CN203116061U - High sodium coal sodium-removal quality-improving fan-milling powder-processing and water recovery circle power generation system - Google Patents
High sodium coal sodium-removal quality-improving fan-milling powder-processing and water recovery circle power generation system Download PDFInfo
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- CN203116061U CN203116061U CN2013201244042U CN201320124404U CN203116061U CN 203116061 U CN203116061 U CN 203116061U CN 2013201244042 U CN2013201244042 U CN 2013201244042U CN 201320124404 U CN201320124404 U CN 201320124404U CN 203116061 U CN203116061 U CN 203116061U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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Abstract
The utility model relates to a high sodium coal sodium-removal quality-improving fan-milling powder-processing and water recovery circle power generation system. The high sodium coal sodium-removal quality-improving fan-milling powder-processing and water recovery circle power generation system comprises a drying tube, a coal miller, a coal powder separator, a coal powder collector, a coal powder bunker, an air-powder mixer and a boiler, wherein the drying tube, the coal miller, the coal powder separator, the coal powder collector, the coal powder bunker, the air-powder mixer and the boiler are sequentially communicated in a series mode, and the high sodium coal sodium-removal quality-improving fan-milling powder-processing and water recovery circle power generation system further comprises a mixing chamber, a turbine, a gas-exhausting waste heat recovery device, a gas-exhausting condensing recovery device, a raw coal sodium-removal device, a separation device and a water processing unit, wherein the gas-exhausting waste heat recovery device, the gas-exhausting condensing recovery device, the raw coal sodium-removal device, the separation device and the water processing unit are sequentially connected. The high sodium coal sodium-removal quality-improving fan-milling powder-processing and water recovery circle power generation system has the advantages of being capable of reducing alkali metal content in raw coal, greatly relieving or radically solving the problems of coking inside a boiler and contamination and corrosion of a high sodium coal power generating set, effectively applied to purification and quality-improvement processing of zhundong coal and other fault coal high in water content and sodium content, simple in technology, safe to operate, low in investment, energy-saving, environmental-friendly, cycling and economical, not only capable of being applied to supplying of fine clean coal, but also capable of being used for a high-sodium-coal-burning pit power generation set, and co-production of coal and electricity is achieved.
Description
Technical field
The utility model belongs to the coal power generation technical field, relates to high sodium coal power generation technology, says with having, relates to a kind of high sodium coal and takes off sodium upgrading fan powder-grinding and water recovery association circulating power generation system.
Background technology
High sodium coal refers to the higher special coal of a class of alkali metal compound composition in the coal.In all kinds of alkali metal compounds, generally in the majority with the sodium based compound, so be referred to as " high sodium coal ".At present, the high sodium coal of China mainly concentrates on the accurate eastern coalfield of Xinjiang Junggar Basin east, and accurate eastern coalfield resources reserves reach 3,900 hundred million tons, and adding up at present to verify the coal resources reserves is 2,136 hundred million tons, 1.4 ten thousand square kilometres of coalfield coal-forming areas are the self-contained coalfields of the current maximum of China.Calculate with present coal in China annual production, just can use 100 years in the whole nation in the eastern coalfield of standard.Because resources reserve is abundant and the strip mining transformation cost is low, accurate eastern coalfield has become the hot zones of coal in China industry new round investment.
Accurate eastern coal belongs to the natural clean coal of high-quality of special low ash content, special low-sulfur, high heating value (high calorific power), low metamorphic grade.No matter be as generating or be used for doing the raw material of Coal Chemical Industry, all be lowly pollute, the lustration raw material of low emission, can effectively save the treatment of wastes produced expense.Good material base has been laid in all the be as the criterion coal electricity in east area and the development of Coal Chemical Industry of these superior natural conditions.Xinjiang generation current total installation of generating capacity is 1,800 ten thousand KW, and according to country " 12 " planning, 12 last Xinjiang will reach 100,000,000 KW, and wherein accurate eastern coalfield is " Xin Diandong send " topmost energy safeguard base.
On the whole, the ature of coal in area, accurate east has following characteristics: middle high-moisture; Medium calorific capacity; Easily catch fire, easy to burn out; Strong coking; High basic metal content, contamination property by force.At present, strong coking has proposed great challenge with strong contamination property to design and the operation of firing accurate eastern coal utility boiler, the result of trial operation of low capacity unit shows, when firing accurate eastern coal entirely in the boiler stove coking very serious with heating surface contamination problem, boiler can't long-time running.Trace it to its cause, these problems all with coal ash in alkali metal content higher closely related.
At present, each electricity power enterprise of China builds the power plant in area, accurate east, the accurate eastern coal that can only utilize 20-30% with mix burning after other coal is mixed, it is very limited to aim at eastern coal use amount like this, again from other local high-quality fire coal of buying, increased the cost of electricity-generating of electricity power enterprise simultaneously.Aim at the exploitation in eastern coalfield and the construction in power supply base and brought difficulty, therefore be difficult to the advantage of the eastern coal of standard is given full play to.
Other mixes the burning way for the another kind that generates electricity in order to utilize the eastern high sodium coal of standard: admix a silicon of fixing a number or alundum (Al etc. as adopting, can adjust the ash fusion point of stove internal combustion, can adopt accurate eastern high sodium coal in boiler, to burn more, also can play certain contamination that improves boiler and the problem of slagging scorification, but increased the effect of attrition boiler service life of boiler simultaneously and reduced coal-fired calorific capacity, this makes the operating cost that must increase construction investment and power plant again.
Therefore, how to reduce the alkali metal content in the accurate eastern coal, safe and economical boiler operation is over a long time guaranteed in anti-slagging scorification, contamination and corrosion, being electricity power enterprise and other industry institute inevitable problem that uses accurate eastern coal, also is the significant challenge that the construction of base of the accurate eastern coal electricity of current development faces.
In addition, the ature of coal moisture in area, accurate east is more, in the prior art, generally adopts fanned powder-grinding system or medium-speed pulverizer pulverized coal preparation system at the pulverized coal preparation system at the large-sized boiler of middle hydrogenous coal.Be by brown coal drying in this pulverized coal preparation system, the evaporation of the water in the brown coal is become weary gas, grind brown coal then and become coal dust, send coal dust and weary gas to the burner hearth burning in the lump simultaneously, will enter in the atmosphere in the lump with chimney then.Because the weary gas of high-moisture is admitted to burner hearth, makes the inner flue gas of the stove amount increase, and reduced fire box temperature.
At above-mentioned deficiency, once applied for that the Shen Granted publication number be the Chinese patent of CN202229208U, " a kind of stove cigarette drying and water reclaim warehouse formula fan and grinds the pulverized coal carried by hot air pulverized coal preparation system " before the applicant.This system comprises boiler, is connected in series run coal bin, descending drying tube, blower mill, the mill separator that is communicated with, pulverized coal distributor successively; Described coal dust classifier is communicated with the burner of boiler again, also comprise mixing chamber, this mixing chamber first air inlet and second air inlet are communicated with smoking mouth and the cold smoke blower fan of boiler respectively, what described cold smoke extension set was communicated with boiler is located at flue tail flue gas dust removal device, the gas outlet of described mixing chamber is communicated with descending drying tube again, the other pressure fan that is provided with of described boiler flue, this pressure fan air preheater interior with being located at flue is communicated with, it is characterized in that: also be provided with weary gas separating device between described mill separator and the pulverized coal distributor successively, the fine coal storehouse, machine supplying powder and coal, pulverulent fuel mixer, described weary gas separating device top has weary gas outlet, should weary gas outlet be communicated with weary air filter, the coal outlet of described weary air filter is communicated with the fine coal storehouse again, the gas outlet of weary gas separating device is communicated with a weary gas blower fan, and this weary gas blower fan is communicated with desulfurizing tower again; Described air preheater also is communicated with coal, pulverulent fuel mixer.
By such setting, because the weary gas of steam that includes that produces does not together enter burner hearth in company with dried brown coal, and the interior temperature of stove is raise, and helps to improve fuel economy, the heating surface area of boiler can be reduced, boiler volume and manufacturing cost can be obviously lowered.In addition, this system is very low as its oxygen content of drier with high-temperature flue gas and cold smoke, has so just avoided the generation of brown coal deflagration accident havings in dry shattering process.In addition, the utility model is sent dried brown coal into burner with hot blast, and one side can suitably improve the outlet temperature behind the coal pulverizer, can significantly improve the flammability of fuel like this, the boiler low load stable combustion performance strengthens, and enough hot-airs are arranged when guaranteeing boiler combustion on the other hand.
But the sodium that takes off that does not fully take into account high sodium coal in the said structure is handled, and how to utilize heat energy and the moisture that contains in the weary gas, and the energy recovery of weary gas and water reclaim not enough, cause a large amount of heat energy and water resource to be wasted.
The utility model content
The purpose of the utility model embodiment is the deficiency at technology in the prior art, propose a kind of high sodium coal and take off sodium upgrading fan powder-grinding and water recovery association circulating power generation system, take off sodium and weary gas energy recovery and water in mainly solving in the high sodium coal power generation of the high-moisture technology reclaim problem, the heat energy of Hui Shouing can be used for taking off the sodium processing simultaneously, has benefit energy-conservation, that fall originally, improve economy.
In order to reach above-mentioned utility model purpose, a kind of high sodium coal that the utility model proposes takes off sodium upgrading fan powder-grinding and water reclaims association circulating power generation system, is achieved through the following technical solutions:
A kind of high sodium coal takes off sodium upgrading fan powder-grinding and water reclaims association circulating power generation system, described cycle generating system comprises drying tube, coal pulverizer, coal dust classifier, coal collector, fine coal storehouse, air and powder mixer and the boiler of serial connection connection successively at least, also comprises mixing chamber and the steam turbine that is connected to described boiler; The gas outlet of described mixing chamber is communicated with described drying tube, and the air inlet of described mixing chamber is communicated with the flue gas of described boiler and takes out mouth, and the air inlet of described coal pulverizer is communicated with described smoke duster via booster fan; It is characterized in that described cycle generating system also comprises:
Coagulate retracting device for the weary air cooling that water at low temperature is generated high-temperature water, spray chamber with sealing, the air inlet that forms cold water inlet, warm water outlet on this spray chamber and be communicated with described coal collector exhaust outlet, and be provided with the shower nozzle that is communicated with described cold water inlet in this spray chamber;
The raw coal that is used for the high sodium raw coal of washing takes off the sodium device, and the water inlet that has high sodium raw coal charging aperture, discharging opening and be communicated with described warm water outlet also is provided with steam-heating pipe and washing chamber for the heating coal-water mixture; The import of described steam-heating pipe is communicated with the extraction opening of described steam turbine, and the outlet of described steam-heating pipe is connected to described boiler through drainage pump;
Being used for will be from taking off of coming out of the described discharging opening moisture content of coal that the sodium coal separates with the waste water that is dissolved with alkali metal from device, and described moisture content of coal connects described drying tube from the coal outlet of device by failing device for coal.
Described coal collector and described weary air cooling are coagulated and also are provided with weary gas waste-heat recovery device between the retracting device, the entrance of the primary side of described weary gas waste-heat recovery device is communicated with described coal collector by blower fan, the primary side outlet is coagulated retracting device with described weary air cooling and is communicated with, and forms the refrigerant flow path in the secondary side of described weary gas waste-heat recovery device.
Described cycle generating system also comprises heat-energy recovering apparatus, and the primary side entrance of this heat-energy recovering apparatus is communicated with the wastewater outlet of described moisture content of coal from device, forms the refrigerant flow path in its secondary side.
Described cycle generating system also comprises the wastewater treatment equipment of handling for to the described waste water after separating, described wastewater treatment equipment has waterwater entrance, circulating water outlet and sodium potassium concentrated solution outlet, described waterwater entrance is communicated with the primary side outlet of described heat-energy recovering apparatus, and described circulating water outlet is connected to the cold water inlet that retracting device is coagulated in described weary air cooling.
Also be provided with air preheater in the described boiler, the air inlet of described air preheater is in communication with the outside by pressure fan, the air outlet of described air preheater is communicated with the coal burner of described boiler by secondary wind bellows, and is communicated with described air and powder mixer by booster fan.
Described mixing chamber have with described boiler flue in hot cigarette take out first air inlet that is communicated with of mouth, and take out mouthful second air inlet that is communicated with the cold smoke in the described boiler flue.
The utility model has proposed a kind of high sodium coal and has taken off sodium upgrading fan powder-grinding and water recovery association circulating power generation system, has following characteristics:
1, high basic metal content is high raw coal is under certain raw coal diameter, under the effect of the wash solution of uniform temperature and pressure, destroyed the raw coal stability of structure, make the alkali metal in the raw coal that migration and dissolving take place, thereby reduced the sodium in the coal, ash, mercury, sulphur, etc. element, the quality technology that improves coal is simple, and security of operation is invested little;
2, raw coal is washed ash and is taken off and keep uniform temperature in the sodium device to be conducive to the alkali metal material water-soluble from coal, keep the required thermal source of uniform temperature from condense used heat and to weary gas tow taste heat of the steam of coal-burning power plant, realize utilizing used heat to wash ash thus and taken off sodium, had obvious energy-saving effect.
3, the required moisturizing of system both can also can utilize the water resource that reclaims from external water source from raw coal, by reclaiming for the moisture in the weary gas, at last by reduce temperature to below the water dew point so that moisture is fully extracted.
4, system's output takes off the sodium coal by behind the drying and upgrading, having become the clean coal of high-quality can be directly used in as industrial chemicals or for coal-fired powder generating set, fire coking and heating surface contamination problem in the stove that high sodium coal power generation unit faces and improved alkali-metal etching problem to boiler body thereby significantly improve or solved at all, solved the sodium vapor separation problem in the Coal Chemical Industry gasification simultaneously.
5, the liquid after coal liquid separates enters wastewater treatment equipment, and isolated sodium potassium concentrate is recyclable for alkali processed and potash fertilizer production.
6, will lack the water resource that can reclaim in a large number after the air cooling but in the coal, and can be used as system water supplement.
7, the coal after purifying is carried out high temperature flue gas drying and handle, the moisture content that removes in the coal improves the quality of coal greatly.
Therefore, high sodium coal of the present utility model takes off sodium upgrading fan powder-grinding and water and reclaims association circulating power generation system and realized alkali metal content in the high sodium coal of effective reduction, the advantage that have that technology is simple, security of operation, investment are little, can fully effectively utilize coal fired power plant steam used heat.
Description of drawings
By the description of its exemplary embodiment being carried out below in conjunction with accompanying drawing, the above-mentioned feature and advantage of the utility model will become apparent and understand easily.
Fig. 1 is the overall structure schematic diagram of the utility model embodiment brown coal drying coal burning system.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail, so that technical staff's of the same trade understanding:
As shown in Figure 1, label is represented respectively: the 1-desulfurizing tower; The 2-heat-energy recovering apparatus; The descending drying tube of 3-; The 4-blower mill; The 5-coal dust classifier; 6-powder process pipeline; The 7-coal collector; 8-fine coal storehouse; 9-lacks the gas blower fan; The 10-machine supplying powder; The 11-air and powder mixer; The 12-powder feeding pipes; The 13-coal burner; The 14-boiler; 15-is warm, and cigarette is taken out mouth; The 16-deduster; The 17-air-introduced machine; The 18-flue; 19-cold smoke blower fan; 20-cold smoke pipeline; The 21-mixing chamber; 22-high temperature boiler flue gas tube road; The 23-pressure fan; 24-blast pipe road; 25-lacks the gas waste-heat recovery device; 26-is weary, and retracting device is coagulated in air cooling; The 27-shower nozzle; The 28-cold water pipes; The 29-raw coal takes off the sodium device; The 30-drainage pump; 31-warm water pipeline; The 32-separator; The 33-unit for treating water; The 34-chemical plant; 35-fails device for coal; The 36-steam turbine; The 37-drain water piping; The 38-pump-line; 39-boiler main steam line; The 40-condenser; The 41-condensate pump; The 42-feed pump; The 43-cold smoke is taken out mouth; The 44-air preheater; 45-secondary air channel road; 46-secondary wind bellows; The 47-booster fan.
Provide a kind of high sodium coal to take off sodium upgrading fan powder-grinding and water recovery association circulating power generation system in the present embodiment, this system principle as shown in Figure 1.The main body design of its design is by taking off sodium component high sodium coal to be taken off the sodium processing in the stokehold, wear into coal dust afterwards, again breeze airflow is carried out gas solid separation, separate the back coal dust and send into the stove internal combustion by warm wind, and the weary gas of high-moisture enters and takes off sodium component and fully reclaim heat energy and moisture, simultaneously, the steam turbine steam used heat of electricity generation system is same as the heat energy source that takes off sodium component.Below will form for the system of cycle generating system and be described in detail:
In the part of stokehold, defeated device for coal 35 connects descending drying tube 3, and descending drying tube 3 connects blower mill 4 again, and blower mill 4 connects coal dust classifier 5 again, coal dust classifier 5 connects coal collector 7 by powder process pipeline 6, and coal collector 7 is communicated with fine coal storehouse 8 again.The top of coal collector 7 has weary gas outlet.Fine coal storehouse 8 is communicated with air and powder mixer 11 by machine supplying powder 10, the coal burner 13 that air and powder mixer 11 is communicated with on the boiler 14 by powder feeding pipes 12.
The upper furnace of boiler 14 has hot cigarette and takes out mouth 15, and the rear portion of burner hearth has cold smoke and takes out mouth 43, and hot cigarette is taken out first air inlet that mouth 15 is communicated to mixing chamber 21, and cold smoke is taken out second air inlet that mouth 43 is communicated to mixing chamber 21.The flue afterbody of boiler 14 also is provided with deduster 16, and this deduster 16 is communicated to flue 18 by air-introduced machine 17, and the output of this flue 18 wherein one the tunnel is communicated to desulfurizing tower 1, and is discharged into the external world by a minute two-way; Another road is communicated with a cold smoke blower fan 19, and this cold smoke blower fan 19 is communicated in the blower mill 4 by cold smoke pipeline 20 again.
Air preheater 44 is set in the flue of boiler 14.Cool ambient air is sent in the air preheater 44 by pressure fan 23, sends into secondary air channel road 45 after being heated, and the output in this secondary air channel road 45 is by a minute two-way, wherein leads up to 46 superchargings of secondary wind bellows, sends in the coal burner 13; Another road is sent in the air and powder mixer 11 by booster fan 47 superchargings.
The gas outlet of mixing chamber 21 is communicated in the descending drying tube 3 by high temperature boiler flue gas tube road 22.
In addition, cycle generating system comprises that also retracting device 26 is coagulated in weary gas waste-heat recovery device 25, weary air cooling, raw coal takes off sodium device 29, separator 32, heat-energy recovering apparatus 2 and unit for treating water 33.Wherein:
Weary gas waste-heat recovery device 25 is equivalent to one and will lacks heat in the gas and be delivered to heat exchanger in the refrigerant, weary gas flows in the primary side of weary gas waste-heat recovery device 25, and refrigerant flows in the secondary side of weary gas waste-heat recovery device 25, by this heat is passed in the refrigerant.Wherein, the entrance of the primary side of weary gas waste-heat recovery device 25 is communicated with described coal collector by blower fan, and the primary side outlet is communicated with blast pipe road 24, and the primary side outlet inserts weary air cooling and coagulates in the retracting device 26.
The effect that retracting device 26 is coagulated in weary air cooling has two, and one is the heat that fully reclaims weary gas, and another is the moisture that fully reclaims in the weary gas.In the present embodiment, two kinds of above-mentioned energy recovery realize by the spray cooling, the spray chamber that retracting device 26 has sealing is coagulated in weary air cooling, form cold water inlet on this spray chamber, warm water outlet and the air inlet that is communicated with weary gas waste-heat recovery device 25 primary sides outlet, and be provided with the shower nozzle 27 that is communicated with described cold water inlet in this spray chamber, the cold water that is entered by cold water inlet sprays in the spray chamber uniformly through shower nozzle 27, and the water smoke that is sprayed by the weary gas that air inlet enters is reduced to below the water dew point, so that moisture is fully extracted, and by warm water outlet outflow,, after being cooled and water reclaims, there is gas vent to discharge and is sent to desulfurizing tower 1 by weary gas.
Raw coal takes off sodium device 29 and is used for the high sodium raw coal of washing, has for the high sodium raw coal in the washing access to plant, makes alkali metal washing soluble in water chamber in the high sodium raw coal and the steam-heating pipe that is used for heating.The entrance of steam-heating pipe is communicated with pump-line 38, and its outlet is sent to feed pump 42 places through drainage pump 30, drain water piping 37, and is sent back to together with the water with fixed attention that is come out by condenser 40 by feed pump 42 and carries out next circulation in the boiler.Described washing chamber has water inlet, high sodium raw coal charging aperture and discharging opening.Raw coal takes off the warm water outlet that sodium device 29 water inlets coagulate retracting device 26 by warm water pipeline 31 and described weary air cooling and is communicated with, high sodium raw coal charging aperture is used for sending into raw coal in the washing chamber, and is discharged by discharging opening by the product after the washing (taking off sodium coal and the waste water that is dissolved with alkali metal).
Separator 32 is used for taking off the sodium coal that takes off that sodium device 29 comes out from raw coal and separates with the waste water that is dissolved with alkali metal, and it has the sodium of taking off coal export and wastewater outlet.Taking off the sodium coal export is used for excluding taking off the sodium coal, take off the sodium coal and can send into drying tube 3 by defeated device for coal 27, not only realize joint production of coal and electricity, and owing to take off the sodium coal and take off from raw coal and carry a large amount of heats when sodium device 29 comes out, enter drying tube 3 timely and can effectively reduce dry institute calorific requirement, improve drying effect.In addition, take off the sodium coal and also can be used as the sale coal, thereby improve coal price and enlarge sales range.Wastewater outlet then connects heat-energy recovering apparatus 2.
Heat-energy recovering apparatus 2 is used for reclaiming the heat energy of waste water, and the primary side entrance of heat-energy recovering apparatus 2 is connected with the wastewater outlet of separator 32, and its side outlet is communicated to unit for treating water 33.And the path of formation cooling matchmaker circulation in the secondary side of heat-energy recovering apparatus 2.
Unit for treating water 33 is used for metallic elements such as waste water sodium potassium are separated, it has circulating water outlet and sodium potassium concentrated solution outlet, sodium potassium concentrated solution outlet is discharged sodium potassium concentrate, and circulating water outlet then is admitted in the cold water pipes 28, and enters weary air cooling and coagulate retracting device 26 and recycle.The sodium potassium concentrate of discharging in the sodium potassium concentrated solution outlet can be sent in the chemical plant 34, reclaims to be used for alkali processed and potash fertilizer production.
More than be exactly that high sodium coal of the present utility model takes off sodium upgrading fan powder-grinding and water recovery association circulating power generation system, its concrete working method is as follows:
Being coagulated retracting device 26 heating warm water by weary air cooling delivers into raw coal via warm water pipeline 31 and takes off in the sodium device 29, the while raw coal also is transported into raw coal and takes off in the sodium device 29, under uniform temperature and pressure, wash in wash solution by certain hour, be subjected under the double action of temperature and wash solution, can destroy the balance of former texture of coal, make water and alkali metal in raw coal crystalline solid and surface and the pore that migration and dissolving take place rapidly, make a large amount of alkali metals in the raw coal comprise sodium, potassium, mercury, sulphur, ashes etc. migrate in a large number or are dissolved in the wash solution, to reach the purification to raw coal.For the effect that ash takes off sodium is washed in raising, raw coal takes off to be kept in the sodium device 29 certain temperature and the raw coal time of staying.Raw coal takes off sodium device 29 and keeps the required thermal source of uniform temperature all from the steam of the extraction opening of steam turbine 36, steam takes off in the sodium device 29 cooling and condensation heat becomes hydrophobic at raw coal, hydrophobicly be sent to feed pump 42 places by drainage pump 30, and be sent back to and carry out next circulation in the boiler together with the water that coagulates that is come out by condenser 40 by feed pump 42.
Separator 32 makes and takes off the sodium coal and separated with waste water, the waste water that carries a large amount of heat energy enters heat-energy recovering apparatus 2 and reclaims heat energy, enter unit for treating water 33 afterwards and handle, return the cold water inlet that retracting device 26 is coagulated in weary air cooling with alkali metal ion content measured in the reduction water and as recirculated water.The sodium potassium concentrate that unit for treating water 33 is discharged is then recycled by recovery system.
The sodium coal that takes off by separator 32 outputs is sent into descending drying tube 3 through defeated device for coal 35, and mixes with the hypoxemia drier that is made of the high temperature furnace cigarette.The cold smoke that the high temperature furnace cigarette is taken out mouth 15 and boiler 14 afterbodys at the hot cigarette on boiler furnace top is taken out mouthful 43 extractions, and the two is mixed at mixing chamber 21 has certain drier of gentle flow just, and drier is delivered to descending drying tube 3 by high temperature boiler flue gas tube road 22.
After raw coal mixes in descending drying tube 3 with above-mentioned high temperature drying agent and finishes preliminarily dried, enter blower mill 4.Raw coal is fractured into coal dust in blower mill 4, the agent that also is dried simultaneously is further dry, the wind powder mixture that blower mill 4 is sent enters the coal dust classifier 5 that blower mill 4 outlets are arranged, coal dust classifier 5 is sent thick pulverized coal particle back to blower mill 4 and is continued to grind, and qualified coal dust and weary gas enter coal collector 7 and carries out gas solid separation.Coal collector 7 isolated coal dusts fall into fine coal storehouse 8 and send into powder feeding pipes 12 via machine supplying powder 10 by air and powder mixer 11 again, are sent to burner 13.
The weary gas of coal collector 7 weary gas outlet outputs is sent in the weary gas waste-heat recovery device 25 via blast pipe road 24 by weary gas blower fan 9, and by the heating to refrigerant, weary gas is tentatively cooled off.Cooled weary pneumatic transmission is gone into to lack air cooling and is coagulated in the retracting device 26, spray through shower nozzle 7 and reclaim recirculated water and the cold water carried unit 33 by water, weary gas is fully cooled off and be condensed into water, water in the weary gas is obtained a large amount of recovery, weary gas is after being cooled and water reclaims, and saturated wet flue gas is discharged by gas vent and is sent to desulfurizing tower 1 discharging.
The utility model one of ordinary skill in the art be appreciated that; the above embodiment of the utility model only is one of preferred embodiment of the present utility model; be the length restriction; here can not all embodiments of particularize; any enforcement that can embody the utility model claim technical scheme is all in protection domain of the present utility model.
It should be noted that; above content is to further describing that the utility model is done in conjunction with concrete embodiment; can not assert that the specific embodiment of the present utility model only limits to this; under the guidance of above-described embodiment; those skilled in the art can carry out various improvement and distortion on the basis of above-described embodiment, and these improvement or distortion drop in the protection domain of the present utility model.
Claims (6)
1. one kind high sodium coal takes off sodium upgrading fan powder-grinding and water recovery association circulating power generation system, described cycle generating system comprises drying tube, coal pulverizer, coal dust classifier, coal collector, fine coal storehouse, air and powder mixer and the boiler of serial connection connection successively at least, also comprises mixing chamber and the steam turbine that is connected to described boiler; The gas outlet of described mixing chamber is communicated with described drying tube, and the air inlet of described mixing chamber is communicated with the flue gas of described boiler and takes out mouth, and the air inlet of described coal pulverizer is communicated with described smoke duster via booster fan; It is characterized in that described cycle generating system also comprises:
Coagulate retracting device for the weary air cooling that water at low temperature is generated high-temperature water, spray chamber with sealing, the air inlet that forms cold water inlet, warm water outlet on this spray chamber and be communicated with described coal collector exhaust outlet, and be provided with the shower nozzle that is communicated with described cold water inlet in this spray chamber;
The raw coal that is used for the high sodium raw coal of washing takes off the sodium device, and the water inlet that has high sodium raw coal charging aperture, discharging opening and be communicated with described warm water outlet also is provided with steam-heating pipe and washing chamber for the heating coal-water mixture; The import of described steam-heating pipe is communicated with the extraction opening of described steam turbine, and the outlet of described steam-heating pipe is connected to described boiler through drainage pump;
Being used for will be from taking off of coming out of the described discharging opening moisture content of coal that the sodium coal separates with the waste water that is dissolved with alkali metal from device, and described moisture content of coal connects described drying tube from the coal outlet of device by failing device for coal.
2. a kind of high sodium coal as claimed in claim 1 takes off sodium upgrading fan powder-grinding and water recovery association circulating power generation system, it is characterized in that: described coal collector and described weary air cooling are coagulated and also are provided with weary gas waste-heat recovery device between the retracting device, the entrance of the primary side of described weary gas waste-heat recovery device is communicated with described coal collector by blower fan, the primary side outlet is coagulated retracting device with described weary air cooling and is communicated with, and forms the refrigerant flow path in the secondary side of described weary gas waste-heat recovery device.
3. a kind of high sodium coal as claimed in claim 1 takes off sodium upgrading fan powder-grinding and water recovery association circulating power generation system, it is characterized in that: described cycle generating system also comprises heat-energy recovering apparatus, the primary side entrance of this heat-energy recovering apparatus is communicated with the wastewater outlet of described moisture content of coal from device, forms the refrigerant flow path in its secondary side.
4. a kind of high sodium coal as claimed in claim 3 takes off sodium upgrading fan powder-grinding and water recovery association circulating power generation system, it is characterized in that: described cycle generating system also comprises the wastewater treatment equipment of handling for to the described waste water after separating, described wastewater treatment equipment has waterwater entrance, circulating water outlet and sodium potassium concentrated solution outlet, described waterwater entrance is communicated with the primary side outlet of described heat-energy recovering apparatus, and described circulating water outlet is connected to the cold water inlet that retracting device is coagulated in described weary air cooling.
5. a kind of high sodium coal as claimed in claim 4 takes off sodium upgrading fan powder-grinding and water recovery association circulating power generation system, it is characterized in that: also be provided with air preheater in the described boiler, the air inlet of described air preheater is in communication with the outside by pressure fan, the air outlet of described air preheater is communicated with the coal burner of described boiler by secondary wind bellows, and is communicated with described air and powder mixer by booster fan.
6. a kind of high sodium coal as claimed in claim 5 takes off sodium upgrading fan powder-grinding and water recovery association circulating power generation system, it is characterized in that: described mixing chamber have with described boiler flue in hot cigarette take out first air inlet that is communicated with of mouth, and take out mouthful second air inlet that is communicated with the cold smoke in the described boiler flue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201244042U CN203116061U (en) | 2013-03-18 | 2013-03-18 | High sodium coal sodium-removal quality-improving fan-milling powder-processing and water recovery circle power generation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201244042U CN203116061U (en) | 2013-03-18 | 2013-03-18 | High sodium coal sodium-removal quality-improving fan-milling powder-processing and water recovery circle power generation system |
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| CN203116061U true CN203116061U (en) | 2013-08-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148495A (en) * | 2013-03-18 | 2013-06-12 | 施大钟 | High-sodium coal sodium removal, quality improvement fan mill pulverization and water recovery combined cycle power generation system |
| CN104235817A (en) * | 2014-09-30 | 2014-12-24 | 上海援梦电力能源科技咨询中心 | Pulverizing coal and sludge co-combustion environment-friendly power generation system provided with fan mill and air swept mill |
-
2013
- 2013-03-18 CN CN2013201244042U patent/CN203116061U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148495A (en) * | 2013-03-18 | 2013-06-12 | 施大钟 | High-sodium coal sodium removal, quality improvement fan mill pulverization and water recovery combined cycle power generation system |
| CN103148495B (en) * | 2013-03-18 | 2016-01-13 | 上海机易电站设备有限公司 | High sodium coal takes off sodium upgrading fan mill powder process and Water Sproading association circulating power generation system |
| CN104235817A (en) * | 2014-09-30 | 2014-12-24 | 上海援梦电力能源科技咨询中心 | Pulverizing coal and sludge co-combustion environment-friendly power generation system provided with fan mill and air swept mill |
| CN104235817B (en) * | 2014-09-30 | 2016-04-06 | 上海援梦电力能源科技咨询中心 | The coal of fan mill and air swept mill powder process and the green electricity generation system of mud multifuel combustion |
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