Flue gas waste heat recycling device
By setting up a filter mechanism and a tube furnace in the flue gas waste heat recovery and reuse device, the filtration and secondary heating of the flue gas are achieved, the problems of insufficient evaporation and high chimney temperature are solved, and the production efficiency and equipment service life are improved. At the same time, it reduces air pollution.
Patent Information
- Application Number
- CN202420883177.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-27
- Estimated Expiration
- 2034-04-26
AI Technical Summary
When used, the existing flue gas waste heat recovery and reuse device is insufficient due to the reduction of liquid volume, resulting in a decrease in production volume. The high chimney temperature of the tube furnace will shorten the service cycle, and it is not convenient to smoke during the transportation process. Filtration of gas can easily cause air pollution.
A device including a distillation tower, a filtering mechanism and a tube furnace is designed. The flue gas is filtered by setting up a filtering mechanism, and the tube furnace is used for secondary heating, increasing the heat in the distillation tower, and the bottom oil is extracted through the exhaust fan. Recirculate and heat the flue gas in the distillate column to increase the evaporation and heat to meet production needs.
Through this device, the evaporation volume is increased, the production cycle is extended, the gas consumption is reduced, the chimney temperature is avoided, the use cycle is extended, and the moisture and harmful gases in the flue gas are effectively filtered, and air pollution is reduced.
Smart Images
Figure CN222256664U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of flue gas waste heat recovery, in particular to a flue gas waste heat recovery and reuse device. Background Art
[0002] Flue gas waste heat recovery and reuse is a device used to recover and reuse the heat energy in the exhaust gas generated during the combustion process. It is usually installed upstream of boilers, industrial furnaces or other heating equipment to improve energy utilization and reduce environmental impact. This device can use different technical means to collect waste heat in flue gas, including heat exchangers, air preheaters, waste heat boilers, etc. Among them, the heat exchanger is the most common device, which realizes waste heat recovery by exchanging heat between high-temperature flue gas and low-temperature fluid (such as water or gas). The air preheater increases the temperature of the mixed gas entering the combustion chamber by adding a certain amount of auxiliary fuel (such as natural gas or fuel oil) to the intake air, thereby reducing fuel consumption and exhaust gas emissions. Flue gas waste heat recovery and reuse devices can significantly reduce energy consumption, improve energy utilization efficiency, and effectively reduce environmental pollution and greenhouse gas emissions.
[0003] When the existing flue gas waste heat recovery and reuse device is in use, the evaporation amount is insufficient due to the reduction of liquid volume, resulting in unqualified products, thereby reducing production volume. After improvement, the processing time is extended. Compared with the previous production period, the amount of gas used in the tubular furnace is increased, and the high temperature of the tubular furnace chimney burns the paint surface. Long-term high temperature will shorten the service life of the chimney. In addition, it is not convenient to filter the flue gas during the transportation process, which is easy to cause air pollution. Utility Model Content
[0004] The purpose of the utility model is to provide a flue gas waste heat recovery and reuse device to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flue gas waste heat recovery and reuse device, comprising a distillation tower, and also comprising: a filtering mechanism arranged on one side of the distillation tower, the filtering mechanism comprising a fixing member arranged on one side of the distillation tower, a heat dissipation member being arranged on one side of the fixing member, and a filtering member being arranged on one side of the heat dissipation member; a tubular furnace arranged on one side of the distillation tower, and an exhaust fan being connected to one side of the distillation tower.
[0006] Preferably, the fixing member comprises a filter box, communication ports are provided on both sides of the filter box, and the number of the filter boxes is set to two.
[0007] Preferably, the heat sink comprises a heat dissipation fan, a protective cover is provided on one side of the heat dissipation fan, and the protective cover is fixedly connected to one side of the filter box.
[0008] Preferably, the filter element comprises a mounting plate, the first filter screen and the second filter screen are slidably connected inside the mounting plate, and the mounting plate is plugged into the interior of the filter box.
[0009] Preferably, the first filter is made of zeolite, and the second filter is made of activated carbon.
[0010] Preferably, one side of the exhaust fan is connected to a conversion pipe, one side of the conversion pipe is connected to a first valve, one side of the first valve is connected to a shunt pipe, and the shunt pipe is connected to one side of the filter box.
[0011] Preferably, one side of the distillation tower is connected to a heat conduction pipe, a second valve is provided on the outer side of the heat conduction pipe, and the heat conduction pipe is connected to one side of the tubular furnace.
[0012] Preferably, one side of the distillation tower is connected with a connecting pipe, a third valve is arranged on the outer side of the connecting pipe, a supporting frame is arranged at the bottom of the connecting pipe, and the supporting frame is fixed to the top of the base.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0014] The utility model provides a distillation tower to increase the heat to meet the needs of daily production, and provides a filtering mechanism to facilitate filtering of the flue gas waste heat in the distillation tower when it is transported to the tubular furnace for heating. The tubular furnace is provided and steam is passed through the tubular furnace to increase the heat source for the distillation tower, and the tower is heated twice so that the evaporation amount reaches the separation standard. An exhaust fan is provided and the bottom oil of the distillation tower is pumped out by a pump and returned to the bottom of the distillation tower after being heated through the tubular furnace, thereby increasing the heat in the distillation tower. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 A schematic structural diagram of a preferred embodiment of the flue gas waste heat recovery and reuse device provided by the utility model;
[0016] Figure 2 A schematic diagram of the structure of the fixing member and the heat dissipation member provided by the utility model;
[0017] Figure 3 A schematic diagram of the filter structure provided by the utility model;
[0018] Figure 4 This is a schematic diagram of the support frame structure provided by the utility model.
[0019] In the figure: 1. distillation tower; 2. filtering mechanism; 21. fixing part; 211. filter box; 212. connecting port; 22. heat dissipation part; 221. cooling fan; 222. protective cover; 23. filter element; 231. mounting plate; 232. first filter screen; 233. second filter screen; 3. tubular furnace; 4. base; 5. exhaust fan; 6. conversion tube; 7. first valve; 8. shunt tube; 9. heat transfer tube; 10. second valve; 11. connecting tube; 12. third valve; 13. support frame. DETAILED DESCRIPTION
[0020] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.
[0021] See also Figure 1-4 As shown, a flue gas waste heat recovery and reuse device includes a fractionation tower 1, and also includes: a filtering mechanism 2 arranged on one side of the fractionation tower 1, the filtering mechanism 2 includes a fixing member 21 arranged on one side of the fractionation tower 1, a heat sink 22 is arranged on one side of the fixing member 21, and a filtering member 23 is arranged on one side of the heat sink 22; a tubular furnace 3 arranged on one side of the fractionation tower 1, and an exhaust fan 5 is connected to one side of the fractionation tower 1. The heat is increased by setting the fractionation tower 1 to meet the needs of daily production, and the filtering mechanism 2 is arranged to facilitate The waste heat of the flue gas in the distillation tower 1 is filtered when it is transported to the tubular furnace 3 for heating. By setting the tubular furnace 3, the heat source of the distillation tower 1 is increased by passing steam through the tubular furnace 3, and the tower is heated twice, so that the evaporation amount reaches the separation standard, so as to solve the problem of insufficient supply of raw material tar during industrial production. Research is conducted on industrial production equipment to reduce production and extend processing time, so that the equipment can operate normally. By setting the exhaust fan 5, the flue gas at the bottom of the distillation tower 1 is extracted and heated by the tubular furnace 3 and returned to the distillation tower 1, thereby increasing the heat in the distillation tower 1.
[0022] See also Figure 2-3As shown, the fixing member 21 includes a filter box 211, and connecting ports 212 are provided on both sides of the filter box 211, and the number of the filter boxes 211 is set to two; the heat dissipation member 22 includes a heat dissipation fan 221, and a protective cover 222 is provided on one side of the heat dissipation fan 221, and the protective cover 222 is fixedly connected to one side of the filter box 211; the filter member 23 includes a mounting plate 231, and the inside of the mounting plate 231 is respectively slidably connected with a first filter screen 232 and a second filter screen 233, and the mounting plate 231 is plugged into the inside of the filter box 211, and the material of the first filter screen 232 is zeolite, and the material of the second filter screen 233 is activated carbon. It should be noted that: the fixing member 21 is used to connect the shunt pipe 8, and the heat dissipation member 22 is used for the filtering mechanism 2 for heat dissipation to prevent the internal device from being overheated and affecting normal operation. The filter element 23 is convenient for filtering the flue gas transported from the fractionation tower 1 to the tubular furnace 3. The first filter screen 232 made of zeolite and the second filter screen 233 made of activated carbon are plugged into the inside of the mounting plate 231, and then the mounting plate 231 is plugged into the inside of the filter box 211. The flue gas enters the filter box 211 through the connecting port 212, and the moisture is filtered out through the inside of the first filter screen 232, and then the odor, harmful gases and volatile organic compounds therein are filtered out through the second filter screen 233. The heat generated during the operation of the filter mechanism 2 can be reduced by the heat dissipation fan 221, and the heat dissipation fan 221 is protected by the protective cover 222.
[0023] See also Figure 4 As shown, one side of the exhaust fan 5 is connected to a conversion pipe 6, one side of the conversion pipe 6 is connected to a first valve 7, one side of the first valve 7 is connected to a shunt pipe 8, and the shunt pipe 8 is connected to one side of the filter box 211; one side of the distillation tower 1 is connected to a heat transfer pipe 9, the outer side of the heat transfer pipe 9 is provided with a second valve 10, and the heat transfer pipe 9 is connected to one side of the tubular furnace 3; one side of the distillation tower 1 is connected to a connecting pipe 11, the outer side of the connecting pipe 11 is provided with a third valve 12, and the bottom of the connecting pipe 11 is provided with a support frame 13, and the support frame 13 is fixed to the top of the base 4. It should be noted that: the bottom oil of the distillation tower 1 is extracted by the exhaust fan 5 and transported to the first valve 7 through the conversion pipe 6, the first valve 7 is rotated to transport it to the shunt pipe 8, the heat transfer pipe 9 transports the hot steam to the second valve 10, and the hot steam is transported back to the distillation tower 1 through the second valve 10, and part of the gas in the distillation tower 1 will pass through the connecting pipe 11 and the third valve 12 and be transported to the tubular furnace 3 for treatment again.
[0024] Working principle: When in use, the first filter screen 232 made of zeolite and the second filter screen 233 made of activated carbon are inserted into the inside of the mounting plate 231, and then the mounting plate 231 is inserted into the inside of the filter box 211. The bottom oil of the distillation tower 1 is extracted by the exhaust fan 5 and transported to the first valve 7 through the conversion pipe 6. The first valve 7 is turned to transport it to the connecting port 212 through the shunt pipe 8, and enters the filter box 211 through the connecting port 212. The moisture is filtered out by the inside of the first filter screen 232, and then the second filter screen 233 is used to filter out the moisture. The net 233 filters out odors, harmful gases and volatile organic compounds, reduces the heat generated by the filter mechanism 2 during operation through the heat dissipation fan 221, and protects the heat dissipation fan 221 with the protective cover 222. After filtration, the gas is transported to the tubular furnace 3 for secondary heating, and then the hot steam is transported to the second valve 10 through the heat conduction pipe 9, and the hot steam is transported back to the distillation tower 1 through the second valve 10. Part of the gas in the distillation tower 1 is transported to the tubular furnace 3 for treatment again through the connecting pipe 11 and the third valve 12.
[0025] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A flue gas waste heat recovery and reuse device, comprising a fractionation tower (1), characterized in that: Also includes: A filtering mechanism (2) disposed on one side of the distillation tower (1), the filtering mechanism (2) comprising a fixing member (21) disposed on one side of the distillation tower (1), a heat dissipation member (22) disposed on one side of the fixing member (21), and a filtering member (23) disposed on one side of the heat dissipation member (22); A tubular furnace (3) is arranged on one side of the distillation tower (1), and one side of the distillation tower (1) is connected to an exhaust fan (5).
2. The flue gas waste heat recovery and reuse device according to claim 1, characterized in that: The fixing member (21) comprises a filter box (211), communication ports (212) are provided on both sides of the filter box (211), and the number of the filter boxes (211) is set to two.
3. The flue gas waste heat recovery and reuse device according to claim 1, characterized in that: The heat sink (22) comprises a heat dissipation fan (221), one side of the heat dissipation fan (221) is provided with a protective cover (222), and the protective cover (222) is fixedly connected to one side of the filter box (211).
4. The flue gas waste heat recovery and reuse device according to claim 1, characterized in that: The filter element (23) comprises a mounting plate (231), the inside of which is slidably connected a first filter screen (232) and a second filter screen (233), and the mounting plate (231) is plugged into the interior of the filter box (211).
5. The flue gas waste heat recovery and reuse device according to claim 4, characterized in that: The material of the first filter screen (232) is zeolite, and the material of the second filter screen (233) is activated carbon.
6. The flue gas waste heat recovery and reuse device according to claim 1, characterized in that: One side of the exhaust fan (5) is connected to a conversion pipe (6), one side of the conversion pipe (6) is connected to a first valve (7), one side of the first valve (7) is connected to a shunt pipe (8), and the shunt pipe (8) is connected to one side of the filter box (211).
7. The flue gas waste heat recovery and reuse device according to claim 1, characterized in that: One side of the distillation tower (1) is connected to a heat conduction pipe (9), a second valve (10) is arranged on the outside of the heat conduction pipe (9), and the heat conduction pipe (9) is connected to one side of the tubular furnace (3).
8. The flue gas waste heat recovery and reuse device according to claim 1, characterized in that: One side of the distillation tower (1) is connected to a connecting pipe (11), a third valve (12) is arranged on the outside of the connecting pipe (11), a supporting frame (13) is arranged at the bottom of the connecting pipe (11), and the supporting frame (13) is fixed to the top of the base (4).