CN102607297B - Device for carrying out heat exchange between gas and solid particulate matters - Google Patents
Device for carrying out heat exchange between gas and solid particulate matters Download PDFInfo
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- CN102607297B CN102607297B CN201110431967.1A CN201110431967A CN102607297B CN 102607297 B CN102607297 B CN 102607297B CN 201110431967 A CN201110431967 A CN 201110431967A CN 102607297 B CN102607297 B CN 102607297B
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Abstract
The invention relates to a device for carrying out heat exchange between gas and solid particulate matters. The device comprises at least one level heat exchange unit. Each level heat exchange unit comprises an air flow channel; an air inlet is arranged at one end of the channel, and an air outlet is arranged at the other end of the channel; sedimentation material collection hoppers are arranged at the bottom of the air flow channel in a downward extending communication manner; at least one feeding opening is arranged at the top of the air flow channel and is located above a communicated opening of the sedimentation material collection hoppers and the air flow channel; the feeding opening is arranged near the air inlet; the air outlet of the air flow channel of a last grade of the heat exchange unit is communicated with the air inlet of the air flow channel of an adjacent heat exchange unit; the feeding opening of the last grade of the heat exchange unit is connected with the bottom of the sedimentation material collection hoppers of the adjacent heat exchange unit; a discharging opening is arranged at the bottom of each sedimentation collection hopper; a plurality of sedimentation collection hoppers are arranged in parallel between the air inlet and the air outlet of the air channel in each level heat exchange unit; and air flowing speed in the air flow channel is 0.2-1 m/s.
Description
Technical field
The present invention is specifically related to the device carrying out heat exchange between a kind of gas and solid particulate matter, belongs to industrial equipment field.
Background technology
In industrial production, often need to utilize and carry out exchange heat to be heated between gas and solid particulate matter or cooled gas or solid particulate matter, more commonly utilize the powder heating that high-temperature gas is formed solid particulate matter, in order to improve the time of contact of gas and particle as much as possible and utilize the heat energy of high-temperature gas as much as possible, usually air-flow and powder is made to form reverse flow, contact fully with powder to enable high-temperature gas, mix, thus make heat exchange between the two more abundant, obtain the powder that temperature is higher.
In prior art, Chinese patent CN 85109480A discloses a kind of cement slurry vertical cylinder pre-heating system, it cyclone separator comprising preheater cylindrical shell and be connected to its top, preheater cylindrical shell top is provided with raw meal powder and adds hand-hole, hyperbolic type reducing and dispersion device is provided with in cylindrical shell, the heat smoke of kiln tail enters cylindrical shell by the bottom of preheater cylindrical shell, the raw meal powder that cement raw meal sends into shaft preheater top by air driven pump adds hand-hole, raw material are through adding hand-hole and to enter after in cylindrical shell and the reverse convection current of heat smoke carry out heat exchange while convection current, the cyclone separator of air-flow through cylindrical shell top is discharged afterwards, the raw material heated up after heat exchange are then discharged from cylinder body bottom.In the process, after raw material enter cylindrical shell, what first enter is in cylindrical shell first alms bowl, in the first alms bowl, raw material are disperseed by the jet-stream wind of reducing place, major part raw material be easy to be deposited in reducing domatic on, when accumulation reaches to a certain degree, the agglomerating random landing of raw material enters in the second alms bowl, is disperseed again by the jet-stream wind of the second alms bowl reducing place, repeats said process, when being deposited in, the group of the material on reducing inclined-plane is excessive, when landing is got off afterwards not as good as injected air dispersion, just impinge upon on dispersion device and disperseed further, finally enter kiln.
In above-mentioned technology, cement slurry enters in heat exchange cylindrical shell with powdery originally, but due to the structure of inner barrel, raw material are easily gathered on reducing slope and form bulk or dough owing to piling up for a long time, when carrying out preheating, the raw material of this state of aggregation only have surface can carry out heat exchange with heat smoke, but its inside fully cannot touch heat smoke, and thus pre-heat effect is not good, this just causes raw material preheating uneven.Although, the raw material of dispersion device for scatter-gather state are provided with in preheating cylinder, but the bulk of raw material or block are still easy to fall from the gap of dispersion device, dispersion device cannot ensure to contact bulk completely or block disperses it, so still cannot solve the aforementioned problem uneven to raw material preheating.
In addition, in the art, raw material and heat smoke carry out heat exchange in subtend contact process, due in this heat transfer process, air-flow is carry out flowing also heat exchange, in the process of fluid interchange, because heat smoke and raw material have speed separately along its flow direction originally always, so the two time of contact in the process of subtend contact is very short, cause the heat exchange efficiency of raw material and heat smoke very low.
In addition, heat-exchange device power consumption of the prior art is all very large, if the voltage loss of the 5 grades of preheating towers in cement plant is about 10,000 handkerchiefs.
Summary of the invention
First technical problem to be solved by this invention is that in prior art, cement slurry is easily gathered in formation bulk or dough on reducing slope, when carrying out preheating, the heat exchange that directly contacts can be carried out with heat smoke in the raw material surface of this state of aggregation, but its inside fully cannot touch heat smoke, thus pre-heat effect is not good, this just causes powder preheating uneven, although be provided with the powder of dispersion device for scatter-gather state in preheating cylinder, but the bulk of powder or block are still easy to fall from the gap of dispersion device, dispersion device cannot ensure the powder of complete scatter-gather state, and then a kind of heat-exchanger rig made between the gas of the even preheating of powder and solid particulate matter is provided.
Second technical problem to be solved by this invention is because air-flow is carry out flowing and heat exchange along its flow direction originally always in prior art, and heat smoke and raw material have speed separately in the process of fluid interchange, so the two time of contact heat-exchanging in the process of subtend contact is very short, cause the heat exchange efficiency of raw material and heat smoke very low; And then propose a kind of contact heat-exchanging time extended between heat smoke and raw material powder, thus improve the heat-exchanger rig between the gas of its heat exchange efficiency and solid particulate matter.
For solving the problems of the technologies described above, the invention provides the heat-exchanger rig between a kind of gas and solid particulate matter, comprise at least one-level heat exchange unit, every grade of described heat exchange unit comprises gas channel, one end of described gas channel is provided with air inlet, and the other end is provided with gas outlet;
Described gas channel horizontally set;
Offer sedimentation aggregate bin in the bottom of described gas channel to downward-extension, described sedimentation aggregate bin is connected with described gas channel;
Be positioned at above described sedimentation aggregate bin and described gas channel open communication be provided with at least one charging aperture at the top of described gas channel, the close described air inlet side that described charging aperture is positioned at described sedimentation aggregate bin arranges;
Along the flow direction of gas, the gas outlet of the gas channel of previous stage heat exchange unit is connected with the air inlet of the gas channel of adjacent heat exchange unit.
The bottom of described sedimentation aggregate bin is provided with discharging opening.
Every grade described in heat exchange unit, it is multiple for arranging described sedimentation aggregate bin, between the air inlet that multiple described sedimentation aggregate bin is juxtaposed on described gas channel and gas outlet.
The close described air inlet side that described charging aperture is positioned at each described sedimentation aggregate bin is arranged.
Along the flow direction of air-flow, the close described air inlet side that described charging aperture is positioned at the described sedimentation aggregate bin of most upstream is arranged.
Adjacent two described sedimentation aggregate bins are connected.
Along the flow direction of gas, the bottom of the sedimentation aggregate bin of described adjacent heat exchange unit connects the top of the gas channel of described previous stage heat exchange unit and is connected with described gas channel, and the bottom connectivity part of the sedimentation aggregate bin of described adjacent heat exchange unit is positioned at the sedimentation aggregate bin of described previous stage heat exchange unit and the top of its gas channel open communication.
Along the flow direction of gas, the charging aperture of described previous heat exchange unit is connected with the bottom of the sedimentation aggregate bin of described adjacent heat exchange unit.
Be made up of level Four heat exchange unit, every grade of described heat exchange unit is provided with one or two sedimentation aggregate bin.
Described gas channel is rectangle.
Described sedimentation aggregate bin is infundibulate.
Gas flow rate in described gas channel is 0.2 ~ 2 meter per second.
Gas flow rate in described gas channel is 0.2 ~ 1 meter per second.
The present invention has following beneficial effect compared with prior art:
(1) device of heat exchange is carried out between gas of the present invention and solid particle, every grade of described heat exchange unit comprises the gas channel of horizontally set, one end of described gas channel is provided with air inlet, the other end is provided with gas outlet, sedimentation aggregate bin is offered to downward-extension in the bottom of described gas channel, described sedimentation aggregate bin is connected with described gas channel, be positioned at above described sedimentation aggregate bin and described gas channel open communication be provided with at least one charging aperture at the top of described gas channel, described charging aperture is arranged near described air inlet.
High-temperature gas enters gas channel with certain flow velocity by air inlet, simultaneously, solid particle enters described gas channel by charging aperture, inner at described gas channel, high-temperature gas carries solid particle and travels forward, the part heat transfer process between air-flow and solid particle is achieved while high-temperature gas carries Motion of solid particle, the ability of carrying material due to high-temperature gas is limited, that is, under the prerequisite of certain gas level flow velocity and certain flow distance, solid particle substrate concentration entrained in the gas of flowing has certain limit, when gas level flow velocity and horizontal displacement distance are selected appropriate, no matter the flow (suitable with the concentration of powder contained in gas) of powder has much, certain by the powder that air-flow is taken away, that is, the flow of powder is larger, the powder collected by sedimentation heat exchanger is also more, and the rewinding efficiency of sedimentation heat exchanger is also higher, just based on above-mentioned principle, after the high-temperature gas carrying solid particle moves forward a segment distance, enter in the sedimentation aggregate bin of larger space volume by the gas channel of less spatial volume, at this moment sub-fraction air-flow continues to carry solid particle and continues flowing along former flow direction, all the other most of air-flows then carry solid particle and change former flow direction and flow towards the direction of sedimentation aggregate bin, this part air-flow is when entering sedimentation aggregate bin via gas channel, due to the sudden enlargement in space, make the gas carrying solid particle after entering sedimentation aggregate bin, form air flow swirl i.e. the eddy current of moment, generation due to eddy current makes the further fully turn mixing also fully heat exchange of high-temperature gas and solid particle, solid particulate matter is made to obtain even preheating, and compared with prior art, the device carrying out heat exchange between gas of the present invention and solid particle expends very low energy and just solid particulate matter can be preheating to required temperature, solid particulate matter sedimentation after preheating is stored in the bottom of sedimentation aggregate bin.Therefore, finally only have the remaining solid particulate matter disperse of small part in gas and with gas by gas outlet discharger.
(2) carry out the device of heat exchange between gas of the present invention and solid particle, along the flow direction of gas, the gas outlet of the gas channel of previous stage heat exchange unit is connected with the air inlet of the gas channel of adjacent heat exchange unit; Although a part of heat of high-temperature gas consumes for heat exchange in previous stage heat exchange unit, but its temperature is still higher than the temperature without the solid particulate matter of preheating in adjacent heat exchange unit, therefore still can be continued on for the preheating of solid particulate matter in adjacent heat exchange unit by previous stage heat exchange unit gas outlet effluent air, without the need to arranging thermal source air-flow further, thus reduce pre-thermal energy consumption on the whole.In addition, a small amount of solid particulate matter is contained by the gas outlet effluent air of previous stage heat exchange unit, after it enters rear stage heat exchange unit, can heat exchange be carried out at this heat exchange unit fully and obtain further sedimentation, avoid the loss of this part solid particle directly being discharged the material caused with air-flow, substantially increase the preheating yield of material.
(3) carry out the device of heat exchange between gas of the present invention and solid particle, every grade described in heat exchange unit, be provided with multiple sedimentation aggregate bin, between the air inlet that multiple described sedimentation aggregate bin is juxtaposed on described gas channel and gas outlet; Solid particulate matter and high-temperature gas contact after preheating in heat exchange unit, be separated with gas gradually and be deposited on the bottom of sedimentation aggregate bin, the speed flowed relative to gas due to the speed that solid particulate matter is separated from the gas is slower, multiple sedimentation aggregate bin is set and can as often as possible collects the solid particulate matter after preheating, simultaneously under the drive of gas, solid particulate matter contacts with gas in multiple sedimentation aggregate bin, extend the preheating time of solid particulate matter, make the preheating of solid particulate matter more abundant.
(4) device of heat exchange is carried out between gas of the present invention and solid particle, along the flow direction of gas, the top of the gas channel of the through described previous stage heat exchange unit in bottom of the sedimentation aggregate bin of described adjacent heat exchange unit is also connected with described gas channel, and the bottom connectivity part of the sedimentation aggregate bin of described adjacent heat exchange unit is positioned at the sedimentation aggregate bin of described previous stage heat exchange unit and the top of its gas channel open communication; Solid particulate matter bottom the sedimentation aggregate bin being deposited on previous stage heat exchange unit enters into the gas channel of adjacent heat exchange unit, enter into the sedimentation aggregate bin of adjacent heat exchange unit afterwards, again carry out preheating, to make the more abundant with the needs of realistic use of solid particulate matter preheating; Further, along the flow direction of gas, the charging aperture of described previous stage heat exchange unit is connected with the bottom of the sedimentation aggregate bin of described adjacent heat exchange unit; Solid particulate matter, after the preheating of previous stage heat exchange unit, enters adjacent heat exchange unit as raw material and proceeds preheating, to obtain the heat of actual needs.
Accompanying drawing explanation
In order to make content of the present invention more easily be understood, the present invention is further detailed content of the present invention with detailed description of the invention by reference to the accompanying drawings;
Fig. 1 is of the present invention and is provided with the structural representation carrying out heat-exchanger rig between the gas of a sedimentation aggregate bin and solid particle;
Fig. 2 is of the present inventionly provided with the structural representation carrying out heat-exchanger rig between the gas of two sedimentation aggregate bins and solid particle;
Fig. 3 is of the present inventionly provided with the structural representation carrying out heat-exchanger rig between the gas with two sedimentation aggregate bins of a charging aperture and solid particle;
Fig. 4 is of the present inventionly provided with the structural representation carrying out heat-exchanger rig between the gas of multi-stage heat exchanger unit and solid particle;
Fig. 5 be of the present invention be provided with multi-stage heat exchanger unit and every grade there is the structural representation carrying out heat-exchanger rig between the gas of two sedimentation aggregate bins and solid particle;
Wherein Reference numeral is: 1-air inlet, 2-charging aperture, 3-gas channel, 4-sedimentation aggregate bin, 5-discharging opening, 6-gas outlet, 7-first charging aperture, 8-second charging aperture, 9-first sedimentation aggregate bin, 10-second sedimentation aggregate bin, 11-first order air inlet, 12-first order gas channel, 13-first order sedimentation aggregate bin, 14-first order discharging opening, 15-second level gas channel, 16-second level sedimentation aggregate bin, 17-third level gas channel, 18-third level sedimentation aggregate bin, 19-third level discharging opening, 20-fourth stage air inlet, 21-fourth stage charging aperture, 22-fourth stage gas channel, 23-fourth stage sedimentation aggregate bin, 24-fourth stage discharging opening, 25-fourth stage gas outlet.
Detailed description of the invention
Carry out the device of heat exchange between gas of the present invention and solid particle, comprise at least one-level heat exchange unit, every grade of described heat exchange unit comprises gas channel 3, and one end of described gas channel 3 is provided with air inlet 1, and the other end is provided with gas outlet 6; Described gas channel 3 horizontally set; Offer sedimentation aggregate bin 4 in the bottom of described gas channel 3 to downward-extension, described sedimentation aggregate bin 4 is connected with described gas channel 3; Be positioned at above described sedimentation aggregate bin 4 and described gas channel 3 open communication be provided with at least one charging aperture 2 at the top of described gas channel 3, described charging aperture 2 is positioned at close the described air inlet 1 side setting of described sedimentation aggregate bin 4; Along the flow direction of gas, the gas outlet 6 of the gas channel 3 of previous stage heat exchange unit is connected with the air inlet 1 of the gas channel 3 of adjacent heat exchange unit.
The device carrying out heat exchange between described gas as shown in Figure 1 and solid particle only arranges one-level heat exchange unit, and it comprises the gas channel 3 of horizontally set, and one end of described gas channel 3 is provided with air inlet 1, and the other end is provided with gas outlet 6; Offer the sedimentation aggregate bin 4 be connected with described gas channel 3 to downward-extension in the bottom of described gas channel 3; In the present embodiment, arranging described charging aperture 2 is one, this charging aperture 2 is arranged on the top of described gas channel 3 and is positioned at the top of described sedimentation aggregate bin 4 and described gas channel 3 open communication, and described charging aperture 2 is positioned at close described air inlet 1 side of described sedimentation aggregate bin 4.
Wherein, described gas channel 3 can be selected to be set to circular channel or rectangular channel, and described sedimentation aggregate bin 4 can be selected to be set to infundibulate or rectangle.
The conveniently conveying of solid particle after sedimentation, preferably arranges discharging opening 5 in the bottom of described sedimentation aggregate bin 4, and described discharging opening 5 realizes isolating with extraneous connected sum by outlet valve.
Gas described in the present embodiment and when carrying out the device busy of heat exchange between solid particle, high-temperature gas enters gas channel 3 with certain flow velocity by air inlet 1, simultaneously, solid particle enters described gas channel 3 by charging aperture 2, inner at described gas channel 3, high-temperature gas carries solid particle and travels forward, the part heat transfer process between air-flow and solid particle is achieved while high-temperature gas carries Motion of solid particle, the ability of carrying material due to high-temperature gas is limited, while the high-temperature gas carrying solid particle moves forward, the continuous sedimentation of part solid particle, after a mobile segment distance, high-temperature gas enters in the sedimentation aggregate bin 4 of larger space volume by the gas channel 3 of less spatial volume, at this moment sub-fraction air-flow continues to carry solid particle and continues flowing along former flow direction, all the other most of air-flows then carry solid particle and change former flow direction and flow towards the direction of sedimentation aggregate bin 4, this part air-flow is when entering sedimentation aggregate bin 4 via gas channel 3, due to the sudden enlargement in space, make the gas carrying solid particle after entering sedimentation aggregate bin 4, form air flow swirl i.e. the eddy current of moment, generation due to eddy current makes the further fully turn mixing also fully heat exchange of high-temperature gas and solid particle, solid particulate matter is made to obtain even preheating, solid particulate matter sedimentation after preheating is stored in the bottom of sedimentation aggregate bin 4, the remaining solid particulate matter disperse of small part is in gas and with gas by gas outlet 6 discharger.
The another embodiment of the device carrying out heat exchange between gas of the present invention and solid particle as shown in Figure 2, in this embodiment, it remains and is only provided with one-level heat exchange unit, comprise the gas channel 3 of horizontally set equally, one end of described gas channel 3 is provided with air inlet 1, and the other end is provided with gas outlet 6; As different from Example 1, two sedimentation aggregate bins 4 are provided with in the present embodiment, i.e. the first sedimentation aggregate bin 9 and the second sedimentation aggregate bin 10, two described sedimentation aggregate bins 4 are juxtaposed between described air inlet 1 and gas outlet 6, and be all arranged on the bottom of described gas channel 3 and offer to downward-extension, be connected by gas channel 3 between two described sedimentation aggregate bins 4; Corresponding with described first sedimentation aggregate bin 9 and the second sedimentation aggregate bin 10 respectively, be provided with the first charging aperture 7 and the second charging aperture 8, described first charging aperture 7 is arranged on the top of described gas channel 3 and is positioned at the top of described first sedimentation aggregate bin 9 and described gas channel 3 open communication, and described first charging aperture 7 is positioned at close described air inlet 1 side of described first sedimentation aggregate bin 9; Correspondingly, described second charging aperture 8 is arranged on the top of described gas channel 3 and is positioned at the top of described second sedimentation aggregate bin 10 and described gas channel 3 open communication, and described second charging aperture 8 is positioned at close described air inlet 1 side of described second sedimentation aggregate bin 10.Offer discharging opening 5 in the bottom of described first sedimentation aggregate bin 9 and the second sedimentation aggregate bin 10, described discharging opening 5 is provided with outlet valve, selecting in the present embodiment to arrange described outlet valve is ash-valve.
As the embodiment that can convert, the device carrying out heat exchange between gas of the present invention and solid particle can also be set up in parallel multiple sedimentation aggregate bin 4 between described air inlet 1 and described gas outlet 6, thus the solid particulate matter can collected as much as possible after preheating, make solid particulate matter preheating more abundant further simultaneously.Meanwhile, described charging aperture 2 can arrange multiple by corresponding multiple described sedimentation aggregate bin 4, and close described air inlet 1 side that multiple described charging aperture 2 is positioned at each described sedimentation aggregate bin 4 is arranged; Also can select the flow direction along air-flow, the described sedimentation aggregate bin 4 only in most upstream arranges a charging aperture 2 near described air inlet 1 side.
Gas described in this embodiment and when carrying out the device busy of heat exchange between solid particle, high-temperature gas enters gas channel 3 with certain flow velocity by air inlet 1, simultaneously, solid particle enters described gas channel 3 by the first charging aperture 7, inner at described gas channel 3, high-temperature gas carries solid particle and travels forward, the part heat transfer process between air-flow and solid particle is achieved while high-temperature gas carries Motion of solid particle, the continuous sedimentation of a part of solid particle simultaneously, after a mobile segment distance, high-temperature gas enters in the sedimentation aggregate bin 4 of larger space volume by the gas channel 3 of less spatial volume, at this moment sub-fraction air-flow continues to carry solid particle and continues flowing along former flow direction, all the other most of air-flows then carry solid particle and change former flow direction and flow towards the direction of sedimentation aggregate bin 4, this part air-flow carries solid particle and enters in the first sedimentation aggregate bin 9, high-temperature gas and solid particle be fully turn mixing also fully heat exchange further, solid particulate matter is made to obtain even preheating, solid particulate matter sedimentation after preheating is stored in the bottom of the first sedimentation aggregate bin 9, and open outlet valve and discharge through described discharging opening 5, the disperse of small part remaining solid particulate matter is in gas and flow in described second sedimentation aggregate bin 10 with the air-flow that temperature after heat exchange decreases by the gas channel 3 between described first sedimentation aggregate bin 9 and described second sedimentation aggregate bin 10, at this moment the second charging aperture 8 being positioned at described second sedimentation aggregate bin 10 top starts charging, the high-temperature gas flow in described second sedimentation aggregate bin 10 utilizes its heat energy to carry out aforementioned identical heating process to the solid particle of charging further, the solid particle simultaneously entered in the second sedimentation aggregate bin 10 with air-flow can realize its sedimentation in the second sedimentation aggregate bin 10 further and collect.
In the aforementioned embodiment, also can directly connect between adjacent two described sedimentation aggregate bins 4, syndeton relation as shown in Figure 3, like this after the first sedimentation aggregate bin 9 sedimentation, the disperse of described small part remaining solid particulate matter is in gas and directly entered in described second sedimentation aggregate bin 10 by described first sedimentation aggregate bin 9 with the air-flow that temperature after heat exchange decreases, and carries out further sedimentation collection.
In order to further realize the utilization as much as possible to hot-gas temperature, realize as much as possible collecting the sedimentation of solid particle simultaneously, the device carrying out heat exchange between preferred gas of the present invention and solid particle arranges multi-stage heat exchanger unit (see Fig. 4), and the gas outlet 6 of the gas channel 3 of previous stage heat exchange unit is connected with the air inlet 1 of the gas channel 3 of adjacent heat exchange unit; Every grade described, a sedimentation aggregate bin 4 in heat exchange unit, is provided with in the present embodiment, along the flow direction of gas, the bottom of the sedimentation aggregate bin 4 of described adjacent heat exchange unit connects the top of the gas channel 3 of described previous stage heat exchange unit and is connected with described gas channel 3, and the bottom connectivity part of the sedimentation aggregate bin 4 of described adjacent heat exchange unit is positioned at the sedimentation aggregate bin 4 of described previous stage heat exchange unit and the top of its gas channel 3 open communication.So just achieve adjacent rear stage heat exchange unit provides solid particle from sedimentation to sedimentation aggregate bin 4 inside of previous stage heat exchange unit, also can select the charging aperture 2 also charging simultaneously of every one-level heat exchange unit simultaneously.
As the embodiment that can convert, also can be set to the flow direction along gas, the charging aperture 2 of described previous heat exchange unit is connected with the bottom of the sedimentation aggregate bin 4 of described adjacent heat exchange unit.Charging like this with regard to achieving previous stage heat exchange unit is fixed against the sedimentation feed of the solid particle of rear stage heat exchange unit.
Certainly, two or more sedimentation aggregate bin 4 be set up in parallel also can be set in above-mentioned every grade of heat exchange unit, shown in Figure 5.
In the above-described embodiments, the gas flow rate in described gas channel 3 is 0.2 ~ 2 meter per second.Also the gas flow rate being greater than 2 meter per seconds can be selected.
Preferably, the gas flow rate in described gas channel 3 is 0.2 ~ 1 meter per second.
Above-mentioned when being provided with the device busy carrying out heat exchange between the gas of multi-stage heat exchanger unit and solid particle, high-temperature gas enters in first order gas channel 12 by first order air inlet 11, the flow velocity of high-temperature gas in first order gas channel 12 is 2 meter per seconds, high-temperature gas forms eddy current in first order sedimentation aggregate bin 13 subsequently, then high-temperature gas enters second level gas channel 15 successively, second level sedimentation aggregate bin 16, third level gas channel 17, third level sedimentation aggregate bin 18, fourth stage gas channel 22, in fourth stage sedimentation aggregate bin 23, and respectively second, three, air whirl is formed in level Four sedimentation aggregate bin, the gas of lowering the temperature after heat exchange is finally discharged by fourth stage gas outlet 25, high-temperature gas is while each heat exchange unit flows, solid particulate matter enters fourth stage gas channel 22 by fourth stage charging aperture 21, enter fourth stage sedimentation aggregate bin 23 after being dispelled by the high-temperature gas that is 0.8 meter per second of flow velocity in passage to contact with each other with high-temperature gas eddy current, heat exchange, the downward sedimentation of most solid particulate matter afterwards after preheating enters in third level gas channel 17 by fourth stage discharging opening 24, the solid particulate matter of small part discharges this device with used gas by fourth stage gas outlet 25, the high-temperature gas that the solid particulate matter entering third level gas channel 17 is 1.5 meter per seconds by wherein flow velocity dispels, and decline process in contact with each other with the high-temperature gas eddy current in third level sedimentation aggregate bin 18, heat exchange, through the solid particulate matter of preheating again, wherein major part sedimentation downwards enters in second level gas channel 15 by third level discharging opening 19, remaining solid particulate matter again to be entered in fourth stage heat exchange unit by fourth stage air inlet 20 with high-temperature gas and participates in warm, and detailed process is with above-mentioned, enter solid particulate matter in second level gas channel 15 according to said process successively in second level heat exchange unit, first order heat exchange unit by preheating again, finally through repeatedly preheating solid particulate matter through first order discharging opening 14 discharge for.Thus achieve on the whole utilize one-level heat exchange after the high-temperature gas of lowering the temperature carry out the heat exchange of secondary, three grades and level Four, thus the heat of high-temperature gas is fully absorbed, then the solid particle after absorbing heat can be got back in first order heat exchange unit through sedimentation aggregate bin, further by high-temperature gas, supplementary heat exchange is carried out to it, thus make solid particle reach predetermined temperature, so just achieve the remarkable reduction of energy consumption.
Show after tested, heat-exchanger rig crushing of the present invention is no more than 100 handkerchiefs, if for the preheating of 5 grades, cement plant, voltage loss is no more than 500 handkerchiefs, is only 1/20 of prior art power consumption, even lower.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments, and thus the apparent change of extending out or variation be still among the protection domain of the claims in the present invention.
Claims (13)
1. one kind is carried out the device of heat exchange between gas and solid particle, it is characterized in that, comprise at least one-level heat exchange unit, every grade of described heat exchange unit comprises gas channel (3), one end of described gas channel (3) is provided with air inlet (1), and the other end is provided with gas outlet (6);
Described gas channel (3) horizontally set;
Offer sedimentation aggregate bin (4) in the bottom of described gas channel (3) to downward-extension, described sedimentation aggregate bin (4) is connected with described gas channel (3);
At the top of described gas channel (3) and the top being positioned at described sedimentation aggregate bin (4) and described gas channel (3) open communication is provided with at least one charging aperture (2), described charging aperture (2) is positioned at close described air inlet (1) the side setting of described sedimentation aggregate bin (4);
Along the flow direction of gas, the gas outlet (6) of the gas channel (3) of previous stage heat exchange unit is connected with the air inlet (1) of the gas channel (3) of adjacent heat exchange unit.
2. carry out the device of heat exchange between gas according to claim 1 and solid particle, it is characterized in that, the bottom of described sedimentation aggregate bin (4) is provided with discharging opening (5).
3. between gas according to claim 1 and 2 and solid particle, carry out the device of heat exchange, it is characterized in that, every grade described in heat exchange unit, arrange described sedimentation aggregate bin (4) for multiple, multiple described sedimentation aggregate bin (4) is juxtaposed between the air inlet (1) of described gas channel (3) and gas outlet (6).
4. carry out the device of heat exchange between gas according to claim 3 and solid particle, it is characterized in that, close described air inlet (1) side that described charging aperture (2) is positioned at each described sedimentation aggregate bin (4) is arranged.
5. between gas according to claim 3 and solid particle, carry out the device of heat exchange, it is characterized in that, along the flow direction of air-flow, close described air inlet (1) side that described charging aperture (2) is positioned at the described sedimentation aggregate bin (4) of most upstream is arranged.
6. the gas according to claim 4 or 5 and carry out the device of heat exchange between solid particle, it is characterized in that, adjacent two described sedimentation aggregate bins (4) are connected.
7. between gas according to claim 1 and solid particle, carry out the device of heat exchange, it is characterized in that, along the flow direction of gas, the bottom of the sedimentation aggregate bin (4) of described adjacent heat exchange unit connects the top of the gas channel (3) of described previous stage heat exchange unit and is connected with described gas channel (3), and the bottom connectivity part of the sedimentation aggregate bin (4) of described adjacent heat exchange unit is positioned at the sedimentation aggregate bin (4) of described previous stage heat exchange unit and the top of its gas channel (3) open communication.
8. between gas according to claim 1 and solid particle, carry out the device of heat exchange, it is characterized in that, along the flow direction of gas, the charging aperture (2) of described previous heat exchange unit is connected with the bottom of the sedimentation aggregate bin (4) of described adjacent heat exchange unit.
9. carry out the device of heat exchange between gas according to claim 8 and solid particle, it is characterized in that, be made up of level Four heat exchange unit, every grade of described heat exchange unit is provided with one or two sedimentation aggregate bin (4).
10. carry out the device of heat exchange between gas according to claim 1 and 2 and solid particle, it is characterized in that, described gas channel (3) is rectangle.
Carry out the device of heat exchange between 11. gases according to claim 1 and 2 and solid particle, it is characterized in that, described sedimentation aggregate bin (4) is infundibulate.
Carry out the device of heat exchange between 12. gases according to claim 1 and 2 and solid particle, it is characterized in that, the gas flow rate in described gas channel (3) is 0.2 ~ 2 meter per second.
Carry out the device of heat exchange between 13. gases according to claim 12 and solid particle, it is characterized in that, the gas flow rate in described gas channel (3) is 0.2 ~ 1 meter per second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110431967.1A CN102607297B (en) | 2011-12-21 | 2011-12-21 | Device for carrying out heat exchange between gas and solid particulate matters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110431967.1A CN102607297B (en) | 2011-12-21 | 2011-12-21 | Device for carrying out heat exchange between gas and solid particulate matters |
Publications (2)
| Publication Number | Publication Date |
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| CN102607297A CN102607297A (en) | 2012-07-25 |
| CN102607297B true CN102607297B (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110431967.1A Active CN102607297B (en) | 2011-12-21 | 2011-12-21 | Device for carrying out heat exchange between gas and solid particulate matters |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101382392A (en) * | 2008-10-21 | 2009-03-11 | 鞍山市华杰建材技术开发有限公司 | Calandria preheater |
| CN102288044A (en) * | 2011-07-22 | 2011-12-21 | 湖南天水蓝能源科技有限公司 | Pipeless heat exchanger and residual-heat recovery system |
| CN202350577U (en) * | 2011-12-21 | 2012-07-25 | 卓卫民 | Device of exchanging heat between gas and solid particulates |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5735294A (en) * | 1980-08-13 | 1982-02-25 | Kobe Steel Ltd | Heat accumulative type heat exchanging method |
| JPS59105817A (en) * | 1982-12-08 | 1984-06-19 | Mitsubishi Heavy Ind Ltd | Dust collection apparatus for waste heat recovery |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101382392A (en) * | 2008-10-21 | 2009-03-11 | 鞍山市华杰建材技术开发有限公司 | Calandria preheater |
| CN102288044A (en) * | 2011-07-22 | 2011-12-21 | 湖南天水蓝能源科技有限公司 | Pipeless heat exchanger and residual-heat recovery system |
| CN202350577U (en) * | 2011-12-21 | 2012-07-25 | 卓卫民 | Device of exchanging heat between gas and solid particulates |
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| CN102607297A (en) | 2012-07-25 |
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