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山西将“破例”率先召开煤炭订货会--? 本文由 盖德化工论坛 转载自互联网 在 煤炭 供需形势发生变化的敏感时期,山西省将打破常规,率先召开省内的煤炭订货会。   山西省内煤炭订货会将在11月12日、13日召开。而在此之前,山西省内煤炭订货会都在国家的煤炭产运需衔接会之后召开。2007年,国家将煤炭订货会更名为产运需衔接会。此后,电煤的订货制度面临更进一步的改革。   “目前山西省内的煤炭企业已经进行了订货会的前期谈判工作。”山西省煤炭工业局副巡视员侯文锦告诉《财经》记者。根据目前的谈判进展,山西省焦煤明年的合同价格将有大幅度下降,其中主焦煤价格降幅将会达到30%左右,配焦煤的降价幅度更高。“不过,电煤的重点合同价格与市场价格差距仍很大,今年可能还略有上涨。”   11月6日上午,太原煤炭交易中心召开了“山西省煤炭销售工作座谈会”。山西省五大煤炭集团、省直属矿、计划单列单位、山西煤销集团等主要供煤企业悉数参会。在会议上,交易中心披露了“2009年度省内用煤交易会”、“全国煤炭产运需衔接合同汇总会”工作准备情况。   在会议上,有关企业人士发言时指出,受电力、冶金、化工等下游的影响,煤炭需求量骤减,价格开始大幅下滑,拖欠煤款成为普遍的现象。不过,煤电企业对供需的判断仍存在一定分歧。   在11月的第一个星期,秦皇岛煤价每吨大幅下挫40元左右,成为今年单周降幅最大一周。秦皇岛港动力煤的库存最高时超过900万吨,经过发改委几次紧急疏港,目前的库存一直维持在800万吨左右。不过,大同等产地的优质动力煤的存量很少,有些地区形成价格倒挂,合同电煤仍有价格上涨的趋势。   “由于对供需形势仍存在分歧,山西省内的订货会上的电煤合同,很可能签量不签价。”一位电力业内人士告诉《财经》记者。   根据山西煤炭交易中心的统计,2008年1月至9月,山西重点电煤平均售价上涨169元/吨。而同期煤炭综合成本上涨137元/吨。   近日,山西省副省长陈川平在2009年度省内电厂用煤会议上表示,鼓励煤电双方签订中长期合同、努力构造长期合作的电煤关系。“省内煤炭企业与省内电厂要建立长期稳定的合同关系,不仅可以共同承担市场风险,还可以共同确保经济效益。”他要求,从2008年开始,山西省里都要做好省内电厂与煤炭供货合同的签订工作,每个电厂必须与煤炭企业特别是国有重点煤炭企业签订合同,并作为强制措施来落实。查看更多 0个回答 . 2人已关注
ASPEN可以模拟计算物流的(火用)值吗? 分析特定的化工工艺过程,利用ASPEN模拟软件可以轻松的得到物流数据,可得到物流的温度,压力,焓值,熵值,物流平均分子量等数据信息,那ASPEN可以计算物流的(火用)值吗?理论上来说可以啊,根据计算(火用)值的基本方程式就可以计算出来,怎么在ASPEN模拟软件中找不到(火用)的数据值呢?跟所用的ASPEN版本有关吗?查看更多 14个回答 . 4人已关注
冷箱界定:冷箱是否默认为一个整体? 请教各位盖德,购买空分 成套设备 时,冷箱是否默认为一个整体(即冷箱内塔器、管道、钢结构及冷箱板材都为卖方供货)?另通常所说的单元包供货,此单元包具体包含哪些范围?查看更多 2个回答 . 4人已关注
英语太滥了,请求大虾帮忙翻译一下文献【文献翻译进行中 ...? 1.TI: Removal of organic sulfur from coke oven gas- 1, (Entfernung von organischem Schwefel aus Koksofengas) SOMMERS H; LAST W Source: Erdoel Kohle-Erdgas-Petrochem ver mit Brennst-Chem, v 24, n 7, p 473-477, July 1971 Abstract: For the hydrocatalytic reaction of coke oven gas with hydrocarbons to rich gas, a far- reaching removal of the organic sulfur from the gas is necessary which is achieved by single step or two step processes, preferably at increased temperatures. The reaction equations and conditions of equilibrium, being of great importance for the conversion of organic sulfur to hydrogen sulfide as well as for the absorption of hydrogen sulfide, are drawn up, calculated and discussed. The experimental arrangement, the process of analysis, and the properties of the material used are described. (3楼的反馈帖,移动至主贴方便大家看原文 - leteblink) Ti :从 焦炉煤气 1中脱除有机硫(德文:从焦炉煤气中脱除有机硫) 文献来源:石油和天然气的煤化工与石化版本 SOMMERS H v 24, n 7, p 473-477, July 1971 摘要:对于富碳氢化合物的焦炉煤气水催化反应,特别是提高温度,通过单步或两步流程,即可达到对焦炉煤气中的有机硫深度脱除。对于有机硫转化为硫化氢以及硫化氢吸收的反应方程和平衡条件有很大的改进,并进行了计算讨论。实验还对分析过程以及使用的材料性能作了论述。 2.Oxidation of hydrogen sulfide of coke-oven gas on new catalysts containing active carbon Lipovich, V.G.; Kapustin, M.A.; Dombrovskij, E.V.; Kolomin, S.A.; Source: Khimiya Tverdogo Topliva, n 2, p 90-95, Mar-Apr 1992 Abstract: New catalysts for coke gas purification from hydrogen sulfide by means of its oxidation were suggested. Besides Ni, Co, Cr, Fe, Cu, V and W the catalysts contain active carbon. The action of active carbon is reduced to creation of a highly developed catalyst surface. The catalysts are active in hydrogen sulfide oxidation up to elementary sulfur already at 20-80 ° C. Aluminium oxide and chromium oxide base catalysts manifest the highest activity. Increase in the temperature above 60 ° C decreases the catalysts do not manifest activity as regards hydrogen sulfide 3.FORMATION OF AMMONIUM THIOCYANATE IN THE OXIDATIVE PURIFICATION OF COKE OVEN GAS. Panferova, D.; Lebedeva, G.N.; Peskova, D.V.; Maiskaya, G.G. Source: Coke & Chemistry (USSR), n 5, p 46-50, 1985 Abstract: The authors present the results of a study of the kinetics of reaction of the polysulfides produced in the dissolution of sulfur and in the oxidation of sulfide in the ammonium thiocyanate formation reaction. The experiments were conducted in a static system. It is shown that polysulfides obtained by oxidation of ammonium sulfate in the presence of catalyst have greater reactivity for cyanide ions than polysulfides formed in the dissolution of sulfur in ammonium sulfide. The rate of formation of thiocyanide exceeds the rate of oxidation of sulfide by the catalyst in the oxidized form, the difference increasing with temperature. The higher rate of formation of thiocyanide makes this reaction selective in the process of oxidative purification 4.Platinum Catalyst for Purification of Coke Oven Gas from Acetylene. (Platinum Catalyst for Purification of Coke Oven Gas from Acetylene.) Klimiec, Jacek; Atamanczuk, Bronislaw; Nowicki, Boguslaw Source: Przemysl Chemiczny, v 59, n 6, p 334-336, Jun 1980 Language: Polish Abstract: In the reported experiments, the usability of platinum catalysts on metal base in the process of hydrogenation of acetylene contained in coke oven gas has been investigated. It is found that platinum catalyst on the carrier, modified with boric acid and thorium nitrate, is capable of removing 100% of acetylene, at the temp. 550 K and the catalyst loading with 3 divided by 7 Nm**3/kg//c//a//t//. multiplied by (times) hr of gas, without changing the ethylene content 5.PRODUCTION OF AMMONIUM THIOCYANATE DURING OXIDATIVE PURIFICATION OF COKE-OVEN GAS. Lebedeva, G.N.; Panferova, G.D.; Kuznetsova, Z.I. Source: Coke and chemistry U.S.S.R., n 3, p 44-47, 1980 Abstract: Investigations were conducted on the separation of ammonium thiocyanate from the liquors of oxidative sulfur and cyanide removal from coke-oven gas, used in plants in the East. On artificial mixtures it was shown to be possible to separate ammonium thiocyanate from liquors containing ammonium thiosulfate and sulfate. The quantitative limits of these impurities were determined. Ammonium thiocyanate meeting the specifications of GOST standard 19522-74 with a yield of 89% was obtained from oxidative purification liquors with a catalyst by means of hydroquinone 6.TESTING OF A PROCESS OF OXIDATIVE REMOVAL OF SULFUR AND CYANIDE FROM COKE OVEN GAS. Andrzheevskii, M.Yu.; Lyapkin, A.A. Source: Coke and chemistry U.S.S.R., n 9, p 63-67, 1987 Abstract: The process of oxidative sulfur and cyanide removal using CDSP (Cobalt Disulfophthalocyanin) catalyst ceases with accumulation of free cyanide ion in the wash solution. Practical use of this process requires constant bonding of cyanide by a stoichiometric quantity of sulfur. A thermal retention of the solution should be provided to accelerate thiocyanate formation. 7. Development of the coke gas desulfurization technology Platonov, Oleg I.1 Source: 2006 TMS Fall Extraction and Processing Division: Sohn International Symposium, v 5, p 193-201, 2006, Sohn International Symposium: Advanced Processing of Metals and Materials - Proceedings of the International Symposium Abstract: The process for desulfurizing coke oven gas in a regenerative system "scrubber-stripper", with sour gas being fed to Sulfur Recovery Unit (SRU) and tail gas being recycled to raw coke gas scrubber, has been developed. A key problem of this process is the presence of elemental sulfur in the SRU off-gas, which may deposit on gas-blowing equipment, thus disrupting its operation. A new treatment technology for SRU off-gas that has been worked out for a Claus unit operated by « Russian Metallurgical Company » (RMC) in Magnitogorsk (Russia) is presented. It incorporates a catalytic hydrolysis/hydrogenation stage, where all sulfur-bearing species such as sulfur dioxide, carbonyl sulfide and elemental sulfur are converted to hydrogen sulfide. The SRU in Magnitogorsk comprises three main units: gas re-heater; catalytic hydrolysis reactor and waste gas cooler. Re-heater is required to increase temperature of the process gas up to a level of catalytic conversion (beyond 330-3500C). Oxygen utilized as an oxidizing agent reduces the volume of waste gas to a minimal possible value. The operational data garnered since 16.07.2004 clearly shows that the new technology allows high-level purification of Claus tail gas from elemental sulfur. Unlike SCOT - process, this technology does not require separate stages for H2S removal and enrichment that tangibly simplifies its implementation at lower capital and operation expenditures 8.Desulfurization of Biogases on Gas Purification Material. (Desulfurization of Biogases on Gas Purification Material.) Drautzburg, Guenter1 Source: GWF, Gas - Erdgas, v 126, n 1, p 36-41, Jan 1985 Language: German Abstract: Dry biogas desulfurization is practiced most often in sewage treatment plants. Most of the time, tower desulfurizers containing a coarse-grained, abrasion-resistant purification material (ferric hydroxide) are employed for this purpose. Up to the point where total saturation with sulfur is achieved, this material is either charged and regenerated by air alternately, or else air is added to the untreated gas, so that both reactions can occur simultaneously. Tower desulfurizers are designed for long periods of operation. At large sewage treatment plants hurdle purifiers such as those used for the purification of coke oven gas are also employed. 9.Refinery process for processing coke oven gas, involves selectively removing ammonia and hydrogen sulfide after converting unsaturated hydrocarbons to obtain ammonia and hydrogen sulfide 专利号: JP2000248286-A 摘要: NOVELTY - Unsaturated hydrocarbons are converted into saturated hydrocarbons and H2O, HCN, NH3 and CO are converted into CH4 and/or NH3 while COS is converted into H2S. The removal of one of NH3 and H2S whose existence causes problems is selected. The removal of the other is then selected. USE - For processing coke oven gas obtained as a byproduct during dry distillation of coal to manufacture coke. ADVANTAGE - The purification of the COG can be performed reliably, since impurities which cause problems in a next step are removed during the previous step, while selectively removing NH3 and H2S. Good operativity and good economical efficiency can be secured, while refining the COG into a heating gas or a raw material gas for chemical industries, since removal of impurities can be smoothly performed in each step. Contamination to the environment can be prevented. 详细说明 - At least the heavy parts, e.g. tar and dust, are removed, when performing refinery processing of a coke oven gas (COG) containing impurities such as hydrogen sulfide (H2S), carbonyl sulfide (COS), ammonia (NH3), hydrogen cyanide (HCN) and the unsaturated hydrocarbons which contain 2-4C in a molecule and oxygen. The conversion of unsaturated hydrocarbons is performed into saturated hydrocarbons containing 2-4C by hydrogenation and making the hydrogen combine with oxygen to form water. The hydrolysis and/or hydrogenation of the HCN and NH3 is performed in the presence of hydrogen contained in the water vapor while converting the carbon monoxide (CO) and ammonia (NH3) into methane (CH4). 10.Coke oven gas purificn. - by hydrogenating unsatd. hydrocarbon cpds. and oxygen in the core oven gas with palladium catalyst 专利号: JP61089294-A; JP91049960-B 摘要: Process comprises hydrogenating unsatd. hydrocarbons and oxygen on the coke oven gas with Pd catalyst. Pd catalyst is one contg. almost no chlorine. The temp. of the coke oven gas at the inlet of the Pd catalyst is held 100-200 deg. C. The temp. of the gas at the outlet of the Pd catalyst zone is 270-330 deg. C by the exothermic deoxidation of O-cpds. and hydrogenation of unsatd. hydrocarbons. No external cooling device is necessary for the reactor. The gas is then treated with hydrodesulphurisation catalyst (e.g. Ni, Ni-Mo catalyst etc.) for removing organic S-cpds., or with zeolite, etc. to separate hydrogen. USE/ADVANTAGE-As aromatic cpds. or oxides of nitrogen are removed previously by compressing the coke oven gas to 60-150 deg. C in a hot bottle to cause polymerisation of acetylenes or dienes and absorbing such components with oil, no NOx nor aromatic cpds. are contained in the feed gas. The gas is then treated with Pd catalyst to hydrogenate oxygen or unsatd. hydrocarbons selectively and sufficiently. Addn. reaction of H2S, if any, to remaining unsatd. hydrocarbon, resulting by-prodn. of organic S cpds. nor organic acids, are avoided. Corrosion of the reactor is prevented. 11.Fuel gas purification - by two=stage catalytic hydrogenation at two different temps. 专利号: JP59230090-A 摘要: Process for purifying coke oven gas contg. dienes, O2, olefins and S cpds. comprises hydrogenating the gas in two stages wherein dienes and O2 are predominantly contact hydrogenated at the inlet temp. of 100-230 deg.C and hydrogenating temp. or up to 350 deg.C in the presence of catalyst comprising Ni and/or Co or metal of Pt gp. in the first stage and the remaining olefins and S cpds. are contact hydrogenated at the outlet temp. of up to 450 deg.C in the presence of catalyst comprising Ni and/or Co and M Mo in the second stage. The first stage is carried out by recycling a portion of purified gas in an amount of 10-1,000 % of the crude coke oven gas at 150 -350 deg.C, press of 2-100 kg/cm2 and SV of 500-50,000 hr-1. The second stage is carried out at 300-450 deg.C and SV of 500-50,000 hr-1. After the second stage formed H2S may be removed by using solid absorbent (e.g. ZnO, Fe2O3, CuO or activated carbon. ADVANTAGE-The two stage process reduces polymerisation of dienes to form gummy material since the first stage hydrogenation is at a relatively lower temp. 12.Hydrogenation of hydrocarbon oils 专利号: JP71016672-B 专利权人和代码:NIPPON STEEL CHEM CO(YAWH-C) 摘要: Method of purifying hydrocarbon oils contng. aromatic hydrocarbons (e.g. coke oven light oil,oil gas light oil or cracked gasoline) by two-step method comprises contacting the hydrocarbon oils with a nickel-molybdenum catalyst of 0.5-3 atomic ratio of nickel to molybdenum in liquid phase or gas-light mixed phase, in the presence of hydrogen as 0.5-10 mol. per 1 mol. of hydrocarbons, at 100-170 degrees C., 10-60 kg./cm.2 hydrogen partial pressure, and 1-10 hr.-1 LSV. The resulting primary hydrogenation reaction mixture is contacted with secondary hydrogenation purification catalysts in vapour phase in presence of hydrogen (0.5-10 mol. per 1 mol. of hydrocarbons) at 250-500 degrees C., 10-50 kg./cm.2 hydrogen partial pressure, and 0.4-5 hr. -1 LSV. The purified oils do not contain sulphur compounds, nitrogen compounds, oxygen compounds, and ethylenic unsatd. compounds. 13.Catalytic hydrogenation of polycyclic aromatic hydrocarbons with coke oven gas BRAEKMAN-DANHEUX C; FONTANA A; LAURENT P; LOLIVIER P Fuel : (Guildford) , 1996 , Volume: 75 , Number: 5 , Page: 579-584 Abstract: To improve the economy of the conversion of polyaromatic molecules to their hydroaromatic analogues, catalytic hydrogenation of phenanthrene has been carried out under pressure of different simulated coke oven gases instead of pure hydrogen. The influence of reaction time, temperature and pressure on the hydrogenation yields and on the nature of the obtained products has been studied. Comparisons have been made with reaction with pure hydrogen under the same conditions. The influence of the different components of a real coke oven gas has also been indicated. The results indicate that coke oven gas can be used if the goal is to obtain not perhydroaromatic compounds for thermal cracking but partly hydrogenated compounds to be used as hydrogen donor solvent in a coal liquefaction process. The results have been applied to highly aromatic fractions of coal tar. 查看更多 9个回答 . 4人已关注
乙二醇生产消耗定额? 在此请教一下,谁知道 乙烯 生产 乙二醇 的消耗定额 请提供一下 谢谢了查看更多 2个回答 . 2人已关注
请问:从真空系统中抽取液体,用哪种泵好呀? 小弟在做中试放 大生 产设计,有一套真空脱溶装置,需要从真空接受罐中在线抽出馏分,不能放空。请教各位大侠,该选用什么类型的泵呀? 真空度比较高,不过也不是高真空状态,就是一般的升膜蒸发装置。输出速度低于200L/min。 老板催得紧,小弟又是个菜鸟,叩谢各位多多帮忙啦!查看更多 7个回答 . 2人已关注
2005职称日语考试 B级.? 虽然有点老了,但是你要知道,职称考试每年的题都是大同小异的。希望对有用的人有所帮助。查看更多 0个回答 . 4人已关注
油冷却器如何清洗? 制冷压缩机 油冷却器 如何清洗,那位有好方法。查看更多 14个回答 . 1人已关注
氯气和氮气会反应吗? 在什么样的环境下,氯气和氮气能反应生成 三氯化氮 吗?在氯气 透平机 处使用氮气会产生三氯化氮吗? , , - 查看更多 36个回答 . 1人已关注
太阳能级多晶硅和金属硅各种规格指标? 产品名称 元 素 含 量 % 5n 多晶硅 硅si99.999 铁fe0.0001 铝ai0.0002 钙ca0.00009 磷p0.000008 钛ti0.000007 硫s0.000072 硼b0.000007 锰mn0.000003 铅pb0.00001 锆zr0.000003 炭c0.0001 4n多晶硅 硅si99.99 铁fe0.004 铝ai0.001 钙ca0.001 磷p0.0002 钛ti0.0002 硫s0.002 硼b0.0004 锰mn0.0002 铅pb0.0002 锆zr0.0004 炭c0.006 3n多晶硅 硅si99.96 铁fe0.007 铝ai0.009 钙ca0.001 磷p0.0009 钛ti0.0002 硫s0.003 硼b0.0006 锰mn0.0003 铅pb0.0003 锆zr0.0004 炭c0.008 各规格 金属硅 硅si 铁fe 铝ai 钙ca 磷p 硼b 1101金属硅 ≥99.70 ≤0.1 ≤0.1 ≤0.01 ≤0.002 ≤0.002 2202金属硅 ≥99.50 ≤0.2 ≤0.2 ≤0.02 ≤0.003 ≤0.005 3303金属硅 ≥99.30 ≤0.3 ≤0.3 ≤0.03 ≤0.006 3305金属硅 ≥99.25 ≤0.3 ≤0.3 ≤0.05 441金属硅 ≥99.00 ≤0.4 ≤0.4 ≤0.10 553金属硅 ≥98.5 ≤0.5 ≤0.5 ≤0.30 [ ]查看更多 7个回答 . 2人已关注
如何理解"图中所注尺寸如与现场实际不符请以实际为准 ...? 最近突然对图纸上的一句话产生了点想法 图纸说明上的“图中所注尺寸如与现场实际不符请以实际为准” 可以怎样理解这句话呢? 按图施工,还是按现场施工? 我们接触的大部分都是我们厂里设计院设计的图纸 象这种尺寸与现场有偏差的再所难免,尤其是技改工程 但作为我们施工人员对这样的情况是很无奈 有很多时候不敢预制的,怕按图纸的尺寸做了到现场还给不上 返工浪费时间不说,也浪费材料 不知道大的设计院,这一点是怎么做的 欢迎大家积极讨论对这句话的理解和你们在这方面的经验, 最好介绍一些大院的经验,谢谢 [ ]查看更多 9个回答 . 1人已关注
有没有专门的玻璃钢树脂网站? 玻璃 钢的 树脂 材料很多,有没有专门的网站,可以了解树脂供应单位和价格的,最好能每天更新的?查看更多 1个回答 . 4人已关注
压力容器外压稳定系数在哪个标准中有? 压力容器 外压稳定系数在哪个标准中有,请指教...查看更多 4个回答 . 1人已关注
神华销售集团电子交易步入发展快车道? 本文由 盖德化工论坛转载自互联网 进入2014年,神华销售集团电子交易工作步入发展快车道。沿线竞价采购全面推开,高栏港常态化电子交易试点初战告捷,电子交易平台二期项目建设有序推进。机制的创新推动了业务的发展,截至4月28日,神华 煤炭 交易网当月交易量完成2094万吨,这是平台开市以来继2014年3月份交易量达到2409万吨后,第二次月度交易量突破2000万吨大关。 沿线竞拍构筑阳光销售通道 电子竞价交易既能体现“公开、公正、阳光”的原则,又能探索价格发现机制,助力企业实现效益最大化。2013年,销售集团全年煤焦竞价销售255.7万吨,累计增收1649万元;化品竞价销售21.3万吨,增收1236万元。 在竞价销售为销售集团有序推进的同时,竞价采购也提上了议事日程,也成为销售集团电子交易工作的重点之一。经过充分准备,销售集团华北公司于3月28日首次开展外购煤电子竞价采购,70万吨采购量全部成交。第一次外购煤电子竞价采购吸引了20余家供应商参与,成交率超过90%。截至4月30日,华北公司已实现外购煤电子竞价采购量245万吨。 华北公司竞价采购成功标志着销售集团从煤源组织到煤炭销售全业务过程实现了电子交易,并得到了市场的认可。竞价销售及外购煤竞价采购的顺利实施,把采购及销售业务放在阳光下,公开、透明的业务过程减少了人为因素的影响,让市场决定供需关系,一定程度上推进了煤炭交易市场化进程,也让电子交易成为了神华销售工作的一张新名片。 高栏港试点让市场持续发力 神华煤炭交易网初期实行的挂牌和竞价电子交易模式,在市场平稳和上行阶段执行的效果比较好,但在煤炭市场下行阶段难以执行。因此,探索建立一套常态化的电子交易机制迫在眉睫。 从2014年开始,销售集团以高栏港作为试验田,努力探索一条电子交易常态化运行的新路子。试行期间高栏港改季度定价、月度定价为每天一定价,同时推出密封报价和无底价竞拍,使用户的出价更加灵活、成交价格更加贴近市场,神华煤在周边地区的竞争优势更加明显。 靠市场发力,高栏港电子交易量规模和客户群不断扩大。得益于大规模电子交易的开展,高栏港办事处3月份市场煤成交量日均1.69万吨,较2月份日均0.56万吨的水平翻了3倍。进入4月份,电子交易成交量稳步提高,单日成交量记录屡次被刷新,在4月25日成交12笔、10.88万吨,单日成交量首次突破10万吨,这几乎相当于电子交易未全面推开前高栏港办事处20天的销量。1-4月份,高栏港办事处新增注册客户91家(4月份新增50家),4月底注册客户达到112家,80%以上为市场户,一个以高栏港为中心、辐射珠三角的区域客户群初步形成。 第三方交易潜力值得期待 2014年5月8日,神华煤炭交易网将迎来周岁生日,在一年内完成了将近1.8亿吨的交易量,交上了一份可喜的答卷。经过近一年时间的业务开展、平台运行、系统完善,销售集团上下对电子交易业务有了更深刻的认识和体验,同时对做好这项业务也有了一些新的谋划。 目前,销售集团正在开展二期软课题的研究,随后即将进行二期平台建设,联合物流企业、金融机构开展第三方交易。年底平台建设完毕后,煤炭生产商和贸易商在线上即可得到铁路运输、物流配送和金融服务支持,这无疑会增强神华电子交易的吸引力,并将成为神华销售业务新的增长点。查看更多 0个回答 . 2人已关注
radfrac模块蒸馏计算过程出错? 蒸馏塔计算条件:1.0MPa, 温度计 算试定,已知进料液为:H2S, CO2, NH3, HCN, H2O, H2,N2的 混合液 ,含量分别为993.39kg/h,1241.62kg/h,630.63kg/h,38.77kg/h,28627.45kg/h,0.55kg/h,0.56kg/h, 进料温度为75℃,进料压力通过计算选定,初步定为塔板数为18块 (包含再沸器和 冷凝器 ),进料位置为中间进料。 要求蒸馏产品:塔顶产品主要为H2S和CO2气体,其中NH3含量小于50PPM;塔底产品为氨水,其中H2S小于等于10PPM,CO2小于10PPM, 通过计算要求得到塔顶,塔底产品的流量及各物质具体含量,计算过程中一直出错,请求高人指点。由于处理液中包含的物质会发生水解反应,所以初步考虑的是采用电解质elecnrtl物性计算方法,但是计算过程一直出错,不知该如何调试,如附件所示。请求高人指点,谢谢 elecnrtl.bkp(111.09KB) elecnrtl.bkp(111.09KB) 查看更多 1个回答 . 4人已关注
变频器输出侧电缆长度? 请问各位盖德,如果 变频器 输出侧电缆的长度超过了变频器要求长度,会有什么现象发生呢?我们用的是西门子430变频器查看更多 1个回答 . 5人已关注
大家一起讨论己二酸项目前景,产能,以上马工程? 大家一起讨论 己二酸 项目前景,产能,以上马工程查看更多 0个回答 . 2人已关注
转化触媒消耗指标? 转化触媒消耗量是 硫酸 经济技术指标中的重要项目,近年来随着环保压力的增大,转化触媒消耗量的问题逐渐引起业内人士的注意。 个人认为转化触媒消耗量主要取决于以下2个因素: 1、净化指标,尤其是砷、氟指标; 2、环保要求,如果尾气要求达标,那只有提前更换触媒,相应地要上调触媒消耗指标。 我厂是冶炼烟气制酸,早先净化流程为浓酸酸洗,净化指标差,触媒消耗量一度高达0.5kg/t酸。目前我厂硫酸净化已经改为稀酸封闭酸洗流程,净化指标逐渐改善,目前厂部下达触媒消耗量为0.25kg/t酸。不知道 硫磺 、 硫铁矿 制酸触媒消耗指标是多少? [ ]查看更多 11个回答 . 4人已关注
简述外冷器满液位操作原理? 简述外冷器满液位操作原理?查看更多 3个回答 . 4人已关注
直流电机600V电缆选型问题? 现遇到一600V 800kw 1150A 直流电机 不同厂家有不同的配置 一类是 270 单根铜芯电缆 二类 2跟185 铜芯电缆,本人按照电流载流表和口诀计算后1150A电流 600mm^2电缆 ,, 以前见有点地方说每平方毫米铜电缆的载流约为6--8A 这样算下来后 1150A 电流 只需要200左右铜芯电缆就足够了, 有没在设计所做这项工作的盖德呢 , 这厂家提供电缆时是如何计算的 平时计算电缆载流量是根据10下5 这个计算还是1.5按9倍面积增1 倍数减1算 ,这两个计算口诀不同在何处呢 查看更多 0个回答 . 2人已关注
简介
职业:国峰清源生物能源有限公司 - 化工主管
学校:湖南科技大学 - 化学化工学院
地区:山东省
个人简介:无聊就是无话可说,也无事可做!寂寞就是无聊时,耳朵塞着耳机……发呆!查看更多
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