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NB/T 11438-2023: Operation guideline of circulating fluidized bed gasifiers
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| NB/T 11438-2023 | English | 309 |
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Operation guideline of circulating fluidized bed gasifiers
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NB/T 11438-2023
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Basic data | Standard ID | NB/T 11438-2023 (NB/T11438-2023) | | Description (Translated English) | Operation guideline of circulating fluidized bed gasifiers | | Sector / Industry | Energy Industry Standard (Recommended) | | Classification of Chinese Standard | D24 | | Classification of International Standard | 73.040 | | Word Count Estimation | 14,125 | | Date of Issue | 2023-12-28 | | Date of Implementation | 2024-06-28 | | Issuing agency(ies) | National Energy Administration | NB/T 11438-2023: Operation guideline of circulating fluidized bed gasifiers---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.
NB/T 11438-2023 English version. Operation guideline of circulating fluidized bed gasifiers
ICS 73.040
CCSD24
Energy Industry Standards of the People's Republic of China
Operating Guidelines for Circulating Fluidized Bed Gasifiers
Released on 2023-12-28
2024-06-28 Implementation
The National Energy Administration released
Table of Contents
Preface III
1 Scope 1
2 Normative references 1
3 Terms and Definitions 1
4 General Requirements 1
5 Start 1
5.1 Check before starting 1
5.2 Preparation before starting 2
5.3 Start operation 2
6 Gasification operation 3
6.1 Gasification operation principles 3
6.2 Gasification operation regulation principles 3
6.3 Regular inspections 4
6.4 Automatic control, program control, interlocking and protection devices 4
7 Normal shutdown 4
7.1 Preparation before shutdown 4
7.2 Shutdown Step 4
7.3 Shutdown precautions 5
8 Fault shutdown 5
8.1 General 5
8.2 Emergency shutdown due to fault 5
8.3 Fault request to shut down the furnace 5
8.4 Fault Shutdown Step 5
9 Troubleshooting 6
9.1 General 6
9.2 Feeding system failure 6
9.3 Slag discharge system failure 6
9.4 Ash conveying system failure 6
Appendix A (Informative) Major equipment failure phenomena, causes and treatment measures 7
Foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for standardization work Part 1.Structure and drafting rules for standardization documents"
Drafting.
Please note that some of the contents of this document may involve patents. The issuing organization of this document does not assume the responsibility for identifying patents.
This document was proposed by the China Coal Industry Association.
This document is under the jurisdiction of the National Coal Chemical Industry Standardization Technical Committee (SAC/TC469).
This document was drafted by. Institute of Engineering Thermophysics, Chinese Academy of Sciences, and Hefei Coal Gasification Technology Co., Ltd.
The main drafters of this document are. Zhu Zhiping, Zhan Yueping, Zhang Haixia, Lü Qinggang, Chai Zhen, Meng Guangjun, Yu Kuangshi and Gao Ming.
Operating Guidelines for Circulating Fluidized Bed Gasifiers
1 Scope
This document specifies the startup, operation, shutdown, fault analysis and handling principles of circulating fluidized bed gasifiers and major auxiliary equipment.
This document is applicable to the daily operation of the circulating fluidized bed gasifier after commissioning, and can be used as a reference for other fluidized bed gasifiers.
2 Normative references
The contents of the following documents constitute the essential clauses of this document through normative references in this document.
For referenced documents without a date, only the version corresponding to that date applies to this document; for referenced documents without a date, the latest version (including all amendments) applies to
This document.
GB/T 150.4 Pressure vessels Part 4.Manufacturing, inspection and acceptance
GB 6222 Gas Safety Regulations for Industrial Enterprises
GB 16912 Safety technical regulations for the production of oxygen and related gases by deep freezing
GB/T 20801.5 Pressure piping specification Industrial piping Part 5.Inspection and testing
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Fluidized bed gasifier
A gasification device that uses a fluidized bed as a gasification reactor to produce coal gas.
3.2
Circulating fluidized bed gasifier
A gasification device that uses a circulating fluidized bed as a gasification reactor to produce coal gas.
4 General requirements
Before the gasifier is put into operation, all kinds of fire protection facilities should be inspected and accepted, and safety and environmental protection facilities should meet the requirements; the unit using the gasifier should require the gasifier to
The furnace technology provider provides complete design basic data.
5 Startup
5.1 Check before starting
5.1.1 Gasifier Inspection
Gasifier inspection shall meet the following requirements.
a) The refractory material of the gasifier body is not damaged, and there is no coke slag and ash accumulation on the surface;
b) The feed port, return port and slag discharge port of the gasifier are unobstructed and free of blockage;
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