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电厂化水系统
Power Plant Water System
电厂化水系统作为重要的辅助车间和辅助系统，特别是大型火电厂、供热电厂的化水处理车间，处理量大，工艺复杂，工艺要求高，其运营的好坏直接关系到电厂的安全运作及可靠性。
国外大部分电厂采用反渗透装置+离子交换装置的组合工艺，它与单纯的离子交换系统相比再生树脂的酸、碱用量可节约50%-90%，且制水流程灵活，对原水浓度波动适用性强，出水水质稳定，即保证了生产，又减少了工人的劳动程度，获得了明显的经济效益、环境效益和社会效益。
我国从20世纪70年代末开始有电厂引进国外用反渗透技术制备高压锅炉补给水的技术，积累了较为成熟的经验，取得了很大的经济效益。
As an important accessory plant and system,
especially the water treatment shop of large
thermal power station and power plant, the water
system has large treating capacity ,complex
process and high process requirement ,the
running of the system relates to the safe
operating and dependability of the electricity
plant.
most of the electricity plants adopt the group
tech of reverse osmosis equipment and ion
exchanger,it can save 50%-90% of acid and alkali
consumption of regenerated resin compared with
single ion exchanging system, and due to its
flexible water-making process ,strong
adaptability to the fluctuation of concentration
of raw water ,and stable quality of water
output, the production is guaranteed ,and the
labor intensity is reduced ,the economic
,environmental and social benefits are gained.
In China ,the reverse osmosis tech was
introduced to prepare supply water for the
high-pressured boilers in the 70s of the 20th
century ,so we are experienced in this field and
gain high benefit.
锅炉补给水的水质标准 Index of boiler
supply water
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水处理系统
Water treatment system |
硬度(µmol/L)
Hardness (µmol/L) |
二氧化硅(µg/L)
Silicon dioxide (µg/L) |
电导率(25%)
(µS/cm)
Conductivity(25%)
(µS/cm) |
碱度(mmol/L)
Alkalinity (mmol/L) |
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一级化学除盐系统出水
Water output of first-level chemical
desalination system |
≈
0 |
≤100 |
≤10** |
- |
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一级化学除盐加混床系统出水
Water output of first-level chemical
desalination and system and bed-mixing
system |
≈
0 |
≤20 |
≤0.2 |
- |
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石灰、二级钠离子交换系统出水
Exchange system of lime, second evel
Sodium ion |
≤5.0 |
- |
- |
0.8-1.2 |
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氢一钠离子交换系统出水
Exchange system of hydrion and sodium
ion |
≤5.0 |
- |
- |
0.3-0.5 |
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二级钠离子交换系统出水
Exchange system of sodium ion |
≤5.0 |
- |
- |
- |
注：
* 当原水中非活性硅含量较高时,此指标应为全硅含量;
* 用于5.9Mpa及以上锅炉时，出水导电率应控制≤5µS/cm(25℃)。
Remark :
* the index is total silicon when the inactive
silica content is high in the raw water.
* when used in the boilers of 5.9Mpa or
above,the water output and electric conductivity
shall be controlled≤5µS/cm(25℃).
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