CN210265131U - Water lubrication single-screw compressor for nitric acid recovery - Google Patents
Water lubrication single-screw compressor for nitric acid recovery Download PDFInfo
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- CN210265131U CN210265131U CN201921073603.9U CN201921073603U CN210265131U CN 210265131 U CN210265131 U CN 210265131U CN 201921073603 U CN201921073603 U CN 201921073603U CN 210265131 U CN210265131 U CN 210265131U
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Abstract
The utility model provides a water lubrication single screw compressor for nitric acid recovery, which is characterized in that the compressor comprises an air inlet pipeline, the air inlet pipeline is connected with the compressor, the compressor is connected with the upper part of a gas-liquid separation tank, the lower part of the gas-liquid separation tank is connected with a cooler, the cooler is connected with the compressor through a liquid return pipe, the bottom end of the gas-liquid separation tank is connected with an acid discharge electromagnetic valve and an acid discharge valve, the acid discharge electromagnetic valve and the acid discharge valve are connected with the upper part of a preparation tank, the preparation tank is connected with a water supplement electromagnetic valve and a manual water supplement valve, and the water supplement electromagnetic valve and the manual water supplement valve are connected with the; the utility model has the advantages that: the compressor is used in cooperation with the gas-liquid separation tank and the cooler, excessive heat cannot be generated in the compression process, the nitric acid liquid with the temperature increased due to the heat generated in the dissolving process can be cooled by the cooler and reduced to the normal temperature for recycling, and the absorption effect cannot be influenced or the sewage exceeds the standard and the environment cannot be polluted due to the temperature increase.
Description
Technical Field
The utility model relates to a compressor field especially relates to a lubricated single screw compressor of water for nitric acid is retrieved.
Background
In order to facilitate collection and storage of nitric acid steam, the nitric acid steam needs to be compressed and dissolved and absorbed by water, the dissolved nitric acid liquid is input into a special container for storage, and residual waste gas is discharged into a sewage treatment system for treatment. In order to facilitate compression and prevent oil contamination, a dry oil-free screw compressor is adopted in the conventional compression method. In the compression process, nitric acid corrodes metal materials and rubber sealing elements, so that the service performance and service life of a compressor main machine and related parts are greatly reduced, and the nitric acid and lubricating oil are mutually permeated to cause pollution and influence the lubricating effect due to easy damage and leakage of a shaft seal. In addition, a large amount of heat is generated in the compression process and the nitric acid dissolving process, so that the temperature of liquid is increased, the absorption effect is influenced, and the sewage exceeds the standard and causes environmental pollution.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a water lubrication single screw compressor for nitric acid recovery.
In order to realize the purpose, the technical scheme of the utility model is that:
a water lubrication single screw compressor for nitric acid recovery is characterized by comprising an air inlet pipeline, a compressor, a gas-liquid separation tank and a preparation tank, wherein nitric acid steam is input at the input end of the air inlet pipeline, the output end of the air inlet pipeline is connected with the gas input end of the compressor, the output end of the compressor is connected with the input end of the upper part of the gas-liquid separation tank, the output end of the lower part of the gas-liquid separation tank is connected with the input end of a cooler through a pipeline, the output end of the cooler is connected with the liquid input end of the compressor through a liquid return pipe, the bottom end of the gas-liquid separation tank is respectively connected with one end of an acid discharge electromagnetic valve and one end of an acid discharge valve through pipelines, the other ends of the acid discharge electromagnetic valve and the acid discharge valve are respectively connected with the upper part of the preparation tank through pipelines, and the top end of the, the other ends of the water replenishing electromagnetic valve and the manual water replenishing valve are respectively connected with one side of the air inlet pipeline through pipelines,
and the upper end and the lower end of the liquid level controller are respectively communicated with the upper part and the lower part of one side of the gas-liquid separation tank.
Further, the top end of the gas-liquid separation tank is provided with a waste gas discharge pipe.
The utility model has the advantages that: the compressor is matched with the gas-liquid separation tank and the cooler for use, so that excessive heat cannot be generated in the compression process, the nitric acid liquid with the temperature increased due to the heat generated in the dissolving process can be cooled by the cooler and then cooled to the normal temperature for recycling, the absorption effect cannot be influenced due to the temperature increase, the excessive sewage and the environmental pollution cannot be caused, the service performance and the service life of the compressor and related parts are ensured, the absorption effect and the nitric acid quality of the nitric acid are also ensured, and the excessive sewage and the environmental pollution are not easily caused; liquid level control is introduced in the whole operation process, so that maintenance, use and production costs are saved for users, and fault risk loss is reduced.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Reference numerals:
1 air inlet pipeline 2 compressor 3 water supplementing electromagnetic valve 4 manual water supplementing valve 5 waste gas discharge pipe
6 preparation tank 7 gas-liquid separation tank 8 liquid level controller 81 upper liquid level 82 middle liquid level 83 lower liquid level
9 row sour solenoid valve 10 row sour valve 11 cooler 12 liquid return pipe.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model discloses a water lubricated single screw compressor for nitric acid recovery, as shown in figure 1, including air inlet pipeline 1, compressor 2, gas-liquid separation jar 7 and preparation tank 6, compressor 2 is water lubricated single screw compressor 2, the input of air inlet pipeline 1 inputs nitric acid steam, the output of air inlet pipeline 1 is connected with the gas input of compressor 2, the output of compressor 2 is connected with the input of the upper portion of gas-liquid separation jar 7, the output of the lower portion of gas-liquid separation jar 7 is connected with the input of cooler 11 through the pipeline, the output of cooler 11 is connected with the liquid input of compressor 2 through liquid return pipe 12, the bottom of gas-liquid separation jar 7 is connected with one end of acid discharge solenoid valve 9 and acid discharge valve 10 respectively through the pipeline, the other end of acid discharge solenoid valve 9 and acid discharge valve 10 is connected with the upper portion of preparation tank 6 through the pipeline respectively, the top of the preparation tank 6 is connected with one ends of the water replenishing electromagnetic valve 3 and the manual water replenishing valve 4 through pipelines respectively, and the other ends of the water replenishing electromagnetic valve 3 and the manual water replenishing valve 4 are connected with one side of the air inlet pipeline 1 through pipelines respectively.
Wherein, one side of the gas-liquid separation tank 7 is provided with a liquid level controller 8, and the upper end and the lower end of the liquid level controller 8 are respectively communicated with the upper part and the lower part of one side of the gas-liquid separation tank 7.
The main materials of the compressor 2 and related parts are all in a full stainless steel structure, the structure of the sealing part of the compressor 2 is made of a perfluoro rubber material, nitric acid corrosion is prevented, and the service performance and the service life of the compressor 2 and the whole compression recovery system are ensured.
During specific implementation, nitric acid steam enters the compressor 2 through the air inlet pipeline 1, is mixed with water, is compressed and dissolved, is separated through the gas-liquid separation tank 7, separated waste gas is discharged into the sewage treatment system through the waste gas discharge pipe 5 to be treated, separated nitric acid liquid is cooled through the cooler 11, and then enters the compressor 2 again through the liquid return pipe 12 under the action of system pressure, so that the lubricating and cooling and nitric acid absorption effects of a machine are guaranteed, and the operation is circulated.
When the compressor 2 normally works, nitric acid vapor enters the compressor 2 through the air inlet pipeline 1, is mixed with water, is compressed and dissolved, is separated through the gas-liquid separation tank 7, separated waste gas is discharged into the sewage treatment system through the waste gas discharge pipe 5 for treatment, and separated nitric acid liquid is cooled through the cooler 11 and then enters the compressor 2 again through the liquid return pipe 12 under the action of system pressure so as to ensure the lubricating and cooling and nitric acid absorption effects of the machine, and the operation is circulated.
Because of the isothermal compression characteristic of the compressor 2, excessive heat cannot be generated in the compression process, the nitric acid liquid with the temperature increased due to the heat generated in the dissolving process can be cooled by the cooler 11 and reduced to the normal temperature for recycling, the absorption effect cannot be influenced due to the temperature increase, and the excessive sewage and the environmental pollution cannot be caused.
As shown in figure 1, a liquid level controller 8 is arranged on a gas-liquid separation tank 7, three control liquid levels of an upper liquid level 81, a middle liquid level 82 and a lower liquid level 83 are divided, when the normal operation is carried out, the liquid level is between the upper liquid level 81 and the lower liquid level 83, when the liquid level of the liquid level controller 8 is raised to the upper liquid level 81 and the concentration of nitric acid is higher, an acid discharge electromagnetic valve 9 is opened, the nitric acid liquid in the gas-liquid separation tank 7 is discharged into a preparation tank 6 under the action of system pressure and is separated from water in the preparation tank 6, when the liquid level of the liquid level controller 8 is lowered to the lower liquid level 83, the acid discharge electromagnetic valve 9 is closed, a water supplement electromagnetic valve 3 is opened, the water separated from the preparation tank 6 is mixed and compressed with nitric acid vapor under the action of suction force and then enters the gas-liquid separation tank 7 again to supplement the liquid level, the concentration of nitric acid is lowered, the, the water replenishing electromagnetic valve 3 is closed, the operation is repeated in such a circulating way, and when temporary manual water replenishing or acid discharging is needed, the manual water replenishing valve 4 or the acid discharging valve 10 is opened to directly replenish water or discharge acid.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (2)
1. A water lubrication single screw compressor for nitric acid recovery is characterized by comprising an air inlet pipeline, a compressor, a gas-liquid separation tank and a preparation tank, wherein nitric acid steam is input at the input end of the air inlet pipeline, the output end of the air inlet pipeline is connected with the gas input end of the compressor, the output end of the compressor is connected with the input end of the upper part of the gas-liquid separation tank, the output end of the lower part of the gas-liquid separation tank is connected with the input end of a cooler through a pipeline, the output end of the cooler is connected with the liquid input end of the compressor through a liquid return pipe, the bottom end of the gas-liquid separation tank is respectively connected with one end of an acid discharge electromagnetic valve and one end of an acid discharge valve through pipelines, the other ends of the acid discharge electromagnetic valve and the acid discharge valve are respectively connected with the upper part of the preparation tank through pipelines, and the top end of the, the other ends of the water replenishing electromagnetic valve and the manual water replenishing valve are respectively connected with one side of the air inlet pipeline through pipelines,
and the upper end and the lower end of the liquid level controller are respectively communicated with the upper part and the lower part of one side of the gas-liquid separation tank.
2. The compressor of claim 1, wherein the top end of the gas-liquid separation tank is provided with an exhaust gas discharge pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921073603.9U CN210265131U (en) | 2019-07-10 | 2019-07-10 | Water lubrication single-screw compressor for nitric acid recovery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921073603.9U CN210265131U (en) | 2019-07-10 | 2019-07-10 | Water lubrication single-screw compressor for nitric acid recovery |
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| CN210265131U true CN210265131U (en) | 2020-04-07 |
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| CN201921073603.9U Active CN210265131U (en) | 2019-07-10 | 2019-07-10 | Water lubrication single-screw compressor for nitric acid recovery |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114310143A (en) * | 2021-12-14 | 2022-04-12 | 甘肃银光化学工业集团有限公司 | Method for repairing corrosion of sealing surface of compressor under strong acid working condition |
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2019
- 2019-07-10 CN CN201921073603.9U patent/CN210265131U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114310143A (en) * | 2021-12-14 | 2022-04-12 | 甘肃银光化学工业集团有限公司 | Method for repairing corrosion of sealing surface of compressor under strong acid working condition |
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