Experimental device for temperature swing adsorption

Abstract

The invention relates to the technical field of chemical engineering experiment teaching devices, in particular to a temperature swing adsorption experiment device. The temperature swing adsorption experimental device is simple in structure, has adsorption and temperature swing adsorption tower regeneration functions, and greatly facilitates students to learn the basic temperature swing adsorption principle; a real temperature swing adsorption device is complex and dangerous in field conditions, such as weight, dangerous raw materials, complex environment, water and electricity, and has high requirements on the qualification of tools and operators; when the temperature swing adsorption device is used for learning the temperature swing adsorption chemical unit, the operation is simple and is only carried out indoors, the weight is light, low voltage and weak current are realized, the requirement on personnel is low, and great convenience is brought to teaching; experimental raw materials are clean and safe materials and are free of danger; the technological process is designed, continuous production can be achieved, and the adsorption tower 1 and the adsorption tower 2 can conduct adsorption and temperature swing desorption processes at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of chemical engineering experimental teaching devices, and in particular to a temperature-swing adsorption experimental device. Background Art

[0002] Temperature swing adsorption utilizes the property that the equilibrium adsorption amount of the adsorbent decreases as the temperature increases, and adopts the operation method of normal temperature adsorption and temperature rise desorption. In addition to adsorption and desorption, the entire temperature swing adsorption operation also includes auxiliary links such as drying and cooling the adsorbent after desorption. Temperature swing adsorption is used for dehumidification of atmospheric pressure gas and air, recovery of solvent vapor in the air, etc. If the adsorbate is water, the adsorbent can be heated by hot gas for desorption; if the adsorbate is an organic solvent, it can be heated by water vapor for desorption and then condensed for recovery when the adsorption amount is high; when the adsorption amount is low, it can be desorbed by hot air and then burned, or recovered after secondary adsorption.

[0003] The various types of temperature swing adsorption experimental devices currently available use relatively dangerous raw materials such as coalbed methane and methane. The experiments are highly dangerous and the experimental results are poor, which greatly reduces the teaching effect. They have little guiding significance for students to learn the operation process of temperature swing adsorption chemical units, and cannot effectively improve school students' intuitive understanding of temperature swing adsorption devices. Summary of the invention

[0004] The purpose of the present invention is to solve the deficiencies of the prior art and provide a miniaturized and experimental temperature swing adsorption device, while using safe materials as raw materials, so that students can understand and learn the basic principles of temperature swing adsorption (TSA) and perform practical operations in the laboratory.

[0005] To achieve the above object, the present invention provides a temperature swing adsorption experimental device, comprising

[0006] A reaction module, wherein the reaction module comprises at least two adsorption towers, the adsorption towers are connected by pipelines to form a loop, and the reaction module is used to simultaneously perform an adsorption process and an adsorption tower regeneration process;

[0007] A temperature control module, the temperature control module includes a heating unit and a cooling unit, the heating unit is arranged on one side of the reaction module, and the heating unit is connected to the reaction module through a pipeline, the cooling unit is arranged on a side of the reaction module away from the heating module, and the cooling unit is connected to the reaction module through a pipeline, and the temperature control module is used to provide necessary reaction conditions for the reaction module.

[0008] Preferably, a buffer module is further included, the buffer module includes a buffer tank, the buffer tank is connected to the heating module through a pipeline, and the buffer module is used to discharge the reaction gas.

[0009] Preferably, the heating unit comprises a heater, the heater is bidirectionally connected to the reaction module via a pipeline, the heater is unidirectionally connected to the buffer module via a pipeline, and the reaction gas can only flow into the buffer module after being discharged from the heater.

[0010] Preferably, the heating unit further comprises a gas analyzer, a flow meter and a thermometer, and the gas analyzer, the flow meter and the thermometer are all arranged in the middle of the pipeline of the heating unit.

[0011] Preferably, the cooling unit comprises a cooler, and the cooler is provided with three branches: cooling return water, atmospheric venting and cooling water inlet. The thermometer and the gas analyzer are also provided on the atmospheric venting branch.

[0012] Preferably, the buffer module is provided with a gas extraction pipe, the gas analyzer and the flow meter are provided in the middle of the gas extraction pipe, and a pressure gauge is also connected to one side of the buffer tank.

[0013] Preferably, it also includes an air intake module, which is connected to the reaction module through a pipeline, and the air intake module includes an air pump.

[0014] Preferably: it is characterized in that the reaction module includes adsorption tower one and adsorption tower two.

[0015] Compared with the prior art, the technical solution proposed in this application has the following beneficial effects: the real temperature swing adsorption experimental device and its supporting accessories have complex structures and large devices, which are not convenient for school teaching; while the present temperature swing adsorption experimental device has a simple structure and covers the adsorption and temperature swing adsorption tower regeneration functions, which greatly facilitates students to learn the basic principles of temperature swing adsorption; the real temperature swing adsorption device has complex and dangerous on-site conditions (such as weight, dangerous raw materials, complex environment, water, electricity, etc.), and has high requirements on the tools and qualifications of operators; while learning the temperature swing adsorption chemical unit through the present temperature swing adsorption device is simple to operate, is only carried out indoors, and has a small weight, low voltage, and weak electricity, and has low requirements on personnel, which greatly facilitates teaching; the experimental raw materials are clean and safe materials, and are non-hazardous; the process flow design allows continuous production, and adsorption tower 1 and adsorption tower 2 can simultaneously carry out adsorption and temperature swing desorption processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0017] Figure 1 It is a structural diagram of the temperature swing adsorption experimental device of the present invention;

[0018] In the figure: 1. air pump; 2. adsorption tower 1; 3. adsorption tower 2; 4. cooler; 5. heater; 6. buffer tank; T-thermometer; P-pressure gauge; F-flow meter; A-gas analyzer. DETAILED DESCRIPTION

[0019] The following will clearly and completely describe and discuss the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, what is described here is only a part of the examples of the present invention, not all the examples. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0020] It should be noted that when a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a component centered. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may also be a component centered. When a component is considered to be "set on" another component, it may be directly set on the other component or there may also be a component centered. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0022] Example 1

[0023] A temperature swing adsorption experimental device, comprising

[0024] A reaction module, wherein the reaction module comprises two adsorption towers, an adsorption tower 1 and an adsorption tower 2, the adsorption towers are connected by pipelines to form a loop, and the reaction module is used to simultaneously perform an adsorption process and an adsorption tower regeneration process;

[0025] Temperature control module, the temperature control module includes a heating unit and a cooling unit, the heating unit is arranged on one side of the reaction module, and the heating unit is connected to the reaction module through a pipeline, the cooling unit is arranged on the side of the reaction module away from the heating module, and the cooling unit is connected to the reaction module through a pipeline, and the temperature control module is used to provide the necessary reaction conditions for the reaction module. The heating unit includes a heater, the heater and the reaction module are bidirectionally connected through a pipeline, the heater and the buffer module are unidirectionally connected through a pipeline, and the reaction gas can only flow into the buffer module after being discharged from the heater. The heating unit also includes a gas analyzer, a flow meter and a thermometer, and the gas analyzer, the flow meter and the thermometer are all arranged in the middle of the pipeline of the heating unit. The cooling unit includes a cooler, and the cooler is provided with three branches: cooling return water, atmospheric venting and cooling water inlet. The atmospheric venting branch is also provided with a thermometer and a gas analyzer.

[0026] The buffer module also includes a buffer tank, which is connected to the heating module through a pipeline, and is used to discharge the reaction gas. The buffer module is provided with a gas extraction pipe, a gas analyzer and a flow meter are provided in the middle of the gas extraction pipe, and a pressure gauge is also connected to one side of the buffer tank.

[0027] It also includes an air intake module, which is connected to the reaction module through a pipeline, and the air intake module includes an air pump.

[0028] Example 2

[0029] The use process of the above device is as follows:

[0030] Experimental process of temperature swing adsorption experimental device:

[0031] Adsorption and temperature swing adsorption tower regeneration can be carried out simultaneously for continuous production. When adsorption tower 1 is carrying out the adsorption process, adsorption tower 2 is carrying out the adsorption tower regeneration process, and vice versa.

[0032] Adsorption process

[0033] 1) Fresh and safe materials are transported to the adsorption tower 1 through pipelines via an air compressor for nitrogen adsorption;

[0034] 2) The adsorbed gas flows into the buffer tank from the top of adsorption tower 1;

[0035] 3) The gas in the buffer tank is extracted through the flow meter by adjusting the opening of the outlet needle valve;

[0036] 4) After adsorption, a sampling port is provided on the gas extraction tube to sample and analyze the gas content.

[0037] Adsorption tower regeneration process

[0038] 1) After the adsorption process has been carried out, the molecular sieve in the adsorption tower 1 is saturated with adsorption, and the safe material after being output from the air compressor and flowing through the pressure reducing valve and the filter enters the heater from the branch line for heating;

[0039] 2) The safe material heated by the heater enters the adsorption tower 1 from the top of the adsorption tower to desorb the saturated molecular sieve in the adsorption tower 1;

[0040] 3) The desorbed gas flows out from the bottom of adsorption tower 1, enters the cooler for cooling and then is discharged.

[0041] Compared with the prior art, the temperature swing adsorption experimental device of the present invention provides a new temperature swing adsorption experimental device, which is safer and more controllable than the temperature swing adsorption devices currently on the market that use hazardous raw materials, and can achieve better teaching functions for adsorption and temperature swing desorption chemical unit operations.

[0042] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and one or more of the above embodiments are combined into one embodiment. Those skilled in the art can make various changes or modifications or combinations within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other at will.

Claims

1. A temperature swing adsorption experimental device, characterized in that: include A reaction module, wherein the reaction module comprises at least two adsorption towers, the adsorption towers are connected by pipelines to form a loop, and the reaction module is used to simultaneously perform an adsorption process and an adsorption tower regeneration process; A temperature control module, the temperature control module includes a heating unit and a cooling unit, the heating unit is arranged on one side of the reaction module, and the heating unit is connected to the reaction module through a pipeline, the cooling unit is arranged on a side of the reaction module away from the heating module, and the cooling unit is connected to the reaction module through a pipeline, and the temperature control module is used to provide necessary reaction conditions for the reaction module.

2. The temperature swing adsorption experimental device according to claim 1, characterized in that: It also includes a buffer module, which includes a buffer tank. The buffer tank is connected to the heating module through a pipeline, and the buffer module is used to discharge the reaction gas.

3. The temperature swing adsorption experimental device according to claim 2, characterized in that: The heating unit comprises a heater, the heater is bidirectionally connected to the reaction module through a pipeline, the heater is unidirectionally connected to the buffer module through a pipeline, and the reaction gas can only flow into the buffer module after being discharged from the heater.

4. The temperature swing adsorption experimental device according to claim 3, characterized in that: The heating unit further comprises a gas analyzer, a flow meter and a thermometer, and the gas analyzer, the flow meter and the thermometer are all arranged in the middle of the pipeline of the heating unit.

5. The temperature swing adsorption experimental device according to claim 2, characterized in that: The cooling unit comprises a cooler, and the cooler is provided with three branches: cooling water return, atmospheric discharge and cooling water inlet. The atmospheric discharge branch is also provided with the thermometer and the gas analyzer.

6. The temperature swing adsorption experimental device according to claim 2, characterized in that: The buffer module is provided with a gas extraction pipe, the gas analyzer and the flow meter are provided in the middle of the gas extraction pipe, and a pressure gauge is also connected to one side of the buffer tank.

7. The temperature swing adsorption experimental device according to claim 2, characterized in that: It also includes an air intake module, which is connected to the reaction module through a pipeline, and the air intake module includes an air pump.

8. A temperature swing adsorption experimental device according to any one of claims 3 to 7, characterized in that: The reaction module includes an adsorption tower 1 and an adsorption tower 2.

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