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求高手幫忙改一下英文摘要
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本人畢業(yè)在即，由于英語實在是太差了，求高手幫忙改一下英文摘要 跪求各位了 https://d.namipan.com/d/0654ff45 ... 8fa4845a5f3e03d0000 具體內容： 脫硫灰是燃煤和冶金行業(yè)煙氣脫硫的副產物，任意堆放脫硫灰不僅占用大量土地，還會對環(huán)境造成嚴重的二次污染，而且給生產企業(yè)帶來很大的經濟負擔；現(xiàn)代鍋爐燃燒均采用磨細的煤粉為燃料，巨大的粉煤灰排放量占用大量耕地，污染環(huán)境，危害人們的生存環(huán)境，制約國民經濟的可持續(xù)發(fā)展。我國硫資源短缺、鋁土礦資源有限，本研究利用脫硫灰和粉煤灰制取硫酸和提取氧化鋁，不僅改善了人們的生活環(huán)境，而且能回收有用資源，滿足工業(yè)化需求，緩解資源短缺的現(xiàn)狀，達到變廢為寶的目的。 本研究的主要內容包括：(1)利用XRD、DSC、SEM、EDS等方法研究脫硫灰的物化特性、礦物組成以及微觀形貌；(2)分析脫硫灰制硫酸-粉煤灰提取氧化鋁過程的反應熱力學，判斷化學反應進行的可能性、先后順序，反應的平衡條件及最終反應產物；(3)探討焦炭摻量、粉煤灰摻量、煅燒溫度等對CaSO4的分解和鋁的浸提的影響；(4)確定最佳反應條件。 通過研究可以得出：(1)脫硫灰的主要化學成分是CaSO3、CaSO4、Ca(OH)2和CaCO3，并含有一定量的SiO2和Al2O3等，其主要礦物相為半水亞硫酸鈣、二水石膏、方解石、羥鈣石，以及少量氯化鈣，脫硫灰的顆粒形狀不規(guī)則，呈碎屑狀，粒度變化差異較大；(2)本研究的反應體系復雜，主反應在800°C時開始發(fā)生，當達到900°C以上時，隨著溫度的增加，該反應相對其他副反應更容易發(fā)生；(3)還原劑焦炭的加入可以明顯促進CaSO4的分解，但其摻入量并不是越多越好，而是有一個臨界值，高于此臨界值會抑制CaSO4的分解，粉煤灰中的Al2O3和SiO2會與CaSO4分解產生的CaO發(fā)生復雜的化學反應，在生成C12A7的同時生成多種含硫副產物，影響CaSO4的分解，粉煤灰摻量高時會降低鋁的浸提率，溫度越高越有利于CaSO4的分解和鋁的浸提，研究中影響因素的順序為溫度＞粉煤灰摻量＞焦炭摻量；(4)在協(xié)調CaSO4的分解率和鋁的浸提率之間平衡的情況下最佳實驗條件為1200°C，C/DF1=0.085，Ash/DF1=0.294。 研究表明，采用脫硫灰制取硫酸-粉煤灰提取氧化鋁可以達到較高的CaSO4分解率和鋁的浸提率，此方法處理脫硫灰和粉煤灰具有廣闊的應用前景。 好心人可以直接聯(lián)系我 QQ：27988143 [ Last edited by muyaqin on 2010-11-15 at 09:56 ] |
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2樓2010-11-15 11:00:39
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脫硫灰是燃煤和冶金行業(yè)煙氣脫硫的副產物，任意堆放脫硫灰不僅占用大量土地，還會對環(huán)境造成嚴重的二次污染，而且給生產企業(yè)帶來很大的經濟負擔；現(xiàn)代鍋爐燃燒均采用磨細的煤粉為燃料，巨大的粉煤灰排放量占用大量耕地，污染環(huán)境，危害人們的生存環(huán)境，制約國民經濟的可持續(xù)發(fā)展。我國硫資源短缺、鋁土礦資源有限，本研究利用脫硫灰和粉煤灰制取硫酸和提取氧化鋁，不僅改善了人們的生活環(huán)境，而且能回收有用資源，滿足工業(yè)化需求，緩解資源短缺的現(xiàn)狀，達到變廢為寶的目的。 Desulfurization ash is by-products produced by flue gas desulfurization in coal-firing and metallurgical industries.Arbitrarily stacked desulfurization ash can occupy much of the land , cause serious secondary pollution, and bring great economic burden for companies.By adopting grinding thin coal as fuel ,modern boilers produce huge fly ash emissions,which not only cause greatly endanger our living environment but also enormously constrain the Sustainable development of national economy.Considering our country is in short of sulphur and bauxite resources,in this paper desulphurization ash and fly ash are used to produce Sulfuric acid and alumina,which not only improved the people's living environment, but also recycle useful resource to satisfy industrialization demand, alleviate resource shortage, and reach reutilization purpose. 先給你翻譯一段看看吧,如果還可以的話再翻譯其他的. |
3樓2010-11-15 13:19:53
4樓2010-11-15 13:23:13
5樓2010-11-15 14:10:03
| Desulfurization ash is by-products of flue gas desulfurization in coal-combustion and metallurgical industries. Arbitrarily stacking of the ash could result in plentiful of land occupation, serious secondary pollution and economic burden to the companies. With grinding thin coal as fuel, modern boilers produce huge fly ash emissions, which not only threatens our living environment but also limit the sustainable development of national economy. In this paper, desulphurization ash and fly ash are utilized to produce Sulfuric acid and alumina due to the scarce of sulphur and bauxite resources in china. Such approach could either promote the improvement of the people's living environment and alleviate the status of resource shortage, or satisfy industrialization demand and high efficiently utilize resources by recycling of useful resources. |
6樓2010-11-15 14:45:32
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本研究的主要內容包括：(1)利用XRD、DSC、SEM、EDS等方法研究脫硫灰的物化特性、礦物組成以及微觀形貌；(2)分析脫硫灰制硫酸-粉煤灰提取氧化鋁過程的反應熱力學，判斷化學反應進行的可能性、先后順序，反應的平衡條件及最終反應產物；(3)探討焦炭摻量、粉煤灰摻量、煅燒溫度等對CaSO4的分解和鋁的浸提的影響；(4)確定最佳反應條件。 This paper is focused on  1) Physical and chemical characteristics,mineral composition and microstructure of the desulfurization ash were studied with methods of XRD、DSC、SEM、EDS etc. (2) The process of producing sulfuric acid and alumina from desulfurization ash and fly ash respectively is studied on the basis of thermodynamics analysis, and the possibility,order,equilibrium condition and final products of the chemical reactions were all studied in this paper.(3) In addition to the mixing amounts of coke and fly ash ,the calcination temperature on the ecomposition of CaSO4 and the leaching of aluminium is also investigated in this paper.(4) The optimum reaction conditions were determined in the end. |
7樓2010-11-15 16:09:00
前兩段
muyaqin(金幣+5, 翻譯EPI+1): 2010-11-15 16:47:15
|
Desulfurization ash is by-products produced by flue gas desulfurization in coal-firing and metallurgical industries.Arbitrarily stacked desulfurization ash can occupy much of the land , cause serious secondary pollution, and bring great economic burden for companies.By adopting grinding thin coal as fuel ,modern boilers produce huge fly ash emissions,which not only greatly endanger our living environment but also enormously constrain the Sustainable development of national economy.Considering our country is in short of sulphur and bauxite resources,in this paper desulphurization ash and fly ash are used to produce Sulfuric acid and alumina,which not only improved the people's living environment, but also recycle useful resource to satisfy industrialization demand, alleviate resource shortage, and reach reutilization purpose. This paper is focused on 1) Physical and chemical characteristics,mineral composition and microstructure of the desulfurization ash were studied with methods of XRD、DSC、SEM、EDS etc. (2) The process of producing sulfuric acid and alumina from desulfurization ash and fly ash respectively is studied on the basis of thermodynamics analysis, and the possibility,order,equilibrium condition and final products of the chemical reactions were all studied in this paper.(3) In addition to the mixing amounts of coke and fly ash ,the calcination temperature on the ecomposition of CaSO4 and the leaching of aluminium is also investigated in this paper.(4) The optimum reaction conditions were determined in the end. |
8樓2010-11-15 16:11:10
米有辦法呀9樓2010-11-15 16:40:37
我是新手啦，米有那么多金幣啦10樓2010-11-15 16:43:20
11樓2010-11-15 16:45:31
|
通過研究可以得出：(1)脫硫灰的主要化學成分是CaSO3、CaSO4、Ca(OH)2和CaCO3，并含有一定量的SiO2和Al2O3等，其主要礦物相為半水亞硫酸鈣、二水石膏、方解石、羥鈣石，以及少量氯化鈣，脫硫灰的顆粒形狀不規(guī)則，呈碎屑狀，粒度變化差異較大；(2)本研究的反應體系復雜，主反應在800°C時開始發(fā)生，當達到900°C以上時，隨著溫度的增加，該反應相對其他副反應更容易發(fā)生；(3)還原劑焦炭的加入可以明顯促進CaSO4的分解，但其摻入量并不是越多越好，而是有一個臨界值，高于此臨界值會抑制CaSO4的分解，粉煤灰中的Al2O3和SiO2會與CaSO4分解產生的CaO發(fā)生復雜的化學反應，在生成C12A7的同時生成多種含硫副產物，影響CaSO4的分解，粉煤灰摻量高時會降低鋁的浸提率，溫度越高越有利于CaSO4的分解和鋁的浸提，研究中影響因素的順序為溫度＞粉煤灰摻量＞焦炭摻量；(4)在協(xié)調CaSO4的分解率和鋁的浸提率之間平衡的情況下最佳實驗條件為1200°C，C/DF1=0.085，Ash/DF1=0.294。 Four conclusions can be drawn from this study: (1)With a certain quantity of SiO2 and Al2O3,the main chemical compositions of the desulfurization ash include CaSO3,CaSO4,Ca(OH)2 and CaCO3 etc.Half water calcium sulfate,dehydrate gypsum,calcite and portlandite are the main mineral phases in the the desulfurization ash,and some calcium chloride is also found in the system.The grains in the desulfurization ash occur as clastic particles,with irregular particle shapes and different particle sizes .(2) The reaction system studied in this paper possess great complexity due to the appearance of some side reactions.The main reaction is triggered at 800°C,and with the rise of temperature the main reaction is more and more likely to occur.when the temperature rise to 900°C,compared with other side reactions the main reaction is more likely to occur and become the dominant reaction.(3)With the resistant coke adding to the system,the decomposition of CaSO4 is apparently accelerated,while there is a optimal amount of coke when the mixing amounts exceed the optimal amount it will bring the opposite effect.The Al2O3 and SiO2 react with the CaO from the decomposition of CaSO4 and trigger complicated reaction,producing C12A7 and other sulfur-containing by-products,which affect the decomposition of CaSO4 .High fly ash content will lower the producing of aluminium,while the rising of the temperature the is good for the decomposition of CaSO4 and the producing of aluminium.According to the importance of each influencing factor,the can be ordered as follows:temperature>fly ash content>coke content.(4)Considering the decomposition of CaSO4 and the producing of aluminium,the optimum conditions of the system is established as follows :1200°C,C/DF1=0.085，Ash/DF1=0.294. 研究表明，采用脫硫灰制取硫酸-粉煤灰提取氧化鋁可以達到較高的CaSO4分解率和鋁的浸提率，此方法處理脫硫灰和粉煤灰具有廣闊的應用前景。 The study in this paper shows that using desulphurization ash and fly ash to produce alumina can accomplish high decomposition rate of CaSO4 and extraction rate of aluminium,which reflect its vast application prospects in the disposition of desulphurization ash and fly ash. |
12樓2010-11-16 15:45:22
13樓2010-11-16 16:25:17
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