Method for producing pentaerythritol, strontium formate and sodium sulfate with waste liquor generated during preparation of pentaerythritol
一种季戊四醇、硫酸钠的技术,应用在羧酸盐制备、硫酸盐/硫酸氢盐制备、羟基化合物的分离/纯化等方向,能够解决环境污染、浪费有价值的物质等问题,达到工艺及生产设备简单、减轻污染、显著社会效益和经济效益的效果
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Embodiment 1
[0021] A method for producing pentaerythritol co-produced strontium formate and sodium sulfate with waste liquid produced by preparing pentaerythritol, comprising the following preparation steps:
[0022] Step A, the waste liquid (if calculated according to 1000Kg, then wherein, containing sodium formate 300Kg, containing pentaerythritol 80Kg) produced in the low-temperature condensation method production pentaerythritol process earlier is sent in the first underpressure distiller and carry out underpressure distillation; Discharge when saturated, then cool and crystallize with the first graded cooler, and successively obtain pentaerythritol crystals and sodium formate crystals;
[0023] Step B, washing and drying the pentaerythritol crystals obtained in step A with the first washing and drying machine, the first dryer, and the first pulverizer in turn, washing and drying the machine, the dryer, and pulverizing to obtain 80Kg of pentaerythritol products;
[0024] Step C, the s...
Embodiment 2
[0030] A method for producing pentaerythritol co-produced strontium formate and sodium sulfate with waste liquid produced by preparing pentaerythritol, comprising the following preparation steps:
[0031] Step A, the waste liquid (if calculated according to 1000Kg, then wherein, containing sodium formate 300Kg, containing pentaerythritol 80Kg) produced in the low-temperature condensation method production pentaerythritol process earlier is sent in the first underpressure distiller and carry out underpressure distillation; Discharge when saturated, then cool and crystallize with the first graded cooler, and successively obtain pentaerythritol crystals and sodium formate crystals;
[0032] Step B, washing and drying the pentaerythritol crystals obtained in step A with the first washing and drying machine, the first dryer, and the first pulverizer in turn, washing and drying the machine, the dryer, and pulverizing to obtain 80Kg of pentaerythritol products;
[0033] Step C, the s...
Embodiment 3
[0039] A method for producing pentaerythritol co-produced strontium formate and sodium sulfate with waste liquid produced by preparing pentaerythritol, comprising the following preparation steps:
[0040] Step A, the waste liquid (if calculated according to 1000Kg, then wherein, containing sodium formate 300Kg, containing pentaerythritol 80Kg) produced in the low-temperature condensation method production pentaerythritol process earlier is sent in the first underpressure distiller and carry out underpressure distillation; Discharge when saturated, then cool and crystallize with the first graded cooler, and successively obtain pentaerythritol crystals and sodium formate crystals;
[0041] Step B, washing and drying the pentaerythritol crystals obtained in step A with the first washing and drying machine, the first dryer, and the first pulverizer in turn, washing and drying the machine, the dryer, and pulverizing to obtain 80Kg of pentaerythritol products;
[0042] Step C, the s...
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