Organic waste gas treatment system for dewaxing room

Abstract

The utility model discloses an organic waste gas treatment system for a dewaxing room. The organic waste gas treatment system comprises a dewaxing kettle, a condensation recovery device, a spray cooling tower, a pretreatment filter and an activated carbon adsorption box, wax steam generated in the dewaxing process of the dewaxing kettle is introduced into the condensation recovery device through the arranged connecting pipe, so that wax in the wax steam is condensed to form liquid wax which is discharged into the receiving bin, and the wax steam containing non-methane hydrocarbon and waste gas in the receiving bin enter the spray cooling tower through the exhaust pipe and the waste gas collecting pipe respectively; the method comprises the following steps: cooling in a spray cooling tower, condensing wax steam containing non-methane hydrocarbon and wax in waste gas in a receiving bin again to form wax particles, filtering the non-methane hydrocarbon waste gas in a pretreatment filter, and filtering the filtered non-methane hydrocarbon waste gas in an activated carbon adsorption box, the non-methane total hydrocarbon is adsorbed in the activated carbon adsorption box, and then waste gas is discharged, so that the harm to the environment and human bodies caused by direct discharge is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a dewaxing room waste treatment technical field especially relates to a kind of dewaxing room organic waste gas treatment system. BACKGROUND

[0002] During wax melting process, wax organic component (non-methane total hydrocarbon VOCs) has peculiar smell generated by heating. When wax is heated more than 200 DEG C, main component propylene aldehyde of product is generated, it has strong pungent taste, has stronger irritation to nose, eye, throat mucous membrane, can cause rhinitis, pharyngitis, tracheitis and other respiratory diseases. And non-methane total hydrocarbon exceeds certain concentration, in addition to directly harmful to human health, under certain conditions, photochemical smog can be generated by sunlight irradiation, cause harm to environment and human.

[0003] Therefore, the utility model is proposed to solve the above technical problems. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of dewaxing room organic waste gas treatment system to solve the technical problems that waste gas in the wax melting process in the dewaxing room of prior art is directly discharged and can cause harm to environment and human body.

[0005] The technical scheme of the utility model is as follows: a kind of dewaxing room organic waste gas treatment system, comprising:

[0006] Dewaxing kettle;

[0007] Condensing recovery device, condensing recovery device is connected with dewaxing kettle by connecting pipe intercommunication, condensing recovery device is provided with receiving bin below, receiving bin is connected with waste gas collection pipe, condensing recovery device is connected with exhaust pipe;

[0008] Spray cooling tower, waste gas collection pipe end away from receiving bin and exhaust pipe end away from condensing recovery device are all connected with the gas inlet of spray cooling tower intercommunication;

[0009] Pretreatment filter, the gas inlet of pretreatment filter is connected with the gas outlet of spray cooling tower intercommunication;

[0010] Activated carbon adsorption box, activated carbon adsorption box is connected with the gas outlet of pretreatment filter intercommunication.

[0011] Further, fire damper is connected at the gas inlet of spray cooling tower.

[0012] Further, pretreatment filter includes plate filter and bag filter intercommunication in sequence.

[0013] Further, the outer wall of the spray cooling tower is uniformly provided with a plurality of groups of spray systems in the circumferential direction, the spray system comprises a water tank, a circulating water pump is arranged in the water tank, a water pipe is connected to the water outlet of the circulating water pump, an atomizing nozzle is arranged at the end of the water pipe away from the circulating water pump, and the atomizing nozzle is located at the top of the spray cooling tower.

[0014] Further, a demister is arranged at the gas outlet of the spray cooling tower, the demister is used for removing mist from the organic waste gas after washing by the spray cooling tower, and the demister is communicated with the pretreatment filter.

[0015] Further, the condensing recovery device comprises a condenser, and an electric heating coil is arranged on the condenser.

[0016] Further, a centrifugal fan is further arranged, the centrifugal fan is communicated with the activated carbon adsorption tank, and the centrifugal fan is used for discharging the waste gas through the chimney.

[0017] Further, a cooling air duct is sleeved on the condensing recovery device and arranged coaxially, a high-pressure fan is arranged at the air inlet of the cooling air duct, and the high-pressure fan is used for introducing air into the cooling air duct to cool the condensing recovery device.

[0018] By adopting the above technical scheme, the utility model has the following beneficial effects:

[0019] The wax steam generated in the dewaxing process of the dewaxing kettle is introduced into the condensing recovery device through the connecting pipe, so that the wax in the wax steam is condensed to form liquid wax and is discharged to the material collecting bin, the wax steam containing non-methane total hydrocarbon and the waste gas in the material collecting bin are respectively introduced into the spray cooling tower through the exhaust pipe and the waste gas collecting pipe, are cooled in the spray cooling tower, the wax in the wax steam containing non-methane total hydrocarbon and the waste gas in the material collecting bin is condensed again to form wax particles, the non-methane total hydrocarbon waste gas is introduced into the pretreatment filter to be filtered, the filtered non-methane total hydrocarbon waste gas is introduced into the activated carbon adsorption tank, the non-methane total hydrocarbon is adsorbed in the activated carbon adsorption tank, and then the waste gas is discharged, so that the harm to the environment and the human body caused by direct discharge is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings, which are part of the present application, serve to provide a further understanding of the utility model, and the schematic embodiments of the utility model and the description thereof serve to explain the utility model, but do not constitute an improper limitation on the utility model. Obviously, the drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0021] Fig. 1 The structure top view of the dewaxing room organic waste gas treatment system provided by the present embodiment is shown in the drawings.

[0022] Fig. 2 A flow chart of the organic waste gas treatment system in the dewaxing room provided by the embodiment of the present application is shown.

[0023] The reference signs: 1, chimney; 2, centrifugal fan; 3, activated carbon adsorption box; 4, spray cooling tower; 5, material collecting bin; 6, condensation recovery device; 7, dewaxing room; 8, dewaxing kettle; 9, waste gas collecting pipe; 10, exhaust pipe; 11, fire damper.

[0024] It should be noted that the drawings and the written description are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0025] The specific embodiments of the present application are further described in detail with reference to the accompanying drawings.

[0026] Referring to Figs. 1-2 The embodiment of the present application provides a kind of organic waste gas treatment system in dewaxing room, including: dewaxing kettle 8, condensation recovery device 6, spray cooling tower 4, pre-treatment filter and activated carbon adsorption box 3, condensation recovery device 6 is connected with dewaxing kettle 8 by connecting pipe intercommunication, condensation recovery device 6 below is provided with material collecting bin 5, material collecting bin 5 is connected with waste gas collecting pipe 9, condensation recovery device 6 is connected with exhaust pipe 10, waste gas collecting pipe 9 deviates from the one end of material collecting bin 5 and the one end of exhaust pipe 10 deviates from condensation recovery device 6, and the gas inlet of spray cooling tower 4 is interconnected, the gas outlet of spray cooling tower 4 is connected with the gas inlet of pre-treatment filter, and the gas outlet of pre-treatment filter is connected with activated carbon adsorption box 3.

[0027] It should be noted that activated carbon adsorption box 3 is filled with activated carbon filter layer, because activated carbon solid surface has unbalanced and saturated molecular attraction or chemical strength, so when activated carbon solid surface contacts with gas, it can attract gas molecules, so that it is gathered on activated carbon solid surface, so that waste gas and smell are adsorbed;Material collecting bin 5 is provided with wax receiving trolley, and liquid wax formed by cooling wax steam (containing non-methane total hydrocarbon) in condensation recovery device 6 is collected;Connecting pipe is used to pass into condensation recovery device 6 the wax steam generated in the dewaxing process of dewaxing kettle 8;Dewaxing kettle 8, condensation recovery device 6 and material collecting bin 5 are all arranged in dewaxing room 7;The non-methane total hydrocarbon content in waste gas treated by the organic waste gas treatment system in dewaxing room provided by the embodiment of the present application is less than 50mg / m 3 , and the emission rate is less than 0.8kg / m 3 .

[0028] In the above scheme, first, the wax steam generated in the dewaxing kettle 8 is introduced into the condensing recovery device 6 through the connecting pipe, so that the wax in the wax steam is condensed to form liquid wax and is discharged to the material collecting bin 5, and the wax steam containing non-methane total hydrocarbon and the exhaust gas in the material collecting bin 5 are introduced into the spray cooling tower 4 through the exhaust pipe 10 and the exhaust gas collecting pipe 9 respectively, and are cooled in the spray cooling tower 4, so that the wax in the wax steam containing non-methane total hydrocarbon and the exhaust gas in the material collecting bin 5 is condensed again to form wax particles, the non-methane total hydrocarbon exhaust gas is filtered in the pretreatment filter, the filtered non-methane total hydrocarbon exhaust gas is introduced into the activated carbon adsorption box 3, the non-methane total hydrocarbon is adsorbed in the activated carbon adsorption box 3, and then the exhaust gas is discharged, thereby avoiding the harm to the environment and the human body caused by direct discharge.

[0029] In some possible embodiments, referring to Fig. 2 As shown, the air inlet of the spray cooling tower 4 is connected with a fireproof valve 11, which is used to avoid the exhaust gas from entering the spray cooling tower 4 when a fire occurs, so as to prevent the fire from spreading to the spray cooling tower 4 and other equipment areas.

[0030] In some possible embodiments, the pretreatment filter sequentially includes a plate filter and a bag filter connected in sequence, wherein the plate filter is used to filter the larger particle impurities in the exhaust gas, reduce the filtering load of the bag filter, and is fixed by a detachable clamping manner, so as to facilitate disassembly, cleaning and replacement; the bag filter is used to filter the smaller particle impurities in the exhaust gas, and the bag filter is a fiber cloth bag, so as to ensure the purification effect of dust particles.

[0031] In some possible embodiments, a plurality of groups of spray systems are uniformly arranged on the outer wall of the spray cooling tower 4 in the circumferential direction, and each group of spray systems includes a water tank, a circulating water pump is arranged in the water tank, a water pipe is connected to the outlet end of the circulating water pump, an atomizing nozzle is arranged at the end of the water pipe away from the circulating water pump, and the atomizing nozzle is located at the top of the spray cooling tower 4.

[0032] It should be noted that after the steam containing exhaust gas enters the spray cooling tower 4, the steam moves from bottom to top, the circulating water in the water tank moves from top to bottom, the water mist is formed at the top of the spray cooling tower 4, and the steam is contacted and cooled by the water mist, the spray cooling tower 4 is provided with a filler, which can strengthen the contact time of the steam and the water mist, ensure that a large amount of steam is brought into the water, and the wax contained in the exhaust gas also condenses and falls at the bottom of the spray cooling tower 4, and the exhaust gas washed by the water mist is discharged through the top of the spray cooling tower 4.

[0033] In some possible embodiments, a demister is arranged at the air outlet of the spray cooling tower 4, and the demister is used to remove the mist from the organic exhaust gas washed by the spray cooling tower 4, and the demister is connected with the pretreatment filter.

[0034] In the above scheme, the waste gas discharged from the top of the spray cooling tower 4 enters the mist eliminator, which removes the mist in the waste gas and passes it into the pretreatment filter.

[0035] In some possible embodiments, the condensation recovery device 6 comprises a condenser provided with an electric heating coil, and part of the liquid wax condenses on the wall of the condenser during condensation of the wax vapor, and the electric heating coil is arranged to melt the solid wax on the wall of the condenser and flow into the collection bin 5, so as to ensure the condensation effect of the condenser, and the solid wax in the collection bin 5 can be conveyed out of the collection bin 5 by the wax receiving trolley.

[0036] In some possible embodiments, referring to Fig. 1 With Fig. 2 As shown in the figure, the dewaxing room organic waste gas treatment system provided by the embodiment of the present application further comprises a centrifugal fan 2, the centrifugal fan 2 is connected with the activated carbon adsorption box 3, the centrifugal fan 2 is used for discharging the waste gas through the chimney 1, the chimney 1 is supported by an angle steel tower, a rainproof shed is arranged above the centrifugal fan 2, and a ladder and a sampling platform are arranged at the chimney 1.

[0037] In some possible embodiments, the condensation recovery device 6 is sleeved with a coaxially arranged cooling air duct, a high-pressure fan is arranged at the air inlet of the cooling air duct, and the high-pressure fan is used for introducing air into the cooling air duct to cool the condensation recovery device 6 and ensure the collection efficiency of the condensation recovery device 6.

[0038] The specific embodiment is only an explanation of the present application, and is not a limitation of the present application, and those skilled in the art can make modifications to the embodiment without creative contribution after reading the present specification, but as long as the modifications are within the protection scope of the present application, they are protected by the patent law.

Claims

1. A system for treating organic waste gas from a dewaxing room, characterized in that, include: Dewaxing kettle (8); A condensation recovery device (6) is connected to the dewaxing kettle (8) via a connecting pipe. A receiving bin (5) is provided below the condensation recovery device (6). A waste gas collection pipe (9) is connected to the receiving bin (5). An exhaust pipe (10) is connected to the condensation recovery device (6). The exhaust gas collection pipe (9) is connected to the air inlet of the spray cooling tower (4) at one end away from the receiving hopper (5) and the exhaust pipe (10) is connected to the air inlet of the spray cooling tower (4) at one end away from the condensation recovery device (6). A pretreatment filter, the air inlet of which is connected to the air outlet of the spray cooling tower (4); Activated carbon adsorption box (3) is connected to the outlet end of the pretreatment filter.

2. The organic waste gas treatment system for dewaxing room according to claim 1, characterized in that, A fire damper (11) is connected to the air inlet of the spray cooling tower (4).

3. The organic waste gas treatment system for dewaxing room according to claim 2, characterized in that, The pretreatment filter comprises, in sequence, a plate filter and a bag filter connected together.

4. The organic waste gas treatment system for dewaxing room according to claim 3, characterized in that, The outer wall of the spray cooling tower (4) is uniformly provided with multiple spray systems along the circumferential direction. The spray system includes a water tank, a circulating water pump is provided in the water tank, a water pipe is connected to the outlet end of the circulating water pump, and an atomizing nozzle is provided at the end of the water pipe away from the circulating water pump. The atomizing nozzle is located at the top of the spray cooling tower (4).

5. The organic waste gas treatment system for dewaxing room according to claim 4, characterized in that, A demister is provided at the outlet of the spray cooling tower (4). The demister is used to remove mist from the organic waste gas after it has been washed by the spray cooling tower (4). The demister is connected to the pretreatment filter.

6. The organic waste gas treatment system for dewaxing room according to claim 1, characterized in that, The condensation recovery device (6) includes a condenser, on which an electric heating coil is provided.

7. The organic waste gas treatment system for dewaxing room according to claim 1, characterized in that, It also includes a centrifugal fan (2), which is connected to the activated carbon adsorption box (3) and is used to discharge waste gas through the chimney (1).

8. The organic waste gas treatment system for dewaxing room according to claim 6, characterized in that, The condensation recovery device (6) is fitted with a coaxial cooling duct. A high-pressure fan is installed at the air inlet of the cooling duct. The high-pressure fan is used to introduce air into the cooling duct to cool the condensation recovery device (6).

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