JX-300 DCS在HCl生产中的应用

采用国产石墨二合一HCl合成炉生产盐酸及氯化氢气体，整套装置运用DCS控制，具有氯气，氢气压力及氯氢配比稳定和报警，联锁等功能。     

硫基复合肥生产中HCl吸收工艺的改进

介绍山东红日集团 2 0万吨 /年硫基 NPK复合肥生产中 ,连续转化的吸收生产工艺 ,对连续转化 HCl吸收系统因超温水量不足引起的 HCl收益率低、尾气中 HCl流量大的问题进行了改进。改造后 ,吨 KCl盐酸产量由0 .96吨提高到 1.11吨 ,尾气中 HCl流量由 0 .6 35 kg/ h降至 0 .3kg/ h,仅多产盐酸每年增加收入 2 2 5万元 ,并减少HCl气体排放量 2 .4 t     

Experimental and numerical study of applicability of porous combustors for HCl synthesis

Porous combustors have been studied intensively concerning the combustion of natural gas. The advantages of combustion in porous inert media, such as low emissions, high power turndown ratio of typically 10:1 and compactness, can also be used for different chemical gas phase reactions, e.g. the HCl synthesis from H₂ and Cl₂. The advantages of porous reactors result from the heat transport properties of the porous medium, i.e. emissivity and conductivity. Heat transport mechanisms and chemical reactions were implemented in a numerical code in order to investigate the H₂/Cl₂ system. Important parameters of the reaction, e.g. the laminar flame speed and the adiabatic flame temperature, are higher for the H₂/Cl₂ reaction compared to the CH₄/air combustion. By studying the influence of H₂O and HCl as inert components it was shown by numerical investigations that the maximum temperature could be decreased to a level, which makes the usage of a porous reactor feasible. A porous reactor for laboratory use was tested with O₂/CH₄/N₂ combustion, which delivers even higher adiabatic temperatures and flame speeds than the H₂/Cl₂ reaction. Finally, experiments with H₂/Cl₂/HCl reaction were carried out and first results are presented.     

膜分离技术在含HCl体系中的应用研究进展

综述了膜分离技术在含HCl溶液体系和含HCl气体体系中的应用,探讨了膜分离技术在多晶硅制备和有机硅制备中的应用前景。     

模糊算法在氯丁二烯合成生产中的应用

氯丁橡胶生产是以氯丁二烯单体经过乳液聚合生产胶乳,而氯丁二烯则是以乙炔法制备。乙炔二聚得到的乙烯基乙炔(MVA)与氯化氢(HCl)合成生成氯丁二烯(CD),国内其合成塔反应运行基于人工操作,劳动强度大且稳定性差。在自动控制方面,设计了三维模糊(Fuzzy)控制器,与传统的PID串级控制相结合,实现了合成反应塔的优化控制。     

The adsorption and corrosion inhibition of 8-hydroxy-7-quinolinecarboxaldehyde derivatives on C-steel surface in hydrochloric acid

The protection influence of 8-hydroxy-7-quinolinecarboxaldehyde derivatives against C-steel corrosion was studied in 2 mol· L-1 HCl solutions at 30 ℃.Measurements were conducted under various experimental conditions using weight loss,potentiodynamic polarization,electrochemical impedance spectroscopy (EIS) and electrochemical frequency modulation (EFM) techniques.These studies have shown that 8-hydroxy-7-quinolinecarboxaldehyde derivatives are very good "green",mixed-type inhibitors.Corrosion rates obtained from both EFM and EIS methods are comparable with those recorded using Tafel extrapolation method,confirming validation of corrosion rates measured by the latter.The inhibitive action of these 8-hydroxy-7-quinolinecarboxaldehyde derivatives was discussed in terms of blocking the electrode surface by adsorption of the molecules through the active centers contained in their structures following Langmuir adsorption isotherm.Quantum chemical method was also employed to explore the relationship between the inhibitor molecular properties and its protection efficiency.     

HCl离心式风机轴封改造

针对HC l风机不允许输送介质泄漏的实际问题,设计了防泄漏可靠、安装维修方便、造价低的迷宫密封+抽气密封+氮气密封的密封组合体,解决了化工生产中的安全隐患。     

聚氯乙烯生产中的氯化氢循环回收技术及应用

简述我国聚氯乙烯(PVC)生产高速发展形势及尚存问题,指出传统氯化氢回收技术的弊病所在,阐明以组合塔为核心设备的氯化氢循环回收技术及其优越性,介绍组合塔及其制作技术发展的各项措施,简要回顾以新技术替代传统技术从粗氯乙烯气体中回收氯化氢的10年改革进程、效果和在国内17个省的37套装置中的应用概况。     

Catalytic removal of NO in waste incineration processes over Rh/Al2O3 and Rh–Na/Al2O3: Effects of particulates,heavy metals,SO2 and HCl

Two novel catalysts Rh/Al₂O₃ and Rh–Na/Al₂O₃ were prepared for NO removal and tested their practical performances in a laboratory-scale waste incineration system. The effects of particulates, heavy metals, and acid gases on the catalysts were evaluated and investigated through several characterization techniques, such as SEM, EA, XRPD, ESCA, and FTIR. The results indicated that the NO conversions were increased with the accumulation of particulates on the surface of catalysts, which was attributed to the increase in carbon content. However, the increase in heavy metals Cd and Pb contents on the surface of catalysts decreased the activity of catalyst for NO removal but did not change the chemical state of Rh and Na. The Rh/Al₂O₃ catalysts were poisoned when the acid gases SO₂ and HCl were present in the flue gas, because Rh and Al reacted with S and Cl to form inactive products. Adding Na to Rh/Al₂O₃ catalysts produced a promoting effect for SO₂ removal due to the formation of Na₂SO₄. The influence levels of different pollutants on the performances of Rh/Al₂O₃ and Rh–Na/Al₂O₃ catalysts for NO removal followed the sequence of HCl > heavy metals > SO₂ > particles.