亚洲在线视频中文字幕人妻熟女,av狼福利在线观看,亚洲乱熟女一区二区三区四

版塊導航: 正在加載中...

客戶端APP下載

論文輔導

調(diào)劑小程序

登錄注冊

應《網(wǎng)絡安全法》要求，自2017年10月1日起，未進行實名認證將不得使用互聯(lián)網(wǎng)跟帖服務。為保障您的帳號能夠正常使用，請盡快對帳號進行手機號驗證，感謝您的理解與支持！

24小時熱門版塊排行榜

北京石油化工學院2026年研究生招生接收調(diào)劑公告

返回列表

本帖產(chǎn)生 1 個翻譯EPI ，點擊這里進行查看

manin8769

mermaid332(金幣+1): 2010-04-18 14:05

11樓2010-04-18 03:43:24

已閱回復此樓關注TA 給TA發(fā)消息送TA紅花 TA的回帖

shuwenying

鐵蟲 (小有名氣)

應助: 0 (幼兒園)
金幣: 180.4
帖子: 73
在線: 5分鐘
蟲號: 166085
注冊: 2006-01-13
專業(yè): 腫瘤化學藥物治療

★ ★ ★ ★
mermaid332(金幣+20): 謝謝幫忙 2010-04-18 14:06
sirljz(金幣+4):謝謝交流 2010-04-19 15:53

Preparation of novel catalyst and the research of new technology for gasoline hydrodesulfurization

Abstract: A novel multi-functional catalyst was prepared and used for hydrodesulphurization of FCC gasoline. The results showed that the catalyst with Mo-Co-Ni multi-metal components and additives increaseincreased the selectivity of hydrodesulphurization and reducereduced the amount of the low olefin. Dual purpose, hydrodesulphurization and reduction of octane number loss, were achieved. Sulfur content in FCC gasoline decreased from 1200 μg/g to 115 μg/g and olefin content fallfell to 20.5 v% from 44.2 v%. The RON loss iswas 0.5 units. The stability test for 2000 hours indicated that the catalyst is very stable. The catalyst was characterized with strong adaptability concluded from the adaptability test for different raw materials.請注意一下時態(tài)一致
Key words: desulfurization; olefin; catalyst; octane number
1. Introduction
Harmful substances such as sulphides and CxHy came去掉這個詞 from automobile exhaust emissions would have刪除 caused改成cause serious pollutions to the environment. In order to reduce the pollution caused by automobile exhaust, the gasoline was cleaning是不是想表達這個意思：石油都經(jīng)過了凈化處理。應說成：the gasoline undergoes purification procedures to reudce pollution in recent years. Olefins, aromatics and sulfides were thought as the harmful substances, so their contents in gasoline were limited repeatedly 1-3.太chiglish了，改成Olefins ... are major pollutent in gasoline, hence numerous researches have focused on reducing the amount of these compounds. Each standard about the contents are shown in Table 1.The standard for the content of the compounds are presented in Table1. Every country has been doing their best to reduce the harmful substances amount.Efforts to reduce the content of these compounds are taking place at all levels of governments worldwide.

這篇文章太讓人頭痛了。首先，不要用太過Chiglish的表達；其次，別y用翻譯工具��！

贊一下(1人)

回復此樓

12樓2010-04-18 09:50:07

已閱回復此樓關注TA 給TA發(fā)消息送TA紅花 TA的回帖

shuwenying

鐵蟲 (小有名氣)

應助: 0 (幼兒園)
金幣: 180.4
帖子: 73
在線: 5分鐘
蟲號: 166085
注冊: 2006-01-13
專業(yè): 腫瘤化學藥物治療

★ ★ ★
mermaid332(金幣+20): 謝謝幫忙，能繼續(xù)么，水平比我高多了！ 2010-04-18 14:07
sirljz(金幣+3):謝謝交流 2010-04-19 15:53

In China, more than 90% mass fraction of sulfur and more than 98% volume fraction of the olefins in motor gasoline are from the FCC (Fluid Catalytic Cracking) gasoline 4-6.改成In China, in the motro gasoline, 90% of sulfer (in weight) and 98% of olefins (in volume) are from FCC.. gasoline Conventional hydrodesulphurization (HDS) method is effective to remove organic sulfur form FCC gasoline, but the alkenes hydrogenation easily generate low-octane saturated group that results in a sharp decline of the octane number. New HDS method is that the FCC gasoline was divided into LCN (Light fraction) and HCN (Heavy fraction), HCN was desulfurized and hydrogenated.這句話結(jié)構(gòu)錯誤，沒有連詞就帶了好幾個復句 The method largely avoided the hydrogenation of the high-octane light olefin in LCN. However, in HDS process, the high-octane olefin in HCN was saturated which resulted inthe loss of the octane number. Therefore, it is important to develop high selective HDS catalyst for reducing to reduce saturation in the hydrogenation process of olefins to control the octane number loss. The foreign new technology of FCC gasoline hydrodesulphurization, such as the technology from Prime-G & Prime-G+(IFP), SCANFining & OCTGAIN (ExxonMobil) and ISAL (UOP), has poor adaptability to the FCC gasoline of high-sulfur (1000~1500 μg/g), high olefins (40~55 v%), low aromatics (13~20 v%) in China. It is necessary to develop new olefin FCC gasoline hydrodesulphurization technology and new catalyst.
In this paper, it is the emphases to reduce the octane number loss in the process of FCC gasoline hydrodesulphurization.This study focused on reducing the amount of octane in the process of FCC gasoline hydrodesulphurization. The components in catalyst were determined. Catalyst performance and stability were studied in the hydrodesulphurization of FCC gasoline. The hydrogenation process conditions were optimized.

贊一下(1人)

回復此樓

13樓2010-04-18 10:03:47

已閱回復此樓關注TA 給TA發(fā)消息送TA紅花 TA的回帖

accure

金蟲 (正式寫手)

應助: 0 (幼兒園)
金幣: 577.9
散金: 6
紅花: 1
帖子: 417
在線: 49.5小時
蟲號: 820668
注冊: 2009-08-02
專業(yè): 動物醫(yī)學

mermaid332(金幣+1): 2010-04-19 08:17

不好意思，我?guī)筒簧厦Γ?

贊一下

回復此樓

14樓2010-04-18 22:45:16

已閱回復此樓關注TA 給TA發(fā)消息送TA紅花 TA的回帖

kangfulike

無蟲 (職業(yè)作家)

應助: 14 (小學生)
金幣: -68
散金: 1227
紅花: 2
沙發(fā): 1
帖子: 4117
在線: 82.6小時
蟲號: 911591
注冊: 2009-11-24
專業(yè): 光學

mermaid332(金幣+1): 2010-04-19 08:17

這個文章可以在網(wǎng)上隨便發(fā)嘛

贊一下

回復此樓

15樓2010-04-18 23:00:55

已閱回復此樓關注TA 給TA發(fā)消息送TA紅花 TA的回帖

anuoking23

鐵桿木蟲 (正式寫手)

應助: 0 (幼兒園)
金幣: 6589.1
帖子: 560
在線: 96.6小時
蟲號: 524922
注冊: 2008-03-14
專業(yè): 有機高分子功能材料

mermaid332(金幣+1): 2010-04-19 08:17

太長了，懶得看，幫頂頂吧~~~~

贊一下

回復此樓

16樓2010-04-18 23:06:59

已閱回復此樓關注TA 給TA發(fā)消息送TA紅花 TA的回帖

anuoking23

鐵桿木蟲 (正式寫手)

應助: 0 (幼兒園)
金幣: 6589.1
帖子: 560
在線: 96.6小時
蟲號: 524922
注冊: 2008-03-14
專業(yè): 有機高分子功能材料

mermaid332(金幣+1): 2010-04-19 08:17

話說有軟件可以幫忙參考一下的，如stylewrite

贊一下

回復此樓

17樓2010-04-18 23:07:53

已閱回復此樓關注TA 給TA發(fā)消息送TA紅花 TA的回帖

tomoson

鐵桿木蟲 (著名寫手)

應助: 1 (幼兒園)
金幣: 7541.8
散金: 12
紅花: 3
帖子: 2825
在線: 235.8小時
蟲號: 65541
注冊: 2005-04-25
專業(yè): 免疫學研究新技術與新方法

mermaid332(金幣+1): 2010-04-19 08:17

呵呵都四牛人哩

回復此樓

18樓2010-04-18 23:18:31

已閱回復此樓關注TA 給TA發(fā)消息送TA紅花 TA的回帖

holland3

鐵桿木蟲 (著名寫手)

應助: 0 (幼兒園)
金幣: 9537.8
紅花: 1
帖子: 1045
在線: 47.1小時
蟲號: 941787
注冊: 2010-01-13
性別: GG
專業(yè): 高分子材料與環(huán)境

mermaid332(金幣+1):沒有圖亞 2010-04-19 08:18

引用回帖:

Originally posted by guoxiaojing at 2010-04-18 00:11:32:
這個文章可以在網(wǎng)上隨便發(fā)嘛

就是啊，不怕有人拿走改改替樓主發(fā)表了？

贊一下

回復此樓

環(huán)境-汽車-燃料電池-高分子-化工-環(huán)境

19樓2010-04-18 23:20:47

已閱回復此樓關注TA 給TA發(fā)消息送TA紅花 TA的回帖

66451093

銀蟲 (小有名氣)

應助: 0 (幼兒園)
金幣: 243.7
帖子: 97
在線: 9.4小時
蟲號: 867148
注冊: 2009-10-10

★ ★ ★
mermaid332(金幣+10):xiexie 2010-04-19 08:25
sirljz(金幣+3):謝謝交流 2010-04-19 15:54

Preparation of novel catalyst and research of new technology for gasoline hydrodesulfurization

Abstract: A novel multi-functional catalyst is prepared and used for hydrodesulphurization of FCC gasoline. The results show that the catalyst with Mo-Co-Ni multi-metal components and additives increase the selectivity of hydrodesulphurization and reduce he amount of the low olefin. Dual purpose, hydrodesulphurization and reduction of octane number loss, are achieved. Sulfur content in FCC gasoline decreases from 1200 μg/g to 115 μg/g and olefin content falls to 20.5 v% from 44.2 v%. The RON loss is 0.5 units. The stability test for 2000 hours indicates that the catalyst is very stable. The catalyst is characterized with strong adaptability concluded from the adaptability test for different raw materials.
Key words: desulfurization; olefin; catalyst; octane number
1. Introduction
Harmful substances such as sulphides and CxHy come from automobile exhaust emissions have caused serious pollutions to the environment. In order to reduce the pollution caused by automobile exhaust, the gasoline has been cleaner and cleaner in recent years. Olefins, aromatics and sulfides are thought as the harmful substances, so their contents in gasoline are limited repeatedly [1-3]. Each standard about the contents is shown in Table 1. Every country has been doing their best to reduce the harmful substances amount.
In China, more than 90% mass fraction of sulfur and more than 98% volume fraction of the olefins in motor gasoline are from the FCC (Fluid Catalytic Cracking) gasoline [4-6]. Conventional hydrodesulphurization (HDS) method is effective to remove organic sulfur form FCC gasoline, but the alkenes hydrogenation easily generate low-octane saturated group that results in a sharp decline of the octane number. New HDS method is that the FCC gasoline is divided into LCN (Light fraction) and HCN (Heavy fraction), HCN is desulfurized and hydrogenated. The method largely avoids the hydrogenation of the high-octane light olefin in LCN. However, in HDS’ process, the high-octane olefin in HCN is saturated which results in the loss of the octane number. Therefore, it is important to develop high selective HDS catalyst for reducing saturation in the hydrogenation process of olefins to control the octane number loss. The foreign new technology of FCC gasoline hydrodesulphurization, such as the technology from Prime-G & Prime-G+(IFP), SCANFining & OCTGAIN (ExxonMobil) and ISAL (UOP), has poor adaptability to the FCC gasoline of high-sulfur (1000~1500 μg/g), high olefins (40~55 v%), low aromatics (13~20 v%) in China. It is necessary to develop new olefin FCC gasoline hydrodesulphurization technology and new catalyst.
In this paper, it is the emphatic to reduce the octane number loss in the process of FCC gasoline hydrodesulphurization. The components in catalyst are determined. Catalyst performance and stability are studied in the hydrodesulphurization of FCC gasoline. The hydrogenation process conditions are optimized.
我也就光改了改時態(tài)，還有較少的時態(tài)和語法錯誤。

贊一下(1人)

回復此樓

20樓2010-04-19 07:50:56

已閱回復此樓關注TA 給TA發(fā)消息送TA紅花 TA的回帖

相關版塊跳轉(zhuǎn) 我要訂閱樓主 mermaid332 的主題更新

返回列表

普通表情龍兔虎貓高級回復 (可上傳附件)

最具人氣熱帖推薦 [查看全部]		作者	回/看	最后發(fā)表

[考研] 調(diào)劑求院校招收 +4	鶴鯨鴿 2026-03-28	4/200	2026-03-28 13:38 by 唐沐兒
[考研] 求化學調(diào)劑 +4	wulanna 2026-03-28	4/200	2026-03-28 13:37 by 唐沐兒
[考研] 0856，材料與化工321分求調(diào)劑 +12	大饞小子 2026-03-27	13/650	2026-03-28 10:56 by self2008
[考研] 291求調(diào)劑 +6	HanBeiNingZC 2026-03-24	6/300	2026-03-28 07:55 by baoball
[考研] 求調(diào)劑 +8	張zz111 2026-03-27	9/450	2026-03-28 03:41 by fmesaito
[考研] 0703化學求調(diào)劑，各位老師看看我�。�！ +5	祁祺祺 2026-03-25	5/250	2026-03-27 21:44 by 東方豬豬
[考研] 一志愿211院校 344分東北農(nóng)業(yè)大學生物學學碩，求調(diào)劑 +5	丶風雪夜歸人丶 2026-03-26	8/400	2026-03-27 19:22 by 丶風雪夜歸人丶
[考研] 一志愿上海理工能源動力（085800）310分求調(diào)劑 +3	zhangmingc 2026-03-27	4/200	2026-03-27 19:01 by 給你你注意休息
[考研] 求調(diào)劑 +4	零八# 2026-03-27	4/200	2026-03-27 18:07 by yu221
[考研] 351求調(diào)劑 +4	麥克阿磊 2026-03-24	4/200	2026-03-27 00:32 by wxiongid
[考研] 327求調(diào)劑 +7	prayer13 2026-03-23	7/350	2026-03-26 20:48 by 不吃魚的貓
[考研] 生物學 296 求調(diào)劑 +4	朵朵- 2026-03-26	6/300	2026-03-26 19:01 by 不吃魚的貓
[考研] 271求調(diào)劑 +6	生如夏花… 2026-03-22	6/300	2026-03-26 16:48 by 張凱十八號
[考研] 尋找調(diào)劑 +5	倔強芒? 2026-03-21	8/400	2026-03-26 13:25 by 0906ljy
[考研] 318求調(diào)劑 +3	plum李子 2026-03-23	3/150	2026-03-25 09:42 by 霧散后相遇lc
[考研] 289材料與化工（085600）B區(qū)求調(diào)劑 +4	這么名字咋樣 2026-03-22	5/250	2026-03-25 08:20 by mx.yue
[考研] 調(diào)劑 +4	13853210211 2026-03-24	4/200	2026-03-24 19:44 by ms629
[考研] 292求調(diào)劑 +4	鵝鵝鵝額額額額?/a> 2026-03-24	4/200	2026-03-24 16:41 by peike
[考研] 080500求調(diào)劑 +3	zzzzfan 2026-03-24	3/150	2026-03-24 16:38 by barlinike
[考研] 336化工調(diào)劑 +4	王大坦1 2026-03-23	5/250	2026-03-23 18:32 by allen-yin