CN103234350A - Hot air supply system for belt type roasting machine - Google Patents

Hot air supply system for belt type roasting machine Download PDF

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Publication number
CN103234350A
CN103234350A CN2013101943520A CN201310194352A CN103234350A CN 103234350 A CN103234350 A CN 103234350A CN 2013101943520 A CN2013101943520 A CN 2013101943520A CN 201310194352 A CN201310194352 A CN 201310194352A CN 103234350 A CN103234350 A CN 103234350A
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China
Prior art keywords
belt type
roasting machine
type roasting
hot air
pulverized coal
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Pending
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CN2013101943520A
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Chinese (zh)
Inventor
吴增福
王忠英
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MCC North Dalian Engineering Technology Co Ltd
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MCC North Dalian Engineering Technology Co Ltd
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Priority to CN2013101943520A priority Critical patent/CN103234350A/en
Publication of CN103234350A publication Critical patent/CN103234350A/en
Pending legal-status Critical Current

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Abstract

The invention belongs to the technical field of belt type roasting machine pelletizing techniques, and particularly relates to a hot air supply system for a belt type roasting machine. The hot air supply system is characterized by comprising a pulverized coal bin, wherein a pneumatic pulverized coal transmission device and a dust collection device are arranged at the top of the pulverized coal bin; an anti-blocking safety protection device, a valve body and a pulverized coal metering scale are arranged at an outlet of the bottom of the pulverized coal bin; the pulverized coal metering scale is connected with a coal injection Roots blower and a combustion-supporting Roots blower; the coal injection Roots blower and the combustion-supporting Roots blower are respectively connected with a powdered coal combustor in a pulverized coal combustion chamber by connecting pipelines; the pulverized coal combustion chamber is connected with a hot air pipeline I and a hot air pipeline II respectively; the hot air pipeline I is arranged above an upper shield of a roasting section of the belt type roasting machine; the hot air pipeline II is arranged above an upper shield of a soaking section of the belt type roasting machine; and a temperature measuring device is arranged in the pulverized coal combustion chamber. The hot air supply system is simple in structure, reasonable in design, high in automation degree, and stable in system operation; the belt type roasting machine can use pulverized coal as a fuel; the temperature is easy to control; and the heat efficiency of the pulverized coal is high.

Description

Belt type roasting machine warm-air supply system
Technical field
The invention belongs to belt type roasting machine pelletizing process technical field, especially relate to a kind of belt type roasting machine warm-air supply system.
Background technology
Belt type roasting machine technology is a very ripe pelletizing production technology.Its whole technical process concentrate on a machine, the production efficiency height, thereby be suitable for extensive pelletizing production; Investment and the running cost of belt type roasting machine technology are relatively low, and its ball layer is static relatively, so needn't be too high to the requirement of green ball strength; Belt type roasting machine technology is taked modes such as direct backheat and blower fan backflow, has utilized the physics heat of cooling and torrefaction waste gas most possibly; Because belt type roasting machine technology is used cheap solid fuel, make it further to develop to " energy-saving ", in various pelletizing production methods, still keep most important status.But, belt type roasting machine, particularly also there is weak point in the warm-air supply system: 1) consumption of high temperature resistant special alloy steel is big, class is high.Under the condition of production domesticization at present, bigger difficulty is arranged, aspect quality, be difficult to especially guarantee; 2) in process of production, to the stability requirement height of raw material.3) quality of finished pellet has inhomogeneous phenomenon.Because pelletizing is in temperature-rise period, the bed of material differs greatly in the length of the following time of staying of maximum temperature of each section bonnet up and down, thereby can have influence on the final strength of finished ball nodulizing.In addition, temperature and the edge effect that more or less exists on chassis in the bonnet also can influence the quality of finished ball nodulizing.4) must use coal gas and the heavy oil of high heating value to make fuel.Because be subjected to producing condition restriction such as fuel and control production cost, belt type roasting machine does not obtain big development in China.
Summary of the invention
The objective of the invention is a kind of hot-blast stove that adopts combusting coal fines provides the belt type roasting machine warm-air supply system of hot blast to belt type roasting machine.
The objective of the invention is to realize by following technical proposals:
A kind of belt type roasting machine warm-air supply of the present invention system; comprise on the belt type roasting machine furnace zone on cover and the belt type roasting machine soaking zone and covering; it is characterized in that being provided with Pulverized Coal Bin in the side that described belt type roasting machine furnace zone covers and the belt type roasting machine soaking zone covers; the top of this Pulverized Coal Bin is provided with coal dust Pneumatic conveyer and dust arrester; described Pulverized Coal Bin outlet at bottom is provided with anti-putty safety guard; valve body and coal powder metering claim; claim to be connected with the coal powder injection roots blower with described coal powder metering; this coal powder injection roots blower one side is provided with combustion-supporting roots blower; described coal powder injection roots blower is connected by the indoor coal burner of connecting pipe and coal dust firing respectively with combustion-supporting roots blower; described pulverized coal combustor is connected with hot air duct I and hot air duct II respectively; described hot air duct I is arranged on the top of covering on the described belt type roasting machine furnace zone; described hot air duct II is arranged on cover top on the described belt type roasting machine soaking zone, the indoor temperature measuring equipment that is provided with of described coal dust firing.
Described dust arrester is sack cleaner.
Described valve body is manual push-pull valve.
Described hot air duct I and hot air duct II outside are provided with heat-insulation layer.
Advantage of the present invention:
(1) belt type roasting machine warm-air supply of the present invention system can use coal dust to act as a fuel, and coal dust is economical and practical, thermal efficiency height, sufficient combustion; Simultaneously, hot blast pipeline is on the way taked the insulation measure, makes the heat loss minimum; Be applicable to any place;
(2) the coal dust firing temperature of belt type roasting machine warm-air supply of the present invention system is easy to control, by the ratio of control coal dust firing amount and combustion air, regulates the hot blast temperature of hot-blast stove;
(3) belt type roasting machine warm-air supply of the present invention system all adopts Automatic Control, and by correlate meter detected parameters real-time monitoring, automaticity is higher in the system work process;
(4) belt type roasting machine warm-air supply of the present invention system, stable equipment operation, fault rate is low, and the life-span is long, overhauls convenient and swiftly, saves the production maintenance cost.
Description of drawings
Fig. 1 is structural representation of the present invention.
The specific embodiment
Further specify the specific embodiment of the present invention below in conjunction with accompanying drawing.
As shown in Figure 1; a kind of belt type roasting machine warm-air supply of the present invention system; comprise on the belt type roasting machine furnace zone on cover 10 and the belt type roasting machine soaking zone and cover 9; it is characterized in that being provided with Pulverized Coal Bin 3 in a side of described belt type roasting machine furnace zone cover 10 and belt type roasting machine soaking zone cover 9; the top of this Pulverized Coal Bin 3 is provided with coal dust Pneumatic conveyer 2 and dust arrester 1; described Pulverized Coal Bin 3 outlet at bottoms are provided with anti-putty safety guard 4; valve body 5 and coal powder metering claim 6; described coal powder metering claims 6 to be connected with coal powder injection roots blower 7; these coal powder injection roots blower 7 one sides are provided with combustion-supporting roots blower 8; described coal powder injection roots blower 7 and combustion-supporting roots blower 8 are connected with coal burner 15 in the pulverized coal combustor 14 by connecting pipe 16 respectively; described pulverized coal combustor 14 is connected with hot air duct I 11 and hot air duct II 12 respectively; described hot air duct I 11 is arranged on the top of cover 10 on the described belt type roasting machine furnace zone; described hot air duct II 12 is arranged on cover 9 tops on the described belt type roasting machine soaking zone, is provided with temperature measuring equipment 13 in the described pulverized coal combustor 14.
Described dust arrester 1 is sack cleaner.
Described valve body 5 is manual push-pull valve.
Described hot air duct I 11 and hot air duct II 12 outsides are provided with heat-insulation layer.
Coal dust is delivered to Pulverized Coal Bin 3 tops by coal dust Pneumatic conveyer 2, and the dust arrester 1 that the pressure release dedusting is used is installed at Pulverized Coal Bin 3 tops.Near the anti-putty safety guard of installing Pulverized Coal Bin 3 end openings 4 charges into nitrogen during work, not only can loose metal but also can dilute combustable gas concentrations in the Pulverized Coal Bin 3.Manual push-pull valve valve body 5 and coal powder metering that 3 times row's mouths of Pulverized Coal Bin are installed successively claim 6, control coal-supplying amount automatically by the system feedback temperature.Use coal powder injection roots blower 7 coal injections, simultaneously, use combustion-supporting roots blower 8 that combustion air is provided, coal dust and combustion air are delivered to the coal burner 15 that is installed on the pulverized coal combustor 14 respectively by connecting pipe 16.Pulverized coal combustor 14 is installed temperature measuring equipment 13, the hot blast temperature of FEEDBACK CONTROL pulverized coal combustor 14 in real time.Hot air duct I 11 and the hot air duct II 12 of hot blast by having heat-insulation layer delivered to respectively on the belt type roasting machine furnace zone and covered 9 on the cover 10 and belt type roasting machine soaking zone.The present invention is simple in structure, and is reasonable in design, and belt type roasting machine can use coal dust to act as a fuel, easy control of temperature, and the automaticity height, system is stable, and the life-span is long, coal dust thermal efficiency height.

Claims (4)

1. belt type roasting machine warm-air supply system; comprise on the belt type roasting machine furnace zone on cover and the belt type roasting machine soaking zone and covering; it is characterized in that being provided with Pulverized Coal Bin in the side that described belt type roasting machine furnace zone covers and the belt type roasting machine soaking zone covers; the top of this Pulverized Coal Bin is provided with coal dust Pneumatic conveyer and dust arrester; described Pulverized Coal Bin outlet at bottom is provided with anti-putty safety guard; valve body and coal powder metering claim; claim to be connected with the coal powder injection roots blower with described coal powder metering; this coal powder injection roots blower one side is provided with combustion-supporting roots blower; described coal powder injection roots blower is connected by the indoor coal burner of connecting pipe and coal dust firing respectively with combustion-supporting roots blower; described pulverized coal combustor is connected with hot air duct I and hot air duct II respectively; described hot air duct I is arranged on the top of covering on the described belt type roasting machine furnace zone; described hot air duct II is arranged on cover top on the described belt type roasting machine soaking zone, the indoor temperature measuring equipment that is provided with of described coal dust firing.
2. belt type roasting machine warm-air supply according to claim 1 system is characterized in that described dust arrester is sack cleaner.
3. belt type roasting machine warm-air supply according to claim 1 system is characterized in that described valve body is manual push-pull valve.
4. belt type roasting machine warm-air supply according to claim 1 system is characterized in that described hot air duct I and hot air duct II outside are provided with heat-insulation layer.
CN2013101943520A 2013-05-23 2013-05-23 Hot air supply system for belt type roasting machine Pending CN103234350A (en)

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CN2013101943520A CN103234350A (en) 2013-05-23 2013-05-23 Hot air supply system for belt type roasting machine

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103575096A (en) * 2013-11-25 2014-02-12 中冶北方(大连)工程技术有限公司 Pulverized coal pellet spraying and burning system
CN110484713A (en) * 2019-09-05 2019-11-22 首钢集团有限公司 A kind of method and device producing pellet
CN112813257A (en) * 2020-12-30 2021-05-18 安徽工业大学 Carbon-free sintering method for providing heat by adopting high air temperature
CN112831652A (en) * 2020-12-30 2021-05-25 安徽工业大学 Carbon-free sintering system adopting high air temperature to provide heat
CN113061717A (en) * 2021-03-29 2021-07-02 北京卡卢金热风炉技术有限公司 Roasting system and method for producing oxidized pellets

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1099421A (en) * 1994-07-04 1995-03-01 冶金工业部钢铁研究总院 Belt-type roasting device and method using coal powder
JPH08110170A (en) * 1994-10-12 1996-04-30 Sumitomo Metal Ind Ltd Exhaust gas processing device of sintering machine
JPH1151571A (en) * 1997-07-31 1999-02-26 Nippon Steel Corp Treatment method for sintered main collected dust
CN101476820A (en) * 2009-02-03 2009-07-08 株洲冶炼集团股份有限公司 Air feed system of sintering device
JP2013002724A (en) * 2011-06-16 2013-01-07 Jp Steel Plantech Co Waste heat recovery equipment, waste heat recovery method, and sintering machine system
CN203323556U (en) * 2013-05-23 2013-12-04 中冶北方(大连)工程技术有限公司 Hot-air feeding system of band type roasting machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1099421A (en) * 1994-07-04 1995-03-01 冶金工业部钢铁研究总院 Belt-type roasting device and method using coal powder
JPH08110170A (en) * 1994-10-12 1996-04-30 Sumitomo Metal Ind Ltd Exhaust gas processing device of sintering machine
JPH1151571A (en) * 1997-07-31 1999-02-26 Nippon Steel Corp Treatment method for sintered main collected dust
CN101476820A (en) * 2009-02-03 2009-07-08 株洲冶炼集团股份有限公司 Air feed system of sintering device
JP2013002724A (en) * 2011-06-16 2013-01-07 Jp Steel Plantech Co Waste heat recovery equipment, waste heat recovery method, and sintering machine system
CN203323556U (en) * 2013-05-23 2013-12-04 中冶北方(大连)工程技术有限公司 Hot-air feeding system of band type roasting machine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103575096A (en) * 2013-11-25 2014-02-12 中冶北方(大连)工程技术有限公司 Pulverized coal pellet spraying and burning system
CN110484713A (en) * 2019-09-05 2019-11-22 首钢集团有限公司 A kind of method and device producing pellet
CN110484713B (en) * 2019-09-05 2021-02-19 首钢集团有限公司 Method and device for producing pellet ore
CN112813257A (en) * 2020-12-30 2021-05-18 安徽工业大学 Carbon-free sintering method for providing heat by adopting high air temperature
CN112831652A (en) * 2020-12-30 2021-05-25 安徽工业大学 Carbon-free sintering system adopting high air temperature to provide heat
CN113061717A (en) * 2021-03-29 2021-07-02 北京卡卢金热风炉技术有限公司 Roasting system and method for producing oxidized pellets

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Application publication date: 20130807