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              PLC企業資訊
                RST4-RKWT-4-165/0,6
                發布者:gw0002  發布時間:2018-08-29 14:59:13

                RST4-RKWT-4-165/0,6

                RST4-RKWT-4-165/0,6

                RST4-RKWT-4-165/0,6

                ———偏門的備品備件聯系我們——————
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                福建光沃自動化設備有限公司       
                聯系人    :歐工(銷售經理)                                         
                手機      :18030229053
                電話      :0592-5709825
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                傳真      :0592-5917519

                信用=財富  誠信=財富  共贏=財富

                中段回流的主要作用是移去塔內部分熱負荷。中段回流熱負荷為中段回流經熱交換器冷卻前后的溫差、中段回流量和比熱三者的乘積。由中段回流熱負荷的大小來決定回流的流量。中段回流量為副回中路,用中段熱負荷來串中段回流流量組成串級調節回路。由DCS計算器功能塊來求算冷卻前后的溫差,并求出熱負荷。主回路熱負荷給定值由工人給定或上位機給定。

                3、提高加熱爐熱效率的控制

                為了提高加熱爐熱效率,節約能源,采取了預熱入爐空氣、降低煙道氣溫度、控制過剩空氣系數等方法。一般加熱爐控制是利用煙氣作為加熱載體來預熱入爐空氣,通過控制爐膛壓力正常,保證熱效率,保證加熱爐安全運行。

                4、爐膛壓力控制

                在常壓爐、減壓爐輻射轉對流室部位設置微差壓變送器,測出爐膛的負壓,利用長行程執行機構,通過連桿來調整煙道氣檔板開度,以此來維持爐膛內壓力正常。

                5、煙道氣氧含量控

                一般采用氧化鋯分析器測量煙道氣中的氧含量,通過氧含量來控制鼓風機入口檔板開度,控制入爐空氣量,達到最佳過剩空氣系數,提高加熱爐熱效率。

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