Products
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DMF Solvent Recovery Plant
After the DMF solvent from the production process is preheated, it enters the dehydrating column. The dehydrating column is provided with heat source by the steam on the top of the rectification column. The DMF in the column tank is concentrated and pumped into the evaporation tank by the discharge pump. After the waste solvent in the evaporation tank is heated by the feed heater, the vapor phase enters the rectification column for rectification, and part of the water is recovered and returned to the evaporation tank with DMF for re-evaporation. DMF is extracted from distillation column and processed in deacidification column. The DMF produced from the side line of the deacidification column is cooled and fed into the DMF finished product tank.
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DMF Waste Gas Recovery Plant
In the light of the dry & wet production lines of the synthetic leather enterprises emitted DMF exhaust gas, the DMF waste gas recovery plant can make the exhaust reaches the requirements of environmental protection, and recycling the DMF components, using high performance fillers make DMF recovery efficiency higher. The DMF recovery can reach above 95%.
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DMAC Solvent Recovery Plant
This DMAC recovery system uses five-stage vacuum dehydration and one-stage high vacuum rectification to separate DMAC from water, and combines with vacuum deacidification column to obtain DMAC products with excellent indexes. Combined with evaporation filtration and residual liquid evaporation system, the impurities mixed in DMAC waste liquid can form solid residue, improve the recovery rate and reduce pollution.
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DMA Treatment Plant
During the DMF rectifying and recovery process, due to the high temperature and Hydrolysis, parts of the DMF will be disintergrated to FA and DMA. The DMA will cause odor pollution, and bring serious impact for the operation environment and the enterprise. To follow the idea of Environment protection, the DMA waste should be incinerated, and discharged without pollution.
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Toluene Recovery Plant
The toluene recovery plant in the light of the super fiber plant extract section, innovate the single effect evaporation for double-effect evaporation process, to reduce energy consumption by 40%, combined with falling film evaporation and the residue processing continuous operation, reducing the polyethylene in the residual toluene, improve the recovery rate of toluene.
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Residue Dryer
The residue dryer pioneered the development and promotion can make the waste residue produced by DMF recovery device completely dry, and form slag formation. To improve the DMF recovery rate, reduce the pollution of the environment, reducing the labor intensity of workers, too. The dryer has been in a number of enterprises to obtain good results.
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Dry Solvent Recovery Plant
Dry process production line emissions except DMF also contains aromatic, ketones, lipids solvent, pure water absorption on such solvent efficiency is poor, or even no effect. The Company developed the new dry solvent recovery process, revolutionized by the introduction of ionic liquid as the absorbent, can be recycled in the tail gas of solvent composition, and has the great economic benefit and environmental protection benefit.
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DCS Control System
DMF recovery process is a typical chemical distillation process, characterized by a large degree of correlation between process parameters and a high requirement for recovery indicators. From the current situation, the conventional instrument system is difficult to achieve real-time and effective monitoring of the process, so the control is often unstable and the composition exceeds the standard, which affects the production efficiency of enterprises. For this reason, our company and Beijing University of Chemical Technology jointly developed THE DCS control system of DMF recycling engineering computer.