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GB/T 45649-2025Technical guidelines for the application of coaxial turbine units in metallurgical waste heat and pressure energy recovery (English PDF)

冶金余热余压能量回收同轴机组应用技术指南

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

April 25, 2025

Implementation date

November 1, 2025

Scope

GB/T 45649-2025 is the English-translated version of 冶金余热余压能量回收同轴机组应用技术指南.

GB/T 45649-2025 is the Chinese national standard covering the machine that puts a turbine, a motor and a blower on one shaft so that blast furnace top pressure or waste heat drives the load directly instead of being turned into electricity first — the application scenarios and the effect expected from each, the selection of the unit, the speed limits and the gearing, the noise control, and the operation and maintenance. First edition, with the lime kiln carbon capture specification GB/T 45647-2025. Under the China Iron and Steel Association. In force from 1 November 2025. Issued on 25 April 2025, it has been in force since 1 November 2025.

Document preview — GB/T 45649-2025

National Standard of the People's Republic of China

ICS: 77-010
Classification: H 04

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Foreword
1 Scope
2 Normative references
3 Terms and definitions
3.1 Coaxial turbine units

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 Iron and Steel Association.

This document is under the jurisdiction of the National Technical Committee on Steel Standardization (SAC/TC183).

This document was drafted by: Xi'an Shaangu Power Co., Ltd., Metallurgical Industry Information Standards Research Institute, Jigang Group International Engineering Technology Co., Ltd. and Hesteel Group Co., Ltd.

The main drafters of this document are: Liu Yongjun, Liu Zhong, Zhang Xiaolong, Huang Meichun, Wang Jiangwei, Yu Huanhuan, Qiu Jinhui, Yan Tao, Qiang Ke, Chen Jian, Luan Yuandi, Liu Haijun, Yang Nan, Ji Tingting, Tan Xiaoping, Zhang Ruopeng, Yu Jingyao, Zhang Yuanchun.

Application of coaxial unit for metallurgical waste heat and pressure energy recovery Technical Guide

1 Scope

This document provides the basic principles, application scenarios, application effects, equipment selection, and clinical application of coaxial units for metallurgical waste heat and pressure energy recovery.

Technical guidelines for speed limit, noise control and equipment operation and maintenance.

This document is applicable to the coaxial unit technology involving the recovery and utilization of waste heat and waste pressure in the metallurgical field, and can be used as a reference in other fields.

2 Normative references

GB/T 755

GB/T 1029

GB/T 1032

GB/T 2888

GB/T 3766

GB/T 3836.1

GB/T 4208

GB/T 8542

GB/T 28246

GB/T 28574

GB/T 50087

GB 50584-2010

3 Terms and definitions

The following terms and definitions apply to this document.

3.1 Coaxial turbine units

A unit driven by two or more energy sources, with the same or different speeds, and working on the same axis.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 755 · GB/T 3766 · GB/T 3836.1 · GB/T 28574 · GB/T 50087 · GB 50584-2010

Editions of GB/T 45649

Edition	Title	Revision	Status
GB/T 45649-2025	Technical guidelines for the application of coaxial turbine units in metallurgical waste heat and pressure energy recovery	current edition	Current

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