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shell气化有氧气预热器,不知道造价高不高,为什么别的 ...? e-3309把氧气由30℃预热到180℃,目的是防止氧气温度过低,在与过热蒸汽混合时造成蒸汽冷凝,造成低温腐蚀管道和煤烧嘴。查看更多
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不是化工设计工作考注化有没有意义? 当然有意义,这是终生受益 的事情查看更多
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纯进口纤维床除雾器? 查看更多
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mvr蒸发器在硫酸铵的应用? 嗯,关于mvr技术我现在刚入行,很多内容都不是特别清楚,如果有更加具体详尽的内容就更好啦 查看更多
主风机入口流量正常,出口压力过低会有什么现象啊? 只有一种可能:主风管线漏大了或反喘阀失灵,此时主风低流量连锁,装置停工状态。没有别的可能。风机流量是靠入口碟阀或静叶角度来控制,当流量达到临界状态时,流量就不会再增加了,所以出口压力低流量不变。查看更多
求助:一个储罐区内两个储罐组(区)之间的防火间距? 这个按石化规来做就很容易理解了,罐间距为0.75d; 罐组与其他设施的防火间距按相邻最大罐溶剂确定; 储罐应成组布置,并应符合下列规定: 1. 在同一罐组内,宜布置火灾危险性类别相同或相近的储罐;当单罐容积小于或等于1000m3时,火灾危险性类别不同的储罐也可同组布置; 2. 沸溢性液体的储罐不应与非沸溢性液体储罐同组布置; 3. 可燃液体的压力储罐可与液化烃的全压力储罐同组布置; 4. 可燃液体的低压储罐可与常压储罐同组布置。 关于罐组的内容,最好能自己多读一下石化规的第6章内容查看更多
请问低温甲醇洗技术中尾气中的H2S含量有多少? 林德给的工艺包是7ppm。查看更多
来自话题:
这种拉紧装置叫什么名字?!? 是台烘箱吗?这个拉的叫搭扣,一种快开结构。查看更多
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外行眼中的设备是这样的你造吗? 那得咱们了解他啊,不了解的话,他也是超能装的查看更多
钛管冷却器? 当然啦~~耐酸耐碱耐热!查看更多
讨论一下,SHELL喷嘴设计特点。? 2lou楼可以给我们点指示啊 不知道你们具体在什么方面改进了查看更多
为什么我们的炼油厂总喊着亏啊? 1.是体制问题. 2.原油成本和成品油价格无法挂钩是主要原因. 3.是管理机构太多、社会责任太多.查看更多
氯气和氯化氢在四氯化碳和四氯乙烯中的亨利常数? 找了几篇,摘要见下面。chemical engineering science 一般大学图书馆都有。俄文的摘要中都有关联式,可直接用。 kinetics of tetrachloroethene photochlorination. ledakowicz, s.; miller, j. s. fac. process environ. eng., lodz tech. univ., lodz, pol. chemical engineering science (1993), 48(13), 2443-51. coden: cescac issn: 0009-2509. journal written in english. can 119:94779 an 1993:494779 caplus abstract the kinetics of photochlorination of tetrachloroethene in the presence or in the absence of a solvent (ccl4) in which mass transfer from the gas to the liq. phase is followed by fast free-radical reactions initiated with light was studied in a model stirred contactor with a plane liq. inte**ce. measurements of the gas- and liq.-side mass transfer coeffs. were made in the contactor by using cl2-ccl4 and cl2-kiaq systems, resp. the soly. of chlorine in reaction mixts. and of hexachloroethane in ccl4 and c2cl4 was also detd. the kinetic parameters of the reaction rate model derived from the study of the photoreaction in a homogeneous system were identified based on exptl. results in the gas-liq. system. the validity of the reaction rate model for homogeneous photoreaction in the presence of carbon tetrachloride was confirmed for c2cl4 concns. above 2 mol/dm3 in the reaction mixt. kinetic parameters for homogeneous and heterogeneous systems in the presence of the solvent were compared and discussed. solubility of chlorine in carbon disulfide and products of its chlorination. raskina, a. d.; zetkin, v. i.; zakharov, e. v.; kolesnikov, i. m.; kosorotov, v. i. ussr. zhurnal prikladnoi khimii (sankt-peterburg, russian federation) (1972), 45(6), 1333-4. coden: zpkhab issn: 0044-4618. journal written in russian. can 77:80015 an 1972:480015 caplus abstract the soly. of cl (b) in cs2, ccl4, cscl4, and their mixts. was detd. by the satn. method in the absence of light at t = 275-324°k. the results were correlated by the equations log b (mole %) = 1250/t -3.18 at 275-298°k for cs2, log b = 1180/t - 3.17 at 273-324°k for ccl4, and log b = 1250/t - 3.20 at 275-308°k for cscl4. heats, entropies, and gibbs free energies of soln. of cl were calcd. expts. with cl + n mixts. confirmed validity of henry's law. the soly. in the mixt. calcd. from an additivity rule agrees well with the expts. solubility of chlorine in tetrachlorides. martynov, yu. m.; davidovskaya-chemelinskaya, i. v.; borodulina, e. k. zhurnal prikladnoi khimii (sankt-peterburg, russian federation) (1966), 39(12), 2650-5. coden: zpkhab issn: 0044-4618. journal written in russian. can 66:59361 an 1967:59361 caplus abstract the systems cl-ccl4, cl-sicl4, cl-ticl4, cl-sncl4 were examd. in an absorption vessel fitted with a magnetic stirrer by introducing the solvent (15-25 g.), cooling the vessel to -70°, evacuating the system to 3-5 torr, and then heating it to a given temp. a measured vol. of cl was introduced, and after the establishment of equil. the pressure was read on a hg manometer. the dependence between the partial pressure of cl and its concn. in the soln. at const. temp. (t) is linear in all cases. the relations between the logarithm of the henry coeff. (h) and the abs. temp. are: for cl-ccl4 log h = -879/t + 3.74; for cl-sicl4 log h = -924/t + 3.93; for cl-ticl4 log h = -941/t + 4.0; for cl-sncl4 log h = -996/t + 4.16. the heats of dissoln. of cl do not depend on temp. within the temp. range studied. the behavior of the systems considered is distinguished by a systematic decrease of the heat of dissoln., i.e. by a regular change in the value of interaction between the components of the solns. the relative error of the measurements did not exceed ±5%. the molar differential heats of dissoln. of cl are linearly related to the logarithm of the ordinal no. of the central element of the mol. of the solvent. 15 references. solubility of chlorine in perchloroethylene and pentachloroethane. belenko, yu. g.; ivanova, i. p. ussr. zhurnal fizicheskoi khimii (1974), 48(3), 716. coden: zfkha9 issn: 0044-4537. journal written in russian. can 81:6736 an 1974:406736 caplus abstract the soly. of cl in c2cl4 and c2hcl5 was detd. at 0-80° and 760 mm hg. at o°, cl soly. is proportional to its partial pressure (obeys henry's law). the solubilities are (log soly.): c2cl4, (-4.05 ± 0.19) [(4470 ± 270)/rt] and c2hcl5, (-3.52 ± 0.16)[(3950 ± 220)/rt]. the entropies of soln. at 20° are -10.9 and -12 entropy units, resp. liquid-gas equilibrium in hydrogen chloride-carbon tetrachloride and nitrosyl chloride-carbon tetrachloride systems. khodeeva, s. m.; rozovskii, m. b. gos. nauchno-issled. proektn. inst. azotn. prom. prod. org. sint., moscow, ussr. zhurnal fizicheskoi khimii (1975), 49(6), 1396-400. coden: zfkha9 issn: 0044-4537. journal written in russian. can 83:121546 an 1975:521546 caplus abstract the equil. pressure in the hcl-ccl4 and nocl-ccl4 systems was detd. at 2.5 mole% hcl, 12.5 mole% nocl, 1 atm, and 20-50°. equil. compns. of the vapor and liq. phases were calcd. concn. dependences of partial pressures of the components were correlated by an empirical equation. integral heats of soln. of hcl and nocl in ccl4 and henry's consts. were calcd. the absorption of hydrogen chloride in various organic liquids and calculation of the heat of absorption. i. hamai, senzo. bulletin of the chemical society of ** (1935), 10 5-16. coden: bcsja8 issn: 0009-2673. journal language unavailable. can 29:22102 an 1935:22102 caplus abstract the soly. of pure hcl in clch2ch2cl, brch2ch2br, cl2chchcl2 and ccl4 was detd. at 15°, 20° and 25° at pressures in the range 300-800 mm., and the mole fraction calcd. from henry's and raoult's laws. the heats of soln. are, resp., 3500, 3200, 3300 and 6100 cals. the solvent power of the liquids decreases in the above order, as does their total bond energy; no exact correlation with polarity or internal pressure is found. determination of solubility coefficients by aspiration. jones, w. j. univ. coll., north wales. journal of the chemical society, transactions (1911), 99 392-404. coden: jchta3 issn: 0368-1645. journal language unavailable. can 5:11188 an 1911:11188 caplus abstract the solubility coeffs. (ratio of conc. in the liquid phase to conc. in vapor phase under equil. conditions) for volatil solutes obeying the laws of dalton and henry are detd. experimentally from the amount of solute carried away when a known vol. of an inert gas is bubbled through a soln. of known strength and vol. a satd. soln. is not necessary. this quantity is shown to be proportional to the initial conc. of the soln. the validity of the laws of dalton and henry over a range of concs. was tested for systems consisting of volatil solute and solvent by means of this relation. at 15°, cl2 in ccl4, 65, 75, 90 and 99.84% aq. acoh, and br2 in h2o, 25 and 90% aq. acoh showed fairly constant solubility coeffs., for different concs. cl2 in h2o did not, pointing to the equil. cl2 + h2o .dblarw. hclo + hcl.br2 and hbr were shown to combine in increasing amounts as the conc. of acoh in h2o is increased. hcl and cl2 do not combine appreciably in either glacial acoh or ac2o.查看更多
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催化精制汽油带催化剂(磺化钛氰钴)? 是的,停掉一段时间活化剂会好的 查看更多
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我有一个疑问,是关于联轴器的? 问题解决了,经过断开联轴器单试电机和清理过滤器以后泵的电流比较稳定了,现在是怀疑过滤器,不过据现场说,过滤器比较干净。查看更多
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动火安全措施? 估计是你们的工作人员抱有侥幸心理吧,作业完没有对现场进行安全确认就收工啦。 查看更多
立管上的膨胀节形式? 专门有一种小拉杆三向补偿器,不过我查的样本可都得1000mm以上。查看更多
气提法尿素产品质量? 你们超产24%, 但只是部分设备进行了放大,缺乏规范的设计计算 ,工艺上存在问题在所难免.比如汽提塔能力不够的话,或低压冷凝器热负荷不够,低压会超压的,消耗也会上去的,又比如,若高压喷射泵能力不够,或高洗器偏小,带液\超压也难免,蒸发水份超标就更不好说了,这不是 二氧化碳气提工艺受自身工艺影响,产品质量难以达到水溶液优级品水平 问题,而是强行超产的问题,不但仅仅影响工艺,长此下去而且设备也会搞坏.查看更多
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浓硝酸自吸泵? 上海海鄂泵阀有限公司 联系电话:021-54160744查看更多
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MVR技术交流贴? 影响能耗的因素很多,比如物料成分、蒸发形式、设备规模等等,通常蒸氯化铵的水能耗是最高,沸点升高值达 ... 我们主要是里面的有机物容易富集。。导致运行一段时间后蒸发量就起不来了。。。 查看更多
简介
职业:江苏威名石化有限公司 - 工艺技术员
学校:广东化工制药职业技术学院 - 化妆品系
地区:广东省
个人简介:所谓爱国心,是指你身为这个国家的国民,对于这个国家,应当比对其他一切的国家感情更深厚。查看更多
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