CN215743358U - Automatic control system for producing xylose by hydrolysis - Google Patents
Automatic control system for producing xylose by hydrolysis Download PDFInfo
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- CN215743358U CN215743358U CN202122069121.XU CN202122069121U CN215743358U CN 215743358 U CN215743358 U CN 215743358U CN 202122069121 U CN202122069121 U CN 202122069121U CN 215743358 U CN215743358 U CN 215743358U
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Abstract
The utility model provides an automatic control system for producing xylose by hydrolysis, which comprises a hydrolysis reaction kettle, a process sulfuric acid storage tank, a PLC (programmable logic controller), an online monitoring mechanism and a field controlled mechanism, wherein the hydrolysis reaction kettle is connected with the process sulfuric acid storage tank; the hydrolysis reaction kettle is respectively communicated with a steam pipeline, a pressure relief pipeline, a liquid inlet pipeline and a liquid discharge pipeline, and the liquid inlet pipeline is communicated with a process sulfuric acid storage tank; the field controlled mechanism comprises a steam pneumatic valve, a pressure relief pneumatic valve, a liquid inlet pneumatic valve and a liquid discharge pneumatic valve; the online monitoring mechanism comprises a temperature transmitter arranged on one side of the hydrolysis reaction kettle, a liquid level transmitter arranged on one side of the process sulfuric acid storage tank and a pressure transmitter on the liquid inlet pipeline; the input end of the PLC is connected with the output end of the on-line monitoring mechanism, the output end of the PLC is connected with the input end of the on-site controlled mechanism, and the PLC receives signals of the on-line monitoring mechanism to control the on-site controlled mechanism to be opened and closed. The utility model has high automation degree, reduces the labor intensity of staff, reduces the fluctuation of process indexes and improves the yield of xylose.
Description
Technical Field
The utility model relates to the field of xylose production equipment, in particular to an automatic control system for producing xylose by hydrolysis.
Background
Xylose is a functional sweetener, is an important raw material for preparing xylitol which is an intermediate of human carbohydrate metabolism, and can be used as a sugar substitute for diabetics. At present, the industrial production of xylose is mainly prepared by hydrolyzing crop straws with acid enzyme. The hydrolysis reaction kettle is used as main production equipment for producing the xylose, the existing hydrolysis reaction kettle is mainly manually operated by staff, the production automation degree is low, the production efficiency of the xylose is low, the process operation error is large, the xylose production process index is unstable, and the high-efficiency production of the xylose cannot be met.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model provides an automatic control system for producing xylose by hydrolysis, which has high automation degree, reduces labor intensity of workers, reduces fluctuation of process indexes, and improves yield of xylose.
In order to solve the technical problem, the utility model provides an automatic control system for producing xylose by hydrolysis, which comprises a hydrolysis reaction kettle, a process sulfuric acid storage tank, a PLC (programmable logic controller), an online monitoring mechanism and a field controlled mechanism;
the hydrolysis reaction kettle is respectively communicated with a steam pipeline, a pressure relief pipeline, a liquid inlet pipeline and a liquid discharge pipeline through connecting end pipes on the hydrolysis reaction kettle, and the other end of the liquid inlet pipeline is communicated with the process sulfuric acid storage tank;
the field controlled mechanism comprises a steam pneumatic valve arranged on a steam pipeline, a pressure relief pneumatic valve arranged on a pressure relief pipeline, a liquid inlet pneumatic valve arranged on a liquid inlet pipeline and a liquid discharge pneumatic valve arranged on a liquid discharge pipeline;
the online monitoring mechanism comprises a temperature transmitter arranged on one side of the hydrolysis reaction kettle, and the temperature transmitter is respectively in communication connection with a steam pneumatic valve and a pressure relief pneumatic valve; the liquid level transmitter is arranged on one side of the process sulfuric acid storage tank and is in communication connection with the liquid inlet pneumatic valve; the pressure transmitter is arranged on the liquid inlet pipeline and is in communication connection with the steam pneumatic valve and the pressure relief pneumatic valve;
the input end of the PLC is connected with the output end of the on-line monitoring mechanism, the output end of the PLC is connected with the input end of the on-site controlled mechanism, and the PLC receives signals of the on-line monitoring mechanism to control the on-site controlled mechanism to be opened and closed.
Furthermore, the PLC is in communication connection with a main control computer through a communication circuit.
Furthermore, a flow meter or/and a metering pump are/is also arranged on the liquid inlet pipeline.
Furthermore, the PLC is also connected with an alarm mechanism which is arranged on the process sulfuric acid storage tank.
Further, the hydrolysis reaction kettle is a high-temperature resistant steel cylinder made of corrosion-resistant metal materials or rubber lining and polytetrafluoroethylene, or an acid-base-resistant and high-temperature-resistant organic material cylinder; acid and alkali resistant material linings are arranged in the liquid inlet pipeline and the liquid discharge pipeline.
Furthermore, manual butterfly valves are respectively arranged on pipelines at two ends of the steam pneumatic valve, the pressure relief pneumatic valve, the liquid inlet pneumatic valve and the liquid discharge pneumatic valve.
Furthermore, a blanking hopper and a stirrer extending into the hydrolysis reaction kettle are arranged at the upper end in the hydrolysis reaction kettle.
The technical scheme of the utility model at least comprises the following technical effects:
1. the automatic control system for xylose hydrolysis production adopts the online monitoring mechanism and the field controlled mechanism which are matched with the hydrolysis reaction kettle, the online controlled mechanism can detect the temperature, the pressure and the liquid inlet and outlet flow rate during the production of the hydrolysis reaction kettle in real time, and the production parameters of the hydrolysis reaction kettle are automatically regulated by the field controlled mechanism, thereby reducing the labor intensity of staff, reducing the production error caused by the operation of the staff, reducing the fluctuation of process indexes and improving the yield of xylose.
2. The hydrolysis reaction kettle and various conveying pipelines have good high temperature resistance and acid and alkali resistance, and the safety performance of hydrolysis equipment is improved.
3. Before entering an automatic control mode, the utility model adopts a manual butterfly valve to close each pipeline; when the system enters an automatic control mode, the manual butterfly valve is opened, and the safety performance of hydrolysis production is improved.
Drawings
FIG. 1 is a schematic flow chart of an automatic control system for hydrolysis in xylose production according to an embodiment of the present invention;
FIG. 2 is a schematic control diagram of an automatic control system for hydrolysis of xylose production according to an embodiment of the present invention.
In the figure:
100. an automatic control system; 1. a hydrolysis reaction kettle; 2. a temperature transmitter; 3. a steam pneumatic valve; 4. a steam line; 5. a pressure relief pneumatic valve; 6. a pressure relief duct; 7. a pressure transmitter; 8. a liquid level transmitter; 9. a process sulfuric acid storage tank; 10. a metering pump; 11. a liquid inlet pneumatic valve; 12. a liquid inlet pipeline; 13. a liquid discharge conduit; 14. a liquid discharge pneumatic valve; 15. connecting end pipes; 16. a flow meter; 17. a PLC controller; 18. an online monitoring mechanism; 19. a field controlled mechanism; 20. an alarm mechanism; 21. a communication circuit; 22. and (5) a master control computer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to fig. 1-2 of the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the utility model, are within the scope of the utility model.
As shown in fig. 1-2: an automatic control system for producing xylose by hydrolysis, wherein the automatic control system 100 comprises a hydrolysis reaction kettle 1, a process sulfuric acid storage tank 9, a PLC (programmable logic controller) 17, an online monitoring mechanism 18 and a field controlled mechanism 19; a feeding hopper and a stirrer extending into the hydrolysis reaction kettle are arranged at the upper end in the hydrolysis reaction kettle 1; the hydrolysis reaction kettle 1 is respectively communicated with a steam pipeline 4, a pressure relief pipeline 6, a liquid inlet pipeline 12 and a liquid discharge pipeline 13 through an upper connecting end pipe 15, and the other end of the liquid inlet pipeline 12 is communicated with the process sulfuric acid storage tank 9; the on-site controlled mechanism 19 comprises a steam pneumatic valve 3 arranged on a steam pipeline, a pressure relief pneumatic valve 5 arranged on a pressure relief pipeline, a liquid inlet pneumatic valve 11 arranged on a liquid inlet pipeline 12 and a liquid discharge pneumatic valve 14 arranged on a liquid discharge pipeline 13; the online monitoring mechanism 18 comprises a temperature transmitter 2 arranged on one side of the hydrolysis reaction kettle 1, and the temperature transmitter 2 is respectively in communication connection with a steam pneumatic valve 3 and a pressure relief pneumatic valve 5; the liquid level transmitter 8 is arranged on one side of the process sulfuric acid storage tank 9, and the liquid level transmitter 8 is in communication connection with the liquid inlet pneumatic valve 11; the pressure transmitter 7 is arranged on the liquid inlet pipeline 12, and the pressure transmitter 7 is in communication connection with the steam pneumatic valve 3 and the pressure relief pneumatic valve 5; the input end of the PLC 17 is connected with the output end of the on-line monitoring mechanism 18, the output end of the PLC 17 is connected with the input end of the controlled mechanism 19 on the control site, and the PLC 17 receives signals of the on-line monitoring mechanism to control the on-site controlled mechanism to be opened and closed.
Specifically, the automatic control system for xylose hydrolysis production adopts an online monitoring mechanism and a field controlled mechanism which are matched with a hydrolysis reaction kettle, the online controlled mechanism can detect the temperature, the pressure and the liquid inlet and outlet flow rate during the production of the hydrolysis reaction kettle in real time, and the field controlled mechanism automatically regulates the production parameters of the hydrolysis reaction kettle, thereby reducing the labor intensity of workers, reducing the production error caused by the operation of the workers, reducing the fluctuation of process indexes and improving the yield of xylose.
Specifically, the PLC controller 17 is in communication connection with a main control computer 22 through a communication circuit. In the embodiment, the PLC is in communication connection with the main control computer, can be controlled by the main control computer, and can be used for setting parameters; the PLC controller is controlled by adopting a periodic cycle scanning mode, and the opening and the reaction speed of various pneumatic valves are regulated and controlled by a main control computer through a PID module.
In another embodiment of the present invention, a flow meter 16 or/and a metering pump 10 is further disposed on the liquid inlet pipe 12, and the flow rate of the sulfuric acid in the process sulfuric acid storage tank is controlled by the flow meter or the flow pump.
In another embodiment of the utility model, the PLC controller 17 is further connected with an alarm mechanism 20, and the alarm mechanism 20 is arranged on the process sulfuric acid storage tank 9; the alarm mechanism can be in communication connection with the liquid level transmitter, so that an alarm is given out when the process sulfuric acid storage tank runs risk of overflowing the tank, and field workers are reminded.
Based on the above embodiments, the hydrolysis reaction kettle 1 is made of corrosion-resistant metal material or rubber lining, a high temperature resistant steel cylinder made of polytetrafluoroethylene, or an acid-base-resistant and high temperature-resistant organic material cylinder; acid and alkali resistant material linings are arranged in the liquid inlet pipeline 12 and the liquid discharge pipeline 13. In the embodiment, the hydrolysis reaction kettle and various conveying pipelines have good high temperature resistance and acid and alkali resistance, and the safety performance of the hydrolysis equipment is improved.
In another embodiment of the present invention, a manual butterfly valve is respectively arranged on the two end pipelines of the steam pneumatic valve 3, the pressure relief pneumatic valve 5, the liquid inlet pneumatic valve 11 and the liquid discharge pneumatic valve 14; before entering an automatic control mode, closing each pipeline by adopting a manual butterfly valve; when the system enters an automatic control mode, the manual butterfly valve is opened, and the safety performance of hydrolysis production is improved.
The use method or the working principle of the utility model are as follows:
the automatic hydrolysis control system starts an automatic control program, opens the liquid inlet pneumatic valve and the metering pump through the PLC controller to feed the process sulfuric acid into the hydrolysis reaction kettle, and automatically closes the metering pump and the liquid inlet pneumatic valve after conveying a certain volume; after liquid feeding is finished, starting to run a temperature raising program, opening a steam pneumatic valve, enabling steam to enter the hydrolysis reaction kettle through a steam pipeline, performing stage boosting, closing the steam pneumatic valve when the pressure reaches a preset pressure and the temperature also reaches a preset temperature, and performing heat preservation treatment; in the heat preservation stage, the steam pneumatic valve is opened again to supplement steam to increase the pressure and the temperature by the pressure reduction or temperature reduction system so as to ensure the stability of the reaction condition; the automatic control system synchronously operates a pressure relief program during automatic control, the pressure relief program is excited after the pressure exceeds a set maximum pressure value, and the system automatically alarms and opens a pressure relief pneumatic valve to perform air exhaust and pressure relief.
In the present invention, unless otherwise explicitly specified or limited, for example, it may be fixedly attached, detachably attached, or integrated; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.
The foregoing is a preferred embodiment of the present invention, and it should be noted that it would be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the utility model, and such modifications and enhancements are also considered to be within the scope of the utility model.
Claims (7)
1. An automatic control system for producing xylose by hydrolysis is characterized in that: the automatic control system (100) comprises a hydrolysis reaction kettle (1), a process sulfuric acid storage tank (9), a PLC (programmable logic controller) controller (17), an online monitoring mechanism (18) and a field controlled mechanism (19);
the hydrolysis reaction kettle (1) is respectively communicated with a steam pipeline (4), a pressure relief pipeline (6), a liquid inlet pipeline (12) and a liquid discharge pipeline (13) through an upper connecting end pipe (15), and the other end of the liquid inlet pipeline (12) is communicated with the process sulfuric acid storage tank (9);
the field controlled mechanism (19) comprises a steam pneumatic valve (3) arranged on a steam pipeline, a pressure relief pneumatic valve (5) arranged on a pressure relief pipeline, a liquid inlet pneumatic valve (11) arranged on a liquid inlet pipeline (12), and a liquid drainage pneumatic valve (14) arranged on a liquid drainage pipeline (13);
the online monitoring mechanism (18) comprises a temperature transmitter (2) arranged on one side of the hydrolysis reaction kettle (1), and the temperature transmitter (2) is respectively in communication connection with a steam pneumatic valve (3) and a pressure relief pneumatic valve (5); the liquid level transmitter (8) is arranged on one side of the process sulfuric acid storage tank (9), and the liquid level transmitter (8) is in communication connection with the liquid inlet pneumatic valve (11); the pressure transmitter (7) is arranged on the liquid inlet pipeline (12), and the pressure transmitter (7) is in communication connection with the steam pneumatic valve (3) and the pressure relief pneumatic valve (5);
the input end of the PLC (17) is connected with the output end of the on-line monitoring mechanism (18), the output end of the PLC (17) is connected with the input end of the on-site controlled mechanism (19), and the PLC (17) receives signals of the on-line monitoring mechanism to control the on-site controlled mechanism to be opened and closed.
2. An automated control system for the production of xylose by hydrolysis according to claim 1, characterized by: the PLC (17) is in communication connection with a main control computer (22) through a communication circuit.
3. An automated control system for the production of xylose by hydrolysis according to claim 1, characterized by: the liquid inlet pipeline (12) is also provided with a flowmeter (16) or/and a metering pump (10).
4. An automated control system for the production of xylose by hydrolysis according to claim 1, characterized by: the PLC (17) is also connected with an alarm mechanism (20); the alarm mechanism (20) is arranged on the process sulfuric acid storage tank (9).
5. An automatic control system for the production of xylose by hydrolysis according to any one of claims 1 to 4, characterized by: the hydrolysis reaction kettle (1) is a high-temperature resistant steel cylinder made of corrosion-resistant metal materials or rubber lining and polytetrafluoroethylene, or an acid-base-resistant and high-temperature-resistant organic material cylinder; acid and alkali resistant material linings are arranged in the liquid inlet pipeline (12) and the liquid discharge pipeline (13).
6. An automated control system for the production of xylose by hydrolysis according to claim 5, characterized by: and the steam pneumatic valve (3), the pressure relief pneumatic valve (5), the liquid inlet pneumatic valve (11) and the liquid discharge pneumatic valve (14) are respectively provided with a manual butterfly valve on the two end pipelines.
7. An automated control system for the production of xylose by hydrolysis according to claim 5, characterized by: the upper end in the hydrolysis reaction kettle (1) is provided with a blanking hopper and a stirrer extending into the hydrolysis reaction kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122069121.XU CN215743358U (en) | 2021-08-30 | 2021-08-30 | Automatic control system for producing xylose by hydrolysis |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122069121.XU CN215743358U (en) | 2021-08-30 | 2021-08-30 | Automatic control system for producing xylose by hydrolysis |
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| CN215743358U true CN215743358U (en) | 2022-02-08 |
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| CN202122069121.XU Active CN215743358U (en) | 2021-08-30 | 2021-08-30 | Automatic control system for producing xylose by hydrolysis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115318216A (en) * | 2022-08-26 | 2022-11-11 | 焦作市华康糖醇科技有限公司 | Hydrolysis reaction kettle device and automatic control method thereof |
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2021
- 2021-08-30 CN CN202122069121.XU patent/CN215743358U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115318216A (en) * | 2022-08-26 | 2022-11-11 | 焦作市华康糖醇科技有限公司 | Hydrolysis reaction kettle device and automatic control method thereof |
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