Online Neutron Activation Coal Analyzer Dandong Dongfang Measurement & Control Technology Co.,Ltd

公司简介 Company Profile Product Overview Established in 1996, Dandong Dongfang Measurement & Control Co., Ltd. features the largest DF-5703 (A) online neutron activation coal analyzer (Fig. 1-1) is one kind of cross-belt type coal company specialized in mine automation in China with the highest market share. In addition, it is material online detection equipment, with momentous significance in coal mining, coal washing, also the biggest inline industrial detection instrument manufacturer in Asia and one leading coal blending, blending of coal putting into the furnace, production process control,...

with ray inhibitor and thermostat elements. The ray inhibitor inhibits interference rays and the Product Structure thermostat elements keep the detector temperature constant. DF- 5703 (A) online neutron activation coal analyzer consists of five parts, i. e. measuring unit, neutron source, detector, signal processing cabinet and main unit (as shown in Fig. 2-1). 4. Signal processing cabinet The signal processing cabinet houses peripheral devices of detectors, electronic signal processing components and temperature control components. The peripheral devices of detectors supply HV and LV power sources...

Working Principle Technical Parameters DF- 5703(A) adopts prompt gamma neutron activation analysis (PGNAA) technology. The neutron source emits rapid neutrons with average energy at 2.35Mev, which are then degraded into Table 4-1 Technical parameters of DF-5703 (A) thermal neutrons by the measuring unit. The thermal neutrons radiate materials, so that the thermal neutron capture reaction can be made among the nucleuses of various elements in the energy in characteristic gamma ray, the element categories in the material can be distinguished, and by testing the intensity of gamma ray with specific...

Product Application DF- 5703(A) can be used jointly with the automatic batching software to carry out the optimized In coal analysis field, DF- 5703 (A) is mainly used in online quality detection in coal mining, coal control during the coal blending course. Weighing instrument and analyzer can send current washing, coal blending, blending of coal putting into the furnace as well as production process detection results into the batching software, and the latter then controls the feeding amount of control. Based on the real- time coal detection information presented by the analyzer, it realizes...

Power Plants Advantages of coal blending At present, the quality of fuel coal varies significantly in thermal power plants in China. These ● Rationally utilize various coal resources; power plants purchase different types of coals with different quality. In thermal power plants, samples need be manually taken, prepared and analyzed. The coal analysis lags behind the requirements. This has seriously influenced safe operation of the boilers. The analysis result which is obtained after coal burning is meaningless to safe operation and optimization of boilers. How to avoid boiler fire extinction...

Application of Coal Analyzer in Industrial Sites Appendix Radiation Protection 1. Fundamental Knowledge Radioactivity is the most common, most basic and most active natural phenomenon in the universe. The main source of motion and energy in the universe is radioactivity. Any active star in the universe is produced because of nuclear explosion. If there is not radioactivity, the universe will become dark. Radioactivity always exists throughout the earth where human beings live. The radioactive background in the earth mainly originates from the following: (1) Planets in the universe. For example,...

concentrated inside measuring tunnel of DF-5703 and no ray leak around the analyzer. 3. Radiation Protection Methods The theoretical calculation and actual measurement show that the dose equivalent rate around DF- Called as “Three Radiation Protection Principles” 5703 is below 2.5μSv/h. DF- 5703 runs fully automatically. Assuming that an operator stays around DF-5703 for one hour per day and works for 360 days annually, he or she will receive dose equivalent of 0.9mSv annually. This value is lower than the annual effective dose limit of 1mSv By using the characteristics that rays can be absorbed...

Dandong Dongfang Measurement & Control Technology Co.,Ltd. Address: No. 136, Binjiang M. Road, Yanjiang Development Zone, Dandong, Liaoning, China E-mail: [email protected] Website: www.dfmc.ee