A waste gas treatment device for diethyl phthalate production

Abstract

The utility model relates to the field of waste gas treatment, and discloses a waste gas treatment device for diethyl phthalate production, comprising a condensing cylinder, a serpentine tube fixedly connected to the inner middle side of the condensing cylinder, one end of the serpentine tube fixedly connected to an air inlet pipe, the other end of the serpentine tube fixedly connected to one end of an air outlet pipe, the other end of the air outlet pipe fixedly connected to the upper left side of a cooling tank, an air inlet pipe fixedly connected to the upper middle side of the cooling tank, the right end of the air inlet pipe fixedly connected to the lower left side of a spray tank, and a water pump arranged at the rear side of the spray tank. In the utility model, after the waste gas is treated by the spray tank and the serpentine tube, diethyl phthalate is dissolved and removed by ethanol, and part of the waste gas is liquefied and enters the cooling tank, and the liquid in the cooling tank and the mixture of diethyl phthalate and ethanol in the spray tank can be recycled, thereby solving the problem of waste of resources and costs.

Description

Technical Field

[0001] The utility model relates to the field of waste gas treatment, in particular to a waste gas treatment device for diethyl phthalate production. Background Art

[0002] Diethyl phthalate, with the molecular formula C12H14O4, is a commonly used organic compound, commonly found in industrial production and laboratory research. It is usually used as a raw material for plasticizers, solvents and synthetic fragrances. It has good chemical stability and solubility and is widely used in plastics, resins, inks and coatings. In related industrial and chemical fields, the production process and application technology of diethyl phthalate have always attracted much attention to meet the needs of different industries and promote the development of related fields;

[0003] The waste gas treatment device of diethyl phthalate includes an adsorption tower, a desorption tower, a waste gas heating device, a cooling purification device and a treatment system. The packing adsorption tower adsorbs organic matter in the waste gas, and the desorption tower regenerates the packing. The heating device increases the waste gas temperature to promote the reaction, and the cooling purification device reduces the temperature and removes residual pollutants to achieve waste gas treatment;

[0004] Some diethyl phthalate waste gas treatment devices only perform general spraying treatment. The effect of this treatment method is very ordinary and it is completely unable to effectively remove diethyl phthalate in the gas. In addition, the diethyl phthalate waste gas treatment device will directly lead to a large amount of waste of resources in the process of treating diethyl phthalate, and will also significantly increase the treatment cost and greatly increase the difficulty of treatment. Therefore, a waste gas treatment device for diethyl phthalate production is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a waste gas treatment device for diethyl phthalate production, aiming to improve the problem that some diethyl phthalate waste gas treatment devices in the prior art adopt a general spray treatment method and this treatment method leads to waste of resources, increased treatment costs and increased difficulty.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a waste gas treatment device for diethyl phthalate production, comprising a condensing cylinder, a serpentine tube is fixedly connected to the middle side of the interior of the condensing cylinder, one end of the serpentine tube is fixedly connected to an air inlet pipe, the other end of the serpentine tube is fixedly connected to one end of an air outlet pipe, the other end of the air outlet pipe is fixedly connected to the upper left side of a cooling tank, an air inlet pipe is fixedly connected to the middle side of the upper part of the cooling tank, the right end of the air inlet pipe is fixedly connected to the lower left side of a spray tank, and a spray tank is provided at the rear side. A water pump, wherein the input end of the water pump is fixedly connected to the lower left side of the ethanol tank, the output end of the water pump is fixedly connected to a delivery pipe, a plurality of ring pipes are fixedly connected to the inside of the spray tank at equal intervals, two nozzles are fixedly connected to the middle of the ring pipe at equal intervals, a plurality of nozzles are fixedly connected to the lower part of the nozzle pipe at equal intervals, a short pipe is fixedly connected to the middle side of the rear of the ring pipe, the short pipes penetrate the spray tank and are fixedly connected to the delivery pipe, a plurality of baffles are fixedly connected to the left and right sides of the inside of the spray tank at equal intervals, and an air outlet pipe is fixedly connected to the middle side of the upper part of the spray tank;

[0007] As a further description of the above technical solution: a first liquid outlet pipe is fixedly connected to the middle side of the lower part of the spray tank;

[0008] As a further description of the above technical solution: a second liquid outlet pipe is fixedly connected to the lower front side of the cooling tank;

[0009] As a further description of the above technical solution: a water inlet is fixedly connected to the right side of the lower part of the condensing cylinder, and a water outlet is fixedly connected to the left side of the upper part of the condensing cylinder;

[0010] As a further description of the above technical solution: a first fan and a second fan are respectively arranged on the left sides of the inner sides of the air outlet duct and the air inlet duct;

[0011] As a further description of the above technical solution: three first legs are equidistantly and fixedly connected to the lower part of the spray tank;

[0012] As a further description of the above technical solution: a mounting plate is fixedly connected to the middle of the condensing cylinder, and three second legs are fixedly connected to the lower part of the mounting plate at equal intervals;

[0013] As a further description of the above technical solution: three third legs are equidistantly and fixedly connected to the lower part of the cooling tank.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the exhaust gas enters the spray tank through the air inlet pipe through the structures such as the nozzle and the baffle, and the exhaust gas is driven by the first fan to move upward from the bottom; the baffle and the nozzle are arranged in the spray tank, the baffle can disperse the exhaust gas and increase the spraying time, and the nozzle sprays the exhaust gas with ethanol to dissolve diethyl phthalate in the ethanol, thereby effectively removing diethyl phthalate in the exhaust gas.

[0016] 2. In the utility model, through structures such as the serpentine tube, the diethyl phthalate waste gas enters the serpentine tube through the air inlet pipe, and after being cooled in the condenser, part of the waste gas is liquefied and flows into the cooling tank. The second fan sends the unliquefied waste gas to the spray tank for secondary treatment. The liquid in the cooling tank and the diethyl phthalate and ethanol mixture in the spray tank can be recycled, which solves the problem of waste of resources and costs and reduces the difficulty of treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is an overall structural diagram of a waste gas treatment device for diethyl phthalate production proposed by the utility model;

[0018] Figure 2 This is a rear view of a waste gas treatment device for diethyl phthalate production proposed by the utility model;

[0019] Figure 3 The utility model discloses a front sectional view of a waste gas treatment device for diethyl phthalate production.

[0020] Legend:

[0021] 1. Spray tank; 2. First fan; 3. Air outlet pipe; 4. Ethanol tank; 5. First leg; 6. First liquid outlet pipe; 7. Air inlet pipe; 8. Second fan; 9. Cooling tank; 10. Second liquid outlet pipe; 11. Second leg; 12. Mounting plate; 13. Water inlet; 14. Water outlet; 15. Air inlet pipe; 16. Water pump; 17. Delivery pipe; 18. Third leg; 19. Serpentine pipe; 20. Air outlet pipe; 21. Ring pipe; 22. Spray pipe; 23. Baffle; 24. Spray head; 25. Condenser tube; 26. Short pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Reference Figure 1-Figure 3The utility model provides an embodiment of a waste gas treatment device for diethyl phthalate production: a waste gas treatment device for diethyl phthalate production, comprising a condensing cylinder 25, a serpentine tube 19 is fixedly connected to the middle side of the interior of the condensing cylinder 25, one end of the serpentine tube 19 is fixedly connected to the air inlet pipe 15, the other end of the serpentine tube 19 is fixedly connected to one end of the air outlet pipe 20, the other end of the air outlet pipe 20 is fixedly connected to the upper left side of the cooling tank 9, the upper middle side of the cooling tank 9 is fixedly connected to the air inlet pipe 7, the right end of the air inlet pipe 7 is fixedly connected to the lower left side of the spray tank 1, and a water pump 16 is arranged on the rear side of the spray tank 1. The input end of 16 is fixedly connected to the lower left side of the ethanol tank 4, the output end of the water pump 16 is fixedly connected to the delivery pipe 17, a number of annular pipes 21 are equidistantly fixedly connected inside the spray tank 1, two nozzles 22 are equidistantly fixedly connected to the middle of the annular pipe 21, a number of nozzles 24 are equidistantly fixedly connected to the lower part of the nozzle 22, a short pipe 26 is fixedly connected to the middle side of the rear of the annular pipe 21, the short pipes 26 penetrate the spray tank 1 and are fixedly connected to the delivery pipe 17, a number of baffles 23 are equidistantly fixedly connected to the left and right sides of the inside of the spray tank 1, and a first fan 2 and a second fan 8 are respectively arranged on the left sides of the outlet pipe 3 and the inlet pipe 7.

[0024] By arranging a serpentine tube 19 inside the condensing cylinder 25, an air outlet pipe 20 on the serpentine tube 19 is connected to the upper part of the cooling tank 9, and the diethyl phthalate waste gas enters the serpentine tube 19 through the air inlet pipe 15. After being cooled in the condensing cylinder 25, part of the waste gas is liquefied and flows into the cooling tank 9. An air inlet pipe 7 is fixedly connected to the middle side of the upper part of the cooling tank 9, and a spray tank 1 is connected to the right end of the air inlet pipe 7. A water pump 16 is arranged on the rear side of the spray tank 1. The water pump 16 transports the ethanol in the ethanol tank 4 to the nozzle 22 through a delivery pipe 17. Through a plurality of nozzles 24 of the nozzle 22, a baffle 23 is arranged in the spray tank 1. The baffle 23 can disperse the waste gas and increase the spraying time. The nozzle 23 sprays the waste gas with ethanol to dissolve the diethyl phthalate in the ethanol.

[0025] Working principle: diethyl phthalate waste gas enters the serpentine tube 19 through the air inlet pipe 15, and after being cooled in the condenser 25, part of the waste gas is liquefied and flows into the cooling tank 9. The second fan 8 sends the unliquefied waste gas into the spray tank 1, and the waste gas enters the spray tank 1 through the air inlet pipe 7. The first fan 2 drives the waste gas to move upward from the bottom; a baffle 23 is arranged in the spray tank 1, and the baffle 23 can disperse the waste gas and increase the spraying time. The nozzle 23 sprays the waste gas with ethanol to dissolve diethyl phthalate in the ethanol, thereby effectively removing diethyl phthalate in the waste gas, and then the liquid in the cooling tank 1 and the mixture of diethyl phthalate and ethanol in the spray tank 1 are recycled to solve the problem of waste of resources and costs.

[0026] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A waste gas treatment device for diethyl phthalate production, comprising a condensation cylinder (25), characterized in that: A serpentine tube (19) is fixedly connected to the middle side of the interior of the condensing cylinder (25), one end of the serpentine tube (19) is fixedly connected to the air inlet pipe (15), the other end of the serpentine tube (19) is fixedly connected to one end of the air outlet pipe (20), the other end of the air outlet pipe (20) is fixedly connected to the upper left side of the cooling tank (9), the upper middle side of the cooling tank (9) is fixedly connected to the air inlet pipe (7), the right end of the air inlet pipe (7) is fixedly connected to the lower left side of the spray tank (1), a water pump (16) is arranged on the rear side of the spray tank (1), the input end of the water pump (16) is fixedly connected to the lower left side of the ethanol tank (4), and the water The output end of the pump (16) is fixedly connected to a delivery pipe (17); a plurality of annular pipes (21) are fixedly connected at equal intervals inside the spray tank (1); two nozzles (22) are fixedly connected at equal intervals in the middle of the annular pipe (21); a plurality of nozzles (24) are fixedly connected at equal intervals at the lower part of the nozzle pipe (22); a short pipe (26) is fixedly connected to the middle side of the rear part of the annular pipe (21); the short pipes (26) penetrate the spray tank (1) and are fixedly connected to the delivery pipe (17); a plurality of baffles (23) are fixedly connected to the left and right sides of the spray tank (1); and an air outlet pipe (3) is fixedly connected to the middle side of the upper part of the spray tank (1).

2. The waste gas treatment device for diethyl phthalate production according to claim 1, characterized in that: A first liquid outlet pipe (6) is fixedly connected to the middle side of the lower part of the spray tank (1).

3. The waste gas treatment device for diethyl phthalate production according to claim 1, characterized in that: A second liquid outlet pipe (10) is fixedly connected to the lower front side of the cooling tank (9).

4. The waste gas treatment device for diethyl phthalate production according to claim 1, characterized in that: The lower right side of the condensing cylinder (25) is fixedly connected with a water inlet (13), and the upper left side of the condensing cylinder (25) is fixedly connected with a water outlet (14).

5. The waste gas treatment device for diethyl phthalate production according to claim 1, characterized in that: A first fan (2) and a second fan (8) are respectively arranged on the left sides of the air outlet duct (3) and the air inlet duct (7).

6. The waste gas treatment device for diethyl phthalate production according to claim 1, characterized in that: Three first legs (5) are fixedly connected at equal intervals to the lower part of the spray tank (1).

7. The waste gas treatment device for diethyl phthalate production according to claim 1, characterized in that: A mounting plate (12) is fixedly connected to the middle of the condensing cylinder (25), and three second legs (11) are fixedly connected to the lower part of the mounting plate (12) at equal intervals.

8. The waste gas treatment device for diethyl phthalate production according to claim 1, characterized in that: Three third legs (18) are fixedly connected at equal intervals to the lower part of the cooling tank (9).

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