CN211435604U - Acrylamide crystal grain drying tail gas treatment system - Google Patents
Acrylamide crystal grain drying tail gas treatment system Download PDFInfo
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- CN211435604U CN211435604U CN201922278761.4U CN201922278761U CN211435604U CN 211435604 U CN211435604 U CN 211435604U CN 201922278761 U CN201922278761 U CN 201922278761U CN 211435604 U CN211435604 U CN 211435604U
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- tail gas
- washing liquid
- acrylamide
- washing tower
- cyclone separator
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Abstract
The utility model relates to a dry tail gas processing system of acrylamide crystalline grain, its characterized in that: comprises a cyclone separator group, a spiral conveying auger, a tail gas washing tower, a washing liquid receiving tank and a circulating pump group; in the utility model, the cyclone separator group and the spiral conveying auger are arranged at the tail gas outlet, so that most acrylamide crystal grains carried by hot gas during drying are separated and recovered, a large amount of acrylamide crystal grains are prevented from entering the tail gas washing tower, and the treatment capacity of the acrylamide in the tail gas washing tower is reduced; the treatment efficiency of acrylamide in the tail gas washing tower is improved, and the waste of acrylamide is reduced; in addition, the washing receives to set up the sample connection on the cistern, guarantees that the lotion receives the solution concentration in the cistern to be no more than 5%, and the accessible recovery tube discharges to through adding changing of the pipeline of washing liquid, guaranteed the absorptive effect of tail gas washing tower and absorptive security.
Description
Technical Field
The utility model relates to an acrylamide production technical field especially relates to a dry tail gas processing system of acrylamide crystalline grain.
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; in the drying process of acrylamide, after acrylamide crystals are dried by hot air in a vibrating fluidized bed dryer, the hot air can carry part of the acrylamide crystals to enter a tail gas system to cause product waste, and the workload of tail gas treatment is increased.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a dry tail gas processing system of acrylamide crystalline grain can improve the efficiency of dry back tail gas treatment of acrylamide crystalline grain, reduces the work load of tail gas treatment.
In order to solve the technical problem, the utility model adopts the technical scheme that: the utility model provides an acrylamide crystal grain drying tail gas processing system which innovation point lies in: comprises a cyclone separator group, a spiral conveying auger, a tail gas washing tower, a washing liquid receiving tank and a circulating pump group;
the cyclone separator group comprises a plurality of cyclone separator units, a tail gas inlet is formed in the side edge of each cyclone separator unit, the bottom ends of the cyclone separator units are connected to the bolt conveying auger, and acrylamide crystal grains separated from the tail gas by the cyclone separator group are conveyed and recovered through conveying of the screw conveying auger; a discharge hole for acrylamide crystal grains is formed in the bottom of one end of the spiral conveying auger; the top end of the cyclone separator unit is connected to an induced draft fan through a pipeline, and the output end of the induced draft fan is connected to the tail gas washing tower;
a washing liquid spraying inlet is formed in the side edge of the top end of the tail gas washing tower, an air inlet connected with a draught fan is formed in one side edge of the bottom end of the tail gas washing tower, and the other side edge of the bottom end of the tail gas washing tower is connected to a washing liquid receiving groove through a pipeline; a spray pipe communicated with a washing liquid spray inlet is arranged in the tail gas washing tower, and a spray port is arranged on the spray pipe to realize spray absorption from top to bottom in the tail gas washing tower; the top end of the tail gas washing tower is provided with an emptying port;
the top end of the washing liquid receiving groove is connected with the tail gas washing tower through a pipeline, one side edge of the bottom end of the washing liquid receiving groove is connected to a recovery groove through a recovery pipeline, and a washing liquid receiving groove filter is arranged on the recovery pipeline; the washing liquid receives the bottom opposite side in groove and passes through pipe connection on circulating pump group, the output of circulating pump group passes through the pipe connection and sprays the entry at the washing liquid of tail gas washing tower top side, sprays in getting into the tail gas washing tower through circulating pump group extraction washing liquid in the groove.
Furthermore, a pipeline for adding washing liquid is arranged at the top end of the washing liquid receiving groove, and the washing liquid is desalted water; the washing liquid receiving tank is also provided with a washing liquid receiving tank solution concentration detection sampling port to ensure that the concentration of the detected acrylamide solution is less than or equal to 5 percent after sampling.
Further, the circulating pump group includes a pair of independently and parallelly driven circulating pump units.
The utility model has the advantages that:
1) in the utility model, the cyclone separator group and the spiral conveying auger are arranged at the tail gas outlet, so that most acrylamide crystal grains carried by hot gas during drying are separated and recovered, a large amount of acrylamide crystal grains are prevented from entering the tail gas washing tower, and the treatment capacity of the acrylamide in the tail gas washing tower is reduced; the treatment efficiency of acrylamide in the tail gas washing tower is improved, and the waste of acrylamide is reduced; in addition, the washing receives to set up the sample connection on the cistern, guarantees that the lotion receives the solution concentration in the cistern to be no more than 5%, and the accessible recovery tube discharges to through adding changing of the pipeline of washing liquid, guaranteed the absorptive effect of tail gas washing tower and absorptive security.
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 a system for processing acrylamide crystal grain drying tail gas 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.
The acrylamide crystal grain drying tail gas treatment system shown in figure 1 comprises a cyclone separator group 1, a spiral conveying auger 2, a tail gas washing tower 3, a washing liquid receiving tank 4 and a circulating pump group 5.
The cyclone separator group 1 comprises a plurality of cyclone separator units 11, a tail gas inlet is formed in the side edge of each cyclone separator unit 11, the bottom end of each cyclone separator unit 11 is connected to the bolt conveying auger 2, and acrylamide crystal grains separated from the tail gas by the cyclone separator group 1 are conveyed and recovered through the conveying of the bolt conveying auger 2; a discharge port 21 for acrylamide crystal grains is arranged at the bottom of one end of the spiral conveying auger 2; the top end of the cyclone separator unit 11 is connected to an induced draft fan 12 through a pipeline, and the output end of the induced draft fan is connected to the tail gas washing tower 3.
A washing liquid spraying inlet is formed in the side edge of the top end of the tail gas washing tower 3, an air inlet connected with a draught fan 12 is formed in one side edge of the bottom end of the tail gas washing tower 3, and the other side edge of the bottom end of the tail gas washing tower 3 is connected to a washing liquid receiving tank 4 through a pipeline; a spray pipe 31 communicated with a washing liquid spray inlet is arranged in the tail gas washing tower 3, and a spray port is arranged on the spray pipe 31 to realize the spray absorption from top to bottom in the tail gas washing tower 3; the top end of the off-gas scrubber 3 is provided with a drain 32.
The top end of the washing liquid receiving tank 4 is connected with the tail gas washing tower 3 through a pipeline, one side edge of the bottom end of the washing liquid receiving tank 4 is connected with a recovery tank through a recovery pipeline, and a washing liquid receiving tank filter 42 is arranged on the recovery pipeline 41; the other side of the bottom end of the washing liquid receiving groove 4 is connected to a circulating pump set 5 through a pipeline, and the circulating pump set 5 comprises a pair of independent and parallel driven circulating pump units; the output end of the circulating pump unit 5 is connected to a washing liquid spraying inlet on the side edge of the top end of the tail gas washing tower 3 through a pipeline, and washing liquid in the washing liquid receiving tank 4 is extracted through the circulating pump unit 5 and enters the tail gas washing tower 3 for spraying; a pipeline 43 for adding washing liquid is arranged at the top end of the washing liquid receiving tank 4, and the washing liquid is desalted water; the washing liquid receiving tank is also provided with a washing liquid receiving tank 4 solution concentration detection sampling port 44 to ensure that the concentration of the detected acrylamide solution is less than or equal to 5 percent after sampling.
The utility model discloses a theory of operation is: the hot air carries water vapor and part of acrylamide crystal grains after drying the acrylamide crystal grains and enters a cyclone separator set, the cyclone separator set realizes separation of most of the acrylamide crystal grains from the hot air, then the air carrying the water vapor and a small amount of the acrylamide crystal grains enters a tail gas washing tower, due to the principle that the acrylamide is very soluble in water, the acrylamide in tail gas is absorbed in a washing liquid spraying mode, and washing liquid circulation between a washing liquid receiving tank and the tail gas washing tower is realized through a circulating pump set; and the concentration of acrylamide in the washing liquid receiving tank is ensured not to exceed 5%, and the washing liquid is replaced under the exceeding condition so as to ensure the absorption efficiency and safety of the tail gas absorption tower.
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 crystal grain drying tail gas treatment system is characterized in that: comprises a cyclone separator group, a spiral conveying auger, a tail gas washing tower, a washing liquid receiving tank and a circulating pump group;
the cyclone separator group comprises a plurality of cyclone separator units, a tail gas inlet is formed in the side edge of each cyclone separator unit, the bottom ends of the cyclone separator units are connected to the bolt conveying auger, and acrylamide crystal grains separated from the tail gas by the cyclone separator group are conveyed and recovered through conveying of the screw conveying auger; a discharge hole for acrylamide crystal grains is formed in the bottom of one end of the spiral conveying auger; the top end of the cyclone separator unit is connected to an induced draft fan through a pipeline, and the output end of the induced draft fan is connected to the tail gas washing tower;
a washing liquid spraying inlet is formed in the side edge of the top end of the tail gas washing tower, an air inlet connected with a draught fan is formed in one side edge of the bottom end of the tail gas washing tower, and the other side edge of the bottom end of the tail gas washing tower is connected to a washing liquid receiving groove through a pipeline; a spray pipe communicated with a washing liquid spray inlet is arranged in the tail gas washing tower, and a spray port is arranged on the spray pipe to realize spray absorption from top to bottom in the tail gas washing tower; the top end of the tail gas washing tower is provided with an emptying port;
the top end of the washing liquid receiving groove is connected with the tail gas washing tower through a pipeline, one side edge of the bottom end of the washing liquid receiving groove is connected to a recovery groove through a recovery pipeline, and a washing liquid receiving groove filter is arranged on the recovery pipeline; the washing liquid receives the bottom opposite side in groove and passes through pipe connection on circulating pump group, the output of circulating pump group passes through the pipe connection and sprays the entry at the washing liquid of tail gas washing tower top side, sprays in getting into the tail gas washing tower through circulating pump group extraction washing liquid in the groove.
2. The system according to claim 1, wherein the system comprises: a pipeline for adding the washing liquid is arranged at the top end of the washing liquid receiving groove, and the washing liquid is desalted water; the washing liquid receiving tank is also provided with a washing liquid receiving tank solution concentration detection sampling port to ensure that the concentration of the detected acrylamide solution is less than or equal to 5 percent after sampling.
3. The system according to claim 1, wherein the system comprises: the circulating pump group includes a pair of independently and parallel driven circulating pump units.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922278761.4U CN211435604U (en) | 2019-12-18 | 2019-12-18 | Acrylamide crystal grain drying tail gas treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922278761.4U CN211435604U (en) | 2019-12-18 | 2019-12-18 | Acrylamide crystal grain drying tail gas treatment system |
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| Publication Number | Publication Date |
|---|---|
| CN211435604U true CN211435604U (en) | 2020-09-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922278761.4U Active CN211435604U (en) | 2019-12-18 | 2019-12-18 | Acrylamide crystal grain drying tail gas treatment system |
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| CN (1) | CN211435604U (en) |
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- 2019-12-18 CN CN201922278761.4U patent/CN211435604U/en active Active
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