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Fuzzy controller of denitrated urea pyrolysis process

A fuzzy controller, urea technology, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problems of insufficient pyrolysis amount and incomplete pyrolysis, achieve stable denitrification efficiency and improve reliability , to avoid the effect of equipment blockage

Active Publication Date: 2016-04-13
国家电投集团远达环保装备制造有限公司
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Problems solved by technology

[0003] The present invention provides a fuzzy controller for the denitrification urea pyrolysis process just aiming at the technical problems existing in the prior art. The fuzzy controller overcomes the inherent defects of the existing urea pyrolysis control system, and it is suitable for the denitrification urea pyrolysis process The automatic control process avoids problems such as incomplete pyrolysis and insufficient pyrolysis

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  • Fuzzy controller of denitrated urea pyrolysis process
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  • Fuzzy controller of denitrated urea pyrolysis process

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Embodiment 1

[0028] Embodiment 1: see figure 1 , figure 2 , the urea pyrolysis treatment process is that the urea solution stored in the urea solution storage tank 2 passes through the urea supply pump 3 along the urea solution pipeline 6 , is atomized by the regulating valve 7 , and then enters the urea pyrolysis furnace 8 . The hot air for pyrolysis is transported by the dilution fan 1 to the air heater 4 to be heated to the pyrolysis temperature, and then sent to the urea pyrolysis furnace 8 through the hot air pipeline 5 to mix and pyrolyze the atomized urea droplets. The final hot ammonia gas is sent to the denitrification reactor 9 through the hot ammonia gas pipeline 10 for denitrification reaction to complete the entire process flow, and the flow rate of the urea solution is controlled through the regulating valve 7 to achieve flow matching.

[0029] The existing urea pyrolysis adopts the traditional PID adjustment method, which is a single-loop closed-loop control, and there are...

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Abstract

The invention discloses a fuzzy controller of a urea pyrolysis device. According to the fuzzy controller, the flow of a urea solution is adopted as a control target to perform automatic control; a urea supply pump conveys the urea solution in a urea solution storage tank to an atomization spray gun at the middle of a urea pyrolysis furnace through a urea pipeline; hot air for pyrolysis enters the pyrolysis furnace from the upper part of the pyrolysis furnace; the atomization spray gun sprays urea solution droplets into the pyrolysis furnace; and the high-temperature heat of the hot air is utilized to perform pyrolysis on the urea solution droplets. With the fuzzy controller adopted, inherent defects of an existing urea pyrolysis control system can be eliminated. The fuzzy controller is suitable for the automatic control process of the denitrated urea pyrolysis process, so that problems such as incomplete pyrolysis and insufficient heat can be solved.

Description

technical field [0001] The invention belongs to the field of flue gas denitrification treatment process control, and relates to a fuzzy controller used for flue gas denitrification urea pyrolysis process. Background technique [0002] Selective catalytic reduction (SCR) flue gas denitrification technology is the most widely used flue gas denitrification technology in my country. One of the most important links in this technology is the acquisition of reducing agent ammonia. One of the main process routes is By pyrolysis of urea, urea is decomposed into ammonia and carbon dioxide. The specific process is to use high-temperature air as a heat source to continuously blow high-temperature air into the urea pyrolysis furnace. According to the concentration of nitrogen oxides at the outlet of the denitrification device, by controlling the flow rate of the urea solution, ammonia gas with different flow rates is decomposed and produced in the denitrification device. The nitrogen oxi...

Claims

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Application Information

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IPC IPC(8): G05B13/02
CPCG05B13/0275
Inventor 陈茂荣沈凯
Owner 国家电投集团远达环保装备制造有限公司
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