CN214011156U

CN214011156U - Detection device for detecting constant phenol in acetone

Info

Publication number: CN214011156U
Application number: CN202022643648.4U
Authority: CN
Inventors: 郑永耀
Original assignee: Shiyou Chemical Yangzhou Co ltd
Current assignee: Shiyou Chemical Yangzhou Co ltd
Priority date: 2020-11-16
Filing date: 2020-11-16
Publication date: 2021-08-20
Anticipated expiration: 2030-11-16

Abstract

The utility model discloses a detection device for detecting constant phenol in acetone, which comprises an iron stand, a titration bottle and a dropper; a refrigerating box is arranged on the base platform of the iron stand, a titration bottle is arranged in the refrigerating box, and a stirring rod is arranged at the bottom of the titration bottle; a dropper is fixed on the vertical rod of the iron frame through two iron clamps, the dropper is respectively communicated with the first water pipe, the liquid level regulating valve and the second water pipe through a three-way pipe, the liquid level regulating valve is connected with the third motor through an electric wire, a dripping speed regulating valve is arranged at the lower end of the dropper, and the dripping speed regulating valve is connected with the second motor. The utility model utilizes the principle that sodium hydroxide does not react with acetone but reacts with constant phenol in the acetone; the liquid level regulating valve and the dripping speed regulating valve are utilized, the control of the dripping speed and the dripping flow during the detection of the constant phenol in the acetone is realized, the operation is simple, and the error is small.

Description

Detection device for detecting constant phenol in acetone

Technical Field

The utility model belongs to the technical field of acetone, it is specific, relate to a detection device for detecting constant phenol in acetone.

Background

The acetone is an important industrial raw material in China, can be used as a solvent II to be widely applied to industries such as explosives, plastics, rubber, fibers, leatherware, grease, paint spraying and the like, can also be used as an important raw material for synthesizing substances such as ketene, acetic anhydride, iodoform, polyisoprene rubber, methyl methacrylate, chloroform, epoxy resin and the like, and even can be frequently used as a raw material of drugs by lawbreakers.

The industrial production of acetone is mainly based on the cumene method, the acetone synthesized by the method often contains a small amount of constant phenol, and although the constant phenol in the acetone is easy to remove, the content of the constant phenol is difficult to detect by a simple method. Firstly, acetone is volatile, and measurement accuracy is low, secondly, it is too extravagant to use too accurate instrument to detect the content of constant phenol in the acetone. Therefore, a simple and convenient detection device for the constant phenol in the acetone is found, and the detection device is used for detecting the phenol content in the produced acetone.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a detection device for detecting constant phenol in acetone has utilized sodium hydroxide not to react with acetone, but builds the device with this principle of the constant phenol reaction in the acetone to solve the problem mentioned in the above-mentioned background. The utility model realizes the semi-automation of the titration operation, the monitoring of the titration speed and the titration amount, the accurate operation and the small error by using the combination of the third motor, the liquid level regulating valve, the infrared light sensor, the second motor, the titration speed regulating valve and the controller; the buffer part of the sample to be tested can be utilized to prevent the sample to be tested from being placed back into the titration bottle when the titration is excessive, such as one or more drops, so that unnecessary labor waste is reduced; crushed ice or ice water is used for reducing the ambient temperature around the acetone, the volatility of the acetone is reduced, and the error is reduced.

The purpose of the utility model can be realized by the following technical scheme:

a detection device for detecting constant phenol in acetone comprises an iron stand, a titration bottle and a dropper;

a refrigerating box is arranged on a base platform of the iron stand, a titration bottle is arranged in the refrigerating box, a stirring rod is arranged at the bottom of the titration bottle, and the stirring rod is connected with a rotating shaft of a first motor; the novel iron stand is characterized in that a dropper is fixed on a vertical rod of the iron stand through two iron clamps, the dropper is communicated with a first water pipe, a liquid level adjusting valve and a second water pipe through a three-way pipe respectively, the liquid level adjusting valve is connected with a third motor through an electric wire, the first water pipe is sequentially connected with a first switch, a first water pump and a first container, the second water pipe is sequentially connected with a second switch, a second water pump and a second container, an infrared light sensor is fixed on the vertical rod of the iron stand through a base, the infrared light sensor is wrapped on the outer wall of the dropper, the infrared light sensor is connected with a controller through an electric wire, a dripping speed adjusting valve is arranged at the lower end of the dropper, and the dripping speed adjusting valve is connected with the second motor.

Further, the color of the refrigerating box is gray brown.

Furthermore, the front surface of the refrigerating box is provided with a window, so that the color change of the titration reaction can be observed conveniently.

Further, the iron clamp and the vertical rod of the iron frame are fixed through welding.

Furthermore, the base is a sheet iron sheet with a round hole, and the round hole is adapted to the diameter of the vertical rod of the iron frame.

Further, the base is respectively fixed with the vertical rod of the iron frame and the infrared light sensor through welding.

Further, the second motor and the third motor are respectively connected with the controller through electric wires.

Further, the infrared light sensor is OS 136A-1.

Further, the controller is a PLC controller, preferably S I EMENSPLCS 7-200.

Furthermore, the first container is two containers which are sleeved with each other, acetone with constant phenol content is cached in the built-in container, and crushed ice or ice water is placed in the external container.

The utility model has the advantages that:

the utility model discloses in utilized sodium hydroxide not react with acetone, but carried out the device design with this principle of the constant phenol reaction in the acetone, formed a detection device who is arranged in detecting acetone constant phenol. The utility model realizes the semi-automation of titration speed titration quantity and titration operation by utilizing the combination of the third motor, the liquid level regulating valve, the infrared light sensor, the second motor, the titration speed regulating valve and the controller, and has more accuracy and smaller error compared with the manual operation; the buffer part of the sample to be tested is utilized, so that the sample to be tested can be placed back into the titration bottle when the titration is excessive, such as one drop or a plurality of drops, and unnecessary labor waste is reduced; crushed ice or ice water is used for reducing the ambient temperature around the acetone, the volatility of the acetone is reduced, and the error is reduced. Just the utility model discloses the device equipment is simple, easy installation, easy operation.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic diagram of a side view of the dropper of the present invention;

fig. 3 is a schematic structural diagram of the base of the present invention.

In the figure: 1. an iron frame; 2. a titration bottle; 21. a stirring rod; 22. a first motor; 23. a refrigerated container; 24. a window; 3. a first container; 31. a first water pipe; 32. a first water pump; 33. a first switch; 4. a second container; 41. a second water pipe; 42. a second water pump; 43. a second switch; 5. a dropper; 51. an infrared light sensor; 52. an iron clamp; 53. a drop rate regulating valve; 54. a liquid level regulating valve; 55. a controller; 56. a base; 561. a circular hole; 57. a second motor; 58. a third motor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

A detection device for detecting constant phenol in acetone is shown in figures 1-3 and comprises an iron frame 1, a titration bottle 2 and a dropper 5;

a refrigerating box 23 is arranged on the base platform of the iron stand 1, a titration flask 2 is arranged in the refrigerating box 23, a stirring rod 21 is arranged at the bottom of the titration flask 2, and the stirring rod 21 is connected with a rotating shaft of a first motor 22; a dropper 5 is fixed on a vertical rod of the iron stand 1 through two iron clamps 52, the dropper 5 is connected with a first water pipe 31, a liquid level regulating valve 54 and a second water pipe 41 through a three-way pipe fitting, the liquid level regulating valve 54 is connected with a third motor 58, a first switch 33, a first water pump 32 and a first container 3 are sequentially connected on the first water pipe 31, a second switch 43, a second water pump 42 and a second container 4 are sequentially connected on the second water pipe 41, an infrared light sensor 51 is fixed on the vertical rod of the iron stand 1 through a base 56, the base 56 is a sheet iron sheet with a round hole 561, the round hole 561 is adapted to a vertical diameter rod of the iron stand 1, the infrared light sensor 51 is wrapped on the outer wall of the dropper 5, the infrared light sensor 51 is connected with a controller 55 through a lead, a drop speed regulating valve 53 is arranged at the lower end of the dropper 5, the dripping speed regulating valve 53 is connected with a second motor 57, and the second motor 57 and a third motor 58 are respectively connected with a controller 55 through leads; the color of the refrigerating box 23 is gray brown, and the front surface of the refrigerating box 23 is provided with a window 24, so that the color change of the titration reaction can be observed conveniently; the first container 3 is composed of two sets of containers, the built-in container is used for storing acetone containing constant phenol, and the external container is used for storing crushed ice or ice water; the iron clamp 52 is fixed with a vertical rod of the iron stand 1 through welding, the base 56 is fixed with the vertical rod of the iron stand 1 and the infrared light sensor 51 through welding, the infrared light sensor 51 is OS136A-1, and the controller 55 is S I EMENSPLCS 7-200.

The working process and principle are as follows:

preparing: when detecting constant phenol in acetone, preparing a sample to be tested (acetone containing constant phenol), a titration solution (sodium hydroxide solution) and a methyl orange reagent, firstly caching a small part of the sample to be tested, filling most of the rest sample to be tested and the methyl orange reagent into a titration bottle 2, meanwhile, putting crushed ice or ice water into a refrigerating box 23, putting the sample to be tested in the caching part into a first container 3, putting the crushed ice or ice water into an external container, and putting the sodium hydroxide solution into a second container 4.

Titration measurement: the second switch 43 and the second water pump 42 are turned on for a while, and when the sodium hydroxide solution reaches 2/3 of the dropping pipe 5, the second switch 43 and the second water pump 42 are turned off, the first motor 22 is turned on, and the dropping speed adjusting valve 53 is turned on to perform the titration. The principle of fast first and slow second is followed in the titration process until the color of the solution in the titration flask 2 changes.

In the device of the present invention, the liquid level regulating valve 54 can be used for regulating the height of the water surface to control the water drop speed, and the third motor 58 can be used for controlling the liquid level regulating valve 54; the infrared light sensor 51 can sensitively detect the change of the flow rate of the water drops; the second motor 57 may control the dropping speed adjusting valve 53; the third motor 58, the infrared light sensor 51 and the second motor 57 are all connected to the controller 55, so that the controller 55 can receive the flow of the water drops measured by the infrared light sensor 51, and can also adjust the dropping speed of the water drops through the liquid level adjusting valve 54 and the dropping speed adjusting valve 53, thereby controlling the flow rate and the flow rate of the whole titration reaction. The buffer part of the tested sample can prevent the tested sample from being placed back into the titration bottle when the titration is excessive, such as one or more drops, and unnecessary labor waste is reduced.

The utility model discloses in utilized sodium hydroxide not react with acetone, but this principle of reacting with the constant phenol in the acetone has carried out the titration outfit design and has reached and detect out the constant phenol in the acetone. The utility model discloses in still utilized trash ice or frozen water to reduce the ambient temperature around the acetone, reduced the volatility of acetone, reduced the error.

The foregoing is merely exemplary and illustrative of the structure of the invention, and various modifications, additions and substitutions as described in the detailed description may be made by those skilled in the art without departing from the structure or exceeding the scope of the invention as defined in the claims.

Claims

1. A detection device for detecting constant phenol in acetone is characterized by comprising an iron stand (1), a titration bottle (2) and a dropper (5);

a refrigerating box (23) is arranged on a base platform of the iron frame (1), a titration flask (2) is arranged in the refrigerating box (23), a stirring rod (21) is arranged at the bottom of the titration flask (2), and the stirring rod (21) is connected with a rotating shaft of a first motor (22); the improved iron stand is characterized in that a dropper (5) is fixed on a vertical rod of the iron stand (1) through two iron clamps (52), the upper portion of the dropper (5) is connected with a first water pipe (31), a liquid level regulating valve (54) and a second water pipe (41) through a three-way pipe respectively, the liquid level regulating valve (54) is connected with a third motor (58), the first water pipe (31) is sequentially connected with a first switch (33), a first water pump (32) and a first container (3), the second water pipe (41) is sequentially connected with a second switch (43), a second water pump (42) and a second container (4), a drop speed regulating valve (53) is arranged at the lower end of the dropper (5), and the drop speed regulating valve (53) is connected with the second motor (57).

2. The detection device for detecting the constant quantity of phenol in acetone according to claim 1, wherein the iron clamp (52) is fixed with a vertical rod of the iron frame (1) through welding.

3. The device as claimed in claim 1, wherein the front face of the refrigerator (23) is provided with a window (24).

4. The device for detecting the constant amount of phenol in acetone according to claim 1, wherein the first container (3) is two nested vessels.