CN104089296A - Temperature-controllable rotating pulverized coal combustion system integrating powder making, storage and supply - Google Patents
Temperature-controllable rotating pulverized coal combustion system integrating powder making, storage and supply Download PDFInfo
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- CN104089296A CN104089296A CN201410320096.XA CN201410320096A CN104089296A CN 104089296 A CN104089296 A CN 104089296A CN 201410320096 A CN201410320096 A CN 201410320096A CN 104089296 A CN104089296 A CN 104089296A
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Abstract
The invention provides a temperature-controllable rotating pulverized coal combustion system integrating powder making, storage and supply. The system comprises a powder making machine, a powder storage tank and a combustor. A small powder collector and a big powder collector are arranged on the upper portion of the powder storage tank. A powder feeder is arranged at a discharge port of the powder storage tank. A second fan is arranged below the powder feeder. A coal feeder is arranged at a feed hopper of the powder making machine. A first fan is arranged on the lower portion of the powder making machine. Wind paths are arranged between the powder making machine and the big powder collector, between the first fan and the small powder collector, between the first fan and the second fan and between the second fan and the combustor. The temperature-controllable rotating pulverized coal combustion system integrating powder making, storage and supply is controlled by an electric control system in a centralized mode, achieves integrated operation of powder making, powder storage, powder supply, air supply and combustion, and provides a powerful guarantee for application to an industrial furnace and asphalt particle mixing equipment; the whole process is carried out in a closed pipeline, so that the system is clean, free of pollution, easy to operate and convenient to use, and the furnace temperature is controllable.
Description
Technical field
The present invention relates to pulverized coal combustion system, be specifically related to a kind of powder process storage powder that integrates for the rotary-type pulverized coal combustion system of powder and controllable temperature.
Background technology
China Shi Ge big coal country, coal resources are cheap abundant, very extensive in the application of all trades and professions.How can utilize on high-efficiency environment friendly ground, be the content that each industry need to be furtherd investigate.At present, the like product using on industrial furnace and asphalt grain mixing equipment mainly contains two types: a class is to burn during coal dust that the lump coal that with coal-grinding and powder-spraying machine, granularity is less than to 25mm is worn into 90 orders left and right directly sprays into burner.This class advantage is that coal-grinding dusts and is integrated, on-the-spot powder process, burning, and whole system is simple in structure, is convenient to install.Shortcoming is that coal-grinding and powder-spraying machine output is limited, two of needs, three Coal-disintegrating machines confession powder even just while needing the large burner of calorific value to use, on burner, coal feed point is difficult for arranging, and energy consumption is large, wind-force is wayward, because rotating speed is fast, inner consumable accessory wearing and tearing are too fast, maintenance is frequent, and output is limited, to 5 tons, consumption coal per hour, does not just rise and has gone.Along with the continuous upgrading of burner, this powder mode that supplies has not provided sufficient coal dust, can not meet the demand in market.In addition, owing to can not storing up powder, once coal-grinding and powder-spraying machine is out of order, whole system all will quit work to fix a breakdown, and impact is produced.Another kind of is to grind into 100 order coal dusts with the lump coal that large-scale powder manufacturing apparatus is less than 25mm by granularity, collect, be transported to storage powder tank place, with the lifting means such as elevator (when carrier bag is coaling powder) or pumping equipment (when purchase tank car is coaling powder), be transported in storage powder tank again, and then with powder feeder unit, air-supply arrangement is blown into coal dust in burner and burns.This class advantage is that output raising is unrestricted, for powder air feed, easily concentrates and adjusts, and flame quality is high.Shortcoming is that powder process is separated with storage powder, and coal dust belongs to inflammable thing, dangerous in the process of transportation and storage, not environmental protection.Storage powder tank has been done little not reach instructions for use, done greatly, and safety measure is difficult to accomplish.At present; to make storage tank with stainless steel abroad; welding requirements is extremely tight; internal weld seams requires to have not a particle of burr; inner blanketing with inert gas, object is to prevent coal dust explosion, also needs to install additional in addition the safeguard measures such as safety valve; construction costs is very high, and the storage powder tank of 100 tons is with regard to price million people people's coin nearly.At home, some user is for cost-saving, and the common storage tank that often uses general steel plate to make substitutes, the existing report that occurs security incident.
Summary of the invention
The problem existing for prior art, technical problem to be solved by this invention be how to make to use on various industrial furnaces and asphalt grain mixing equipment pulverized coal combustion system can integrate powder process, storage powder, for powder, air feed, burning, thereby realize energy-conservation, safety, High-efficient Production.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of powder process storage powder that integrates is for the rotary-type pulverized coal combustion system of powder and controllable temperature, comprise flour mill, storage powder tank and burner, establish respectively little powder collector and large powder collector on the top of described storage powder tank; Feed opening place at storage powder tank establishes machine supplying powder, under machine supplying powder, be connected with three-way pipe two, three-way pipe two one end are connected with burner by wind path six, and three-way pipe two other ends are connected with blower fan two, on blower fan two, establish valve one and valve two, two, valve one and valve are connected with three-way pipe one; Feed hopper place at described flour mill establishes coaling machine, and coal bunker is established on coaling machine top; Flour mill is connected with large powder collector by wind path one, in flour mill bottom, establishes blower fan one, and blower fan one is connected with large powder collector by wind path three, and blower fan one is also connected with little powder collector by wind path two; Two of blower fan one and wind paths are connected with three-way pipe three, and the other end of three-way pipe three is connected with three-way pipe one by wind path five, at the mouth of pipe place of three-way pipe three, establishes respectively valve; Little powder collector is connected with cleaner by wind path four; Level-sensing device up and down in the igniter of the analytical engine of coaling machine, machine supplying powder, flour mill, flour mill upper end, blower fan one, blower fan two, burner, burner, storage powder tank is by electric-control system centralized Control.
The burner hearth of described burner is rotation burner hearth.
The hood shell-side face of described flour mill is established feed hopper, has established grinding roller and the bull ring of the effect of rolling in flour mill.
Described coaling machine is batcher, belt feeder or screw feeding machine.
The door capable of being opened of controlling lower coal amount is established in described upper coal bunker bottom.
The present invention adopts the designed powder process that integrates of technique scheme to store up powder for the rotary-type pulverized coal combustion system of powder air feed and controllable temperature, the upper coal of collection, powder process, storage powder, supply powder, air feed, burn in the pulverized coal combustion system of one, whole process completes continuously in closed conduit and equipment.The present invention has a flour mill lump coal that is less than 25mm to be ground into the coal dust (this flour mill also can be adjusted coal powder size as required at any time) of 100 about orders at the scene, by wind power system, coal dust is stored in the storage powder tank that transition uses and is stored.Owing to being scene powder process at any time, this storage powder tank does not need very large, and coal dust is with mill with use, and the coal dust amount of storage is few, and the storage time is short, and safety requirements is far below the requirement of great Chu powder tank, and safety coefficient increases greatly.And every day the storage powder in can emptying storage powder tank before shutting down, that has avoided that coal dust long term storage causes gets damp, and hardens to stop up the phenomenon of storage powder tank feed opening.Whole coal-grinding storage powder process is carried out in the system of a sealing, environmental protection, convenience.Under storage powder tank, have for powder air supply device, by adjusting coaling machine rotating speed, can adjust at any time upper coal amount, upper coal is convenient, to control furnace temperature.Upper air quantity can be adjusted by valve, to obtain desirable flame.Burner hearth is rotation burner hearth, and burning is reliable, is efficiently difficult for slagging scorification.Analytical engine on flour mill can carry out sorting to powder, and powder process granularity is adjustable, and it is convenient to control.
Accompanying drawing explanation
Fig. 1 represents structural representation of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention being integrated to powder process storage powder supplies the structure of the rotary-type pulverized coal combustion system of powder and controllable temperature to illustrate.
Referring to Fig. 1, the present invention integrates powder process storage powder and supplies the structure of the rotary-type pulverized coal combustion system of powder and controllable temperature to comprise flour mill 5, storage powder tank 18 and burner 21, and the burner hearth of burner 21 is rotation burner hearth, guarantees that like this burning reliably, is efficiently difficult for slagging scorification.The top of flour mill 5 is provided with analytical engine, flour mill 5 grinds into coal dust by lump coal, coal powder size and output can be controlled by adjusting the analytical engine rotating speed on flour mill 5 tops, there is feed hopper the case side of flour mill 5, in flour mill 5, there are grinding roller and bull ring, rely between grinding roller and bull ring and roll, thereby reach the object of pulverizing coal cinder.On the top of storage powder tank 18, establish respectively little powder collector 22 and large powder collector 23.Feed opening place at storage powder tank 18 establishes machine supplying powder 17, machine supplying powder is connected with three-way pipe 2 16 17 times, one end of three-way pipe 2 16 is connected with burner 21 by wind path 6 20, the other end of three-way pipe 2 16 is connected with blower fan 2 12, on blower fan 2 12, establish valve 1 and valve 2 13,2 13, valve 1 and valve are connected with three-way pipe 1.Feed hopper place at flour mill 5 establishes coaling machine 4, and coaling machine 4 can be batcher, belt feeder or screw feeding machine, and coal bunker 3 is established on the top of coaling machine 4, and the door capable of being opened of controlling lower coal amount is established in the bottom of upper coal bunker 3.Flour mill 5 is connected with large powder collector 23 by wind path 1, in flour mill 5 bottoms, establishes blower fan 1, and blower fan 1 is connected with large powder collector 23 by wind path 3 24, and blower fan 1 is also connected with little powder collector 22 by wind path 2 25.2 25 of blower fan 1 and wind paths are connected with three-way pipe 37, the other end of three-way pipe 37 is connected with three-way pipe 1, at three-way pipe 37 and 2 25 of wind paths, be connected with valve 6, one 10 of three-way pipe 37 and blower fans are connected with valve 8, and 5 11 of three-way pipe 37 and wind paths are connected with valve 9.Little powder collector 22 is connected with deduster 2 by wind path 4 27.The igniter 19 of coaling machine 4 of the present invention, machine supplying powder 17, flour mill 5, analytical engine, blower fan 1, blower fan 2 12, burner 21, burner, all electric original papers such as level-sensing device up and down of storage tank 18 are by electric-control system 1 centralized Control.
During work, with forklift, the lump coal that is less than 25mm is loaded in upper coal bunker 3, under the bucket of upper coal bunker 3, has door capable of being opened can control lower coal amount.Lump coal is delivered into flour mill 5 through coaling machine 4, and the upper coal speed of coaling machine 4 can be controlled by adjusting motor speed table (or frequency converter) on electric-control system 1.Lump coal, from the feed hopper of the case side of flour mill 5 adds in machine, relies on rolling between grinding roller in flour mill 5 and bull ring, thereby reaches the object of pulverizing coal cinder.Flour mill 5 grinds into coal dust by lump coal, and coal powder size and output can be controlled by adjusting the analytical engine rotating speed on flour mill 5 tops.
After pulverized coal grinding, by blower fan 1, blown afloat, the analytical engine through flour mill 5 tops carries out sorting, and the pipeline of the process of the stream with the wind wind path 1 that fineness meets the specification enters large powder collector 23 collections and enters storage powder tank 18 again, and excessively thick material enters again flour mill 5 and refaces.Whole system apoplexy circulates in wind path, the superfine powder that large powder collector 23 could not be collected is got back to blower fan one 10 places through the pipeline of wind path 3 24 and through the pipeline of wind path 2 25, is entered little powder collector 22 again, superfine powder enters in storage powder tank 18 through collecting, air after purification enters in deduster 2 through the pipeline of wind path 4 27, and general coal powder size is controlled at 100 order left and right and can meets burner 21 and uses.By this cyclic process, the qualified coal dust that flour mill 5 is produced and superfine powder all enter into storage powder tank 18 and store in order to burner use, have not a particle of waste, clean environmental protection.
When burner 21 is not lighted, what flour mill 5 used when grinding standby coal dust is wind path described above.
After burner 21 is lighted, just can valve-off 6 Open valves 9 when on one side abrasive dust burns on one side, make the air that contains superfine powder directly by the pipeline of wind path 5 11, through three-way pipe 1 and the main pulverized coal flow under storage powder tank 18, converge, enter together the interior burning of burner 21, now, can be by adjusting valve 1 and the desirable flame of valve 2 13 acquisition.Due to on-the-spot powder process, storage powder; so the mode of production can flexible combination; because being grinds in the tank that some coal dusts are stored in powder tank 18 in advance; the tank of storage powder tank 18 is provided with upper and lower level-sensing device; burner 21 can determine whether to open flour mill 5 after lighting as required; even if flour mill 5 has had fault, do not need the maintenance of ceasing fire yet, can not affect production.
Coal dust machine supplying powder 17(under tank in storage powder tank 18 can be batcher, also screw feeding machine) blanking on demand, discharge quantity is by the Frequency Converter Control on electric-control system 1, to control furnace temperature.Blower fan 2 12 is transported to the interior burning of burner 21 by valve 1 and valve 2 13 by coal dust.The adjustment of the air quantity of coming by adjustment and the wind path 5 11 of valve 2 13 can obtain desirable flame.
For lower than 100 object coal dusts, the coal dust in storage powder tank 18 is delivered to the stove chamber inner combustion of burner 21 through powder-supply system, for powder amount and air quantity, all can conveniently adjust.Need be by igniter 19 by diesel oil atomization during igniting, be sprayed onto in burner 21 bodies of heater and light, supply coal dust simultaneously, when coal dust can spontaneous combustion in the hearth body of burner 21, get final product fuel cut-off, fuel feeding process is generally at 1-3 minute, after spontaneous combustion of pulverized coal, by the air door air quantity of adjusting on upper coal amount and air quantity and burner, can obtain desirable flame and material temperature.
The present invention has realized powder process, storage powder, has supplied the institutional operation of powder, air feed, burning, for using pulverized coal combustion system that sound assurance is provided on industrial furnace and asphalt grain mixing equipment, whole process is carried out entirely in closed conduit, totally pollution-free, simple, convenient and furnace temperature is controlled.
Claims (5)
1. integrate powder process storage powder for a rotary-type pulverized coal combustion system for powder and controllable temperature, comprise flour mill, storage powder tank and burner, is characterized in that establishing respectively on the top of described storage powder tank little powder collector and large powder collector; Feed opening place at storage powder tank establishes machine supplying powder, under machine supplying powder, be connected with three-way pipe two, three-way pipe two one end are connected with burner by wind path six, and three-way pipe two other ends are connected with blower fan two, on blower fan two, establish valve one and valve two, two, valve one and valve are connected with three-way pipe one; Feed hopper place at described flour mill establishes coaling machine, and coal bunker is established on coaling machine top; Flour mill is connected with large powder collector by wind path one, in flour mill bottom, establishes blower fan one, and blower fan one is connected with large powder collector by wind path three, and blower fan one is also connected with little powder collector by wind path two; Two of blower fan one and wind paths are connected with three-way pipe three, and the other end of three-way pipe three is connected with three-way pipe one by wind path five, at the mouth of pipe place of three-way pipe three, establishes respectively valve; Little powder collector is connected with cleaner by wind path four; Level-sensing device up and down in the igniter of the analytical engine of coaling machine, machine supplying powder, flour mill, flour mill upper end, blower fan one, blower fan two, burner, burner, storage powder tank is by electric-control system centralized Control.
2. the powder process storage powder that integrates according to claim 1 is for the rotary-type pulverized coal combustion system of powder and controllable temperature, and the burner hearth that it is characterized in that described burner is rotation burner hearth.
3. the powder process storage powder that integrates according to claim 1, for the rotary-type pulverized coal combustion system of powder and controllable temperature, is characterized in that the hood shell-side face of flour mill is established feed hopper, has established grinding roller and the bull ring of the effect of rolling in flour mill.
4. the powder process storage powder that integrates according to claim 1, for the rotary-type pulverized coal combustion system of powder and controllable temperature, is characterized in that described coaling machine is batcher, belt feeder or screw feeding machine.
5. the powder process storage powder that integrates according to claim 1 is for the rotary-type pulverized coal combustion system of powder and controllable temperature, it is characterized in that described upper coal bunker bottom establishes the door capable of being opened of controlling lower coal amount.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410320096.XA CN104089296B (en) | 2014-07-08 | 2014-07-08 | Integrate powder process storage powder for the rotary-type pulverized coal combustion system of powder and temperature controllable |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410320096.XA CN104089296B (en) | 2014-07-08 | 2014-07-08 | Integrate powder process storage powder for the rotary-type pulverized coal combustion system of powder and temperature controllable |
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| CN104089296A true CN104089296A (en) | 2014-10-08 |
| CN104089296B CN104089296B (en) | 2016-06-08 |
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| CN106322364A (en) * | 2015-07-03 | 2017-01-11 | 邹人养 | Grate-fired furnace and kiln mixed combustion system |
| CN107254334A (en) * | 2017-08-02 | 2017-10-17 | 魏厚建 | A kind of solid-liquid phase change latent heat environmental protection energy method of the double compounding fuel of utilization high performance-price ratio |
| CN108458358A (en) * | 2018-04-28 | 2018-08-28 | 中国大唐集团科学技术研究院有限公司华东分公司 | A kind of coal base distribution boiler transmission ＆ distribution pulverized coal system |
| CN117184910A (en) * | 2023-08-29 | 2023-12-08 | 煤炭科学技术研究院有限公司 | Pulverized coal feeder and method for cleaning pulverized coal feeder |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117184910A (en) * | 2023-08-29 | 2023-12-08 | 煤炭科学技术研究院有限公司 | Pulverized coal feeder and method for cleaning pulverized coal feeder |
| CN117184910B (en) * | 2023-08-29 | 2024-03-08 | 煤炭科学技术研究院有限公司 | Pulverized coal feeder and method for cleaning pulverized coal feeder |
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