急求一篇关于合成氨的英文翻译，字数在1000单词左右？ 低温变换炉（r1502）催化剂装填方案 catalyst loading procedure for lt reactor (r1502) 1. 编制依据 preparing basis 1.1 催化剂厂商提供的使用说明书 catalyst vendor’s operation instructions 1.2 操作手册 operation manual 1.3 低温变换炉（r1502）设备图纸 equipment drawings of lt reactor (r1502) 1.4 工艺流程图 p&id 2. 装填目的 loading purpose 使催化剂均匀分布，避免出现架桥现象，保证工艺气分布均匀，防止在生产过程中co穿透。 well distribute the catalyst without bridging. therefore, ensure that regular flow of process gas to avoid co penetrating through. 3. 主要技术指标 specification 序号 no. 型号 type 装填量 volume (m3) 装填高度 height (mm) 堆密度 bulk density (kg/lt) 1 氧化铝球（φ13） alumina balls (φ13) 1.6 100 2 b206 24 4550 xxx 3 氧化铝球（φ13） alumina balls (φ13) 0.53 300 4 氧化铝球（φ38） alumina balls (φ38) 3.6 - 催化剂装填示意图及装填记录表见附图及附表。 see the attached sketch and record sheet for catalyst loading. 4. 装填催化剂所需工器具 tools / equipment list 序号 no. 工 器 具 tools/equipment 数量 qty. 规 格 specification 备 注 remark 1 叉车 fork lift 2 3 tons capacity 2 吊车 crane 1 40 tons capacity 3 筛网 screen 1 2 m×1 m (1 mm opening) 4 帆布溜管 canvas hose 1 φ250×5,000 加料用，缝纫双线 double sewed for catalyst flowing 5 磅秤 scale 1 1000 kg capacity 6 过筛平台 screening platform 1 higher than the screen 7 装料漏斗 hopper 2 1.5 m3 capacity see dwg.4946-00-e-fdc-203 8 安全灯 safety lamp 5 12 v, with 200 m wire 塔内照明用 for inner vessel 9 手电筒 torch 2 5-knob 10 水平仪 level meter 1 11 水平尺 level bar 1 12 木耙 wooden ‘t’ rake 4 h×thk.×w: 10×45×250 handhold: 450~1450 13 对讲机 radio 6 14 绳梯 rope ladder 1 20 m×0.5 m 15 安全带 life belt 2 16 安全绳 life rope 2 20 m 17 工具包 tool bag 2 canvas 18 剪刀 scissors 2 19 起子 opener 4 开桶用 for drum opening 20 钢丝钳 pliers 4 开桶用 for drum opening 21 木踏板 wooden foot board 8 600×300×20 with rounding angles 22 圆头铁锹 round spade 4 23 卷尺 measuring tape 2 15 m 24 桶 drum 1 15l 5. 装填人员 manpower list 序号 no. 人 员 manpower 数量 qty. 备 注 remark 1 安全监护员 safety keeper 1 2 起重司机 crane driver 1 3 叉车司机 fork lift driver 2 4 起重工 lifting worker 2 5 装卸工 loading worker 20 6. 装填前准备工作 preparation work 6.1 所有相关人员必须进行安全培训。 all men working for the catalyst loading shall be given safety training. 6.2 进罐前必须进行气体分析，容器内氧含量≥19%为合格。 entering the reactor is only possible after checking the oxygen content and be sure that it is above the minimum threshold limit (19%). 6.3 对各种设备提前进行调试。 test of all the tools and equipment, prior to loading, is needed. 6.4 r1502设备、管道安装完毕，试压合格。 erection works and hydraulic test of r1502 and relevant pipes have been done properly. 6.5 按设备图检查炉内、炉外符合设计要求。 the inspection has to be carried out to check if inner and outer of the reactor meet the requirement of design drawings. 6.6 炉内的内件及热电偶安装正确，机械清扫合格。 internals and thermocouple installation and mechanical cleaning of the reactor has been done properly. 6.7 上、下游工艺管线吹扫结束。 purging work of upstream and downstream pipes has been done. 6.8 炉内装填线已按要求明显标出。 lines have been marked obviously to meet the requirement of loading. 7. 装填步骤 loading procedure 7.1 确认送至现场的催化剂、瓷球及丝网的型号、规格、质量、数量无误。开箱确认现场的催化剂是否符合要求。筛检出不合格产品，测定催化剂堆密度，并保存少量催化剂样品（至少1公斤）。 open catalyst drums to loading site to ensure that correct catalyst, ceramic ball, and protection screen, including type, weight and quantity, is to be handled. test bulk density of qualified catalyst after screening, of which more than 1 kg is to be kept for a sample. 7.2 确认底部卸料孔挡板已装上，法兰已复位。卸料孔内装满瓷球。 ensure that the catalyst unloading nozzle, full of ceramic balls, has been blanketed with baffle and blind flange. 7.3 先将φ38瓷球装入底部封头并耙平，再装φ13瓷球并耙平。 first load and level φ38 ceramic balls on bottom head, and then φ13 ceramic balls over them. 7.4 将催化剂倒入吊斗，吊斗装满后，将倒入吊斗的催化剂重量按桶数计量并做好记录，然后用吊车将吊斗吊至炉顶，通过帆布袋装入炉内。 fill the hopper with screened catalyst, and record weight of the catalyst it holds counting by drum. lift it to the top of reactor, load catalyst by flowing through canvas hose. 7.5 炉内人员应抓住帆布袋下口将催化剂均布于炉内，避免催化剂自由下落，也不允许将催化剂堆在同一位置，以免造成阻力不均。 keep moving the end of canvas hose by workers in the reactor to well distribute the catalyst. freefall should be avoided as well as piling on one point, which will cause regular pressure drop. 7.6 将表面耙平，然后继续装填，达到要求高度后将床层表面耙平。 when the catalyst bed reaches the height required, level it by raking. leveling is also to be needed during loading. 7.7 在装填催化剂时必须小心地确保热电偶套管固定良好。 thermowell shall be kept fixed securely during loading. 7.8 催化剂装填完后，在催化剂框顶部装上篦子板。 install protection screen after catalyst loading. 7.9 装填φ13的瓷球至要求高度，并将表面耙平。 fill φ13 ceramic balls to the height required and level it. 7.10 将炉内工具、木板等物吊出，检查确认炉内无异物时炉内人员撤出。 lift out all tools and foot boards. workers inside leave the reactor, ensuring that no foreign material is left inside. 7.11 经工艺人员检查确认后，通知安装单位封闭人孔。 after checking by process engineer, blind the manhole by construction contractor. 7.12 r1502通n2保护。 fill nitrogen into r1502 for protection. 7.13 注意热电偶套管按容器的对角线方向安装，装填催化剂时不能损坏。 damage of thermowell, installed along the diagonal of reactor, should be avoided during catalyst loading. 8. 注意事项 notice 8.1 装填场地做好清洁，外放催化剂必须做好防雨、防潮、防风、防尘，装填过程认真记录。 loading field shall be kept clean. exposed catalyst must be protected from rain, moisture, wind and dust. the work performed should be recorded. 8.2 在整个过程中，催化剂桶应轻拿轻放，严禁滚动摔打，在运转、装填时必须小心缓慢，以防止催化剂破碎及因过度磨损而形成粉末。 the catalyst shall be gently handled. knocking and rolling the catalyst drum, which will cause broken and powder catalyst. 8.3 装料时布袋口要系牢，免使物料漏出，由高处落下伤人。 the end of canvas hose shall be fastened during loading in order to avoid dangerous falling of leaked pieces. 8.4 布料时，注意不得损坏反应器内件，内件周围要装实，同时布料人员严禁直接踩踏催化剂，以免踩碎催化剂造成阻力分布不均，需在催化剂上行走时应在所垫上木板上进行。 during distributing, damage of internals should be avoided; solid loading should be performed around the internals; standing on catalyst without foot board, which will cause broken and irregular pressure drop, is prohibited. 8.5 物料要均匀分布，以免粉尘堆积，阻力不均，并且任何时候物料下落高度禁止大于0.5 m。 loading materials should be well distributed to avoid irregular pressure drop. maximum free fall of loading materials should be less than 0.5 m. 8.6 平台上人员要系好安全带、注意安全。 workers on the platform should wear safety belts and pay attention to safety. 8.7 如遇天气恶劣及其它异常情况时，须及时封闭反应器及已开的催化剂桶。 in case of rain or an emergency stop, the reactor and catalyst drums opened shall be covered timely. 8.8 进塔人员所带物品必须由记录人员做好记录。装填完毕后须一一核对，以免遗忘在塔内。 all tools carried in the reactor should be recorded and compared to those taken out after loading.查看更多
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