An online measurement and control device for coal slime moisture content used in circulating fluidized bed boilers
A circulating fluidized bed, measurement and control device technology, applied in the direction of measuring devices, fuel oil testing, instruments, etc., can solve the problems of unscientific water content estimation, inaccurate water content, low utilization rate of coal slime, etc., to achieve convenient testing and control Accurate, utilization-enhancing effects
Active Publication Date: 2019-02-15
贵州新能源开发投资股份有限公司
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Problems solved by technology
[0002] When coal gangue and coal slime are used for combustion in the combustion furnace at the same time, the coal slime needs to be stirred into a paste by adding water, and then transported to the combustion furnace by the paste pump for combustion. The water content in the coal slime will affect the paste pump. The transportation of coal and the combustion of coal slime. The water content in the existing coal slime is determined by manual observation. The estimation of the added water content is unscientific, resulting in inaccurate water content, which is not conducive to transportation and combustion. Coal Low utilization rate of mud
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[0015] Example: such as Figure 1-Figure 2 As shown, an on-line measurement and control device for coal slime moisture content used in circulating fluidized bed boilers, including a probe-type moisture content sensor 1, the moisture content sensor 1 is installed on the top of the mixing chamber 3 close to the inner wall through the upper and lower driving mechanism 2, Its probe 4 faces downward, and the up and down drive mechanism 2 drives the moisture content sensor 1 to move up and down and the probe 4 can extend into the mixing bin 3 coal slimes.
[0016] Preferably, the above-mentioned water content sensor 1 is connected to a controller, and the controller is connected to a man-machine interface, through which the water content can be monitored intuitively.
[0017] Preferably, the above-mentioned water content sensor 1 adopts four, and is evenly distributed along the circumferential direction of the top of the mixing chamber 3. Four water content sensors are set, and the ...
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The invention discloses an online measurement and control device for coal slime water content used in a circulating fluidized bed boiler, which includes a probe type water content sensor, and the probe type water content sensor is installed on the top of the mixing chamber close to the inner side wall through an up and down driving mechanism , with the probe facing down, the up and down driving mechanism drives the probe type water content sensor to move up and down and the probe can extend into the coal slime in the mixing bin. The present invention measures the water content in the coal slime through a probe-type water content sensor, and the water content test is accurate, so as to determine whether or not to add water and the amount of water to be added according to the measured water content, so as to ensure that the water content in the coal slime is optimal. It is greatly beneficial to the transportation of the coal slime in the pipeline and the combustion in the combustion furnace, and greatly improves the utilization rate of the coal slime. The invention also has the characteristics of simple structure, convenient testing and precise control.
Description
technical field [0001] The invention relates to an online measurement and control device for coal slime water content used in circulating fluidized bed boilers, and belongs to the technical field of coal gangue and coal slime power generation equipment. Background technique [0002] When coal gangue and coal slime are used for combustion in the combustion furnace at the same time, the coal slime needs to be stirred into a paste by adding water, and then transported to the combustion furnace by the paste pump for combustion. The water content in the coal slime will affect the paste pump. The transportation of coal and the combustion of coal slime. The water content in the existing coal slime is determined by manual observation. The estimation of the added water content is unscientific, resulting in inaccurate water content, which is not conducive to transportation and combustion. Coal Mud utilization rate is low. Contents of the invention [0003] The technical problem to ...
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IPC IPC(8): G01N33/22
CPCG01N33/222
Inventor 罗宁刘际均吴冬梅
Owner 贵州新能源开发投资股份有限公司