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Grate-kiln pelletizing bed temperature field indirect monitoring method and device thereof

A technology of chain grate machine and temperature field, which is applied in the direction of temperature control, non-electric variable control, control/regulation system, etc. Stability and other issues, to avoid large overshoot, overcome temperature fluctuations, and facilitate popularization and application.

Inactive Publication Date: 2008-03-12
江苏宏大特种钢机械厂有限公司 +1
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Problems solved by technology

[0005] The monitoring of the temperature field of the grate bed in the existing domestic pellet production line is mostly manual operation. In actual production, it is exposed that the temperature control of the grate bed is unstable, which not only seriously affects the quality of pellet production, but also seriously affects the quality of pellet production. Chain grate service life

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  • Grate-kiln pelletizing bed temperature field indirect monitoring method and device thereof

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Embodiment Construction

[0014] First, select the thermocouple temperature sensor 2 according to the temperature to be measured. Because the temperature does not exceed 1000°C, select the nickel-chromium-nickel-silicon thermocouple temperature sensor 2.

[0015] The second is the installation of the thermocouple temperature sensor 2. According to the working characteristics of the temperature field indirect measurement of the temperature field indirect monitoring and control device of the grate bed 1 of the pelletizing chain grate, it is to use the thermocouple temperature measuring sensor 2 to detect the drum of the pelletizing chain grate. The hot air temperature near the wind / suction air box is used to obtain the temperature field of the grate bed 1 of the pelletizing grate. For the blast drying section (GG) and the exhaust drying section (CG) on both sides of the 2.4 million tons of pellet grate, preheating 1 Section (YR1), preheating section 2 (YR2) has a total of 40 hot air blast / extraction air b...

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Abstract

The present invention discloses an indirect monitoring method and a monitoring device for grate plate temperature field in grate-rotary kiln-annular cooler palletizing production technique belonging to the technical field of metallurgical industry measuring control. The present invention utilizes a thermocouple temperature measuring sensor to indirectly detect temperature fields in four sections of the grate plate and adjusts ventilation volume of an air draft / extract box in sequence in real time to realize indirect control over grate plate temperature of the grate. The present invention is characterized in that indirect grate plate temperature field detection and control technology is adopted to make the device operate stably and reliably, thus overcoming grate plate temperature fluctuation and improving palletizing quality. Control arithmetic software programs are designed for signal collection, temperature field calculation and dead band and scrambling feed-forward PID to realize normal operation of palletizing grate at the optimal temperature and increase thermal fatigue life of key grate parts by 2 to 3 years. Human-machine interface design based on configuration software technology is characterized in visual image and simple operation.

Description

technical field [0001] The invention relates to an indirect detection and control device for the temperature field of the pellet grate bed in the grate-rotary kiln-circular cooler pellet production process, which belongs to the technical field of metallurgical industry measurement and control, and is mainly used for the pellet grate Grate bed temperature realizes continuous automatic indirect detection and control. Background technique [0002] There are three main methods of producing pellets in the world: grate machine-rotary kiln-ring cooler pelletizing method, belt roaster pelletizing method and shaft furnace pelletizing method. The pellets produced by the grate machine-rotary kiln process have strong adaptability to raw materials, and have the characteristics of large production scale, high pellet compressive strength, uniform quality, high grade, low energy consumption and production cost. When the pellet grate operates reciprocatingly in an environment from normal te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05D23/22
Inventor 朱圣才李伯全冯爱新张永康杨继昌司乃潮张西良任旭东吴强
Owner 江苏宏大特种钢机械厂有限公司
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