CN105565687A - Pulverized coal injection delivery system for lime kiln - Google Patents
Pulverized coal injection delivery system for lime kiln Download PDFInfo
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- CN105565687A CN105565687A CN201511009807.2A CN201511009807A CN105565687A CN 105565687 A CN105565687 A CN 105565687A CN 201511009807 A CN201511009807 A CN 201511009807A CN 105565687 A CN105565687 A CN 105565687A
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- pulverized coal
- coal dust
- delivery system
- tank
- coal
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2/00—Lime, magnesia or dolomite
- C04B2/10—Preheating, burning calcining or cooling
- C04B2/104—Ingredients added before or during the burning process
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
Abstract
The invention relates to a pulverized coal injection delivery system for lime kiln. The system includes a pulverized coal cabin, a blower fan and a pulverized coal distributor. The system is provided with an intermediate tank and an injection tank; the pulverized coal bin is connected with an intermediate tank through a gate valve; the intermediate tank is connected to an injection tank through a feed valve; the lower portion of the injection tank is provided with a pulverized coal discharge port; the pulverized coal discharge port is connected to a pulverized coal dispenser through a feed valve and a pulverized coal delivery pipe; the blower fan is connected with the pulverized coal delivery pipe; the pulverized powder delivery pipe is connected with the pulverized coal cabin through a powder return pipe; the injection tank is connected to an intermediate tank through a balance pipe; and the intermediate tank is connected to the pulverized coal cabin through an upper balance pipe. The system uses the compressed air blown by the blower fan as power for convey, improves the pulverized coal injection convey capacity and combustion efficiency of pulverized coal, optimizes the delivery process and reduces power consumption. The pulverized coal injection delivery system for lime kiln has the advantages of high transmission capacity, complete sealing, no dust, cleaness and green.
Description
Technical field
The invention belongs to technical field of chemical production equipment, relate to a kind of limestone kiln support equipment, be specifically related to a kind of limestone kiln breeze blowing delivery system.
Background technology
The calciners such as the limestone kiln used solid fuel need pulverized coal preparation and delivery system, coal dust is transported to burner and burns.The preparation of coal dust and delivery system generally include run coal bin, powder-making machine, Pulverized Coal Bin and coal powder conveyer etc., coal is ground into coal dust in powder-making machine, the coal dust ground is stored in Pulverized Coal Bin, with roots blower produce high pressure draft be carrier, by the coal dust blowout in Pulverized Coal Bin, guide to burner combustion by pipeline.
Because coal powder size is superfine, itself and air mixed are easy to blast, and in addition, also there is certain density CO in Pulverized Coal Bin, each of which increases the potential safety hazard of Pulverized Coal Bin blast.Usual use nitrogen as the shielding gas in Pulverized Coal Bin, and when pulverized coal conveying also with nitrogen for carry powder gas, like this, nitrogen will inevitably enter in roasting kiln together in company with coal dust.Due to the inertia of nitrogen, its oxygen will diluted in stove after entering roasting kiln, affects the Thorough combustion of coal dust, reduces the heat production efficiency of roasting kiln.
Summary of the invention
The invention provides a kind of limestone kiln breeze blowing delivery system, promote the winding-up transport capacity of coal dust, improve the efficiency of combustion of pulverized coal conveying, optimize conveying flow process, reduce power consumption.
Technical scheme of the present invention is: limestone kiln breeze blowing delivery system, comprises Pulverized Coal Bin, blower fan and pulverized coal distributor.System is provided with tundish and winding-up tank, and Pulverized Coal Bin is connected with tundish by push-pull valve, and tundish are connected with winding-up tank by feed valve.Winding-up tank bottom is provided with coal dust discharge port, coal dust discharge port is connected with pulverized coal distributor with coal dust transfer lime by feed valve, blower fan is connected with coal dust transfer line.System is provided with back powder pipeline, equalizing line and upper equalizing line, and coal dust transfer lime is connected with Pulverized Coal Bin by back powder pipeline, and winding-up tank is connected with tundish by equalizing line, and tundish are connected with Pulverized Coal Bin by upper equalizing line.
System is provided with fluidizing agent pipeline, and fluidizing agent pipeline is connected respectively to the bottom of Pulverized Coal Bin, tundish and winding-up tank.Fluidizing agent pipeline is connected with nitrogen header pipe, makes fluidizing agent with nitrogen.Pulverized coal distributor comprises distributor disk and dispensing branch.Dispensing branch is connected to the burner in limestone kiln, and limestone kiln comprises beam-type limekiln, sleeve kiln, two thorax kiln and annular to firing.Beam-type limekiln is provided with burning beam, upper suction bar, lower suction bar and cooling air inlet.Burning beam comprises beam body, and the bottom in beam body is provided with coal dust burner, and be provided with coal dust arm and combustion-supporting air channel in beam body, dispensing branch is connected to coal dust burner by coal dust arm.Beam is external is provided with gas fuel inlet, is provided with blast tube in beam body, and the both sides of beam body are provided with gas jet, and gas fuel inlet is connected with gas passage, and gas passage is connected with fuel burner nozzle.Sleeve kiln is provided with combustion chamber, and combustion chamber is provided with sleeve kiln coal dust burner, and dispensing branch is connected to the coal powder entrance of sleeve kiln coal dust burner.
Limestone kiln of the present invention breeze blowing delivery system is the corollary system in limestone kiln, effectively achieve large-scale modernization limestone kiln by this system and to be burnt by gas that to change into coal dust be that fuel is calcined, be conducive to the cost reducing lime product, expand fuel source, improve the handiness of operation.Limestone kiln breeze blowing delivery system is combined with tundish and tank of jetting by Pulverized Coal Bin, the compress wind bloated with blower fan is that power is carried, improve the winding-up transport capacity of coal dust and the efficiency of combustion of coal dust, optimize conveying flow process, reduce power consumption.Limestone kiln of the present invention breeze blowing delivery system transport capacity is large, fully-closed, without airborne dust, clean environment firendly.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of limestone kiln of the present invention breeze blowing delivery system;
Fig. 2 is pulverized coal distributor schematic diagram;
Fig. 3 is beam-type limekiln schematic diagram;
Fig. 4 is burning beam structural representation;
Fig. 5 is the A-A figure of Fig. 4;
Fig. 6 is sleeve kiln structural representation;
Fig. 7 is sleeve kiln coal dust nozzle structure schematic diagram.
Wherein:
1-back powder pipeline, 2-Pulverized Coal Bin, 3-push-pull valve, 4-equalizing line, 5-tundish, 6-feed valve, 7-fluidized wind pipeline, 8-upper equalizing line, 9-winding-up tank, 10-coal dust discharge port, 11-pulverized coal distributor, 12-distributor disk, 13-dispensing branch, 14-blower fan, 15-coal dust transfer lime, 16-valve, 17-burning beam, 18-blast tube, 19-coal dust arm, 20-coal dust burner, 21-thermal oil entrance, 22-combustion-supporting air channel, 23-gas jet, 24-beam-type limekiln, 25-upper suction bar, 26-lower suction bar, 27-feed valve, 28-gas fuel inlet, 29-combustion air entrance, 30-beam body, 31-sleeve kiln, 32-combustion chamber, 33-sleeve kiln coal dust burner, 34-coal powder entrance, 35-gas inlet, 36-burner mouth, 37-metering valve.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.Scope is not limited to embodiment, and those skilled in the art make any change and also belong to the scope of protection of the invention in the scope that claim limits.
Embodiment 1
As shown in Figure 1, comprise Pulverized Coal Bin 2, tundish 5, winding-up tank 9, blower fan and 4 pulverized coal distributors 11, blower fan is roots blower to limestone kiln of the present invention breeze blowing delivery system.Pulverized Coal Bin is connected with tundish by push-pull valve 3, and tundish are connected with winding-up tank 9 by feed valve 6.Winding-up tank bottom is provided with coal dust discharge port 10, coal dust discharge port is connected with pulverized coal distributor 11 with coal dust transfer lime 15 by feed valve 27, blower fan is connected with coal dust transfer line.System is provided with back powder pipeline 1, equalizing line 4 and upper equalizing line 8, and coal dust transfer lime is connected with Pulverized Coal Bin by back powder pipeline, and winding-up tank is connected with tundish by equalizing line, and tundish are connected with Pulverized Coal Bin by upper equalizing line 8.System is provided with fluidizing agent pipeline 7, and fluidizing agent pipeline is connected with nitrogen header pipe, makes fluidizing agent with nitrogen.The bottom of Pulverized Coal Bin, tundish and winding-up tank is respectively equipped with two circle fluidisation gas inlet, and fluidizing agent pipeline is connected respectively to the fluidisation gas inlet of Pulverized Coal Bin, tundish and winding-up tank.As shown in Figure 2, pulverized coal distributor comprises distributor disk 12 and 15 dispensing branch 13.Dispensing branch is connected to the burner of beam-type limekiln 24, and as shown in Figure 3, beam-type limekiln is provided with burning beam 17, upper suction bar 25, lower suction bar 26 and cooling air inlet.As shown in Figure 4, Figure 5, burning beam comprises beam body 30, coal dust arm 19, combustion-supporting air channel 22, blast tube 18 and gas jet 23.Beam is external is provided with gas fuel inlet, thermal oil entrance 21, and the both sides of beam body are provided with gas jet 23, and gas fuel inlet is connected with gas passage, and gas passage is connected with fuel burner nozzle.Dispensing branch 13 is connected to coal dust burner by coal dust arm.Winding-up tank is provided with Weighing mechanism, and coal dust transfer lime is provided with metering valve 37, and Weighing mechanism and metering valve are interlocked.
The coal dust prepared between coal car processed is transported to Pulverized Coal Bin, and coal dust enters tundish through push-pull valve, then enters winding-up tank through feed valve.Coal dust enters coal dust transfer line through metering valve 37 after the weighing device weights of winding-up tank, the distributor disk of pulverized coal distributor 11 is entered to each dispensing branch 13 under the drive of the conveying wind bloated at blower fan 14, again by the beam body of dispensing branch to beam-type limekiln, the coal dust arm 19 in beam body burns to coal dust burner 20.
Embodiment 2
Another embodiment of the present invention as shown in Figure 6, comprise winding-up delivery system and sleeve kiln 31, winding-up delivery system comprises Pulverized Coal Bin 2, tundish 5, winding-up tank 9, blower fan and 4 pulverized coal distributors 11, and sleeve kiln is provided with combustion chamber 32, and combustion chamber is provided with sleeve kiln coal dust burner 33.Shown in Fig. 7, sleeve kiln coal dust burner is provided with coal powder entrance 34, gas inlet 35 and burner mouth 36, and dispensing branch 13 is connected to the coal powder entrance of sleeve kiln coal dust burner.Other structure of the present embodiment is identical with embodiment 1 with operation.
Claims (8)
1. a limestone kiln breeze blowing delivery system, comprise Pulverized Coal Bin (2), blower fan (14) and pulverized coal distributor (11), it is characterized in that: described system is provided with tundish (5) and winding-up tank (9), described Pulverized Coal Bin is connected with tundish by push-pull valve (3), and described tundish are connected with winding-up tank (9) by feed valve (6); The bottom of described winding-up tank is provided with coal dust discharge port (10), coal dust discharge port is connected with pulverized coal distributor (11) with coal dust transfer lime (15) by feed valve (27), and described blower fan is connected with coal dust transfer line; Described system is provided with back powder pipeline (1), equalizing line (4) and upper equalizing line (8), coal dust transfer lime is connected with Pulverized Coal Bin by back powder pipeline, winding-up tank is connected with tundish by equalizing line, and tundish are connected with Pulverized Coal Bin by upper equalizing line (8).
2. limestone kiln according to claim 1 breeze blowing delivery system, is characterized in that: described system is provided with fluidizing agent pipeline (7), and described fluidizing agent pipeline is connected respectively to the bottom of Pulverized Coal Bin (2), tundish (5) and tank (9) of jetting.
3. limestone kiln according to claim 1 breeze blowing delivery system, is characterized in that: described pulverized coal distributor (11) comprises distributor disk (12) and dispensing branch (13).
4. limestone kiln according to claim 1 breeze blowing delivery system, is characterized in that: described dispensing branch is connected to limestone kiln burner, and described limestone kiln comprises beam-type limekiln (24), sleeve kiln (31), two thorax kiln and annular to firing.
5. limestone kiln according to claim 4 breeze blowing delivery system, is characterized in that: described beam-type limekiln (24) is provided with burning beam (17), upper suction bar (25), lower suction bar (26) and cooling air inlet.
6. limestone kiln according to claim 5 breeze blowing delivery system, it is characterized in that: described burning beam (17) comprises beam body (30), bottom in described beam body is provided with coal dust burner (20), be provided with coal dust arm (19) and combustion-supporting air channel (22) in beam body, described dispensing branch (13) is connected to coal dust burner by coal dust arm.
7. limestone kiln according to claim 6 breeze blowing delivery system, it is characterized in that: outside described beam body (30), be provided with gas fuel inlet (28), blast tube (18) is provided with in beam body, the both sides of beam body are provided with gas jet (23), gas fuel inlet is connected with gas passage, and gas passage is connected with fuel burner nozzle.
8. limestone kiln according to claim 4 breeze blowing delivery system, it is characterized in that: it is characterized in that: described sleeve kiln (31) is provided with combustion chamber (32), described combustion chamber is provided with sleeve kiln coal dust burner (33), and described dispensing branch (13) is connected to the coal powder entrance (34) of sleeve kiln coal dust burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511009807.2A CN105565687B (en) | 2015-12-30 | 2015-12-30 | A kind of limekiln breeze blowing induction system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511009807.2A CN105565687B (en) | 2015-12-30 | 2015-12-30 | A kind of limekiln breeze blowing induction system |
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| CN105565687A true CN105565687A (en) | 2016-05-11 |
| CN105565687B CN105565687B (en) | 2017-08-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201511009807.2A Active CN105565687B (en) | 2015-12-30 | 2015-12-30 | A kind of limekiln breeze blowing induction system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109053000A (en) * | 2018-10-17 | 2018-12-21 | 常熟市龙腾特种钢有限公司 | A kind of beam-type limekiln |
| CN109114584A (en) * | 2017-06-24 | 2019-01-01 | 宝钢工程技术集团有限公司 | The double thorax kiln coal injection devices of pneumatic type and its application method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001072446A (en) * | 1999-07-06 | 2001-03-21 | Yoshizawa Lime Industry | Production of quick lime.calcined dolomite in kiln |
| CN201339950Y (en) * | 2009-01-09 | 2009-11-04 | 宋军保 | Pulverized coal injection and supply system for industrial furnace |
| CN102557491A (en) * | 2012-03-19 | 2012-07-11 | 石家庄市新华工业炉有限公司 | Compound combustion beam for lime kiln |
| CN203229496U (en) * | 2013-02-18 | 2013-10-09 | 上海锅炉厂有限公司 | Milled coal drying and conveying device applicable to high-moisture-content coal |
| CN203963981U (en) * | 2014-07-08 | 2014-11-26 | 曾永健 | A kind of steam drying brown coal medium-speed milling pulverization system |
-
2015
- 2015-12-30 CN CN201511009807.2A patent/CN105565687B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001072446A (en) * | 1999-07-06 | 2001-03-21 | Yoshizawa Lime Industry | Production of quick lime.calcined dolomite in kiln |
| CN201339950Y (en) * | 2009-01-09 | 2009-11-04 | 宋军保 | Pulverized coal injection and supply system for industrial furnace |
| CN102557491A (en) * | 2012-03-19 | 2012-07-11 | 石家庄市新华工业炉有限公司 | Compound combustion beam for lime kiln |
| CN203229496U (en) * | 2013-02-18 | 2013-10-09 | 上海锅炉厂有限公司 | Milled coal drying and conveying device applicable to high-moisture-content coal |
| CN203963981U (en) * | 2014-07-08 | 2014-11-26 | 曾永健 | A kind of steam drying brown coal medium-speed milling pulverization system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109114584A (en) * | 2017-06-24 | 2019-01-01 | 宝钢工程技术集团有限公司 | The double thorax kiln coal injection devices of pneumatic type and its application method |
| CN109053000A (en) * | 2018-10-17 | 2018-12-21 | 常熟市龙腾特种钢有限公司 | A kind of beam-type limekiln |
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| Publication number | Publication date |
|---|---|
| CN105565687B (en) | 2017-08-01 |
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