1、中英文資料 工業(yè)鍋爐節(jié)能 中英文資料外文翻譯文獻(xiàn) 專(zhuān)業(yè)英文資料專(zhuān)業(yè)英文資料 Boiler energy savingBoiler energy saving Industrial boiler energy saving technology related to many, what is the most important increase industrial furnace thermal utilization ratio of pot namely, increasing the thermal efficiency of the industrial boiler. This

2、section from burning, transportation line maintenance, new technology and new equipment and the application of the industrial boiler auxiliary equipment of energy saving, pot boiler water processing, etc and the industrial boiler room way of energy saving is discussed in this paper. 1. The furnace o

3、f industrial boiler furnace arch arch is very important. The role is to make arch furnace chamber of the mixture of gases and radiation and hot gas organization flow, to make the fuel and ignition and combustion when. Sua and at present industrial boiler with the actual YongQiLiang rated load are of

4、ten not with horse, the use of coal changes greatly, and often have large design coal poor vision, so in actual use, often to furnace necessary improvement in arch coal need to be comfortable. For transformation of the former furnace arch situation, the existing problem is: for the use of coal and c

5、oal than design poor miscellaneous, boiler flue gas temperature appear the chamber exports low (about 700), more than 200 design low. The new coal fire late, often appear fire bed broken fire, fire from about 0.6 coal disc 1 cm, furnace combustion is not strong, ash high carbon content. According to

6、 the problems furnace arch structure, from improving the ignition of fuel conditions and raise the temperature of boiler furnace to reform. After improvement furnace arch, in actual shipped in from the observed, the transformation effect is good, people away from coal furnace fuel after disc 0.3 MRP

7、 on fire, fire bed combustion intense, flame full of degree good, strong rotation. Due to 中英文資料 the lower arch before, after extended arch, the arch of the throat and mouth shape between into space from the original 2 cm or so down to 1 cm. To strengthen the disturbance of the air mixed, to form the

8、 airflow, strengthen the furnace combustion, improve the efficiency of the district and the whole arch before furnace temperature, make its reach to 1400 above, improved the ignition of fuel conditions. Coal in the ignition, of furnace temperature rise, make thecarbon content and ash significantly l

9、ess. The flue gas mixture and strengthen the hydrocyclone separation of flue gas carbon particles needed to fall in the fire bed and new fuel layer further burns out. 2. The reasonable air supply and regulation In the chain furnace, the furnace, the furnace of reciprocating vibration, according to t

10、he different characteristics of the combustion process, reasonable air supply, to promote the furnace combustion is very important. As in the chain furnace, along with fuel keep movement, which in turn happen on fire, burning, and burn the stage. Burning along the length direction is the stoker stag

11、es, zoning, so along the length direction along the air quantity is also different. The preheating zone along the head and tail burn stage, air requirements small; The burning along the middle stage, air requirements. According to this characteristic, must use block supply air, to meet the needs of

12、the burning. The current domestic production of the boiler although all are to 13 consider this one characteristic, with the wind in subsection room, and equipped with air inlet adjustment. But according to the survey. 3. The secondary air Second wind to strengthen the air combustion is very effecti

13、ve. Second wind have the following function: (1) strengthen the furnace of air disturbance and mixed, make the furnace of oxygen and flammable gas mixture evenly, make chemical dont fully burning loss and the chamber excess air coefficient reducing. (2) secondary air in furnace flue gas vortex forme

14、d, on the one hand, extended the suspension fine coal grain in the chamber of a stroke, increase the fine particles suspended furnace in the residence time of, make it have a full time to burn, make not complete combustion heat loss; Another result of air separation of spiral effect, make coal dust

15、grain and the grain re-blows rejection within, and reduce the small fly ash escape from the quantity, the mechanical incomplete combustion heat loss. 中英文資料 英譯漢英譯漢 14 鍋爐的節(jié)能鍋爐的節(jié)能 工業(yè)鍋爐的節(jié)能技術(shù)涉及多方面 , 最主要是提高工業(yè)鍋爐的熱能利用率 , 即提高工業(yè)鍋爐的熱效率。本節(jié)從燃燒、運(yùn)行維護(hù)、新技術(shù)及新設(shè)備的應(yīng)用、工 業(yè)鍋爐輔機(jī)的節(jié)能、鍋 爐水處理等方面 ,對(duì)工業(yè)鍋爐房的節(jié)能途徑進(jìn)行探討。 1. 爐拱工業(yè)鍋爐的爐拱是十

16、分重要的。爐拱的作用在于促使?fàn)t膛中氣體的 混合以及組織輻射和熾熱煙氣的流動(dòng) ,使燃料及時(shí)著火燃燒。 而目前工業(yè)鍋爐的實(shí)際用汽量與其額定負(fù)荷往往不匹配 ,使用的煤種變化 較大 ,而且與設(shè)計(jì)煤種往往有較大的差異 ,因此在實(shí)際使用中 ,往往要對(duì)爐拱 進(jìn)行必要的改造以適應(yīng)煤種的需要。 為改造前爐拱情況 ,存在的主要問(wèn)題是:因使用 的燃煤比設(shè)計(jì)煤種差而雜 , 鍋爐出現(xiàn)爐膛出口煙氣溫度低( 約 700 ), 比設(shè)計(jì)低 200 。新煤著火遲 , 時(shí)常出現(xiàn)火床斷火 ,著火距煤閘板約 0.61.O m, 爐膛燃燒不強(qiáng)烈 , 灰渣含碳 量高。 針對(duì)爐拱結(jié)構(gòu)存在的問(wèn)題 ,從改善燃料的著火條件 ,提高爐膛溫度著手對(duì)

17、鍋爐進(jìn)行改造。 經(jīng)過(guò)改造后的爐拱 ,在實(shí)際運(yùn)衍中觀測(cè)發(fā)現(xiàn) ,改造效果良好 ,燃料人爐后距煤 閘板 0.3MRP 著火 ,火床燃燒強(qiáng)烈 ,火焰充滿度好 ,旋轉(zhuǎn)強(qiáng)烈。由于前拱降低 , 后拱加長(zhǎng) , 拱間形 成的喉口間距由原來(lái)的 2 cm 左右縮小到 1cm 。加強(qiáng)了該 處 的氣流擾動(dòng)混合 , 重新組織了氣流,強(qiáng)化了爐內(nèi)燃燒 ,有效的提高了前拱區(qū) 和整個(gè)爐膛的溫度,使其達(dá)到 1400以上,改善了燃料的著火條件。煤著火點(diǎn)的 提前 , 爐膛溫度的提高,使灰渣含碳量明顯減少。 煙氣的旋流混合又加強(qiáng)了煙氣 中焦 炭粒子的分離 , 使之落在火床上和新燃料層進(jìn)一步燃盡。 強(qiáng)烈的煙氣旋流 還使煙氣中的 CO 、

18、H2 、 CH4 等可燃?xì)怏w充分燃 燒 , 從而提高了鍋爐的熱 效率 4% 以上。 同時(shí)也提高了鍋爐出力,滿足了生產(chǎn)用汽的需要,減輕了環(huán)境污染, 擴(kuò)大了燃煤品種的適應(yīng)范圍。 中英文資料 2. 合理的送風(fēng)與調(diào)節(jié) 在鏈條爐、振動(dòng)爐、往復(fù)爐中,根據(jù)燃燒過(guò)程的不同特點(diǎn),合理的送風(fēng),對(duì)于 促進(jìn)爐內(nèi)燃燒是很重要的。 如在鏈條爐中 , 燃料隨爐排不停地運(yùn)動(dòng),依次發(fā)生著 火、燃燒、燃盡各階段。燃燒是沿爐排長(zhǎng)度方向分階段、分區(qū)進(jìn)行的 , 所以沿 爐排長(zhǎng)度方向所需的空氣量也就不同。在爐排頭部的預(yù)熱區(qū)和尾部燃盡階段, 空氣需要量??； 在爐排中部的燃燒階段,空氣需要量大。 根據(jù)這一特點(diǎn),必須采用 分段送風(fēng) , 以滿足 燃燒的需要。目前國(guó)內(nèi)生產(chǎn)的鍋爐雖然都考慮到這一特性, 采用了分段風(fēng)室 , 并裝有調(diào)節(jié)風(fēng)門(mén)。但據(jù)調(diào)查 , 不少單位在實(shí) 際運(yùn)行中沒(méi)有 按照燃燒特性進(jìn)行風(fēng)量調(diào)節(jié) ,從而使燃燒所需 要的空氣量與實(shí)際供風(fēng)量沒(méi)有很 好地配合 , 使不完全燃燒損 失增大。因此 ,