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CN-122012137-A - Zero-emission airtight operation device for normal-pressure oil tank

CN122012137ACN 122012137 ACN122012137 ACN 122012137ACN-122012137-A

Abstract

The zero-emission airtight operation device of the normal pressure oil tank comprises a first adsorption cylinder, a second adsorption cylinder, a first program control valve, a second program control valve, a third program control valve, a fourth program control valve, a fifth program control valve, a sixth program control valve, a seventh program control valve, an eighth program control valve, a regenerated gas pipeline, a clean gas pipeline, a first normal pressure oil tank, a second normal pressure oil tank and a control cabinet; the zero-emission closed operation device of the normal-pressure oil tank can continuously operate without interruption, can not cause the external discharge of harmful gases such as Volatile Organic Compounds (VOCs) and the like during maintenance, is completely closed, can not cause the leakage of the harmful gases such as the Volatile Organic Compounds (VOCs) and the like, can recycle the adsorbent, can not have solid waste pollutants, can be directly used on the built oil tank, does not need to additionally modify the oil tank, is directly connected with the original vent holes, can always keep the pressure in the oil tank to be micro-positive pressure in the operation of the system, does not need external pressurization or nitrogen sealing measures, can ensure the operation safety of the oil tank without any communicating part between the oil tank and the outside, can not cause the external discharge of waste gas, can not cause the external discharge of greasy dirt in the operation of the equipment, can be recycled by the whole system, and can be re-sent into the oil tank after being recycled by the equipment, and has no energy consumption.

Inventors

  • SHENG WENBIN

Assignees

  • 中国建材国际工程集团有限公司

Dates

Publication Date
20260512
Application Date
20200907

Claims (10)

  1. 1. The zero-emission airtight operation method of the normal-pressure oil tank is characterized by comprising the following steps of: The zero-emission airtight operation device of the normal pressure oil tank comprises a first adsorption cylinder (1) and a second adsorption cylinder (2), wherein the first end of the first adsorption cylinder is connected with a clean gas pipeline and a regenerated gas pipeline respectively, the second end of the first adsorption cylinder is connected with a vent hole of the first normal pressure oil tank and a vent hole pipeline of the second normal pressure oil tank respectively, and the first end of the second adsorption cylinder is connected with the clean gas pipeline and the regenerated gas pipeline respectively, and the second end of the second adsorption cylinder is connected with the vent hole of the first normal pressure oil tank and the vent hole pipeline of the second normal pressure oil tank respectively; Controlling the opening or closing of a program control valve on a connecting pipeline, wherein when the first adsorption cylinder (1) performs an adsorption process, the second adsorption cylinder (2) performs a regeneration process, and when the first adsorption cylinder (1) is switched from the adsorption process to the regeneration process, the second adsorption cylinder (2) is correspondingly switched from the regeneration process to the adsorption process; When the adsorption cylinder performs an adsorption flow, the clean gas after the treatment is discharged into the atmosphere through a pipeline, and the waste gas in the upper space of the normal pressure oil tank with the increased oil level enters the adsorption cylinder performing the adsorption flow through the pipeline, and the volatile organic compounds VOCs in the waste gas are treated by the bottom adsorbent of the adsorption cylinder; When the adsorption cylinder carries out the regeneration flow, the regenerated gas enters the adsorption cylinder for carrying out the regeneration flow through a pipeline, the volatile organic compounds VOCs harmful gas is resolved from the adsorbent at the bottom of the adsorption cylinder, and the regenerated waste gas is sent into the normal pressure oil tank with the lowered oil level through the pipeline, so that the normal pressure oil tank with the lowered oil level is maintained at positive pressure.
  2. 2. The zero-emission airtight operation method of the normal-pressure oil tank according to claim 1 is characterized in that the zero-emission airtight operation device of the normal-pressure oil tank comprises a first adsorption cylinder (1), a second adsorption cylinder (2), a first program-controlled valve (4), a second program-controlled valve (5), a third program-controlled valve (6), a fourth program-controlled valve (7), a fifth program-controlled valve (8), a sixth program-controlled valve (9), a seventh program-controlled valve (10), an eighth program-controlled valve (11), a regeneration gas pipeline, a clean gas pipeline, a first normal-pressure oil tank, a second normal-pressure oil tank and a control cabinet; The first end of the first adsorption cylinder (1) is respectively connected with the first program-controlled valve (4) and the third program-controlled valve (6) through pipelines, the second end of the first adsorption cylinder (1) is respectively connected with the fifth program-controlled valve (8) and the seventh program-controlled valve (10) through pipelines, the first end of the second adsorption cylinder (2) is respectively connected with the second program-controlled valve (5) and the fourth program-controlled valve (7) through pipelines, the second end of the second adsorption cylinder (2) is respectively connected with the sixth program-controlled valve (9) and the eighth program-controlled valve (11) through pipelines, the first program-controlled valve (4) and the second program-controlled valve (5) are respectively connected with the clean gas pipeline through pipelines, the third program-controlled valve (6) and the fourth program-controlled valve (7) are respectively connected with the regenerated gas pipeline through pipelines, the fifth program-controlled valve (8) and the sixth program-controlled valve (9) are respectively connected with the first oil tank through pipelines, and the seventh program-controlled valve (11) through pipelines are respectively connected with the normal pressure vent (10) through pipelines; The control cabinet is characterized in that the first program control valve (4), the second program control valve (5), the third program control valve (6), the fourth program control valve (7), the fifth program control valve (8), the sixth program control valve (9), the seventh program control valve (10) and the eighth program control valve (11) are respectively connected with the control cabinet circuit.
  3. 3. The zero-emission airtight operation method of an atmospheric oil tank according to claim 2, wherein when the first adsorption cylinder (1) performs an adsorption process, the control cabinet controls the first programmable valve (4) to be opened and the second programmable valve (5) to be closed, and at this time, the first adsorption cylinder (1), the first programmable valve (4) and the clean gas pipeline are sequentially connected through pipelines, and clean gas after the treatment is discharged into the atmosphere through the pipeline (K) -pipeline (J) -pipeline (I) -pipeline (H) -pipeline (G); if the oil level in the first normal pressure oil tank rises at the moment, the control cabinet controls the fifth program control valve (8) to be opened, the seventh program control valve (10) to be closed, at the moment, the vent hole of the first normal pressure oil tank, the fifth program control valve (8) and the first adsorption cylinder (1) are sequentially connected through pipelines, the upper space waste gas of the first normal pressure oil tank enters the first adsorption cylinder (1) through a pipeline (M) -pipeline (N) -pipeline (O) -pipeline (U), and Volatile Organic Compounds (VOCs) in the waste gas are treated through the bottom adsorbent of the first adsorption cylinder (1); If the oil level in the second normal pressure oil tank rises at this time, the seventh program control valve (10) is controlled by the control cabinet to be opened, and the fifth program control valve (8) is closed, at this time, the vent hole of the second normal pressure oil tank, the seventh program control valve (10) and the first adsorption cylinder (1) are sequentially connected through pipelines, and the upper space waste gas of the second normal pressure oil tank enters the first adsorption cylinder (1) through a pipeline (Q) -pipeline (R) -pipeline (S) -pipeline (T) -pipeline (U), and the volatile organic compounds VOCs harmful gas in the waste gas is treated by the bottom adsorbent of the first adsorption cylinder (1).
  4. 4. The zero-emission airtight operation method of an atmospheric oil tank according to claim 2, wherein when the second adsorption cylinder (2) performs an adsorption process, the control cabinet controls the second programmable valve (5) to be opened, and the first programmable valve (4) to be closed, and at this time, the second adsorption cylinder (2), the second programmable valve (5) and the clean gas pipeline are sequentially connected through pipelines, and clean gas after the treatment is discharged into the atmosphere through the pipeline (F) -pipeline (L) -pipeline (I) -pipeline (H) -pipeline (G); if the oil level in the first normal pressure oil tank rises at the moment, the control cabinet controls the sixth program control valve (9) to be opened, the eighth program control valve (11) to be closed, at the moment, the vent hole of the first normal pressure oil tank, the sixth program control valve (9) and the second adsorption cylinder (2) are sequentially connected through pipelines, the upper space waste gas of the first normal pressure oil tank enters the second adsorption cylinder (2) through a pipeline (M) -pipeline (N) -pipeline (O) -pipeline (P), and Volatile Organic Compounds (VOCs) in the waste gas are treated through the bottom adsorbent of the second adsorption cylinder (2); If the oil level in the second normal pressure oil tank rises at this time, then by the switch board control eighth program control valve (11) is opened, just sixth program control valve (9) is closed, and the air vent of second normal pressure oil tank this moment eighth program control valve (11) with second adsorption cylinder (2) are pipeline connection in proper order, the upper portion space waste gas of second normal pressure oil tank gets into through pipeline (Q) -pipeline (R) -pipeline (S) -pipeline (V) -pipeline (P) second adsorption cylinder (2), by the bottom adsorbent of second adsorption cylinder (2) is handled volatile organic compounds VOCs harmful gas in the waste gas.
  5. 5. The zero-emission airtight operation method of an atmospheric oil tank according to claim 2, wherein when the first adsorption cylinder (1) performs a regeneration process, the control cabinet controls the third programmable valve (6) to be opened, and the fourth programmable valve (7) to be closed, at the moment, the regenerated gas pipeline, the third programmable valve (6) and the first adsorption cylinder (1) are sequentially connected through pipelines, and the regenerated gas enters the first adsorption cylinder (1) through a pipeline (a) -a pipeline (B) -a pipeline (C) -a pipeline (D) -a pipeline (E) -a pipeline (K), so that Volatile Organic Compounds (VOCs) are resolved from a bottom adsorbent of the first adsorption cylinder (1); If the oil level in the first normal pressure oil tank is reduced at the moment, the control cabinet controls the fifth program control valve (8) to be opened, the seventh program control valve (10) to be closed, at the moment, the first adsorption cylinder (1), the fifth program control valve (8) and the vent hole of the first normal pressure oil tank are sequentially connected through pipelines, and regenerated waste gas is sent into the first normal pressure oil tank through a pipeline (U) -pipeline (O) -pipeline (N) -pipeline (M) to maintain positive pressure in the first normal pressure oil tank; If the oil level in the second normal pressure oil tank is reduced at this time, the control cabinet controls the seventh program control valve (10) to be opened, and the fifth program control valve (8) to be closed, at this time, the first adsorption cylinder (1) and the seventh program control valve (10) are connected with the vent holes of the second normal pressure oil tank through pipelines in sequence, and regenerated waste gas is sent into the second normal pressure oil tank through the pipeline (U) -pipeline (T) -pipeline (S) -pipeline (R) -pipeline (Q), so that the second normal pressure oil tank is maintained to be in positive pressure.
  6. 6. The zero-emission airtight operation method of an atmospheric oil tank according to claim 2, wherein when the second adsorption cylinder (2) performs a regeneration process, the control cabinet controls the fourth program control valve (7) to be opened, and the third program control valve (6) to be closed, at the moment, the regenerated gas pipeline, the fourth program control valve (7) and the second adsorption cylinder (2) are sequentially connected through pipelines, and the regenerated gas enters the second adsorption cylinder (2) through a pipeline (a) -a pipeline (B) -a pipeline (C) -a pipeline (D) -a pipeline (E) -a pipeline (F), so that Volatile Organic Compounds (VOCs) are resolved from a bottom adsorbent of the second adsorption cylinder (2); If the oil level in the first normal pressure oil tank is reduced at the moment, the control cabinet controls the sixth program control valve (9) to be opened, and the eighth program control valve (11) to be closed, at the moment, the second adsorption cylinder (2), the sixth program control valve (9) and the vent hole of the first normal pressure oil tank are sequentially connected through pipelines, and regenerated waste gas is sent into the first normal pressure oil tank through a pipeline (P) -pipeline (O) -pipeline (N) -pipeline (M) to maintain positive pressure in the first normal pressure oil tank; If the oil level in the second normal pressure oil tank drops at the moment, the eighth program control valve (11) is controlled by the control cabinet to be opened, the sixth program control valve (9) is closed, at the moment, the second adsorption cylinder (2) and the vent holes of the eighth program control valve (11) and the second normal pressure oil tank are sequentially connected through pipelines, and regenerated waste gas is sent into the second normal pressure oil tank through the pipeline (P) -pipeline (V) -pipeline (S) -pipeline (R) -pipeline (Q), so that the second normal pressure oil tank is maintained to be in positive pressure.
  7. 7. The method for zero-emission closed operation of an atmospheric tank according to claim 1, wherein the bottom adsorbent is one or more of activated carbon, resin or fiber.
  8. 8. The method for zero-emission airtight operation of an atmospheric oil tank according to claim 2, wherein the regeneration gas is normal-temperature regeneration gas or high-temperature regeneration gas.
  9. 9. The method for zero release closed operation of a normal pressure oil tank according to claim 8, wherein the regenerated gas is one or more of air, kiln gas or high temperature steam.
  10. 10. The zero-emission closed operation method of the normal-pressure oil tank according to claim 8, wherein when the regenerated gas is a non-high-temperature regenerated gas, the method further comprises the step of heating the regenerated gas to a certain regeneration temperature by a heater (3) adopting an electric heating process and then regenerating the adsorbent; the first end of the heater (3) is connected with the regenerated gas pipeline, and the second end of the heater (3) is connected with the third program-controlled valve (6) and the fourth program-controlled valve (7) respectively.

Description

Zero-emission airtight operation device for normal-pressure oil tank The application relates to a split application of an application patent application with the application number of CN202010931352.4 and the application date of 2020, 09 and 07, and the application is named as a zero-emission closed operation device of an atmospheric oil tank. Technical Field The invention relates to the field of oil gas recovery, in particular to a zero-emission closed operation device of a normal pressure oil tank. Background The vent hole of the normal pressure oil tank is communicated with the atmosphere, and waste gas containing a large amount of Volatile Organic Compounds (VOCs) and other harmful substances can be generated in the operation process, so that the waste gas is discharged, the existing technology mostly adopts an adsorption method, the quantity of the generated waste adsorbent is huge, and the problems of difficult treatment and environmental pollution exist at the same time. Therefore, a zero-emission closed operation device for the normal-pressure oil tank is needed. Disclosure of Invention The invention aims to overcome the defects in the prior art and provides a zero-emission closed operation device for a normal-pressure oil tank. In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: The zero-emission closed operation device of the normal pressure oil tank comprises a first adsorption cylinder, a second adsorption cylinder, a first program control valve, a second program control valve, a third program control valve, a fourth program control valve, a fifth program control valve, a sixth program control valve, a seventh program control valve, an eighth program control valve, a regenerated gas pipeline, a clean gas pipeline, a first normal pressure oil tank, a second normal pressure oil tank and a control cabinet; One end of the first adsorption cylinder is connected with the first program-controlled valve and the third program-controlled valve respectively, the other end of the first adsorption cylinder is connected with the fifth program-controlled valve and the seventh program-controlled valve respectively, one end of the second adsorption cylinder is connected with the second program-controlled valve and the fourth program-controlled valve respectively, the other end of the second adsorption cylinder is connected with the sixth program-controlled valve and the eighth program-controlled valve respectively, the first program-controlled valve and the second program-controlled valve are connected with the clean gas pipeline respectively, the third program-controlled valve and the fourth program-controlled valve are connected with the regenerated gas pipeline respectively, the fifth program-controlled valve and the sixth program-controlled valve are connected with the vent pipeline of the first normal pressure oil tank respectively, and the seventh program-controlled valve and the eighth program-controlled valve are connected with the vent pipeline of the second normal pressure oil tank respectively; The first program-controlled valve, the second program-controlled valve, the third program-controlled valve, the fourth program-controlled valve, the fifth program-controlled valve, the sixth program-controlled valve, the seventh program-controlled valve and the eighth program-controlled valve are respectively connected with the control cabinet through circuits. Preferably, the control cabinet controls the opening or closing of the first program control valve, the second program control valve, the third program control valve, the fourth program control valve, the fifth program control valve, the sixth program control valve, the seventh program control valve and the eighth program control valve. Further preferably, when the regenerated gas pipeline, the third program-controlled valve and the first adsorption cylinder are required to be connected through pipelines in sequence, and the second adsorption cylinder, the second program-controlled valve and the clean gas pipeline are required to be connected through pipelines in sequence, the control cabinet controls the second program-controlled valve and the third program-controlled valve to be opened, and the first program-controlled valve and the fourth program-controlled valve to be closed. Further preferably, when the regenerated gas pipeline, the fourth program control valve and the second adsorption cylinder are required to be connected through pipelines in sequence, and the first adsorption cylinder, the first program control valve and the clean gas pipeline are connected through pipelines in sequence, the control cabinet controls the first program control valve and the fourth program control valve to be opened, and the second program control valve and the third program control valve to be closed. Further preferably, when the vent hole of the first normal pressure oil tank, the fifth program control valve and the