Showing papers in "Science & Technology in Chemical Industry in 2012"

The research of specific heat capacity,thermal conductivity and viscosity-temperature physical property parameters changes for heavy oil

Abstract: In this article,the viscothermo properties experimental studies for different blocks of heavy oil were carried out using Anton Paar MCR301 Rotational Rheometer,also the specific heat capacity and thermal conductivity of rock,water and different regions of heavy oil were determined by HA-Ⅱspecific heat measuring devices and HA-Ⅱthermal conductivity measurement apparatus in the range of 20~300 ℃.The results of the study indicated that the viscosity of heavy oil is very sensitive to temperature and is significantly reduced with temperature rises.And the values of specific heat capacity of heavy oil change in the range from 1.684 to 4.493 9 J/(g·K) at temperature ranging from 20 to 300 ℃,the range of which varies greatly.Meanwhile,all the thermal conductivity of heavy oil has decreased with increasing temperature and is extremely close in value,the range of which change quite small with its range varying from 0.119 6 to 0.165 W/(m·K) at temperature ranging from 20 to 300 ℃.

A novel synthesis of furil

Abstract: Preparation of furoin using furfural as raw materials and VB1 as catalysis has been studied in alkaline conditions,pH of 8 to 9.Furoin was oxidized to furil by CuSO4-C5H5N as an oxidant.The effect of reaction temperature,reaction time,the amount of VB1 and oxidant.on the yield of the product was observed.Optimum conditions of synthesizing technology of furoin were determined,reaction temperature was 65 ℃,the mixture was refluxed for 2 hours,the amount of VB1 was 8.0 g.The yield of the product reached 82.7%.Optimum conditions of synthesizing technology of furil were determined,reaction temperature was 100 ℃,the mixture was refluxed for 2.5 hours,n(CuSO4):n(C5H5N)∶n(H2O) = 1∶4.3∶9.0.The yield of the product reached 91.7%.The product of furoin is white needle-like crystals,the melting point of 138~139 ℃.The product of furil is yellow needle-like crystals,the melting point of 165~166 ℃.Structure of objective products was characterized by IR and elementary analysis.

BPO_4 Powders prepared by solvent azeotropic dewatering

Abstract: BPO4 Powders were prepared by an approach of solvent azeotropic dewatering under diffierent reaction time,using H3BO3 and 85% H3PO4 as starting materials,cyclohexane as water-carrying agentThe powder was charactered by XRD and FT-IR,the results showed that products contained small amount of unreacted H3BO3The products were heated in the oven at 120 ℃ and 140 ℃ in different time,and tested by XRD and FT-IRThe results showed the pure BPO4 powders can be synthetized when boil-together 2 h with heat treatment 6 h at 120 ℃ or with heat treatment 4 h at 140 ℃ and boil-together 5 h with treatment 4 h at 120 ℃ or with heat treatment 2 h at 140 ℃

The research development and future application of functionally gradient materials

Abstract: Functional gradient material(FGM)is a new kind of nonhomogeneous composite.According to the design concept of FGM,its chemical composition,microstructure and atomic order vary gradently and continuously from one side to another,therefore its propery and funtion vary gradully along the line of thickness.The concept and preparation of functionally gradient material are introduced The research development on FGM is disscussed and the propspects of FGM are presented.

Surface treatment of ultra high molecular weight polyethylene fiber

Abstract: UHMWPE fiber has excellent performances,however its surface own characteristics limit application in some field,so its surface is treated to improve the binding force with resin interface.This paper describes several methods for UHMWPE fiber surface treatment,such as plasma processing method.

Production and market analysis of methyl isobutyl ketone at home

Abstract: This paper introduced application/supply/demand and price of methyl isobutyl ketone(MIBK) at home,and made forecast on its market prospect.It also gave some recommendations for MIBK future development.Development of MIBK will be rapid in the days to come.The capacity of MIBK in 2015 is predicted to be 140 kt.

Development and utilization status on the phosphogypsum

Abstract: With the rapid development of phosphate fertilizer industry,its by-product—phosphogypsum has become the difficult problem of the environment protection on the development of phosphate fertilizer.This article describes the origin of the phosphogypsum and its characteristics,and introduces the present situation and the existent advantages and disadvantages of phosphogypsum from a wider range fields of applying phosphogypsum and the hot fields of developing,utilizing and studying phosphorous.