CN215196939U

CN215196939U - Chemical industry reation kettle convenient to detect and product quality control

Info

Publication number: CN215196939U
Application number: CN202121279005.4U
Authority: CN
Inventors: 安少锋; 王晓磊; 李华青; 张立博; 王伟燕; 赵一宁; 李兴美; 押玉荣; 蔡洪雷
Original assignee: Jiacheng Environmental Protection Engineering Co ltd
Current assignee: Hebei Yuehai Water Group Co.,Ltd.
Priority date: 2021-06-08
Filing date: 2021-06-08
Publication date: 2021-12-17
Anticipated expiration: 2031-06-08

Abstract

The utility model relates to a chemical industry reation kettle especially indicates a chemical industry reation kettle convenient to detect and product quality control. The device comprises a reaction kettle body provided with an inlet and an outlet, and a motor for controlling the operation of a stirring device in the reaction kettle body, wherein a dosing barrel is arranged on one side of the reaction kettle body and is communicated with the reaction kettle body through a dosing pipe; the bottom and the top of the reaction kettle body are respectively provided with a circulation port and a feed port, the circulation port is communicated with the feed port through a circulation pipeline and a variable frequency circulating pump, the on-line detection equipment is electrically connected with an automatic control device arranged outside the reaction kettle body, a trough is arranged outside the feed port at the top of the inner cavity of the reaction kettle body, and a signal receiving end of the on-line detection equipment is positioned in the trough. The utility model provides an among the prior art detection device dismantle with the maintenance degree of difficulty big, the poor scheduling problem of real behaviour nature, have the life who has prolonged detection device's signal receiving terminal, increased measuring accuracy, avoid producing to deposit and pile up, guarantee to add advantages such as unobstructed of medicine pipeline.

Description

Chemical industry reation kettle convenient to detect and product quality control

Technical Field

The utility model relates to a chemical industry reation kettle especially indicates a chemical industry reation kettle convenient to realize product quality control and detection.

Background

The broad understanding of the reaction kettle is that the reaction kettle is a container for physical or chemical reaction, and the heating, evaporation, cooling and low-speed mixing functions required by the process are realized through the structural design and parameter configuration of the container. The structure of the reactor is generally composed of a kettle body, a transmission device, a stirring device, a heating device, a cooling device and a sealing device, the design structure and parameters of the reactor are different according to different production processes, operating conditions and the like, and the reactor belongs to non-standard container equipment.

At present, the reaction kettle is widely applied to various industries such as petroleum, chemical industry, rubber, pesticides, dyes, medicines, foods and the like, so that the reaction kettle has a great application value. The current design references include pressure vessels (GB150.1-2011), steel welded atmospheric vessels (NB/T47003.1-2009), and the like. The above standards mainly aim at the material, welding, strength, corrosion resistance and the like of the reaction kettle, and have fewer requirements on the combination of the reaction kettle and the actual process.

Patent documents retrieved by the applicant include:

patent document CN205850835U discloses a reactor in which a temperature measuring position is located at the bottom of the reactor, but since the bottom of the reactor has a recessed structure, the thermometer cannot measure the bottommost liquid in real time, and therefore, the parameter change of the bottommost liquid immediately after the reactor starts operating cannot be accurately detected.

Patent document CN208320796U discloses a stirred tank reactor including an external circulation circuit, wherein the stirred tank reactor has a circulation line, but no detection device is installed for mixing and stirring functions.

Patent document No. 109652306a discloses an automatic temperature-control type reaction vessel for biological engineering, in which a detection device is installed inside the reaction vessel, thereby accurately and timely adjusting parameters in the reaction vessel. However, the biggest problem in the prior art is that once the detection device of the reaction kettle breaks down, the detection device positioned in the reaction kettle is difficult to disassemble and maintain, and the actual operability is poor.

In the application process of the chemical reaction kettle, strict requirements are placed on the adding sequence, adding speed and adding amount of various medicaments, and when the adding sequence, adding speed and adding amount deviate from a set value, adverse effects are generated on a final product. In the process, the volume of liquid in the reaction kettle is continuously increased, and the parameters in the reaction kettle need to be detected in the whole process, so that the accurate control, the clear steps, the quick and accurate detection and the like are realized.

Although the reaction kettle is subjected to multiple technical improvements in the practical application process, problems still exist, for example, an online detection device of the reaction kettle is mostly arranged at the top, and the initial bottom material of the reaction kettle cannot be detected. When the detection probe goes deep into the bottom of the reaction kettle, the installation, maintenance and operation of stirring in the reaction kettle are affected, and meanwhile, the replacement and maintenance of the probe are inconvenient.

In the actual operation process, the detection device is arranged on the circulating pipeline, the condition change in the reaction kettle can be detected in real time, but in the actual operation process of continuously adding liquid, in order to ensure the consistency between the detected liquid on the circulating pipeline and the interior of the reaction kettle, the circulating flow is large, so that the impact on a probe of a detection instrument is large, particularly, when substances (such as iron oxide red) in the solution are in a particle form, the probe of the detector is easy to damage, the detection accuracy is influenced, and the difference between the quality of a final product and an expected set value is large.

SUMMERY OF THE UTILITY MODEL

The utility model provides a chemical industry reation kettle convenient to realize detecting so that adjustment adds the dose.

The utility model discloses an overall technology structure is:

the chemical reaction kettle convenient for detection and product quality control comprises a reaction kettle body provided with an inlet and an outlet, and a motor for controlling the operation of a stirring device in the reaction kettle body, wherein a dosing barrel is arranged on one side of the reaction kettle body, and the dosing barrel is communicated with the reaction kettle body through a dosing pipe; set up circulation mouth and feed inlet respectively at reation kettle body bottom and top, through circulating line, frequency conversion circulating pump intercommunication between circulation mouth and the feed inlet, on-line measuring equipment's signal output part is connected with the automatic control device electricity that sets up in the external portion of reation kettle, and the feed inlet outside at reation kettle body inner chamber top is equipped with the silo, and on-line measuring equipment's signal receiving terminal is located the silo.

The specific technical concept of the utility model is that:

in order to ensure the volume of the feed liquid in the trough and meet the detection requirement, the preferable technical implementation means is that an overflow port is arranged on the trough.

In order to enable the dosing liquid to flow slowly and to flow into the reaction kettle by means of gravity when dosing is suspended for a long time, and avoid the phenomenon that the dosing pipe is blocked due to deposition accumulation, the preferred technical implementation means is that the dosing pipe comprises an ascending section of which the lower end is communicated with the dosing barrel, and an inclined section between dosing ports which are arranged on the lower end of the ascending section and the reaction kettle body are respectively communicated.

More preferably, the included angle between the ascending section and the inclined section is 30-60 degrees.

In order to enable the feed liquid in the trough to meet the detection requirement and simultaneously facilitate the production, the preferable technical implementation means is that the volume of the trough is 0.1-1% of the volume of the reaction kettle body.

The utility model discloses substantive characteristics and the technological progress that is showing that gain lie in:

1. the utility model discloses the liquid intensive mixing in the reation kettle can be guaranteed to well circulation pipeline, actual index parameter in the reation kettle can be represented.

2. Due to the installation of the trough, the impact of the liquid in the circulating pipeline on the detection probe is reduced, the service life of the probe is prolonged, and the measurement accuracy is improved.

3. The structural design of the inclined section in the dosing pipe can ensure that the dosing liquid can flow into the reaction kettle by gravity when the flow rate of the dosing liquid is slow and the dosing intermittent time is suspended, so that the sedimentation accumulation is avoided, and the smoothness of a dosing pipeline is ensured.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a top view of fig. 1.

Fig. 3 is a view from a-a of fig. 1.

The reference numbers in the drawings are as follows:

1. a reaction kettle; 2. a medicine adding barrel; 3. a medicine feeding pipe; 4. a medicine adding port; 5. a circulation port; 6. a circulation pump; 7. a circulation line; 8. an automatic control device; 9. a feed inlet; 10. an overflow port; 11. and (4) online detection equipment.

Detailed Description

The accompanying drawings are included to provide a further understanding of the embodiments of the invention, and are incorporated in and constitute a part of this specification.

The whole structure of the embodiment is shown in the figure, and comprises a reaction kettle body 1 provided with an inlet and an outlet, and a motor for controlling the operation of a stirring device in the reaction kettle body 1, wherein a dosing barrel 2 is arranged on one side of the reaction kettle body 1, and the dosing barrel 2 is communicated with the reaction kettle body 1 through a dosing pipe 3; set up circulation mouth 5 and feed inlet 9 respectively at the reation kettle body 1 bottom and top, through circulation pipeline 7, variable frequency circulating pump 6 intercommunication between circulation mouth 5 and the feed inlet 9, the signal output part of on-line measuring equipment 11 is connected with the automatic control device 8 electricity that sets up in the reation kettle body 1 outside, the feed inlet 9 outside at the 1 inner chamber top of reation kettle body is equipped with the silo, the signal receiving terminal of on-line measuring equipment 11 is located the silo.

The material groove is provided with an overflow port 10.

The dosing pipe 3 comprises an ascending section of which the lower end is communicated with the dosing barrel 2 and an inclined section which is respectively communicated with the lower end of the ascending section and a dosing port 4 arranged on the reaction kettle body 1.

The included angle between the ascending section and the inclined section is 45 degrees.

The trough solvent is 0.1-1% of the volume of the reaction kettle body 1.

For verifying the technical effect of the utility model, the applicant utilizes this reation kettle to carry out following test to the production of using comparatively extensive iron oxide red product in the chemical products:

with an effective volume of 10m³The reaction kettle is used for preparing the iron oxide red, the detection equipment is arranged on a circulating pipeline, and all the medicine adding pipelines are horizontal, flat and vertical. In the preparation process, the flow on the circulating pipeline is continuously constant, the probe is flushed, after about 2 weeks, the probe is damaged due to continuous abrasion of granular iron oxide red in the solution, the detected numerical value fluctuates, and after the unstable detected numerical value is fed back to the automatic control device, wrong guidance is generated on the dosage, the dosage rate and the like, and the normal production is influenced.

During the probe replacement and maintenance period, each medicine feeding pipeline stops running, part of the medicine deposits on the medicine feeding pipeline, oxidation reaction (for example, ferrous iron is oxidized into ferric iron) occurs in a long time, and when the system is restarted, due to the problems, the medicine feeding amount and the medicine property are not consistent with the design state, and the performance of the final product is influenced. The main indexes of the product part are shown in the following table, and the product part does not reach the A-grade standard (type I and type a).

The reaction kettle in the utility model has the volume of 1L, the length, width and height of 1:1:2, the detection device is provided with the overflow port and the feed inlet, and the on-line detection equipment is positioned inside the detection device and positioned below the overflow port and above the feed inlet. The medicine adding pipeline and the medicine adding port are in an inclined state, and the angle is 45 degrees. The flow of the circulating pump is changed even though the liquid volume in the reaction kettle is changed, and V is maintained₁the/Q is 60 seconds, so that the real-time detection of the liquid in the reaction kettle is ensured. In the operation process, the detection probe can still stably output a detection value after continuously operating for 5 months, and the dosage rate are accurately guided by the automatic control device. In-process, meet production and overhaul, stop adding the medicine mouth, the medicament that adds in the medicine pipeline can rely on gravity to flow into reation kettle, does not produce the siltation. When the system is started again, the dosing pipeline is smooth, the dosed medicament can be ensured not to be polluted, and the stable property of the final product is ensured. The main indexes of the product part are shown in the following table and all reach the A-grade standard (type I and type a).

Claims

1. The chemical reaction kettle convenient for detection and product quality control comprises a reaction kettle body (1) provided with an inlet and an outlet and a motor used for controlling the operation of a stirring device in the reaction kettle body (1), wherein a dosing barrel (2) is arranged on one side of the reaction kettle body (1), and the dosing barrel (2) is communicated with the reaction kettle body (1) through a dosing pipe (3); the automatic feeding device is characterized in that a circulation port (5) and a feeding port (9) are respectively arranged at the bottom and the top of a reaction kettle body (1), the circulation port (5) is communicated with the feeding port (9) through a circulation pipeline (7) and a variable-frequency circulation pump (6), a signal output end of an online detection device (11) is electrically connected with an automatic control device (8) arranged outside the reaction kettle body (1), a trough is arranged on the outer side of the feeding port (9) at the top of an inner cavity of the reaction kettle body (1), and a signal receiving end of the online detection device (11) is positioned in the trough.

2. The chemical reaction kettle convenient for detection and product quality control according to claim 1, wherein the material tank is provided with an overflow port (10).

3. The chemical reaction kettle convenient for detection and product quality control according to claim 1, wherein the dosing pipe (3) comprises an ascending section with a lower end communicated with the dosing barrel (2), and an inclined section respectively communicated with the lower end of the ascending section and a dosing port (4) formed on the reaction kettle body (1).

4. The chemical reaction kettle convenient for detection and product quality control according to claim 3, wherein the included angle between the ascending section and the inclined section is 30-60 °.

5. The chemical reaction kettle convenient for detection and product quality control according to claim 1 or 2, characterized in that the volume of the material groove is 0.1-1% of the volume of the reaction kettle body (1).