关键词 白钠镁 矾 硫酸铵 盐析法 相图 Study on the Phase Diagram of NazSO4一MgSO4一(Nlj 【4)2So4一H2O System and Their Application GONG Xuemin · ZHANG Jiayong2 CAO Jilin (1.Hebei Provinc~l Key Lab of Green Chemwal Technology and High Eff ici ent En erg y Saving, College ofChemical...
bymcaI~ofKCI—Na2SO?一H2Oquaternarysystemphasedi;弘 mparesproce~flowsandsimplifiedpro- ceSscalculationandputsforwardideal~hcme., Keywords:KzSO.production;phasediagrama~ym;proce~flow;process~alculation 在盐化工业中.由于氯化钾和芒硝的资源都比 较丰富,在这种情况下,利用芒硝(N0.?lOH20)和 氯化钾(KCI...
Na2SO4·10H2O的相变点仅有32.4qC,前者是克服正、负离子间的静电引力,故熔点,相变点比较高,而后 者除在相变点脱去全部或部分结晶水吸收热量外,还包括更复杂的过程。目前这方面的研究工作没有 突破性进展,但是如不考虑此类物质复杂的相变过程,理论上计算相变潜热值偏差比较大。为此,本文 ...
Solubility data for the Na2CO3 + Na2SO4 + H2O2 + H2O system at 293 K were determined by Schreinmaker's method. The results were used to construct a phase diagram in the oblique projection according to the Jneck method. At constant temperature, when the hydrogen peroxide concentration is ...
10H2o的一些低共熔混合物的性能研究所谓低共熔混合物即共晶盐相变材料EPCM(EutecticPhasechangematerials),是指2种或2种以上物质组成的具有最低熔点的混合物.低共熔混合物具有与纯净物一样的明显的熔点,在可逆的固一液相变中始终保持相同的组分.相变储能材 23、料应用中,低共熔混合物是比较理想的相变材料.胡起柱...
(NH4)2SO4–H2O at 0°C [8], it showed that the new technology cannot be designed according to the phase diagram analysis of the above system at 0°C. In this work, the solubilities of the quaternary system Na2SO4–MgSO4–(NH4)2SO4–H2O were measured at 25°C and the new ...
On the basis of the analyses of the phase diagram of the quaternary system Na2SO4–MgSO4–CO(NH2)2–H2O at 60 °C and 25 °C, Na2SO4 and Mg–N compound fertilizers can be produced using CO(NH2)2 as salting-out agent directly. On the basis of the extended Pitzer model of ...
水盐体系相平衡钠盐固溶体The phase equilibria of the quaternary system of NaCl - NaBr - Na2SO4 - H2O at 348 K are investigated, and the solubility and density of the solution are determined by isothermal e-quilibrium method. The experimental results indicate that the quaternary system is the...
The experimental observations are discussed on the basis of the NaNO3–Na2SO4–H2O phase diagram and the results provide evidence for crystal growth from highly supersaturated solutions in both systems. If the crystals growing under these conditions are confined, these supersaturations result in ...