This thesis mainly studies the feasibility of applying cryogenic treatment technology to purging harmful gases which are mainly composed of carbon dioxide.The paper puts forward three technical projects,analyzes the system composition,the operation principle and head capability,balances the merits a

The properties of various kinds of cryogenic thermal insulating materials are described and analyzed.It is proposed to develop an ideal new cryogenic thermal insulating material with low thermal conductivity,high anti compressive strength,good damping capacity and hygroscopicity polyvinyl foamed pla

<正> 本船为远洋专业金枪鱼钓作业的钢质双甲板(局部不连续),单机,单桨,单舵(襟翼舵),球鼻艏,设计水线以上首柱前倾,巡洋舰艉,艉机型,由低速柴油机驱动的远洋超低温渔船。 本船主要作业海域为太平洋、印度洋、大西洋等大洋性渔场。

This paper introduces a new design idea of cryogenic self tightening sealing structure including structural design, mechanical calculation and simulation test.

The microstuctures of high carbon steel after quench and cryogenic treatment Were studies by means of diffractometer and TEM The result show that the improvement of hardness after cryogenic treatment mainly comes from the dispersedly preipitation of ultrafine carbide the diameter of these carbid is

通过对压装薄壁件时采取敲击工艺和深冷工艺两种方法的比较 ,得出采用深冷工艺不仅可以杜绝零件跟转现象 ,而且能取消铰薄壁零件内孔工序 ,从而达到降本增效 ,保证产品质量的目的

This paper introduces the expansion refrigeration process of tail gas in the ethylene plant of Maoming Ethylene Project,and analyzes the effect of different expansion refrigeration modes on cryogenic separation.Expansion refrigeration through a tail gas expander can reduce energy consumption and inc

In order to verify the realization possibility of the combined propulsion known as KLIN cycle,which consist of a thermally integrated deep cooled turbojet and liquid rocket engine,a primary performance assess was performed From the assessed results and the references, it can be concluded that the KL

The PR state equation and modified mixed rules were used for the simulated calculation of cryogenic purifier distillation by Broyden method. The distributing data of terperature,pressure,vapor rate,liquid rate and compositions along whole distillation were ob- tained,and the computation results were

The mixed rules of PR equation of state are modified in the article,and used for the simulated calculation of cryogenic purifier rectification by Tridiagonal Matrix-Broyden method.The distributing data of terperature,pressure,vapor rate,liquid rate and compositions along whole distillation are obtai

Storage of liquid ammonia in cryogenic,flat bottomed tanks at atmospheric pressure presently is a preferred method for large scale ammonia plants and port storage facilities,and is also considered to be safest method.This paper discusses the process flow,operating maintenance of such ammonia storage

<正> 近接国家科技信息所《1999年度中国科技期刊引证报告》,相告《深冷技术》1999年度"影响因子为0.241,在机械仪表学科内排名第12位,在1372种期刊中排名第404位"。而1998年度《深冷技术》的引证报告是:"影响因子为0.111,在全国1286种科技期刊中排名

简略介绍现代深冷空气分离技术的特点、动向、市场及发展前景。

We made a research on the evaluation method of the types of the slow\|acting erodent used on the deeply\|cooling equipment, put forward the synthetic mechanism, method and the choice of type BDH-Ⅰ slow\|acting erodent, and the place of putting the slow\|acting erodent and the device design, formed a

The effect of cryogenic treatment on the TEM microstructure of SAE4820 carburized steel was studied by means of Transmission Electron Microscope(TEM).The residual compressive stress and retained austenite were analyzed quantitatively by XRay Diffraction.The results showed that the retained austenite

To improve the service life of cone bits, 20Ni3Mo steel is used instead of 20Ni4Mo steel, and 930±10℃×6h carburization and hardening technology is adopted and then cryogenic treatment in liquid nitrogen is executed. Wear test and TEM observation of the microstructure show that, after cryogenic treat

为了研究用于回收氢气的深冷分离设备的热力设计计算方法， 必须解决低温、高压条件下　　含氢气体的汽液平衡计算问题。本文使用修正的ＰＲ方程计算了含氢低温、高压气体混合物的汽　　液平衡， 计算结果与实验数据的比较表明修正的ＰＲ方程可以用于换热器的设计计算中。