Monitoring and automatic control system in desulfurization process for magnesium-based seawater ships
A technology of automatic control system and desulfurization process, which is applied in separation methods, chemical instruments and methods, and separation of dispersed particles, and can solve problems such as technical and process difficulties in marine desulfurization research and development
Active Publication Date: 2011-08-17
江苏合益环境工程有限公司
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[0002] The desulfurization index of ships is stricter than that of general industrial desulfurization, and is restricted by the specific environment on board. It is very difficult to develop and apply technologies and processes for marine desulfurization, which is still blank at home and abroad.
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[0024] The present invention will be described in detail below in conjunction with the examples.
[0025] Such as figure 2 As shown, the hardware system of the present invention includes components such as industrial control machine, PLC, PLC analog input and output modules, primary instruments, and on-site actuators. Among them, the industrial control machine, router, and Ethernet form the upper computer unit; PLC, PLC analog input and output modules, primary instruments, and actuators form the on-site data acquisition and execution unit. Primary instruments include pH meters, liquid level gauges, thermocouples installed in slurry tanks and slurry tanks, slurry flowmeters installed in slurry delivery pipelines, flue gas flowmeters installed in flue ducts, and installed in desulfurization towers. SO 2 Analyzer probe, installed at the inlet of the inlet flue gas for SO 2 Concentration measuring device.
[0026] Magnesium-seawater method marine desulfurization process: lead...
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The invention discloses a monitoring and automatic control system in a desulfurization process for magnesium-based seawater ships, which relates to the field of desulfurization and automatic control of ship smoke. The system consists of an industrial controller, a programmable logic controller (PLC), a PLC analog input and output module, a primary instrument, a site execution mechanism and the like, wherein the PLC is used for controlling a site execution system, adjusting the frequency of a circulating pump frequency converter according to the concentration of treated SO2, adjusting the pumping amount of slurry according to the PH value of slurry in a slurry pool, adjusting the entrance amount of seawater according to the temperature at various places in a desulfurization tower and adjusting the work state of a water pump according to the liquid level in the desulfurization tower; and the industrial controller is used for carrying out data processing and central control by using configuration software, displaying equipment state data in real time and printing various reports. By means of the invention, the content of SO2 is tracked in real time, the amount of magnesium oxide and the amount of the seawater are adjusted in time and the optimal control of the desulfurization rate is realized.
Description
technical field [0001] The invention relates to the technical field of flue gas desulfurization, in particular to a monitoring and automatic control system for magnesium method and seawater method desulfurization process. Background technique [0002] The desulfurization index of ships is stricter than that of general industrial desulfurization, and is restricted by the specific environment on board. The research and development and application technology and process of marine desulfurization are very difficult, and it is still blank at home and abroad. The desulfurization efficiency of the magnesium method can reach 99%. Magnesium-based desulfurization also has the advantages of no secondary pollution, small footprint, no scaling, and low operating costs. Furthermore, considering the working conditions of the ship, it is easy to obtain sea water and difficult to obtain fresh water. Therefore, magnesium-based-seawater desulfurization technology is an effective desulfurizatio...
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IPC IPC(8): B01D53/80B01D53/50
Inventor 李铁朱益民唐晓佳郝阳
Owner 江苏合益环境工程有限公司