Boiler fly ash ignition carbon measuring device

Abstract

The invention discloses a boiler fly ash ignition carbon measuring device, which comprises a sample feeding component, an ignition component, a transmission component, a sample weighing component, a sample discharge component and a crucible supporting plate. Crucible holes are arranged on the crucible supporting plate; the center of the crucible supporting plate is fixed to the top end of a pull rod passing through a station platform; a synchronizing wheel is arranged on the pull rod disposed between the crucible supporting plate and the station platform; a transposition motor fixed under the station platform is connected with the synchronizing wheel via a synchronizing belt; a sample feeding station, an ignition station, a sample weighing station and a sample discharge station are sequentially arranged on the station platform; the sample feeding component, the ignition component and the sample discharge component are respectively positioned above the sample feeding station, the ignition station and the sample discharge station; and the sample weighing component is positioned below the sample weighing station. By installing an electric scale below the station platform, the carbon measuring device enables the length of a weighing rod to be shortened heavily, enables the anti-vibration capability of the weighing rod to be strengthened greatly, and then improves measurement accuracy. Additionally, the crucible supporting plate is a strip-shaped plate with two through holes capable of holding a crucible, has simple structure, small rotation inertia, and is favorable for controlling accuracy of rotation.

Description

technical field [0001] The invention relates to a device for measuring the carbon content of boiler fly ash, in particular to a carbon measuring device for burning boiler fly ash. Background technique [0002] The carbon content of boiler fly ash is one of the main indicators of combustion efficiency and operating economy of coal-fired boilers in thermal power plants. Grasp the carbon content data of boiler fly ash in time, which is helpful for boiler operators in thermal power plants to adjust boiler combustion and pulverization system in time, improve boiler combustion efficiency, reduce coal consumption for power generation, and increase the utilization value of fly ash. [0003] At present, the on-line carbon measurement methods of fly ash generally adopted at home and abroad include microwave method, infrared method and capacitance method. These measurement methods are all indirect measurement methods, and the measurement data are all obtained by comparing the calibrat...

AI Technical Summary

Problems solved by technology

Due to the change of coal type or the change of coal fineness, the physical properties of fly ash will inevitably change, so that the original calibration curve is no longer applicable

However, my country is rich in coal resources, and the sources of coal used in thermal power plants are complex. The existing fly ash online carbon measuring instrument cannot meet the reality of changing coal types in thermal power plants in my country. The data provided often mislead boiler operators to judge the adjustment of boiler combustion. Seriously affect boiler combustion economy

[0004] However, the existing laboratory off-line testing methods require manual sampling, manual weighing, high-temperature burning, and then manual weighing and calculation. Insufficient, therefore, can not guide the boiler combustion adjustment in time

The Chinese Invention Patent No. 200610126404.0 discloses an online detection device for carbon content in fly ash of coal-fired power plant boiler flue, which can perform online measurement, but still has the following defects: 1. The electronic balance is installed at the bottom of the measurement box In order to be able to weigh the weight of the crucible, the weighing rod must be very long, so that the center of gravity of the whole weighing rod is very high. Once the chassis shakes a little, the weighing rod will shake greatly, thus affecting the measurement accuracy

Such a structure is more complicated in the measurement process. If all four crucibles are added to the measurement process, the entire measurement process will take a long time from the collection of ash samples to the measurement results, resulting in a large lag in the measurement results.

3. The crucible is driven by a rotating motor to rotate the large gear plate and the crucible turntable, and two positioning sensors are required, the structure is complex and there are many faults

4. The ash sample needs a long burning time in the burning part

Images