Novel recoverable oxygen-enriched air separation equipment
By introducing a contact balance detector and a vacuum pump system into the air separation equipment, automatic recovery of oxygen-enriched gas was achieved, solving the problem of oxygen-enriched emissions in existing technologies, improving nitrogen purity and equipment utilization, and reducing environmental risks.
Patent Information
- Application Number
- CN202422797111.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2024-02-28
- Filing Date
- 2024-11-18
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-11-18
AI Technical Summary
In existing technologies, the oxygen separated by the adsorption tower cannot be automatically recovered after being enriched during the separation process, resulting in oxygen-enriched emissions, which increases the oxygen content and the risk of environmental pollution, and cannot improve the purity of nitrogen.
A novel recyclable oxygen-enriched air separation device was designed, which uses a contact balance detector and a vacuum pump system to automatically detect the oxygen concentration and start the vacuum pump for recovery. The oxygen is then stored in a storage tank through a recovery pipeline, achieving active recovery of oxygen and energy saving and emission reduction.
It achieves automatic recovery of oxygen enrichment, reduces energy waste, avoids the risk of excessive oxygen emissions, improves the raw material utilization rate of air separation equipment, reduces the risk of poisoning, and improves nitrogen purity.
Smart Images
Figure CN223716762U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to air separation equipment technical field, concretely is a novel recyclable oxygen -enriched air separation equipment. BACKGROUND
[0002] In modern nitrogen preparation process, mainly adopt the way of adsorption tower to air adsorption separation, adsorb other components in air, so as to obtain different purity nitrogen, however, in the separation process, the oxygen separated by adsorption tower is enriched in the separation process, if directly discharged to workshop environment, not only harm the health of workers, also increase the influence to the surrounding environment, therefore, the present stage handles the oxygen enrichment of adsorption separation nitrogen mainly adopts the way of one-way valve and storage tank cooperation to carry out oxygen enrichment collection, however, it cannot realize automatic oxygen recovery separation, and easily increase the oxygen content in the preparation of nitrogen, in view of this, in-depth research is conducted for the above problems, and the case is generated. CONTENT OF THE UTILITY MODEL
[0003] In view of the deficiencies of the prior art, the utility model provides a novel recyclable oxygen -enriched air separation equipment, which solves the problems of the prior art.
[0004] To achieve the above purpose, the utility model realizes the following technical scheme: a novel recyclable oxygen -enriched air separation equipment, a pair of adsorption towers, a pair of adsorption towers is connected through the inlet pipe, a pair of adsorption towers is connected with the discharge pipe, the inlet pipe is connected with the inlet air compression pipe between the inlet pipe, the discharge pipe is connected with the nitrogen outlet on the discharge pipe, a pair of adsorption towers is connected with the oxygen -enriched discharge pipe between the adsorption tower;
[0005] The oxygen -enriched discharge pipe is connected with the recovery pipeline, the end of the recovery pipeline is connected with the oxygen -enriched storage tank, the recovery pipeline is provided with a vacuum pump, one side of the vacuum pump is located on the recovery pipeline and is provided with a tee joint, the tee joint is connected with a contact point balance detector;
[0006] The contact point balance detector includes a detection tube, the detection tube is connected on the tee joint, the detection tube is provided with a pressure control valve, the end of the detection tube is connected with a detection sleeve, the end of the detection sleeve is provided with a plugging seat, the plugging seat is threadedly connected with an adjusting screw rod, the end of the adjusting screw rod is movably connected with a contact plate, a pair of contact points are arranged on the contact plate.
[0007] The detection sleeve is assembled with a sliding piston, the sliding piston is provided with a connecting gasket.
[0008] Preferably, the end of the detection tube and the tee joint are connected by flange.
[0009] Preferably, the end of the plugging seat and the detection sleeve are connected by screw structure.
[0010] Preferably, the contact plate is movably connected with the end of the adjusting screw rod, a limiting slide plate is arranged in one side of the detection sleeve, and a limiting groove matched with the limiting slide plate is formed in the contact plate.
[0011] Preferably, an electric control valve is arranged on one side of the three-way joint on the recovery pipeline.
[0012] Beneficial effects
[0013] The novel recyclable oxygen-enriched air separation equipment has the beneficial effects that: the novel recyclable oxygen-enriched air separation equipment is provided with a recovery pipeline with a detection function arranged on an oxygen-enriched discharge port of an air separation equipment, and a vacuum pump working automatically is arranged on the recovery pipeline; when the oxygen-enriched concentration detected by the contact balance detector reaches a standard, the vacuum pump is automatically started to recycle oxygen-enriched air, thereby reducing the waste of oxygen-enriched energy, avoiding long-term oxygen-enriched discharge of a running workshop, and reducing the risk of oxygen concentration exceeding a standard and poisoning hidden dangers, improving the utilization rate of compressed air of a raw material of the air separation equipment, and achieving energy saving and emission reduction. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 FIG. 1 is a system frame schematic view of the novel recyclable oxygen-enriched air separation equipment.
[0015] Figure 2 FIG. 2 is a front view structural schematic view of the adsorption tower of the novel recyclable oxygen-enriched air separation equipment.
[0016] Figure 3 FIG. 3 is a rear view structural schematic view of the adsorption tower of the novel recyclable oxygen-enriched air separation equipment.
[0017] Figure 4 FIG. 4 is a contact balance detector structural schematic view of the novel recyclable oxygen-enriched air separation equipment.
[0018] In the figure: 1, recovery pipeline; 2, vacuum pump; 3, oxygen-enriched storage tank; 4, control system; 5, adsorption tower; 51, discharge pipe; 52, air inlet air compression pipe; 53, nitrogen outlet; 54, oxygen-enriched discharge pipe; 55, air inlet pipe; 11, three-way joint; 12, contact balance detector; 13, electric control valve; 121, detection pipe; 122, pressure control valve; 123, detection sleeve; 124, plugging seat; 125, adjusting screw rod; 126, contact plate; 127, sliding piston; 128, connecting gasket; 129, flange. DETAILED DESCRIPTION
[0019] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.
[0020] Please refer to Figures 1-4 The present application provides an implementation scheme: in the process of preparing nitrogen by modern pressure swing adsorption, oxygen enrichment occurs in the process of separating other gases, and passive oxygen discharge equipment is mainly used at present to recover the oxygen enriched by nitrogen separation. This way has no active power on one hand, and the discharge is not complete, which can easily lead to insufficient nitrogen purity. On the other hand, it is easy to cause oxygen leakage and cause poisoning of workshop workers. Therefore, the present application discloses a novel recoverable oxygen-enriched air separation equipment, which comprises an oxygen-enriched storage tank 3, a vacuum pump 2, a recovery pipeline 1, an adsorption tower 5 and a control system 4. The oxygen-enriched storage tank 3 is connected to one end of the recovery pipeline 1, the other end of the recovery pipeline 1 is in communication with an oxygen-enriched separation zone between a pair of adsorption towers 5, the vacuum pump 2 is connected to the recovery pipeline 1 and close to the oxygen-enriched storage tank 3, and the pair of adsorption towers 5 are connected by an air inlet pipe 55. An air inlet air compression pipe 52 is connected between the air inlet pipes 55. The external air pump compresses air from the air inlet air compression pipe 52 into the pair of adsorption towers 5. The pair of adsorption towers 5 perform pressure swing adsorption under the action of pressure, and separate oxygen and nitrogen by using molecular sieve. A discharge pipe 51 is connected between the pair of adsorption towers 5, and a nitrogen outlet 53 is connected to the discharge pipe 51 for discharging nitrogen. At this time, oxygen is enriched in the adsorption tower 5, and when the oxygen concentration is high, it enters the recovery pipeline 1. A three-way joint 11 is arranged on the side of the vacuum pump 2 in the recovery pipeline 1. A contact balance detector 12 on the three-way joint 11 detects the pressure of the oxygen-enriched air. When the oxygen-enriched air reaches a certain degree, the contact balance detector 12 controls the circuit joint of the control system 4. An oxygen-enriched discharge pipe 54 is connected between the pair of adsorption towers 5, and the oxygen-enriched discharge pipe 54 is connected to the recovery pipeline 1. The oxygen-enriched air is drawn into the oxygen-enriched storage tank 3 from the oxygen-enriched discharge pipe 54 by the vacuum pump 2 on the recovery pipeline 1, and is recovered and utilized.
[0021] According to the description Figure 4It can be known that the contact balance detector 12 comprises a detection pipe 121 connected to the three-way joint 11, a pressure control valve 122 arranged on the detection pipe 121, a detection sleeve 123 connected to an end of the detection pipe 121, a sealing seat 124 arranged on an end of the detection sleeve 123, an adjusting screw rod 125 threadedly connected to the sealing seat 124, a contact plate 126 movably connected to an end of the adjusting screw rod 125, a pair of contact contacts arranged on the contact plate 126, and a sliding piston 127 assembled in the detection sleeve 123, wherein a connecting gasket 128 is arranged on the sliding piston 127;
[0022] In the specific implementation process, the detection pipe 121 is connected to the three-way joint 11, when the oxygen is enriched, the pressure of the detection pipe 121 is increased due to the channeling effect of the recovery pipeline 1, the sliding piston 127 is driven to move, the connecting gasket 128 on the sliding piston 127 contacts a pair of contact contacts, and the pair of contact contacts are connected to the sensing switch circuit of the control system 4. When the connecting gasket contacts the contact contacts, the sensing switch is opened, the vacuum pump 2 is started to work, the vacuum pump 2 extracts the enriched oxygen and resets the sliding piston 127 in the detection pipe 121, the sealing seat 124 is used to install the adjusting screw rod 125 on the detection sleeve 123, and is also threadedly engaged with the adjusting screw rod 125. By threadedly engaging the adjusting screw rod 125 with the sealing seat 124, the initial position of the contact plate 126 in the detection sleeve 123 is adjusted, and the vacuum pump 2 starts to work at different oxygen enrichment concentrations.
[0023] As a preferred solution, further, the end of the detection pipe 121 is connected to the three-way joint 11 by a flange 129, which is convenient for disassembly, maintenance and repair.
[0024] As a preferred solution, further, the end of the detection pipe 121 is connected to the three-way joint 11 by a flange 129, which is convenient for disassembly, maintenance and repair.
[0025] As a preferred solution, further, the end of the detection pipe 121 is connected to the three-way joint 11 by a flange 129, which is convenient for disassembly, maintenance and repair.
[0026] As a preferred solution, further, the end of the detection pipe 121 is connected to the three-way joint 11 by a flange 129, which is convenient for disassembly, maintenance and repair.
[0027] In summary, the new recyclable oxygen-enriched air separation device, which is provided with the recycling pipeline 1 with detection function on the oxygen-enriched discharge port of the air separation device, is equipped with the automatically working vacuum pump 2 on the recycling pipeline 1, and the vacuum pump 2 is automatically started to recycle the oxygen-enriched air when the touch point balance detector 12 detects that the oxygen-enriched concentration reaches the standard, thereby reducing the waste of oxygen-enriched energy, avoiding the long-term oxygen-enriched discharge of the running workshop, the risk of poisoning hidden danger caused by the over-standard oxygen concentration, improving the utilization rate of the raw material compressed air of the air separation device, and achieving energy saving and emission reduction.
[0028] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.
Claims
1. A novel recyclable oxygen-enriched air separation plant comprising a pair of adsorption towers (5), a pair of said adsorption towers (5) being connected by means of an intake pipe (55), a pair of said adsorption towers (5) being connected by means of a discharge pipe (51), characterized in that, The air inlet pipe (55) is connected with an air inlet air pressure pipe (52), the discharge pipe (51) is connected with a nitrogen outlet (53), and a pair of the adsorption towers (5) are connected with an oxygen-rich discharge pipe (54); The oxygen-rich discharge pipe (54) is connected with a recovery pipeline (1), the end of the recovery pipeline (1) is connected with an oxygen-rich storage tank (3), a vacuum pump (2) is arranged on the recovery pipeline (1), a three-way joint (11) is arranged on one side of the vacuum pump (2) on the recovery pipeline (1), and a contact balance detector (12) is connected on the three-way joint (11); The contact balance detector (12) comprises a detection pipe (121), the detection pipe (121) is connected on the three-way joint (11), a pressure control valve (122) is arranged on the detection pipe (121), an end of the detection pipe (121) is connected with a detection sleeve (123), an end of the detection sleeve (123) is provided with a plugging seat (124), the plugging seat (124) is threadedly connected with an adjusting lead screw (125), an end of the adjusting lead screw (125) is movably connected with a contact plate (126), a pair of contact contacts are arranged on the contact plate (126), a sliding piston (127) is assembled in the detection sleeve (123), and a connecting gasket (128) is arranged on the sliding piston (127).
2. A novel recoverable oxygen enriched air separation plant as claimed in claim 1 wherein, The end of the detection pipe (121) is connected with the three-way joint (11) through a flange (129).
3. A novel recoverable oxygen enriched air separation plant as claimed in claim 2, wherein, The end of the detection sleeve (123) is connected with the plugging seat (124) in a threaded structure.
4. A novel recoverable oxygen enriched air separation plant as claimed in claim 3 wherein, The contact plate (126) is movably connected with the end of the adjusting lead screw (125), a limiting slide plate is arranged in one side of the detection sleeve (123), and a limiting groove matched with the limiting slide plate is formed in the contact plate (126).
5. A novel recoverable oxygen enriched air separation plant as claimed in claim 4 wherein, An electric control valve (13) is arranged on one side of the three-way joint (11) on the recovery pipeline (1).