CN213148655U - Esterification rate analysis device - Google Patents
Esterification rate analysis device Download PDFInfo
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- CN213148655U CN213148655U CN202021753711.3U CN202021753711U CN213148655U CN 213148655 U CN213148655 U CN 213148655U CN 202021753711 U CN202021753711 U CN 202021753711U CN 213148655 U CN213148655 U CN 213148655U
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Abstract
The utility model provides an esterification rate analysis device, which comprises a booster pump, a density flow sensor, a control calculation unit, a discharge valve, an upstream valve and a downstream valve; the density flow sensor is positioned on one side of an output port of the booster pump; the booster pump, the density flow sensor and the discharge valve are communicated in series to form a bypass branch, and the bypass branch is communicated with the main process pipeline of the esterification reaction in parallel; the bypass branch comprises an upstream connecting pipe, a downstream connecting pipe booster pump, a density flow sensor and a discharge valve which are arranged between the upstream connecting pipe and the downstream connecting pipe; the upstream valve is arranged on the upstream connecting pipe, and the downstream valve is arranged on the downstream connecting pipe; the density flow sensor is in communication connection with the control computing unit. Because the bypass branch is communicated with the process main pipeline in parallel, when devices in the bypass branch have faults, the booster pump, the upstream valve and the downstream valve can be closed, and the esterification rate analysis device can be maintained on line, so that the normal operation of production is not influenced in the maintenance process.
Description
Technical Field
The utility model relates to a rate of esterification measures the field, in particular to rate of esterification analytical equipment.
Background
An esterification rate analysis device is needed to monitor the esterification rate of the materials in the esterification reaction process. The existing esterification rate analysis device is shown in fig. 1 and fig. 2 and comprises a gear pump 1, a density flow sensor 2 and a control calculation unit 3, wherein the gear pump 1 and the density flow sensor 2 are both installed on a main process pipeline 6, the main process pipeline 6 is connected between a first esterification kettle 7 and a second esterification kettle 8, and the control calculation unit 3 is installed in a central control room. The central control room is also provided with a project distributed control system 4 and an operation station 5, and the density flow sensor 2, the control calculation unit 3, the project distributed control system 4 and the operation station 5 are sequentially connected through a power line and a signal line. During measurement, the gear pump 1 is used for increasing the pressure behind the pump to prevent gas-liquid two phases; the density flow sensor 2 is located on one side of an output port of the gear pump 1, namely, a position behind the pump, the density flow sensor 2 sends the measured density, flow and temperature to the control calculation unit 3, and the control calculation unit 3 calculates the esterification rate according to the received density, flow and temperature and a preset esterification rate calculation formula.
However, the conventional esterification rate analyzing apparatus is installed in the main pipe 6 of the process, and when the gear pump 1 or the density flow rate sensor 2 has a failure, the online maintenance cannot be performed, and the gear pump 1 or the density flow rate sensor 2 must be maintained after the production is stopped. Some esterification reactions are a process of 'one-to-two' or 'one-to-three', two or three production lines can be arranged at the downstream of the reaction kettle, and if the production is stopped for maintaining the esterification rate analysis device, the production efficiency is seriously influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides an esterification rate analytical equipment to solve current esterification rate analytical equipment and can not carry out the technical problem of online maintenance.
In order to solve the technical problem, the utility model provides an esterification rate analysis device, which comprises a booster pump, a density flow sensor, a control calculation unit, a discharge valve, an upstream valve and a downstream valve;
the density flow sensor is positioned on one side of an output port of the booster pump;
the booster pump, the density flow sensor and the discharge valve are communicated in series to form a bypass branch, and the bypass branch is used for being communicated with a process main pipeline of the esterification reaction in parallel;
the bypass branch comprises an upstream connecting pipe and a downstream connecting pipe, the material in the bypass branch flows from the upstream connecting pipe to the downstream connecting pipe, and the booster pump, the density flow sensor and the discharge valve are arranged between the upstream connecting pipe and the downstream connecting pipe;
the upstream valve is arranged on the upstream connecting pipe, and the downstream valve is arranged on the downstream connecting pipe;
the density flow sensor is in communication connection with the control computing unit.
Optionally, the drift diameters of the sections of connecting pipes used by the bypass branch are equal and smaller than the drift diameter of the main process pipe; the aperture specifications of the booster pump, the density flow sensor and the discharge valve are all matched with the drift diameter of the connecting pipe.
Optionally, the bypass branch further comprises a pressure transmitter and a regulating valve, wherein the pressure transmitter and the regulating valve are sequentially communicated in series with one side of an output port of the booster pump.
Optionally, the booster pump is a gear pump.
Optionally, the upstream valve and the downstream valve are both three-way valves, the upstream valve is installed at a parallel node position of the upstream connecting pipe and the process main pipe, and the downstream valve is installed at a parallel node position of the downstream connecting pipe and the process main pipe.
Optionally, the three-way valve includes a first port, a second port, a third port and an on-off valve; the drift diameter of the first port is equal to that of the second port, and the drift diameter of the third port is smaller than that of the first port; the first port and the second port are respectively communicated with the process main pipeline of the esterification reaction; the third port communicates with the bypass branch.
Optionally, the connecting pipe is a double-layer jacket sleeve, an inner layer of the jacket sleeve is communicated with the process main pipeline, and an outer layer of the jacket sleeve is communicated with a heating medium pipeline for heating.
Optionally, the heating medium pipeline comprises a heating medium input port and a heating medium output port; the outer layers of the jacket sleeves at the two ends of the bypass branch are respectively provided with a heat medium inlet and a heat medium outlet; the heat medium input port is communicated with the heat medium inlet, and the heat medium output port is communicated with the heat medium outlet.
Optionally, the heating medium input port and the heating medium output port are respectively provided with a heating medium stop valve.
Optionally, after the bypass branch and the main process pipe are connected in parallel, the discharge valve is installed at a position of the bypass branch closest to the ground.
The utility model provides a pair of esterification rate analytical equipment, bypass branch road and the parallelly connected intercommunication of the technology trunk line of esterification reaction, when the device in the bypass branch road breaks down, can close booster pump, upper reaches valve and low reaches valve, and online maintenance esterification rate analytical equipment makes its maintenance process not influence the normal clear of production.
Drawings
FIG. 1 is a schematic view of a partial structure of an esterification rate analyzing apparatus in the prior art, which is installed on site, wherein arrows in a pipeline indicate the flow direction of materials;
FIG. 2 is a schematic view of a partial structure of an esterification rate analyzing apparatus in a central control room in the prior art;
fig. 3 is a schematic view of a local structure of an esterification rate analyzer installed on site according to an embodiment of the present invention, and an arrow in a pipeline indicates a material flow direction.
[ reference numerals are described below ]:
a gear pump-1, a density flow sensor-2, a control calculation unit-3, a project distributed control system-4, an operation station-5, a main process pipeline-6, a first esterification kettle-7 and a second esterification kettle-8;
booster pump-101, density flow sensor-102, discharge valve-103, upstream valve 104, downstream valve-105, pressure transmitter-106, regulating valve-107, bypass branch-10; a main process pipe-11; esterification kettle-12; esterification two-kettle-13.
Detailed Description
In order to make the objects, advantages and features of the present invention clearer, the following describes an esterification rate analyzing apparatus provided by the present invention in further detail with reference to the accompanying drawings. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.
Referring to fig. 3, the present invention provides an esterification rate analyzing apparatus including a booster pump 101, a density flow sensor 102, a control computing unit, a discharge valve 103, an upstream valve 104, and a downstream valve 105; the density flow sensor 102 is positioned on one side of an output port of the booster pump 101; the booster pump 101, the density flow sensor 102 and the discharge valve 103 are communicated in series to form a bypass branch 10, and the bypass branch 10 is used for being communicated with a main process pipeline 11 of the esterification reaction in parallel; the bypass branch 10 comprises an upstream connecting pipe and a downstream connecting pipe, the material in the bypass branch 10 flows from the upstream connecting pipe to the downstream connecting pipe, and the booster pump 101, the density flow sensor 102 and the discharge valve 103 are installed between the upstream connecting pipe and the downstream connecting pipe; the density flow sensor 102 is communicatively coupled to the control computing unit. The booster pump 101 can be a gear pump or a plunger pump, and the booster pump 101 is used for pressurizing high-temperature liquid and preventing the fluctuation of the measurement result of the density flow sensor 102 caused by gas-liquid two phases of materials; said upstream valve 104 and said downstream valve 105 may be arranged at the parallel intersection of said bypass branch 10 and the main process pipe 11 of the esterification reaction; the upstream valve 104 and the downstream valve 105 may also be disposed at two sides of the bypass branch 10 at a distance from the intersection point, that is, the upstream valve 104 may be installed at any position in the middle of the upstream connecting pipe, the downstream valve 105 may be installed at any position in the middle of the downstream connecting pipe, a feed port of the upstream connecting pipe may be connected in parallel with the process main pipe 11 through a three-way joint, and a discharge port of the downstream connecting pipe may be connected in parallel with the process main pipe 11 through a three-way joint; main process line 11 is connected between first esterification tank 12 and second esterification tank 13.
In the esterification rate analyzer provided by this embodiment, the bypass branch 10 is connected in parallel with the main process pipe 11 for esterification reaction, and when a device in the bypass branch 10 fails, the booster pump 101, the upstream valve 104 and the downstream valve 105 may be closed, so as to maintain the esterification rate analyzer on line, and the maintenance process of the esterification rate analyzer does not affect the normal operation of production.
Optionally, as shown in fig. 3, the diameters of the sections of connecting pipes used by the bypass branch 10 are equal and smaller than the diameter of the main process pipe 11; the caliber specifications of the booster pump 101, the density flow sensor 102 and the discharge valve 103 are all matched with the drift diameter of the connecting pipe.
In the solution provided in this embodiment, the drift diameter of each section of connecting pipe used by the bypass branch 10 is small, so that the caliber specifications of the booster pump 101, the density flow sensor 102 and the discharge valve 103 are all small, and the smaller the drift diameter or the caliber is, the lower the price of the corresponding product is generally, thereby reducing the cost of the esterification rate analysis device; the models of the connecting pipe, the booster pump 101, the density flow sensor 102 and the discharge valve 103 are unified, so that the purchasing and the management are convenient.
Optionally, as shown in fig. 3, the bypass branch 10 further includes a pressure transmitter 106 and a regulating valve 107, and the pressure transmitter 106 and the regulating valve 107 are sequentially connected in series to one side of an output port of the booster pump 101.
In the solution provided in this embodiment, the pressure value displayed by the pressure transmitter 106 can be used by a process worker to better control the pressure at the downstream of the booster pump 101, and the appropriate pump frequency can be set on the premise of preventing the material from generating gas-liquid two-phase, without setting a large value based on experience, so as to achieve the energy-saving effect in long-term use.
Alternatively, as shown in fig. 3, the booster pump 101 is a gear pump. In the scheme that this embodiment provided, gear pump's simple structure, it is convenient to maintain, long service life, antipollution ability reinforce.
Optionally, as shown in fig. 3, the upstream valve 104 and the downstream valve 105 are both three-way valves, the upstream valve 104 is installed at a parallel node position of the upstream connecting pipe and the main process pipe 11, and the downstream valve 105 is installed at a parallel node position of the downstream connecting pipe and the main process pipe 11. The bypass branch 10 and the main process line 11 of the esterification reaction can be conveniently connected by using a three-way valve, and the three-way valve has the function of opening and closing.
Alternatively, as shown in fig. 3, the three-way valve includes a first port, a second port, a third port, and an on-off valve; the drift diameter of the first port is equal to that of the second port, and the drift diameter of the third port is smaller than that of the first port; the first port and the second port are respectively communicated with the main process pipeline 11 of the esterification reaction; the third port communicates with the bypass branch 10.
Specifically, the three-way valve may have a specification of DNx/DN25/DNx, DNx is the drift diameter of the main process pipe 11 for esterification, DN25 is the drift diameter of each connecting pipe in the bypass branch 10, and x has a value greater than 25. The specification of the three-way valve is fixed, and standardized management can be facilitated.
Optionally, the connecting pipe is a double-layer jacket sleeve, an inner layer of the jacket sleeve is communicated with the process main pipe 11, and an outer layer of the jacket sleeve is communicated with a heating medium pipeline for heating. The material in the inner layer of the jacketed pipe may be heated using the jacketed pipe.
Optionally, the heating medium pipeline comprises a heating medium input port and a heating medium output port; the outer layers of the jacket sleeves at the two ends of the bypass branch 10 are respectively provided with a heat medium inlet and a heat medium outlet; the heat medium input port is communicated with the heat medium inlet, and the heat medium output port is communicated with the heat medium outlet.
In the scheme provided by the embodiment, the heating medium flows from one end of the bypass branch 10 to the other end, and a heating path is added.
Optionally, the heating medium input port and the heating medium output port are respectively provided with a heating medium stop valve. Specifically, a heating medium stop valve with specification DN20 can be selected, namely the drift diameter of the heating medium pipeline is 20 mm.
Optionally, as shown in fig. 3, after the bypass branch 10 is connected in parallel with the main process pipe 11, the discharge valve 103 is installed at the position of the pipe where the bypass branch 10 is closest to the ground. The arrangement can facilitate discharging the materials in the bypass branch 10, and after the materials are discharged, the damaged parts are maintained. Specifically, the discharge valve 103 may have a specification of DN25/DN 20.
As shown in fig. 3, in the using process of the esterification rate analyzing apparatus, if the gear pump, the density flow sensor 102, the regulating valve 107, etc. on the bypass branch 10 have faults, the gear pump needs to be removed for maintenance, and the three-way valve at the inlet and the outlet of the bypass branch 10 is closed, and the material in the bypass pipe is evacuated through the discharge valve 103, so that the faulty meter equipment can be removed; and after the instrument equipment without faults is installed in place again, the discharge valve 103 is closed, the three-way valve is opened, the gear pump is started again, and the circulation of the materials and the measurement of the esterification rate analysis device are restored. Therefore, the whole process of online maintenance can be completed, and the defect that the fault of the instrument equipment cannot be maintained online in the original product scheme is overcome.
To sum up, the utility model provides a pair of esterification rate analytical equipment, bypass branch road 10 and the parallelly connected intercommunication of the technology trunk line 11 of esterification reaction, when the device in bypass branch road 10 breaks down, can close booster pump 101, upper reaches valve 104 and low reaches valve 105, and online maintenance esterification rate analytical equipment makes its maintenance process not influence the normal clear of production.
The above description is only for the purpose of describing the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, and any variations and modifications made by those skilled in the art based on the above disclosure are within the scope of the claims of the present invention.
Claims (10)
1. An esterification rate analyzing device is characterized by comprising a booster pump, a density flow sensor, a control calculation unit, a discharge valve, an upstream valve and a downstream valve;
the density flow sensor is positioned on one side of an output port of the booster pump;
the booster pump, the density flow sensor and the discharge valve are communicated in series to form a bypass branch, and the bypass branch is used for being communicated with a process main pipeline of the esterification reaction in parallel;
the bypass branch comprises an upstream connecting pipe and a downstream connecting pipe, the material in the bypass branch flows from the upstream connecting pipe to the downstream connecting pipe, and the booster pump, the density flow sensor and the discharge valve are arranged between the upstream connecting pipe and the downstream connecting pipe;
the upstream valve is arranged on the upstream connecting pipe, and the downstream valve is arranged on the downstream connecting pipe;
the density flow sensor is in communication connection with the control computing unit.
2. An esterification rate analyzer according to claim 1, wherein the bypass branch has the same diameter as each connecting pipe and is smaller than the main process pipe; the aperture specifications of the booster pump, the density flow sensor and the discharge valve are all matched with the drift diameter of the connecting pipe.
3. The esterification rate analysis device according to claim 1, wherein the bypass branch further comprises a pressure transmitter and a regulating valve, and the pressure transmitter and the regulating valve are sequentially connected in series and communicated with one side of the output port of the booster pump.
4. The apparatus according to claim 1, wherein the booster pump is a gear pump.
5. The apparatus according to claim 1, wherein the upstream valve and the downstream valve are three-way valves, the upstream valve is installed at a parallel node of the upstream connection pipe and the main process pipe, and the downstream valve is installed at a parallel node of the downstream connection pipe and the main process pipe.
6. The apparatus according to claim 5, wherein the three-way valve comprises a first port, a second port, a third port and an on-off valve; the drift diameter of the first port is equal to that of the second port, and the drift diameter of the third port is smaller than that of the first port; the first port and the second port are respectively communicated with the process main pipeline of the esterification reaction; the third port communicates with the bypass branch.
7. The apparatus according to claim 2, wherein the connecting pipe is a double-layered jacket pipe, an inner layer of the jacket pipe communicates with the main process pipe, and an outer layer of the jacket pipe communicates with a heating medium pipe for heating.
8. The esterification rate analysis device according to claim 7, wherein the heating medium pipe includes a heating medium inlet and a heating medium outlet; the outer layers of the jacket sleeves at the two ends of the bypass branch are respectively provided with a heat medium inlet and a heat medium outlet; the heat medium input port is communicated with the heat medium inlet, and the heat medium output port is communicated with the heat medium outlet.
9. The apparatus for analyzing an esterification rate according to claim 8, wherein a heat medium stop valve is provided for each of the heat medium inlet and the heat medium outlet.
10. An apparatus according to claim 1, wherein said drain valve is installed at a position of said bypass branch closest to the ground after said bypass branch is connected in parallel with said main process pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021753711.3U CN213148655U (en) | 2020-08-20 | 2020-08-20 | Esterification rate analysis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021753711.3U CN213148655U (en) | 2020-08-20 | 2020-08-20 | Esterification rate analysis device |
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| Publication Number | Publication Date |
|---|---|
| CN213148655U true CN213148655U (en) | 2021-05-07 |
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| CN202021753711.3U Active CN213148655U (en) | 2020-08-20 | 2020-08-20 | Esterification rate analysis device |
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| CN (1) | CN213148655U (en) |
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- 2020-08-20 CN CN202021753711.3U patent/CN213148655U/en active Active
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