CN109180046A - A method of high efficiency water reducing agent is made using lignin - Google Patents
A method of high efficiency water reducing agent is made using lignin Download PDFInfo
- Publication number
- CN109180046A CN109180046A CN201811354886.4A CN201811354886A CN109180046A CN 109180046 A CN109180046 A CN 109180046A CN 201811354886 A CN201811354886 A CN 201811354886A CN 109180046 A CN109180046 A CN 109180046A
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- China
- Prior art keywords
- water
- reaction kettle
- minutes
- reducing agent
- lignin
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Classifications
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
-
- 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 & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Phenolic Resins Or Amino Resins (AREA)
Abstract
The present invention provides a kind of methods using lignin production high efficiency water reducing agent, and water, sodium sulfite, acetone are placed in reaction kettle and mixed 30 minutes at 30-35 DEG C；Paper mill effluent and catalyst are added into reaction kettle, is reacted 50-70 minutes at 50-60 DEG C；Formaldehyde is added dropwise into reaction kettle, time for adding is 60-90 minutes；Controlled at reacting 2-2.5 hours at 90-105 DEG C；Sodium gluconate is added into reaction kettle, controlled at 90-105 DEG C, reacts 30 minutes.Each raw material dosage % number by weight is calculated as: sodium sulfite 50-55%；Acetone 35-40%；Formaldehyde 110-125%；Paper mill effluent (content of lignin 30-35%, wt%) 200-230%；Boron trifluoride ether 2-3%；Sodium gluconate 3-5%；Water 110-130%.This method preparation time is short, and made water-reducing agent water-reducing rate is high.
Description
Technical field
The present invention relates to concrete admixture preparation fields, specifically a kind of to make high efficiency water reducing agent using lignin
Method.
Background technique
Many with water in paper making process, production 1t paper about needs 300~500m3 of water, in paper waste, not only contain
A large amount of paper making raw materials (there are about 20% raw materials to be lost with waste water), and contain a large amount of chemicals and other impurities, so if
Paper waste can cause great harm water body without any discharge is handled.Lignin system is utilized the present invention provides a kind of
The method for making high efficiency water reducing agent can produce one kind while reducing paper mill effluent and causing damages to environment water again and subtract
The high water-reducing agent of water rate complies fully with the strategy and policy and requirement of China's sustainable development.
Summary of the invention
1, present invention aim to provide a kind of method using lignin production high efficiency water reducing agent, to simplify preparation
Technique shortens preparation time and improves the water-reducing rate of made water-reducing agent, to satisfy the use demand for this purpose, the present invention is using as follows
Technical solution:
2, the present invention is implemented as follows: a kind of modified aliphatic water reducing agent preparation method, comprising the following steps:
(1) water, sodium sulfite, acetone are placed in reaction kettle and are mixed 30 minutes at 30-35 DEG C；
(2) paper mill effluent and catalyst boron trifluoride ether are added into reaction kettle, reacts 50-70 at 50-60 DEG C
Minute；
(3) formaldehyde is added dropwise into reaction kettle, time for adding is 60-90 minutes；Controlled at reacting 2- at 90-105 DEG C
2.5 hour；
(4) sodium gluconate is added in reaction kettle, controlled at 90-105 DEG C, reacts 30 minutes.
Each raw material dosage % number by weight is calculated as:
Method of the invention has the advantages that
1, preparation method total duration of the invention is 4-4.5 hour, and the reaction time is obviously shortened.
2, the present invention uses boron trifluoride ether as catalyst, so that preparation process of the invention can directly utilize papermaking
Factory's waste liquid as a raw material for production, so that production cost be effectively reduced.Meanwhile the use of the catalyst is so that the present invention
Step 2 reaction do not need external heat source, reacting liquid temperature can be made to reach 50-60 DEG C by autoreactivity heat.
3, sodium gluconate is added preparation method of the invention in the phase after the reaction, can be effectively improved this water-reducing agent and cement
Adaptation.
4, using a kind of method using lignin production high efficiency water reducing agent of the invention with naphthalene water reducer is compound answers
Used time generates synergistic effect, and respectively than the two performance when exclusive use has raising by a relatively large margin.
Specific embodiment
Embodiment one
1, a kind of method using lignin production high efficiency water reducing agent, by each raw material of following weight weighing: sodium sulfite
50kg, acetone 35kg, formaldehyde 110kg, paper mill effluent (content of lignin 30%, wt%) 230kg, boron trifluoride ether 2kg,
Sodium gluconate 3kg, water 110kg.
It follows these steps to prepare a kind of method using lignin production high efficiency water reducing agent of the invention:
(1) water, sodium sulfite, acetone are placed in reaction kettle and are mixed 30 minutes at 30-35 DEG C；
(2) paper mill effluent and catalyst boron trifluoride ether are added into reaction kettle, 50 points are reacted at 50-60 DEG C
Clock；
(3) formaldehyde is added dropwise into reaction kettle, time for adding is 60 minutes；It is small controlled at reaction 2.5 at 90-105 DEG C
When；
(4) sodium gluconate is added into reaction kettle, controlled at 90-105 DEG C, reaction can be prepared by containing for 30 minutes
Gu the modified aliphatic water reducing agent that amount is 34.5%.
The made water-reducing agent of the present embodiment meets the standard of GB8076-2008 after tested.By GB8076-2008 test method,
The made water-reducing agent of the present embodiment and common fats race water-reducing agent concrete batching performance comparison are as shown in table 1, material therefor: Taihang
42.5# ordinary portland cement.
By the test data of table 1 it can be seen that the present embodiment is made a kind of to make high efficiency water reducing agent using lignin
When method and naphthalene water reducer Application of composite, synergistic effect is generated, the performance indicators such as water-reducing rate, compressive strength rate are than the two
There is raising by a relatively large margin when being respectively used alone.And when general water-reducing agent and naphthalene water reducer Application of composite, then it does not generate this
Synergistic effect.
The comparison of 2 flowing degree of net paste of cement of table
Table 2 shows that the made modified aliphatic water reducing agent paste flowing degree of the present invention is not only above common fats race water-reducing agent,
And add the flowing degree of net paste of cement of sodium gluconate again also above the common fats race water-reducing agent to finished product.Thus illustrate,
The made modified aliphatic water reducing agent of the present invention can be effectively improved the adaptation of this water-reducing agent and cement.
Embodiment two
By each raw material of following weight weighing:
Sodium sulfite 55kg, acetone 40kg, formaldehyde 125kg, paper mill effluent (content of lignin 35%, wt%) 200kg,
Boron trifluoride ether is 3kg, sodium gluconate 5kg, water 130kg.
It follows these steps to prepare modified aliphatic water reducing agent preparation method of the invention:
(1) water, sodium sulfite, acetone are placed in reaction kettle and are mixed 30 minutes at 30-35 DEG C；
(2) paper mill effluent and catalyst boron trifluoride ether are added into reaction kettle, 70 points are reacted at 50-60 DEG C
Clock；
(3) formaldehyde is added dropwise into reaction kettle, time for adding is 90 minutes；Controlled at reacting 2 hours at 90-105 DEG C；
(4) sodium gluconate is added into reaction kettle, controlled at 90-105 DEG C, reaction can be prepared by containing for 30 minutes
Gu the modified aliphatic water reducing agent that amount is 35.8%.
Embodiment three
By each raw material of following weight weighing:
Sodium sulfite 55kg, acetone 30kg, formaldehyde 110kg, paper mill effluent (content of lignin 35%, wt%) 230kg,
Boron trifluoride ether 2kg, sodium gluconate 3kg, water 110kg.
It follows these steps to prepare modified aliphatic water reducing agent preparation method of the invention:
(1) water, sodium sulfite, acetone are placed in reaction kettle and are mixed 30 minutes at 30-35 DEG C；
(2) paper mill effluent and catalyst boron trifluoride ether are added into reaction kettle, 50 points are reacted at 50-60 DEG C
Clock；
(3) formaldehyde is added dropwise into reaction kettle, time for adding is 90 minutes；It is small controlled at reaction 2.5 at 90-105 DEG C
When；
(4) sodium gluconate is added into reaction kettle, controlled at 90-105 DEG C, reaction can be prepared by containing for 30 minutes
Gu the modified aliphatic water reducing agent that amount is 36.4%.
Claims (1)
1. a kind of method using lignin production high efficiency water reducing agent, it is characterised in that the following steps are included:
(1) water, sodium sulfite, acetone are placed in reaction kettle and are mixed 30 minutes at 30-35 DEG C；
(2) paper mill effluent and catalyst boron trifluoride ether are added into reaction kettle, is reacted 50-70 minutes at 50-60 DEG C；
(3) formaldehyde is added dropwise into reaction kettle, time for adding is 60-90 minutes；Reaction 2-2.5 is small at 90-105 DEG C of temperature of control
When；Temperature is to react 2-2.5 hours at 90-105 DEG C；
(4) sodium gluconate is added into reaction kettle, controlled at 90-105 DEG C, reacts 30 minutes；
Each raw material dosage % number by weight is calculated as:
Sodium sulfite: 45-50%；
Acetone: 35-45%；
Formaldehyde: 95-110%；
Paper mill effluent (content of lignin 30%-35%, wt%): 180-200%；
Boron trifluoride ether: 3.5-5%；
Sodium gluconate: 4-6%；
Water: 90-110%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811354886.4A CN109180046A (en) | 2018-11-14 | 2018-11-14 | A method of high efficiency water reducing agent is made using lignin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811354886.4A CN109180046A (en) | 2018-11-14 | 2018-11-14 | A method of high efficiency water reducing agent is made using lignin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109180046A true CN109180046A (en) | 2019-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811354886.4A Pending CN109180046A (en) | 2018-11-14 | 2018-11-14 | A method of high efficiency water reducing agent is made using lignin |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102320768A (en) * | 2011-06-20 | 2012-01-18 | 河北久强建材有限公司 | Method for preparing modified aliphatic water reducing agent |
| CN108609892A (en) * | 2018-05-28 | 2018-10-02 | 贵州隆盛源建材有限公司 | A method of making water-reducing agent using paper mill effluent |
| CN108675669A (en) * | 2018-06-05 | 2018-10-19 | 遵义华联建材有限公司 | A method of making polycarboxylate water-reducer using paper mill effluent |
-
2018
- 2018-11-14 CN CN201811354886.4A patent/CN109180046A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102320768A (en) * | 2011-06-20 | 2012-01-18 | 河北久强建材有限公司 | Method for preparing modified aliphatic water reducing agent |
| CN108609892A (en) * | 2018-05-28 | 2018-10-02 | 贵州隆盛源建材有限公司 | A method of making water-reducing agent using paper mill effluent |
| CN108675669A (en) * | 2018-06-05 | 2018-10-19 | 遵义华联建材有限公司 | A method of making polycarboxylate water-reducer using paper mill effluent |
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Application publication date: 20190111 |
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