Energy-saving cement grinding aid mother liquor as well preparation method and application thereof
A technology of cement grinding aid and mother liquor, which is applied in the field of cement grinding aid materials, can solve problems such as unsatisfactory cement strengthening effect, unstable grinding aid effect, and influence on cement strength, so as to improve grinding aid effect, increase cement strength, and use low volume effect
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Embodiment 1
[0013] Example 1: Add 2000kg of ethanol, 1800kg of urea, 4000kg of 1,4-butenediol into the reaction kettle, add 200kg of HZSM-5 molecular sieve catalyst, seal it, and start to heat up; when the temperature rises to 90°C, stop heating, The temperature was naturally raised to 105° C., the pressure in the reactor was controlled to 1.5 MPa, and the reaction was carried out for 5 hours. Turn on the cooling water to cool down and cool down to room temperature. The feed liquid enters the filter press to filter the molecular sieve catalyst. The feed liquid enters the vacuum distillation kettle for vacuum distillation of the solvent. The temperature is controlled at 80°C. The product is the cement grinding aid mother liquor A.
Embodiment 2
[0014] Example 2: Add 2100kg of ethanol, 1500kg of urea, and 4400kg of vinyl alcohol into the reactor, add 200kg of HMCM-22 molecular sieve catalyst, seal it, and start to heat up; when the temperature rises to 90°C, stop heating and let it naturally rise to 110 ℃, control the pressure in the reactor to 1.5MPa, after 6 hours of reaction, turn on the cooling water to cool down, cool down to room temperature, the feed liquid enters the filter press to filter the molecular sieve catalyst, and the feed liquid enters the vacuum distillation pot to distill the solvent under reduced pressure. The temperature is controlled at 80°C, the low boilers are directly used in the next batch of solvents, and the high boilers are the cement grinding aid mother liquor B.
Embodiment 3
[0015] Example 3: Add 1500kg of ethanol, 1900kg of urea, 4400kg of propenyl alcohol, 200kg of HMCM-22 molecular sieve catalyst into the reaction kettle, seal it, and start to heat up; when the temperature rises to 80°C, stop heating and let it naturally rise to 90°C , control the pressure in the reactor to 1.3MPa, after reacting for 8 hours, turn on the cooling water to cool down, and cool down to room temperature, the feed liquid enters the filter press to filter the molecular sieve catalyst, and the feed liquid enters the vacuum distillation kettle to distill the solvent under reduced pressure. The temperature is controlled at 75°C, the low boilers are directly used in the next batch of solvents, and the high boilers are the cement grinding aid mother liquor C.
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