CN211435129U - Acrylamide aqueous solution concentration system - Google Patents
Acrylamide aqueous solution concentration system Download PDFInfo
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- CN211435129U CN211435129U CN201922278776.0U CN201922278776U CN211435129U CN 211435129 U CN211435129 U CN 211435129U CN 201922278776 U CN201922278776 U CN 201922278776U CN 211435129 U CN211435129 U CN 211435129U
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Abstract
The utility model relates to an acrylamide aqueous solution concentration system, its characterized in that: comprises a solution circulating kettle, a solution circulating pump, a steam heating kettle, a concentration tower, a Roots blower, a gas-liquid separator and a tail gas washing tower; in the utility model, the gas-liquid separator is additionally arranged between the concentration tower and the tail gas washing tower, so that the gas discharged from the tail gas treatment interface at the top end of the concentration tower is separated by the enterprise separator, and part of the brought acrylamide flows back to the solution circulating kettle for concentration, thereby reducing the amount of the acrylamide absorbed and treated in the subsequent tail gas washing tower and improving the yield of the acrylamide in the concentration process; in addition, a steam heating jacket is directly nested on a steam heating pipeline in the steam heating kettle, so that the utilization rate of a heat source is improved, and the waste of energy is reduced.
Description
Technical Field
The utility model relates to an acrylamide production technical field especially relates to an acrylamide aqueous solution concentration system.
Background
Acrylamide is a white crystalline chemical substance and is a raw material for producing polyacrylamide. The polyacrylamide is mainly used in the fields of oil and gas exploitation, papermaking, water treatment, mineral washing, coating, spinning, metallurgy, cement reinforcing agents, super absorbent resin, adhesives, leather retanning agents and the like.
In the production of acrylamide, acrylonitrile is reacted with water at about 20 ℃ by using a biological enzyme catalyst (culture in a strain chamber and production in a fermentation workshop) to generate an acrylamide aqueous solution, and then the acrylamide aqueous solution is subjected to the working procedures of refining, concentration, crystallization, centrifugation, drying and the like to obtain an acrylamide crystal product; when acrylamide aqueous solution is concentrated and concentrated tail gas is treated, a tail gas treatment interface at the top end of a concentration tower is generally directly connected to a tail gas washing tower, so that the problem that the quantity of concentrated finished products is greatly reduced due to the treatment of a large amount of acrylamide in the tail gas washing tower is solved.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide an acrylamide aqueous solution concentration system, can solve the processing that concentration tower lug connection carries out acrylamide on the tail gas washing tower in general acrylamide concentration, the conversion rate is low when leading to acrylamide concentration, has increased the tail gas treatment intensity's of tail gas washing tower problem simultaneously.
In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides an acrylamide aqueous solution concentration system which innovation point lies in: comprises a solution circulating kettle, a solution circulating pump, a steam heating kettle, a concentration tower, a Roots blower, a gas-liquid separator and a tail gas washing tower;
one side edge of the bottom end of the solution circulating kettle is connected to the input end of the solution circulating pump through a pipeline, the other side edge of the bottom end of the solution circulating kettle is connected with a concentrated solution outlet, and the top end of the solution circulating kettle is provided with a solution feeding port and a solution return port;
the output end of the solution circulating pump is connected to a plurality of steam heating kettles which are arranged in parallel through pumping pipelines, and a steam heating pipeline communicated with the pumping pipelines is arranged in each steam heating kettle, so that the solution flowing through the steam heating pipelines is subjected to steam heating; the output end of the steam heating kettle is connected with the side edge of the top end of the concentration tower through a pipeline;
a reflux port is arranged at the bottom end of the concentration tower and is connected to a solution feed back port on the solution circulating kettle through a solution reflux pipeline; the top end of the concentration tower is provided with a tail gas treatment interface; the side edge of the bottom end of the concentration tower is connected to the Roots blower through an air pipe; the Roots blower blows air into the concentration tower to bring water evaporated from the solution into the gas-liquid separator from a tail gas treatment interface at the top end of the concentration tower; a concentrated solution output pipeline is connected to a pipeline connected between the steam heating kettle and the concentration tower;
the side of the gas-liquid separator is connected with a tail gas treatment interface at the top end of the concentration tower through a pipeline, an exhaust port is arranged at the top end of the gas-liquid separator, a liquid return port is arranged at the bottom end of the gas-liquid separator, and the liquid return port is connected to a solution return pipeline at the bottom end of the concentration tower through a hose; an exhaust port at the top end of the gas-liquid separator is connected to the tail gas washing tower through a pipeline;
a tail gas washing liquid pool is arranged in the tail gas washing tower, washing liquid is arranged in the tail gas washing liquid pool, and a vent hole is formed in the top end of the tail gas washing tower; be connected with washing liquid circulating pipe between the side top of tail gas washing tower and the bottom, and washing liquid circulating pipe's bottom intercommunication is on tail gas washing liquid pond, and washing liquid circulating pipe's top is located the tail gas washing tower and is provided with the mouth that sprays, be provided with the washing liquid circulating pump on the washing liquid circulating pipe, the realization sprays the absorption tail gas with the washing liquid pump sending in the tail gas washing liquid pond to the top of tail gas washing tower.
Furthermore, a pipeline for liquid drainage and liquid feeding is externally connected to a washing pool in the tail gas washing tower.
Furthermore, a steam heating jacket is nested on a steam heating pipeline in the steam heating kettle, and the steam heating jacket is connected with a circulating steam heating pipeline.
The utility model has the advantages that:
1) in the utility model, the gas-liquid separator is additionally arranged between the concentration tower and the tail gas washing tower, so that the gas discharged from the tail gas treatment interface at the top end of the concentration tower is separated by the enterprise separator, and part of the brought acrylamide flows back to the solution circulating kettle for concentration, thereby reducing the amount of the acrylamide absorbed and treated in the subsequent tail gas washing tower and improving the yield of the acrylamide in the concentration process; in addition, a steam heating jacket is directly nested on a steam heating pipeline in the steam heating kettle, so that the utilization rate of a heat source is improved, and the waste of energy is reduced.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural diagram of an acrylamide aqueous solution concentration system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the acrylamide aqueous solution concentration system comprises a solution circulating kettle 1, a solution circulating pump 2, a steam heating kettle 3, a concentration tower 4, a roots blower 5, a gas-liquid separator 6 and a tail gas washing tower 7.
One side of the bottom end of the solution circulating kettle 1 is connected with the input end of the solution circulating pump through a pipeline, the other side of the bottom end of the solution circulating kettle 1 is connected with a concentrated solution outlet, and the top end of the solution circulating kettle is provided with a solution feed inlet 11 and a solution feed back port 12.
The output end of the solution circulating pump 2 is connected to a plurality of steam heating kettles 3 which are arranged in parallel through pumping pipelines, and a steam heating pipeline communicated with the pumping pipelines is arranged in each steam heating kettle 3, so that the solution flowing through the steam heating pipelines is subjected to steam heating; the output end of the steam heating kettle 3 is connected with the side edge of the top end of the concentration tower 4 through a pipeline; a steam heating jacket is nested on a steam heating pipeline in the steam heating kettle 3, and the steam heating jacket is connected with a circulating steam heating pipeline 31.
A reflux port is arranged at the bottom end of the concentration tower 4 and is connected to a solution return port 12 on the solution circulating kettle 1 through a solution reflux pipeline 41; the top end of the concentration tower 4 is provided with a tail gas treatment interface; the side edge of the bottom end of the concentration tower 4 is connected with a Roots blower 5 through an air pipe; blowing air into the concentration tower by a Roots blower 5 to bring water evaporated from the solution into a gas-liquid separator 6 from a tail gas treatment interface at the top end of the concentration tower 4; a concentrated solution output pipeline 42 is connected on a pipeline connected between the steam heating kettle 3 and the concentration tower 4.
The side edge of the gas-liquid separator 6 is connected with a tail gas treatment interface at the top end of the concentration tower 4 through a pipeline, an exhaust port is arranged at the top end of the gas-liquid separator 6, a liquid return port is arranged at the bottom end of the gas-liquid separator 6, and the liquid return port is connected to a solution reflux pipeline 41 at the bottom end of the concentration tower 4 through a hose 61; an exhaust port at the top end of the gas-liquid separator 6 is connected to the tail gas washing tower 7 through a pipeline.
A tail gas washing liquid pool is arranged in the tail gas washing tower 7, washing liquid is arranged in the tail gas washing liquid pool, and a vent port is formed in the top end of the tail gas washing tower; a washing liquid circulating pipeline 71 is connected between the top end and the bottom end of the side edge of the tail gas washing tower 7, the bottom end of the washing liquid circulating pipeline 71 is communicated with a tail gas washing liquid pool, the top end of the washing liquid circulating pipeline 71 is positioned in the tail gas washing tower and is provided with a spraying opening, and a washing liquid circulating pump 72 is arranged on the washing liquid circulating pipeline, so that washing liquid in the tail gas washing liquid pool is pumped to the top end of the tail gas washing tower to be sprayed and absorbed with tail gas; a pipeline for liquid drainage and liquid feeding is externally connected to a washing pool in the tail gas washing tower 7.
The utility model discloses a theory of operation is: the method comprises the following steps that an acrylamide aqueous solution is added into a solution circulating kettle through a solution feeding port on the solution circulating kettle, the acrylamide aqueous solution is pumped into a steam heating kettle through a solution circulating pump connected onto the solution circulating kettle, part of moisture in the solution heated by steam enters a concentration kettle in a steam state, wind blown by a Roots blower is in countercurrent contact with the acrylamide solution to transfer heat, the evaporated moisture in the acrylamide solution is taken away from the top of a concentration tower by air and enters a gas-liquid separator, part of the concentrated acrylamide aqueous solution flows back into the solution circulating kettle from the bottom of the concentration tower, the gas-liquid separator separates the water carried by the air from part of acrylamide, the acrylamide flows back, and the amount of the acrylamide absorbed and treated by a tail gas washing tower is reduced; and a washing liquid circulating pump arranged on the tail gas washing tower realizes the spraying absorption of a small amount of acrylamide in the tail gas.
It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (3)
1. An acrylamide aqueous solution concentration system, which is characterized in that: comprises a solution circulating kettle, a solution circulating pump, a steam heating kettle, a concentration tower, a Roots blower, a gas-liquid separator and a tail gas washing tower;
one side edge of the bottom end of the solution circulating kettle is connected to the input end of the solution circulating pump through a pipeline, the other side edge of the bottom end of the solution circulating kettle is connected with a concentrated solution outlet, and the top end of the solution circulating kettle is provided with a solution feeding port and a solution return port;
the output end of the solution circulating pump is connected to a plurality of steam heating kettles which are arranged in parallel through pumping pipelines, and a steam heating pipeline communicated with the pumping pipelines is arranged in each steam heating kettle, so that the solution flowing through the steam heating pipelines is subjected to steam heating; the output end of the steam heating kettle is connected with the side edge of the top end of the concentration tower through a pipeline;
a reflux port is arranged at the bottom end of the concentration tower and is connected to a solution feed back port on the solution circulating kettle through a solution reflux pipeline; the top end of the concentration tower is provided with a tail gas treatment interface; the side edge of the bottom end of the concentration tower is connected to the Roots blower through an air pipe; the Roots blower blows air into the concentration tower to bring water evaporated from the solution into the gas-liquid separator from a tail gas treatment interface at the top end of the concentration tower; a concentrated solution output pipeline is connected to a pipeline connected between the steam heating kettle and the concentration tower;
the side of the gas-liquid separator is connected with a tail gas treatment interface at the top end of the concentration tower through a pipeline, an exhaust port is arranged at the top end of the gas-liquid separator, a liquid return port is arranged at the bottom end of the gas-liquid separator, and the liquid return port is connected to a solution return pipeline at the bottom end of the concentration tower through a hose; an exhaust port at the top end of the gas-liquid separator is connected to the tail gas washing tower through a pipeline;
a tail gas washing liquid pool is arranged in the tail gas washing tower, washing liquid is arranged in the tail gas washing liquid pool, and a vent hole is formed in the top end of the tail gas washing tower; be connected with washing liquid circulating pipe between the side top of tail gas washing tower and the bottom, and washing liquid circulating pipe's bottom intercommunication is on tail gas washing liquid pond, and washing liquid circulating pipe's top is located the tail gas washing tower and is provided with the mouth that sprays, be provided with the washing liquid circulating pump on the washing liquid circulating pipe, the realization sprays the absorption tail gas with the washing liquid pump sending in the tail gas washing liquid pond to the top of tail gas washing tower.
2. The aqueous acrylamide solution concentrating system according to claim 1, wherein: and a pipeline for liquid drainage and liquid feeding is externally connected to a washing pool in the tail gas washing tower.
3. The aqueous acrylamide solution concentrating system according to claim 1, wherein: a steam heating jacket is nested on a steam heating pipeline in the steam heating kettle, and the steam heating jacket is connected with a circulating steam heating pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922278776.0U CN211435129U (en) | 2019-12-18 | 2019-12-18 | Acrylamide aqueous solution concentration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922278776.0U CN211435129U (en) | 2019-12-18 | 2019-12-18 | Acrylamide aqueous solution concentration system |
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| Publication Number | Publication Date |
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| CN211435129U true CN211435129U (en) | 2020-09-08 |
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| CN201922278776.0U Active CN211435129U (en) | 2019-12-18 | 2019-12-18 | Acrylamide aqueous solution concentration system |
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| CN (1) | CN211435129U (en) |
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