CN102585867B - System for conditioning through coking charge coal humidity difference - Google Patents
System for conditioning through coking charge coal humidity difference Download PDFInfo
- Publication number
- CN102585867B CN102585867B CN201210059048.0A CN201210059048A CN102585867B CN 102585867 B CN102585867 B CN 102585867B CN 201210059048 A CN201210059048 A CN 201210059048A CN 102585867 B CN102585867 B CN 102585867B
- Authority
- CN
- China
- Prior art keywords
- coal
- damping
- fluidized bed
- bed type
- dry
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000003245 coal Substances 0.000 title claims abstract description 148
- 238000004939 coking Methods 0.000 title claims abstract description 28
- 230000003750 conditioning effect Effects 0.000 title abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 31
- 238000001035 drying Methods 0.000 claims abstract description 29
- 238000013016 damping Methods 0.000 claims description 120
- 239000007789 gas Substances 0.000 claims description 35
- 238000000034 method Methods 0.000 claims description 22
- 238000007791 dehumidification Methods 0.000 claims description 13
- 239000010881 fly ash Substances 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000002912 waste gas Substances 0.000 claims description 3
- 239000003818 cinder Substances 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 18
- 238000012546 transfer Methods 0.000 abstract description 17
- 238000005243 fluidization Methods 0.000 abstract description 16
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- 239000003546 flue gas Substances 0.000 description 16
- 229920006395 saturated elastomer Polymers 0.000 description 12
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 10
- 239000000571 coke Substances 0.000 description 9
- 230000001276 controlling effect Effects 0.000 description 8
- 230000033228 biological regulation Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 230000001105 regulatory effect Effects 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000009740 moulding (composite fabrication) Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Coke Industry (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a system for conditioning through the coking charge coal humidity difference. The system comprises an internal fluidized bed type drying and conditioning machine, a fluidized bed type dry-wet coal mixing conditioning machine, a deduster (8) and a granulator (9), the coking charge coal humidity difference conditioning machine is formed by the internal fluidized bed type drying and conditioning machine and the fluidized bed type dry-wet coal mixing conditioning machine, the internal fluidized bed type drying and conditioning machine deeply dehumdifies partial wet coal needing conditioning, and sends the dried partial coal to the fluidized bed type dry-wet coal mixing conditioning machine, and the dried partial coal and the other welt coal needing conditioning are subjected to hybrid conditioning in a fluidization state. The system has the advantages of simplified flow, reduced heat transfer and heating surfaces, simple structure, good interchangeability, convenient examination and maintenance, reliable operation, reliable and flexible conditioning control and adjustment, full and reasonable energy utilization, and reduction of the size of standby equipment of present conditioning systems.
Description
Technical field
The present invention relates to coking industry coking technology field, especially relate to a kind of system of utilizing the damping of coking charge coal psychrometric difference.
Background technology
Coal humidifying technology (CMC) refers to " coking charge coal moisture control " technique, its ultimate principle is that outside coking coal is utilized before shove charge, heat is carried out heat drying, dehydration, reach the moisture regulation and control of coal, thereby realize energy input, assurance coke oven operation stability, raising coke quality or the amount of allocating into that increases weak caking coal that reduces process of coking, the object that reduces coking sewage quantity.Meanwhile, the water capacity of coking charge coal reduces, and the bulk density of coal strengthens, the corresponding coke output that improved.
Along with the development of China's coal conditioning technique, existing multiple coal humidifying technology technology, mainly comprises that to take multitube rotary formula that low-pressure steam is thermal barrier dry and take fluid bed drying process technology that flue gases of cock oven is thermal barrier etc.Through the test of operation practice, existing coal humidifying technology all exists some defects, adopts low-pressure steam as thermal barrier, needs vapour source, utilizes high-grade energy.If utilize stack gas as thermal barrier, the long distance of high-temperature flue gas need to be carried, Wind Volume high-temperature blower energy consumption and flue gas thermosteresis are larger, and flue gas flow is limited, and thermal capacity is lower, and adjustability is poor.Secondly, domestic numerous independent coal chemical enterprise coke oven thermal source adopts coke-oven gas, and the stack gas moisture content of generation is high, and therefore, it is low that stack gas is carried wet ability, affects dehumidification efficiency.Above-mentioned Technology mainly exists that plant energy consumption is high, debugging capability is low, infrastructure investment is large, running cost is high, regulating and controlling is complicated and the problem such as running maintenance amount is large.Above-mentioned each humidifying technology technology, in coal humidifying technology flow process, does not all arrive and optimizes use the input of heat and recovery, in damping process, all coking charge coals is carried out to damping processing, drops into a large amount of energy.After coal damping, a large amount of physics sensible heats that coal carries are also discharged and are wasted with fluidizing medium.And the moisture in air amount again again in process of cooling of the hot coal after damping.
Summary of the invention
The present invention is in order to overcome some defects in current technology, reduce as far as possible the energy dropping in humidifying technology flowchart process, a kind of system of utilizing the damping of coking charge coal psychrometric difference is provided for this reason, comprise that built-in hot fluidized bed type is dried damping machine, dry-wet coal mixing damping machine of fluidized bed type, fly-ash separator 8 and tablets press 9, the dry damping machine of described built-in hot fluidized bed type carries out degree of depth dehumidification to producing required 30%～60% the wet coal of stove that enters when fluidized-bed temperature is 90 ℃, the humidity of coal is down to 3%, then the moisture-free coal that is 3% by moisture percentage is delivered to fluidized bed type and is done-wet in coal mixing damping machine, under fluidized state, mix damping with 40%～70% wet coal of all the other required damping, the dry damping machine of described built-in hot fluidized bed type top is provided with first row gas port 7, do-wet coal mixing damping machine of fluidized bed type top is provided with second row gas port 17, the waste gas that dry-wet coal mixing damping machine of the dry damping machine of built-in hot fluidized bed type and fluidized bed type produces in damping process passes into fly-ash separator 8 by first row gas port 7 and second row gas port 17 respectively, and the fine particle of the coal after dedusting is by tablets press 9 granulating and formings.
The present invention utilizes the system of coking charge coal psychrometric difference damping, the dry damping machine of described built-in hot fluidized bed type comprises the first wind region 1, the first drying zone 2, first row headroom 3 and first row gas port 7 from bottom to top successively, in described the first drying zone 2, be provided with built-in heat exchanger 5, in first row headroom 3, be provided with again heat exchanger 4.
The present invention utilizes the system of coking charge coal psychrometric difference damping, and dry-wet coal mixing damping machine of described fluidized bed type comprises the second wind region 11, the second drying zone 12, second row headroom 13 and second row gas port 17 from bottom to top successively.
The present invention utilizes the system of coking charge coal psychrometric difference damping, and described the first wind region 1 is connected with a first class blower fan 10, is provided with first damper 6 between described first class blower fan 10 and the first wind region 1.
The present invention utilizes the system of coking charge coal psychrometric difference damping, and described the second wind region 11 is connected with second fluidized air blower 20, is provided with second damper 16 between described the second fluidized air blower 20 and the second wind region 11.
In the present invention, adopt the dry damping machine of built-in hot fluidized bed type to carry out the degree of depth damping part that needs damping to enter in stove coal, the temperature in fluidisation lathe bed is 90 ℃, has strengthened the wet ability of taking of fluidized wind, makes it moisture in coal content and reaches 3% left and right.Then, the moisture-free coal that is 3% this part moisture percentage, be transported in fluidized bed type combination drying damping machine, mix with the wet coal of another part, utilize the psychrometric difference existing between dry, wet coal, under fluidized state, closely mix, moisture dry, that wet between coal is poor to be transmitted fast under its moisture gradient, reaches the target of damping.In the dry damping machine of built-in hot fluidized bed type, establish serpentine tube heat exchange heating surface, adopt the heat-transfer medium of high specific heat as the main thermal source of wet coal degree of depth dehumidification, and also as fluidized-bed fluidizing medium heat source, therefore, fluidizing medium need not be born the required heat of coal damping, fluidizing medium institute heat requirement is only without 20% of built-in serpentine tube heat exchange heating surface, and the fluidized gas scale of construction is only also 20%～30% left and right, and fluidizing velocity is 0.3～0.5m/s.Heat source medium of the present invention is pressure 0.4～0.6MPa, and temperature is that the saturated hot-water of 140 ℃～170 ℃ is as heat-transfer medium; Regulation range and the controllability of the dry damping machine of built-in hot fluidized bed type have been improved.
The present invention adopts the wet coal of the part of required damping is suitably improved to the temperature of fluidisation lathe bed by built-in hot fluidized bed type damping machine, make lathe bed temperature arrive 90 ℃ of left and right, fluidizing agent is under this temperature levels, it takes wet energy force rate, and it will exceed nearly 10 times of left and right under 60 ℃ of states, has improved the dehumidification ability of damping machine.At 90 ℃ of temperature, to producing required 30%～60% the wet coal of stove that enters, carry out degree of depth dehumidification, the humidity of coal is down to 3%.Then the moisture-free coal that is 3% by moisture percentage is delivered to fluidized bed type and is done-wet in coal mixing damping machine, mix under fluidized state with 40%～70% wet coal of all the other required damping, utilize psychrometric difference and temperature head between dry, wet coal, moisture and the temperature doing, wet between coal are transmitted fast, reached the target of damping.
The present invention carries out degree of depth damping to part coking charge coal, although improved the temperature of fluidizing agent, need to increase a little heat and drop into, and reduces the dry dehumidification that enters stove coal of half quantity, and its required heat amount can reduce.Moreover due to the quantity minimizing of depth drying coal, fluidisation air quantity reduces, resistance to flow also can reduce, and power of fan reduces, and this system electricity consumption is significantly saved.In a word, this system total energy consumption has the reduction of 30% left and right than the method for original whole heating damping.
The present invention has considered the heat of the physics sensible heat of coal after dry to reclaim again, reduce the input of energy for damping, dry-wet coal the mixings moisture control method of the fluidized bed type that adopts, recycle ridity and its heat carrying of the coal of depth drying, without dropping into again extra heat.Therefore, in dry-wet coal mixing damping machine of fluidized bed type, need not arrange other heating surface, simplify the structure of equipment, save steel.Dry-wet coal mixing damping machine operation of fluidized bed type can adopt cryodrying medium and low speed fluidizing velocity, has guaranteed security, stability and the adjustability of coking charge coal damping process.The temperature that out enters stove coal from dry-wet coal mixing damping machine of fluidized bed type is controlled at 40 ℃～50 ℃ left and right, humidity can be between 6%～9% adjustable control, there will not be coal charge to produce the consequence that volatile matter is separated out and moisture-free coal " gets damp ", guarantee the security of coal damping operation.
The dry damping machine of built-in hot fluidized bed type that the present invention adopts, thermal source suitability is stronger, also can be diversified, be particularly suitable for the recycling of low-grade residual heat and energy.Recycle the heat energy of flue gases of cock oven, produce saturated hot-water or the micro-superheated vapour of low pressure etc., as the heat-transfer medium of built-in heat exchanger.Because specific heat of water is large, heat load is large, and the coefficient of heat transfer is high, can provide enough heats to carry out heat exchange, has good heat transfer drying effect.Flue gases of cock oven need not enter moisture eliminator, sees through thick coal seam, has reduced flow of flue gas resistance, has reduced the power of induced draft fan fairly largely, has saved power consumption.The dry damping machine of built-in hot fluidized bed type take thermal barrier that saturated hot-water is built-in heat exchanger, take air as fluidized-bed fluidizing medium.The main thermal source of saturated hot-water heat source is from flue gases of cock oven, and temperature between 140～190 ℃, control adjustable, converted by gas-liquid interchanger.Too high when wet moisture content of coal, when the heat that stack gas provides can not meet damping and requires, can adopt external auxiliary thermal source, coke-oven gas as a small amount of in aftercombustion or blast furnace gas, suitably improve hot water temperature, meets the demand of coal humidifying technology operation to heat.
Another major equipment in the present invention is dry-wet coal mixing damping machine of fluidized bed type; Dry-wet coal mixing damping machine structural shape of fluidized bed type is similar to the dry damping machine of built-in hot fluidized bed type, is also to adopt drying zone and exhaust space to adopt logical storehouse pattern, and wind region adopts a minute storehouse non-uniform flow air feed.Psychrometric difference between dry, the wet coal of dry-wet coal mixing damping machine utilization of fluidized bed type fully mixes under fluidized state, reaches humidifying technology requirement, so do not establish interchanger in its drying zone and exhaust space.Temperature head between dry, wet coal in dry-wet coal mixing damping machine of fluidized bed type, after dry/wet coal mixes, the temperature of coal is between 40 ℃～50 ℃, along with the coal in fluidized-bed is dry, along coal fluidization flow direction, coal is progressively dry, in order to prevent that coal grain and dust from splashing, the fluidizing velocity of fluidized-bed reduces thereupon, as far as possible between 0.3～0.5m/s.
The present invention can turn down 4% left and right from existing wet moisture content of coal content, and the stack gas waste heat that thermal source is produced by its this coke oven to the greatest extent provides.As improved wet coal damping ability, only need to increase portion of external heat, as adopted low-pressure steam and coke-oven gas or blast furnace gas afterburning well heater to provide.
The invention has the beneficial effects as follows:
1. the process simplification of system of the present invention, heat transfer heating surface reduces, and system architecture is simple, interchangeability good, and easy access is reliable.
2. damping regulating and controlling is reliable, flexible.
With Heat Transfer and basic theory of hydrodynamics, heating working medium and the fluidized-bed fluidisation working medium of dry damping machine adopt respectively two kinds of working medium.The one, improve dry damping machine institute's heat requirement transfer capability and its year wet ability, the 2nd, utilized the physics sensible heat of moisture-free coal to recycle.
At coke oven flue gas outlet, arranging hot water preheater, is saturated hot-water by the thermal conversion of stack gas, has promoted the thermal capacity of heating medium, improves heat delivery efficiency.By changing saturated hot-water flow and temperature, meet the requirement of coal damping regulating working conditions.Fluidizing medium adopts a minute storehouse air feed, and flow velocity can keep stablizing, so fan delivery does not need to adopt frequency conversion system to regulate, while built-in heat exchanger can guarantee heat balance and temperature-stable between itself and wet coal.Therefore, built-in heat exchanger and wet coal adopt strengthening fluidisation heat transfer type, and its heat-transfer effect is good, regulate convenient for thermal equilibrium, regulate and be swift in response, flexibly.
3. abundant reasonable energy utilization.
The present invention adopts psychrometric difference and the temperature head between dry/wet coal to carry out humidifying technology, can transmission characteristic according to the moisture gradient of material, and adopt the wet coal of part to carry out depth drying damping, improve material and carry wet ability, play in dry damping effect.The whole wet coal damping that has reduced original technique adds heat, the corresponding minimizing of built-in heating surface area.Meanwhile, because degree of depth damping coal amount only has half left and right of original coal amount, fluidized-bed fluidization air amount reduces, and resistance to flow also decreases, and the pressure head of blower fan will reduce by 20%～30% left and right, 30% left and right of can economizing on electricity on year-on-year basis.
Owing to adopting the wet coal depth drying damping of part, make fluidized-bed lathe bed temperature arrive 90 ℃ of left and right, suitably need to drop into more heat, but fluidizing agent is under this temperature levels, it takes wet energy force rate, and it will exceed nearly 10 times of left and right under 60 ℃ of states, has improved the dehumidification ability of damping machine.And adopt low speed fluidisation operation condition, and make fluidization air amount only have 1/3rd left and right of the fluidized gas flow of original fluidized bed dryer, reduced the energy consumption of fluidizing air blower.
4. coal mixing damping machine is done-wet to the dry damping machine of the built-in hot fluidized bed type of major equipment of the present invention and fluidized bed type, all adopt skeleton construction, modular combination, the installation and repairing of assurance equipment is convenient, and can be according to production requirement, a plurality of equipment also can combine large dehumidification system, and only the standby backup module of need can guarantee the normal production of humidity controlling system, has reduced the scale of the stand-by facilities of existing humidity controlling system.
5. operation condition regulation system of the present invention is simple, has saved the bypath system of flue gas recirculation system, adopts saturated hot-water, steam or thermal oil as thermophore, and the heat regulation of heat exchanger is swift in response.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is schematic diagram of the present invention.
Embodiment
Disclosed all features in this specification sheets, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Disclosed arbitrary feature in this specification sheets (comprising any accessory claim, summary and accompanying drawing), unless narration especially all can be replaced by other equivalences or the alternative features with similar object.That is,, unless narration especially, each feature is an example in a series of equivalences or similar characteristics.
The system of utilizing the damping of coking charge coal psychrometric difference as shown in Figure 1, comprise that built-in hot fluidized bed type is dried damping machine, fluidized bed type dry-wet coal mixing damping machine, fly-ash separator 8 and tablets press 9, the dry damping machine of described built-in hot fluidized bed type carries out degree of depth dehumidification to producing required 30%～60% the wet coal of stove that enters when fluidized-bed temperature is 90 ℃, the humidity of coal is down to 3%, then, in the moisture-free coal that is 3% by moisture percentage is delivered to fluidized bed type dry-wet coal mixing damping machine, under fluidized state, mix damping with 40%～70% wet coal of all the other required damping; The dry damping machine of described built-in hot fluidized bed type top is provided with first row gas port 7; do-wet coal mixing damping machine of fluidized bed type top is provided with second row gas port 17; the waste gas that dry-wet coal mixing damping machine of the dry damping machine of built-in hot fluidized bed type and fluidized bed type produces in damping process passes into fly-ash separator 8 by first row gas port 7 and second row gas port 17 respectively, and the cinder after dedusting is by tablets press 9 granulating and formings.The dry damping machine of described built-in hot fluidized bed type comprises the first wind region 1, the first drying zone 2, first row headroom 3 and first row gas port 7 from bottom to top successively, in described the first drying zone 2, be provided with built-in heat exchanger 5, in first row headroom 3, be provided with again heat exchanger 4; Dry-wet coal mixing damping machine of described fluidized bed type comprises the second wind region 11, the second drying zone 12, second row headroom 13 and second row gas port 17 from bottom to top successively.Described the first wind region 1 is connected with a first class blower fan 10, is provided with first damper 6 between described first class blower fan 10 and the first wind region 1.Described the second wind region 11 is connected with second fluidized air blower 20, is provided with second damper 16 between described the second fluidized air blower 20 and the second wind region 11.Described the first wind region 1 and the second wind region 11 are equipped with bellows, air distribution plate and blast cap, adopt the non-constant speed air-supply in minute storehouse.Its fluidizing medium can be with normal temperature air or nitrogen.
The heating surface that in the present invention, the dry damping machine of built-in hot fluidized bed type arranges in its drying zone, for the depth drying damping heating of the wet coal of part, heating working medium adopts saturated hot-water, and temperature is adjustable at 140 ℃～190 ℃; At the built-in part of its exhaust space heat exchanger again, prevent from carrying the hydrogenesis in humid gas, improve humid gas elimination ability.Dry-wet coal mixing damping machine of fluidized bed type is not established heating surface in its drying zone, and its humidity conditioning function mainly mixes by dry, the wet coal of the dry damping machine of built-in hot fluidized bed type the dry damping effect of wet coal of playing.
Thermal source required for the present invention is mainly usingd flue gases of cock oven waste heat as heat source, through feed water preheater, produce saturation water as the dry damping machine heat-transfer medium of built-in hot fluidized bed type, saturated hot-water is mainly used in wet coal in the dry damping machine inner drying of built-in hot fluidized bed type district and the use of fluidizing medium heating, meets humidifying technology needs.Feed water preheater is arranged between coke oven flue outlet and coke oven chimney, avoids the long distance of high-temperature flue gas to carry, and saves fan energy consumption and flue gas thermosteresis.When the flue gases of cock oven temperature of chimney root is 200 ℃.Adopt coking charge coal psychrometric difference humidity controlling system conventionally can provide the moisture of coal is reduced to 4% required heat.
The present invention adopts the wet coal depth drying of part, the dehumidification method of then mixing, widened low temperature heat approach, and the physics sensible heat of coal recycling carried out dry damping in coal humidifying technology flowchart process after, improve thermal source utilization ratio, compared conserve energy 30% left and right with existing humidifying technology.Fluidizing medium adopts minute storehouse fluidisation air feed and a lower fluidizing velocity, guarantees that most fine-particle coals can not be fluidized medium elutriation, has relatively reduced by 70% coal particle airborne dust with existing humidifying technology.
The invention has the beneficial effects as follows:
1. system flow of the present invention is simplified, and heat transfer heating surface reduces, and system architecture is simple, interchangeability good, and easy access is reliable.
2. damping regulating and controlling is reliable, flexible.
With Heat Transfer and basic theory of hydrodynamics, heating working medium and the fluidized-bed fluidisation working medium of dry damping machine adopt respectively two kinds of working medium.The one, improve dry damping machine institute's heat requirement transfer capability and its year wet ability, the 2nd, utilized the physics sensible heat of moisture-free coal to recycle.
At coke oven flue gas outlet, arranging hot water preheater, is saturated hot-water by the thermal conversion of stack gas, has promoted the thermal capacity of heating medium, improves heat delivery efficiency.By changing saturated hot-water amount and temperature, meet the requirement of coal damping regulating working conditions.Fluidizing medium adopts a minute storehouse air feed, and flow velocity can keep stablizing, so fan delivery does not need frequency conversion system to regulate, while built-in heat exchanger can guarantee heat balance and temperature-stable between itself and wet coal.Therefore, built-in heat exchanger and wet coal adopt strengthening fluidisation heat transfer type, and its heat-transfer effect is good, regulate convenient for thermal equilibrium, regulate and be swift in response, flexibly.
3. abundant reasonable energy utilization
The present invention adopts psychrometric difference and the temperature head between dry/wet coal to carry out humidifying technology, can transmission characteristic according to the moisture gradient of material, and adopt the wet coal of part to carry out depth drying damping, improve material and carry wet ability, play in dry damping effect.The whole wet coal damping that has reduced original technique adds heat, the corresponding minimizing of built-in heating surface area.Meanwhile, because degree of depth damping coal amount only has half left and right of original coal amount, fluidized-bed fluidization air amount reduces, and resistance to flow also decreases, and the pressure head of blower fan will reduce by 20%～30% left and right, 30% left and right of can economizing on electricity on year-on-year basis.
Owing to adopting the wet coal depth drying damping of part, make fluidized-bed lathe bed temperature arrive 90 ℃ of left and right, suitably need to drop into more heat, but fluidizing agent is under this temperature levels, it takes wet energy force rate, and it will exceed nearly 10 times of left and right under 60 ℃ of states, has improved the dehumidification ability of damping machine.And adopt low speed fluidisation operation condition, and make fluidization air amount only have 1/3rd left and right of the fluidized gas flow of original fluidized bed dryer, reduced the energy consumption of fluidizing air blower.
4. coal mixing damping machine is done-wet to the dry damping machine of the built-in hot fluidized bed type of major equipment of the present invention and fluidized bed type, all adopt skeleton construction, modular combination, the installation and repairing of assurance equipment is convenient, and can be according to production requirement, a plurality of equipment also can combine large dehumidification system, and only the standby backup module of need can guarantee the normal production of humidity controlling system, has reduced the scale of the stand-by facilities of existing humidity controlling system.
5. operation condition regulation system of the present invention is simple, has saved the bypath system of flue gas recirculation system, adopts saturated hot-water, steam or thermal oil as thermophore, and the heat regulation of heat exchanger is swift in response.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination disclosing in this manual, and the arbitrary new method disclosing or step or any new combination of process.
Claims (6)
1. a system of utilizing the damping of coking charge coal psychrometric difference, it is characterized in that: comprise that built-in hot fluidized bed type is dried damping machine, dry-wet coal mixing damping machine of fluidized bed type, fly-ash separator (8) and tablets press (9), the dry damping machine of described built-in hot fluidized bed type carries out degree of depth dehumidification to producing required 30%～60% the wet coal of stove that enters when fluidized-bed temperature is 90 ℃, the humidity of coal is down to 3%, then the moisture-free coal that is 3% by moisture percentage is delivered to fluidized bed type and is done-wet in coal mixing damping machine, under fluidized state, mix damping with 40%～70% wet coal of all the other required damping, the dry damping machine of described built-in hot fluidized bed type top is provided with first row gas port (7), do-wet coal mixing damping machine of fluidized bed type top is provided with second row gas port (17), the waste gas that dry-wet coal mixing damping machine of the dry damping machine of built-in hot fluidized bed type and fluidized bed type produces in damping process passes into fly-ash separator (8) by first row gas port (7) and second row gas port (17) respectively, and the cinder after dedusting is by tablets press (9) granulating and forming.
2. the system of utilizing the damping of coking charge coal psychrometric difference according to claim 1, it is characterized in that: the dry damping machine of described built-in hot fluidized bed type comprises the first wind region (1), the first drying zone (2), first row headroom (3) and first row gas port (7) from bottom to top successively, in described the first drying zone (2), be provided with built-in heat exchanger (5), in first row headroom (3), be provided with again heat exchanger (4).
3. the system of utilizing the damping of coking charge coal psychrometric difference according to claim 2, is characterized in that: dry-wet coal mixing damping machine of described fluidized bed type comprises the second wind region (11), the second drying zone (12), second row headroom (13) and second row gas port (17) from bottom to top successively.
4. the system of utilizing the damping of coking charge coal psychrometric difference according to claim 3, it is characterized in that: described the first wind region (1) is connected with a first class blower fan (10), between described first class blower fan (10) and the first wind region (1), be provided with first damper (6).
5. the system of utilizing the damping of coking charge coal psychrometric difference according to claim 3, it is characterized in that: described the second wind region (11) is connected with second fluidized air blower (20), between described the second fluidized air blower (20) and the second wind region (11), be provided with second damper (16).
6. according to the system of utilizing the damping of coking charge coal psychrometric difference described in claim 4 or 5, it is characterized in that: described the first wind region (1) and the second wind region (11) all adopt the flow cloth wind such as minute storehouse is non-along coal charge flow direction, fluidizing medium adopts air or nitrogen, and fluidizing velocity is between 0.3～0.5m/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210059048.0A CN102585867B (en) | 2012-03-08 | 2012-03-08 | System for conditioning through coking charge coal humidity difference |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210059048.0A CN102585867B (en) | 2012-03-08 | 2012-03-08 | System for conditioning through coking charge coal humidity difference |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102585867A CN102585867A (en) | 2012-07-18 |
| CN102585867B true CN102585867B (en) | 2014-08-13 |
Family
ID=46475110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210059048.0A Expired - Fee Related CN102585867B (en) | 2012-03-08 | 2012-03-08 | System for conditioning through coking charge coal humidity difference |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102585867B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103952167B (en) * | 2014-05-14 | 2015-12-02 | 中国科学院城市环境研究所 | A kind of energy saving and environment friendly low moisture coke making process and system |
| CN104388106A (en) * | 2014-11-25 | 2015-03-04 | 无锡亿恩科技股份有限公司 | Process for highly effectively humidifying high-moisture coking coal in energy saving manner |
| CN104726121B (en) * | 2015-03-20 | 2018-04-10 | 无锡亿恩科技股份有限公司 | Device for high humility shove charge coking coal humidifying technique |
| CN105647557B (en) * | 2016-03-16 | 2019-03-19 | 无锡亿恩科技股份有限公司 | Device for coking coal stage drying step humidifying technology |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1285388A (en) * | 1999-08-18 | 2001-02-28 | 新日本制铁株式会社 | Method and apparatus for drying coal |
| CN2575571Y (en) * | 2002-11-07 | 2003-09-24 | 广东省新的生物工程研究所有限公司广州生物制品厂 | Vacuum induction smelting furnace |
| JP4077591B2 (en) * | 2000-02-09 | 2008-04-16 | 新日鉄エンジニアリング株式会社 | Coal humidity control equipment with wet solid-gas separator |
| JP2008138021A (en) * | 2006-11-30 | 2008-06-19 | Nippon Steel Corp | Method and apparatus for pretreating coal of coke oven |
| CN101418221A (en) * | 2007-10-23 | 2009-04-29 | 上海寰球石油化学工程有限公司 | Remixing process of dry pulverized coke and wet pulverized coke of coke making raw material |
| CN101643657A (en) * | 2009-09-02 | 2010-02-10 | 袁长胜 | Coking coal pretreatment method and special device thereof |
| CN101688140A (en) * | 2007-05-09 | 2010-03-31 | 埃拉咨询及服务有限公司 | Apparatus for the utilization of wet waste material |
| CN101831314A (en) * | 2009-03-12 | 2010-09-15 | 兰州瑞德干燥技术有限公司 | Method for humidifying and drying coking coal in coke oven and equipment therefor |
-
2012
- 2012-03-08 CN CN201210059048.0A patent/CN102585867B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1285388A (en) * | 1999-08-18 | 2001-02-28 | 新日本制铁株式会社 | Method and apparatus for drying coal |
| JP4077591B2 (en) * | 2000-02-09 | 2008-04-16 | 新日鉄エンジニアリング株式会社 | Coal humidity control equipment with wet solid-gas separator |
| CN2575571Y (en) * | 2002-11-07 | 2003-09-24 | 广东省新的生物工程研究所有限公司广州生物制品厂 | Vacuum induction smelting furnace |
| JP2008138021A (en) * | 2006-11-30 | 2008-06-19 | Nippon Steel Corp | Method and apparatus for pretreating coal of coke oven |
| CN101688140A (en) * | 2007-05-09 | 2010-03-31 | 埃拉咨询及服务有限公司 | Apparatus for the utilization of wet waste material |
| CN101418221A (en) * | 2007-10-23 | 2009-04-29 | 上海寰球石油化学工程有限公司 | Remixing process of dry pulverized coke and wet pulverized coke of coke making raw material |
| CN101831314A (en) * | 2009-03-12 | 2010-09-15 | 兰州瑞德干燥技术有限公司 | Method for humidifying and drying coking coal in coke oven and equipment therefor |
| CN101643657A (en) * | 2009-09-02 | 2010-02-10 | 袁长胜 | Coking coal pretreatment method and special device thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102585867A (en) | 2012-07-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102419079B (en) | Solid particle material composite grading and drying device and method | |
| CN102041101B (en) | Gasification method with gas waste heat utilization | |
| CN102506420B (en) | Coal ash fluidized bed combustion decarburization device | |
| CN102585867B (en) | System for conditioning through coking charge coal humidity difference | |
| CN102589268B (en) | Flue gas waste heat recycling method and flue gas waste heat recycling device of biomass furnace | |
| CN102492447B (en) | Coking coal damping process for internal-heating type forced heat transferring fluidized bed | |
| CN102533302A (en) | Internal heating type dryer for in-furnace coking coal dehumidification | |
| CN102676193A (en) | Humidifying process for high-moisture charged coking coal | |
| CN201284292Y (en) | Central heating system for gypsum board and construction gypsum production line | |
| CN204474585U (en) | For the device of high humidity shove charge coking coal humidifying technique | |
| CN104726121B (en) | Device for high humility shove charge coking coal humidifying technique | |
| CN202492499U (en) | Internal heating type dryer for dehumidifying coking coal entering into furnace | |
| CN202492498U (en) | Device for regulating humidity by using humidity difference of coking coal | |
| CN108203604A (en) | The cement sensible heat recovery system and method for a kind of biomass gasification burning | |
| CN205351944U (en) | A drying device that is used for high water capacity powder living beings | |
| CN202337761U (en) | Coking coal humidity adjustment system of energy-saving fluidized bed | |
| CN102093903A (en) | Method and device for recycling heat produced by pyrolytic reaction device | |
| CN105733635B (en) | Clean and effective step sieves built-in fluidized hot bed coal humidifying technology | |
| CN203216215U (en) | Fixed bed lignite dryer | |
| CN106052366A (en) | Method and system for controlling oxygen concentration through coal drying | |
| CN106091659A (en) | A kind of coal drying controls the method and system of oxygen concentration | |
| CN205528602U (en) | Built -in hot fluidized bed coal humidifying device of clean high -efficient step screening | |
| CN103571512A (en) | Thermal gas flow circulating type winnowed coal humidifying process for indirectly utilizing waste gas of coke oven flue | |
| CN104388106A (en) | Process for highly effectively humidifying high-moisture coking coal in energy saving manner | |
| CN206019257U (en) | The system that a kind of coal drying controls oxygen concentration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |