CN113532098A - Exhaust heat recovery and exhaust impurity removal integrated method - Google Patents
Exhaust heat recovery and exhaust impurity removal integrated method Download PDFInfo
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- CN113532098A CN113532098A CN202110570028.9A CN202110570028A CN113532098A CN 113532098 A CN113532098 A CN 113532098A CN 202110570028 A CN202110570028 A CN 202110570028A CN 113532098 A CN113532098 A CN 113532098A
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- exhaust
- impurity removal
- wall
- fresh air
- impurity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/005—Treatment of dryer exhaust gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses an exhaust heat recovery and exhaust impurity removal integrated method, which comprises the following steps: introducing exhaust gas into an impurity removing chamber, and blowing the exhaust gas into an impurity removing wall internally provided with a fresh air channel through an exhaust inlet of the impurity removing chamber; the impurity removal wall limits the flow space and the flow direction of the exhaust gas, reduces the flow speed of the exhaust gas, and the impurities sink and fall under the action of gravity; meanwhile, the exhaust gas is contacted with the impurity removal wall, and heat is transferred to the impurity removal wall from the exhaust gas and then transferred to the fresh air in the fresh air channel from the impurity removal wall; leading the fresh air after obtaining the heat to a heating device or a cooling device of the dryer; and the exhaust gas after impurity removal is discharged from an exhaust outlet of the impurity removal chamber. The invention can complete heat recovery while removing impurities, effectively improve refrigerating capacity or drying capacity, and is particularly suitable for drying rice.
Description
Technical Field
The invention relates to an exhaust treatment method of a grain dryer, in particular to an exhaust heat recovery and exhaust impurity removal integrated method.
Background
In modern agricultural mechanized production, grain is dried by drying equipment after being harvested for subsequent processing or long-term storage. The existing drying equipment mostly adopts a heat pump dryer, and because the efficiency of the heat pump dryer is related to the ambient temperature, that is, the heating efficiency and the drying effect are reduced along with the reduction of the ambient temperature, the heat pump dryer generally has the problem of poor use effect in autumn and winter.
Because the exhaust temperature of grain drying is generally higher than the temperature of ambient air, utilize exhaust and new trend to carry out the heat exchange, can preheat the new trend, when the new trend heat is used for being absorbed by the heat pump evaporator, can improve the efficiency of heating, can improve equipment's drying capacity when the new trend is used for the material drying.
The existing heat exchanger (heat recovery device) mainly comprises an exhaust channel and a fresh air channel, and is usually used for the occasions where fresh air and exhaust are relatively clean due to the design reasons of compact structure and small volume. Most of exhaust gas for grain drying contains impurity particles or straws with larger volume, and the exhaust gas can not directly flow through an evaporator or a condenser and can be recycled only through impurity removal treatment, so that the existing heat recovery method is not suitable for heat recovery of exhaust gas for grain drying, particularly for rice drying.
Disclosure of Invention
The invention aims to overcome the existing problems and provides an exhaust heat recovery and exhaust impurity removal integrated method, which can complete heat recovery while removing impurities, effectively improve refrigerating capacity or drying capacity and is particularly suitable for drying rice.
The purpose of the invention is realized by the following technical scheme:
an exhaust heat recovery and exhaust impurity removal integrated method comprises the following steps:
introducing exhaust gas into an impurity removing chamber, and blowing the exhaust gas into an impurity removing wall internally provided with a fresh air channel through an exhaust inlet of the impurity removing chamber;
the impurity removal wall limits the flow space and the flow direction of the exhaust gas, reduces the flow speed of the exhaust gas, and the impurities sink and fall under the action of gravity; meanwhile, the exhaust gas is contacted with the impurity removal wall, and heat is transferred to the impurity removal wall from the exhaust gas and then transferred to the fresh air in the fresh air channel from the impurity removal wall; leading the fresh air after obtaining the heat to a heating device or a cooling device of the dryer;
and the exhaust gas after impurity removal is discharged from an exhaust outlet of the impurity removal chamber.
According to a preferred scheme of the invention, an impurity removing wall is arranged in the impurity removing chamber, a fresh air channel is arranged in the impurity removing wall, and fresh air is introduced into the fresh air channel;
the trash wall is erected in front of the exhaust inlet of the trash chamber.
Preferably, the fresh air channel is divided into a main channel and branch channels, and the branch channels are arranged in the impurity removing walls, so that the number of the branch channels is the same as that of the impurity removing walls;
two main channels are provided and a subchannel is connected between the two main channels.
Preferably, the impurity removing chamber is divided into an inner wall and an outer wall, two inner walls are arranged, and the two inner walls are respectively arranged at two ends of the impurity removing wall;
a main channel is formed in the space between the inner wall and the outer wall; the impurity removing wall and the inner wall are made of heat conducting materials. Like this, encircle the main entrance outside exhausting in the edulcoration room, including set up the subchannel in the edulcoration wall, be equivalent to whole new trend passageway and surround the exhaust in three direction to carry out the heat transfer simultaneously in a plurality of positions of edulcoration room, be favorable to improving heat exchange efficiency.
In a preferred embodiment of the present invention, the exhaust gas inlet and the exhaust gas outlet of the trash chamber are provided on two opposite side walls, respectively, and the trash wall is disposed between the exhaust gas inlet and the exhaust gas outlet.
Preferably, at least two trash walls are arranged between the exhaust inlet and the exhaust outlet; wherein, the bottom of the impurity removing wall close to the exhaust inlet is fixed on the bottom surface of the impurity removing chamber; the top of the impurity removing wall close to the exhaust outlet is fixed on the top surface of the impurity removing chamber. This allows a curved exhaust path to be constructed, further reducing the exhaust gas impurity rate.
According to a preferred scheme of the invention, a fresh air fan is arranged in a working area of the dryer, and the fresh air fan sends fresh air to the working area of the dryer; the working area of the dryer is an area where the air at the outlet of the fresh air fan is utilized by a heating device or a cooling device of the dryer.
Compared with the prior art, the invention has the following beneficial effects:
1. the fresh air channel is arranged in the impurity removing wall, exhaust gas is in contact with the impurity removing wall in the impurity removing process, heat of the exhaust gas is transferred to the impurity removing wall and then transferred to the fresh air in the fresh air channel from the impurity removing wall, so that heat recovery is realized while impurity removal is carried out, the fresh air after heat acquisition is led to a heating device or a cooling device of a dryer, the refrigeration efficiency or the drying capacity can be effectively improved, and the fresh air channel is particularly suitable for drying rice.
2. Through setting up new trend passageway in the edulcoration wall, have advantages such as heat transfer area is big, heat exchange efficiency height.
Drawings
FIG. 1 is a schematic diagram of the work flow of the exhaust heat recovery and exhaust impurity removal integrated method in the invention.
FIG. 2 is a side sectional view of an integrated structure to which the exhaust heat recovery and exhaust impurity removal integrated method of the present invention is applied.
FIG. 3 is a sectional plan view of an integrated structure to which the exhaust heat recovery and exhaust impurity removal integrated method of the present invention is applied.
Detailed Description
In order to make those skilled in the art understand the technical solutions of the present invention well, the following description of the present invention is provided with reference to the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
Referring to fig. 1 to 3, the exhaust heat recovery and exhaust impurity removal integrated method in the present embodiment includes the following steps:
the exhaust gas is introduced into the impurity removing chamber 1 and blown to the impurity removing wall 2 provided with a fresh air channel 3 from the exhaust inlet 1-1 of the impurity removing chamber 1.
The impurity removal wall 2 limits the flow space and the flow direction of the exhaust gas, reduces the flow speed of the exhaust gas, and the impurities sink and fall under the action of gravity; meanwhile, the exhaust gas contacts with the impurity removal wall 2, and heat is transferred to the impurity removal wall 2 from the exhaust gas and then transferred to the fresh air in the fresh air channel 3 from the impurity removal wall 2; and leading the fresh air after heat acquisition to a heating device or a cooling device of the dryer.
The exhaust gas after impurity removal is discharged from an exhaust outlet 1-2 of the impurity removal chamber 1.
Referring to fig. 1-3, an impurity removing wall 2 is arranged in an impurity removing chamber 1, a fresh air channel 3 is arranged in the impurity removing wall 2, and fresh air is introduced into the fresh air channel 3; and the trash wall 2 is erected in front of the exhaust gas inlet 1-1 of the trash chamber 1.
Further, the fresh air channel 3 is divided into a main channel and branch channels, and the branch channels are arranged in the impurity removing wall 2, so that the number of the branch channels is the same as that of the impurity removing wall 2; two main channels are provided and a subchannel is connected between the two main channels.
Further, the impurity removing chamber 1 is divided into an inner wall 5 and an outer wall 6, two inner walls 5 are arranged, and the two inner walls 5 are respectively arranged at two ends of the impurity removing wall 2; the space between the inner wall 5 and the outer wall 6 constitutes a main passage; the decontaminating wall 2 and the inner wall 5 are made of heat conducting material. Like this, encircle the main entrance outside exhaust in edulcoration room 1, including the subchannel of setting in edulcoration wall 2, be equivalent to whole new trend passageway 3 and surround the exhaust in three direction to carry out the heat transfer simultaneously in a plurality of positions of edulcoration room 1, be favorable to improving heat exchange efficiency.
Referring to FIGS. 1 to 3, an exhaust inlet 1-1 and an exhaust outlet 1-2 of an impurity removing chamber 1 are respectively provided on two opposite side walls, and an impurity removing wall 2 is disposed between the exhaust inlet 1-1 and the exhaust outlet 1-2. Preferably, at least two trash walls 2 are disposed between the exhaust gas inlet 1-1 and the exhaust gas outlet 1-2; wherein, the bottom of the impurity removing wall 2 close to the exhaust inlet 1-1 is fixed on the bottom surface of the impurity removing chamber 1; the top of the trash wall 2 near the exhaust outlet 1-2 is fixed on the top surface of the trash chamber 1. This allows a curved exhaust path to be constructed, further reducing the exhaust gas impurity rate.
Referring to fig. 2-3, a fresh air fan 4 is arranged in the working area of the dryer, and the fresh air fan 4 sends fresh air into the working area of the dryer; the working area of the dryer is an area where the air at the outlet of the fresh air fan 4 is utilized by a heating device or a cooling device of the dryer. Specifically, new trend fan 4 comprises the inside fan of desiccator, can need not decide independent setting like this, reduces the normal cost of equipment.
The present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents and are included in the scope of the present invention.
Claims (7)
1. An exhaust heat recovery and exhaust impurity removal integrated method is characterized by comprising the following steps:
introducing exhaust gas into an impurity removing chamber, and blowing the exhaust gas into an impurity removing wall internally provided with a fresh air channel through an exhaust inlet of the impurity removing chamber;
the impurity removal wall limits the flow space and the flow direction of the exhaust gas, reduces the flow speed of the exhaust gas, and the impurities sink and fall under the action of gravity; meanwhile, the exhaust gas is contacted with the impurity removal wall, and heat is transferred to the impurity removal wall from the exhaust gas and then transferred to the fresh air in the fresh air channel from the impurity removal wall; leading the fresh air after obtaining the heat to a heating device or a cooling device of the dryer;
and the exhaust gas after impurity removal is discharged from an exhaust outlet of the impurity removal chamber.
2. The integrated exhaust heat recovery and exhaust impurity removal method according to claim 1, wherein an impurity removal wall is arranged in the impurity removal chamber, a fresh air channel is arranged in the impurity removal wall, and fresh air is introduced into the fresh air channel;
the trash wall is erected in front of the exhaust inlet of the trash chamber.
3. The exhaust heat recovery and exhaust impurity removal integrated method according to claim 2, wherein the fresh air channel is divided into a main channel and branch channels, and the branch channels are arranged in the impurity removal walls, so that the number of the branch channels is the same as that of the impurity removal walls;
two main channels are provided and a subchannel is connected between the two main channels.
4. The integrated exhaust heat recovery and exhaust impurity removal method according to claim 3, wherein the impurity removal chamber is divided into an inner wall and an outer wall, two inner walls are provided, and the two inner walls are respectively placed at both ends of the impurity removal wall;
the space between the inner wall and the outer wall constitutes the main passage.
5. The integrated exhaust heat recovery and exhaust purge method according to claim 1, wherein the purge inlet and the exhaust outlet of the purge chamber are respectively provided on two opposite sidewalls, and a purge wall is disposed between the exhaust inlet and the exhaust outlet.
6. The integrated exhaust heat recovery and exhaust impurity removal method according to claim 5, wherein at least two impurity removal walls are disposed between the exhaust inlet and the exhaust outlet; wherein, the bottom of the impurity removing wall close to the exhaust inlet is fixed on the bottom surface of the impurity removing chamber; the top of the impurity removing wall close to the exhaust outlet is fixed on the top surface of the impurity removing chamber, a bent exhaust path is constructed, and the exhaust impurity rate is reduced.
7. The integrated exhaust heat recovery and exhaust impurity removal method according to claim 1, wherein a fresh air fan is arranged in a working area of the dryer, and the fresh air fan sends fresh air into the working area of the dryer; the working area of the dryer is an area where the air at the outlet of the fresh air fan is utilized by a heating device or a cooling device of the dryer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110570028.9A CN113532098A (en) | 2021-05-24 | 2021-05-24 | Exhaust heat recovery and exhaust impurity removal integrated method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110570028.9A CN113532098A (en) | 2021-05-24 | 2021-05-24 | Exhaust heat recovery and exhaust impurity removal integrated method |
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| CN113532098A true CN113532098A (en) | 2021-10-22 |
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| CN202110570028.9A Pending CN113532098A (en) | 2021-05-24 | 2021-05-24 | Exhaust heat recovery and exhaust impurity removal integrated method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202283435U (en) * | 2011-11-01 | 2012-06-27 | 高艳华 | Energy-saving dust remover |
| CN103361086A (en) * | 2012-04-10 | 2013-10-23 | 北京信力筑正新能源技术有限公司 | Primary dust remover for dry quenching |
| CN105344163A (en) * | 2014-08-22 | 2016-02-24 | 陈鑫 | Exhaust-gas double purifier |
| CN210645487U (en) * | 2019-07-02 | 2020-06-02 | 山西正源昌农牧科技股份有限公司 | Dust removing chamber |
| CN211753591U (en) * | 2020-01-15 | 2020-10-27 | 成都睿鸿环保科技有限公司 | Metal powder recovery device |
-
2021
- 2021-05-24 CN CN202110570028.9A patent/CN113532098A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202283435U (en) * | 2011-11-01 | 2012-06-27 | 高艳华 | Energy-saving dust remover |
| CN103361086A (en) * | 2012-04-10 | 2013-10-23 | 北京信力筑正新能源技术有限公司 | Primary dust remover for dry quenching |
| CN105344163A (en) * | 2014-08-22 | 2016-02-24 | 陈鑫 | Exhaust-gas double purifier |
| CN210645487U (en) * | 2019-07-02 | 2020-06-02 | 山西正源昌农牧科技股份有限公司 | Dust removing chamber |
| CN211753591U (en) * | 2020-01-15 | 2020-10-27 | 成都睿鸿环保科技有限公司 | Metal powder recovery device |
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