First of all failure analysis which includes failure mode and reason is carried on the compressors and pumps in the urea unit .

首先对 尿素 装置机泵设备进行失效分析，深入分析了CO2压缩机和泵的失效形式及失效原因。

Introduce the development of special chemical cleaning agent LS-851 of the stripper of urea unit observe influences of temperature cleaning concentration pH value adding amount of additives and reaction time of dynamic experiment unit etc.

介绍了 尿素汽提塔专用化学清洗剂 LS-851的制备。在动态实验装置上考察了温度、清洗剂浓度、酸度、添加剂加入量、反应时间等因素对清洗效果的影响。

Presents feasible controlling measures for decreasing urea unit consumption of gas quenching process for cyanamide production in order to decrease production cost perfect process design optimize process operation and stabilize production .

对气相淬冷法三聚氰胺工艺降低 尿素 单耗提出可行性的调控对策，以期降低生产成本，完善工艺设计，优化工艺操作，稳定装置生产。

Recovering carbon dioxide from methanol plant and using it as feedstock of urea unit

甲醇 装置二氧化碳回收做 尿素原料

Application of U 3 steel in urea unit

U3钢在 尿素 生产中的应用

Presents the multi stage medium speed centrifugal HP ammonia pumps in the Snam urea unit of Inner Mongolia Chemical Fertilizer Plant .

介绍内蒙古化肥厂Snam 尿素 装置采用的多级中速离心式高压氨泵。

Influence of external water admission on urea unit

外来加水对 尿素 系统的影响

Dynamic analysis and optimizing operation of urea unit under circulating evaporation Evaluation of the microcirculation and its clinical applications in diabetes mellitus

尿素 装置蒸发打循环的动态分析及操作优化微循环功能的检测方法及其在糖尿病中的应用

Development of Special Chemical Cleaning Agent for Stripper of Urea Unit

尿素 汽提塔专用化学清洗剂的研制

The existing problems and treating measures in the desorption system for NH 3 air-lift urea unit and low pressure system are discussed .

介绍赤天化NH3汽提 尿素 装置解吸系统与低压系统存在的问题及处理措施。

A presentation is given on the use for the first time of the horizontal multi-stage high-pressure centrifugal ammonia pump and dry-gas seals for pumps in the large urea unit based on the ammonia stripping process .

介绍卧式多级离心式高压氨泵及泵用干气密封首次应用于大化肥氨气提法 尿素 装置的情况。

Analysis of Typical Troubles of Intelligent Valve Locator in Urea Unit

尿素 装置智能阀门定位器典型故障分析

Analysis of Causes for Rupture of Explosion Proof Plate in High-Pressure Scrubber of Urea Unit and Measures for its Solution

尿素 装置高压洗涤器防爆板爆破原因分析及解决措施

General appraisal is also made for the instrument system of the urea unit .

对 尿素 装置仪表系统作了总体评价。

Use of CENTUM XL DCS in a Large Ammonia Plant for Synthesis and its Urea Unit

CENTUM-XL集散控制系统在大型氨厂合成、 尿素 装置中的应用

Analysis and calibration of complex control system in urea unit

尿素 装置复杂控制系统简析与仪表调试

Design and synthesis of chiral diphenic acid-based molecular tweezers containing unsymmetrically disubstituted urea unit

手性不对称 脲 联苯二甲酸分子钳的设计合成一系列二茂铁二取代物的合成和表征

The reformation scheme of big granule urea unit is briefly introduced and summarization is made for executing effect of the technical reformation .

介绍了大颗粒 尿素 装置改造方案，对技术改造的实施效果进行了总结。

After an examination of the technical renovation it is found that the capacity of the urea unit increases by a big margin with the highest daily output at 552.4 t essentially reaching the design capacity and the plant extricates itself from the passive situation .

经过技术改造考核， 尿素 装置的生产能力大幅提高，最高日产量达到了552.4t，基本上达到了设计能力，使企业摆脱了被动局面。

The system is used in the ammonia synthesis section and the urea unit at Guizhou Chishui Natural Gas Chemical Group Co. Ltd with good results .

该系统在贵州赤天化集团有限责任公司合成、 尿素 装置中应用，效果良好。

Outlines the automatic instrument of urea unit and its test run and summarizes the technical revamping during the test run . Years of production practice proves that the revamping is effective and provide the conditions for smooth commissioning and stable operation of the unit .

介绍 尿素 装置自动化仪表的概况及试运行情况，总结了试运行过程中进行的技术改造，经过几年的生产实践，证明这些改造是富有成效的，为装置顺利开车及稳定运行创造了条件。

Summary of Experience of Urea Unit Test Run for Baoji Nitrogen Fertilizer Plant

宝鸡氮肥厂 尿素 装置试车经验总结

Feasibility Study of Real-Time Measuring Technology for Liquid Phase Concentration in Urea Unit

尿素 装置液相浓度实时测量技术的可行性研究

A Study on Cleaner Production / Process Optimization & Control for De-Adsorption Column at Urea Unit

尿素解吸塔清洁生产/工艺优化及控制研究

Use of Low-Pressure Start-Up in Urea Unit by CO_2-Stripping Process

低压开车法在CO2气提法 尿素 装置的应用

Control measures for decreasing urea unit consumption of cyanamide process

三聚氰胺工艺降低 尿素 单耗的调控对策

The Application of Poisonous Medium Leakage and Diffusion Model on Safety Evaluation of Urea Unit

有毒介质泄漏扩散模型在 尿素 装置安全评价中的应用

The retrofit is given of the prilling basket second stage evaporation separator and control valve for pressure in the hydrolysis system in a urea unit based on the ammonia stripping process .

介绍氨气提法 尿素 装置的造粒喷头、二段蒸发水离器及分解系统压力控制阀的改造情况。

Corrosion and protection of high pressure equipment in strip urea unit

汽 提法 尿素 装置高压设备的腐蚀与防护

The visual risk analysis software is designed which is a constituent part of the risk analysis system of urea unit .

编制了可视化的风险分析软件，该软件是 尿素 装置风险分析系统的重要组成部分。