DCS Control System
System Description
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.
Computer decentralized control system is the most advanced control mode recognized by the international control circle. In recent years, we have developed a two-tower double-effect computer control system for DMF recovery process, DMF-DCS (2), and a three-tower three-effect computer control system, which can adapt to the industrial production environment and has very high reliability. Its input greatly stabilizes the production of recycling process and plays an important role in improving the output and quality of products and reducing energy consumption.
At present, the system has been successfully implemented in more than 20 large synthetic leather enterprises, and the earliest system has been in stable operation for more than 17 years.
System structure
Distributed computer control system (DCS) is a widely accepted advanced control method. It usually consists of control station, control network, operation station and monitoring network. Broadly speaking, DCS can be divided into three types: instrument type, PLC type and PC type. Among them, PLC has a very high industrial reliability and more and more applications, especially since the 1990s, many famous PLC increased analog processing and PID control functions, thus making it more competitive.
The COMPUTER control system of DMF recycling process is based on PC-DCS, using German SIEMENS system as the control station, and ADVANTECH industrial computer as the operating station, equipped with large screen LED, printer and engineering keyboard. A high-speed control communication network is adopted between the operation station and the control station.
Control function
The control station is composed of parameter data collector ANLGC, switch parameter data collector SEQUC, intelligent loop controller LOOPC and other decentralized control methods. All kinds of controllers are equipped with microprocessors, so they can work normally in backup mode in case of CPU failure of the control station, fully guaranteeing the reliability of the system.
Related products
-
DMAC Solvent Recovery Plant
DMAC, as an excellent polar solvent, is widely used in polyurethane, pharmaceuticals, pesticides, high molecular membranes (such as PVDF), and electronic chemicals. However, DMAC has certain toxicity and poor biodegradability, and its waste liquid must be effectively treated and recycled. Traditional recovery methods (such as ordinary distillation) have problems such as high energy consumption, limited product purity, and easy decomposition. This article will focus o...
-
DMA Treatment Plant
Main Features 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. We have developed the DMA wastewater purification process, can get about 40% indus...
-
Residue Dryer
Equipment Description 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. Equipment Picture
-
Toluene Recovery Plant
Equipment Description 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. Toluene waste treatment capacity is 12~ 25t / h Toluene recovery rate ≥99% ...
-
PLC Control System in DMF Recovery
1. Process Overview: What is DMF Recovery? DMF is a common industrial solvent. Due to its cost and environmental regulations, it is often recovered from waste streams (e.g., from pharmaceutical or synthetic leather industries) rather than disposed of. The most common method is Distillation: Feeding: The waste DMF mixture is pumped from a storage tank into a distillation column. Heating: The mixture is heated in a reboiler. DMF has a higher boiling point than water a...
-
MVR in DMF recovery
MVR in DMF recovery The MVR (Mother Vapor Recompression) function in DMF (Dimethylformamide) recovery systems is a key energy-saving technology used to enhance efficiency in solvent recovery processes, particularly in industries like pharmaceuticals, chemicals, and synthetic leather manufacturing, where DMF is widely used. Role of MVR in DMF Recovery Plant Energy Efficiency Traditional distillation for DMF recovery consumes significant energy due to high boiling p...