摘要为防止超细RDX干燥后结块，并确保干燥过程安全，本文采用真空冷冻干燥方法对超细RDX浆料进行干燥处理。文章介绍了真空冷冻干燥设备的工作原理。通过实验，研究了影响RDX真空冷冻干燥过程效率的主要因素，获得了RDX冷冻干燥工艺曲线。RDX真空冷冻干燥过程合适的工艺条件：RDX制品厚度≤3mm，预冻温度-40℃左右，预冻时间2h，冷凝器温度-60℃左右，干燥箱内的压力（真空度）10Pa左右，升华干燥温度-10℃，解析干燥温度40℃，干燥过程总时间19h。实验结果表明：在合适的工艺条件下，RDX的真空冷冻干燥过程安全、稳定可控；其冻干制品，含水率≤0.51%，疏松多孔，无结块，分散性好。63837

毕业论文关键词：超细RDX，真空冷冻干燥，升华，分散性，安全

毕业设计说明书（论文）外文摘要

Title  Study on Vacuum Freeze-Drying Technology of the RDX Superfine Powder                    

Abstract In order to prevent the agglomeration of the RDX superfine powder after drying，to ensure the safety of the drying process，this paper adopts the vacuum freeze drying method for the drying of the superfine RDX slurry. The operation principle of vacuum freeze-drying machine was expounded in detail. It was researched that the influence factors of the RDX drying efficiency through the vacuum freeze drying experiment of the superfine RDX. The RDX vacuum freeze-drying process curve was obtained. The suitable process conditions of RDX vacuum freeze-drying: RDX product thickness≤3mm, the temperature -40℃ and the time 2h during Freezing, the condenser temperature -60℃,the pressure(vacuum) of dryer 10Pa, the temperature of Sublimation process -10℃, the temperature of the parsing process 40℃, total drying time 19h. The experiment result showed that under suitable process conditions, the RDX vacuum freeze-drying process was safe and stable control. The RDX superfine powder after vacuum freeze-drying，moisture content ≤0.51%，porous，no agglomeration，good dispersion.

Keyword: the RDX Superfine powder，Vacuum freeze-drying, sublimation， dispersion, safety

目录

1  引言 1

1.1 研究背景及意义 1

1.2  国内外研究状况 2

1.3  本论文主要研究内容 3

2  RDX真空冷冻干燥试验方法 4

2.1 真空冷冻干燥原理 4

2.1.1 预冻阶段 5

2.1.2 升华干燥阶段 6

2.1.3 解析干燥阶段 8

2.2  RDX真空冷冻干燥试验方法 9

2.2.1 主要原料及干燥设备 9

2.2.2 RDX冷冻干燥试验方法 11

2.2.3 RDX冷冻干燥工艺流程 11

2.3  RDX干燥产品含水量检测方法 12

2.3.1  分仪的工作原理 12

3  RDX冷冻干燥试验结果及讨论 12

3.1  RDX冷冻干燥工艺条件确定 12

3.1.1  RDX制品的预冻 12

3.1.2冷凝器(捕水器)的预冷 13

3.1.3 RDX制品的升华干燥 13

3.2 冷冻干燥与普通水浴干燥对RDX干燥效果对比