CN103964730B - The method of heat-conducting oil heating synthetic fluid accelerating chemicals - Google Patents
The method of heat-conducting oil heating synthetic fluid accelerating chemicals Download PDFInfo
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- CN103964730B CN103964730B CN201410168765.6A CN201410168765A CN103964730B CN 103964730 B CN103964730 B CN 103964730B CN 201410168765 A CN201410168765 A CN 201410168765A CN 103964730 B CN103964730 B CN 103964730B
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Abstract
The invention discloses a kind of method of heat-conducting oil heating synthetic fluid accelerating chemicals, the method process comprises: first add the sodium polyacrylate solution of 0.1% ~ 0.5% in a kettle., again by sodium hydroxide: aluminium hydroxide 1.0 ~ 1.6 joins in reactor in molar ratio, adopt heat-conducting oil heating mode, be 120 DEG C ~ 140 DEG C in temperature of reaction, stirring velocity is under the condition of 40 ~ 80 revs/min, reacts after 1 ~ 3 hour, stopped reaction, cooling obtains the liquid accelerator of low alkali high stability.The advantage of this programme is that the method process is simple, is suitable for industrialization, save energy, pollute little, adopt heat-conducting oil heating, temperature of reaction is high, sufficient reacting, without precipitation, product stability is good, can place for a long time and not produce precipitation, adopt sodium polyacrylate solution as dielectric fluid, realize low mole prop0rtion synthetic fluid accelerating chemicals, basicity is low, PH < 10, performance is better than like product.
Description
Technical field
The present invention relates to a kind of material of construction, more particularly, relate to a kind of synthetic method of cement concrete admixture.
Technical background
Accelerating chemicals is the admixture making cement concrete rapid coagulation, it is indispensable admixture in sprayed concrete, and the most frequently used is the liquid accelerator of aluminate class, but due to working condition and process parameter control limited, coal-fired or the steam heating mode of most employing, the aqueous solution is adopted to produce, and this mode of production to there is energy consumption high, pollute large, temperature can not control in top condition, the situation such as cause product stability bad (separate out precipitation) and time of coagulation is defective, and basicity is up to problems such as PH > 12.
Summary of the invention
The object of the present invention is to provide a kind of method of heat-conducting oil heating synthetic fluid accelerating chemicals, the method is simple to operate, pollute little, adopt heat-conducting oil heating, adopt sodium polyacrylate solution as dielectric fluid, reaction evenly, gained accelerating chemicals quality is good, stability is high, and realize low mole prop0rtion synthetic fluid accelerating chemicals, basicity is low.
For achieving the above object, the method for heat-conducting oil heating synthetic fluid accelerating chemicals in the present invention, comprises following process:
First add the sodium polyacrylate solution of solution at 0.1%-0.5% in a kettle., make the sodium polyacrylate solution in described reactor be warmed up to 60 DEG C-80 DEG C by thermal oil indirect heating;
Be that sodium hydroxide and the aluminium hydroxide of 1.0-1.6 joins in described reactor again by mol ratio, by the further indirect heating of described thermal oil, make the temperature of reaction in described reactor be 120 DEG C-140 DEG C;
While heating, utilize the agitator in described reactor to stir with the stirring velocity of 40-80 rev/min, stop after sustained reaction 1-3 hour, cooling obtains the liquid accelerator of low alkali high stability.
Described sodium polyacrylate solution is the aqueous solution.
The concentration of described aqueous sodium polyacrylate is 0.1%-0.5%.
The mol ratio of described sodium hydroxide and aluminium hydroxide is 1.0-1.6.
Described thermal oil reacts with the sodium polyacrylate in reactor described in coil pipe type of heating, sodium hydroxide, aluminium hydroxide.
Described reactor inside is provided with spiral coil pipe, described coil pipe is communicated with the heat-conducting oil heating equipment outside described reactor, and the thermal oil after heating passes into, and described coil pipe is interior to be heated the sodium polyacrylate in described reactor, sodium hydroxide, aluminium hydroxide.
In the present invention, the method for heat-conducting oil heating synthetic fluid accelerating chemicals has the following advantages: process is simple, is suitable for industrialization, save energy, pollute little, adopt heat-conducting oil heating, temperature of reaction is high, sufficient reacting, adopts sodium polyacrylate solution as dielectric fluid, without precipitation, product stability is good, can place for a long time and not produce precipitation, realize low mole prop0rtion synthetic fluid accelerating chemicals, basicity is low, PH < 10, performance is better than like product.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the method for heat-conducting oil heating synthetic fluid accelerating chemicals in the present invention.
Fig. 2 is the structural representation of coil pipe heating in the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment in the present invention is elaborated.
In the present invention, the method for heat-conducting oil heating synthetic fluid accelerating chemicals comprises the following steps:
Adding concentration (mass percentage) is in a kettle. the aqueous sodium polyacrylate of 0.1% ~ 0.5%, the mode indirect heating reactor heated with coil pipe by YD-300 mineral oil, the coil pipe passing into YD-300 mineral oil is arranged on reactor inside, as shown in Figure 2, coil pipe is arranged in the shape of a spiral, the coil pipe in reactor is entered after nearly 100 DEG C after YD-300 mineral oil is heated outside reactor, the aqueous sodium polyacrylate in reactor is made to be warmed up between 60 DEG C to 80 DEG C, by sodium hydroxide: sodium hydroxide between 1.0 ~ 1.6 of the mol ratio of aluminium hydroxide and aluminium hydroxide join in reactor, by being heated to about 200 DEG C further to the thermal oil outside reactor again, and the coil pipe passed in reactor, make temperature of reaction in reactor between 120 DEG C ~ 140 DEG C, utilize the agitator low whipping speed in reactor to be uniform stirring under the condition of 40 ~ 80 revs/min simultaneously, react after 1 ~ 3 hour, stopped reaction, cooling obtains the liquid accelerator of low alkali high stability.
Embodiment 1
The aqueous sodium polyacrylate of 0.1% of 1000kg is first joined in reactor, 70 DEG C will be warmed up in reactor by thermal oil indirect heating, add 186kg sodium hydroxide respectively again, 362kg aluminium hydroxide, continuing to be heated to temperature of reaction is 120 DEG C, low whipping speed is under the condition of 40 revs/min, uniform stirring reacts 2 hours, rear termination reaction, obtain liquid accelerator after cooling, the PH < 9 of this liquid accelerator, the volume for cement concrete is 3%, presetting period is 2-4 minute, and final setting time is 4-8 minute.
Embodiment 2
The aqueous sodium polyacrylate of 0.3% of 1000kg is first joined in reactor, 60 DEG C will be warmed up in reactor by thermal oil indirect heating, add 240kg sodium hydroxide respectively, 360kg aluminium hydroxide, continuing to be heated to temperature of reaction is 130 DEG C, and low whipping speed is under the condition of 60 revs/min, after uniform stirring reacts 1.5 hours, termination reaction, obtains liquid accelerator after cooling, the PH < 9 of this liquid accelerator.Volume for cement concrete is 2%, and the presetting period is 2-4 minute, and final setting time is 4-8 minute.
Embodiment 3
The aqueous sodium polyacrylate of 0.4% of 1000kg is first joined in reactor, be warmed up to 80 DEG C, add 174kg sodium hydroxide respectively, 226kg aluminium hydroxide is 135 DEG C in temperature of reaction, and stirring velocity is under the condition of 70 revs/min, react after 3 hours, termination reaction, obtains liquid accelerator product after cooling, PH < 10.Volume is 4%, and the presetting period is 2-4 minute, and final setting time is 4-8 minute.
Embodiment 4
The sodium polyacrylate liquid of 0.5% of 1000kg is first joined in reactor, be warmed up to 80 DEG C, add 200kg sodium hydroxide respectively, 380kg aluminium hydroxide is 140 DEG C in temperature of reaction, and stirring velocity is under the condition of 80 revs/min, react after 1 hour, termination reaction, obtains liquid accelerator product after cooling, PH < 10.Volume is 4%, and the presetting period is 2-4 minute, and final setting time is 4-8 minute.
Embodiment 5
The sodium polyacrylate liquid of 0.2% of 1000kg is first joined in reactor, be warmed up to 80 DEG C, add 150kg sodium hydroxide respectively, 340kg aluminium hydroxide is 120 DEG C in temperature of reaction, and stirring velocity is under the condition of 80 revs/min, react after 2.5 hours, termination reaction, obtains liquid accelerator product after cooling, PH < 10.Volume is 4%, and the presetting period is 2-4 minute, and final setting time is 4-8 minute.
In sum, in the present invention, the method for heat-conducting oil heating synthetic fluid accelerating chemicals is by adopting thermal oil indirect heating, there is reaction evenly, pollute little, energy consumption is low, and temperature of reaction is high, be convenient to the advantages such as temperature control, by the accurate control of temperature, the sodium aluminate generating high stability low mole prop0rtion in sodium polyacrylate solution can be ensured, obtain the accelerating chemicals that stability is high.
Claims (7)
1. a method for heat-conducting oil heating synthetic fluid accelerating chemicals, is characterized in that, comprises following process:
First add the sodium polyacrylate solution of solution at 0.1%-0.5% in a kettle., make the sodium polyacrylate solution in described reactor be warmed up to 60 DEG C-80 DEG C by thermal oil indirect heating;
Be that sodium hydroxide and the aluminium hydroxide of 1.0-1.6 joins in described reactor again by mol ratio, by the further indirect heating of described thermal oil, make the temperature of reaction in described reactor be 120 DEG C-140 DEG C;
While heating, utilize the agitator in described reactor to stir with the stirring velocity of 40-80 rev/min, stop after sustained reaction 1-3 hour, cooling obtains the liquid accelerator of low alkali high stability.
2. the method for heat-conducting oil heating synthetic fluid accelerating chemicals according to claim 1, is characterized in that, described thermal oil is mineral oil.
3. the method for heat-conducting oil heating synthetic fluid accelerating chemicals according to claim 1, is characterized in that, described sodium polyacrylate solution is the aqueous solution.
4. the method for heat-conducting oil heating synthetic fluid accelerating chemicals according to claim 2, is characterized in that, described thermal oil is YD-300 mineral oil.
5. the method for heat-conducting oil heating synthetic fluid accelerating chemicals according to claim 1, is characterized in that, described thermal oil reacts with the sodium polyacrylate in reactor described in coil pipe type of heating, sodium hydroxide, aluminium hydroxide.
6. the method for heat-conducting oil heating synthetic fluid accelerating chemicals according to claim 5, it is characterized in that, described reactor inside is provided with spiral coil pipe, described coil pipe is communicated with the heat-conducting oil heating equipment outside described reactor, and the thermal oil after heating passes into, and described coil pipe is interior to be heated the sodium polyacrylate in described reactor, sodium hydroxide, aluminium hydroxide.
7. the method for heat-conducting oil heating synthetic fluid accelerating chemicals according to claim 1, it is characterized in that, the aqueous sodium polyacrylate of 0.3% of 1000kg is first joined in described reactor, 60 DEG C will be warmed up in described reactor by described thermal oil indirect heating, add 240kg sodium hydroxide respectively, 360kg aluminium hydroxide, continuing to be heated to temperature of reaction is 130 DEG C, low whipping speed is under the condition of 60 revs/min, after uniform stirring reacts 1.5 hours, termination reaction, liquid accelerator is obtained after cooling, the PH < 9 of this liquid accelerator.
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| CN105906225B (en) * | 2016-04-14 | 2017-09-15 | 湖北腾辰科技股份有限公司 | A kind of application of discarded sewage in liquid accelerator synthesis |
| CN108083673A (en) * | 2018-01-16 | 2018-05-29 | 山西大学 | The method for having alkali liquid quick-setting agent is prepared using the tail washings for producing methacrylaldehyde |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665336A (en) * | 2009-09-23 | 2010-03-10 | 江苏博特新材料有限公司 | Preparation method of low-alkaline liquid accelerating agent |
| CN102219433A (en) * | 2011-05-04 | 2011-10-19 | 山西潞安环保能源开发股份有限公司 | Low-resilience high-strength sprayed concrete liquid accelerating agent and preparation method thereof |
| CN102219425A (en) * | 2011-04-15 | 2011-10-19 | 中铁隧道集团有限公司 | Alkali-free liquid accelerating agent and preparation method thereof |
| CN102249592A (en) * | 2011-06-01 | 2011-11-23 | 中国水利水电科学研究院 | Alkali-free chlorine-free high-early-strength liquid accelerator and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101665336A (en) * | 2009-09-23 | 2010-03-10 | 江苏博特新材料有限公司 | Preparation method of low-alkaline liquid accelerating agent |
| CN102219425A (en) * | 2011-04-15 | 2011-10-19 | 中铁隧道集团有限公司 | Alkali-free liquid accelerating agent and preparation method thereof |
| CN102219433A (en) * | 2011-05-04 | 2011-10-19 | 山西潞安环保能源开发股份有限公司 | Low-resilience high-strength sprayed concrete liquid accelerating agent and preparation method thereof |
| CN102249592A (en) * | 2011-06-01 | 2011-11-23 | 中国水利水电科学研究院 | Alkali-free chlorine-free high-early-strength liquid accelerator and preparation method thereof |
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Address after: 044205 Ronghe chemical industry park, Wanrong County, Yuncheng City, Shanxi Province Patentee after: Shanxi jinwankang New Material Co., Ltd Address before: 044205 Shanxi city of Yuncheng province Wanrong County River Building Materials Industrial Park Patentee before: SHANXI JINDUN YUAN BUILDING MATERIALS Co.,Ltd. |