CN211921423U - Industrial hazardous waste tar residue treatment system - Google Patents

Abstract

The application discloses an industrial hazardous waste tar residue treatment system, which comprises a feeding mechanism, a pyrolysis device, an oil-gas recombination catalytic device and a combustion waste gas environment-friendly treatment device, wherein the feeding mechanism comprises a storage bin for temporarily storing tar residues; the pyrolysis device comprises a feed inlet communicated with the bin, a discharge outlet for discharging solid carbon materials, a fluctuation pyrolysis bed communicated with the feed inlet and the discharge outlet, a combustion chamber for heating the fluctuation pyrolysis bed, a heat exchange furnace chamber, an oil gas channel positioned above the fluctuation pyrolysis bed and communicated with the fluctuation pyrolysis bed, and a conveying device for conveying tar residues along the fluctuation pyrolysis bed; the oil-gas recombination catalytic device is communicated with an outlet of the oil-gas channel, the oil-gas recombination catalytic device is communicated to the oil storage tank, and the oil storage tank is provided with a gas outlet and a gas outlet which are communicated with the combustion chamber; the air inlet of the combustion waste gas environment-friendly treatment device is communicated with the air outlet of the heat exchange furnace chamber. By the arrangement, the problems that the existing treatment method for the tar residue in the coking industry pollutes the environment and causes resource waste are solved.

Description

Industrial hazardous waste tar residue treatment system

Technical Field

The application relates to the technical field of tar residue treatment, in particular to an industrial hazardous waste tar residue treatment system.

Background

In the coking industry, a large amount of tar residues are generated in the production process. The tar residue comprises the following main components: coke powder, coal powder, crystalline high-boiling point polymer (the main component is benzopyrene) and inorganic substances. In the prior art, most of the tar residues in the coking industry in China are generally used as coking and fuel by asphalt purchasing and paving or are mixed with coal after being sold at a low price, and the treatment method not only seriously pollutes the environment, but also wastes resources. In recent years, with the increase of national environmental protection and the enhancement of national environmental protection consciousness, tar residues are listed in a dangerous waste list, and the reasonable, scientific and environmental protection disposal of the tar residues becomes a big problem.

Therefore, how to solve the problem that the existing treatment method for tar residue (strong carcinogen "benzopyrene" in tar residue) in the coking industry pollutes the environment and causes resource waste becomes an important technical problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

In order to overcome the problems in the related art at least to a certain extent, the application aims to provide an industrial hazardous waste tar residue treatment system, which can solve the problems that the treatment method of tar residue (strong carcinogen 'benzopyrene' in the tar residue) in the existing coking industry pollutes the environment and causes resource waste.

The utility model provides a useless tar sediment processing system of industry danger, including:

the feeding mechanism comprises a storage bin for storing tar residues;

the pyrolysis device is used for pyrolyzing the tar residues and comprises a feed inlet communicated with the bin, a discharge outlet for discharging solid carbon materials, a fluctuation pyrolysis bed communicated with the feed inlet and the discharge outlet, a combustion chamber used for heating the fluctuation pyrolysis bed, a heat exchange furnace chamber communicated with the combustion chamber, an oil gas channel positioned above the fluctuation pyrolysis bed and communicated with the fluctuation pyrolysis bed, and a conveying device used for conveying the tar residues along the fluctuation pyrolysis bed;

the oil-gas recombination catalytic device is communicated with an outlet of the oil-gas channel and communicated to an oil storage tank, and an air outlet is formed in the oil storage tank and communicated with the combustion chamber;

and the combustion waste gas environment-friendly treatment device is used for treating waste gas generated in the combustion chamber, and an air inlet of the combustion waste gas environment-friendly treatment device is communicated with an air outlet of the heat exchange furnace chamber.

Preferably, the conveying device comprises a shaftless blade positioned in the fluctuating pyrolysis bed and a first motor for driving the shaftless blade to rotate, and the shaftless blade and the fluctuating pyrolysis bed are coaxially arranged and have the same length.

Preferably, feeding mechanism is still including being located screw rod in the feed bin and being used for the drive the rotatory second motor of screw rod, second motor fixed mounting be in the top of feed bin, the screw rod with the coaxial setting of discharge gate of feed bin, just the bottom of screw rod is located the discharge gate department of feed bin.

Preferably, the bin is further provided with a nitrogen inlet communicated with the nitrogen storage tank and an exhaust port used for exhausting gas in the bin, and the exhaust port is externally connected with a vacuum pump.

Preferably, the oil gas recombination catalytic device comprises a catalytic device for gas-solid separation, carbon molecule recombination and catalysis of oil gas and a condenser for liquefying the oil gas, the condenser is communicated with an outlet of the catalytic device, the catalytic device is communicated with an outlet of the oil gas channel, and the condenser is communicated to the oil storage tank.

Preferably, the catalytic device comprises a gas-solid separation heterogeneous reforming tower for gas-solid separation of oil gas and a catalytic tower communicated with a gas outlet of the gas-solid separation heterogeneous reforming tower, the gas-solid separation heterogeneous reforming tower is communicated with an outlet of the oil gas channel, the gas-solid separation heterogeneous reforming tower is provided with an oil outlet, the oil outlet is connected with an oil storage tank, an outlet of the catalytic tower is communicated with the condenser, and an adsorption pour point depression catalyst is arranged in the catalytic tower.

Preferably, the environment-friendly combustion waste gas treatment device comprises a washing tower, a cooling pool containing weak alkali cooling water and a UV light oxygen treatment device, wherein an air inlet of the washing tower is communicated with an outlet of the heat exchange furnace chamber, a spraying device communicated with the cooling pool is arranged in the washing tower, the spraying device is positioned between an air outlet and an air inlet of the washing tower, an air inlet of the UV light oxygen treatment device is communicated with an air outlet of the washing tower, an ultraviolet lamp tube and a glass tube with nano titanium dioxide sprayed on the surface are arranged in the UV light oxygen treatment device, and an air outlet of the UV light oxygen treatment device is communicated to an exhaust funnel.

Preferably, still be provided with the draught fan between the gas outlet of scrubbing tower and UV light oxygen processing apparatus's the air inlet, the air intake orientation of draught fan the scrubbing tower, the air outlet orientation of draught fan UV light oxygen processing apparatus.

Preferably, discharge gate department is connected with the cooling and faces the warehouse, the cooling faces the warehouse including inner shell and cover the outer shell of inner shell, the inner shell with leave the cooling water passageway between the shell, be provided with on the shell with cooling water inlet and the cooling water export that the cooling water passageway is linked together, the cooling water inlet is close to the discharge gate setting that the warehouse was faced in the cooling, the cooling water export is close to the feed inlet setting that the warehouse was faced in the cooling.

Preferably, the discharge hole of the cooling temporary storage bin is connected with a bin pump, and the bin pump is provided with an air inlet for nitrogen to enter, an air outlet for gas in the bin pump to discharge and a discharge pipeline.

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

the application provides an industrial hazardous waste tar residue processing system, including feeding mechanism, the pyrolysis device, oil gas recombination catalytic unit and burning waste gas environmental protection processing apparatus, feeding mechanism sends the tar residue in the feed bin into the undulant pyrolysis bed of pyrolysis device, combustion chamber and heat exchange furnace chamber heat undulant pyrolysis bed, make the pyrolysis of tar residue in the undulant pyrolysis bed generate oil gas (containing gaseous benzopyrene) and solid carbon material, the oil gas discharges into oil gas recombination catalytic unit through the oil gas passageway, solid carbon material discharges through the discharge gate, the waste gas that the burning produced enters into burning waste gas environmental protection processing apparatus and discharges up to standard after burning waste gas environmental protection processing apparatus handles, oil gas realizes the oil-gas separation in oil gas recombination catalytic unit, the oil of separation department gets into the oil storage tank to store, combustible gas (including benzopyrene) gets into the combustion chamber and burns and provides heat energy for the pyrolysis device, Realize the combustible gas and use oneself, from this industry danger is useless the waste tar sediment processing system, can accomplish the tar sediment and deal with, obtain mineral oil, solid-state carbon sediment, combustible gas (use oneself), do not have any emission except that burning waste gas discharge up to standard, accomplish little emission and zero pollution. By the arrangement, the problems that the existing treatment method for the tar residue in the coking industry pollutes the environment and causes resource waste are solved. Particularly, the specific physical and chemical characteristics of benzopyrene C20H12 are utilized to convert the benzopyrene into the carbon-hydrogen combustible gas, so that the carbon-hydrogen combustible gas is scientifically treated and changed into valuable.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.

Fig. 1 is a schematic structural diagram illustrating the industrial hazardous waste tar residue treatment system according to an exemplary embodiment.

In the figure:

1. a storage bin; 2. a second motor; 3. a screw; 4. an oxygen-containing monitor; 5. a nitrogen inlet; 6. an exhaust port; 7. a feed inlet; 8. a first motor; 9. a shaftless blade; 10. a fluctuating pyrolysis bed; 11. an oil gas passage; 12. a heat exchange furnace chamber; 13. a combustion chamber; 14. a discharge port; 15. a cooling water inlet; 16. a cooling water passage; 17. a cooling water outlet; 18. a bin pump; 19. an air inlet; 20. a gas-solid separation heterogeneous reforming tower; 21. a catalytic tower; 22. a condenser; 23. an oil storage tank; 24. a water resistor; 25. a gas-water separator; 26. a cooling pool; 27. a washing tower; 28. a spraying device; 29. an induced draft fan; 30. a UV photo-oxygen treatment device; 31. a compressed air tank; 32. an air compressor; 33. a nitrogen making machine; 34. a nitrogen tank; 35. a feed channel; 36. a hot air channel; 37. an exhaust funnel.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

Referring to the attached drawing 1, the specific embodiment provides an industrial hazardous waste tar residue treatment system, which comprises a feeding mechanism, a pyrolysis device, an oil-gas recombination catalytic device and a combustion waste gas environment-friendly treatment device, wherein the feeding mechanism sends tar residue into the pyrolysis device, so that the tar residue is pyrolyzed in a fluctuation pyrolysis device to generate oil gas, crystalline benzopyrene gasification and solid carbon residue, the oil gas is cooled and liquefied after gas-solid separation, heterogeneous recombination and catalysis of the oil-gas recombination catalytic device, and liquid mineral oil is obtained and enters an oil storage tank 23. The residual combustible gas (namely non-condensable gas containing gasified benzopyrene) is used as a heat source to enter a combustion chamber of the pyrolysis device, and waste gas generated after combustion enters a combustion waste gas environment-friendly treatment device to be treated and then is discharged after reaching the standard. The whole process of tar residue disposal is completed, particularly benzopyrene is disposed scientifically, and no emission is generated except that the combustion waste gas is discharged after reaching the standard, so that micro-emission and zero pollution are realized.

Wherein, the feeding mechanism comprises a bin 1, the bin 1 is filled with tar residue to be treated, the pyrolysis device comprises a feed inlet 7, a discharge outlet 14, a fluctuation pyrolysis bed 10, a combustion chamber 13 for heating the fluctuation pyrolysis bed 10, a heat exchange furnace chamber 12 communicated with the combustion chamber 13, an oil gas channel 11 communicated with the fluctuation pyrolysis bed 10 and a conveying device, the feed inlet 7 is communicated with the bin 1, the fluctuation pyrolysis bed 10 is communicated with the feed inlet 7 and the discharge outlet 14, the tar residue enters the fluctuation pyrolysis bed 10 from the bin 1 through the feed inlet 7, the combustion chamber 13 and the heat exchange furnace chamber 12 heat the fluctuation pyrolysis bed 10 to ensure that the tar residue in the fluctuation pyrolysis bed 10 is pyrolyzed, mineral oil and crystalline benzopyrene in the tar residue are gasified by heating and are separated from inorganic matter gas and solid in the tar residue to generate oil gas and solid carbon, the conveying device conveys the solid carbon in the fluctuation pyrolysis bed 10 to the discharge outlet 14, causing the solid carbon to be discharged from the discharge port 14.

It should be noted that the oil gas channel 11 is located above the wave pyrolysis bed 10 so as to facilitate the oil gas discharge, and the oil gas channel 11 is not blocked by the solid carbon or tar residue.

The oil gas channel 11 is communicated with the oil gas recombination catalytic device through a pipeline, the condensable oil gas is cooled and liquefied through heat exchange, the generated liquid oil enters the oil storage tank 23, an air outlet is formed in the upper portion of the oil storage tank 23 and is communicated with a water resistor 24 and an air-water separator 25, the gas outlet is communicated with a combustor of the combustion chamber 13 through a pipeline, and the non-condensable gas (containing benzopyrene) provides fuel for the non-condensable gas, so that the combustible gas is used by oneself, and resource and cost saving is facilitated.

The outlet of the heat exchange furnace chamber 12 is communicated with the air inlet of the washing tower 27 of the combustion waste gas environment-friendly treatment device, the high-temperature constant-temperature gas generated by the combustion chamber 13 passes through the heat exchange furnace chamber 12 to carry out standard emission after the waste gas heated by the fluctuation pyrolysis bed is subjected to serial environment-friendly treatment, and micro-emission and zero pollution are realized.

Generating renewable commodity resources and non-condensable gas used as self-used pyrolysis energy of the system after pyrolysis of the tar residues, wherein the renewable commodity resources comprise liquid mineral oil (the mineral oil accounts for 16-18% of the total amount of the tar residues) and solid coke, coal powder, inorganic matters and the like (the mineral oil accounts for 70% of the total amount); the gaseous non-condensable gas accounts for about 8-10% of the total amount, and the non-condensable gas mainly comprises combustible gas (mainly methane component) and benzopyrene (the molecular formula is C20H12 is combustible at high temperature, and water H2O and carbon dioxide CO2 are generated by combustion).

By the arrangement, the problems that the existing treatment method for the tar residue in the coking industry pollutes the environment and causes resource waste are solved.

In this embodiment, the wave pyrolysis bed is composed of a special seamless thick-walled steel tube with high temperature resistance, corrosion resistance and wear resistance. The conveying device can be a shaftless blade fluctuation conveying device, the conveying device comprises a shaftless blade 9 positioned in a fluctuation pyrolysis bed 10 and a first motor 8 arranged at the outer end of the fluctuation pyrolysis bed 10, and the first motor 8 is used for driving the shaftless blade 9 to rotate so as to convey tar residue or solid carbon residue in the fluctuation pyrolysis bed 10 along the fluctuation pyrolysis bed 10 through the rotation of the shaftless blade 9.

A speed reducer and a speed reducer are further arranged between the first motor 8 and the shaftless blade 9 and connected with the shaftless blade 9 through a short shaft.

Furthermore, the shaftless blade 9 and the fluctuation pyrolysis bed 10 are coaxially arranged, and the length of the shaftless blade 9 is the same as that of the fluctuation pyrolysis bed 10, so that tar slag or solid carbon slag in the fluctuation pyrolysis bed 10 can move along the fluctuation pyrolysis bed 10 along the shaftless blade 9, and pyrolysis is completed in the moving process; meanwhile, as the blades rotate ceaselessly, the mechanical decoking effect is achieved in the fluctuation pyrolysis bed 10, the problem that the colloid asphaltene in the tar residue is coked on the inner wall of the pyrolysis device to influence the heat exchange effect is effectively avoided, and the solid carbon residue after pyrolysis is conveyed to the discharge hole 14.

The shaftless blade 9 is matched with the fluctuation pyrolysis bed 10, that is, the diameter of the shaftless blade 9 is the same as the inner diameter of the fluctuation pyrolysis bed 10, so that the blade can completely drive the tar residue or the solid carbon residue in the fluctuation pyrolysis bed 10 to move, thereby avoiding the adhesion of colloid and asphaltene in the tar residue on the inner wall of the fluctuation pyrolysis bed 10 (called as 'coking') and influencing the heat exchange efficiency.

In some embodiments, the pyrolysis device comprises a first pyrolysis bed and a second pyrolysis bed, the first pyrolysis bed and the second pyrolysis bed are provided with a fluctuation pyrolysis bed 10, a feed inlet 7, a discharge outlet 14, an oil gas channel 11 and a conveying device, and the discharge outlet of the first pyrolysis bed is communicated with the feed inlet of the second pyrolysis bed through a feed channel 35, so that tar residues in the fluctuation pyrolysis bed 10 of the first pyrolysis bed can enter the fluctuation pyrolysis bed 10 of the second pyrolysis bed, solid carbon residues generated after cracking are discharged from the discharge outlet of the second pyrolysis bed, and the first pyrolysis bed and the second pyrolysis bed are arranged side by side and combined up and down, so that more tar residues can be treated, the treatment efficiency of the tar residues is improved, and the floor space of the pyrolysis device is not increased.

It should be noted that the oil gas channels 11 of the first pyrolysis bed and the second pyrolysis bed are both communicated to the oil gas recombination catalytic device.

The combustion chamber 13 is arranged close to the discharge hole of the second pyrolysis bed, the first pyrolysis bed and the second pyrolysis bed are both provided with heat exchange furnace chambers 12, the two heat exchange furnace chambers 12 are communicated through a hot air channel 36, the air outlet of the heat exchange furnace chamber 12 on the first pyrolysis bed is communicated with the combustion waste gas environment-friendly treatment device, the air inlet of the heat exchange furnace chamber 12 of the second pyrolysis bed is communicated with the combustion chamber 13, the air outlet of the heat exchange furnace chamber 12 of the second pyrolysis bed is communicated with the air inlet of the heat exchange furnace chamber 12 of the first pyrolysis bed through the hot air channel 36, in this way, the exhaust gas generated by the combustion chamber 13 can enter the heat exchange chamber 12 of the first pyrolysis bed through the heat exchange chamber 12 of the second pyrolysis bed, and the heat generated by the combustion is taken into the heat exchange chamber 12, thereby heating the fluctuation pyrolysis bed 10 and leading the tar residue in the fluctuation pyrolysis bed 10 to be pyrolyzed to generate oil gas and solid carbon residue. Thus, the first pyrolysis bed and the second pyrolysis bed share one combustion chamber 13, which is beneficial to simplifying the structure of the pyrolysis device.

And, be provided with the combustor in the combustion chamber 13, be used for adjusting the temperature controller of combustor air input, the temperature controller is connected with the combustor electricity, and after the temperature that the temperature controller detected exceeded preset temperature range, the combustible gas inlet valve of temperature controller control combustor closed, makes the combustible gas can not enter into combustion chamber 13 in, makes the flame in combustion chamber 13 reduce or even extinguish, and when the temperature that the temperature controller detected was less than or was in preset temperature range, the combustible gas inlet valve of combustor opened, makes the combustible gas get into in combustion chamber 13, and the burning provides the heat for undulant pyrolysis bed 10.

The first pyrolysis bed and the second pyrolysis bed respectively comprise a shell and a heat insulation layer, the heat insulation layer is sleeved outside the heat exchange furnace chamber 12, the shell is sleeved outside the heat insulation layer, the shell is composed of a stainless steel decoration panel, and the heat insulation layer is formed by stacking three layers of heat insulation pouring materials, fire-resistant pouring materials and sodium silicate fiber boards so as to prevent heat in the heat exchange furnace chamber 12 from being dissipated.

Wherein, the first motor 8 of the conveying device is arranged on the shell, and the driving shaft of the first motor 8 penetrates through the shell and extends into the wave pyrolysis bed 10 to be connected with the shaftless blade 9 through a short shaft.

And the conveying directions of the conveying devices arranged on the first pyrolysis bed and the second pyrolysis bed are opposite, and the first motor 8 is arranged close to the feeding hole 7 of the fluctuation pyrolysis bed 10, so that the conveying of the tar residues or the solid carbon residues is realized.

In this embodiment, pyrolysis device's discharge gate 14 is connected with the cooling and faces the warehouse, the cooling faces the warehouse including inner shell and shell, the shell cover is outside the inner shell, and be provided with cooling water passageway 16 between shell and the inner shell, be provided with cooling water inlet 15 and cooling water outlet 17 on the shell, cooling water inlet 15 and cooling water outlet 17 all are linked together with cooling water passageway 16, and cooling water inlet 15 is close to the discharge gate setting that the warehouse was faced in the cooling, cooling water outlet 17 is close to the feed inlet setting that the warehouse was faced in the cooling, so that face the solid-state carbon sediment cooling in the warehouse to getting into the cooling.

It should be noted that, the cooling water channel 16 is a gap between the outer shell and the inner shell, and the cooling water channel 16 surrounds the outer shell, that is, after the cooling water enters the cooling water channel 16 from the cooling water inlet 15, the cooling water can be discharged from the cooling water outlet 17 after the cooling water channel 16 is filled, so as to integrally cool the cooling temporary storage bin, thereby improving the cooling efficiency.

In order to discharge the solid carbon slag conveniently, a bin pump 18 is connected to a discharge hole of the cooling temporary storage bin, a gas inlet 19 for nitrogen to enter, a gas outlet for gas in the bin pump 18 to discharge and a discharge pipeline for solid carbon slag to discharge are formed in the bin pump 18, combustible gas possibly exists in the pipeline and the cooling temporary storage bin, and nitrogen is input into the bin pump 18 to be used as power, so that the solid carbon slag is conveniently conveyed out, and the safety is improved.

Here, the bin pump 18 is provided with three air inlets 19 for nitrogen to enter, which are respectively arranged at the position close to the inlet of the bin pump 18, the middle part of the bin pump 18 and the outlet of the bin pump 18, so that the airflow force for conveying the solid carbon slag is uniform, and the solid carbon slag is more convenient to output.

The air inlet 19 on the bin pump 18 is connected with a nitrogen supply device, the nitrogen supply device comprises a compressed air tank 31, an air compressor 32, a nitrogen making machine 33 and a nitrogen tank 34 which are sequentially connected, and the nitrogen tank 34 is connected with the air inlet 19 of the bin pump 18 to provide nitrogen for the bin pump 18. The nitrogen making device takes air as a raw material, and under a certain pressure condition, oxygen and nitrogen are separated by utilizing different permeation rates of gases with different properties, such as oxygen, nitrogen and the like in a membrane. The gas generator has the advantages of simpler structure, smaller volume, no switching valve, less maintenance amount, faster gas generation, convenient capacity increase and the like.

In this embodiment, feeding mechanism is still including screw rod 3 and the second motor 2 that is used for driving screw rod 3 to rotate, and screw rod 3 is located feed bin 1, and 2 fixed mounting of second motor are on the top of feed bin 1, and screw rod 3 sets up with the discharge gate is coaxial of feed bin 1 to the bottom of screw rod 3 is located the discharge gate department of feed bin 1, and like this, screw rod 3 can carry feed bin discharge gate department with the tar sediment in the feed bin 1, so that the tar sediment enters into the pyrolysis device from the feed bin discharge gate in.

Wherein, screw rod 3 passes through the connecting axle and installs in the drive shaft of second motor 2, and, feed bin 1 is including the first portion that is used for splendid attire tar sediment and the second portion that is located the first portion below, the second portion is leaks hopper-shaped, feed bin 1's discharge gate is located the bottom of second portion, screw rod 3 is located the second portion, and the diameter of the blade on the screw rod 3 reduces to the bottom along the top of second portion gradually, and with the second portion phase-match, so that with the discharge gate of tar sediment direction feed bin 1, make the discharge gate of feed bin 1 discharge from the tar sediment more easily.

In order to prevent oxygen-containing air from entering the pyrolysis device to cause unsafe hidden dangers, a nitrogen inlet 5 and an exhaust port 6 are arranged on the bin 1, the nitrogen inlet 5 is communicated with a nitrogen storage tank, a vacuum pump is connected outside the exhaust port 6, nitrogen is filled into the bin 1, air in the bin 1 is pumped out by the vacuum pump, replacement of nitrogen and oxygen is achieved, oxygen-free operation is achieved in the bin 1, oxygen cannot be brought into the pyrolysis device when tar residues are discharged into the pyrolysis device, and the unsafe hidden dangers are eliminated.

And, feed bin 1 still is provided with the feed inlet that supplies the tar sediment to get into, feed inlet department is provided with feed valve at 1 feed bin, discharge gate department at feed bin 1 is provided with discharge valve, still be provided with oxygen monitor 4 in feed bin 1, oxygen monitor 4 is communicably connected with discharge valve, when the oxygen value that oxygen monitor 4 detected is less than the default, discharge valve opens, make the discharge gate of feed bin 1 open, make the tar sediment in the feed bin 1 discharge into the pyrolysis device in, thereby avoid oxygen to enter into the pyrolysis device in and influence the schizolysis of tar sediment.

The nitrogen inlet 5 on the storage bin 1 is communicated with the air outlet of the bin pump 18, and an additional nitrogen device is not required to be added, so that the structure is simplified.

In this embodiment, the oil-gas recombination catalytic device includes a catalytic device and a condenser 22, the catalytic device is used for catalyzing, purifying and recombining oil gas, the catalytic device is communicated with the oil-gas channel 11, the condenser 22 is communicated with an outlet of the catalytic device, the condenser 22 is communicated with the oil storage tank 23, namely, the oil gas enters the catalytic device from the oil-gas channel 11, through the catalytic purification and recombination of the catalytic device, non-condensable gas and mineral oil (the mineral oil is in a gaseous state) are generated, and then enter the condenser 22 from the catalytic device, the mineral oil is liquefied through the cooling effect of the condenser 22 and flows into the oil storage tank 23, and the non-condensable gas (combustible gas) enters the combustion chamber 13 from the oil storage tank 23, so that the separation of the oil gas is realized, and the mineral oil and the non-condensable gas (containing benzopyrene) are obtained.

The catalytic device comprises a gas-solid separation heterogeneous reforming tower 20 and a catalytic tower 21, wherein the gas-solid separation heterogeneous reforming tower 20 can enable oil gas entering the catalytic tower 21 to be cracked and reformed, conduct heterogeneous reaction and gas-solid separation, most of hydrocarbon atoms are recombined into a required molecular structure, a catalyst is arranged in the catalytic tower 21, so that oil gas components entering the catalytic tower 21 further undergo fission reaction and are desulfurized, decolored and deodorized simultaneously, and enter a condenser to become liquid oil and combustible gas, and benzopyrene is insoluble in oil and is mixed in the combustible gas in a gaseous state.

Here, the catalyst includes alumina, zinc hydroxide, sodium metasilicate, copper oxide, kaolin, rare earth lanthanum, vanadium, and the like. The rare earth poly-hydrogen characteristic is utilized to adsorb ash, colloid and sulfur in oil gas, thus achieving the functions of dewaxing, pour point depression, sulfur removal and deodorization and essentially improving the quality of oil.

It should be noted that a catalyst is also arranged in the silo 1, and the catalyst and the tar residue are mixed together, and the mixing proportion is 2-3 kg of catalyst mixed with one ton of tar residue. Make in tar sediment and the catalyst gets into the pyrolysis device, the pyrolysis together, the purpose makes the required "activation energy" of tar sediment pyrolysis, avoids the simple direct heating of tar sediment, and the pyrolysis improves efficiency, reduces consumption under gentle environment.

In this embodiment, a safety device is disposed between the oil-gas reforming catalyst device and the combustion chamber 13 to prevent the pipeline from backfiring and causing explosion. The safety device comprises a water resistor 24 and an air-water separator 25, wherein the water resistor 24 is communicated with an air outlet of the oil storage tank 23, water is contained in the water resistor 24, a through pipe arranged at an inlet of the water resistor 24 is arranged in the water resistor 24, and an outlet of the through pipe is not below the water surface, so that non-condensable gas entering the water resistor 24 can be discharged into the water to realize water sealing; the inlet of the gas-water separator 25 is communicated with the outlet of the water resistor 24, the outlet of the gas-water separator 25 is communicated with the combustion chamber 13, so that the non-condensable gas enters the gas-water separator 25, the gas enters the combustion chamber 13 after being subjected to gas-water separation, and pall ring packing is arranged in the gas-water separator 25, and the gas-water separation is realized by changing the gas flow.

The pall ring packing is a novel packing, is improved aiming at some main defects of the raschig ring, and is formed by opening eight layers of rectangular small windows on the wall of the common raschig ring, wherein the blades of the small windows are overlapped in the center of the ring, and the upper and lower surface layer windows are overlapped. The pall ring has the advantages that the ring wall is provided with the holes, so that the utilization rate of the space in the ring and the inner surface of the ring is greatly improved, the air flow resistance is low, and the liquid is uniformly distributed. The device has the advantages of large flux, small resistance, high separation efficiency, large operation elasticity and the like, thereby separating the moisture in the non-condensable gas.

The oil gas channel 11 is communicated with a gas-solid separation heterogeneous reforming tower 20 and a catalytic tower 21 through pipelines, hydrocarbon molecules of the oil gas channel are reformed through the action of a catalyst to generate diesel oil molecules in a directional mode, and oil gas (containing benzopyrene) is cleaned through the adsorption and molecular sieve action of the catalyst. Through heat exchange, oil gas cooling liquefaction, generate liquid oil and get into oil storage tank 23, because benzopyrene molecule is insoluble in oil, pass through water resistor 24 and gas-water separator 25 along with the noncondensable gas and handle the back, communicate by the combustor of pipeline and combustion chamber 13, provide fuel for it as the heat source. Therefore, the combustible gas is used by itself, and resources and cost are saved.

In this embodiment, the combustion waste gas environment-friendly treatment device comprises a washing tower 27, a cooling pool 26 filled with weak alkali cooling water, and a UV light oxygen treatment device 30, wherein an air inlet of the washing tower 27 is communicated with an outlet of the heat exchange furnace chamber 12, and an air inlet of the UV light oxygen treatment device 30 is communicated with an air outlet of the washing tower 27, so that the waste gas passes through the washing tower 27 and the UV light oxygen treatment device 30 in sequence and is discharged into the atmosphere through an exhaust funnel 37 after reaching the standard.

Wherein, be provided with spray set 28 in the scrubbing tower 27, spray set 28 is linked together with cooling tank 26, can be with the leading-in of weak alkali cooling water to scrubbing tower 27 in of cooling tank 26, spray set 28 sets up between the gas outlet and the air inlet of scrubbing tower 27 to the waste gas that gets into in scrubbing tower 27 can pass through spray set 28 and spray, makes waste gas contact weak alkali cooling water as far as possible, thereby realizes the mesh of cooling dust removal desulfurization. The weak base cooling water is recycled without being discharged outside, and is supplemented with a proper amount after a small amount of evaporation loss.

It should be noted that the air outlet of the scrubber 27 is located at the top end of the scrubber 27, and the air inlet of the scrubber 27 is located at the bottom end of the scrubber 27, so that the combustion exhaust gas entering the scrubber 27 passes through the spraying device 28, and the combustion exhaust gas is prevented from entering the UV light oxygen treatment device 30 without being cooled, dedusted and desulfurized.

Here, the spraying device 28 may be a high-pressure nozzle, and the spraying device 28 may be provided in plurality and arranged up and down uniformly, so as to further cool the exhaust gas, remove dust and desulfurize more thoroughly, and improve efficiency.

The ultraviolet lamp tube and the glass tube with the nano-scale titanium dioxide sprayed on the surface are arranged in the UV light oxygen treatment device 30, the ultraviolet lamp tube can be arranged around the glass tube, and the air inlet and the air outlet of the UV light oxygen treatment device 30 can be respectively arranged at two ends of the glass tube, so that combustion waste gas enters the glass tube, is irradiated by the ultraviolet lamp tube and is finally oxidized into water and carbon dioxide to be discharged into the atmosphere under the catalytic action of the titanium dioxide, thereby realizing the treatment of the waste gas and realizing micro-emission and zero pollution.

The outlet of the UV light oxygen treatment device 30 is communicated with an exhaust pipe 37, the height of the exhaust pipe 37 is not less than 15 m, and a detection port is left at 15 m of the exhaust pipe 37.

Wherein, the ultraviolet lamp tube emits ultraviolet rays with two wave bands of 253.7 microns and 185.0 microns in a rated mode, wherein the ultraviolet rays with 253.7 microns can disturb the molecular bonds of harmful substances (benzene, ether, ammonia and sulfur) in the waste gas components; the 185.0 μm ultraviolet ray can make oxygen molecules in the air generate ozone. The high-efficiency sterilization capability of high-energy UV light beams with specific wavelengths is utilized to crack molecular bonds of bacteria in malodorous gases, Destroy Nucleic Acid (DNA) of the bacteria, crack the malodorous gases such as: ammonia, trimethylamine, hydrogen sulfide, methylthio hydrogen, methyl mercaptan, methyl sulfide, dimethyl disulfide, carbon disulfide and styrene, sulfides H2S, VOCs, molecular chain structures of benzene, toluene and xylene, so that organic or inorganic high-molecular malodorous compound molecular chains are rapidly degraded and converted into low-molecular compounds, such as CO2, H2O and the like. The purposes of deodorization and sterilization are thoroughly achieved.

Titanium dioxide can generate a photocatalytic reaction similar to photosynthesis under the irradiation of ultraviolet light to generate free hydroxyl and active oxygen with extremely strong oxidizing power, has a very strong photoredox function, can oxidize and decompose various organic compounds and partial inorganic matters, can destroy cell membranes of bacteria and protein of solidified viruses, can kill bacteria and decompose organic pollutants, and decomposes the organic pollutants into pollution-free water (H2O) and carbon dioxide (CO2), so that the titanium dioxide has extremely strong functions of sterilization, deodorization, mildew prevention, pollution prevention, self cleaning and air purification.

In this embodiment, an induced draft fan 29 is further disposed between the washing tower 27 and the UV light oxygen treatment device 30, an air inlet of the induced draft fan 29 faces the washing tower 27, and an air outlet of the induced draft fan 29 faces the UV light oxygen treatment device 30, so as to form a negative pressure in the washing tower 27, maintain a negative pressure in the heat exchange furnace chamber 12 of the constant-temperature hot air generated by combustion, and exhaust the hot air generated by combustion from an outlet of the heat exchange furnace chamber 12 through the heat exchange furnace chamber 12, so that an exhaust speed is in direct proportion to heat exchange, and heat exchange efficiency is improved.

The exhaust gas in the scrubber 27 flows upward, the weak base cooling water sprayed from the spray device 28 flows downward, the liquid is not extracted when the induced draft fan 29 is operated, and a water-gas separator is provided at the top of the scrubber 27.

In the embodiment, the system is in a completely closed state, so that oxygen-containing air is prevented from entering, affecting pyrolysis of tar residues, generating potential safety hazards and the like. In the tar sediment adopted special closed vehicle to transport feed bin 1, loading and unloading tar sediment all adopted the robot operation, and feed bin 1's volume is 10 cubic meters to feed bin 1 is seal structure, connects through sealed tube between each device in this system, in order to guarantee the leakproofness of this system, all is provided with explosion-proof back-fire relief protection device on every pipeline, and explosion-proof back-fire relief protection device can be national standard pipeline spark arrester and national standard explosion-proof piece.

And after working for a period of time, solid substances such as carbon slag powder and the like in the oil gas can be deposited below the pipeline, the pipeline is easy to block after a long time, difficult to clean, troublesome and unsafe, and the pipeline nitrogen cleaning device is arranged at the end part of the pipeline to clean the pipeline by using pressurized nitrogen, so that the pipeline is ensured to be smooth at any time, safe and convenient.

The equipment of this system adopts intelligent full-automatic remote control, the workshop is unmanned, operation workman computer control, it is useless to need not to contact danger, this system is including controlling means promptly, controlling means and first motor 8, second motor 2, the combustor in the combustion chamber 13, storehouse pump 18, feed valve, discharge valve, oxygen-containing monitor 4, draught fan 29, spray set 28, ultraviolet fluorescent tube etc. all communicably connect, in order to control its work, thereby realize automatic control, realize intelligent remote operation, the contact of operating personnel with the danger is useless has been isolated.

The system for treating the industrial hazardous waste tar residue provided by the embodiment is characterized in that a feeding mechanism feeds the tar residue into a pyrolysis device at a constant speed according to a disposal speed, the tar residue is subjected to physical decomposition under the action of temperature and fluctuation at a fluctuation speed of 200-, then the waste gas enters a combustion chamber 13 for combustion, high temperature of more than 1100 ℃ is generated in the combustion process, the pyrolysis device is used as a heat source, the combustion waste gas enters a combustion waste gas environment-friendly treatment device, the cooling, dedusting and desulfurization and the photo-oxidation catalytic treatment are realized after the washing of a washing tower 27 and the treatment of a UV photo-oxidation treatment device 30, the removal rate of harmful substances reaches 99.99%, and the harmless emission up to the standard is realized through an exhaust funnel 37. The remaining solid carbon slag is discharged into a temperature-reducing temporary storage bin, and is discharged into a solid carbon bin 1 by a bin pump 18 for packaging and selling after temperature reduction (less than 150 ℃). The system finishes the treatment of tar residues, obtains mineral oil, solid carbon residues, combustible gas (self-use), has no emission except the standard emission of combustion waste gas, and realizes micro-emission and zero pollution.

After pyrolysis treatment of tar slag, the produced solid carbon slag accounts for about 70% of the total amount of the tar slag, the main components are about 48-50% of coke powder and about 20% of inorganic matters, the calorific value reaches about 5000 kilocalories, and the tar slag can be used as fuel of power plants, cement plants, brick factories and the like.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims (10)

1. The utility model provides a useless tar sediment processing system of industry danger which characterized in that, including:

the device comprises a feeding mechanism, a discharging mechanism and a control mechanism, wherein the feeding mechanism comprises a bin (1) for storing tar residues;

the pyrolysis device is used for pyrolyzing the tar residues and comprises a feed inlet (7) communicated with the bin (1), a discharge outlet (14) for discharging solid carbon materials, a fluctuation pyrolysis bed (10) communicated with the feed inlet (7) and the discharge outlet (14), a combustion chamber (13) used for heating the fluctuation pyrolysis bed (10), a heat exchange furnace chamber (12) communicated with the combustion chamber (13), an oil gas channel (11) located above the fluctuation pyrolysis bed (10) and communicated with the fluctuation pyrolysis bed (10), and a conveying device used for conveying the tar residues along the fluctuation pyrolysis bed (10);

the oil-gas recombination catalytic device is used for recombining oil gas generated by pyrolysis of the tar residues, the oil-gas recombination catalytic device is communicated with an outlet of the oil-gas channel (11), the oil-gas recombination catalytic device is communicated to an oil storage tank (23), and an air outlet is formed in the oil storage tank (23) and communicated with the combustion chamber (13);

and the combustion waste gas environment-friendly treatment device is used for treating waste gas generated in the combustion chamber (13), and the air inlet of the combustion waste gas environment-friendly treatment device is communicated with the air outlet of the heat exchange furnace chamber (12).

2. The system for treating industrial hazardous waste tar residues according to claim 1, wherein the conveying device comprises a shaftless blade (9) positioned in the wave pyrolysis bed (10) and a first motor (8) for driving the shaftless blade (9) to rotate, and the shaftless blade (9) is coaxially arranged with the wave pyrolysis bed (10) and has the same length.

3. The system for treating the industrial hazardous waste tar residues according to claim 1, wherein the feeding mechanism further comprises a screw (3) positioned in the storage bin (1) and a second motor (2) for driving the screw (3) to rotate, the second motor (2) is fixedly installed at the top end of the storage bin (1), the screw (3) is coaxially arranged with a discharge port of the storage bin (1), and the bottom end of the screw (3) is positioned at the discharge port of the storage bin (1).

4. The system for treating the industrial hazardous waste tar residues according to claim 1, wherein the storage bin (1) is further provided with a nitrogen inlet (5) communicated with a nitrogen storage tank and an exhaust port (6) for exhausting gas in the storage bin (1), and a vacuum pump is connected outside the exhaust port (6).

5. The system for treating industrial hazardous waste tar residues according to claim 1, wherein the oil gas recombination catalytic device comprises a catalytic device for gas-solid separation, carbon molecule recombination and catalysis of oil gas and a condenser (22) for liquefying oil gas, the condenser (22) is communicated with an outlet of the catalytic device, the catalytic device is communicated with an outlet of the oil gas channel (11), and the condenser (22) is communicated to the oil storage tank (23).

6. The system for treating the industrial hazardous waste tar residues according to claim 5, wherein the catalytic device comprises a gas-solid separation heterogeneous reforming tower (20) for gas-solid separation of oil gas and a catalytic tower (21) communicated with a gas outlet of the gas-solid separation heterogeneous reforming tower (20), the gas-solid separation heterogeneous reforming tower (20) is communicated with the oil-gas channel (11), the gas-solid separation heterogeneous reforming tower (20) is provided with an oil outlet, the oil outlet is connected with an oil storage tank (23), an outlet of the catalytic tower (21) is communicated with the condenser (22), and an adsorption pour point depressing catalyst is arranged in the catalytic tower (21).

7. The system for treating industrial hazardous waste tar residue according to claim 1, wherein the combustion waste gas environmental protection treatment device comprises a washing tower (27), a cooling pool (26) containing weak base cooling water and a UV photo-oxygen treatment device (30), the air inlet of the washing tower (27) is communicated with the outlet of the heat exchange furnace chamber (12), a spray device (28) communicated with the cooling pool (26) is arranged in the washing tower (27), the spray device (28) is positioned between the air outlet and the air inlet of the washing tower (27), the air inlet of the UV light oxygen treatment device (30) is communicated with the air outlet of the washing tower (27), and an ultraviolet lamp tube and a glass tube sprayed with nano titanium dioxide are arranged in the UV light oxygen treatment device (30), the air outlet of the UV light oxygen treatment device (30) is communicated to an exhaust pipe (37).

8. The system for treating industrial hazardous waste tar residues according to claim 7, wherein an induced draft fan (29) is further arranged between the air outlet of the washing tower (27) and the air inlet of the UV photo-oxidation treatment device (30), the air inlet of the induced draft fan (29) faces the washing tower (27), and the air outlet of the induced draft fan (29) faces the UV photo-oxidation treatment device (30).

9. The industrial hazardous waste tar residue treatment system according to claim 1, wherein the discharge port (14) is connected with a cooling temporary storage bin, the cooling temporary storage bin comprises an inner shell and an outer shell sleeved outside the inner shell, a cooling water channel (16) is reserved between the inner shell and the outer shell, the outer shell is provided with a cooling water inlet (15) and a cooling water outlet (17) communicated with the cooling water channel (16), the cooling water inlet (15) is close to the discharge port of the cooling temporary storage bin, and the cooling water outlet (17) is close to the feed inlet of the cooling temporary storage bin.

10. The system for treating the industrial hazardous waste tar residues according to claim 9, wherein a discharge hole of the cooling temporary storage bin is connected with a bin pump (18), and the bin pump (18) is provided with a gas inlet (19) for nitrogen gas to enter, a gas outlet for gas in the bin pump (18) to discharge and a discharge pipeline.

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