降低天然气压缩机组单位能耗的研究

文章以探索提某站4台伴生气天然气压缩机组运行时效作为研究目的,针对压缩机组运行过程中出现的机组排量低、运行参数偏离设计值等问题开展研究,采取调整余隙和增大动力缸上止点时燃烧室容积等措施,实现机组提高处理量、降低单位能耗的目的,在为企业节省生产运行成本的同时,实现节能减排。     

气浮+磷酸铵镁化学沉淀法处理铝材行业氟化氢铵表面处理废水

针对铝材企业NH4HF2表面处理废水含有高浓度的NHs-N和F-等特点,采用气浮+磷酸铵镁(MAP)化学沉淀法对NH4HF2废水进行预处理,可达到目标处理效果,再引入氧化废水池进一步处理,继而达标排放.经验证,该方法是一种技术可行、经济合理的NH4 HF2废水处理方法.     

Effects of Ergorest® Arm Supports on Muscle Strain and Wrist Positions During the Use of the Mouse and Keyboard in Work With Visual Display Units: A Work Site Intervention

The effects of Ergorest^® arm supports on wrist angles and musculoskeletal strain in the neck-shoulder-arm region and electrical activity in the shoulder and arm muscles were studied during typing or the use of the mouse in work with a visual display unit (VDU). Twenty-one women were randomized into 3 groups (1 arm support, 2 arm supports, and control). Measurements were carried out before and after the 6-week intervention. The wrist extension of the mouse hand, the muscle activity of the trapezius muscle, and the subjective discomfort ratings indicated that 2 arm supports were better than 1 in work with a mouse. The Ergorest^® arm support alleviates muscle and joint strain in VDU work when used for both arms.     

含硫污水汽提装置的技术改造

洛阳石化总厂五联合装置对含硫污水汽提装置的技术改造，不改变塔体，仅采用新型梯型立体喷射塔盘就能使其处理能力扩大70％－100％，运行效果较好，对国内炼厂同类环保装置的扩改及推行清洁生产有借鉴之处。     

USE OF TOPOLOGICAL INFORMATION IN HYDROGRAPH ESTIMATION1

ABSTRACT: Discharge hydrographs computed from the theory of linear flow through topologically random channel networks are compared to actual discharge hydrographs for basins in semiarid regions of central Wyoming. The basins drained by the channel networks range in size from 0.69 to 10.8 square miles. Topological information consisting of stream-network magnitude and link -length distribution parameters are used in calibrating celerity values that ensure that the peak discharge and excess rainfall volume of the resulting computed hydrographs match the peak discharge and excess-rainfall volume of the actual hydrographs. Results indicate that, for a given peak discharge and excess-rainfall volume in a basin, the sensitivity of the calibrated celerity values to excess-rainfall duration is small if the ratio of excess-rainfall volume to peak discharge is at least 1.75 times the excess-rainfall duration.     

某催化裂化装置生产过程中职业病危害因素调查

通过对催化裂化装置生产过程中职业病危害因素调查,找出职业病危害的关键控制点,并提出防护要求。     

巴陵石化尿素水解装置的环保改造

分析了尿素水解装置存在的问题及采取的改进措施,提高了水解装置处理能力与处理效果,实现了清洁生产、节能降耗、保护环境的目的。     

DMF抽提装置火灾爆炸危险性分析

运用美国道化学公司（DOW）火灾爆炸危险指数法（七版）,对中国石化北京燕山分公司合成橡胶厂DMF抽提装置的火灾爆炸危险性进行了分析评价,结合评价结果给出采取的对策和措施,以降低生产装置的危险陛。     

空分装置爆炸危险与防控分析

分析了空分装置可能发生设备爆炸的部位及形成爆炸的原因,指出碳氢化合物（尤其是乙炔）的积聚是导致空分装置爆炸的主要因素,提出了防止空分装置爆炸的安全防控措施。     

腈纶装置烘燥机自燃的原因及预防措施

分析了上海石化腈纶事业部金阳装置二步法纺丝后处理使用的第二烘燥机在高温高热状态下运行,设备内部经常发生自燃现象的原因和预防措施。