標準編號:	GB 37822-2019
中文名稱:	揮發性有機物無組織排放控制標準
英文名稱:	Standard for fugitive emission of volatile organic compounds
中標分類:	Z60    污染物排放綜合
行業分類:	GB    國家標準
ICS分類:	13.040.40 13.040.40    固定源排放限值 13.040.40
發布機構:	中華人民共和國生態環境部 國家市場監督管理總局
發布日期:	2019-05-24
實施日期:	2019-7-1
標準狀態:	valid
翻譯語言:	英文
文件格式:	PDF
中文字符數:	20000 字
翻譯價格(元):	1090.0
交付時間:	付款后 1 個工作日

Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative. This standard is developed with a view to implementing 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 environmental quality and enhancing control and management of fugitive emission of VOCs. This standard specifies the fugitive emission control requirements for VOCs-containing materials storage, VOCs-containing materials transfer and transport and VOCs-containing materials in technological process, as well as VOCs leakage control requirements for equipment and pipeline components, the fugitive emission control requirements for VOCs on uncovered liquid surface, as well as requirements for collection and treatment system of exhaust gas via fugitive emission of VOCs and pollution monitoring requirements for the company's plant and surrounding areas. This standard is issued for the first time. The fugitive emission control of VOCs shall be executed in accordance with the provisions of this standard by new facilities since July 1, 2019, and by the existing facilities since July 1, 2020. Upon approval of provincial people's government, all regions may implement this standard in advance according to the need of local environmental protection and economic and technical conditions. This standard specifies the basic requirements for fugitive emission of VOCs. Local provincial people's government may formulate local pollutant emission standards for the items not specified in this standard; and it may also formulate local pollutant emission standards stricter than this standard for the items specified in this standard. Annex A of this standard is informative. This standard is developed by the Department of Air Environment and the Department of Laws and Regulations and Standards under the Ministry of Ecology and Environment. This standard was approved by the Ministry of Ecology and Environment on April 16, 2019. This standard is implemented from July 1, 2019. The Ministry of Ecology and Environment is in charge of the explanation of this standard. Standard for fugitive emission of volatile organic compounds 1 Application scope This standard specifies the fugitive emission control requirements for VOCs-containing materials storage, VOCs-containing materials transfer and transport and VOCs-containing materials in technological process, as well as VOCs leakage control requirements for equipment and pipeline components, the fugitive emission control requirements for VOCs on uncovered liquid surface, as well as requirements for collection and treatment system of exhaust gas via fugitive emission of VOCs and pollution monitoring requirements for the company's plant and surrounding areas. This standard is applicable to the fugitive emission management of VOCs in existing facilities or production facilities involving fugitive emission of VOCs, as well as the environmental impact assessment, the environmental protection facilities design, the completion environment protection acceptance, and the emission permit issuance of construction projects involving fugitive emissions of VOCs, and fugitive emission management of VOCs after their production. If the national pollutant emission standards issued by the state have stipulated the fugitive emission control of VOCs, they shall be implemented according to the industry pollutant emission standards. If the VOCs fugitive emission control requirements specified in this standard cannot be met due to safety factors or special process requirements, other equivalent pollution control measures may be taken and reported to the local ecological environment authority or implemented in accordance with the relevant requirements of the pollutant emission permit. 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 normative document applies. GB 16297 Comprehensive emission standard of air pollutants GB/T 8017 Standard test method for vapor pressure of petroleum products (Reid method) GB/T 16157 The determination of particulates and sampling methods of gaseous pollutants emitted from exhaust gas of stationary source GB/T 16758 The classification and technical specification of exhaust hood HJ 38 Stationary source emission - Determination of total hydrocarbons, methane and nonmethane hydrocarbons - Gas chromatography HJ/T 55 Technical guidelines for fugitive emission monitoring of air pollutants HJ/T 397 Technical specifications for emission monitoring of stationary source HJ 501 Water quality - Determination of total organic carbon - Combustion oxidation nondispersive infrared absorption method HJ 604 Ambient air - Determination of total hydrocarbons, methane and nonmethane hydrocarbons - Direct injection/Gas chromatography HJ 732 Emission from stationary sources - Sampling of volatile organic compounds - Bags method HJ 733 Guideline for the determination of volatile organic compound leaks and uncovered liquid surface emissions HJ 819 Self-monitoring technology guidelines for pollution sources - General rule HJ 1012 Ambient air and stationary source emission - Specifications and test procedures for hydrocarbons, methane and nonmethane hydrocarbons portable total monitoring instrument HJ 1013 Specifications and test procedures for nonmethane hydrocarbons continuous emission monitoring system in stationary sources AQ/T 4274-2016 Technical specifications for test and evaluation of capture velocity for local exhaust ventilation facilities Measures for Automatic Monitoring and Management of Pollution Sources (Decree No.28 of the State Environmental Protection Administration) Measures for the Administration of Environmental Monitoring (Decree No.39 of the State Environmental Protection Administration) 3 Terms and definitions For the purposes of this standard, the following terms and definitions apply. 3.1 volatile organic compounds (VOCs) an organic compound that participates in atmospheric photochemical reactions, or determined in accordance with relevant provisions In characterizing the overall emissions of VOCs, total volatile organic compounds (expressed as TVOC) and non-methane total hydrocarbons (expressed as NMHC) can be used as pollutant control items based on industry characteristics and environmental management requirements. 3.2 total volatile organic compounds (TVOC) its total amount is the sum of the individual VOCs in the exhaust gas is measured with the specific monitoring method, which is calculated with the mass concentrations of the individual VOCs, in actual work, it is the sum of the individual VOCs, which account for more than 90% of the total, measured according to the expected analysis results 3.3 non-methane hydrocarbons (NMHC) its total amount is the sum of gaseous organic compounds other than methane, responsive to the hydrogen flame ionization detector, based on the mass concentration of carbon 3.4 fugitive emission irregular emission that atmospheric pollutants do not pass through the stack, including the effusion of open workplaces, as well as emissions through gaps, vents, open doors and windows and similar openings (holes) 3.5 closed/close the state or working mode that contaminants are not in contact with ambient air, or are separated from ambient air by sealing materials or sealing equipment 3.6 closed space a closed area or enclosed building formed by a confined structure that blocks pollutants, workplaces, etc. from the surrounding space The windows another opening (hole) of enclosed areas or enclosed buildings shall be kept closed at all times except for the time for entry and leaving of personnel, vehicles, equipment, materials, and stack and vents established according to the law. 3.7 VOCs-containing materials materials with a VOCs mass ratio of 10% or more, and organic polymer materials in this standard The terms of VOCs containing raw and auxiliary materials, VOCs-containing products and VOCs-containing wastes (slag, liquid) in this standard have the same meaning as VOCs-containing materials. 3.8 volatile organic liquid any organic liquid that emits VOCs into the atmosphere and meets one of the following conditions: (1) a single component organic liquid with a true vapor pressure of 0.3 kPa or more; (2) an organic liquid with a true vapor pressure of 0.3 kPa or more and a total mass of 20% or more in the mixture. 3.9 true vapor pressure the saturated vapor pressure (absolute pressure) at the working (storage) temperature of the organic liquid, or the vapor pressure with the liquid vaporization rate of the organic mixture as zero, also known as the bubble point vapor pressure, which can be converted according to the corresponding measurement method specified in GB/T 8017 Note: The working (storage) temperature of an organic liquid that is operated (stored) at normal temperature is calculated as the maximum monthly mean temperature of the year. 3.10 liquid-mounted seal the seal form with the edge of the floating roof is sealed immersed in the liquid surface of the storage material, also known as a liquid mosaic seal 3.11 mechanical shoe seal the seal form with the metal sheet vertically pressed against the storage tank wall by a spring or counterweight lever 3.12 double seals the seal form with a two-layer seal arranged between the edge of the floating roof and the inner wall of the storage tank, which is also called a double-sealed seal The lower seal is called a primary seal and the upper seal is called a secondary seal. 3.13 vapor balancing system a gas connection and balancing system arranged between the loading facility and the storage tank or between the storage tanks. 3.14 leakage detection value the net value of the VOCs concentration of the equipment and pipeline components detected by the instrument with the specified monitoring method deducted by the environmental background value, expressed as the mole fraction of carbon 3.15 open recirculating cooling water system a circulating cooling water system with circulates cooling water in direct contact with the atmosphere 3.16 existing facility industrial enterprises or production facilities that have been established and put into production and whose environmental impact assessment documents have been approved or filed before the date of implementation of this standard 3.17 new facility new, rebuilt and extended construction projects whose environmental impact assessment documents are approved from the implementation date of this standard 3.18 key regions the regions with severe air pollution, or fragile ecological environment, or need for further improvement of ambient air quality and in need for strict control of air pollutant emissions, according to the requirements of environmental protection work 3.19 stack height the height from the ground level of the stack (or its main building structure) to the outlet of the stack, m 3.20 enterprise boundary the legal boundary of the enterprise or production facility If it is difficult to determine the legal boundary, it refers to the actual land occupation boundary of the enterprise or production facility. 4 Scope and time of execution 4.1 The fugitive emission control of VOCs shall be executed in accordance with the provisions of this standard by new facilities since July 1, 2019, and by the existing facilities since July 1, 2020. 4.2 Enterprises in key regions shall implement the special control requirements for fugitive emission, and the geographical scope and time of execution shall be stipulated by the competent department of ecological environment under the State Council or the provincial people's government.

Foreword i 1 Application scope 2 Normative references 3 Terms and definitions 4 Scope and time of execution 5 Fugitive emission control requirements for VOCs-containing materials storage 6 Fugitive emission control requirements for VOCs-containing materials transfer and transport 7 Fugitive emission control requirements for VOCs-containing materials in technological process 8 VOCs leakage control requirements for equipment and pipeline components 9 Fugitive emission control requirements for fugitive emission of VOCs on uncovered liquid surface 10 Requirements for collection and treatment system of exhaust gas via fugitive emission of VOCs 11 Pollution monitoring requirements for the company's plant and its surrounding area 12 Pollutant monitoring requirements 13 Implementation and supervision Annex A (Informative) Monitoring requirements for fugitive emission of VOCs in the plant

揮發性有機物無組織排放控制標準 1 適用范圍 本標準規定了VOCs物料儲存無組織排放控制要求、VOCs物料轉移和輸送無組織排放控制要求、工藝過程VOCs無組織排放控制要求、設備與管線組件VOCs泄漏控制要求、敞開液面VOCs無組織排放控制要求，以及VOCs無組織排放廢氣收集處理系統要求、企業廠區內及周邊污染監控要求。 本標準適用于涉及VOCs無組織排放的現有企業或生產設施的VOCs無組織排放管理，以及涉及VOCs無組織排放的建設項目的環境影響評價、環境保護設施設計、竣工環境保護驗收、排污許可證核發及其投產后的VOCs無組織排放管理。 國家發布的行業污染物排放標準中對VOCs無組織排放控制已作規定的，按行業污染物排放標準執行。 因安全因素或特殊工藝要求不能滿足本標準規定的VOCs無組織排放控制要求，可采取其他等效污染控制措施，并向當地生態環境主管部門報告或依據排污許可證相關要求執行。 2 規范性引用文件 本標準引用了下列文件或其中的條款。凡是未注明日期的引用文件，其最新版本適用于本標準。 GB 16297 大氣污染物綜合排放標準 GB/T 8017 石油產品蒸氣壓的測定 雷德法 GB/T 16157 固定污染源排氣中顆粒物測定與氣態污染物采樣方法 GB/T 16758 排風罩的分類及技術條件 HJ 38 固定污染源廢氣 總烴、甲烷和非甲烷總烴的測定 氣相色譜法 HJ/T 55 大氣污染物無組織排放監測技術導則 HJ/T 397 固定源廢氣監測技術規范 HJ 501 水質 總有機碳的測定 燃燒氧化-非分散紅外吸收法 HJ 604 環境空氣 總烴、甲烷和非甲烷總烴的測定 直接進樣-氣相色譜法 HJ 732 固定污染源廢氣 揮發性有機物的采樣 氣袋法 HJ 733 泄漏和敞開液面排放的揮發性有機物檢測技術導則 HJ 819 排污單位自行監測技術指南 總則 HJ 1012 環境空氣和廢氣 總烴、甲烷和非甲烷總烴便攜式監測儀技術要求及檢測方法 HJ 1013 固定污染源廢氣非甲烷總烴連續監測系統技術要求及檢測方法 AQ/T 4274—2016 局部排風設施控制風速檢測與評估技術規范 《污染源自動監控管理辦法》（國家環境保護總局令 第28號） 《環境監測管理辦法》（國家環境保護總局令 第39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 總揮發性有機物 total volatile organic compounds（TVOC） 采用規定的監測方法，對廢氣中的單項VOCs物質進行測量，加和得到VOCs物質的總量，以單項VOCs物質的質量濃度之和計。實際工作中，應按預期分析結果，對占總量90%以上的單項VOCs物質進行測量，加和得出。 3.3 非甲烷總烴 non-methane hydrocarbons（NMHC） 采用規定的監測方法，氫火焰離子化檢測器有響應的除甲烷外的氣態有機化合物的總和，以碳的質量濃度計。 3.4 無組織排放 fugitive emission 大氣污染物不經過排氣筒的無規則排放，包括開放式作業場所逸散，以及通過縫隙、通風口、敞開門窗和類似開口（孔）的排放等。 3.5 密閉 closed/close 污染物質不與環境空氣接觸，或通過密封材料、密封設備與環境空氣隔離的狀態或作業方式。 3.6 密閉空間 closed space 利用完整的圍護結構將污染物質、作業場所等與周圍空間阻隔所形成的封閉區域或封閉式建筑物。該封閉區域或封閉式建筑物除人員、車輛、設備、物料進出時，以及依法設立的排氣筒、通風口外，門窗及其他開口（孔）部位應隨時保持關閉狀態。 3.7 VOCs物料 VOCs-containing materials 本標準是指VOCs質量占比大于等于10%的物料，以及有機聚合物材料。 本標準中的含VOCs原輔材料、含VOCs產品、含VOCs廢料（渣、液）等術語的含義與VOCs物料相同。 3.8 揮發性有機液體 volatile organic liquid 任何能向大氣釋放VOCs的符合下列條件之一的有機液體： （1）真實蒸氣壓大于等于0.3 kPa的單一組分有機液體； （2）混合物中，真實蒸氣壓大于等于0.3 kPa的組分總質量占比大于等于20%的有機液體。 3.9 真實蒸氣壓 true vapor pressure 有機液體工作（儲存）溫度下的飽和蒸氣壓（絕對壓力），或者有機混合物液體氣化率為零時的蒸氣壓，又稱泡點蒸氣壓，可根據GB/T 8017等相應測定方法換算得到。 注：在常溫下工作（儲存）的有機液體，其工作（儲存）溫度按常年的月平均氣溫最大值計算。 3.10 浸液式密封 liquid-mounted seal 浮頂的邊緣密封浸入儲存物料液面的密封形式，又稱液體鑲嵌式密封。 3.11 機械式鞋形密封 mechanical shoe seal 通過彈簧或配重杠桿使金屬薄板垂直緊抵于儲罐罐壁上的密封形式。 3.12 雙重密封 double seals 浮頂邊緣與儲罐內壁間設置兩層密封的密封形式，又稱雙封式密封。下層密封稱為一次密封，上層密封稱為二次密封。 3.13 氣相平衡系統 vapor balancing system 在裝載設施與儲罐之間或儲罐與儲罐之間設置的氣體連通與平衡系統。 3.14 泄漏檢測值 leakage detection value 采用規定的監測方法，檢測儀器探測到的設備與管線組件泄漏點的VOCs濃度扣除環境本底值后的凈值，以碳的摩爾分數表示。 3.15 開式循環冷卻水系統 open recirculating cooling water system 循環冷卻水與大氣直接接觸散熱的循環冷卻水系統。 3.16 現有企業 existing facility 本標準實施之日前已建成投產或環境影響評價文件已通過審批或備案的工業企業或生產設施。 3.17 新建企業 new facility 自本標準實施之日起環境影響評價文件通過審批或備案的新建、改建和擴建的工業建設項目。 3.18 重點地區 key regions 根據環境保護工作要求，對大氣污染嚴重，或生態環境脆弱，或有進一步環境空氣質量改善需求等，需要嚴格控制大氣污染物排放的地區。 3.19 排氣筒高度 stack height 自排氣筒（或其主體建筑構造）所在的地平面至排氣筒出口計的高度，單位為m。 3.20 企業邊界 enterprise boundary 企業或生產設施的法定邊界。若難以確定法定邊界，則指企業或生產設施的實際占地邊界。 4 執行范圍與時間 4.1 新建企業自2019年7月1日起，現有企業自2020年7月1日起，VOCs無組織排放控制按照本標準的規定執行。 4.2 重點地區的企業執行無組織排放特別控制要求，執行的地域范圍和時間由國務院生態環境主管部門或省級人民政府規定。 5 VOCs物料儲存無組織排放控制要求 5.1 基本要求 5.1.1 VOCs物料應儲存于密閉的容器、包裝袋、儲罐、儲庫、料倉中。 5.1.2 盛裝VOCs物料的容器或包裝袋應存放于室內，或存放于設置有雨棚、遮陽和防滲設施的專用場地。盛裝VOCs物料的容器或包裝袋在非取用狀態時應加蓋、封口，保持密閉。 5.1.3 VOCs物料儲罐應密封良好，其中揮發性有機液體儲罐應符合5.2條規定。 5.1.4 VOCs物料儲庫、料倉應滿足3.6條對密閉空間的要求。 5.2 揮發性有機液體儲罐 5.2.1 儲罐控制要求 5.2.1.1 儲存真實蒸氣壓≥76.6 kPa且儲罐容積≥75 m3的揮發性有機液體儲罐，應采用低壓罐、壓力罐或其他等效措施。 5.2.1.2 儲存真實蒸氣壓≥27.6 kPa但＜76.6 kPa且儲罐容積≥75 m3的揮發性有機液體儲罐，應符合下列規定之一： a）采用浮頂罐。對于內浮頂罐，浮頂與罐壁之間應采用浸液式密封、機械式鞋形密封等高效密封方式；對于外浮頂罐，浮頂與罐壁之間應采用雙重密封，且一次密封應采用浸液式密封、機械式鞋形密封等高效密封方式。 b）采用固定頂罐，排放的廢氣應收集處理并滿足相關行業排放標準的要求（無行業排放標準的應滿足GB 16297的要求），或者處理效率不低于80%。 c）采用氣相平衡系統。 d）采取其他等效措施。 5.2.2 儲罐特別控制要求 5.2.2.1 儲存真實蒸氣壓≥76.6 kPa的揮發性有機液體儲罐，應采用低壓罐、壓力罐或其他等效措施。 5.2.2.2 儲存真實蒸氣壓≥27.6 kPa但＜76.6 kPa且儲罐容積≥75 m3的揮發性有機液體儲罐，以及儲存真實蒸氣壓≥5.2 kPa但＜27.6 kPa且儲罐容積≥150 m3的揮發性有機液體儲罐，應符合下列規定之一： a）采用浮頂罐。對于內浮頂罐，浮頂與罐壁之間應采用浸液式密封、機械式鞋形密封等高效密封方式；對于外浮頂罐，浮頂與罐壁之間應采用雙重密封，且一次密封應采用浸液式密封、機械式鞋形密封等高效密封方式。 b）采用固定頂罐，排放的廢氣應收集處理并滿足相關行業排放標準的要求（無行業排放標準的應滿足GB 16297的要求），或者處理效率不低于90%。 c）采用氣相平衡系統。 d）采取其他等效措施。 5.2.3 儲罐運行維護要求 5.2.3.1 浮頂罐 a）浮頂罐罐體應保持完好，不應有孔洞、縫隙。浮頂邊緣密封不應有破損。 b）儲罐附件開口（孔），除采樣、計量、例行檢查、維護和其他正常活動外，應密閉。 c）支柱、導向裝置等儲罐附件穿過浮頂時，應采取密封措施。 d）除儲罐排空作業外，浮頂應始終漂浮于儲存物料的表面。 e）自動通氣閥在浮頂處于漂浮狀態時應關閉且密封良好，僅在浮頂處于支撐狀態時開啟。 f）邊緣呼吸閥在浮頂處于漂浮狀態時應密封良好，并定期檢查定壓是否符合設定要求。 g）除自動通氣閥、邊緣呼吸閥外，浮頂的外邊緣板及所有通過浮頂的開孔接管均應浸入液面下。 5.2.3.2 固定頂罐 a）固定頂罐罐體應保持完好，不應有孔洞、縫隙。 b）儲罐附件開口（孔），除采樣、計量、例行檢查、維護和其他正常活動外，應密閉。 c）定期檢查呼吸閥的定壓是否符合設定要求。 5.2.3.3 維護與記錄 揮發性有機液體儲罐若不符合5.2.3.1條或5.2.3.2條規定，應記錄并在90 d內修復或排空儲罐停止使用。如延遲修復或排空儲罐，應將相關方案報生態環境主管部門確定。 6 VOCs物料轉移和輸送無組織排放控制要求 6.1 基本要求 6.1.1 液態VOCs物料應采用密閉管道輸送。采用非管道輸送方式轉移液態VOCs物料時，應采用密閉容器、罐車。 6.1.2 粉狀、粒狀VOCs物料應采用氣力輸送設備、管狀帶式輸送機、螺旋輸送機等密閉輸送方式，或者采用密閉的包裝袋、容器或罐車進行物料轉移。 6.1.3 對揮發性有機液體進行裝載時，應符合6.2條規定。 6.2 揮發性有機液體裝載 6.2.1 裝載方式 揮發性有機液體應采用底部裝載方式；若采用頂部浸沒式裝載，出料管口距離槽（罐）底部高度應小于200 mm。 6.2.2 裝載控制要求 裝載物料真實蒸氣壓≥27.6 kPa且單一裝載設施的年裝載量≥500 m3的，裝載過程應符合下列規定之一： a）排放的廢氣應收集處理并滿足相關行業排放標準的要求（無行業排放標準的應滿足GB 16297的要求），或者處理效率不低于80%； b）排放的廢氣連接至氣相平衡系統。 6.2.3 裝載特別控制要求 裝載物料真實蒸氣壓≥27.6 kPa且單一裝載設施的年裝載量≥500 m3，以及裝載物料真實蒸氣壓≥5.2 kPa但＜27.6 kPa且單一裝載設施的年裝載量≥2500 m3的，裝載過程應符合下列規定之一： a）排放的廢氣應收集處理并滿足相關行業排放標準的要求（無行業排放標準的應滿足GB 16297的要求），或者處理效率不低于90%； b）排放的廢氣連接至氣相平衡系統。 7 工藝過程VOCs無組織排放控制要求 7.1 涉VOCs物料的化工生產過程 7.1.1 物料投加和卸放 a）液態VOCs物料應采用密閉管道輸送方式或采用高位槽（罐）、桶泵等給料方式密閉投加。無法密閉投加的，應在密閉空間內操作，或進行局部氣體收集，廢氣應排至VOCs廢氣收集處理系統。 b）粉狀、粒狀VOCs物料應采用氣力輸送方式或采用密閉固體投料器等給料方式密閉投加。無法密閉投加的，應在密閉空間內操作，或進行局部氣體收集，廢氣應排至除塵設施、VOCs廢氣收集處理系統。 c）VOCs物料卸（出、放）料過程應密閉，卸料廢氣應排至VOCs廢氣收集處理系統；無法密閉的，應采取局部氣體收集措施，廢氣應排至VOCs廢氣收集處理系統。 7.1.2 化學反應 a）反應設備進料置換廢氣、揮發排氣、反應尾氣等應排至VOCs廢氣收集處理系統。 b）在反應期間，反應設備的進料口、出料口、檢修口、攪拌口、觀察孔等開口（孔）在不操作時應保持密閉。 7.1.3 分離精制 a）離心、過濾單元操作應采用密閉式離心機、壓濾機等設備，離心、過濾廢氣應排至VOCs廢氣收集處理系統。未采用密閉設備的，應在密閉空間內操作，或進行局部氣體收集，廢氣應排至VOCs廢氣收集處理系統。 b）干燥單元操作應采用密閉干燥設備，干燥廢氣應排至VOCs廢氣收集處理系統。未采用密閉設備的，應在密閉空間內操作，或進行局部氣體收集，廢氣應排至VOCs廢氣收集處理系統。 c）吸收、洗滌、蒸餾/精餾、萃取、結晶等單元操作排放的廢氣，冷凝單元操作排放的不凝尾氣，吸附單元操作的脫附尾氣等應排至VOCs廢氣收集處理系統。 d）分離精制后的VOCs母液應密閉收集，母液儲槽（罐）產生的廢氣應排至VOCs廢氣收集處理系統。 7.1.4 真空系統 真空系統應采用干式真空泵，真空排氣應排至VOCs廢氣收集處理系統。若使用液環（水環）真空泵、水（水蒸氣）噴射真空泵等，工作介質的循環槽（罐）應密閉，真空排氣、循環槽（罐）排氣應排至VOCs廢氣收集處理系統。 7.1.5 配料加工和含VOCs產品的包裝 VOCs物料混合、攪拌、研磨、造粒、切片、壓塊等配料加工過程，以及含VOCs產品的包裝（灌裝、分裝）過程應采用密閉設備或在密閉空間內操作，廢氣應排至VOCs廢氣收集處理系統；無法密閉的，應采取局部氣體收集措施，廢氣應排至VOCs廢氣收集處理系統。 7.2 含VOCs產品的使用過程 7.2.1 VOCs質量占比大于等于10%的含VOCs產品，其使用過程應采用密閉設備或在密閉空間內操作，廢氣應排至VOCs廢氣收集處理系統；無法密閉的，應采取局部氣體收集措施，廢氣應排至VOCs廢氣收集處理系統。含VOCs產品的使用過程包括但不限于以下作業： a）調配（混合、攪拌等）； b）涂裝（噴涂、浸涂、淋涂、輥涂、刷涂、涂布等）； c）印刷（平版、凸版、凹版、孔版等）； d）粘結（涂膠、熱壓、復合、貼合等）； e）印染（染色、印花、定型等）； f）干燥（烘干、風干、晾干等）； g）清洗（浸洗、噴洗、淋洗、沖洗、擦洗等）。 7.2.2 有機聚合物產品用于制品生產的過程，在混合/混煉、塑煉/塑化/熔化、加工成型（擠出、注射、壓制、壓延、發泡、紡絲等）等作業中應采用密閉設備或在密閉空間內操作，廢氣應排至VOCs廢氣收集處理系統；無法密閉的，應采取局部氣體收集措施，廢氣應排至VOCs廢氣收集處理系統。