CN103148495A - High-sodium coal sodium removal, quality improvement fan mill pulverization and water recovery combined cycle power generation system - Google Patents
High-sodium coal sodium removal, quality improvement fan mill pulverization and water recovery combined cycle power generation system Download PDFInfo
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Abstract
The invention relates to a high-sodium coal sodium removal, quality improvement fan mill pulverization and water recovery combined cycle power generation system, which at least comprises a drying pipe, a coal mill, a pulverized coal separator, a pulverized collector, a pulverized coal bunker, an air and pulverized coal mixer and a boiler which are sequentially and serially connected. The system additionally comprises a mixing chamber, a steam turbine, and a steam exhaust waste heat recovery device, a steam exhaust condensation and recovery device, a raw coal sodium removal device, a separation device and a water treatment unit which are sequentially connected. The system has the advantages that the content of alkali metals in raw coal is reduced, the problems of furnace coking, heating surface contamination and corrosion and the like caused to a high-sodium-coal-fired power generator set are greatly improved or fundamentally solved, the system is effective and applicable to quality improvement treatment of East Junggar coal and other high-sodium, high-water-content and poor-quality coal, the process is simple, the operation safety is high, the investment is small, the energy is saved, the environment is protected, the goal of circular economy is realized, and the system not only can be used for supplying high-quality clean coal, but also can be used for high-sodium-coal-fired pithead power generator sets to realize coal and electricity co-production.
Description
Technical field
The invention belongs to the coal power generation technical field, relate to high sodium coal power generation technology, say with having, relate to a kind of high sodium coal and take off sodium upgrading fan mill powder process and water recovery association circulating power generation system.
Background technology
High sodium coal refers to the higher special coal of class of alkali metal compound composition in coal.In all kinds of alkali metal compounds, generally in the majority with sodium compound, therefore be referred to as " high sodium coal ".At present, the high sodium coal of China mainly concentrates on the accurate eastern coalfield of Junggar Basin, Xinjiang, china 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, standard eastern coalfield just can whole nation use 100 years.Abundant and the strip mining transformation cost is low due to resources reserve, accurate eastern coalfield has become the hot zones of coal in China industry new round investment.
Accurate eastern coal belongs to the natural Filter Tuber For Clean Coal of high-quality of special low ash content, special low-sulfur, high heating value (high calorific power), low metamorphic grade.Be no matter as generating or be used for doing the raw material of Coal Chemical Industry, be all 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: higher moisture; Medium calorific capacity; Easily catch fire, easy to burn out; Strong coking; High basic metal content, strong contamination.At present, strong coking has proposed huge challenge with strong contamination to the design and operation that fires accurate eastern coal utility boiler, the result of trial operation of low capacity unit shows, when entirely firing accurate eastern coal, to stain problem very serious for boiler slagging and heating surface, and boiler can't move for a long time.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, aim at so eastern coal use amount very limited, 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 (Al2O3) etc. as adopting, can adjust the ash fusion point of stove internal combustion, can adopt accurate eastern high sodium coal to burn in boiler more, also can play certain contamination that improves boiler and the problem of slagging scorification, but increased simultaneously the effect of attrition boiler service life of boiler and reduced coal-fired calorific capacity, this makes the operating cost that must increase again construction investment and power plant.
Therefore, how to reduce the alkali metal content in accurate eastern coal, safe and economical boiler operation is over a long time guaranteed in Anti-slagging, contamination and corrosion, being electricity power enterprise and the unavoidable problem of other industry that uses accurate eastern coal, is also 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 milling pulverization system at the pulverized coal preparation system for the large-sized boiler of higher moisture coal.Be by brown coal drying in this pulverized coal preparation system, the evaporation of the water in brown coal is become weary gas, then grind brown coal and become coal dust, send in the lump coal dust and weary gas to hearth combustion simultaneously, then will enter in atmosphere in the lump with chimney.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.
For 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 recovery warehouse formula fan mill pulverized coal carried by hot air pulverized coal preparation system " before the applicant.this system comprises boiler, is connected in series successively run coal bin, descending drying tube, blower mill, the mill separator that is communicated with, pulverized coal distributor, described coal dust classifier is communicated with the burner of boiler again, also comprise mixing chamber, this mixing chamber first air inlet and the second air inlet are communicated with respectively smoking mouth and the cold smoke blower fan of boiler, 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 successively weary gas separating device between described mill separator and pulverized coal distributor, the fine coal storehouse, machine supplying powder and coal, pulverulent fuel mixer, described weary gas separating device top has weary gas outlet, this weary gas outlet is 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, 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, can make temperature rising in stove, help 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 present invention sends dried brown coal into burner with hot blast, and one side can suitably improve the outlet temperature after coal pulverizer, can significantly improve like this flammability of fuel, the boiler low load stable combustion property enhancement has enough hot-airs 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 said structure is processed, and how to utilize heat energy and the moisture that contains in 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.
Summary of the invention
The purpose of the embodiment of the present invention is the deficiency for technology in prior art, propose a kind of high sodium coal and take off sodium upgrading fan mill powder process and water recovery association circulating power generation system, the take off sodium and weary gas energy recovery and water that mainly solve in the high sodium coal power generation of higher moisture technology reclaim problem, the heat energy of recovery can be used for taking off the sodium processing simultaneously, has benefit energy-conservation, that fall originally, improve economy.
In order to reach the foregoing invention purpose, a kind of high sodium coal that the present invention proposes takes off sodium upgrading fan mill powder process 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 mill powder process and water reclaims association circulating power generation system, described cycle generating system comprises successively drying tube that serial connection is communicated with, coal pulverizer, coal dust classifier, coal collector, fine coal storehouse, air and powder mixer and boiler at least, also comprises mixing chamber and is connected to the steam turbine of 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:
Be used for water at low temperature is generated the solidifying retracting device of weary air cooling of 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;
Take off the sodium device for the raw coal of washing high sodium raw coal, 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 for the steam-heating pipe that heats coal-water mixture and washes the chamber; 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;
Be used for will from described discharging opening out take off the coal-water separating device that the sodium coal separates with the waste water that is dissolved with alkali metal, the coal outlet of described coal-water separating device is by the described drying tube of defeated device for coal connection.
Also be provided with weary gas waste-heat recovery device between the solidifying retracting device of described coal collector and described weary air cooling, 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 communicated with the solidifying retracting device of described weary air cooling, 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 coal-water separating device, forms the refrigerant flow path in its secondary side.
Described cycle generating system also comprises the wastewater treatment equipment of processing 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 of the solidifying retracting device of described weary air cooling.
Also be provided with air preheater in 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 air bellow, 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 described boiler flue.
A kind of high sodium coal proposed by the invention takes off sodium upgrading fan mill powder process and water reclaims association circulating power generation system, has following characteristics:
1, the raw coal that high basic metal content is high is under certain raw coal diameter, under the effect of the wash solution of uniform temperature and pressure, destroyed the stability of former texture of coal, make the alkali metal in raw coal that migration and dissolving occur, thereby reduced the sodium in the coal, ash, mercury, sulphur, etc. element, the quality technique 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 the steam condensation used heat of coal-burning power plant and to weary gas tow taste heat, realize thus utilizing used heat to wash ash and taken off sodium, had significant 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 weary gas, at last by reduce temperature to below water dew point so that moisture is fully extracted.
4, system's output takes off the sodium coal by after drying and upgrading, having become the high-quality Filter Tuber For Clean Coal can be directly used in as industrial chemicals or be used for the burning coal powder generating set, fire slagging that high sodium coal power generation unit faces and heating surface contamination problem and improved alkali-metal etching problem to boiler body thereby significantly improve or solved at all, solved simultaneously the sodium vapor separation problem in the Coal Chemical Industry gasification.
5, the liquid after coal liquid separates enters wastewater treatment equipment, and isolated sodium potassium concentrate is recyclable for alkaline and potash fertilizer production.
6, with the water resource that can reclaim in a large number after weary air cooling but in coal, and can be used as system water supplement.
7, the coal after purifying is carried out high temperature flue gas drying and process, the moisture content that removes in coal improves the quality of coal greatly.
Therefore, high sodium coal of the present invention takes off sodium upgrading fan mill powder process and water and reclaims association circulating power generation system and realized alkali metal content in the high sodium coal of effective reduction, has advantages of that technique 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 present invention will become apparent and easily understand.
Fig. 1 is the overall structure schematic diagram of embodiment of the present invention brown coal drying coal burning system.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail, so that technical staff's of the same trade understanding:
As shown in Figure 1, label represents 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; The weary gas blower fan of 9-; 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; The 22-high-temperature furnace smoke pipeline; The 23-pressure fan; 24-blast pipe road; The weary gas waste-heat recovery device of 25-; Retracting device is coagulated in the weary air cooling of 26-; 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; The defeated device for coal of 35-; The 36-steam turbine; The 37-drain water piping; The 38-pump-line; 39-boiler main jet chimney; 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 pipeline; The 46-secondary air bellow; The 47-booster fan.
Provide a kind of high sodium coal to take off sodium upgrading fan mill powder process 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 afterwards coal dust, again breeze airflow is carried out gas solid separation, after separating, coal dust is sent into the stove internal combustion by warm air, and the weary gas of high-moisture enters and takes off sodium component and fully reclaim heat energy and moisture, simultaneously, the same heat energy source as taking off sodium component of the steam turbine steam used heat of electricity generation system.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 collectors 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 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 the first air inlet that mouth 15 is communicated to mixing chamber 21, and cold smoke is taken out the 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 blower mill 4 by cold smoke pipeline 20 again.
The gas outlet of mixing chamber 21 is communicated in descending drying tube 3 by high-temperature furnace smoke pipeline 22.
Boiler 14 is by in boiler main jet chimney 39 access steam turbines 36, steam turbine 36 becomes mechanical power with the power conversion of steam, steam after being utilized is divided into two-way, one the tunnel sends into raw coal via bleeding point, pump-line 38 takes off in sodium device 29, another road enters in feed pump 42, and is sent back in boiler by condenser 40, condensate pump 41.
In addition, cycle generating system comprises that also weary gas waste-heat recovery device 25, the solidifying retracting device 26 of weary air cooling, raw coal take 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 heat in weary gas is delivered to heat exchanger in 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 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 primary side outlet is communicated with blast pipe road 24, and the primary side outlet accesses weary air cooling and coagulates in retracting device 26.
The effect of the solidifying retracting device 26 of weary air cooling has two, and one is fully to reclaim the heat of weary gas, and another is the moisture that fully reclaims in weary gas.in the present embodiment, two kinds of above-mentioned energy recovery realize by spraying cooling, the solidifying retracting device 26 of weary air cooling has the spray chamber of sealing, this spray forms cold water inlet on the chamber, warm water outlet and the air inlet that is communicated with weary gas waste-heat recovery device 25 primary side outlets, and this spray is provided with the shower nozzle 27 that is communicated with described cold water inlet in the chamber, the cold water that is entered by cold water inlet sprays in spraying the 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 water dew point, so that moisture is fully extracted, and flowed out by the warm water outlet, by weary gas after being cooled and water reclaim, there is gas vent to discharge and is sent to desulfurizing tower 1.
Raw coal takes off sodium device 29 and is used for washing high sodium raw coal, has for the high sodium raw coal in the washing access to plant, makes the alkali metal washing soluble in water chamber in 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 carries out next circulation by feed pump 42 in boiler together with being sent back to by condenser 40 solidifying water out.Described washing chamber has water inlet, high sodium raw coal charging aperture and discharging opening.Raw coal takes off sodium device 29 water inlets and is communicated with the warm water outlet of the solidifying retracting device 26 of described weary air cooling by warm water pipeline 31, high sodium raw coal charging aperture is used for sending into raw coal to washing in the chamber, and is discharged by discharging opening by the product after washing (taking off sodium coal and the waste water that is dissolved with alkali metal).
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 that in the secondary side of heat-energy recovering apparatus 2, formation is circulated for refrigerant.
Unit for treating water 33 is used for the 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 is admitted in cold water pipes 28, and enters solidifying retracting device 26 recyclings of weary air cooling.The sodium potassium concentrate of discharging in sodium potassium concentrated solution outlet can be sent in chemical plant 34, reclaims to be used for alkaline and potash fertilizer production.
Be exactly more than that high sodium coal of the present invention takes off sodium upgrading fan mill powder process and water recovery association circulating power generation system, its specific works mode is as follows:
being delivered into raw coal by the solidifying retracting device 26 heating warm water of weary air cooling via warm water pipeline 31 takes off in sodium device 29, the while raw coal also is transported into raw coal and takes off in 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 pore that migration and dissolving occur rapidly, make a large amount of alkali metals in raw coal comprise sodium, potassium, mercury, sulphur, ashes etc. migrate in a large number or are dissolved in 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 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 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 carry out next circulation by feed pump 42 in boiler together with being sent back to by condenser 40 solidifying water out.
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 high-temperature flue gas.High-temperature flue gas the hot cigarette on boiler furnace top take out mouthfuls 15 and the cold smoke of boiler 14 afterbodys take out mouthfuls 43 and extract, both be mixed at mixing chamber 21 and have certain just drier of gentle flow, drier is delivered to descending drying tube 3 by high-temperature furnace smoke pipeline 22.
After raw coal mixes in descending drying tube 3 with above-mentioned high temperature drying agent and completes 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.The isolated coal dust of coal collector 7 falls into fine coal storehouse 8 and sends into powder feeding pipes 12 via machine supplying powder 10 by air and powder mixer 11 again, is sent to burner 13.
The weary gas of the weary gas of coal collector 7 outlet output is sent in 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 by tentatively cooling.Cooled weary pneumatic transmission enters in the solidifying retracting device 26 of weary air cooling, and sprayed through shower nozzle 7 by recirculated water and the cold water that water recovery unit 33 is carried, make weary gas fully cooling and be condensed into water, water in 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.
One of ordinary skill in the art of the present invention are appreciated that; the above embodiment of the present invention is only one of the preferred embodiments of the present invention; be the length restriction; here can not all embodiments of particularize; any enforcement that can embody claim technical scheme of the present invention is all in protection scope of the present invention.
It should be noted that; above content is in conjunction with concrete embodiment further description made for the present invention; can not assert that the specific embodiment of the present invention 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 protection scope of the present invention.
Claims (6)
1. one kind high sodium coal takes off sodium upgrading fan mill powder process and water recovery association circulating power generation system, described cycle generating system comprises successively drying tube that serial connection is communicated with, coal pulverizer, coal dust classifier, coal collector, fine coal storehouse, air and powder mixer and boiler at least, also comprises mixing chamber and is connected to the steam turbine of 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:
Be used for water at low temperature is generated the solidifying retracting device of weary air cooling of 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;
Take off the sodium device for the raw coal of washing high sodium raw coal, 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 for the steam-heating pipe that heats coal-water mixture and washes the chamber; 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;
Be used for will from described discharging opening out take off the coal-water separating device that the sodium coal separates with the waste water that is dissolved with alkali metal, the coal outlet of described coal-water separating device is by the described drying tube of defeated device for coal connection.
2. a kind of high sodium coal as claimed in claim 1 takes off sodium upgrading fan mill powder process and water recovery association circulating power generation system, it is characterized in that: also be provided with weary gas waste-heat recovery device between the solidifying retracting device of described coal collector and described weary air cooling, 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 communicated with the solidifying retracting device of described weary air cooling, 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 mill powder process 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 coal-water separating 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 mill powder process and water recovery association circulating power generation system, it is characterized in that: described cycle generating system also comprises the wastewater treatment equipment of processing 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 of the solidifying retracting device of described weary air cooling.
5. a kind of high sodium coal as claimed in claim 4 takes off sodium upgrading fan mill powder process and water recovery association circulating power generation system, it is characterized in that: also be provided with air preheater in 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 air bellow, 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 mill powder process 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 described boiler flue.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952164A (en) * | 2014-04-29 | 2014-07-30 | 华电电力科学研究院 | Burning power generation utilization method of high-sodium-content coal |
| CN104132362A (en) * | 2014-07-31 | 2014-11-05 | 上海理工大学 | Open powder making steam warm air type boiler unit and power generation system thereof |
| CN104132364A (en) * | 2014-07-31 | 2014-11-05 | 上海理工大学 | Open powder making steam warm air type boiler unit and power generation system thereof |
| CN104132359A (en) * | 2014-07-31 | 2014-11-05 | 上海理工大学 | Open powder making steam warm air type boiler unit and power generation system thereof |
| CN104197355A (en) * | 2014-08-19 | 2014-12-10 | 上海理工大学 | Open powder processing waste steam heater type boiler unit |
| CN104214758A (en) * | 2014-09-30 | 2014-12-17 | 上海援梦电力能源科技咨询中心 | Fan mill and steel ball mill-pulverized coal and sludge mixed burning green power generation system |
| CN105627343A (en) * | 2014-10-31 | 2016-06-01 | 烟台龙源电力技术股份有限公司 | Powder separating and feeding device of ignition system and boiler ignition system |
| CN105865188A (en) * | 2016-04-08 | 2016-08-17 | 上海理工大学 | Tangent circle gas inlet furnace smoke mixing chamber and lignite boiler comprising same |
| CN106287782A (en) * | 2016-08-04 | 2017-01-04 | 中国神华能源股份有限公司 | The pretreatment system of high sodium coal |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202482293U (en) * | 2012-02-23 | 2012-10-10 | 上海机易电站设备有限公司 | High-sodium-coal sodium removal purification circulation system |
| CN102798133A (en) * | 2011-05-27 | 2012-11-28 | 中国电力工程顾问集团东北电力设计院 | Fan grinding hot blast powder feeding and pulverizing system utilizing flue gas drying and water recycling |
| CN102840595A (en) * | 2011-06-20 | 2012-12-26 | 上海机易电站设备有限公司 | Fume pre-dried lignite medium speed mill straight-blowing powder-making system |
| CN102889606A (en) * | 2011-07-20 | 2013-01-23 | 上海机易电站设备有限公司 | Direct fired pulverizing system of smoke pre-drying lignite steel ball mill |
| CN203116061U (en) * | 2013-03-18 | 2013-08-07 | 施大钟 | High sodium coal sodium-removal quality-improving fan-milling powder-processing and water recovery circle power generation system |
-
2013
- 2013-03-18 CN CN201310087016.6A patent/CN103148495B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798133A (en) * | 2011-05-27 | 2012-11-28 | 中国电力工程顾问集团东北电力设计院 | Fan grinding hot blast powder feeding and pulverizing system utilizing flue gas drying and water recycling |
| CN102840595A (en) * | 2011-06-20 | 2012-12-26 | 上海机易电站设备有限公司 | Fume pre-dried lignite medium speed mill straight-blowing powder-making system |
| CN102889606A (en) * | 2011-07-20 | 2013-01-23 | 上海机易电站设备有限公司 | Direct fired pulverizing system of smoke pre-drying lignite steel ball mill |
| CN202482293U (en) * | 2012-02-23 | 2012-10-10 | 上海机易电站设备有限公司 | High-sodium-coal sodium removal purification circulation system |
| CN203116061U (en) * | 2013-03-18 | 2013-08-07 | 施大钟 | High sodium coal sodium-removal quality-improving fan-milling powder-processing and water recovery circle power generation system |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952164A (en) * | 2014-04-29 | 2014-07-30 | 华电电力科学研究院 | Burning power generation utilization method of high-sodium-content coal |
| CN103952164B (en) * | 2014-04-29 | 2016-01-20 | 华电电力科学研究院 | A kind of high sodium burning of coal gas-to electricity method |
| CN104132359A (en) * | 2014-07-31 | 2014-11-05 | 上海理工大学 | Open powder making steam warm air type boiler unit and power generation system thereof |
| CN104132364A (en) * | 2014-07-31 | 2014-11-05 | 上海理工大学 | Open powder making steam warm air type boiler unit and power generation system thereof |
| CN104132362A (en) * | 2014-07-31 | 2014-11-05 | 上海理工大学 | Open powder making steam warm air type boiler unit and power generation system thereof |
| CN104197355A (en) * | 2014-08-19 | 2014-12-10 | 上海理工大学 | Open powder processing waste steam heater type boiler unit |
| CN104197355B (en) * | 2014-08-19 | 2016-06-08 | 上海理工大学 | The open weary gas heating type boiler controller system of powder process |
| CN104214758A (en) * | 2014-09-30 | 2014-12-17 | 上海援梦电力能源科技咨询中心 | Fan mill and steel ball mill-pulverized coal and sludge mixed burning green power generation system |
| CN104214758B (en) * | 2014-09-30 | 2016-08-17 | 上海援梦电力能源科技咨询中心 | Fan mill and the coal of Ball Mill powder process and mud multifuel combustion green power generation system |
| CN105627343A (en) * | 2014-10-31 | 2016-06-01 | 烟台龙源电力技术股份有限公司 | Powder separating and feeding device of ignition system and boiler ignition system |
| CN105627343B (en) * | 2014-10-31 | 2017-12-26 | 烟台龙源电力技术股份有限公司 | Ignition system divides powder dust feeder and ignition system for boiler |
| CN105865188A (en) * | 2016-04-08 | 2016-08-17 | 上海理工大学 | Tangent circle gas inlet furnace smoke mixing chamber and lignite boiler comprising same |
| CN105865188B (en) * | 2016-04-08 | 2019-01-01 | 上海理工大学 | Circle of contact air inlet furnace cigarette mixing chamber and the boiler using brown coal including it |
| CN106287782A (en) * | 2016-08-04 | 2017-01-04 | 中国神华能源股份有限公司 | The pretreatment system of high sodium coal |
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