第一章 概述與通則
第一節(jié) 主機及化學系統(tǒng)概述
一．主機概況：
● 印尼中爪哇2×300MW燃煤電站項目為一濱海工程。電廠位于印尼中爪洼芝拉扎鎮(zhèn)東北，南面緊鄰印度洋。
● 三大主機分別由四川東方鍋爐廠、東方汽輪機廠和東方電機廠制造。
● 電廠水源為緊鄰的海水，采用海水直流循環(huán)系統(tǒng)，通過海水淡化提供電廠必須的淡水。
二．化學系統(tǒng)概述：
 １． 為滿足電廠用水需要，原水需進行凈化處理。凈化處理采用混凝、澄清和過濾工藝流程。 
２． 補給水處理系統(tǒng)主要包括過濾系統(tǒng)、一級反滲透系統(tǒng)、二級混床，二臺機組共用2X1000m3除鹽水箱,三臺除鹽水泵。過濾系統(tǒng)包括雙介質過濾器和活性炭過濾器，濾料分別為無煙煤、石英砂和活性炭，分別采用并聯(lián)布置。反滲透裝置采用并聯(lián)布置，混床采用并聯(lián)布置。
３． 凝結水精處理采用中壓運行、體外再生系統(tǒng)。每臺機組設2套高速混床（1運1備）；1、2號機組共用一套體外再生設備。精處理系統(tǒng)設有高速混床旁路系統(tǒng)，當進水超溫或系統(tǒng)超壓情況下，凝結水全部經(jīng)旁路通過。
高速混床運行采用在線硅酸根分析儀、鈉表、電導率儀及累計制水量控制運行失效終點。
４． 汽水加藥及取樣系統(tǒng)：芝拉扎電站機組熱力系統(tǒng)的汽水品質監(jiān)督采用水汽集中取樣裝置，整套裝置包括降溫減壓架、取樣儀表屏。高溫、高壓汽、水樣經(jīng)取樣裝置進行減溫、減壓和恒溫，在線各類化學監(jiān)督儀表跟蹤檢測各點數(shù)據(jù)并用記錄儀及聲光信號裝置顯示。
汽水加藥系統(tǒng)采用加氨水、聯(lián)胺、磷酸三鈉處理方式。
Chapter One Overview and general principle
Section One Overview of main engine and chemistry system
I. Overview of main engine:
●Indonesia Java 2×300MW coal-fired power plant is a coastal area project. The power plant is located in northeast Cilacap town of central Java of Indonesia and close to Indian Ocean in south.
●Three major main engines are manufactured by Sichuan East Boiler Plant, East Steam Turbine Factory and East Electrical Machinery Plant respectively.
●The water source of power plant is supplied by the sea water nearby, which uses the direct circulation system of sea water and supplies the fresh water to power plant through the sea water desalination process.

II. Overview of chemistry system:
1. In order to fulfill the water supply of power plant, it is required to implement the purification process to the raw water. Purification processing applies coagulation, clarification and filtration technical process. 

2. The water supply treatment system includes filtration system, the first class anti-penetration system and the second class mixing bed. These two units share 2X1000m3 desalinization water tank and three desalinization water pumps. Filtration system includes a double medium filter and an activated charcoal filter. The filter media includes anthracite, quartz sand and activated charcoal, which are arranged in parallel separately. The anti-penetration installment applies the parallel arrangement as well as the mixing bed.
3. Condensate polishing treatment applies medium pressure operation and external regeneration system. Each unit are arranged with 2 sets of mixing beds (1 for operation and 1 for backup in case of failure); the 1 and 2 units share the same set of external regeneration equipment. The polishing treatment system is equipped with high speed mixing bed by-path system. The condensing water shall pass through the bypass in case of feeding water overheated or system overpressure.
The operation of mixing bed applies on-line silicon dioxide analyzer, sodium analyzer, conductivity meter and integrating to control operation of failure end.

4. The steam-water dosing and sampling system: the steam-water quality supervision of the thermodynamic system of Java power plant unit applies the concentrated sampling device. The integral device includes a temperature and pressure relief frame and a sample measuring appliance panel. The high temperature and high pressure steam water sample shall be processed through temperature and pressure releasing procedures and maintain a constant temperature. The various online chemical supervision measuring appliance shall track the data of each checking points and displays in recording instrument and acousto-optics signal device.
The steam-water dosing system applies the three dosing procedures of ammonia solution, diammonium and trisodium phosphate.