Gas desulfurization-denitration-dedusting comprehensive intelligent control system of steel pellet sintering machine

Abstract

The invention discloses a gas desulfurization-denitration-dedusting comprehensive intelligent control system of a steel pellet sintering machine. The system comprises a whole flue gas desulfurization-denitration-dedusting system, a PLC, a monitoring computer and a control cabinet. A monitoring device, a transmission device and a control device are arranged in the desulfurization-denitration-dedusting system of the steel pellet sintering machine. The signal output end of the monitoring device is connected with the input end of the PLC through the transmission device; the output end of the PLC is connected with the whole desulfurization-denitration-dedusting comprehensive intelligent control system and the control cabinet respectively; the PLC is connected with a control computer. In the system disclosed by the invention, a wireless sensor network is adopted, and the research results of multiple cross subjects such as the sensor technology, the embedded computer technology, the distributed information processing technology and the wireless communication technology are integrated. The system can flexibly and accurately monitor, perceive and collect the data of various environments or detection objects in the network distribution equipment in real time and process the data to obtain the detailed and accurate information, and then the information is delivered to a control terminal to be processed, thereby guaranteeing the stable operation and up-to-standard emission of the desulfurization-denitration-dedusting system.

Description

technical field [0001] The invention relates to the technical field of flue gas purification, the field of intelligent logic terminal control, and the field of wireless information transmission, in particular to a joint intelligent control system for desulfurization, denitrification and dust removal of flue gas from a steel pellet sintering machine. Background technique [0002] For many years, my country has been using stand-alone data collection and analysis, manual tabulation and other work methods to monitor and control flue gas pollution purification and control. Due to single-machine collection and analysis data, manual summary tabulation, and feedback data transmission are not timely, it is difficult to control steel balls. Precise control and accurate data monitoring of the flue gas purification treatment of the sintering machine, and timely overall grasp. What's more, it is only one-way control and detection of dust removal, desulfurization, and denitrification of th...

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Problems solved by technology

[0005] (1) Cleaning effect, improper control of pressure difference, failure of dust collector;

[0006] (2) The temperature is not properly controlled, and the bag is frosted;

[0007] (3) Dust emission is not up to standard, affecting desulfurization and denitrification

[0009] (1) The control of the injection amount of the reactant, if it is too much, the operation cost will be high, and the energy consumption will be high, and if it is too little, the desulfurization reaction will not be complete;

[0010] (2) The reaction temperature is not well controlled and the reaction is not complete;

[0011] (3) Incomplete water quantity control reflects poor effect

[0013] (1) The oxygen content is too high; the catalyst has low oxidation resistance, high oxygen content, and the catalyst is easy to corrode;

[0014] (2) High sulfur content; catalyst poisoning and failure;

[0015] (3) The denitrification reagent is sprayed unevenly, and the catalytic reaction is not complete;

[0016] (4) The injection amount of the denitrification reagent is too large, and the escape rate increases, causing secondary pollution to the environment;

[0017] (5) If the temperature is not within the reaction range, the denitrification will fail;

[0018] (6) The dust is too large and the catalyst is blocked;

[0019] (7) The dilution of the denitrification reagent is not perfect, the denitrification effect is poor, and there are potential safety hazards

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