Sodium Dimethyldithiocarbamate CAS 128-04-1

The entire production process of sodium dimethyldithiocarbamate is divided into six processes, alkali dissolution process, mixing process, synthesis process, cooling crystallization process, centrifugation process and product packaging and storage process.

• Alkali-dissolving process: First, turn on and stir the alkali-dissolving kettle, add 3.6 tons of mother liquor, take Jiaolong to transport 600 kg of flake alkali to the alkali-dissolving kettle, control the temperature below 60℃, and achieve full dissolution within 3 hours. The solution was allowed to stand, and after the cooling and precipitation was completed, the base mother was added dropwise to the reaction kettle.
• Mixing process: Under the condition of uninterrupted stirring, pump 33% dimethylamine into the reaction kettle containing the alkali mother liquor at an approximately constant rate, and control the temperature below 25 °C.
• Synthesis process: under the condition of uninterrupted stirring, the prepared carbon disulfide is slowly dripped into the reaction kettle containing the mixture of dimethylamine and alkali-containing mother liquor through the metering tank. The temperature of this process is controlled below 35 ° C. After the carbon disulfide is added , the reaction kettle was stirred for another half an hour, when the reaction was complete, the temperature dropped to about 20 °C.
• Cooling and crystallization process: The synthetic liquid that has completely reacted in the reactor is placed in the middle tank for natural cooling and crystallization. After a large amount of sodium dimethyldithiocarbamate crystallizes out, centrifugation can be performed.
• Centrifugation process: The solid-liquid mixture obtained in the cooling and crystallization process is sent to a centrifuge for centrifugation in several times, the mother liquor obtained by centrifugation is placed in the mother liquor tank, and the solid sodium dimethyldithiocarbamate is sent to the silo.
• Packaging process: Pour the sodium dimethyldithiocarbamate in the silo into the automatic packaging machine, set the specifications for automatic packaging, the conveyor belt will send the packaged finished products to the palletizer for automatic stacking, which can be stacked in multiple layers, and then pushed out , and finally transported by forklift to the warehouse for storage. The exhaust gas generated in the whole production process is sent to different exhaust gas towers for exhaust gas treatment according to different exhaust gas types. The function of nitrogen is to maintain the pressure balance of the container and prevent the clogging of the feed port, etc.