JB/T 8693-2015 PDF English
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Large and medium scale air separation plants
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JB/T 8693-2015: Large and medium scale air separation plants---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/JBT8693-2015
JB
MECHANICAL INDUSTRY STANDARD
ICS 71.100.20
J 76
Filing No.. 51510-2015
Replacing JB/T 8693-1998
Large and medium scale air separation plants
Issued on. OCTOBER 10, 2015
Implemented on. MARCH 01, 2016
Issued by. Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword... 4
1 Scope... 6
2 Normative references... 6
3 Terms and definitions... 8
4 Product classification and model... 9
5 Technical requirements... 10
6 Exit-factory inspection of air separation plant... 25
7 On-site inspection of complete set of air separation plant... 25
8 Marking, packaging, transportation, storage... 31
Appendix A (Informative) Metering method for liquid yield flow via the storage
tank volume... 33
Appendix B (Informative) Calculation method of oxygen equivalent and
comprehensive liquid product yield... 37
1 Scope
This standard specifies the terms and definitions, product classification and
model, technical requirements, exit-factory inspection, on-site inspection,
marking, packaging, transportation, storage of large and medium scale air
separation plants (hereinafter referred to as air separation plants).
This standard is applicable to air separation plant, where the oxygen yield is
greater than or equal to 1000 m3/h and less than 60000 m3/h, AND the
cryogenic method is used to separate air, to produce oxygen, nitrogen, argon
products.
Extra-large air separation plant can be implemented, with reference to this
standard.
Note 1.Pressures, which are not specified in this standard, are gauge pressures.
However, if adding "(A)", it means absolute pressure.
Note 2.The production of oxygen, nitrogen, argon in this standard is the gas volume
under the standard state, that is, the gas volume under the state of 0 °C and 101.325
kPa (A), in cubic meters per hour (m3/h).
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) is applicable to this standard.
GB 150 (all parts) Pressure vessel
GB/T 151 Heat exchanger
GB/T 2624 (all parts) Measurement of fluid flow by means of pressure
differential devices inserted in circular cross-section conduits running full
GB/T 2888 Methods of noise measurement for fans blowers compressors
and roots blowers
GB 3096 Environmental quality standard for noise
GB/T 3863 Industrial oxygen
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/T 4842 Argon
3 Terms and definitions
The terms and definitions as defined in GB/T 10606, as well as the following
terms and definitions apply to this document.
3.1
The equivalent product A
The sum of the flow rate of the product A per unit time AND the flow rate of
other products after converted to reference product per unit time. It is
obtained by selecting the product A of a certain specification, which is
produced by the air separation plant, as the reference product, AND using
the principle of equivalent energy consumption, to convert other products
into the flow rate (mass flow or volume flow) of the reference product.
3.2
Energy consumption per unit of the equivalent oxygen
The ratio -- OF the total energy consumption, which is obtained by selecting
the oxygen product of a certain specification as the reference product, AND
using the principle of equivalent energy consumption to convert other
products, such as liquid oxygen, liquid nitrogen, liquid argon, nitrogen, etc.,
into the volume flow rate of the oxygen product of the said specification per
unit time -- TO the oxygen equivalent of the said specification.
4 Product classification and model
4.1 Products are divided into four categories, according to the basic process.
- External compression process. Air filtration and compression; compressed
air pre-cooling and purification; pressurized air expansion; feeding the
structured packing into tower; the gas product out of the cold box is
pressurized to the user's required pressure by the compressor, which is
referred to as process I;
4.2 The product model is in accordance with the requirements of JB/T 11006.
5 Technical requirements
5.1 Engineering conditions
5.1.1 General.
This standard specifies the general engineering conditions, which are required
in the design of air separation plant. When the values in Table 1 ~ Table 7 do
not conform to the contract technical agreement, it shall follow the contract
technical agreement. If the contract technical agreement does not clearly
stipulate, this standard shall prevail.
5.1.3 The environmental conditions are as specified in Table 2.
5.1.4 The cooling water is in accordance with Table 3.
5.1.5 The steam parameter series of the traction steam turbine unit shall be in
accordance with the requirements in Table 4.
5.1.6 The gas source of industrial instruments shall be in accordance with Table
5.
5.1.12 The seismic fortification intensity shall be stipulated in the agreement.
5.1.13 The power supply is alternating current. The voltage, phase, frequency
of the power supply shall meet the requirements of Table 7.The other relevant
technical conditions shall meet the requirements of GB/T 12325.The 690 V AC
power supply is suitable for high-power liquid pump motors. If the accident
power supply adopts DC 220 V, it must be separately stipulated in the contract
technical agreement.
5.2.5 The air separation plant should be selected in a clean atmosphere. It
should be arranged on the downwind side of the annual minimum frequency
wind direction of harmful gas and dust emission sources; meanwhile it shall
consider the impact of the expansion of surrounding enterprises on the safety
of the plant.
5.2.6 It shall consider the impact of the air separation plant on the residential
area, when the distance between them is small. It shall meet the requirements
of GB 12348 and GB 3096.
5.2.7 During the engineering design, the noise of the central control room shall
meet the requirements of GB/T 50087.
5.3 Product performance requirements
5.3.1 The basic performance parameters are as specified in Table 8.
5.4 Composition of air separation plant
5.4.1 General
Air separation plant usually consists of raw material air filter, raw air turbo-
compressor, air pre-cooling system, air purification system, air (nitrogen)
booster, booster turboexpander (refrigeration), fractionation tower system,
liquid storage and vaporization system, oxygen compressor, nitrogen
compressor, instrument control system, electrical control system, etc.
6 Exit-factory inspection of air separation plant
6.1 The matched pressure vessel must be inspected in accordance with TSG
R0004.Meanwhile it shall provide corresponding quality certification
documents.
6.2 Pressure piping and pipelines must be inspected, in accordance with TSG
D0001.Meanwhile it shall provide corresponding quality certification
documents.
6.4 All purchased and external accessories, such as motors, compressors,
electric control equipment, pumps, valves, instruments and other parts, must
have a certificate of conformity from the manufacturer, as well as flow charts,
general drawings, basic drawings, installation instructions, user's manual.
7 On-site inspection of complete set of air separation plant
7.1 Performance inspection conditions for complete sets of air
separation plant
7.2 Measuring instrument and accuracy or precision
The measuring instrument and its accuracy or precision shall be in accordance
with Table 10.
7.3 Determination of flow of product oxygen, nitrogen, liquid
(liquid oxygen, liquid nitrogen, liquid argon)
7.3.1 The measurement of flow rate shall be performed simultaneously with the
measurement of purity. Before measurement, all pipe joints shall be checked
for any leakage or blockage.
7.4 Determination of air flow
7.4.1 The air flow into the fractionation tower should be measured, on the air
pipe main, behind the molecular sieve adsorber and in front of the cold box.
7.4.2 When the atmospheric conditions do not match the design conditions, the
flow rate is converted according to formula (1).
7.5 Determination of product oxygen purity
7.5.1 The sampling point for analyzing oxygen purity is at the product oxygen
main pipe of the cold box.
7.5.2 The oxygen purity analysis shall be carried out, in accordance with the
provisions of GB/T 3863, OR the purity shall be determined by an analytical
instrument, that has been calibrated by standard gas.
7.6 Determination of product nitrogen purity
7.6.1 The sampling point for analyzing nitrogen purity is at the product nitrogen
main pipe of the cold box.
7.8 Determination of energy consumption of compression
7.8.1 Determination of compression energy consumption of motor-driven
compressor
The input active power of the motor is calculated according to formula (2).
Where.
7.12.2 The total number of meters is the sum of the number of measuring points,
on the control room dial and/or computer control, the number of local
instruments, the number of analytical instruments used in the analysis room.
8 Marking, packaging, transportation, storage
8.1 The complete set of air separation plant shall be provided with a plate in an
obvious location; the size shall meet the requirements of GB/T 13306.
8.2 The nameplate content of the complete air separation plant shall at least
include.
8.3 The exit-factory technical documents for complete sets of air separation
plant (including supporting units) shall include the following contents.
8.4 For packaging and transportation, refer to the provisions of GB/T 13384 and
JB/T 4711.
8.5 The storage requirements for air separation plant are as follows.
JB/T 8693-2015
JB
MECHANICAL INDUSTRY STANDARD
ICS 71.100.20
J 76
Filing No.. 51510-2015
Replacing JB/T 8693-1998
Large and medium scale air separation plants
Issued on. OCTOBER 10, 2015
Implemented on. MARCH 01, 2016
Issued by. Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword... 4
1 Scope... 6
2 Normative references... 6
3 Terms and definitions... 8
4 Product classification and model... 9
5 Technical requirements... 10
6 Exit-factory inspection of air separation plant... 25
7 On-site inspection of complete set of air separation plant... 25
8 Marking, packaging, transportation, storage... 31
Appendix A (Informative) Metering method for liquid yield flow via the storage
tank volume... 33
Appendix B (Informative) Calculation method of oxygen equivalent and
comprehensive liquid product yield... 37
1 Scope
This standard specifies the terms and definitions, product classification and
model, technical requirements, exit-factory inspection, on-site inspection,
marking, packaging, transportation, storage of large and medium scale air
separation plants (hereinafter referred to as air separation plants).
This standard is applicable to air separation plant, where the oxygen yield is
greater than or equal to 1000 m3/h and less than 60000 m3/h, AND the
cryogenic method is used to separate air, to produce oxygen, nitrogen, argon
products.
Extra-large air separation plant can be implemented, with reference to this
standard.
Note 1.Pressures, which are not specified in this standard, are gauge pressures.
However, if adding "(A)", it means absolute pressure.
Note 2.The production of oxygen, nitrogen, argon in this standard is the gas volume
under the standard state, that is, the gas volume under the state of 0 °C and 101.325
kPa (A), in cubic meters per hour (m3/h).
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) is applicable to this standard.
GB 150 (all parts) Pressure vessel
GB/T 151 Heat exchanger
GB/T 2624 (all parts) Measurement of fluid flow by means of pressure
differential devices inserted in circular cross-section conduits running full
GB/T 2888 Methods of noise measurement for fans blowers compressors
and roots blowers
GB 3096 Environmental quality standard for noise
GB/T 3863 Industrial oxygen
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/T 4842 Argon
3 Terms and definitions
The terms and definitions as defined in GB/T 10606, as well as the following
terms and definitions apply to this document.
3.1
The equivalent product A
The sum of the flow rate of the product A per unit time AND the flow rate of
other products after converted to reference product per unit time. It is
obtained by selecting the product A of a certain specification, which is
produced by the air separation plant, as the reference product, AND using
the principle of equivalent energy consumption, to convert other products
into the flow rate (mass flow or volume flow) of the reference product.
3.2
Energy consumption per unit of the equivalent oxygen
The ratio -- OF the total energy consumption, which is obtained by selecting
the oxygen product of a certain specification as the reference product, AND
using the principle of equivalent energy consumption to convert other
products, such as liquid oxygen, liquid nitrogen, liquid argon, nitrogen, etc.,
into the volume flow rate of the oxygen product of the said specification per
unit time -- TO the oxygen equivalent of the said specification.
4 Product classification and model
4.1 Products are divided into four categories, according to the basic process.
- External compression process. Air filtration and compression; compressed
air pre-cooling and purification; pressurized air expansion; feeding the
structured packing into tower; the gas product out of the cold box is
pressurized to the user's required pressure by the compressor, which is
referred to as process I;
4.2 The product model is in accordance with the requirements of JB/T 11006.
5 Technical requirements
5.1 Engineering conditions
5.1.1 General.
This standard specifies the general engineering conditions, which are required
in the design of air separation plant. When the values in Table 1 ~ Table 7 do
not conform to the contract technical agreement, it shall follow the contract
technical agreement. If the contract technical agreement does not clearly
stipulate, this standard shall prevail.
5.1.3 The environmental conditions are as specified in Table 2.
5.1.4 The cooling water is in accordance with Table 3.
5.1.5 The steam parameter series of the traction steam turbine unit shall be in
accordance with the requirements in Table 4.
5.1.6 The gas source of industrial instruments shall be in accordance with Table
5.
5.1.12 The seismic fortification intensity shall be stipulated in the agreement.
5.1.13 The power supply is alternating current. The voltage, phase, frequency
of the power supply shall meet the requirements of Table 7.The other relevant
technical conditions shall meet the requirements of GB/T 12325.The 690 V AC
power supply is suitable for high-power liquid pump motors. If the accident
power supply adopts DC 220 V, it must be separately stipulated in the contract
technical agreement.
5.2.5 The air separation plant should be selected in a clean atmosphere. It
should be arranged on the downwind side of the annual minimum frequency
wind direction of harmful gas and dust emission sources; meanwhile it shall
consider the impact of the expansion of surrounding enterprises on the safety
of the plant.
5.2.6 It shall consider the impact of the air separation plant on the residential
area, when the distance between them is small. It shall meet the requirements
of GB 12348 and GB 3096.
5.2.7 During the engineering design, the noise of the central control room shall
meet the requirements of GB/T 50087.
5.3 Product performance requirements
5.3.1 The basic performance parameters are as specified in Table 8.
5.4 Composition of air separation plant
5.4.1 General
Air separation plant usually consists of raw material air filter, raw air turbo-
compressor, air pre-cooling system, air purification system, air (nitrogen)
booster, booster turboexpander (refrigeration), fractionation tower system,
liquid storage and vaporization system, oxygen compressor, nitrogen
compressor, instrument control system, electrical control system, etc.
6 Exit-factory inspection of air separation plant
6.1 The matched pressure vessel must be inspected in accordance with TSG
R0004.Meanwhile it shall provide corresponding quality certification
documents.
6.2 Pressure piping and pipelines must be inspected, in accordance with TSG
D0001.Meanwhile it shall provide corresponding quality certification
documents.
6.4 All purchased and external accessories, such as motors, compressors,
electric control equipment, pumps, valves, instruments and other parts, must
have a certificate of conformity from the manufacturer, as well as flow charts,
general drawings, basic drawings, installation instructions, user's manual.
7 On-site inspection of complete set of air separation plant
7.1 Performance inspection conditions for complete sets of air
separation plant
7.2 Measuring instrument and accuracy or precision
The measuring instrument and its accuracy or precision shall be in accordance
with Table 10.
7.3 Determination of flow of product oxygen, nitrogen, liquid
(liquid oxygen, liquid nitrogen, liquid argon)
7.3.1 The measurement of flow rate shall be performed simultaneously with the
measurement of purity. Before measurement, all pipe joints shall be checked
for any leakage or blockage.
7.4 Determination of air flow
7.4.1 The air flow into the fractionation tower should be measured, on the air
pipe main, behind the molecular sieve adsorber and in front of the cold box.
7.4.2 When the atmospheric conditions do not match the design conditions, the
flow rate is converted according to formula (1).
7.5 Determination of product oxygen purity
7.5.1 The sampling point for analyzing oxygen purity is at the product oxygen
main pipe of the cold box.
7.5.2 The oxygen purity analysis shall be carried out, in accordance with the
provisions of GB/T 3863, OR the purity shall be determined by an analytical
instrument, that has been calibrated by standard gas.
7.6 Determination of product nitrogen purity
7.6.1 The sampling point for analyzing nitrogen purity is at the product nitrogen
main pipe of the cold box.
7.8 Determination of energy consumption of compression
7.8.1 Determination of compression energy consumption of motor-driven
compressor
The input active power of the motor is calculated according to formula (2).
Where.
7.12.2 The total number of meters is the sum of the number of measuring points,
on the control room dial and/or computer control, the number of local
instruments, the number of analytical instruments used in the analysis room.
8 Marking, packaging, transportation, storage
8.1 The complete set of air separation plant shall be provided with a plate in an
obvious location; the size shall meet the requirements of GB/T 13306.
8.2 The nameplate content of the complete air separation plant shall at least
include.
8.3 The exit-factory technical documents for complete sets of air separation
plant (including supporting units) shall include the following contents.
8.4 For packaging and transportation, refer to the provisions of GB/T 13384 and
JB/T 4711.
8.5 The storage requirements for air separation plant are as follows.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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