CN110420536A - Tank deck VOCs recycling and nitrogen reutilization system and method - Google Patents
Tank deck VOCs recycling and nitrogen reutilization system and method Download PDFInfo
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- CN110420536A CN110420536A CN201910796896.1A CN201910796896A CN110420536A CN 110420536 A CN110420536 A CN 110420536A CN 201910796896 A CN201910796896 A CN 201910796896A CN 110420536 A CN110420536 A CN 110420536A
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- heat exchanger
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 164
- 239000012855 volatile organic compound Substances 0.000 title claims abstract description 99
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 82
- 238000004064 recycling Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000001179 sorption measurement Methods 0.000 claims abstract description 88
- 239000007789 gas Substances 0.000 claims abstract description 86
- 238000001816 cooling Methods 0.000 claims abstract description 62
- 238000005057 refrigeration Methods 0.000 claims abstract description 50
- 238000009833 condensation Methods 0.000 claims abstract description 43
- 230000005494 condensation Effects 0.000 claims abstract description 43
- 238000010521 absorption reaction Methods 0.000 claims abstract description 29
- 238000001704 evaporation Methods 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims description 42
- 239000003463 adsorbent Substances 0.000 claims description 17
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 16
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 16
- 239000004571 lime Substances 0.000 claims description 16
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 5
- 238000003795 desorption Methods 0.000 claims description 3
- 238000002224 dissection Methods 0.000 claims description 3
- 230000007420 reactivation Effects 0.000 claims description 3
- 230000008929 regeneration Effects 0.000 claims description 3
- 238000011069 regeneration method Methods 0.000 claims description 3
- 230000009466 transformation Effects 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 2
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- 239000003507 refrigerant Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000002826 coolant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 3
- 230000008016 vaporization Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 238000004781 supercooling Methods 0.000 description 2
- 239000003513 alkali Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0003—Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
-
- 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
- B01D53/002—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 condensation
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
- C01B21/0405—Purification or separation processes
- C01B21/0433—Physical processing only
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B21/00—Nitrogen; Compounds thereof
- C01B21/04—Purification or separation of nitrogen
- C01B21/0405—Purification or separation processes
- C01B21/0433—Physical processing only
- C01B21/045—Physical processing only by adsorption in solids
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Inorganic Chemistry (AREA)
- Separation Of Gases By Adsorption (AREA)
- Separation By Low-Temperature Treatments (AREA)
Abstract
The invention discloses a kind of tank deck VOCs recycling and nitrogen reutilization systems and method, the system includes pressurization subsystem, condensation subsystem, pressure-variable adsorption subsystem and nitrogen recycling subsystem, the subsystem that pressurizes includes pressurization air pump and fire arrester, condensation subsystem includes Recuperative heat exchanger, precool heat exchanger device, shallow cold heat exchanger, deep-cooling heat exchanger, explosion-proof refrigeration compressor, condensing heat exchanger, evaporating condensation heat exchanger and restricting element etc., pressure-variable adsorption subsystem includes the pressure-swing absorption apparatus being arranged in parallel more than two, nitrogen recycling subsystem is made of nitrogen buffer tank and check valve.Of the invention is recycled by pressurization Recuperative heat exchanger, precool heat exchanger device, shallow cold heat exchanger, deep-cooling heat exchanger progress gradual change cooling condensation, pressure-variable adsorption and purifies tank deck VOCs gas, final VOCs is recycled, it is recycled after tank deck nitrogen is purified, and unit is in operation without any secondary pollution.
Description
Technical field
The present invention relates to a kind of tank deck VOCs recycling and inert gas reutilization systems and method, more particularly to
A kind of recycling of nitrogen sealed cans top gas and nitrogen reutilization system and method.
Background technique
In oil refining, petrochemical plant, various oil products or petroleum chemicals are stored.Storage tank is mostly built in outdoor, to keep away
Exempt from these materials and directly contacted with air, prevent material from volatilizing, is oxidized and the safety of container is protected frequently with nitrogen seal device
The pressure for holding container top nitrogen is constant, is allowed to be isolated from the outside world.In addition, storing the small breathing of process, big breathing to reduce storage tank
And the loss for causing material to volatilize, also use nitrogen seal device.
Tank deck VOCs waste gas pollution control and treatment is carried out comprehensively under safety in production and environmental protection pressure.Chinese patent
CN201721880896.2 discloses a kind of VOCs gas device of recycling fixed roof tank discharge, which passes through alkali cleaning
The treatment facility of unit, recovery unit and the combination of fuel gas pipe network, which solve VOCs qualified discharge, but the loss of fuel gas
But very big.So far, there has been no can both meet VOCs recycling in tank deck VOCs gas and seal nitrogen again to tank deck in the market
The Zero discharging system utilized.
Summary of the invention
Goal of the invention: for overcome the deficiencies in the prior art, the first purpose of the invention is to provide a kind of utilizations to pressurize,
Condensation, pressure-variable adsorption, nitrogen recycling technology realizes the cooling recycling of tank deck VOCs and what purification separation went out nitrogen recycling is
System；Second purpose is to provide a kind of method for realizing VOCs recycling using above system, while purified nitrogen can be sharp again
With.
Technical solution: in order to solve the above technical problem, the present invention provides a kind of tank deck VOCs recycling and nitrogen it is sharp again
With system, including pressurization subsystem, condensation subsystem, pressure-variable adsorption subsystem and nitrogen recycling subsystem；The pressurization subsystem
System is connected with the outlet of air inlet lime set tank, including the first fire arrester, pressurization air pump and the second fire arrester；The condensation subsystem packet
Recuperative heat exchanger, knockout drum, the first refrigeration subsystem and the second refrigeration subsystem are included, first refrigeration subsystem includes
First explosion-proof refrigeration compressor, condensing heat exchanger, precooled throttling element, precool heat exchanger device, shallow cold restricting element, shallow cold heat exchange
Device, evaporative condenser restricting element, evaporating condensation heat exchanger and the first gas-liquid separator；The second sub- refrigeration system includes second
Explosion-proof refrigeration compressor, evaporating condensation heat exchanger, copious cooling throttle element, deep-cooling heat exchanger and the second gas-liquid separator；Described
One refrigeration subsystem and the second sub- refrigeration system share evaporating condensation heat exchanger；
The hot side liquid passage inlet of the Recuperative heat exchanger is connected with pressurized system outlet, the hot side gas circuit of Recuperative heat exchanger
Outlet is connected with precool heat exchanger device import, and the gas circuit outlet of precool heat exchanger device is connected with shallow cold heat exchanger import, shallow cold heat exchanger
Gas circuit outlet be connected with deep-cooling heat exchanger import, deep-cooling heat exchanger export is connected with the cold side liquid passage inlet of Recuperative heat exchanger,
The cold side gas circuit outlet of Recuperative heat exchanger is connected by knockout drum with pressure-variable adsorption subsystem air inlet, pressure-variable adsorption subsystem
System exhaust outlet is connected with nitrogen recycling subsystem, and the nitrogen recycling subsystem includes nitrogen buffer tank and check valve, the nitrogen
Gas buffer tank is connected by the check valve with pressure-variable adsorption subsystem exhaust outlet, is connected between the nitrogen buffer tank and tank deck
There is control valve；
The first explosion-proof refrigeration compressor, condensing heat exchanger, three heat exchange branches of parallel connection, the first gas-liquid separator according to
The first refrigeration cycle of secondary connected composition；Wherein the first heat exchange branch includes precooled throttling element and precool heat exchanger device, and second
The branch that exchanges heat includes shallow cold restricting element and shallow cold heat exchanger, and third heat exchange branch includes evaporative condenser restricting element and evaporates cold
Solidifying heat exchanger；The second explosion-proof refrigeration compressor, evaporating condensation heat exchanger, copious cooling throttle element, deep-cooling heat exchanger and second
Gas-liquid separator, which is sequentially connected, constitutes the second refrigeration cycle；
The pressure-variable adsorption subsystem includes the pressure-swing absorption apparatus being arranged in parallel more than two；Every group of pressure-variable adsorption dress
The outlet for the parsing valve set is connected with the entrance of air inlet lime set tank.
Preferably, the pressure-swing absorption apparatus includes adsorption tanks, intake valve, parsing valve and exhaust valve, the adsorption tanks
Including absorption tank body, it is placed in the intracorporal adsorbent of adsorption tanks and makes the resolver of adsorbent reactivation.
Preferably, the pressure-swing absorption apparatus is two groups, wherein one group to VOCs gas absorption, while another group of progress
Dissection process；
Two groups of pressure-swing absorption apparatus include adsorption tanks A, adsorption tanks B, intake valve A, intake valve B, parsing valve A, parsing
Valve B, exhaust valve A, exhaust valve B；
Knockout drum is connected by intake valve A with the air inlet of the bottom adsorption tanks A；The outlet on the top the adsorption tanks A
Mouth is connected by exhaust valve A with nitrogen buffer tank.
Preferably, being offered on the Recuperative heat exchanger, precool heat exchanger device, shallow cold heat exchanger and deep-cooling heat exchanger bottom
Liquid outlet collects condensed VOCs liquid.
Preferably, the treatment temperature of the Recuperative heat exchanger is 20 ± 3 DEG C, the treatment temperature of precool heat exchanger device is 4 ± 5
DEG C, the treatment temperature of shallow cold heat exchanger is -25 ± 5 DEG C, and the treatment temperature of deep-cooling heat exchanger is -60 ± 10 DEG C.
The method that VOCs recycling and nitrogen recycle is realized using the tank deck VOCs recycling and nitrogen reutilization system,
The following steps are included:
Pressurization steps: tank deck (101) nitrogen envelope VOCs gas is discharged to by air inlet lime set tank (201) by pressurization air pump (203)
Interior lime set simultaneously caches；
Refrigeration step: VOCs gas is passed through by Recuperative heat exchanger (205), precool heat exchanger device by pressurization air pump (203)
(206), shallow cold heat exchanger (207), in deep-cooling heat exchanger (208), by the circulating cooling of refrigerating circuit, make VOCs gas cooling
Liquefaction, 95% or more VOCs gas cooling are liquid, by Recuperative heat exchanger (205), precool heat exchanger device (206), shallow cold heat exchange
The liquid outlet recycling of device (207), deep-cooling heat exchanger (208) bottom；
Adsorption treatment step: the VOCs gas after condensation process is input in the adsorption tanks of pressure-variable adsorption subsystem and is carried out
Adsorption treatment obtains pure nitrogen through check valve (304) and guides to nitrogen buffer tank (301) after absorption；It, will by the switching of valve
VOCs gas after condensation process is switched to from the adsorption tanks for being passed through adsorption saturation is passed through another adsorption tanks progress adsorption treatment；
Parse regeneration step: the adsorption tanks for opening adsorption saturation parse valve, parse to adsorbent, will be adsorbed on suction
VOCs desorbing gas in attached dose comes out；The VOCs gas that desorption comes out, the air inlet of VOCs exhaust gas front end is transported to by pressure
The entrance of lime set tank (201) is recycled into next recycling；
Nitrogen recycling step；Pure nitrogen storage passes through regulating valve A (102) in nitrogen buffer tank (301) after adsorbing
It recycles to tank deck (101) or is recycled by the recyclable device that regulating valve B (103) are connected to it.
The utility model has the advantages that in tank deck VOCs provided by the invention recycling and nitrogen reutilization system, condensation subsystem passes through the
The high temperature and pressure coolant gas that one explosion-proof refrigeration compressor generates, after condensing heat exchanger is condensed into high-pressure sub-cooled liquid, then
Pre-cooled restricting element, shallow cold restricting element are transported to precool heat exchanger device, in shallow cold heat exchanger, and coolant evaporation absorbs VOCs gas
The heat of body vaporizes, and makes the cooling liquefaction of VOCs gas；The high temperature and pressure coolant gas generated by the second explosion-proof refrigeration compressor
Body is transported in deep-cooling heat exchanger after evaporating condensation heat exchanger is condensed into high-pressure sub-cooled liquid, then through copious cooling throttle element, cold
But agent evaporation absorbs the heat vaporization of VOCs gas, makes the cooling liquefaction of VOCs gas.Also, the present invention uses multiple groups pressure-variable adsorption
Device alternate treatment, adsorbent equipment are made of the adsorption tanks of two alternating sorbents and parsing.When an adsorption tanks are in adsorption-like
When state, another adsorption tanks is in analysis state.When the amount for adsorbing VOCs gas in adsorption tanks reaches certain value (close to saturation),
Carry out absorption and resolving switching.Resolving is using absorption pressure inside the tank is reduced, with the reduction of pressure, saturated extent of adsorption
It reduces, so that VOCs qi exhaustion be gone out, the VOCs gas of abjection is transported to the entrance of the air inlet lime set tank of device front end by pressure, into
Enter recycling circulation next time.Compared with prior art, the present invention has the advantage that
(1) of the invention to be returned by pressurization subsystem, condensation subsystem, pressure-variable adsorption subsystem, nitrogen recycling subsystem
It receives VOCs gas and reuse is carried out to purified nitrogen by regulating valve；(2) pressurization air pump of the invention is flame-proof converter spiral shell
Bar compressor, pressure can boost to 0.4~0.8MPa, improve the condensation temperature of VOCs gas, and then improve refrigerating efficiency；(3)
Of the invention is adsorbed as two or more, can carry out the absorption with pressure and decompression parsing of VOCs gas simultaneously, improve working efficiency, drop
Low adsorption agent usage amount；(4) adsorbent VOCs gas is desorbed out by pressure reduction in adsorption tanks of the present invention, makes to inhale
Attached dose has activity again, does not need additional power and unit is in operation without any secondary pollution；(5) present invention absorption
The oil gas of agent parsing abjection is through excess pressure, into the entrance of the air inlet lime set tank of condensation front end, into recycling circulation next time；
(6) tank deck VOCs gas of the present invention passes sequentially through Recuperative heat exchanger, precool heat exchanger device, shallow cold heat exchanger, deep-cooling heat exchanger, right
VOCs gas carries out gradual change cooling, the effective VOCs removed in VOCs gas, and recycles to the VOCs that condensation goes out；(7)
Tank deck VOCs gas of the present invention obtains the nitrogen of high-purity after adsorbing, and can directly recycle through regulating valve.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of tank deck VOCs of the present invention recycling and nitrogen reutilization system；
Fig. 2 is condensation subsystem structural schematic diagram in tank deck VOCs of the present invention recycling and nitrogen reutilization system；
Fig. 3 is the VOCs air-flow schematic diagram of tank deck VOCs of the present invention recycling and nitrogen reutilization system.
In Fig. 1,101- tank deck, 102- regulating valve A, 103- regulating valve B, 201- air inlet lime set tank, the first fire arrester of 202-,
203- pressurization air pump, the second fire arrester of 204-, 205- Recuperative heat exchanger, 206- precool heat exchanger device, the shallow cold heat exchanger of 207-, 208-
Deep-cooling heat exchanger, 209- knockout drum, 301- nitrogen buffer tank, 302- adsorption tanks A, 303- adsorption tanks B, 304- check-valves,
401- intake valve A, 402- intake valve B, 403- parse valve A, 404- and parse valve B, 405- exhaust valve A, 406- exhaust valve B.
In Fig. 2, the explosion-proof refrigeration compressor of 501- first, 502- condensing heat exchanger, 503- precooled throttling element, 504- are shallowly cold
Restricting element, 505- evaporative condenser restricting element, 506- evaporating condensation heat exchanger, the explosion-proof refrigeration compressor of 601- second, 602-
Copious cooling throttle element, the second gas-liquid separator of 603-.
In Fig. 3,1- air inlet, the outlet of 2- pressurization air pump, the outlet of 3- Recuperative heat exchanger, the outlet of 4- precool heat exchanger device, 5- are shallow
Cold heat exchanger outlet, the outlet of 6- deep-cooling heat exchanger, 7- absorption outlet.
Specific embodiment
Technical solution of the present invention is described in detail below by attached drawing, but protection scope of the present invention is not limited to
The embodiment.
As shown in Figs. 1-2, a kind of tank deck VOCs recycling disclosed by the embodiments of the present invention and nitrogen reutilization system, it is main to wrap
Include pressurization subsystem, condensation subsystem, pressure-variable adsorption subsystem, nitrogen recycling subsystem；Wherein pressurization subsystem and air inlet are solidifying
The outlet of flow container 201 is connected, including the first fire arrester 202, pressurization air pump 203 and the second fire arrester 204；Condensation subsystem includes
Recuperative heat exchanger 205, knockout drum 209, the first refrigeration subsystem and the second refrigeration subsystem, the first refrigeration subsystem include
First explosion-proof refrigeration compressor 501, condensing heat exchanger 502, precooled throttling element 503, precool heat exchanger device 206, shallow cold throttling member
Part 504, shallow cold heat exchanger 207, evaporative condenser restricting element 505, evaporating condensation heat exchanger 506 and the first gas-liquid separator 507；
Second sub- refrigeration system includes the second explosion-proof refrigeration compressor 601, evaporating condensation heat exchanger 506, copious cooling throttle element 602, depth
Cold heat exchanger 208 and the second gas-liquid separator 603；First refrigeration subsystem and the second sub- refrigeration system share evaporation condensation heat-exchange
Device 506 constitutes a twin-stage folding type cooling system.
The hot side liquid passage inlet of Recuperative heat exchanger 205 is connected with pressurized system outlet, the hot side gas of Recuperative heat exchanger 205
Way outlet is connected with 206 import of precool heat exchanger device, and the gas circuit outlet of precool heat exchanger device 206 is connected with shallow 207 import of cold heat exchanger,
The gas circuit outlet of shallow cold heat exchanger 207 is connected with 208 import of deep-cooling heat exchanger, the outlet of deep-cooling heat exchanger 208 and Recuperative heat exchanger
205 cold side liquid passage inlet is connected, and the cold side gas circuit outlet of Recuperative heat exchanger 205 passes through knockout drum 209 and pressure-variable adsorption
Subsystem air inlet is connected, and pressure-variable adsorption subsystem exhaust outlet is connected with nitrogen recycling subsystem, and nitrogen recycling subsystem includes
Nitrogen buffer tank 301 and check valve 304, nitrogen buffer tank 301 pass through check valve 304 and pressure-variable adsorption subsystem exhaust outlet phase
Even, control valve 102 is connected between nitrogen buffer tank 301 and tank deck 101；
First explosion-proof refrigeration compressor 501, condensing heat exchanger 502, three heat exchange branches in parallel, the first gas-liquid separator
507 are sequentially connected the first refrigeration cycle of composition；Wherein the first heat exchange branch includes precooled throttling element 503 and precool heat exchanger
Device 206, the second heat exchange branch include shallow cold restricting element 504 and shallow cold heat exchanger 207, and third heat exchange branch includes evaporative condenser
Restricting element 505 and evaporating condensation heat exchanger 506；Second explosion-proof refrigeration compressor 601, evaporating condensation heat exchanger 506, deep cooling section
Fluid element 602, deep-cooling heat exchanger 208 and the second gas-liquid separator 603, which are sequentially connected, constitutes the second refrigeration cycle；
First fire arrester 202, the second fire arrester 204 are separately designed in pressurization 203 front and back end of air pump, for preventing flame from altering
Enter next link or flame is prevented to spread in pipeline enclosure, the first fire arrester is anti-detonation type, and the second fire arrester is explosion-proof type.Add
Pressure air pump 203 is flame-proof converter helical-lobe compressor, and pressure can boost to 0.4~0.8MPa.
Pressure-variable adsorption subsystem includes pressure-swing absorption apparatus more than two；Every group of pressure-swing absorption apparatus include adsorption tanks,
Intake valve, parsing valve, exhaust valve, adsorption tanks include absorption tank body, are placed in the intracorporal adsorbent of adsorption tanks and make adsorbent reactivation
Resolver.Pressure-swing absorption apparatus is two groups in the present embodiment, is arranged in parallel each other；Wherein one group VOCs gas is inhaled
It is attached, while another group of carry out dissection process.The intracorporal adsorbent of adsorption tanks is active carbon from coal.Pressure-swing absorption apparatus includes absorption
Tank A 302, adsorption tanks B 303, intake valve A 401, intake valve B 402, parsing valve A 403, parsing valve B 404, exhaust valve A
405, exhaust valve B 406.
Knockout drum 203 is connected by intake valve A 401 with the air inlet of 302 bottom adsorption tanks A；Adsorption tanks A 302
The gas outlet on top is connected by exhaust valve A 405 with nitrogen buffer tank 301；The air inlet of 302 bottom adsorption tanks A and air inlet
The import of parsing valve A 403 is connected between the outlet valve A 401, the outlet of parsing valve A 403 is connect with air inlet lime set tank 201；
Recuperative heat exchanger 205, precool heat exchanger device 206, shallow cold heat exchanger 207, deep-cooling heat exchanger 208 are that efficient shell-tube type changes
Hot device or high-efficiency helical pipe heat exchanger offer liquid outlet on bottom, collect condensed VOCs liquid.Recuperative heat exchanger
205 treatment temperature is 20 ± 3 DEG C, and the treatment temperature of precool heat exchanger device 206 is 4 ± 5 DEG C, the processing temperature of shallow cold heat exchanger 207
Degree is -25 ± 5 DEG C, and the treatment temperature of deep-cooling heat exchanger 208 is -60 ± 10 DEG C, and each heat exchanger treatment temperature is for different
VOCs material and pressure-raising can appropriate adjustments.
The system main operational principle of the embodiment of the present invention is: by the first explosion-proof refrigeration compressor when refrigeration subsystem works
The high-temperature high-pressure refrigerant gas of 501 discharges enters condensing heat exchanger 502 and is condensed into high pressure supercooling refrigerant liquid, Fen Sanlu
Pre-cooled restricting element 503, shallow cold restricting element 504 and 505 reducing pressure by regulating flow of evaporative condenser restricting element at low-temp low-pressure vapour
Liquid two-phase mixture respectively enters precool heat exchanger device 206, shallow cold heat exchanger 207 and evaporating condensation heat exchanger 506, low-temp low-pressure
Vehicle repair major mixture is evaporated in precool heat exchanger device 206 and shallow cold heat exchanger 207 and is absorbed through VOCs gas therein
Heat evaporates in evaporating condensation heat exchanger 506 and absorbs the high temperature being discharged by the therein second explosion-proof refrigeration compressor 601
High-pressure refrigerant heat, the VOCs gas for flowing through precool heat exchanger device 206 and shallow cold heat exchanger 207 are able to cooling liquefaction, make to flow
The second level system refrigerant of warp is condensed, and refrigerant is prevented by first after sufficiently vaporizing by the first gas-liquid separator 507 again
The quick-fried compression of refrigeration compressor 501 enters next round and recycles.The high-temperature high-pressure refrigerant gas that second explosion-proof refrigeration compressor 601 is discharged
Body enter evaporating condensation heat exchanger 506 be condensed into high pressure supercooling refrigerant liquid, through 602 reducing pressure by regulating flow of copious cooling throttle element at
The vehicle repair major mixture of low-temp low-pressure enters deep-cooling heat exchanger 208, and the vehicle repair major mixture of low-temp low-pressure exchanges heat in deep cooling
The heat by VOCs gas therein is evaporated and absorbed in device 208, flow through deep-cooling heat exchanger 208 VOCs gas be able into
The cooling liquefaction of one step, refrigerant are pressed by the second explosion-proof refrigeration compressor 601 after sufficiently vaporizing by the second gas-liquid separator 603 again
It is retracted and is recycled into next round.
The method that VOCs recycling and nitrogen recycle is realized using above-mentioned tank deck VOCs recycling and nitrogen reutilization system,
It mainly comprises the steps that
(1) pressurization steps: 101 nitrogen of tank deck envelope VOCs gas is discharged in air inlet lime set tank 201 by pressurization air pump 203 and is coagulated
Liquid simultaneously caches；
(2) refrigeration step: by pressurization air pump 203 by VOCs gas be passed through Recuperative heat exchanger 205, precool heat exchanger device 206,
In shallow cold heat exchanger 207, deep-cooling heat exchanger 208, by the circulating cooling of refrigerating circuit, VOCs gas cooling is made to liquefy, 95%
Above VOCs gas cooling is liquid, is exchanged heat by Recuperative heat exchanger 205, precool heat exchanger device 206, shallow cold heat exchanger 207, deep cooling
The liquid outlet of 208 bottom of device recycles；
(3) adsorption treatment step: the VOCs gas after condensation process being input in adsorption tanks and carries out adsorption treatment, absorption
Pure nitrogen is obtained afterwards guides to nitrogen buffer tank 301 through check valve 304；By the switching of valve, by the VOCs after condensation process
Gas is switched to from the adsorption tanks for being passed through adsorption saturation is passed through another adsorption tanks progress adsorption treatment；
(4) parse regeneration step: the adsorption tanks for opening adsorption saturation parse valve, parse, will adsorb to adsorbent
VOCs desorbing gas in adsorbent comes out；The VOCs gas that desorption comes out, is transported to VOCs exhaust gas front end by pressure
The entrance of air inlet lime set tank 201 is recycled into next recycling；
(5) nitrogen recycling step；Pure nitrogen storage passes through regulating valve A102 in nitrogen buffer tank 301 after adsorbing
It recycles to tank deck 101 or is recycled by the recyclable device that regulating valve B103 is connected to it.
1 benzene head space gas of table is recycled procedure parameter
Process parameters detection when the present embodiment is divided into benzene with VOCs group illustrates the effect of the embodiment of the present invention, table 1
Benzene head space gas is recycled procedure parameter, wherein monitoring location point is as shown in Figure 3.Tank deck VOCs gas passes through pressurization air pump 203,
After VOCs gas boosting to 0.6MPa, Recuperative heat exchanger 205, precool heat exchanger device 206, shallow cold heat exchanger 207, depth are passed sequentially through
The classification cooling of cold heat exchanger 208 makes VOCs gas be cooled to -65 DEG C or so step by step, and 99% or more VOCs gas cooling is liquid
State is recycled by the liquid outlet of corresponding exchanger base.Treated, and tank deck gas is that purity surpasses 99.99% nitrogen, can be direct
It uses.
Specifically, the treatment temperature of Recuperative heat exchanger 205 is 20 ± 3 DEG C, and the treatment temperature of precool heat exchanger device 206 is 5 ± 3
DEG C, the treatment temperature of shallow cold heat exchanger 207 is -25 ± 3 DEG C, and the treatment temperature of deep-cooling heat exchanger 208 is -65 ± 3 DEG C, and complete machine is logical
It crosses above procedure constantly to recycle, to achieve the purpose that VOCs gas continuous cooling to -65 DEG C.At this time VOCs gas content≤
30mg/m3, the VOCs rate of recovery >=99%, nitrogen content >=99.99%.Relative to normal pressure condenser system, refrigerating efficiency is about improved
8%, condensation sled module unit land occupation about reduces 5%.According to the specific composition of VOCs gas, adherence pressure, temperature field can be in due course
Adjustment.
Condensed residue tank deck gas enters in adsorption tanks by intake valve, using the adsorbent in adsorption tanks to absorption
The selectivity of matter, i.e., the difference of binding force power between VOCs gas and nitrogen and active carbon make the difficult nitrogen adsorbed and easily inhale
Attached VOCs is separated, at this time VOCs gas content≤1mg/m3, VOCs purifying rate >=99.99%, nitrogen content >=99.999%；
The parsing valve being connected with adsorption tanks bottom air inlet is opened, is depressured, and gas is transmitted to entering for air inlet lime set tank 102
Mouthful, into next round sorption cycle, regenerate adsorbent.Relative to the normal pressure adsorption system of same condensation temperature subsystem,
This system adsorbent loading about reduces 50%, and absorption sled module unit cost reduces 45~55%, and absorption sled module unit accounts for
Ground about reduces 20%.Pure nitrogen can be conveyed directly by regulating valve outward, directly be utilized, and the envelope loss of tank deck nitrogen is reduced
And it can extra earning.
As described above, must not be explained although the present invention has been indicated and described referring to specific preferred embodiment
For the limitation to invention itself.It without prejudice to the spirit and scope of the invention as defined in the appended claims, can be right
Various changes can be made in the form and details for it.
Claims (6)
1. tank deck VOCs recycling and nitrogen reutilization system, it is characterised in that: including the subsystem, condensation subsystem, transformation of pressurizeing
Adsorption subsystem and nitrogen recycling subsystem；The pressurization subsystem is connected with the outlet of air inlet lime set tank (201), including first
Fire arrester (202), pressurization air pump (203) and the second fire arrester (204)；The condensation subsystem include Recuperative heat exchanger (205),
Knockout drum (209), the first refrigeration subsystem and the second refrigeration subsystem, first refrigeration subsystem include first explosion-proof
Refrigeration compressor (501), condensing heat exchanger (502), precooled throttling element (503), precool heat exchanger device (206), shallow cold throttling member
Part (504), shallow cold heat exchanger (207), evaporative condenser restricting element (505), evaporating condensation heat exchanger (506) and the first gas-liquid point
From device (507)；The second sub- refrigeration system include the second explosion-proof refrigeration compressor (601), evaporating condensation heat exchanger (506),
Copious cooling throttle element (602), deep-cooling heat exchanger (208) and the second gas-liquid separator (603)；First refrigeration subsystem and
Two sub- refrigeration systems share evaporating condensation heat exchanger (506)；
The hot side liquid passage inlet of the Recuperative heat exchanger (205) is connected with pressurized system outlet, the heat of Recuperative heat exchanger (205)
Gas circuit outlet in side is connected with precool heat exchanger device (206) import, gas circuit outlet and the shallow cold heat exchanger of precool heat exchanger device (206)
(207) import is connected, and the gas circuit outlet of shallow cold heat exchanger (207) is connected with deep-cooling heat exchanger (208) import, deep-cooling heat exchanger
(208) outlet is connected with the cold side liquid passage inlet of Recuperative heat exchanger (205), and the cold side gas circuit outlet of Recuperative heat exchanger (205) is logical
It crosses knockout drum (209) to be connected with pressure-variable adsorption subsystem air inlet, pressure-variable adsorption subsystem exhaust outlet and nitrogen recycling
System is connected, and the nitrogen recycling subsystem includes nitrogen buffer tank (301) and check valve (304), the nitrogen buffer tank
(301) it is connected by the check valve (304) with pressure-variable adsorption subsystem exhaust outlet, the nitrogen buffer tank (301) and tank deck
(101) control valve (102) are connected between；
The first explosion-proof refrigeration compressor (501), condensing heat exchanger (502), three heat exchange branches in parallel, the first gas-liquid point
It is sequentially connected from device (507) and constitutes the first refrigeration cycle；Wherein first heat exchange branch include precooled throttling element (503) and
Precool heat exchanger device (206), the second heat exchange branch include shallow cold restricting element (504) and shallow cold heat exchanger (207), third heat exchange branch
Road includes evaporative condenser restricting element (505) and evaporating condensation heat exchanger (506)；The second explosion-proof refrigeration compressor (601),
Evaporating condensation heat exchanger (506), copious cooling throttle element (602), deep-cooling heat exchanger (208) and the second gas-liquid separator (603) according to
The second refrigeration cycle of secondary connected composition；
The pressure-variable adsorption subsystem includes the pressure-swing absorption apparatus being arranged in parallel more than two；Every group of pressure-swing absorption apparatus
The outlet of parsing valve is connected with the entrance of air inlet lime set tank (201).
2. tank deck VOCs recycling according to claim 1 and nitrogen reutilization system, it is characterised in that: the pressure-variable adsorption
Device includes adsorption tanks, intake valve, parsing valve and exhaust valve, and the adsorption tanks include absorption tank body, to be placed in adsorption tanks intracorporal
Adsorbent and the resolver for making adsorbent reactivation.
3. tank deck VOCs recycling according to claim 1 and nitrogen reutilization system, it is characterised in that: the pressure-variable adsorption
Device is two groups, wherein one group to VOCs gas absorption, while another group of carry out dissection process；
Two groups of pressure-swing absorption apparatus include adsorption tanks A (302), adsorption tanks B (303), intake valve A (401), intake valve B
(402), valve A (403), parsing valve B (404), exhaust valve A (405), exhaust valve B (406) are parsed；
Knockout drum (209) is connected by intake valve A (401) with the air inlet of adsorption tanks A (302) bottom；The adsorption tanks A
(302) gas outlet on top is connected by exhaust valve A (405) with nitrogen buffer tank (301).
4. tank deck VOCs recycling according to claim 1 and nitrogen reutilization system, it is characterised in that: the backheat heat exchange
Liquid outlet is offered on device (205), precool heat exchanger device (206), shallow cold heat exchanger (207) and deep-cooling heat exchanger (208) bottom,
Collect condensed VOCs liquid.
5. tank deck VOCs recycling according to claim 1 and nitrogen reutilization system, it is characterised in that: the backheat heat exchange
The treatment temperature of device (205) is 20 ± 3 DEG C, and the treatment temperature of precool heat exchanger device (206) is 4 ± 5 DEG C, shallow cold heat exchanger (207)
Treatment temperature be -25 ± 5 DEG C, the treatment temperature of deep-cooling heat exchanger (208) is -60 ± 10 DEG C.
6. realizing VOCs recycling and nitrogen using the described in any item tank deck VOCs recycling of claim 1-5 and nitrogen reutilization system
The method that gas recycles, which comprises the following steps:
Pressurization steps: tank deck (101) nitrogen envelope VOCs gas is discharged in air inlet lime set tank (201) by pressurization air pump (203) and is coagulated
Liquid simultaneously caches；
Refrigeration step: by pressurization air pump (203) by VOCs gas be passed through Recuperative heat exchanger (205), precool heat exchanger device (206),
In shallow cold heat exchanger (207), deep-cooling heat exchanger (208), by the circulating cooling of refrigerating circuit, VOCs gas cooling is made to liquefy,
95% or more VOCs gas cooling is liquid, by Recuperative heat exchanger (205), precool heat exchanger device (206), shallow cold heat exchanger
(207), the liquid outlet recycling of deep-cooling heat exchanger (208) bottom；
Adsorption treatment step: the VOCs gas after condensation process is input in the adsorption tanks of pressure-variable adsorption subsystem and is adsorbed
Processing, obtains pure nitrogen through check valve (304) and guides to nitrogen buffer tank (301) after absorption；By the switching of valve, will condense
Treated, and VOCs gas is switched to from the adsorption tanks for being passed through adsorption saturation is passed through another adsorption tanks and carries out adsorption treatment；
Parse regeneration step: the adsorption tanks for opening adsorption saturation parse valve, parse to adsorbent, will be adsorbed on adsorbent
Interior VOCs desorbing gas comes out；The VOCs gas that desorption comes out, the air inlet lime set of VOCs exhaust gas front end is transported to by pressure
The entrance of tank (201) is recycled into next recycling；
Nitrogen recycling step；Pure nitrogen storage gives tank by regulating valve A (102) in nitrogen buffer tank (301) after adsorbing
It pushes up (101) recycling or is recycled by the recyclable device that regulating valve B (103) are connected to it.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4867773A (en) * | 1988-10-06 | 1989-09-19 | Air Products And Chemicals, Inc. | Cryogenic process for nitrogen production with oxygen-enriched recycle |
| KR20140096184A (en) * | 2013-01-25 | 2014-08-04 | 삼성중공업 주식회사 | Voc recovery system |
| CN104888490A (en) * | 2015-05-29 | 2015-09-09 | 南京都乐制冷设备有限公司 | VOCs gas condensation recovery device and method |
| CN108211648A (en) * | 2018-02-08 | 2018-06-29 | 广东申菱环境系统股份有限公司 | Heat reclamation type condenses and alternating temperature pressure-variable adsorption group technology device for recovering oil and gas |
| CN207722586U (en) * | 2017-11-10 | 2018-08-14 | 南京天膜科技股份有限公司 | A kind of device realized VOCs zero-emissions and recycle nitrogen |
| CN209009342U (en) * | 2018-08-31 | 2019-06-21 | 江苏新久扬环保设备科技有限公司 | A kind of gas of oil storage tank recovery system of recyclable nitrogen |
| CN110143378A (en) * | 2018-02-13 | 2019-08-20 | 中国石油化工股份有限公司 | Storage tank VOCs safe collection Zero emission method |
| CN210728724U (en) * | 2019-08-27 | 2020-06-12 | 南京都乐制冷设备有限公司 | System for recycling VOCs (volatile organic compounds) on tank top and recycling nitrogen |
-
2019
- 2019-08-27 CN CN201910796896.1A patent/CN110420536B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4867773A (en) * | 1988-10-06 | 1989-09-19 | Air Products And Chemicals, Inc. | Cryogenic process for nitrogen production with oxygen-enriched recycle |
| KR20140096184A (en) * | 2013-01-25 | 2014-08-04 | 삼성중공업 주식회사 | Voc recovery system |
| CN104888490A (en) * | 2015-05-29 | 2015-09-09 | 南京都乐制冷设备有限公司 | VOCs gas condensation recovery device and method |
| CN207722586U (en) * | 2017-11-10 | 2018-08-14 | 南京天膜科技股份有限公司 | A kind of device realized VOCs zero-emissions and recycle nitrogen |
| CN108211648A (en) * | 2018-02-08 | 2018-06-29 | 广东申菱环境系统股份有限公司 | Heat reclamation type condenses and alternating temperature pressure-variable adsorption group technology device for recovering oil and gas |
| CN110143378A (en) * | 2018-02-13 | 2019-08-20 | 中国石油化工股份有限公司 | Storage tank VOCs safe collection Zero emission method |
| CN209009342U (en) * | 2018-08-31 | 2019-06-21 | 江苏新久扬环保设备科技有限公司 | A kind of gas of oil storage tank recovery system of recyclable nitrogen |
| CN210728724U (en) * | 2019-08-27 | 2020-06-12 | 南京都乐制冷设备有限公司 | System for recycling VOCs (volatile organic compounds) on tank top and recycling nitrogen |
Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110841421A (en) * | 2019-12-09 | 2020-02-28 | 珠海大横琴科技发展有限公司 | Organic steam adsorbs recovery system |
| CN110960952A (en) * | 2019-12-20 | 2020-04-07 | 海湾环境科技（北京）股份有限公司 | Oil and gas treatment system and oil and gas treatment method |
| CN111249852B (en) * | 2020-02-13 | 2022-04-26 | 中国科学院理化技术研究所 | Regenerative oil gas VOCs condensation recovery system for mixed working medium refrigeration |
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| CN111498817A (en) * | 2020-04-23 | 2020-08-07 | 华北制药股份有限公司 | Nitrogen recycling process and nitrogen recycling system |
| CN111635777B (en) * | 2020-04-29 | 2022-04-15 | 上海同济华康环境科技有限公司 | Unsteady state oil gas recovery system |
| CN111635777A (en) * | 2020-04-29 | 2020-09-08 | 上海同济华康环境科技有限公司 | Unsteady state oil gas recovery system |
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