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HJ 2012-2012: Technical specifications for bag filters of municipal solid waste incineration
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Technical specifications for bag filters of municipal solid waste incineration
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Basic data | Standard ID | HJ 2012-2012 (HJ2012-2012) | | Description (Translated English) | Technical specifications for bag filters of municipal solid waste incineration | | Sector / Industry | Environmental Protection Industry Standard | | Classification of Chinese Standard | Z68 | | Classification of International Standard | 13.030.40 | | Word Count Estimation | 18,199 | | Quoted Standard | GB 150; GB 2893; GB 2894; GB 4053; GB 4064; GB 5083; GB 8958; GB 12801; GB 18485; GB 50029; GB 50034; GB 50052; GB 50054; GB 50057; GB 50217; GB 50231; GB 50236; GBJ 16; GBZ 1; GBZ 2; GB/T 4200; GB/T 6719; GB/T 16157; HJ/T 284; HJ/T 324; HJ/T 325; HJ/T 32 | | Regulation (derived from) | Department of Environmental Protection Notice No. 21 of 2012; | | Issuing agency(ies) | Ministry of Ecology and Environment | | Summary | This standard specifies the garbage incinerator flue dust bag system design, construction, commissioning, commissioning and operation and maintenance and other technical requirements. This standard applies to garbage incinerator flue dust bag works, such | HJ 2012-2012: Technical specifications for bag filters of municipal solid waste incineration---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Technical specifications for bag filters of municipal solid waste incineration
National Environmental Protection Standard of the People's Republic
Technical specification for garbage incineration bag type dust removal engineering
Published on.2012-03-19
2012-06-01 Implementation
Ministry of Environmental Protection released
Content
Foreword..III
1 Scope 1
2 Normative references 1
3 Terms and Definitions..2
4 pollutants and pollution load..2
5 General requirements 3
5.1 General Provisions 3
5.2 Dust removal system composition. 4
5.3 General layout. 4
6 Process Design 4
6.1 General requirements 4
6.2 System Design 4
7 Main process equipment and materials.5
7.1 Bag type dust collector design and selection..5
7.2 Bag filter material, filter bag and filter bag frame.7
7.3 Bag type dust collector cleaning device.7
8 Detection and Process Control 8
8.1 Detection..8
8.2 Control..9
9 Major auxiliary projects.9
9.1 Power supply and distribution.9
9.2 Compressed air supply system 10
10 Labor Safety and Occupational Health 11
11 Construction and acceptance.11
11.1 Dust removal system installation 11
11.2 Dust removal system commissioning 13
11.3 Dust collector leak detection and pre-coating ash 14
11.4 Project Acceptance and Environmental Acceptance 15
12 Operation and maintenance.16
12.1 General Provisions. 16
12.2 Start of dust removal system..16
12.3 Dust removal system operation 17
12.4 Dust removal system shutdown operation.17
12.5 Inspection and maintenance of dust removal system after shutdown..18
Appendix A ..19
Foreword
To implement the Environmental Protection Law of the People's Republic of China, the Law of the People's Republic of China on Prevention and Control of Atmospheric Pollution, and
Law of the People's Republic of China on the Prevention and Control of Environmental Pollution by Solid Wastes and the Standards for Pollution Control of Domestic Waste Incineration, Specification
Design, construction, operation and maintenance management of bag dust removal system for domestic waste incinerator, prevention and control of domestic waste incineration
This standard is formulated for smoke pollution, environmental protection and human health.
This standard specifies the design, construction, operation, management and other technologies of the baghouse dust removal system for domestic waste incinerators.
Claim.
This standard is the first release.
This standard was formulated by the Science and Technology Standards Department of the Ministry of Environmental Protection.
This standard is mainly drafted by. Sinosteel Tiancheng Environmental Protection Technology Co., Ltd.
This standard was approved by the Ministry of Environmental Protection on March 19,.2012.
This standard has been implemented since June 1,.2012.
This standard is explained by the Ministry of Environmental Protection.
Technical specification for garbage incineration bag type dust removal engineering
1 Scope of application
This standard specifies the design, construction, commissioning, acceptance and acceptance of the flue gas bag type dust removal system for domestic waste incinerators.
Technical requirements for operation and maintenance.
This standard is applicable to the dust bag type dust removal project of domestic waste incinerator, which can be used as the environmental impact assessment of such projects.
Price, feasibility study, design, construction, installation engineering acceptance, environmental protection acceptance and operation management, etc.
Technical basis. Other solid waste incinerator flue gas bag type dust removal works can be implemented.
2 Normative references
The contents of this standard refer to the terms in the following documents. Valid versions of undated references
Applicable to this standard.
GB 150 steel pressure vessel
GB 2893 security color
GB 2894 safety signs and guidelines for their use
GB 4053 Fixed Steel Ladder and Platform Safety Requirements
GB 4064 Safety Design Guidelines for Electrical Equipment
GB 5083 General safety and hygiene design of production equipment
GB 8958 Safety Regulations for Hazardous Oxygen Operation
General rules for safety and health requirements of GB 12801 production process
GB 18485 Domestic garbage incineration pollution control standard
GB 50029 compressed air station design specification
GB 50034 Architectural Lighting Design Standard
GB 50052 design specification for power distribution system
GB 50054 Low Voltage Distribution Design Specification
GB 50057 lightning protection design code for buildings
GB 50217 Power Engineering Cable Design Specification
General specification for construction and acceptance of GB 50231 mechanical equipment installation engineering
GB 50236 Field equipment, industrial pipeline welding engineering construction and acceptance specifications
GB J 16 Building Design Fire Code
GBZ 1 industrial enterprise design hygiene standard
GBZ 2 Industrial site harmful factors occupational exposure limit
GB/T 4200 high temperature operation classification
Technical requirements for GB/T 6719 bag filter
GB/T 16157 Determination of particulate matter in fixed pollution source exhaust gas and sampling method of gaseous pollutants
HJ/T 284 environmental protection product technical requirements electromagnetic pulse valve for bag filter
HJ/T 324 Environmental Protection Products Technical Requirements Bag Filters
HJ/T 325 environmental protection product technical requirements bag filter bag frame
HJ/T 327 environmental protection product technical requirements bag filter bag
JB/T 8471 bag filter installation technical requirements and acceptance specifications
Regulations on Environmental Protection Management of Construction Projects (Order No. 253 of the State Council [1998])
Measures for the Administration of Environmental Protection Acceptance for Completion of Construction Projects (formerly State Environmental Protection Administration [2001] Order No. 13)
3 Terms and definitions
The following terms and definitions apply to this standard.
3.1 Pre-coating pre-coating
Before the bag filter is put into operation, a certain amount of alkaline dust such as slaked lime powder is preset on the surface of the filter bag.
3.2 Fluorescent Leak Detection
Refers to the process of using the phosphor and the violet light to detect the leak point of the bag filter.
3.3 Deacidification deacidification
It refers to the removal of acid gases such as hydrogen chloride, hydrogen fluoride and sulfur oxides in the flue gas.
4 Contaminants and pollution loads
4.1 The main function of the bag dust removal system is to capture particulate matter in the flue gas. The design of the dust removal project should be mastered
The smoke inlet parameters and types, quantities and composition of the pollutants, including. the amount of smoke (working conditions and standard conditions),
Flue gas pressure and fluctuation range, flue gas temperature and fluctuation range (highest temperature of flue gas, minimum temperature of flue gas and normal
Operating temperature), acid dew point temperature, moisture content, flue gas dust concentration, and hydrogen chloride, hydrogen fluoride, sulfur oxidation
The concentration of matter, nitrogen oxides, oxygen, and the like. The inlet flue gas parameters based on the design of the precipitator are detailed in Appendix A.
4.2 The pollutant load of incineration flue gas can be determined by process calculation, testing or analogy.
4.3 Before the flue gas enters the dust collector, it should be deacidified first. The acid gas concentration after deacidification should meet the requirements of GB 18485.
Requirements.
4.4 Dust removal engineering design should be based on the removal process of other pollutant components in the flue gas of the incinerator.
4.5 The calculation of the amount of flue gas treated by the dust collector should consider temperature regulation, humidification, deacidification, activated carbon and other adsorbent sprays.
Changes in the amount of smoke caused by the influx should also take into account changes in the amount of smoke caused by the incinerator's overload operation.
4.6 Dust collector treatment of flue gas volume with working condition flow meter, if it is the flow under standard condition, it should be converted according to formula (1)
For working condition flow.
1 PT
TPQQ = .(1)
In the formula.
Q0--the flow rate of flue gas under standard conditions, Nm3/h;
P0--standard atmospheric pressure, 101.325kPa;
T0--value 273.15K;
Q1--fluid gas flow, m3/h;
P1--fluid working pressure, Pa;
T1--flue working temperature, k.
5 General requirements
5.1 General provisions
5.1.1 The design, construction and operation of the dust removal system shall meet the relevant national, local laws, regulations, technical standards and
The provisions of the emission standards.
5.1.2 The dust removal project shall be designed, constructed and operated simultaneously with the main body of the incineration.
5.1.3 Dust removal system and equipment operation, maintenance and overhaul shall not affect the normal and stable operation of the incinerator.
5.1.4 The dust emission limit after dust removal should meet the requirements of GB 18485.
5.1.5 Exhaust gas, waste water, waste residue, noise and other processes generated during the construction, operation and maintenance of the dust removal system
The control and discharge of pollutants shall comply with the relevant provisions of national environmental protection laws, regulations and standards, and prevent
Secondary pollution.
5.1.6 Dust collected by the dust removal system and the replacement filter bag are hazardous wastes, and their treatment and disposal should be in accordance with the national phase.
Regulations and standards.
5.2 Dust removal system
5.2.1 The dust removal system configuration and function should be based on furnace type, incineration amount, furnace condition, garbage composition, auxiliary fuel composition,
The specific conditions of the pre-contaminant removal process, flue gas working conditions, meteorological conditions, operation and maintenance management are designed.
5.2.2 Dust removal systems generally include. bag filters, flue and valves, pre-ashing devices, ash discharge and ash loading
Installation, insulation and heat tracing devices, compressed air supply systems, inspection and process control systems, power distribution systems, etc.
5.3 General layout
5.3.1 The relative position of the main equipment of the dust removal project and the arrangement of the main pipelines shall comply with the overall plan of the incineration plant.
Requirements for the general layout of the incineration plant.
5.3.2 Dust removal engineering design should consider the laying of underground pipelines in the incineration plant, water, electricity, gas, steam interface and other factors.
5.3.3 Dust removal works should have sufficient access passages, installation space and transport passages.
5.3.4 The dust collector and its supporting equipment should be arranged indoors.
6 Process design
6.1 General requirements
6.1.1 A waste incineration plant consisting of multiple incinerators shall be equipped with a separate baghouse for each waste incinerator.
System.
6.1.2 Bag type dust removal system is suitable for dry and semi-dry flue gas purification process, and the dust collector should be arranged in the deacidification device.
after that.
6.1.3 The parameters such as air volume and resistance of the dust removal system shall be determined according to the maximum working condition.
6.1.4 The operating temperature of the precipitator shall be designed according to the flue gas temperature after the deacidification process, generally ≥ 145 ° C, and
It should not be higher than the maximum temperature limit for continuous use of the filter material. The operating temperature of the precipitator should be higher than the acid dew point temperature of 20 ° C
on.
6.1.5 Selection and selection of dust filter bags, anti-corrosion coatings, paints, structural materials, accessories, components, etc.
The maximum operating temperature and the minimum operating temperature should be considered together.
6.1.6 Externally disposed dust collectors shall be strengthened with measures such as heat preservation, heat tracing, wind protection, snow prevention and waterproofing.
6.2 System Design
6.2.1 The bag filter should be pulsed and cleaned.
6.2.2 The filter speed of the bag filter should be based on the physical and chemical properties of the flue gas and dust, the dust concentration at the inlet of the dust collector and
The characteristics of the filter material are determined to be ≤0.9m/min.
6.2.3 The dust collector should be operated within the resistance range of 1300Pa to.2000Pa.
6.2.4 Non-metallic compensators shall be installed in the inlet and outlet flue of the dust collector.
6.2.5 Dust removal system flue wind speed should be designed from 12m/s to 16m/s.
6.2.6 The setting of the flue test holes before and after the precipitator shall comply with the provisions of GB/T 16157.
6.2.7 The ash conveying system should adopt the mechanical ash conveying method.
6.2.8 The ash discharge and ash conveying equipment should be tight to avoid dust leakage; continuous working mode should be adopted to avoid ash bucket accumulation.
gray.
6.2.9 Dust hopper, ash discharge and ash conveying equipment should prevent dust moisture absorption and compaction, and electricity or steam should be used as heat.
Source of heat tracing device.
6.2.10 Dust collectors, flue pipes and steam pipes shall be insulated and externally decorated, and the thickness of the insulation layer shall be not less than 100 mm.
And to ensure that the external temperature is not higher than 60 ° C.
6.2.11 The necessary lighting, ladders, platforms, etc. shall be provided for the operation, maintenance and hole-measuring parts of the dust removal system and equipment.
railing. The position of the hole should be close to the power socket.
6.2.12 Lifting device should be installed at the top of the dust collector. The lifting weight is not less than the maximum weight of the service parts.
7 Main process equipment and materials
7.1 Design and selection of bag filter
7.1.1 The filter area of the bag filter is calculated according to formula (2).
QS
= (2)
In the formula.
S--filtration area, m2;
Q--the maximum working condition of flue gas, m3/h;
V--filtration speed, m/min.
7.1.2 The dust collector should be provided with several independent filtering chambers, the number of which should not be less than 4. Each filter chamber enters,
The switch should be equipped with a switching valve. The filter chamber can be arranged in a single row or in a double row, depending on the number of chambers and the total level
The layout requirements are determined.
7.1.3 The dust collector should be cleaned by online cleaning; if offline cleaning is used, the filter area of the dust collector and the filtering wind speed
And the determination of the running resistance should consider the effect of the reduction of the filtration area when the cleaning chamber is closed.
7.1.4 The dust collector should be able to isolate any filter chamber for inspection and maintenance without stopping the incinerator.
7.1.5 Switching valves should be reliable, flexible and rigorous, and the air leakage rate should be less than 1%. The valve plate should have good rigidity.
No deformation, no jamming. It should have automatic and manual operation, valve position identification and flow direction indication.
7.1.6 The air leakage rate of the dust collector should be ≤ 2%.
7.1.7 The inside of the dust collector body should be smooth and flat, and the inner side of the corner of the box board should be made into an arc shape to avoid the box memory.
In a place that is heavily dusty.
7.1.8 The structure of the dust collector should be such that the filter bag can be easily replaced.
7.1.9 The dust collector shall be provided with a flow distribution device to distribute the dusty airflow and prevent it from scouring the filter bag.
7.1.10 Dust collector ash bucket shall be provided with level gauge, arching device, access door, manual flapper valve and ash discharge valve.
7.1.11 The angle between the inclined wall of the ash bucket and the horizontal plane shall not be less than 65°. The inner side of the intersection of the adjacent walls of the ash bucket shall be made
Arc shape. The size of the ash discharge ash should be ≥400mm×400mm.
7.1.12 The structure, support and foundation design of the dust collector body shall take into account dead load, live load, maintenance load and seismic load.
Etc. and design according to the dangerous combination. Wind filters and snow loads should also be considered for dust collectors placed outdoors.
7.1.13 The compressive strength of the dust collector box structure shall be designed according to the process requirements, and its value shall not be lower than the nameplate of the induced draft fan.
1.2 times the total pressure.
7.1.14 When designing the steel structure of the precipitator, the frame is considered at normal temperature, and the body of the precipitator is considered at 300 °C.
7.1.15 Non-metallic insulation materials shall be added to the joints of the dust collector body and structural members such as brackets and platforms.
7.1.16 The partition between the filter chambers of the precipitator shall be insulated.
7.1.17 The upper case, the middle case, the ash hopper and the inner surface of the flue should be shot blasted (sand) for derusting and derusting.
It should be no less than Sa2 21 grade and coated with anti-corrosion materials. The temperature resistance of anti-corrosion materials should be higher than the maximum operation of the precipitator.
temperature.
7.1.18 The manhole door and the access door shall be insulated.
7.1.19 The ladder, platform and railing of the dust collector shall comply with the provisions of GB 4053. Ladders, platforms and railings should be provided
Skirting board.
7.1.20 The flower board of the dust collector shall be smooth and smooth, and there shall be no defects such as deflection or unevenness. Flower plate flatness
The difference is no more than 2/1000 of its length. The deviation between the center of the plate hole and the processing reference line should be ≤1.0mm, and the adjacent flower
The center position deviation of the plate hole is less than 0.5 mm. The flower plate aperture deviation is 0 to 0.2 mm. The thickness of the flower board should be ≥6mm.
7.2 Bag filter, filter bag and filter bag frame
7.2.1 Filter media for dust collectors shall comply with the provisions of GB/T 6719 and HJ/T 324.
7.2.2 High temperature and corrosion resistant filter materials such as PTFE should be selected according to the temperature, composition and chemical corrosivity of the flue gas.
Glass fiber and so on.
7.2.3 Filter bags for dust collectors shall comply with the provisions of GB/T 6719 and HJ/T 327.
7.2.4 Under normal conditions of filter bag, the damage rate of filter bag should be ≤5% within 2 years of natural life.
7.2.5 The filter bag frame for the dust collector shall comply with the requirements of HJ/T 325.
7.2.6 The filter bag frame shall be made of high temperature resistant and corrosion resistant materials according to the temperature, composition and chemical corrosiveness of the flue gas.
Work, or carry out high temperature, corrosion resistant surface treatment.
7.2.7 The filter bag frame shall be made of special welding equipment with sufficient strength and rigidity. The solder joints shall be firm and flat.
Slip, no cracks, pits and burrs, no de-soldering and no-lead welding.
7.2.8 When the filter bag frame has a multi-section structure, the interface part must not cause wear on the filter bag, and the interface type should be convenient.
Dismantle and install.
7.2.9 The cooperation between the filter bag and the flower bag hole should be strict. The filter bag and the filter bag frame should have a suitable gap. Filter bag and filter
The bag frame should be mass-produced before the flower board, filter bag and frame are pre-assembled.
7.3 Bag type dust collector cleaning device
7.3.1 The dust collector cleaning device shall include components such as pulse valve, air bag and blow pipe.
7.3.2 The technical requirements, test methods, inspection rules, packaging, marking, storage and transportation of the pulse valve shall be implemented.
HJ/T 284 related regulations.
7.3.3 The selection of the pulse valve should be based on the diameter, length, quantity, shape of the filter bag and the amount of air to be blown.
determine.
7.3.4 Submerged pulse valve should be installed horizontally, and its output port should be concentric with the valve body, and should not be offset or skewed. Output
The mouth should be parallel to the seat.
7.3.5 When the compressed air quality and the supply pressure meet the requirements of the pulse valve technology, the diaphragm is in normal service life.
The life should be greater than 5 years.
7.3.6 The blow pipe shall have a reliable positioning and fixing device for easy installation and disassembly.
7.3.7 The design, manufacture, inspection and acceptance of air bags shall comply with the provisions of GB 150.
7.3.8 A drain valve shall be provided at the bottom of the air bag.
7.3.9 After the air bag is manufactured and qualified, the internal welding slag and other debris shall be removed and the pulse valve shall be installed in place.
The blowing test was performed one by one to confirm that the blowing was normal.
7.3.10 When the air bag and the blow pipe are assembled with the upper case, the blowing pipe should be strictly parallel with the flower plate and the nozzle should be
The center line coincides with the center line of the flower plate hole, and the position deviation should be less than 2 mm.
7.3.11 The cleaning device, the upper box and the flower board should be manufactured in the factory and then shipped out. It should be sealed before shipment from the factory.
Block all the holes in the air bag to prevent debris from entering. For pulse valves and solenoid valves, there should be protection against rain and collision.
8 Detection and process control
8.1 Testing
8.1.1 Contents and requirements to be tested by the dust removal system
8.1.1.1 Smoke detector concentration detection, display and over-limit alarm at the outlet of the dust collector.
8.1.1.2 Dust detector inlet and outlet differential pressure detection, and display and over-limit alarm.
8.1.1.3 Flue gas inlet and outlet smoke temperature detection, and display and over-limit alarm.
8.1.1.4 Air source pressure detection, display and over-limit alarm.
8.1.1.5 Gray bucket level detection, display and over-limit alarm.
8.1.1.6 ash bucket temperature detection, display and over-limit alarm.
8.1.2 Contents and requirements for selective detection of dust removal system
8.1.2.1 Flue gas flow detection and display.
8.1.2.2 Dust collector outlet pressure detection, display and over-limit alarm.
8.1.2.3 Detection, display and over-limit alarm of the main gaseous pollutants in the export flue gas.
8.1.2.4 Debris pulse valve fault detection, display and alarm.
8.1.2.5 Cleaning cycle and interval display.
8.1.3 The inlet and outlet headers of the dust collector shall be provided with differential pressure transmitters or pressure transmitters respectively.
8.1.4 Each filter chamber should be equipped with a differential pressure detection device.
8.1.5 A pressure transmitter should be provided after the pressure reducing valve of the compressed air line.
8.1.6 The temperature measurement point of the dust collector shall be set at the straight pipe section of the inlet and outlet of the dust collector, and at least there shall be at least 2 or more.
Measuring point. The dust ash hopper heating temperature measuring point should be placed outside the ash wall.
8.1.7 Each hopper should be equipped with a high level switch and a level switch protection.
8.1.8 The dust removal system and its main parameters should be concentrated on one screen, and the update time of the running parameters is not more than 1
second.
8.1.9 Primary components located in dusty flue shall be protected against wear. Pipe pressure measuring hole should have anti-blocking measures
Shi.
8.1.10 Testing instruments and meters shall be regularly verified and calibrated in accordance with relevant national or industry standards.
8.2 Control
8.2.1 The automatic control design of the dust r...
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