Dalate GGH Operation Instruction

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为了最大程度上降低由于密封间隙导 致的从原烟气到净烟气的泄漏（比如 热交换损失），GGH低泄漏风机系统 从底部密封向转子隔仓吹入热的净烟 气。吹入的净烟气压力高于原烟气入 口压力，通常低泄漏风机出口侧的压 力应高于原烟气入口的压力0.5kpa。 这样隔仓内部就形成了密封风墙而阻 止原烟气向净烟气的泄漏。 由于通过GGH的烟气的压力高于大气 压力，因此通过壳体的通道都必须进 行空气密封。 密封空气由一个风机提供并由一个密 封空气加热器预热，密封空气出口压 力应该高于4kpa且温度应该在50度至 80度之间。管道将密封空气送到以下 部件： 在顶部导向轴承区域的轴密封 在底部推力轴承区域的轴密封 小齿轮轴的通道
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Main components sketch 主要部件简图
GGH System Arrangement sketch (GGH系统布置图）
3. Seal system
In order to minimize dirty flue gas leak to ambient and clean gas side during GGH running. We adopt three sealing methods to decrease the flue gas leakage. 1. On the hot and on the cold side the rotor is sealed against the stationary casing and the connection ducts by means of the axially acting sealing system. The sealing system consists of the seal frame connected with the heat exchanger casing via compensators and spring points. The seal frames are brought in contact to the rotor front faces under utilisation of the existing weight conditions via settable spring pins. The required pressing forces bottom are created by means of the spring tension which compensate the dead weight of the sealing systems and additionally generate the required pressing forces. Resetting of the seals is also possible from outside during operation due to the accessibility of the spring points.
mainconfigurationunit主要组成部分???rotorandcasingthrustbearingandguidebearingdriveunitmaindrivemotorandstandbydrivemotorheatingelementssealframesystemcircumferentialandradialsealframeincludinguppersideandframeincludinguppersideandbottomsidevalvestationsootblowersystemcleaningsystemsealairfanpurgegasfanrotationmonitoringsystem????转子和壳体支撑轴承和导向轴承?驱动单元主驱动马达和备用驱动马达换热元件??密封框架系统包括上部和下部的周向密封框架系统和径向密封框架系统系统阀站吹灰器系统吹扫装置密封风机低泄漏风机转速控制装置??????????maincomponentssketch主要部件简图gghsystemarrangementsketchggh系统布置图3
GGH Arrangement Sketch in power plant GGH在电厂里的布置简图
Flue Gas and Clean Gas flow direction 原烟气和净烟气流向
2. Main Configuration Unit 主要组成部分
• • • • • Rotor and Casing Thrust Bearing and Guide Bearing Drive Unit (main drive motor and standby drive motor) Heating elements Seal frame system (circumferential and radial seal frame including upper side and bottom side) Valve station Soot blower system (cleaning system) Seal air fan Purge gas fan Rotation monitoring system • • • • • 转子和壳体 支撑轴承和导向轴承 驱动单元（主驱动马达和备用驱动 马达） 换热元件 密封框架系统（包括上部和下部的 周向密封框架系统和径向密封框架 系统） 阀站 吹灰器系统（吹扫装置） 密封风机 低泄漏风机 转速控制装置
GGH Operation Instruction for Dalate power plant 巴克杜尔GGH说明 达拉特电厂GGH吹灰器说明
主讲人: 黄海烽 无锡巴克杜尔技术有限公司
主要培训内容
• Balcke-durr Company Introduction • Operation Principle • Main Configuration Unit • Sealing System • Cleaning System • Operation Process • Maintenance • • • • • • • 巴克杜尔公司介绍 运行原理 主要组成部分 密封系统 吹扫系统 操作规程 维护保养
GGH运行过程中为了减少原烟气向大 气中及净烟气侧泄漏，我们采取了三 种方法来降低原烟气的泄漏 1. 转子的热端和冷端和固定壳体以及 连接烟道之间的密封是依靠轴向密 封系统完成的，这个密封系统是由 密封框板组成的，这些密封框板是 通过补偿器和一些弹性支撑点和 GGH壳体相连。密封框板将利用已 有的重量通过可调节的弹簧销保持 和转子前部的接触，弹簧张力将可 以给底部足够的压力，同时可以补 偿密封系统的静载荷并产生必要的 压力。 在运行过程中通过弹性支撑的调节 可以在外侧重置密封
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In order to minimize the raw gas passage to the clean gas side by the seal gap as well as the exchange loss, via a purge gas system hot clean gas is blown in through the bottom seals in the rotor compartments. The seal gas pressure is above the raw gas inlet pressure, Usually the pressure of outlet purge gas should be higher 0.5kpa than the inlet raw gas. in so doing additionally a seal gas of the compartment is achieved. The flue gas flowing through the GGH has a higher pressure than the ambient atmosphere. Therefore, all passages through the casing shell must be sealed by seal air. The seal air is drawn by a fan and preheated by a seal air heater. The outlet seal air pressure should be higher 4kpa. The temperature of outlet seal air should be 50 to 80 degree. Pipes supply seal air to the following components: the shaft sealing at the top side in the area of the guide bearing the shaft sealing at the bottom side in the area of the thrust bearing the passage of the pinion shaft the bearing for the soot blower at the hot end the bearing for the soot blower at the cold end
Balcke-durr Company Introduction 巴克杜尔公司介绍
1. Operation Principle
The Gas- Gas- Heat Exchanger/ GGH of a wet FGD system is used to reheat the flue gas leaving the scrubber prior to entering the stack. • The GGH mainly consists of a rotor with several compartments which carry heating element storage. A rotor- casing with four connecting ducts for in- and outlet of the treated and untreated gas flow and a sealing system which minimizes the leakage of untreated gas into the clean gas flow complete the GGH. • The heating elements consist of profiled, enameled metal sheets, which absorb heat from the raw gas upstream of the scrubber thus cooling the gas flow. As the storage rotates continuously into the clean gas flow, the heat is released to the treated gas thus reheating the gas flow. Raw gas and clean gas pass through the heating elements in counterflow. The hot raw gas enters from the bottom side whereas the cold clean gas enters at the top; thus the cold end of the GGH is located at its top. • Material and profile of the heating elements are selected in order to resist corrosion, allow for a high heat transfer combined with low flow resistance and easy cleaniAS-GAS-Heater是用来加热从吸收 塔出来到进入烟囱之前的净烟气的。GGH主要是由一个 带隔仓的转子（该转子隔仓装有换热元件）、壳体及带四 个过渡烟道接口（原烟气和净烟气侧进、出口）组成。减 少原烟气向净烟气泄漏的密封系统构成了完整的GGH。 传热元件是由成波形的、镀有搪瓷的金属薄片组成，它可 以吸收逆向进入吸收塔的原烟气中的热量而达到冷却气流 的作用，蓄好热量的换热元件持续转入净烟气，并释放热 量从而加热气流。原烟气和净烟气以逆向通过换热元件， 热的原烟气从底部进入同时冷的净烟气从顶部进入，因此 GGH的冷端位于顶部。为了防止腐蚀，换热元件的材料 和波形必须经过选择，同时可以使其的传热系数高、流动 阻力小并且易于清洁。