水汽系統(tǒng)的加藥系統(tǒng)翻譯-中英對照
水汽監(jiān)督和分析
第一節(jié) 水汽系統(tǒng)概況
一．水汽取樣系統(tǒng)的組成：
為保證機組安全運行，本工程為每臺機組分別設(shè)置了一套水汽集中取樣分析裝置以監(jiān)測熱力系統(tǒng)水汽品質(zhì)。
水汽集中取樣分析裝置由高溫高壓架、儀表盤和恒溫裝置組成，采用兩屏式，其中高溫高壓架為一個屏架，儀表盤和恒溫裝置組合在一個屏架上。
二．水汽系統(tǒng)各取樣點及儀表分布：
凝結(jié)水泵出口： 電導率表、溶氧表、鈉表、人工取樣
除氧器出口： 溶氧表、人工取樣
省煤器入口： pH表、電導率表、硅表、人工取樣
爐水(左側(cè)、右側(cè))： pH表、比電導率儀、人工取樣
飽和蒸汽(左側(cè)、中、右側(cè))： 電導率表、硅表、人工取樣
過熱蒸汽(左側(cè)、右側(cè))： 電導率表、硅表、人工取樣
再熱蒸汽入口(左側(cè)、右側(cè))： 人工取樣
閉式循環(huán)冷卻水： 人工取樣
高壓加熱器疏水： 人工取樣
低壓加熱器疏水： 人工取樣
凝結(jié)水精處理出口： pH表、電導率表、人工取樣
三．各取樣點的參數(shù)：
序號 取樣點 溫度(℃) 壓力(MPa)
1 凝結(jié)水泵出口 45 3.5
2 除氧器出口 181 0.925
3 省煤器入口 257 20.4
4 爐水（左側(cè)、右側(cè)） 365 20
5 飽和蒸汽(左側(cè)、中、右側(cè)) 365 20
6 過熱蒸汽 548 18.4
7 再熱蒸汽入口（左側(cè)、右側(cè)） 336 4.32
8 閉式循環(huán)冷卻水 20 0.35
9 高壓加熱器疏水 218 3.35
10 低壓加熱器疏水 192 1.08
一．水汽質(zhì)量標準：
● 爐水水質(zhì)控制項目和標準：（PO43盡量控制在1.0―1.5ppm）
PH：9～10 PO43 ：0.5～3.0ppm SiO2≤250 PPb DD≤20us/cm
● 給水水質(zhì)標準：
硬度:0umol/l 溶解氧≤7ppb PH :9.0～9.3 DD≤0.3us/cm
N2H4 ： 10～30ppb Fe3+ ≤20ppb Cu2+≤5ppb
● 蒸汽控制項目、標準：
SiO2≤20ppb Na+≤10ppb DD≤0.2us/cm
● 凝結(jié)水控制標準：
硬度<1umol/l 氫電導率≤0.3us/cm 溶解氧≤30ug/l
● 經(jīng)精處理混床處理后水質(zhì)標準：
硬度0 umol/l 電導率≤0.2us/cm 二氧化硅≤15ug/l 鈉 5ug/l
鐵≤8ug/l 銅≤3ug/l
一．加藥系統(tǒng)概況：
1．系統(tǒng)的功能：
化學加藥系統(tǒng)包括給水及凝結(jié)水加氨系統(tǒng)，給水加聯(lián)氨系統(tǒng)，爐水加磷酸鹽系統(tǒng)，以控制水汽系統(tǒng)化學工況，防止系統(tǒng)結(jié)垢和腐蝕。氨加入凝結(jié)水處理的出口及除氧器下降管中維
持給水PH值在合適的范圍內(nèi)以防止系統(tǒng)腐蝕；聯(lián)氨加入除氧器下降管中以去除殘余氧；磷酸鹽直接加入鍋爐汽包，提高爐水PH值和防止殘余硬度在鍋內(nèi)沉積，以防止結(jié)垢和腐蝕。
2．系統(tǒng)的組成和作用：
● 給水、凝結(jié)水加氨系統(tǒng)：
氨鋼瓶中液氨經(jīng)蒸發(fā)定量注入到氨攪拌溶液箱，稀釋到1－5%濃度后，再由氨加藥泵送至凝結(jié)水處理的出口和除氧器出口下降管，氨的加入量以控制給水PH值在9.09.5范圍內(nèi)。
● 給水加聯(lián)氨系統(tǒng)：
桶裝聯(lián)氨定量注入到聯(lián)氨攪拌溶液箱中，稀釋到0.1-0.3％濃度后，再用聯(lián)氨加藥泵加至除氧器下降管中，加入聯(lián)氨以控制給水殘余氧在一定范圍內(nèi)。
● 爐水加磷酸鹽系統(tǒng)
固體粉末狀磷酸鹽在溶液箱內(nèi)加水配制成5－8％濃度的磷酸鹽，再由磷酸鹽加藥泵送至鍋爐汽包，磷酸鹽的加藥量以控制爐水磷酸根含量0.5－3mg/l范圍內(nèi)。
3．系統(tǒng)的設(shè)備組成：
● 給水及凝結(jié)水加氨系統(tǒng)
兩臺機組共用一套加氨裝置。加氨為兩點加氨，即除氧器下降管和凝結(jié)水精處理出口。每套加氨裝置由2臺攪拌溶液箱、5臺加藥泵(4臺運行，1臺備用)以及系統(tǒng)管路、閥門、管件
、表計等組成，每套加氨裝置內(nèi)所有設(shè)備、管道等全部固定在一個碳鋼底盤上，并配備平臺扶梯。系統(tǒng)內(nèi)凡與溶液接觸部分均應(yīng)無銅件。
● 給水加聯(lián)氨系統(tǒng)
兩臺機組共用一套加藥裝置。聯(lián)氨的加入點為：除氧器下降管。每套加藥裝置由2臺攪拌溶液箱、3臺加藥泵(2臺運行，1臺公共備用)以及輔助設(shè)備、管路、閥門、管件、表計等組
成，每套加藥裝置內(nèi)所有設(shè)備、管道等全部固定在一個碳鋼底盤上，并配備平臺扶梯。
Chapter Two Pretreatment system of sea water
Section one Overview of sea water pretreatment
1. Overview of equipments:
The output power of incline pipe settling pond for each unit: 400t/h; two units; settling pond includes pipeline mixer, grid reaction tank and incline pipe
settling pond;
The output power of siphon filter is about 800t/h, including one unit and shall be divided into 8 to filtering unit;
Dosing device: one set of coagulant dosing device, a set of coagulant aid dosing device and a set of sodium hypochlorite dosing device; The coagulant and
coagulant aid shall be delivered into the pipe mixer; the sodium hypochlorite shall be delivered to inline pipe settling pond;
2.1.2 Basic technology specification:
No. Description Specification Unit Quantity Remark
1 Pipeline mixer DN400 (glass fiber reinforced plastic) Unit 2 Each unit has 2 dosing vent which are arranged with one UPVC manual ball
valve respectively;
2 Grid reactor 1075×1000 (glass fiber reinforced plastic) m3 128 Located in the grid reaction tank;
3 Vinyl-acrylic incline pipeline φ25mm, inclining length is about 1000 and 60 degree;
Material quality: vinyl-acrylic m3 90 Located in the incline pipeline sedimentation tank
4 Collecting annulus 400×250mm, L=4m;
Glass fiber reinforced plastic Set 10 Located in the incline pipeline sedimentation tank
5 Current plate 10000×600
Glass fiber reinforced plastic Piece 2 Located in the distributing channel
6 Inlet on-line turbidity meter CUM223/CUS31 measuring range:0-6000 Unit 1 German E+H
7 Outlet on-line turbidity meter Micro200BW
measuring range:0-100 Unit 1 American HF Corporation
8 Incline pipeline bracket of sedimentation tank m2 90 Located in the incline pipeline of sedimentation tank
9 Quartz filter sand 0.6-1.2mm Ton 97 Located in the siphon filter tank;
10 Gravel of supporting layer 2-4/4-8/8-16/16-32: 50mm Ton 27 Located in the siphon filter tank;
11 ABS filter head 1m3/h 4600 Located in the siphon filter tank;
12 high-precision filter board of filtering tank 1m2 Piece 84 Located in the siphon filter tank;
13 Supporting platform, staircase and passage of reaction tank; Set 1 Q235A
14 Supporting platform, staircase and passage of filtering tank Set 1 Including the platform, staircase and passage of reaction
tank and filtering tank;
15 Pressure switch 1 Arranged on the water inlet pipe; SOR product
16 Telltale float 9
17 Air compressor Z-0.08/0.7 Unit 1 Including air collector
18 Electrical control cabinet Unit 1 PLC control; including the cable and sheath;
19 Installation accessories of equipment Set 1 Necessary embedded parts, accessories, bolts, and nuts, etc;
2. Technical processes:
加藥裝置: Dosing device
加氯: Chlorination
海水原水: Sea water
混合器:Mixer
反應(yīng)沉淀池: Reaction sediment tank
過濾: Filtering水池: Sea water tank
排泥: Sludge discharge
反洗排水: Back flushing discharging
排水溝: Drainage channel
Section two Operation mode of system
The sedimentation tank shall be divided into two groups; filter tank is about 800m3/h, which uses two groups of parallel operations; the sedimentation tank
and filter tank have unit system operation and it is applicable to expand the operation of unit system. During the unit system operation, a group of
sedimentation shall match a group of filter tank; during the operation of expanded unit system, one group sedimentation match two groups of filter tanks.
These two types of operations may be regulated in manual.
Section three Preparations before system operation
I. Preparations before the start of coagulant dosing device.
1. The agitator motor dosing pump of solution tank may operate properly.
2. The watering feeding vent and discharging vent of solution tank shall be tightness; the inlet and outlet vent of dosing pump shall be open before
operation.
3. Coagulants supply shall be sufficient, which may ensure the consumption of 7-10 days; informs the relevant unit in case of insufficient of dosing
materials.
4. Dissolves the dosing materials:
Open the watering supply vent of solution tank, add water to 4/5 and slowly pour proper amount coagulant into the unit.
Start the mixer for stirring.
Open the watering supply vent and add the water to a required height.
Stop stirring after 20 minutes; open the outlet vent to discharge the solution to the gauge tank.
2. Preparation before the startup of congeal dosing device
1. Preparations before the start of coagulant dosing device..
2. The watering feeding vent and discharging vent of solution tank shall be tightness; the inlet and outlet vent of dosing pump shall be open before
operation.
3. Coagulants supply shall be sufficient, which may ensure the consumption of 7-10 days; informs the relevant unit in case of insufficient of dosing
materials.
4. Dissolves the dosing materials:
●Open the watering supply vent of solution tank, add water to 4/5 and slowly pour proper amount coagulant into the unit.
● Start the mixer for stirring;
●Open the water gate to the required height
●Stop stirring after 20 minutes; open the outlet vent to discharge the solution to the gauge tank.
3. Preparations before the start of sodium hypochlorite device:
1. Check the flow level of sodium hypochlorite storing tank.
2. Check that sodium hypochlorite dosing pump shall be in a normal operation.
3. Check that the inlet vent of sodium hypochlorite dosing pump shall be opened;
4. Check that the booster pump of sea water shall be in a normal operation; the discharging vent of incline pipeline settling tank and siphon filter tank
shall be close respectively, the manhole gate is close; the one-time dosing gate is open;
Section four System Operation;
I. Start of incline pipeline settling tank:
1. Open the front inlet of pipeline mixer.
2. Start the sea water booster pump; start the outlet vent and control to the proper flow capacity.
3. Start the coagulant dosing pump and the operation of coagulant aid and control proper amount of dosing flow.
4. Open the sodium hypochlorite dosing pump when the incline pipeline settling tank has the majority of water,
5. Start the siphon filter tank: open the inlet gate of siphon filter tank;
III. Shut down of incline pipeline settling tank:
1. Stop the coagulant dosing pump and operation of coagulant aid and close the outlet vent.
2. Stop the sea water booster pump and close the outlet vent.
3. Stop the operation of sodium hypochlorite dosing pump and close the outlet vent.
4. Close the front outlet of pipeline mixer.
5. Shut down the siphon filter tank: close the inlet vent of siphon filter tank.
Chapter three Desalinization system
Section one Overview of desalinization system
1. Equipment description:
武漢翻譯公司
2013.7.26