浓相气力输灰系统采用了先进成熟的管道二相流技术，实现粉料颗粒的高效、可靠、低能耗、长距离输送;是燃煤电锅炉飞灰处理的理想设备[系统]。

　　The dense phase pneumatic ash conveying system adopts advanced and mature pipeline two-phase flow technology to achieve efficient, reliable, low-energy consumption, and long-distance transportation of powder particles; It is an ideal equipment [system] for fly ash treatment of coal-fired power boilers.

　　二、系统工艺流程

　　2、 System Process Flow

　　本系统由仓泵、气源、管道和灰库等部分组成，采用集中程序控制方式，实现系统设备的协调有序运行。

　　This system consists of warehouse pumps, gas sources, pipelines, and ash storage, and adopts centralized program control to achieve coordinated and orderly operation of system equipment.

　　系统采用F型上引式流态化仓泵作为关键输送设备，仓泵直接连接在电除尘器灰斗下，接受电除尘器收集的飞灰，同时采用空气压缩机作为动力源，通过密闭的管道，在高浓度、低流速的状态下，把飞灰输送至贮灰库。

　　The system adopts an F-type upward fluidized bed bin pump as the key conveying equipment. The bin pump is directly connected to the ash hopper of the electrostatic precipitator, receiving the fly ash collected by the electrostatic precipitator. At the same time, an air compressor is used as the power source to transport the fly ash to the ash storage silo through a closed pipeline under high concentration and low flow rate conditions.

　　三、浓相气力输灰系统典型设备配置1.流态化仓泵   F型上引式流态化仓泵为一耐疲劳,耐磨损的低压容器，仓泵本体上封头内集成有气动进料阀，以控制飞灰进入仓泵，下封头设一流化气室，内装流化盘，流化气室与进气管道相联，并通过气动进气阀控制压缩空气的流入，出料管从流化盘中心附近向上引出泵体并与气动出料阀相联，出料阀控制灰气混合物排入管道;为满足自动控制的要求，仓泵体上还装有料位计和压力传感器。

　　3、 Typical equipment configuration for dense phase pneumatic ash conveying system: 1. Fluidized bed bin pump F-type upward fluidized bed bin pump is a low-pressure vessel that is fatigue resistant and wear-resistant. The upper head of the bin pump body is integrated with a pneumatic feed valve to control the entry of fly ash into the bin pump. The lower head is equipped with a fluidized bed chamber, which is connected to the inlet pipeline and controls the inflow of compressed air through the pneumatic inlet valve. The discharge pipe leads out the pump body from near the center of the fluidized bed and is connected to the pneumatic discharge valve. The discharge valve controls the discharge of the ash gas mixture into the pipeline; To meet the requirements of automatic control, the bin pump body is also equipped with a level gauge and pressure sensor.

　　2.气源系统

　　2. Gas source system

　　气源由空气压缩机压缩空气净化过滤设备及贮气罐等组成。空压机一般采用流量10~20m3/min压力0.8MPa的螺杆式空压机，对于连续运行工况，螺杆式空压机比活塞往复式空压机具有更高的可靠性，贮气罐起到稳定压力、缓冲用气、冷却除水等作用，为满足间歇用气的工况要求，一般选用较大容量的贮气罐，由于空压机排出的压缩空气中含有大量的水份，包括液态水份和气态水份，这些水份对飞灰输送是不利的，可采用多级过滤除去液态水份，同时采用干燥机[冷冻干燥机或吸附式干燥机]除去部分气态水份，降低压缩空气露点，以防止和飞灰混和时产生结露、结块等现象。3.输送管道

　　The air source consists of compressed air from an air compressor, air purification and filtration equipment, and gas storage tanks. Generally, screw air compressors with a flow rate of 10-20m3/min and a pressure of 0.8MPa are used for air compressors. For continuous operation, screw air compressors have higher reliability than piston reciprocating air compressors. The air storage tank plays a role in stabilizing pressure, buffering gas, cooling and removing water. In order to meet the requirements of intermittent gas use, larger capacity air storage tanks are generally selected. Due to the large amount of moisture, including liquid and gaseous moisture, in the compressed air discharged by the air compressor, which is not conducive to fly ash transportation, multi-stage filtration can be used to remove liquid moisture. At the same time, a dryer [freeze dryer or adsorption dryer] can be used to remove some gaseous moisture, reduce the dew point of compressed air, and prevent condensation, agglomeration and other phenomena when mixed with fly ash. 3. Transportation pipeline

　　由于系统输送流速较低，输灰管道可采用普通无缝钢管，壁厚一般6 ~ 8mm。根据出力要求及输送距离，采用管径般有以下几种规格: DN65. DN80. DN100和DN125. 远距离输送时，为降低末端输送流速，可采用输送管道变径方式，输送管道弯头也可采用耐磨管或无缝钢管背部加厚。

　　Due to the low conveying flow rate of the system, ordinary seamless steel pipes with a wall thickness of generally 6~8mm can be used for the ash conveying pipeline. According to the output requirements and conveying distance, there are generally several specifications of pipe diameters used: DN65, DN80, DN100 and DN125. When conveying at a long distance, to reduce the end conveying flow rate, the conveying pipeline diameter can be changed, and the conveying pipeline elbow can also use wear-resistant pipes or seamless steel pipe back thickening.

　　4.自动控制系统

　　4. Automatic control system

　　本系统整个工艺流程采用计算机集中程序控制，全自动运行。运行人员只需监视控制系统运行显示状态。同时由于设有完善的故障报警系统，故障处理和维护都十分方便。

　　The entire process of this system is controlled by a computer centralized program and runs fully automatically. Operators only need to monitor the display status of the control system operation. At the same time, due to the comprehensive fault alarm system, fault handling and maintenance are very convenient.

　　四、系统控制过程特点如下

　　4、 The characteristics of the system control process are as follows

　　程序控制器根据输入信号，通过程序运行输出来控制整个系统工艺流程。一台程序控制器可同时控制多台仓泵协调运行。系统还设有现场控制箱，可进行现场手动操作，以满足调试和现场故障处理要求。

　　The program controller controls the entire system process flow through program execution output based on input signals. A program controller can simultaneously control the coordinated operation of multiple bin pumps. The system also has an on-site control box that can be manually operated on site to meet the requirements of debugging and on-site fault handling.

　　程序控制器在控制工艺流程的同时，动态显示各运行参数状态，给出设备故障报警信自动进行部分故障紧急处理。

　　The program controller dynamically displays the status of various operating parameters while controlling the process flow, and provides equipment fault alarm signals for automatic emergency handling of partial faults.

　　系统运行参数在控制器上可动态自由设定和调整，因此具有极大的灵活性和适应性。

　　The system operating parameters can be dynamically and freely set and adjusted on the controller, thus having great flexibility and adaptability.

　　系统运行参数在控制器上可动态自由设定和调整，因此具有极大的灵活性和适应性。

　　The system operating parameters can be dynamically and freely set and adjusted on the controller, thus having great flexibility and adaptability.

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