Shanghai Daoqin Plastics Co., Ltd.

        ABS plastics, large separation is electrical appliances product, multiple day use product and machine upper small parts. relatively more is, electrical housing/shell, electrical machine housing/shell, table/sheet housing/shell, sheet/plate, decoration material, this material 挑开, especially electroplating, color and other need separation 开.

         chemical 处理, 退镀, 退漆, 但退镀退漆必 must heavy, chemical water has 一定配 ratio, need use anti use product and container, 否则会引起伤害 and other parts. 清洗槽 清洗, rear dry, Color Matching or 放辅助材 material, is improve/increase quality. specialized extrusion machine pelletizing, 但一定 need upper 滤网, 但 滤网按 product requirements 而放.

         recycled polycarbonate (PC) (PC) process process/workflow

         polycarbonate (PC), non crystallization plastics, engineering plastics type. large is textile parts, automotive large 灯, 尾灯, toward 灯, made as mold, sheet/slice, electrical device 材, versus device and other.

        首先 acquisition PC挑选, has transparent transparent, 蓝, 红, 绿, must separation 开;也 has modified, textile parts large separation is modified;如碟 sheet/slice, 灯头都 is film. 清洗各 color PC, and sheet/slice and other process, 也同ABS一样 principle as. rear dry, rear type, extrusion machine production. PC has comparison color, can production 瓷白; transparent still production transparent; its it color can add color agent and material additives. specialized extrusion machine pelletizing, 但PC本身 easy aging therefore can more material, pelletizing 一定慎 heavy, pellet cutting packaging.

         recycled polyvinyl chloride (PVC) (PVC) hard material process process/workflow:

        PVC hard material large separation construction material, 塑钢窗门, electroplating hard sheet/plate 材, factory use plastics 阀门, lower water tube/pipe, decoration material.

        首先挑选工序, color separation 开. this material large upper separation is white, color, black types, need PP, PE mixed 进. to powder machine powder 碎, is belt/tape water powder 碎. 掉污染 belt/tape water 清洗, rear 进行晒 dry, anti 止二次污染. upper and machine 进行配 material, and. if is white material again add color agent, according to need additives and other. specialized PVC extrusion machine 进行刮粒, cooling bag 标号出厂.

         lower is waste plastics recycling process/workflow 图:

        PET bottle to bottle raw materials recycled process

         mixed combined waste plastics process

        典 type waste plastics waste water process （山东 卫 environmental protection ）

         process process/workflow is chemical industry production technology core, 包含 material material balanced, equipment, table/sheet, 阀门, tube/pipe and other 信息, 每一 化 factory has 一份独一无二 process process/workflow 图, can from 一份完整 process process/workflow in can in factory large separation technology 信息. small toward large introduction process process/workflow made methods and key points.

         process process/workflow 图包括 frame 图, PFD, PID this types. generally process/workflow is this 样: process rear, process frame 图;模拟计算 rear, material material balanced, 绘出PFD图, equipment, 阀门, table/sheet, tube/pipe 线 选 type design rear, 绘出PID图.

        1 equipment separation

        1绘图 standards

         process/workflow upper equipment 都标注 equipment and 名称, equipment generally in 两 方. is in upper or lower 方, requirements 排列整齐, can can positive for equipment, in 位号线 lower 方标注 equipment 名称;第二 is in equipment inner or its 近旁, 此处仅注位号, 不注名称. several equipment or machine is 垂直排列时, it 们 位号 and can upper lower 按顺序标注, can water 平标注.

         process equipment 位号 编 method is this 样: process equipment 均应编一 位号, in process/workflow 图, equipment 布置图 and pipeline 布置图 upper 标注位号时, in lower 方画一 strip/profile coarse 实线.

        主项代号 generally use 两位数字组 formed, front 一位数字 table/sheet plant/unit (or workshop)代号. rear 一位数字 table/sheet 示主项代号, in generally engineering design in, use 主项代号即 can. plant/unit or workshop and 主项代号由 design negative in construction start report in to 定; equipment 顺序号 use 两位数字01, 02, …, 10, … table/sheet 示; same equipment used for difference 同一位号 same equipment, use 英文字母A, B, C, ……尾号 table/sheet 示. commonly used equipment classification 代号见 lower table/sheet, generally use equipment 英文名称 首字母 as 代号.

        2 commonly used 图例

        2 tube/pipe and 阀门部 separation

        1绘图 standards

         process pipeline use pipeline combined 号标注, pipeline combined 号由四部 separation formed, pipeline 号(or tube/pipe 段号, mono formed), tube/pipe 径, pipeline and other grade and thermal insulation or 隔声. separation is 三组, use short will and between 隔开, 隔开两组间留适当 空隙, combined generally in pipeline upper 方, 如图 示:

        第一组 has mono 元, separation is material material 代号, 主项编号 and pipeline 顺序号. its in 第1 mono is material material 代号, 由1~3位英文字母 table/sheet 示, various material material 代号见 lower table/sheet, table/sheet in 未规定 material material 代号 由专业 technology 人员按英文字母选取.

        第2 mono is 主项编号, engineering 规定 主项编号填写, using/adopting 两位数字, from 01, 02开始至99 is 止;第3 mono is pipeline 顺序号, same type material material in 同一主项 inner toward rear is 序, 顺序编号. using/adopting 两位数字, from 01, 02开始, 至99 is 止. 第一组 三 mono formed pipeline 号(tube/pipe 段号).

        第二组由第4, 第5两 mono formed, its in 第4 mono is pipeline dimensions, generally 标注公称直径. 以mm is mono 位, 但 注数字, mono 位;第5 mono is pipeline and other grade 由三 部 separation formed.

        第二部 separation is 顺序号, use 阿拉伯数字 table/sheet 示, 由1开始;第三部 separation is pipeline type 别, use large 写英文字母 table/sheet 示, its 含义如 lower: A—铸 iron;B— carbon 钢;C—普通 low alloy 钢;D— alloy 钢;E—不锈钢;F— has color metal;G— non metal;H—衬里 and inner anti 腐.

        第三组由第6 mono formed, is thermal insulation or 隔声代号, table/sheet methods lower table/sheet:

        当 process process/workflow simple, pipeline product types specifications more 时, pipeline combined in 第5, 6两 mono can 省略. 第4 mono dimensions can 直接填写 tube/pipe outer 径×壁 thick, 并标注 engineering pipeline material 代号.

        2 commonly used 图例

        3仪 table/sheet separation

        1绘图 standards

         process process/workflow in 标注出 full and process has testing table/sheet, adjustment control system, analysis 取样点 and 取样阀. its 符号, 代号规定见 lower table/sheet:

        仪 table/sheet control 点 符号图形 generally use fine 实线绘 made, 符号图形, various machine and adjustment 阀 符号 in in can to. table/sheet 图形符号 and 字母代号组 combined 起, can table/sheet industrial table/sheet by amount and function, or table/sheet table/sheet, equipment, parts, tube/pipe 线 名称;字母代号 and 阿拉伯数字编号组 combined 起, formed table/sheet 位号.

        2 commonly used 图例