Steel ship burner tail gas treatment system

Abstract

The utility model discloses a steel ship burner tail gas treatment system, and belongs to the technical field of ship tail gas treatment. A steel ship burner tail gas treatment system comprises a tail gas treatment unit; the output end of the tail gas treatment unit is communicated with the supergravity absorption machine, and a rich liquid tank is fixedly arranged at one end of the supergravity absorption machine; the output end of the pregnant solution tank is communicated with the supergravity desorption machine through a heater, one end of the supergravity desorption machine is fixedly provided with a barren solution tank, the barren solution tank is communicated with a supergravity absorption machine through a cooler, and the supergravity desorption machine is fixedly provided with a carbon dioxide liquefaction unit; by adopting the route design of combining absorption of the supergravity absorption machine and desorption regeneration of the supergravity desorption machine, carbon dioxide in tail gas can be effectively separated more efficiently and thoroughly.

Description

Technical Field

[0001] The utility model relates to the technical field of ship exhaust gas treatment, in particular to a steel ship burner exhaust gas treatment system. Background Art

[0002] In recent years, human activities have emitted a large amount of greenhouse gases into the environment, causing the pace of global warming to accelerate. The increase in greenhouse gas concentrations has led to a rise in temperatures around the world. Scientific observations have found that the concentration of carbon dioxide in the earth's atmosphere has risen from 280ppm before the industrial revolution to the current 387ppm. Climate warming is fraught with dangers, leading to a series of human survival crises. Therefore, global warming has become one of the most serious environmental problems facing mankind, attracting widespread attention from the international community. For a long time, the shipping industry has been environmentally friendly, but in recent years, with the increase in the number of ships and the development of large-scale ships, the maritime transport industry has emitted a large amount of greenhouse gases such as carbon dioxide into the atmosphere.

[0003] As fossil fuels are used as the main energy source, a large amount of pollutants such as carbon dioxide will be produced during the combustion process. Carbon dioxide is the main greenhouse gas. The large amount of carbon dioxide emissions leads to global warming and the melting of polar glaciers. With the development of the shipping industry, the carbon dioxide emissions from ships account for a large part of the total global emissions. Ship energy conservation and emission reduction has become a hot topic in the international community.

[0004] With the development of ship decarbonization technology, especially the rapid progress of ultra-gravity centrifuge carbon dioxide absorption technology, the effect of ship exhaust treatment has been greatly improved. However, in the existing technology, the decarbonization process is relatively complex and cumbersome, inconvenient to use, and the decarbonization effect is not ideal. Utility Model Content

[0005] The utility model aims to solve the problems of complicated decarburization process and unsatisfactory decarburization effect in the prior art, and proposes a steel ship burner tail gas treatment system.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A steel ship burner exhaust gas treatment system comprises: an exhaust gas treatment unit; at least one group of supergravity absorbers, wherein the output end of the exhaust gas treatment unit is connected to the supergravity absorber, and a rich liquid tank is fixedly provided at one end of the supergravity absorber; at least one group of supergravity analyzers, wherein the output end of the rich liquid tank is connected to the supergravity analyzer through a heater, and a lean liquid tank is fixedly provided at one end of the supergravity analyzer, and the lean liquid tank is connected to the supergravity absorber through a cooler, and a carbon dioxide liquefaction unit is fixedly provided on the supergravity analyzer.

[0008] In order to reduce solid particles such as smoke and dust in the exhaust gas, preferably, the exhaust gas treatment unit includes a dust collector, wherein a first fan for extracting ship exhaust gas is fixedly provided at one end of the dust collector, and a smoke filter is fixedly provided at the other end of the dust collector, and the smoke filter is connected to the supergravity absorption machine.

[0009] In order to facilitate cooling of the dust collector, the device further includes a first cooling tower, which is connected to the dust collector through a first circulating pump.

[0010] In order to facilitate the collection of carbon dioxide, preferably, the carbon dioxide liquefaction unit includes a collection cabinet, a condenser is fixedly provided at the other end of the ultragravity analyzer, the collection cabinet is connected to the condenser through a second fan, and the lean liquid tank is connected to the condenser through a recovery pump.

[0011] Furthermore, the cooler includes a first heat exchanger and a second heat exchanger, one end of the first heat exchanger is connected to the second heat exchanger, the second heat exchanger is connected to the supergravity absorption machine, and the first heat exchanger is connected to the lean liquid tank through a lean liquid pump.

[0012] Preferably, a demister is fixedly provided on the supergravity absorption machine, an exhaust pipe is fixedly provided on one end of the demister, and the other end of the demister is connected to the rich liquid tank.

[0013] Compared with the prior art, the utility model provides a steel ship burner exhaust gas treatment system, which has the following beneficial effects:

[0014] 1. The steel ship burner exhaust gas treatment system adopts a route design that combines the absorption of the supergravity absorber and the analysis and regeneration of the supergravity analyzer, which can effectively separate the carbon dioxide in the exhaust gas more efficiently and thoroughly. The overall process is environmentally friendly and the process is simple, which is especially suitable for use in space-constrained occasions such as ships;

[0015] 2. The steel ship burner exhaust treatment system can store carbon dioxide through a collection cabinet and leave it for use elsewhere, achieving rational use of resources and reducing carbon dioxide greenhouse gas emissions, with significant economic and social benefits.

[0016] The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology. The utility model adopts a route design that combines absorption by an ultra-gravity absorber and analysis and regeneration by an ultra-gravity analyzer, so as to effectively separate carbon dioxide from exhaust gas more efficiently and thoroughly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of a steel ship burner exhaust gas treatment system proposed by the utility model;

[0018] Figure 2 A schematic diagram of an exhaust gas treatment unit of a steel ship burner exhaust gas treatment system proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of a carbon dioxide liquefaction unit of a steel ship burner exhaust gas treatment system proposed by the utility model;

[0020] Figure 4 The utility model is a structural block diagram of a steel ship burner exhaust gas treatment system.

[0021] In the figure: 1. dust collector; 101. first fan; 102. flue gas filter; 103. first circulation pump; 104. first cooling tower; 2. supergravity absorber; 3. rich liquid tank; 301. rich liquid pump; 302. heater; 4. supergravity analyzer; 5. lean liquid tank; 501. lean liquid pump; 502. first heat exchanger; 503. second heat exchanger; 6. collection cabinet; 601. second fan; 602. condenser; 7. demister. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] Example:

[0025] Reference Figure 1-Figure 4A steel ship burner exhaust gas treatment system comprises: an exhaust gas treatment unit; at least one group of supergravity absorbers 2, the supergravity absorbers 2 are provided with one to six groups, preferably three groups, the three groups are connected in parallel, the output ends of the exhaust gas treatment units are respectively connected with the supergravity absorbers 2, and then a rich liquid tank 3 is fixedly provided at one end of the supergravity absorber 2, the three groups of supergravity absorbers 2 are all connected with the rich liquid tank 3, the chemical absorbent formula and material ratio can be experimented under supergravity conditions, and the experiment is carried out according to the relevant parameters of the supergravity machine: the mass transfer height and shape of the filler, the porosity of the filler, the degree of coordination between the specific surface area and the speed of the supergravity machine, etc.; the structural parameters of the supergravity absorption and regeneration equipment, the dimensionless relationship, guide the design, mainly through numerical simulation and experimental verification. At least one group of ultra-gravity analyzers 4 is provided, and there are one to six groups of ultra-gravity analyzers 4, preferably three groups. The three groups of ultra-gravity analyzers 4 are also connected in parallel. Small-scale tests are carried out according to relevant parameters of the ultra-gravity analyzers 4: temperature, vacuum degree, magnitude of gravity G, etc., and empirical formulas containing correction parameters are sorted out. In addition, the reliquefaction plan is preset and the steps are decomposed according to the state of the analyzed gas, and small-scale tests are carried out. The intermediate process between the absorber and the analyzer can be improved to optimize the energy efficiency of the entire process. Among them, the output end of the rich liquid tank 3 is connected to the three groups of supergravity analyzers 4 through the heater 302. Here, we have a rich liquid pump 301 fixedly installed at the output end of the rich liquid tank 3, and the end of the rich liquid pump 301 away from the rich liquid tank 3 is connected to the heater 302. A lean liquid tank 5 is fixedly installed at one end of the supergravity analyzer 4. One end of the three groups of supergravity analyzers 4 are all connected to the lean liquid tank 5. The lean liquid tank 5 is connected to the three groups of supergravity absorption machines 2 through coolers, and a carbon dioxide liquefaction unit is fixedly installed on the supergravity analyzer 4.

[0026] Reference Figure 2 Here, the exhaust gas treatment unit includes a dust collector 1, wherein a first fan 101 for extracting ship exhaust gas is fixedly provided at one end of the dust collector 1, and a pipe with a valve is fixedly provided at the output end of the first fan 101, which is connected to the outside air, and a smoke filter 102 is fixedly provided at the other end of the dust collector 1, and the smoke filter 102 is connected to the supergravity absorber 2, so as to process smoke and dust in the exhaust gas.

[0027] Reference Figure 2 A steel ship burner exhaust gas treatment system also includes a first cooling tower 104. The first cooling tower 104 is connected to the dust collector 1 through a first circulating pump 103, which can increase cooling water for the dust collector 1, thereby helping to improve the dust reduction effect. The exhaust gas first enters the first fan 101 through a pipeline through a process valve, then enters the dust collector 1, and then enters the flue gas filter 102 through a pipeline. After the treatment is completed, the exhaust gas enters the supergravity absorber 2 respectively.

[0028] Reference Figure 3 Here, we design the carbon dioxide liquefaction unit as a collection cabinet 6 for collecting and storing carbon dioxide. A condenser 602 is fixedly arranged at the other end of the ultra-gravity analyzer 4. The condenser 602 exchanges heat through the second cooling tower. That is to say, the heat source for heat exchange in the condenser 602 enters the second cooling tower for cooling, and then the second circulation pump can transport the cold source in the second cooling tower to the condenser 602 to achieve circulation cooling and improve the use effect. The collection cabinet 6 is connected to the condenser 602 through the second fan 601, and the lean liquid tank 5 is connected to the condenser 602 through the recovery pump. By setting the collection cabinet 6, the liquefied carbon dioxide can be stored.

[0029] Reference Figure 1 Here, we design the cooler as a first heat exchanger 502 and a second heat exchanger 503. The first heat exchanger 502 exchanges heat through the third cooling tower, and the second heat exchanger 503 exchanges heat through the chiller. One end of the first heat exchanger 502 is connected to the second heat exchanger 503, that is, the output end of the first heat exchanger 502 is connected to the input end of the second heat exchanger 503, the output end of the second heat exchanger 503 is connected to the supergravity absorption machine 2, and the input end of the first heat exchanger 502 is connected to the lean liquid tank 5 through the lean liquid pump 501.

[0030] Reference Figure 1 A demister 7 is fixedly provided on the super gravity absorber 2 , and an exhaust pipe is fixedly provided at one end of the demister 7 , so that the clean gas processed by the super gravity absorber 2 can be discharged, and the other end of the demister 7 is connected to the rich liquid tank 3 .

[0031] In the utility model, the exhaust gas of the burner first enters the exhaust gas pretreatment unit through a pipeline, and then enters the carbon dioxide absorption unit, that is, the super gravity absorber 2, after the solid impurities such as black carbon and oil are removed. After the exhaust gas and the carbon dioxide absorbent are fully transferred in the high-speed rotating forced gas washer, the clean gas with a low carbon dioxide concentration enters the demister 7 through a pipeline, and a part of the carbon dioxide is absorbed by the absorbent carried in the demister 7 and then directly discharged into the atmosphere, and the absorbed carbon dioxide will enter the rich liquid tank 3; then the super gravity analyzer 4 starts to operate, and the rich liquid (containing the absorbent with a high carbon dioxide concentration) is pumped into the rich liquid tank 3. 01 is transported to the heater 302 for heating, and after reaching the ideal temperature, it enters the supergravity analyzer 4 for high-speed rotation forced analysis, which can accelerate the precipitation of carbon dioxide. After the analysis is completed, the lean liquid enters the lean liquid tank 5, and the lean liquid enters the cooler after being pressurized by the lean liquid pump 501, and then enters the supergravity absorber 2 for further treatment; at this time, the carbon dioxide precipitated from the supergravity analyzer 4 is sucked by the second fan 601 and enters the condenser 602. After being fully condensed to remove the entrained absorbent liquid particles, it enters the collection cabinet 6, and the removed absorbent liquid can enter the lean liquid tank 5 for the next treatment.

[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A steel ship burner exhaust gas treatment system, characterized in that: include: Exhaust gas treatment unit; At least one set of supergravity absorbers (2), the output end of the tail gas treatment unit is connected to the supergravity absorber (2), and a rich liquid tank (3) is fixedly provided at one end of the supergravity absorber (2); at least one set of supergravity analyzers (4), The output end of the rich liquid tank (3) is connected to the supergravity analyzer (4) via a heater (302), a lean liquid tank (5) is fixedly arranged at one end of the supergravity analyzer (4), the lean liquid tank (5) is connected to the supergravity absorber (2) via a cooler, and a carbon dioxide liquefaction unit is fixedly arranged on the supergravity analyzer (4).

2. A steel ship burner exhaust gas treatment system according to claim 1, characterized in that: The tail gas treatment unit comprises a dust collector (1), A first fan (101) for extracting ship exhaust gas is fixedly arranged at one end of the dust collector (1), and a smoke filter (102) is fixedly arranged at the other end of the dust collector (1), and the smoke filter (102) is connected to the supergravity absorber (2).

3. A steel ship burner exhaust gas treatment system according to claim 2, characterized in that: It also includes a first cooling tower (104), which is connected to the dust collector (1) via a first circulating pump (103).

4. A steel ship burner exhaust gas treatment system according to claim 1, characterized in that: The carbon dioxide liquefaction unit comprises a collection cabinet (6), a condenser (602) is fixedly arranged at the other end of the ultra-gravity analyzer (4), the collection cabinet (6) is connected to the condenser (602) via a second fan (601), and the lean liquid tank (5) is connected to the condenser (602) via a recovery pump.

5. A steel ship burner exhaust gas treatment system according to claim 4, characterized in that: The cooler comprises a first heat exchanger (502) and a second heat exchanger (503); one end of the first heat exchanger (502) is connected to the second heat exchanger (503); the second heat exchanger (503) is connected to the supergravity absorption machine (2); and the first heat exchanger (502) is connected to the lean liquid tank (5) via a lean liquid pump (501).

6. A steel ship burner exhaust gas treatment system according to claim 1, characterized in that: A demister (7) is fixedly arranged on the supergravity absorption machine (2), an exhaust pipe is fixedly arranged on one end of the demister (7), and the other end of the demister (7) is connected to the rich liquid tank (3).

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