GB/T 10476-2004 尿素高压冷凝器技术条件

ICS71.120.30

荡黔

中华人民共和国国家标准

GB/T10476-2004

代替GB10476-1989

尿素高压冷凝器技术条件

Specificationsforureahighpressurecondenser

2004-06-09发布2004-12-01实施

中华人民共和国国家质量监督检验检疫总局发布

中国国家标准化管理委员会

GB/T10476-2004

目次

前言·································，···············································，······················，·········……皿

1范围·······························‘···········································，·································……1

2规范性引用文件·，，··········，，·······················，···········，·········，···········..·····.···.·……1

3术语和定义····················································.·...····················..······.·.··.·……2

3.1材料试验报告···········，，······················，，····················.·.·……，二2

3.2合格证，························································，···································。·········……2

3.3焊接工艺规程·········································································2

3.4回火色·········，·········。···，，，·，······，·······“···，，，‘····，，，········，······。·，··，，·····甲，，，，二2

3.5尿素级奥氏体不锈钢································································，········.·..······.·..……2

4要求··········································································································……2

4.1基本要求·············，········。······················································，··········，············，··…2

4.2材料············································································································……2

4.3制造·，·····‘······························································，·······························……6

5检验和试验································，·····································································……9

5.1焊接接头的外观质量检查·····················································.·.·······.··……9

5.2无损检测。···，，，····，，，，·····，，·········，·····，··，，·······，，，，，······，·，，，，·····················……9

5.3铁素体检测··················，·································································.·..······.·..……9

5.4硬度检测·······························，·········，，··········································，，，·········，·…11

5.5尺寸检查····················，，，·········，··········，·······················，，··········，，···········，········……11

5.6表面处理····································································‘····························……，二n

5.7压力试验··········，········，，·········..··。····，，······················……11

5.8空气试验和氨泄漏试验·····，············································，··················..·.。.··.…·…11

6包装、贮存和运输·······················································································……，二12

7出厂文件，，·····，，··········，·····························。···········································.···……，，二12

GB/T10476-2004

前言

本标准与GB10476-1989相比主要进行了下列变动:

—增加了高压管箱主要受压锻件的级别要求及管板超声检侧的特殊要求;

—增加了尿素级不锈钢材料的力学性能及晶间腐蚀倾向试验的取样数量要求;

—修改了尿素级不锈钢材料复验时，其晶间腐蚀倾向试验的取样数量;

—增加了尿素级不锈钢材料的标记要求;

—修改了空气试验要求。

本标准自实施之日起，代替GB10476-1989尿《素高压冷凝器技术条件》。

本标准由中国石油和化学工业协会提出。

本标准由化学工业机械设备标准化技术委员会归口。

本标准起草单位:大连冰山集团金州重型机器有限公司。

本标准主要起草人:王金环、于辉。

参加本标准编制的人员有:刘静、王永斌、于义枫。

本标准所代替标准的历次版本发布情况为:GB10476-1989,

GB/T10476-2004

尿素高压冷凝器技术条件

范围

本标准规定了尿素装置中尿素高压冷凝器的材料、制造、检验及验收等要求。

本标准适用于壳程设计压力不大于1.26MPa,管程设计压力不大于16.2MPa、设计温度不高于

200℃的超低碳尿素级奥氏体不锈钢(以下简称尿素级不锈钢)衬里结构的尿素高压冷凝器(以下简称冷

凝器)。

2规范性引用文件

下列文件中的条款通过本标准的引用而成为本标准的条款。凡是注日期的引用文件，其随后所有

的修改单(不包括勘误的内容)或修订版均不适用于本标准，然而，鼓励根据本标准达成协议的各方研究

是否可使用这些文件的最新版本。凡是不注日期的引用文件，其最新版本适用于本标准。

GB150钢制压力容器

GB151管壳式换热器

GB/T1220不锈钢棒

GB/T4237不锈钢热轧钢板

GB6654压力容器用钢板

GB/T8923涂装前钢材表面锈蚀等级和除锈等级

GB/T14976流体输送用不锈钢无缝钢管

HG/T2806奥氏体不锈钢压力容器制造管理细则

HG/T3172尿素高压设备制造检验方法尿素级超低碳铬镍钥奥氏体不锈钢晶间腐蚀倾向试

验的试样制取

HG/T3173尿素高压设备制造检验方法尿素级超低碳铬镍铝奥氏体不锈钢晶间腐蚀倾向

试验

HG/T3174尿素高压设备制造检验方法尿素级超低碳铬镍钥奥氏体不锈钢的选择性腐蚀检

查和金相检查

HG/T3175尿素高压设备制造检验方法不锈钢带极自动堆焊层的超声检测

HG/T3176尿素高压设备制造检验方法尿素高压设备氨渗漏试验方法

HG/T3178尿素高压设备耐腐蚀不锈钢管子管板的焊接工艺评定和焊工技能评定

HG/T3179尿素高压设备堆焊工艺评定和焊工技能评定

HG/T318。尿素高压设备衬里板及内件的焊接工艺评定和焊工技能评定

JB4708钢制压力容器焊接工艺评定

JB/T4711压力容器涂敷与运输包装

JB4726压力容器用碳素钢和低合金钢锻件

JB473。压力容器无损检测

JB4744钢制压力容器产品焊接试板的力学性能试验

YB/T5148金属平均晶粒度测定法

《压力容器安全技术监察规程》

GB/T10476-2004

《锅炉压力容器压力管道焊工考试与管理规则》

3术语和定义

下列术语和定义适用于本标准。

3.1

材料试验报告materialtestreport

材“料试验报告”是指原材料制造厂、钢厂或铸锻厂的试验报告。此报告应阐明材料是符合哪一种

标准、材料的炉号、批号或熔炼号、热处理号(如果有的话)、化学成分和/或耐腐蚀性能数据、力学性能及

无损检测的结果。

3.2

合格证certificate

“合格证”是指钢厂、铸锻厂、材料制造厂或设备制造厂签发的一种书面文件(或由卖方同意的这项

工作或数据记录)，用于说明其化学成分和力学性能以及热处理符合特定的标准，如符合GB150,

GB6654、本技术条件或有关工程标准的要求。

3.3

焊接工艺规程weldingspecifications

“焊接工艺规程”是指设备制造厂根据焊接工艺评定报告(PQR)和焊接工艺指导书(WPS)编制的

直接为焊工阅读使用的焊接工艺卡(WPC)，内容包括焊接参数、焊接材料规格、焊接顺序、焊后热处理

(PWHT)、无损检测(NDE)等要求。

3.4

回火色temperedcolour

“回火色”是指奥氏体不锈钢加热到6000C^650℃左右的颜色，一般呈暗金黄色或暗灰色，可能造

成晶间腐蚀。打磨时局部过热会出现这种颜色。

3.5

尿素级奥氏体不锈钢areagradeausteniticstainlesssteel

本标准所提到的尿“素级奥氏体不锈钢”是指超低碳铬镍钥奥氏体不锈钢的化学成分和金相组织除

符合相关标准要求外，还应符合下列条件:

a)铁素体形成元素(Cr,Mo,Si)和奥氏体形成元素(Ni,C,N,Mn)的配比应使不锈钢固溶处理后

形成全奥氏体组织;

b)对OOCrl7Ni14Mo2(尿素级)奥氏体不锈钢，要求Cr>17%,Ni>13%,

Mo>2.2%,N簇0.22%;

c)铁素体含量不超过。.6%;

d)应按HG/T3172,HG/T3173,HG/T3174标准进行取样和试验，其结果应符合本标准的

规定。

4要求

4.1基本要求

尿素高压冷凝器的设计、制造、检验及验收除应符合本标准规定外，还应符合GB150,GB151及图

样的要求。

4.2材料

受压元件材料和与腐蚀介质接触的材料(均包括焊接材料)应符合有关的标准及图样规定，且应有

钢厂出具的试验报告和合格证。

4.2.1低合金钢

GB/T10476-2004

4.2.1.1用于制造封头的钢板应是细晶粒钢，晶粒度按YB/T5148检测不低于6级;钢板还应按

JB473。逐张进行超声检测,II级合格，且应保证设计温度下的屈服强度。

4.2.1.2用于制造管板、管箱筒体、人孔凸缘、人孔盖及人孔法兰的锻件，应符合JB4726W级要求，且

应保证设计温度下的屈服强度，屈强比不得大于。.8。对于管板的超声检测还应符合下述要求:

a)锻件粗加工后，管板任一端面。^150mm深度范围内为重要区。该区域的检测起始灵敏度为

$3当量直径，缺陷等级要求如下:单个缺陷，m级;底波降底量，m级;密集区缺陷，工级。

b)非重要区域的检测起始灵敏度为$4当量直径，缺陷等级要求如下:单个缺陷，皿级;底波降底

量，,III级;密集区缺陷,II级。且每个区域面积不应超过30cm'，各区域的间距不小于120mm,

4.2.1.3所有低合金钢焊接接头，常温下抗拉强度不得大于720MPa，材料焊接以后任何部位的硬度

不得大于HB280.

4.2.2尿素级不锈钢

4.2.2.1设备中与腐蚀介质接触的衬里、密封环、管子、接管(包括螺纹接头)、内件等零部件应根据设

计要求分别选用OOCr17Ni14Mo2(尿素级)或0OCr25Ni22Mo2尿素级不锈钢材料。

4.2.2.2尿素级不锈