CN111237785A

CN111237785A - Waste gas treatment, combustion, preheating and utilization device for coating and drying furnace

Info

Publication number: CN111237785A
Application number: CN201811436401.6A
Authority: CN
Inventors: 周梦宏
Original assignee: Hubei Zhongtu Technology Co ltd
Current assignee: Hubei Zhongtu Technology Co ltd
Priority date: 2018-11-28
Filing date: 2018-11-28
Publication date: 2020-06-05

Abstract

The invention discloses a waste gas treatment, combustion, preheating and utilization device of a coating drying furnace, which comprises an oven waste gas pipe, a paint solvent waste gas pipe, a buffer bottle and a high-temperature cracking furnace, wherein the oven waste gas pipe and the paint solvent waste gas pipe are communicated with the buffer bottle, the buffer bottle is fixedly communicated with a preheating bottle through an air guide pipe, one end of the preheating bottle, which is far away from the buffer bottle, is communicated with the high-temperature cracking furnace through an air outlet pipe, the waste gas is preheated before being introduced into the high-temperature cracking furnace, so that the load of the high-temperature cracking furnace is reduced, the cost is reduced, a waste heat recoverer is additionally arranged at an air outlet of the high-temperature cracking furnace, the waste heat recoverer is used for recovering waste heat, so that the water introduced into the waste gas is heated, hot water is communicated with a copper pipe, the copper pipe is spirally wound on the preheating bottle, Reducing cost and protecting environment.

Description

Waste gas treatment, combustion, preheating and utilization device for coating and drying furnace

Technical Field

The invention relates to a waste gas treatment device of a coating drying furnace, in particular to a waste gas treatment, combustion, preheating and utilization device of the coating drying furnace.

Background

The curing furnace adopts direct heating, the waste gas generated by direct combustion and the harmful waste gas of a paint solvent need to be treated by the pyrolysis furnace, the organic waste gas is generally combustible gas, can be completely combusted into carbon dioxide and water under the conditions of temperature of 600-800 ℃ and residence time of 0.3-0.5 seconds and then is discharged, however, if the waste gas is directly introduced into the pyrolysis furnace without any treatment, the load of the pyrolysis furnace is overlarge, the service life of the pyrolysis furnace is greatly shortened, the energy consumption is large, the cost is overlarge, and if the waste gas is directly discharged, some non-combustible waste gas can pollute the air quality, and the temperature of the discharged gas is overhigh, so that the thermal pollution is caused.

Disclosure of Invention

1. Problems to be solved

The invention aims to provide a waste gas treatment, combustion and preheating utilization device of a coating drying furnace, which is used for preheating waste gas before the waste gas is introduced into a pyrolysis furnace, so that the load of the pyrolysis furnace is reduced, the cost is reduced, a waste heat recoverer is additionally arranged at an air outlet of the pyrolysis furnace, the thermal pollution is reduced, thermal energy is recycled, the energy is saved, the environment is protected, and an activated carbon adsorption box is arranged at the air outlet of the waste heat recoverer, so that the waste gas which is difficult to combust can be adsorbed, and the pollution to the air is reduced.

2. Technical scheme

In order to achieve the purpose, the invention provides the following technical scheme:

the waste gas treatment, combustion and preheating utilization device of the coating and drying furnace comprises an oven waste gas pipe, a paint solvent waste gas pipe, a buffer bottle and a high-temperature cracking furnace, the oven waste gas pipe and the paint solvent waste gas pipe are both communicated with a buffer bottle, the buffer bottle is fixedly communicated with a preheating bottle through an air duct, one end of the preheating bottle, which is far away from the buffer bottle, is communicated with a pyrolysis furnace through an air outlet pipe, an air outlet of the pyrolysis furnace is communicated with an air inlet end of a waste heat recoverer through a communicating pipe, an air outlet end of the waste heat recoverer is communicated with an adsorption box, a water inlet of the waste heat recoverer is communicated with a copper pipe through a first connecting pipe, the copper pipe is spirally wound on the preheating bottle, and the end of the copper pipe far away from the first connecting pipe is fixedly communicated with the water inlet end of the water pump, the water outlet of the water pump is communicated with the water inlet of the water tank through a water pipe, the water outlet of the water tank is communicated with the water outlet of the waste heat recoverer through a second connecting pipe, and the top cover of the water tank is communicated with an external water source through a water inlet pipe.

As a further scheme of the invention: the upper end surface of the adsorption box is provided with a plurality of air outlets distributed at equal intervals, and the adsorption box is provided with active carbon.

As a further scheme of the invention: adsorb box up end fixedly connected with and rotate the motor, rotate the output fixedly connected with dwang of motor, the dwang runs through the upper inner wall that adsorbs the box and passes through the bearing and be connected with the rotation of adsorbing the box, a plurality of evenly distributed's of fixedly connected with puddler on the dwang.

As a further scheme of the invention: one side of the water tank is fixedly communicated with a faucet.

As a further scheme of the invention: the lower end faces of the high-temperature cracking furnace and the waste heat recoverer are fixedly connected with a plurality of rubber pads which are distributed at equal intervals.

Compared with the prior art, the invention has the beneficial effects that:

1. the preheating treatment is carried out before the waste gas is introduced into the high-temperature cracking furnace, so that the load of the high-temperature cracking furnace is reduced, the cost is reduced, the waste heat recoverer is additionally arranged at the gas outlet of the high-temperature cracking furnace, the waste heat recoverer is used for recovering waste heat, so that the introduced water is heated, the hot water is communicated with the copper pipe, the copper pipe is spirally wound on the preheating bottle, the waste gas in the preheating bottle is preheated, a circulation is formed by the process, and the effects of saving energy, reducing cost and protecting the environment are achieved.

2. This practicality is through adsorbing the active carbon in the box, can adsorb some incombustible waste gases to reduced the pollution to the air, environmental protection more, and stir the active carbon through rotating motor, dwang and puddler, thereby promoted the adsorption effect of active carbon, feasible absorbing more comprehensive to waste gas.

Drawings

Fig. 1 is a schematic structural diagram of a waste gas treatment, combustion, preheating and utilization device of a coating drying furnace.

Fig. 2 is a partially enlarged view of the area a in fig. 1.

In the figure: 1. an oven exhaust duct; 2. a buffer bottle; 3. preheating the bottle; 4. a copper pipe; 5. an air outlet pipe; 6. a pyrolysis furnace; 7. a first connecting pipe; 8. a paint solvent exhaust conduit; 9. a water pump; 10. a water tank; 11. a faucet; 12. a second connecting pipe; 13. a waste heat recoverer; 14. rotating the motor; 15. an air outlet; 16. a stirring rod; 17. an adsorption box; 18. rotating the rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, in the embodiment of the present invention, the waste gas treatment, combustion, preheating and utilization apparatus for a coating and drying furnace includes an oven waste gas pipe 1, a paint solvent waste gas pipe 8, a buffer bottle 2 and a pyrolysis furnace 6, wherein the oven waste gas pipe 1 and the paint solvent waste gas pipe 8 are both communicated with the buffer bottle 2, the buffer bottle 2 is fixedly communicated with a preheating bottle 3 through a gas duct, one end of the preheating bottle 3, which is far away from the buffer bottle 2, is communicated with the pyrolysis furnace 6 through a gas outlet pipe 5, waste gas is changed into carbon dioxide and water through the pyrolysis furnace 6 under the conditions of a temperature of 600-800 ℃ and a residence time of 0.3-0.5 seconds, a gas outlet of the pyrolysis furnace 6 is communicated with a gas inlet of a waste heat recovery device 13 through a communicating pipe, so as to recover gas discharged from the pyrolysis furnace 6, reduce thermal pollution, reuse energy, reduce cost and protect environment, a gas outlet of the waste heat recovery device 13 is communicated with, the waste gas which is not easy to burn can be adsorbed and treated through the active carbon in the adsorption box 17, the environment is protected, the water inlet of the waste heat recoverer 13 is communicated with the copper pipe 4 through the first connecting pipe 7, the copper pipe 4 is spirally wound on the preheating bottle 3 at equal intervals, one end of the copper pipe 4 far away from the first connecting pipe 7 is fixedly communicated with the water inlet end of the water pump 9, the water outlet of the water pump 9 is communicated with the water inlet of the water tank 10 through a water pipe, the water outlet of the water tank 10 is communicated with the water outlet of the waste heat recoverer 13 through the second connecting pipe 12, the top cover of the water tank 10 is communicated with an external water source through a water inlet pipe, after the waste gas is burnt in the high-temperature cracking furnace 6, the heat recoverer 13 is pumped for heat recovery, the hot water generated by the waste heat recoverer 13 is communicated with the water tank 10, the water in the water tank 10 is communicated with, thereby carrying out preheating treatment on the waste gas, thereby reducing the load of the pyrolysis furnace 6, reducing the cost, recycling the exhausted hot gas, preheating the waste gas introduced into the pyrolysis furnace 6, and forming a cycle by the above operation, thereby reducing the cost and reducing the pollution to the air.

The adsorption box 17 is characterized in that a plurality of air outlet holes 15 are formed in the upper end face of the adsorption box 17 and are distributed at equal intervals, active carbon is arranged on the adsorption box 17 and can adsorb waste gas which is difficult to combust through the active carbon, so that air pollution is reduced, the adsorption box is more environment-friendly, the upper end face of the adsorption box 17 is fixedly connected with a rotating motor 14, the output end of the rotating motor 14 is fixedly connected with a rotating rod 18, the rotating rod 18 penetrates through the upper inner wall of the adsorption box 17 and is rotatably connected with the adsorption box 17 through a bearing, a plurality of uniformly distributed stirring rods 16 are fixedly connected on the rotating rod 18, the rotating rod 18 and the stirring rods 16 are driven by the rotating motor 14 so as to stir the active carbon, so that the adsorption effect of the active carbon is improved, waste gas is absorbed more comprehensively, one side of the water tank 10 is fixedly communicated with a faucet 11, and hot water, the lower end faces of the high-temperature cracking furnace 6 and the waste heat recoverer 13 are fixedly connected with a plurality of rubber pads which are distributed at equal intervals, and by means of the arrangement, vibration of the device during operation is reduced, so that the device is more stable.

The type of the rotating motor 14 is Y80M1-2, the type of the water pump 9 is QDX1.5-18-0.37, the electric elements are connected with a mains supply through a power line (not shown in the figure) and powered by the mains supply, related circuits and control are the prior art, and redundant description is not repeated herein.

In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, rather than to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, should not be taken as limiting, and it should be noted that the terms "mounted" and "connected" are intended to be broadly construed, and include, for example, either fixed or removable connections, or integrally formed, mechanically connected, or indirectly connected through an intermediate medium, and the specific meaning of the terms in the present application can be understood through specific situations.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The waste gas treatment, combustion, preheating and utilization device of the coating drying furnace comprises an oven waste gas pipe (1), a paint solvent waste gas pipe (8), a buffer bottle (2) and a high-temperature cracking furnace (6), and is characterized in that the oven waste gas pipe (1) and the paint solvent waste gas pipe (8) are both communicated with the buffer bottle (2), the buffer bottle (2) is fixedly communicated with a preheating bottle (3) through a gas guide pipe, one end, far away from the buffer bottle (2), of the preheating bottle (3) is communicated with the high-temperature cracking furnace (6) through a gas outlet pipe (5), a gas outlet of the high-temperature cracking furnace (6) is communicated with a gas inlet end of a waste heat recoverer (13) through a communicating pipe, a gas outlet end of the waste heat recoverer (13) is communicated with an adsorption box (17), a water inlet of the waste heat recoverer (13) is communicated with a copper pipe (4) through a connecting pipe (7), and the end, far away from the first connecting pipe (7), of the copper pipe (4) is fixedly communicated with the water inlet end of the water pump (9), the water outlet of the water pump (9) is communicated with the water inlet of the water tank (10) through a water pipe, the water outlet of the water tank (10) is communicated with the water outlet of the waste heat recoverer (13) through a second connecting pipe (12), and the top cover of the water tank (10) is communicated with an external water source through a water inlet pipe.

2. The waste gas treatment, combustion, preheating and utilization device for the coating drying furnace as claimed in claim 1, wherein the adsorption box (17) is provided with a plurality of air outlets (15) at equal intervals on the upper end surface, and the adsorption box (17) is provided with activated carbon.

3. The exhaust gas treatment, combustion, preheating and utilization device for the coating drying oven according to claim 2, characterized in that a rotary motor (14) is fixedly connected to the upper end surface of the adsorption box (17), a rotary rod (18) is fixedly connected to the output end of the rotary motor (14), the rotary rod (18) penetrates through the upper inner wall of the adsorption box (17) and is rotatably connected with the adsorption box (17) through a bearing, and a plurality of uniformly distributed stirring rods (16) are fixedly connected to the rotary rod (18).

4. The exhaust gas treatment, combustion, preheating and utilization device of the coating drying oven according to claim 1, characterized in that a water tap (11) is fixedly communicated with one side of the water tank (10).

5. The waste gas treatment, combustion, preheating and utilization device for the coating drying furnace according to claim 1, characterized in that a plurality of rubber pads are fixedly connected to the lower end surfaces of the pyrolysis furnace (6) and the waste heat recoverer (13) and are distributed at equal intervals.