GB/T 51063-2014 PDF English
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| GB/T 51063-2014 | English | 850 |
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Technical code for large and medium-scale biogas engineering
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GB/T 51063-2014: Technical code for large and medium-scale biogas engineering---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT51063-2014
UDC GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
P GB/T 51063-2014
Technical code for large and medium-scale biogas
engineering
Issued on. DECEMBER 02, 2014
Implemented on. AUGUST 01, 2015
Issued by. Ministry of Housing and Urban-Rural Development of PRC;
General Administration of Quality Supervision, Inspection and
Quarantine of PRC.
Technical code for large and medium-scale biogas
engineering
Main drafting organization. Ministry of Housing and Urban-Rural Development of the
People's Republic of China
Approved by. Ministry of Housing and Urban-Rural Development of the People's
Republic of China
Date of implementation. August 1st, 2015
China Building Industry Press
2014 Beijing
Announcement of Ministry of Housing and Urban-Rural
Development of the People's Republic of China
No.672
Table of Contents
Foreword... 6
1 General provisions... 8
2 Terms and abbreviations... 9
2.1 Terms... 9
2.2 Abbreviations... 10
3 Basic requirements... 12
4 Biogas station... 14
4.1 Site selection and general layout... 14
4.2 Raw materials and pretreatment... 17
4.3 Anaerobic digestion process and equipments... 19
4.4 Biogas purification... 24
4.5 Biogas storage... 26
4.6 Pipeline accessories, pumps, boosters and metering devices... 28
4.7 Fire-fighting facilities, water supply and drainage system... 32
4.8 Electrical device and safety system... 33
4.9 Heating and ventilation... 35
5 Transportation and applications of biogas... 37
6 Construction installation and acceptance... 39
6.1 General requirements... 39
6.2 Structure and foundation construction... 39
6.3 Installation of steel anaerobic digester... 40
6.4 Biogas purification and installation of storage facilities... 44
6.5 Pipeline construction... 45
6.6 Mechanical equipment and electrical instrumentation installation... 46
6.7 Commissioning... 48
6.8 Completion and acceptance... 49
7 Operation and maintenance... 51
7.1 General requirements... 51
7.2 Plant facilities... 51
7.3 Pipes and accessories... 55
Appendix A The calculations and design of preprocessing pool design... 57
Appendix B The maximum volume of the double membrane gas cabinet and the
maximum pressure... 62
Appendix C The horizontal and vertical spacing between buried gas pipelines and
buildings, structures or adjacent pipelines... 63
Appendix D Explosion hazardous area classification and delineating... 65
Appendix E Biogas routine laboratory tests and the cycle of inspection... 68
Explanation of wording in this Code... 70
List of quoted standards... 71
1 General provisions
1.0.1 In order to standardize the design, construction, installation, acceptance, operation,
maintenance of large and medium-scale biogas engineering, AND to ensure project
quality and safe production, this Code is hereby formulated.
1.0.2 This Code applies to the design, construction and installation, acceptance,
operation and maintenance of the newly-built, expanded, rebuilt biogas engineering,
which uses anaerobic digestion technology to process the agricultural organic waste,
industrial high-concentration organic wastewater, industrial organic waste residue,
sludge, is mainly for gas supply, has a biogas output of not less than 500 m3/d.
1.0.3 Large and medium-sized biogas projects shall actively adopt new technologies,
new processes, new materials, new equipment, on the basis of constantly summarizing
practical experience in production and construction, so as to achieve stable operation,
reliable equipment, advanced technology, economic feasibility.
1.0.4 The design, installation, acceptance, operation and maintenance of large and
medium-sized biogas projects shall not only comply with this Code, but also comply
with the current relevant national standards.
2 Terms and abbreviations
2.1 Terms
2.1.1 Biogas
A combustible mixed gas, which is mainly composed of methane, has a low-level
calorific value not less than 17 MJ/m3 as produced by the digestion of organic matter,
under anaerobic conditions, by microorganisms.
2.1.2 Biogas station
A place which uses anaerobic digestion technology to produce, purity, store biogas.
2.2 Abbreviations
CSTR - Complete stirred tank reactor
USR - Upflow solid reactor
UASB - Upflow anaerobic sludge blanket reactor
IC - Internal circulation anaerobic reactor
EGSB - Expanded granular sludge blanket reactor
HCPF - High concentrations of plug-flow reactor
3 Basic requirements
3.0.1 The design of the biogas project shall meet the requirements of comprehensive
utilization, environmental protection, occupational hygiene.
3.0.2 The construction scale of the biogas project shall be comprehensively determined,
based on factors such as the source and nature of raw materials, user category and gas
consumption. It should comply with the following requirements.
3.0.3 The quality of biogas, which is used for civil use, power generation, purification
compression, shall meet the requirements in Table 3.0.3.
3.0.4 The biogas project shall be equipped with facilities to ensure gas supply safety;
the materials and equipment used shall meet the relevant provisions of the current
national standards.
3.0.7 Biogas used for civil use shall be odorized. The odorizing device and odorizing
agent shall meet the relevant provisions of the current industry standard "Technical
specification for city gas odorization" CJJ/T 148.
3.0.8 Biogas projects shall take measures to reduce noise, odor and other pollution; the
treatment of discharges shall comply with the relevant provisions of the current national
environmental protection standards.
4 Biogas station
4.1 Site selection and general layout
4.1.1 The site selection shall conform to the overall planning of urban and rural
construction. It shall meet the following requirements.
4.1.2 The overall layout of the station area shall be divided according to the production
area and production auxiliary area. It shall meet the following requirements.
4.1.3 The overall layout of the station area shall be reasonably designed, according to
the functions and technological requirements of various facilities in the station,
combined with terrain, wind direction and other factors. Meanwhile it shall meet the
following requirements.
4.1.4 Anaerobic digesters shall be arranged in groups; the distance between anaerobic
digesters and between anaerobic digesters and other facilities in the station shall meet
the requirements of maintenance and operation.
5 Transportation and applications of biogas
5.0.1 The biogas transmission and distribution pipeline network shall be based on
factors, such as gas consumption and distribution, construction and operation of biogas
users, after comparing multiple plans, to choose a technically economical, reasonable,
safe, reliable medium and low-pressure gas supply plan. The design shall be carried out,
to gradually form a ring-shaped gas supply pipeline network.
5.0.3 Medium-pressure gas supply should be equipped with a pressure regulating device;
the process design of the pressure regulating device shall comply with the relevant
provisions of the current national standard "Code for design of city gas engineering"
GB 50028.
5.0.8 The design of indoor biogas pipelines, biogas metering, gas consumption
equipment for civil centralized gas supply shall comply with the relevant provisions of
the current national standard "Code for design of city gas engineering" GB 50028.
5.0.9 The calorific value, water dew point, hydrogen sulfide concentration of the biogas,
which is used for power generation, shall comply with the provisions of clause 3.0.3 of
this Code. Other parameters such as temperature, pressure, pressure fluctuation, dust
content shall comply with the technical requirements of the selected power generator
sets.
6 Construction installation and acceptance
6.1 General requirements
6.1.1 For the biogas project, it shall prepare the construction program or construction
plan, according to design drawings, technical documents, equipment installation
drawings and other materials. When it is necessary to change the design or substitute
materials, it shall be implemented after obtaining the consent of the original design
organization.
6.2 Structure and foundation construction
6.2.1 The construction of structures shall comply with the relevant provisions in the
current national standard "Code for construction and acceptance of water and sewerage
structures" GB 50141.
6.2.7 The construction of equipment foundation shall meet the following requirements.
6.3 Installation of steel anaerobic digester
6.3.1 The installation preparation of the steel anaerobic digester shall meet the
following requirements.
6.3.3 The installation of steel plate assembled anaerobic digester shall meet the
following requirements.
6.5.6 The laying of biogas transmission and distribution pipelines and accessories shall
comply with the current industry standard "Code for construction and acceptance of
city and town gas distribution works" CJJ 33.
6.5.7 The construction of biogas leading pipe and indoor biogas pipeline shall comply
with the relevant provisions of the current industry standard "Code for construction and
quality acceptance of city indoor gas engineering" CJJ 94.
7 Operation and maintenance
7.1 General requirements
7.1.1 Biogas production and supply organization shall formulate corresponding
operating procedures, according to the structure, performance, use of the process
equipment system of the biogas station; establish and improve the emergency response
system for accidents.
7.1.6 It is not allowed to use open flame for operations, in the production area without
approval; when it is necessary to use open flame operations, safety protection measures
shall be taken, meanwhile operations shall be performed, under the supervision of
relevant personnel.
7.1.7 The pressure gauges, metering devices and other instruments and meters of the
pipelines and equipment, in the biogas station, shall be calibrated regularly.
7.2 Plant facilities
7.2.1 The scum, sundries, sand in structures such as grilles, grit chambers and regulating
tanks shall be cleaned regularly.
7.2.5 The operation and maintenance of the anaerobic digester shall comply with the
following requirements.
7.3.6 The operation and maintenance of the condenser shall comply with the following
requirements.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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