A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Resource utilization method of 3-methyl-2-nitrobenzoic acid wastewater
The invention provides a resource utilization method of 3-methyl-2-nitrobenzoic acid wastewater. The method comprises the following steps of: adding wastewater into a reaction kettle, adding clear water or not, uniformly stirring and mixing, adding a certain amount of sulfonating agent, uniformly stirring and mixing, adding alkali to adjust the pH value, sulfonating, keeping the temperature, dropwise adding acetone, continuing to slowly dropwise add formaldehyde after dropwise adding of acetone, carrying out condensing and keeping the temperature after dropwise adding of formaldehyde, and carrying out cooling after the temperature is kept. By means of the resource utilization method, the wastewater can be directly used as a synthesis raw material of a sulfonated acetone formaldehyde condensate dispersing agent without other treatment, and the obtained dispersing agent can improve the strength of concrete and improve the safety performance of buildings.
本发明提供了一种3‑甲基‑2‑硝基苯甲酸废水的资源化利用方法，包括以下步骤：向反应釜中加入废水，加入清水或不加清水，搅拌混合均匀后，加入一定量的磺化剂，搅拌混合均匀，加入碱调节pH值，磺化保温，滴加丙酮，丙酮滴加完毕，继续缓慢滴加甲醛，滴加完毕，缩合保温，保温结束降温即可。通过本发明的资源化利用方法，无需对废水进行其他处理即可直接作为磺化丙酮甲醛缩合物类分散剂的合成原料，得到的分散剂可提高混凝土的强度，提高建筑物的安全性能。
Resource utilization method of 3-methyl-2-nitrobenzoic acid wastewater
The invention provides a resource utilization method of 3-methyl-2-nitrobenzoic acid wastewater. The method comprises the following steps of: adding wastewater into a reaction kettle, adding clear water or not, uniformly stirring and mixing, adding a certain amount of sulfonating agent, uniformly stirring and mixing, adding alkali to adjust the pH value, sulfonating, keeping the temperature, dropwise adding acetone, continuing to slowly dropwise add formaldehyde after dropwise adding of acetone, carrying out condensing and keeping the temperature after dropwise adding of formaldehyde, and carrying out cooling after the temperature is kept. By means of the resource utilization method, the wastewater can be directly used as a synthesis raw material of a sulfonated acetone formaldehyde condensate dispersing agent without other treatment, and the obtained dispersing agent can improve the strength of concrete and improve the safety performance of buildings.
本发明提供了一种3‑甲基‑2‑硝基苯甲酸废水的资源化利用方法，包括以下步骤：向反应釜中加入废水，加入清水或不加清水，搅拌混合均匀后，加入一定量的磺化剂，搅拌混合均匀，加入碱调节pH值，磺化保温，滴加丙酮，丙酮滴加完毕，继续缓慢滴加甲醛，滴加完毕，缩合保温，保温结束降温即可。通过本发明的资源化利用方法，无需对废水进行其他处理即可直接作为磺化丙酮甲醛缩合物类分散剂的合成原料，得到的分散剂可提高混凝土的强度，提高建筑物的安全性能。
Resource utilization method of 3-methyl-2-nitrobenzoic acid wastewater
一种3-甲基-2-硝基苯甲酸废水的资源化利用方法
DONG CUIPING (author) / MA LITAO (author) / QIAO QIONGQIONG (author) / YOU JIANJIAN (author) / XU PEIYANG (author) / YANG DAOSHUN (author) / ZHU HAITAO (author)
2020-10-30
Patent
Electronic Resource
Chinese
IPC:
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C10L
FUELS NOT OTHERWISE PROVIDED FOR
,
Anderweitig nicht vorgesehene Brennstoffe
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