4 Production Method Summarization

4。1 Main reaction equation:

In this paper, stearyl alcohol polyoxyethylene ether and maleic anhydride are esterified to form monoester firstly。 And then the sodium sulfite was sulfonated to produce stearyl alcohol polyoxyethylene ether sulfosuccinate monoester。 The reaction equation is as follows:

4。2 Production process

mono-esterification reaction: push the nitrogen into the enamel reactor with a stirrer and make it vacuum。 After that we should add the required raw materials in turn to the reactor。 Importantly we should do anything base on the initial preparation。

  Control test: After reaching the end of the esterification reaction, the pH of the semi-finished product was adjusted to neutral by adding 3% NaOH aqueous solution。

sulfonation reaction: the conditioned material was pumped into the vacuum sulfonation reactor, at the same time we should add sulfonation reaction materials as required to ensure the reaction。

Storage and packaging: After the sulfonation reaction, the production should be done overnight and reuse a small amount of turbid sulfonates to the next batch of sulfonated。 Finally, the reaction product is placed in a storage tank and then packaged。

4。3 Main production control points

Mono-esterification reactor: in the reaction process, controlling the rate of heating so that the reaction smoothly。 When the rate of sampling test is 97% or higher and the end temperature at 80℃ ± 5℃, we can finish it。

Adjust the pH: stirring for 0。5 hours after adding 3% NaOH aqueous solution slowly。 At this time if the pH is neutral, continue the process, otherwise continue to add alkali adjustment until the pH is neutral。

Sulfonation reaction: The air in the sulfonation reactor is vented and make the reactor sealed。 The semi-finished product was cooled to 60 ℃and then pumped them into the sulfonation reaction kettle。 The mixture was stirred and rapidly heated to bring the pressure in the reaction kettle to 0。1-0。25 MPa and control the temperature at 140 ° C for 12 hours。

目录

1绪论 1

2总论 2

2。1 课题研究背景 2

2。2 产品简介及其价值 2

2。3 产品国内外发展历程 2

2。3。1国内发展历程 3

2。3。2国外发展历程 3

2。4 硬脂醇磺基琥珀酸单酯钠的合成方法 3

2。5 设计方案论证 4

2。5。1原料的选择 4

2。5。2生产方法的可行性分析 5

3硬脂醇聚氧乙烯醚磺基琥珀酸单酯钠的生产工艺 6

3。1 合成硬脂醇聚氧乙烯醚磺基琥珀酸单酯钠的反应方程式 6

3。2 本次设计的生产工艺流程 6

4主要原材料的物理性质及产品规格 7

4。1 主要原料的物理性质 7

4。2 主要产品的物理性质 7

5 工艺计算 9

5。1 物料衡算 9

5。1。1 物料衡算总依据 9

5。1。2单酯化反应的设计依据及物料衡算 9

5。1。3 磺化反应的设计依据及物料衡算