Mn—Fe／γ—Al2O3高温脱硫再生性能的研究

在７７３￣９８３Ｋ温度范围内，Ｍｎ－Ｆｅ／γ－Ａｌ２Ｏ３对Ｈ２Ｓ具有国好的脱除效果，本文对其再生性能进行了深入的研究。结果表明，此类脱硫剂具有较好的再生性能，且从脱硫剂再生之后的比表面积、孔结构的变化情况较好地解释了脱硫剂脱硫性能的变化情况。     

TGF脱硫剂连续再生的安全问题

ＴＧＦ脱硫剂连续再生的安全问题郭汉贤，苗茂谦，刘明清（太原工业大学煤化工研究所，太原０３００２４）常温氧化铁脱硫剂广泛用在煤气脱硫。为了强化脱硫过程，提高脱硫效率，延长脱硫剂寿命，人们希望在脱硫的同时，进行连续再生。所谓连续再生是指在氧化铁塔（箱）的...     

沼气脱硫试验研究

以厌氧消化所产生的沼气为研究对象,进行了沼气干式脱硫生产试验。结果表明,温度对沼气脱硫的影响很显著,当脱硫塔的温度为25~40℃时,控制好其他运行参数,脱硫效率一般都在90%以上,满足沼气风机和沼气锅炉的要求;脱硫剂连续再生时,其对O2的吸收率为50%~70%;脱硫剂的硫容可达到30%以上。     

PM型成型脱硫剂的研究

ＰＭ型成型脱硫剂富硫气体脱硫剂，本文通过实验室试验、中试及沼气生产的试用，证明该脱硫剂具有净化度高，硫容大，再生易等优点，并有较适中的强度。     

铜锰高温脱硫剂的物性及脱硫性能（Ⅱ）

研究了Ｃｕ－Ｍｎ脱硫剂的还原，脱硫及再生性能。该脱硫剂在实际应用中无需进行还原过程，且不仅显示较强的脱硫性能和较高的硫容量，而且在８０００℃的高温下仍能保持这些特性。     

微生物还原法制备脱硫催化剂吸附SO2的研究

在室温条件,采用大肠杆菌(Escherichia coli)与常规浸渍法制备的Cu O/γ-Al2O3相互作用制备了一种络合催化剂,并研究了催化剂在液相中的脱硫和再生性能。研究表明:该络合催化剂在Cu负载量为2%时,对SO2的饱和吸附量可达312.2 mg/g·cat,当SO2浓度为100mg/L,催化剂浓度1g/L时,其脱硫率能达到92.8%;吸附后的催化剂可通过加热再生,4次再生后其脱硫率为80.5%,是一种性能良好的脱硫剂。FTIR和XPS分析表明,在有氧和水条件下,菌粉表面的把Cu2+还原成Cu+,然后Cu+与菌粉中的羧基相互作用形成的络合物是吸附SO2的活性中心。     

成型脱硫剂的活性及再生性研究

本文对ＰＭ型脱硫剂应用于沼气及煤气脱硫过程的再生性进行了研究。结合ＸＲＤ、孔分布及ＴＥＭ、ＳＥＭ分析结果，说明了该产品在煤气脱硫过程中可实现连续再生，废脱硫剂可加嘏利用。     

SW型脱硫剂的研制及应用

本研究采用硫酸烧渣制备ＳＷ型脱硫剂并用以进行洳气，煤气脱硫。结果表明：以藜民的脱硫剂对沼气，煤气中Ｈ２Ｓ的脱除率可达９９％以上，吸附工作硫容率可达３０％同时探讨了影响脱硫率的因素和再生方法。     

新型高温煤气净化技术的试验研究

开发了高温煤气净化新工艺,进行了自行研制的脱硫剂在流化床气化条件下的气流床脱硫和流化床再生工艺、脱硫剂的硫化和再生过程动力学行为研究.通过移动颗粒床-表面过滤板复合除尘器和CANDLE陶瓷除尘器,在高温煤气净化前后,进行了高效除尘.进行了气体中碱金属和重金属含量分析.     

PM型成型脱硫剂的研究

PM型成型脱硫剂系上海市煤气公司研究所开发的新型富硫气体脱硫剂。本文通过实验室试验,中试及沼气生产的试用,证明该脱硫剂具有净化度高,硫容大,再生易等优点,并有较适中的强度。     

Batch Cr(VI) removal by polyacrylamide-grafted sawdust: Kinetics and thermodynamics

Batch sorption studies have been carried out to determine the effect of adsorbent dose, initial sorbate concentration and pH on the adsorption of Cr(VI) on polymer-grafted sawdust. The process was found to be pH, temperature and concentration dependent. An empirical relationship has been obtained to predict the percentage Cr(VI) removal at any time for known values of sorbent and initial sorbate concentration under observed test conditions. The effect of diverse ions has been studied and it is found that there is very little effect on the sorption of Cr(VI). The process was found to be exothermic with a maximum adsorption of 91.0% at 30°C for an initial concentration of 100 mg l⁻¹ at pH 3. The process follows first-order kinetics and the data fits the Freundlich adsorption isotherm. Thermodynamic parameters were also evaluated. Desorption studies confirmed that adsorbent can be effectively regenerated using 0.2 M NaOH and 0.5 M NaCl and can then be reused.     

Mercury(II) sorption by waste rubber

Studies were connected to assess the capability of waste tire rubber for removing inorganic mercury from solution. Samples of vulcanized tire rubber were ground to a suitable sorbent size and utilized in batch sorption studies. Research parameters included aqueous mercury concentration, rubber sorbent particle size, solution temperature, and hydrogen ion concentration. Alternate sulfur-free rubber materials were also evaluated in an attempt to identify the sorption mechanism. The studies showed tire rubber to be an efficient sorbent material for mercury removal from waste solutions. Of the parameters investigated, pH was determined to be most crucial, with an optimum pH range of 5.5 to 6.0 for good mercury removal. The diffusion of mercury through pores in the rubber sorbent was shown to be the rate limiting step regarding mercury uptake. Finally, sulfur-free rubber materials were shown to be equally efficient for inorganic mercury removal.     

高温煤气HCl脱除的研究

研究了四种高温煤气脱氯剂在固定床反应器中与HCl气体的反应 ,在 550℃温度下 ,所有被测试的脱氯剂都具有较好的脱氯性能 ,在反应开始的一段时间内都能使混合气体中的HCl从 1× 10 - 3降低到 1× 10 - 6 以下。在相同的反应条件下 ,CT1脱氯剂具有最高的穿透时间、穿透氯容量和饱和氯容量。在 30 0～ 70 0℃之间 ,温度越高 ,CT1脱氯剂吸收氯容量越高。同时研究了脱氯剂与高温煤气中HCl气体的反应动力学 ,得出在 550℃时其反应受通过产物层的扩散和化学反应所控制     

Cucurbituril for water treatment. Part I: Solubility of cucurbituril and sorption of reactive dyes

Cucurbituril was investigated regarding its potential as a sorbent for the removal of reactive dyes from model solutions and authentic wastewaters. The solubility of cucurbituril is low in pure water but increases in the presence of salts. When dyes sorbing onto cucurbituril are present, solubility is drastically decreased compared to dye-free media. Sorption efficiency depends on salt concentration and salt species. Moderate salt concentrations favor sorption, high concentrations lead to cucurbituril dissolution. Divalent ions have a stronger effect than monovalent ions and larger ions more than smaller ones. In tests with authentic wastewaters cucurbituril was partially (20-100%) dissolved and contaminant removal was inefficient. Because of its solubility, cucurbituril is not feasible as a sorbent in wastewater treatment unless it could be covalently fixed onto a suitable support material.     

Sorption kinetic analysis for the removal of cadmium ions from effluents using bone char

The adsorption of cadmium ions onto bone char has been studied using a batch adsorber. The experimental data was analyzed using four sorption kinetic models--the pseudo-first order, the Ritchie second order, the modified second order and the Elovich equations--to determine the best-fit equation for the sorption of metal ions onto bone char. The best-fit equation was identified using the sum of the errors squared (SSE). Finally, equilibrium studies were used to evaluate the sorption capacity of bone char for cadmium ions and experimental results showed this to be 0.57 mmol g-1 at an equilibrium solution concentration of 3.0 mmol dm-3. Since the sorption capacity is relatively high, bone char can be considered as a suitable sorbent for the adsorption of cadmium in wastewater treatment systems.     

低温甲醇洗净化煤气的探讨

本文从低温甲醇洗净原理入手，分析总结低温甲醇洗装置的生产操作特点，提出本装置最佳操作参数，并就优化工艺提出几点设想。     

The use of ferrocyanide Zn/Al-hydrotalcite for the sorptive concentration and radiometric determination of <Superscript>137</Superscript>Cs in waters

A sorbent based on Zn/Al-hydrotalcite intercalated by hexacyanoferrate (II)-ions is proposed for ¹³⁷Cs concentration and its further radiometric determination in natural waters. Parameters for the optimal sorptive extraction of radiocesium from waters under static conditions and direct radiometric measurements have been determined. The use of ferrocyanide sorbent is shown to provide a good potential in analytical schemes of ¹³⁷Cs concentration from waters with high salt background.     

局部染毒皮肤洗消的实验研究

介绍化学事故洗消的程序和方法,综述了洗消剂种类及选择原则。用苯和甲苯两种化学毒物直接沾染皮肤,分别以水、吸附颗粒、吸液颗粒、活性炭作为洗消剂进行洗消,同时用AreaRAE RDK快速部署系统进行实时检测,分析洗消前后皮肤表面毒物浓度变化情况,测定各类洗消剂对化学毒物的洗消效果,在此基础上确定最适合的洗消剂以及洗消剂的用量和洗消时间。实验结果表明,只要水对苯和甲苯的洗消时间足够长,就能够将皮肤表面的染毒物质彻底消除。吸附颗粒、吸液颗粒、活性炭三种固体洗消剂都能够有效地消除皮肤表面的沾染物。对苯的洗消,活性炭效果最好,其次是吸液颗粒和吸附颗粒。对甲苯的洗消,则是吸附颗粒效果最好,其次是吸液颗粒和活性炭。     

Effect of various parameters on the ultraflocculation of fine sorbent particles,used in the wastewater purification from organic contaminants

A sorbent (Organosorb) is used in the wastewater purification from organic contaminants, here simulated by tetradecane. A short hydrodynamic treatment in a rather intense hydrodynamic field (G>10(3)) (called ultraflocculation) is applied to the sorbent suspension to which a flocculant is added. The efficiency of removal of the sorbent is studied. The sorbent concentration, the flocculant concentration, the treatment time, the organic pollutant (which has to be sorbed by the sorbent), the detergent (used for the emulsification of the pollutant), the pH and the calcium concentration of the water all influence the flocculation efficiency (E) of the sorbent particles. For each set of these parameters there exists an optimum intensity of the hydrodynamic treatment at which maximum flocculation efficiency is reached. An increase in the optimum intensity of the hydrodynamic field corresponds to an increased floc break-up, and consequently a lower maximum flocculation efficiency.     

高温煤气净化研究

介绍了在流化床和固定床反应器中对同温煤气中的硫化物、NH3、HCl、焦油组分和碱金属化合物等脱除的全面研究。通过对含量较少的污染物有要硫、NH3、HCl、焦油组分和碱金属化合物等分别进行单独和同时脱 除的研究，提出了同时脱除高温煤气中这些污染物的设想。