山东华拓环保电脉冲除尘器

点击次数:192   更新时间2017-06-11     【关闭分    享:


 
 

一、前言
1. Foreword
电脉冲除尘器是针对火力发电厂灰库、渣库工况条件专门设计的高效净化专用设备,它采用了先进的清灰技术,具有气体处理能力大,净化效果好,结构简单,工作可靠,维修量小等优点。在结构设计上已考虑到了其布置特点,产品密封性好,可露天布置。
Electric pulse dust collector is a high efficiency purified special equipment, which is designed for dust bunker, ash silo of thermal power plant. It adopts advanced dust removal technology, which has such features as large gas processing capacity, good purifying effect, simple structure, reliable operation and less maintenance. Consideration has been taken into its layout characteristic on structure design, the sealing property of product is good and the product can be laid in the open air.
 
  本产品经电站长期使用证明:性能稳定,运行可靠,深受设计选用单位及用户的好评。
After being used for long time by power station, the product has proved that: steady performance, reliable operation, and has gained high opinions by the units selecting the design and users.
 
二、技术参数
2. Technical parameters
 
2.1电脉冲除尘器型号含议:
2.1Model and signification of electric pulse dust collector:
 
 
2.2技术指标
2.2Technical indicators


2.2.1过滤风速
2.2.1Filtering wind speed
 
过滤风速是指气体通过滤袋的速度,可按下式计算:
Filtering wind speed is the speed gas passing through filter bag, which can be calculated as per following formula:
 
V=Q/(60·F)
式中: V - 过滤风速(m/min)
   Q - 处理气体量(m3/h)
F – 过滤面积(m2)
V=Q/(60·F)
In formula: V - filtering wind speed (m/min)
Q - gas processing quantity (m3/h)
F - filtering area (m2)
 
根据灰库工况,一般选择V < 1m/min
According to the working condition in ash storage bin, generally select V < 1m/min.
 
2.2.2滤袋材质(滤料)
2.2.2Filter material
 
滤料根据工况条件及除尘要求选择。
Filter material is selected according to the working condition and dust removal requirements.


表一
Table 1
品种
Type
使用温度℃
Application temperature ℃
耐化学性
Chemical resistance
连续
Continues
瞬间
Instant
耐酸性
Acid resistance
耐碱性
Alkali resistance
聚酯纤维
Polyester fiber
130 150
Strong

Medium
诺美科斯
Nuomeikesi
204 240
Medium

Medium
玻璃纤维
Glass fiber
260 300
Medium

Medium
2.2.3清灰气源
2.2.3Dust removal air supply
 
2.2.3.1气源品质
压力露点 -20 ℃
含油量 5ppm
含尘量 5mg/m3
2.2.3.1Air supply quality
Pressure dew point -20 ℃
Oil content 5ppm
Dust content 5mg/m3
 
2.2.3.2气源压力
2.2.3.2Air supply pressure
0.4~0.6MPa
 
2.2.4耗气量
耗气是一可按下式计算:
Q=α·n·q/T
式中: Q – 每台电脉冲除尘器耗气量(m3/min)
n – 电磁阀数量(个)
T – 脉冲周期(min)
q – 每个电磁阀喷吹时的耗气量(m3),当喷吹压力0.6MPa,喷吹时间0.2s时,q=0.03m3
α– 裕度系数,取1.2
2.2.4Air consumption
Air consumption can be calculated as per following formula:
Q=α·n·q/T
In formula: Q - air consumption of each electric pulse dust collector (m3/min)
n – quantity of solenoid valve (pcs)
T - pulse period (min)
q - air consumption (m3)when each solenoid valve blows, when blowing pressure is 0.6MPa and blowing time is 0.2s, q=0.03 m3
α- tolerance coefficient, take 1.2
 
2.3电脉冲除尘器和种类选取
2.3Selection types of electric pulse dust collector
 
  本除尘器在结构上有两种形式,一种为布袋侧取式结构,另一种为布袋上抽式结构,分别适应不同的场合。
The dust collector has two types of structure, one is side-draw bag-type structure, the other is up-draft bag-type structure, which is suitable for different situations.
 

2.4技术参数(见下表)
2.4Technical parameters (see following table)
    型号
    Model
技术参数
Technical parameters
DMC-24 DMC-36 DMC-48 DMC-60 DMC-72 DMC-84
过滤面积(m2)
Filtering area (m2)
22 34 45 57 68 79
滤袋数量
Quantity of filter bag
24 36 48 60 72 84
滤袋规格︱mm︱
Spec. of filter bag︱mm︱
φ130×1800 mm φ130×2500mm
设备阻力︱KPa︱
Equipment resistance︱KPa︱
1.0-1.2Kpa
除尘效率
Dust removal efficiency
99-99.5%
过滤风速︱m/min︱
Filtering wind speed︱m/min︱
0.8-1.2m/min
处理风量︱m3/h︱
Processing air volume︱m3/h︱
1320-
2640
2040-
4080
2700-
5400
3400-
6800
4080-
8160
4740-
9480
喷吹压力︱MPa︱
Blowing pressure︱MPa︱
0.5-0.7MPa
喷吹风量︱m3/h︱
Blowing air volume
︱m3/h︱
0.072-
0.144
0.108-
0.216
0.144-
0.288
0.18-
0.36
0.216-
0.432
0.252-
0.504
输入电压(v)
Input voltage(v)
∽220v
 
三、结构与工作原理
三. Structure and working principle
3.1结构简介
Structure introduction
 
  电脉冲除尘器的基本结构由四大部分组成.
The basic structure of electric pulse dust collector is composed of four parts.
 
a.上箱体:包括可掀起的盖板(或紧固式上盖板)和出风口。
a. Upper tank: including removable cover plate (or fastening upper cover plate) and air outlet.


b.中箱体:包括多孔板、检修门、滤袋、龙骨等。
b. Middle tank: including perforated plate, access door, filter bag, keel.
 
c.下箱体:包括测压接头等。
c. Bottom tank: including pressure testing adapter.
 
d.喷吹系统:包括脉冲控制仪
d. Blowing system: including pulse controller, electromagnetic pulse valve, blowing pipe, air bag.
 
3.2工作原理
Working principle
 
  含尘气体由进风口进入除尘器箱体内,细小尘粒由于滤袋的多种效应作用,被滞阻在滤袋外壁。净化后的气体通过滤袋经文氏管从上箱体出风口排出。随着使用时间的增长,滤袋表面吸附的粉尘增多,滤袋的透气性减弱,使除尘器阻力不断增大。为保证除尘器的阻力控制在限定的范围之内,由脉冲控制仪发出信号,循序打开电磁脉冲阀,使气包内的压缩空气由喷吹管各喷孔喷射到对应的文氏管(称为一次风),并在高速气流通过文氏管时诱导数倍于一次风的周围空气(称为二次风)进入滤袋,造成滤袋瞬间急剧膨胀,由于反向脉冲气流的冲击作用很快消失,滤袋又急剧收缩,这样使积附在滤袋外壁上的粉尘被清除。落下的灰尘进入灰库。
Dusty gas comes into dust collector body from air inlet, fine dust particles are separated at external wall of filter bag due to the effect of filter bag. Purified gas passes through the filter bag as well as the venturi tube and then exhausts from the air outlet of upper tank. As the increase of service time, more dust is adhered to the surface of filter bag and the air permeability of filter bag is lower so that the resistance of dust collector increases continuously. In order to ensure the resistance of dust collector is controlled within limit range, the pulse controller sends out a signal to open electromagnetic pulse valve in proper order, the compressed air in air bag is ejected to corresponding venturi tube by each jet hole on blowing pipe (called primary air), when high speed air flow passes through venturi tube, the ambient air (called secondary air), of which the induction coefficient is twice as primary air, comes into filter bag, resulting in instant rapid expansion of filter bag, because of the impact effect of reverse pulse air flow, it disappears quickly, the filter bag retracts rapidly again, so that the dust accumulated at external wall of filter bag is removed. The fallen dust comes into dust bunker.


  由于清灰是轮流向几组滤袋分别进行,并不切断需要处理的含尘空气,所以在清灰过程中,除尘器的处理能力不变。
Dust removal respectively carries out to several filter bags in turn and do not cut off the dusty air required to be handled, so during dust removal, the handling capacity of dust collector is constant.
 
  喷吹系统简况:喷吹系统的组成如图三,脉冲阀A端接压缩空气气包,B端接喷吹管。脉冲阀是背压式控制阀,控制动作由控制仪发出指令。在控制仪无信号输出时,控制阀的活动铁芯封住排气口,脉冲阀处于关闭状态;当控制仪发出信号时,控制阀将脉冲背压室与大气相通,脉冲阀开启,压缩空气由气包通过脉冲阀经喷吹管小孔喷进文氏管,造成滤袋内瞬时正压,实现清灰。
Blowing system introduction: the composition of blowing system is as fig. 3, port A of pulse valve connects to the air bag of compressed air, port B connects to blowing pipe. Pulse valve is a back-pressure control valve, to control actions by the instruction sent out by controller. When controller does not send out signal, the movable iron core of control valve seals off the air outlet and pulse valve is under off state; when controller sends out a signal, control valve makes pulse back pressure chamber connect with atmosphere, pulse valve opens, then compressed air is ejected in venturi tube from the holes of blowing pipe via pulse valve, resulting in instant positive pressure in filter bag, so carry out dust removal.
 
四、主要配件
4. Main accessories
4.1脉冲控制仪
Pulse controller
 
  脉冲控制仪是电脉冲除尘器的主要控制装置。它输出的信号控制电磁脉冲阀,喷吹的压缩空气对滤袋循序清灰,使除尘器的阻力保持在设定的范围内,以保证除尘器的处理能力和除尘效率。脉冲宽度和脉冲周期是衡量冲控制仪的两个重要参数。根据用户要求,现提供两种型号控制仪:一种为意大利Mecair公司原装进口产品,一种为国产优质产品。它们都具有定时清灰,定压差清灰优点,同时具有全封闭的外壳,防尘性能好,安装方便。两种产品有不同的性价比,以满足不同用户要求。
Pulse controller is a main control device of electric pulse dust collector. The signal sent out by it is to control electromagnetic pulse valve, and the blowing compressed air removes dust for filter bag in proper order so that the resistance of dust collector holds within a setting range to ensure the handling capacity of dust collector and dust collection efficiency. Pulse width and pulse period are two important parameters for measuring the pulse controller. According to the requirements of users, now we provide two types of controller: one is originally imported product from Italy Mecair company, the other is the domestic high quality product. Both of them have such features as timing dust removal, dust removal with constant pressure, meanwhile, they have closed casing, good dust proof performance and easy installation. Both products have different performances and price ratios to meet different users’ requirements.
 
4.1.1意大利Mecair公司生产的脉冲控制仪
Pulse controller produced by Italy Mecair company
 
型号:MCS
Model: MCS
 
规格:MCS-4, 8, 12, 16, 20, 24, 28
Spec.: MCS-4, 8, 12, 16, 20, 24, 28
 
电源:AC220V±10% 50HZ
Power supply: AC220V±10% 50HZ
 
输出电压:AC220V
Output voltage: AC220V
 
功率:50W
Power: 50W
 
脉冲宽度:0.01~10S
Pulse width: 0.01~10S
 
脉冲周期:1~1000s
Pulse period: 1~1000s
 
压差输出:4~20mA
Differential pressure output: 4~20mA
 
贮存温度:-20~+80℃
Application temperature: -10~+50℃
 
使用温度:-10~+50℃
Storage temperature: -20~+80℃
 
4.1.2国产脉冲控制仪
Domestic pulse controller
型号:DMK-3CS
Model: DMK-3CS
规格:DMK-3CS-4, 6, 8, 10, 12, 14, 16, 18, 20
Spec.: DMK-3CS-4, 6, 8, 10, 12, 14, 16, 18, 20
输入电压:AC220V+10%~-20%
Input voltage: AC220V+10%~-20%
输出电压:DC 24V
Output voltage: DC 24V
功率:8W
Power: 8W
脉冲宽度:0.03~0.2S
Pulse width: 0.03~0.2S
脉冲间隔:1~30S
Pulse time: 1~30S
压差输出:4~20mA
Differential pressure output: 4~20mA
使用温度:-25~+55℃
Application temperature: -25~+55℃
 
4.2电磁脉冲阀
Electromagnetic pulse valve
 
  电磁脉冲阀是电脉冲除尘器喷吹清灰系统的主要装置,它是向滤袋内喷吹压缩空气的开关,受脉冲控制仪输出信号的控制。它是将脉冲阀(差动气阀)与先导阀(控制阀)组合在一起,除阀体进气口与储气筒金属管连接外,阀体本身无软管连接,造型新颖,结构合理,安装方便,工作可靠,寿命长,清洗力大,耗电最小,阀体采用铝硅合金铸成,经表面处理后具有一定的防腐蚀能力。根据用户需要可提供原装进口件和国产优质件。
Electromagnetic pulse valve is a main device in blowing dust removal system of electric pulse dust collector. It is a switch to blow compressed air to filter bag and is controlled by pulse controller output signal. It is to combine pulse valve (differential air valve) with pilot valve (control valve), except for the connection of the air inlet of valve body and metal pipe of air cylinder, the valve body has such features as no hose connection, new model, reasonable structure, convenient installation, reliable operation, long service time, large cleaning force, minimum power consumption. The valve body is made of aluminum-silicon alloy, after surface treatment, it has anticorrosion capacity. According to the requirements of users, we may offer original imported products and domestic high quality products.
 
4.2.1意大利Mecair公司生产的电磁脉冲阀
Electromagnetic pulse valve produced by Italy Mecair company
 
型号:VEP206
Model: VEP206
 
电压:AC220V
Voltage: AC220V
 
功率:16W
Power: 16W
 
使用温度:-20~+80℃
Application temperature: -20~+80℃
 
寿命:喷吹100万次
Service life: blowing 1 million times
 
4.2.2国产电磁阀
Domestic electromagnetic valve
 
型号:DMF-Z-20
Model: DMF-Z-20
 
电压:DC24V
Voltage: DC24V
 
功率:6W
Power: 6W
 
使用温度:-10~55℃
Service life: blowing 1 million times
 
寿命:喷吹100万次
Application temperature: -10~55℃
 
4.3文氏管
Venturi tube
 
文氏管是清灰系统诱导二次风,加强压力波的重要部件。
Venturi tube is an important part for dust removal system inducing secondary air and for reinforcing pressure wave.
 
4.4滤袋框架(龙骨)
Filter bag frame (keel)
 
能支撑滤袋在负压状态下仍保持有效的过滤面积。采用鼠笼式结构,框架挺拔,刚性好,安装方便。
It is able to support filter bag to hold effective filtering area under negative pressure. Adopt squirrel cage structure, the frame is forceful with good rigidity and is easy to install.
 
4.5滤袋
Filter bag
 
滤袋是过滤含尘气体的部件。除尘器过滤效果的好坏关键在于滤袋材质,用户可根据工况条件及除尘效率等选择适宜滤料。
Filter bag is a part for filtering dusty gas. The material of filter bag is the key to filtering effect of dust collector. Users may select applicable filtering materials according to working condition and dust collection efficiency.
 
五、安装与使用
5. Installation and usage
 
5.1设备起吊时,应注意避免碰损箱体及配件。
5.1 Pay attention to avoid breaking the tank and accessories when lifting equipment.
 
5.2安装前对除尘器各部件进行全面检查,零部件是否完好齐全,如发现缺少损坏或变形者,要修整补齐后方可安装。
5.2 Carry out complete inspection for each part of dust collector before installing, see if the parts are undamaged and complete, if any missing, damage or deformation is found, it shall be repaired before installing.
 
5.3除尘器各法兰之间应嵌入密封填料才能拧紧螺栓,保证箱体密封可靠,防止漏气。
5.3 Insert the seal packing into each flange of dust collector before screwing down the bolts, ensure the tank is sealed and reliable, and prevent air leakage.
 
5.4各人孔,检查门等处均应有密封嵌条,以保证其密封性。
5.4 Each manhole, access door shall have sealing strip to ensure its sealability.
 
5.5滤袋要逐条检查。
5.5 Check filter bag one by one.
 
5.6滤袋安装时必须垂直于固定花板:侧抽式滤袋用卡箍卡于滤袋框架上;上抽式采用弹性涨圈滤袋,安装时先把弹性涨圈压缩,然后放入花板孔内再打开,将滤袋牢固定位,最后将滤袋框架卡于其上。
5.6 It must be vertical to fixed tube sheet when installing filter bag: side-draw filter bag is clipped on filter bag frame by the clamp; up-draft type adopts expansion ring filter bag. When installing, compress the expansion ring firstly, then open after putting in the hole of tube sheet, fix the filter bag firmly, finally fit the filter bag frame on it.
 
5.7喷吹管固定后,其喷吹孔应对准文氏管中心。
5.7 The blowing hole shall be centered on the center of venturi tube after blowing pipe is fixed.
 
5.8气包、电磁脉冲阀喷吹管的连接应可靠密封,不得有漏气现象。
5.8 The connection between air bag and electromagnetic pulse valve blowing pipe shall be reliably sealed, without any air leakage.
 
5.9除尘器进风口、出风口侧连通测压接头以测量阻力。根据阻力上升情况,确定喷吹间隔时间,保证设备正常运行(根据要求可取消阻力测量)。
5.9 Side of air inlet and outlet of dust collector connects to pressure testing adapter to measure resistance. According to the resistance increase situation, determine blowing interval time and ensure normal operation of equipment (cancel resistance measurement as required).
 
5.10喷吹用压缩空气应去污除油,压缩空气在接入除尘器气包前应设油水分离器。
5.10 The compressed air used for blowing, shall be cleaned and removed oil. It shall have oil water separator before compressed air is taken in dust collector.
 
5.11开车步骤(停车步骤与之相反)
5.11 Start steps (stop steps are in reverse)
 
5.11.1泄去油水分离器和储气罐内的凝结水,压缩空气的压力应保持在4~0.6MPa范围内。
5.11.1 Drain out the condensation water in oil water separator and air cylinder. The pressure of compressed air shall hold in the range of 0.4~0.6MPa.
 
5.11.2开控制仪
5.11.2 Start controller
a.合上空气开关,打开脉冲控制仪上的电源开关,开始喷吹。
a. Turn off air switch, turn on the power switch on pulse controller to start blowing.
 
b.检查每一个电磁阀是否动作。如果没有动作,请检查电磁阀的接线是否正确。
b. Check and see if each solenoid valve is active. If no action, please check the wiring of solenoid valve is correct.
 
c.调节脉冲间隔、脉冲宽度的大小。通过脉冲控制仪上的两个旋钮根据工况条件进行调节。
c. Adjust the pulse interval and the size of pulse width. Carry out adjustment through two buttons on pulse controller according to working condition.
 
六、故障原因与排除方法
6. Failure cause and elimination method
 
6.1除尘器投入运行后,应设专人管理维修,熟悉除尘器工作原理及技术性能,掌握调整与维修方法,每班巡回检查,建立运行记录。
6.1 It shall arrange personnel to manage and maintain, familiarize the working principle and technical performance of dust collector, to know well about adjustment and maintenance methods and to carry out itinerant inspection by each shift and establish operating record after dust collector put into service.
 
6.2压缩空气的油水分离器、过滤器、储气罐和气包定期排污放空。
6.2 Drain contamination and empty oil-water separator of compressed air, filter, air cylinder and air bag regularly.
 
6.3压缩空气的过滤材料每隔4-6个月更换一次。
6.3 Change filtering materials of compressed air one time per 4-6 months.
 
6.4电磁脉冲阀定期检查,并更换易损件。
6.4 Check electromagnetic pulse valve regularly and replace wearing parts.
 
6.5经常检查除尘器进、出口压差变化情况,如超过或低于规定范围,必须查明原因,一般通过脉冲控制仪调整喷吹周期来解决。
6.5 Check the differential pressure variation of inlet, outlet of dust collector. If it is above or below the specified range, it must find out the reason, generally, it is settled by adjusting blowing period through pulse controller.
 
6.6各类橡胶密封件应定期更换。
6.6 Various rubber sealing members shall be replaced regularly.
 
6.7排气口如有冒灰现象,应检查滤袋是否脱落破损。
6.7 If dust spreads at air outlet, check filter bag if it is fallen off or broken.
 
6.8如每次清灰后发现排气口冒灰,则属清灰过度,应调整清灰周期。
6.8 If it is found that dust spreads at air outlet after dust removal each time, it is excessive dust removal, so it shall adjust the period of dust removal.
 
6.9应定期检查滤袋完好状况(三个月一次),若有破损应立即更换、修补。修补时应用与滤袋相同材料贴补,严禁只用线对口缝合。布袋一般使用期为1-2年。
6.9 Check filter bag is in good condition regularly (once per three months), if any damage is found, it shall replace and repair immediately. It shall apply same material as filter bag to repair. Do not sew up by threads. Normal service time of cloth bag is 1-2 year.
 
6.10经常保持除尘器本体的清洁,油漆有碰损处应及时涂补,至少每二年刷漆一遍。
6.10 Maintain the cleanness of dust collector frequently. If any painting is broken, it shall be painted in time. It shall be paint once per two years.
 
七、易损件清单
7. Wearing parts list
 
易损件:滤袋φ130×1800
Wearing parts: filter bag φ130×1800
上一篇:电脉冲除尘器
下一篇:没有了

山东华拓节能环保科技有限公司
电话:18953968866  
传真:0539-8111107
邮箱:276827865@qq.com
地址:山东临沂兰山区兰山工业园