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Method for synthesizing dispersing agent from refined benzene waste acid
The invention discloses a method for synthesizing a dispersing agent from refined benzene waste acid in the technical field of refined benzene waste acid recycling. The synthesis method comprises the steps of (1) weighing raw materials in parts by mass; (2) adding naphthalene substances into a reaction kettle with tail gas recovery equipment; (3) slowly adding a sulfonating agent into the reaction kettle, controlling the adding time to be 25-35 minutes, sulfonating at the temperature of 155-160 DEG C and keeping the temperature for 1-2 hours after the adding is finished, then adding sodium sulfate and refined benzene waste acid into the reaction kettle, and continuously keeping the temperature for 0.5-2 hour; (4) reducing the temperature in the reaction kettle to 96-110 DEG C, slowly dropwise adding a formaldehyde solution into the reaction kettle, controlling the dropwise adding time to be 2-4 hours, and after dropwise adding is finished, keeping the temperature at 100-110 DEG C for 1.5-3 hours; and (5) after the condensation and heat preservation in the step (4) are finished, continuously cooling the reaction kettle to 75-85 DEG C, then adding a sodium hydroxide solution into the reaction kettle, and regulating the pH value to 7-10. According to the invention, the problem that the refined benzene waste acid is difficult to treat is solved, regeneration and cyclic utilization of resources are achieved, the cost of the dispersing agent is reduced, and good economic benefits are achieved.
本发明公开了精苯废酸再利用技术领域的一种精苯废酸用于合成分散剂的方法，合成方法包括以下步骤：(1)称取以下质量份原料；(2)向带有尾气回收设备的反应釜中加入萘类物质；(3)向反应釜中缓慢加入磺化剂，控制加入时长为25‑35min，加入完成后，于155‑160℃磺化保温1‑2h，接着向反应釜中加入硫酸钠和精苯废酸，继续保温0.5‑2h；(4)反应釜中的温度降低为96‑110℃并向其中缓慢滴加甲醛溶液，控制滴加时长为2‑4h，滴加完成后，于100‑110℃保温1.5‑3h；(5)在步骤(4)缩合保温结束后，反应釜继续降温至75‑85℃，随后向反应釜中加入氢氧化钠溶液，调控PH为7‑10；本发明解决了精苯废酸难处理问题，又实现资源的再生循环利用，降低了分散剂的成本，有较好的经济效益。
Method for synthesizing dispersing agent from refined benzene waste acid
The invention discloses a method for synthesizing a dispersing agent from refined benzene waste acid in the technical field of refined benzene waste acid recycling. The synthesis method comprises the steps of (1) weighing raw materials in parts by mass; (2) adding naphthalene substances into a reaction kettle with tail gas recovery equipment; (3) slowly adding a sulfonating agent into the reaction kettle, controlling the adding time to be 25-35 minutes, sulfonating at the temperature of 155-160 DEG C and keeping the temperature for 1-2 hours after the adding is finished, then adding sodium sulfate and refined benzene waste acid into the reaction kettle, and continuously keeping the temperature for 0.5-2 hour; (4) reducing the temperature in the reaction kettle to 96-110 DEG C, slowly dropwise adding a formaldehyde solution into the reaction kettle, controlling the dropwise adding time to be 2-4 hours, and after dropwise adding is finished, keeping the temperature at 100-110 DEG C for 1.5-3 hours; and (5) after the condensation and heat preservation in the step (4) are finished, continuously cooling the reaction kettle to 75-85 DEG C, then adding a sodium hydroxide solution into the reaction kettle, and regulating the pH value to 7-10. According to the invention, the problem that the refined benzene waste acid is difficult to treat is solved, regeneration and cyclic utilization of resources are achieved, the cost of the dispersing agent is reduced, and good economic benefits are achieved.
本发明公开了精苯废酸再利用技术领域的一种精苯废酸用于合成分散剂的方法，合成方法包括以下步骤：(1)称取以下质量份原料；(2)向带有尾气回收设备的反应釜中加入萘类物质；(3)向反应釜中缓慢加入磺化剂，控制加入时长为25‑35min，加入完成后，于155‑160℃磺化保温1‑2h，接着向反应釜中加入硫酸钠和精苯废酸，继续保温0.5‑2h；(4)反应釜中的温度降低为96‑110℃并向其中缓慢滴加甲醛溶液，控制滴加时长为2‑4h，滴加完成后，于100‑110℃保温1.5‑3h；(5)在步骤(4)缩合保温结束后，反应釜继续降温至75‑85℃，随后向反应釜中加入氢氧化钠溶液，调控PH为7‑10；本发明解决了精苯废酸难处理问题，又实现资源的再生循环利用，降低了分散剂的成本，有较好的经济效益。
Method for synthesizing dispersing agent from refined benzene waste acid
一种精苯废酸用于合成分散剂的方法
MA LITAO (author) / DONG CUIPING (author) / XU PEIYANG (author) / YANG GUOWU (author) / XING KAI (author) / CUI YAN (author) / YANG DAOSHUN (author)
2021-04-09
Patent
Electronic Resource
Chinese
| European Patent Office | 2020
| European Patent Office | 2015
| European Patent Office | 2015