CN203613162U - Sodium removing and quality improving device for high-sodium coal - Google Patents
Sodium removing and quality improving device for high-sodium coal Download PDFInfo
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- CN203613162U CN203613162U CN201320614025.1U CN201320614025U CN203613162U CN 203613162 U CN203613162 U CN 203613162U CN 201320614025 U CN201320614025 U CN 201320614025U CN 203613162 U CN203613162 U CN 203613162U
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Abstract
A sodium removing and quality improving device for high-sodium coal comprises a conveying part, a sodium removing part, a heating part, a coal and water separating part and a cooling part, wherein the conveying part is provided with coal feeding locks and coal discharging locks, the coal feeding locks are used for feeding high-sodium raw coal into the sodium removing part, and the coal discharging locks are used for discharging the high-sodium raw coal out of the sodium removing part; the heating part conveys high-temperature water to the sodium removing part from bottom to top in a reverse flow manner; the sodium removing part is provided with a fire grate adopting a four-layer structure, stirring blades are arranged on the top layer and used for uniformly mixing the high-sodium raw coal entering the sodium removing part with the high-temperature water, and a high-temperature coal and water mixture is obtained; the cooling part provides cold water to cool the high-temperature coal and water mixture discharged from the coal removing part, and a cooled coal and water mixture is obtained; the coal and water separating part separates the cooled coal and water mixture, and wastewater and coal without sodium are obtained; the sodium removing part is further provided with a channel connected with the coal and water separating part and used for feeding the high-temperature water located above the high-temperature coal and water mixture into the coal and water separating part; and the sodium removing part is provided with a filter screen arranged below the channel and used for preventing coal in the high-temperature coal and water mixture from entering the channel.
Description
Technical field
The utility model is specifically related to one high sodium raw coal is taken off to sodium, obtains the de-sodium device for improving quality of high sodium coal of de-sodium coal.
Background technology
High sodium coal refers to the special coal of a class that in coal, alkali metal compound composition is higher.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 coalfield, standard east 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 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, an eastern coalfield of standard just can be used 100 years in the whole nation.Because resources reserve is abundant and strip mining transformation cost is low, oneself becomes the hot zones that a coal in China industry new round is invested accurate eastern coalfield.
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 (gross calorific value), low metamorphic grade.Being no matter as generating or being used for doing the raw material of Coal Chemical Industry, is all the lustration raw material of low pollution, low emission, can effectively save treatment of wastes produced expense.Good basic substance has been laid in be all the as the criterion coal electricity in east area and the development of Coal Chemical Industry of these superior natural condition.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 electricity Dong send " topmost energy safeguard base.
High sodium coal refers to the special coal of a class that in coal, alkali metal compound composition is higher.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 coalfield, standard east 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 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, an eastern coalfield of standard just can be used 100 years in the whole nation.Because resources reserve is abundant and strip mining transformation cost is low, oneself becomes the hot zones that a coal in China industry new round is invested accurate eastern coalfield.
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 (gross calorific value), low metamorphic grade.Being no matter as generating or being used for doing the raw material of Coal Chemical Industry, is all the lustration raw material of low pollution, low emission, can effectively save treatment of wastes produced expense.Good basic substance has been laid in be all the as the criterion coal electricity in east area and the development of Coal Chemical Industry of these superior natural condition.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 electricity Dong send " topmost energy safeguard base.
On the whole, the ature of coal in area, accurate east, Xinjiang has following characteristics: higher moisture, and medium calorific value, easily catches fire, easy to burn out, strong coking, high basic metal, stains by force.At high temperature, in high sodium coal utilization, the coal ash of the low melting point ash that very easily (under hot environment) is melting with the slag particle of liquid state or semi liquid state is bonded on heating surface or on furnace wall, forms one deck ash bed closely, causes the equipment slagging scorification such as boiler; These active sodium components that contain can be condensed on the equipment heat-transfer surface tube walls such as boiler, and react the material such as sodium sulfate generating with sulfurous gas, sulphur trioxide etc. in flue gas and form closely knit tack coat, this adhesive linkage reacts and causes high temperature corrosion with metal pipe-wall on the one hand, and the ash particle that can catch on the other hand in flue gas causes high temperature bond dust stratification; Therefore, actively in high sodium coal can cause flying dust viscosity high containing sodium component, easily be caught by closely knit contamination tack coat, thus on heat-transfer surface formation of deposits dust stratification, be the major cause that causes heat-transfer surface contamination, slagging scorification and dust stratification.In hot environment, utilize high sodium coal can cause the problems such as heat-transfer surface contamination, slagging scorification and dust stratification just because of equipment such as boilers, cause utilizing in hot environment the equipment such as boiler of high sodium coal to have to change heat-transfer surface after short period of time operation, cause serious financial loss.
At present, electricity consumption and electricity power enterprise build the combustion system in power station in area, accurate east, can only adopt the accurate eastern coal in locality of 20-30% not contain after sodium coal is not mixed and mix burning with other, so just seriously limit the utilization of aiming at eastern coal, local power plant buys high-quality fire coal from elsewhere again simultaneously, both increased the cost of electricity-generating of electricity power enterprise, and aimed at again the exploitation in eastern coalfield and the construction in power supply base has brought very large difficulty, the advantage of aiming at eastern coal is difficult to be fully utilized.
Mainly contain to the equipment such as boiler are carried out appropriate design and operation, mix and burn the low sodium coal of high-quality and additive etc. for the control techniques of the problems referred to above at present.But due to not enough to high sodium coal combustion research, the equipment designs such as the high sodium coal burning boiler that burns do not obtain important breakthrough.And in high sodium coal combustion process, add the silicon-dioxide such as kaolin, additive that alumina content is high, sodium in additive and gas phase is reacted, although can alleviate contamination, but the additive that this method is used is solid, exist efficiency low, greatly increase the shortcomings such as ash load, therefore do not obtain large-scale application yet.
Trace it to its cause, the problem of above existence all with coal ash in alkali metal content higher closely related.And when how reducing high sodium coal and enter stove alkali metal content, Anti-slagging, contamination and corrosion, improve accurate eastern burning of coal quality, guarantees research and the still Shortcomings for the treatment of technology of safe and economical boiler long-time running.
Utility model content
In order to address the above problem, the utility model provides a kind of high sodium raw coal has been taken off to sodium, obtain the de-sodium device for improving quality of high sodium coal of de-sodium coal, its technique is simple, continuity good, operating safety, investment are little, not only reduce the alkali metal containing amount into stove coal institute, slagging and heating surface contamination problem that the high sodium coal power generation unit of combustion faces can be significantly improved, solve, coal power station steam used heat can also be fully effectively utilized, efficient energy-saving.
In order to achieve the above object, the utility model has adopted following technical scheme:
One takes off sodium to high sodium raw coal, obtains the de-sodium device for improving quality of high sodium coal of de-sodium coal, it is characterized in that, comprises: transport portion, take off sodium portion, heating part, moisture content of coal are from portion and cooling end, the portion of transporting has upper coal lock and lower coal lock, respectively high sodium raw coal is sent into and is sent the sodium portion that takes off, heating part is to the de-sodium portion high-temperature water of adverse current conveying from the bottom to top, take off sodium portion and there is fire grate, fire grate is four-layer structure, top layer is agitating vane, for the high sodium raw coal that enters de-sodium portion is evenly mixed with high-temperature water, obtain high-temperature coal water mixture, cooling end provides cold water, the cooling high-temperature coal water mixture of sending from taking off sodium portion, obtain cooling coal-water mixture, moisture content of coal is from part from cooling coal-water mixture, obtain waste water and de-sodium coal, de-sodium portion also has and is arranged on the passage being connected from portion with moisture content of coal, the high-temperature water on the upper strata that is positioned at high-temperature coal water mixture is sent into moisture content of coal from portion, take off sodium portion and also there is the filter screen that is arranged on passage below, for preventing the coal admission passage of high-temperature coal water mixture.
Further, high sodium coal of the present utility model takes off sodium device for improving quality, can also have such feature: take off in sodium portion and also have the coal sparger that angle bar forms, make high sodium raw coal be locked in and take off even whereabouts arrival fire grate in sodium portion through upper coal.
Further, high sodium coal of the present utility model takes off sodium device for improving quality, can also have such feature: upper coal lock is two, alternately running in parallel, and lower coal lock is two, alternately running in parallel.
Further, high sodium coal of the present utility model takes off sodium device for improving quality, can also have such feature: cooling end has cooling water jecket and entrance of cooling water, and cold water enters cooling water jecket from entrance of cooling water, carries out cooling to coal-water mixture.
Further, high sodium coal of the present utility model takes off sodium device for improving quality, can also have such feature: the de-sodium device for improving quality of high sodium coal also has wastewater treatment portion, and waste water is processed, and obtains processing water and sodium potassium concentrated solution, and processing water enters boiler and recycles.
Further, high sodium coal of the present utility model takes off sodium device for improving quality, can also have such feature: the temperature and pressure taking off in sodium portion keeps certain, and pressure is the water saturation vapour pressure corresponding with temperature.
In addition, high sodium coal of the present utility model takes off sodium device for improving quality, can also have such feature: the de-sodium device for improving quality of high sodium coal also has water circulating pump and water supplement port, is connected, for keeping the skin wet with boiler.
The effect of utility model and effect
The de-sodium device for improving quality of high sodium coal relating to according to the utility model, wash the principle of raw coal by high temperature, high-temperature high pressure water adverse current is delivered into the sodium portion that takes off, make the contact of water coal more abundant, high sodium raw coal and high-temperature water are formed to coal-water mixture, basic metal in high sodium raw coal is dissolved in high-temperature water to be separated again, reduce the alkali metal content in high sodium raw coal, its technique is simple, and continuity is good, operating safety, invest little, the needed thermal source overwhelming majority can, from the vapor condenses used heat of coal-burning power plant, be utilized vapor condenses used heat, de-sodium better effects if.The de-sodium coal finally obtaining both can be directly used in coal fired power generation unit, thereby significantly improved or solve slagging and heating surface contamination problem that the high sodium coal power generation unit of combustion faces; Also can be used as sale coal, thereby improve coal price and expand sales range simultaneously; The sodium potassium concentrated solution obtaining is recyclable for alkaline and potash fertilizer production.In addition, install required moisturizing and both can, from external water source, also can utilize the water resources reclaiming from raw coal.
Accompanying drawing explanation
Fig. 1 is the structural representation of the de-sodium device for improving quality of high sodium coal of the present embodiment.
Embodiment
Following examples are specifically addressed the utility model by reference to the accompanying drawings.
Fig. 1 is the structural representation of the de-sodium device for improving quality of high sodium coal of the present embodiment.
The de-sodium device for improving quality of high sodium coal as shown in Figure 1, comprises: transport portion 10, take off sodium portion 11, heating part 12, moisture content of coal are from portion 13 and cooling end 14.
Transport portion 10 and have in parallel two upper coals locks 101 and two lower coals locks 102, upper coal lock 101 is sent high sodium raw coal into de-sodium portion 11, and lower coal lock 102 receives the coal-water mixture after treatment that fire grates 112 are discharged, and coal-water mixture is sent to de-sodium portion 11.Two upper coal locks 101 and two lower coal locks 102 are all taked the alternately mode of running, guarantee the continuity of charging and discharging.
Heating part 12 is boiler 121, for water at low temperature is heated into high-temperature high pressure water, and by High Temperature High Pressure water pipeline 122, high-temperature high pressure water adverse current is delivered into the sodium portion 11 that takes off, thereby the rolling that has produced coal, make the contact of water coal more abundant, in fire grate 112, each layer of flooding quantity distributes and is roughly: I layer～10%, II layer～20%, III layer～30%, IV layer～40%.De-sodium portion 11 tops are provided with the passage 20 being connected from portion 13 with moisture content of coal, the high-temperature water on the upper strata that is positioned at high-temperature coal water mixture is sent into moisture content of coal from portion 13, take off in sodium portion 11 and below passage 20, be also provided with filter screen 19, for preventing the coal admission passage 20 of high-temperature coal water mixture, reduce water cycle and taken away the loss amount of coal.
Taking off sodium portion 11 has fire grate 112 and is arranged on the coal sparger 111 of fire grate 112 tops.Coal sparger 111 makes the high sodium raw coal arrival fire grate 112 that evenly falls in de-sodium portion 11 through upper coal lock 101.Fire grate 112 is four-layer structure, and top layer is agitating vane, for the high sodium raw coal that enters de-sodium portion 11 is evenly mixed with high-temperature water, makes the alkali metal in high sodium raw coal soluble in water, obtains high-temperature coal water mixture.The multilayered structure of fire grate 112 makes the coal in high-temperature coal water mixture can steadily move successively, operating mode in stabilizing deyice.In de-sodium portion 11, maintain certain temperature and keep pressure for water saturation vapor pressure at this temperature.
Cooling end 14 has and is arranged on lower coal and locks the cooling water jecket 141 of 102 outsides and supporting entrance of cooling water 142, cold water enters cooling water jecket 141 from entrance of cooling water 142, coal-water mixture in lower coal lock 102 carries out cooling step-down, obtain cooling coal-water mixture, be delivered into coal-water separating device by the lower coal lock 102 of alternately running.
Moisture content of coal by carrying the cooling coal-water mixture of coming in to take off sodium coal and the separating of waste water that is dissolved with alkali metal, obtains waste water and de-sodium coal from portion 13.Moisture content of coal has de-sodium coal export 131 and wastewater outlet valve 132 from portion.De-sodium coal export 131 is for discharging de-sodium coal, and wastewater outlet valve 132 is discharged waste water.De-sodium coal both can be all for combustion power generation, also can be partly for combustion power generation, and all the other can be used for selling.
The de-sodium device for improving quality of high sodium coal also has the wastewater treatment portion 15 that same wastewater outlet valve 132 is connected, and for the waste water of exporting from wastewater outlet valve 132 is processed, obtains processing water and sodium potassium concentrated solution.Wastewater treatment portion 15 has the water out valve 151 of processing and sodium potassium concentrated solution outlet 152, and sodium potassium concentrated solution outlet 152 is discharged sodium potassium concentrated solution, processes 151, water out valve and is connected to boiler 121 through water circulating pump 16.Process water and be discharged from from processing water out valve 151, enter boiler 121 through water circulating pump 16 and recycle.
In the present embodiment, when in the time carrying out the de-sodium of high sodium raw coal, the high sodium raw coal after pulverizing enters coal bunker 18 by Belt Conveying, intermittently enters coal lock 101 two parallel connections that alternately operate from coal bunker 18 through coal chute, is delivered into continuously the sodium portion that takes off.
High sodium raw coal, taking off under the effect of coal sparger 111 in sodium portion 11, evenly falls to arriving the fire grate 112 of below.Under the stirring of the agitating vane of process fire grate 112 top layers, carry the high-temperature water of coming in evenly to mix with boiler 121, make the alkali metal in high sodium raw coal soluble in water, obtain high-temperature coal water mixture.Coal in high-temperature coal water mixture steadily enters lower coal lock 102 in mobile whereabouts successively through the four-layer structure of fire grate 112.
High-temperature coal water mixture in lower coal lock 102 carries out cooling step-down and obtains cooling coal-water mixture in cooling water jecket 141, is delivered into moisture content of coal from portion 13 by the lower coal lock 102 of alternately running.
Cooling coal-water mixture from taking off sodium coal and the separating of waste water that is dissolved with alkali metal in portion 13, obtains waste water and de-sodium coal at moisture content of coal.De-sodium coal is discharged from de-sodium coal export 131, and waste water is discharged from wastewater outlet valve 132.Waste water enters the wastewater treatment portion 15 being connected through wastewater outlet valve 132, treatedly obtain processing water and sodium potassium concentrated solution.Sodium potassium concentrated solution is discharged from sodium potassium concentrated solution outlet 152, processes water and is discharged from from processing water out valve 151, enters boiler 121 recycle through water circulating pump 16.
In whole device, the de-sodium coal of the sodium potassium concentrated solution of discharge and output can be taken a part of water out of, causes the loss of recirculated water, is therefore the supplementary a certain amount of water of boiler 121 by the water supplement port 17 being connected with water circulating pump 16.
The effect of embodiment and effect
The de-sodium device for improving quality of high sodium coal relating to according to the present embodiment, wash the principle of raw coal by high temperature, high-temperature high pressure water adverse current is delivered into the sodium portion that takes off, make the contact of water coal more abundant, high sodium raw coal and high-temperature water are formed to coal-water mixture, basic metal in high sodium raw coal is dissolved in high-temperature water to be separated again, reduce the alkali metal content in high sodium raw coal, its technique is simple, and continuity is good, operating safety, invest little, the needed thermal source overwhelming majority can, from the vapor condenses used heat of coal-burning power plant, be utilized vapor condenses used heat, de-sodium better effects if.The de-sodium coal finally obtaining both can be directly used in coal fired power generation unit, thereby significantly improved or solve slagging and heating surface contamination problem that the high sodium coal power generation unit of combustion faces; Also can be used as sale coal, thereby improve coal price and expand sales range simultaneously; The sodium potassium concentrated solution obtaining is recyclable for alkaline and potash fertilizer production.In addition, install required moisturizing and both can, from external water source, also can utilize the water resources reclaiming from raw coal.
Claims (6)
1. the de-sodium device for improving quality of high sodium coal, takes off sodium to high sodium raw coal, obtains de-sodium coal, it is characterized in that, comprises:
Transport portion, take off sodium portion, heating part, moisture content of coal are from portion and cooling end;
Wherein, described in the portion of transporting there is upper coal lock and lower coal lock, respectively described high sodium raw coal is sent into and is sent described de-sodium portion,
Described heating part to described de-sodium portion from the bottom to top adverse current carry high-temperature water,
Described de-sodium portion has fire grate, and described fire grate is four-layer structure, and top layer is agitating vane, for the described high sodium raw coal that enters described de-sodium portion is evenly mixed with described high-temperature water, obtains high-temperature coal water mixture,
Described cooling end provides cold water, and the cooling described high-temperature coal water mixture of sending from described de-sodium portion, obtains cooling coal-water mixture,
Described moisture content of coal, from part from described cooling coal-water mixture, obtains waste water and de-sodium coal,
Described de-sodium portion also has and is arranged on the passage being connected from portion with described moisture content of coal, and the high-temperature water on the upper strata that is positioned at described high-temperature coal water mixture is sent into described moisture content of coal from portion,
Described de-sodium portion also has the filter screen that is arranged on described passage below, for preventing that the coal of described high-temperature coal water mixture from entering described passage.
2. the de-sodium upgrading device for improving quality of high sodium coal as claimed in claim 1, is characterized in that:
Wherein, in described de-sodium portion, also there is the coal sparger that angle bar forms, make described high sodium raw coal be locked in described de-sodium portion and evenly fall to arriving described fire grate through described upper coal.
3. the de-sodium upgrading device for improving quality of high sodium coal as claimed in claim 1, is characterized in that:
Wherein, described upper coal lock is two, alternately running in parallel,
Described lower coal lock is two, alternately running in parallel.
4. the de-sodium upgrading device for improving quality of high sodium coal as claimed in claim 1, is characterized in that:
Wherein, described cooling end has cooling water jecket and entrance of cooling water, and cold water enters cooling water jecket from described entrance of cooling water, carries out cooling to described coal-water mixture.
5. the de-sodium device for improving quality of high sodium coal as claimed in claim 1, is characterized in that:
Wherein, the de-sodium device for improving quality of described high sodium coal also has wastewater treatment portion, and described waste water is processed, and obtains processing water and sodium potassium concentrated solution, and described processing water enters described heating part and recycles.
6. the de-sodium device for improving quality of high sodium coal as claimed in claim 1, is characterized in that:
Wherein, the de-sodium device for improving quality of described high sodium coal also has water supplement port, is connected, for keeping the skin wet with described heating part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320614025.1U CN203613162U (en) | 2013-09-29 | 2013-09-29 | Sodium removing and quality improving device for high-sodium coal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320614025.1U CN203613162U (en) | 2013-09-29 | 2013-09-29 | Sodium removing and quality improving device for high-sodium coal |
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| CN203613162U true CN203613162U (en) | 2014-05-28 |
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| CN201320614025.1U Expired - Fee Related CN203613162U (en) | 2013-09-29 | 2013-09-29 | Sodium removing and quality improving device for high-sodium coal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105885997A (en) * | 2016-05-10 | 2016-08-24 | 湖北宜化集团有限责任公司 | Sodium removal device for high sodium coal |
| CN106675684A (en) * | 2017-01-25 | 2017-05-17 | 辽宁工程技术大学 | Method for removing sodium from high-sodium coal |
-
2013
- 2013-09-29 CN CN201320614025.1U patent/CN203613162U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105885997A (en) * | 2016-05-10 | 2016-08-24 | 湖北宜化集团有限责任公司 | Sodium removal device for high sodium coal |
| CN106675684A (en) * | 2017-01-25 | 2017-05-17 | 辽宁工程技术大学 | Method for removing sodium from high-sodium coal |
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