CN210952001U

CN210952001U - Refrigerating system for oil gas liquefaction treatment

Info

Publication number: CN210952001U
Application number: CN201921605108.8U
Authority: CN
Inventors: 王志军
Original assignee: Qingdao Langyuan Environmental Protection Equipment Co ltd
Current assignee: Qingdao Langyuan Environmental Protection Equipment Co ltd
Priority date: 2019-09-25
Filing date: 2019-09-25
Publication date: 2020-07-07
Anticipated expiration: 2029-09-25

Abstract

The utility model relates to the technical field of oil gas liquefaction treatment, in particular to a refrigerating system for oil gas liquefaction treatment, which comprises a refrigerating compressor and an oil tank, wherein a pipeline is connected with a condenser, a condensing fan is arranged above the condenser, an absorption and desorption system is arranged above the condensing fan, a drying filter is arranged on the pipeline extending to the outside of the left side of the condenser, a throttling device is arranged above the left side of the drying filter, a freezing and refrigerating pipeline is connected on the pipeline extending to the left side of the throttling device, a cold storage and insulation box and an oil gas pipeline are connected above the oil tank, and a freezing and insulation box is arranged outside the oil gas pipeline. The condensation effect is good, most of oil gas can be condensed and recovered, the energy consumption is reduced, and the aims of energy conservation and emission reduction are favorably fulfilled.

Description

Refrigerating system for oil gas liquefaction treatment

Technical Field

The utility model relates to an oil gas liquefaction handles technical field, specifically is a refrigerating system that oil gas liquefaction was handled.

Background

In the process of using at the filling station, can volatilize and produce oil gas, because the volatile oil gas direct discharge of filling station has the pollution to the atmosphere, does not accord with national standard, consequently need utilize to reach national emission standard after the active carbon adsorption desorption. With the increasing of fuel sales in China, the increasing of pollution control force and the increasing of pollution control standard of governments, the oil-gas pollution and safety problems of gas stations begin to be emphasized, so that various oil-gas recovery systems are widely applied to the gas stations. The oil gas recovery means that in the process of loading and unloading gasoline and refueling vehicles, volatile gasoline oil gas is collected, and the purpose of recycling is achieved by one or two methods of absorption, adsorption or condensation and the like, or the pollution of the oil gas is reduced, or the oil gas is changed into liquid from gas state and then changed into gasoline again.

Among the prior art, do not set up refrigerant and condensing system's heat transfer structure for the condensation effect is along with the rising of condensing system temperature and the variation, does not do the preliminary treatment to the vapor in the oil gas, leads to later stage condensation oil gas effect not good, also does not change the frost device, leads to vapor to frost in cold-stored evaporimeter, and the accumulation makes the refrigeration efficiency of cold-stored evaporimeter more and more low day by month. To this end, we propose a refrigeration system for the liquefaction process of oil and gas.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a refrigerating system that oil gas liquefaction was handled to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a refrigerating system for oil-gas liquefaction treatment comprises a refrigerating compressor and an oil tank, wherein a first pipeline is connected above the right side of the refrigerating compressor, a second pipeline is connected in the middle of the left side of the refrigerating compressor, the first pipeline is connected with a condenser, a condensing fan is arranged above the condenser, an absorption and desorption system is arranged above the condensing fan, a drying filter is arranged outside the first pipeline extending to the left side of the condenser, a throttling device is arranged above the left side of the drying filter, the first pipeline extending to the left side of the throttling device is connected with a freezing and refrigerating pipeline, a cold storage and insulation box and an oil-gas pipeline are connected above the oil tank, a freezing and insulation box is arranged outside the oil-gas pipeline, the other end of the freezing and refrigerating pipeline is connected with the oil-gas pipeline, a cold storage evaporator and an explosion-proof electric heating, the bottom of the cold storage and heat preservation box is connected with a water storage and oil storage tank through a pipeline, and a pressure controller is connected between the first pipeline and the second pipeline.

As the utility model discloses a refrigerating system preferred scheme that oil gas liquefaction was handled, oil gas pipeline top left side extends to freezing insulation can outside and is provided with into the pipe, and oil gas pipeline bottom right side extends to freezing insulation can outside and is provided with the exit tube, advances the oil gas pipeline that the tub top was provided with and cold-stored insulation can intercommunication one, and the exit tube top is provided with and inhales, the oil gas pipeline two of desorption headtotail.

As the utility model discloses a refrigerating system preferred scheme that oil gas liquefaction was handled inhales, desorption system top is provided with the delivery pipe, installs on the delivery pipe and is used for detecting the gas concentration meter whether up to standard of discharge gas concentration.

As the utility model discloses a refrigerating system preferred scheme of oil gas liquefaction processing, cold-stored evaporimeter one end extends to cold-stored insulation can outside and vapour and liquid separator is connected, and the cold-stored evaporimeter other end extends to cold-stored insulation can outside and advances union coupling.

As the utility model discloses a refrigerating system preferred scheme of oil gas liquefaction processing, oil tank top left side sets up and the play oil pipe of cold-stored insulation can intercommunication, and oil tank top right side is provided with the oil pipe that returns with the oil gas pipeline intercommunication.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up refrigeration compressor and be convenient for compress into the highly compressed gas of high temperature with the refrigerant and get into the condenser, pressure controller can realize high-low pressure protection, protects refrigeration compressor, through opening explosion-proof electric heater unit, can change the frost to cold-stored insulation can and freezing insulation can, improves refrigeration efficiency.

2. The utility model continuously exchanges heat with the cold storage insulation box and the oil gas pipeline by arranging the circulating refrigerant, the refrigerant takes away the heat in the cold storage insulation box and the oil gas pipeline in the flowing process, the temperature of the cold storage insulation box and the oil gas pipeline is reduced, thereby the oil gas can be better condensed, the gaseous oil gas molecules are reduced, the emission is reduced, the oil gas in the oil tank enters the cold storage insulation box through the oil outlet pipe, the vapor in the oil gas and a small part of gasoline are condensed in the cold storage insulation box, the condensed liquid water and the gasoline enter the water storage oil storage tank, the vapor in the gasoline is pretreated by the method, the condensation effect is good, a small part of incompletely condensed gasoline molecules in the oil gas pipeline enter the absorption and desorption system, the gasoline is filtered and desorbed and is discharged to the outside, most of oil gas condensation can be recovered, and the economic benefit is improved, reduces energy consumption and is beneficial to realizing the purposes of energy conservation and emission reduction.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a flow chart of the refrigeration system of the present invention;

fig. 3 is a flow chart of the condensing system of the present invention.

In the figure: 1. a refrigeration compressor; 2. a condenser; 3. a condensing fan; 4. drying the filter; 5. a throttling device; 6. a refrigeration circuit; 7. an oil and gas pipeline; 8. a refrigerated evaporator; 9. a gas-liquid separator; 10. an explosion-proof electric heating device; 11. a pressure controller; 12. freezing the incubator; 13. refrigerating the incubator; 14. a water storage and oil storage tank; 15. a gas concentration meter; 16. an oil tank; 17. an absorption and desorption system.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the invention and its embodiments, and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in the present invention can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, a refrigeration system for oil gas liquefaction treatment comprises a refrigeration compressor 1 and an oil tank 16, wherein a refrigerant is filled in the refrigeration compressor 1, the refrigerant is a working fluid for transferring heat energy and generating a refrigeration effect in a refrigeration air-conditioning system, a first pipeline is connected above the right side of the refrigeration compressor 1, a second pipeline is connected in the middle of the left side of the refrigeration compressor 1, a pressure controller 11 is commonly connected between the first pipeline and the second pipeline, the first pipeline is connected with a condenser 2, a condensing fan 3 is arranged above the condenser 2, the condensing fan 3 is matched with the condenser 2 to condense the refrigerant in the first pipeline, in order to improve the condensation effect, the first pipeline in the condenser 2 is in a bent goose neck pipe shape, so that the refrigerant has a long time to pass through the condenser 2 and a good condensation effect, an absorption and desorption system 17 is arranged above the condensing fan 3, and a, a gas concentration meter 15 for detecting whether the concentration of the discharged gas reaches the standard is arranged on the discharge pipe, the gas concentration meter 15 mainly comprises a commercially available gas concentration sensor, a first pipeline extends to the left side of the condenser 2 and is externally provided with a drying filter 4, a throttling device 5 is arranged above the left side of the drying filter 4 and is a capillary tube or an expansion valve and the like, the first pipeline extends to the left side of the throttling device 5 and is connected with a freezing and refrigerating pipeline 6, a refrigerating and insulating box 13 and an oil gas pipeline 7 are connected above an oil tank 16, the left side of the top of the oil tank 16 is provided with an oil outlet tube communicated with the refrigerating and insulating box 13, the right side of the top of the oil tank 16 is provided with an oil return tube communicated with the oil gas pipeline 7, the outside of the oil gas pipeline 7 is provided with a freezing and insulating box 12, the left side of the, the top of the inlet pipe is provided with a first oil-gas pipeline communicated with the cold storage insulation box 13, the top of the outlet pipe is provided with a second oil-gas pipeline connected with an absorption and desorption system 17, the other end of the freezing refrigeration pipeline 6 is connected with the outlet pipe on the oil-gas pipeline 7, the cold storage insulation box 13 is internally provided with a cold storage evaporator 8 and an explosion-proof electric heating device 10, the explosion-proof electric heating device 10 is connected with a power supply and a control switch, the explosion-proof electric heating device 10 is started to defrost the cold storage insulation box 13 and the cold storage insulation box 12, water vapor is frosted in the cold storage evaporator 8, the refrigeration efficiency is reduced, the liquefaction effect on gasoline is poor, the cold storage evaporator 8 is connected with the oil-gas pipeline 7, the other end of the cold storage evaporator 8 is connected with a gas-liquid separator 9, one end of the cold storage evaporator 8 extends to the outside of the cold storage insulation box 13 and is connected with, the other end of the pipeline II is connected with a gas-liquid separator 9, and the bottom of the cold storage insulation box 13 is connected with a water storage and oil storage tank 14 through a pipeline.

As shown in fig. 2, when the refrigeration system is in operation, a refrigerant is compressed into a high-temperature and high-pressure gas in a refrigeration compressor 1 and enters a condenser 2, a condensing fan 3 cools the condenser 2, the refrigerant is condensed into a low-temperature and high-pressure liquid in the condenser 2 and enters a drying filter 4, the refrigerant enters a throttling device 5 after being dried and filtered, then the refrigerant is expanded in a freezing and refrigeration pipeline 6 and a refrigeration evaporator 8 in a diffusion manner to absorb and take away heat in an oil-gas pipeline 7 and a refrigeration insulation box 13, after the refrigerant enters a gas-liquid separator 9, the unevaporated liquid refrigerant is left in the gas-liquid separator 9, a gaseous refrigerant returns to the refrigeration compressor 1 through a second pipeline, a pressure controller 11 can realize high-low pressure protection, when the exhaust pressure of a first pipeline of the refrigeration compressor 1 is greater than 35bar (data is only used for illustrating principles) or the return pressure of the second pipeline is less than 0., as soon as one is satisfied, the plant stops working, thereby protecting the refrigeration compressor 1.

As shown in fig. 3, when the oil-gas condensation system works, oil gas in the oil tank 16 enters the cold storage insulation box 13 through the oil outlet pipe, water vapor and a small part of gasoline in the oil gas are condensed in the cold storage insulation box 13, condensed liquid water and gasoline enter the water storage oil storage tank 14, uncondensed oil gas enters the oil-gas pipeline 7 through the first oil-gas pipeline to condense most of gasoline molecules, condensed gasoline in the oil-gas pipeline 7 returns to the oil tank 16 through the oil return pipe, and the incompletely condensed gasoline molecules in the oil-gas pipeline 7 enter the absorption and desorption system, are filtered and desorbed and are discharged to the outside.

In summary, the following steps: the refrigerant expands in the freezing and refrigerating pipeline 6 and the refrigerating evaporator 8 by diffusion, absorbs and takes away the heat in the oil gas pipeline 7 and the refrigerating insulation box 13, so that the temperature of the oil gas pipeline 7 and the refrigerating insulation box 13 is reduced, the oil gas entering the refrigerating insulation box 13 is condensed by the refrigerating insulation box 13, and the condensed liquid water and gasoline enter the water storage and oil storage tank 14; then the oil gas that does not condense enters into oil gas pipeline 7, the oil gas pipeline 7 by the reduced temperature condenses the petrol molecule, then the condensation petrol in the oil gas pipeline 7 returns to oil tank 16 through returning the oil pipe, through setting up the refrigerant and passing through compressor 1 and constantly circulating, make the refrigerant constantly absorb the heat in oil gas pipeline 7 and the cold-stored insulation can 13, the oil gas pipeline 7 by the reduced temperature and cold-stored insulation can 13 constantly condense the oil gas molecule, through such heat transfer mode, the recovery efficiency has been improved, reduce the oil gas molecule and discharge.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A refrigerating system for oil gas liquefaction processing comprises a refrigeration compressor (1) and an oil tank (16), and is characterized in that: the refrigeration system is characterized in that a first pipeline is connected to the upper portion of the right side of the refrigeration compressor (1), a second pipeline is connected to the middle of the left side of the refrigeration compressor, a condenser (2) is connected to the first pipeline, a condensing fan (3) is arranged above the condenser (2), an absorption and desorption system (17) is arranged above the condensing fan (3), a drying filter (4) is arranged outside the left side of the condenser (2) and extends to the first pipeline, a throttling device (5) is arranged above the left side of the drying filter (4), a refrigeration box (13) and an oil-gas pipeline (7) are connected to the left side of the throttling device (5), a refrigeration box (12) is arranged outside the oil-gas pipeline (7), the other end of the refrigeration pipeline (6) is connected with the oil-gas pipeline (7), the anti-explosion refrigeration system is characterized in that a refrigeration evaporator (8) and an anti-explosion electric heating device (10) are arranged inside the refrigeration heat preservation box (13), the refrigeration evaporator (8) is connected with the oil-gas pipeline (7), the other end of the refrigeration evaporator (8) is connected with the gas-liquid separator (9), the other end of the pipeline is connected with the gas-liquid separator (9), the bottom of the refrigeration heat preservation box (13) is connected with a water storage oil storage tank (14) through a pipeline, and the pipeline I is connected with a pressure controller (11) between the pipeline II.

2. The refrigeration system for oil and gas liquefaction process according to claim 1, characterized in that: the left side of the top of the oil gas pipeline (7) extends to the outside of the freezing insulation box (12) and is provided with an inlet pipe, the right side of the bottom of the oil gas pipeline (7) extends to the outside of the freezing insulation box (12) and is provided with an outlet pipe, the top of the inlet pipe is provided with a first oil gas pipeline communicated with the refrigerating insulation box (13), and the top of the outlet pipe is provided with a second oil gas pipeline connected with the absorption and desorption system (17).

3. The refrigeration system for oil and gas liquefaction process according to claim 1, characterized in that: the top of the absorption and desorption system (17) is provided with a discharge pipe, and a gas concentration meter (15) for detecting whether the concentration of the discharged gas reaches the standard is arranged on the discharge pipe.

4. The refrigeration system for oil and gas liquefaction process according to claim 2, characterized in that: one end of the refrigeration evaporator (8) extends to the outside of the refrigeration heat preservation box (13) and is connected with the gas-liquid separator (9), and the other end of the refrigeration evaporator (8) extends to the outside of the refrigeration heat preservation box (13) and is connected with the inlet pipe.

5. The refrigeration system for oil and gas liquefaction process according to claim 1, characterized in that: the left side of the top of the oil tank (16) is provided with an oil outlet pipe communicated with the cold storage insulation box (13), and the right side of the top of the oil tank (16) is provided with an oil return pipe communicated with the oil-gas pipeline (7).