Chun Yu Wang

Control Technology of PM2.5 in Coal-Fired Power Plant and Experiment on Dedusting Performance of Typical Filters to PM2.5

People pay more and more attention on the fine particle pollution in the air with the improvement of environmental awareness. Coal-fired power plant is an important source of the fine particle emissions. The principles of three dedusting methods applied in coal-fired power plants were explained, which were electrostatic precipitator, bag deduster and composite electrostatic-bag precipitator. In addition, PM2.5 removal efficiency of three dedusting methods was analyzed and discussed based on the test results. The experiment, with the AFC-131test rig, was carried out on dedusting performance of typical filters, to study the effect of pressure drop of filters on the emission characteristics of PPS filter material of different processing technology and posttreatment.

Influence of Boiler Combustion Adjustment on NOx Emission and Boiler Efficiency

A tangentially fired boiler with twin furnace is tested to analyze the effect of such factors as primary air velocity,air distribution mode, over fired air,oxygen content on NOx and boiler efficiency during boiler combustion adjustment,providing reference for boiler operation optimization and reducing NOx emissions.

The Energy-Saving Retrofit of Axial Fan Based on Performances Test in a 300MW Unit

In a power plant of 300MW, the power consumption of its axial Induced Draft Fan (IDF) and Flue Gas Desulfurization (FGD) booster fan was high on the whole. So it is necessary to take measures to reduce the power consumption by energy-saving retrofit. Firstly, a series of test and optimization are carried out on its operational performances. Furthermore, several retrofit schemes are worked out. Then, based on a series of test about its operational characters, an evaluation on potential to save energy is carried out for the IDF and the FGD booster fan. Finally, according to the comprehensive analysis including technical economic, difficulty and reliability, it is of the best scheme to carry out the frequency conversion retrofit for IDF. In fact, its effect is good after the retrofit is conducted, namely, the energy-saving index is almost the same as from evaluation. Obviously, the evaluation as for performance test is quite accurate and can avoid several problems likely to occur in frequency conversion retrofit.

Cold Experimental Study on Furnace Slag of Opposite Firing Boiler Using Swirling Combustion

This paper analyzes the problem of furnace slag on opposite firing boiler using swirling combustion. Through the cold test methods, the airflow structure of the burner is explored, the formation mechanism of furnace slag is explicated, therefore the solution is drawn up, the slag problem of boiler is eliminated, the safety of unit operation is improved.

Problem and Solution of Frequency Conversion Transformation on Axial FGD Booster Fan in 600MW Unit

in 600 MW unit of a certain power company, the frequency conversion transformation on an axial FGD booster fan had been done, but it was found that have only little energy-saving effect and the investment recovery period would be very long. Based on performance characteristics test, the reason of this problem was analyzed. It shows that the transformation scheme in effect is unsuitable. The optimized scheme was proposed and suggesting good effect through energy-saving estimate. The company implemented optimization and then found the energy-saving index is almost the same as estimate. This problem is representative for frequency conversion transformation of fans, it can be avoided through performance characteristics test and energy-saving estimate before transformation.

Analysis and Modification on Blockage Problem of BBD Double Inlet and Outlet Tube Mill Separator

This article analysis the relationship between BBD inlet and outlet tube mill separator blockage and the boilers safety-economy, finds out the cause of the separator blockage, puts forward the corresponding reform scheme, then the retrofit scheme after implementing separator blockage problem.

Preliminary Study on the Effect of Operating Conditions on the Measurement Accuracy of Electronic Type Electric Energy Meter

The verification of electronic type electric energy meter is under strict reference conditions, but some special operating conditions at locale will exceed the standard scopes. In order to improve the calculation accuracy and operating reliability of electric energy meter under operating conditions, it is necessary to study the operating conditions. According to the working principle and the standard verification regulation of electronic type electric energy meter, this paper summarizes these operating conditions: low power factor, harmonic waves, dynamic impulsive load, voltage fluctuation and outside magnetic field of power frequency, then analyzes the causes of operating conditions and their influence on electronic type electric energy meter, eventually lays foundation for thorough and systematic study of electric energy meter in the operating conditions, and establishes measurement center database of operating conditions.

Numerical Simulation of Swirling Burner in Cold State

The computer numerical simulation of swirling burner in cold state was taken in this paper. The swirling intensity and the expansion cone angle of the secondary air were the main simulation content. The outlet flow field and form of the combustor were got through the simulation, and the comparison of the airflow diffusion angle and the return flow zone were analyzed, and then the guidance suggestions on the design modification and operation adjustment of the existing swirl burner were proposed.