CN110631034A

CN110631034A - Volatile organic compound heating cracking control device

Info

Publication number: CN110631034A
Application number: CN201910974596.8A
Authority: CN
Inventors: 陈跃雄
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2019-12-31

Abstract

The invention discloses a volatile organic compound heating cracking control device, which comprises a device body, wherein the device body comprises a liquid storage tank, an expansion tank, a chemical system device and a heating oxidation cracking device which are connected by a plurality of groups of pipelines, the expansion tank is connected with a loop of the liquid storage tank, the expansion tank is respectively connected with the chemical system device and a heating oxidation cracking device channel, the heating oxidation cracking device is provided with a hearth, one end of the hearth is provided with a burner interface, the burner interface is connected with a burner, the top of the hearth is provided with a smoke exhaust port, an organic steam inlet and an organic steam outlet, the smoke exhaust port is connected with a smoke exhaust pipe, the smoke exhaust pipe is connected with an air preheater, a chimney and a smoke return pipe, the air preheater is connected with the organic steam inlet, and the smoke return pipe is connected with the burner; the volatile organic compound heating and cracking control device can realize energy conservation and emission reduction, and does not cause secondary pollution to air.

Description

Volatile organic compound heating cracking control device

Technical Field

The invention belongs to the technical field of cracking equipment, and particularly relates to a volatile organic compound heating cracking control device.

Background

Volatile Organic Compounds (VOCs) are important precursors for causing urban dust haze and photochemical smog, mainly come from the processes of coal chemical industry, petrochemical industry, fuel coating manufacturing, solvent manufacturing and using and the like, have uncomfortable special smell, and have toxicity, irritation, teratogenicity and carcinogenic effects, and especially benzene, toluene, formaldehyde and the like cause great harm to human health. With the rapid development of industrialization and urbanization in China and the continuous increase of energy consumption, the regional composite air pollution characterized by PM2.5 sum is increasingly prominent, the frequency of the phenomenon of heavy air pollution in the region is increased in a large range, the sustainable development of social economy is seriously restricted, and the health of people is threatened. There are many types of volatile organic pollutants, and the common classification is based on the nature of the pollution source, and mainly includes the following: organic solution, building material, interior decoration material, fiber material, office supplies, outdoor industrial gas and animal harmless treatment waste steam.

At present, the treatment of volatile waste gas VOCs at home and abroad mainly comprises an active carbon adsorption method, a liquid absorption method, a condensation method, a photocatalytic oxidation method, a biological decomposition method, a plasma purification method and a thermal oxidation method. However, the existing oxidation devices for waste gas concentration systems (RC runners) and thermal storage oxidation furnaces (RTO-RCO) systems in the market for treating volatile waste gas VOCs at home and abroad have certain disadvantages, and cannot effectively treat high-temperature high-humidity waste steam containing ammonia gas, hydrogen sulfide and other low-concentration waste gases. Chemical agents such as 98% high-concentration sulfuric acid and sodium hydroxide are required to be added in the process of treating the volatile waste gases (VOCs) by using a liquid absorption method, the purification rate of the volatile waste gases is only 60% -80%, the consumption of the absorbent is high, the liquid absorbing harmful gases is treated as hazardous waste, otherwise, secondary pollution is caused to the environment, and the treatment cost of the hazardous waste is high.

Disclosure of Invention

The present invention has been made to solve the above problems, and an object of the present invention is to provide a volatile organic compound pyrolysis control apparatus.

The invention realizes the aim through the following technical scheme, and the volatile organic compound heating cracking control device comprises a device body, wherein the device body comprises a liquid storage tank, an expansion tank, a chemical system device and a heating oxidation cracking device which are connected by a plurality of groups of pipelines, the expansion tank is connected with a loop of the liquid storage tank, the expansion tank is respectively connected with the chemical system device and the heating oxidation cracking device, the heating oxidation cracking device is provided with a hearth, one end of the hearth is provided with a burner interface, the burner interface is connected with a burner, the top of the hearth is provided with a smoke exhaust port, an organic steam inlet and an organic steam outlet, the smoke exhaust port is connected with a smoke exhaust pipe, the smoke exhaust pipe is connected with an air preheater, a chimney and a smoke return pipe, the air preheater is connected with the organic steam inlet, the smoke returning pipe is connected with the combustor.

Preferably, the pipeline comprises an injection flow pipe, an overflow pipe, a heat conduction oil return pipe, a power-off automatic cooling pipe, a heat conduction oil supply pipe and an organic steam delivery pipe.

Preferably, a heat conduction oil inlet and a heat conduction oil outlet are formed in the hearth.

Preferably, the air preheater is provided with a driving motor.

Preferably, a hearth outlet smoke temperature detection port, a hearth pressure detection port, a flame observation port and a maintenance hole are formed in one end of the hearth.

Preferably, a nitrogen fire extinguishing port is arranged at one end of the hearth, and the nitrogen fire extinguishing port and the burner are located at the same end of the hearth.

The invention has the beneficial effects that: the heating oxidation cracking equipment extracts part of low-temperature flue gas from the tail part of the device through the arrangement of the smoke return pipe, returns the low-temperature flue gas to the combustor through the smoke return pipe for supporting combustion, and achieves the aims of reducing the combustion temperature, reducing the combination of nitrogen and oxygen in the air and reducing the emission of nitrogen oxides; the heating oxidation cracking equipment is arranged through the air preheater, the air preheater can preheat organic steam to improve the temperature and reduce the energy consumption, and can also provide a part of low-temperature flue gas for the smoke returning pipe, so that the aim of reducing the emission of nitrogen oxides is fulfilled; the heating and cracking control device for adding volatile organic compounds does not need chemical agents such as sulfuric acid, sodium hydroxide, a deodorant and the like in the cracking process, does not generate waste gas and waste water, and does not cause secondary pollution to the environment.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the hearth of the present invention;

FIG. 3 is a top view of the furnace of the present invention;

reference numbers in the figures: 1. a liquid storage tank; 2. a heat conducting oil return pipe; 3. an overflow pipe; 4. a flow injection pipe; 5. an expansion tank; 6. powering off the automatic cooling tube; 7. a heat transfer oil supply pipe; 8. chemical manufacturing equipment; 9. an organic vapor transport pipe; 10. heating oxidative cracking equipment; 11. a burner; 12. a burner interface; 13. a heat conducting oil outlet; 14. an organic vapor outlet; 15. a hearth; 16. an organic vapor inlet; 17. a chimney; 18. a smoke exhaust pipe; 19. an air preheater; 20. a smoke outlet; 21. a heat conducting oil inlet; 22. a drive motor; 23. a smoke returning pipe; 24. a furnace outlet smoke temperature detection port; 25. a hearth pressure detection port; 26. a flame viewing port; 27. a repair hole; 28. and (4) extinguishing the fire hole by nitrogen.

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.

As shown in fig. 1-3, the volatile organic compound pyrolysis control device comprises a device body, the device body comprises a liquid storage tank 1, an expansion tank 5, a chemical system device 8 and a thermal oxidation cracking device 10 which are connected by a plurality of groups of pipelines, wherein the expansion tank 5 is connected with the liquid storage tank 1 in a loop, the expansion tank 5 is respectively connected with the chemical system device 8 and the thermal oxidation cracking device 10 in a channel way, the thermal oxidation cracking device 10 is provided with a hearth 15, one end of the hearth 15 is provided with a burner interface 12, the burner interface 12 is connected with a burner 11, the top of the hearth 15 is provided with a smoke exhaust port 20, an organic steam inlet 16 and an organic steam outlet 14, the smoke exhaust port 20 is connected with a smoke exhaust pipe 18, the smoke exhaust pipe 18 is connected with an air preheater 19, a chimney 17 and a smoke return pipe 23, the air preheater 19 is connected with the organic steam inlet 16, the smoke return pipe 23 is connected to the burner 11.

In addition, the pipeline comprises an injection flow pipe 4, an overflow pipe 3, a heat conduction oil return pipe 2, a power-off automatic cooling pipe 6, a heat conduction oil supply pipe 7 and an organic steam conveying pipe 9; the hearth 15 is provided with a heat conduction oil inlet 21 and a heat conduction oil outlet 13; the air preheater 19 is provided with a driving motor 22; one end of the hearth 15 is provided with a hearth outlet smoke temperature detection port 24, a hearth pressure detection port 25, a flame observation port 26 and a maintenance hole 27; and a nitrogen fire extinguishing port 28 is arranged at one end of the hearth 15, and the nitrogen fire extinguishing port 28 and the burner 11 are positioned at the same end of the hearth 15.

The invention relates to a volatile organic compound heating cracking control device, which is provided with a liquid storage tank 1, an expansion tank 5, a chemical system device 8 and a heating oxidation cracking device 10, wherein in the heating cracking process of the heating oxidation cracking device 10, smoke in a hearth 15 is discharged into a smoke discharge pipe 18 through a smoke discharge port 20, the smoke discharge pipe 18 is provided with an air preheater 19, the air preheater 19 is connected with an organic steam inlet 16, the smoke preheats organic steam through the air preheater 19, the organic steam is preheated to increase the temperature, the energy consumption is reduced, part of the smoke in the smoke discharge pipe 18 is discharged through a chimney 17, and the other part of the smoke returns to a combustor 11 through a smoke return pipe 23 to support combustion, so that the combustion temperature is reduced, the energy consumption is reduced, the combination of nitrogen and oxygen in the air is reduced, and the aim.

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. Volatile organic compounds pyrolysis controlling means, its characterized in that includes a device body, the device body includes liquid storage pot (1), expansion tank (5), system of change equipment (8) and heating oxidation cracking equipment (10) by multiunit pipe connection, wherein, expansion tank (5) with liquid storage pot (1) return circuit connection, expansion tank (5) respectively with system of change equipment (8) and heating oxidation cracking equipment (10) access connection, heating oxidation cracking equipment (10) are equipped with furnace (15), furnace (15) one end is equipped with combustor interface (12), the connection is equipped with combustor (11) on combustor interface (12), furnace (15) top is equipped with exhaust port (20), organic steam air inlet (16) and organic steam gas outlet (14), the connection is equipped with exhaust pipe (18) on exhaust port (20), the smoke exhaust pipe (18) is connected with an air preheater (19), a chimney (17) and a smoke return pipe (23), the air preheater (19) is connected with the organic steam air inlet (16), and the smoke return pipe (23) is connected with the combustor (11).

2. The apparatus for controlling pyrolysis of volatile organic compounds according to claim 1, wherein: the pipeline comprises an injection flow pipe (4), an overflow pipe (3), a heat conduction oil return pipe (2), an automatic power-off cooling pipe (6), a heat conduction oil supply pipe (7) and an organic steam delivery pipe (9).

3. The apparatus for controlling pyrolysis of volatile organic compounds according to claim 1, wherein: and a heat conduction oil inlet (21) and a heat conduction oil outlet (13) are formed in the hearth (15).

4. The apparatus for controlling pyrolysis of volatile organic compounds according to claim 1, wherein: and a driving motor (22) is arranged on the air preheater (19).

5. The apparatus for controlling pyrolysis of volatile organic compounds according to claim 1, wherein: one end of the hearth (15) is provided with a hearth outlet smoke temperature detection port (24), a hearth pressure detection port (25), a flame observation port (26) and a maintenance hole (27).

6. The apparatus for controlling pyrolysis of volatile organic compounds according to claim 1, wherein: furnace (15) one end is equipped with nitrogen gas fire extinguishing port (28), nitrogen gas fire extinguishing port (28) with combustor (11) are in the same one end of furnace (15).