色谱法分析煤气总硫

铂丝还原滴定法在测量干法脱硫后硫化物含量时，测量数据偏离实际结果，容易造成触媒中毒。提出了用气相色谱火焰光度检测器测定的方法，使数据更可靠、准确。     

燃烧固硫反应的动力学和热力学及其影响固硫产物分解因素的研究

煤在高温条件下燃烧不利于固硫反应，并从热力学角度出发，得出了煤燃烧中钙基固硫剂反应自由能与温度的关系函数，由化学反应动力学得出院 硫酸钙分解反应的动力学方程及其相关参数，在还原性气氛中，从理论和实验上都证明了硫酸钙在较低温下会发生二次分解，理论分解温度与实际分解温度非常吻合，煤灰中氧化钙和三氧化二铝的存在，可以提高硫酸钙的分解温度同阳也给出了钙基固硫剂的应用条件。     

Simulation of Fe-Al compounds developed during single superphosphate manufacture

In order to analyse iron phosphate complexes and gel-like phases encountered in the single superphosphate process, experiments were performed with a free-Al, Fe apatite crystal of Durango from Mexico phosphate rock and sulfuric acid. Reaction products were studied by X-ray diffraction and surface analysis methods namely X-ray photoelectron spectroscopy and scanning electron microscopy. Results show that in a free Al, Fe-system, part of the Ca(H₂PO₄ )₂.H₂O (MCPM) forms before precipitation of any CaSO₄(CS) and gel-like phase such H₂SO₄.yH₃PO₄.xH₂O is formed. When iron is added, the precipitation rate of (CS) and (MCPM) increases and Fe₃(H₃O)H₈(PO₄)₆.6H₂O is formed. When Fe and Al are added, a gel-like phase is quickly formed with a molar ratio that changes with time and develops into crystalline compounds. The composition of this gel may be represented as a mixture of two phases: H₂SO₄.yH₃PO₄.xH₂O and a gel containing Al-Fe-Si.     

Co－Mo／MgO－Al_2O_3一氧化碳耐硫变换催化剂失活原因的探讨

采用程序升温硫化（ＴＰＳ）技术，微反—色谱法（ＭＲＣ）、扫描电镜、透射电镜和其它分析测试手段，对工业应用前后的Ｃｏ－Ｍｏ系耐硫变换催化剂Ｋ８－１１进行了分析，从而对其失活原因进行了分析和讨论     

Response of rainfed bread and durum wheat to source,level and timing of nitrogen fertilizer on two Ethiopian Vertisols: II. N uptake,recovery and efficiency

In trials conducted at 2 highland Vertisol sites in Ethiopia in 1990 and 1991, 2 locally popular wheat cultivars, 1 spring bread wheat (Triticum aestivum L.) and 1 durum wheat (T. durum Desf.), were supplied with nitrogen (N) fertilizer at 0, 60 and 120 kg N ha^–1 in the form of large granular urea (LGU), standard urea prills or ammonium sulfate. N was applied all at sowing, all at mid-tillering or split-applied between these two stages (1/3:2/3). While durum wheat exhibited the highest N concentration in grain and straw, bread wheat, because of its higher productivity, resulted in a greater grain and total N uptake. In general, split application of N and use of LGU as N source enhanced grain and total N uptake, apparent N recovery and agronomic efficiency of N, particularly under severe water-logging stress. Where significant, the interactions among the experimental factors substantiated the superior responsiveness of the bread wheat cultivar to fertilizer N, and the beneficial effects of split N application and LGU as an N source. Split application of N tended to nullify the positive effects of LGU, presumably by approximating the delayed release of N achieved with LGU. Considering the potential benefits to Ethiopian peasant farmers and consumers, split application of N should be advocated, particularly on water-logged Vertisols; LGU could be an advantageous N source assuming a cost comparable to the conventional N source urea.     

磷复肥喷浆造粒“三内”技术研究与开发(一)

介绍磷复肥喷浆造粒“三内”技术 ,该技术集喷浆造粒、分级、返料、破碎为一体在转筒内完成全过程 ,实现机头喷浆机尾出产品 ,粉体在筒内闭式循环造粒新技术     

硫黄硫化聚氨酯橡胶的性能研究

研究了不饱和聚醚型聚氨酯橡胶（PUR）的硫黄硫化体系，以及硫化剂硫黄和促进剂DM对胶料硫化特性、硫化胶的物理机械性能和耐热空气老化性能的影响。结果表明，硫黄对PUR性能影响明显，焦烧时间长，正硫化时间短，胶料有很好的操作安全性；硫化胶物理机械性能高，拉伸强度达到30MPa，耐热空气老化性能优异，100℃×72h后其拉仲强度保持率高达90％，硫黄用量以2～2．5份为佳；促进剂DM对PUR性能影响显著，有效提高其硫化反应速度，缩短正硫化时间，其用量以2～3份为宜。     

Influence of Carbon on SOx Emissions from Glass Processing

Carbon reacts with Na₂SO₄ in glass batches, influencing SO _x emissions. To study the role of carbon active surface area (ASA) in the decomposition phenomena, Na₂SO₄ is reacted with three carbons with a wide ASA range. The decomposition behavior was evaluated by thermogravimetric analysis (TGA) and evolved gas analysis via mass spectrometry and Fourier transform infrared spectrometry. Higher carbon ASA yields lower decomposition temperatures. SO _x emissions are realized at temperatures as low as 773 K. Isothermal Na₂SO₄–C decomposition initiates via the nucleation of Na₂S. The rate constants for the nucleation regime are normalized against ASA, yielding an activation energy of 275 kJ/mol for nucleation.     

流动注射分析法对复合肥中五氧化二磷的分析

在复合肥的生产过程中，用流动注射分析测定磷矿，磷石膏，磷酸中的五氧化二磷，该方法制样简单，分析速度快，结果准确。     

三氧化硫磺化甲苯反应的工艺条件研究

采用稀释SO3磺化甲苯工艺，研究了磺化温度．SO3配气比，原料中水含量和二甲苯砜抑制剂等工艺因素对反应转化率，产物中甲苯磺酸异构体含量及副产物二甲苯砜含量的影响。在10℃．SO3浓度为6％（volume）的操作条件下，二甲苯砜为抑制剂，甲苯转化率达到35％（mass）．反应产物中没有新增二甲苯砜，对甲苯磺酸含量达到88．24％．间甲苯磺酸含量降低到0．97％。