【正文】 機(jī)械通風(fēng)冷卻塔冷產(chǎn)高，冷幅?。袂驕囟扰c出塔水溫之差），投資低，尤其適用于高溫、高濕、建筑場地狹窄、通風(fēng)條件不良的地區(qū)，但耗電及維護(hù)工作量大。該系統(tǒng)運(yùn)行時，循環(huán)冷卻水泵自循環(huán)水池抽水送至各生產(chǎn)車間供生產(chǎn)設(shè)備冷卻用水，冷卻過設(shè)備的水（循環(huán)回水）利用循環(huán)水泵的余壓送至冷卻構(gòu)筑物，冷卻后的水流至循環(huán)水池，供循環(huán)水泵繼續(xù)循環(huán)使用。本工程是利用公司現(xiàn)有水泥生產(chǎn)線的窯頭、。2）發(fā)電系統(tǒng)汽水管路考慮了將窯頭余熱鍋爐從發(fā)電系統(tǒng)中解列出來的措施。序號設(shè)備名稱及型號數(shù)量主要技術(shù)參數(shù)、性能、指標(biāo)備注1螺旋輸送機(jī)1能力： 56 m3/h1FU鏈?zhǔn)捷斔蜋C(jī)1能力： 56 m3/h2剛性葉輪給料機(jī)4規(guī)格： φ300300輸送量： 23 m3/h 水泥廠工藝系統(tǒng)改造由于余熱鍋爐設(shè)置于水泥生產(chǎn)最主要的管道上，一旦發(fā)生事故（如鍋爐爆管、粉塵堵塞等）將影響水泥生產(chǎn)的正常運(yùn)行。2）窯頭余熱鍋爐及干擾式分離器AQC窯頭余熱鍋爐及干擾式分離器均布置于水泥生產(chǎn)線窯頭廠房旁，采用露天布置。 汽輪發(fā)電機(jī)房占地為2115m，雙層布置，177。 主機(jī)設(shè)備序號設(shè)備名稱及型號數(shù)量主要技術(shù)參數(shù)、性能、指標(biāo)11型號： －額定功率： 額定轉(zhuǎn)速： 3000r/min進(jìn)汽壓力： 進(jìn)汽溫度： 310℃額定汽耗： ≤排汽壓力： 21型號： －2額定功率： 額定轉(zhuǎn)速： 3000r/min出線電壓： 10500V3窯尾余熱鍋爐1入口廢氣參數(shù)：170000m3/h(標(biāo)況)—330℃入口廢氣含塵濃度：75g/m3(標(biāo)況)出口廢氣溫度： 220℃主汽參數(shù)： ——310℃(過熱)給水參數(shù)： —180℃—鍋爐總漏風(fēng)： ≤3%置方式： 露天4窯頭余熱鍋爐1入口廢氣參數(shù)：120000m3/h(標(biāo)況)—360℃入口廢氣含塵濃度： 15g/m3(標(biāo)況)出口廢氣溫度： ～100℃鍋爐總漏風(fēng)： ≤2%I段主汽參數(shù)：——340℃(過熱)I段給水參數(shù)： —180℃—II段給水參數(shù)：—42℃—II段出水參數(shù)：—180℃—布置方式： 露天5 除氧器及水箱1除氧能力： 25t/h工作壓力： 工作溫度： 42℃除氧水箱： 10m36鍋爐給水泵(一用一備)2流量： 25t/h揚(yáng)程： 270m功率： 45kW7干擾式分離器1入口廢氣參數(shù)： 120000m3/h(標(biāo)況)—360℃入口廢氣含塵濃度：30g/m3(標(biāo)況)出口廢氣含塵濃度：15g/m3(標(biāo)況) 主要技術(shù)參數(shù)發(fā)電裝機(jī)：平均發(fā)電功率：4169kW年運(yùn)行：7200h年發(fā)電量：3001104kW4） 余熱鍋爐均采用立式鍋爐，解決余熱鍋爐漏風(fēng)、磨損、堵灰等問題并減少占地面積，提高余熱回收率。該鍋爐采用兩段受熱面，最大限度地利用了窯頭熟料冷卻機(jī)廢氣余熱。－340℃過熱蒸汽。為減輕鍋爐磨損，在窯頭余熱鍋爐前設(shè)置了干擾式分離器。經(jīng)比較方案一的發(fā)電功率最高，可達(dá)到4169kW。2）本工程實(shí)施后電站不應(yīng)向電網(wǎng)返送電；3）余熱電站的建設(shè)及生產(chǎn)運(yùn)行應(yīng)不影響水泥生產(chǎn)系統(tǒng)的生產(chǎn)運(yùn)行；4）余熱電站的系統(tǒng)及設(shè)備應(yīng)以成熟可靠、技術(shù)先進(jìn)、節(jié)省投資、提高效益為原則，并考慮目前國內(nèi)余熱發(fā)電設(shè)備實(shí)際技術(shù)水平。h：一期電站平均發(fā)電功率：3885kW一期電站站用電計(jì)算負(fù)荷：310kW二期平均發(fā)電功率：4169kW二期站用電計(jì)算負(fù)荷：325kW當(dāng)兩座電站及兩條水泥生產(chǎn)線正常運(yùn)行時，需外購電負(fù)荷平均為：~16643kW 熱力系統(tǒng)及裝機(jī)方案 熱力系統(tǒng)及裝機(jī)方案設(shè)計(jì)原則 根據(jù)一期水泥熟料生產(chǎn)線廢氣可利用的余熱量，推測二期生產(chǎn)線廢氣余熱量為：a．二期2500t/d水泥生產(chǎn)線窯頭熟料冷卻機(jī)中部取風(fēng)廢氣余熱量為120000m3/h（標(biāo)況）－360℃↓100℃，具有約4056104kJ/h的熱量。根據(jù)條件變化，結(jié)合原綠化設(shè)計(jì)方案，本工程因地制宜地進(jìn)行綠化設(shè)計(jì)。雨水經(jīng)匯集后最終排入水泥生產(chǎn)線雨水排除系統(tǒng)，將雨水排出廠外。電站主廠房、。本工程包括：主廠房（包括汽輪發(fā)電機(jī)房、主控配電樓）、循環(huán)水泵站及冷卻塔、化學(xué)水處理、窯頭余熱鍋爐、窯尾余熱鍋爐等車間。場區(qū)內(nèi)地質(zhì)構(gòu)造簡單，巖性單一，屬合川向斜中段東翼，為單斜巖層，主要以紫紅色泥巖、頁巖為主，夾少量砂巖，未見有不良地質(zhì)現(xiàn)象。35kV電源架空引自合川東津沱變電站。綜上所述，本項(xiàng)目做到了余熱回收利用、節(jié)約能源、改善環(huán)境，符合國家提倡的方針政策，具有較好的社會效益與一定的經(jīng)濟(jì)效益，符合可持續(xù)發(fā)展戰(zhàn)略思想，是一個理想的投資項(xiàng)目。汽機(jī)循環(huán)冷卻水設(shè)施采用組合逆流式機(jī)械通風(fēng)冷塔；電站的控制采用DCS計(jì)算機(jī)控制系統(tǒng)。3) 生產(chǎn)設(shè)備原則上采用國產(chǎn)設(shè)備，但部分關(guān)鍵控制設(shè)備和儀表考慮國內(nèi)采購的國外技術(shù)產(chǎn)品（含組裝、原裝）。 資金籌措本工程的項(xiàng)目總投資3014萬元，本項(xiàng)目所需資金全部自籌。年平均氣溫℃極端最高氣溫℃極端最低氣溫℃年平均相對濕度85％年平均降雨量1121mm年平均氣壓年平均風(fēng)速年最大風(fēng)速34m/s全年主導(dǎo)風(fēng)向N年平均氣溫℃極端最高氣溫℃極端最低氣溫℃年平均相對濕度85％據(jù)《建筑抗震設(shè)計(jì)規(guī)范》（GB500112001），本場地建筑物抗震設(shè)防烈度為6度。工程地質(zhì)條件較好，主要地層地基承載力特征值一般在300kPa左右。我公司二期2500t/d水泥熟料生產(chǎn)線低溫余熱電站工程（ MW）一期余熱電站已經(jīng)考慮到了為二期電站預(yù)留擴(kuò)建端的措施。 同時由于汽輪發(fā)電機(jī)機(jī)組及鍋爐設(shè)備效率的提升。2003年4月，TCDRI設(shè)計(jì)的全部國產(chǎn)裝備的純低溫余熱電站在上海萬安集團(tuán)金山水泥廠1200t/d四級預(yù)熱器水泥熟料生產(chǎn)線正式投入運(yùn)行，該電站裝機(jī)2500kW，正常發(fā)電功率為1900~2100kW，噸熟料發(fā)電量達(dá)38~40kWh，接近同類電站的國際先進(jìn)水平。此項(xiàng)技術(shù)的應(yīng)用到八十年代初期達(dá)到了高潮，尤其是日本，此項(xiàng)技術(shù)較為成熟，不但在本國二十幾條預(yù)分解窯水泥生產(chǎn)線上得到應(yīng)用，并且出口到臺灣、韓國等一些國家和地區(qū)。　　發(fā)展循環(huán)經(jīng)濟(jì)，要在五個環(huán)節(jié)加快推進(jìn)循環(huán)經(jīng)濟(jì)發(fā)展。2004~2005年，國家發(fā)展改革委多次召開全國循環(huán)經(jīng)濟(jì)工作會議?！豆芾磙k法》中規(guī)定：申報資源綜合利用認(rèn)定的綜合利用發(fā)電單位，還應(yīng)具備以下條件：……按照國家審批或核準(zhǔn)權(quán)限規(guī)定，經(jīng)政府主管部門核準(zhǔn)（審批）建設(shè)的電站……；以工業(yè)生產(chǎn)過程中產(chǎn)生的可利用的熱能及壓差發(fā)電的企業(yè)（分廠、車間），應(yīng)根據(jù)產(chǎn)生余熱、余壓的品質(zhì)和余熱量或生產(chǎn)工藝耗氣量和可利用的工質(zhì)參數(shù)確定工業(yè)余熱、余壓電廠的裝機(jī)容量。隨著我國人口的不斷增加和經(jīng)濟(jì)的快速發(fā)展，資源相對不足的矛盾將日益突出，尋找新的資源或可再生資源，以及合理的綜合利用現(xiàn)有的寶貴資源將是我國今后如何確保經(jīng)濟(jì)可持續(xù)發(fā)展的關(guān)鍵所在。現(xiàn)營銷網(wǎng)絡(luò)在重慶、成都、南充、合川、遂寧、廣安等地區(qū)設(shè)有辦事處。企業(yè)占地300多畝，總資產(chǎn)3億元，職工200余人，其中大中專畢業(yè)生占80%，工程技術(shù)人員100多人。我公司成立于2003年9月，注冊資金7160萬元。Lesson37 The Olympic Games 奧林匹克運(yùn)動會s school friends will be waiting for her on the English coast. Among them will be Erna39。Lesson36 Across the Channel 橫渡海峽Rov Trenton used to drive a taxi. A short while ago, however, he became a busdriver and he was not regretted it. He is finding his new work far more exciting. When he was driving along Catford Street recently, he saw two thieves rush out of a shop and run towards a waiting car. One of them was carrying a bag full of money. Roy acted quickly and drove the bus straight at the thieves. The one with the money got such a fright that he dropped the bag. As the thieves were trying to get away in their car, Roy drove his bus into the back of it. While the battered car was moving away, Roy stopped his bus and telephoned the police. The thieves39。Ted Robinson has been worried all the week. Last Tuesday he received a letterNearly a week passed before the girl was able to explain what had happened to her. One afternoon she set out from the coast in a small boat and was caught in a storm. Towards evening, the boat struck a rock and the girl jumped into the sea. Then she swam to the shore after spending the whole night in the water. During that time she covered a distance of eight miles. Early next morning, she saw a light ahead. She knew she was near the shore because the light was high up on the cliffs. On arriving at the shore, the girl struggled up the cliff towards the light she had seen. That was all she remembered. When she woke up a day later, she found herself in hospital. her mother a free dress once a week !Lesson31 Success story 成功者的故事The Wayle is a small river that cuts across the park near my home. I like sitting by the Wayle on fine afternoons. It was warm last Sunday, so I went and sat on the river bank as usual. Some children were playing games on the bank and there were some people rowing on the river. Suddenly, one of the children kicked a ball very hard and it went towards a passing boat. Some people on the bank called out to the man in the boat, but he did not hear them. The ball struck him so hard that he nearly fell into the water. I turned to look at the children, but there weren39。 is a small Swiss aeroplane called a 39。Jasper White is one of those rare people who believes in ancient myths. He has just bought a new house in the city, but ever since he moved in, he has had trouble with motorists. when he returns home at night, he always finds that someone has parked a car outside his gate. Because of this, he has not been able to get his own car into his garage even once. Jasper has put up39。Late in the afternoon, the boys put up their tent in the middle of a field. As soon as this was done, they cooked a meal over an open fire. They w