PH Waste Heat Boiler
设 计 说 明 书
Design Description Book
(258SY00-SM)
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南通万达锅炉有限公司
Nantong Wanda Boiler Co., Ltd.
258SY00-SM
设计说明书
Design Description Book
一、锅炉参数及结构简介
Ⅰ．The parameters and briefing of the boiler construction
本台余热锅炉是应用于水泥窑余热发电系统中回收水泥窑废气余热的关键设备，其
安装部位为：水泥窑窑尾废气出口至窑尾高温风机入口的废气管道上，因此其简称“PH”
余热锅炉。废气入口温度 275℃，废气流经锅炉高低压过热器、蒸发器和省煤器及热水器
后，温度降至 122.7℃左右，然后经水泥窑窑尾高温风机送入收尘系统。其具体设计参数
如下：
This waste heat boiler is major equipment mainly for power generation by exhaust heat
recovered from the cement kiln. This boiler is to be installed: between the gas outlet of the
preheater at the cement kiln back end and the exhaust gas pipeline of the high temperature fan
inlet at the kiln back end. Thus called “PH” Waste Heat Boiler. The design temperature at the
exhaust gas inlet of the SP boiler is 275℃(the temperature of the outlet exhaust gas of the
preheated at the cement kiln back end). The exhaust gas temperature drops down to about
122.7℃ after the exhaust gas passes the HP & LP superheater, evaporator, economizer and
waterheater. And then the gas is drafted to the dust collecting system of the kiln by the high
temperature fan at the cement kiln back end. The design parameters are listed as follows:
（一）进口废气参数
Parameters of exhaust gas at the inlet
进口废气量
524648Nm3/h
Gas flow at inlet
进口废气温度
275℃
Gas temperature at the inlet
进口废气含尘量
55g/Nm3
Dust content in gas at the inlet
出口废气温度
~122.7℃
Gas temperature at the outlet
锅炉漏风率
2%
Air leak rate
废气成分
含生料粉尘的热烟气
Composition of the exhaust gas
hot gas containing raw material powder
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设计说明书
Design Description Book
（二）设计参数
MP Design parameters
（1） 高压段参数
HP steam conditions
额定蒸发量
21.7 t/h
Rated evaporation
额定蒸汽压力
1.85MPa(g)
Rated steam pressure
额定蒸汽温度
266 ℃
Rated steam temperature
给水温度
125 ℃
Feed water temperature
水压试验压力
3.6MPa(g)
Hydrostatic test pressure
（2） 低压段参数
LP steam conditions
额定蒸发量
15.78 t/h
Rated evaporation
额定蒸汽压力
0.4MPa(g)
Rated steam pressure
额定蒸汽温度
200 ℃
Rated steam temperature
给水温度
48 ℃
Feed water temperature
水压试验压力
1.05MPa(g)
Hydrostatic test pressure
（3） 热水段参数
Waterheater conditions
额定水量
81 t/h
Amount of water
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设计说明书
设计压力
Design Description Book
3.4MPa(g)
Design pressure
额定出水温度
125 ℃
Outlet water temperature
给水温度
48 ℃
Feed water temperature
水压试验压力
6.8MPa(g)
Hydrostatic test pressure
二、设计要点
Ⅱ．Major characteristics of the design
本锅炉为立式布置的自然循环余热锅炉。从给水操纵台分配来的窑头热水器热水流
过省煤器进入锅筒, 后经下降管流入蒸发器，被加热后的汽水混合物再引回锅筒，从锅筒
引出的饱和蒸汽进入过热器加热后产生额定压力下的过热蒸汽
This boiler proper is a vertical and natural-circulated exhaust heat boiler. The water of the
AQC waterheader come from the feed water system is fed into the economizer heater and then
to the drum, then pass through the downcomers and come to the generator, where the heated
mixture of the water and steam is led back to the drum. The saturated steam from the drum will
go to the superheater for superheating and the superheated steam is then produced under the
rated pressure.
本锅炉的热源来自水泥窑窑尾预热器排出的废气，其废气温度较低，粉尘含量很大，
运行中受热面的积灰较严重。为了防止积灰，提高锅炉热效率，实现锅炉安全、稳定运
行的目的，本锅炉结合锅炉结构特点及实际运行情况，采用机械振打装置予以清灰，加
强清灰效果。
The heating source for the boiler is the exhaust gas discharged from the preheater at the
cement kiln back end. The exhaust gas temperature is relatively low. And the dust content is
very high, therefore, the soot deposition during the operation of the boiler will be very serious.
To prevent the soot deposition and improve the boiler heat efficiency, and to achieve the goal of
safe and stable operation of the boiler, the mechanical rapping device is set up for soot-blowing,
depending on the boiler’s actual operating condition and the construction characteristics, to
improve the soot removing effect.
锅炉炉墙采用轻型护板炉墙，为降低锅炉漏风系数，炉墙人孔、穿墙管、炉墙护板
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接缝、炉外集箱处的密封等均进行了精心设计。
The boiler walls are made of light casing and paneling to reduce the air leak coefficient of
the boiler and give no impact on the cement production and the stable power generation. The
elaborate design is provided on sealing for the manholes, piping penetration through the walls,
boiler casing joints and the boiler header outside the boiler.
三、结构简介
Ⅲ．Brief description of the boiler construction
中压蒸汽段
The part of HP steam
1．锅筒内径为Φ1800，材料 SA-516M Gr.70。锅内设备主要有：一级分离器、二级
分离器、给水装置、加药装置和排污装置等。
The internal diameter of the drum is Φ1800, made of SA-516M Gr.70 steel. The major
internal devices arranged in the drum include the primary separator, secondary separator, feed
water device, dosing device and the blowdown device.
进入锅筒的汽水混合物，先经一级旋风分离器进行一次分离，再经二级波形板分离
器和匀汽孔板进行二次分离后引出。此外，为了进一步提高汽水品质，锅筒上还设置了
加药管和排污管等。
The water/steam mixture entering the drum is primarily separated by the cyclone separator,
and then further separated by the secondary separator of a corrugated scrubber and a perforated
distribution plate before comes out. In addition, to improve the steam quality, the drum is also
equipped with dosing and blowdown piping．
2．过热器由进口集箱、出口集箱和蛇形管束组成。集箱由规格为Φ273x12.7 的钢管
制成，材料为 SA-106M Gr.B。过热器蛇形管束由Φ38X4.06 管子制成，材料为 SA-210M
Gr.A-1，顺列布置。过热器管束共 1 组。
The superheater inlet and outlet header are sized Φ273x12.7, both made from material of
SA-106M Gr.B. The superheater tubing bundle is composed of Φ38x4.06 serpentine coils of
in-line arrangement, made from material SA-210M Gr.A-1 and configured in 1 group. The
superheater is composed one group of tubing bundle, which will be welded in-situ.
3．蒸发器由进口集箱、出口集箱和蛇形管束组成。集箱由规格为Φ219.1x12.7 的钢
管制成，材料为 SA-106M Gr.B；蒸发器蛇形管束由Φ42X3.2 的管子制成，材料 SA-210M
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Gr.A-1，顺列布置，蒸发器管束共 6 组。每组管束与进、出口集箱在现场焊接。进口集箱
设两根连接管通过下降管与锅筒连接，出口集箱设两根连接管通过引出管与锅筒连接。
The inlet and outlet headers of the evaporator is sized Φ219.1 x12.7, made from the
material SA-106M Gr.B; The evaporator tubing bundle is composed of Φ42X3.2 serpentine
coils of in-line arrangement, made from material SA-210M Gr.A-1 and configured in 6 groups.
Each group of the bundle is welded in-situ to the inlet and outlet headers. The inlet header is
connected with the drum by two connecting pipes through the downcomers. The outlet header
is connected with the drum by two connecting pipes through the risers.
4．省煤器由进口集箱、出口集箱和蛇形管束组成。集箱由规格为Φ219.1x12.7 的钢
管制成，材料为 SA-106M Gr.B。省煤器蛇形管束由Φ38X3.2 管子制成，材料为 SA-210M
Gr.A-1，顺列布置。省煤器管束共 2 组。
The economizer inlet and outlet header are sized Φ219.1x12.7, both made from material
of SA-106M Gr.B. The economizer tubing bundle is composed of Φ38x3.2serpentine coils of
in-line arrangement, made from material SA-210M Gr.A-1 and configured in 2 groups. The
economizer is composed one group of tubing bundle, which will be welded in-situ.
低压蒸汽段
The part of LP steam
1.低压锅筒内径为Φ1500，材料 SA-516M Gr.70。锅内设备主要有：一级分离器、二
级分离器、给水装置、加药装置和排污装置等。进入锅筒的汽水混合物，先经一级分离
器进行一次分离，再经汽水分离装置进行二次分离后引出。此外，为了进一步提高汽水
品质，锅筒上还设置了加药管和排污管等。
The internal diameter of the LP drum is Φ1500, made of SA-516M Gr.70 steel. The major
internal devices arranged in the drum include the primary separator, secondary separator, feed
water device, dosing device and the blowdown device. The water/steam mixture entering the
drum is primarily separated by the separator, and then further separated by the Steam-water
separation apparatus before comes out. In addition, to improve the steam quality, the drum is
also equipped with dosing and blowdown piping．
2. 低压过热器由进口集箱、出口集箱和蛇形管束组成。集箱规格为Φ323.8×14.27，
材料为 SA-106M Gr.B；过热器蛇形管束由Φ38X3.2 管子制成，材料为 SA-210M Gr.A-1，
顺列布置。过热器管束共 1 组。
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设计说明书
Design Description Book
The LP superheater header are sized Φ 323.8 × 14.27, made from material of
SA-106MGr.B.The superheater tubing bundle is composed of Φ38x3.2 serpentine coils of
in-line arrangement, made from material SA-210M Gr.A-1 and configured in 1 group. The
superheater is composed one group of tubing bundle, which will be welded in-situ.
3. 低压蒸发器由进口集箱、出口集箱和蛇形管束组成。集箱由规格为Φ219.1x12.7 的
钢管制成，材料为 SA-106M Gr.B；蒸发器蛇形管束由Φ42X3.2 的管子制成，材料 SA-210M
Gr.A-1，顺列布置，蒸发器管束共 4 组。每组管束与进、出口集箱在现场焊接。进口集箱
设两根连接管通过下降管与锅筒连接，出口集箱设两根连接管通过引出管与锅筒连接。
The inlet and outlet headers of the LP evaporator is sized Φ219.1 x12.7, made from the
material SA-106M Gr.B; The evaporator tubing bundle is composed of Φ42X3.2 serpentine
coils of in-line arrangement, made from material SA-210M Gr.A-1 and configured in 4 groups.
Each group of the bundle is welded in-situ to the inlet and outlet headers. The inlet header is
connected with the drum by two connecting pipes through the downcomers. The outlet header
is connected with the drum by two connecting pipes through the risers.
4．省煤器由进口集箱、出口集箱和蛇形管束组成。集箱由规格为Φ219.1x12.7 的钢
管制成，材料为 SA-106M Gr.B。省煤器蛇形管束由Φ42X3.2 管子制成，材料为 SA-210M
Gr.A-1，顺列布置。省煤器管束共 1 组。
The economizer inlet and outlet header are sized Φ219.1x12.7, both made from material
of SA-106M Gr.B. The economizer tubing bundle is composed of Φ42x3.2serpentine coils of
in-line arrangement, made from material SA-210M Gr.A-1 and configured in 1 group. The
economizer is composed one group of tubing bundle, which will be welded in-situ.
热水段
The part of Waterheater
热水器由进口集箱、出口集箱和蛇形管束组成。集箱由规格为Φ219.1x12.7 的钢管制
成，材料为 SA-106M Gr.B。省煤器蛇形管束由Φ42X3.2 管子制成，材料为 SA-210M
Gr.A-1，顺列布置。热水器管束共 2 组。
The waterheater inlet and outlet header are sized Φ219.1x12.7, both made from material
of SA-106M Gr.B. The waterheater tubing bundle is composed of Φ42x3.2serpentine coils of
in-line arrangement, made from material SA-210M Gr.A-1 and configured in 2 groups. The
waterheater is composed one group of tubing bundle, which will be welded in-situ.
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设计说明书
Design Description Book
汽水系统
The steam and water system
详见锅炉汽水系统图。
See the boiler steam and water system drawing for details．
清灰及检修
Soot blowing and the maintenance
在高低压过热器、蒸发器、省煤器及热水器每组管束之间设置了带有足够数量振打头
的机械振打清灰装置，并设有人孔以便检修。
There are sufficient rappers for the rapping device of the soot remover between the HP、LP
superheater and evaporator and economizer and waterheater tube bundle groups, in addition,
the manholes are arranged for maintenance access.
炉墙
The boiler walls
（1）为了提高锅炉的效率，减少炉墙漏风，降低锅炉的散热损失，本锅炉采用轻型
护板炉墙，由槽钢组成框架，炉内侧贴钢板，外侧贴瓦楞板，中间添加硅酸铝
耐火纤维板。护板安装时，护板框架应与锅炉钢梁满焊，以杜绝护板接缝处有
漏风现象产生。
To improve the boiler efficiency, and minimize the air leakage in the boiler walls
and the heat loss due to radiation, this boiler uses the light boiler casing and
paneling structured by U-bar which one side is clad and the other is metallic tie plate
and sandwiched with alumino-silicate fiber sheet. When the boiler casing is installed,
the casing frames shall be welded to the boiler steel structure with full weld to
eliminate any air leakage along the casing joints.
（2）锅筒、引出管、下降管以及本体管路等均应保温，材料用户自理。
The drum, lead piping, downcomers and tubing of the boiler proper shall be
thermal-insulated by the insulation material supplied by the user．
四、给水品质及出口蒸汽品质要求
Ⅳ．The requirement for the quality of feed water and produced steam
总硬度≤0.03 毫摩尔/升；
Hardness ≤0.03 mmol/L ;
溶解氧≤0.1 毫克/升；
Dissolved oxygen ≤0.1 mg/L ;
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Design Description Book
悬浮物≤5 毫克/升；
Suspended solids ≤5 mg/L ;
PH≥7 (25℃)；
PH≥7 (25℃) ;
油≤2 毫克/升。
Oil ≤2 mg/L ;
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