林德3PE防腐方案Word格式.docx

1、Project overview1、工程概况.1-3Fabrication reference2、编制依据.3-3Construction principle三、施工原则.3-33PE anticorrosive production process 四、3PE防腐生产工艺流程.4-93PE anticorrosive specific production steps5、3PE防腐具体制作步骤.9-13Heat shrinkable tape anticorrosive concrete steps六、热收缩带防腐具体步骤.14-15Safety attentions 七、安全注意事项.16

2、-16Project Overview一、工程概况 This project is Linde Huayi（Chongqing） Gases Co., Ltd 1 Billion Nm3/year Syngas CO/H2 project, located in Chongqing（Changshou） Chemical Industry Park, and the main work contains substation、compression unit、power absorption unit、washing unit、raw gas compressor unit、High temp

3、erature shift unit etc. 本项目为林德化医（重庆）气体有限公司10 亿Nm3/年合成气制备CO/H2 项目，位于重庆（长寿）化工园区内， 其中主体工作包括变电所、压缩单元、变电吸附单元、洗涤单元、原料气压缩单元、高温变换单元等。Underground pipeline contains circulating water system, water system, water supply and drainage system, a total of about 1744m welding pipe extension, Dia-in total of 10070 in

4、ch, buried steel pipe anticorrosion methods 3PE coating, to ensure that the underground pipeline anticorrosion construction safety, high quality, efficient completion of the project, especially the preparation of this plan.地下管道包括循环水系统、工业水系统、给排水系统，管道共计延长米约1744m，焊接Dia-in共计10070寸，埋地钢管防腐方法采用3PE涂层防腐，为保证地

5、下管道防腐施工安全、优质、高效完成，特编制本方案。Fabrication reference 二、编制依据1）Linde related drawing and technical standard 林德相关图纸、技术标准2）Polyethylene coating for buried steel pipeline埋地钢制管道聚乙烯防腐层. （GB/T23257-2009）3）Water supply and drainage pipeline engineering construction and acceptance给排水管道工程施工及验收规范.（GB50268-97）4）Petrol

6、eum and chemical equipment and pipeline technical specification for the coating anticorrosion石油化工设备和管道涂料防腐蚀技术规范.（SH3022-1999）5）Technical code for construction safety in petrochemical石油化工施工安全技术规程 .（SH3505-99）6）Petrochemical industry specification for construction and acceptance of water supply and dr

7、ainage pipeline石油化工给排水管道施工及验收规范. （SH3533-2003）7）Steel surface before application of paint and rust grades and preparation grade涂装前钢材表面锈蚀等级和除锈等级.（GB8923-88）Construction Principle三、施工原则 Underground pipeline, pipe anti-corrosion work by professional 3PE coating manufacturers, in Chongqing area 3PE coat

8、ing technology and scale of production to reach the coastal areas of the corrosion and scale, is now the Chongqing area 3PE pipeline coating production in the range of 20-950mm, the diameter more than 950mm pipe using thermal belt winding anticorrosion, and all fittings, mending, welding using the s

9、ame PE shrink with anti-corrosion, anti-corrosion processing plant in the above work focused on the complete, reach the maintenance period, transported into the construction site installation, pressure test after passing the required repairing and mending.地下管道、管件防腐工作由专业3PE防腐厂家完成，鉴于重庆地区3PE涂敷技术及生产规模达不

10、到沿海地区的防腐水平及规模，现目前重庆地区3PE管道防腐生产范围在20-950mm，对于管径超过950mm的管道采用热缩带缠绕防腐，且所有管件、补伤、焊口同样采用聚乙烯热缩带防腐，以上防腐工作集中在加工厂内完成，达到养护期后，运入施工现场安装，试压试验合格后按规定补口补伤。四、3PE anticorrosive production process 3PE管道防腐生产工艺流程4.1 The following 950mm pipeline anticorrosion process 950mm以下管道防腐流程Bottomsprayepoxy powder 底层喷涂环氧粉末middle leve

11、lextrusion claddingadhesive 中层挤出包覆胶粘剂outer sphereextrusion claddingPE 外层挤出包覆PE 1）Pipe sandblasting管道喷砂2）Pipeline through the lines into the high-frequency heating to heat, after the glue machine glue.管道经过流水线进入高频加热机进行加热，经过涂胶机上胶。3）High frequency heating equipment to polyethylene particles of molten po

12、lyethylene高频聚乙烯加热设备将聚乙烯颗粒熔化4）Pipeline coating machine to start coating 3PE 管道包覆机开始包覆3PE5）Enter the cooling production line进入冷却生产线6）Inlet pipe grinding processing进入管口打磨处理7）Inspection and identification of issuance procedures indicated factory 检查合格并注明标识发放出厂手续4.2 More than 950mm pipeline, welding, pipe

13、, heat shrinkable tape anticorrosive process950mm以上管道、焊口、管件、热收缩带防腐流程五、3PE anticorrosive specific production steps 3PE防腐具体制作步骤5.1 3PE pipeline anticorrosion 3PE管道防腐5.1.1 Preparatory process准备工序1）According to the production task list in the steel pipe specifications, adjust all transmission lines on b

14、oth sides of the driving wheel of the distance and angle. De-rusting production line pipe bottom height from 540 mm; 3PE coating production line pipe end away from 630mm.根据生产任务单中的钢管规格，调整好所有传动线两侧传动轮的距离和角度。除锈生产线管底离地高度 540 mm; 3PE防腐生产线管底离地630mm。2）Adjust the good adhesive and PE extruder of front and re

15、ar position.调整好胶粘剂和PE挤出机的前后位置。3）Adjust the position and angle of silicon rubber.调整硅胶轮的位置和角度。4）Adjust the spray gun position in radial and point to the pipe axis, the discharge needle into the steel pipe surface distance 120-150mm.调整喷粉枪的位置在钢管径向并指向钢管轴心，放电针针尖到钢管表面的距离120-150mm。5）Size extruder in the pla

16、n started 3 hours before the start of heating.大小挤出机在计划开工前3小时开始加热。6）1 hour before the start of PE raw material preheating and drying, the drying temperature is not higher than 80 DEG c.计划开工前1小时进行PE原料预热烘干，干燥温度不高于80。7）Check the operation condition of equipment, give the transmission parts lubricating o

17、il filling; the fastening shaft coupling screws, cross shaft and the expansion joints to add enough oil; inspection of lifting mechanism position and limit device reliability.检查设备运行情况，给各传动部位加注润滑油；紧固传动轴的联结螺丝，给十字轴和伸缩节加足油；检查升降机构的位置及限位器的可靠性。8）Anticorrosion epoxy powder coating, adhesive, polyethylene th

18、eir quality shall meet the specifications, and through inspection and acceptance.防腐用的环氧粉末涂料、胶粘剂、聚乙烯其质量应满足规范要求，并经过检查验收。5.1.2 Bare pipe tube裸管上管a.According to the production, task orders to pipe transport tube on the platform.根据生产任务单将钢管转运到上管平台。b.Inspection of the appearance quality of steel pipe, to s

19、ee if there are any extrusion deformation, scratches and other defects, such as timely to make a mark, put its material unqualified area or repair area.检查钢管的外观质量，察看有无挤压变形、碰伤等缺陷，如有及时作出标记，将其放到材料不合格区或修复区。5.1.3 Blast cleaning抛丸除锈1）Rust must be checked and cleared both inside and outside the pipe surface

20、 greasy dirt, burrs, attachment and other impurities.除锈前必须检查并清除钢管内外表面的油污、毛刺、附着物等杂质。2）Pipe surface temperature is below 3 steel pipe must be heated to 40 60 , then the pipe uniform through the de-rusting machine, de-rusting grade reaches GB/T8923-88 standard Sa2.5 grade, the anchor lines to a depth o

21、f 50 - 75 M.钢管表面温度低于3时钢管要加热到4060，然后将钢管匀速通过除锈机，除锈等级达到GB/T8923-88标准的Sa2.5级，锚纹深度达到5075m。3）Rust after placement of 4 hours or more or return stainless steel pipes need to rust.除锈后放置4小时及以上或返锈钢管须要重新除锈。5.1.4 3PE top pipe 3PE上管a.On the front tube in a deposition-management platform inspection and removal of

22、 steel pipe with inner and outer surface of the burr, dust and other impurities. If defects to return material unqualified area or repair area.上管前在存管平台上检查并去除钢管内外表面的毛刺、灰尘等杂质。如有缺陷返回材料不合格区或修复区。b.The paste evenly in the protective paper （100mm width）, and on its left side of 10 mm wide dont spread the p

23、aste; and then the protective paper formation attached to the pipe end, note no smear paste side at a distance of nozzle inner.将浆糊均匀涂抹在防护纸（100mm宽）上，并在其一侧留10宽不要涂浆糊；然后将防护纸平整贴附在钢管管端，注意没有抹浆糊的一侧在距管口的内侧。c.The pipe into the pipe pulling device, through the tube is put into the transmission line steel pipe;

24、 pipe and nozzle distance as close as possible to, pay attention to the good joint.将管放到拔管器上，通过拔管器把钢管放到传动线上；上管时前后管口的距离尽量靠近，注意对好接头。d.Before the start of production process in a timely and clear driving wheel on the dust, debris.开工前和生产过程中及时清理传动轮上的灰尘、杂物。5.1.5 Intermediate frequency heating中频加热1）Start th

25、e cooling water pressure pump, check if the heater water outlet pipe of the water cooling system in each case whether there is abnormal.起动冷却水加压泵，检查中频加热器冷却系统每个出水管的出水情况是否有异常。2）Starting the drive line, steel pipe to move uniformly.启动传动线，让钢管匀速前进。3）Start frequency heater, slowly rotating heating power ad

26、justment knob, the steel temperature to 200 - 220 , for at least 30 minutes retest once.启动中频加热器，缓慢旋转加热功率调整旋钮，将钢管温度加到200220内，至少30分钟复测一次。4）After work to stop and start in reverse order. 工作完毕时停止过程与启动顺序相反。5.1.6 Dry dusting 喷粉a. After heating the steel pipe into the spray box, open the spraying equipment

27、; according to the pipe size identify open equipment number. The coating thickness to achieve the requirements in Table 1; coating on the surface of a steel pipe to be uniform.加热后的钢管进入喷涂箱后，打开喷涂设备，根据钢管的大小确定打开的设备数量。使涂层厚度达到表1要求；涂层在钢管表面要均匀。b.A pressure of not more than 0.1MPa, two pressures shall not ex

28、ceed 0.05MPa.一次气压不宜超过0.1MPa,二次气压不宜超过0.05MPa。Table1表1Steel pipe DN（mm）钢管公称直径Epoxy powder coating环氧粉末涂层（m）Adhesive coating胶粘剂涂层Minimum thickness of anticorrosive coating防腐层最小厚度（mm）Ordinary grade普通级（G）Strengthen grade加强级（S）DN10080170-2501.82.5100DN2502.02.7250DN5002.22.9500DN8003.2DN8003.03.75.1.7 Adhe

29、sive, PE winding胶粘剂、PE缠绕1）According to the pipe size and the transmission line speed regulation of the speed of extruder, cross-linking agent, polyethylene thickness （coating thickness gauge test） according to table 1 control:根据钢管的大小和传动线的速度调节好挤出机的转速，胶联剂、聚乙烯层厚度（用涂层测厚仪检测）按表 1控制：2）Ensure that the thickness of the coating, control of seam width of 15 5 .保证防腐层厚度，控制压缝宽度155。3）After work in time to clear up the powder, spray gun and the pipeline, to prevent fouling, prepare for the next us