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GB 16543-2008: Safety regulations for explosion prevention and protection on bituminous coal injection system into blast furnace
Status: Valid GB 16543: Evolution and historical versions
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Safety regulations for explosion prevention and protection on bituminous coal injection system into blast furnace
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GB 16543-2008
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| GB 16543-1996 | English | 359 |
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Safety regulations for the explosion precautions of bituminous coal injection into blast furnace
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PDF similar to GB 16543-2008
Basic data | Standard ID | GB 16543-2008 (GB16543-2008) | | Description (Translated English) | Safety regulations for explosion prevention and protection on bituminous coal injection system into blast furnace | | Sector / Industry | National Standard | | Classification of Chinese Standard | C67 | | Classification of International Standard | 13.230 | | Word Count Estimation | 11,118 | | Date of Issue | 2008-04-22 | | Date of Implementation | 2008-11-01 | | Older Standard (superseded by this standard) | GB 16543-1996 | | Quoted Standard | GB/T 15605; GB 50016-2006; GB 50058-1992; Quality Supervision, Inspection and Quarantine Pressure Vessel Safety Technology Supervision | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 6 of 2008 (total 119) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This Chinese standard specifies the ironworks blast furnace system bituminous coal dust explosion prevention and protection measures for the basic requirements. This standard applies to ironworks blast furnace bituminous and bituminous and bituminous mix blowing system construction, expansion and renovation project design, construction and acceptance, as well as operation, maintenance, repair and management. Bituminous coal injection system for implementation. | GB 16543-2008: Safety regulations for explosion prevention and protection on bituminous coal injection system into blast furnace
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Safety regulations for explosion prevention and protection on bituminous coal injection system into blast furnace
ICS 13.230
C67
National Standards of People's Republic of China
Replacing GB 16543-1996
Bituminous coal injection into blast-proof safety rules
Posted 2008-04-22
2008-11-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
In addition to this standard 4.11,5.1.1,5.1.2,5.1.11,5.4.8,5.1.14, the rest are mandatory provisions.
This standard replaces GB 16543-1996 "bituminous coal injection into blast-proof safety regulations."
This standard compared with GB 16543-1996, the main differences are as follows.
--- Modify the original standard non-standard format (Chapter 2, the heading "reference standard" to "normative references"; Chapter 3, title
"Define" to "Terms and Definitions");
--- Added "multi-pipe Injection Technology", "mixed coal", "inert gas", "coal storage and transportation system" and "vent pipe" and other terms and
definition;
--- Increased safety overhaul responsible (see 4.1);
--- Increasing the design, production process, risk factors should be controlled [see 4.3a), l), m), n)];
--- Bituminous coal injection into the blast furnace design department made more detailed and specific requirements (see 4.6);
--- Detailed the safety training of bituminous coal injection system of blast furnace operator (see 4.9);
--- Added "mixed coal injection" and "bituminous coal injection plasmid" security requirements (see 4.10,4.11);
--- Added bituminous coal blast furnace engineering test before the safety inspection requirements (see 4.12);
--- Increase in the development of emergency rescue plan requirements (see 4.13);
--- Changed to coal, pulverized coal injection pipe flow rate within the requirements (see 5.3.4);
--- Increased requirements for coal storage system plus spray device (see 5.6.7);
--- Increases for coal storage, when the mill on fire safety measures (see 7.5.7,7.5.8).
The standard Chinese and Steel Group, Wuhan Research Institute of safety and environmental protection put forward.
This standard by the National Standardization Technical Committee produced dust explosion safety Technical Committee (TC288/SC5) centralized.
This standard is drafted by. China Steel Group, Wuhan Research Institute of safety and environmental protection.
Participated in the drafting of this standard. Huatian Engineering Technology Co., Ltd., Anshan Iron and Steel (Group) Company, Wuhan Iron and Steel (Group) Corporation,
State Metallurgical Equipment Co., Ltd. Nanjing.
The main drafters of this standard. Li Xiaofei, Zhao Dan force, Tang Qinghua, Lin Shunqing, Han Zhongli, Zhubing An, Du Gang, Zhang Guihua, Hu Tao, Chen Yi,
Zhu Chunmei.
This standard was first released in September 1996.
Bituminous coal injection into blast-proof safety rules
1 Scope
This standard specifies the ironworks blast furnace in bituminous coal injection coal dust explosion prevention and protection measures basic requirements.
This standard applies to new ironworks blast furnace injection of bituminous coal and anthracite and bituminous mix injection systems, expansion and renovation project
Design, construction and inspection, as well as operation, maintenance, repair and management. Anthracite coal injection system for implementation.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 15605 Dust Explosion Relief Guide
GB 50016-2006 architectural design code for fire protection
GB 50058-1992 explosion and fire hazard electrical installation design specifications
Safety Technology Supervision Administration of Quality Supervision, Inspection and Quarantine of the pressure vessel
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
Dry ash-free basis volatile content of more than 10% of the aggregate can be suspended in a stream of coal particles (pulverized coal for short).
3.2
From the raw coal into the coal storage and transportation after the ironworks, coal drying, coal preparation, coal transportation, coal injected into the blast furnace throughout the production process
process.
3.3
From the raw coal warehouse, furnace and air supply system will begin to grind dried coal pulverized coal warehouse made up and the collection and storage
System (the milling system).
3.4
From the milling system of pulverized coal bin after bin bag system pump start to collect powder feeder injection system before until (the powder transport system).
3.5
From the beginning to the injection tank gun until the pulverized coal with carrying medium injected into the blast furnace system (injection system).
3.6
Milling system as both inerting gas has a temperature of drying and carrying coal.
3.7
Lose powder, injection system used for carrying coal gas.
3.8
For temporarily storing coal at atmospheric pressure vessel.
3.9
Injection pressure in the system for at atmospheric pressure from accepting quantitative pulverized coal warehouse and under pressure will put the blowing tank
container.
3.10
Working pressure is higher than the pressure of the hot blast furnace pulverized coal injection for pressure vessels.
3.11
Means gas, powder and mixed for output.
3.12
The inner container pulverized coal fluidized devices.
3.13
Injection tank outlet provided only one (or two) injection tube, the end of the injection tube has a long distributor injection process.
3.14
Each valve opening is placed to prevent the system temperature and pressure, oxygen, accumulated powder and hot air flow backward position.
3.15
Direct injection tank with the same number of air equal branch pipe connected to the injection process.
3.16
The different types of coal (such as anthracite and bituminous) proper matching and mixed.
3.17
Usually refers to the diameter 0.2mm ~ 2mm between the coal particles.
3.18
Not combustion gases, such as nitrogen, carbon dioxide and other gases.
3.19
The transport of coal from the coal yard to transport coal warehouse equipment, including systems coal yard and coal storage thereof.
3.20
High temperature discharged by the vent port, high-pressure combustion and unburned tube was directed to security in the region.
4 General
4.1 Design of bituminous coal injection into the blast furnace, construction, production and maintenance of the first person in charge, should be familiar with the function of the system and leakage, fire, explosion
Fried risk and within its mandate to ensure the safe operation of the system is responsible.
4.2 pulverized coal injection system should have the following features.
a) size and layout to meet the requirements of the blast furnace or blast furnace group.
b) capable of processing coal into coal, and according to the design of continuous flow pulverized coal delivered to the coal warehouse, injection tank, furnace.
c) Long-term continuous normal operation, and unexpected emergency stop to reduce to a minimum.
d) requirements for monitoring with safety requirements, control equipment and devices, the system can guarantee the normal operation and safety repeatedly start or stop.
4.3 design, production process, should control the following risk factors.
a) coal coal yard, coal storage tank within the coal storage coal spontaneous combustion to enter the combustion of coal pulverizer.
b) raw coal feed poor or interrupted, resulting in the system overheat.
c) the occurrence of pulverized coal spontaneous combustion systems.
--- Pulverized coal vessels, piping memory dead;
--- Trip with a load of coal mill;
--- Furnace supply air temperature is too high;
--- Air leakage into the charging equipment or inerting gas pipeline;
--- Hot air or gas reflux into the coal bin.
d) When some grated raw coal release combustible gases, formed more explosive hybrid mix of equipment and pipelines. Some gas may be formed
Radical can promote spontaneous combustion of pulverized coal.
e) there are significant differences with the production and design of coal coal.
Fire f) pulverized coal handling system may cause an explosion or fire may induce an explosion.
g) personnel to enter may have suffocated in the inert gas piping and equipment.
h) untrained workers or sub-standard training, the equipment is not in place or improper maintenance.
i) air pressurized pulverized coal equipment explosive stronger, spontaneous combustion cycle shorter.
j) coal lance oxygen supply system is not reliable safety interlock.
k) coal injection oxygen oxygen pipe network within the oxygen-coal lance have oil and impurities.
l) spray pressure below the blast furnace blowing hot air pressure.
m) system equipment, pipelines and steel structure is not fully reliable grounding, or grounding resistance is too large.
n) the production process air pressure is lower than the injection tank pressure.
4.4 Design of the person in charge of pulverized coal injection system response function and fire and explosion prevention measures system configuration and technical responsibilities.
4.5 Construction of the person in charge of pulverized coal injection system shall be designed to organize the construction quality of the project does not meet the design requirements without consequences and caused
The consequences of the design unit responsible for changes made to the construction.
4.6 design units and personnel should have the process design design qualification certificate issued by the relevant state departments. PCI system design department should mention
For detailed design specification or the safety of operating instructions, which should include indicators of the quality and safety requirements for pulverized coal injection.
4.7 Design of pulverized coal injection system shall be subject to relevant departments for approval, approver for fire and explosion safety systems designed to bear the responsibility for approval.
4.8 new construction, reconstruction or expansion of pulverized coal injection system design and construction The Parties shall comply with these Rules about fire or explosion
coordination.
4.9 pairs of pulverized coal injection system all operators should carry out manufacturing operations and fire and explosion prevention training, assessment, certification, certificates, negligence remember
System recorded. Pulverized coal injection system for all operations personnel specially trained fire and explosion times of the year should not be less than 16h.
New workers before entering production jobs pulverized coal injection system, fire and explosion of knowledge should receive specialized training, after passing the examination before appointment
jobs.
From the pulverized coal injection system to work more than three months re-appointment of staff, in advance and make the appropriate fire and explosion specialized training, and
After passing the examination before induction.
Foreign visit or study personnel should receive the necessary fire and explosion safety education, and should be free guided.
4.10 mixed bituminous coal injection should take the same safety precautions blowing.
4.11 bituminous coal plasmid injection can be set with reference to bituminous coal injection safety measures.
4.12 before the test blast furnace bituminous coal project, shall be approved by the relevant state departments (local fire department) safety inspection, the fire prevention department of the system
Acceptance of responsibility for the explosion negative.
4.13 pulverized coal injection system should develop appropriate emergency rescue plan.
5 Design
5.1 General provisions
5.1.1 milling system should be used only to set up a wind turbine and a bag powder collecting the full vacuum milling process. Injection system should adopt a single line
Injection Technology. Should adopt the direct injection of convergence and milling system should not be located therebetween lose powder systems.
5.1.2 should use low leakage pulverizers, air-tight and efficient coal feeder powder collecting equipment and accessories.
5.1.3 coal storage, warehouse-style pumps, coal storage tank, injection tank and the inner wall of the tank and other equipment powder collecting hopper walls, piping, etc. should be smooth powder falling, cutting cone
Wall and the horizontal angle of not less than 70 ° or inerting gas flow gasifier.
5.1.4 Design of warehouse-style pumps, coal storage tank, injection tank, air tank, sub air bag and other pressure vessels, manufacture and installation shall comply with the National Quality Supervision and Inspection
Inspection and Quarantine issued the "Pressure Vessel Safety Technology Supervision."
5.1.5 collect dust bag should be made of antistatic bag.
5.1.6 coal belt conveyor should be set on the former warehouse facilities coal iron and metal detectors.
5.1.7 supply of pulverized coal injection system for a variety of compressed gases shall be subject to de-oiling and drying treatment.
5.1.8 does not have a reliable mechanical ventilation non-open-coal preparation plant, the area shall be 10 GB 50058-1992 predetermined electrical
Security design; one of the following conditions who can Area 11 electrical safety design.
--- Coal preparation plant for the open architecture;
--- Coal preparation plant is semi-open architecture, capable of fully natural ventilation;
--- Coal preparation plant equipped with reliable mechanical ventilation.
Power System 5.1.9 shall be two separate power supply design.
5.1.10 All equipment, containers, pipes should be fortified static grounding, use the wire jumper between the flanges, and anti-static design checking.
5.1.11 should set up a mobile or stationary vacuum cleaning unit, do not use compressed air to clean the surface of plant and equipment.
5.1.12 shape and surface coal storage should be in favor of the coal stream discharge, not easy to accumulate coal. Cutting cone wall and the horizontal angle of not less than 65 °; when
When using non-circular cross-section, two adjacent walls intersecting line and the horizontal angle of not less than 60 °, and the wall and the horizontal angle of not less than 65 °; for lignite
And large viscous or flammable bituminous coal, adjacent walls intersecting line and the horizontal angle of not less than 65 °, and the wall and the horizontal angle of not less than 70 °.
Adjacent to the inside wall angle should be circular shape.
5.1.13 should be set against the cold mill inlet valve, drawing air or gas exhaust fan outlet, etc.. When it is open when the suction port, should suck
Air intake is placed outside, clearly marked, and to treat gas emission port. Closed conduit should be used to draw the main outlet exhaust gas discharged.
5.1.14 mill inlet temperature should be above 50 ℃ lower than the lowest ignition design coal, mill outlet temperature should be higher than after the mill closed set powder
Preparation of the lowest temperature lower than 20 ℃, dew point higher than the outlet more than 10 ℃, not less than 60 ℃, not higher than for lignite 90 ℃, for bituminous coal
Not higher than 120 ℃.
5.1.15 Except for carbon monoxide content of the system can, but should be strengthened bunker bag and temperature monitoring. 1m ~ 5m away from the corner should be set at
Thermocouple, the insertion depth from the silo wall is not less than 1m, thermocouples shall be provided with a protective structure to avoid breakage. Adjacent horizontal and vertical spacing of the measuring point is not
It should be more than 4m.
5.2 Plant
5.2.1 shall be specified in GB 50016-2006 B fire danger building design.
5.2.2 should be set fire water pipeline system, the plant should be set up around the passage of fire engines, major fire hazard and should be set straight firehouse alarm
facility.
5.2.3 should be well ventilated, floor and inner wall should be flat and smooth (paint or tile adhesive, etc.), and set flush cleaning and drainage facilities. Polluted water
It must be carried out only after purification efflux. We should try to avoid the site may accumulate powder. Difficult to avoid the site should be easy to clean.
5.3 Pipeline
5.3.1 pulverized coal pipeline flange connection should be reduced, the inner wall should be smooth.
5.3.2 milling piping should avoid accumulation of dead coal, and the horizontal angle of not less than 45 °. When arranged in a horizontal pipe must
, The rated load conditions the design flow rate should be not less than 25m/s.
5.3.3 pulverized coal mill outlet conduit after the minimum load condition design flow rate should be not less than 15m/s.
5.3.4 coal, pulverized coal injection in the pipeline flow rate should meet the design parameters.
5.4 Inerting
5.4.1 milling system should adopt inert gas as the drying medium, mill entrance negative pressure system oxygen content of less than or equal to 8%, the end of the
Oxygen content of less than or equal to 12% of mouth, pulverized coal warehouse oxygen content of less than or equal to 12%.
5.4.2 using compressed air as a lose powder and blowing the carrying medium, in emergency situations should be able to turn nitrogen immediately.
5.4.3 pulverizing system of coal storage and injection system shall be provided with a continuous nitrogen inerting devices.
Pressurized fluidized medium 5.4.4 and lose powder, injection system warehouse-style pumps, coal storage tanks, pressure vessels and other injection tank should be nitrogen or other inert
Gas.
5.4.5 warehouse-style pumps, coal storage tank, injection tank, coal storage and other equipment or devices shall be provided with emergency turning air piping, valves, preferably with the union,
And interchangeable with nitrogen pipeline.
5.4.6 bag powder collecting device and PCI coal storage system shall be provided with means nitrogen.
5.4.7 nitrogen tank and distribution of nitrogen gas bag should be installed outdoors. When coal injection plant for the (semi) open, nitrogen tank and a nitrogen gas distribution package allows
Xu set up in the plant, and as far as possible be arranged in a well-ventilated place.
5.4.8 coal storage should be in slightly positive or slightly negative, continuous inerting with nitrogen, the gas can be replaced.
5.5 Explosion Venting
5.5.1 In addition to the pressure vessel, bend all pulverized coal vessels, piping connected to the ends of the container and the pipe shall be provided with sufficient area to vent
Boreholes, toward should not endanger personnel and other equipment. When you need to set vent pipe, vent pipe length should not exceed the diameter of the catheter
10 times.
5.5.2 container, venting should be GB equipment, pipeline and plant/T 15605 design.
5.5.3 When the explosion condition occurs, the tank should be able to withstand the explosion pressure.
5.6 Explosion, fire and explosion suppression
5.6.1 injection tank and piping should be able to blow and emergency cut off.
5.6.2 lose powder, gas (air or nitrogen) blowing pipeline system shall check valve.
5.6.3 process equipment and piping design and configuration, under the conditions required to ensure the production, should minimize the number of containers, shrink straight pipe
Diameter, reducing the length of the pipe, reducing the number of bends, eliminating partial accumulated powder, pulverized coal concentration increase within the system.
5.6.4 milling system gas burners, coal bunker mill, powder collecting bag, pulverizing system and injection system should be set up emergency nitrogen system.
5.6.5 should be located within the factory steam or water mist fire extinguishing system fire extinguishing system, prohibiting the use of water jet fighting methods. Pulverized container should be provided in
Carbon dioxide or phosphate extinguishing devices or systems.
5.6.6 All electrical room should be set up fire-fighting equipment or fire extinguishing systems.
5.6.7 coal storage systems should be added Sprinklers.
5.7 alarm monitoring and safety interlock
5.7.1 mill entrance, close the bag and the internal powder inlet, coal storage, warehouse-style pumps, coal storage tank, injection tank, etc. should be set up to monitor the upper limit temperature
Means. And other key parts of the mill outlet should be setting upper and lower dual temperature monitoring devices and alarm devices.
5.7.2 coal storage, coal storage material level should be set high and low stock level monitoring device, the alarm limit is reached.
5.7.3 milling system should set a fixed concentration of carbon monoxide and oxygen content online monitoring equipment, should reach the alarm value alarm and automatically nitrogen,
Reaches the upper limit should be automatically shut down.
5.7.4 respond to the injection tank pressure, the mixer outlet pressure and the pressure difference between the hot air blast safety interlock control.
5.7.5 respond to gas injection pressure and injection tank pressure difference between the safety interlock control.
5.7.6 oxygen-coal lance oxygen supply system should have automatic protection switching or nitrogen.
5.7.7 Front oxygen manifolds shall be provided protection.
5.7.8 pulverized coal injection system for all delivery systems and pneumatic valves should be able to switch to a safe position in an accident off.
Non-metallic pipe should be located on the front of the gun blast 5.7.9 coal pipe in the event of tempering can be blown immediately.
5.7.10 on coal blast furnace tube before blowing device shall measurement points and, when the pressure of the blast furnace blast pressure difference is below the safety value can
Enough to immediately start blowing and blowing device, to prevent the occurrence of tempering.
5.7.11 activity area within the plant personnel should have oxygen and carbon monoxide alarms, to prevent carbon monoxide poisoning and suffocation nitrogen.
Construction and commissioning 6
6.1 Construction
6.1.1 The contractor shall develop construction fire and explosion safety rules in accordance with the design and field conditions.
6.1.2 construction site near the bituminous coal injection equipment has been put into the system, you should set up a temporary fire and explosion separated and adequate fire fighting equipment,
Construction workers should have hot work permit and construction work permit. When equipment involved, as prescribed by the 7.4.1,8.6,8.7 after the first stop construction.
6.2 Commissioning
6.2.1 should be building, construction and design units to establish a leading group test (or command), responsible for developing test acceptance criteria and explosion safety
Details, check the performance of production equipment and explosion-proof facilities and test leadership work.
6.2.2 The test should turn stand-alone test, empty load linkage test and load linkage test, a test to be qualified after a previous test
After. During the test should be used anthracite.
6.2.3 load linkage test, the interlock system, alarm facilities should be sensitive, venting, explosion suppression facilities should be reliable, explosion-proof lighting, communications equipment, fire
Equipment should be complete and intact and have emergency response plans.
7 Operation
7.1 General requirements
7.1.1 interlock system, alarm facilities should be sensitive.
7.1.2 Blocking, explosion, explosion suppression, explosion venting facility should be reliable.
7.1.3 fire equipment should be intact and effective.
7.1.4 monitoring instruments should be sound and accurate.
7.1.5 scene, there should be no fire and combustibles inside the equipment and piping; rotating parts and transmission parts should be no obstruction.
7.1.6 anthracite coal should be available within the warehouse.
7.2 Start
7.2.1 milling system according to the following reverse order start. bag powder collecting device cleaning device; Mill; Exhaust Fan powder collecting device later.
7.2.2 mill outlet temperature should not exceed 80 ℃, should be put in a larger proportion of anthracite or anthracite coal mixed until Pulverized System
Bituminous or bituminous coal switched to a larger proportion of blended coals to normal. The oxygen content of exhaust emission system during normal start should not exceed 12%, non-positive
When you restart after regular stop should not exceed 8%.
7.2.3 lose pow...
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