下面比较当系统中定速泵（或调速泵）单独运行、2台定速泵（或2台调速泵）并列运行、1台定速泵与1台调速泵并列运行的状况。1定速泵（或调速泵）单独运行改变泵本身性能曲线的方法有变速调节、动叶调节和汽蚀调节。改变管路特性曲线的方法主要有出口节流调节、入口节流调节，而普遍采用的调节方式是出口端节流调节，它是利用改变阀门开度来进行调节的方式。一般定速泵为出口端节流调节，调速泵为变速调节。锅炉的启动时间较长，而且将锅炉的负荷带至41t／h的整个提压过程按机侧的要求是逐步达到的，也就是说在这个过程中如果采用调速泵可以仅仅靠改变转速就能满足机炉的启动要求。
执行器IC20-60Q3T芯科技，芯创新；88300402


0190899102 HOSE TERMOPLASTIC.
0191015102 CONTACTOR
0191052110 VOLTMETER
0191059116 Ampere meter
0191085203 CAPACITOR
0191085206 CAPACITOR
0191321104 CLAMP PLAST. D=12 STAUFF
0191418074 SPACING SLEEVE
0191496114 WEDGE
0191561114 INSULATING WASHER
0191574114 INSULATED SLEEVE
0191812101 Cable MKFR
0191812102 Cable MKFR
0191812104 Cable MKFR以质量打造品质，用诚信共赢未来！》
0191812105 Cable MKFR
0191954101 RUBBER HOSE
0192058101 THERMAL COMPOUND
0192108201 SOLENOID VALVE
0192190051 PRESSURE COIL
0192200103 Hose Nipple
0192207111 Y-steel bearing UCP 214
0192230107 Blind Plug

BALLUFF BTL-5-R1-M0610-Z-MA000--S135-E4 (Surplus New not in factory packaging)
BALLUFF BIS-F-450-000-A (Used, Cleaned, Tested 2 year warranty)
BALLUFF BTL2-A11-0100-P-S-32 (Surplus New not in factory packaging)
BALLUFF BMOA66RM-X63-1 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BMOA66RM-X63-1 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BIS-C-310-05 (Surplus New not in factory packaging)
BALLUFF C49BPE00PY050M CONNECTOR *NEW IN ORIGINAL PACKAGE*
BALLUFF C49BPE00PY050M CONNECTOR *NEW IN ORIGINAL PACKAGE*
BALLUFF BNI-PNT-104-105-Z015 (Surplus New In factory packaging)
BALLUFF BNS-519-D04-L12-062-10 LIMIT SWITCH BNS519D04L1206210
BALLUFF BTL5-A11-M0305-B-SU147-S32 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BES-Q08ZE-POC20B-BV06 (Surplus New In factory packaging)
BALLUFF BNS-519-101-1-WS-067 (Used, Cleaned, Tested 2 year warranty)
FREE 2 YR WARRANTY FREE US SHIPPING ON ORDERS OVER $25
BALLUFF BNS-519-101-1-WS-067 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BNS-519-101-1-WS-088 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BNS-519-101-1-WS-066 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BNS-519-101-1-WS-066 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BLE-S5-1-FS-15 (Surplus New In factory packaging)
Balluff BES-516-325-BO-C Proximity Switch BES-516-325-B0-C - New No Box
Balluff BES-516-325-BO-C Proximity Switch BES-516-325-B0-C - New No Box
BALLUFF BES-516-207-BO-E-03 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BES-516-207-BO-E-03 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BTL5-A11-M0254-Z-S32 (Used, Cleaned, Tested 2 year warranty)
BALLUFF BNS-519-FR-60-101 (Surplus New not in factory packaging)
BALLUFF BNS-519-FR-60-101 (Surplus New not in factory packaging)
BALLUFF BES-516-359-BO-C-03 (Surplus New not in factory packaging)
燃气压力开关，DG40VC1-5WG/B，75454579
燃气压力开关，DG17VC1-6W/B，75455241
燃气压力开关，DG40VC1-6W/B，75455243
燃气压力开关，DG110VC1-6W/B，75455245
燃气压力开关，DG300VC1-6W/B，75455246
燃气压力开关，DG17VC1-6WG/B，75455247
燃气压力开关，DG40VC1-6WG/B，75455249
燃气压力开关，DG110VC1-6WG/B，75455251
燃气压力开关，DG300VC1-6WG/B，75455252
燃气压力开关，DG40VC9-6W/B，75456344
燃气压力开关，DG17VC9-6W/B，75456403
燃气压力开关，DG60VC9-6W/B，75456404
燃气压力开关，DG150VC9-6W/B，75456405
燃气压力开关，DG300VC9-6W/B，75456406
燃气压力开关，DG40VC9-6WG/B，75457583
燃气压力开关，DG500VC1-6W/B，75457730
燃气压力开关，DG500VC1-6WG/B，75458957
燃气压力开关，DG17VC8D-6S32，84448004
它的多项优越性与我国当时经济能力低下的国情相符合，在我国燃煤电厂得到了极为广泛的应用。而且，为了保证排放到大气中SO2扩散稀释后的浓度合乎大气环境质量要求，烟囱高度也越来越高，目前，我国烟囱已达24m。我国每年有4多家燃煤电厂利用5多座高烟囱向大气排放5Mt以上的SO2。由于我国采用高烟囱排放含硫烟气及分散布点的政策，利用了大气环境的自净作用，使得含硫烟气排放总量在逐年增大的情况下，局部地区大气SO2浓度基本上仍得到控制。
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