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GB/T 9842-2018: Specification for urea reactor
Status: Valid GB/T 9842: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 9842-2018 | English | 279 |
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3 days [Need to translate]
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Specification for urea reactor
| Valid |
GB/T 9842-2018
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| GB/T 9842-2004 | English | 599 |
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4 days [Need to translate]
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Specification for urea reactor
| Obsolete |
GB/T 9842-2004
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| GB 9842-1988 | English | 519 |
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Specifications for urea reactor
| Obsolete |
GB 9842-1988
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PDF similar to GB/T 9842-2018
Basic data | Standard ID | GB/T 9842-2018 (GB/T9842-2018) | | Description (Translated English) | Specification for urea reactor | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G93 | | Classification of International Standard | 71.120.10 | | Word Count Estimation | 14,161 | | Date of Issue | 2018-12-28 | | Date of Implementation | 2019-11-01 | | Older Standard (superseded by this standard) | GB/T 9842-2004 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | GB/T 9842-2018: Specification for urea reactor---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Specification for monthly reactor
ICS 71.120.10
G93
National Standards of People's Republic of China
Replace GB/T 9842-2004
Urea synthesis tower technical conditions
Published on.2018-12-28
2019-11-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword I
1 Scope 1
2 Normative references 1
3 Requirements 1
3.1 Basic requirements 1
3.2 Material 2
3.3 Processing and Forming 4
3.4 Welding 7
3.5 Heat Treatment 7
3.6 Test Board 8
3.7 Nondestructive testing 8
4 Hydraulic test and leakage test 9
5 stainless steel pickling passivation 9
6 Paint, packaging, transportation, marking and factory technical documents 9
6.1 Paint, packaging, transportation and marking 9
6.2 Product Nameplate 10
6.3 Factory technical conditions 10
Reference 11
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 9842-2004 "Technical Conditions for Urea Synthesis Tower", compared with GB/T 9842-2004, except editorial modification
The main technical changes are as follows.
--- Revised the design temperature limit (see Chapter 1, Chapter 1 of the.2004 edition);
--- Removed terms and definitions (see Chapter 3 of the.2004 edition);
--- Increased requirements for urea grade austenitic stainless steel (see 3.2.2.1);
---Modified the chemical composition of the welding material (see Table 2, Table 2 of the.2004 edition);
---Modified the requirements for ultrasonic testing of stainless steel seamless steel tubes with an outer diameter of more than 20 mm [see 3.2.3.2f),.2004 edition
4.2.3.2f)];
---Increased the manufacturing standard of the spherical head, removing the misplaced amount of the butt weld and the spherical head of the integral stamped spherical head
The requirement of the difference between the inner diameter and the inner diameter of the connected barrel section (see 3.3.4.1);
--- Increased the overall multi-layer dressing of the barrel section in processing and forming (see 3.3.5.1);
---Modified the requirement for any single non-adhesive area of the lining [see 3.3.6.2a),.2004 version 4.3.6.2.1];
--- Revised the requirements for the qualification of welding tools (see 3.4.1, 4.4.1 of the.2004 version);
--- Increased requirements for heat treatment heating media to avoid direct injection weldments (see 3.5.6);
--- Removed the content of the leak test ammonia leak test [see.2004 edition of 5.3c)];
--- Increased the content of the leak test leak test [see 4.3c)];
--- Revised the requirements for stainless steel pickling, passivation and implementation standards (see 5.2, 6.2 of.2004 edition);
--- Revised the requirements for the protection of urea synthesis towers using seaborne (see 7.1, 7.1 of.2004 edition).
This standard was proposed by the China Petroleum and Chemical Industry Federation.
This standard is under the jurisdiction of the National Chemical Machinery and Equipment Standardization Technical Committee (SAC/TC429).
This standard was drafted. Sinopec Nanjing Chemical Industry Co., Ltd. Chemical Machinery Plant, Sinopec Nanjing Chemical Machinery Co., Ltd.
Division, Nanjing Dahua Machine Economic and Technical Co., Ltd.
The main drafters of this standard. Han Bing, Hou Lianxiang, Mao Jiacai, Li Yan, Zhou Bingfeng, Liu Aijun, Kong Xiangsheng.
The previous versions of the standards replaced by this standard are.
---GB 9842-1988, GB/T 9842-2004.
Urea synthesis tower technical conditions
1 Scope
This standard specifies the requirements of urea synthesis tower in urea plant, hydraulic test and leakage test, pickling passivation of stainless steel, paint, package
Equipment, transportation, signs and technical documents.
This standard is applicable to urea grade ultra-low carbon austenitic stainless steel with design pressure not more than 21.6MPa and design temperature not more than.200 °C.
(hereinafter referred to as stainless steel) lining urea synthesis tower.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 150 (all parts) pressure vessel
GB/T 983 stainless steel electrode
GB/T 1220 stainless steel rod
GB/T 4226 stainless steel cold-worked steel rod
GB/T 5777-2008 Seamless steel tube ultrasonic flaw detection method
GB/T 13296 stainless steel seamless steel pipe for boilers and heat exchangers
GB/T 14976 stainless steel seamless pipe for fluid transportation
GB/T 25150 Standard Test Method for Austenitic Stainless Steel Passivation Films in Chemical Cleaning of Industrial Equipment - Blue Point Method
GB/T 25151.1 Inspection methods for the manufacture of high-pressure equipment for urea - Part 1 . Ultrasonic testing of stainless steel strips
GB/T 25151.2 Determination of urea high-pressure equipment - Part 2. Selection of urea-grade ultra-low carbon chromium-nickel-molybdenum austenitic stainless steel
Sex corrosion inspection and metallographic examination
GB/T 25151.3 Inspection methods for the manufacture of high-pressure equipment for urea - Part 3. Ultra-low-carbon chromium-nickel-molybdenum austenitic stainless steel
Corrosion tendency test
GB/T 25151.4 Inspection methods for the manufacture of high-pressure equipment - Part 4. s.
Sample preparation for corrosion tendency test
GB/T 25151.6 - Methods of test for the manufacture of high-pressure equipment - Part 6
GB/T 25198 pressure vessel head
HG/T 3179 Urea High Pressure Equipment Surfacing Process Assessment and Welder Skill Assessment
Welding procedure qualification and welder skill evaluation of HG/T 3180 urea high-pressure equipment lining plate and internal parts
JB/T 4711 Pressure Vessel Coating and Transport Packaging
NB/T 47013.1 Non-destructive testing of pressure equipment - Part 1. General requirements
NB/T 47013.2-2015 Non-destructive testing of pressure equipment - Part 2. Radiographic testing
NB/T 47013.5-2015 Non-destructive testing of pressure equipment - Part 5. Penetration testing
NB/T 47016 Mechanical properties test of welded test pieces for pressure equipment
3 requirements
3.1 Basic requirements
In addition to complying with this standard, the manufacture of urea synthesis towers shall also comply with the relevant provisions of GB/T 150 and the requirements of drawings.
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