cng加氣站工程項(xiàng)目可行性研究報(bào)告-資料下載頁
2025-05-13 07:05本頁面
【正文】 我國國產(chǎn)壓縮機(jī)的制造質(zhì)量有了長足進(jìn)步，且價(jià)格相對(duì)低廉，而配件及售后服務(wù)方面更具有較大優(yōu)勢(shì)，壓縮機(jī)已完全可以國產(chǎn)化了。 壓縮機(jī)組在壓縮天然氣過程中，氣缸和級(jí)間產(chǎn)生過熱需要冷卻，壓縮機(jī)的冷卻方式分為風(fēng)冷、水冷和水風(fēng)混合冷三種冷卻方式，國外成熟的機(jī)組技術(shù)傾向于風(fēng)冷方式，風(fēng)冷方式能適應(yīng)廣泛的環(huán)境條件，而且因?yàn)閲獾牟馁|(zhì)、制造工藝以及使用狀況較之國內(nèi)優(yōu)越。水冷方式冷卻，需要設(shè)置冷卻塔、蓄水池、水泵，軟水處理器（或高頻電子除垢儀）等設(shè)施，而且循環(huán)冷卻水自身冷卻裝置一冷卻塔本身就是一個(gè)極強(qiáng)的加氧裝置，蓄水池的水表面也為大量氧溶入循環(huán)水提供極好的條件，這些氧隨著循環(huán)水到達(dá)冷卻設(shè)備金屬表面發(fā)生吸氧腐蝕。冷卻塔的冷卻是靠水分的蒸發(fā)吸熱實(shí)現(xiàn)的，循環(huán)水在蒸發(fā)時(shí)，水分損失了，相當(dāng)于水中鹽分被濃縮，時(shí)間一長，容易沉淀并結(jié)垢，影響換熱效果。混冷方式是將壓縮機(jī)循環(huán)冷卻水的自身冷卻做了改進(jìn)，將循環(huán)冷卻機(jī)組氣缸、填料密封、機(jī)油、各級(jí)壓縮機(jī)的冷卻水用一臺(tái)風(fēng)冷器閉式強(qiáng)制換熱冷卻，改冷卻塔開式冷卻循環(huán)水環(huán)風(fēng)冷器閉式循環(huán)、解決了水冷方式存在的問題，同時(shí)風(fēng)扇強(qiáng)制制冷卻比自然蒸發(fā)換熱好，且循環(huán)水用量少，沒必要建造大的蓄水池，節(jié)約了建站面積和投資。 考慮到臨沂地區(qū)地處暖溫帶，本工程推薦采用 壓縮機(jī)壓縮機(jī)，一期安裝一臺(tái)壓縮機(jī)，待市場(chǎng)成熟后加裝一臺(tái)壓縮機(jī)，采用兩臺(tái)并聯(lián)壓縮機(jī)組。 壓縮機(jī)主要技術(shù)參數(shù)見下表：壓縮機(jī)主要技術(shù)參數(shù)表序號(hào)項(xiàng)目技術(shù)參數(shù)備注1壓縮機(jī)天然氣壓縮機(jī)2設(shè)備形式3數(shù)量1臺(tái)(二期再增加一臺(tái))4介質(zhì)脫硫脫水天然氣5吸氣溫度6吸氣壓力7排氣溫度8排氣壓力9供氣量10壓縮級(jí)數(shù)11冷卻方式12潤滑方式 出 Editor39。s note: Judson Jones is a meteorologist, journalist and photographer. He has freelanced with CNN for four years, covering severe weather from tornadoes to typhoons. Follow him on Twitter: @jnjonesjr (CNN) I will always wonder what it was like to huddle around a shortwave radio and through the crackling static from space hear the faint beeps of the world39。s first satellite Sputnik. I also missed watching Neil Armstrong step foot on the moon and the first space shuttle take off for the stars. Those events were way before my time.As a kid, I was fascinated with what goes on in the sky, and when NASA pulled the plug on the shuttle program I was heartbroken. Yet the privatized space race has renewed my childhood dreams to reach for the stars.As a meteorologist, I39。ve still seen many important weather and space events, but right now, if you were sitting next to me, you39。d hear my foot tapping rapidly under my desk. I39。m anxious for the next one: a space capsule hanging from a crane in the New Mexico desert.It39。s like the set for a George Lucas movie floating to the edge of space.You and I will have the chance to watch a man take a leap into an unimaginable free fall from the edge of space live.The (lack of) air up there Watch man jump from 96,000 feet Tuesday, I sat at work glued to the live stream of the Red Bull Stratos Mission. I watched the balloons positioned at different altitudes in the sky to test the winds, knowing that if they would just line up in a vertical straight line we would be go for launch.I feel this mission was created for me because I am also a journalist and a photographer, but above all I live for taking a leap of faith the feeling of pushing the envelope into uncharted territory.The guy who is going to do this, Felix Baumgartner, must have that same feeling, at a level I will never reach. However, it did not stop me from feeling his pain when a gust of swirling wind kicked up and twisted the partially filled balloon that would take him to the upper end of our atmosphere. As soon as the 40acre balloon, with skin no thicker than a dry cleaning bag, scraped the ground I knew it was over.How claustrophobia almost grounded supersonic skydiver22
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