CN218270336U

CN218270336U - VOCs low temperature waste heat recovery utilizes system of airing exhaust

Info

Publication number: CN218270336U
Application number: CN202222169150.8U
Authority: CN
Inventors: 李占军; 赵化阳; 王浩
Original assignee: Baoding Shengli Energy Saving And Environmental Protection Technology Co ltd
Current assignee: Baoding Shengli Energy Saving And Environmental Protection Technology Co ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2023-01-10
Anticipated expiration: 2032-08-17

Abstract

The utility model relates to a VOCs low temperature waste heat recovery system of airing exhaust, air exhaust chamber and VOCs trunk line of airing exhaust including VOCs, heat pipe heat transfer device includes VOCs air exhaust branch pipe, the evaporating chamber, the condensation chamber, new trend fan and new trend pipeline, VOCs air exhaust chamber discharge contains VOCs's high temperature wind gets into VOCs trunk line of airing exhaust, high temperature wind airs through VOCs air exhaust branch pipe entering evaporating chamber, new trend fan drive new trend gets into heat pipe heat exchanger's condensation chamber simultaneously, heat pipe heat exchanger passes through heat pipe medium heat transfer for the low temperature new trend of condensation chamber of heat pipe heat exchanger's heat of high temperature wind in the evaporating chamber, the low temperature new trend is heated up, new trend after the intensification gets into the new plenum of air conditioner and supplies the air conditioner to use, the air conditioner heats the place that needs to heat more easily like this, the power consumption of air conditioner has been reduced, the heat of airing exhaust has utilized current VOCs to air exhaust and has reduced the temperature of airing exhaust again, air conditioner natural gas or electric energy consumption has still been improved, energy-saving green, and cost reduction accords with the development demand.

Description

VOCs low temperature waste heat recovery who airs exhaust utilizes system

Technical Field

The utility model relates to a VOCs discharges energy saving field, concretely relates to VOCs low temperature waste heat recovery utilizes system of airing exhaust.

Background

VOCs refers to volatile organic compounds, along with the environmental protection to using the more strict of the relevant emission standard requirement of VOCs content product, discharge the exhaust system that VOCs does not conform to emission standard, all need to administer discharge after up to standard, need consume a large amount of energy when VOCs administers, administer discharge back up to standard at VOCs, although the discharge temperature of waste gas reaches the regulation requirement, but about 40 ℃ still, and outdoor new trend temperature is on average at 0 ℃ (there is some difference according to the condition in each place) in winter north, it has not had the recovery value to think about 40 ℃ waste gas temperature universally, this part higher temperature that contains VOCs airs often is by VOCs exhaust chamber through VOCs main pipe direct atmospheric air into of airing exhaust, it is useless.

On the other hand, in the occasions needing air-conditioning heating, the environmental air-conditioning (industrially used for purifying or ventilating air-conditioning) needs to burn natural gas (or electrically heat) to heat fresh air at a conventional temperature, the energy consumption of the environmental air-conditioning is large (because the fresh air is sent out at a high temperature by burning natural gas or electrically heating from a low temperature; the natural gas or electricity consumption of the environmental air-conditioning is very large), and if the fresh air of the environmental air-conditioning can be preheated by exhausting air at a high temperature in favor of the VOCs, the consumption of a large amount of heating heat of the fresh air can be saved.

SUMMERY OF THE UTILITY MODEL

There is above-mentioned defect to prior art, the utility model aims to solve the technical problem that how recycle about 40 ℃ that VOCs airs exhaust air the exhaust gas temperature provide the new trend that preheats for the air conditioner, concrete technical scheme as follows:

the utility model provides a VOCs low temperature waste heat recovery system of airing exhaust, airs exhaust the trunk line including VOCs air-out room and VOCs, VOCs air-out room discharge contains VOCs's high temperature wind gets into VOCs air-out trunk line, VOCs airs exhaust and installs a set of heat pipe heat transfer device on the trunk line at least, heat pipe heat transfer device includes that VOCs airs exhaust the branch pipeline, evaporating chamber, condensation chamber, new trend fan and new trend pipeline, VOCs airs exhaust the branch pipeline and airs exhaust trunk line parallel connection with VOCs, install heat pipe exchanger in evaporating chamber and the condensation chamber, VOCs airs the branch pipeline connection evaporating chamber, new trend fan is installed to the condensation chamber side, new trend fan drive new trend gets into the condensation chamber, heat pipe exchanger transmits the condensation chamber and heaies up the temperature to the low temperature new trend through the medium in the heat pipe of high temperature wind in the evaporating chamber, the new trend gets into the new air chamber of air conditioner through new trend pipeline.

As an optimal scheme of the utility model, install the blast gate among VOCs trunk line of airing exhaust, VOCs branch pipeline, the new trend pipeline of airing exhaust.

As an optimal scheme of the utility model, heat pipe exchanger includes tube, upper end cover, lower extreme cover, imbibition core and threading core, and the upper end cover is installed to the tube upper end and the lower extreme installs the lower extreme cover, and the imbibition core is installed to the inside center department of tube, installs the wool core between imbibition core and the tube inner wall, and the inside medium that is equipped with of tube.

As a preferred scheme of the utility model, for the condensation segment in heat pipe exchanger upper segment stretches into the condensation chamber, for the evaporation zone in the heat pipe exchanger lower extreme stretches into the evaporation chamber, adopt the baffle to separate mutually between evaporation chamber and the condensation chamber, heat pipe exchanger passes the baffle.

As a preferred scheme of the utility model, fins are installed outside the tube shell at the evaporation section and the condensation section.

As a preferred scheme of the utility model, the material used by the wool core is stainless steel or aluminum material or copper material.

As an optimal scheme of the utility model, heat transfer device has 2 groups.

The utility model has the advantages that: VOCs air exhaust chamber discharges high-temperature air containing VOCs and enters VOCs air exhaust main pipeline, VOCs air exhaust main pipeline guides high-temperature air to enter VOCs air exhaust branch pipeline, the high-temperature air enters evaporation chamber through VOCs air exhaust branch pipeline, meanwhile, fresh air fan drives fresh air to enter condensation chamber of heat pipe exchanger, heat pipe exchanger conducts medium heat exchange in heat pipe of heat pipe exchanger on the high-temperature air in evaporation chamber to give low-temperature fresh air to condensation chamber, the low-temperature fresh air is heated and warmed, the warmed fresh air enters air conditioner fresh air chamber to be used by air conditioner, thus the air conditioner warms up and heats places needing heating more easily, energy consumption of the air conditioner is reduced, the existing VOCs air exhaust heat is utilized, air exhaust temperature is reduced, fresh air temperature is increased, natural gas or electric energy consumption of the air conditioner is saved, energy conservation, green and environmental protection are achieved, and cost reduction meets development requirements.

Drawings

FIG. 1 is a schematic diagram of the structure of the present invention;

FIG. 2 is a schematic view of the structure of the present invention during air exhaust;

FIG. 3 is a structural diagram of the heat pipe exchanger of the present invention;

fig. 4 is a structural diagram of the heat pipe heat exchanger of the present invention during heat exchange operation.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:

in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.

As shown in figure 1, F2, F3, F4, F5 and F6 in the figure represent air valves, XF-1 and XF-2 are fresh air fans, a VOCs air exhaust low-temperature waste heat recycling system comprises a VOCs air exhaust chamber 1 and a VOCs air exhaust main pipeline 2, the VOCs air exhaust chamber 1 exhausts high-temperature air containing VOCs and enters a VOCs air exhaust main pipeline 2, at least one group of heat pipe heat exchange devices are installed on the VOCs air exhaust main pipeline, preferably 2 groups of heat pipe heat exchange devices are arranged, each heat pipe heat exchange device comprises a VOCs air exhaust branch pipeline 3, an evaporation chamber 4, a condensation chamber 5, a fresh air fan 6 and a fresh air pipeline 7, the VOCs air exhaust branch pipeline 3 is connected with the VOCs air exhaust main pipeline 2 in parallel, the evaporation chamber and the condensation chamber are provided with heat pipe heat exchangers 9, the VOCs air exhaust branch pipeline 3 is connected with the evaporation chamber 4, the condensation chamber 5 is provided with the fresh air fan 6, the fresh air fan 6 drives fresh air to enter the condensation chamber 5, the evaporation chamber 4 conducts heat exchange on the high-temperature air in the VOCs air exhaust branch pipeline 3 through a heat pipe medium and a low-temperature air-conditioning air pipe 8.

The working principle of the VOCs exhaust waste heat recycling system is shown in FIG. 2, and it is assumed that the exhaust volume of the VOCs exhaust chamber 1 is 160000m ³ H, VOCs exhaust chamber 1 discharges 34 ℃ high temperature wind to enter VOCs exhaust main pipeline 2, 34 ℃ high temperature wind enters VOCs exhaust branch pipeline 3, and the assumed fresh air volume is 200000 m ³ The temperature is 0 ℃, the heat exchanger 4 exchanges heat between the high-temperature air with the temperature of 34 ℃ and the fresh air with the temperature of 0 ℃ in the waste heat recovery device 5, and the fresh air is heated to about 16 ℃ and enters the fresh air chamber 8 of the air conditioner for use.

Specifically, air valves are installed in the main air exhaust pipeline 2 for the VOCs, the branch air exhaust pipeline 3 for the VOCs and the fresh air pipeline 7 for adjusting the air volume of the branch pipes.

Specifically, heat pipe exchanger 10 includes tube 11, upper end cap 12, lower end cap 13, imbibition core 14 and capillary core 15, tube 11 upper end installation upper end cap 12 and lower extreme installation lower end cap 13, the imbibition core 14 is installed to the inside center department of tube 11, install capillary core 15 between imbibition core 14 and the 11 inner walls of tube, the material that the capillary core used is stainless steel or aluminum product or copper material and is capillary porous structure, the inside medium that is equipped with of tube, heat pipe exchanger 10 upper segment stretches into in condensation chamber 5 for the condensation segment, the heat pipe exchanger lower extreme stretches into in evaporation chamber 4 for the evaporation segment, evaporation chamber 4 and condensation chamber 5 adopt baffle 9 to separate mutually, the heat pipe passes baffle 9, heat pipe exchanger 10 theory of operation: high-temperature VOCs exhaust air and enter the evaporation section of the heat pipe heat exchanger in the contact of the evaporation chamber 4, the lower end of the heat pipe heat exchanger is heated, liquid media are heated, evaporated and vaporized into gaseous media, steam flows to the condensation section through the liquid absorption core 14 under a small pressure difference, low-temperature fresh air passes through the condensation section, the steam heats the fresh air in the condensation section and the steam releases heat to condense into the liquid media, the liquid media flow back to the evaporation section under the action of the capillary core 15 of the porous structure, the circulation is not repeated, the heat is transmitted to the other end from one end of the heat pipe heat exchanger, the heat exchange is realized, meanwhile, fins 16 are installed on the outer sides of the pipe shells of the evaporation section and the condensation section, and the heat exchange surface area is increased.

Application example: a certain automobile manufacturing company

A plant VOCs adsorption exhaust system is modified, a VOCs exhaust branch pipeline 3, a heat exchanger 4, a waste heat recovery device 5, a fresh air fan 6 and a fresh air pipeline 7 are added on an original VOCs exhaust main pipeline 2, preheated fresh air is used for preheating fresh air of an air conditioner of a coating workshop, the running time of 2021-2022 in winter is 1263 hours, 41 ten thousand standard cubic meters of natural gas is saved through metering, and the energy-saving benefit is good.

The utility model discloses VOCs exhaust waste heat recovery utilizes system's advantage lies in:

(1) The VOCs exhaust air and the fresh air exchange heat only through the heat pipe heat exchanger, and the VOCs exhaust air and the fresh air are not communicated with each other through physical isolation, so that the fresh air is not polluted;

(2) The heat exchange device has wide applicable temperature range and can be used in the environment of-40 ℃ to 80 ℃;

(3) The pressure loss is less than 700Pa, and the heat exchange efficiency can reach more than 60%;

(4) The original air conditioning system does not need to be reformed, and the best matching can be realized only by simply reforming the VOCs exhaust system.

The above description is provided for the purpose of describing the present invention in more detail with reference to the preferred embodiments, and it should not be construed that the present invention is limited to these descriptions, and it will be apparent to those skilled in the art that the present invention can be implemented in many ways without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a VOCs low temperature waste heat recovery utilizes system of airing exhaust, includes VOCs room and VOCs trunk line of airing exhaust, VOCs room discharge of airing exhaust contains VOCs's high temperature wind gets into VOCs trunk line of airing exhaust, its characterized in that: the VOCs air exhaust main pipeline is at least provided with a group of heat pipe heat exchange devices, each heat pipe heat exchange device comprises a VOCs air exhaust branch pipeline, an evaporation chamber, a condensation chamber, a fresh air fan and a fresh air pipeline, the VOCs air exhaust branch pipeline is connected with the VOCs air exhaust main pipeline in parallel, a heat pipe exchanger is installed in the evaporation chamber and the condensation chamber, the VOCs air exhaust branch pipeline is connected with the evaporation chamber, the fresh air fan is installed on the side of the condensation chamber, the fresh air fan drives fresh air to enter the condensation chamber, the heat of high-temperature air in the evaporation chamber is transmitted to the condensation chamber through media in heat pipes by the heat pipe exchanger and is heated up for low-temperature fresh air, and the fresh air enters the fresh air chamber of the air conditioner through the fresh air pipeline.

2. The VOCs exhaust low-temperature waste heat recycling system according to claim 1, characterized in that: and air valves are arranged in the VOCs air exhaust main pipeline, the VOCs air exhaust branch pipeline and the fresh air pipeline.

3. The VOCs exhaust low-temperature waste heat recycling system according to claim 1, characterized in that: the heat pipe heat exchanger comprises a pipe shell, an upper end cover, a lower end cover, a liquid absorption core and a threading core, wherein the upper end cover is installed at the upper end of the pipe shell, the lower end cover is installed at the lower end of the pipe shell, the liquid absorption core is installed at the center inside the pipe shell, the threading core is installed between the liquid absorption core and the inner wall of the pipe shell, and a medium is installed inside the pipe shell.

4. The VOCs exhaust low-temperature waste heat recycling system according to claim 3, characterized in that: the upper section of the heat pipe heat exchanger extends into the condensation chamber to form a condensation section, the lower end of the heat pipe heat exchanger extends into the evaporation chamber to form an evaporation section, the evaporation chamber and the condensation chamber are separated by a partition plate, and the heat pipe heat exchanger penetrates through the partition plate.

5. The VOCs exhaust air low-temperature waste heat recycling system of claim 4, which is characterized in that: fins are arranged on the outer sides of the pipe shells at the evaporation section and the condensation section.

6. The VOCs exhaust low-temperature waste heat recycling system according to claim 3, characterized in that: the material used by the wool core is stainless steel, aluminum material or copper material.

7. The VOCs exhaust air low-temperature waste heat recycling system of claim 1, which is characterized in that: the heat exchange device has 2 groups.