On-line measurement of pulverized coal fineness on a 300 MWe power plant with pulsed digital inline holography

2021 ◽  
Author(s):  
Qiwen Jin ◽  
Xijiong Chen ◽  
Pei Li ◽  
Yonggang Zhou ◽  
Yingchun Wu ◽  
...  
Keyword(s):  
Power Plant ◽  
Pulverized Coal ◽  
Line Measurement ◽  
On Line

scholarly journals On-line measurement of pneumatic conveying of pulverized coal in pipes

2009 ◽  
Vol 147 ◽  
pp. 012076
Author(s):  
Jia Zhi-hai ◽  
Fan Xue-liang ◽  
Li Jun-feng ◽  
Cai Xiao-shu ◽  
Liu Ji-ze ◽  
...  
Keyword(s):  
Pulverized Coal ◽  
Pneumatic Conveying ◽  
Line Measurement ◽  
On Line

Study on Techniques for Online Measurement to Air and Pulverized Coal Mixture Flow Parameters of Coal-Fired Boiler in Power Plant

2005 ◽  
Author(s):  
Wei-Guo Pan ◽  
Yu Wang ◽  
Jiangmin Cao ◽  
Yunlong Zhou
Keyword(s):  
Power Plant ◽  
Flow Characteristics ◽  
Pulverized Coal ◽  
Point Location ◽  
Mixture Flow ◽  
Measuring Point ◽  
Flow Parameters ◽  
Coal Mixture ◽  
On Line ◽  
Precision System

Through analyzing the air and pulverized coal mixture flow characteristics of coal-fired boiler in power plant, it is put forward that measuring pulverized coal flow parameters is based on energy conservation theory and arrangement rule of measuring point location is for improving measurement precision. System for measuring temperature and velocity and concentration of air and pulverized coal mixture flow is developed, and some functions of on-line measuring air-pulverized coal mixture parameters are achieved. Adopting those efficient measuring methods are able to improve boiler operation’s safety and efficiency.

Ultrasound on-line measurement of pulverized coal flow in coal-fired boilers

2018 ◽  
Vol 60 (3) ◽  
pp. 289-292 ◽  
Author(s):  
Huai-shu Hou ◽  
Chao-lei Chen ◽  
Bing-bing Zhu ◽  
Zhen-rong Yan
Keyword(s):  
Pulverized Coal ◽  
Line Measurement ◽  
On Line ◽  
Coal Flow

Thickness Measurement in the AEM by Macintosh-Based Analysis of Two-Beam Convergent Beam Patterns

1990 ◽  
Vol 48 (2) ◽  
pp. 504-505
Author(s):  
John F. Mansfield ◽  
Douglas C. Crawford
Keyword(s):  
Electron Microscope ◽  
Video Camera ◽  
Thickness Measurement ◽  
Specimen Thickness ◽  
Crystalline Materials ◽  
Beam Dynamic ◽  
Line Measurement ◽  
On Line ◽  
Image Position ◽  
Convergent Beam

A method has been developed that allows on-line measurement of the thickness of crystalline materials in the analytical electron microscope. Two-beam convergent beam electron diffraction (CBED) patterns are digitized from a JEOL 2000FX electron microscope into an Apple Macintosh II microcomputer via a Gatan #673 CCD Video Camera and an Imaging Systems Technology Video 1000 frame-capture board. It is necessary to know the lattice parameters of the sample since measurements are made of the spacing of the diffraction discs in order to calibrate the pattern. The sample thickness is calculated from measurements of the spacings of the fringes that are seen in the diffraction discs. This technique was pioneered by Kelly et al, who used the two-beam dynamic theory of MacGillavry relate the deviation parameter (Si) of the ith fringe from the exact Bragg condition to the specimen thickness (t) with the equation:Where ξg, is the extinction distance for that reflection and ni is an integer.

Control Strategies for a Highly Loaded Biological Ammonia Elimination Process

1993 ◽  
Vol 28 (11-12) ◽  
pp. 531-538 ◽  
Author(s):  
B. Teichgräber
Keyword(s):  
Closed Loop ◽  
Control Strategies ◽  
Level Control ◽  
Sludge Dewatering ◽  
Loop Control ◽  
Reject Water ◽  
Line Measurement ◽  
Control Pattern ◽  
On Line ◽  
Treatment Facilities

A nitrification/denitrification process was applied to reject water treatment from sludge dewatering at Bottrop central sludge treatment facilities of the Emschergenossenschaft. On-line monitoring of influent and effluent turbidity, closed loop control of DO and pH, and on-line monitoring of nitrogen compounds were combined to a three level control pattern. Though on-line measurement of substrate and product showed substantial response time it could be used to operate nitrification/denitrification within process boundaries.

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