VOCs treatment system

Abstract

The utility model provides a VOCs (Volatile Organic Compounds) treatment system which comprises a steam generator, a centrifugal fan, a resin adsorption tank, a condenser, an exhaust funnel, a pipeline pump and an oil-water separator, the steam generator and the centrifugal fan are respectively communicated with the resin adsorption tank through pipelines, low-pressure steam is fed into the resin adsorption tank through the steam generator, waste gas is fed into the resin adsorption tank through the centrifugal fan, the resin adsorption tank is communicated with an exhaust funnel, and exhaust operation is completed through the exhaust funnel; the resin adsorption tank is further communicated with a condenser, steam separated out through the resin adsorption tank is condensed into liquid through the condenser, the condenser is communicated with an oil-water separator through a pipeline pump, and oil-water separation treatment of the liquid is completed through the oil-water separator. The device disclosed by the utility model is reliable, stable, simple, convenient and practical to operate, reduces the emission of VOCs (Volatile Organic Compounds), reduces the emission of wastewater, reduces the energy consumption and the operation and maintenance cost on the premise of ensuring the stable operation of the process, and is beneficial to maintenance and management.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste gas treatment systems, and specifically relates to a VOCs treatment system. Background Art

[0002] VOCs (volatile organic compounds) refer to organic compounds with a saturated vapor pressure greater than 70.91 Pa at room temperature, a boiling point below 50-260°C at a standard atmospheric pressure of 101.3 kPa, and an initial distillation point equal to 250 degrees Celsius, or any organic solid or liquid that can evaporate at room temperature and pressure.

[0003] The existing treatment of light hydrocarbon waste gas generated in the tank area is complex in process, high in energy consumption, and not conducive to large-scale promotion and use.

[0004] Based on this, a VOCs treatment system is proposed. Utility Model Content

[0005] The technical problem to be solved by the present invention is to provide a VOCs treatment system in view of the deficiencies of the above-mentioned prior art, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a VOCs treatment system, including a steam generator, a centrifugal fan, a resin adsorption tank, a condenser, an exhaust pipe, a pipeline pump and an oil-water separator;

[0007] The steam generator and the centrifugal fan are respectively connected to the resin adsorption tank through pipelines, low-pressure steam is sent into the resin adsorption tank through the steam generator, and exhaust gas is sent into the resin adsorption tank through the centrifugal fan;

[0008] The resin adsorption tank is connected to an exhaust pipe, and the exhaust operation is completed through the exhaust pipe;

[0009] The resin adsorption tank is also connected to a condenser, and the steam analyzed by the resin adsorption tank is condensed into liquid through the condenser. The condenser is connected to an oil-water separator through a pipeline pump, and the oil-water separation process of the liquid is completed through the oil-water separator.

[0010] As a further illustration of the present invention, the resin adsorption tank is provided with a macroporous adsorption resin, and the specific surface area of ​​the macroporous adsorption resin is at least 1200m 2 / g.

[0011] As a further illustration of the present invention, the low-pressure steam sent into the resin adsorption tank by the steam generator enters from the top and exits from the bottom, and the exhaust gas sent into the resin adsorption tank by the centrifugal fan enters from the bottom and exits from the top.

[0012] As a further illustration of the present invention, the condenser is connected to a condensate collecting tank and a condensate cooling tower. The condensate collecting tank is used to collect condensate and waste water for cooling, and the condensate cooling tower is used to cool the circulating water.

[0013] As a further illustration of the present invention, the circulating water is normal temperature circulating water.

[0014] As a further illustration of the present invention, the oil-water separator is connected to a controller, and the steam generator, centrifugal fan, resin adsorption tank, condenser, exhaust pipe, pipeline pump and controller are respectively connected to an electric control cabinet.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The utility model is reliable and stable, easy and practical to operate, with clear and convenient logistics routes, easy operation and management, easy maintenance, saving power consumption and operating costs. At the same time, under the premise of ensuring stable operation of the process, it reduces VOCs emissions, reduces wastewater emissions, reduces energy consumption and operating and maintenance costs, and is conducive to maintenance and management. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a top view of the overall structure of the utility model.

[0019] Description of reference numerals:

[0020] 1-steam generator; 2-centrifugal fan; 3-resin adsorption tank; 4-condenser; 5-exhaust pipe; 6-pipeline pump; 7-oil-water separator; 8-controller; 9-electrical control cabinet. DETAILED DESCRIPTION

[0021] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0022] like Figure 1 and Figure 2 As shown, the utility model provides a technical solution: a VOCs treatment system, including a steam generator 1, a centrifugal fan 2, a resin adsorption tank 3, a condenser 4, an exhaust pipe 5, a pipeline pump 6 and an oil-water separator 7;

[0023] The steam generator 1 and the centrifugal fan 2 are respectively connected to the resin adsorption tank 3 through pipelines, low-pressure steam is fed into the resin adsorption tank 3 through the steam generator 1, and exhaust gas is fed into the resin adsorption tank 3 through the centrifugal fan 2;

[0024] The resin adsorption tank 3 is provided with a macroporous adsorption resin, and the specific surface area of ​​the macroporous adsorption resin is at least 1200m 2 / g, macroporous adsorption resin is an organic synthetic material, which does not contain metal and other impurities compared with carbonaceous materials, so the equipment operation stability and safety are more guaranteed; and macroporous adsorption resin has good hydrophobicity, and steam can be used directly for regeneration, which can effectively reduce steam energy consumption compared with carbonaceous materials; macroporous adsorption resin does not require material replacement, and although the single investment is higher than that of carbonaceous materials, carbonaceous materials need to replace materials and dispose of solid hazardous waste during long-term operation, and the later investment costs are relatively large.

[0025] The steam generator 1 sends low-pressure steam into the resin adsorption tank 3, which enters upward and exits downward, and regularly desorbs the saturated macroporous adsorption resin. The centrifugal fan 2 sends exhaust gas into the resin adsorption tank 3, which enters downward and exits upward.

[0026] The resin adsorption tank 3 is connected to the exhaust pipe 5, and the exhaust operation is completed through the exhaust pipe 5;

[0027] The resin adsorption tank 3 is also connected to a condenser 4. The steam analyzed by the resin adsorption tank 3 is condensed into liquid through the condenser 4. The condenser 4 is connected to a condensate collection tank and a condensate cooling tower. The condensate collection tank is used to collect condensate and waste water for cooling. The condensate cooling tower is used to cool the circulating water.

[0028] The circulating water is normal temperature circulating water.

[0029] The condenser 4 is connected to an oil-water separator 7 via a pipeline pump 6 , and the oil-water separation process of the liquid is completed by the oil-water separator 7 .

[0030] The oil-water separator 7 is connected to a controller 8 , and the steam generator 1 , centrifugal fan 2 , resin adsorption tank 3 , condenser 4 , exhaust pipe 5 , pipeline pump 6 and controller 8 are respectively connected to an electric control cabinet 9 .

[0031] During specific use, the pretreated waste gas is sent into the resin adsorption tank 3 through the centrifugal fan 2, and is adsorbed and recovered using the macroporous adsorption resin. When the waste gas generated by the waste oil in the waste gas at the outlet of the resin adsorption tank 3 reaches the set value, the centrifugal fan 2 is turned off and the adsorption is stopped.

[0032] After the adsorption stops, the resin is desorbed by sending low-pressure steam from the steam generator 1 into the resin adsorption tank 3. The waste gas steam generated by the desorbed waste oil is condensed by the condenser 4 and enters the oil-water separator 7 to recover the waste gas generated by the waste oil.

[0033] After the desorption is completed, the resin adsorption tank 3 is purged with nitrogen to cool down and then the next adsorption process can be carried out, and the cycle is repeated to complete the waste gas treatment.

[0034] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A VOCs treatment system, characterized by: It comprises a steam generator (1), a centrifugal fan (2), a resin adsorption tank (3), a condenser (4), an exhaust pipe (5), a pipeline pump (6) and an oil-water separator (7); The steam generator (1) and the centrifugal fan (2) are respectively connected to the resin adsorption tank (3) through pipelines, low-pressure steam is fed into the resin adsorption tank (3) through the steam generator (1), and exhaust gas is fed into the resin adsorption tank (3) through the centrifugal fan (2); The resin adsorption tank (3) is connected to an exhaust pipe (5), and exhaust operation is completed through the exhaust pipe (5); The resin adsorption tank (3) is also connected to a condenser (4), and the steam analyzed by the resin adsorption tank (3) is condensed into liquid through the condenser (4). The condenser (4) is connected to an oil-water separator (7) through a pipeline pump (6), and the oil-water separation treatment of the liquid is completed through the oil-water separator (7).

2. A VOCs treatment system according to claim 1, characterized in that: The resin adsorption tank (3) is provided with a macroporous adsorption resin, and the specific surface area of ​​the macroporous adsorption resin is at least 1200m 2 / g.

3. A VOCs treatment system according to claim 1, characterized in that: The low-pressure steam sent by the steam generator (1) into the resin adsorption tank (3) enters upward and exits downward, and the waste gas sent by the centrifugal fan (2) into the resin adsorption tank (3) enters downward and exits upward.

4. A VOCs treatment system according to claim 1, characterized in that: The condenser (4) is connected to a condensate collecting tank and a condensate cooling tower. The condensate collecting tank is used to collect condensate and waste water for cooling. The condensate cooling tower is used to cool circulating water.

5. A VOCs treatment system according to claim 4, characterized in that: The circulating water is normal temperature circulating water.

6. A VOCs treatment system according to claim 1, characterized in that: The oil-water separator (7) is connected to a controller (8), and the steam generator (1), centrifugal fan (2), resin adsorption tank (3), condenser (4), exhaust pipe (5), pipeline pump (6) and controller (8) are respectively connected to an electric control cabinet (9).

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