CN118698276A - Energy-saving organic waste gas recovery device - Google Patents

Abstract

The present invention discloses an energy-saving organic waste gas recovery device, wherein the energy-saving organic waste gas recovery device includes an adsorption chamber, a condenser and a heat exchanger; the adsorption chamber has an adsorption space, and a gas inlet, a gas outlet, a steam inlet and a steam outlet connected to the adsorption space, and the organic waste gas enters and exits the adsorption space from the gas inlet and the gas outlet; the steam enters and exits the adsorption space from the steam inlet and the steam outlet, and an adsorption bed is arranged in the adsorption space, and the organic waste gas and water vapor flow through the adsorption bed in sequence; the condenser includes a condensation pipe and a water vapor pipe for mutual heat exchange, the water vapor pipe is connected to the steam outlet, and the condensation pipe is connected to an external water source; the heat exchanger includes an exhaust gas pipe and a heat exchange pipe for mutual heat exchange, the exhaust gas pipe is respectively connected to the source of the organic waste gas and the gas inlet, and the heat exchange pipe is respectively connected to the condensation pipe and the steam inlet. The technical solution of the present invention can utilize a heat recovery device to recycle and utilize the waste heat of the organic waste gas.

Description

Energy-saving organic waste gas recovery device

Technical Field

The invention relates to the technical field of organic waste gas recovery and treatment devices, and in particular to an energy-saving organic waste gas recovery device.

Background Art

The temperature of high-concentration organic waste gas is relatively high (about 200°C). In order to make the organic matter in the organic waste gas adhere better to the adsorption bed, the high-concentration organic waste gas will be cooled. Usually, a water bath is used for cooling. In the recovery process of organic matter in high-concentration organic waste gas, water needs to be continuously used for heat exchange. For example, high-temperature steam is used to heat the adsorption bed and take away the organic matter on the adsorption bed, and the water vapor mixed with organic matter is cooled by condensing water. This process uses a large amount of water resources and consumes a lot of energy to heat or cool the water so that the water temperature meets the process requirements, resulting in more energy consumption.

Summary of the invention

The main purpose of the present invention is to provide an energy-saving organic waste gas recovery device, which aims to recover and utilize the waste heat of the organic waste gas by using a heat recovery device.

To achieve the above-mentioned purpose, the energy-saving organic waste gas recovery device proposed by the present invention comprises:

An adsorption chamber, comprising an adsorption space, and a gas inlet, a gas outlet, a steam inlet and a steam outlet connected to the adsorption space, wherein the adsorption chamber comprises an adsorption bed arranged in the adsorption space, wherein the organic waste gas can enter the adsorption space from the gas inlet, flow through the adsorption bed, and then flow out of the adsorption space from the gas outlet; and the steam can enter the adsorption space from the steam inlet, flow through the adsorption bed, and then flow out of the adsorption space from the steam outlet;

A condenser, comprising a condensation pipe and a water vapor pipe for heat exchange with each other, the water vapor pipe having a first inlet and a first outlet connected to each other, the first inlet being connected to the steam outlet, the first outlet being used for external output, the condensation pipe comprising a second inlet and a second outlet connected to each other, the second inlet being connected to an external water source; and

A heat exchanger comprises an exhaust gas pipe and a heat exchange pipe for exchanging heat with each other, the exhaust gas pipe having an air inlet and an air outlet connected to each other, the air inlet being connected to a source of organic waste gas, the air outlet being connected to the gas inlet, the heat exchange pipe having a third inlet and a third outlet connected to each other, the third inlet being connected to the second outlet, and the third outlet being connected to the steam inlet.

Optionally, the heat exchange pipe is configured as a first box body, the third inlet and the third outlet are arranged on the box wall of the first box body, and the exhaust gas pipe is at least partially arranged in the first box body.

Optionally, the third inlet is arranged on a side wall of the first box body and close to a bottom wall of the first box body, and the third outlet is arranged on a top wall of the first box body.

Optionally, the exhaust gas pipe is located in the first box body, is arranged close to the bottom wall of the first box body, and is arranged in a spiral tube shape.

Optionally, the first box is used to be filled with water, and the portion of the exhaust pipe located in the first box can be covered by water.

Optionally, the energy-saving organic waste gas recovery device further includes a heating pipe and a heating element, wherein the heating pipe is connected between the third outlet and the steam inlet, and the heating element is used to heat the water vapor in the heating pipe to increase the temperature of the water vapor.

Optionally, the adsorption space includes a first channel and a second channel separated from each other, the first channel and the second channel are distributed in sequence along the circumference of the adsorption space, the gas inlet and the gas outlet are arranged at opposite ends of the first channel, and the steam inlet and the steam outlet are arranged at opposite ends of the second channel; the adsorption bed can rotate around the axis of the adsorption space, and has an adsorption zone located in the first channel and a desorption zone located in the second channel.

Optionally, the adsorption space also includes a third channel, the adsorption bed also has a cooling zone located in the third channel, the adsorption bin also has a heat dissipation inlet and a heat dissipation outlet connected to the third channel, and a heat dissipation fan is provided in the third channel, and the heat dissipation fan is used to drive air to flow from the heat dissipation inlet into the third channel and out of the heat dissipation outlet.

Optionally, the adsorption bed has a plurality of adsorption layers, and the plurality of adsorption layers are arranged at intervals along the axial direction of the adsorption space.

Optionally, the energy-saving organic waste gas recovery device further includes an oil-water separator, which is connected to the first outlet and is used to process the liquefied organic solution to separate the organic solute and the solvent in the organic solution.

The technical solution of the present invention introduces water from an external water source into the condensation pipe from the second inlet, and heats up the water through the condensation pipe and the steam in the water vapor pipe; then the heated water flows into the heat exchange pipe from the second outlet, and heats up the water through the heat exchange pipe and the organic waste gas in the waste gas pipe, and changes into steam; the steam flows into the steam inlet from the third outlet, and flows into the adsorption space to clean the adsorption bed; the steam flowing through the adsorption bed enters the water vapor pipe through the steam outlet to be liquefied (at the same time, the heat released by the steam realizes the heating of the water newly introduced from the external water source), and the organic matter in the organic waste gas is dissolved in the liquefied water to form an oil-water mixture (i.e., an organic solution). That is, after water is used as a medium to sequentially recover the heat of water vapor and organic waste gas, the water changes from liquid to gas, and the water vapor enters the adsorption chamber to clean the organic matter on the adsorption bed. After taking away the organic matter on the adsorption bed, the heat of the water vapor is absorbed by the newly introduced water in the condensation pipe, completing a flow of energy, so that the energy can be effectively recycled.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

FIG1 is a schematic structural diagram of an organic waste gas recovery device according to an embodiment of the present invention;

FIG2 is a schematic diagram of the structure of the heat exchanger in FIG1 ;

FIG. 3 is an exploded view of the adsorption chamber in FIG. 1 .

Description of Figure Numbers:

10. Adsorption chamber; 101. Adsorption bed; 101a. First adsorption zone; 101b. Second adsorption zone; 101c. Third adsorption zone; 101d. Second inner heat insulation layer; 101e. Second sealing strip; 102. Baffle; 103. Outer heat insulation layer; 104. First inner heat insulation layer; 11. Adsorption space; 111. First channel; 111a. Gas inlet; 111b. Gas outlet; 112. Second channel; 112a. Steam inlet; 112b. Steam outlet; 113. Third channel; 114. Reabsorption connecting pipe;

20. condenser; 21. water vapor pipeline; 211. first inlet; 212. first outlet; 22. condensation pipeline; 221. second inlet; 222. second outlet;

30. heat exchanger; 31. exhaust gas pipe; 311. air inlet; 312. air outlet; 32. heat exchange pipe; 321. third inlet; 322. third outlet; 323. first box; 33. heating pipe; 331. heating element;

40. Oil-water separator;

50. Source;

60. External water source.

The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and/or" appearing in the full text includes three parallel schemes. Taking "A and/or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

The invention provides an energy-saving organic waste gas recovery device.

In an embodiment of the present invention, the energy-saving organic waste gas recovery device is shown in Figures 1 to 3, and includes:

The adsorption chamber 10 has an adsorption space 11, and a gas inlet 111a, a gas outlet 111b, a steam inlet 112a and a steam outlet 112b connected to the adsorption space 11. The adsorption chamber 10 includes an adsorption bed 101 arranged in the adsorption space 11. The organic waste gas can enter the adsorption space 11 from the gas inlet 111a, flow through the adsorption bed 101, and then flow out of the adsorption space 11 from the gas outlet 111b; the steam can enter the adsorption space 11 from the steam inlet 112a, flow through the adsorption bed 101, and then flow out of the adsorption space 11 from the steam outlet 112b;

The condenser 20 includes a condensation pipe 22 and a water vapor pipe 21 for heat exchange with each other, the water vapor pipe 21 has a first inlet 211 and a first outlet 212 connected to each other, the first inlet 211 is connected to the steam outlet 112b, and the first outlet 212 is used for external output, the condensation pipe 22 includes a second inlet 221 and a second outlet 222 connected to each other, and the second inlet 221 is connected to the external water source 60; and

The heat exchanger 30 includes an exhaust gas pipe 31 and a heat exchange pipe 32 for exchanging heat with each other. The exhaust gas pipe 31 has an air inlet 311 and an air outlet 312 that are connected to each other. The air inlet 311 is connected to the source 50 of the organic waste gas, and the air outlet 312 is connected to the gas inlet 111a. The heat exchange pipe 32 has a third inlet 321 and a third outlet 322 that are connected to each other. The third inlet 321 is connected to the second outlet 222, and the third outlet 322 is connected to the steam inlet 112a.

The technical solution of the present invention introduces water from an external water source 60 into the condensation pipe 22 from the second inlet 221, and heats it through the condensation pipe 22 and the steam in the water vapor pipe 21; then the heated water flows into the heat exchange pipe 32 from the second outlet 222, and heats it through the heat exchange pipe 32 and the organic waste gas in the waste gas pipe 31 to be heated and phase-changed into steam; the steam then flows into the steam inlet 112a from the third outlet 322, and flows into the adsorption space 11 to clean the adsorption bed 101; the steam flowing through the adsorption bed 101 then enters the water vapor pipe 21 through the steam outlet 112b to be liquefied (at the same time, the heat released by the steam is used to heat the water newly introduced from the external water source 60), and the organic matter in the organic waste gas dissolves in the liquefied water to form an oil-water mixture (i.e., an organic solution). That is, after using water as a medium to recover the heat of water vapor and organic waste gas in turn, water changes from liquid to gas, and the water vapor enters the adsorption chamber 10 to clean the adsorption bed 101 and take away the organic matter on the adsorption bed 101. Then, the heat of the water vapor is absorbed by the newly introduced water in the condensation pipe 22, completing an energy flow, so that the energy can be effectively recycled.

Referring to FIG. 1 and FIG. 2 , optionally, the heat exchange pipe 32 is configured as a first box body 323, the third inlet 321 and the third outlet 322 are arranged on the box wall of the first box body 323, and the exhaust pipe 31 is at least partially arranged in the first box body 323. That is, the water directly contacts the exhaust pipe 31 in the first box body 323, and the heat of the organic waste gas in the exhaust pipe 31 directly heats the water. In other embodiments, the heat exchange pipe 32 and the exhaust pipe 31 can also be intertwined to complete the heat exchange between water and organic waste gas.

Optionally, the third inlet 321 is disposed on the side wall of the first box 323 and is disposed close to the bottom wall of the first box 323, and the third outlet 322 is disposed on the top wall of the first box 323. When water is vaporized in the first box 323, the water vapor floats upward, and disposing the third outlet 322 above the first box 323 facilitates the discharge of the water vapor. In other embodiments, the third outlet 322 may also be disposed on the side wall of the first box 323 and is disposed close to the top wall of the first box 323.

Optionally, the exhaust pipe 31 is located in the first box 323, and is arranged near the bottom wall of the first box 323, and is arranged in a spiral tube shape. The spiral tube shape helps to prolong the time for the organic waste gas to exchange heat with water in the first box 323, so that the heat exchange is more sufficient. The exhaust pipe 31 is arranged near the bottom wall of the first box 323, so that less water can cover the exhaust pipe 31, so that the water can be fully heated by the exhaust pipe 31. In other embodiments, the exhaust pipe 31 can also be arranged in a straight tube shape.

Optionally, the first box 323 is used to fill water, and the part of the exhaust pipe 31 located in the first box 323 can be covered by water. Since the maximum temperature of liquid water is 100°C and the temperature of the organic waste gas in the exhaust pipe 31 is about 200°C, the heat exchange medium wrapped around the exhaust pipe 31 is always below 100°C for heat exchange with the organic waste gas. That is, water vapor above 100°C in the first box 323 is stored in the upper part of the first box 323 and is located above the liquid surface. Water below 100°C is introduced from the third inlet 321 and stored in the middle and lower part of the first box 323 and heated by the exhaust pipe 31. When it is necessary to provide water vapor to the adsorption bin 10, the water vapor leaves from the third outlet 322 (for example, the opening and closing of the third outlet 322 can be controlled by a valve provided at the third outlet 322). In other embodiments, the first box 323 can also be filled with water.

Further optionally, the water vapor pipe 21 or the condensation pipe 22 in the condenser 20 can be a second box, and the structure of the second box is the same as that of the first box 323. When the water vapor pipe 21 is the second box, the first inlet 211 is located at the top of the second box, and the first outlet 212 is arranged near the bottom of the second box. When the condensation pipe 22 is the second box, the second box is filled with water, the second inlet 221 is arranged near the bottom of the second box, and the second outlet 222 is arranged at the top of the second box. In other embodiments, the water vapor pipe 21 and the condensation pipe 22 can also be arranged to be intertwined with each other.

Optionally, the energy-saving organic waste gas recovery device further includes a heating pipe 33 and a heating element 331, the heating pipe 33 is connected between the third outlet 322 and the steam inlet 112a, and the heating element 331 is used to heat the water vapor in the heating pipe 33 to further increase the temperature of the water vapor, so that the water vapor entering the adsorption chamber 10 has a higher temperature so that it can still remain in a gaseous state after heating the adsorption bed 101. Specifically, the heating element 331 can be a heating rod extending into the heating pipe 33. In other embodiments, the heating pipe 33 and the heating element 331 may not be provided.

Please refer to FIG. 1 and FIG. 3 , optionally, the adsorption space 11 includes a first channel 111 and a second channel 112 separated from each other, the first channel 111 and the second channel 112 are sequentially distributed along the circumference of the adsorption space 11, the gas inlet 111a and the gas outlet 111b are respectively arranged at opposite ends of the first channel 111, and the steam inlet 112a and the steam outlet 112b are respectively arranged at opposite ends of the second channel 112; the adsorption bed 101 can rotate around the axis of the adsorption space 11, and has an adsorption area located in the first channel 111 and a desorption area located in the second channel 112. That is, the adsorption bed 101 can rotate in the adsorption space 11, so that part of the structure on the adsorption bed 101 can change position in the first channel 111 and the second channel 112. The organic waste gas contacts the adsorption bed 101 in the first channel 111, so that the part of the adsorption bed 101 in the first channel 111 adsorbs organic matter in the organic waste gas. Then the adsorption bed 101 rotates, so that the part of the structure that adsorbs the organic matter rotates to the second channel 112, so that the water vapor in the second channel 112 heats the adsorption bed 101, so that the adsorbent on the adsorption bed 101 is at a temperature with a lower adsorption rate, and takes away the organic matter adsorbed by the adsorbent.

Referring to FIG. 3 , further optionally, the adsorption bed 101 has a first adsorption zone 101a (i.e., adsorption zone) and a second adsorption zone 101b (i.e., desorption zone) distributed along its circumferential direction, and the first adsorption zone 101a and the second adsorption zone 101b can rotate between the first channel 111 and the second channel 112, so that when one of the first adsorption zone 101a and the second adsorption zone 101b adsorbs organic matter in the organic waste gas in the first channel 111, the other one contacts with water vapor in the second channel 112. In this way, the overall efficiency of the adsorption bed 101 can be improved, that is, the efficiency of the two processes of adsorption and water vapor cleaning can be improved.

Of course, in other embodiments, the adsorption space 11 may not include the first channel 111 and the second channel 112 , that is, there is only one channel, and the organic waste gas and water vapor pass through it in sequence.

Please refer to FIG. 3. Optionally, the adsorption space 11 further includes a third channel 113, the adsorption bed 101 further includes a cooling zone located in the third channel 113, the adsorption chamber 10 further includes a heat dissipation inlet and a heat dissipation outlet connected to the third channel 113, and a heat dissipation fan (not shown in the drawings) is provided in the third channel 113. The heat dissipation fan is used to drive air to flow from the heat dissipation inlet into the third channel 113 and out of the heat dissipation outlet. The third channel 113 is used to cool the adsorption bed 101 heated by water vapor, so that the adsorbent on the adsorption bed 101 can be cooled to a temperature with a good adsorption rate, so that the adsorption bed 101 can be used normally when it is transferred back to the first channel 111. Of course, in other embodiments, the third channel 113 may not be provided, and after the adsorption bed 101 is transferred from the second channel 112 to the first channel 111, the organic waste gas is introduced after it is allowed to stand in the first channel 111 for a period of time.

Specifically, referring to Figure 3, the adsorption bed 101 also has a third adsorption zone 101c (i.e., a cooling zone). The first adsorption zone 101a, the second adsorption zone 101b, and the third adsorption zone 101c are sequentially distributed along the circumferential direction of the adsorption bed 101, and can correspond one-to-one to the first channel 111, the second channel 112, and the third channel 113.

It can be understood that when the organic waste gas recovery device is operated for the first time, the first adsorption area 101a, the second adsorption area 101b and the third adsorption area 101c are all clean and have not adsorbed organic matter. Assuming that the first adsorption area 101a is aligned with the first channel 111, the second adsorption area 101b is aligned with the second channel 112, and the third adsorption area 101c is aligned with the third channel 113, only the first channel 111 can be enabled, so that the first adsorption area 101a starts to process the waste gas flowing into the adsorption bin 10, and the second channel 112 and the third channel 113 are not enabled, that is, the water vapor and the cooling fan can be disabled.

After the adsorbent on the first adsorption area 101a has worked for a certain period of time, the adsorption bed 101 can be driven to rotate by a motor or other driving parts, so that the first adsorption area 101a rotates to a position aligned with the second channel 112, and can be cleaned with the help of the water vapor in the second channel 112. At this time, the second adsorption area 101b is aligned with the third channel 113, but does not need to be cooled, so the cooling fan can be disabled; the third adsorption area 101c is aligned with the first channel 111, and continues to adsorb the exhaust gas in the first channel 111.

After the adsorbent on the third adsorption zone 101c has worked for a certain period of time, the motor can be used to drive the adsorption bed 101 to rotate again, so that the first adsorption zone 101a rotates to a position aligned with the third channel 113, and can be cooled by the cooling fan in the third channel 113. At this time, the second adsorption zone 101b is aligned with the first channel 111, and continues to adsorb the exhaust gas in the first channel 111; the third adsorption zone 101c is aligned with the second channel 112, and can be cleaned by the water vapor in the second channel 112.

By analogy, during the long-term operation of the organic waste gas recovery device, the first adsorption zone 101a, the second adsorption zone 101b and the third adsorption zone 101c basically operate synchronously and rotate between the first channel 111, the second channel 112 and the third channel 113 in turn.

Further optionally, the adsorption bin 10 has a plurality of baffles 102 , and the peripheral sides of the baffles 102 are sealed and fixed to the inner wall of the adsorption bin 10 by means of sealant bonding or the like, so as to divide the adsorption bin 10 into a first channel 111 , a second channel 112 and a third channel 113 .

Optionally, an outer insulation layer 103 is provided on the outer peripheral surface of the adsorption bin 10, and a first inner insulation layer 104 is provided inside the baffle 102 to avoid heat exchange between the fluids (such as water vapor, air, etc.) in the first channel 111, the second channel 112 and the third channel 113, and to prevent the heat of the fluid in the adsorption bin 10 from dissipating to the outside of the adsorption bin 10.

Optionally, the adsorption bed 101 is provided with a second inner heat insulation layer 101d at the partitions of the first adsorption zone 101a, the second adsorption zone 101b and the third adsorption zone 101c, that is, the second inner heat insulation layer 101d is arranged opposite to the first inner heat insulation layer 104. In this way, the second inner heat insulation layer 101d and the first inner heat insulation layer 104 work together to prevent the fluids (such as water vapor, air, etc.) in the first channel 111, the second channel 112 and the third channel 113 from exchanging heat with each other.

Specifically, optionally, the material of the outer heat insulation layer 103, the first inner heat insulation layer 104 and the second inner heat insulation layer 101d can be configured as a material with good heat insulation performance such as foam.

Optionally, the baffle 102 has an escape notch corresponding to the adsorption bed 101 to avoid the rotating adsorption bed 101, and a first sealing strip (not shown in the drawings) is provided at the edge of the escape notch, and the first sealing strip can slide against the adsorption bed 101. When the adsorption bed 101 stops rotating, the first sealing strip and the baffle 102 work together to isolate the gases in the first channel 111, the second channel 112, and the third channel 113 from interfering with each other. That is, the inner wall surface of the adsorption bin 10 extends continuously in the axial direction, but the baffle is discontinuous in the axial direction and is disconnected at the location of the adsorption bed 101.

Optionally, a second sealing strip 101e is provided on the outer peripheral surface of the adsorption bed 101, and the second sealing strip 101e is slidably abutted against the inner wall surface of the adsorption chamber 10 to achieve sealing between the adsorption bed 101 and the inner wall surface of the adsorption chamber 10, thereby avoiding the problem of mutual interference between the gases in the first channel 111, the second channel 112 and the third channel 113.

Optionally, there are multiple adsorption beds 101, and the multiple adsorption beds 101 are arranged at intervals along the axial direction of the adsorption space 11. Since the natural flow direction of the gas is usually from bottom to top, the adsorption chamber 10 extends in the height direction, and the gas inlet 111a is close to the bottom end of the adsorption chamber 10, and the gas outlet 111b is close to the top end of the adsorption chamber 10. In order to enable the adsorption chamber 10 to provide an effective adsorption effect on the organic waste gas, the adsorption bed 101 is arranged in multiple layers in the height direction of the adsorption chamber 10, so that the organic waste gas is sequentially adsorbed by multiple adsorption beds 101 in the process of flowing through the primary adsorption chamber 10, that is, a large amount of organic matter can be sucked away when the organic waste gas flows through the primary adsorption chamber 10. In other embodiments, only one layer of adsorption bed 101 can be provided.

Further optionally, the adsorption chamber further includes a reabsorption connecting pipe 114, a driving fan and a valve arranged on the reabsorption connecting pipe 114, the air inlet end of the reabsorption connecting pipe 114 is connected to the gas outlet 111b, and the air outlet end of the reabsorption connecting pipe 114 is connected to the gas inlet 111a. Specifically, after the organic waste gas flows out from the first channel 111, the organic matter content will be detected. If the concentration of organic matter is still high, the valve and the driving fan on the reabsorption connecting pipe 114 will be opened, so that the organic waste gas that has undergone one adsorption will pass through the gas inlet 111a again through the reabsorption connecting pipe 114 and enter the adsorption space 11, and the adsorption bed 101 will adsorb the organic matter in the organic waste gas again until the organic matter concentration in the organic waste gas is detected to be lower than the preset standard value, and then the organic waste gas will be discharged to the outside.

In the process of the organic waste gas being recirculated from the gas outlet 111b to the gas inlet 111a, the organic waste gas does not pass through the heat exchanger 30 for heat exchange with water. That is, only the organic waste gas directly discharged from the source 50 of the organic waste gas will enter the heat exchanger 30 for heat exchange.

Optionally, the energy-saving organic waste gas recovery device further includes an oil-water separator 40, which is connected to the first outlet 212 and is used to process the liquefied organic solution to separate the organic solute and the solvent in the organic solution. A large amount of organic matter is dissolved in the liquid flowing out of the first outlet 212 of the water vapor pipe 21, and the oil-water separator 40 can separate the organic solute from the water phase to recover most of the organic matter in the liquid flowing out of the first outlet 212. In other embodiments, the oil-water separator 40 may not be provided.

The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly/indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.

Claims (10)

1. An energy-efficient organic waste gas recovery device, comprising:

The adsorption bin is provided with an adsorption space, a gas inlet, a gas outlet, a vapor inlet and a vapor outlet, wherein the gas inlet, the gas outlet, the vapor inlet and the vapor outlet are communicated with the adsorption space, the adsorption bin comprises an adsorption bed arranged in the adsorption space, and organic waste gas can enter the adsorption space from the gas inlet, flow through the adsorption bed and then flow out of the adsorption space from the gas outlet; vapor is able to enter the adsorption space from the vapor inlet, flow through the adsorbent bed, and then flow out of the adsorption space from the vapor outlet;

the condenser comprises a condensation pipeline and a water vapor pipeline which are mutually heat-exchanged, wherein the water vapor pipeline is provided with a first inlet and a first outlet which are communicated, the first inlet is communicated with the steam outlet, the first outlet is used for outputting outwards, the condensation pipeline comprises a second inlet and a second outlet which are communicated, and the second inlet is communicated with an external water source; and

The heat exchanger comprises an exhaust gas pipeline and a heat exchange pipeline, wherein the exhaust gas pipeline is provided with an air inlet and an air outlet which are communicated with each other, the air inlet is communicated with a source of organic exhaust gas, the air outlet is communicated with the gas inlet, the heat exchange pipeline is provided with a third inlet and a third outlet which are communicated with each other, the third inlet is communicated with the second outlet, and the third outlet is communicated with the steam inlet.

2. The energy efficient organic waste gas recovery device according to claim 1, wherein the heat exchange conduit is configured as a first tank, the third inlet and the third outlet are provided in a wall of the first tank, and the waste gas conduit is at least partially provided in the first tank.

3. The energy efficient organic waste gas recovery device according to claim 2, wherein the third inlet is provided at a side wall of the first housing and is provided near a bottom wall of the first housing, and the third outlet is provided at a top wall of the first housing.

4. The energy-saving organic waste gas recovery device according to claim 3, wherein the waste gas pipe is disposed in a spiral tubular shape near the bottom wall of the first tank.

5. The energy efficient organic waste gas recovery device according to claim 3, wherein the first tank is filled with water, and a portion of the waste gas pipe located in the first tank is covered with water.

6. The energy efficient organic waste gas recovery device according to claim 5, further comprising a heating pipe connected between the third outlet and the steam inlet, and a heating member for heating the steam in the heating pipe to raise the temperature of the steam.

7. The energy-saving organic waste gas recovery device according to claim 1, wherein the adsorption space comprises a first channel and a second channel which are separated from each other, the first channel and the second channel are sequentially distributed along the circumferential direction of the adsorption space, the gas inlet and the gas outlet are respectively arranged at opposite ends of the first channel, and the vapor inlet and the vapor outlet are respectively arranged at opposite ends of the second channel; the adsorbent bed is rotatable about an axis of the adsorption space and has an adsorption zone in the first passage and a desorption zone in the second passage.

8. The energy efficient organic waste gas recovery device according to claim 7, wherein the adsorption space further comprises a third channel, the adsorption bed further comprises a cooling area located in the third channel, the adsorption bin further comprises a heat dissipation inlet and a heat dissipation outlet communicated with the third channel, and a heat dissipation fan is arranged in the third channel and used for driving air to flow into the third channel from the heat dissipation inlet and flow out of the heat dissipation outlet.

9. The energy efficient organic waste gas recovery apparatus according to claim 7, wherein the adsorption bed has a plurality of adsorption layers, and the plurality of adsorption layers are arranged at intervals along an axial direction of the adsorption space.

10. The energy efficient organic waste gas recovery device according to claim 1, further comprising an oil-water separator in communication with the first outlet and configured to treat the liquefied organic solution to separate organic solutes and solvents in the organic solution.