CN217369612U - Material adhesion solving and automatic cleaning system of reaction kettle - Google Patents
Material adhesion solving and automatic cleaning system of reaction kettle Download PDFInfo
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- CN217369612U CN217369612U CN202221204992.6U CN202221204992U CN217369612U CN 217369612 U CN217369612 U CN 217369612U CN 202221204992 U CN202221204992 U CN 202221204992U CN 217369612 U CN217369612 U CN 217369612U
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Abstract
The utility model discloses a solution material adhesion and self-cleaning system of reation kettle, including hot-blast unit, salt solution unit and circulation liquid unit. Has the advantages that: 1. the hot air unit and the circulating liquid unit are added to heat the reaction kettle, so that the adhesion of materials to the reaction kettle and a coil pipe in the reaction kettle is effectively solved, meanwhile, the heating medium is replaced by hot air and a glycol aqueous solution, the problem of corrosion of the coil pipe caused by frozen salt water in the prior art is solved, and the service life of equipment is prolonged; 2. the length of the circulating liquid coil pipe is shortened, the space in the reaction kettle is effectively increased, the materials are fully reacted, and then the adhered materials are more easily removed when the mother liquid is used for cleaning; 3. through the chain control of each unit, the utilization rate of equipment cooling is maximized, the transfer of heat generated during synthesis is accelerated, the heating time after synthesis reaction is shortened, the time of synthetic liquid existing in an acid system is shortened, and the use of energy is reduced.
Description
The technical field is as follows:
the utility model relates to a chemical industry reation kettle washs technical field, especially relates to a reation kettle's solution material adhesion and self-cleaning system.
The background art comprises the following steps:
in the process of synthesizing metaldehyde, because the reaction temperature is low, the generated metaldehyde and byproduct paraldehyde can cause serious adhesion to the inner wall of the reaction kettle and the coil pipe, even if the temperature in the reaction kettle rises in the heat preservation process in the later reaction period, the problem of material adhesion is difficult to relieve, and if the temperature in the reaction kettle rises again, the material decomposition can be caused, and the product quality is influenced. The problem of wall sticking of materials is a big problem in production, when the wall sticking degree is slight, the heat transfer effect of the reaction kettle is reduced, the reaction kettle is slowly cooled, the over-temperature in the reaction kettle is easily caused, the raw materials are lost, and the synthesis yield is seriously influenced; when the wall sticking degree is serious, the production and kettle cleaning must be stopped, and the normal production progress is influenced. In the kettle cleaning process, the coil pipe in the reaction kettle can be damaged, in addition, in order to clean the wall-sticking material, the frozen brine needs to be heated and is circulated in the jacket of the reaction kettle and the coil pipe, and then the wall-sticking material is heated, but the corrosion of the heated frozen brine to the coil pipe is serious, and the coil pipe can be damaged in three months generally, so that the economic loss is caused. The kettle cleaning work is generally finished manually, which consumes manpower, and residual acetaldehyde in the reaction kettle can affect the on-site air quality and the health of workers.
The utility model has the following contents:
an object of the utility model is to provide a reation kettle's solution material adhesion and self-cleaning system.
The utility model discloses by following technical scheme implement: a system for solving material adhesion and automatically cleaning a reaction kettle comprises a hot air unit, a brine unit and a circulating liquid unit;
the outlet of the hot air pipeline of the hot air unit is respectively communicated with the inlet of the reaction kettle jacket and the inlet of the reaction kettle cooling coil; the outlet of the freezing main pipe of the brine unit is respectively communicated with the inlet of the reaction kettle jacket and the inlet of the reaction kettle cooling coil pipe, and the outlets of the reaction kettle jacket and the reaction kettle cooling coil pipe are communicated with the backwater inlet of the brine tank of the brine unit; and the outlet of the circulating liquid pump of the circulating liquid unit is communicated with the inlet of the heating coil of the reaction kettle, and the outlet of the heating coil of the reaction kettle is communicated with the circulating liquid inlet of the circulating liquid heating box of the circulating liquid unit.
Preferably, the length of the reaction kettle heating coil is half of the length of the reaction kettle cooling coil.
Preferably, the hot air unit comprises an instrument gas buffer tank, a steam pipeline, a heat exchanger and a hot air pipeline;
an outlet of the instrument gas buffer tank is communicated with a cold medium inlet of the heat exchanger, and an instrument gas valve and an instrument gas pressure transmitter are sequentially arranged on a pipeline communicated with the instrument gas buffer tank and the heat exchanger along the direction of gas flow; an outlet of the steam pipeline is communicated with a heat medium inlet of the heat exchanger, and a steam valve and a steam thermometer are sequentially arranged on the pipeline which is communicated with the steam pipeline and the heat exchanger along the steam direction; a cold medium outlet of the heat exchanger is communicated with an inlet of the hot air pipeline, and a hot air valve, a hot air thermometer and a hot air pressure transmitter are sequentially arranged at the cold medium outlet of the heat exchanger along the direction of air flow;
the signal output ends of the instrument gas pressure transmitter and the steam thermometer are connected with the signal input end of the DCS controller, and the signal output end of the DCS controller is respectively connected with the signal input ends of the instrument gas valve, the steam valve and the hot air valve.
Preferably, compressed air is filled in the instrument gas buffer tank.
Preferably, the brine unit comprises a brine tank, a freezing main pipe and a brine tank pump;
an outlet of the brine tank is communicated with an inlet of the brine tank pump, an outlet of the brine tank pump is respectively communicated with an inlet of the freezing main pipe and a return inlet of the brine tank, a return water valve is arranged at a return water inlet of the brine tank, a water inlet valve is arranged at the inlet of the freezing main pipe, a brine pressure transmitter is arranged at the outlet of the brine tank pump, and a brine level meter is arranged on the side surface of the brine tank;
the signal output end of the brine level meter is connected with the signal input end of the DCS controller, and the signal output end of the DCS controller is respectively connected with the signal input ends of the water return valve, the water inlet valve and the brine tank pump.
Preferably, the circulating liquid unit comprises a circulating liquid heating box, a circulating liquid heating steam pipeline and a circulating liquid pump; an outlet of the circulating liquid heating steam pipeline is communicated with a heat medium inlet of the circulating liquid heating box, a circulating liquid outlet of the circulating liquid heating box is communicated with an inlet of the circulating liquid pump, and an outlet of the circulating liquid pump is also communicated with a circulating liquid backflow inlet of the circulating liquid heating box; a circulating liquid heating steam valve is arranged at the outlet of the circulating liquid heating steam pipeline, a circulating liquid thermometer and a circulating liquid level meter are arranged on the circulating liquid heating box, and a circulating liquid pressure transmitter is arranged at the outlet of the circulating liquid pump;
the signal output ends of the circulating liquid thermometer, the circulating liquid level meter and the reaction kettle thermometer are connected with the signal input end of the DCS controller, and the signal output end of the DCS controller is connected with the circulating liquid heating steam valve and the signal input end of the circulating liquid pump.
Preferably, the circulating liquid is an aqueous solution of ethylene glycol.
Preferably, the hot air unit further comprises a condensate storage tank, the heat medium outlet of the heat exchanger of the hot air unit is communicated with the inlet of the condensate storage tank, and the heat medium outlet of the circulating liquid heating box of the circulating liquid unit is communicated with the inlet of the condensate storage tank.
The utility model has the advantages that: 1. by adding the hot air unit and the circulating liquid unit, the salt water coil and the circulating liquid coil are heated, so that the temperature in the reaction kettle is higher than the solidifying point of trimerization mother liquor, and the adhesion of materials to the reaction kettle and the coil in the reaction kettle is effectively reduced; 2. the length of the circulating liquid coil pipe is shortened, the space in the reaction kettle is effectively increased, the materials are fully reacted, and then the adhered materials are more easily removed when the mother liquid is used for cleaning; 3. the heating medium is replaced by hot air and glycol aqueous solution, so that the problem of corrosion of the prior frozen salt water to the coil is solved, the frequent replacement of the coil is avoided, and the service life of the coil is prolonged to three years from three to four months; 4. through the chain control of each unit, the utilization rate of equipment cooling is maximized, the transfer of heat generated during synthesis is accelerated, the heating time after synthesis reaction is shortened, the time of synthetic liquid existing in an acid system is shortened, and the use of energy is reduced.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the present embodiment;
FIG. 2 is a schematic diagram of signal transmission of the automatic control assembly of the present embodiment;
in the figure: 1. hot air unit, 101, instrument gas buffer tank, 102, steam pipe, 103, heat exchanger, 104, hot air pipe, 105, instrument gas valve, 106, instrument gas pressure transmitter, 107, steam valve, 108, steam thermometer, 109, hot air valve, 110, hot air thermometer, 111, hot air pressure transmitter, 2, brine unit, 201, brine tank, 202, freezing main, 203, brine tank pump, 204, return valve, 205, water inlet valve, 206, brine pressure transmitter, 207, brine level meter, 3, circulating liquid unit, 301, circulating liquid heating tank, 302, circulating liquid heating steam pipe, 303, circulating liquid pump, 304, circulating liquid heating steam valve, 305, circulating liquid thermometer, 306, circulating liquid level meter, 307, circulating liquid pressure transmitter, 4, condensate storage tank, 5, reaction kettle, 501, reaction kettle jacket, 502, reaction kettle cooling coil, 503. a heating coil of the reaction kettle, 504, a thermometer of the reaction kettle, 6 and a DCS controller.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1:
as shown in fig. 1-2, a system for solving material adhesion and automatically cleaning a reaction kettle comprises a hot air unit 1, a brine unit 2, a circulating liquid unit 3, a DCS controller 6 and a condensate storage tank 4; the hot air unit 1 comprises an instrument gas buffer tank 101, a steam pipeline 102, a heat exchanger 103 and a hot air pipeline 104; the brine unit 2 comprises a brine tank 201, a freezing main 202 and a brine tank pump 203; the circulating liquid unit 3 comprises a circulating liquid heating box 301, a circulating liquid heating steam pipeline 302 and a circulating liquid pump 303; the instrument gas buffer tank 101 is filled with compressed air, and the circulating liquid is a glycol aqueous solution.
An outlet of the instrument gas buffer tank 101 is communicated with a cold medium inlet of the heat exchanger 103, and an instrument gas valve 105 and an instrument gas pressure transmitter 106 are sequentially arranged on a pipeline communicating the instrument gas buffer tank 101 with the heat exchanger 103 along the direction of gas flow; an outlet of the steam pipeline 102 is communicated with a heat medium inlet of the heat exchanger 103, a steam valve 107 and a steam thermometer 108 are sequentially arranged on a pipeline for communicating the steam pipeline 102 with the heat exchanger 103 along the steam direction, and a heat medium outlet of the heat exchanger 103 is communicated with an inlet of the condensate storage tank 4; a cold medium outlet of the heat exchanger 103 is communicated with an inlet of the hot air pipeline 104, and a hot air valve 109, a hot air thermometer 110 and a hot air pressure transmitter 111 are sequentially arranged at the cold medium outlet of the heat exchanger 103 along the direction of air flow; the outlet of the hot air pipe 104 is respectively communicated with the inlet of the reactor jacket 501 and the inlet of the reactor cooling coil 502.
The outlet of the brine tank 201 is communicated with the inlet of the brine tank pump 203, the outlet of the brine tank pump 203 is respectively communicated with the inlet of the freezing main pipe 202 and the return inlet of the brine tank 201, the outlet of the freezing main pipe 202 is respectively communicated with the inlets of the reaction kettle jacket 501 and the reaction kettle cooling coil 502, the outlets of the reaction kettle jacket 501 and the reaction kettle cooling coil 502 are communicated with the return inlet of the brine tank 201, the return inlet of the brine tank 201 is provided with a return valve 204, the inlet of the freezing main pipe 202 is provided with a water inlet valve 205, the outlet of the brine tank pump 203 is provided with a brine pressure transmitter 206, and the side of the brine tank 201 is provided with a brine level meter 207.
An outlet of the circulating liquid heating steam pipeline 302 is communicated with a heat medium inlet of the circulating liquid heating box 301, a heat medium outlet of the circulating liquid heating box 301 is communicated with an inlet of the condensate storage tank 4, a circulating liquid outlet of the circulating liquid heating box 301 is communicated with an inlet of the circulating liquid pump 303, an outlet of the circulating liquid pump 303 is respectively communicated with a circulating liquid backflow inlet of the circulating liquid heating box 301 and an inlet of the reaction kettle heating coil 503, and an outlet of the reaction kettle heating coil 503 is communicated with a circulating liquid inlet of the circulating liquid heating box 301; a steam valve is arranged at the outlet of the circulating liquid heating steam pipeline 302, a circulating liquid thermometer 305 and a circulating liquid level meter 306 are arranged on the circulating liquid heating box 301, and a circulating liquid pressure transmitter 307 is arranged at the outlet of the circulating liquid pump 303.
The length of the heating coil 503 of the reaction kettle is half of that of the cooling coil 502 of the reaction kettle, so that the space in the reaction kettle 5 is effectively increased, and the materials in the reaction kettle 5 can fully react, thereby being more easily dissolved when being washed by mother liquor.
The signal output ends of the instrument gas pressure transmitter 106, the steam thermometer 108, the brine level meter 207, the circulating liquid thermometer 305, the circulating liquid level meter 306 and the reaction kettle thermometer 504 are connected with the signal input end of the DCS controller 6, and the signal output end of the DCS controller 6 is respectively connected with the signal input ends of the instrument gas valve 105, the steam valve 107, the hot air valve 109, the brine tank pump 203, the water return valve 204, the water inlet valve 205, the circulating liquid pump 303 and the circulating liquid heating steam valve 304.
The working description is as follows: after each batch of synthesis reaction is completed, part of alkaline materials in the reaction kettle 5 are remained on the reaction strand heating coil in the reaction kettle 5, the outer wall of the reaction kettle cooling coil 502 and the inner wall of the reaction kettle 5. After the synthesis heat preservation is finished, gradually opening an instrument air valve 105, a steam valve 107 and a hot air valve 109, when the pressure of compressed air detected by an instrument air pressure transmitter 106 reaches a preset value, fixing the opening degree of the instrument air valve 105, performing heat exchange between the compressed air and the steam in a heat exchanger 103, when the temperature detected by a hot air thermometer 110 reaches the preset value, fixing the opening degree of the steam valve 107, and when the temperature of the hot air is higher than the preset value, closing the hot air valve 109 and simultaneously reducing the opening degree of the steam valve 107; the compressed air that is heated is hot-blast, carries to reation kettle through hot-blast main 104 and presss from both sides cover 501 and reation kettle cooling coil 502, blows the brine in reation kettle cover 501 and reation kettle cooling coil 502 to brine tank 201 after, continuously sweeps reation kettle cooling coil 502, heats reation kettle cooling coil 502 with hot-blast, has effectively avoided the corruption of the freezing brine of heating to reation kettle cooling coil 502. Meanwhile, the door of the circulating liquid heating steam valve 304 is gradually opened, the circulating liquid heating steam and the circulating liquid exchange heat in the circulating liquid heating box 301, when the temperature detected by the circulating liquid thermometer 305 reaches a preset value, the opening of the circulating liquid heating steam valve 304 is fixed, the heated circulating liquid is conveyed to the heating coil 503 of the reaction kettle through the circulating liquid pump 303, and the heated circulating liquid and hot air in the cooling coil 502 of the reaction kettle and the jacket 501 of the reaction kettle heat the reaction kettle 5 together, so that the wall-sticking material in the reaction kettle 5 is dissolved and enters the next reaction step. After the reaction in the reaction kettle 5 is completely finished, kettle washing liquid is injected into the reaction kettle 5, and the reaction kettle 5 is heated by hot air and circulating liquid, so that the reaction kettle 5 is thoroughly cleaned.
Through the chain control of each unit, the utilization rate of equipment cooling is maximized, the transfer of heat generated during synthesis is accelerated, the heating time after the synthesis reaction is reduced, the time of a synthetic solution existing in an acid system is reduced, meanwhile, the use of energy is also reduced, the steam consumption for producing one ton of products is reduced to 5t from the original 8t, the electric quantity is reduced to 1800 ℃ from the original 2000 ℃, the synthesis yield is improved to 8% from the original 5%, and the production capacity is increased to the current 7 ton/day from the original 4 ton/day. As the kettle does not need to be disassembled for cleaning, the labor intensity of staff is greatly reduced, the on-site environment is greatly improved, and the on-site acetaldehyde gas concentration is prevented from exceeding the standard.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A system for solving material adhesion and automatically cleaning a reaction kettle is characterized by comprising a hot air unit, a brine unit and a circulating liquid unit;
the outlet of the hot air pipeline of the hot air unit is respectively communicated with the inlet of the reaction kettle jacket and the inlet of the reaction kettle cooling coil; the outlet of the freezing main pipe of the brine unit is respectively communicated with the inlet of the reaction kettle jacket and the inlet of the reaction kettle cooling coil pipe, and the outlets of the reaction kettle jacket and the reaction kettle cooling coil pipe are communicated with the backwater inlet of the brine tank of the brine unit; and the outlet of the circulating liquid pump of the circulating liquid unit is communicated with the inlet of the heating coil of the reaction kettle, and the outlet of the heating coil of the reaction kettle is communicated with the circulating liquid inlet of the circulating liquid heating box of the circulating liquid unit.
2. The system of claim 1, wherein the length of the reactor heating coil is half of the length of the reactor cooling coil.
3. The system for solving the material adhesion and automatically cleaning the reaction kettle according to claim 2, wherein the hot air unit comprises an instrument gas buffer tank, a steam pipeline, a heat exchanger and a hot air pipeline;
an outlet of the instrument gas buffer tank is communicated with a cold medium inlet of the heat exchanger, and an instrument gas valve and an instrument gas pressure transmitter are sequentially arranged on a pipeline communicated with the instrument gas buffer tank and the heat exchanger along the direction of gas flow; an outlet of the steam pipeline is communicated with a heat medium inlet of the heat exchanger, and a steam valve and a steam thermometer are sequentially arranged on the pipeline which is communicated with the steam pipeline and the heat exchanger along the steam direction; a cold medium outlet of the heat exchanger is communicated with an inlet of the hot air pipeline, and a hot air valve, a hot air thermometer and a hot air pressure transmitter are sequentially arranged at the cold medium outlet of the heat exchanger along the direction of air flow;
the signal output ends of the instrument gas pressure transmitter and the steam thermometer are connected with the signal input end of the DCS controller, and the signal output end of the DCS controller is respectively connected with the signal input ends of the instrument gas valve, the steam valve and the hot air valve.
4. The system for solving the material adhesion and automatically cleaning the reaction kettle according to claim 3, wherein the instrument gas buffer tank is filled with compressed air.
5. The system for solving the material adhesion and automatically cleaning the reaction kettle according to claim 4, wherein the brine unit comprises a brine tank, a freezing main pipe and a brine tank pump;
an outlet of the brine tank is communicated with an inlet of the brine tank pump, an outlet of the brine tank pump is respectively communicated with an inlet of the freezing main pipe and a return inlet of the brine tank, a return water valve is arranged at a return water inlet of the brine tank, a water inlet valve is arranged at the inlet of the freezing main pipe, a brine pressure transmitter is arranged at the outlet of the brine tank pump, and a brine level meter is arranged on the side surface of the brine tank;
the signal output end of the brine level meter is connected with the signal input end of the DCS controller, and the signal output end of the DCS controller is respectively connected with the signal input ends of the water return valve, the water inlet valve and the brine tank pump.
6. The system for solving the material adhesion and automatically cleaning the reaction kettle according to claim 5, wherein the circulating liquid unit comprises a circulating liquid heating box, a circulating liquid heating steam pipeline and a circulating liquid pump; an outlet of the circulating liquid heating steam pipeline is communicated with a heat medium inlet of the circulating liquid heating box, a circulating liquid outlet of the circulating liquid heating box is communicated with an inlet of the circulating liquid pump, and an outlet of the circulating liquid pump is also communicated with a circulating liquid backflow inlet of the circulating liquid heating box; a circulating liquid heating steam valve is arranged at an outlet of the circulating liquid heating steam pipeline, a circulating liquid thermometer and a circulating liquid level meter are arranged on the circulating liquid heating box, and a circulating liquid pressure transmitter is arranged at an outlet of the circulating liquid pump;
the signal output ends of the circulating liquid thermometer, the circulating liquid level meter and the reaction kettle thermometer are connected with the signal input end of the DCS controller, and the signal output end of the DCS controller is connected with the signal input ends of the steam valve and the circulating liquid pump.
7. The system for solving the material adhesion and automatically cleaning the reaction kettle according to claim 6, wherein the circulating liquid is an aqueous solution of ethylene glycol.
8. The system for solving the material adhesion and automatically cleaning the reaction kettle according to claim 7, further comprising a condensate storage tank, wherein the heat exchanger heat medium outlet of the hot air unit is communicated with the condensate storage tank inlet, and the heat medium outlet of the circulating liquid heating box of the circulating liquid unit is communicated with the condensate storage tank inlet.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220851397 | 2022-04-13 | ||
| CN2022208513975 | 2022-04-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217369612U true CN217369612U (en) | 2022-09-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221204992.6U Active CN217369612U (en) | 2022-04-13 | 2022-05-17 | Material adhesion solving and automatic cleaning system of reaction kettle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217369612U (en) |
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2022
- 2022-05-17 CN CN202221204992.6U patent/CN217369612U/en active Active
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