Waste gas and waste liquid treatment device for neopentyl glycol production

Abstract

The utility model belongs to the technical field of waste incineration, and particularly relates to a waste gas and waste liquid treatment device for neopentyl glycol production, which comprises a combustor, a waste gas pipeline connected to the combustor, a first combustion chamber connected to the bottom of the combustor, a waste liquid pipeline connected to the upper part of the first combustion chamber, a gas ejector arranged in the first combustion chamber, and a second combustion chamber connected to the second combustion chamber. The secondary combustion chamber is sequentially connected with a waste heat furnace, an absorber, an induced draft fan and a smoke exhaust tower, a heat exchanger is arranged at the top of the waste heat furnace, and the heat exchanger is connected with a steam collector through a steam pipeline. According to the utility model, waste gas and waste liquid generated in the production process of neopentyl glycol can be incinerated, and finally harmless gas is discharged, so that the pollution to the environment is reduced; the waste gas and the waste liquid are incinerated respectively, the treatment efficiency of the waste gas and the waste liquid can be improved, energy generated in the incineration process can be converted into steam to be reused, and the purpose of energy recycling is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of waste incineration, and particularly relates to a waste gas and waste liquid treatment device for neopentyl glycol production. Background Art

[0002] Neopentyl glycol is an important chemical raw material, which is widely used in multiple fields, including the production of unsaturated resins, oil-free alkyd resins, plasticizers for polyurethane foam plastics and elastomers, etc. However, during the production process of neopentyl glycol, a large amount of waste gas and waste liquid are generated. These waste gas and waste liquid contain more harmful substances. If not properly treated, they will cause environmental pollution. Therefore, the treatment of waste gas and waste liquid generated during the production process of neopentyl glycol is an important production link.

[0003] Waste gas and waste liquid incineration is an effective method for treating waste gas and waste liquid generated during the production process of neopentyl glycol. This method is particularly suitable for treating waste liquid with a high COD value and waste gas with a high VOCs content. These waste gas and waste liquid contain malodorous harmful substances such as trimethylamine. If the combustion is not sufficient, it is easy to cause serious environmental pollution problems. Therefore, how to make the waste liquid and waste gas burn fully through incineration to ensure the safety and environmental protection of the production process has become a key issue in the treatment of waste liquid and waste gas. Content of the Utility Model

[0004] According to the deficiencies in the above prior art, the technical problem to be solved by the utility model is: to provide a waste gas and waste liquid treatment device for neopentyl glycol production, which can effectively treat the waste gas and waste liquid generated during the production process of neopentyl glycol, reduce pollutant emissions, and realize the reuse of energy.

[0005] The technical solution adopted by the utility model to solve its technical problem is:

[0006] The waste gas and waste liquid treatment device for neopentyl glycol production described in the utility model includes a burner. An exhaust gas pipeline is connected to the burner. A first combustion chamber is connected to the bottom of the burner. A waste liquid pipeline is connected to the upper part of the first combustion chamber. A gas injector is arranged inside the first combustion chamber. The first combustion chamber is connected to a second combustion chamber. The second combustion chamber is successively connected to a waste heat boiler, an absorber, a draft fan, and a smoke exhaust tower. A heat exchanger is arranged on the top of the waste heat boiler. The heat exchanger is connected to a steam collector through a steam pipeline.

[0007] Among them:

[0008] A barrier net is arranged between the burner and the first combustion chamber.

[0009] A liquid nozzle is arranged on the upper part of the first combustion chamber. The waste liquid pipeline is connected to the liquid nozzle.

[0010] The described gas injector is arranged below the liquid nozzle, and the gas injector is connected to a gas pipeline.

[0011] The bottom of the first combustion chamber is connected to the bottom of the second combustion chamber through a channel, and the top of the second combustion chamber is connected to the upper part of the waste heat boiler through a channel.

[0012] The described steam pipeline is connected to the top of the heat exchanger, and a desalted water pipeline is arranged at the bottom of the heat exchanger.

[0013] The lower part of the waste heat boiler is connected to the upper part of the absorber through a channel.

[0014] The upper part of the absorber is connected to the side of the induced draft fan through a pipeline.

[0015] The top of the induced draft fan is connected to the lower part of the smoke exhaust tower.

[0016] A smoke exhaust pipeline is arranged at the top of the smoke exhaust tower, and a monitoring port and a sampling port are respectively arranged on the side wall of the smoke exhaust tower.

[0017] The beneficial effects of the present utility model are as follows:

[0018] The present utility model can incinerate the waste gas and waste liquid generated in the production process of neopentyl glycol. By adopting the method of high-temperature incineration, it can quickly decompose the harmful substances in the waste gas and waste liquid, and finally discharge the harmless gas, reducing the pollution to the environment; incinerating the waste gas and waste liquid separately can improve the treatment efficiency of the waste gas and waste liquid, and the harmful gas generated after the waste liquid is incinerated can be incinerated again in the burner, improving the treatment efficiency of the waste liquid. The energy generated during the incineration process can be converted into steam for reuse, achieving the purpose of energy reuse. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present utility model;

[0020] In the figure: 1, burner; 2, first combustion chamber; 3, second combustion chamber; 4, waste gas pipeline; 5, waste liquid pipeline; 6, gas injector; 7, heat exchanger; 8, waste heat boiler; 9, steam collector; 10, absorber; 11, desalted water pipeline; 12, steam pipeline; 13, induced draft fan; 14, smoke exhaust tower; 15, sampling port; 16, monitoring port; 17, smoke exhaust pipeline; 18, barrier net; 19, liquid nozzle; 20, gas pipeline. Detailed Embodiments

[0021] The following further describes the embodiments of the present utility model with reference to the drawings.

[0022] Embodiment 1

[0023] As Figure 1As shown in the figure, the waste gas and waste liquid treatment device for neopentyl glycol production of the present utility model includes a burner 1. An exhaust gas pipeline 4 is connected to the burner 1. A combustion chamber 2 is connected to the bottom of the burner 1. A waste liquid pipeline 5 is connected to the upper part of the combustion chamber 2. A gas injector 6 is arranged inside the combustion chamber 2. The combustion chamber 2 is connected to a secondary combustion chamber 3. The secondary combustion chamber 3 is successively connected to a waste heat boiler 8, an absorber 10, a draft fan 13, and a smoke exhaust tower 14. A heat exchanger 7 is arranged on the top of the waste heat boiler 8. The heat exchanger 7 is connected to a steam collector 9 through a steam pipeline 12.

[0024] The exhaust gas pipeline 4 can transport the exhaust gas to the burner 1 for incineration. The waste liquid pipeline 5 can transport the waste liquid to the liquid nozzle 19 and evenly spray it into the combustion chamber 2 through the liquid nozzle 19. The gas injector 6 incinerates the sprayed waste liquid.

[0025] A barrier net 18 is arranged between the burner 1 and the combustion chamber 2. The barrier net 18 can block the soot generated during the incineration of the waste liquid, allowing the remaining gas to enter the burner 1 for incineration again.

[0026] A liquid nozzle 19 is arranged at the upper part of the combustion chamber 2. The waste liquid pipeline 5 is connected to the liquid nozzle 19.

[0027] The gas injector 6 is arranged below the liquid nozzle 19. The gas injector 6 is connected to a gas pipeline 20.

[0028] The bottom of the combustion chamber 2 is connected to the bottom of the secondary combustion chamber 3 through a channel. The top of the secondary combustion chamber 3 is connected to the upper part of the waste heat boiler 8 through a channel.

[0029] The steam pipeline 12 is connected to the top of the heat exchanger 7. A desalted water pipeline 11 is arranged at the bottom of the heat exchanger 7. Desalted water enters the heat exchanger 7 from the desalted water pipeline 11 and then is discharged from the top of the heat exchanger 7 in the form of steam to the steam collector 9 for recycling.

[0030] The lower part of the waste heat boiler 8 is connected to the upper part of the absorber 10 through a channel. An absorbent liquid is placed in the absorber 10 to absorb some of the incompletely incinerated gas.

[0031] The upper part of the absorber 10 is connected to the side of the draft fan 13 through a pipeline.

[0032] The top of the draft fan 13 is connected to the lower part of the smoke exhaust tower 14. The draft fan 13 can transport air into the combustion chamber 2 and the secondary combustion chamber 3 to promote the combustion of the exhaust gas and waste liquid, and lead the remaining gas to the smoke exhaust tower 14 for discharge after the incineration is completed.

[0033] A smoke exhaust pipe 17 is provided at the top of the smoke exhaust tower 14, and a monitoring port 16 and a sampling port 15 are respectively provided on the side wall of the smoke exhaust tower 14. The gas state in the smoke exhaust tower 14 can be monitored through the monitoring port 16, and sampling detection is carried out through the sampling port 15. After the incinerated gas meets the emission standards, it is discharged from the smoke exhaust pipe 17.

[0034] Working principle and process:

[0035] When treating waste gas and waste liquid, the waste gas is transported to the burner 1 through the waste gas pipe 4 for incineration, and the waste liquid is transported to the liquid nozzle 19 through the waste liquid pipe 5 and evenly sprayed into the primary combustion chamber 2 through the liquid nozzle 19. The gas injector 6 below the liquid nozzle 19 incinerates the sprayed waste liquid. Smoke and dust waste gas will be generated during incineration. After passing through the barrier net 18, the smoke and dust are intercepted, and the remaining gas continues to be incinerated through the burner 1. The temperature in the primary combustion chamber 2 and the secondary combustion chamber 3 is maintained at about 1100 °C. The initially incinerated mixed flue gas stays in the primary combustion chamber 2 and the secondary combustion chamber 3 for more than 2 seconds for incineration. The induced draft fan 13 supplies air to the primary combustion chamber 2 and the secondary combustion chamber 3 according to the oxygen content in the mixed flue gas to promote incineration. The waste heat of the flue gas enters the waste heat boiler 8, and the heat is absorbed by the demineralized water in the heat exchanger 7. The demineralized water is converted into steam and transported to the steam collector 9 to form saturated steam of 2.2 MPa for reuse. The induced draft fan 13 introduces the incinerated gas into the absorber 10. Part of the unincinerated waste gas is absorbed by the absorbent liquid in the absorber 10. The remaining gas enters the smoke exhaust tower 14 through the induced draft fan 13. The state of the gas in the smoke exhaust tower 14 is monitored through the monitoring port 16, and then the gas is sampled and detected through the sampling port 15. After the gas meets the emission standards, it is discharged from the smoke exhaust pipe 17.

Claims

1. A device for treating waste gas and waste liquid for neopentyl glycol production, comprising a burner (1), characterized in that: The burner (1) is connected to an exhaust gas pipeline (4), the bottom of the burner (1) is connected to a combustion chamber (2), the upper part of the combustion chamber (2) is connected to a waste liquid pipeline (5), a fuel gas injector (6) is arranged inside the combustion chamber (2), the combustion chamber (2) is connected to a second combustion chamber (3), the second combustion chamber (3) is connected in sequence to a waste heat furnace (8), an absorber (10), an induced draft fan (13) and a smoke exhaust tower (14), a heat exchanger (7) is arranged on the top of the waste heat furnace (8), and the heat exchanger (7) is connected to a steam collector (9) via a steam pipeline (12).

2. The waste gas and waste liquid treatment device for neopentyl glycol production according to claim 1, characterized in that: A barrier net (18) is provided between the burner (1) and a combustion chamber (2).

3. The waste gas and waste liquid treatment device for neopentyl glycol production according to claim 1, characterized in that: A liquid nozzle (19) is provided at the upper portion of a combustion chamber (2), and a waste liquid pipeline (5) is connected to the liquid nozzle (19).

4. The waste gas and waste liquid treatment device for neopentyl glycol production according to claim 1, characterized in that: The gas injector (6) is arranged below the liquid nozzle (19), and the gas injector (6) is connected to a gas pipeline (20).

5. The waste gas and waste liquid treatment device for neopentyl glycol production according to claim 1, characterized in that: The bottom of the first combustion chamber (2) is connected to the bottom of the second combustion chamber (3) through a channel, and the top of the second combustion chamber (3) is connected to the upper part of the waste heat furnace (8) through a channel.

6. The device for treating waste gas and waste liquid for neopentyl glycol production according to claim 1, characterized in that: The steam pipeline (12) is connected to the top of the heat exchanger (7), and a desalted water pipeline (11) is provided at the bottom of the heat exchanger (7).

7. The device for treating waste gas and waste liquid for neopentyl glycol production according to claim 1, characterized in that: The lower part of the waste heat furnace (8) is connected to the upper part of the absorber (10) through a channel.

8. The device for treating waste gas and waste liquid for neopentyl glycol production according to claim 1, characterized in that: The upper portion of the absorber (10) is connected to the side portion of the induced draft fan (13) via a pipeline.

9. The device for treating waste gas and waste liquid for neopentyl glycol production according to claim 1, characterized in that: The top of the induced draft fan (13) is connected to the bottom of the smoke exhaust tower (14).

10. The device for treating waste gas and waste liquid for neopentyl glycol production according to claim 1, characterized in that: A smoke exhaust pipe (17) is arranged on the top of the smoke exhaust tower (14), and a monitoring port (16) and a sampling port (15) are respectively arranged on the side walls of the smoke exhaust tower (14).

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