氨氧化制硝酸实验探究

探索氨氧化制硝酸的最佳实验条件．从催化剂的种类、氨水的浓度、氧气浓度的选择进行对比实验．实验结果表明：以三氧化二铬、铜丝为催化剂，氨水配比1．5：1和1：1，通入空气时实验效果最佳．     

铁炭微电解法在单晶硅生产废水处理中的应用

介绍了某单晶硅生产改扩建各工序产生废水的水量、水质，并对原废水处理站存在的问题进行分析。在原废水处理站的基础上，采用生铁屑和焦炭组成微电解氧化还原塔作为单晶硅生产废水处理的预处理，取得较好的效果．     

用炉灰脱色剂对还原蓝分散红印染废水的脱色处理研究

以炉灰脱色剂对还原蓝分散红染料的印染废水进行脱色处理研究，结果表明，在常温常压下，炉灰脱色剂在5min左右可使印染废水(pH=4～14)中的红色脱除率达98．673％，蓝色脱除率达91．598％，使废水由深蓝色变为无色，废水CODCr脱除率达56．210％．本脱色剂不仅价廉易得，处理设备简单，操作方便，以废治废，对印染废水无需进行pH值的调整，而且炉灰经焙烧再生后可多次重复利用，减少二次污染．     

双工质联合循环透平机可行性研究

从节能、环保、保护自然资源、提高热能利用率的观点出发,吸纳了"双机联合循环热力机组"的高效节能的成功经验,将"双机"简化成"双工质"联合循环的透平机,将燃料的"多个梯阶"能量直接或间接地加以回收和利用,提高了热能的利用率。     

Polychlorinated dibenzo-p-dioxins and dibenzofurans in flue gas emissions from municipal solid waste incinerators in China

Polychlorinated dibenzo-p-dioxins and furans （PCDD/Fs） emissions in flue gas from two types of municipal solid waste incinerators （MSWIs） most commonly used in China were investigated in this study. The selected incinerators include two grate-type MSWIs： MSWI-A （350 t/d） and MSWI-B 050 t/d）, and two fluidized bed MSWIs： MSWI-C （400 t/d） and MSWI-D （400 t/d）, which are all equipped with semi-dry lime scrubber and bag filter except MSWI-D equipped with cyclone and wet scrubber （WS） as air pollutant control device （APCD）. Results indicated that the emission concentration and the international toxic equivalents （I-TEQs） of the PCDD/Fs from the stacks were in the range of 1.210-10.273 ng/Nm^3 and 0.019-0.201 ng I-TEQ/Nm^3, respectively. They were greatly lower than the emission regulation standard of PCDD/Fs in China （1.0 ng I-TEQ/Nm^3）. However, only the PCDD/Fs emission level from MSWI-C was below 0.1 ng I-TEQ/Nm^3. Although the homologue profiles were distinct, the contributions of the 2,3,7,8-subsituted congeners to the total I-TEQ were similar among all the investigated MSWIs. Two major 2,3,7,8-substituted congeners, 2,3,4,7,8-PeCDF and 1,2,3,7,8-PeCDD, account for 47% and 9% （average values） of the total I-TEQ values, respectively. The correlation between PCDD/Fs levels and composition of flue gas was also discussed.     

微波辐射相转移催化合成对羟基苯甲酸杉酯的研究

以对羟基苯甲酸和氯化苄等为原料,以十六烷基溴化铵为相转移催化剂合成对羟基苯甲酸苄酯。通过实验考察了催化剂用量及物料配比等因素对酯化反应的影响。结果表明:微波辐射功率350W,辐射时间3min,n(对羟基苯甲酸)∶n(氯化苄)=1∶2,n(正十六烷基三甲基溴化铵)∶n(对羟基苯甲酸)=0.025,产率可达96.7%。     

Polychlorinated dibenzo-p-dioxins and dibenzofurans in flue gas emissions from municipal solid waste incinerators in China

Polychlorinated dibenzo-p-dioxins and furalls(PCDD/Fs)emissions in flue gas from two types of municipal solid waste incinerators(MSWIs)most commonly used in China were investigated in this study.The selected incinerators include two grate-type MSWIs:MSWl-A(350 t/d)and MSWI-B(150 t/d),and two fluidized bed MSWIs:MSWI-C(400 t/d) and MSWI-D (400 t/d),which are all equipped with semi-dry lime scrubber and bag filter except MSWI-D equipped with cyclone and wet scrubber(WS)as air pollutant conffol device(APCD).Results indicated that the emission concentration and the international toxic equivalents(I-TEQs)of the PCDD/Fs from the stacks were in the range of 1.210～10.273 ng/Nm3 and 0.019～0.201 ngI-TEQ/Nm3,respectively.They were greatly lower than the emission regulation standard of PCDD/FS in China(1.0 ng I-TEQ/Nm3).However,only the PCDD/Fs emission Ievel from MSWI-C Was below 0.1 ng I-TEQ/Nm3.Although the homologue profiles were distinct,the contributions of the 2,3,7,8-subsituted congenem to the total I-TEQ were similar among all the investigated MSWIs.Two major 2,3,7,8-substituted congeners,2,3,4,7,8-PeCDF and 1,2,3,7,8-PeCDD,account for 47% and 9%(average values)of the total I-TEQ values,respectively.The correlation between PCDD/Fs levels and composition of flue gas Was also discussed.     

ZnO半导体光催化处理含酚废水的研究

利用中压汞灯作光源，ＺｎＯ为催化剂，研究了辐射波长、ＺｎＯ－酚悬浮液组成和搅拌方式等因素对酚分解率的影响．ＺｎＯ半导体光催化分解酚的适宜条件为：辐射波长３６０～４２０ｎｍ，ＺｎＯ－酚悬浮液的含酚量＜２００ｍｇ／ｌ，ＺｎＯ浓度３～８ｇ／ｌ，ｐＨ＝５～７，反应温度２５℃～４０℃，空气搅拌．酚的分解机理可能涉及酚与光生空穴反应和酚与辐照过程中产生的·ＯＨ自由基反应两条途径     

Synthesis of polyketone by copolymerization of styrene and CO using carbon nanotube-complex Pd2+ catalyst

The dipping method was devised to deposit Pd onto carbon nanotube as supported catalyst(Pd/CNT) for the copolymerization of carbon monoxide(CO) and styrene(ST) towards the formation of polyketone(PK).The Pd/CNT was characterized by X-ray photoelectron spectroscopy(XPS),X-ray diffraction(XRD) and high-resolution transmission electron microscopy(HRTEM).The construction and crystallization property of PK were evaluated by Fourier transform infrared spectroscopy(FTIR),13C-nuclear magnetic resonance(NMR) and XRD,respectively.The catalyst showed excellent activity and reusability in promoting the fabrication of PK.It can be recycled 14 times with the highest total catalytic activity of 4 239.64 gPK/(gPd·h) at Pd content of 8.63wt%.The results indicate that the prepared catalyst is effective to catalyze the copolymerization of CO and styrene.     

锅炉余热回收水处理技术探讨

烟气-水换热器换热方式是锅炉烟气余热回收的主要方式,这其中必然要求水的软化处理。本文介绍了阻垢剂在锅炉及换热器水处理方面的阻垢原理,并以硅磷晶为例,介绍了阻垢剂在用于锅炉余热回收水处理方面的防腐阻垢过程的工作机理。