CN106742890A - The safety monitoring system and its control method of a kind of device for recovering oil and gas - Google Patents
The safety monitoring system and its control method of a kind of device for recovering oil and gas Download PDFInfo
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- CN106742890A CN106742890A CN201710015892.6A CN201710015892A CN106742890A CN 106742890 A CN106742890 A CN 106742890A CN 201710015892 A CN201710015892 A CN 201710015892A CN 106742890 A CN106742890 A CN 106742890A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/22—Safety features
- B65D90/30—Recovery of escaped vapours
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0407—Constructional details of adsorbing systems
- B01D53/0423—Beds in columns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
- B01D53/0454—Controlling adsorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D90/00—Component parts, details or accessories for large containers
- B65D90/48—Arrangements of indicating or measuring devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D7/00—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes
- B67D7/04—Apparatus or devices for transferring liquids from bulk storage containers or reservoirs into vehicles or into portable containers, e.g. for retail sale purposes for transferring fuels, lubricants or mixed fuels and lubricants
- B67D7/0476—Vapour recovery systems
- B67D7/0478—Vapour recovery systems constructional features or components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/402—Further details for adsorption processes and devices using two beds
Abstract
The present invention relates to a kind of safety monitoring system of device for recovering oil and gas.The safety monitoring system of device for recovering oil and gas, including controller, monitoring device, fire-fighting pipeline, the air accumulator of emergency deflation pipeline and the inert gas that is stored with, the first valve is provided with fire-fighting pipeline, the second valve is provided with emergency deflation pipeline, controller respectively with monitoring device, first valve and the second valve are connected, monitoring device includes pressure monitoring component, one or more component in level monitoring component and temperature monitoring elements, status signals in the first adsorption tower monitored and the second adsorption tower can be fed back to controller by monitoring device, controller controls the break-make of the first valve and the second valve and then ensures the trouble free service of device for recovering oil and gas.The blast for effectively preventing sorbent combustion in adsorption tower from causing of the invention, improves the safety in utilization of device for recovering oil and gas.Ensure that the normal of adsorption tower is used simultaneously.
Description
Technical field
The invention belongs to security monitoring field, and in particular to a kind of safety monitoring system of device for recovering oil and gas and its control
Method.
Background technology
At present, it is necessary to be reclaimed to the oil gas of volatilization, recovery oil storage and transportation, handling in oil storage and transportation, handling operation
The oil gas volatilized in operation not only can effectively prevent that fire or blast occur because gas concentration is too high, and the oil of volatilization can be made again
Gas is turned waste into wealth, is recycled.
Petroleum vapor recovery technique has absorption method, absorption process, condensation method etc..Wherein, absorption method is because that can reach treatment higher
Efficiency, using more in big-and-middle-sized oil depot.Vapor Recovery Equipment with Adsorption is a kind of using adsorbent absorption oil gas and air
Oil gas in gaseous mixture, realizes the separation of oil gas and air.It is mainly run in oil storage and transportation, handling operation, by what is volatilized
Oil gas collection gets up.It is mainly comprising the dynamic power machine of a set of extraction vaporizing oil-gas（Compressor, vavuum pump etc.）, at least two dresses
It is filled with the adsorption tower of adsorbent, a set of programme controlled automatic switchover valve and measuring instrument and annex.Returned in absorption method oil gas
In receiving apparatus actual motion, due to the difference of the temperature, pressure and site operation personnel's technical quality of vaporizing oil-gas, cause to inhale
The situation that attached method device for recovering oil and gas runs under high temperature, high pressure operating mode happens occasionally, when in adsorption tower tower hydrocarbon content it is larger,
Temperature is too high in the tower being easily caused when tower pressure interior force is too high, sorbent combustion sets off an explosion in tower, so as to cause absorption method oil
There is the security incident caught fire or even explode in gas recovering device.
The content of the invention
The technical problem to be solved in the present invention is to provide one kind and can effectively prevent device for recovering oil and gas because in adsorption tower tower
Temperature is too high in tower, sorbent combustion sets off an explosion in tower situation occurs caused by hydrocarbon content is larger, tower pressure interior force is too high
Retracting device safety monitoring system.
In order to solve the above-mentioned technical problem, a kind of technical scheme of present invention use is：A kind of peace of device for recovering oil and gas
Full monitoring system, is arranged in device for recovering oil and gas, and the device for recovering oil and gas includes being capable of the first suction of alternating sorbent oil gas
Attached tower and the second adsorption tower connected with the first adsorption column outlet with the first exhaust pipeline of the first adsorption tower inlet communication
The second purging that one scavenging pipeline is connected with the second exhaust pipeline of the second adsorption tower inlet communication and with the second adsorption column outlet
Pipeline,
The safety monitoring system includes that the controller of each pipeline break-make in device for recovering oil and gas can be controlled, is arranged on the first suction
The monitoring device of situation in the first adsorption tower and the second adsorption tower, fire-fighting pipeline, tight can be monitored on attached tower and the second adsorption tower
The air accumulator of anxious blowdown piping and the inert gas that is stored with, described fire-fighting pipeline one end is connected with air accumulator, other end difference
Access in the first scavenging pipeline and the second scavenging pipeline, described emergency deflation pipeline one end is respectively connected to first exhaust pipeline and
Two gas exhaust pipings, the other end and ft connection, are provided with the first valve of break-make in the fire-fighting pipeline, described promptly to put
Be provided with the second valve of break-make in air pipe, the controller respectively with monitoring device, the first valve and the second valve
Connection, the monitoring device includes one or more group in pressure monitoring component, level monitoring component and temperature monitoring elements
Part, the pressure monitoring component is used to monitor the air pressure in the first adsorption tower and the second adsorption tower, and the level monitoring component is used
In the liquid level of the fluid for monitoring the accumulation in the first adsorption tower and the second adsorption tower, the temperature monitoring elements are used to monitor first
Temperature in adsorption tower and the second adsorption tower, the monitoring device can be by situation in the first adsorption tower monitored and the second adsorption tower
Signal feeds back to controller, and the controller can join according to the signal data of the feedback of monitoring device with the safety index of setting
Number contrast simultaneously controls the break-make of the first valve and the second valve and then ensures the trouble free service of device for recovering oil and gas.
Specifically, the pressure monitoring component includes the first pressure sensor set in the first adsorption tower and is arranged on the
Second pressure sensor in two adsorption towers, the first pressure sensor can detect the air pressure in the first adsorption tower, described
Second pressure sensor can detect the air pressure in the second adsorption tower, and safe pressure index parameter is set with the controller,
When the atmospheric pressure value of one or two detection in first pressure sensor and second pressure sensor is joined more than safe pressure index
Number, the controller judges correspondence adsorption tower Indexes Abnormality, the controller control the second valve open make the first adsorption tower and
The adsorption tower and turned on outside of Indexes Abnormality in second adsorption tower, oil gas are exported, and the controller controls the first valve to open,
Inert gas in air accumulator is set to import in adsorption tower in the first adsorption tower and the second adsorption tower in the adsorption tower of Indexes Abnormality
Absorption bed body and air exclusion.
Specifically, the level monitoring component includes setting the first liquid level sensor of bottom and setting in the first adsorption tower
The second liquid level sensor of bottom in the second adsorption tower, first liquid level sensor can be detected and take the first adsorption tower inner product
The liquid level of poly- fluid, second liquid level sensor can detect the liquid level of the fluid of accumulation in the second adsorption tower, the control
Safety levels index parameter is set with device processed, when one or two inspection in the first liquid level sensor and the second liquid level sensor
The level value of survey exceedes safety levels index parameter, and the controller judges correspondence adsorption tower Indexes Abnormality, the controller control
Making the second valve and opening is led the adsorption tower and turned on outside of Indexes Abnormality in the first adsorption tower and the second adsorption tower, oil gas
Go out, the controller controls the first valve to open, the inert gas in air accumulator is imported the first adsorption tower and the second adsorption tower
By the absorption bed body and air exclusion in adsorption tower in the adsorption tower of middle Indexes Abnormality.
Specifically, the temperature monitoring elements include the first temperature sensor set in the first adsorption tower and are arranged on the
Second temperature sensor in two adsorption towers, first temperature sensor can detect the temperature taken in the first adsorption tower, institute
The temperature that second temperature sensor can be detected in the second adsorption tower is stated, safe temperature index ginseng is set with the controller
Number, when the temperature value of one or two detection in the first temperature sensor and second temperature sensor exceedes safe temperature index
Parameter, the controller judges correspondence adsorption tower Indexes Abnormality, and the controller controls the second valve to open makes the first adsorption tower
With the adsorption tower and turned on outside of Indexes Abnormality in the second adsorption tower, oil gas is exported, and the controller controls the first valve to beat
Open, inert gas in air accumulator is imported adsorption tower in the first adsorption tower and the second adsorption tower in the adsorption tower of Indexes Abnormality
In absorption bed body and air exclusion.
Further, first temperature sensor have three and set up separately the top in the first adsorption tower, middle part and
Bottom, three the first temperature sensors can respectively detect the temperature of the upper, middle and lower of absorption bed body in the first adsorption tower
Degree；The second temperature sensor has three and sets up the upper, middle and lower in the second adsorption tower separately, three second temperature
Degree sensor can respectively detect the temperature of the upper, middle and lower of absorption bed body in the second adsorption tower.
Preferably, the inert gas of the air accumulator memory storage is nitrogen.
Preferably, first valve and the second valve are motor-operated control valve.
Further, the device for recovering oil and gas also include with the first air inlet pipeline of the first adsorption tower inlet communication and
First outlet pipe of the first adsorption column outlet connection and the second air inlet pipeline of the second adsorption tower inlet communication and second are inhaled
Second outlet pipe of attached tower outlet, the first air delivering pipeline, the second air delivering pipeline and recovery pipe, first air inlet pipe
Road and the second air inlet pipeline are connected with the first air delivering pipeline respectively, and first scavenging pipeline and the second scavenging pipeline are respectively with
Two air delivering pipelines are connected, first outlet pipe and the second outlet pipe respectively with atmosphere, the recovery pipe difference
It is connected with first exhaust pipeline and second exhaust pipeline,
Compressor is provided with first air delivering pipeline, the compressor can be imported in the first air delivering pipeline oil gas, institute
State the second air delivering pipeline to be connected with air-source and be provided with the 9th motor-operated control valve on the second air delivering pipeline, in the recovery pipe
End is provided with vavuum pump, and the fluid reclaimed in the first adsorption tower/the second adsorption tower can be extracted out and make the by the vavuum pump
The parsing of one adsorption tower/the second adsorption tower recovers,
First air inlet pipeline, the second air inlet pipeline, first exhaust pipeline, second exhaust pipeline, the first outlet pipe, second
The first motor-operated control valve to the 8th motor-operated control valve is disposed with outlet pipe, the first scavenging pipeline, the second scavenging pipeline,
The controller is connected with the first motor-operated control valve to the 9th motor-operated control valve, compressor and vavuum pump respectively.
A kind of control method of the safety monitoring system of device for recovering oil and gas, for the safety of above-mentioned device for recovering oil and gas
Monitoring system carries out operational control, and the control method comprises the following steps：
1）Start monitoring device, monitoring device carries out monitor in real time to the situation in the first adsorption tower and the second adsorption tower and feeds back
Monitoring Data is to controller；
2）Monitoring Data control compressor that controller is fed back according to monitoring device, vavuum pump, the first valve, the second valve and
The operation of the first motor-operated control valve to the 9th motor-operated control valve,
2A）When status index is abnormal in Monitoring Data represents the first adsorption tower tower：
2A-1）Controller controls compressor and vavuum pump to shut down, and the first valve and the second valve are opened, and the 9th motor-operated control valve is closed
Close, the 3rd motor-operated control valve is opened, the first motor-operated control valve, the second motor-operated control valve and the 4th motor-operated control valve to the 8th electricity
Dynamic control valve is turned off, and the oil gas in the first adsorption tower is discharged from urgent blowdown piping, and air pressure declines in the first adsorption tower；
2A-2）When air pressure is down to atmospheric pressure in the first adsorption tower, controller controls the second valve closing, the 7th Electronic control
Valve is opened, and the inert gas in air accumulator is filled with the first adsorption tower discharges the first adsorption tower, and then the first adsorption tower by air
Tower in space and air exclusion；
2B）When status index is abnormal in Monitoring Data represents the second adsorption tower tower：
2B-1）Controller controls compressor and vavuum pump to shut down, and the first valve and the second valve are opened, and the 9th motor-operated control valve is closed
Close, the 4th motor-operated control valve is opened, the first motor-operated control valve to the 3rd motor-operated control valve and the 5th motor-operated control valve to the 8th
Motor-operated control valve is turned off, and the oil gas in the second adsorption tower is discharged from urgent blowdown piping, and air pressure declines in the second adsorption tower；
2B-2）When air pressure is down to atmospheric pressure in the second adsorption tower, controller controls the second valve closing, the 8th Electronic control
Valve is opened, and the inert gas in air accumulator is filled with the second adsorption tower discharges the second adsorption tower, and then the second adsorption tower by air
Tower in space and air exclusion.
It is referred to above to the safety monitoring system all around gone up the inferior noun of locality, be in the device for recovering oil and gas
Normal orientation when using make what is defined.
The scope of the present invention, however it is not limited to the technical scheme of the particular combination of above-mentioned technical characteristic, while should also contain
Other technical schemes that lid is combined and is formed by above-mentioned technical characteristic or its equivalent feature.Such as features described above and sheet
Disclosed in application（But it is not limited to）Technical scheme that technical characteristic with similar functions is replaced mutually and formed etc..
Because above-mentioned technical proposal is used, the present invention has following advantages compared with prior art：Using monitoring device pair
Situation in first adsorption tower/the second adsorption tower carries out real-time monitoring, when the first adsorption tower/the second adsorption tower situation is abnormal,
The oil gas in the first adsorption tower/the second adsorption tower is released away by emergency deflation pipeline, adsorbs the first adsorption tower/the second
Air pressure in tower declines, and the inert gas in air accumulator is imported into energy in the first adsorption tower/the second adsorption tower by fire-fighting pipeline
Enough air discharges by the first adsorption tower/the second adsorption tower, and make the adsorbent bed and air insulated in tower, and then can reduce
Air pressure and temperature in tower, effectively prevent from being led because hydrocarbon content is larger, tower pressure interior force is too high in the first adsorption tower/the second adsorption tower
The blast that sorbent combustion causes in the tower of cause, improves the safety in utilization of device for recovering oil and gas.The present invention can prevent simultaneously
Only adsorption tower tower inner fluid accumulation excessively makes adsorbent fail, and has ensured that the normal of adsorption tower is used.
Brief description of the drawings
Fig. 1 is the schematic diagram of the safety monitoring system of device for recovering oil and gas of the present invention；
Fig. 2 is the workflow diagram of the safety monitoring system of device for recovering oil and gas of the present invention；
Wherein：1st, fire-fighting pipeline；2nd, emergency deflation pipeline；3rd, controller；4th, air accumulator；5th, compressor；6th, vavuum pump；7th, first
Air delivering pipeline；8th, the second air delivering pipeline；9th, recovery pipe；10th, the first air inlet pipeline；11st, the first valve；20th, the second air inlet pipe
Road；21st, the second valve；30th, first exhaust pipeline；40th, second exhaust pipeline；50th, the first outlet pipe；60th, the second escaping pipe
Road；70th, the first scavenging pipeline；80th, the second scavenging pipeline；100th, the first adsorption tower；101st, the first motor-operated control valve；102nd, second
Motor-operated control valve；103rd, the 3rd motor-operated control valve；104th, the 4th motor-operated control valve；105th, the 5th motor-operated control valve；106th, the 6th
Motor-operated control valve；107th, the 7th motor-operated control valve；108th, the 8th motor-operated control valve；109th, the 9th motor-operated control valve；200th, second
Adsorption tower；
BP1, first pressure sensor；BP2, second pressure sensor；BL1, the first liquid level sensor；BL2, the second level sensing
Device；BT1, the first temperature sensor；BT2, second temperature sensor.
Specific embodiment
As depicted in figs. 1 and 2, a kind of safety monitoring system of device for recovering oil and gas of the present invention, is arranged on oil gas
In retracting device.The device for recovering oil and gas includes being capable of first adsorption tower 100 and the second adsorption tower of alternating sorbent oil gas
200th, respectively with the inlet communication of the first adsorption tower 100 the first air inlet pipeline 10 and first exhaust pipeline 30, inhale with first respectively
First outlet pipe 50 and the first scavenging pipeline 70 of the outlet of attached tower 100, respectively with the inlet communication of the second adsorption tower 200
Second air inlet pipeline 20 and second exhaust pipeline 40, respectively with the second outlet pipe 60 of the outlet of the second adsorption tower 200 and
Second scavenging pipeline 80, the first air delivering pipeline 7, the second air delivering pipeline 8 and recovery pipe 9.
The air inlet pipeline 20 of first air inlet pipeline 10 and second is connected with the first air delivering pipeline 7 respectively.Described first blows
The scavenging pipeline 80 of pipeline 70 and second is swept to be connected with the second air delivering pipeline 8 respectively., the outlet of first outlet pipe 50 and second
Pipeline 60 respectively with atmosphere.The recovery pipe 9 is connected with first exhaust pipeline 30 and second exhaust pipeline 40 respectively.
Compressor 5 is provided with first air delivering pipeline 7, oil gas can be imported the first appendix by the compressor 5
In road 7.Second air delivering pipeline 8 is connected with air-source and is provided with the 9th motor-operated control valve 109 on the second air delivering pipeline 8.
End is provided with vavuum pump 6 in the recovery pipe 9, and the vavuum pump 6 can be by the adsorption tower 200 of the first adsorption tower 100/ second
The fluid of interior recovery is extracted out and parses the first 100/ second adsorption tower of adsorption tower 200 and recovers.
First air inlet pipeline 10, the second air inlet pipeline 20, first exhaust pipeline 30, second exhaust pipeline 40, first
The first electronic control is disposed with outlet pipe 50, the second outlet pipe 60, the first scavenging pipeline 70, the second scavenging pipeline 80
The motor-operated control valve 108 of valve processed 101 to the 8th.
The safety monitoring system includes that the controller 3 of each pipeline break-make in device for recovering oil and gas can be controlled, is arranged on
The prison of situation in the first adsorption tower 100 and the second adsorption tower 200 can be monitored on first adsorption tower 100 and the second adsorption tower 200
Survey the air accumulator 4 of device, fire-fighting pipeline 1, emergency deflation pipeline 2 and the inert gas that is stored with.In the present embodiment, the gas storage
The inert gas of the memory storage of tank 4 is nitrogen.
The one end of the fire-fighting pipeline 1 is connected with air accumulator 4, and the other end is respectively connected to the first scavenging pipeline 70 and the second purging
In pipeline 80.Described one end of emergency deflation pipeline 2 is respectively connected to first exhaust pipeline 30 and second exhaust pipeline 40, the other end with
Ft connection.The first valve 11 of break-make is provided with the fire-fighting pipeline 1.It is provided with the emergency deflation pipeline 2
It is capable of the second valve 21 of break-make.The valve 21 of first valve 11 and second is motor-operated control valve.
The monitoring device includes one or more in pressure monitoring component, level monitoring component and temperature monitoring elements
Component.The pressure monitoring component is used to monitor the air pressure in the first adsorption tower 100 and the second adsorption tower 200, the liquid level prison
Survey the liquid level of the fluid of the accumulation that component is used in the first adsorption tower 100 of monitoring and the second adsorption tower 200.The temperature monitoring group
Part is used to monitor temperature in the first adsorption tower 100 and the second adsorption tower 200.In the present embodiment, the monitoring device includes pressure
Monitoring assembly, three kinds of components of level monitoring component and temperature monitoring elements.
The pressure monitoring component includes the first pressure sensor BP1 set in the first adsorption tower 100 and is arranged on the
Second pressure sensor BP2 in two adsorption towers 200.The first pressure sensor BP1 can be detected in the first adsorption tower 100
Air pressure, the second pressure sensor BP2 can detect the air pressure in the second adsorption tower 200, is set with the controller 3
Safe pressure index parameter, when the atmospheric pressure value of any one detection in first pressure sensor BP1 and second pressure sensor BP2
More than safe pressure index parameter, show that the air pressure in correspondence adsorption tower is too high, the controller 3 judges correspondence adsorption tower index
It is abnormal.
The level monitoring component includes setting the first liquid level sensor BL1 of bottom and setting in the first adsorption tower 100
The second liquid level sensor BL2 of bottom in the second adsorption tower 200.The first liquid level sensor BL1 can be detected and be taken first
The liquid level of the fluid of accumulation in adsorption tower 100, the second liquid level sensor BL2 can detect accumulation in the second adsorption tower 200
Fluid liquid level, safety levels index parameter is set with the controller 3, when the first liquid level sensor BL1 and the second liquid
The level value of any one detection exceedes safety levels index parameter in level sensor BL2, shows the fluid product in correspondence adsorption tower
Poly- excessive, adsorbent adsorption effect is poor, and the controller 3 judges correspondence adsorption tower Indexes Abnormality.
The temperature monitoring elements include the first temperature sensor BT1 set in the first adsorption tower 100 and are arranged on the
Second temperature sensor BT2 in two adsorption towers 200.The first temperature sensor BT1 has three and sets up separately in the first suction
Upper, middle and lower in attached tower 100.Three the first temperature sensor BT1 can respectively be detected and inhaled in the first adsorption tower 100
The temperature of the upper, middle and lower of attached bed body.The second temperature sensor BT2 also has three and sets up separately in the second absorption
Upper, middle and lower in tower 200.Three second temperature sensor BT2 can respectively detect absorption in the second adsorption tower 200
The temperature of the upper, middle and lower of bed body.Safe temperature index parameter is set with the controller 3, when the first temperature is passed
The temperature value of any one detection exceedes safe temperature index parameter in sensor BT1 and second temperature sensor BT2, shows correspondence suction
Temperature in attached tower is too high, and the controller 3 judges correspondence adsorption tower Indexes Abnormality.
The controller 3 respectively with the motor-operated control valve 109 of the first motor-operated control valve 101 to the 9th, compressor 5, vavuum pump
6 and monitoring device, the first valve 11 and the second valve 21 connect.The first adsorption tower 100 that the monitoring device will can be monitored
Controller 3 is fed back to status signals in the second adsorption tower 200, the controller 3 can be according to the letter of the feedback of monitoring device
Number and the safety index parameter comparison of setting and the break-make of the first valve 11 of control and the second valve 21 and then guarantee oil gas
The trouble free service of retracting device.When an adsorption tower status index exception, institute in the first adsorption tower 100 and the second adsorption tower 200
State control the second valve 21 of controller 3 open make the adsorption tower of Indexes Abnormality in the first adsorption tower 100 and the second adsorption tower 200 with
Turned on outside, oil gas is exported, and the controller 3 controls the first valve 11 to open, and inert gas in air accumulator 4 is imported the
By the absorption bed body and air exclusion in adsorption tower in the adsorption tower of Indexes Abnormality in one adsorption tower 100 and the second adsorption tower 200.
It is specifically described below device for recovering oil and gas is grasped using the safety monitoring system of above-mentioned device for recovering oil and gas
The control method that work is controlled.The control method comprises the following steps：
1）Start monitoring device, monitoring device carries out monitor in real time to the situation in the first adsorption tower 100 and the second adsorption tower 200
And feedback monitoring data are to controller 3.Monitored respectively by pressure monitoring component, level monitoring component and temperature monitoring elements
Air pressure, fluid position and three kinds of indexs of temperature in first adsorption tower 100 and the second adsorption tower 200.Any of which index surpasses
Mark, the situation in correspondence adsorption tower is just exception；
2）Monitoring Data control compressor 5, vavuum pump 6, the first valve 11, the second valve that controller 3 feeds back according to monitoring device
The operation of door 21 and the motor-operated control valve 109 of the first motor-operated control valve 101 to the 9th,
2A）When status index is abnormal in Monitoring Data represents the tower of the first adsorption tower 100：
2A-1）Controller 3 controls compressor 5 and vavuum pump 6 to shut down, and the first valve 11 and the second valve 21 are opened, and the 9th is electronic
Control valve 109 is closed, and the 3rd motor-operated control valve 103 is opened, the first motor-operated control valve 101, the second motor-operated control valve 102 and the
The motor-operated control valve 108 of four motor-operated control valve 104 to the 8th is turned off, and the oil gas in the first adsorption tower 100 is from urgent blowdown piping 2
Discharge, air pressure declines in the first adsorption tower 100；
2A-2）When air pressure is down to atmospheric pressure in the first adsorption tower 100, controller 3 controls the second valve 21 to close, the 7th electricity
Dynamic control valve 107 is opened, and the inert gas in air accumulator 4 is filled with the first adsorption tower 100 and for air to discharge the first adsorption tower
Space and air exclusion in 100, and then the tower of the first adsorption tower 100.
2B）When status index is abnormal in Monitoring Data represents the tower of the second adsorption tower 200：
2B-1）Controller 3 controls compressor 5 and vavuum pump 6 to shut down, and the first valve 11 and the second valve 21 are opened, and the 9th is electronic
Control valve 109 close, the 4th motor-operated control valve 104 is opened, the motor-operated control valve 103 of the first motor-operated control valve 101 to the 3rd and
The motor-operated control valve 108 of 5th motor-operated control valve 105 to the 8th is turned off, and the oil gas in the second adsorption tower 200 is from urgent bleeder pipe
Road 2 is discharged, and air pressure declines in the second adsorption tower 200；
2B-2）When air pressure is down to atmospheric pressure in the second adsorption tower 200, controller 3 controls the second valve 21 to close, the 8th electricity
Dynamic control valve 108 is opened, and the inert gas in air accumulator 4 is filled with the second adsorption tower 200 and for air to discharge the second adsorption tower
Space and air exclusion in 200, and then the tower of the second adsorption tower 200.
It can be seen that, the present invention is carried out in real time using monitoring device to the situation in the adsorption tower 200 of the first adsorption tower 100/ second
Monitoring, when the situation of the first 100/ second adsorption tower of adsorption tower 200 is abnormal, by emergency deflation pipeline 2 by the first adsorption tower
Oil gas in 100/ second adsorption tower 200 is released away, the air pressure in the adsorption tower 200 of the first adsorption tower 100/ second is declined
Being imported the inert gas in air accumulator 4 by fire-fighting pipeline 2 can be by first in the adsorption tower 200 of first adsorption tower 100/ second
Air discharge in the adsorption tower 200 of adsorption tower 100/ second, and make the adsorbent bed and air insulated in tower, and then tower can be reduced
Interior air pressure and temperature, effectively prevent that the internal cause hydrocarbon content of the first 100/ second adsorption tower of adsorption tower 200 is larger, tower pressure interior force is too high
Caused by sorbent combustion causes in tower blast, improve the safety in utilization of device for recovering oil and gas.While energy of the present invention
Enough prevent adsorption tower tower inner fluid from gathering excessive and adsorbent is failed, ensured that the normal of adsorption tower is used.
As described above, we are illustrated fully according to spirit of the invention, but the present invention is not limited to above-mentioned reality
Apply example and implementation.The practitioner of correlative technology field can carry out different in the range of technological thought of the invention license
Change and implementation.
Claims (9)
1. a kind of safety monitoring system of device for recovering oil and gas, is arranged in device for recovering oil and gas, the device for recovering oil and gas bag
Include the first adsorption tower for being capable of alternating sorbent oil gas（100）With the second adsorption tower（200）With the first adsorption tower（100）Import connects
Logical first exhaust pipeline（30）With the first adsorption tower（100）First scavenging pipeline of outlet（70）With the second adsorption tower
（200）The second exhaust pipeline of inlet communication（40）And with the second adsorption tower（200）Second scavenging pipeline of outlet（80）,
It is characterized in that：The safety monitoring system includes controlling the controller of each pipeline break-make in device for recovering oil and gas
（3）, be arranged on the first adsorption tower（100）With the second adsorption tower（200）On can monitor the first adsorption tower（100）With the second absorption
Tower（200）The monitoring device of interior situation, fire-fighting pipeline（1）, emergency deflation pipeline（2）And the air accumulator of the inert gas that is stored with
（4）, the fire-fighting pipeline（1）One end and air accumulator（4）It is connected, the other end is respectively connected to the first scavenging pipeline（70）Blown with second
Sweep pipeline（80）In, the emergency deflation pipeline（2）One end is respectively connected to first exhaust pipeline（30）With second exhaust pipeline
（40）, the other end and ft connection, the fire-fighting pipeline（1）In be provided with the first valve of break-make（11）, it is described urgent
Blowdown piping（2）In be provided with the second valve of break-make（21）, the controller（3）Respectively with monitoring device, the first valve
Door（11）With the second valve（21）Connection, the monitoring device includes pressure monitoring component, level monitoring component and temperature monitoring
One or more component in component, the pressure monitoring component is used to monitor the first adsorption tower（100）With the second adsorption tower
（200）Interior air pressure, the level monitoring component is used to monitor the first adsorption tower（100）With the second adsorption tower（200）Interior product
The liquid level of poly- fluid, the temperature monitoring elements are used to monitor the first adsorption tower（100）With the second adsorption tower（200）Interior temperature
Degree, the first adsorption tower that the monitoring device will can be monitored（100）With the second adsorption tower（200）Interior status signals feed back to control
Device processed（3）, the controller（3）Can be according to the signal data of the feedback of monitoring device and the safety index parameter comparison for setting
And control the first valve（11）With the second valve（21）Break-make so that ensure device for recovering oil and gas trouble free service.
2. the safety monitoring system of a kind of device for recovering oil and gas according to claim 1, it is characterised in that：The pressure prison
Surveying component includes setting the first adsorption tower（100）Interior first pressure sensor（BP1）Be arranged on the second adsorption tower（200）It is interior
Second pressure sensor（BP2）, the first pressure sensor（BP1）The first adsorption tower can be detected（100）Interior air pressure,
The second pressure sensor（BP2）The second adsorption tower can be detected（200）Interior air pressure, the controller（3）Inside it is set with
Safe pressure index parameter, when first pressure sensor（BP1）With second pressure sensor（BP2）In one or two detection
Atmospheric pressure value exceed safe pressure index parameter, the controller（3）Judge correspondence adsorption tower Indexes Abnormality, the controller
（3）Control the second valve（21）Opening makes the first adsorption tower（100）With the second adsorption tower（200）The adsorption tower of middle Indexes Abnormality with
Turned on outside, oil gas is exported, the controller（3）Control the first valve（11）Open, make air accumulator（4）In inert gas
Import the first adsorption tower（100）With the second adsorption tower（200）By the absorption bed body in adsorption tower in the adsorption tower of middle Indexes Abnormality
With air exclusion.
3. the safety monitoring system of a kind of device for recovering oil and gas according to claim 1, it is characterised in that：The liquid level prison
Surveying component includes setting the first adsorption tower（100）First liquid level sensor of interior bottom（BL1）Be arranged on the second adsorption tower
（200）Second liquid level sensor of interior bottom（BL2）, first liquid level sensor（BL1）Can detect and take the first adsorption tower
（100）The liquid level of the fluid of interior accumulation, second liquid level sensor（BL2）The second adsorption tower can be detected（200）Interior accumulation
Fluid liquid level, the controller（3）Safety levels index parameter is inside set with, when the first liquid level sensor（BL1）With
Two liquid level sensors（BL2）In one or two detection level value exceed safety levels index parameter, the controller（3）
Judge correspondence adsorption tower Indexes Abnormality, the controller（3）Control the second valve（21）Opening makes the first adsorption tower（100）With
Two adsorption towers（200）The adsorption tower and turned on outside of middle Indexes Abnormality, oil gas are exported, the controller（3）Control the first valve
Door（11）Open, make air accumulator（4）In inert gas import the first adsorption tower（100）With the second adsorption tower（200）Middle index
By the absorption bed body and air exclusion in adsorption tower in abnormal adsorption tower.
4. the safety monitoring system of a kind of device for recovering oil and gas according to claim 1, it is characterised in that：The temperature prison
Surveying component includes setting the first adsorption tower（100）The first interior temperature sensor（BT1）Be arranged on the second adsorption tower（200）It is interior
Second temperature sensor（BT2）, first temperature sensor（BT1）Can detect and take the first adsorption tower（100）Interior temperature
Degree, the second temperature sensor（BT2）The second adsorption tower can be detected（200）Interior temperature, the controller（3）Interior setting
There is safe temperature index parameter, when the first temperature sensor（BT1）And second temperature sensor（BT2）In one or two inspection
The temperature value of survey exceedes safe temperature index parameter, the controller（3）Judge correspondence adsorption tower Indexes Abnormality, the controller
（3）Control the second valve（21）Opening makes the first adsorption tower（100）With the second adsorption tower（200）The adsorption tower of middle Indexes Abnormality with
Turned on outside, oil gas is exported, the controller（3）Control the first valve（11）Open, make air accumulator（4）In inert gas
Import the first adsorption tower（100）With the second adsorption tower（200）By the absorption bed body in adsorption tower in the adsorption tower of middle Indexes Abnormality
With air exclusion.
5. the safety monitoring system of a kind of device for recovering oil and gas according to claim 4, it is characterised in that：First temperature
Degree sensor（BT1）With three and set up separately in the first adsorption tower（100）Interior upper, middle and lower, three the first temperature
Sensor（BT1）The first adsorption tower can respectively be detected（100）The temperature of the upper, middle and lower of interior absorption bed body；It is described
Second temperature sensor（BT2）With three and set up separately in the second adsorption tower（200）Interior upper, middle and lower, three
Two temperature sensors（BT2）The second adsorption tower can respectively be detected（200）The temperature of the upper, middle and lower of interior absorption bed body
Degree.
6. the safety monitoring system of a kind of device for recovering oil and gas according to claim 1, it is characterised in that：The air accumulator
（4）The inert gas of memory storage is nitrogen.
7. the safety monitoring system of a kind of device for recovering oil and gas according to claim 1, it is characterised in that：First valve
Door（11）With the second valve（21）It is motor-operated control valve.
8. a kind of safety monitoring system of device for recovering oil and gas according to any one of claim 1 to 7, its feature exists
In：The device for recovering oil and gas also includes and the first adsorption tower（100）First air inlet pipeline of inlet communication（10）Inhaled with first
Attached tower（100）First outlet pipe of outlet（50）With the second adsorption tower（200）Second air inlet pipeline of inlet communication
（20）With the second adsorption tower（200）Second outlet pipe of outlet（60）, the first air delivering pipeline（7）, the second air delivering pipeline
（8）And recovery pipe（9）, first air inlet pipeline（10）With the second air inlet pipeline（20）Respectively with the first air delivering pipeline（7）
Connection, first scavenging pipeline（70）With the second scavenging pipeline（80）Respectively with the second air delivering pipeline（8）Connection, described first
Outlet pipe（50）With the second outlet pipe（60）Respectively with atmosphere, the recovery pipe（9）Respectively with downtake pipe
Road（30）With second exhaust pipeline（40）Connection,
First air delivering pipeline（7）On be provided with compressor（5）, the compressor（5）Oil gas can be imported the first gas transmission
Pipeline（7）In, second air delivering pipeline（8）It is connected with air-source and the second air delivering pipeline（8）On be provided with the 9th electronic control
Valve processed（109）, the recovery pipe（9）Upper end is provided with vavuum pump（6）, the vavuum pump（6）Can be by the first adsorption tower
（100）/ the second adsorption tower（200）The fluid of interior recovery is extracted out and makes the first adsorption tower（100）/ the second adsorption tower（200）Parsing
Recover,
First air inlet pipeline（10）, the second air inlet pipeline（20）, first exhaust pipeline（30）, second exhaust pipeline（40）、
First outlet pipe（50）, the second outlet pipe（60）, the first scavenging pipeline（70）, the second scavenging pipeline（80）On set gradually
There is the first motor-operated control valve（101）To the 8th motor-operated control valve（108）,
The controller（3）Respectively with the first motor-operated control valve（101）To the 9th motor-operated control valve（109）, compressor（5）And
Vavuum pump（6）Connection.
9. a kind of control method of the safety monitoring system of device for recovering oil and gas, it is characterised in that：For described in claim 8
A kind of safety monitoring system of device for recovering oil and gas carries out operational control, and the control method comprises the following steps：
Start monitoring device, monitoring device is to the first adsorption tower（100）With the second adsorption tower（200）Interior situation is supervised in real time
Control and feedback monitoring data are to controller（3）；
Controller（3）The Monitoring Data fed back according to monitoring device controls compressor（5）, vavuum pump（6）, the first valve（11）、
Second valve（21）And first motor-operated control valve（101）To the 9th motor-operated control valve（109）Operation,
2A）When Monitoring Data represents the first adsorption tower（100）When status index is abnormal in tower：
2A-1）Controller（3）Control compressor（5）And vavuum pump（6）Shut down, the first valve（11）With the second valve（21）Beat
Open, the 9th motor-operated control valve（109）Close, the 3rd motor-operated control valve（103）Open, the first motor-operated control valve（101）, second electricity
Dynamic control valve（102）And the 4th motor-operated control valve（104）To the 8th motor-operated control valve（108）It is turned off, the first adsorption tower
（100）Interior oil gas is from urgent blowdown piping（2）Discharge, the first adsorption tower（100）Interior air pressure declines；
2A-2）When the first adsorption tower（100）When interior air pressure is down to atmospheric pressure, controller（3）Control the second valve（21）Close,
7th motor-operated control valve（107）Open, air accumulator（4）In inert gas be filled with the first adsorption tower（100）It is interior to discharge air
First adsorption tower（100）, and then the first adsorption tower（100）Tower in space and air exclusion；
2B）When Monitoring Data represents the second adsorption tower（200）When status index is abnormal in tower：
2B-1）Controller（3）Control compressor（5）And vavuum pump（6）Shut down, the first valve（11）With the second valve（21）Beat
Open, the 9th motor-operated control valve（109）Close, the 4th motor-operated control valve（104）Open, the first motor-operated control valve（101）To the 3rd
Motor-operated control valve（103）And the 5th motor-operated control valve（105）To the 8th motor-operated control valve（108）It is turned off, the second adsorption tower
（200）Interior oil gas is from urgent blowdown piping（2）Discharge, the second adsorption tower（200）Interior air pressure declines；
2B-2）When the second adsorption tower（200）When interior air pressure is down to atmospheric pressure, controller（3）Control the second valve（21）Close,
8th motor-operated control valve（108）Open, air accumulator（4）In inert gas be filled with the second adsorption tower（200）It is interior to discharge air
Second adsorption tower（200）, and then the second adsorption tower（200）Tower in space and air exclusion.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110075774A (en) * | 2019-06-14 | 2019-08-02 | 长岭炼化岳阳工程设计有限公司 | Change products the MTBE device and its automatic control method of heat bodied oil with safety auto-controlled system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2628523A1 (en) * | 2012-02-14 | 2013-08-21 | Air Liquide Medical G.m.b.H. | Facility for on-site production of medical gas and associated supervision method |
| CN203893510U (en) * | 2014-06-06 | 2014-10-22 | 北京二商集团有限责任公司西郊食品冷冻厂 | Leakage monitoring and emergency system of ammonia refrigeration system |
| CN204534137U (en) * | 2015-02-05 | 2015-08-05 | 杭州新世纪混合气体有限公司 | A kind of medical oxygen evacuation system monitoring device |
| CN105807670A (en) * | 2016-05-10 | 2016-07-27 | 贵州电网有限责任公司电力科学研究院 | Zero-pollution pump-back device and operating method thereof |
| EP2181752B1 (en) * | 2008-11-03 | 2017-02-08 | Mil'S | Process for treatment of a fluid by pressure swing adsorption |
| CN206407422U (en) * | 2017-01-10 | 2017-08-15 | 苏州苏净保护气氛有限公司 | A kind of safety monitoring system of device for recovering oil and gas |
-
2017
- 2017-01-10 CN CN201710015892.6A patent/CN106742890B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2181752B1 (en) * | 2008-11-03 | 2017-02-08 | Mil'S | Process for treatment of a fluid by pressure swing adsorption |
| EP2628523A1 (en) * | 2012-02-14 | 2013-08-21 | Air Liquide Medical G.m.b.H. | Facility for on-site production of medical gas and associated supervision method |
| CN203893510U (en) * | 2014-06-06 | 2014-10-22 | 北京二商集团有限责任公司西郊食品冷冻厂 | Leakage monitoring and emergency system of ammonia refrigeration system |
| CN204534137U (en) * | 2015-02-05 | 2015-08-05 | 杭州新世纪混合气体有限公司 | A kind of medical oxygen evacuation system monitoring device |
| CN105807670A (en) * | 2016-05-10 | 2016-07-27 | 贵州电网有限责任公司电力科学研究院 | Zero-pollution pump-back device and operating method thereof |
| CN206407422U (en) * | 2017-01-10 | 2017-08-15 | 苏州苏净保护气氛有限公司 | A kind of safety monitoring system of device for recovering oil and gas |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110075774A (en) * | 2019-06-14 | 2019-08-02 | 长岭炼化岳阳工程设计有限公司 | Change products the MTBE device and its automatic control method of heat bodied oil with safety auto-controlled system |
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