Method for producing coating drier through module control

Abstract

The invention relates to a method for producing a coating drier through module control, which comprises the following steps of: (1) performing saponification reaction, namely respectively pumping isooctanoic acid or naphthenic acid serving as a raw material, alkali liquor, inorganic metal salt solution and solvent oil into respective elevated tank by using a pump, adding the isooctanoic acid or naphthenic acid serving as the raw material into a reaction kettle through a module set by a Mettler-Toledo weighing display controller, and performing saponification reaction with stirring; and (2) adding inorganic salt solution according to the set module, performing double decomposition reaction with stirring, dehydrating reaction liquid, adding No.200 solvent oil to dilute the reaction liquid, and filtering to remove solid impurities so as to obtain a coating drier product. The yield of the product produced by the method is 3 to 5 percent higher than that of the product produced by the prior art; product quality is stable, work environment is clean, and the body health of operating personnel is facilitated.

Description

technical field [0001] The invention relates to a preparation method of a liquid metal carboxylate paint drier, in particular to a method for controlling the production of the paint drier by using a module set by a Mettler-Toledo weighing display controller. Background technique [0002] Liquid metal carboxylate (Metal carboxylate) is a very important class of fine chemical products, mainly used in paint, ink drier. Its main production process is: saponification reaction of organic acid and lye, and then double decomposition reaction with metal inorganic salt. The reaction equation is as follows: [0003] Saponification reaction: CH 3 (CH 2 ) 3 C(CH 3 ) 2 COOH+NaOH [0004] →CH 3 (CH 2 ) 3 C(CH 3 ) 2 COONa+H 2 o [0005] Metathesis reaction: n CH 3 (CH 2 ) 3 C(CH 3 ) 2 COONa+RSO 4 [0006] →[CH 3 (CH 2 ) 3 C(CH 3 ) 2 COO] n R+(Na) n SO 4 [0007] Wherein R is a metal ion, and n is a positive integer of 2-4. [0008] The charging process of exi...

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Problems solved by technology

[0010] ①Because the correctness of the scale reading depends on the subjective judgment of the person who reads the reading, and because the original process is that the raw material is directly pumped into the reactor without going through the high-level tank, this leads to relatively unstable quality of each batch of products. big difference

[0011] ② Each batch of raw materials (200kg) per barrel must be repeatedly weighed up and down. The labor intensity of the workers is high and the labor efficiency is low.

[0012] ③Using a vacuum tube to pump materials is prone to splashing, which affects the environment and is not good for the physical and mental health of workers

[0013] ④ Use mechanical scales, the minimum accuracy is 0.1kg, and the accuracy is low

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