CN210584052U - Multifunctional spiral plate dividing and shrinking device - Google Patents
Multifunctional spiral plate dividing and shrinking device Download PDFInfo
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- CN210584052U CN210584052U CN201921141638.1U CN201921141638U CN210584052U CN 210584052 U CN210584052 U CN 210584052U CN 201921141638 U CN201921141638 U CN 201921141638U CN 210584052 U CN210584052 U CN 210584052U
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Abstract
The utility model relates to a multifunctional spiral plate separate-contracting device, which comprises a separate-contracting device cylinder body, and a liquid baffle plate, a conical spiral separation device, a spiral plate heat exchange device and a liquid collecting device which are arranged in the separate-contracting device cylinder body from top to bottom in sequence; the spiral plate heat exchange device is composed of a first rolling plate, a second rolling plate, a connecting reinforcing plate, a side blocking plate, an end blocking plate, a circulating water upper water opening and a circulating water outlet, and a spiral circulating water channel and a mixed steam channel communicated with the upper portion and the lower portion of the inner space of the barrel body of the partial condenser are formed together. The bulges have the functions of self-supporting, turbulence, condensation, liquid collection and the like, so that the heat exchange area is increased, and the heat transfer efficiency is improved; through multiple gas-liquid separation processes, condensate is trapped to a greater extent, and water vapor is prevented from being taken away to influence the subsequent process.
Description
Technical Field
The utility model relates to a dephlegmator on the top of an ammonia still especially relates to a multi-functional spiral plate dephlegmator.
Background
At present, a vertical dephlegmator is generally adopted in an ammonia distillation process in the coking industry to condense and cool mixed steam coming out of the top of an ammonia distillation tower, high-boiling-point components in the mixed steam are condensed into a liquid phase in the process, low-boiling-point components are ammonia gas, and the ammonia gas is condensed by an ammonia condensation cooler and then is sent to a follow-up unit. The heat exchanger in the vertical separator usually adopts a tube type heat exchanger, the mixed steam from the top of the ammonia still flows through the tube side, and the circulating water flows through the shell side. The heat transfer efficiency of the tube type heat exchanger is relatively low, the flow speed of mixed steam is high, and therefore entrainment is easy to generate, namely, moisture condensed down is entrained in ammonia gas, and a flooding phenomenon can occur in severe cases.
Disclosure of Invention
The utility model provides a multifunctional spiral plate dephlegmator, wherein an octagonal cloud-shaped bulge and a spiral line bulge which have the functions of self-supporting, turbulence, condensation, liquid collection and the like are arranged in a spiral plate heat exchange device, thereby increasing the heat exchange area and improving the heat transfer efficiency; through multiple gas-liquid separation processes, condensate is trapped to a greater extent, and water vapor is prevented from being taken away to influence the subsequent process.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a multifunctional spiral plate divider; the device comprises a dephlegmator cylinder, and a liquid baffle plate, a conical spiral separation device, a spiral plate heat exchange device and a liquid collecting device which are sequentially arranged in the dephlegmator cylinder from top to bottom; the top of the barrel of the fractional condenser is provided with an ammonia gas outlet, and the bottom of the barrel is connected with a mixed steam outlet at the top of the ammonia still; the spiral plate heat exchange device consists of a first rolling plate, a second rolling plate, a connecting reinforcing plate, an edge blocking plate, an end blocking plate, a circulating water upper water gap and a circulating water outlet; the first rolling plate and the second rolling plate are uniformly wound in the barrel of the separate condenser at intervals to form double spirals; the double-helix body is provided with 2 paths of helical spaces, the axis of the double-helix body is superposed with the axis of the barrel body of the partial reducer, an annular gap is reserved between the outer side of the double-helix body and the barrel body of the partial reducer, a cylindrical space is reserved on the inner side of the double-helix body, and the middle part of the cylindrical space is provided with a connecting reinforcing plate to divide the cylindrical space into 2 semi-cylindrical spaces; the top and the bottom of one path of spiral space in the double-spiral body are sealed by a side part blocking plate to form a spiral circulating water channel, one end opening at the inner side of the circulating water channel is communicated with one semi-cylindrical space in the double-spiral body, a circulating water upper water gap is arranged at the bottom of the semi-cylindrical space, the other end opening at the outer side of the circulating water channel is communicated with an annular gap between the barrel body of the partial condenser and the double-spiral body, and a plurality of circulating water outlets are arranged on the barrel body of the partial condenser in the height direction; an opening at one end of the inner side of the other spiral space in the double-spiral body is sealed by a connecting reinforcing plate, an opening at the other end of the outer side of the other spiral space in the double-spiral body is sealed by an end part blocking plate, a mixed steam channel which is communicated with the upper part and the lower part of the inner space of the cylinder body of the partial reducer is formed, and a plurality of octagonal cloud-shaped bulges are distributed on a rolling plate I at one side of the circulating water; a plurality of parallel spiral line bulges are arranged on the rolling plate II on one side of the mixed steam channel, and a plurality of octagonal cloud-shaped bulges are distributed among the spiral line bulges; the octagonal cloud-shaped bulges are used as a self-supporting structure and a turbulence structure, and the spiral line bulges are used as a condensation and liquid collection structure; the disc and the liquid collecting device are respectively provided with a condensate outlet which is connected with an external condensate pipeline.
The openings at one end of the inner side of the 2-way spiral space of the double-spiral body are separated by 180 degrees, and the openings at the other end of the outer side of the double-spiral body are also separated by 180 degrees.
The conical spiral separation device consists of a conical bottom plate, a disc and an outlet plate, wherein the conical top of the conical bottom plate is arranged downwards, the disc is arranged right below the conical top, and the middle part of the conical bottom plate is provided with a condensate outflow port; 2 airflow outlets are arranged on the conical bottom plate at a distance of 180 degrees, and the outlet plate is arranged on the airflow outlets and forms a rotary airflow channel together with the conical bottom plate.
The height of the octagonal cloud-shaped bulges and the height of the spiral line bulges are equal to the distance between the first rolling plate and the second rolling plate.
The plate rolling device is characterized in that the plate rolling I and the plate rolling II are metal sheets, the octagonal cloud-shaped protrusions are formed by rectangular protrusions and 8 semicircular protrusions symmetrically arranged on the peripheries of the rectangular protrusions, and the rectangular protrusions and the semicircular protrusions are directly pressed and formed on the metal sheets.
The included angle between the tangent direction of the spiral line bulge and the horizontal direction is 30-60 degrees.
The octagonal cloud-shaped bulges are arranged on the first rolling plate and the second rolling plate according to multiple rows and multiple columns, and the octagonal cloud-shaped bulges in 2 adjacent rows and 2 adjacent columns are arranged in a staggered mode.
The liquid baffle is an annular metal plate, the outer side of the liquid baffle is fixedly connected with the inner wall of the barrel body of the partial shrinkage device, and the inner side of the liquid baffle inclines towards the inner lower part of the barrel body of the partial shrinkage device.
The liquid collecting device comprises a liquid collecting plate and a plurality of air lifting caps arranged on the liquid collecting plate, and each air lifting cap consists of a cylinder section and a conical sealing head arranged above the cylinder section; and a liquid collecting groove is formed in one side of the liquid collecting plate, and a condensate outlet is formed in the barrel of the partial condenser outside the liquid collecting groove.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the spiral plate heat exchange device can improve the flow velocity of circulating water and the heat transfer coefficient of a water side;
2) the octagonal cloud-shaped bulges can greatly increase the heat transfer area, and the octagonal cloud-shaped bulges in 2 adjacent rows and 2 adjacent columns are arranged in a staggered manner and can be impacted with mixed steam for multiple times, so that the change of a fluid boundary layer is facilitated, the heat transfer efficiency is improved, and the gas-liquid separation effect is enhanced;
3) the mixed steam makes ascending motion of a spiral track among a plurality of sections of spiral airflow ascending channels formed by the spiral line bulges, so that the flow path is prolonged, and the flow area is increased; condensate generated by cooling the mixed steam flows out downwards along the spiral line protrusion, and the rest gas continuously flows upwards to transfer heat;
4) the mixed steam is subjected to three gas-liquid separation processes, so that the entrainment of water vapor is reduced, the condensate is trapped to a greater extent, and the influence of the entrainment of the water vapor on the subsequent process is avoided;
5) the liquid collecting device is provided with a plurality of air lifting caps, so that air can be uniformly distributed, and the condition that the mixed steam is not uniformly distributed when entering the spiral plate heat exchange device is avoided;
6) the octagonal cloud-shaped bulges and the spiral line bulges can play a self-supporting role on the double-layer channel, so that the double-layer channel can bear larger pressure; the first rolling plate and the second rolling plate are made of metal sheets, and the octagonal cloud-shaped bulges and the spiral line bulges are formed through punching, so that the cost is reduced.
Drawings
Fig. 1 is a front view of the multi-functional spiral plate splitter of the present invention.
Fig. 2 is a view a-a in fig. 1.
Fig. 3 is a view B-B in fig. 2.
Fig. 4 is a schematic structural diagram of the connection reinforcing plate of the present invention.
Fig. 5 is a schematic plane development view of the first rolling plate according to the present invention.
Fig. 6 is a schematic plane development view of the second rolling plate of the present invention.
Fig. 7 is a schematic structural diagram of the double-layer channel of the present invention.
Fig. 8 is a schematic view of the rotating airflow channel of the present invention.
In the figure: 1. the system comprises a flange 2, a barrel body 3 of a dephlegmator, a liquid collecting device 4, a circulating water upper water gap 5, a supporting beam 6, a spiral plate heat exchange device 7, a circulating water outlet 8, a conical rotary separation device 9, a liquid baffle plate 10, an end socket 11, an ammonia gas outlet 12, a rotary air flow channel 13, a condensate pipeline 14, a conical bottom plate 15, a rolling plate I16, a rolling plate II 17, an end blocking plate 18, a connecting reinforcing plate 19, an octagonal cloud-shaped bulge 20, a spiral line bulge 21, a disc 22, an edge blocking plate 23, a circulating water channel 24, a mixed steam channel 25, an outlet plate 25, a circulating water inlet
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1, the utility model relates to a multifunctional spiral plate splitter; the device comprises a dephlegmator cylinder 2, and a liquid baffle plate 9, a conical spiral separation device 8, a spiral plate heat exchange device 6 and a liquid collecting device 3 which are sequentially arranged in the dephlegmator cylinder 2 from top to bottom; the top of the barrel body 2 of the fractional condenser is provided with an ammonia gas outlet 11, and the bottom of the barrel body of the fractional condenser is provided with a flange 1 for connecting with a mixed steam outlet at the top of an ammonia still; as shown in fig. 2, the spiral plate heat exchange device 6 is composed of a first rolling plate 15, a second rolling plate 16, a connecting reinforcing plate 18, an edge blocking plate 22, an end blocking plate 17, a circulating water inlet 4 and a circulating water outlet 7; the first rolling plate 15 and the second rolling plate 16 are uniformly wound in the barrel 2 of the partial condenser at intervals to form double spirals; the double-helix body is provided with 2 paths of helical spaces, the axis of the double-helix body is superposed with the axis of the partial reducer cylinder body 2, an annular gap is reserved between the outer side of the double-helix body and the partial reducer cylinder body 2, a cylindrical space is reserved on the inner side of the double-helix body, and the middle part of the cylindrical space is provided with a connecting reinforcing plate 18 to divide the cylindrical space into 2 semi-cylindrical spaces; the top and the bottom of one path of spiral space in the double spiral bodies are sealed by a side part blocking plate 22 (as shown in figure 3) to form a spiral circulating water channel 23, one end opening of the inner side of the circulating water channel 23 is communicated with one semi-cylindrical space, a circulating water inlet 4 is arranged at the bottom of the semi-cylindrical space, the other end opening of the outer side of the circulating water channel 23 is communicated with an annular gap between the partial reducer cylinder body 2 and the double spiral bodies, and a plurality of circulating water outlets 7 are arranged on the partial reducer cylinder body 2 along the height direction; an opening at one end of the inner side of the other spiral space in the double spiral body is sealed by a connecting reinforcing plate 18, an opening at the other end of the outer side is sealed by an end part blocking plate 17, a mixed steam channel 24 which is communicated with the upper part and the lower part of the inner space of the barrel body 2 of the partial reducer is formed, and a plurality of octagonal cloud-shaped bulges 19 are distributed on a rolling plate one 15 at one side of a circulating water channel 23; a plurality of parallel spiral line bulges 20 are arranged on the second rolling plate 16 on one side of the mixed steam channel 24, and a plurality of octagonal cloud-shaped bulges 19 are distributed among the spiral line bulges 20; the octagonal cloud-shaped bulges 19 are used as a self-supporting structure and a turbulence structure, and the spiral line bulges are used as a condensation and liquid collection structure; the disc 21 and the liquid collecting device 3 are respectively provided with a condensate outlet which is connected with an external condensate pipeline.
The openings at one end of the inner side of the 2-way spiral space of the double-spiral body are separated by 180 degrees, and the openings at the other end of the outer side of the double-spiral body are also separated by 180 degrees.
The conical spiral separation device 8 consists of a conical bottom plate 14, a disc 21 and an outlet plate 25, wherein the conical top of the conical bottom plate 14 is arranged downwards, the disc 21 is arranged right below the conical top, and the middle part of the conical bottom plate 14 is provided with a condensate outflow port; the conical bottom plate 14 is provided with 2 airflow outlets at 180 degrees, and the outlet plate 25 is arranged on the airflow outlets and forms a rotary airflow channel 21 together with the conical bottom plate 14.
The heights of the octagonal cloud-shaped bulges 19 and the spiral line bulges 20 are equal to the distance between the first rolling plate and the second rolling plate.
The first rolling plate 15 and the second rolling plate 16 are metal sheets, the octagonal cloud-shaped protrusions 19 are composed of rectangular protrusions and 8 semicircular protrusions symmetrically arranged on the peripheries of the rectangular protrusions, and the rectangular protrusions and the semicircular protrusions are directly pressed and formed on the metal sheets.
The included angle between the tangential direction of the spiral line bulge 20 and the horizontal direction is 30-60 degrees.
The octagonal cloud-shaped bulges 19 are arranged on the first rolling plate 15 and the second rolling plate 16 according to multiple rows and multiple columns, and the octagonal cloud-shaped bulges 19 in 2 adjacent rows and 2 adjacent columns are arranged in a staggered mode.
The liquid baffle plate 9 is an annular metal plate, the outer side of the liquid baffle plate is fixedly connected with the inner wall of the cylindrical body 2 of the partial condenser, and the inner side of the liquid baffle plate inclines towards the inner lower part of the cylindrical body 2 of the partial condenser.
The liquid collecting device 3 comprises a liquid collecting plate and a plurality of air lifting caps arranged on the liquid collecting plate, and each air lifting cap consists of a cylinder section and a conical sealing head arranged above the cylinder section; a liquid collecting groove is arranged on one side of the liquid collecting plate, and a condensate outlet is arranged on the cylindrical body 2 of the partial condenser outside the liquid collecting groove.
A working process of the multifunctional spiral plate dividing and shrinking device is as follows:
(1) the flow process of the circulating water: circulating water enters the center of the spiral plate heat exchange device 6 from the circulating water upper water gap, flows at a high speed along the spiral motion track of the circulating water channel 23, passes through the octagonal cloud-shaped bulges 19 in the circulating water channel 23 and the grooves corresponding to the octagonal cloud-shaped bulges 19 and the spiral line bulges 20 in the mixed steam channel 24, and effectively changes the turbulence degree of the circulating water; in the circulating water channel 23, circulating water and mixed steam in the mixed steam channel 24 fully exchange heat, and circulating water after heat exchange flows out of the circulating water channel 23 and flows into an annular gap between the barrel 2 of the partial condenser and the double spirals; according to different heat exchange areas, circulating water flows out of the circulating water outlet 7 with the corresponding height, so that the water level in the circulating water channel 23 is adjusted;
(2) and (3) a temperature reduction flowing process of the mixed steam: mixed steam escaping from the top of the ammonia still enters the barrel 2 of the dephlegmator from the bottom, and enters the spiral plate heat exchange device 6 for heat exchange after being uniformly distributed by a plurality of gas lifting caps in the liquid collecting device 3; the mixed steam enters the mixed steam channel 24 from bottom to top and is divided into a plurality of air flows, each air flow moves upwards along a spiral ascending channel formed by 2 adjacent spiral line bulges 20 and collides with the octagonal cloud-shaped bulges 19 and the grooves of the octagonal cloud-shaped bulges 19 in the corresponding circulating water channel 23 in the ascending process, the air flow speed is changed rapidly and is fully contacted with the surface of the mixed steam channel 24, the heat transfer area is increased, and primary gas-liquid separation is realized; the separated condensate flows to the lower liquid collecting device 3 along the spiral line bulges 20; the mixed steam continuously collides, transfers heat and condenses between the adjacent 2 spiral protrusions 20;
after the mixed steam exits the spiral plate heat exchange device 6, the mixed steam collides with the conical bottom plate 14 in the upward movement process, and the entrained condensate flows into the disc 21 along the conical bottom plate 14 under the action of collision and gravity, so that secondary gas-liquid separation is realized; condensate collected by the disc 21 is discharged into a condensate pipeline and is sent to the top of the ammonia still to be uniformly distributed and refluxed;
the mixed steam enters the upper space through the rotation of the rotating airflow channel 12 on the conical bottom plate 14, and entrained liquid drops are thrown onto the barrel body 2 of the partial condenser and flow downwards along the inner wall and are collected in a lower disc 21; the mixed steam collides with the liquid baffle plate 9 again in the upward movement process, most of the rest liquid drops and mist are captured, and third gas-liquid separation is realized; and the dry ammonia gas after the three gas-liquid separation processes is discharged from an ammonia gas outlet 11 at the top of the barrel 2 of the dephlegmator.
The utility model relates to a multi-functional spiral plate dephlegmator adopts the spiral plate heat exchange device 6 with the octagonal cloud-shaped bulges 19 and the spiral line bulges 20 which have the functions of self-supporting, turbulence, condensation, liquid collection and the like, compared with the conventional tube type heat exchanger, the heat exchange area and the heat transfer efficiency are greatly increased, and the gas-liquid impact separation effect is promoted; this internal gas-liquid separation and the liquid collecting device that still is equipped with of dephlegmator can effectively separate and collect the liquid under the condensation, avoids the liquid under the condensation to be carried by the repetition.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (9)
1. A multifunctional spiral plate divider; the device is characterized by comprising a dephlegmator cylinder, and a liquid baffle plate, a conical spiral separation device, a spiral plate heat exchange device and a liquid collecting device which are sequentially arranged in the dephlegmator cylinder from top to bottom; the top of the barrel of the fractional condenser is provided with an ammonia gas outlet, and the bottom of the barrel is connected with a mixed steam outlet at the top of the ammonia still; the spiral plate heat exchange device consists of a first rolling plate, a second rolling plate, a connecting reinforcing plate, an edge blocking plate, an end blocking plate, a circulating water upper water gap and a circulating water outlet; the first rolling plate and the second rolling plate are uniformly wound in the barrel of the separate condenser at intervals to form double spirals; the double-helix body is provided with 2 paths of helical spaces, the axis of the double-helix body is superposed with the axis of the barrel body of the partial reducer, an annular gap is reserved between the outer side of the double-helix body and the barrel body of the partial reducer, a cylindrical space is reserved on the inner side of the double-helix body, a connecting reinforcing plate is arranged in the middle of the cylindrical space to divide the cylindrical space into 2 semi-cylindrical spaces, and a plurality of through holes are formed in the connecting reinforcing plate; the top and the bottom of one path of spiral space in the double-spiral body are sealed by a side part blocking plate to form a spiral circulating water channel, one end opening at the inner side of the circulating water channel is communicated with one semi-cylindrical space in the double-spiral body, a circulating water upper water gap is arranged at the bottom of the semi-cylindrical space, the other end opening at the outer side of the circulating water channel is communicated with an annular gap between the barrel body of the partial condenser and the double-spiral body, and a plurality of circulating water outlets are arranged on the barrel body of the partial condenser in the height direction; an opening at one end of the inner side of the other path of spiral space in the double-spiral body is sealed by a connecting reinforcing plate, and an opening at the other end of the outer side of the double-spiral body is sealed by an end part blocking plate to form a mixed steam channel which is communicated with the inner space of the cylinder body of the partial condenser up and down; a plurality of octagonal cloud-shaped bulges are distributed on the rolling plate I on one side of the circulating water channel; a plurality of parallel spiral line bulges are arranged on the rolling plate II on one side of the mixed steam channel, and a plurality of octagonal cloud-shaped bulges are distributed among the spiral line bulges; the octagonal cloud-shaped bulges are used as a self-supporting structure and a turbulence structure, and the spiral line bulges are used as a condensation and liquid collection structure; and a disc is arranged in the conical spiral separation device, and the disc and the liquid collecting device are respectively provided with a condensate outlet connected with an external condensate pipeline.
2. A multi-functional spiral plate splitter according to claim 1, wherein the openings at the inner end of the 2-way spiral space of the double spiral body are 180 ° apart, and the openings at the outer end are also 180 ° apart.
3. The multi-functional spiral plate splitter of claim 1, wherein the conical spiral separation device comprises a conical bottom plate, a circular disc and an outlet plate, wherein the conical top of the conical bottom plate is arranged downwards, the circular disc is arranged right below the conical top, and a condensate outlet is formed in the middle of the conical bottom plate; 2 airflow outlets are arranged on the conical bottom plate at a distance of 180 degrees, and the outlet plate is arranged on the airflow outlets and forms a rotary airflow channel together with the conical bottom plate.
4. The multi-functional spiral plate decondensor of claim 1, wherein the height of the octagonal cloud-shaped protrusions and the spiral protrusions is equal to the distance between the first rolled plate and the second rolled plate.
5. The multi-functional spiral plate shrinker of claim 1 or 4, wherein the rolled plate one and the rolled plate two are metal sheets, the octagonal cloud-shaped protrusions are composed of rectangular protrusions and 8 semicircular protrusions symmetrically arranged on the periphery of the rectangular protrusions, and the rectangular protrusions and the semicircular protrusions are directly pressed and formed on the metal sheets.
6. A multi-functional spiral plate splitter as claimed in claim 1, wherein the included angle between the tangential direction of the spiral protrusions and the horizontal direction is 30 ° to 60 °.
7. The multi-functional spiral plate reduction gear according to claim 1, wherein the octagonal cloud-shaped protrusions are arranged in a plurality of rows and columns on the first rolling plate and the second rolling plate, and the octagonal cloud-shaped protrusions in 2 adjacent rows and 2 adjacent columns are staggered.
8. The multi-functional spiral plate reduction gear according to claim 1, wherein said liquid baffle is a circular metal plate, and the outer side of the liquid baffle is fixedly connected with the inner wall of the cylinder of the reduction gear, and the inner side of the liquid baffle is inclined towards the inner lower part of the cylinder of the reduction gear.
9. The multifunctional spiral plate dephlegmator as claimed in claim 1, wherein the liquid collecting device comprises a liquid collecting plate and a plurality of air lifting caps arranged on the liquid collecting plate, and each air lifting cap comprises a barrel section and a conical sealing head arranged above the barrel section; and a liquid collecting groove is formed in one side of the liquid collecting plate, and a condensate outlet is formed in the barrel of the partial condenser outside the liquid collecting groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921141638.1U CN210584052U (en) | 2019-07-19 | 2019-07-19 | Multifunctional spiral plate dividing and shrinking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921141638.1U CN210584052U (en) | 2019-07-19 | 2019-07-19 | Multifunctional spiral plate dividing and shrinking device |
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| Publication Number | Publication Date |
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| CN210584052U true CN210584052U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921141638.1U Withdrawn - After Issue CN210584052U (en) | 2019-07-19 | 2019-07-19 | Multifunctional spiral plate dividing and shrinking device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110227301A (en) * | 2019-07-19 | 2019-09-13 | 中冶焦耐(大连)工程技术有限公司 | A kind of multifunctional nut rotating plate dephlegmator and its working method |
-
2019
- 2019-07-19 CN CN201921141638.1U patent/CN210584052U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110227301A (en) * | 2019-07-19 | 2019-09-13 | 中冶焦耐(大连)工程技术有限公司 | A kind of multifunctional nut rotating plate dephlegmator and its working method |
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