A - A kind of peroxidating is double（4- toluyls）The processing method of waste water - Google Patents
A kind of peroxidating is double（4- toluyls）The processing method of waste water Download PDFInfo
- Publication number
- CN108423908A CN108423908A CN201810322292.9A CN201810322292A CN108423908A CN 108423908 A CN108423908 A CN 108423908A CN 201810322292 A CN201810322292 A CN 201810322292A CN 108423908 A CN108423908 A CN 108423908A
- Authority
- CN
- China
- Prior art keywords
- waste water
- solid
- processing method
- peroxidating
- liquid
- 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
Links
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
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D3/00—Halides of sodium, potassium or alkali metals in general
- C01D3/04—Chlorides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/02—Preparation of carboxylic acids or their salts, halides or anhydrides from salts of carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
- C01P2006/65—Chroma (C*)
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
-
- 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
-
- 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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- 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
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
Abstract
The present invention provides a kind of processing methods of bis- (4 toluyl) waste water of peroxidating, and bis- (4 toluyl) waste water of peroxidating are heated；Gained waste water is subjected to acid out with salt acid for adjusting pH value to≤2；Resulting material is carried out first to be separated by solid-liquid separation, obtained solid material is 4 methyl benzoic acids, and gained liquid material sodium hydroxide solution is adjusted pH value to 5~7, concentration and second is carried out successively and is separated by solid-liquid separation, obtained solid material is sodium chloride.The processing method provided by the present invention will not introduce other foreign ions, and easy to operate；Meanwhile being generated without other waste water in processing procedure, mitigate the processing pressure of waste water treatment system significantly and saving processing cost, it is beneficial to environmental protection.
Description
Technical field
The present invention relates to water-treatment technology fields, and in particular to a kind of processing of bis- (4- toluyls) waste water of peroxidating
Method.
Background technology
Peroxidating bis- (4- toluyls) (PMBP) is a kind of diacyl organic peroxide, is used as extruded rubber and vulcanizes
Agent.Compared to common crosslinking agent double 24 (peroxidating pair-(2,4- dichloro-benzoyl)), PMBP is halogen-free, decomposable process
Middle no polychlorinated biphenyls, it is more environmentally friendly；Not " bloom ", security level higher.PMBP and double 24 is diacyl class peroxide, with
The continuous improvement of environmental requirement, the amount that PMBP replacements double 24 put into organic pressure-sensitive gel production is also increasing.In life
During producing peroxidating bis- (4- toluyls), has a large amount of synthesis mother liquid waste water and washes generates.It is this kind of useless
Water there are one what is common is that containing water-soluble peroxide (4- methyl perbenzoic acids sodium), sodium hydroxide, sodium chloride and
4- methyl benzoic acid sodium.Such waste water salt content height, COD high；And with production-scale continuous expansion, generated waste water
Also more and more, these waste water how are handled, the focus that industry is attracted attention is become.
It is recorded currently, having no pertinent literature for the processing method of such waste water, only similar to the method for wastewater treatment,
Such as, the Chinese patent of Publication No. CN102092904 discloses a kind of dibenzoyl peroxide production wastewater treatment and recycling
Technique mainly includes the following steps that：
Recovery of benzoic acid：Hydrochloric acid is first added in dibenzoyl peroxide produces mother liquor and is acidified to pH ＜ 5, filtering acidification analysis
The benzoic acid gone out；
Separating low concentration waste water：1~2g sodium sulfites are added in every liter of waste water, are heated slowly to 70~80 DEG C, stirring 1.5
After~2 hours, low concentration acid waste water is isolated in vacuum distillation；
Recycle sodium chloride：Benzoated sodium chloride crystallization is generated in vacuum distillation process, filters out crystallization, filtrated stock
It returns to vacuum distillation and continues separating low concentration waste water, while filtering sodium chloride crystallization；
Purify sodium chloride：After the sodium chloride filtered out crystallizes the low concentration wastewater dissolving of above-mentioned separation, mud extraction is first filtered
Then slag is acidified to pH ＜ 5 with hydrochloric acid, benzoic acid is recovered by filtration again；The filtrate cycle distillation after benzoic acid is detached, is being continued
Sodium chloride is recycled while isolating low concentration wastewater；
Low concentration wastewater biochemical treatment：Isolated low concentration acid waste water, after being neutralized to neutrality, through hydrolysis-contact
Oxidation, then the qualified discharge after C-Fe light electrolysis decolorizations.
As can be seen that the method need to add reducing agent, it is readily incorporated impurity, and the follow-up place such as vacuum distillation and biochemical treatment
Reason method is complicated.
Invention content
The purpose of the present invention is to provide a kind of processing method of bis- (4- toluyls) waste water of peroxidating, the present invention carries
The processing method of confession will not introduce other foreign ions, and easy to operate.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical scheme：
The present invention provides a kind of processing methods of bis- (4- toluyls) waste water of peroxidating, include the following steps：
Bis- (4- toluyls) waste water of peroxidating are heated；
The waste water obtained after the heat treatment is subjected to acid out with salt acid for adjusting pH value to≤2；
The material obtained after the acid out is carried out first to be separated by solid-liquid separation, obtained solid material is 4- methyl benzoic acids,
Gained liquid material sodium hydroxide solution is adjusted into pH value to 5~7, concentration and second is carried out successively and is separated by solid-liquid separation, obtain
Solid material is sodium chloride.
Preferably, based on mass concentration, bis- (4- toluyls) waste water of peroxidating include：
4- methyl benzoic acids sodium 1~5%；
Sodium hydroxide 0.1~1%；
Sodium chloride 10~25%；
4- methyl perbenzoic acids sodium 0.01~0.1%；
Hydrogen peroxidase 10 .1~1%.
Preferably, the temperature of the heat treatment is 70~80 DEG C, and the time of heat treatment is 0.5~1h.
Preferably, the mass concentration of the hydrochloric acid is 20~36%.
Preferably, the temperature of the acid out is 5~30 DEG C.
Preferably, first separation of solid and liquid and second is separated by solid-liquid separation by centrifuging realization；It is described first be separated by solid-liquid separation and
The rotating speed centrifuged in second separation of solid and liquid process stands alone as 800~2000rpm, and the time of centrifugation stands alone as 5~20min.
Preferably, the solid material obtained after described first being separated by solid-liquid separation is dry after washing to neutrality, obtains 4- methyl
Benzoic acid.
Preferably, the mass concentration of the sodium hydroxide solution is 10~32%.
Preferably, the concentration is that be concentrated into solid-to-liquid ratio be 1 to the liquid material for being 5~7 by pH value：(0.5~2).
Preferably, the solid material obtained after described second being separated by solid-liquid separation is dried, and obtains sodium chloride.
The present invention provides a kind of processing methods of bis- (4- toluyls) waste water of peroxidating, by bis- (the 4- first of peroxidating
Base benzoyl) waste water heated；Gained waste water is subjected to acid out with salt acid for adjusting pH value to≤2；By resulting material into
Row first is separated by solid-liquid separation, and obtained solid material is 4- methyl benzoic acids, and gained liquid material is adjusted with sodium hydroxide solution
PH value carries out concentration and second and is separated by solid-liquid separation, obtained solid material is sodium chloride successively to 5~7.Processing provided by the invention
Method will not introduce other foreign ions, and easy to operate；Meanwhile being generated without other waste water in processing procedure, mitigate significantly useless
The processing pressure of water treatment system and processing cost is saved, is beneficial to environmental protection.Embodiment the result shows that, using this hair
The processing method of bright offer can effectively recycle the 4- methyl benzoic acids in bis- (4- toluyls) waste water of peroxidating, and yield can
Up to 95% or more, purity is up to 99% or more；Simultaneously sodium chloride can be obtained, purity is up to 99% or more, 80% or more whiteness.
Specific implementation mode
The present invention provides a kind of processing methods of bis- (4- toluyls) waste water of peroxidating, include the following steps：
Bis- (4- toluyls) waste water of peroxidating are heated；
The waste water obtained after the heat treatment is subjected to acid out with salt acid for adjusting pH value to≤2；
The material obtained after the acid out is carried out first to be separated by solid-liquid separation, resulting material, which is carried out first, to be separated by solid-liquid separation, and is obtained
The solid material arrived be 4- methyl benzoic acids, by gained liquid material with sodium hydroxide solution adjust pH value to 5~7, successively into
Row concentration and second is separated by solid-liquid separation, and obtained solid material is sodium chloride.
The present invention heats bis- (4- toluyls) waste water of peroxidating.The present invention is double for the peroxidating
The source of (4- toluyls) waste water does not have special restriction, using bis- (the 4- first of peroxidating well known to those skilled in the art
Base benzoyl) waste water, specifically, as prepared the bis- (4- of peroxidating generated during peroxidating bis- (4- toluyls)
Toluyl) mother liquor and washes.
In the present invention, based on mass concentration, 4- first is preferably included in bis- (4- toluyls) waste water of peroxidating
Yl benzoic acid sodium 1~5%, more preferably 2~4%, most preferably 3%.In the present invention, the 4- methyl benzoic acids sodium be with
4- methyl benzoic acid forms recycle.The high efficiente callback of 4- methyl benzoic acids can be realized using the processing method provided by the present invention.
In the present invention, based on mass concentration, hydrogen-oxygen is preferably included in bis- (4- toluyls) waste water of peroxidating
Change sodium 0.1~1%, more preferably 0.2~0.8%, most preferably 0.3~0.7%.In the present invention, the bis- (4- of the peroxidating
Toluyl) sodium hydroxide in waste water is to recycle as sodium chloride.
In the present invention, based on mass concentration, chlorination is preferably included in bis- (4- toluyls) waste water of peroxidating
Sodium 10~25%, more preferably 15~20%, most preferably 16~18%.It can be realized using the processing method provided by the present invention
The high efficiente callback of sodium chloride.
In the present invention, based on mass concentration, 4- was preferably included in bis- (4- toluyls) waste water of peroxidating
Methyl perbenzoic acid sodium 0.01~0.1%, more preferably 0.03~0.08%, most preferably 0.05~0.06%.At this
Heat treatment can be passed through by crossing 4- methyl perbenzoic acid sodium in invention, in bis- (4- toluyls) waste water of peroxidating
Removal.
In the present invention, based on mass concentration, peroxide is preferably included in bis- (4- toluyls) waste water of peroxidating
Change hydrogen 0.1~1%, more preferably 0.3~0.8%, most preferably 0.5~0.6%.In the present invention, by heating energy
Enough removal part hydrogen peroxide still are able to make the yield of 4- methyl benzoic acids although remnants have part hydrogen peroxide in system
Up to 95% or more, purity is up to 99% or more；The purity of sodium chloride obtained simultaneously is up to 99% or more, 80% or more whiteness.
Before carrying out the heat treatment, it is bis- to the peroxidating (4- toluyls) that present invention preferably employs filter bags
Waste water is filtered, bis- (4- toluyls) to remove peroxidating；In the present invention, the aperture of the filter bag is preferably 50
μm。
In the present invention, the temperature of the heat treatment is preferably 70~80 DEG C, and time of heat treatment is preferably 0.5~
1h.In the present invention, the heat treatment can remove 4- methyl peroxides in bis- (4- toluyls) waste water of the peroxidating
Change sodium benzoate and part hydrogen peroxide.
Complete heat treatment after, the present invention by the waste water obtained after the heat treatment with salt acid for adjusting pH value to≤2 into
Row acid out.In the present invention, the mass concentration of the hydrochloric acid is preferably 20~36%, and more preferably 25~30%.In the present invention
In, carry out pH value≤2 of waste water when acid out, preferably 1.0~1.8, more preferably 1.3~1.5, most preferably 1.4.In this hair
In bright, the temperature of the acid out is preferably 5~30 DEG C, more preferably 10~25 DEG C, most preferably 15~20 DEG C.In the present invention
In, the acid out is in order to make 4- methyl benzoic acids be precipitated, to realize the recycling of 4- methyl benzoic acids.
After completing acid out, the material obtained after the acid out is carried out first and is separated by solid-liquid separation by the present invention, obtained solids
Material is 4- methyl benzoic acids, and gained liquid material sodium hydroxide solution is adjusted pH value to 5~7, carries out concentration and the successively
Two are separated by solid-liquid separation, and obtained solid material is sodium chloride.In the present invention, it described first is separated by solid-liquid separation preferably by centrifuging in fact
It is existing；The rotating speed of the centrifugation is preferably 800~2000rpm, more preferably 1000~1800rpm, most preferably 1500rpm；From
The time of the heart is preferably 5~20min, more preferably 7~15min, most preferably 10min.The present invention preferably consolidates described first
The solid material obtained after liquid separation is dry after washing to neutrality, obtains 4- methyl benzoic acids.The present invention for it is described washing and
Dry not special restriction, using washing well known to those skilled in the art and dry technical solution.
In the present invention, the mass concentration of the sodium hydroxide solution is preferably 10~32%, and more preferably 15~25%,
Most preferably 20%.In the present invention, the pH value of liquid material when being concentrated is 5~7, preferably 5.5~6.5, more excellent
It is selected as 6.In the present invention, it is 1 that the liquid material that pH value is 5~7 is preferably concentrated into solid-to-liquid ratio by the concentration：(0.5~
2), more preferably 1：(1~1.5).The present invention does not have the concrete mode of the concentration special restriction, using this field skill
The technical solution concentrated known to art personnel is specific as evaporated.
In the present invention, it described second is separated by solid-liquid separation preferably by centrifuging realization；The rotating speed of the centrifugation is preferably 800~
2000rpm, more preferably 1000~1800rpm, most preferably 1500rpm；The time of centrifugation is preferably 5~20min, more preferably
For 7~15min, most preferably 10min.The solid material that the present invention obtains after being preferably separated by solid-liquid separation described second is done
It is dry, obtain sodium chloride.The present invention is for the not special restriction of the drying, using drying well known to those skilled in the art
Technical solution.The liquid material reuse that the present invention obtains after being preferably separated by solid-liquid separation described second to next first solid-liquid divides
From in rear gained liquid material, fully to recycle sodium chloride.
Below in conjunction with the embodiment in the present invention, the technical solution in the present invention is clearly and completely described.It is aobvious
So, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
Embodiment 1
Use aperture for 50 μm of filter bag (4- toluyls) waste water bis- to peroxidating (including bis- (4- first of peroxidating
Base benzoyl) mother liquor and washes) be filtered, bis- (4- toluyls) waste water of filtered peroxidating are total
1000kg is put into storage tank, and the mass concentration of 4- methyl benzoic acid sodium is in bis- (4- toluyls) waste water of peroxidating
The mass concentration of 4.1%, 4- methyl perbenzoic acid sodium is 0.02%, and the mass concentration of hydrogen peroxide is 0.2%, hydroxide
The mass concentration of sodium is 0.35%, and sodium chloride mass concentration is 17%；
Bis- (4- toluyls) waste water of the peroxidating are heated to 70 DEG C, keep the temperature 1h；
The hydrochloric acid that mass concentration is 33% is added into gained waste water and adjusts pH=1.5,7 DEG C of progress acid outs of temperature control；
Resulting material is carried out first and centrifuges (centrifugal rotational speed 1000rpm, centrifugation time 12min), will be obtained
Solid material wash to neutrality after it is dry, obtain 4- methyl benzoic acids 40kg (yield 96.68%, purity 99.1%)；It will be from
The sodium hydroxide that the liquid material mass concentration that gains in depth of comprehension arrive is 25% adjusts pH=5.8, and it is 1 to be evaporated to solid-to-liquid ratio：2, by institute
Material carry out second centrifuge (centrifugal rotational speed 1000rpm, centrifugation time 12min), by obtained solid material into
Row drying obtains sodium chloride (purity 99.7%, whiteness 80.5%), by obtained liquid material reuse to the first centrifugation point next time
From in rear gained liquid material.
Embodiment 2
Use aperture for 50 μm of filter bag (4- toluyls) waste water bis- to peroxidating (including bis- (4- first of peroxidating
Base benzoyl) mother liquor and washes) be filtered, bis- (4- toluyls) waste water of filtered peroxidating are total
1000kg is put into storage tank, and the mass concentration of 4- methyl benzoic acid sodium is in bis- (4- toluyls) waste water of peroxidating
The mass concentration of 1.1%, 4- methyl perbenzoic acid sodium is 0.01%, and the mass concentration of hydrogen peroxide is 0.1%, hydroxide
The mass concentration of sodium is 0.15%, and sodium chloride mass concentration is 16%；
Bis- (4- toluyls) waste water of the peroxidating are heated to 77 DEG C, keep the temperature 0.7h；
The hydrochloric acid that mass concentration is 29% is added into gained waste water and adjusts pH=1.8,15 DEG C of progress acid outs of temperature control；
Resulting material is carried out first and centrifuges (centrifugal rotational speed 1500rpm, centrifugation time 9min), by what is obtained
Solid material is dry after washing to neutrality, obtains 4- methyl benzoic acids 10.6kg (yield 95.59%, purity 99.2%)；It will be from
The sodium hydroxide that the liquid material mass concentration that gains in depth of comprehension arrive is 11% adjusts pH=6.4, and it is 1 to be evaporated to solid-to-liquid ratio：1, by institute
It obtains material and carries out the second centrifugation (centrifugal rotational speed 1500rpm, centrifugation time 9min), obtained solid material is carried out
It is dry, sodium chloride (purity 99.5%, whiteness 81%) is obtained, after obtained liquid material reuse is centrifuged to next time first
In gained liquid material.
Embodiment 3
Use aperture for 50 μm of filter bag (4- toluyls) waste water bis- to peroxidating (including bis- (4- first of peroxidating
Base benzoyl) mother liquor and washes) be filtered, bis- (4- toluyls) waste water of filtered peroxidating are total
1000kg is put into storage tank, and the mass concentration of 4- methyl benzoic acid sodium is in bis- (4- toluyls) waste water of peroxidating
The mass concentration of 2.2%, 4- methyl perbenzoic acid sodium is 0.05%, and the mass concentration of hydrogen peroxide is 0.4%, hydroxide
The mass concentration of sodium is 0.9%, and sodium chloride mass concentration is 21%；
Bis- (4- toluyls) waste water of the peroxidating are heated to 80 DEG C, keep the temperature 0.5h；
The hydrochloric acid that mass concentration is 35% is added into gained waste water and adjusts pH=1.4,30 DEG C of progress acid outs of temperature control；
Resulting material is carried out first and centrifuges (centrifugal rotational speed 2000rpm, centrifugation time 6min), by what is obtained
Solid material is dry after washing to neutrality, obtains 4- methyl benzoic acids 21.5kg (yield 96.95%, purity 99.2%)；It will be from
The sodium hydroxide that the liquid material mass concentration that gains in depth of comprehension arrive is 32% adjusts pH=5.5, and it is 1 to be evaporated to solid-to-liquid ratio：0.5, it will
Resulting material carry out second centrifuge (centrifugal rotational speed 2000rpm, centrifugation time 6min), by obtained solid material into
Row drying obtains sodium chloride (purity 99.3%, whiteness 81%), and obtained liquid material reuse to next time first is centrifuged
Afterwards in gained liquid material.
As seen from the above embodiment, the processing method provided by the present invention will not introduce other foreign ions, and easy to operate；
Meanwhile being generated without other waste water in processing procedure, mitigate the processing pressure of waste water treatment system significantly and saving processing cost,
It is beneficial to environmental protection.Bis- (4- toluyls) waste water of peroxidating can effectively be recycled using the processing method provided by the present invention
In 4- methyl benzoic acids, yield is up to 95% or more, and purity is up to 99% or more；Sodium chloride can be obtained simultaneously, purity can
Up to 99% or more, 80% or more whiteness.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of processing method of bis- (4- toluyls) waste water of peroxidating, includes the following steps：
Bis- (4- toluyls) waste water of peroxidating are heated；
The waste water obtained after the heat treatment is subjected to acid out with salt acid for adjusting pH value to≤2；
The material obtained after the acid out is carried out first to be separated by solid-liquid separation, obtained solid material is 4- methyl benzoic acids, by institute
It obtains liquid material sodium hydroxide solution and adjusts pH value to 5~7, carry out concentration and second successively and be separated by solid-liquid separation, obtained solid
Material is sodium chloride.
2. processing method according to claim 1, which is characterized in that based on mass concentration, bis- (the 4- methyl of peroxidating
Benzoyl) waste water includes：
4- methyl benzoic acids sodium 1~5%；
Sodium hydroxide 0.1~1%；
Sodium chloride 10~25%；
4- methyl perbenzoic acids sodium 0.01~0.1%；
Hydrogen peroxidase 10 .1~1%.
3. processing method according to claim 1 or 2, which is characterized in that the temperature of the heat treatment is 70~80 DEG C,
The time of heat treatment is 0.5~1h.
4. processing method according to claim 1, which is characterized in that the mass concentration of the hydrochloric acid is 20~36%.
5. processing method according to claim 1 or 4, which is characterized in that the temperature of the acid out is 5~30 DEG C.
6. processing method according to claim 1, which is characterized in that first separation of solid and liquid and the second separation of solid and liquid are logical
Centrifugation is crossed to realize；The rotating speed centrifuged in first separation of solid and liquid and the second separation of solid and liquid process stands alone as 800~2000rpm,
The time of centrifugation stands alone as 5~20min.
7. processing method according to claim 1 or 6, which is characterized in that is obtained after being separated by solid-liquid separation described first consolidates
Body material is dry after washing to neutrality, obtains 4- methyl benzoic acids.
8. processing method according to claim 1, which is characterized in that the mass concentration of the sodium hydroxide solution be 10~
32%.
9. the processing method according to claim 1 or 8, which is characterized in that it is described concentration be by pH value be 5~7 liquid
It is 1 that material, which is concentrated into solid-to-liquid ratio,：(0.5~2).
10. processing method according to claim 1 or 6, which is characterized in that is obtained after being separated by solid-liquid separation described second consolidates
Body material is dried, and obtains sodium chloride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810322292.9A CN108423908A (en) | 2018-04-11 | 2018-04-11 | A kind of peroxidating is double（4- toluyls）The processing method of waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810322292.9A CN108423908A (en) | 2018-04-11 | 2018-04-11 | A kind of peroxidating is double（4- toluyls）The processing method of waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108423908A true CN108423908A (en) | 2018-08-21 |
Family
ID=63160914
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810322292.9A Pending CN108423908A (en) | 2018-04-11 | 2018-04-11 | A kind of peroxidating is double（4- toluyls）The processing method of waste water |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108423908A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020157061A1 (en) | 2019-01-31 | 2020-08-06 | Nouryon Chemicals International B.V. | Process for producing salt from waste aqueous streams of organic peroxides production |
| WO2020249692A1 (en) | 2019-06-12 | 2020-12-17 | Nouryon Chemicals International B.V. | Method for isolating carboxylic acid from an aqueous side stream |
| CN113382968A (en) * | 2019-01-31 | 2021-09-10 | 诺力昂化学品国际有限公司 | Process for producing salts from aqueous waste streams of organic peroxide production |
| CN113924282A (en) * | 2019-06-12 | 2022-01-11 | 诺力昂化学品国际有限公司 | Process for separating carboxylic acids from aqueous sidestreams |
| CN114206834A (en) * | 2019-08-27 | 2022-03-18 | 巴斯夫欧洲公司 | Method for purifying 4, 4' -dichlorodiphenyl sulfone |
| WO2022117439A1 (en) | 2020-12-01 | 2022-06-09 | Nouryon Chemicals International B.V. | Method for isolating carboxylic acid from an aqueous side stream with co-production of alkali metal salt |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092904A (en) * | 2011-01-05 | 2011-06-15 | 甘肃农业大学 | Treatment and resource-utilizing technology of dibenzoyl peroxide production wastewater |
| CN102092906A (en) * | 2011-01-06 | 2011-06-15 | 西北师范大学 | Treatment and resource-utilizing technology of tert-butyl peroxy benzoate production wastewater |
| CN105036439A (en) * | 2015-07-22 | 2015-11-11 | 安徽佳先功能助剂股份有限公司 | Comprehensive recovery and utilization method for alkali cleaning working procedure waste water |
-
2018
- 2018-04-11 CN CN201810322292.9A patent/CN108423908A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102092904A (en) * | 2011-01-05 | 2011-06-15 | 甘肃农业大学 | Treatment and resource-utilizing technology of dibenzoyl peroxide production wastewater |
| CN102092906A (en) * | 2011-01-06 | 2011-06-15 | 西北师范大学 | Treatment and resource-utilizing technology of tert-butyl peroxy benzoate production wastewater |
| CN105036439A (en) * | 2015-07-22 | 2015-11-11 | 安徽佳先功能助剂股份有限公司 | Comprehensive recovery and utilization method for alkali cleaning working procedure waste water |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020157061A1 (en) | 2019-01-31 | 2020-08-06 | Nouryon Chemicals International B.V. | Process for producing salt from waste aqueous streams of organic peroxides production |
| CN113382968A (en) * | 2019-01-31 | 2021-09-10 | 诺力昂化学品国际有限公司 | Process for producing salts from aqueous waste streams of organic peroxide production |
| WO2020249692A1 (en) | 2019-06-12 | 2020-12-17 | Nouryon Chemicals International B.V. | Method for isolating carboxylic acid from an aqueous side stream |
| CN113924282A (en) * | 2019-06-12 | 2022-01-11 | 诺力昂化学品国际有限公司 | Process for separating carboxylic acids from aqueous sidestreams |
| JP2022536699A (en) * | 2019-06-12 | 2022-08-18 | ヌーリオン ケミカルズ インターナショナル ベスローテン フェノーツハップ | Method for isolating carboxylic acids from aqueous side streams |
| CN113924282B (en) * | 2019-06-12 | 2023-09-12 | 诺力昂化学品国际有限公司 | Process for separating carboxylic acid from aqueous side stream |
| JP7355858B2 (en) | 2019-06-12 | 2023-10-03 | ヌーリオン ケミカルズ インターナショナル ベスローテン フェノーツハップ | Method for isolating carboxylic acids from aqueous side streams |
| CN114206834A (en) * | 2019-08-27 | 2022-03-18 | 巴斯夫欧洲公司 | Method for purifying 4, 4' -dichlorodiphenyl sulfone |
| WO2022117439A1 (en) | 2020-12-01 | 2022-06-09 | Nouryon Chemicals International B.V. | Method for isolating carboxylic acid from an aqueous side stream with co-production of alkali metal salt |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108423908A (en) | A kind of peroxidating is double（4- toluyls）The processing method of waste water | |
| CN108558105A (en) | A kind of processing method of dibenzoyl peroxide waste water | |
| CN108455782B (en) | A kind of processing method of bis- (2,4 dichloro benzene formyl) waste water of peroxidating | |
| CN105836767B (en) | A kind of method for preparing anhydrous Lithium chloride using waste liquid containing lithium | |
| CN101503353A (en) | Technique for purifying crude terephthalic acid from alkali deweighting wastewater | |
| WO2005052175A3 (en) | Process for recovering polyhydroxialkanoates ('phas') from cellular biomass | |
| JPH0131435B2 (en) | ||
| CN101748515B (en) | Method for recovering ionic liquid | |
| CN111548323B (en) | Recovery method of aminothiazoly loximate | |
| CN102807497A (en) | Method for recovering chloroacetic acid method glycine catalyst methenamine | |
| CN107573441A (en) | A kind of preparation method and application suitable for industrialized production high-purity sodium alginate | |
| KR101848840B1 (en) | Method for producing rice starch | |
| JP5052234B2 (en) | Method for producing succinic acid | |
| CN104692566A (en) | Treatment method of aryl triazolinone high-salinity wastewater | |
| CN109761793B (en) | Method for separating and purifying mixed dibasic acid by solution-melt crystallization coupling | |
| CN108423692B (en) | Method for purifying and refining sodium chloride by using waste salt generated in vitamin C production | |
| CN113023751B (en) | Method for recovering lithium, sodium, potassium, magnesium and calcium from chloride brine | |
| JPH03216195A (en) | Purification of amino acid-nucleic acid and derivative thereof | |
| JPH02991B2 (en) | ||
| CN107540141A (en) | A kind of recovery method of titanium dioxide coating waste water | |
| US3152150A (en) | Production of griseofulvin | |
| CN113185397B (en) | Method for recovering malic acid from fermentation broth | |
| CN104724872A (en) | Method for recycling sodium chloride from waste water generated during production of phenoxyacetic acid pesticide | |
| JPS6051145A (en) | Recovery of terephthalic acid | |
| CN110526845A (en) | A kind of pollution-free high-efficient rate preparation method of tetraethylthiuram disulfide |
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 | ||
| CB02 | Change of applicant information |
Address after: 215522 New Material Industrial Park, Changshu City, Suzhou City, Jiangsu Province Applicant after: Changshou City Binjiang Chemical Co., Ltd. Address before: 215500 Room 201, 86 Blocks, Huyuan New Village, Yushan Town, Changshu City, Jiangsu Province Applicant before: Changshou City Binjiang Chemical Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180821 |
|
| RJ01 | Rejection of invention patent application after publication |