Molecular sieve steam condensate recovery device and molecular sieve purification system

Abstract

The utility model relates to the technical field of chemical production equipment, and discloses a molecular sieve steam condensate recovery device and a molecular sieve purification system, the molecular sieve steam condensate recovery device comprises a flushing water tank, a flushing water pump, a flushing valve and a conveying valve; the flushing water pump is communicated with the flushing water tank, and the flushing valve is arranged between the flushing water tank and the flushing water pump; the conveying valve communicates with a flushing pump. According to the technical scheme, the steam condensation water is recycled through the flushing water tank, the steam condensation water recycled by the flushing water tank is conveyed to the steam heater in the flushing gap to be recycled, the utilization rate of the steam condensation water is increased, recycling of the steam condensation water is achieved, and waste of resources is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical production equipment, in particular to a molecular sieve steam condensate recovery device and a molecular sieve purification system. Background Art

[0002] The molecular sieve of the air separation purification system needs to use high-pressure steam to heat the contaminated nitrogen to 175°C during the regeneration stage to meet the temperature requirements of the regeneration stage. The high-pressure steam condenses into water after heat exchange with the contaminated nitrogen. At present, most air separation units treat steam condensate by discharging it into the ditch, which makes the steam condensate not effectively utilized, resulting in a waste of resources. Utility Model Content

[0003] The main purpose of the utility model is to provide a molecular sieve steam condensate recovery device, aiming at improving the utilization rate of steam condensate water.

[0004] In order to achieve the above-mentioned purpose, the molecular sieve steam condensate recovery device proposed in the utility model comprises:

[0005] A flushing assembly, the flushing assembly comprising a flushing water tank, a flushing water pump, a first pipeline and a flushing valve; the flushing water tank is used to connect to the steam heater, the flushing water pump is connected to the flushing water tank through the first pipeline, and the flushing valve is arranged on the first pipeline and located between the flushing water tank and the flushing water pump;

[0006] A circulation component, the circulation component includes a second pipeline and a delivery valve; one end of the second pipeline is connected to the first pipeline and is located between the flushing water pump and the flushing valve, and the other end of the second pipeline is used to communicate with the steam heater; the delivery valve is arranged on the second pipeline.

[0007] Optionally, the circulation component further comprises a pressure reducing valve, and the pressure reducing valve is arranged in the second pipeline at a position rearward of the delivery valve along the water flow direction.

[0008] Optionally, the circulation component further includes a pressure gauge, and the pressure gauge is arranged in the second pipeline at a position rearward of the pressure reducing valve along the water flow direction.

[0009] Optionally, the flushing component includes a liquid level meter, which is disposed in the flushing water tank and is electrically connected to the flushing water pump.

[0010] Optionally, the molecular sieve steam condensate recovery device further comprises a refrigeration assembly, wherein the refrigeration assembly comprises a refrigeration component, and the refrigeration component is arranged in the flushing water tank and is used to reduce the water temperature in the flushing water tank.

[0011] Optionally, the refrigeration component further includes a temperature sensor, which is disposed on one end of the first pipeline close to the flushing water tank, and the temperature sensor is electrically connected to the refrigeration component.

[0012] Optionally, the refrigeration component further includes a temperature display screen, which is disposed on an outer wall of the flushing water tank, and is electrically connected to the temperature sensor.

[0013] Optionally, the first pipeline and the second pipeline are both stainless steel pipes.

[0014] Optionally, the circulation component further includes a condensate pump, which is disposed on the second pipeline and located at a position of the second pipeline behind the pressure reducing valve along the water flow direction, and the condensate pump is used to connect to the steam heater.

[0015] The utility model also provides a molecular sieve purification system, which comprises any one of the molecular sieve steam condensate recovery devices mentioned above.

[0016] In the technical scheme of the utility model, the molecular sieve steam condensate recovery device includes a flushing component and a circulation component, the flushing component includes a flushing water tank, a flushing water pump, a first pipeline and a flushing valve; the flushing water tank is used to connect to the steam heater, the flushing water pump is connected to the flushing water tank through the first pipeline, and the flushing valve is arranged on the first pipeline and located between the flushing water tank and the flushing water pump; the circulation component includes a second pipeline and a delivery valve; one end of the second pipeline is connected to the first pipeline and is located between the flushing water pump and the flushing valve, and the other end of the second pipeline is used to be connected to the steam heater; the delivery valve is arranged on the second pipeline. In the technical scheme of the utility model, the steam condensate condensed after heat exchange in the steam heater is collected in the flushing water tank, and the steam condensate is recovered by using the flushing water tank, so that the steam condensate is recycled and the waste of resources is avoided; when it is necessary to flush the air compressor impeller, the flushing water pump and the flushing valve are opened, and the delivery valve is closed, and the water in the flushing water tank is transported to the flushing water pump in the first pipeline, and the dirt on the air compressor impeller can be flushed after being pressurized by the flushing water pump; when it is not necessary to flush the air compressor impeller, the flushing water pump and the flushing valve are closed, and the delivery valve is opened, and the water in the flushing water tank is transported to the steam heater through the first pipeline and the second pipeline, and can continue to exchange heat with the contaminated nitrogen after being heated by the steam heater, and the steam condensate is recovered by using the flushing water tank, so that the flushing work of the air compressor impeller is completed and the steam condensate recovered in the flushing water tank can be transported to the steam heater in the flushing gap of the air compressor impeller for recycling, thereby maximizing the utilization rate of the steam condensate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the subject matter provided by the utility model.

[0019] Description of Figure Numbers:

[0020] Label name Label name 1000 Molecular sieve steam condensate recovery device 23 Pressure reducing valve 11 Flush the water tank 24 Pressure gauge 12 Flushing pump 25 Condensate pump 13 First pipeline 31 Refrigeration parts 14 Flush valve 32 Temperature Sensor 15 Liquid level gauge a Steam Heater 21 Second pipeline b impeller 22 Delivery valve

[0021] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0022] 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 of 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.

[0023] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0024] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0025] Please refer to Figure 1In order to solve the problem of low utilization of steam condensate, the utility model proposes a molecular sieve steam condensate recovery device 1000, comprising:

[0026] A flushing component and a circulation component, the flushing component includes a flushing water tank 11, a flushing water pump 12, a first pipeline 13 and a flushing valve 14; the flushing water tank 11 is used to connect to the steam heater a, the flushing water pump 12 is connected to the flushing water tank 11 through the first pipeline 13, and the flushing valve 14 is arranged on the first pipeline 13 and is located between the flushing water tank 11 and the flushing water pump 12; the circulation component includes a second pipeline 21 and a delivery valve 22; one end of the second pipeline 21 is connected to the first pipeline 13 and is located between the flushing water pump 12 and the flushing valve 14, and the other end of the second pipeline 21 is used to communicate with the steam heater a; the delivery valve 22 is arranged on the second pipeline 21.

[0027] In the technical solution of the utility model, the steam condensate condensed after heat exchange in the steam heater a is collected in the flushing water tank 11, and the steam condensate is recovered by using the flushing water tank 11, so that the steam condensate is recycled and the waste of resources is avoided; when it is necessary to flush the air compressor impeller b, the flushing water pump 12 and the flushing valve 14 are opened, and the delivery valve 22 is closed, and the water in the flushing water tank 11 is delivered to the flushing water pump 12 in the first pipeline 13, and the dirt on the air compressor impeller b can be flushed after being pressurized by the flushing water pump 12; when it is not necessary to flush the air compressor When the compressor impeller b is cleaned, the flushing water pump 12 and the flushing valve 14 are closed, and the delivery valve 22 is opened. The water in the flushing water tank 11 is delivered to the steam heater a via the first pipeline 13 and the second pipeline 21, and is heated by the steam heater a and can continue to exchange heat with the contaminated nitrogen. The steam condensate is recovered by the flushing water tank 11. In this way, the flushing work of the air compressor impeller b is completed, and the steam condensate recovered by the flushing water tank 11 can be delivered to the steam heater a in the flushing gap of the air compressor impeller b for recycling, thereby maximizing the utilization rate of the steam condensate.

[0028] Since the flushing water pump 12 will pressurize the steam condensate in the first pipeline 13 so as to better remove the dirt on the air compressor impeller b, the water pressure of the steam condensate that finally flows into the steam heater a is relatively high, which will affect the normal operation of the steam heater a. In order to solve this problem, in one embodiment, the circulation component also includes a pressure reducing valve 23, which is arranged in the second pipeline 21 at a position behind the delivery valve 22 along the water flow direction. The pressure reducing valve 23 is arranged in the second pipeline 21, which can reduce the water pressure of the steam condensate flowing to the steam heater a to ensure the normal operation of the steam heater a.

[0029] Furthermore, in one embodiment, the circulation component further includes a pressure gauge 24, which is disposed in the second pipeline 21 at a position behind the pressure reducing valve 23 along the water flow direction. The pressure gauge 24 can monitor the water pressure of the steam condensate in the second pipeline 21 in real time, so that the user can adjust the water pressure flowing into the steam heater a according to the indication of the pressure gauge 24, so as to ensure the normal operation of the steam heater a.

[0030] In one embodiment, the flushing component includes a liquid level meter 15, which is arranged in the flushing water tank 11 and is electrically connected to the flushing water pump 12. The liquid level meter 15 is used to monitor the water level in the flushing water tank 11. When flushing is not performed, the liquid level meter 15 sends a signal to the single-chip microcomputer after the water level in the flushing water tank 11 reaches a certain height. The single-chip microcomputer controls the flushing water pump 12 to operate, and the water in the flushing water tank 11 is transported to the steam heater a for circulation. After the water level in the flushing water tank 11 drops to another height, the single-chip microcomputer controls the flushing water pump 12 to stop, thereby stopping the transportation; thus, the automatic circulation water supply of steam condensate water in the molecular sieve steam condensate recovery device 1000 is realized, which is convenient for users to use.

[0031] The height of the flushing water tank 11 is defined as H, the height at which the signal is sent to control the single chip microcomputer to operate the flushing water pump 12 is defined as H1, and the height at which the signal is sent to control the single chip microcomputer to stop the flushing water pump 12 is defined as H2. It can be understood that H1 and H2 satisfy H>H1>H2. In one embodiment, H1=H, H2=H.

[0032] In one embodiment, the molecular sieve steam condensate recovery device 1000 further includes a refrigeration assembly, which includes a refrigeration element 31, which is disposed in the flushing water tank 11 and is used to reduce the water temperature in the flushing water tank 11. The refrigeration element 31 is used to condense part of the steam that has not yet condensed into water, and at the same time, the steam condensate in the flushing water tank 11 can be controlled at an ideal temperature for recycling.

[0033] In one embodiment, the refrigeration component further includes a temperature sensor 32, which is disposed on one end of the first pipeline 13 near the flushing water tank 11, and is electrically connected to the refrigeration element 31. When the temperature measured by the temperature sensor 32 is higher than 40°C, the temperature sensor 32 transmits a signal to the single chip microcomputer, which controls the refrigeration element 31 to start refrigeration to reduce the temperature in the flushing water tank 11. When the temperature sensor 32 measures that the temperature in the flushing water tank 11 drops to 40°C, the temperature sensor 32 transmits a signal to the single chip microcomputer, which controls the refrigeration element 31 to stop. In this way, the water temperature in the flushing water tank 11 is maintained, so that the steam condensate water transported to the steam heater a is at an ideal temperature, so as to improve the working efficiency of the molecular sieve steam condensate recovery device 1000.

[0034] In one embodiment, the refrigeration component further includes a temperature display screen, which is disposed on the outer wall of the flushing water tank 11 and is electrically connected to the temperature sensor 32. The user can obtain the water temperature in the flushing water tank 11 in real time according to the indication on the temperature display screen, so that the user can manually adjust the temperature in the flushing water tank 11.

[0035] It is understandable that the first pipeline 13 and the second pipeline 21 can be plastic pipes or stainless steel pipes. In one embodiment, the first pipeline 13 and the second pipeline 21 are stainless steel pipes. Stainless steel pipes have higher structural strength, are not easily deformed by high temperature, and have a longer service life. Therefore, stainless steel is preferably used as the material of the first pipeline 13 and the second pipeline 21.

[0036] In one embodiment, the circulation component further includes a condensate pump 25, which is arranged on the second pipeline 21 and is located at a position behind the pressure reducing valve 23 along the water flow direction of the second pipeline 21, and the condensate pump 25 is used to connect the steam heater a. The condensate pump 25 can transport steam condensate to the steam heater a, thereby improving the operating efficiency of the molecular sieve steam condensate recovery device 1000; at the same time, since the water pressure output by the flushing water pump 12 is higher than the water pressure output by the condensate pump 25, the condensate pump 25 is arranged behind the pressure reducing valve 23, so that the water pressure output by the flushing water pump 12 after the pressure reduction by the pressure reducing valve 23, the water pressure flowing into the condensate pump 25 is consistent with the water pressure output by the condensate pump 25, thereby ensuring that the flushing water pump 12 will not affect the operating state of the condensate pump 25 after starting, so as to improve the working efficiency of the molecular sieve steam condensate recovery device 1000.

[0037] The utility model also proposes a molecular sieve purification system, which includes a molecular sieve steam condensate recovery device 1000. The specific structure of the molecular sieve steam condensate recovery device 1000 refers to the above embodiment. Since the molecular sieve purification system adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0038] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A molecular sieve steam condensate recovery device (1000), characterized in that: include: A flushing assembly, the flushing assembly comprising a flushing water tank (11), a flushing water pump (12), a first pipeline (13) and a flushing valve (14); the flushing water tank (11) is used to connect to a steam heater (a); the flushing water pump (12) is connected to the flushing water tank (11) through the first pipeline (13); the flushing valve (14) is arranged on the first pipeline (13) and is located between the flushing water tank (11) and the flushing water pump (12); A circulation component, the circulation component comprising a second pipeline (21) and a delivery valve (22); one end of the second pipeline (21) is connected to the first pipeline (13) and is located between the flushing water pump (12) and the flushing valve (14), and the other end of the second pipeline (21) is used to communicate with the steam heater (a); the delivery valve (22) is arranged on the second pipeline (21).

2. The molecular sieve steam condensate recovery device (1000) according to claim 1, characterized in that: The circulation component further comprises a pressure reducing valve (23), and the pressure reducing valve (23) is arranged in the second pipeline (21) at a position behind the delivery valve (22) along the water flow direction.

3. The molecular sieve steam condensate recovery device (1000) according to claim 2, characterized in that: The circulation component further comprises a pressure gauge (24), and the pressure gauge (24) is arranged in the second pipeline (21) at a position behind the pressure reducing valve (23) along the water flow direction.

4. The molecular sieve steam condensate recovery device (1000) according to claim 1, characterized in that: The flushing component comprises a liquid level meter (15), the liquid level meter (15) is arranged in the flushing water tank (11), and the liquid level meter (15) is electrically connected to the flushing water pump (12).

5. The molecular sieve steam condensate recovery device (1000) according to claim 1, characterized in that: The molecular sieve steam condensate recovery device (1000) further comprises a refrigeration assembly, wherein the refrigeration assembly comprises a refrigeration element (31), wherein the refrigeration element (31) is arranged in the flushing water tank (11) and is used to reduce the water temperature in the flushing water tank (11).

6. The molecular sieve steam condensate recovery device (1000) according to claim 5, characterized in that: The refrigeration component further comprises a temperature sensor (32), wherein the temperature sensor (32) is arranged on one end of the first pipeline (13) close to the flushing water tank (11), and the temperature sensor (32) is electrically connected to the refrigeration component (31).

7. The molecular sieve steam condensate recovery device (1000) according to claim 6, characterized in that: The refrigeration component also includes a temperature display screen, which is arranged on the outer wall of the flushing water tank (11) and is electrically connected to the temperature sensor (32).

8. The molecular sieve steam condensate recovery device (1000) according to any one of claims 1 to 7, characterized in that: The first pipeline (13) and the second pipeline (21) are both stainless steel pipelines.

9. The molecular sieve steam condensate recovery device (1000) according to claim 2, characterized in that: The circulation component also includes a condensate pump (25), which is arranged on the second pipeline (21) and is located at a position of the second pipeline (21) behind the pressure reducing valve (23) along the water flow direction, and the condensate pump (25) is used to connect to the steam heater (a).

10. A molecular sieve purification system, characterized in that: The molecular sieve purification system comprises the molecular sieve vapor condensate recovery device (1000) as claimed in any one of claims 1 to 9.

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