CN212818206U - Rectifying tower for separating and recovering acetone in acetone-azine hydrolysis waste liquid - Google Patents
Rectifying tower for separating and recovering acetone in acetone-azine hydrolysis waste liquid Download PDFInfo
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- CN212818206U CN212818206U CN202021395089.3U CN202021395089U CN212818206U CN 212818206 U CN212818206 U CN 212818206U CN 202021395089 U CN202021395089 U CN 202021395089U CN 212818206 U CN212818206 U CN 212818206U
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Abstract
The utility model provides a rectifying column of acetone in acetone continuous nitrogen hydrolysis waste liquid is retrieved in separation, includes tower body, separator, and the big footpath section bottom of tower body is equipped with row material pipe, and the lateral wall is equipped with the inlet pipe, and the top of path section is equipped with the blast pipe, and separator includes the distributor, packs, tower tray, and the distributor is located the path section of tower body, and the tower tray setting is located the top of inlet pipe in the big footpath section of tower body, packs to set up in the big footpath section of tower body, is located the top of tower tray. The utility model discloses simple structure, maintenance convenience for acetone azino method hydrazine hydrate waste liquid recovery system of hydrolysising, its effect is retrieve acetone and separation isopropanol and its derivative, and can effectively avoid the pressure drop rising phenomenon that high polymer adhesion such as pyrazoline, ketone high polymer arouses, guarantees the long-time normal operating of rectifying column.
Description
Technical Field
The utility model relates to a chemical industry field, in particular to a rectifying column of acetone among acetone azine hydrolysis waste liquid is retrieved in separation for acetone azine method hydrazine hydrate hydrolysis waste liquid recovery system.
Background
The process of hydrazine hydrate by ketazine method includes the reaction of ammonia with oxidant sodium hypochlorite in the presence of excessive acetone, using acetone as intermediate medium to produce relatively stable ketazine by utilizing the characteristic that acetone and amine substance are easy to produce carbonyl addition, separating ketazine and recovering excessive ammonia and acetone, collecting the obtained ketazine, hydrolyzing at high temperature to produce dilute solution of hydrazine hydrate, and concentrating and purifying to produce hydrazine hydrate product.
The ketazine hydrolysis is a reversible reaction in the process of generating hydrazine hydrate and acetone in a hydrolysis system, and the acetone obtained at the top of the hydrolysis tower is recycled and reused after passing through a tower top condenser; and (3) obtaining hydrazine hydrate containing a small amount of ketazine at the bottom of the hydrolysis tower, sending the hydrazine hydrate into a ketazine rectification tower to further separate the ketazine and the hydrazine hydrate, returning unhydrolyzed ketazine to the hydrolysis tower through a gas phase pipe for continuous hydrolysis, and sending the hydrazine hydrate into a rectification tower for concentration.
In the hydrolysis reaction process, the following side reactions may also occur to form impurities, acetone generated in the hydrolysis reaction is reduced to obtain isopropanol, the isopropanol and hydrazine hydrate generate isopropyl hydrazine, the substance cannot be hydrolyzed to generate hydrazine hydrate, raw materials are consumed, and the yield of the hydrazine hydrate is reduced.
Meanwhile, the acetone azine is not completely hydrolyzed to generate hydrazone, the hydrazone is subjected to disproportionation reaction during heating to form ketone azine and hydrazine hydrate, the hydrazine hydrate and the hydrazone of the ketone are unstable compounds, and a large amount of pyrazoline and other byproducts are generated in the high-temperature heating process through intramolecular reaction or reaction with the ketone; furthermore, the ketones themselves can form condensates over a long period of time at high temperatures. In the practical production of hydrazine hydrate, in order to avoid the problem that the content of isopropyl hydrazine and other impurities is excessively high and influence the hydrolysis rate of hydrazine hydrate ketazine, when the content of isopropyl hydrazine is more than 6%, ketazine solution containing impurity isopropyl hydrazine in a hydrazine hydrate hydrolysis system is introduced into an impurity treatment system, namely a two-stage series-connected pressurized hydrolysis separation tower, the ketazine is hydrolyzed into acetone and hydrazine hydrate by adopting a two-stage pressurized hydrolysis and separation mode, the acetone is recycled, and the separated isopropyl hydrazine waste liquid is separately treated.
However, in the process of pressure treatment of the acetonitril hydrolysis impurities, pyrazoline and other by-products and ketone condensation compounds are easy to adhere to trays and fillers due to high viscosity to cause blockage, the tower pressure drop is increased in the operation process, and after the tower pressure is increased, the isopropanol hydrazine is easy to be natural under high pressure, so that fire and explosion accidents occur.
Therefore, how to design a separation tower capable of safely operating for a long time is a problem to be solved urgently by those skilled in the art.
Disclosure of Invention
The utility model aims at prior art not enough, reform transform tray and tower internals, provide a separation and retrieve the rectifying column of acetone in the acetone azine hydrolysis waste liquid, its effect is that retrieve acetone and separate isopropanol and derivative, avoid the pressure drop rising phenomenon that high polymer adhesion such as pyrazoline, ketone high polymer arouses, guarantee long-time normal operating.
The technical scheme of the utility model is that: a rectifying tower for separating and recovering acetone from acetone-nitrogen hydrolysis waste liquid comprises a tower body and a separating device arranged in the tower body, wherein the upper part of the tower body is a small-diameter section, the lower part of the tower body is a large-diameter section, the bottom of the large-diameter section is provided with a discharge pipe, the side wall of the tower body is provided with a feed pipe, the top of the small-diameter section is provided with an exhaust pipe, the separating device comprises a plurality of distributors, filler and a tower tray, the distributors are arranged in the small-diameter section of the tower body and are distributed at intervals along the height direction, the inlets of the distributors are used for being connected with an acetone source, the jet orifices of the distributors face downwards, the tower tray is arranged in the large-diameter section of the tower body and is positioned above the feed pipe, the tower tray is provided with a plurality of through mounting holes, exchange pipelines are respectively arranged in the mounting holes, each exchange pipeline extends along the height direction of the tower body, the upper end, the upper end of the connecting rod extends out of the exchange pipeline and is fixedly connected with the upper cover, the lower end of the connecting rod extends out of the exchange pipeline and is fixedly connected with the lower cover, the projection area of the upper cover covers the upper end opening of the exchange pipeline, and the filler is arranged in the large-diameter section of the tower body and is positioned above the tower tray.
The heat exchange medium coil is arranged at the bottom of the inner cavity of the tower body and is positioned below the feeding pipe.
And a liquid discharge pipe is arranged on the side wall of the tower body, and the height of the liquid discharge pipe is adapted to that of the tower tray.
The distributor is responsible for including distributing to and a plurality of distribution branch pipes, the one end that the distribution was responsible for seals, fixes on the inner wall of tower body, and the other end that the distribution was responsible for is followed the radial outer tower body that stretches out of tower body for link to each other with the acetone source, and a plurality of distribution branch pipes divide and establish in the both sides that the distribution was responsible for, and the length direction evenly distributed who is responsible for along the distribution, and the one end of each distribution branch pipe is responsible for the intercommunication with the distribution, and the other end seals, and extends towards the inner wall of tower body, is responsible for with the distribution and is vertical distribution, the bottom that distributes the.
The number of each group of injection ports is three, wherein the first injection port faces downwards vertically, and the second injection port and the third injection port are respectively positioned at two sides of the first injection port and form an included angle of 30 degrees with the first injection port.
And the upper part and the lower part of the filler are respectively provided with a separation net.
The large-diameter section side wall of the tower body is provided with a manhole, and the manhole is sealed through a sealing cover.
The lower cover is provided with a plurality of through holes.
The large-diameter section side wall of the tower body is provided with a spray pipe, the upstream end of the spray pipe is used for being connected with a steam outlet of the acetone-azone hydrolysis waste liquid secondary separation tower, and the downstream end of the spray pipe is bent downwards by 90 degrees and is positioned below a tower tray.
Adopt above-mentioned technical scheme to have following beneficial effect:
1. the rectifying column of acetone in the separation recovery acetone azine hydrolysis waste liquid includes the tower body to and set up at the empty separator in the tower body, the upper portion of tower body is the path section, the lower part of tower body is the path section, the bottom of path section is equipped with row material pipe, the lateral wall is equipped with the inlet pipe, the top of path section is equipped with the blast pipe, wherein, it is used for discharging the material after the separation to arrange the material pipe, the blast pipe is used for discharging acetone steam, after the condensation, partial recycle, partial reflux to tower body, the inlet pipe is used for providing acetone azine hydrolysate to the tower body, this acetone azine hydrolysate is provided by the system hydrolysis tower, self has higher temperature, generally 105 ℃. The separation device comprises a distributor, a filler and a tower tray, and most of acetone in the acetone azine hydrolysate entering the tower body is discharged in a steam form under the action of the self temperature, so that the separation and recovery of the acetone are realized. The distributor is a plurality of, is located the path section of tower body, along direction of height interval distribution, and the import of each distributor is used for being connected with the acetone source, and the jet orifice of distributor is down, and the distributor jets liquid acetone from the jet orifice of distributor downwards outside the tower, washes drenches steam, holds back the hydrazine hydrate steam, the vapor that mix with wherein in to the tower, guarantees the purity of discharged steam, avoids the hydrazine hydrate loss. The tower tray sets up in the major diameter section of tower body, is located the top of inlet pipe, be equipped with a plurality of mounting holes that run through on the tower tray, be equipped with the exchange pipeline in each mounting hole respectively, each exchange pipeline extends along the direction of height of tower body, and the upper end exceeds the height of tower tray, is equipped with the connecting rod in each exchange pipeline respectively, the exchange pipeline is stretched out outward to the upper end of connecting rod, with upper cover fixed connection, the exchange pipeline is stretched out outward to the lower extreme of connecting rod, with lower cover fixed connection, promptly, the length of pull rod is greater than the length of exchange pipeline. The projected area of upper cover covers the upper end opening of exchange tube way, that is, under the normal condition, the upper end opening of exchange tube way is closed by the upper cover, the acetone that the distributor sprays collects on the tray that corresponds, and the liquid level flushes with the upper end of exchange tube way, form the acetone liquid layer, the steam that the tower body produced gets into the exchange tube way by the lower extreme opening of exchange tube way, and open the upper cover, discharge from the upper end opening of exchange tube way, flow to in the acetone liquid layer on the tray, acetone wherein keeps the condensation, evaporation state, evaporate the discharge upwards again from the tray, wherein very little vapor, hydrazine hydrate obtain holding, and along with the acetone liquid layer from the upper end opening backward flow of exchange tube way, realize the high-efficient separation of acetone in the nitrogen connecting hydrolysate of acetone, and no energy resource consumption, hydrazine hydrate obtains keeping simultaneously, avoid the hydrazine hydrate loss.
2. And a liquid discharge pipe is arranged on the side wall of the tower body, the height of the liquid discharge pipe is adapted to the height of the corresponding tower tray, and after separation is finished, an acetone liquid layer on the tower tray is discharged by opening the liquid discharge pipe, and the acetone liquid layer is recycled after treatment.
3. The distributor is responsible for and a plurality of distribution branch pipe including distributing, the one end that the distribution was responsible for seals, fixes on the inner wall of tower body, and the other end that the distribution was responsible for is followed the tower body radially outwards to extend out for link to each other with the acetone source, and a plurality of distribution branch pipe divide to establish in the both sides that the distribution was responsible for, and the length direction evenly distributed who is responsible for along the distribution, and the one end and the distribution of each distribution branch pipe are responsible for the intercommunication, and the other end seals, and extends towards the inner wall of tower body, promptly, is responsible for with the distribution and is the vertical distribution, the bottom that distributes the branch pipe is equipped with the multiunit jet orifice along the length direction interval, and the liquid acetone that goes into the distributor from the acetone source is responsible for, the distribution branch pipe through the distribution, from the.
4. The number of each group of injection ports is three, wherein the first injection port faces downwards vertically, the second injection port and the third injection port are respectively positioned on two sides of the first injection port and form an included angle of 30 degrees with the first injection port, the number of each group of injection ports is three, and the injection angles have differences, so that the spraying effect of the acetone liquid can be further improved.
5. The lower cover is provided with a plurality of through holes, so that the lower cover is prevented from being tightly propped against the exchange pipeline by steam generated at the lower part of the tower body, and the steam is ensured to smoothly pass through the exchange pipeline.
6. The large-diameter section side wall of the tower body is provided with a spray pipe, the upstream end of the spray pipe is used for being connected with a steam outlet of an acetone azine hydrolysis waste liquid secondary separation tower, the downstream end of the spray pipe is bent downwards by 90 degrees and is positioned below a tower tray, separated materials are discharged through a discharge pipe and enter the secondary separation tower, heating hydrolysis is carried out to generate acetone and hydrazine hydrate, the acetone and the impurity isopropyl hydrazine with lower boiling point in the secondary separation tower are continuously evaporated by controlling the rectification temperature of the secondary separation tower, the acetone is returned to the large-diameter section of the tower body through the spray pipe, the acetone is kept in a steam state and is discharged through an exchange pipeline, the impurities are condensed into a liquid state and fall back to the bottom of the tower body, and finally the concentrated treatment is discharged.
The following further description is made with reference to the accompanying drawings and detailed description.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of FIG. 1 at M;
FIG. 3 is a schematic structural diagram of the distributor of the present invention;
fig. 4 is a sectional view taken along line a-a of fig. 3.
In the drawing, 1 is a tower body, 11 is a discharge pipe, 12 is an exhaust pipe, 13 is a feed pipe, 14 is a discharge pipe, 15 is a heat exchange medium coil pipe, 16 is a manhole, 17 is a spray pipe, 2 is a separation device, 21 is a distributor, 211 is an inlet, 212 is a spray port, 213 is a distribution main pipe, 214 is a distribution branch pipe, 22 is a filler, 23 is a tray, 24 is a exchange pipeline, 25 is a connecting rod, 26 is an upper cover, and 27 is a lower cover.
Detailed Description
The utility model discloses in, the structure or the device that do not mark are the conventional structure or the device in chemical industry field, do not mark all according to chemical industry field or the mode that the firm stipulated of concrete connection mode and connect.
Referring to fig. 1 to 4, a specific embodiment of a rectification column for separating and recovering acetone from the acetonitril hydrolysis waste liquid is shown. The rectifying tower comprises a tower body 1 and a separating device 2 arranged in the tower body 1. The upper portion of tower body 1 is the path section, the lower part of tower body 1 is the path section, the bottom of path section is equipped with row material pipe 11, the lateral wall is equipped with inlet pipe 13, the top of path section is equipped with blast pipe 12, it is concrete, the tower body passes through the support to be fixed in appointed place, the inlet pipe sets up the lateral wall lower part at the tower body, it is used for being connected with the rectifying column to arrange the material pipe, the blast pipe is through the condenser, be connected with the acetone transfer jar, the inlet pipe then is connected with the system hydrolysis tower, generally, opening or closing of these pipelines, handle according to the normal operating rules in chemical industry field. The separation device 2 comprises a distributor 21, a packing 22 and a tray 23. The distributor 21 is a plurality of, is located the path section of the tower body 1, along direction of height interval distribution, and the import 211 of each distributor 21 is used for being connected with the acetone source, and the jet 212 of distributor 21 is down, and in this embodiment, the quantity of distributor is four, and distributor 21 is including distributing main pipe 213 to and a plurality of distribution branch pipe 214, the one end that distributes main pipe 213 seals, fixes on the inner wall of tower body 1, and the other end that distributes main pipe 213 outwards stretches out the tower body 1 along the tower body 1 is radial, is used for linking to each other with the acetone source, and is specific, and the import and the acetone transfer tank of distributor are connected. The plurality of the distribution branch pipes 214 are respectively arranged at two sides of the distribution main pipe 213 and are uniformly distributed along the length direction of the distribution main pipe 213, one end of each distribution branch pipe 214 is communicated with the distribution main pipe 213, the other end of each distribution branch pipe 214 is sealed and extends towards the inner wall of the tower body 1 and is vertically distributed with the distribution main pipe 213, and specifically, the number of the distribution branch pipes is twenty-two, the distribution branch pipes are divided into two groups and are respectively arranged at two sides of the distribution main pipe. The bottom of the distribution branch pipe 214 is provided with a plurality of groups of injection ports 212 at intervals along the length direction, and specifically, the number of the injection ports arranged on the distribution branch pipe is distributed from five to ten groups according to the length of each distribution branch pipe. The number of each group of the injection ports 212 is three, wherein the first injection port faces downwards vertically, and the second injection port and the third injection port are respectively positioned at two sides of the first injection port and form an included angle of 30 degrees with the first injection port. The tray 23 is arranged in the large-diameter section of the tower body 1 and above the feeding pipe 13, a plurality of through mounting holes are arranged on the tray 23, generally, the mounting holes are uniformly distributed along the projection of the tray, and reinforcing ribs are generally welded at the bottom of the tray in order to ensure the structural strength of the tray. Each mounting hole is provided with an exchange pipeline 24, each exchange pipeline 24 extends along the height direction of the tower body 1, the upper end of each exchange pipeline 24 is higher than the height of the tray 23, each exchange pipeline 24 is provided with a connecting rod 25, the upper end of each connecting rod 25 extends out of the exchange pipeline 24 and is fixedly connected with an upper cover 26, the lower end of each connecting rod 25 extends out of the exchange pipeline 24 and is fixedly connected with a lower cover 27, and the projection area of the upper cover 26 covers the upper end opening of the exchange pipeline 24. The filler 22 is arranged in the large-diameter section of the tower body 1 and is positioned above the tower tray 23, the upper part and the lower part of the filler 22 are respectively provided with a separation net, namely, the filler is supported on the separation net below and is limited by the separation net above, and the filler is conventional in the chemical field.
Further, in order to control the problem of the hydrolysate, a heat exchange medium coil 15 is arranged at the bottom of the inner cavity of the tower body 1, the heat exchange medium coil 15 is positioned below the feeding pipe 13, and a heating medium or a cooling medium can be introduced into the heat exchange medium coil.
Furthermore, in order to recover the acetone collected by the trays, a drain pipe 14 is provided on the side wall of the column body 1, the height of the drain pipe 14 is adapted to the height of the trays 23 and extends in the horizontal direction, and normally, the drain pipe is in a closed state.
Further, for convenient installation and maintenance, the side wall of the tower body 1 is provided with three manholes 16, and the manholes are respectively sealed by sealing covers.
Furthermore, in order to recycle acetone generated by hydrolysis of the second-stage separation tower, a spray pipe is arranged on the side wall of the large-diameter section of the tower body, the upstream end of the spray pipe is used for being connected with a steam outlet of the acetone-azine hydrolysis waste liquid second-stage separation tower, and the downstream end of the spray pipe is bent downwards by 90 degrees and is positioned below the tray. The material separated in the rectifying tower is discharged through a discharge pipe, enters a secondary separating tower, is heated and hydrolyzed to generate acetone and hydrazine hydrate, acetone and impurity isopropyl hydrazine with lower boiling point in the secondary separating tower are continuously evaporated by controlling the rectifying temperature of the secondary separating tower, and return to the large-diameter section of the tower body through a spray pipe, wherein the acetone keeps in a vapor state and is discharged through an exchange pipeline, the impurity in the acetone is condensed into a liquid state and falls back to the bottom of the tower body, and finally the acetone and the hydrazine hydrate are discharged for centralized treatment.
The utility model discloses an operating principle does, utilizes the distributor, collects the acetone liquid layer on making the tower tray, and the upper end opening of the thickness and the interchange passageway of liquid layer flushes. The inlet pipe is opened, the acetone azine hydrolysate in the system hydrolysis tower is discharged into the tower body, acetone in the hydrolysate is evaporated under the heat of the hydrolysate, the upper cover of the exchange pipeline is firstly jacked open by the steam and flows into the acetone liquid layer, the acetone steam forms a condensation and evaporation state in the liquid layer, and after the acetone steam upwards passes through the filler, partial condensation backflow can effectively guarantee the purity of the discharged acetone steam. And a very small amount of water vapor and hydrazine hydrate in the steam are intercepted, and the acetone liquid layer flows back from an opening at the upper end of the exchange pipeline along with the acetone liquid layer, so that the efficient separation of the acetone in the acetone azine hydrolysate is realized. The impurity isopropyl hydrazine is continuously evaporated and returns to the large-diameter section of the tower body through the spray pipe, the acetone in the acetone keeps in a vapor state, the acetone is discharged through the exchange pipeline and the filler, liquid acetone is obtained through condensation, the impurity in the acetone is condensed into liquid, the liquid acetone falls back to the bottom of the tower body, and finally the liquid acetone is discharged for centralized treatment.
Claims (9)
1. The utility model provides a rectifying column of acetone in separation recovery acetone azine hydrolysis waste liquid which characterized in that: comprises a tower body (1) and a hollow separating device (2) arranged in the tower body (1),
the upper part of the tower body (1) is a small-diameter section, the lower part of the tower body (1) is a large-diameter section, the bottom of the large-diameter section is provided with a discharge pipe (11), the side wall is provided with a feed pipe (13), the top of the small-diameter section is provided with an exhaust pipe (12),
the separation device (2) comprises a distributor (21), a filler (22) and a tray (23),
the number of the distributors (21) is multiple, the distributors are positioned in the small-diameter section of the tower body (1) and are distributed at intervals along the height direction, the inlet (211) of each distributor (21) is used for being connected with an acetone source, the jet orifice (212) of each distributor (21) faces downwards,
the tower tray (23) is arranged in a large-diameter section of the tower body (1) and is positioned above the feeding pipe (13), a plurality of through mounting holes are formed in the tower tray (23), exchange pipelines (24) are respectively arranged in the mounting holes, each exchange pipeline (24) extends along the height direction of the tower body (1), the upper end of each exchange pipeline is higher than the height of the tower tray (23), connecting rods (25) are respectively arranged in each exchange pipeline (24), the upper ends of the connecting rods (25) extend out of the exchange pipelines (24) and are fixedly connected with an upper cover (26), the lower ends of the connecting rods (25) extend out of the exchange pipelines (24) and are fixedly connected with a lower cover (27), and the projection area of the upper cover (26) covers an upper end opening of each exchange pipeline (24),
the packing (22) is arranged in the large-diameter section of the tower body (1) and is positioned above the tray (23).
2. The rectification tower for separating and recovering acetone from the acetonitriding hydrolysis waste liquid as claimed in claim 1, characterized in that: the heat exchange medium tower is characterized in that a heat exchange medium coil (15) is arranged at the hollow bottom of the tower body (1), and the heat exchange medium coil (15) is located below the feeding pipe (13).
3. The rectification tower for separating and recovering acetone from the acetonitriding hydrolysis waste liquid as claimed in claim 1, characterized in that: and a liquid discharge pipe (14) is arranged on the side wall of the tower body (1), and the height of the liquid discharge pipe (14) is adapted to the height of the tray (23).
4. The rectification tower for separating and recovering acetone from the acetonitriding hydrolysis waste liquid as claimed in claim 1, characterized in that: distributor (21) are responsible for (213) including distributing to and a plurality of distribution branch pipe (214), the distribution is responsible for the one end of (213) and is sealed, fixes on the inner wall of tower body (1), and the distribution is responsible for the other end of (213) and radially outwards extends tower body (1) along tower body (1), is used for linking to each other with the acetone source, and a plurality of distribution branch pipe (214) divide to establish and are being responsible for the both sides of (213) in the distribution, is responsible for the length direction evenly distributed of (213) along the distribution, and the one end and the distribution of each distribution branch pipe (214) are responsible for (213) intercommunication, and the other end seals, and extend towards the inner wall that tower body (1) was responsible for, is vertical distribution with distribution (213), the bottom of distributing branch pipe (214) is equipped with multiunit.
5. The rectification tower for separating and recovering acetone from the acetonitrilic hydrolysis waste liquid as claimed in claim 4, characterized in that: the number of each group of injection ports (212) is three, wherein the first injection port faces downwards vertically, and the second injection port and the third injection port are respectively positioned at two sides of the first injection port and form an included angle of 30 degrees with the first injection port.
6. The rectification column for separating and recovering acetone from the acetonitriding hydrolysis waste liquid according to claim 1: the method is characterized in that: and the upper part and the lower part of the filler (22) are respectively provided with a separation net.
7. The rectification tower for separating and recovering acetone from the acetonitriding hydrolysis waste liquid as claimed in claim 1, characterized in that: a manhole (16) is arranged on the side wall of the large-diameter section of the tower body (1), and the sealing cover is used for sealing.
8. The rectification tower for separating and recovering acetone from the acetonitriding hydrolysis waste liquid as claimed in claim 1, characterized in that: the lower cover (27) is provided with a plurality of through holes.
9. The rectification tower for separating and recovering acetone from the acetonitriding hydrolysis waste liquid as claimed in claim 1, characterized in that: the large-diameter section side wall of tower body (1) is equipped with spray tube (17), the upstream end of spray tube (17) is used for linking to each other with the steam vent of acetone azine hydrolysis waste liquid second grade knockout tower, and the low reaches end of spray tube (17) bends 90 downwards, is located the below of tray (23).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021395089.3U CN212818206U (en) | 2020-07-15 | 2020-07-15 | Rectifying tower for separating and recovering acetone in acetone-azine hydrolysis waste liquid |
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| CN202021395089.3U CN212818206U (en) | 2020-07-15 | 2020-07-15 | Rectifying tower for separating and recovering acetone in acetone-azine hydrolysis waste liquid |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113636922A (en) * | 2021-06-16 | 2021-11-12 | 江阴润玛电子材料股份有限公司 | Production process of ultra-clean high-purity acetone |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113636922A (en) * | 2021-06-16 | 2021-11-12 | 江阴润玛电子材料股份有限公司 | Production process of ultra-clean high-purity acetone |
| CN113636922B (en) * | 2021-06-16 | 2023-06-13 | 江阴润玛电子材料股份有限公司 | Production process of ultra-clean high-purity acetone |
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