四氯化硅

The product qualities,safety,transportation,storage,useful deposition ratios,deposition rates,one pass conversions,deposition temperatures,electrical energy consumption and manufacturing costs are summarized for silane,dichlorosilane,trichlorosilane and tetrachloro silane method s.

对三氯氢硅法、四氯化硅法、二氯二氢硅法和硅烷法生产的多晶硅质量、安全性、运输和存贮的可行性、有用沉积比、沉积速率、一次转换率、生长温度、电耗和价格进行了对比；对还原或热分解使用的反应器即钟罩式反应器、流床反应器和自由空间反应器也进行了比较。

The annual production capacity of trichlorosilane is 60 thousand tons and the annual production capacity of silicon tetrachloride is 12 thousand tons.

公司年产6万吨三氯氢硅，1.2万吨四氯化硅的规模，三孚硅业为国内最大的三氯氢硅生产基地。

It is a private joint-stock enterprise of pruducing trichlorosilane, silicon tetrachloride, potassium hydroxide.

唐山三孚硅业有限公司成立于2006，是一家以生产三氯氢硅，四氯化硅，氢氧化钾为主的民营股份制企业。

Our company is one of the national technology standard framers about high pure tetrachloride silicon used in fiber and high pure tetrachloridesilicon used in semiconductor extension.

公司创建于一九九零年十月，是上海唯一专业生产高纯四氯化硅厂家，年产PPM级/700吨，年产PPB级/150吨，是全国最大的四氯化硅的生产基地。

However, commercial grade silicon tetrachloride contains impurities which increase the optical loss.

四氯化硅是生产石英通信光纤的主要原料，但粗四氯化硅中含有多种杂质，直接影响光纤的损耗特性。

The project is designed to produce 100,000t/a of production appliance and byproduce silicon tetrachloride and hydrogen .

生产规模为100000t/a的生产装置，副产四氯化硅和氢气，每生产1t 三氯氢硅可副产四氯化硅约220kg 、氢气约21ONm3 ，建设工期1年。

The standard sample of high pure silicon tetrachloride with certified value of 99.99 % was analyzed. The obtained average determination result was 99.857% after normalization treatment. The relative standard deviation was 0.03%.

对认定值为99.99%高纯四氯化硅标准样品分析，归一化法定量，得到该样品中四氯化硅的测定平均值为99.857%，相对标准偏差为0.03%。

Tetraallylsilane was synthesized by one-step approach through the reaction of silicon tetrachloride with the partially solvated Grignard reagents formed in situ from allyl bromide and magnesium in the mixed solvents of toluene and ether.

采用一步合成方式，将3-溴丙烯与金属镁在以甲苯和供电子溶剂构成的混合溶剂中进行反应，继而与四氯化硅反应，成功合成了四烯丙基硅烷，其产率在乙醚与3-溴丙烯的摩尔比为4(V甲苯/V乙醚=1·1)时达到极值，超过了91%。

The external diameter of a quartz liner is determined to be 36-46mm, the inner diameter to be 32-40mm and the length of the liner to be 1.45-1.85m for the process of PCVD. Parameters of a processing technology are that the high frequency power of a microwave resonator is controlled to be 6KW-15KW and the deposition temperature is 1080-1130 degree Celsius. The variety of mixed air flowing through the liner includes silicon tetrachloride vapor, germanium tetrachloride vapor, high-purity oxygen and Freon. The inside pressure of the liner is 10-15millibar. The air flow rate inside the liner is

取石英衬管的外径为36～46毫米、内径32～40毫米，衬管长度1.45～1.85米，进行PCVD加工；加工工艺的参数为：微波谐振腔的高频功率控制在6KW～15KW，沉积温度1080℃～1130℃，流经衬管管内混合气体的种类：四氯化硅蒸气、四氯化锗蒸气、高纯氧气、氟里昂，衬管的管内压力为10-15毫巴，管内气体流速为30-80米/秒，气体体积流量为4400SCCM-8800SCCM。

The enterprise can be formed as annual production of polycrystalline silicon 1.3 billion, High-purity silicon tetrachloride 1 thousand tons,φ6"—φ12" polishing flake 2.3 million flake, Silicon extension flake 500 thousand flake, SOI silicon Flake 400 thousand flake, all sorts of zone melting grinding silicon flake 3 million flake, High-purity metal and its compound products 100-150 T/year.

十一五&末期，该企业将形成年产多晶硅130吨、高纯四氯化硅1000吨、φ6&—φ12抛光片230万片、硅外延片50万片、 SOI 硅片40万片、各类区熔硅磨片300万片、高纯金属及其化合物产品100—150T/年的生产能力，并将与新兴硅业、乐山安森美等企业形成完整的硅产品产业链和高纯金属产业基地。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。