CN111591610A - VOCs zero-emission storage system and method for organic material storage tank - Google Patents
VOCs zero-emission storage system and method for organic material storage tank Download PDFInfo
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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
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Abstract
The invention relates to a VOCs zero-emission storage system of an organic material storage tank, which comprises N storage tanks, a dry gas cabinet, a pressure balance main pipe, N pressure balance branch pipes and a purification and recovery device, wherein the N storage tanks are connected with the dry gas cabinet; the storage tanks are provided with a feed inlet, a discharge outlet and an exhaust port, the N storage tanks are respectively connected with one end of a pressure balance main pipe through pressure balance branch pipes, and the other end of the pressure balance main pipe is connected with a dry-type gas cabinet; the dry gas holder is provided with a pressure balance pipe interface, a circulating gas inlet and a recovered gas outlet; the purification and recovery device comprises adsorption equipment and a condensation heat exchanger. The invention is connected with the storage tank by arranging the dry type gas holder, and the dry type gas holder is used for buffering the pressure intensity increase caused by volatile gas of volatile oil, thereby greatly reducing the storage danger, having low storage cost, simple and convenient maintenance, and safe, reliable and lasting operation.
Description
Technical Field
The invention relates to the technical field of organic material storage equipment, in particular to a zero-emission storage system and method for VOCs (volatile organic compounds) in an organic material storage tank.
Background
Volatile oils such as benzene, alcohol, wash oil all have stronger volatility, because volatility leads to inside atmospheric pressure increase when storing to the bearing performance requirement to storage facilities is higher, the cost of storage has greatly increased, and the higher pressure of inside leads to storage facilities very easily to break simultaneously, has stronger potential safety hazard, and the oily gas after the volatility has flammability and stronger toxicity, in case reveal cause pollution and the explosive accident to the environment easily.
Disclosure of Invention
The invention aims to solve the defects of the technical problems and provides a zero-emission storage system and a zero-emission storage method for VOCs in an organic material storage tank.
In order to solve the technical problems, the invention adopts the technical scheme that: a zero-emission storage system for VOCs (volatile organic compounds) in an organic material storage tank comprises N storage tanks, a dry gas cabinet, a pressure balance main pipe, N pressure balance branch pipes and a purification and recovery device;
the storage tanks are provided with a feed inlet, a discharge outlet and an exhaust port, the N storage tanks are respectively connected with one end of a pressure balance main pipe through pressure balance branch pipes, and the other end of the pressure balance main pipe is connected with a dry-type gas cabinet;
the dry gas holder is provided with a pressure balance pipe interface, a circulating gas inlet and a recovered gas outlet;
purify recovery unit and include adsorption equipment and condensation heat exchanger, adsorption equipment has absorption passageway and desorption passageway, it has the adsorbent to all fill in absorption passageway and the desorption passageway, the import of absorption passageway is passed through the recovery gas export of pipe connection to dry-type gas cabinet, the export of absorption passageway passes through the branching unit and connects three routes pipeline, the pipeline of the first way is through the inlet connection of condensation heat exchanger with the desorption passageway, the second way pipeline is connected to the circulation gas import of dry-type gas cabinet, the third route pipeline is connected to the inlet connection of desorption passageway.
As a further optimization of the organic material storage tank VOCs zero-emission storage system of the invention: a liquid level meter for displaying the liquid level of the storage tank is arranged in the storage tank.
As a further optimization of the organic material storage tank VOCs zero-emission storage system of the invention: the dry gas holder has a high level restriction and a pressure relief valve.
As a further optimization of the organic material storage tank VOCs zero-emission storage system of the invention: and the pipeline between the dry gas cabinet and the adsorption equipment and the three pipelines at the outlet of the adsorption channel are provided with induced draft fans.
As a further optimization of the organic material storage tank VOCs zero-emission storage system of the invention: the adsorption equipment comprises a shell and an adsorption inner core arranged in the shell, the adsorption inner core is rotatably arranged in the shell through a rotating shaft, the rotating shaft is arranged along the axial direction of the shell, two end faces of the shell are respectively provided with an adsorption gas inlet and a desorption gas inlet, the adsorption inner core is provided with a central channel, the central channel is divided into two chambers by a middle partition plate, adsorbents are filled in the two chambers, two ends of the adsorption inner core are respectively provided with a sealing head, a gap is formed between the sealing head and the end face of the shell, the sealing heads are respectively provided with a through hole corresponding to the two chambers, the inner sides of the two adsorption gas inlets and the two desorption gas inlets of the shell are respectively provided with a vent pipe, the vent pipe consists of an outer pipe and an inner pipe penetrating through the outer pipe, one end of the inner pipe extending into the outer pipe is provided with a spring, the bottom of the spring is, the inner side of the end socket through hole of the adsorption inner core is provided with a guide cylinder, the guide cylinder is of a horn-shaped structure, the large-diameter end of the guide cylinder is in butt joint with the through hole of the end socket, and the diameter of the small-diameter end of the guide cylinder is larger than that of the inner pipe.
As a further optimization of the organic material storage tank VOCs zero-emission storage system of the invention: the intermediate partition board is made of heat insulating materials.
A zero-emission storage method for VOCs in an organic material storage tank comprises the following steps:
s1, sealing connection: connecting the storage tank with a pressure balance main pipe through a pressure balance branch pipe, and then connecting the pressure balance main pipe with a dry type gas cabinet;
s2, initial phase setting: setting a constant pressure value of the dry type gas holder according to the storage capacity of the storage tank, wherein when the storage tank is in a full-empty state, the internal pressure of the storage tank communicated with the dry type gas holder is at the lowest position, namely the initial position, and the gauge pressure in the dry type gas holder is zero at the moment;
s3, gas protection: before the storage tank enters the materials, the circulating gas exhaust system is adopted to replace the air in the storage tank, so that the inner cavity of the storage tank is completely filled with the circulating gas, the inner cavity of the tank body forms an oxygen-free environment, and the air pressure of the inner cavity of the dry-type gas holder is kept to be an initial value in the replacement process, namely the gauge pressure is zero;
s4, constant-pressure feeding: the feeding is realized through a feeding hole of the storage tank, when the storage tank feeds materials gradually, the pressure of the inner cavities of the storage tank and the dry-type gas holder rises, when the pressure reaches the constant pressure of the dry-type gas holder, the dry-type gas holder starts to rise automatically, the dry-type gas holder rises synchronously along with the increase of the material entering amount in the storage tank, and in the rising process, the pressure of the inner cavities of the storage tank and the dry-type gas holder is always kept in a set constant pressure state;
s5, storage and volatilization: when all storage tanks reach the maximum storage capacity, the dry gas holder rises to the highest position at the moment, the internal pressure of the dry gas holder is still in a specified constant pressure, and oil substances in the storage tanks volatilize harmful gases, so that mixed gas in the system is a mixture of volatile organic material gas phase and circulating gas;
s6, volatile recovery: continuously charging circulating gas into the dry gas holder at regular time, simultaneously pumping the mixture in the dry gas holder to an adsorption device, keeping the internal pressure of the dry gas holder at a specified constant pressure, purifying the mixture by the adsorption device to be used as the circulating gas to enter the dry gas holder, and stopping continuously charging the circulating gas into the dry gas holder when the concentration of volatile matters in the mixture pumped out of the dry gas holder is reduced to a threshold value;
s7, constant-pressure discharging: when the storage tank discharges materials through the discharge hole, the internal pressure of the inner cavity of the dry type gas cabinet communicated with the storage tank is reduced, the height of the dry type gas cabinet is synchronously reduced at the moment, so that a constant pressure state is kept, when the discharge value of the storage tank is reduced to be lower than the constant value of the dry type gas cabinet, the internal pressure of the dry type gas cabinet is gradually reduced, and the dry type gas cabinet falls back to the initial lowest position state until all the storage tanks are emptied.
The zero-emission storage system and method for VOCs in the organic material storage tank have the following beneficial effects:
1. according to the invention, the dry-type gas cabinet is connected with the storage tank, and the dry-type gas cabinet is used for buffering the pressure increase caused by volatile gas of volatile oil, so that the storage danger is greatly reduced, the storage cost is low, the maintenance is simple and convenient, and the operation is safe, reliable and lasting; 2. the sealed storage inner cavity is arranged, so that no volatile material gas phase is discharged into the atmosphere in the whole storage process, and the storage inner cavity has no oxygen, so that the system is safe and reliable all the time, and the volatile gas is thoroughly treated by matching with a gas system;
3. the invention recovers VOCs volatilized by the storage tank, realizes the maximum utilization of energy in the recovery process, and on one hand, the adsorbed clean tail gas can be used as desorption gas to desorb the fully loaded adsorbent after being heated by the condensing heat exchanger, on the other hand, the tail gas can also be used as circulating gas to be supplemented into a dry type gas holder, and can also be conveyed to a desorption channel without being heated to cool the desorption channel, so that the tail gas can be converted into an adsorption channel to be adsorbed.
Drawings
FIG. 1 is a schematic structural view of a storage system according to embodiment 1;
FIG. 2 is a schematic view of the structure of an adsorption apparatus according to example 1;
FIG. 3 is a schematic diagram showing a positional relationship between a housing and an adsorption core in the adsorption apparatus according to embodiment 1;
FIG. 4 is a schematic structural view of a head in the adsorption apparatus of example 1;
the labels in the figure are: 1. the device comprises a storage tank, 2 parts of a dry gas cabinet, 3 parts of a pressure balance main pipe, 4 parts of a pressure balance branch pipe, 5 parts of an adsorption device, 6 parts of a condensation heat exchanger, 5-1 parts of a shell, 5-2 parts of an adsorption inner core, 5-3 parts of a middle partition plate, 5-4 parts of an end enclosure, 5-5 parts of an outer pipe, 5-6 parts of an inner pipe, 5-7 parts of a guide cylinder.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
The technical solution of the present invention is further described below with reference to specific embodiments.
Example 1
The utility model provides an organic material storage tank VOCs zero release storage system, includes N storage tank 1, dry-type gas holder 2, pressure balance house steward 3, N pressure balance branch pipe 4 and purifies recovery unit. The dry gas holder 2 has a high-level restriction device and a pressure relief valve. A liquid level meter used for displaying the liquid level of the storage tank is arranged in the storage tank 1, the storage tank 1 is provided with a feeding hole, a discharging hole and an exhaust hole, the N storage tanks 1 are respectively connected with one end of a pressure balance header pipe 3 through pressure balance branch pipes 4, and the other end of the pressure balance header pipe 3 is connected with a dry type gas holder 2. The dry gas holder 2 has a pressure balance pipe interface, a recycle gas inlet and a recycle gas outlet. The connecting pipe of the circulating gas inlet can be externally connected with a nitrogen supplementing pipe.
Purify recovery unit and include adsorption equipment 5 and condensation heat exchanger 6, adsorption equipment 5 has adsorption channel and desorption passageway, it has the adsorbent to all fill in adsorption channel and the desorption passageway, the import of adsorption channel is passed through the recovery gas export of pipe connection to dry-type gas holder 2, the export of adsorption channel passes through the branching unit and connects three routes pipeline, first pipeline is through condensation heat exchanger 6 and desorption passageway's access connection, second pipeline is connected to the circulation gas inlet of dry-type gas holder 2, third pipeline is connected to the access connection of desorption passageway. And the pipeline between the dry gas holder 2 and the adsorption equipment 5 and the three pipelines at the outlet of the adsorption channel are provided with induced draft fans.
The mixture gas with VOCs discharged from the dry gas holder 2 enters the adsorption equipment 5, volatile matters in the mixture gas are adsorbed by the adsorption equipment 5, clean tail gas discharged by the adsorption equipment 5 is divided into three paths, one path of clean tail gas circulates into the dry gas holder 2 through a pipeline, the other path of clean tail gas enters the desorption channel of the adsorption equipment 5 after being heated by the condensing heat exchanger 6, the adsorbent is subjected to temperature rise and desorption, the desorbed gas is cooled by the condensing heat exchanger 6 to be recovered, and the last path of clean tail gas circulates to the desorption channel of the adsorption equipment 5 through the pipeline and is used for cooling the desorption channel which is subjected to temperature rise and desorption.
The adsorption equipment 5 comprises a shell 5-1 and an adsorption inner core 5-2 arranged in the shell 5-1, wherein the adsorption inner core 5-2 is rotatably arranged in the shell 5-1 through a rotating shaft, the rotating shaft is arranged along the axial direction of the shell 5-1, an adsorption gas inlet and a desorption gas inlet are arranged on two end faces of the shell 5-1, the adsorption inner core 5-2 is provided with a central channel, the central channel is divided into two chambers by a middle partition plate 5-3, and the middle partition plate 5-3 is made of a heat insulation material. The two cavities are filled with adsorbent, the two ends of the adsorption inner core 5-2 are respectively provided with a seal head 5-4, a gap is arranged between the seal head 5-4 and the end face of the shell 5-1, the seal head 5-4 is respectively provided with a through hole corresponding to the two cavities, the inner sides of the two adsorption gas inlets and the two desorption gas inlets of the shell 5-1 are respectively provided with a vent pipe, the vent pipe consists of an outer tube 5-5 and an inner tube 5-6 penetrating in the outer tube 5-5, one end of the inner tube 5-6 extending into the outer tube 5-5 is provided with a spring, the bottom of the spring is fixedly connected with the outer tube 5-5, the top of the spring is fixedly connected with the outer tube 5-5, one end of the inner tube 5-6 extending out of the outer tube 5-5 is arranged in the cavity of the adsorption inner core 5-2, the inner sides, the guide cylinder 5-7 is in a horn-shaped structure, the large-diameter end of the guide cylinder 5-7 is in butt joint with the through hole of the seal head 5-4, and the diameter of the small-diameter end of the guide cylinder 5-7 is larger than that of the inner tube 5-6.
In the rotation process of the absorption inner core 5-2, the inner tube 5-6 is slowly extruded into the outer tube 5-5 under the action of the inclined plane of the guide cylinder 5-7, when the absorption inner core is 5-2 half of the circumference, the inner tube 5-6 slides into the through hole along the inclined plane of the other guide cylinder 5-7, and at the moment, the inner tube extends out of the outer tube 5-5 under the action of the spring and is placed in the chamber. With the 5-2 rotation adjustment of the adsorption inner core, the vent pipe can always keep the inlet of the shell 5-1 to be in sealed communication with the corresponding cavity.
The adsorption equipment of this embodiment has two passageways, all packs in two passageways and has the adsorbent, and when moving, two passageways act as adsorption channel and desorption passageway respectively, and the adsorption channel adsorbs the gas mixture that gets into, and when the adsorbent in the adsorption channel reached to be full-loaded, through rotatory absorption inner core, make two passageways to trading, make the passageway after desorption as new adsorption channel, and full-loaded passageway carries out the desorption as the desorption passageway. In turn, the cycle operation can be carried out so that the adsorption process can be carried out continuously.
Example 2
A zero-emission storage method for VOCs in an organic material storage tank comprises the following steps:
s1, sealing connection: connecting the storage tank with a pressure balance main pipe through a pressure balance branch pipe, and then connecting the pressure balance main pipe with a dry type gas cabinet;
s2, initial phase setting: setting a constant pressure value of the dry type gas holder according to the storage capacity of the storage tank, wherein when the storage tank is in a full-empty state, the internal pressure of the storage tank communicated with the dry type gas holder is at the lowest position, namely the initial position, and the gauge pressure in the dry type gas holder is zero at the moment;
s3, gas protection: before the storage tank enters the materials, the circulating gas exhaust system is adopted to replace the air in the storage tank, so that the inner cavity of the storage tank is completely filled with the circulating gas, the inner cavity of the tank body forms an oxygen-free environment, and the air pressure of the inner cavity of the dry-type gas holder is kept to be an initial value in the replacement process, namely the gauge pressure is zero;
s4, constant-pressure feeding: the feeding is realized through a feeding hole of the storage tank, when the storage tank feeds materials gradually, the pressure of the inner cavities of the storage tank and the dry-type gas holder rises, when the pressure reaches the constant pressure of the dry-type gas holder, the dry-type gas holder starts to rise automatically, the dry-type gas holder rises synchronously along with the increase of the material entering amount in the storage tank, and in the rising process, the pressure of the inner cavities of the storage tank and the dry-type gas holder is always kept in a set constant pressure state;
s5, storage and volatilization: when all storage tanks reach the maximum storage capacity, the dry gas holder rises to the highest position at the moment, the internal pressure of the dry gas holder is still in a specified constant pressure, and oil substances in the storage tanks volatilize harmful gases, so that mixed gas in the system is a mixture of volatile organic material gas phase and circulating gas;
s6, volatile recovery: continuously charging circulating gas into the dry gas holder at regular time, simultaneously pumping the mixture in the dry gas holder to an adsorption device, keeping the internal pressure of the dry gas holder at a specified constant pressure, purifying the mixture by the adsorption device to be used as the circulating gas to enter the dry gas holder, and stopping continuously charging the circulating gas into the dry gas holder when the concentration of volatile matters in the mixture pumped out of the dry gas holder is reduced to a threshold value;
s7, constant-pressure discharging: when the storage tank discharges materials through the discharge hole, the internal pressure of the inner cavity of the dry type gas cabinet communicated with the storage tank is reduced, the height of the dry type gas cabinet is synchronously reduced at the moment, so that a constant pressure state is kept, when the discharge value of the storage tank is reduced to be lower than the constant value of the dry type gas cabinet, the internal pressure of the dry type gas cabinet is gradually reduced, and the dry type gas cabinet falls back to the initial lowest position state until all the storage tanks are emptied.
The effective volume of the dry gas holder is obtained according to P1V 1-P2V 2, wherein P1 is the system internal pressure (one atmosphere pressure is 100000 Pa) in the full-empty state of the volatile organic material storage tank, V1 is the effective volume of the volatile organic material, P2 is the internal pressure when the volatile organic material storage tank is full, V2 is the designed effective volume of the gas holder, and V2-P1 VI/P2 can be calculated.
Through setting up two-way trachea sealing connection volatile oils and storing jar and dry-type gas holder, wherein two-way tracheal one end sealing connection dry-type gas holder, two-way tracheal other end is provided with a plurality of ports, stores when realizing many storage tanks, adopts nitrogen gas discharge system to replace inside air, makes volatile oils store the inner chamber of jar and all is full of nitrogen gas for jar internal chamber forms anaerobic environment, so the system is safe and reliable all the time.
When the material storage tank is in a full-empty state, the gas holder is at the lowest position, namely the initial position, the gauge pressure of the system is displayed as 0 at the moment, when the volatile oil storage tank is fed gradually, the pressure of the inner cavities of the volatile oil storage tank and the dry gas holder is increased, when the pressure reaches the constant pressure of the dry gas holder, the dry gas holder starts to be automatically increased, the dry gas holder is synchronously increased along with the increase of the entering amount, in the increasing process, the pressure of the inner cavities of the volatile oil storage tank and the dry gas holder is always kept in a set constant pressure state, oil substances in the volatile oil storage tank volatilize harmful gas, mixed gas in the system is a mixture of volatile organic material gas phase and nitrogen, and the whole system always ensures that no volatile material gas phase is discharged into the atmosphere.
Along with the volatilization of the oily substance in the volatile oils storage tank, make the inner chamber pressure of dry-type gas holder rise gradually, because be provided with high-order limiting device and pressure relief valve in the dry-type gas holder, when the inside atmospheric pressure of dry-type gas holder reached the highest position, high-order limiting device acted on the pressure relief valve in the dry-type gas holder, make the safe pressure valve open, realize the automatic pressure release to the inner chamber of dry-type gas holder through the pressure relief valve, utilize fuel gas system or automatic torch system that gets into to carry out combustion processing to the mist after the pressure release, realize the thorough processing to volatile gas.
When the volatile oil storage tank discharges materials through the discharge hole, the internal pressure of an inner cavity communicated with the dry type gas cabinet and the volatile oil storage tank is reduced, the height of the dry type gas cabinet is synchronously reduced at the moment, so that a constant pressure state is kept, when the discharge value of the volatile oil storage tank is reduced to be below a constant value of the dry type gas cabinet, the internal pressure of the dry type gas cabinet is gradually reduced, and the dry type gas cabinet falls to the initial lowest position state until a storage tank is emptied.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (7)
1. The utility model provides an organic materials storage tank VOCs zero release storage system which characterized in that: the system comprises N storage tanks, a dry gas cabinet, a pressure balance main pipe, N pressure balance branch pipes and a purification and recovery device;
the storage tanks are provided with a feed inlet, a discharge outlet and an exhaust port, the N storage tanks are respectively connected with one end of a pressure balance main pipe through pressure balance branch pipes, and the other end of the pressure balance main pipe is connected with a dry-type gas cabinet;
the dry gas holder is provided with a pressure balance pipe interface, a circulating gas inlet and a recovered gas outlet;
purify recovery unit and include adsorption equipment and condensation heat exchanger, adsorption equipment has absorption passageway and desorption passageway, it has the adsorbent to all fill in absorption passageway and the desorption passageway, the import of absorption passageway is passed through the recovery gas export of pipe connection to dry-type gas cabinet, the export of absorption passageway passes through the branching unit and connects three routes pipeline, the pipeline of the first way is through the inlet connection of condensation heat exchanger with the desorption passageway, the second way pipeline is connected to the circulation gas import of dry-type gas cabinet, the third route pipeline is connected to the inlet connection of desorption passageway.
2. The zero-emission storage system for VOCs in an organic material storage tank of claim 1, wherein: a liquid level meter for displaying the liquid level of the storage tank is arranged in the storage tank.
3. The zero-emission storage system for VOCs in an organic material storage tank of claim 1, wherein: the dry gas holder has a high level restriction and a pressure relief valve.
4. The zero-emission storage system for VOCs in an organic material storage tank of claim 1, wherein: and the pipeline between the dry gas cabinet and the adsorption equipment and the three pipelines at the outlet of the adsorption channel are provided with induced draft fans.
5. The zero-emission storage system for VOCs in an organic material storage tank of claim 1, wherein: the adsorption equipment comprises a shell and an adsorption inner core arranged in the shell, the adsorption inner core is rotatably arranged in the shell through a rotating shaft, the rotating shaft is arranged along the axial direction of the shell, two end faces of the shell are respectively provided with an adsorption gas inlet and a desorption gas inlet, the adsorption inner core is provided with a central channel, the central channel is divided into two chambers by a middle partition plate, adsorbents are filled in the two chambers, two ends of the adsorption inner core are respectively provided with a sealing head, a gap is formed between the sealing head and the end face of the shell, the sealing heads are respectively provided with a through hole corresponding to the two chambers, the inner sides of the two adsorption gas inlets and the two desorption gas inlets of the shell are respectively provided with a vent pipe, the vent pipe consists of an outer pipe and an inner pipe penetrating through the outer pipe, one end of the inner pipe extending into the outer pipe is provided with a spring, the bottom of the spring is, the inner side of the end socket through hole of the adsorption inner core is provided with a guide cylinder, the guide cylinder is of a horn-shaped structure, the large-diameter end of the guide cylinder is in butt joint with the through hole of the end socket, and the diameter of the small-diameter end of the guide cylinder is larger than that of the inner pipe.
6. The zero-emission storage system for VOCs in an organic material storage tank of claim 1, wherein: the intermediate partition board is made of heat insulating materials.
7. A zero-emission storage method for VOCs in an organic material storage tank is characterized by comprising the following steps:
s1, sealing connection: connecting the storage tank with a pressure balance main pipe through a pressure balance branch pipe, and then connecting the pressure balance main pipe with a dry type gas cabinet;
s2, initial phase setting: setting a constant pressure value of the dry type gas holder according to the storage capacity of the storage tank, wherein when the storage tank is in a full-empty state, the internal pressure of the storage tank communicated with the dry type gas holder is at the lowest position, namely the initial position, and the gauge pressure in the dry type gas holder is zero at the moment;
s3, gas protection: before the storage tank enters the materials, the circulating gas exhaust system is adopted to replace the air in the storage tank, so that the inner cavity of the storage tank is completely filled with the circulating gas, the inner cavity of the tank body forms an oxygen-free environment, and the air pressure of the inner cavity of the dry-type gas holder is kept to be an initial value in the replacement process, namely the gauge pressure is zero;
s4, constant-pressure feeding: the feeding is realized through a feeding hole of the storage tank, when the storage tank feeds materials gradually, the pressure of the inner cavities of the storage tank and the dry-type gas holder rises, when the pressure reaches the constant pressure of the dry-type gas holder, the dry-type gas holder starts to rise automatically, the dry-type gas holder rises synchronously along with the increase of the material entering amount in the storage tank, and in the rising process, the pressure of the inner cavities of the storage tank and the dry-type gas holder is always kept in a set constant pressure state;
s5, storage and volatilization: when all storage tanks reach the maximum storage capacity, the dry gas holder rises to the highest position at the moment, the internal pressure of the dry gas holder is still in a specified constant pressure, and oil substances in the storage tanks volatilize harmful gases, so that mixed gas in the system is a mixture of volatile organic material gas phase and circulating gas;
s6, volatile recovery: continuously charging circulating gas into the dry gas holder at regular time, simultaneously pumping the mixture in the dry gas holder to an adsorption device, keeping the internal pressure of the dry gas holder at a specified constant pressure, purifying the mixture by the adsorption device to be used as the circulating gas to enter the dry gas holder, and stopping continuously charging the circulating gas into the dry gas holder when the concentration of volatile matters in the mixture pumped out of the dry gas holder is reduced to a threshold value;
s7, constant-pressure discharging: when the storage tank discharges materials through the discharge hole, the internal pressure of the inner cavity of the dry type gas cabinet communicated with the storage tank is reduced, the height of the dry type gas cabinet is synchronously reduced at the moment, so that a constant pressure state is kept, when the discharge value of the storage tank is reduced to be lower than the constant value of the dry type gas cabinet, the internal pressure of the dry type gas cabinet is gradually reduced, and the dry type gas cabinet falls back to the initial lowest position state until all the storage tanks are emptied.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801146A (en) * | 2015-04-17 | 2015-07-29 | 李振华 | Device and process for recovering volatile organic gas |
| CN105251312A (en) * | 2015-10-28 | 2016-01-20 | 珠海格力电器股份有限公司 | Air purification system and control method thereof |
| CN105498446A (en) * | 2016-01-08 | 2016-04-20 | 浙江大学 | Method for recycling organic matter through organic waste gas adsorption, steam desorption and fractional condensation |
| CN106542229A (en) * | 2016-12-09 | 2017-03-29 | 大连福佳·大化石油化工有限公司 | Atmospheric storage tank gas phase oil gas breathes recovery system |
| CN207042186U (en) * | 2017-06-01 | 2018-02-27 | 上海盛剑环境系统科技有限公司 | A kind of organic waste gas treatment system |
| CN108273354A (en) * | 2018-04-12 | 2018-07-13 | 洛阳天宝环保科技有限公司 | A kind of VOC gas absorber two level heat returns to level-one energy conserving system and method |
| CN108295620A (en) * | 2018-01-26 | 2018-07-20 | 华北理工大学 | A kind of zeolite rotating cylinder and its adsorption cleaning system |
| CN110227310A (en) * | 2019-06-19 | 2019-09-13 | 上海汉磊环保科技有限公司 | One kind VOCs containing styrene waste gas treatment device and method |
-
2020
- 2020-05-25 CN CN202010451821.2A patent/CN111591610B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104801146A (en) * | 2015-04-17 | 2015-07-29 | 李振华 | Device and process for recovering volatile organic gas |
| CN105251312A (en) * | 2015-10-28 | 2016-01-20 | 珠海格力电器股份有限公司 | Air purification system and control method thereof |
| CN105498446A (en) * | 2016-01-08 | 2016-04-20 | 浙江大学 | Method for recycling organic matter through organic waste gas adsorption, steam desorption and fractional condensation |
| CN106542229A (en) * | 2016-12-09 | 2017-03-29 | 大连福佳·大化石油化工有限公司 | Atmospheric storage tank gas phase oil gas breathes recovery system |
| CN207042186U (en) * | 2017-06-01 | 2018-02-27 | 上海盛剑环境系统科技有限公司 | A kind of organic waste gas treatment system |
| CN108295620A (en) * | 2018-01-26 | 2018-07-20 | 华北理工大学 | A kind of zeolite rotating cylinder and its adsorption cleaning system |
| CN108273354A (en) * | 2018-04-12 | 2018-07-13 | 洛阳天宝环保科技有限公司 | A kind of VOC gas absorber two level heat returns to level-one energy conserving system and method |
| CN110227310A (en) * | 2019-06-19 | 2019-09-13 | 上海汉磊环保科技有限公司 | One kind VOCs containing styrene waste gas treatment device and method |
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