HG2952-2003尿素二氧化碳汽提塔技术条件化工标准.pdf

ICS71.120.10;75.180.20;23.020.30 G =I3 备案号 :13188-2004 HG 中华 人 民共 和 国化 工 行 业 标 准 HG 2952-2003 代替HG2952-1989 尿素二氧化碳汽提塔技术条件 Specificationsforureacarbon dioxidestripper 2004-01-09发布 2004-05-01实施 中华人民共和 国国家发展和改革委 员会 发布 HG 2952- 2003 目 次 前言 m 范 围 2 规范性引用文件 3 术语和定义 4 要求 基本要求 4.2 材料 一 4.2 低合金钢 ·… 一 4.2.2 尿素级不锈钢 4.2.3 材料复验 ···················································································.·············…… 5 4.2.4 标记移植 ···，·············‘·······，····················，··，·····4··················……，，.····……，.·…… 6 4.3 制造 ···············································，·····················，·····································…… 6 4.3.1 一般规定 ········································································，··········。············…‘… 6 4.3.2 封头 ····················，甲。········，······················，，···················，价 ·········，，············…… 6 4.3.3 管板 ·····································································································，·…… 6 4.3.4 筒体、衬里·····························‘········，·····················，·，··················，········……，，… … 6 4.3.5 组装 ···················，························································，，，·····················，，·…… 7 4.3.6 焊接 ·········································································································…… 7 4.3.7 热处理 ······，··1········ ····，，· ·，· ···