阅读说明：本技术 一种液体热量回收与除杂一体化方法 (Liquid heat recovery and impurity removal integrated method ) 是由 陈永春 李浩权 卢素珊 龙成树 吴耀森 刘琼瑜 胡光华 刘清化 叶开愚 曾小辉 于 2021-05-24 设计创作，主要内容包括：本发明公开一种液体热量回收与除杂一体化方法,该一体化方法包括以下步骤：将排气通入除杂室中,排气从除杂室的排气进口吹向由多个液体输送管构成的除杂墙；将液体通入多个液体输送管中,液体沿着液体输送管移动至排气进口之前；除杂墙限制排气的流动空间和流动方向,降低排气的流速,杂质在重力作用下沉降下来；与此同时,排气与除杂墙接触,热量从排气传递至液体输送管上,再从液体输送管传递至液体上；将获取热量后的液体通往干燥机的蒸发器中；除杂后的排气从除杂室的排气出口排出。本发明能够在除杂的同时通过液体回收排气的热量,不仅具有较大的传热温差,可减小换热面积；而且还可将液体通往热泵的蒸发器,提高蒸发温度。(The invention discloses a liquid heat recovery and impurity removal integrated method, which comprises the following steps: introducing exhaust gas into an impurity removing chamber, wherein the exhaust gas is blown to an impurity removing wall formed by a plurality of liquid conveying pipes from an exhaust inlet of the impurity removing chamber; introducing liquid into a plurality of liquid conveying pipes, wherein the liquid moves to the front of an exhaust inlet along the liquid conveying pipes; 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 removing wall, and heat is transferred to the liquid conveying pipe from the exhaust gas and then is transferred to the liquid from the liquid conveying pipe; leading the liquid after obtaining heat to an evaporator of a dryer; and the exhaust gas after impurity removal is discharged from an exhaust outlet of the impurity removal chamber. The invention can recover the heat of exhaust through liquid while removing impurities, not only has larger heat transfer temperature difference, but also can reduce the heat exchange area; but also can lead the liquid to the evaporator of the heat pump to increase the evaporation temperature.)

1. A liquid heat recovery and impurity removal integrated method is characterized by comprising the following steps:

introducing exhaust gas into an impurity removing chamber, wherein the exhaust gas is blown to an impurity removing wall formed by a plurality of liquid conveying pipes from an exhaust inlet of the impurity removing chamber; introducing liquid into a plurality of liquid conveying pipes, wherein the liquid moves to the front of an exhaust inlet along the liquid conveying pipes;

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 removing wall, and heat is transferred to the liquid conveying pipe from the exhaust gas and then is transferred to the liquid from the liquid conveying pipe; leading the liquid after obtaining heat to an evaporator of a dryer;

and the exhaust gas after impurity removal is discharged from an exhaust outlet of the impurity removal chamber.

2. A liquid heat recovery and impurity removal integrated method according to claim 1, wherein an impurity removal wall is provided in the impurity removal chamber, the impurity removal wall being constituted by a plurality of liquid transport pipes arranged vertically without gaps; erecting an impurity removal wall in front of an exhaust inlet of an impurity removal chamber;

liquid is introduced into the liquid conveying pipes, heat exchange is carried out before the liquid moves to the exhaust inlet, and the liquid after heat exchange is conveyed to the evaporator of the dryer through the liquid conveying pipes.

3. The integrated liquid heat recovery and impurity removal method according to claim 1, wherein an exhaust inlet and an exhaust outlet of the impurity removal chamber are provided on two opposite side walls, respectively, and an impurity removal wall is disposed between the exhaust inlet and the exhaust outlet.

4. The integrated heat recovery and impurity removal method for liquids as claimed in claim 3, wherein at least two impurity removal walls are disposed between the exhaust gas inlet and the exhaust gas 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.

5. The integrated method for heat recovery and impurity removal of liquid according to claim 1, wherein the liquid conveying pipe is divided into a main conveying pipe and a branch conveying pipe, and the branch conveying pipes are arranged in the impurity removal wall so that the number of the branch conveying pipes is the same as that of the impurity removal wall;

two main conveying pipes are arranged, and the branch conveying pipes are connected between the two main conveying pipes.

6. The integrated method for heat recovery and impurity removal of liquid according to claim 5, wherein the impurity removal chamber is divided into an inner wall and an outer wall, two inner walls are provided and are respectively placed at both ends of the impurity removal wall;

the space between the inner wall and the outer wall constitutes the main duct.

Technical Field

The invention relates to an exhaust heat recovery method of a dryer, in particular to a liquid heat recovery and 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, 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, when the ambient temperature is lower than 10 ℃, the evaporation temperature of a heat pump refrigerating system is generally lower than 0 ℃, the frosting phenomenon can occur on an evaporator, the heat exchange and heating efficiency is reduced, the drying effect is not good, and therefore, 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.

However, the heat transfer temperature difference between the heat exchanger of the existing heat pump system and air is small, so that the heat exchange area and the heat exchange air volume are large; because the heat exchange area is large, the fin spacing of the heat pump heat exchanger is small, large-particle impurities are easy to block the heat exchanger, and the requirement on impurity removal is high; further, the larger the amount of air treated by the dust removing device, the more impurities are isolated, and the higher the price thereof is.

Disclosure of Invention

The invention aims to overcome the existing problems and provides a liquid heat recovery and impurity removal integrated method, which can recover the heat of exhaust gas through liquid while removing impurities, has larger heat transfer temperature difference and can reduce the heat exchange area; but also can lead the liquid to the evaporator of the heat pump to increase the evaporation temperature.

The purpose of the invention is realized by the following technical scheme:

a liquid heat recovery and impurity removal integrated method comprises the following steps:

introducing exhaust gas into an impurity removing chamber, wherein the exhaust gas is blown to an impurity removing wall formed by a liquid conveying pipe from an exhaust inlet of the impurity removing chamber; introducing liquid into a plurality of liquid conveying pipes, wherein the liquid moves to the front of an exhaust inlet along the liquid conveying pipes;

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 removing wall, and heat is transferred to the liquid conveying pipe from the exhaust gas and then is transferred to the liquid from the liquid conveying pipe; leading the liquid after obtaining heat to an evaporator of a dryer;

and the exhaust gas after impurity removal is discharged from an exhaust outlet of the impurity removal chamber.

In a preferred embodiment of the present invention, a trash wall is provided in the trash chamber, the trash wall being formed by vertically arranging a plurality of liquid supply pipes without gaps; erecting an impurity removal wall in front of an exhaust inlet of an impurity removal chamber;

liquid is introduced into the liquid conveying pipes, heat exchange is carried out before the liquid moves to the exhaust inlet, and the liquid after heat exchange is conveyed to the evaporator of the dryer through the liquid conveying pipes.

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.

Preferably, the liquid conveying pipe is divided into a main conveying pipe and branch conveying pipes, and the branch conveying pipes are arranged in the impurity removing wall, so that the number of the branch conveying pipes is the same as that of the impurity removing wall;

two main conveying pipes are arranged, and the branch conveying pipes are connected between the two main conveying pipes.

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;

the space between the inner wall and the outer wall forms a main conveying pipe; the impurity removing wall and the inner wall are made of heat conducting materials. Like this, encircle main conveyer pipe outside exhaust in the edulcoration room, including the branch conveyer pipe of setting in the edulcoration wall, be equivalent to whole liquid conveyer pipe 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.

Compared with the prior art, the invention has the following beneficial effects:

1. the liquid conveying pipe is set as the impurity removing wall, and in the impurity removing process, when exhaust gas is in contact with the impurity removing wall, heat is transferred to the liquid conveying pipe from the exhaust gas and then transferred to liquid (such as water) from the liquid conveying pipe, so that heat recovery is realized, and the device is particularly suitable for drying rice.

2. The liquid after obtaining the heat is led to an evaporator of the dryer, so that the evaporation temperature can be effectively increased.

3. The invention adopts liquid for heat exchange, has larger heat transfer temperature difference, can reduce the heat exchange area, can meet the situation of large exhaust amount by using a small amount of liquid, and is beneficial to reducing the volume of equipment.

Drawings

FIG. 1 is a flow chart of the liquid heat recovery and impurity removal integrated method of the present invention.

FIG. 2 is a sectional side view showing a structure of an integrated method of heat recovery and impurity removal of a liquid to which the present invention is applied.

FIG. 3 is a sectional plan view showing a structure of an integrated method of heat recovery and impurity removal of a liquid to which 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, a method for integrating heat recovery and impurity removal of liquid in the present embodiment includes the following steps:

introducing exhaust gas into an impurity removal chamber 1, wherein the exhaust gas is blown to an impurity removal wall 2 formed by a liquid conveying pipe 3 from an exhaust inlet 1-1 of the impurity removal chamber 1; a liquid, such as water, is passed into a plurality of liquid delivery tubes 3 and the liquid travels along the liquid delivery tubes 3 before the exhaust gas inlet 1-1.

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 removing wall 2, and heat is transferred to the liquid conveying pipe 3 from the exhaust gas and then is transferred to the liquid from the liquid conveying pipe 3; the liquid after heat extraction is passed to the evaporator 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. 2 to 3, a trash wall 2 is provided in a trash chamber 1, the trash wall 2 being formed by a plurality of liquid supply pipes 3 arranged vertically without gaps; erecting an impurity removal wall 2 in front of an exhaust inlet 1-1 of an impurity removal chamber 1; liquid is introduced into a plurality of liquid conveying pipes 3, heat exchange is carried out before the liquid moves to the exhaust inlet 1-1, and then the liquid after heat exchange is conveyed to the evaporator of the dryer through the liquid conveying pipes 3.

Referring to fig. 2 to 3, an exhaust inlet 1-1 and an exhaust outlet 1-2 of the trash chamber 1 are respectively provided on two opposite sidewalls, and a trash wall 2 is disposed between the exhaust inlet 1-1 and the exhaust outlet 1-2.

Further, at least two impurity removing walls 2 are arranged between the exhaust inlet 1-1 and the exhaust 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.

In particular, the module also comprises a water impurity removal element for absorbing the impurities of the exhaust gas by water, which is arranged between two adjacent impurity removal walls 2. In this way, the water stripping elements can filter out fine dust and particles that have not yet been deposited when the exhaust gas flows between two adjacent stripping walls 2.

Referring to fig. 2-3, the liquid delivery pipe 3 is divided into a main delivery pipe and a sub delivery pipe, and the sub delivery pipes are arranged in the impurity removing wall 2, so that the number of the sub delivery pipes is the same as that of the impurity removing wall 2; two main conveying pipes are arranged, and the branch conveying pipes are connected between the two main conveying pipes.

Further, the impurity removing chamber 1 is divided into an inner wall 4 and an outer wall 5, two inner walls 4 are arranged, and the two inner walls 4 are respectively arranged at two ends of the impurity removing wall 2; the space between the inner wall 4 and the outer wall 5 forms a main conveying pipe; the impurity removing wall 2 and the inner wall 4 are made of heat conducting materials, and can be made of metal materials such as iron and aluminum. Like this, encircle main conveying pipe outside exhaust in edulcoration room 1, including the branch conveyer pipe of setting in edulcoration wall 2, be equivalent to whole liquid conveyer pipe 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.

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.