Mechanical seal cooling water recovery system for waste gas treater of formaldehyde concentrator

Abstract

The utility model relates to the technical field of chemical production equipment, in particular to a mechanical seal cooling water recovery system for a waste gas treater of a formaldehyde concentrator, which comprises a mechanical seal water tank, a backflow pipeline is communicated with the mechanical seal water tank, a desalted water pipeline is communicated with the backflow pipeline, a centrifugal pump is arranged on the backflow pipeline, and the desalted water pipeline is communicated with the centrifugal pump. The mechanical seal water tank is used for collecting cooling water flowing out of a vacuum pump mechanical seal, the mechanical seal water tank is communicated with the centrifugal pump through a backflow pipeline to form a cooling water recycling loop, and the system forms a closed circulation cooling water recycling system through the mechanical seal water tank, the backflow pipeline and the centrifugal pump. Cooling water flowing out of the vacuum pump mechanical seal can be effectively collected and recycled through the backflow pipeline and the centrifugal pump, the stable cooling water amount is provided, waste water discharge is effectively reduced, meanwhile, energy consumption in the production process is reduced, economic benefits of enterprises are improved, sustainable development is achieved, and the green production concept is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of chemical production equipment, specifically relates to a formaldehyde concentrator waste gas treater machine seal cooling water recovery system. BACKGROUND

[0002] In the formaldehyde concentration process, the reduced pressure evaporation is the key link of formaldehyde concentration, and the vacuum pump is the key equipment for providing negative pressure operation, and the mechanical seal (mechanical seal) needs to continuously supply cooling water to prevent overheating damage. In the traditional production process, the mechanical seal water is often directly discharged into the sewage system after completing the cooling task, which not only causes waste of water resources, but also increases the wastewater treatment cost and energy consumption. Therefore, it is particularly important to develop a system that can effectively recover and recycle the mechanical seal cooling water. SUMMARY

[0003] The utility model discloses a formaldehyde concentrator waste gas treater machine seal cooling water recovery system to overcome the defects of prior art and solve the above problems.

[0004] The utility model discloses a formaldehyde concentrator waste gas treater machine seal cooling water recovery system, including the mechanical seal water tank, the mechanical seal water tank is connected with the return pipeline, the return pipeline is connected with the desalted water pipeline, the return pipeline is equipped with the centrifugal pump, the mechanical seal water tank is used to collect the cooling water of the mechanical seal of the vacuum pump, the mechanical seal water tank is communicated with the centrifugal pump through the return pipeline and is formed cooling water's recycling circuit.

[0005] Preferably, the return pipeline is sequentially provided with a heat exchanger, a filter and a water distributor from the centrifugal pump to the vacuum pump.

[0006] Preferably, the return pipeline is provided with a control system, and the control system is located between the water distributor and the vacuum pump.

[0007] Preferably, the mechanical seal water tank is provided with a filtering device, and the filtering device is communicated with the return pipeline.

[0008] Preferably, the bottom of the mechanical seal water tank is provided with a heater.

[0009] Preferably, a pressure relief pipeline is communicated between the return pipeline and the mechanical seal water tank, and a safety valve is arranged on the pressure relief pipeline.

[0010] The utility model has the advantages of the following beneficial effects:

[0011] 1. The formaldehyde concentrator exhaust gas processor machine seal cooling water recovery system, through the machine seal water tank, the backflow pipeline and the centrifugal pump, constitutes a closed circulating cooling water recovery system, can effectively collect the cooling water flowing out of the vacuum pump machine seal, and circulates and utilizes through the backflow pipeline and the centrifugal pump, not only provides stable cooling water amount, but also effectively reduces wastewater discharge, simultaneously reduces energy consumption in the production process, improves the economic benefit of enterprises, realizes sustainable development and accords with the green production concept.

[0012] 2. The backflow pipeline is sequentially provided with a heat exchanger, a filter and a water distributor from the centrifugal pump to the vacuum pump, which can effectively control and improve the machine seal water temperature, cleanliness and flow characteristics in the pipeline, the heat exchanger can adjust the machine seal water temperature to ensure that it is in a suitable working range, the filter can effectively remove impurities and suspended solids to ensure the quality of the machine seal water, and the water distributor guides the machine seal water in the machine seal water tank back to the input end of the centrifugal pump, thereby improving the efficiency and reliability of the system.

[0013] 3. A pressure relief pipeline is communicated between the backflow pipeline and the machine seal water tank, and a safety valve is arranged on the pressure relief pipeline, when the outlet pressure of the centrifugal pump is overpressure, the overpressure water is flowed back to the machine seal water tank through the pressure relief pipeline through the safety valve, which guarantees the safe operation of the system. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the specific embodiment of the present application or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the description of the specific embodiment or the prior art. Obviously, the drawings described below are only one embodiment of the present application, and those skilled in the art can obtain other drawings according to these drawings without creating any creative labor.

[0015] Figure 1 It is a whole structure schematic view of the present application.

[0016] The marks in the drawings are:

[0017] 1. Desalination water pipeline; 2. Machine seal water tank; 3. Centrifugal pump; 4. Heat exchanger; 5. Safety valve; 6. Filter; 7. Water distributor; 8. Vacuum pump; 9. Heater; 10. Backflow pipeline; 11. Filtering device; 12. Control system; 13. Pressure relief pipeline. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, purposes and effects achieved by the present application easy to understand, the technical scheme in the specific embodiment of the present application is described clearly and completely below to further illustrate the present application. Obviously, the described specific embodiment is only one part of the embodiment of the present application, not all styles.

[0019] The application will be further described below in conjunction with the accompanying drawings Figure 1 The application will be further described below in conjunction with the accompanying drawings

[0020] Embodiment 1

[0021] The application discloses a formaldehyde concentrator waste gas processor machine seal cooling water recovery system, which comprises a machine seal water tank 2, a reflux pipeline 10 is communicated and arranged on the machine seal water tank 2, a desalted water pipeline 1 is communicated and arranged on the reflux pipeline 10, and a centrifugal pump 3 is arranged on the reflux pipeline 10.

[0022] In the embodiment, a heat exchanger 4, a filter 6 and a water distributor 7 are sequentially arranged on the reflux pipeline 10 from the centrifugal pump 3 to the vacuum pump 8, so that the temperature, cleanliness and flow characteristics of the machine seal water in the pipeline can be effectively controlled and improved.

[0023] In the embodiment, a control system 12 is arranged on the reflux pipeline 10, the control system 12 is located between the water distributor 7 and the vacuum pump 8, and the control system 12 comprises a water level and temperature monitoring device, which continuously monitors the water pressure, water temperature and water level changes and adjusts the water level through automatic water supplement when necessary.

[0024] In the embodiment, a filter device 11 is arranged on the machine seal water tank 2, the filter device 11 is communicated with the reflux pipeline 10, and the filter device 11 is used for eliminating mechanical impurities in the cooling water.

[0025] In the embodiment, a heater 9 is installed at the bottom of the machine seal water tank 2, and the water temperature in the machine seal water tank 2 is adjusted through the heater 9.

[0026] In the embodiment, the communication between the return pipeline 10 and the seal water tank 2 is provided with a pressure relief pipeline 13, and the pressure relief pipeline 13 is provided with a safety valve 5; when the outlet pressure of the centrifugal pump 3 is overpressure, the overpressure water is flowed back to the seal water tank 2 through the safety valve 5 and the pressure relief pipeline 13, so that the safe operation of the system is ensured.

[0027] It should be noted that the laboratory personnel can periodically sample and analyze the water quality of the seal water tank 2, and the water quality is optimized by water supplement and drainage; and the flow sensor and the pressure sensor can be installed according to the use requirement, and the running state of the centrifugal pump 3 is adjusted according to the data of the flow sensor and the pressure sensor, so that the required cooling water amount and pressure of the system are met.

[0028] It should be noted that, according to the needs of implementation, each component described in the embodiment of the utility model can be split into more components, or two or more components or parts of components can be combined into new components, so as to realize the purpose of the embodiment of the utility model. The above embodiments only express several implementation ways of the utility model, and the description is more specific and detailed, but it should not be understood as the limitation of the patent scope of the utility model. It should be pointed out that, for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent should be subject to the appended claims.

Claims

1. A formaldehyde concentrator exhaust processor machine seal cooling water recovery system characterized by: The application relates to a machine seal water tank (2) which is provided with a backflow pipeline (10) in communication, the backflow pipeline (10) is provided with a desalted water pipeline (1) in communication, the backflow pipeline (10) is provided with a centrifugal pump (3), the machine seal water tank (2) is used for collecting cooling water flowing out of a vacuum pump (8), and the machine seal water tank (2) is provided with the centrifugal pump (3) in communication through the backflow pipeline (10) to form a cooling water recycling circuit.

2. A concentrated formaldehyde exhaust processor machine seal cooling water recovery system according to claim 1, characterized in that: A heat exchanger (4), a filter (6) and a water distributor (7) are sequentially arranged on the backflow pipeline (10) from the centrifugal pump (3) to the vacuum pump (8).

3. A concentrated formaldehyde exhaust processor machine seal cooling water recovery system according to claim 2, characterized in that: The backflow pipeline (10) is provided with a control system (12), and the control system (12) is located between the water distributor (7) and the vacuum pump (8).

4. A concentrated formaldehyde exhaust processor machine seal cooling water recovery system according to claim 1, characterized in that: The machine seal water tank (2) is provided with a filtering device (11) in communication with the backflow pipeline (10).

5. A concentrated formaldehyde exhaust processor machine seal cooling water recovery system according to claim 1, characterized in that: The bottom of the machine seal water tank (2) is provided with a heater (9).

6. A concentrated formaldehyde exhaust processor machine seal cooling water recovery system according to claim 1, characterized in that: The backflow pipeline (10) and the machine seal water tank (2) are provided with a pressure relief pipeline (13) in communication, and the pressure relief pipeline (13) is provided with a safety valve (5).

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