濃相氣力輸灰系統(tǒng)采用了先進(jìn)成熟的管道二相流技術(shù)，實(shí)現(xiàn)粉料顆粒的高效、可靠、低能耗、長(zhǎng)距離輸送;是燃煤電鍋爐飛灰處理的理想設(shè)備[系統(tǒng)]。

　　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、系統(tǒng)工藝流程

　　2、 System Process Flow

　　本系統(tǒng)由倉(cāng)泵、氣源、管道和灰?guī)斓炔糠纸M成，采用集中程序控制方式，實(shí)現(xiàn)系統(tǒng)設(shè)備的協(xié)調(diào)有序運(yùn)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.

　　系統(tǒng)采用F型上引式流態(tài)化倉(cāng)泵作為關(guān)鍵輸送設(shè)備，倉(cāng)泵直接連接在電除塵器灰斗下，接受電除塵器收集的飛灰，同時(shí)采用空氣壓縮機(jī)作為動(dòng)力源，通過(guò)密閉的管道，在高濃度、低流速的狀態(tài)下，把飛灰輸送至貯灰?guī)臁?/p>

　　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、濃相氣力輸灰系統(tǒng)典型設(shè)備配置1.流態(tài)化倉(cāng)泵   F型上引式流態(tài)化倉(cāng)泵為一耐疲勞,耐磨損的低壓容器，倉(cāng)泵本體上封頭內(nèi)集成有氣動(dòng)進(jìn)料閥，以控制飛灰進(jìn)入倉(cāng)泵，下封頭設(shè)一流化氣室，內(nèi)裝流化盤，流化氣室與進(jìn)氣管道相聯(lián)，并通過(guò)氣動(dòng)進(jìn)氣閥控制壓縮空氣的流入，出料管從流化盤中心附近向上引出泵體并與氣動(dòng)出料閥相聯(lián)，出料閥控制灰氣混合物排入管道;為滿足自動(dòng)控制的要求，倉(cāng)泵體上還裝有料位計(jì)和壓力傳感器。

　　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.氣源系統(tǒng)

　　2. Gas source system

　　氣源由空氣壓縮機(jī)壓縮空氣凈化過(guò)濾設(shè)備及貯氣罐等組成?？諌簷C(jī)一般采用流量10~20m3/min壓力0.8MPa的螺桿式空壓機(jī)，對(duì)于連續(xù)運(yùn)行工況，螺桿式空壓機(jī)比活塞往復(fù)式空壓機(jī)具有更高的可靠性，貯氣罐起到穩(wěn)定壓力、緩沖用氣、冷卻除水等作用，為滿足間歇用氣的工況要求，一般選用較大容量的貯氣罐，由于空壓機(jī)排出的壓縮空氣中含有大量的水份，包括液態(tài)水份和氣態(tài)水份，這些水份對(duì)飛灰輸送是不利的，可采用多級(jí)過(guò)濾除去液態(tài)水份，同時(shí)采用干燥機(jī)[冷凍干燥機(jī)或吸附式干燥機(jī)]除去部分氣態(tài)水份，降低壓縮空氣露點(diǎn)，以防止和飛灰混和時(shí)產(chǎn)生結(jié)露、結(jié)塊等現(xiàn)象。3.輸送管道

　　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

　　由于系統(tǒng)輸送流速較低，輸灰管道可采用普通無(wú)縫鋼管，壁厚一般6 ~ 8mm。根據(jù)出力要求及輸送距離，采用管徑般有以下幾種規(guī)格: DN65. DN80. DN100和DN125. 遠(yuǎn)距離輸送時(shí)，為降低末端輸送流速，可采用輸送管道變徑方式，輸送管道彎頭也可采用耐磨管或無(wú)縫鋼管背部加厚。

　　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.自動(dòng)控制系統(tǒng)

　　4. Automatic control system

　　本系統(tǒng)整個(gè)工藝流程采用計(jì)算機(jī)集中程序控制，全自動(dòng)運(yùn)行。運(yùn)行人員只需監(jiān)視控制系統(tǒng)運(yùn)行顯示狀態(tài)。同時(shí)由于設(shè)有完善的故障報(bào)警系統(tǒng)，故障處理和維護(hù)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、系統(tǒng)控制過(guò)程特點(diǎn)如下

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

　　程序控制器根據(jù)輸入信號(hào)，通過(guò)程序運(yùn)行輸出來(lái)控制整個(gè)系統(tǒng)工藝流程。一臺(tái)程序控制器可同時(shí)控制多臺(tái)倉(cāng)泵協(xié)調(diào)運(yùn)行。系統(tǒng)還設(shè)有現(xiàn)場(chǎng)控制箱，可進(jìn)行現(xiàn)場(chǎng)手動(dòng)操作，以滿足調(diào)試和現(xiàn)場(chǎng)故障處理要求。

　　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藝流程的同時(shí)，動(dòng)態(tài)顯示各運(yùn)行參數(shù)狀態(tài)，給出設(shè)備故障報(bào)警信自動(dòng)進(jìn)行部分故障緊急處理。

　　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.

　　系統(tǒng)運(yùn)行參數(shù)在控制器上可動(dòng)態(tài)自由設(shè)定和調(diào)整，因此具有極大的靈活性和適應(yīng)性。

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

　　系統(tǒng)運(yùn)行參數(shù)在控制器上可動(dòng)態(tài)自由設(shè)定和調(diào)整，因此具有極大的靈活性和適應(yīng)性。

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

　　本文由 氣力輸送系統(tǒng)  友情奉獻(xiàn).更多有關(guān)的知識(shí)請(qǐng)點(diǎn)擊  http://www.aesw.org.cn/   真誠(chéng)的態(tài)度.為您提供為全面的服務(wù).更多有關(guān)的知識(shí)我們將會(huì)陸續(xù)向大家奉獻(xiàn).敬請(qǐng)期待.

　　This article is a friendly contribution from the pneumatic conveying system For more related knowledge, please click http://www.aesw.org.cn/ Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.