Cooling and deoiling device for chemical waste gas

Abstract

The utility model belongs to the field of oil removal devices, and particularly relates to a chemical waste gas cooling and oil removal device which comprises a box body, a material guide device is fixedly arranged in the box body, a condensate outlet pipe and a liquid sealing device are fixedly arranged at the bottom of the box body, and a plate type heat exchanger is fixedly arranged in the box body. A low-temperature water inlet pipe and a low-temperature water outlet pipe are fixedly installed on the plate type heat exchanger, a flow splitting device is fixedly installed in the box body, a waste gas inlet pipe is fixedly installed on one side of the box body, a spraying pipe is fixedly installed on the other side of the box body, and a plurality of nozzles are fixedly installed on the spraying pipe. When the device is used, resources are convenient to recycle, zero emission is realized, and meanwhile, the problem that a pipe is blocked by naphthalene crystals after emission is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil removal devices, in particular to a chemical waste gas cooling and oil removal device. Background Art

[0002] The rapid development of the coking industry has a great impact on environmental pollution. With the country's governance of environmental protection, the requirement of zero emission of the coking industry has been put forward. Among the various environmental protection issues of the coking industry, the pollution problem of waste gas from the coking industry is particularly prominent. If it is not governed from the source, it will not only cause serious pollution to the environment, but also block the process pipeline, affect the benefits of the enterprise and have a great impact on production. This technology involves the treatment of waste gas from clarifiers and tar storage tanks in the coking industry. It is a VOCs purification and treatment device, a recycling treatment system for recovering tar and naphthalene oil. The tail gas generated by various storage tanks of coking, especially the ammonia clarification tank, the residual ammonia tank, the tar tank, etc., not only has a strong odor and contains carcinogens, but also carries a large amount of oil substances. If it is not recovered, it will not only cause losses to the benefits of the enterprise, but also pollute the environment. Coking industry waste gas can be divided into inorganic waste gas and organic waste gas according to its chemical properties. Organic waste gas is a general term for organic compounds with volatile properties, mainly including aromatics such as benzene, phenols, naphthalene, anthracene, etc.; these organic waste gases pollute the environment and also harm people and plants. The sources of waste gas from the coking industry are mainly concentrated in the chemical production process, including the emissions from clarifiers, ammonia storage tanks, tar tanks, and the emissions from desulfurization units, ammonium sulfate units, and ammonia distillation units.

[0003] However, there is no effective oil removal equipment on the existing VOCs device, which is not conducive to resource recycling when used. At the same time, it is not easy to solve the problem of naphthalene crystallization blocking the pipe after discharge, so a chemical product waste gas cooling and oil removal device is needed. Utility Model Content

[0004] The purpose of the utility model is to solve the problems of inconvenience in resource recycling during use of the existing waste gas treatment device, failure to achieve zero discharge when discharging liquid, and difficulty in solving the problem of pipe blockage caused by naphthalene crystals after discharge, and to propose a chemical product waste gas cooling and oil removal device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A chemical product waste gas cooling and oil removal device comprises a box body, a material guiding device is fixedly installed in the box body, a condensate outlet pipe is fixedly installed at the bottom of the box body, a plate heat exchanger is fixedly installed in the box body, a low-temperature water inlet pipe and a low-temperature water outlet pipe are fixedly installed on the plate heat exchanger, a flow removal device is fixedly installed in the box body, a waste gas inlet pipe is fixedly installed on one side of the box body, a spray pipe is fixedly installed on the other side of the box body, a plurality of nozzles are fixedly installed on the spray pipe, an automatic temperature control regulator is installed at the connection between the gas outlet and the condensate inlet, a mist collector is fixedly installed on the top inner wall of the box body, and an exhaust device is fixedly installed on the top of the box body; the exhaust device is installed with a valve, the condensate outlet pipe is connected with a liquid sealing pipe and inserted under the liquid level of a clarification tank, and a check valve is provided at the bottom; the oil-containing waste gas outlet is arranged at the venting port of the clarification tank.

[0007] Preferably, the material guiding device comprises two inclined plates, and the two inclined plates are symmetrically fixedly installed in the box body.

[0008] Preferably, the flow-breaking device comprises a flow-breaking plate, and the flow-breaking plate is fixedly installed in the box.

[0009] Preferably, the exhaust device comprises an exhaust chimney and a valve. The exhaust chimney is fixedly mounted on the top of the box body, and the valve is fixedly mounted on the exhaust chimney.

[0010] Preferably, a steam purge pipe is fixedly installed on the exhaust chimney, and a de-oiled waste gas outlet pipe is fixedly installed on the exhaust chimney.

[0011] Preferably, a check valve is installed at the bottom of the liquid sealing tube.

[0012] Beneficial effects of the utility model:

[0013] Due to the setting of the box, inclined plate, condensate outlet pipe, mist collector, exhaust chimney, steam purge pipe, absorption tower inlet pipe, valve, and liquid sealing device, it is convenient to recycle resources, and it is easy to solve the pipe blockage caused by naphthalene crystallization, and zero emission is achieved;

[0014] Due to the installation of plate heat exchanger, low-temperature water outlet pipe, low-temperature water inlet pipe, flow-removing plate, waste gas inlet pipe, spray pipe, nozzle and automatic temperature control regulator, the pollution of waste gas to the environment is reduced, and the recycled products can also increase the benefits of the enterprise.

[0015] The utility model is convenient for resource recycling and has good recycling effect when used; it can solve the problem of naphthalene crystallization blockage in process pipelines, reduce the influence of tar on absorption tower fillers, and the pollution of waste gas to the environment; the recycled products can also increase the benefits of enterprises, and it is a very good environmental protection and energy-saving device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a chemical waste gas cooling and oil removal device proposed by the utility model;

[0017] Figure 2 This is a schematic diagram of a partial structure of a chemical waste gas cooling and oil removal device proposed by the utility model;

[0018] Figure 3 The utility model provides a schematic diagram of the inclined plate stereoscopic structure of a chemical waste gas cooling and oil removal device.

[0019] In the figure: 1. box body; 2. inclined plate; 3. condensate outlet pipe; 4. plate heat exchanger; 5. low-temperature water outlet pipe; 6. low-temperature water inlet pipe; 7. flow-removing plate; 8. exhaust gas inlet pipe; 9. spray pipe; 10. nozzle; 11. automatic temperature control regulator; 12. mist collector; 13. exhaust chimney; 14. steam purge pipe; 15. de-oiled exhaust gas outlet pipe; 16. valve; 17. liquid seal pipe; 18. check valve; 19. oily exhaust gas outlet. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Embodiment 1

[0022] Reference Figure 1-Figure 3 A chemical product waste gas cooling and oil removal device comprises a box body 1, a material guiding device is fixedly installed in the box body 1, a condensate outlet pipe 3 is fixedly installed at the bottom of the box body 1, a plate heat exchanger 4 is fixedly installed in the box body 1, a low-temperature water inlet pipe 6 and a low-temperature water outlet pipe 5 are fixedly installed on the plate heat exchanger 4, a flow dismantling device is fixedly installed in the box body 1, a waste gas inlet pipe 8 is fixedly installed on one side of the box body 1, a spray pipe 9 is fixedly installed on the other side of the box body 1, a plurality of nozzles 10 are fixedly installed on the spray pipe 9, an automatic temperature control regulator 11 is connected and installed between the gas outlet and the condensate inlet, a mist collector 12 is fixedly installed on the top inner wall of the box body 1, and a waste gas dispersing device is fixedly installed on the top of the box body 1.

[0023] In the utility model, the material guiding device comprises two inclined plates 2, and the two inclined plates 2 are symmetrically fixedly installed in the box body 1 to guide the material.

[0024] In the utility model, the flow breaking device comprises a flow breaking plate 7, and the flow breaking plate 7 is fixedly installed in the box body 1, and can break the flow.

[0025] In the utility model, the exhaust device includes an exhaust chimney 13 and a valve 16. The exhaust chimney 13 is fixedly installed on the top of the box body 1, the valve 16 is fixedly installed on the exhaust chimney 13, a steam purge pipe 14 is fixedly installed on the exhaust chimney 13, and an absorption tower inlet pipe 15 is fixedly installed on the exhaust chimney 13, so that the exhaust gas can be discharged.

[0026] In the utility model, the liquid seal pipe 17 is fixedly installed at the bottom of the exhaust gas cooling and oil removal device 1, and is provided with a check valve 18, which is characterized in that it prevents the liquid from flowing back into the cooler when the suction force of the fan is too large, and prevents the liquid from flowing directly through the condensate outlet pipe 3 into the cooler without passing through the oil-containing exhaust gas outlet 19, thereby affecting the exhaust gas oil removal effect.

[0027] In the utility model, the organic waste gas discharged from the clarifier enters the plate condenser at about 70°C and exchanges heat with the low-temperature water of 16-18°C in the condenser jacket. According to the principle of Brownian motion force, the gas temperature is controlled by an automatic regulating device to control the gas temperature within a certain range, so that the water, naphthalene and benzene in the gaseous state are condensed into liquid and attached to the plate wall of the condenser. The accumulated droplets flow down along the plate wall under the action of gravity and flow back to the storage tank through the liquid receiving plate. The purified deoiled waste gas enters the tail gas absorption tower through a pipeline and is washed and discharged.

[0028] Embodiment 2

[0029] The difference between this embodiment and the first embodiment is that the waste gas enters the condensation recovery device from the top side of the condenser, is cooled by the heat exchange plate, passes through the bottom of the partition, and is cooled by the heat exchange plate, and is discharged from the top of the condenser; the condensed water, naphthalene oil, tar and benzene liquids are collected by the liquid receiving pan from the wall of the heat exchange plate and flow back to the storage tank through the liquid seal pipe. The waste gas outlet and the cooling water inlet are equipped with an automatic temperature adjustment control system to control the temperature of the gas in the condenser, so that the naphthalene in the waste gas flows out in liquid before crystallization, and the condensation effect is achieved. The condenser adopts a fully welded plate heat exchanger structure, which is divided into two chambers on the left and right, with a partition in the middle, a spraying device on the top, and a liquid receiving pan at the bottom. The heat exchanger adopts a straight channel, the gas flow rate is smooth and not blocked, the structure is compact, there is no dead angle in heat exchange, and the condensation effect is good; the material is stainless steel, which is corrosion-resistant and does not scale. This process equipment is installed on the waste gas outlet, with light weight, compact structure, simple operation and good recovery effect. Intelligent control: Automatic temperature regulator, automatically adjusts seasonal climate temperature difference, ensures the unit to operate normally and stably when dead, does not run overload, extends the service life of the unit, and achieves higher energy efficiency. Microcomputer intelligent control, automatic switch, automatic cycle cooling, not limited by weather conditions, can operate all year round, no special person on duty. The outlet temperature can be freely set at 10℃~60℃. And you can directly check and query the operating status of the unit, and it will automatically display the fault code to facilitate the search for the cause.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A chemical waste gas cooling and oil removal device, comprising a housing (1), characterized in that: A material guiding device is fixedly installed in the box (1), a condensate outlet pipe (3) is fixedly installed at the bottom of the box (1), a plate heat exchanger (4) is fixedly installed in the box (1), a low-temperature water inlet pipe (6) and a low-temperature water outlet pipe (5) are fixedly installed on the plate heat exchanger (4), a flow removal device is fixedly installed in the box (1), an exhaust gas inlet pipe (8) is fixedly installed on one side of the box (1), and a spray pipe (9) is fixedly installed on the other side of the box (1), and the spray pipe (9) A plurality of nozzles (10) are fixedly mounted on the top, an automatic temperature control regulator (11) is connected and mounted at the gas outlet and the condensate inlet, a mist collector (12) is fixedly mounted on the top inner wall of the box body (1), and an exhaust device is fixedly mounted on the top of the box body (1); a valve (16) is mounted on the exhaust device, a condensate outlet pipe (3) is connected to a liquid sealing pipe (17) and inserted below the liquid level of the clarification tank, and a check valve (18) is arranged at the bottom; and an oily waste gas outlet (19) is arranged at the discharge port of the clarification tank.

2. The device for cooling and deoiling chemical waste gas according to claim 1 is characterized in that: The material guiding device comprises two inclined plates (2), and the two inclined plates (2) are symmetrically fixedly installed in the box body (1).

3. The device for cooling and deoiling chemical waste gas according to claim 1 is characterized in that: The flow-breaking device comprises a flow-breaking plate (7), and the flow-breaking plate (7) is fixedly installed in the box body (1).

4. The device for cooling and deoiling chemical waste gas according to claim 1, characterized in that: The exhaust device comprises an exhaust chimney (13) and a valve (16); the exhaust chimney (13) is fixedly mounted on the top of the box body (1), and the valve (16) is fixedly mounted on the exhaust chimney (13).

5. The device for cooling and deoiling chemical waste gas according to claim 4, characterized in that: A steam purge pipe (14) is fixedly mounted on the exhaust chimney (13), and a de-oiled waste gas outlet pipe (15) is fixedly mounted on the exhaust chimney (13).

6. The device for cooling and removing oil from chemical waste gas according to claim 1, characterized in that: A check valve (18) is installed at the bottom of the liquid sealing tube (17).

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