Catalyst regeneration device

Abstract

The utility model relates to the technical field of catalyst regeneration, in particular to a catalyst regeneration device which comprises a feeding machine, a material collecting box is arranged at a discharging port of the feeding machine, the discharging end of the material collecting box is communicated to the feeding end of a catalyst regeneration furnace, the catalyst regeneration furnace is divided into four communicated temperature sections, and a mesh belt conveying structure is arranged in the catalyst regeneration furnace. The mesh belt conveying structure penetrates through the four temperature sections, a flame nozzle is arranged below the mesh belt in each temperature section, the flame nozzles in each temperature section are communicated to an air blower and a natural gas supply position through pipelines, and adjusting valves are arranged on the pipelines where the flame nozzles in each temperature section are communicated with the natural gas supply position. An exhaust inlet communicated to a waste gas pipe is formed in the top in the catalyst regeneration furnace, the waste gas pipe is communicated to a waste gas treatment system, the discharging end of the catalyst regeneration furnace is communicated to the feeding end of a vibrating screen, the discharging end of the vibrating screen is communicated to the feeding end of a discharging machine, and the discharging end of the discharging machine is communicated to a catalyst collecting barrel. The catalyst can be recycled and reused.

Description

TECHNICAL FIELD

[0001] The utility model relates to catalyst regeneration technical field especially relates to a catalyst regeneration device. BACKGROUND

[0002] 2-ethylanthraquinone production process needs to use molecular sieve catalyst, and the molecular sieve catalyst is a kind of silicate compound with cubic lattice.In production process, molecular sieve catalyst is placed in fixed bed reactor, after reaction, first use negative pressure to extract fixed bed reactor, recover material, then use nitrogen to blow down temperature, then use solvent to clean fixed bed reactor.After the above-mentioned washing, the carbon substance accumulated on the catalyst taken down is still accumulated, and the accumulated carbon substance is organic matter, mainly high molecular tar by-product.

[0003] Catalyst does not directly participate in reaction in 2-ethylanthraquinone production process, so it can be reused, but due to the attachment of high molecular tar by-product outside, catalyst cannot be used again, if new catalyst is used each time, it will cause great waste. UTILITY MODEL CONTENT

[0004] In view of the above-mentioned defects, the utility model provides a catalyst regeneration device, which can remove the carbon substance accumulated on the surface of catalyst, and can be used again for 2-ethylanthraquinone production.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a catalyst regeneration device, including feeding machine, the discharge port of the feeding machine is provided with material collecting box, the discharge end of the material collecting box is communicated to the catalyst regeneration furnace feed end, the catalyst regeneration furnace is divided into 4 temperature sections that are communicated, the inside of the catalyst regeneration furnace is provided with mesh belt conveying structure, the mesh belt conveying structure penetrates 4 temperature sections, the lower portion of mesh belt in each temperature section is provided with flame nozzle, the flame nozzle in each temperature section is respectively communicated to air blower and natural gas supply place through pipeline, the pipeline, communicated to natural gas supply place, on the flame nozzle in each temperature section is provided with adjusting valve, the top of the catalyst regeneration furnace is provided with suction port, the suction port is communicated to waste gas pipe, the waste gas pipe is communicated to waste gas treatment system, the discharge end of the catalyst regeneration furnace is communicated to the feed end of vibrating screen, the discharge end of the vibrating screen is communicated to the feed end of discharging machine, the discharge end of the discharging machine is communicated to catalyst collecting barrel.

[0006] As a further improvement of the utility model, the waste gas treatment system comprises a flue cooler, the air inlet end of the flue cooler is communicated with the waste gas pipe, the air outlet end of the flue cooler is communicated to the air inlet end of the dust remover, the air outlet end of the dust remover is communicated to the air inlet end of the absorption tower, the absorption tower is provided with a liquid alkali inlet on one side, the liquid alkali inlet is communicated to the liquid alkali storage tank, the air outlet end of the absorption tower is communicated to the air inlet end of the induced draft fan, and the air outlet end of the induced draft fan is communicated to the chimney.

[0007] As a further improvement of the utility model, the bottom side of the absorption tower is provided with a water outlet, the water outlet is communicated to the absorption tower circulating water pool, the absorption tower circulating water pool is communicated to the liquid inlet end of the circulating pump, and the liquid outlet end of the circulating pump is communicated to the absorption tower.

[0008] As a further improvement of the utility model, the liquid outlet end of the circulating pump is provided with a four-way joint, the first end and the second end of the four-way joint are communicated to the liquid spraying head in the middle part and the top part of the absorption tower respectively.

[0009] As a further improvement of the utility model, the third end of the four-way joint is communicated to the sewage treatment station.

[0010] As a further improvement of the utility model, the bottom of the dust remover discharge port is provided with a conveying screw.

[0011] The utility model has the advantages of:

[0012] The catalyst with surface accumulated carbon substance is input into the catalyst regenerator, then the catalyst with surface accumulated carbon substance is sequentially heated through the different temperature sections arranged in the catalyst regenerator, so that the carbon substance accumulated on the surface of the catalyst is burned, the reduction regeneration of the catalyst is realized, and the catalyst can participate in 2-ethylanthraquinone production again. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the schematic diagram of the catalyst regenerator of the utility model;

[0014] Figure 2 It is the schematic diagram of the waste gas treatment system.

[0015] In the figure: 1-feeding machine, 2-material collecting box, 3-catalyst regenerator, 300-waste gas pipe, 301-gas inlet, 4-vibrating screen, 5-discharging machine, 6-catalyst collecting barrel, 7-air pipe, 8-gas pipe, 9-blower, 10-flue cooler, 11-dust remover, 12-conveying screw, 13-absorption tower, 130-first pipe, 131-second pipe, 132-third pipe, 133-fourth pipe, 134-fifth pipe; 14-absorption tower circulating pool, 15-circulating pump, 16-induced draft fan, 17-chimney. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the utility model clearer and more apparent, the utility model will be further described in detail below with reference to the drawings. It should be understood that the specific examples described herein are only used to explain the utility model and not to limit the utility model. The directions mentioned in the following examples, such as up, down, left, right, front or back, are only with reference to the direction of the drawings. Therefore, the directions used are used to explain and not to limit the utility model, and in all examples, the same reference numerals represent the same elements.

[0017] As shown in Figure 1 , Figure 2 , a catalyst regeneration device comprises a feeding machine 1, the feeding machine 1 is arranged upwardly inclined, the top of the lower side of the feeding machine 1 is provided with a first inlet, the bottom of the higher side of the feeding machine 1 is provided with a first outlet, the first outlet is communicated to the inlet of the material collecting box 2, and the outlet of the material collecting box 2 is communicated to the catalyst regenerator 3.

[0018] The catalyst regenerator 3 is provided with a second inlet on the side close to the feeding machine 1, and the second inlet is communicated with the outlet of the material collecting box 2. The catalyst regenerator 3 can be divided into four temperature sections, and the four temperature sections are arranged in series and communicated in sequence. The catalyst regenerator 3 is internally provided with a mesh belt conveying structure, and the mesh belt extends from one side of the second inlet, through each temperature section and to the other side of the catalyst regenerator 3.

[0019] A plurality of flame nozzles are arranged below the mesh belt, and the output ends of the flame nozzles are opposite the bottom of the mesh belt. The input ends of the flame nozzles of each temperature section are communicated to the corresponding gas inlets 301 through pipes. The gas inlets 301 are communicated to the outlet end of the blower 9 through the air pipe 7, the inlet end of the blower 9 is communicated to the atmosphere, air can be sucked into the catalyst regenerator 3. A tee joint is further arranged at the connection between the air pipe 7 and the gas inlet 301, the air pipe 7 is communicated to the natural gas pipe through the tee joint, and the end of the natural gas pipe is communicated to the natural gas supply. An adjusting valve is arranged on the natural gas pipe to control the flow of natural gas.

[0020] As a further illustration of the present application, combustible gas is supplied to the catalyst regenerator 3 by the natural gas supply and the blower 9. The combustible gas enters the catalyst regenerator 3 from the gas inlet 301 of each temperature section, and then ignites at the flame nozzle to heat the mesh belt by radiation. By controlling the regulating valve, the content of natural gas in the combustible gas can be adjusted to control the temperature in each temperature section.

[0021] The catalyst regenerator 3 is provided with a second discharge port at the end away from the second feed port, which is connected to the feed end of the vibrating screen 4, and the discharge end of the vibrating screen 4 is provided with a discharge machine 5. The feed end of the discharge machine 5 is connected to the discharge end of the vibrating screen 4, and the discharge end of the discharge machine 5 is connected to the catalyst collection barrel 6.

[0022] Each temperature section of the catalyst regenerator 3 is provided with an air suction port at the top, and each air suction port is connected to the exhaust gas pipe 300 through a pipeline, and the exhaust gas pipe 300 is connected to the exhaust gas treatment system through a pipeline.

[0023] The exhaust gas treatment system includes a flue cooler 10, the inlet end of which is connected to the exhaust gas pipe 300, and the outlet end of the flue cooler 10 is connected to the inlet end of the dust collector 11 through a pipeline, and the bottom of the dust collector 11 is provided with a discharge port, and the discharge port is provided with a conveying auger 12, which can discharge the ash produced in the dust collector 11 to a collection place. The outlet end of the dust collector 11 is connected to the inlet end of the absorption tower 13 through a pipeline.

[0024] The absorption tower 13 is provided with a liquid alkali inlet at the middle side, which is connected to the liquid alkali storage in the tank area through a second pipeline 131. The bottom side of the absorption tower 13 is provided with a water outlet, which is connected to the absorption tower circulating water tank 14 through a first pipeline 130, and the absorption tower circulating water tank 14 is connected to the inlet end of the circulating pump 15. The outlet end of the circulating pump 15 is connected to a four-way joint, the first end of the four-way joint is connected to the liquid spray head arranged in the middle of the absorption tower 13 through a third pipeline 132, and the third pipeline 132 is provided with a first ball valve. The second end of the four-way joint is connected to the liquid spray head arranged at the top of the absorption tower 13 through a fourth pipeline 133, and the fourth pipeline 133 is provided with a second ball valve. The third end of the four-way joint is connected to the sewage treatment station through a fifth pipeline 134, and the fifth pipeline 134 is provided with a third ball valve, and the sewage treatment station can further process the liquid alkali that cannot be used after absorbing the exhaust gas.

[0025] As a further illustration of the present example, the caustic soda in the tank area can be directly injected into the lower part of the absorption tower 13 through the first pipeline 130, and the caustic soda is discharged from the water outlet at the bottom of the absorption tower 13 into the absorption tower circulating pool 14. The caustic soda entering the absorption tower circulating pool 14 can enter the middle and upper parts of the absorption tower 13 through the circulating pump 15 and be dispersed and sprayed from the liquid spray head to absorb the waste gas. After absorption, the caustic soda falls again to the water outlet at the bottom of the absorption tower 13 and enters the absorption tower circulating pool 14, thereby realizing the recycling of the caustic soda.

[0026] The top of the absorption tower 13 is provided with an air outlet, and the air outlet of the absorption tower 13 is connected to the air inlet of the induced draft fan 16 through a pipeline. The induced draft fan 16 can suck the treated waste gas from the top of the absorption tower 13. The air outlet of the induced draft fan 16 is connected to the chimney 17 through a pipeline, and the treated harmless waste gas can be discharged through the chimney 17.

[0027] The working principle and use process of the present application are as follows:

[0028] The accumulated carbon-containing material of the catalyst after 2-ethyl anthraquinone production and use is put into the feeding machine 1, and the feeding machine 1 delivers the catalyst to the collecting box 2, and then falls onto the mesh belt in the catalyst regenerator 3.

[0029] The combustible gas is introduced into the gas inlet 301 of each temperature section of the catalyst regenerator 3 through the air blower 9 and the natural gas supply, and then ignited at the flame nozzle. At the same time, by controlling the content of natural gas in the combustible gas, the temperature of the four temperature sections in the catalyst regenerator 3 gradually increases. The temperatures in the four temperature sections are 110℃, 350℃, 420℃ and 530℃, respectively.

[0030] The accumulated carbon-containing material on the catalyst starts to burn after passing through the 350℃ temperature section, and the catalyst is regenerated. The regenerated catalyst is discharged from the second discharge port of the catalyst regenerator 3, screened through the vibrating screen 4 to remove the catalyst with too small particles, and then delivered to the catalyst collecting barrel 6 through the discharge machine 5 for secondary use.

[0031] At the same time, the waste gas generated by the carbon-containing material on the catalyst enters the waste gas treatment system, is cooled by the flue cooler 10, is dedusted by the dust remover 11, and is alkaline absorbed by the absorption tower 13, thereby realizing the treatment of the waste gas. Finally, the treated waste gas is sucked out of the absorption tower 13 by the induced draft fan 16 and discharged from the chimney 17 back to the atmosphere.

[0032] The above is only a preferred embodiment of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solution falling within the scope of the present application shall be considered as falling within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the art, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements shall also be considered as falling within the protection scope of the present application.

Claims

1. A catalyst regeneration apparatus characterized by comprising: The application relates to a catalyst regeneration device, which comprises a feeding machine (1), a collecting box (2) arranged at the discharging port of the feeding machine (1), a catalyst regeneration furnace (3) communicated with the discharging end of the collecting box (2), a net belt conveying structure arranged in the catalyst regeneration furnace (3), a plurality of fire nozzles arranged below the net belt conveying structure, a plurality of air blowers (9) and natural gas supply sources communicated with the fire nozzles respectively, adjusting valves arranged on the pipelines communicated with the fire nozzles and the natural gas supply sources, an air suction port arranged at the top of the catalyst regeneration furnace (3), a waste gas pipe (300) communicated with the air suction port, a waste gas treatment system communicated with the waste gas pipe (300), a vibrating screen (4) communicated with the discharging end of the catalyst regeneration furnace (3), a discharging machine (5) communicated with the discharging end of the vibrating screen (4), and a catalyst collecting barrel (6) communicated with the discharging end of the discharging machine (5).

2. The catalyst regenerator of claim 1, wherein The waste gas treatment system comprises a flue cooler (10), an air suction port of the flue cooler (10) communicated with the waste gas pipe (300), a dust remover (11) communicated with the air discharging end of the flue cooler (10), an air suction port of the dust remover (11) communicated with the air discharging end of the dust remover (11), an absorption tower (13) communicated with the air discharging end of the dust remover (11), a liquid alkali inlet arranged on one side of the absorption tower (13), a liquid alkali storage tank communicated with the liquid alkali inlet, an air suction port of an induced draft fan (16) communicated with the air discharging end of the absorption tower (13), and a chimney (17) communicated with the air discharging end of the induced draft fan (16).

3. The catalyst regenerator of claim 2, wherein, A water outlet is arranged on one side of the bottom of the absorption tower (13), the water outlet is communicated with an absorption tower circulating pool (14), a liquid inlet end of a circulating pump (15) is communicated with the absorption tower circulating pool (14), and a liquid outlet end of the circulating pump (15) is communicated with the absorption tower (13).

4. The catalyst regenerator of claim 3, wherein A four-way joint is arranged at the liquid outlet end of the circulating pump (15), a liquid injection head arranged at the middle and top of the absorption tower (13) is communicated with the first end and the second end of the four-way joint respectively.

5. The catalyst regenerator of claim 4, wherein, The third end of the four-way joint is communicated with a sewage treatment station.

6. The catalyst regenerator of claim 2, wherein A conveying auger (12) is arranged at the bottom of the discharging port of the dust remover (11).

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