CN209866061U - Continuous neutralization and layering system for mixed feed liquid after chlorination hydrolysis - Google Patents
Continuous neutralization and layering system for mixed feed liquid after chlorination hydrolysis Download PDFInfo
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- CN209866061U CN209866061U CN201920242773.9U CN201920242773U CN209866061U CN 209866061 U CN209866061 U CN 209866061U CN 201920242773 U CN201920242773 U CN 201920242773U CN 209866061 U CN209866061 U CN 209866061U
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Abstract
A mixed feed liquid continuous neutralization and layering system after chlorination hydrolysis comprises a storage kettle, a first reactor, a first alkali liquor storage tank, a second reactor, a second alkali liquor storage tank, a first metering pump, a second metering pump, a third metering pump, a layering device, a detection device and a control device, wherein the outlet of the first alkali liquor storage tank is connected with the first metering pump, the outlet of the first metering pump is connected with a first pipeline, the outlet of the second alkali liquor storage tank is connected with the second metering pump, the outlet of the second metering pump is connected with a second pipeline, the detection device comprises a first PH detection meter and a second PH detection meter, the utility model discloses a continuous automatic process realizes the continuous production of ethyl maltol chlorination neutralization, simplifies the problem of difficult operation of the existing workers, improves the product yield, and adopts DCS on-line control and monitoring, reduces the influence of human factors on the product yield, the production cost is reduced, the equipment utilization rate of the front working section is improved, the production environment is improved, and the method is safe and environment-friendly.
Description
Technical Field
The utility model relates to an ethyl maltol preparation technical field especially relates to a continuous neutralization layering system of mixed feed liquid after chlorination hydrolyzes.
Background
In the chlorination section in the traditional ethyl maltol production process, 54% ~ 56% of methanol aqueous solution is firstly fed into a chlorination kettle by a circulating pump, then mixed solution of furfuryl alcohol (kg) and methanol (L) 1: 1 and chlorine gas are dripped into the chlorination kettle, after the reaction is finished, the materials are fed into a hydrolysis kettle by the circulating pump, the methanol is evaporated out in the hydrolysis kettle and then subjected to hydrolysis reaction, after the hydrolysis reaction is carried out for 3 hours, the pH needs to be neutralized to 2.5-3.0 and then layered treatment is carried out.
Disclosure of Invention
It is necessary to provide a continuous neutralization and layering system for mixed material liquid after chlorination and hydrolysis.
A continuous neutralization and layering system for mixed feed liquid after chlorination hydrolysis comprises a storage kettle, a first reactor, a first alkali liquor storage tank, a second reactor, a second alkali liquor storage tank, a first metering pump, a second metering pump, a third metering pump, a layering device, a detection device and a control device, wherein an inlet of the storage kettle is connected with a chlorination hydrolysis kettle through a pipeline, an outlet of the storage kettle is connected with an inlet of the third metering pump, an outlet of the third metering pump is connected with an inlet of the first reactor through a first pipeline, an outlet of the first reactor is connected with an inlet of the second reactor through a second pipeline, an outlet of the second reactor is connected with the layering device through a pipeline, the layering device is sequentially provided with a gas phase outlet, a water phase outlet, an oil layer outlet and a bottom layer outlet from top to bottom for respectively discharging gas, a water layer, an oil layer and a bottom layer, an outlet of the first alkali liquor storage tank is connected with the first metering pump, the outlet of the first metering pump is connected with a first pipeline, the outlet of the second alkali liquor storage tank is connected with a second metering pump, the outlet of the second metering pump is connected with a second pipeline, the detection device comprises a first pH detection meter and a second pH detection meter, the first pH detection meter is arranged at the outlet of the first reactor and is used for detecting the pH value of the mixed liquor flowing out of the outlet of the first reactor, the second pH detection meter is arranged at the outlet of the second reactor and is used for detecting the pH value of the mixed liquor flowing out of the outlet of the second reactor and providing the pH value to the control device, a processor is arranged inside the control device and is connected with the first metering pump, the second metering pump and the third metering pump, the processor receives the pH value and processes the pH value and controls the first metering pump and the second metering pump according to the processing result, thereby controlling the amount of lye added to the first reactor and the second reactor.
The utility model discloses a continuous automation technology has realized the serialization production of ethyl maltol chlorination liquid neutralization, the current difficult problem of worker's operation of simplification, has improved the product yield. And DCS on-line control and monitoring are adopted, so that the influence of human factors on the product yield is reduced, the production cost is reduced, the equipment utilization rate of the front working section is improved, the production environment is improved, and the method is safe and environment-friendly.
Drawings
FIG. 1 is a schematic structural diagram of a continuous neutralization and layering system of the mixed feed liquid after chlorination hydrolysis.
Fig. 2 is a schematic view of the internal structure of the first reactor.
Fig. 3 is an enlarged view of a portion of the mixer of fig. 2.
Fig. 4 is a schematic view of another embodiment of the mixer of fig. 2.
Fig. 5 is a functional block diagram of the controller.
In the figure: the system comprises a storage kettle 10, a first reactor 20, a first pipeline 21, a second pipeline 22, a pipe body 23, a mixing section 231, a reaction section 232, an outflow section 233, a mixer 234, an inner pipe 2341, a first entry section 23411, a first pressure applying section 23412, a first ejection section 23413, an outer pipe 2342, a second entry section 23421, a second pressure applying section 23422, a second ejection section 23423, a jacket layer 24, a first alkali liquor storage tank 30, a second reactor 40, a second alkali liquor storage tank 50, a first metering pump 60, a second metering pump 70, a third metering pump 80, a layering device 90, a tower 91, a gas phase outlet 92, a water phase outlet 93, an oil layer outlet 94, a bottom layer outlet 95, an upper expansion section 96, a lower expansion section 97, a first pH detector 101, a second pH detector 102, a first temperature detector 103, a second temperature detector 104, and a control device 110.
Detailed Description
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Referring to fig. 1 to 5, an embodiment of the present invention provides a continuous neutralization and stratification system for mixed feed liquid after chlorination hydrolysis, including a storage kettle 10, a first reactor 20, a first alkali liquid storage tank 30, a second reactor 40, a second alkali liquid storage tank 50, a first metering pump 60, a second metering pump 70, a third metering pump 80, a stratification device 90, a detection device, and a control device 110, wherein an inlet of the storage kettle 10 is connected to the chlorination hydrolysis kettle through a pipeline, an outlet of the storage kettle 10 is connected to an inlet of the third metering pump 80, an outlet of the third metering pump 80 is connected to an inlet of the first reactor 20 through a first pipeline 21, an outlet of the first reactor 20 is connected to an inlet of the second reactor 40 through a second pipeline 22, an outlet of the second reactor 40 is connected to the stratification device 90 through a pipeline, and the stratification device 90 is sequentially provided with a gas phase outlet 92, a water phase outlet 93, a water phase outlet 90, and a stratification device 90 from top to bottom, Oil layer export 94, bottom export 95 for discharge gas, water layer, oil layer, bottom respectively, the export of first lye storage tank 30 is connected with first measuring pump 60, and the export of first measuring pump 60 is connected with first pipeline 21, and the export of second lye storage tank 50 is connected with second measuring pump 70, and the export of second measuring pump 70 is connected with second pipeline 22, detection device includes first pH detection meter 101 and second pH detection meter 102, and first pH detection meter 101 sets up in the exit of first reactor 20 for detect the pH value of the mixed feed liquid that flows out the export of first reactor 20, and second pH detection meter 102 sets up in the exit of second reactor 40 for detect the pH value of the mixed feed liquid that flows out the export of second reactor 40, and will pH value provides controlling means 110, controlling means 110 is inside to set up the treater, treater and first measuring pump 60, water layer, oil layer, bottom, the export of first lye storage tank 30 is connected with first measuring pump 60, and the export is connected with first pipeline 21, and the, The second metering pump 70 and the third metering pump 80 are connected, and the processor receives the pH value, processes the pH value, and controls the first metering pump 60 and the second metering pump 70 according to the processing result, thereby controlling the amount of the alkali liquor added into the first reactor 20 and the second reactor 40.
In the utility model, a two-stage pH adjusting mode is set, when the pH value detected by the first pH detector 101 at the outlet of the first reactor 20 meets the process requirements, the second metering pump 70 does not act, the second reactor 40 is used as a secondary mixer 234 to carry out two-stage mixing on the mixed feed liquid, and then the mixed feed liquid is sent to the layering device 90; when the pH value detected by the first pH detector 101 does not meet the process requirements, the second metering pump 70 acts to add alkali liquor to the second reactor 40, thereby adjusting the pH value of the mixed liquor for the second time, thus, when the first metering pump 60 acts, the amount of the added alkali liquor is large and used as a coarse adjustment, and the amount of the added alkali liquor is small and used as a fine adjustment, so that the pH value of the alkali liquor entering the layering device 90 meets the process requirements.
Examples of the on-line control of the amount of lye added by the processor may be: the method comprises the steps that a first pH reference value and a second pH reference value are stored in a processor in advance, the pH value of mixed feed liquid flowing out of an outlet of a first reactor 20 is a first pH value, the pH value of mixed feed liquid flowing out of an outlet of a second reactor 40 is a second pH value, the processor compares the received first pH value with the first pH reference value, when the first pH value is lower than the first pH reference value, the process requirement is not met, the processor sends an action signal to a second metering pump 70, the second metering pump 70 acts, alkali liquor is added into a second pipeline 22, and after the mixed feed liquid reacts in the second reactor 40, a second pH detector 102 continues to monitor the second pH value; when the first pH value is not lower than the first pH reference value, it indicates that the process requirements are met, the processor does not send an action signal to the second metering pump 70, the second metering pump 70 does not act, and at this time, the second reactor 40 serves as a secondary reactor to perform a secondary mixing reaction on the mixed material liquid.
The processor of the control device 110 may be implemented by a logic circuit, may be a comparator circuit, and may be a comparator, a temperature detector, or a temperature sensor, and the pH detector may be a sensor capable of detecting pH value, which is commercially available.
Further, the first reactor 20 and the second reactor 40 have the same structure, the first reactor 20 includes a pipe body 23 and a jacket layer 24, the pipe body 23 includes a mixing section 231, a reaction section 232, and an outflow section 233 which are sequentially arranged, the front end of the mixing section 231 is provided with an inlet to be connected with the first pipeline 21, the rear end is provided with an outlet to be connected with the second pipeline 22, the jacket layer 24 surrounds the outer wall of the pipe body 23, a space for circulating water to flow is reserved inside the jacket layer 24, the two ends of the jacket layer 24 are respectively provided with a circulating water inlet and a circulating water outlet, the side wall of the front end of the mixing section 231 is provided with an alkali liquor inlet to be communicated with the mixing section 231, and the side wall of the outflow section 233 is provided with a pH detection port to allow the first pH detection meter 101 to be inserted.
Further, the detection device further includes a first temperature detector 103 and a second temperature detector 104, a temperature measurement port is further formed in the side wall of the reaction section 232 of the first reactor 20 for the first temperature detector 103 to be inserted into to detect the temperature inside the first reaction section 232, and a temperature measurement port is further formed in the side wall of the reaction section 232 of the second reactor 40 for the second temperature detector 104 to be inserted into to detect the temperature inside the second reaction section 232.
Further, a mixer 234 is further provided inside the mixing section 231, the mixer 234 includes an inner pipe 2341 and an outer pipe 2342 which are coaxially nested, the inner pipe 2341 includes a first entrance section 23411, a first pressure applying section 23412 and a first ejection section 23413 which are sequentially provided, the first entrance section 23411 is a constant diameter pipe body 23, a front end of the first entrance section 23411 is connected with the first pipe 21, a rear end of the first entrance section 23411 is connected with a front end of the first pressure applying section 23412, a rear end of the first pressure applying section 23412 is connected with a front end of the first ejection section 23413, a rear end of the first ejection section 23413 is open, the first pressure applying section 23412 is a necking pipe body 23 which is rearward from the front, the outer pipe 2342 includes a second entrance section 23421, a second pressure applying section 23422 and a second ejection section 23423 which are sequentially provided, the second entrance section 23421 is a constant diameter pipe body 23, a front end of the second entrance section 23421 is connected with the second pipe body 22, and a front end of the second entrance section 23421 is connected with a front end of the second pressure applying section 23422, the rear end of the second pressing section 23422 is connected with the front end of the second spraying section 23423, the rear end of the second spraying section 23423 is open, the length of the second spraying section 23423 is greater than that of the first spraying section 23413, the rear end opening of the first spraying section 23413 and the rear end opening of the second spraying section 23423 are both arranged towards the reaction section 232, and the lye inlets are arranged on the side wall of the second inlet section 23421.
The provision of the first pressure applying section 23412 in the mixer 234, in cooperation with the third metering pump 80, allows the feed liquid entering the mixing section 231 of the first reactor 20 to be pressurized and, upon entering the reaction section 232, already forms vortex mixing in the mixing section 231, allowing the feed liquid to be mixed well with the lye.
Mixed feed liquid gets into inner tube 2341 along first entering section 23411 of inner tube 2341, during through first section 23412 of exerting pressure, because the shrink in space for the feed liquid has great pressure, and then sprays and go out from first blowout section 23413, forms the siphon vortex, makes the inside alkali lye of getting into outer tube 2342 inhale by the feed liquid siphon, and this siphon suction forms the power that alkali lye naturally got into blender 234, need not setting up solitary power supply for first alkali lye storage tank 30.
As another understanding, the end of the first conduit 21 may also be considered the first entry segment 23411 of the mixing segment 231. The tubular bodies 23 of the first reactor 20 and the second reactor 40 have a diameter of 57 to 89mm and a length of 2500 mm.
The reaction section 232 is provided with packing for the inside of the tube body 23 to form a reaction space having a suitable resistance.
Further, the mixer 234 is obliquely disposed inside the inner pipe 2341 of the mixing section 231, the mixer 234 is close to the bottom of the inner pipe 2341, and the outlet direction of the mixer 234 is upward inclined.
The outlet of the mixer 234 is inclined, so that the sprayed mixture is sprayed obliquely upwards and then freely falls downwards, and during the downward falling process and the obliquely upwards spraying process, when the mixture is collided by the inner wall of the inner pipe 2341 and the wall of the reaction section 232, a larger vortex and mixed flow power are formed, and further mixing is facilitated; and the blender 234 is close to the bottom setting of inner tube 2341 for the space that the mixture material that the blender 234 export was spun is upwards raised is bigger, the inside space of make full use of inner tube 2341.
Further, the storage kettle 10 is internally provided with a stirring paddle, and the outer wall of the storage kettle 10 is provided with a jacket layer 24.
Further, the layering device 90 includes the vertical tower body 91 that sets up, set up in the upper portion on tower body 91 upper portion and expand section 96, set up in the lower part of tower body 91 lower part and expand section 97, the upper portion expands the internal diameter that section 96 and lower part expand section 97 and is greater than the internal diameter of tower body 91, still sets up the entry on the tower body 91 lateral wall, sets up gaseous phase export 92, aqueous phase export 93, oil reservoir export 94, bottom export 95 on the upper portion expands section 96 lateral wall, the entry sets up in the well upper portion of tower body 91.
The inner diameters of the upper expanding section 96 and the lower expanding section 97 are larger than the inner diameter of the tower body 91, so that the change of an inner space from small to large is formed, and when the mixed material liquid is naturally layered according to different specific gravities, the space is enlarged, so that a volume drop is formed during layering, and the separation of materials with different specific gravities is facilitated.
The embodiment of the utility model provides a module or unit in the device can merge, divide and delete according to actual need.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a continuous neutralization layering system of mixed feed liquid after chlorination hydrolysis which characterized in that: comprises a storage kettle, a first reactor, a first alkali liquor storage tank, a second reactor, a second alkali liquor storage tank, a first metering pump, a second metering pump, a third metering pump, a layering device, a detection device and a control device, wherein an inlet of the storage kettle is connected with a chlorination hydrolysis kettle through a pipeline, an outlet of the storage kettle is connected with an inlet of the third metering pump, an outlet of the third metering pump is connected with an inlet of the first reactor through a first pipeline, an outlet of the first reactor is connected with an inlet of the second reactor through a second pipeline, an outlet of the second reactor is connected with the layering device through a pipeline, the layering device is sequentially provided with a gas phase outlet, a water phase outlet, an oil layer outlet and a bottom layer outlet from top to bottom for respectively discharging gas, a water layer, an oil layer and a bottom layer, an outlet of the first alkali liquor storage tank is connected with the first metering pump, an outlet of the first metering pump is connected with the first pipeline, the outlet of the second alkali liquor storage tank is connected with a second metering pump, the outlet of the second metering pump is connected with a second pipeline, the detection device comprises a first pH detector and a second pH detector, the first pH detector is arranged at the outlet of the first reactor, used for detecting the pH value of the mixed feed liquid flowing out of the outlet of the first reactor, a second pH detector is arranged at the outlet of the second reactor, for detecting the pH value of the mixed feed liquid flowing out of the outlet of the second reactor and providing the pH value to a control device, a processor is arranged in the control device, the processor is connected with the first metering pump, the second metering pump and the third metering pump, the processor receives the pH value, and processing the pH value, and controlling the first metering pump and the second metering pump according to the processing result, thereby controlling the amount of the alkali liquor added into the first reactor and the second reactor.
2. The continuous neutralization and layering system for mixed liquor after chlorination and hydrolysis as claimed in claim 1, wherein: the first reactor and the second reactor have the same structure, the first reactor comprises a pipe body and a jacket layer, the pipe body comprises a mixing section, a reaction section and an outflow section which are sequentially arranged, the front end of the mixing section is provided with an inlet to be connected with a first pipeline, the rear end of the mixing section is provided with an outlet to be connected with a second pipeline, the jacket layer surrounds the outer wall of the pipe body, a space for circulating water to flow is reserved inside the jacket layer, the two ends of the jacket layer are respectively provided with a circulating water inlet and a circulating water outlet, the side wall of the front end of the mixing section is also provided with an alkali liquor inlet to be communicated with the mixing section, and the side wall of the outflow section is also provided with a pH value detection port to be inserted by a first pH detection meter.
3. The continuous neutralization and layering system for mixed liquor after chlorination and hydrolysis as claimed in claim 2, wherein: the detection device also comprises a first temperature detector and a second temperature detector, a temperature measuring port is formed in the side wall of the reaction section of the first reactor for the first temperature detector to insert so as to detect the temperature in the first reaction section, and a temperature measuring port is formed in the side wall of the reaction section of the second reactor for the second temperature detector to insert so as to detect the temperature in the second reaction section.
4. The continuous neutralization and layering system for mixed liquor after chlorination and hydrolysis as claimed in claim 2, wherein: the mixer is also arranged in the mixing section and comprises an inner pipe and an outer pipe which are coaxially nested, the inner pipe comprises a first entering section, a first pressure applying section and a first spraying section which are sequentially arranged, the first entering section is an equal-diameter pipe body, the front end of the first entering section is connected with a first pipeline, the rear end of the first entering section is connected with the front end of the first pressure applying section, the rear end of the first pressure applying section is connected with the front end of the first spraying section, the rear end of the first spraying section is open, the first pressure applying section is a necking pipe body from front to back, the outer pipe comprises a second entering section, a second pressure applying section and a second spraying section which are sequentially arranged, the second entering section is an equal-diameter pipe body, the front end of the second entering section is connected with a second pipeline, the rear end of the second entering section is connected with the front end of the second pressure applying section, the rear end of the second pressure applying section is connected with the front end of the second spraying section, and the rear end of the second spraying section is open, the length of second blowout section is greater than the length of first blowout section, and the rear end of first blowout section is uncovered and the rear end of second blowout section is uncovered all sets up towards the reaction section, the alkali lye entry sets up on the lateral wall of second entering section.
5. The continuous neutralization and layering system for mixed liquor after chlorination and hydrolysis as claimed in claim 4, wherein: the blender slope sets up in the inner tube of mixing section inside, and the blender is close to the bottom of inner tube, and the export direction of blender upwards slopes.
6. The continuous neutralization and layering system for mixed liquor after chlorination and hydrolysis as claimed in claim 1, wherein: the storage kettle is internally provided with a stirring paddle, and the outer wall of the storage kettle is provided with a jacket layer.
7. The continuous neutralization and layering system for mixed liquor after chlorination and hydrolysis as claimed in claim 1, wherein: the layering device includes the tower body of vertical setting, sets up in the upper portion on tower body upper portion and enlarges the section, set up in the lower part of tower body lower part and enlarge the section, and the internal diameter that upper portion enlarges section and lower part and enlarge the section is greater than the internal diameter of tower body, still sets up the entry on the tower body lateral wall, sets up gaseous phase export, water phase export, oil reservoir export, bottom export on the upper portion enlarges the section lateral wall, the entry sets up in the well upper portion of tower body.
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| CN201920242773.9U CN209866061U (en) | 2019-02-26 | 2019-02-26 | Continuous neutralization and layering system for mixed feed liquid after chlorination hydrolysis |
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| CN201920242773.9U CN209866061U (en) | 2019-02-26 | 2019-02-26 | Continuous neutralization and layering system for mixed feed liquid after chlorination hydrolysis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109865494A (en) * | 2019-02-26 | 2019-06-11 | 宁夏万香源生物科技有限公司 | Mixed liquor continuously neutralizes hierarchical system after a kind of chlorinated hydrolysis |
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2019
- 2019-02-26 CN CN201920242773.9U patent/CN209866061U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109865494A (en) * | 2019-02-26 | 2019-06-11 | 宁夏万香源生物科技有限公司 | Mixed liquor continuously neutralizes hierarchical system after a kind of chlorinated hydrolysis |
| CN109865494B (en) * | 2019-02-26 | 2024-03-08 | 宁夏万香源生物科技有限公司 | Mixed feed liquid continuous neutralization layering system after chlorination hydrolysis |
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