CN219526469U - Waste ionic liquid sludge drying device for ionic liquid alkylation group - Google Patents
Waste ionic liquid sludge drying device for ionic liquid alkylation group Download PDFInfo
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- CN219526469U CN219526469U CN202320533194.6U CN202320533194U CN219526469U CN 219526469 U CN219526469 U CN 219526469U CN 202320533194 U CN202320533194 U CN 202320533194U CN 219526469 U CN219526469 U CN 219526469U
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- ionic liquid
- rotary drum
- drying device
- washing tower
- sludge drying
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Abstract
The utility model discloses an ionic liquid alkylation group waste ionic liquid sludge drying device which comprises a sludge buffer tank, a rotary drum dryer and a washing tower. According to the utility model, the drum dryer is used for effectively evaporating the water in the waste ionic liquid sludge to obtain better treated flaky waste, so that the treatment difficulty of the waste ionic liquid is effectively reduced, and the environment-friendly requirement is met.
Description
Technical Field
The utility model belongs to the field of sludge drying, and particularly relates to an ionic liquid alkylation group waste ionic liquid sludge drying device.
Background
The waste ionic liquid sludge is alkaline washing water and waste ionic liquid which are generated in the production process of the alkylation device, active components in the waste ionic liquid are hydrolyzed through digestion reaction, solid sediment formed by acid-base neutralization is introduced into a flocculation precipitation tank, and a colleague adds a flocculating agent to generate larger flocs through gravity sedimentation, so that a mud-like mixture generated after solid-liquid separation is realized. Most of the existing waste ionic liquid sludge is not subjected to post-treatment or is subjected to pretreatment by mechanical dehydration. The method is simpler and does not meet the requirement of environmental protection.
Disclosure of Invention
The utility model aims to provide a method for drying waste ionic liquid sludge, which is energy-saving, consumption-reducing and resource recycling.
In order to achieve the above object, the present utility model provides an ionic liquid alkylation group waste ionic liquid sludge drying device, comprising:
a sludge buffer tank;
the rotary drum dryer comprises a shell, a rotary drum, a material disc, a scraper and a rotary drum discharging screw, wherein the material disc is positioned below the shell, forms a closed space with the shell and is communicated with the sludge buffer tank, the rotary drum is of a hollow structure, is fixed on the shell through a hollow shaft and can rotate in the closed space, and the bottom of the rotary drum is positioned in the material disc and is used for sticking slurry in the material disc; the scraper is fixed on the outer surface of the rotary drum and used for scraping solid matters after the surface of the rotary drum is dried, the rotary drum discharging screw is positioned below the scraper and used for receiving the solid matters hung by the scraper, and the discharging end is positioned outside the rotary drum dryer; a first gas outlet is arranged above the shell;
the washing tower is communicated with the first gas outlet, a production water inlet is formed in the washing tower and used for cooling and washing water vapor and carrier gas discharged from the drum dryer, a second gas outlet used for discharging the carrier gas is formed in the top of the washing tower and communicated with the drum dryer so as to circulate the carrier gas into a closed space of the drum dryer, a first liquid outlet used for discharging liquid in the washing tower is formed in the bottom of the washing tower, the first liquid outlet is connected with a washing tower cooling circulator used for cooling, and a recycling pipeline communicated with the washing tower is arranged on the washing tower cooling circulator.
The utility model discloses an ionic liquid alkylation group waste ionic liquid sludge drying device, wherein a venturi scrubber for preliminary dedusting and dehumidification is further arranged between a first gas outlet and a scrubber, and a second gas outlet is communicated with the venturi scrubber.
According to the ionic liquid alkylation group waste ionic liquid sludge drying device, one end of the hollow shaft is provided with the rotary joint I for introducing low-pressure steam and the rotary joint II for flowing out condensate.
According to the ionic liquid alkylation group waste ionic liquid sludge drying device, the rotary joint II is connected with a condensate storage tank, and the top of the condensate storage tank is connected with a flash evaporation steam cooler.
The utility model relates to an ionic liquid alkylation group waste ionic liquid sludge drying device, wherein a heat tracing system is further arranged on a shell of a rotary drum dryer.
The utility model relates to an ionic liquid alkylation group waste ionic liquid sludge drying device, wherein a first liquid outlet is also connected with a recovery water cooler.
The utility model relates to an ionic liquid alkylation group waste ionic liquid sludge drying device, wherein a slurry circulating pump is arranged between a sludge buffer tank and a rotary drum dryer.
According to the ionic liquid alkylation group waste ionic liquid sludge drying device, the discharge end of the rotary drum discharge screw is connected with a rotary discharge valve.
The utility model discloses an ionic liquid alkylation group waste ionic liquid sludge drying device, wherein a washing circulating pump is arranged between a first liquid outlet and a washing tower cooling circulator or a recovery water cooler.
The utility model has the beneficial effects that:
according to the utility model, the drum dryer is used for effectively evaporating the water in the waste ionic liquid sludge to obtain better treated flaky waste, so that the treatment difficulty of the waste ionic liquid is effectively reduced, and the environment-friendly requirement is met.
Drawings
FIG. 1 is a schematic diagram of a device for drying waste ionic liquid sludge in an ionic liquid alkylation group;
fig. 2 is a schematic structural view of a drum dryer according to the present utility model.
Wherein, the reference numerals:
1-a drum dryer;
2-a sludge buffer tank;
3-a slurry circulating pump;
a 4-venturi scrubber;
5-rotating a discharge valve;
6-a condensate storage tank;
7-a condensate pump;
8-flash steam cooler;
9-a washing tower;
10-a washing circulation pump;
11-induced draft fan;
12-a scrubber recycle cooler;
13-a recovery water cooler;
14-a sludge conveying pump;
15-a rotary joint I;
16-heat tracing steam inlet;
17-recycle gas inlet;
18-scraping knife;
19-overflow port I;
20-a material tray;
21-a rotating drum;
22-gas phase outlet;
23-a heat tracing condensate outlet;
24-rotary joint II;
25-drum discharging spiral;
26-a discharge hole;
27-overflow port II;
28-clean mouth.
Detailed Description
The following detailed description, given in conjunction with the accompanying drawings, describes the utility model in detail, but is not intended to limit the utility model.
FIG. 1 is a schematic diagram of a device for drying waste ionic liquid sludge in an ionic liquid alkylation group; fig. 2 is a schematic structural view of a drum dryer according to the present utility model. Referring to fig. 1 and 2, the present utility model provides an ionic liquid alkylation group waste ionic liquid sludge drying device, comprising: a sludge buffer tank 2, a drum dryer 1 and a washing tower 9.
A sludge transfer pump 14 is connected to the inlet of the sludge buffer tank 2 for transferring sludge into the sludge buffer tank 2.
The rotary drum dryer 1 comprises a shell, a rotary drum 21, a tray 20, a scraper 18 and a rotary drum discharging screw 25, wherein the tray 20 is positioned below the shell and forms a closed space with the shell, the tray 20 is communicated with the sludge buffer tank 2, a slurry circulating pump 3 is arranged between the sludge buffer tank 2 and the rotary drum dryer 1 and is used for conveying slurry into the tray 20, the rotary drum 21 is of a hollow structure and is fixed on the shell through a hollow shaft and can rotate in the closed space, and the bottom of the rotary drum 21 is positioned in the tray 20 and is used for sticking the slurry in the tray 20; the scraper 18 is fixed on the outer surface of the rotary drum 21 and used for scraping the solid matters on the surface of the rotary drum 21 after drying, the rotary drum discharging screw 25 is positioned below the scraper 18 and used for receiving the solid matters hung by the scraper 18, the discharging end 26 is positioned outside the rotary drum dryer 1, and the discharging end 26 of the rotary drum discharging screw 25 is also connected with the rotary discharging valve 5; a first gas outlet 22 is arranged above the shell, a first overflow port 19 and a second overflow port 27 are also arranged on the side wall of the shell near the material tray, and a cleaning port 28 is arranged at the bottom of the material tray.
As a preferred embodiment, the shell of the drum dryer 1 is further provided with a heat tracing system, and the heat tracing system is provided with a heat tracing steam inlet 16 and a heat tracing condensate outlet 23 for providing heat for the closed space in the drum dryer 1, so that the drum dryer can have better drying effect.
The washing tower 9 is communicated with the first gas outlet 22, a production water inlet is formed in the washing tower 9 and used for introducing production water into the washing tower 9 to cool and wash water vapor and carrier gas discharged from the drum dryer 1, a second gas outlet used for discharging the carrier gas is formed in the top of the washing tower 9, a circulating gas inlet 17 is formed in the shell of the drum dryer 1 and communicated with the circulating gas inlet 17, the carrier gas is circulated into a closed space of the drum dryer 1 through an induced draft fan 11, a first liquid outlet used for discharging liquid in the washing tower 9 is formed in the bottom of the washing tower 9, the first liquid outlet is connected with a washing tower circulating cooler 12 used for cooling, and a recycling pipeline communicated with the washing tower 9 is arranged on the washing tower circulating cooler 12.
As a preferred embodiment, a venturi scrubber 4 for preliminary dust removal and dehumidification is further provided between the first gas outlet 22 and the scrubber tower 9, and the second gas outlet is in communication with the venturi scrubber 4.
As a preferred embodiment, the first liquid outlet is further connected to a recovery water cooler 13, a wash circulation pump 10 is provided between the first liquid outlet and the wash tower circulation cooler 12 or the recovery water cooler 13, and a liquid portion discharged from the first liquid outlet enters the wash tower circulation cooler 12 through the wash circulation pump 10 and a portion enters the recovery water cooler 13.
As a preferred embodiment, one end of the hollow shaft is provided with a rotary connection I15 for the introduction of low-pressure steam and a rotary connection II 24 for the outflow of condensate. The low-pressure steam is introduced into the rotary drum 21 through a rotary joint I15, so that slurry stuck on the surface of the rotary drum 21 is dried, condensate in the rotary drum 21 flows out through a rotary joint II 24 after heat exchange, preferably, the rotary joint II 24 is connected with a condensate storage tank 6, the top of the condensate storage tank 6 is connected with a flash evaporation steam cooler 8, the condensate storage tank 6 is a normal-pressure storage tank, after drying, the condensate can flash evaporation in the condensate storage tank 6 to generate partial secondary steam, the secondary steam flows into the flash evaporation steam cooler 8 at the top of the condensate storage tank 6 to be condensed and then automatically flows back into the condensate storage tank 6, a small amount of noncondensable gas is directly discharged, a second liquid outlet is arranged at the bottom of the condensate storage tank 6, the second liquid outlet is connected with a condensate pump 7, and condensate in the condensate storage tank 6 is discharged through the condensate pump.
The using method of the device comprises the following steps:
the normal temperature waste ionic liquid sludge with the water content less than or equal to 90 percent is conveyed into a sludge buffer tank 2 through a sludge conveying pump 14, and the sludge slurry is pumped into a tray 20 of a rotary drum dryer 1 through a slurry circulating pump 3. The low pressure steam enters the drum 21, heats the drum 21, and the bottom portion of the drum 22 contacts the material in the tray 20, adhering the material to the surface of the drum 21 by constant rotation. The moisture in the materials adhered to the surface of the rotary drum 21 is heated by the steam in the rotary drum 21 to evaporate, the solid-containing materials are dried, the dried solid materials are scraped by the scraper 18 and enter the rotary drum discharging screw 25, and the solid materials are conveyed out of the rotary drum dryer 1 through the rotary drum discharging screw 25. The water vapor and the carrier gas in the closed space of the drum dryer 1 enter the Venturi scrubber 4 through the first gas outlet 22, part of water is recovered through preliminary dust removal and cooling, the cooled vapor and the circulating carrier gas are collected and then enter the washing tower 9 to further remove dust and dehumidify and recover dry vapor, the carrier gas after dust removal and dehumidification is discharged through the induced draft fan 11 and then enters the torch system, and part of the carrier gas is circulated into the drum dryer 1 for recycling. The liquid in the washing tower 9 is pressurized by the washing circulating pump 10, part of the liquid enters the washing circulating cooler 12 to be cooled, and then is respectively distributed into the washing tower 9 and the Venturi scrubber 4 for circulating use, and part of the liquid enters the recovery water cooler 13 to be cooled to below 40 ℃ and then is discharged to maintain the balance of the system.
The steam which is introduced into the rotary drum 21 through the rotary joint I15 is condensed into steam condensate after heat exchange and is discharged through the rotary joint II 24 at the other end, the steam condensate enters the condensate storage tank 6, the condensate storage tank 6 is an atmospheric storage tank, the dried condensate can be flashed in the condensate storage tank 6 to generate partial secondary steam, the secondary steam enters the flash steam cooler 8 at the top of the condensate storage tank 6 to be condensed and then automatically flows back into the condensate storage tank 6, and a small amount of non-condensable gas is directly discharged.
Of course, the present utility model is capable of other various embodiments and its several details are capable of modification and variation in light of the present utility model by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (9)
1. An ionic liquid alkylation group waste ionic liquid sludge drying device, which is characterized by comprising:
a sludge buffer tank;
the rotary drum dryer comprises a shell, a rotary drum, a material disc, a scraper and a rotary drum discharging screw, wherein the material disc is positioned below the shell, forms a closed space with the shell and is communicated with the sludge buffer tank, the rotary drum is of a hollow structure, is fixed on the shell through a hollow shaft and can rotate in the closed space, and the bottom of the rotary drum is positioned in the material disc and is used for sticking slurry in the material disc; the scraper is fixed on the outer surface of the rotary drum and used for scraping solid matters after the surface of the rotary drum is dried, the rotary drum discharging screw is positioned below the scraper and used for receiving the solid matters hung by the scraper, and the discharging end is positioned outside the rotary drum dryer; a first gas outlet is arranged above the shell;
the washing tower is communicated with the first gas outlet, a production water inlet is formed in the washing tower and used for cooling and washing water vapor and carrier gas discharged from the drum dryer, a second gas outlet used for discharging the carrier gas is formed in the top of the washing tower and communicated with the drum dryer so as to circulate the carrier gas into a closed space of the drum dryer, a first liquid outlet used for discharging liquid in the washing tower is formed in the bottom of the washing tower, the first liquid outlet is connected with a washing tower cooling circulator used for cooling, and a recycling pipeline communicated with the washing tower is arranged on the washing tower cooling circulator.
2. The ionic liquid alkylation group waste ionic liquid sludge drying device according to claim 1, wherein a venturi scrubber for preliminary dedusting and dehumidification is further arranged between the first gas outlet and the scrubber, and the second gas outlet is communicated with the venturi scrubber.
3. The ionic liquid alkylation group waste ionic liquid sludge drying device according to claim 1, wherein one end of the hollow shaft is provided with a rotary joint I for introducing low-pressure steam and a rotary joint II for discharging condensate.
4. The ionic liquid alkylation group waste ionic liquid sludge drying device according to claim 3, wherein the rotary joint II is connected with a condensate storage tank, and the top of the condensate storage tank is connected with a flash evaporation steam cooler.
5. The ionic liquid alkylation group waste ionic liquid sludge drying device according to claim 1, wherein a heat tracing system is further arranged on a shell of the rotary drum dryer.
6. The ionic liquid alkylation group waste ionic liquid sludge drying device according to claim 1, wherein the first liquid outlet is further connected with a recovery water cooler.
7. The ionic liquid alkylation group waste ionic liquid sludge drying device according to claim 1, wherein a slurry circulating pump is arranged between the sludge buffer tank and the rotary drum dryer.
8. The ionic liquid alkylation group waste ionic liquid sludge drying device according to claim 1, wherein a discharge end of the rotary drum discharge screw is connected with a rotary discharge valve.
9. The ionic liquid alkylation group waste ionic liquid sludge drying device according to claim 1 or 6, wherein a washing circulating pump is further arranged between the first liquid outlet and the washing tower cooling circulator or the recovery water cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320533194.6U CN219526469U (en) | 2023-03-17 | 2023-03-17 | Waste ionic liquid sludge drying device for ionic liquid alkylation group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320533194.6U CN219526469U (en) | 2023-03-17 | 2023-03-17 | Waste ionic liquid sludge drying device for ionic liquid alkylation group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219526469U true CN219526469U (en) | 2023-08-15 |
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ID=87625806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320533194.6U Active CN219526469U (en) | 2023-03-17 | 2023-03-17 | Waste ionic liquid sludge drying device for ionic liquid alkylation group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219526469U (en) |
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2023
- 2023-03-17 CN CN202320533194.6U patent/CN219526469U/en active Active
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