CN220214441U

CN220214441U - VOCs waste gas treatment operation system and ship coating factory building

Info

Publication number: CN220214441U
Application number: CN202321586677.9U
Authority: CN
Inventors: 王�琦; 陆俊杰; 李宁; 唐辉; 蔡文君; 郝大军; 马磊; 孙明轲; 陈伟平
Original assignee: Shanghai Waigaoqiao Shipbuilding Co Ltd
Current assignee: Shanghai Waigaoqiao Shipbuilding Co Ltd
Priority date: 2023-06-20
Filing date: 2023-06-20
Publication date: 2023-12-22
Anticipated expiration: 2033-06-20

Abstract

The utility model relates to the technical field of ship coating waste gas treatment, in particular to a VOCs waste gas treatment operation system and a ship coating factory building. VOCs exhaust treatment operating system includes: the waste gas treatment components are in one-to-one correspondence with the coating workshops and comprise a prefilter, a zeolite rotating wheel and an RTO furnace which are sequentially communicated; the communication assembly comprises a first communication pipe for communicating the zeolite rotating wheels and a second communication pipe for communicating the RTO furnaces; the desorption heat exchanger has heat Cheng Tonglu in communication with a plurality of RTO furnaces and Leng Chengtong in communication with a plurality of zeolite wheels. According to the utility model, a plurality of groups of waste gas treatment components are integrated into a set of system capable of treating waste gas of a plurality of coating workshops, so that zeolite rotating wheels and RTO furnaces with different numbers are switched according to working conditions, and the running cost is reduced; the desorption heat exchanger is arranged to apply the heat energy generated by the RTO furnace to the concentration and desorption of the zeolite rotating wheel, so that part of external energy is saved, and the energy consumption is saved.

Description

VOCs waste gas treatment operation system and ship coating factory building

Technical Field

The utility model relates to the technical field of ship coating waste gas treatment, in particular to a VOCs waste gas treatment operation system and a ship coating factory building.

Background

In the ship manufacturing process, the paint spraying can discharge volatile organic compounds, and can cause environmental pollution. The volatile organic compounds produced in a typical paint shop are mainly produced by the volatilization of paint and curing agents. According to the regulation, the atmospheric pollutants must reach the emission standard, so that the organic waste gas generated in the coating operation should be discharged to the VOCs waste gas treatment device for treatment.

The concentrated catalytic combustion method is a mainstream technology for VOCs treatment, and mainly adopts a dry pre-filtration process, a zeolite rotating wheel adsorption concentration process and a regenerative incinerator combustion process, wherein organic waste gas discharged after paint is sprayed in a coating workshop is subjected to dry pre-filtration and enters a zeolite rotating wheel for adsorption and concentration, and the organic waste gas can reach the discharge standard after zeolite adsorption treatment. At the same time, the high concentrated organic waste gas attached to the zeolite is desorbed on line by the heated air, and the desorbed concentrated organic waste gas enters the rear-end regenerative incinerator for combustion treatment. The treatment process can effectively carry out innocent treatment on the discharged VOCs, but the concentration, desorption and combustion links in the mode can be realized by a large amount of external energy.

At present, all VOCs waste gas treatment devices of the coating plant are basically in a 24-hour full-open running state, so that a large amount of electric energy and natural gas are consumed, and the running cost is very high. In addition, a set of VOCs waste gas treatment device is configured between every two coating plants in the current shipbuilding industry, and each VOCs waste gas treatment device independently operates, so that the operation cost of the VOCs waste gas treatment operation system is further improved.

Disclosure of Invention

Accordingly, an object of the present application is to provide a VOCs exhaust gas treatment operation system and a ship coating factory building, so as to solve the problem of high operation cost of the existing VOCs exhaust gas treatment operation system.

The first aspect of the present utility model provides a VOCs exhaust gas treatment operating system for treating exhaust gas generated in a ship coating process, wherein the VOCs exhaust gas treatment operating system comprises:

the waste gas treatment assemblies are provided with a plurality of groups, and the waste gas treatment assemblies are arranged in one-to-one correspondence with the coating workshops; each group of the waste gas treatment components comprises a prefilter, a zeolite rotating wheel and an RTO furnace which are sequentially communicated along the flowing direction of the waste gas;

the communication assembly is used for communicating the plurality of groups of waste gas treatment assemblies; the communication assembly comprises a first communication pipe for communicating a plurality of zeolite rotating wheels and a second communication pipe for communicating a plurality of RTO furnaces;

the desorption heat exchanger is arranged between the zeolite rotating wheel and the RTO furnace along the flowing direction of the waste gas; the desorption heat exchanger has a heat path capable of heat exchange and a Leng Cheng path, the heat Cheng Tonglu being in communication with a plurality of the RTO furnaces, the Leng Cheng path being in communication with a plurality of the zeolite wheels.

Preferably, the zeolite runner is provided with an exhaust gas inlet, a thermal desorption air outlet and a combustion conveying port;

the waste gas inlet is communicated with the prefilter, the thermal desorption air inlet and the thermal desorption air outlet are respectively communicated with the two ends of the Leng Chengtong path, and the waste gas entering the Leng Cheng path from the zeolite rotating wheel is conveyed back to the zeolite rotating wheel after being heated; the combustion conveying port is communicated with the RTO furnace.

Preferably, each of the exhaust treatment assemblies further includes, in the exhaust gas flow direction:

the adsorption fan is arranged between the prefilter and the zeolite rotating wheel;

the desorption fan is arranged between the zeolite rotating wheel and the desorption heat exchanger;

and the RTO fan is arranged between the zeolite rotating wheel and the RTO furnace.

Preferably, the first communication pipe is arranged between the adsorption fan and the zeolite rotating wheels, so that each pre-filtering device is communicated with a plurality of zeolite rotating wheels;

the second communicating tube is disposed between the RTO blower and the RTO furnace such that each zeolite wheel communicates with a plurality of RTO furnaces.

Preferably, the VOCs exhaust treatment operating system further comprises a detection assembly connected to the communication assembly, the detection assembly comprising a concentration detection member and a pressure detection member.

Preferably, each group of exhaust gas treatment components is further provided with a valve group for controlling gas path on-off, and the valve group comprises:

the adsorption valve is arranged between the prefilter and the zeolite rotating wheel;

the desorption valve is arranged between the zeolite rotating wheel and the desorption heat exchanger;

an RTO valve disposed between the zeolite wheel and the RTO furnace;

and the heat taking valve is arranged between the desorption heat exchanger and the RTO furnace.

Preferably, the VOCs exhaust gas treatment operating system further comprises:

and a heat energy recovery unit respectively communicated with the RTO furnace and the heat Cheng Tonglu.

Preferably, a bypass valve is further arranged between the heat energy recovery unit and the RTO furnace.

Preferably, the zeolite wheels in each set of the exhaust-gas treatment modules are connected in parallel such that each of the pre-filtration devices is connected to the zeolite wheels in each set of the exhaust-gas treatment modules, respectively; the desorption heat exchanger is connected with each zeolite rotating wheel in series; the RTO furnaces in each set of the exhaust treatment assemblies are connected in parallel such that each of the zeolite wheels is connected with the RTO furnaces in each set of the exhaust treatment assemblies, respectively.

The second aspect of the utility model provides a ship coating plant, comprising the VOCs waste gas treatment operation system according to any one of the above technical schemes, wherein the ship coating plant comprises a plurality of coating plants.

Compared with the prior art, the utility model has the beneficial effects that:

according to the VOCs waste gas treatment operation system, pipelines and control systems of a plurality of independent waste gas treatment assemblies are optimized, so that a system for treating organic waste gas of a plurality of coating workshops is integrated, and different numbers of zeolite rotating wheels and RTO furnaces are switched according to actual working conditions to treat waste gas, so that the requirements of coating operation are met; the heat energy generated by the RTO furnace is applied to the concentration and desorption of the zeolite rotating wheel through the desorption heat exchanger, so that partial external energy is saved, the condition that the VOCs waste gas treatment device is fully opened for 24 hours is changed, the consumption of electric energy and natural gas is greatly reduced, and the running cost of the VOCs waste gas treatment system is reduced. In addition, the ship coating workshop with a plurality of coating workshops only needs one set of VOCs waste gas treatment operation system to meet the requirements of coating operation, and the ship spraying cost is reduced.

In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a VOCs exhaust treatment operating system provided by an embodiment of the present utility model.

Icon: 100-an exhaust treatment assembly; 10-a prefilter device; 20-zeolite wheel; 21-an exhaust gas inlet; 22-thermal desorption air outlet; 23-thermal desorption gas inlet; 24-combustion delivery port; a 30-RTO furnace; 41-a first communication pipe; 42-a second communicating tube; 50-a desorption heat exchanger; 51-hot-path air inlet; 52-a hot-path air outlet; 53-Leng Cheng air inlets; 54-Leng Cheng air outlets; 61-an adsorption blower; 62-a desorption fan; 63-RTO fan; 71-a concentration detection member; 72-a pressure detecting member; 81-adsorption valve; 82-a desorption valve; 83-RTO valve; 84-a heat taking valve; an 85-bypass valve; 90-heat recovery unit.

Detailed Description

The following detailed description is provided to assist the reader in obtaining a thorough understanding of the methods, apparatus, and/or systems described herein. However, various changes, modifications, and equivalents of the methods, apparatuses, and/or systems described herein will be apparent after an understanding of the present disclosure. For example, the order of operations described herein is merely an example, and is not limited to the order set forth herein, but rather, obvious variations may be made upon an understanding of the present disclosure, other than operations that must occur in a specific order. In addition, descriptions of features known in the art may be omitted for the sake of clarity and conciseness.

The features described herein may be embodied in different forms and should not be construed as limited to the examples described herein. Rather, the examples described herein have been provided solely to illustrate some of the many possible ways of implementing the methods, devices, and/or systems described herein that will be apparent after a review of the disclosure of the present application.

In the entire specification, when an element (such as a layer, region or substrate) is described as being "on", "connected to", "bonded to", "over" or "covering" another element, it may be directly "on", "connected to", "bonded to", "over" or "covering" another element or there may be one or more other elements interposed therebetween. In contrast, when an element is referred to as being "directly on," directly connected to, "or" directly coupled to, "another element, directly on," or "directly covering" the other element, there may be no other element intervening therebetween.

As used herein, the term "and/or" includes any one of the listed items of interest and any combination of any two or more.

Although terms such as "first," "second," and "third" may be used herein to describe various elements, components, regions, layers or sections, these elements, components, regions, layers or sections should not be limited by these terms. Rather, these terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first member, component, region, layer or section discussed in examples described herein could also be termed a second member, component, region, layer or section without departing from the teachings of the examples.

For ease of description, spatially relative terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "upper" relative to another element would then be oriented "below" or "lower" relative to the other element. Thus, the term "above … …" includes both orientations "above … …" and "below … …" depending on the spatial orientation of the device. The device may also be otherwise positioned (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. Singular forms also are intended to include plural forms unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" are intended to specify the presence of stated features, integers, operations, elements, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, operations, elements, and/or groups thereof.

Variations from the shapes of the illustrations as a result, of manufacturing techniques and/or tolerances, are to be expected. Accordingly, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shapes that occur during manufacture.

The features of the examples described herein may be combined in various ways that will be apparent after an understanding of the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible as will be apparent after an understanding of the present disclosure.

According to the present utility model there is provided a VOCs exhaust gas treatment operating system comprising an exhaust gas treatment assembly 100, a communication assembly, a desorption heat exchanger 50.

Hereinafter, specific connection relationships of the above-described components of the VOCs exhaust gas treatment operation system according to the present embodiment will be described.

In this embodiment, the VOCs exhaust gas treatment operation system is used for treating exhaust gas generated in the process of coating a ship, and the process of coating the ship in the process of manufacturing the ship is generally performed in a coating plant, and the coating plant is provided with a plurality of coating workshops to improve the efficiency of coating the ship.

In this embodiment, as shown in fig. 1, the exhaust gas treatment assemblies 100 are provided with a plurality of groups, and the exhaust gas treatment assemblies 100 are arranged in one-to-one correspondence with the painting workshops; each of the exhaust gas treatment assemblies 100 includes a prefilter 10, a zeolite wheel 20, and an RTO furnace 30, which are sequentially connected in the flow direction of the exhaust gas, and the exhaust gas generated in each of the paint workshops can be transferred to the prefilter 10 to be preliminarily filtered and then transferred to the zeolite wheel 20.

In the present embodiment, as shown in fig. 1, a desorption heat exchanger 50 is provided between the zeolite runners 20 and the RTO furnace 30 in the flow direction of the exhaust gas, the desorption heat exchanger 50 being connected in series with the zeolite runners 20 in each group of exhaust gas treatment assemblies 100; the desorption heat exchanger 50 is provided with a heat path passage and a Leng Cheng passage which can exchange heat, the heat Cheng Tonglu is communicated with the plurality of RTO furnaces 30, and the Leng Chengtong passage is communicated with the plurality of zeolite runners 20, so that the heat energy required by the zeolite runners 20 for treating the waste gas is met by utilizing high-temperature flue gas generated by burning the RTO furnaces 30 in a heat exchange mode, part of external energy is saved, the energy consumption is greatly saved, and the operation cost of the VOCs waste gas treatment system is reduced. The desorption heat exchanger 50 may be any heat exchange device that can transfer part of the heat of the hot fluid to the cold fluid.

Specifically, in the present embodiment, as shown in fig. 1, each zeolite rotor 20 has an exhaust gas inlet 21, a thermal desorption gas inlet 23, a thermal desorption gas outlet 22, and a combustion delivery port 24; the waste gas inlet 21 is communicated with the prefilter 10, the thermal desorption air inlet 23 and the thermal desorption air outlet 22 are respectively communicated with two ends of a Leng Chengtong path in the desorption heat exchanger 50, the combustion conveying port 24 is communicated with the RTO furnace 30, waste gas entering the cold Cheng Tonglu from the zeolite runner 20 is conveyed back to the zeolite runner 20 after being heated, and the heated organic waste gas is concentrated and desorbed by the zeolite runner 20 and then conveyed into the RTO furnace 30 through the combustion conveying port 24 for combustion treatment.

More specifically, both ends of the cold path of the desorption heat exchanger 50 are respectively formed as a cold path air inlet 53 and a Leng Cheng air outlet 54, the Leng Cheng air inlet 53 communicates with the thermal desorption air outlet 22, and the Leng Cheng air outlet 54 communicates with the thermal desorption air inlet 23; the two ends of the thermal path of the desorption heat exchanger 50 are respectively formed into a thermal path air inlet 51 and a thermal path air outlet 52, and the thermal path air inlet 51 is communicated with the RTO furnace 30, so that high-temperature flue gas generated by the combustion of the RTO furnace 30 enters the heat Cheng Tonglu through the thermal path air inlet 51 to exchange heat with the cold Cheng Tonglu.

In this embodiment, as shown in fig. 1, the communication assembly is used to communicate multiple groups of exhaust gas treatment assemblies 100, so that part of the components in the exhaust gas treatment assemblies 100 are communicated in parallel; specifically, the communication assembly includes a first communication pipe 41 for communicating the plurality of zeolite runners 20 and a second communication pipe 42 for communicating the plurality of RTO furnaces 30, the first communication pipe 41 connecting the zeolite runners 20 in each group of exhaust gas treatment assemblies 100 in parallel so that each prefilter 10 communicates with the zeolite runners 20 in each group of exhaust gas treatment assemblies 100, respectively, so that the exhaust gas can be delivered to one or more zeolite runners 20 as needed for concentration and desorption; the second communication pipe 42 connects the RTO furnaces 30 in each set of exhaust treatment assemblies 100 in parallel such that each zeolite wheel 20 is in communication with the RTO furnaces 30 in each set of exhaust treatment assemblies 100, respectively, so that exhaust gas may be delivered to one or more RTO furnaces 30 as required for combustion.

Further, in the present embodiment, as shown in fig. 1, each group of exhaust gas treatment assemblies 100 further includes an adsorption blower 61 provided between the prefilter 10 and the zeolite rotor 20, a desorption blower 62 provided between the zeolite rotor 20 and the desorption heat exchanger 50, and an RTO blower 63 provided between the zeolite rotor 20 and the RTO furnace 30 in the exhaust gas flow direction, to achieve the conveyance of exhaust gas in the exhaust gas treatment assemblies 100. In an embodiment, the adsorption blower 61, the desorption blower 62 and the RTO blower 63 may be blower devices capable of exhausting gas.

Further, in the present embodiment, as shown in fig. 1, the first communication pipe 41 is provided between the adsorption blower 61 and the zeolite wheels 20 so that each prefilter 10 can communicate with a plurality of zeolite wheels 20; the second communication pipe 42 is provided between the RTO blower 63 and the RTO furnace 30 so that each zeolite rotor 20 can communicate with a plurality of RTO furnaces 30.

In order to open the zeolite runners 20 and the RTO furnace 30 in an appropriate number during the treatment of the exhaust gas to meet the requirements of the exhaust gas treatment and achieve the purpose of efficient treatment, in a preferred embodiment, as shown in fig. 1, the VOCs exhaust gas treatment operation system further comprises a detection assembly connected to the communication assembly, i.e. the first communication pipe 41 and the second communication pipe 42 are respectively provided with the detection assembly, specifically, the detection assembly comprises a concentration detection member 71 for detecting the concentration of the exhaust gas and a pressure detection member 72 for detecting the wind pressure, and the higher the parameters of concentration and wind pressure, the higher the activated number of the zeolite runners 20 and the RTO furnace 30 is, the signal parameters fed back by the concentration detection member 71 and the pressure detection member 72 are activated. In this embodiment, the concentration detecting member 71 may be a FID tester, and the pressure detecting member 72 may be a anemometer.

Further, in this embodiment, as shown in fig. 1, a valve group for controlling on/off of the gas path is further provided in each group of the exhaust gas treatment assemblies 100, specifically, the valve group includes an adsorption valve 81 provided between the prefilter 10 and the zeolite rotor 20, a desorption valve 82 provided between the zeolite rotor 20 and the desorption heat exchanger 50, an RTO valve 83 provided between the zeolite rotor 20 and the RTO furnace 30, and a heat extraction valve 84 provided between the desorption heat exchanger 50 and the RTO furnace 30, and activation of each module of the exhaust gas treatment assemblies 100 is achieved by opening or closing each valve block in the valve group.

In addition, the valve block is preferably an electric valve, and the adsorption valve 81 and the RTO valve 83 are respectively connected with the detection assembly in a communication manner, so that when the concentration and wind pressure parameters detected by the detection assembly reach preset thresholds, one or more adsorption valves 81 and RTO valves 83 can be automatically opened to enable one or more zeolite runners 20 and RTO furnaces 30.

Further, in the present embodiment, as shown in fig. 1, the VOCs exhaust gas treatment operation system further includes a heat recovery unit 90 for recovering a large amount of heat energy generated by the combustion of the RTO furnace 30, specifically, the heat recovery unit 90 communicates with the RTO furnace 30 and the heat path air outlet 52 of the heat path, respectively, to uniformly recover the heat energy generated by the combustion of the RTO furnace 30 and the heat energy after heat exchange in the desorption heat exchanger 50.

Further, in this embodiment, as shown in fig. 1, a bypass valve 85 is further disposed between the heat energy recovery unit 90 and the RTO furnace 30, and is used for controlling the on-off of the RTO furnace 30 and the heat energy recovery unit 90, and the bypass valve 85 is opened after the combustion of the exhaust gas is completed, so as to realize the delivery of the high-temperature flue gas to the heat energy recovery unit 90.

According to the VOCs waste gas treatment operation system, pipelines and control systems of a plurality of independent waste gas treatment assemblies are optimized, so that a system for treating organic waste gas of a plurality of coating workshops is integrated, and different numbers of zeolite rotating wheels and RTO furnaces are switched according to actual working conditions to treat waste gas, so that the requirements of coating operation are met; the heat energy generated by the RTO furnace is applied to the concentration and desorption of the zeolite rotating wheel through the desorption heat exchanger, so that partial external energy is saved, the 24-hour full-open condition of the traditional VOCs waste gas treatment device is changed, the consumption of electric energy and natural gas is greatly reduced, and the running cost of the VOCs waste gas treatment system is reduced.

According to the ship coating plant provided by the second aspect of the utility model, the ship coating plant comprises a plurality of coating workshops, the organic waste gas treatment requirements of the coating workshops can be met only by one set of VOCs waste gas treatment operation system, the requirements of coating operation are ensured, the emission requirements are met, and the ship spraying cost is reduced.

Finally, it should be noted that: the foregoing examples are merely specific embodiments of the present application, and are not intended to limit the scope of the present application, but the present application is not limited thereto, and those skilled in the art will appreciate that while the foregoing examples are described in detail, the present application is not limited thereto. Any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or make equivalent substitutions for some of the technical features within the technical scope of the disclosure of the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A VOCs exhaust gas treatment operating system for treating exhaust gas generated in a marine vessel painting process, the VOCs exhaust gas treatment operating system comprising:

2. The VOCs exhaust gas treatment operating system according to claim 1, wherein the zeolite wheel has an exhaust gas inlet, a thermal desorption outlet, and a combustion delivery port;

3. The VOCs exhaust treatment operating system according to claim 1, wherein each set of said exhaust treatment assemblies further comprises, in the direction of flow of said exhaust gas:

4. The VOCs exhaust treatment operating system according to claim 3, wherein said first communication pipe is provided between said adsorption blower and said zeolite wheels such that each of said prefilter devices is in communication with a plurality of said zeolite wheels;

5. The VOCs exhaust treatment operating system according to claim 4 further comprising a detection assembly coupled to the communication assembly, the detection assembly comprising a concentration detection member and a pressure detection member.

6. The VOCs exhaust treatment operating system according to claim 1, wherein each set of exhaust treatment assemblies is further provided with a valve set for controlling on-off of the gas path, the valve set comprising:

an RTO valve disposed between the zeolite wheel and the RTO furnace;

7. The VOCs exhaust treatment operating system according to claim 1, wherein said VOCs exhaust treatment operating system further comprises:

8. The VOCs exhaust treatment operating system according to claim 7, wherein a bypass valve is further provided between the heat energy recovery unit and the RTO furnace.

9. The VOCs exhaust treatment operating system according to claim 1, wherein the zeolite wheels in each set of the exhaust treatment assemblies are connected in parallel such that each of the prefilter devices is respectively connected to the zeolite wheels in each set of the exhaust treatment assemblies; the desorption heat exchanger is connected with each zeolite rotating wheel in series; the RTO furnaces in each set of the exhaust treatment assemblies are connected in parallel such that each of the zeolite wheels is connected with the RTO furnaces in each set of the exhaust treatment assemblies, respectively.

10. A ship painting plant comprising the VOCs exhaust gas treatment operating system according to any one of claims 1 to 9, said ship painting plant comprising a plurality of said painting plants.