CN203963918U - A kind of blue charcoal tail gas, coal slime, Coal Gangue Mixing generating resource comprehensive utilization system - Google Patents

A kind of blue charcoal tail gas, coal slime, Coal Gangue Mixing generating resource comprehensive utilization system Download PDF

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Publication number
CN203963918U
CN203963918U CN201320879800.6U CN201320879800U CN203963918U CN 203963918 U CN203963918 U CN 203963918U CN 201320879800 U CN201320879800 U CN 201320879800U CN 203963918 U CN203963918 U CN 203963918U
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China
Prior art keywords
coal
air
boiler
blue charcoal
tail gas
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Expired - Lifetime
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CN201320879800.6U
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Chinese (zh)
Inventor
马爱香
江建刚
任亚军
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SHAANXI DATANG NEW POWER ELECTRIC INVESTMENT Co
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SHAANXI DATANG NEW POWER ELECTRIC INVESTMENT Co
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Abstract

The utility model discloses a kind of blue charcoal tail gas, coal slime, Coal Gangue Mixing generating resource comprehensive utilization system, comprising: boiler, coal bunker, feeder, coal conveyer belt, primary air fan, overfire air fan, fluidized air blower, air-introduced machine, deduster, chimney; Coal conveyer belt, coal bunker, feeder and boiler connect and compose coal supply system successively; Primary air fan, overfire air fan and boiler connect and compose supply air system; Fluidized air blower and boiler connect and compose returning charge and return ash system; Boiler and deduster, air-introduced machine, chimney are connected successively and form flue gas system, and blue charcoal tail gas is sent into and in boiler room, formed blue charcoal exhaust pipe system by the female pipe of gas transmission.Compare with the Lan Tan factory gas-solid waste treatment technique of prior art, after the blue charcoal tail gas that the utility model Jiang Lan charcoal factory diffuses, discarded coal slime and rich gangue mix, adopt circulating fluidized bed boiler burning to generate electricity, there is the features such as low-carbon (LC), energy-saving and environmental protection.

Description

A kind of blue charcoal tail gas, coal slime, Coal Gangue Mixing generating resource comprehensive utilization system
Technical field
The utility model belongs to energy and environment resist technology field, is specifically related to a kind of blue charcoal tail gas, coal slime, Coal Gangue Mixing generating resource comprehensive utilization system.
Background technology
Blue charcoal stove produces a large amount of blue charcoal tail gas in process of production, and one ton of blue charcoal of every production will produce the about 700Nm3 of tail gas left and right, the about 1700-2000 kilocalorie of calorific value.Traditional vent gas treatment mode is substantially all outer row, in outer row's tail gas, contained carbon monoxide and hydrogen methane, oxygen etc. are a kind of good Gas Energy Sources, in addition in tail gas, also contain the pernicious gases such as many sulfur dioxide and hydrocarbon, if this tail gas is not used appropriately, will cause environmental pollution.
Byproduct coal slime in blue charcoal production process has higher thermal value equally, can substitute raw coal completely as Power Plant Fuel.Owing to there is no effective mode of movement, be difficult to for a long time realize its commercial Application always.
Gangue is the solid waste producing in washing process in coal mining, choosing.According to the statistics made by the departments concerned, the total burden of gangue that China adds up to stack over the years is at present about 4,500,000,000 t to root, and year discharge rate is 300,000,000 t only, wherein bastard coal approximately 200,000,000 t that can be used for generating of annual discharge.
The accumulation discharge of coal slime, gangue, had both wasted national resources, accounted for again and had pressed a large amount of soils, made the ecological environment in mining area be subject to polluting and destroying, and oneself is through becoming the trade waste that China's cumulative stock and occupied ground are maximum.Up to the present, coal slime, gangue utilize dynamics large not enough, technology imperfection, regional development is uneven, seriously affects the utilization of land resource, atmosphere pollution, harm water and soil.
The utility model is as comprehensive utilization of resources project, main utilizability, actuality resource; The property improved in environmental protection and urgency; Profitability economically, legitimacy; The aspects such as the advance of technology and equipment, practicality, reliability are carried out research and analysis, are drawn research conclusion, for project realizability provides reliable foundation.
Utility model content
The purpose of this utility model is to solve the pollution that blue charcoal tail gas, coal slime and gangue that industrial blue charcoal produces in process of production cause, reduce greenhouse gas emission, by CDM, obtain extra income, to improve the economic attractiveness of project, promote blue charcoal industry cleaner production, realize recycling economy, make it have good social benefit, economic benefit and environmental benefit.
For realizing above object, the utility model provides a kind of blue charcoal tail gas, coal slime, Coal Gangue Mixing generating resource comprehensive utilization system, comprising: boiler, coal bunker, feeder, coal conveyer belt, primary air fan, overfire air fan, fluidized air blower, air-introduced machine, deduster, chimney; Coal conveyer belt, coal bunker, feeder and boiler connect and compose coal supply system successively; Primary air fan, overfire air fan and boiler connect and compose supply air system; Fluidized air blower and boiler connect and compose returning charge and return ash system; Boiler and deduster, air-introduced machine, chimney are connected successively and form flue gas system, and blue charcoal tail gas is sent into and in boiler room, formed blue charcoal exhaust pipe system by the female pipe of gas transmission.
Further, blue charcoal exhaust pipe system, comprises air supply pipe, Safety water seal, drain water seal and tail gas exhaust stack.
Further, feeder and boiler junction are provided with expansion joint.
Further, primary air fan, overfire air fan entrance arrange wind circulating system, and circulated air is drawn by the outlet of Secondary Air preheater, enters into respectively the porch of primary air fan, overfire air fan.
Further, fluidized air blower quantity is two, and a preparation and a use is installed flowmeter, pressure gauge and air-quantity adjusting valve on entrance airduct.
Further, flue gas system back-end ductwork set temperature, pressure, flow measurement device, and install explosion proof door.
In the utility model, blue charcoal tail gas Lan Tanzhu production technology district flutters after the processing such as tar facility, desulfurizer, cleaner through electricity, through the female pipe of tail gas, be delivered between generator car in boiler room, again by carrying female pipe to draw arm respectively to boiler air feed, then the exhaust combustion device by boiler is sent into stove chamber inner combustion after blue charcoal tail gas is mixed with secondary hot-air.Meanwhile, coal slime, gangue are transported to stokehold coal bunker through coal conveyer belt, enter the emulsion zone territory burning of boiler furnace bottom after feeder falls into boiler coal chute.In feeder, pass into a cold wind as sealing air.The coal spout upper end wind of delivering coal, there is coal spread wind lower end near water-cooling wall place, and deliver coal wind and coal spread wind are supplied with by a hot-air system.After apparatus for ash separation is returned in returning charge, smoke gas flow is after boiler tail heat exchanger carries out heat exchange, and the temperature reduction that keeps is finally discharged in atmosphere successively after deduster, air-introduced machine, chimney.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is structural representation of the present utility model;
In figure: 1-boiler 2-coal bunker 3-feeder 4-coal conveyer belt 5-primary air fan 6-overfire air fan 7-deduster 8-air-introduced machine 9-fluidized air blower 10-chimney.
The specific embodiment
For making object, technical scheme and the advantage of the utility model embodiment clearer, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Embodiment 1:
With reference to Fig. 1, the utility model a kind of blue charcoal tail gas, coal slime, Coal Gangue Mixing generating resource comprehensive utilization system are provided, comprising: boiler 1, coal bunker 2, feeder 3, coal conveyer belt 4, primary air fan 5, overfire air fan 6, fluidized air blower 9, air-introduced machine 8, deduster 7, chimney 10; Coal conveyer belt 4, coal bunker 2, feeder 3 connect and compose coal supply system successively with boiler 1; Primary air fan 5, overfire air fan 6 connect and compose supply air system with boiler 1; Fluidized air blower 9 connects and composes returning charge with boiler 1 and returns ash system; Boiler 1 and deduster 7, air-introduced machine 8, chimney 10 are connected successively and form flue gas system, and blue charcoal tail gas is sent into and in boiler room, formed blue charcoal exhaust pipe system by the female pipe of gas transmission.
Further, blue charcoal exhaust pipe system, comprises air supply pipe, Safety water seal, drain water seal and tail gas exhaust stack.
Further, feeder 3 is provided with expansion joint with boiler 1 junction.
Further, primary air fan 5, overfire air fan 6 entrances arrange wind circulating system, and circulated air is drawn by the outlet of Secondary Air preheater, enters into respectively the porch of primary air fan 5, overfire air fan 6.
Further, fluidized air blower 9 quantity are two, and a preparation and a use is installed flowmeter, pressure gauge and air-quantity adjusting valve on entrance airduct.
Further, flue gas system back-end ductwork set temperature, pressure, flow measurement device, and install explosion proof door.
The utility model comprises that blue charcoal exhaust pipe system, coal supply system, supply air system, returning charge return ash system, air and gas system.
1) blue charcoal exhaust pipe system
Blue charcoal exhaust pipe system, is comprised of air supply pipe, Safety water seal, drain water seal and tail gas exhaust stack etc.Boiler 1 air feed supervisor introduced outward by factory building, and import supervisor establishes total shut-off valve, is provided with exhaust stack before valve, is provided with scavenging conduit joint after valve.In addition, on air feed supervisor, blue charcoal tail gas electromagnetic shut-off valve and electric flow control valve are set, by Flow-rate adjustment valve regulation boiler 1 air inflow.Wherein, electromagnetic shut-off valve and furnace flame monitoring system, send, induced-draught fan interlocking.When the emergencies such as blue charcoal tail gas appearance of abnormal pressure, burner hearth stop working occur, energy and alarm automatically cut-out source of the gas.
The female pipe of the front tail gas of boiler 1 is equiped with a safety water seal device, the partition for boiler 1 with the female pipe of air feed.Water inlet pipe and adjutage are housed on Safety water seal, in the time of need to cutting off, by water inlet pipe, to Safety water seal, supply a certain amount of water, carbon black tail gas just and between boiler 1 separates completely like this, plays sealing function, produces blast in order to avoid blue charcoal tail gas is released into boiler 1; When boiler 1 needs fuel, open electronic discharging valve, the water in Safety water seal is all bled off, the exhaust pipe that leads to boiler 1 is unimpeded, and carbon black tail gas enters boiler 1 burning by burner.When boiler 1 operation, Safety water seal also can be used as surge tank, and the tail gas pressure that makes to enter boiler 1 is comparatively stable.
Carbon black tail gas pipeline is equipped with emergency episode exhaust stack, when the urgent blowing out of needs or while having other emergency episode, opens the motor-driven valve on emergency episode exhaust stack, and the residual air in pipeline and boiler 1 is bled off, and avoids producing explosion accident.Blue charcoal exhaust pipe system arranges exhaust stack at following key position:
(1) the total stop valve of boiler room air inlet pipe before;
(2) peak of the end of tail gas main, pipeline, equipment;
(3) pipeline section between front two stop valves of burner;
(4) other need to consider the suitable place of diffusing.
Flow, pressure, the temperature measuring equipment of tail gas are installed on boiler 1 air supply pipe, and are provided with explosion proof door.
For guaranteeing that gas fired-boiler 1 can safety and stability burn, must keep into burner pressure stability, pressure oscillation too conference causes that tempering or de-fire set off an explosion, native system requires gas equipment consider the special-purpose pressure regulation in power plant and establish pressure regulator on blue charcoal raw coke oven gas pipeline, to guarantee the stable of boiler 1 use atmospheric pressure.
In design, the selection of pipeline material, valve and annex thereof wants safety tight reliable, opens and closes flexibly, and its pressure rating is than the high one-level of design pressure, and can bear maximum working (operation) pressure (MWP).
In boiler room, establish combustion gas checkout gear, strengthen indoor ventilation system.Stokehold burnt gas valve operating desk centralized arrangement, strengthens this region gas leakage and detects, and be provided with special-purpose forced ventilation facility.
In order to prevent that fuel gas and air mixture from entering burner hearth and setting off an explosion.Before boiler 1 igniting or while overhauling, must purge pipeline, by exhaust stack, enter atmosphere, exhaust stack outlet at least exceeds 2.0 meters, roof.
2) coal supply system
After coal slime, gangue mix by a certain percentage, by coal conveyer belt 4, from stokehold framework, directly fall into stokehold coal bunker 2, then pass through feeder 3 directly into stove.Feeder 3 is connected with coal spout by expansion joint, solves the differential expansion between feeder 3 and boiler 1 furnace wall cooling.The fire coal of certain particle size enters through feeder 3 coal spout that is arranged in boiler 1 front wall, the coal spout upper end wind of delivering coal, there is coal spread wind lower end near water-cooling wall place, feed is slipped to air distribution plate place, lower end by the wind of delivering coal of self gravitation and introducing along coal spout and enters burner hearth, and coal-supplying amount is adjusted by changing the rotating speed of feeder 3.In feeder 3, pass into a cold wind as sealing air.Fuel is sent into the emulsion zone territory that enters boiler 1 bottom, combustion chamber after coal spout by feeder 3.Coal spread wind pipe is connected to the port of each coal spout, and is equipped with air door air quantity is controlled.
3) supply air system
In supply air system, every stove configuration primary air fan 5 and overfire air fan are 6 each.A wind is by primary air fan 5 Hou Fen tri-tunnels, one tunnel divides two-way directly to enter air compartment of burner hearth bottom after air preheater heating again, air compartment and burner hearth are separated by by air distribution plate, air distribution plate is that water-cooling wall and band steel are welded, on it, be evenly arranged blast cap, one time wind evenly enters burner hearth, fluidized bed material by these blast caps; An other road enters in feeder 3 and passes into a cold wind as sealing air; Third Road is as coal spread wind, and coal spread wind pipe is connected to the port of each coal spout, and should be equipped with air door to control.Overfire air jet after Secondary Air enters burner hearth by overfire air fan 6 after air preheater heating on wall, send into respectively the space of lower furnace portion differing heights, spout keeps high wind speed, and during operation, secondary wind pressure is generally not less than boiler 1 design pressure, and Secondary Air plays combustion-supporting and effect control combustion.In order accurately to control the burning of air quantity tissue, on primary and secondary air house steward, be provided with MOD and wind measuring device.
Unlikely too low in order to guarantee to move the temperature of cold wind, primary air fan 5, overfire air fan 6 entrances arrange wind circulating system, and circulated air is drawn by the outlet of Secondary Air preheater, enters into respectively the porch of primary air fan 5, overfire air fan 6.
4) ash system is returned in returning charge
Two hp fluid air machines 9 (a preparation and a use) are set.Fluidized wind is by after a hp fluid air machine 9, become high pressure cold wind, by the little blast cap in material returning device, sent into, loosening wind and returning charge wind as material returning device, there is difference in blast cap the number of openings and the aperture of loosening wind and returning charge wind, and returning charge wind is large, and loosening wind is little, the air-supply of employing separating chamber, the upper installing of the female pipe of entrance airduct flowmeter, pressure gauge and air-quantity adjusting valve.
5) flue gas system
Flue gas after separation is after boiler tail heat exchanger carries out heat exchange, and the temperature reduction that keeps is finally discharged in atmosphere successively after deduster 7, air-introduced machine 8, chimney 10.Back-end ductwork set temperature, pressure, flow measurement device, and install explosion proof door.
Compare with the Lan Tan factory gas-solid waste treatment technique of prior art, after the blue charcoal tail gas that the utility model Jiang Lan charcoal factory diffuses, discarded coal slime and rich gangue mix, the comprehensive utilization that adopts circulating fluidized bed boiler burning to generate electricity has the features such as low-carbon (LC), energy-saving and environmental protection.Imbody is as follows:
1, the utility model leverages fully on the traffic convenience that existing enterprise has, the advantage of resource, abundant raw materials, for environment purification, comprehensive utilization of resources, energy-saving and cost-reducing, reduce the aspects such as greenhouse gas emission and have positive facilitation, meet national industrial policies.
2, use blue charcoal tail gas, coal slime and gangue, reduce waste air and the pollution of solid waste to environment outside Liao Lan charcoal factory, realize cleaner production.
3,, after native system engineering is built up, environmental pollution improvement, by measures such as burning, high chimney emission, can produce certain positive role to improving air quality.
4, after project is built up, recycle the online of generate electricity of blue charcoal tail gas, coal slime and gangue that blue charcoal production process produces, thereby reduced local electrical network, discharge because of the CO2 that coal fired power generation produces.In addition, electric power again back feeding coalification is produced, and will alleviate to a certain extent the pressure of local electrical network.The Circular Economy of so final formation comprehensive utilization, for regional economy healthy and sustainable development contributes, for creating tax revenue in locality, and solves local surplus labor force.
It should be noted that, in this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby the process, method, article or the equipment that make to comprise a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or be also included as the intrinsic key element of this process, method, article or equipment.The in the situation that of more restrictions not, the key element being limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
Above embodiment only, in order to the technical solution of the utility model to be described, is not intended to limit; Although the utility model is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.

Claims (6)

1. blue charcoal tail gas, coal slime, a Coal Gangue Mixing generating resource comprehensive utilization system, comprising: boiler, coal bunker, feeder, coal conveyer belt, primary air fan, overfire air fan, fluidized air blower, air-introduced machine, deduster, chimney; Coal conveyer belt, coal bunker, feeder and boiler connect and compose coal supply system successively; Primary air fan, overfire air fan and boiler connect and compose supply air system; Fluidized air blower and boiler connect and compose returning charge and return ash system; Boiler and deduster, air-introduced machine, chimney are connected successively and form flue gas system, and blue charcoal tail gas is sent into and in boiler room, formed blue charcoal exhaust pipe system by the female pipe of gas transmission.
2. a kind of blue charcoal tail gas according to claim 1, coal slime, Coal Gangue Mixing generating resource comprehensive utilization system, is characterized in that: described blue charcoal exhaust pipe system, comprises air supply pipe, Safety water seal, drain water seal and tail gas exhaust stack.
3. a kind of blue charcoal tail gas according to claim 1 and 2, coal slime, Coal Gangue Mixing generating resource comprehensive utilization system, is characterized in that: described feeder and boiler junction are provided with expansion joint.
4. a kind of blue charcoal tail gas according to claim 1 and 2, coal slime, Coal Gangue Mixing generating resource comprehensive utilization system, it is characterized in that: described primary air fan, overfire air fan entrance arrange wind circulating system, circulated air is drawn by the outlet of Secondary Air preheater, enters into respectively the porch of first and second blower fan.
5. a kind of blue charcoal tail gas according to claim 1 and 2, coal slime, Coal Gangue Mixing generating resource comprehensive utilization system, it is characterized in that: described fluidized air blower quantity is two, a preparation and a use, installs flowmeter, pressure gauge and air-quantity adjusting valve on entrance airduct.
6. a kind of blue charcoal tail gas according to claim 1 and 2, coal slime, Coal Gangue Mixing generating resource comprehensive utilization system, is characterized in that: described flue gas system back-end ductwork set temperature, pressure, flow measurement device, and install explosion proof door.
CN201320879800.6U 2013-12-30 2013-12-30 A kind of blue charcoal tail gas, coal slime, Coal Gangue Mixing generating resource comprehensive utilization system Expired - Lifetime CN203963918U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105987381A (en) * 2015-05-29 2016-10-05 陕西华电瑶池发电有限公司 Fire coal calcium-sulfur ratio optimizing balanced desulfurization and denitrification method for CFB boiler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105987381A (en) * 2015-05-29 2016-10-05 陕西华电瑶池发电有限公司 Fire coal calcium-sulfur ratio optimizing balanced desulfurization and denitrification method for CFB boiler

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Granted publication date: 20141126