CN113758346A - Vertical type internal and external double-auger solid particle power and heat combined recovery device - Google Patents
Vertical type internal and external double-auger solid particle power and heat combined recovery device Download PDFInfo
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- CN113758346A CN113758346A CN202111035795.6A CN202111035795A CN113758346A CN 113758346 A CN113758346 A CN 113758346A CN 202111035795 A CN202111035795 A CN 202111035795A CN 113758346 A CN113758346 A CN 113758346A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
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Abstract
The invention discloses a vertical type internal and external double-auger solid particle power and heat combined recovery device, which comprises an outer cylinder and an inner cylinder, wherein the outer cylinder and the inner cylinder have the same axis, the inner cylinder is used as a hot material channel, and a space between the outer cylinder and the inner cylinder is used as a cold material channel; the inner wall of the inner barrel is provided with an inner packing auger, the outer wall of the inner barrel is provided with an outer packing auger, the rotating directions of the inner packing auger and the outer packing auger are opposite, and the pitch ratio of the inner packing auger to the outer packing auger is 1.5-3. The device simultaneously realizes the combined recovery of the work amount and the heat of the high-temperature solid, the gravitational potential energy of the hot material is converted into the kinetic energy for lifting the cold material through the internal and external double-auger structure in the using process of the device, the reverse heat exchange of the cold material and the hot material is realized, and the average heat transfer temperature difference is improved, so that the continuous and efficient exchange and recovery of the work amount and the heat are realized.
Description
Technical Field
The invention relates to the field of energy recovery, in particular to a combined recovery device for power and heat between vertical type internal and external double-auger solid particles.
Background
The annual output of dangerous wastes in the world is more than 3.3 hundred million tons, and the high-temperature treatment means mainly comprises pyrolysis and incineration. Because of the high temperature requirements, the treated solid product generally has a large amount of energy, and the feedstock is generally preheated before treatment.
At present, in the recovery of high-temperature solid energy, the main mode is wind-load heat exchange, but the heat carrying capacity of gas is low, so that equipment is huge, the structural stability is poor, the recovery efficiency is not high, the recovered energy is only limited to heat energy, and for a device with a main body higher than the ground due to a structure, not only product potential energy is wasted, but also an additional raw material lifting device is needed, so that the system is complex and the electric power consumption is high.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides a combined recycling device for power and heat between vertical type internal and external double-auger solid particles.
In order to achieve the purpose, the invention provides the following technical scheme:
a vertical internal and external double-auger solid particle power and heat combined recovery device comprises an outer cylinder and an inner cylinder, wherein the outer cylinder and the inner cylinder have the same axis, the inner cylinder is used as a hot material channel, and a space between the outer cylinder and the inner cylinder is used as a cold material channel; the inner wall of the inner barrel is provided with an inner packing auger, the outer wall of the inner barrel is provided with an outer packing auger, the rotating directions of the inner packing auger and the outer packing auger are opposite, and the pitch ratio of the inner packing auger to the outer packing auger is 1.5-3.
Furthermore, the upper part of the outer barrel is provided with a cold material outlet, and the lower part of the outer barrel is provided with a cold material inlet.
Furthermore, the upper part of the inner cylinder is provided with a hot material inlet, and the lower part of the inner cylinder is provided with a hot material outlet.
Further, still include the jackshaft, inside auger is connected with the jackshaft.
Further, the device also comprises a motor which is configured to drive the inner barrel to rotate.
Further, an outer cylinder cover is arranged at the top end of the outer cylinder.
Furthermore, the motor is connected with the small bevel gear, the inner cylinder is connected with the large bevel gear, and the small bevel gear is meshed with the large bevel gear.
Furthermore, the upper end and the lower end of the inner cylinder extend out of the outer cylinder.
Further, the internal packing auger is a double-head packing auger.
Furthermore, the external packing auger is a single-head packing auger or a double-head packing auger.
The invention has the beneficial effects that:
(1) the device simultaneously realizes the combined recovery of the work amount and the heat of the high-temperature solid, the gravitational potential energy of the hot material is converted into the kinetic energy for lifting the cold material through the internal and external double-auger structure in the using process of the device, the reverse heat exchange of the cold material and the hot material is realized, and the average heat transfer temperature difference is improved, so that the continuous and efficient exchange and recovery of the work amount and the heat are realized. The invention recovers the heat in the solid product to heat the raw material (cold material), and can effectively recover the energy.
(2) The device integrates a solid waste heat recovery device, a material lifting (namely, work quantity recovery) device and a preheating device, and simplifies the whole structure.
Drawings
FIG. 1 is a schematic structural diagram of a combined vertical internal and external double-auger solid particle power and heat recovery device.
Fig. 2 is a partial schematic view of the vertical internal and external double-auger solid particle power and heat combined recovery device of the invention (in order to show the structures of the internal auger and the external auger, partial structures of the inner cylinder and the outer cylinder are hidden).
Reference numbers in the figures: 1-outer cylinder, 2-inner cylinder, 3-middle shaft, 4-inner auger, 5-outer auger 5, 6-outer cylinder cover, 7-small bevel gear, 8-large bevel gear, 9-hot material inlet, 10-hot material outlet, 11-cold material inlet, 12-cold material outlet, and 13-motor; 4a and 4b respectively show two ends of the internal packing auger.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms referred to herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar words throughout this application are not to be construed as limiting in number, and may refer to the singular or the plural. The present application is directed to the use of the terms "including," "comprising," "having," and any variations thereof, which are intended to cover non-exclusive inclusions; reference to "connected," "coupled," and the like in this application is not intended to be limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Reference herein to "a plurality" means greater than or equal to two. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. Reference herein to the terms "first," "second," "third," and the like, are merely to distinguish similar objects and do not denote a particular ordering for the objects.
As shown in fig. 1-2, a vertical internal and external double-auger solid particle power and heat combined recovery device comprises an outer cylinder 1 and an inner cylinder 2, wherein the outer cylinder 1 and the inner cylinder 2 have the same axis, the inner cylinder 2 is used as a hot material channel, and a space between the outer cylinder 1 and the inner cylinder 2 is used as a cold material channel; the inner wall of the inner barrel 2 is provided with an inner packing auger 4 (the inner packing auger and the inner wall of the inner barrel can be fixedly connected, for example, connected together in a welding mode), the outer wall of the inner barrel 2 is provided with an outer packing auger 5, the rotating directions of the inner packing auger 4 and the outer packing auger 5 are opposite, and the pitch ratio of the inner packing auger 4 to the outer packing auger 5 is 1.5-3.
When the pitch ratio of the internal auger to the external auger is less than 1.5, the internal hot material moves downwards, the driving force to the inner cylinder after friction is overcome is insufficient, and the power recovery effect is poor; when the pitch ratio is larger than 3, the descending speed of the internal hot material is too high, and the heat recovery effect is poor. Therefore, the pitch ratio of the inner packing auger 4 to the outer packing auger 5 is 1.5-3, so that the simultaneous recovery of heat and work can be better realized, and the recovery amount of the inner packing auger 4 and the work can reach a better state.
The hot material depends on self gravity to descend from top to bottom in the inner barrel, the inner packing auger 4 can be acted, the inner packing auger 4, the inner barrel 2 and the outer packing auger 5 can rotate anticlockwise together, the outer packing auger 5 rotates anticlockwise to lift the cold material, and therefore continuous and efficient recovery of work amount is achieved. Cold and hot materials move reversely, and the cold materials are in direct contact with the outer wall of the inner barrel, so that heat can be exchanged and recovered.
In some preferred modes, the upper part of the outer barrel 1 is provided with a cold material outlet 12, and the lower part of the outer barrel 1 is provided with a cold material inlet 11. In some preferred modes, the upper part of the inner barrel 2 is provided with a hot material inlet 9, and the lower part of the inner barrel 2 is provided with a hot material outlet 10.
In some preferred modes, the recovery device further comprises an intermediate shaft 3, the intermediate shaft 3 is located on the inner barrel 2, and the inner packing auger 4 is connected with the intermediate shaft 3. In some preferred modes, the recovery device further comprises a motor 13, and in some embodiments, the motor 13 is in transmission with the inner barrel 2 through a bevel gear. Ensure smooth descending and easy collection of hot materials. In this embodiment, as shown in fig. 1, the large bevel gear is connected to the inner cylinder, the large bevel gear is engaged with the small bevel gear, and the small bevel gear is connected to the motor. The motor provides power, and through gear engagement, it is rotatory to drive the inner tube, and the inner tube drives inside auger, outside auger rotation. The jackshaft is connected with inside auger, plays the effect of restriction hot material, avoids hot material down at a high speed, leads to the heat recovery effect not good.
In some preferred modes, the top end of the outer cylinder 1 is provided with an outer cylinder cover 6.
As shown in fig. 1, the outer cylinder 1 is a cylinder, and has a cold material inlet 11 at its lower part and a cold material outlet 12 at its upper part, and the outer cylinder 1 has an annular baffle at its bottom end for allowing only the inner cylinder 2 to extend and an annular outer cylinder cover 6 at its top end for allowing only the inner cylinder 2 to extend.
In some preferred modes, the upper end and the lower end of the inner cylinder 2 extend out of the outer cylinder 1.
In some preferred forms, the inner auger 4 is a double-head auger. In fig. 1, reference numerals 4a and 4b denote both ends of the inner packing auger, respectively. In some preferred forms, the outer auger 5 is a single head or double head auger.
Specifically, as shown in fig. 1-2, an external cold material channel is formed by an outer cylinder wall and an inner cylinder wall, an internal hot material channel is formed by an inner cylinder 2 and an intermediate shaft 3, the hot material enters from a hot material inlet 9 and descends to a hot material outlet 10 from top to bottom in the channel depending on self gravity, the hot material acts on an external packing auger 5 in the descending process, the external packing auger 5, the inner cylinder 2 and an internal packing auger 4 can rotate together, the external packing auger 5 plays a role in lifting the cold material and lifting the cold material to a cold material outlet 12, so that the power consumption of a motor 13 is reduced, the power recovery is realized, the cold material and the hot material respectively move reversely outside and inside the inner cylinder 2, and the cold material and the hot material are respectively in direct contact with the inner cylinder wall, and the heat exchange and recovery are convenient to realize.
The use process of the vertical type internal and external double-auger solid particle power and heat combined recovery device provided by the invention can be that, for example, high-temperature solid products generated by pyrolysis treatment of hazardous waste directly enter the inner barrel 2 through the hot material inlet 9, the pitch of the internal auger 4 is large (the ratio of the pitch of the external auger to the inner diameter of the outer barrel is 0.8, the pitch of the internal auger is determined after the pitch of the external auger is determined, in the embodiment, the pitch of the external auger is determined to be 0.4m by the inner diameter of the outer barrel, and further the pitch of the internal auger is determined to be 1m), the spiral inclination angle is large, the hot materials can better descend by means of self gravity, the double-auger design can fully utilize the materials of the inner barrel 2 to do work, and the hot materials can generate large torque to the inner barrel 2 when descending in an internal channel formed between the inner barrel 2 and the intermediate shaft 3 because the diameter of the intermediate shaft is large (in the embodiment, the ratio of the intermediate shaft diameter to the inner barrel inner diameter is 0.5), and the cold material entering from the cold material inlet 11 is climbed by the aid of the external auger 5, power consumption of the motor 13 is reduced, the cold material climbs to the position of the cold material outlet 12, preheating and height lifting are completed, the preheated cold material leaves the device with the aid of the outer cylinder cover 6, and pyrolysis preparation is completed.
The solid product produced in the pyrolysis process and the cold material are in reverse movement, the whole process has large heat transfer temperature difference, the flow of the solid product is smaller than that of the raw material (cold material), the temperature of the raw material is lower, and the inner barrel 2 is made of a low-heat-resistance material, so that the large heat transfer efficiency can be ensured, and the full recycling of the energy of the high-temperature solid product is realized.
By adopting the recovery device, in the specific operation, the flow of cold materials is 200kg/h, the flow of hot materials (namely solid products) is 153kg/h, the solid products go down to promote the cold materials to be lifted, the work recovery is realized, the energy consumption of the motor is reduced by 38.25%, the cold materials and the hot materials run in the reverse direction, the heat transfer temperature difference in the reverse direction process is large, the cold materials can be preheated to 200 ℃, the heat recovery is realized, the recovery rate reaches 48.16%, and the energy (work quantity and heat) of the high-temperature solid products can be fully recovered in the whole process.
The solid heat is generally recovered through intermediate medium among the current device to air or water are the carrier, with heat from hot material transmission to cold material, and heat exchange efficiency is low, and this device is solid direct heat transfer, and heat recovery rate is higher, and realizes that the merit volume is retrieved and the device integration, and the advantage is obvious.
It should be understood by those skilled in the art that various features of the above-described embodiments can be combined in any combination, and for the sake of brevity, all possible combinations of features in the above-described embodiments are not described in detail, but rather, all combinations of features which are not inconsistent with each other should be construed as being within the scope of the present disclosure.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application.
Claims (10)
1. A vertical internal and external double-auger solid particle power and heat combined recovery device is characterized by comprising an outer cylinder and an inner cylinder, wherein the outer cylinder and the inner cylinder have the same axis, the inner cylinder is used as a hot material channel, and a space between the outer cylinder and the inner cylinder is used as a cold material channel; the inner wall of the inner barrel is provided with an inner packing auger, the outer wall of the inner barrel is provided with an outer packing auger, the rotating directions of the inner packing auger and the outer packing auger are opposite, and the pitch ratio of the inner packing auger to the outer packing auger is 1.5-3.
2. The vertical internal and external double auger solid particle power and heat combined recovery device as claimed in claim 1, wherein the upper part of the outer cylinder is provided with a cold material outlet, and the lower part of the outer cylinder is provided with a cold material inlet.
3. The vertical internal and external double-auger solid particle power and heat combined recovery device as claimed in claim 1, wherein the upper part of the inner cylinder is provided with a hot material inlet, and the lower part of the inner cylinder is provided with a hot material outlet.
4. The vertical type internal and external double-auger solid particle power and heat combined recovery device as claimed in claim 1, further comprising a middle shaft, wherein the internal auger is connected with the middle shaft.
5. The vertical internal and external double auger solid particle power and heat combined recovery device according to claim 1, further comprising a motor configured to drive the inner cylinder to rotate.
6. The vertical type internal and external double auger solid particle power and heat combined recovery device as claimed in claim 1, wherein an external cylinder cover is arranged at the top end of the external cylinder.
7. The vertical internal and external double auger solid particle power and heat combined recovery device as claimed in claim 5, wherein the motor is connected with the small bevel gear, the inner cylinder is connected with the large bevel gear, and the small bevel gear and the large bevel gear are engaged with each other.
8. The vertical type internal and external double auger solid particle power and heat combined recovery device as claimed in claim 1, wherein the upper end and the lower end of the inner cylinder extend out of the outer cylinder.
9. The vertical type internal and external double-auger solid particle power and heat combined recovery device as claimed in claim 1, wherein the internal auger is a double-auger.
10. The vertical type internal and external double-auger solid particle power and heat combined recovery device as claimed in claim 1, wherein the external auger is a single-head or double-head auger.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111035795.6A CN113758346A (en) | 2021-09-03 | 2021-09-03 | Vertical type internal and external double-auger solid particle power and heat combined recovery device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111035795.6A CN113758346A (en) | 2021-09-03 | 2021-09-03 | Vertical type internal and external double-auger solid particle power and heat combined recovery device |
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| CN113758346A true CN113758346A (en) | 2021-12-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116182615A (en) * | 2023-04-26 | 2023-05-30 | 四川优浦达科技有限公司 | High-efficiency recovery device and method for waste liquid and waste heat of wastewater treatment plant |
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| CN2092079U (en) * | 1990-10-17 | 1992-01-01 | 吴锡波 | Carrying device of heat-transfer medium for heat exchanger |
| CN201935609U (en) * | 2011-01-26 | 2011-08-17 | 中节能六合天融环保科技有限公司 | Helical fin cooler for cooling high-temperature powdery materials |
| CN108302959A (en) * | 2017-12-12 | 2018-07-20 | 中国石油天然气集团公司 | Heat-exchanger rig |
| CN110686533A (en) * | 2019-07-22 | 2020-01-14 | 中国航空规划设计研究总院有限公司 | Anhydrous heat energy secondary utilization device for thermal power plant |
| CN111285033A (en) * | 2018-12-06 | 2020-06-16 | 北方奥钛纳米技术有限公司 | Material conveying device |
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2021
- 2021-09-03 CN CN202111035795.6A patent/CN113758346A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2092079U (en) * | 1990-10-17 | 1992-01-01 | 吴锡波 | Carrying device of heat-transfer medium for heat exchanger |
| CN201935609U (en) * | 2011-01-26 | 2011-08-17 | 中节能六合天融环保科技有限公司 | Helical fin cooler for cooling high-temperature powdery materials |
| CN108302959A (en) * | 2017-12-12 | 2018-07-20 | 中国石油天然气集团公司 | Heat-exchanger rig |
| CN111285033A (en) * | 2018-12-06 | 2020-06-16 | 北方奥钛纳米技术有限公司 | Material conveying device |
| CN110686533A (en) * | 2019-07-22 | 2020-01-14 | 中国航空规划设计研究总院有限公司 | Anhydrous heat energy secondary utilization device for thermal power plant |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116182615A (en) * | 2023-04-26 | 2023-05-30 | 四川优浦达科技有限公司 | High-efficiency recovery device and method for waste liquid and waste heat of wastewater treatment plant |
| CN116182615B (en) * | 2023-04-26 | 2023-06-27 | 四川优浦达科技有限公司 | High-efficiency recovery device and method for waste liquid and waste heat of wastewater treatment plant |
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