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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
蓄熱燃燒法工業有機廢氣治理工程技術規范
1 適用范圍
本標準規定了蓄熱燃燒法工業有機廢氣治理工程的設計、施工、驗收和運行維護的技術要求。
本標準適用于蓄熱燃燒法工業有機廢氣治理工程的建設與運行管理，可作為建設項目環境影響評價、環境保護設施的工程咨詢、設計、施工、驗收及建成后運行與管理的參考依據。
2 規范性引用文件
本標準內容引用了下列文件中的條款。凡是不注日期的引用文件，其最新版本適用于本標準。
GB 912 碳素結構鋼和低合金結構鋼熱軋薄鋼板和鋼帶
GB 2893 安全色
GB 2894 安全標志及其使用導則
GB/T 3003 耐火材料陶瓷纖維及制品
GB/T 3077 合金結構鋼
GB 4053.1 固定式鋼梯及平臺安全要求第1部分：鋼直梯
GB 4053.2 固定式鋼梯及平臺安全要求第2部分：鋼斜梯
GB 4053.3 固定式鋼梯及平臺安全要求第3部分：工業防護欄桿及鋼平臺
GB 7231 工業管道的基本識別色、識別符號和安全標識
GB/T 11835 絕熱用巖棉、礦渣棉及其制品
GB 12348 工業企業廠界噪聲標準
GB/T 13275 一般用途離心通風機技術條件
GB/T 13347石油氣體管道阻火器
GB/T 13869 用電安全導則
GB 15930 建筑通風和排煙系統用防火閥門
GB/T 16157 固定污染源排氣中顆粒物測定和氣態污染物采樣方法
GB/T 19686 建筑用巖棉、礦渣棉絕熱制品
GB/T 19839 工業燃油燃氣燃燒器通用技術條件
GB 50016 建筑設計防火規范
GB 50019 采暖通風與空氣調節設計規范
GB 50029 壓縮空氣站設計規范
GB 50051 排氣筒設計規范
GB 50057 建筑物防雷設計規范
GB 50058 爆炸和火災危險環境電力裝置設計規范
GB/T 50087 工業企業噪聲控制設計規范
GB 50140 建筑滅火器配置設計規范
GB 50160 石油化工企業設計防火規范
GB 50187 工業企業總平面設計規范
HJ/T 1 氣體參數測量和采樣的固定位裝置
HJ/T 38 固定污染源排氣中非甲烷總烴的測定氣相色譜法
HJ/T 397 固定源廢氣監測技術規范
HJ 732 固定污染源廢氣揮發性有機物的采樣氣袋法
HJ 734 固定污染源廢氣揮發性有機物的測定固相吸附-熱脫附/氣相色譜-質譜法
HJ 2000 大氣污染治理工程技術導則
AQ 3009 危險場所電氣防爆安全規范
GBZ 1 工業企業設計衛生標準
GBZ 2.1 工作場所有害因素職業接觸限值第1部分：化學有害因素
GBZ 2.2 工作場所有害因素職業接觸限值第2部分：物理因素
HGJ 229 工業設備、管道防腐蝕工程施工及驗收規范
HG/T 20642 化學工業爐耐火陶瓷纖維爐襯設計技術規定
JC/T 2135 蜂窩陶瓷蓄熱體
SGBZ-0805 風管及部件保溫施工工藝標準
SH/T 3038 石油化工企業生產裝置電力設計技術規范
《建設項目環境保護管理條例》（2017年7月16日修訂）
《建設項目竣工環境保護驗收暫行辦法》（國環規環評[2017]4號）
3 術語和定義
下列術語和定義適用于本標準。
3.1 揮發性有機物 volatile organic compounds（VOCs）
參與大氣光化學反應的有機化合物，或者根據有關規定確定的有機化合物。
在表征 VOCs 總體排放情況時，根據行業特征和環境管理要求，可采用總揮發性有機物（以 TVOC 表示）、非甲烷總烴（以NMHC 表示）作為污染物控制項目。
3.2 工業有機廢氣industrial organic waste gas
指工業生產過程排出的含揮發性有機物的廢氣。
3.3 蓄熱燃燒裝置 regenerative thermal oxidizer（RTO）
指將工業有機廢氣進行燃燒凈化處理，并利用蓄熱體對待處理廢氣進行換熱升溫、對凈化后排氣進行換熱降溫的裝置。蓄熱燃燒裝置通常由換向設備、蓄熱室、燃燒室和控制系統等組成。
3.4 蓄熱體 heat transfer media
指在蓄熱燃燒裝置運行過程中實現熱量儲存與交換的功能材料。
3.5 換向設備 divert device
指改變待處理廢氣和凈化后排氣流向的閥門或旋轉式氣體分配器。
3.6 換向時間interval time
指氣體流向改變的間隔時間。
3.7 凈化效率 purification efficiency
指蓄熱燃燒裝置處理的VOCs質量流量與進入蓄熱燃燒裝置的VOCs質量流量之比，以百分數表示。計算公式如下：
凈化效率? CinQin ? CoutQout ?100% （1）
CinQin
式中：
Cin——標準狀態下，蓄熱燃燒裝置進口污染物濃度，mg/m3； Cout——標準狀態下，蓄熱燃燒裝置出口污染物濃度，mg/m3； Qin ——標準狀態下，蓄熱燃燒裝置進口干氣體流量，m3/h； Qout ——標準狀態下，蓄熱燃燒裝置出口干氣體流量，m3/h。
3.8 熱回收效率 thermal energy recovery
指蓄熱燃燒裝置內預熱廢氣實際利用熱量與最大可利用熱量之比，以百分數表示。計算公式如下：
熱回收效率?
式中：
Tcom
Tcom
? Tout
? Tin
? 100% （2）
Tcom——蓄熱燃燒裝置燃燒室溫度，℃； Tin——蓄熱燃燒裝置進口廢氣溫度，℃； Tout——蓄熱燃燒裝置出口排氣溫度，℃。
3.9 自持燃燒self-sustaining combustion
指僅依靠廢氣中可燃物燃燒所釋放出來的熱量維持RTO在設定溫度下正常運行的燃燒過程。
3.10 爆炸極限 explosive limit
指可燃氣體或蒸氣與空氣混合后能發生爆炸的濃度范圍。
3.11 爆炸極限下限 lower explosive limit（LEL）
指爆炸極限的最低濃度值。
3.12 蓄熱室截面風速 regenerative chamber cross-section velocity
指標準狀態下，待處理有機廢氣經過蓄熱室截面的表觀風速。
4 污染物與污染負荷
4.1 工程設計風量和VOCs 設計濃度應以實測值為基礎并充分考慮變化趨勢后綜合確定，亦可通過與同類工程類比確定。
4.2 應根據工程設計需要收集工業有機廢氣理化性質等原始資料，主要包括以下內容：
a）廢氣風量（正常值、最大值、最小值）；
b）廢氣溫度（正常值、最大值、最小值）；
c）廢氣壓力、濕度、含氧量；
d）廢氣中VOCs 組分及濃度（正常值、最大值、最小值）；
e）廢氣中無機氣體的組分及濃度（正常值、最大值、最小值）；
f）廢氣中顆粒物濃度；
g）產生污染物設備情況及工作制度；
h）廢氣排放方式（連續、間歇、波動周期）。
4.3 進入蓄熱燃燒裝置的有機物濃度應低于其爆炸極限下限的 25%。
4.4 當有機物濃度不足以支持自持燃燒時,宜適當濃縮后再進入蓄熱燃燒裝置。
4.5 對于含有混合有機物的廢氣，其控制濃度P 應低于最易爆組分或混合氣體爆炸極限下限最低值的 25%， 即P
