CN108484852A - A kind of modified naphthalene series water-reducing agent of useless residue in the production process containing phenols - Google Patents
A kind of modified naphthalene series water-reducing agent of useless residue in the production process containing phenols Download PDFInfo
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- CN108484852A CN108484852A CN201810481969.3A CN201810481969A CN108484852A CN 108484852 A CN108484852 A CN 108484852A CN 201810481969 A CN201810481969 A CN 201810481969A CN 108484852 A CN108484852 A CN 108484852A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
- C08G8/28—Chemically modified polycondensates
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- 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
- C04B24/24—Macromolecular compounds
- C04B24/28—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B24/30—Condensation polymers of aldehydes or ketones
- C04B24/302—Phenol-formaldehyde condensation polymers
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- 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
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- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Phenolic Resins Or Amino Resins (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The present invention provides a kind of modified naphthalene series water-reducing agent of the useless residue in the production process containing phenols, is related to building material technical field, the constituent containing following parts by weight：200 350 parts of crude naphthalene, industrial 220 400 parts of the concentrated sulfuric acid, 50 100 parts of useless residue in phenols production process, 150 200 parts of formaldehyde, 400 600 parts of liquid caustic soda, 5 50 parts of water, preparation method includes the following steps：(1) above-mentioned raw materials are weighed；(2) crude naphthalene is added in four-hole boiling flask, after being heated to 150 DEG C of meltings, the concentrated sulfuric acid is added dropwise in heating while stirring, controls rate of addition, drips off 3 5h of rear insulation reaction, detect the acidity value of material；(3) 120 DEG C are cooled to, water is added according to acidity value, hydrolyze 30min, the useless residue in phenols production process is added after the completion of hydrolysis, after stirring 30min starts that formaldehyde is added dropwise in 100 115 DEG C, controls rate of addition, rear insulation reaction is added dropwise, it is slowly added to liquid caustic soda after heat preservation and adjusts PH, the present invention not only solves environmental issue, and creates economic benefit again.
Description
Technical field
The present invention relates to building material technical fields, and in particular to a kind of useless residue in the production process containing phenols changes
Property naphthalene water reducer.
Background technology
Water-reducing agent is a kind of under conditions of maintaining concrete slump to be basically unchanged, and can reduce the coagulation of mixing water amount
Native additive.Belong to anion surfactant mostly, there is lignosulfonates, naphthalene sulphonate formaldehyde polymer etc..It is added mixed
There is peptizaiton to cement granules after solidifying soil mixture, its workability can be improved, reduce unit consumption of water, improve concrete mixing
The mobility of object；Or unit cement consumption is reduced, save cement.
Either phenolic compound is synthetically produced in the useless residue generated in the process or a small amount of residual mother liquor containing different phenol
The substances such as propyl benzene, phenol, acetone, phenolic compound, belong to hazardous waste, are unable to direct emission, mostly use distillation, essence at present
The modes separating-purifying such as evaporate, extract, it is of high cost, energy consumption is big, it is not only solved if rationally utilizing it for producing water-reducing agent
It has determined environmental issue, and has created economic benefit again.
Invention content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the present invention provides a kind of modification naphthalenes of the useless residue in production process containing phenols
Based water reducer not only solves environmental issue, and creates economic benefit again.
(2) technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs：
A kind of modified naphthalene series water-reducing agent of useless residue in the production process containing phenols, the composition containing following parts by weight
Ingredient：Useless residue 50-100 parts, formaldehyde in 200-350 parts of crude naphthalene, industrial 220-400 parts of the concentrated sulfuric acid, phenols production process
150-200 parts, 400-600 parts of liquid caustic soda, 5-50 parts of water.
Preferably, the constituent containing following parts by weight：250-300 parts of crude naphthalene, industrial concentrated sulfuric acid 230-280
Part, useless residue 60-80 parts in phenols production process, 170-190 parts of formaldehyde, 450-550 parts of liquid caustic soda, 20-40 parts of water.
Preferably, the constituent containing following parts by weight：260-280 parts of crude naphthalene, industrial concentrated sulfuric acid 240-260
Part, useless residue 65-75 parts in phenols production process, 175-185 parts of formaldehyde, 480-530 parts of liquid caustic soda, 25-35 parts of water.
Preferably, the constituent containing following parts by weight：270 parts of crude naphthalene, industrial 250 parts of the concentrated sulfuric acid, phenols life
30 parts of 500 parts of 180 parts of 70 parts of useless residue, formaldehyde, liquid caustic soda, water during production.
Preferably, a concentration of the 37% of the formaldehyde.
The modified naphthalene series water-reducing agent of useless residue in the above-mentioned production process containing phenols, preparation method include following step
Suddenly：
(1) above-mentioned raw materials are weighed；
(2) crude naphthalene is added in four-hole boiling flask, after being heated to 150 DEG C of meltings, is warming up to 155-160 DEG C, side stirring
The concentrated sulfuric acid is added dropwise in side, controls rate of addition, drips off rear insulation reaction 3-5h, detect the acidity value of material；
(3) 120 DEG C are cooled to, water is added according to acidity value, 30min is hydrolyzed, phenols production process is added after the completion of hydrolysis
In useless residue, stir 30min after start in 100-115 DEG C be added dropwise formaldehyde, control rate of addition, in 100- after being added dropwise
115 DEG C of insulation reaction 2-5h are slowly added to liquid caustic soda and adjust pH value be 7-9 after heat preservation.
Preferably, the rate of addition of the concentrated sulfuric acid is controlled, 30min is added dropwise.
Preferably, the rate of addition of formaldehyde is controlled, 1.5-3h is added dropwise.
Preferably, the modified naphthalene series water-reducing agent is added in concrete mix as an aqueous solution, and volume is cement
The 0.6-3.0% of weight.
(3) advantageous effect
The present invention provides a kind of modified naphthalene series water-reducing agents of the useless residue in production process containing phenols, have with following
Beneficial effect：
(1) present invention is directly using the useless residue generated in phenol or phenolic compound production process, without through any
Processing is directly used in the pollution that synthesis modification naphthalene series high-efficiency water-reducing agent avoids waste discharge to environment, and solves useless residue and return
It is more complex to receive processing, not disposable, energy consumption is big, it is of high cost the problems such as, belong to the environment-friendly type invention of hazardous waste recycling.
(2) present invention introduces useless residue in phenol, phenolic compound, acetone, isopropylbenzene etc. can participate in polymerizeing, can
Naphthalene water reducer is grafted in condensation course, increases branch quantity, the type in naphthalene water reducer, concrete can be improved
Slump effect.
(3) it both solves environmental issue, and creates economic benefit again, kill two birds with one stone.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention,
Technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is the present invention one
Divide embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, shall fall within the protection scope of the present invention.
Embodiment 1：
A kind of modified naphthalene series water-reducing agent of useless residue in the production process containing phenols, the composition containing following parts by weight
Ingredient：270 parts of crude naphthalene, industrial 250 parts of the concentrated sulfuric acid, 70 parts of useless residue in phenols production process, a concentration of 37% formaldehyde
180 parts, 500 parts of liquid caustic soda, 30 parts of water.
The modified naphthalene series water-reducing agent of useless residue in the above-mentioned production process containing phenols, preparation method include following step
Suddenly：
(1) above-mentioned raw materials are weighed；
(2) crude naphthalene is added in four-hole boiling flask, after being heated to 150 DEG C of meltings, is warming up to 155-160 DEG C, side stirring
The concentrated sulfuric acid is added dropwise in side, controls rate of addition, and 30min is added dropwise, drips off rear insulation reaction 3.5h, detect the acidity value of material；
(3) 120 DEG C are cooled to, water is added according to acidity value, 30min is hydrolyzed, phenols production process is added after the completion of hydrolysis
In useless residue, after stirring 30min start that formaldehyde is added dropwise in 110 DEG C, control rate of addition, 1.5-3h is added dropwise, drips
In 110 DEG C of insulation reaction 2.5h after finishing, liquid caustic soda is slowly added to after heat preservation and adjusts pH value to be 7-9.
Above-mentioned modified naphthalene series water-reducing agent is added in concrete mix as an aqueous solution, and volume is cement weight
2.0%.
Embodiment 2：
A kind of modified naphthalene series water-reducing agent of useless residue in the production process containing phenols, the composition containing following parts by weight
Ingredient：260 parts of crude naphthalene, industrial 240 parts of the concentrated sulfuric acid, 65 parts of useless residue in phenols production process, a concentration of 37% formaldehyde
175 parts, 480 parts of liquid caustic soda, 25 parts of water.
The modified naphthalene series water-reducing agent of useless residue in the above-mentioned production process containing phenols, preparation method include following step
Suddenly：
(1) above-mentioned raw materials are weighed；
(2) crude naphthalene is added in four-hole boiling flask, after being heated to 150 DEG C of meltings, is warming up to 155-160 DEG C, side stirring
The concentrated sulfuric acid is added dropwise in side, controls rate of addition, and 30min is added dropwise, drips off rear insulation reaction 4h, detect the acidity value of material；
(3) 120 DEG C are cooled to, water is added according to acidity value, 30min is hydrolyzed, phenols production process is added after the completion of hydrolysis
In useless residue, after stirring 30min start that formaldehyde is added dropwise in 100 DEG C, control rate of addition, 1.5-3h is added dropwise, drips
In 115 DEG C of insulation reaction 5h after finishing, liquid caustic soda is slowly added to after heat preservation and adjusts pH value to be 7-9.
Above-mentioned modified naphthalene series water-reducing agent is added in concrete mix as an aqueous solution, and volume is cement weight
1.0%.
Embodiment 3：
A kind of modified naphthalene series water-reducing agent of useless residue in the production process containing phenols, the composition containing following parts by weight
Ingredient：280 parts of crude naphthalene, industrial 260 parts of the concentrated sulfuric acid, 75 parts of useless residue in phenols production process, a concentration of 37% formaldehyde
185 parts, 530 parts of liquid caustic soda, 35 parts of water.
The modified naphthalene series water-reducing agent of useless residue in the above-mentioned production process containing phenols, preparation method include following step
Suddenly：
(1) above-mentioned raw materials are weighed；
(2) crude naphthalene is added in four-hole boiling flask, after being heated to 150 DEG C of meltings, is warming up to 155-160 DEG C, side stirring
The concentrated sulfuric acid is added dropwise in side, controls rate of addition, and 30min is added dropwise, drips off rear insulation reaction 4.5h, detect the acidity value of material；
(3) 120 DEG C are cooled to, water is added according to acidity value, 30min is hydrolyzed, phenols production process is added after the completion of hydrolysis
In useless residue, after stirring 30min start that formaldehyde is added dropwise in 115 DEG C, control rate of addition, 1.5-3h is added dropwise, drips
In 105 DEG C of insulation reaction 2.5h after finishing, liquid caustic soda is slowly added to after heat preservation and adjusts pH value to be 7-9.
Above-mentioned modified naphthalene series water-reducing agent is added in concrete mix as an aqueous solution, and volume is cement weight
2.5%.
Embodiment 4：
A kind of modified naphthalene series water-reducing agent of useless residue in the production process containing phenols, the composition containing following parts by weight
Ingredient：250 parts of crude naphthalene, industrial 230 parts of the concentrated sulfuric acid, 60 parts of useless residue in phenols production process, a concentration of 37% formaldehyde
170 parts, 450 parts of liquid caustic soda, 20 parts of water.
The modified naphthalene series water-reducing agent of useless residue in the above-mentioned production process containing phenols, preparation method include following step
Suddenly：
(1) above-mentioned raw materials are weighed；
(2) crude naphthalene is added in four-hole boiling flask, after being heated to 150 DEG C of meltings, is warming up to 155-160 DEG C, side stirring
The concentrated sulfuric acid is added dropwise in side, controls rate of addition, and 30min is added dropwise, drips off rear insulation reaction 5h, detect the acidity value of material；
(3) 120 DEG C are cooled to, water is added according to acidity value, 30min is hydrolyzed, phenols production process is added after the completion of hydrolysis
In useless residue, after stirring 30min start that formaldehyde is added dropwise in 115 DEG C, control rate of addition, 1.5-3h is added dropwise, drips
In 115 DEG C of insulation reaction 5h after finishing, liquid caustic soda is slowly added to after heat preservation and adjusts pH value to be 7-9.
Above-mentioned modified naphthalene series water-reducing agent is added in concrete mix as an aqueous solution, and volume is cement weight
3.0%.
Embodiment 5：
A kind of modified naphthalene series water-reducing agent of useless residue in the production process containing phenols, the composition containing following parts by weight
Ingredient：300 parts of crude naphthalene, industrial 280 parts of the concentrated sulfuric acid, 80 parts of useless residue in phenols production process, a concentration of 37% formaldehyde
190 parts, 550 parts of liquid caustic soda, 40 parts of water.
The modified naphthalene series water-reducing agent of useless residue in the above-mentioned production process containing phenols, preparation method include following step
Suddenly：
(1) above-mentioned raw materials are weighed；
(2) crude naphthalene is added in four-hole boiling flask, after being heated to 150 DEG C of meltings, is warming up to 155-160 DEG C, side stirring
The concentrated sulfuric acid is added dropwise in side, controls rate of addition, and 30min is added dropwise, drips off rear insulation reaction 3h, detect the acidity value of material；
(3) 120 DEG C are cooled to, water is added according to acidity value, 30min is hydrolyzed, phenols production process is added after the completion of hydrolysis
In useless residue, after stirring 30min start that formaldehyde is added dropwise in 100 DEG C, control rate of addition, 1.5-3h is added dropwise, drips
In 100 DEG C of insulation reaction 2h after finishing, liquid caustic soda is slowly added to after heat preservation and adjusts pH value to be 7-9.
Above-mentioned modified naphthalene series water-reducing agent is added in concrete mix as an aqueous solution, and volume is cement weight
0.6%.
Embodiment 6：
A kind of modified naphthalene series water-reducing agent of useless residue in the production process containing phenols, the composition containing following parts by weight
Ingredient：200 parts of crude naphthalene, industrial 220 parts of the concentrated sulfuric acid, 50 parts of useless residue in phenols production process, a concentration of 37% formaldehyde
150 parts, 400 parts of liquid caustic soda, 5 parts of water.
The modified naphthalene series water-reducing agent of useless residue in the above-mentioned production process containing phenols, preparation method include following step
Suddenly：
(1) above-mentioned raw materials are weighed；
(2) crude naphthalene is added in four-hole boiling flask, after being heated to 150 DEG C of meltings, is warming up to 155-160 DEG C, side stirring
The concentrated sulfuric acid is added dropwise in side, controls rate of addition, and 30min is added dropwise, drips off rear insulation reaction 3h, detect the acidity value of material；
(3) 120 DEG C are cooled to, water is added according to acidity value, 30min is hydrolyzed, phenols production process is added after the completion of hydrolysis
In useless residue, after stirring 30min start that formaldehyde is added dropwise in 115 DEG C, control rate of addition, 1.5-3h is added dropwise, drips
In 100 DEG C of insulation reaction 5h after finishing, liquid caustic soda is slowly added to after heat preservation and adjusts pH value to be 7-9.
Above-mentioned modified naphthalene series water-reducing agent is added in concrete mix as an aqueous solution, and volume is cement weight
0.6%.
Embodiment 7：
A kind of modified naphthalene series water-reducing agent of useless residue in the production process containing phenols, the composition containing following parts by weight
Ingredient：350 parts of crude naphthalene, industrial 400 parts of the concentrated sulfuric acid, 100 parts of useless residue in phenols production process, a concentration of 37% formaldehyde
200 parts, 600 parts of liquid caustic soda, 50 parts of water.
The modified naphthalene series water-reducing agent of useless residue in the above-mentioned production process containing phenols, preparation method include following step
Suddenly：
(1) above-mentioned raw materials are weighed；
(2) crude naphthalene is added in four-hole boiling flask, after being heated to 150 DEG C of meltings, is warming up to 155-160 DEG C, side stirring
The concentrated sulfuric acid is added dropwise in side, controls rate of addition, and 30min is added dropwise, drips off rear insulation reaction 5h, detect the acidity value of material；
(3) 120 DEG C are cooled to, water is added according to acidity value, 30min is hydrolyzed, phenols production process is added after the completion of hydrolysis
In useless residue, after stirring 30min start that formaldehyde is added dropwise in 100 DEG C, control rate of addition, 1.5-3h is added dropwise, drips
In 115 DEG C of insulation reaction 2h after finishing, liquid caustic soda is slowly added to after heat preservation and adjusts pH value to be 7-9.
Above-mentioned modified naphthalene series water-reducing agent is added in concrete mix as an aqueous solution, and volume is cement weight
3.0%.
Embodiment 8：
A kind of modified naphthalene series water-reducing agent of useless residue in the production process containing phenols, the composition containing following parts by weight
Ingredient：300 parts of crude naphthalene, industrial 300 parts of the concentrated sulfuric acid, 80 parts of useless residue in phenols production process, a concentration of 37% formaldehyde
170 parts, 500 parts of liquid caustic soda, 40 parts of water.
The modified naphthalene series water-reducing agent of useless residue in the above-mentioned production process containing phenols, preparation method include following step
Suddenly：
(1) above-mentioned raw materials are weighed；
(2) crude naphthalene is added in four-hole boiling flask, after being heated to 150 DEG C of meltings, is warming up to 155-160 DEG C, side stirring
The concentrated sulfuric acid is added dropwise in side, controls rate of addition, and 30min is added dropwise, drips off rear insulation reaction 4h, detect the acidity value of material；
(3) 120 DEG C are cooled to, water is added according to acidity value, 30min is hydrolyzed, phenols production process is added after the completion of hydrolysis
In useless residue, after stirring 30min start that formaldehyde is added dropwise in 108 DEG C, control rate of addition, 1.5-3h is added dropwise, drips
In 100 DEG C of insulation reaction 4h after finishing, liquid caustic soda is slowly added to after heat preservation and adjusts pH value to be 7-9.
Above-mentioned modified naphthalene series water-reducing agent is added in concrete mix as an aqueous solution, and volume is cement weight
1.5%.
The following table 1 is the water-reducing rate comparing result of product and commercially available naphthalene water reducer prepared by the embodiment of the present invention 1：
The following table 2 is the slump comparing result of product and commercially available naphthalene water reducer prepared by the embodiment of the present invention 1：
Table 1：
| Water-reducing agent | Volume (%) | Water-reducing rate (%) |
| Commercially available naphthalene water reducer | 1.2% | 20 |
| Water-reducing agent of the present invention | 1.2% | 22 |
Table 2：
It should be noted that herein, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also include other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although with reference to the foregoing embodiments
Invention is explained in detail, it will be understood by those of ordinary skill in the art that：It still can be to aforementioned each implementation
Technical solution recorded in example is modified or equivalent replacement of some of the technical features；And these modification or
It replaces, the spirit and scope for various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution.
Claims (9)
1. a kind of modified naphthalene series water-reducing agent of the useless residue in production process containing phenols, which is characterized in that contain following weight
The constituent of number：Useless residue 50- in 200-350 parts of crude naphthalene, industrial 220-400 parts of the concentrated sulfuric acid, phenols production process
100 parts, 150-200 parts of formaldehyde, 400-600 parts of liquid caustic soda, 5-50 parts of water.
2. the modified naphthalene series water-reducing agent as described in claim 1 containing the useless residue in phenols production process, which is characterized in that
Constituent containing following parts by weight：In 250-300 parts of crude naphthalene, industrial 230-280 parts of the concentrated sulfuric acid, phenols production process
Useless residue 60-80 parts, 170-190 parts of formaldehyde, 450-550 parts of liquid caustic soda, 20-40 parts of water.
3. the modified naphthalene series water-reducing agent as claimed in claim 2 containing the useless residue in phenols production process, which is characterized in that
Constituent containing following parts by weight：In 260-280 parts of crude naphthalene, industrial 240-260 parts of the concentrated sulfuric acid, phenols production process
Useless residue 65-75 parts, 175-185 parts of formaldehyde, 480-530 parts of liquid caustic soda, 25-35 parts of water.
4. the modified naphthalene series water-reducing agent as claimed in claim 3 containing the useless residue in phenols production process, which is characterized in that
Constituent containing following parts by weight：Useless residue in 270 parts of crude naphthalene, industrial 250 parts of the concentrated sulfuric acid, phenols production process
70 parts, 180 parts of formaldehyde, 500 parts of liquid caustic soda, 30 parts of water.
5. the modified naphthalene series water-reducing agent as claimed in claim 3 containing the useless residue in phenols production process, which is characterized in that
A concentration of the 37% of the formaldehyde.
6. claim 1-5 any one of as described in the modified naphthalene series diminishing containing the useless residue in phenols production process
Agent, which is characterized in that preparation method includes the following steps：
(1) above-mentioned raw materials are weighed；
(2) crude naphthalene is added in four-hole boiling flask, after being heated to 150 DEG C of meltings, is warming up to 155-160 DEG C, drips while stirring
Enriching sulfuric acid controls rate of addition, drips off rear insulation reaction 3-5h, detect the acidity value of material；
(3) 120 DEG C are cooled to, water is added according to acidity value, 30min is hydrolyzed, is added in phenols production process after the completion of hydrolysis
Useless residue after stirring 30min starts that formaldehyde is added dropwise in 100-115 DEG C, rate of addition is controlled, in 100-115 DEG C after being added dropwise
Insulation reaction 2-5h is slowly added to liquid caustic soda and adjusts pH value be 7-9 after heat preservation.
7. the modified naphthalene series water-reducing agent as claimed in claim 6 containing the useless residue in phenols production process, which is characterized in that
The rate of addition of the concentrated sulfuric acid is controlled, 30min is added dropwise.
8. the modified naphthalene series water-reducing agent as claimed in claim 6 containing the useless residue in phenols production process, which is characterized in that
The rate of addition of formaldehyde is controlled, 1.5-3h is added dropwise.
9. the modified naphthalene series water-reducing agent as claimed in claim 6 containing the useless residue in phenols production process, which is characterized in that
The modified naphthalene series water-reducing agent is added in concrete mix as an aqueous solution, and volume is the 0.6-3.0% of cement weight.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108586683A (en) * | 2018-05-18 | 2018-09-28 | 萧县沃德化工科技有限公司 | The method that heavy distillat prepares modified aliphatic high efficiency water reducing agent in ethanol production process |
| CN111825364A (en) * | 2020-06-15 | 2020-10-27 | 安徽鑫固环保股份有限公司 | Preparation method of environment-friendly naphthalene water reducer |
| CN112574373A (en) * | 2020-10-27 | 2021-03-30 | 安徽鑫固环保股份有限公司 | Resource utilization method of waste toluene solvent generated in pharmaceutical process |
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| CN108586683A (en) * | 2018-05-18 | 2018-09-28 | 萧县沃德化工科技有限公司 | The method that heavy distillat prepares modified aliphatic high efficiency water reducing agent in ethanol production process |
| CN111825364A (en) * | 2020-06-15 | 2020-10-27 | 安徽鑫固环保股份有限公司 | Preparation method of environment-friendly naphthalene water reducer |
| CN111825364B (en) * | 2020-06-15 | 2022-06-14 | 安徽鑫固环保股份有限公司 | Preparation method of environment-friendly naphthalene water reducer |
| CN112574373A (en) * | 2020-10-27 | 2021-03-30 | 安徽鑫固环保股份有限公司 | Resource utilization method of waste toluene solvent generated in pharmaceutical process |
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