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This standard is formulated with a view to implementing laws and regulations such as the Environmental protection law of the People's Republic of China and the Law of the People's Republic of China on the prevention and control of atmospheric pollution, controlling environment pollution, improving ecological environment quality and regulating the construction and operation management of industrial organic waste gas treatment.
This standard specifies the technical requirements for design, construction, acceptance, operation and maintenance of industrial organic waste gas treatment by regenerative thermal oxidation.
This standard is a directive standard.
This standard is issued for the first time.
This standard is formulated by the Department of Technology and Finance and the Department of Laws and Regulations and Standards under the Ministry of Ecology and Environment.
Chief drafting organizations of this standard: China Association of Environmental Protection Industry, Beijing Municipal Research Institute of Environmental Protection, Jiangsu Cec-ricm Energy Conservation Technology Co., Ltd., Anguil Environmental Protection Technology (Shanghai) Co., Ltd., Yangzhou Hengtong Environmental Protection Technology Co., Ltd. and ComEnCo (Hangzhou) Environmental Equipment Co., Ltd.
This standard was approved by the Ministry of Ecology and Environment on January 13, 2020.
This standard shall be implemented from January 14, 2020.
The Ministry of Ecology and Environment is responsible for the explanation of this standard.
Technical specifications for industrial organic waste gas treatment by regenerative thermal oxidation
1 Scope
This standard specifies the technical requirements for design, construction, acceptance, operation and maintenance of industrial organic waste gas treatment by regenerative thermal oxidation.
It is applicable to the construction and operation management of industrial organic waste gas treatment by regenerative thermal oxidation, and may be used as reference for environmental impact assessment of construction projects, engineering consultation, design, construction and acceptance of environmental protection facilities, and operation and management after completion.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For undated references, the latest edition of the document referred to applies.
GB 912 Hot-rolled sheets and strips of carbon structural steels and high strength low alloy structural steels
GB 2893 Safety colours
GB 2894 Safety signs and guideline for the use
GB/T 3003 Refractory fibres and the products
GB/T 3077 Alloy structure steels
GB 4053.1 Safety requirements for fixed steel ladders and platform - Part 1: Steel vertical ladders
GB 4053.2 Safety requirements for fixed steel ladders and platform - Part 2: Steel inclined ladders
GB 4053.3 Safety requirements for fixed steel ladders and platform - Part 3: Industrial guardrails and steel platform
GB 7231 Basic identification colors and code indications and safety sign for industrial pipelines
GB/T 11835 Rock wool, slag wool and it's products for thermal insulation
GB 12348 Standard of noise at boundary of industrial enterprises
GB/T 13275 Technical specification for general purposes centrifugal fans
GB/T 13347 Flame arresters for petroleum gas pipeline systems
GB/T 13869 General guide for safety of electric user
GB 15930 Fire dampers for building venting and smoke-venting system
GB/T 16157 Determination of particulates and sampling methods of gaseous pollutants emitted from exhaust gas of stationary source
GB/T 19686 Rock wool thermal insulation products for building applications
GB/T 19839 General specification for industrial oil and gas burners
GB 50016 Code for fire protection design of buildings
GB 50019 Code for design of heating ventilation and air conditioning
GB 50029 Code for design of compressed air station
GB 50051 Code for design of chimneys
GB 50057 Code for design protection of structures against lightning
GB 50058 Specifications for the design of electric systems in places with explosion and fire
GB/T 50087 Code for design of noise control of industrial enterprises
GB 50140 Code for design of extinguisher distribution in buildings
GB 50160 Fire prevention code of petrochemical enterprise design
GB 50187 Code for design of general plan of industrial enterprises
HJ/T 1 Fixing installation for gas measuring and sampling
HJ/T 38 Stationary source emission - Determination of nonmethane hydrocarbons - Gas chromatography
HJ/T 397 Technical specifications for emission monitoring of stationary source
HJ 732 Emission from stationary sources - Sampling of volatile organic compounds - Bags method
HJ 734 Stationary source emission - Determination of volatile organic compounds - Sorbent adsorption and thermal desorption gas chromatography mass spectrometry method
HJ 2000 Technical guidelines for air pollution control projects
AQ 3009 Safety criterion for electrical apparatus in hazardous areas
GBZ 1 Hygienic standards for the design of industrial enterprises
GBZ 2.1 Occupational exposure limits for hazardous agents in the workplace - Part 1: Chemical hazardous agents
GBZ 2.2 Occupational exposure limits for hazardous agents in the workplace - Part 2: Physical agents
HGJ 229 Code for construction and acceptance of anticorrosive engineering or industrial equipment and pipeline
HG/T 20642 Specification for design in refractory fibre linings for chemical industrial furnace
JC/T 2135 Honeycomb ceramic heat accumulator
SGBZ-0805 Construction technology standard for heat preservation of air ducts and components
SH/T 3038 Specification for electric power design in petrochemical plants
Regulations on the administration of construction project environmental protection (revised on July 16, 2017)
Interim measures for the acceptance of environmental protection for the completion of construction projects (GUOHUANGUIHUANPING [2017] No.4)
3 Terms and definitions
For the purpose of this standard, the following terms and definitions apply.
3.1
volatile organic compounds (VOCs)
organic compound that participates in atmospheric photochemical reactions, or is defined in accordance with relevant provisions
In characterizing the overall emissions of VOCs, total volatile organic compounds (in TVOC) and non-methane total hydrocarbons (in NMHC) can be used as pollutant control items based on industry characteristics and environmental management requirements.
3.2
industrial organic waste gas
waste gas containing volatile organic compounds emitted in industrial production process
3.3
regenerative thermal oxidizer (RTO)
device that purifies industrial organic waste gas by combustion and applies heat transfer media for heat exchange and heating up of the waste gas to be treated as well as heat exchange and cooling down of the purified exhaust gas, which is usually composed of divert device, regenerative chamber, combustion chamber and control system, etc.
3.4
heat transfer media
functional materials that realize heat storage and exchange during the operation of the RTO
3.5
divert device
valve or rotary gas distributor that changes the flow direction of waste gas to be treated and purified exhaust gas
3.6
interval time
interval between changes in gas flow direction
3.7
purification efficiency
ratio of mass flow of VOCs processed by the RTO to that of VOCs entering the RTO, in %. The following equation applies:
(1)
where,
Cin——the concentration of pollutants at the inlet of RTO under standard condition, mg/m3;
Cout——the concentration of pollutants at the outlet of RTO under standard condition, mg/m3;
Qin——the dry gas flow at the inlet of RTO under standard condition, m3/h;
Qout——the dry gas flow at the outlet of RTO under standard condition, m3/h.
3.8
thermal energy recovery
ratio of actual heat utilization and maximum available heat of preheated waste gas in the RTO, in % The following equation applies:
(2)
where,
Tcom——the temperature in the combustion chamber of the RTO, ℃;
Tin——the waste gas temperature at the inlet of the RTO, ℃;
Tout——the waste gas temperature at the outlet of the RTO, ℃.
3.9
self-sustaining combustion
combustion process that only depends on the heat released by burning combustibles in waste gas to maintain the normal operation of the RTO at the set temperature
3.10
explosive limit
concentration range where a mixture of combustible gas/vapor and air can explode
3.11
lower explosive limit (LEL)
lowest concentration value of explosive limit
3.12
regenerative chamber cross-section velocity
apparent wind velocity of organic waste gas to be treated passing through the regenerative chamber cross-section under standard condition
4 Pollutants and pollution load
4.1 Design air volume and VOCs design concentration of the engineering shall be comprehensively determined based on the measured values and fully considering the change trend, and can also be determined by analogy with similar engineering.
4.2 Original data such as physical and chemical properties of industrial organic waste gas shall be collected according to engineering design requirements, mainly including the following contents:
a) waste gas air volume (normal value, maximum value and minimum value);
b) waste gas temperature (normal value, maximum value and minimum value);
c) waste gas pressure, humidity and oxygen content;
d) component and concentration of VOCs in waste gas (normal value, maximum value and minimum value);
e) component and concentration of inorganic waste gas in waste gas (normal value, maximum value and minimum value);
f) concentration of particulate matter in waste gas;
g) condition and working system for equipment generating pollutants;
h) waste gas emission mode (continuous, intermittent or fluctuating period).
4.3 The concentration of organic compound entering the RTO shall be less than 25% of the LEL.
4.4 When the organic compound concentration is insufficient to support self-sustaining combustion, it should be properly concentrated before entering the RTO.
4.5 For the waste gas containing mixed organic compound, the control concentration P shall be less than 25% of the lowest value of LEL of the most explosive component or the mixed gas, that is, P
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Pollutants and pollution load
5 General
6 Process design
7 Main process equipment and materials
8 Testing and process control
9 Main auxiliary works
10 Labor safety and occupational health
11 Construction, debugging and acceptance
12 Operation and maintenance
蓄热燃烧法工业有机废气治理工程技术规范
1 适用范围
本标准规定了蓄热燃烧法工业有机废气治理工程的设计、施工、验收和运行维护的技术要求。
本标准适用于蓄热燃烧法工业有机废气治理工程的建设与运行管理，可作为建设项目环境影响评价、环境保护设施的工程咨询、设计、施工、验收及建成后运行与管理的参考依据。
2 规范性引用文件
本标准内容引用了下列文件中的条款。凡是不注日期的引用文件，其最新版本适用于本标准。
GB 912 碳素结构钢和低合金结构钢热轧薄钢板和钢带
GB 2893 安全色
GB 2894 安全标志及其使用导则
GB/T 3003 耐火材料陶瓷纤维及制品
GB/T 3077 合金结构钢
GB 4053.1 固定式钢梯及平台安全要求第1部分：钢直梯
GB 4053.2 固定式钢梯及平台安全要求第2部分：钢斜梯
GB 4053.3 固定式钢梯及平台安全要求第3部分：工业防护栏杆及钢平台
GB 7231 工业管道的基本识别色、识别符号和安全标识
GB/T 11835 绝热用岩棉、矿渣棉及其制品
GB 12348 工业企业厂界噪声标准
GB/T 13275 一般用途离心通风机技术条件
GB/T 13347石油气体管道阻火器
GB/T 13869 用电安全导则
GB 15930 建筑通风和排烟系统用防火阀门
GB/T 16157 固定污染源排气中颗粒物测定和气态污染物采样方法
GB/T 19686 建筑用岩棉、矿渣棉绝热制品
GB/T 19839 工业燃油燃气燃烧器通用技术条件
GB 50016 建筑设计防火规范
GB 50019 采暖通风与空气调节设计规范
GB 50029 压缩空气站设计规范
GB 50051 排气筒设计规范
GB 50057 建筑物防雷设计规范
GB 50058 爆炸和火灾危险环境电力装置设计规范
GB/T 50087 工业企业噪声控制设计规范
GB 50140 建筑灭火器配置设计规范
GB 50160 石油化工企业设计防火规范
GB 50187 工业企业总平面设计规范
HJ/T 1 气体参数测量和采样的固定位装置
HJ/T 38 固定污染源排气中非甲烷总烃的测定气相色谱法
HJ/T 397 固定源废气监测技术规范
HJ 732 固定污染源废气挥发性有机物的采样气袋法
HJ 734 固定污染源废气挥发性有机物的测定固相吸附-热脱附/气相色谱-质谱法
HJ 2000 大气污染治理工程技术导则
AQ 3009 危险场所电气防爆安全规范
GBZ 1 工业企业设计卫生标准
GBZ 2.1 工作场所有害因素职业接触限值第1部分：化学有害因素
GBZ 2.2 工作场所有害因素职业接触限值第2部分：物理因素
HGJ 229 工业设备、管道防腐蚀工程施工及验收规范
HG/T 20642 化学工业炉耐火陶瓷纤维炉衬设计技术规定
JC/T 2135 蜂窝陶瓷蓄热体
SGBZ-0805 风管及部件保温施工工艺标准
SH/T 3038 石油化工企业生产装置电力设计技术规范
《建设项目环境保护管理条例》（2017年7月16日修订）
《建设项目竣工环境保护验收暂行办法》（国环规环评[2017]4号）
3 术语和定义
下列术语和定义适用于本标准。
3.1 挥发性有机物 volatile organic compounds（VOCs）
参与大气光化学反应的有机化合物，或者根据有关规定确定的有机化合物。
在表征 VOCs 总体排放情况时，根据行业特征和环境管理要求，可采用总挥发性有机物（以 TVOC 表示）、非甲烷总烃（以NMHC 表示）作为污染物控制项目。
3.2 工业有机废气industrial organic waste gas
指工业生产过程排出的含挥发性有机物的废气。
3.3 蓄热燃烧装置 regenerative thermal oxidizer（RTO）
指将工业有机废气进行燃烧净化处理，并利用蓄热体对待处理废气进行换热升温、对净化后排气进行换热降温的装置。蓄热燃烧装置通常由换向设备、蓄热室、燃烧室和控制系统等组成。
3.4 蓄热体 heat transfer media
指在蓄热燃烧装置运行过程中实现热量储存与交换的功能材料。
3.5 换向设备 divert device
指改变待处理废气和净化后排气流向的阀门或旋转式气体分配器。
3.6 换向时间interval time
指气体流向改变的间隔时间。
3.7 净化效率 purification efficiency
指蓄热燃烧装置处理的VOCs质量流量与进入蓄热燃烧装置的VOCs质量流量之比，以百分数表示。计算公式如下：
净化效率 CinQin CoutQout 100% （1）
CinQin
式中：
Cin——标准状态下，蓄热燃烧装置进口污染物浓度，mg/m3； Cout——标准状态下，蓄热燃烧装置出口污染物浓度，mg/m3； Qin ——标准状态下，蓄热燃烧装置进口干气体流量，m3/h； Qout ——标准状态下，蓄热燃烧装置出口干气体流量，m3/h。
3.8 热回收效率 thermal energy recovery
指蓄热燃烧装置内预热废气实际利用热量与最大可利用热量之比，以百分数表示。计算公式如下：
热回收效率
式中：
Tcom
Tcom
Tout
Tin
100% （2）
Tcom——蓄热燃烧装置燃烧室温度，℃； Tin——蓄热燃烧装置进口废气温度，℃； Tout——蓄热燃烧装置出口排气温度，℃。
3.9 自持燃烧self-sustaining combustion
指仅依靠废气中可燃物燃烧所释放出来的热量维持RTO在设定温度下正常运行的燃烧过程。
3.10 爆炸极限 explosive limit
指可燃气体或蒸气与空气混合后能发生爆炸的浓度范围。
3.11 爆炸极限下限 lower explosive limit（LEL）
指爆炸极限的最低浓度值。
3.12 蓄热室截面风速 regenerative chamber cross-section velocity
指标准状态下，待处理有机废气经过蓄热室截面的表观风速。
4 污染物与污染负荷
4.1 工程设计风量和VOCs 设计浓度应以实测值为基础并充分考虑变化趋势后综合确定，亦可通过与同类工程类比确定。
4.2 应根据工程设计需要收集工业有机废气理化性质等原始资料，主要包括以下内容：
a）废气风量（正常值、最大值、最小值）；
b）废气温度（正常值、最大值、最小值）；
c）废气压力、湿度、含氧量；
d）废气中VOCs 组分及浓度（正常值、最大值、最小值）；
e）废气中无机气体的组分及浓度（正常值、最大值、最小值）；
f）废气中颗粒物浓度；
g）产生污染物设备情况及工作制度；
h）废气排放方式（连续、间歇、波动周期）。
4.3 进入蓄热燃烧装置的有机物浓度应低于其爆炸极限下限的 25%。
4.4 当有机物浓度不足以支持自持燃烧时,宜适当浓缩后再进入蓄热燃烧装置。
4.5 对于含有混合有机物的废气，其控制浓度P 应低于最易爆组分或混合气体爆炸极限下限最低值的 25%， 即P
