Guangzhou Special Pressure Equipment Inspection Institute

Guangzhou, China

Guangzhou Special Pressure Equipment Inspection Institute

Guangzhou, China
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Yang L.,Guangzhou Special Pressure Equipment Inspection Institute | Zhao J.,Guangzhou Special Pressure Equipment Inspection Institute | Yuan B.,Guangdong University of Technology | Du Y.,Guangzhou Special Pressure Equipment Inspection Institute | Huang J.,Guangdong University of Technology
Lizi Jiaohuan Yu Xifu/Ion Exchange and Adsorption | Year: 2013

The composite ion-exchange regenerant FH-30 was prepared based on the own patent technology. The effects of FH-30 on softened water quality and running cycle were studied under simulation conditions of industrial boiler softened water preparation process. The dynamic simulation experimental results showed that the running cycle with the flow speed of 35cm/min at room temperature would not change when the dosage of regenerant was changed, the content of sodium ion and ammonium ion would decrease with the increase of the running time in the softened water preparation process, the molar ratio of sodium and ammonium was not almost changed in the softened water preparation process when the regenerant dosage was 2.1 gram per milliliter resin, composite regenerant can completely replace single sodium salt regenerant. It was proved that the accumulation of sodium ion and ammonium ion could not be detected in the resin layer of both the regeneration resin and the exhausted resin.


Yang L.,Guangzhou Special Pressure Equipment Inspection Institute | Zhao J.M.,Guangzhou Special Pressure Equipment Inspection Institute | Yuan B.,Guangdong University of Technology | Huang J.Y.,Guangdong University of Technology
Advanced Materials Research | Year: 2014

The composite ion-exchange regenerant FH-30 was made using the own patent technology. The effect of softened water quality and running cycle, after the use of FH-30, was studied under simulation of industrial boiler softened water preparation process conditions. The dynamic simulation experimental results showed that at room temperature, the flow speed of 35 cm/min, the running cycle would not change when the dosage of regenerant was changed, the sodium and ammonium ion content would decrease with the increase of the running time in the softened water preparation process, the sodium ion content would decrease a bit faster at the later running cycle when the dosage of regenerant was greater, the molar ratio of sodium and ammonium almost not changed in the softened water preparation process when the regenerant dosage was 2.1 gram per milliliter resin, composite regenerant can completely replace single sodium salt regenerant. Through the measurement of sodium and ammonium ion in the regeneration resin and failure resin, proved that sodium and ammonium ion were not accumulated in the resin layer. © (2014) Trans Tech Publications, Switzerland.


Wang Z.,Hubei Engineering University | Li M.,Guangzhou Special Pressure Equipment Inspection Institute | Ni J.,Guangzhou Special Pressure Equipment Inspection Institute | Li H.,Guangzhou Special Pressure Equipment Inspection Institute
Jinshu Rechuli/Heat Treatment of Metals | Year: 2015

Microstructure and morphology of precipitated phase of TP304H austenitic stainless steel aged at 650 ℃, 700 ℃ and 750 ℃ for 30 d, 60 d and 150 d respectively were investigated by metallographic microscope, SEM and energy spectrum analysis. The results show that at the same temperature, with the prolongation of aging time, the grain size grow, the number of twin crystal decreases, a large amount of carbides and a few σ phase precipitate gradually, and the total amount of precipitates increases exponentially. In the same aging time, the size and the amount of precipitates increase with the rise of aging temperature. ©, 2015, Chinese Mechanical Engineering Society of Heat Treatment. All right reserved.

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