Energy-saving chemical rectification equipment

Abstract

The utility model discloses energy-saving chemical rectification equipment which comprises a distillation tower, a condenser is arranged at the upper end of the distillation tower, and a distillation kettle is arranged at the lower end of the distillation tower; the distillation still is communicated with a raw material tank, the raw material tank is communicated with a first feeding pump, the discharging end of the first feeding pump is communicated with a raw material head tank, and a first conveying pipe is arranged between the raw material head tank and the distillation tower; a second conveying pipe is arranged on the distillation tower, the height of the second conveying pipe is larger than that of the first conveying pipe, and stainless steel pipelines are adopted as the first conveying pipe, the second conveying pipe, the communicating pipe and the third conveying pipe, so that leakage caused by little corrosion of the pipelines is avoided, and safety and reliability of experimental equipment are guaranteed; as the raw material head tank is adopted and the flow is adjusted through the valve, the feeding flow is very stable; besides, the loss of raw materials in the experiment process is reduced, the experiment risk is reduced, and more energy is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of distillation equipment, and specifically relates to energy-saving chemical distillation equipment. Background Art

[0002] In the relevant technology, distillation is a very important chemical unit operation, and the commonly used laboratory distillation equipment is designed according to a single distillation operation function, such as ordinary distillation apparatus, azeotropic distillation apparatus, extractive distillation apparatus, reactive distillation apparatus, which are divided into plate type and packing type according to the structure of the tower.

[0003] In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art:

[0004] If all types of distillation equipment are equipped, not only a large amount of funds and more experimental sites will be required, but a large amount of chemical raw materials will also be wasted during the experiment. Utility Model Content

[0005] The purpose of the utility model is to provide an energy-saving chemical distillation equipment to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an energy-saving chemical distillation equipment, comprising a distillation tower, a condenser is provided at the upper end of the distillation tower, and a distillation kettle is provided at the lower end of the distillation tower; the distillation kettle is connected to a raw material tank, the raw material tank is connected to a first feed pump, the discharge end of the first feed pump is connected to a raw material high-level tank, and a first transport pipe is provided between the raw material high-level tank and the distillation tower; a second transport pipe is provided on the distillation tower, the height of the second transport pipe is greater than the height of the first transport pipe, the second transport pipe is connected to an extractant high-level tank, the feed end of the extractant high-level tank is connected to a feed pump, and the feed end of the feed pump is connected to the extractant tank; a connecting pipe is provided between the first transport pipe and the second transport pipe, and a connecting valve is provided on the connecting pipe.

[0007] Preferably, a condenser is provided in the condenser, and the water inlet and outlet of the condenser are extended to the outside of the condenser and are respectively provided with a water inlet and a water outlet.

[0008] Preferably, the condenser is connected to a high-level tank, and a third transport pipe is provided between the high-level tank and the distillation tower.

[0009] Preferably, the third transport pipe is provided with a production outlet, and the third transport pipe is connected to the second transport pipe.

[0010] Preferably, an electric heating tube is provided in the distillation kettle.

[0011] Preferably, the connecting pipe and the connecting valve are provided between the raw material tank and the raw material high-level tank; and the connecting pipe and the connecting valve are also provided between the extractant high-level tank and the extractant tank.

[0012] Preferably, the first transport pipe, the second transport pipe, the connecting pipe and the third transport pipe are all made of stainless steel pipes.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the first transport pipe, the second transport pipe, the connecting pipe and the third transport pipe arranged in the utility model are all made of stainless steel pipes, thus avoiding leakage caused by a small amount of corrosion in the pipes and ensuring the safety and reliability of the experimental equipment; since a high-level raw material tank is used and the flow is adjusted by a valve, the feed flow is very stable; the pump has a short operating time and consumes less electricity, and in addition, the loss of raw materials during the experiment is reduced, the risk of the experiment is reduced, and it is more energy-efficient; the utility model has the functions of continuous ordinary distillation, extraction distillation and reaction distillation, achieving three uses in one machine; and reducing equipment funds and site occupation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structural installation of the utility model.

[0015] In the figure: 1. distillation tower; 2. condenser; 3. distillation kettle; 4. raw material tank; 5. first feed pump; 6. raw material high-level tank; 7. first transport pipe; 8. second transport pipe; 9. extractant high-level tank; 10. feed pump; 11. extractant tank; 12. connecting pipe; 13. connecting valve; 14. condenser; 15. high-level tank; 16. third transport pipe; 17. production outlet; 18. electric heating tube. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1The utility model provides a technical solution: an energy-saving chemical distillation equipment, comprising a distillation tower 1, a condenser 2 is provided at the upper end of the distillation tower 1, and a distillation kettle 3 is provided at the lower end of the distillation tower 1; the distillation kettle 3 is connected with a raw material tank 4, the raw material tank 4 is connected with a first feed pump 5, the discharge end of the first feed pump 5 is connected with a raw material high-level tank 6, and a first transport pipe 7 is provided between the raw material high-level tank 6 and the distillation tower 1; a second transport pipe 8 is provided on the distillation tower 1, the height of the second transport pipe 8 is greater than the height of the first transport pipe 7, the second transport pipe 8 is connected with an extractant high-level tank 9, the feed end of the extractant high-level tank 9 is connected with a feed pump 10, and the feed end of the feed pump 10 is connected with an extractant tank 11; a connecting pipe 12 is provided between the first transport pipe 7 and the second transport pipe 8, and a connecting valve 13 is provided on the connecting pipe 12;

[0018] The experimental system was selected as an acetone-acetic acid-water solution, whose composition was 10wt% acetic acid, 80wt% acetone and 10wt% water. A saturated sodium hydroxide solution was used as a neutralizer to carry out a continuous reactive distillation experiment. First, about 3L of acetone-acetic acid-water mixture liquid was added to the lower raw material storage tank, and about 3L of saturated sodium hydroxide solution was added to the reactant storage tank, and then they were pumped into their respective high-level storage tanks. Add 1.5L of distilled water to the kettle, inject about 500ml of acetone-acetic acid-water solution and 200ml of saturated sodium hydroxide solution into the kettle, then heat the kettle, and turn on the power supply of the tower body. When the top of the tower begins to reflux, first perform full reflux operation. After one hour of full reflux, adjust the reflux ratio to 3, start collecting the top product, and start adding saturated sodium hydroxide solution, control its feeding rate to 10ml / min, and start feeding raw materials, control the feeding rate of raw materials to 30ml / min, and record the material taking time, check the balance of materials at any time, and adjust the feeding rate or evaporation amount. In addition, the discharge of the kettle liquid should be adjusted to roughly maintain the stability of the tower kettle liquid level. During the operation, the raw materials, the top and the bottom materials are analyzed by gas chromatograph, and the acetone content of the top distillate reaches 93-95%.

[0019] Specifically, a condenser tube 14 is provided in the condenser 2 , and the water inlet and outlet of the condenser tube 14 are extended to the outside of the condenser 2 and are respectively provided with a water inlet and a water outlet.

[0020] Specifically, the condenser 2 is connected to a high-level tank 15 , and a third transport pipe 16 is provided between the high-level tank 15 and the distillation tower 1 .

[0021] Specifically, the third transport pipe 16 is branched with a production outlet 17 , and the third transport pipe 16 is connected to the second transport pipe 8 .

[0022] Specifically, an electric heating pipe 18 is provided in the distillation kettle 3 .

[0023] Specifically, a connecting pipe 12 and a connecting valve 13 are provided between the raw material tank 4 and the raw material high-level tank 6 ; a connecting pipe 12 and a connecting valve 13 are also provided between the extractant high-level tank 9 and the extractant tank 11 .

[0024] Specifically, the first transport pipe 7, the second transport pipe 8, the connecting pipe 12 and the third transport pipe 16 are all made of stainless steel pipes.

[0025] Working principle: In the utility model, a mixture liquid can be added to the lower raw material storage tank, a reaction solution can be added to the reactant storage tank, and then a pump can be used to deliver the mixture into the corresponding raw material high-level tank and the extractant high-level tank, distilled water is added to the distillation kettle 3, and then the reaction solution is injected into the kettle, the electric heating tube 18 is started to heat the distillation kettle 3, and the preset tower body insulation power supply is turned on at the same time. When working, the first transport pipe 7, the second transport pipe 8, the connecting pipe 12 and the third transport pipe 16 are all made of stainless steel pipes, which avoids leakage caused by a small amount of corrosion in the pipes and ensures the safety and reliability of the experimental equipment; due to the use of the raw material high-level tank 6 and the flow rate is adjusted by the valve, the feed flow rate is very stable; the pump operation time is short and the power consumption is low.

[0026] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving chemical distillation equipment, characterized in that: It comprises a distillation tower (1), wherein a condenser (2) is provided at the upper end of the distillation tower (1), and a distillation kettle (3) is provided at the lower end of the distillation tower (1); The distillation kettle (3) is connected to a raw material tank (4), the raw material tank (4) is connected to a first feed pump (5), the discharge end of the first feed pump (5) is connected to a raw material high-level tank (6), and a first transport pipe (7) is provided between the raw material high-level tank (6) and the distillation tower (1); The distillation tower (1) is provided with a second transport pipe (8), the height of the second transport pipe (8) is greater than the height of the first transport pipe (7), the second transport pipe (8) is connected to an extractant high-level tank (9), the feed end of the extractant high-level tank (9) is connected to a feed pump (10), and the feed end of the feed pump (10) is connected to an extractant tank (11); A connecting pipe (12) is provided between the first transport pipe (7) and the second transport pipe (8), and a connecting valve (13) is provided on the connecting pipe (12); The condenser (2) is connected to a high-level tank (15), and a third transport pipe (16) is provided between the high-level tank (15) and the distillation tower (1).

2. An energy-saving chemical distillation equipment according to claim 1, characterized in that: A condenser (14) is provided in the condenser (2); the water inlet and outlet of the condenser (14) both extend to the outside of the condenser (2) and are respectively provided with a water inlet and a water outlet.

3. The energy-saving chemical distillation equipment according to claim 1, characterized in that: The third transport pipe (16) is branched with a collection outlet (17), and the third transport pipe (16) is connected to the second transport pipe (8).

4. The energy-saving chemical distillation equipment according to claim 1, characterized in that: An electric heating tube (18) is arranged inside the distillation kettle (3).

5. The energy-saving chemical distillation equipment according to claim 1, characterized in that: The connecting pipe (12) and the connecting valve (13) are provided between the raw material tank (4) and the raw material high-level tank (6); the connecting pipe (12) and the connecting valve (13) are also provided between the extractant high-level tank (9) and the extractant tank (11).

6. The energy-saving chemical distillation equipment according to claim 1, characterized in that: The first transport pipe (7), the second transport pipe (8), the connecting pipe (12) and the third transport pipe (16) are all made of stainless steel pipes.

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