减压装置

The fault tree of atmospheric-vacuum distillation unit is established with deductive method on the theory of fault tree analysis.

根据故障树分析理论，用演绎法建立了常减压装置的失效故障树，通过定性分析找到影响稠油加工常减压装置安全性的主要因素，通过定量分析计算出引起失效的各事件的概率和重要度。

This paper in view of present crude oil units running situation and the existence prominent question, in cooer with progress of production has carried out the corrosion mechanism research, the anticorrosion measure and the corrosion actually tests and analysis, the security and reliability analysis and the life forecast research, with the research of out and inner our country and the production actuality ,which provides a practical and feasible base for guaranteeing the equipment in the long-term and steady safe operation.

本文针对目前国内稠油加工常减压装置的生产运行现状和存在的突出问题，结合国内外研究工作和生产实际开展了稠油加工装置故障树分析、腐蚀机理、防腐措施、腐蚀实验、安全可靠性分析和寿命预测等方面的研究工作，为提高我国石油炼化装置的安全可靠性提供了理论基础和新的方法。

In this paper,the venturi spray attemperator and the depressurizer with minute orifices are designed and applied novelly to discharge the high-temperature and high-pressure gas with particle reliably.

文章对旁路烟道的减温减压装置进行了专门设计，采用新颖的高速文丘里雾化冷却器和小孔节流降压消音器相结合的方法，实现了不同工况下高温高压含尘烟气的减温减压排放。

It can make large numbers of gas attempered to temperature required rapidly and ensure the cooling water to vapor and overheat completely avoiding the depressurizer of minute orifices' blocking. The attemperator combined with the depressurizer also can meet operation requirement under variant loads.

提出的高速文丘里雾化冷却器与小孔型节流降压消音器相结合的减温减压装置在中试电站的成功运行表明，采用高速文丘里雾化冷却方式能够充分利用高温高压烟气的能量雾化冷却水，既能使大气量的烟气快速降温，又能确保烟气的干度，安全地实现不同工况下含尘烟气的减温减压排放。

These devices take the form of frangible disks or pressure relief valves.

减压装置以易碎盘或减压阀的形式出现。

Transfer lines for liquid helium should be well insulated and vacuum jacketed.

如果压力源的压力很高，有必要使用减压阀和减压装置。

Types of pressure-relief device designs include fusible plugs, rupture disks, rupture disks with fusible metal backing, and spring-loaded relief valves.-?

减压装置的设计类型包括易熔塞、破裂盘、带易熔金属衬里的破碎盘和弹簧减压阀。

As 8 million tons / year the building of constant decompression device put into production, 3.3 million tons / year plant of an a batch of derv hydrogenation device construction that build a project, ethylene transforms survey of spot of project project make one's bow easily to evaluate, company and refine changed a ministry to welcome a rare development opportunity again.

梗概： 2005年，随着800万吨/年常减压装置的建成投产、330万吨/年柴油加氢装置等一批新建项目的建设、1号乙烯装置易地改造工程项目正式进入现场调研评估，公司和炼化部又迎来了一个难得的发展机遇。

The thesis introduces development of control system of distillation and vacuum unit of TPCC Refinery.

本文介绍了天津石化炼油厂常减压装置的控制系统的发展过程，研究了串级控制在二套常减压装置减压塔上的应用。

This can lead to users applying excessive heat to the valve, possibly creating leakage at the outlet connection, the valve packing , and especially from a fusible metal relief device if the valve is so equipped.

这会导致用户过度加热阀门，可能造成排气口接头和阀门衬垫处泄露，特别是从易熔金属减压装置处泄露，如果阀门装有易熔金属减压装置的话。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。