CN105233621B - A kind of volatile organic matter environment protection treating recovery method and device - Google Patents
A kind of volatile organic matter environment protection treating recovery method and device Download PDFInfo
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- CN105233621B CN105233621B CN201510649736.6A CN201510649736A CN105233621B CN 105233621 B CN105233621 B CN 105233621B CN 201510649736 A CN201510649736 A CN 201510649736A CN 105233621 B CN105233621 B CN 105233621B
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Abstract
A kind of volatile organic matter environment protection treating recovery method and device, it is related to containing volatile organic matter (VOCs) industrial waste gas environment protection treating and organic matter recovery technology, printing the environment protection treating and organic matter containing volatile organic matter (VOCs) industrial waste gas such as (dry laminating adhesive) industry, coating industry, petroleum chemical industry, Fine Chemical for plastic flexible package and reclaiming.The present invention will contain volatile organic compounds by pretreatment, by the adsorbent adsorption cleaning in clean-up bed, realize qualified discharge；Heated up at a temperature of nitrogen environment and 80 DEG C~120 DEG C desorption+condensation recovery+vacuum desorption+condensation of the adsorbent of adsorption saturation organic matter is reclaimed, and realizes organic solvent secondary recovery.Present invention improvement cycle period is short, device Governance Ability is big, operation is safe and efficient, realizes and optimizes unit treatment cost, and relatively conventional technique can save desorption cost more than 50%, the organic solvent of recovery is best in quality, with good environmental protection, energy-saving effect and economic benefit.
Description
Technical field
A kind of volatile organic matter environment protection treating recovery method and device, are related to containing volatile organic matter (VOCs) industry
Waste gas environment protection treating and organic matter recovery technology, for plastic flexible package printing (dry laminating adhesive) industry, coating industry, petrochemical industry
The environment protection treating and organic matter containing volatile organic matter (VOCs) industrial waste gas such as industry, Fine Chemical are reclaimed.
Background technology
Total industrial volatile organic matter (VOCs) annual emissions in the whole nation are met or exceeded more than 20,000,000 tons at present
National NOx emission level, and as the development of national economy shows ever-increasing trend, to organic containing volatility
The situation of thing (VOCs) industrial waste gas environment protection treating is very severe.
In the existing administering method to the environmental protection containing volatile organic matter (VOCs) industrial waste gas, absorption method is most economical and row
Effective Wind Volume, low concentration containing volatile organic matter (VOCs) industrial waste gas environment protection treating and reclaim method.But it is big
Air quantity, low concentration are reclaimed under operating mode containing volatile organic matter (VOCs) industrial waste gas environment protection treating and organic matter, and single technique is inhaled
, there is poor for applicability, high energy consumption, solvent and go bad serious etc. lack in the environment protection treating method of industrial waste gas containing volatile organic matter of attached method
Point, such as：Steam wet method desorption technique, waste water yield is big, and secondary pollution is big；The simple desorption technique by vacuum, it is main to lack
It is that adsorbent desorption efficiency is relatively low to fall into, and energy consumption is higher, is not easily achieved zero-emission, and under high humidity environment under vacuum desorption efficiency
Drop is serious；The heating of inert gas shielding operating mode desorbs+recovery process is condensed, its major defect is that desorption warming temperature is higher,
Condensation operation temperature is low, energy consumption big, it is rotten more serious to reclaim organic matter；And second adsorption concentration technology disadvantage is desorption
Stroke is long, and solvent is rotten serious.
In view of to the demand and existing recovery process of the environment protection treating of industrial waste gas containing volatile organic matter and recovery organic matter
The various defects that equipment is present, thus to applicability and highly versatile, economic benefit is excellent, is particularly adapted to Wind Volume, low dense
Spend focus of the research as industry research of the environment protection treating method of industrial waste gas containing volatile organic matter and retracting device.
The content of the invention
Present invention aims at one kind is provided under inert gas shielding environment, to being administered containing volatile organic compounds
During adsorbent desorption thoroughly, device Governance Ability is big, safe efficient, unit air volume administers energy consumption low, environmental protection, energy-conservation effect
Fruit and the economic benefit excellent new recovery method of environment protection treating containing volatile organic matter and device.
Recycling and administration method of the present invention is by by VOCs on-line checking valves, clean-up bed, adsorbs blower fan, clean-up bed adsorb into
Valve, clean-up bed absorption valve, clean-up bed solution inspiration valve, clean-up bed solution suction metering valve, clean-up bed nitrogen valve, solution induced-draught fan, heater,
Desorption system condenser, energy-saving heat exchanger, process exclusion valve, vacuum desorption condenser, vacuum desorption valve, vacuum desorption valve,
Vavuum pump, desorption system pressure sensor, clean-up bed temperature sensor desorbs hot blast temperature sensor, condensation temperature sensor
And the device that the process pipe being connected is constituted is realized, intelligent control is carried out by microcomputer automatic control system.The inventive method and
Nitrogen is used when retracting device works, whole governance process is carried out in nitrogen environmental protection.Filling activated carbon, work in clean-up bed
Property Carbon fibe, resin sorbent or molecular sieve are as adsorbent, for purification treatment industrial waste gas containing volatile organic matter.At this
One or many clean-up beds are used in inventive method and retracting device, for circulation treatment Industry Waste containing volatile organic matter
Gas, when carrying out waste gas pollution control and treatment using many clean-up beds, many clean-up bed parallel runnings are volatilized when in wherein one clean-up bed exhaust
Property organic matter start to penetrate or concentration close to environmental requirement discharge value when, the microcomputer automatic control clean-up bed enters desorption and administered
Flow or closing clean-up bed, which are adsorbed into valve and clean-up bed absorption valve, enters desorption wait state, is purified while opening other one
Bed enters purification treatment flow, keeps administering industrial waste gas purifying containing volatile organic matter and recovery is carried out continuously, purify
Gas qualified discharge afterwards, the clean-up bed of adsorption saturation is under nitrogen gas environmental protection, through circulating-heating, heating desorption+cold
Solidifying reclaim reclaims organic matter with vacuum desorption+condensation recovery three steps operation.
When the inventive method and retracting device work, the preprocessed cooling of industrial waste gas containing volatile organic matter, efficient mistake
Filtering dust collecting, the adsorption cleaning in feeding clean-up bed after the pressurization of absorption blower fan, the gas of meet the requirement of environmental protection is discharged into ambient air, when
Adsorbent adsorption saturation in clean-up bed, volatile organic matter starts to penetrate or close to the discharge value of environmental requirement in clean-up bed exhaust
When, microcomputer automatic control system is closed clean-up bed and adsorbed into valve and clean-up bed absorption valve, and purification treatment flow completes, is transferred to and follows
Ring desorbs governance flowchart or is transferred to desorption standby mode, while opening an other clean-up bed, adsorbs and enters into valve and absorption valve
Enter purification treatment flow, purification treatment is carried out continuously.After the completion of clean-up bed heating desorption, microcomputer automatic control system control purification
Bed is transferred to during vacuum desorption governance flowchart, vacuum desorption because organic matter volatilization needs to absorb a large amount of heat energy, in Vacuum solutions
While sucking back receipts organic matter, the purpose of adsorbent cooling can be reached again, the adsorbent heating desorption temperature in existing process
Reaching more than 180 DEG C of degree just can thoroughly desorb, and the inventive method completes adsorbent in 80 DEG C~120 DEG C of safety low-temperature environment
Thoroughly desorb, realize more than 40% energy-saving effect, the adsorbent after heating is desorbed through vacuum technology depth, and purification treatment is returned
The recovery ability of receipts system improves more than 30%.
After the completion of clean-up bed circulation heating desorption flow, organic concentration reaches recovery condition in desorption system, and system turns
Enter circulation heating desorption+condensation recovery process, when organic matter in circulation heating desorption+condensation recovery process organic matter main condenser
When concentration reaches that balance is no longer condensed, system is transferred in vacuum desorption+condensation recovery process, clean-up bed high warm contained by adsorbent
Vacuum desorption can be used for, vacuum desorption efficiency can be increased substantially, adsorbent is thoroughly desorbed, further improve is controlled
Reason ability, optimizes the energy expenditure of unit waste gas pollution control and treatment.
After clean-up bed adsorption saturation, microcomputer automatic control system controls the clean-up bed to enter waste gas and desorbs recycling and administration stream
Journey, is first shut off clean-up bed and adsorbs into valve, opens clean-up bed absorption valve, clean-up bed nitrogen valve is then turned on, by nitrogen system
It is blown into clean-up bed with clean-up bed in equal volume to the high pure nitrogen of 1.5 times of volumes, the interior air of displacement purge bed is nitrogen environment, nitrogen
Clean-up bed nitrogen valve, clean-up bed absorption valve are closed after the completion of gas displacement, clean-up bed solution inspiration valve, clean-up bed desorption is then turned on
Valve, process exclusion valve, circulating desorption valve, start solution induced-draught fan, and desorption system pressure sensor is started working, and works as desorption system
When pressure sensor pressure value is negative pressure, clean-up bed nitrogen valve is opened, high pure nitrogen is supplemented into desorption system, desorption system is kept
After system slight positive pressure state, desorption system pressure stability, heater thermal source, control heater outlet temperature numerical value is maintained at 80
DEG C~120 DEG C between, administer operation and enter clean-up bed circulating-heating desorption flow, in this flow, absorption has in adsorbent
Machine thing starts volatilization, after organic concentration reaches recovery condition in system, opens and reclaims desorption valve, closes circulating desorption valve,
Main condenser refrigerant is opened, organic matter is condensed into liquid in heat exchanger and main condenser and is recycled, and is discharged into returnable；It is micro-
Computer automatic control system monitors clean-up bed temperature sensor temperature value, when clean-up bed desorption temperature rises to desorption hot blast temperature
More than 80%, or in main condenser organic concentration reach balance no longer condense when or without organic matter condensation when, only
Change bed heating desorption to complete, close clean-up bed solution inspiration valve, process exclusion valve, reclaim desorption valve, open vacuum desorption valve, vacuum
Suction metering valve is solved, starts vavuum pump, vacuum desorption condenser refrigerant is opened, clean-up bed is transferred to vacuum desorption+condensation recovery process, only
Change in bed vacuum desorption+condensation recovery process, when safe temperature of the clean-up bed temperature drop to less than 80 DEG C and clean-up bed vacuum
When degree cell pressure drops to absolute 5~8kPa of press, microcomputer automatic control system closes system respective valves, stops vacuum
Pump, terminates vacuum desorption+condensation recovery process, opens the multiple pressure valve of clean-up bed, and clean-up bed reverts to normal pressure shape by nitrogen system
State, all desorption operating process completions, clean-up bed is transferred to next purification adsorption process or enters purification absorption wait flow.
The present invention administers recovery method and device is beneficial in that：The concise in technology reclaimed is administered, clean-up bed is 80
DEG C~120 DEG C at a temperature of heating desorption+condensation reclaim and complete first time organic solvent and reclaim, the clean-up bed after heating uses vacuum
Desorption+condensation, which is reclaimed, completes second of organic solvent recovery, and the organic solvent of recovery is best in quality, realizes more than 40% section
Energy effect, reclaims ability and improves more than 30%, while adsorbent desorption is thorough, improvement cycle period is short, device Governance Ability
Greatly, safe and efficient, realization optimization unit treatment cost is run, relatively conventional technique, which can be saved, desorbs cost more than 50%, fits
Reclaimed for Wind Volume, low concentration industrial waste gas containing volatile organic matter environment protection treating organic matter, with good environmental protection, energy-conservation
Effect and economic benefit.
Brief description of the drawings
Fig. 1 are the improvement recovery process flow and apparatus structure schematic diagram that the present invention administers recovery method and device, not
The inventive method and device are defined.
In figure：VOCs detects valve 1, clean-up bed absorption valve 2, the multiple pressure valve 3 of clean-up bed, clean-up bed solution inspiration valve 4, heater
5, circulating desorption valve 6, reclaim desorption valve 7, vacuum desorption valve 8, clean-up bed nitrogen valve 9, clean-up bed solution suction metering valve 10, technique every
Disconnected valve 11, heat exchanger 12, main condenser 13, clean-up bed is adsorbed into valve 14, vacuum desorption valve 15, vacuum desorption condenser 16, very
Empty discharge valve 17, discharge valve 18, desorption system pressure sensor P1, clean-up bed vacuum sensor P2, desorption hot blast temperature is passed
Sensor T1, clean-up bed temperature sensor T2, condensation temperature sensor T3.
Embodiment
Recovery method is administered to the present invention with reference to the accompanying drawings and device is further described.
Embodiment 1
Recycling and administration method of the present invention by VOCs by detecting valve 1, and clean-up bed absorption valve 2, clean-up bed answers pressure valve 3, only
Change bed solution inspiration valve 4, heater 5, circulating desorption valve 6 reclaims and desorbs valve 7, vacuum desorption valve 8, clean-up bed nitrogen valve 9, only
Change bed solution suction metering valve 10, process exclusion valve 11, heat exchanger 12, main condenser 13, clean-up bed is adsorbed into valve 14, vacuum desorption valve
15, vacuum desorption condenser 16, vacuum discharge valve 17, discharge valve 18, desorption system pressure sensor P1, clean-up bed vacuum is passed
Sensor P2, desorbs hot blast temperature sensor T1, clean-up bed temperature sensor T2, condensation temperature sensor T3, absorption blower fan, desorption
The device that blower fan, vavuum pump and the process pipe being connected are constituted is realized, governance process is carried out by microcomputer automatic control system
Intelligent control.
Clean-up bed is adsorbed into valve with clean-up bed nitrogen valve 9, clean-up bed solution suction metering valve 10, clean-up bed respectively by process pipe
14th, the multiple pressure valve 3 of clean-up bed absorption valve 2, clean-up bed, one end connection of clean-up bed solution inspiration valve 4.Clean-up bed absorption valve 2
The other end is connected with VOCs detection valves 1, and the other end of the multiple pressure valve 3 of clean-up bed is connected with the other end of clean-up bed nitrogen valve 9, is purified
The other end of bed solution inspiration valve 4 is connected with one end of heater 5, and the other end of heater 5 is connected with solution induced-draught fan, desorbs hot blast
Temperature sensor T1 is arranged on the outlet conduit of heater 5, and desorption system pressure sensor P1 is located at heater 5 and solution induced-draught fan
Between pipeline on.The other end of clean-up bed solution suction metering valve 10 is connected with one end of process exclusion valve 11, vacuum desorption valve 15, only
The other end that change bed is adsorbed into valve 14 is connected with absorption blower fan, and absorption blower fan is connected with pretreatment system.Solve the another of induced-draught fan
One end with circulating desorption valve 6, recovery desorption valve 7 is held to connect, the other end and process exclusion valve 11, the heat exchange of circulating desorption valve 6
Device 12, vavuum pump connection, reclaim the other end of desorption valve 7 and one end of vacuum desorption valve 8, heat exchanger 12 are connected.Vacuum solutions
The other end of suction metering valve 8 is connected with pretreatment system.The other end of vacuum desorption valve 15 is connected with vacuum desorption condenser 16, very
The other end of sky desorption condenser 16 is connected with one end of vavuum pump, vacuum discharge valve 17.The other end of vacuum discharge valve 17 with
One end connection of discharge valve 18, the other end of discharge valve 18 is connected with heat exchanger 12, main condenser 13, heat exchanger 12 and main condenser
Device 13 is connected.Temperature sensor T2 sets clean-up bed bottom, and clean-up bed vacuum sensor P2 is arranged on clean-up bed top, condenses
Temperature sensor T3 is located at the port of export of main condenser 13.
Pass through pretreatment cooling, high efficiency filter dedusting containing volatile organic matter (VOCs) waste gas, after the pressurization of absorption blower fan
Purified bed is adsorbed into valve 14 and is blown into clean-up bed, and volatile organic matter is adsorbed by adsorbent in clean-up bed, completes environmental purification
Administer, reach that the gas of discharge standard enters ambient air, microcomputer automatic control system by clean-up bed absorption valve row 2 after purification
Valve 1 is detected by VOCs and VOCs detections are carried out, in real time the volatile organic content in the exhaust of monitoring clean-up bed, when in exhaust
Volatile organic matter starts to penetrate discharge of the volatile organic content close to environmental requirement in adsorbent in clean-up bed or exhaust
During value, microcomputer automatic control system is closed clean-up bed and adsorbed into valve 14 and clean-up bed absorption valve 2, and clean-up bed is transferred to desorption and administered
Flow reclaims organic matter；Clean-up bed is transferred to after circulating desorption governance flowchart, and microcomputer automatic control system first turns on clean-up bed suction
Attached valve 2, is then turned on clean-up bed nitrogen valve 9, and nitrogen system is blown into the isometric height to 1.5 times of volumes of clean-up bed to clean-up bed
Pure nitrogen gas, makes to form oxygen-free environment in clean-up bed, is then shut off clean-up bed absorption valve 2, clean-up bed nitrogen valve 9.Clean-up bed is inhaled
After attached valve 2, clean-up bed nitrogen valve 9 are closed, open clean-up bed solution inspiration valve 4, purification solution suction metering valve 10, process exclusion valve 11,
Circulating desorption valve 6, starts solution induced-draught fan, and circulating desorption gas constitutes closed circulant solution air-breathing by process pipe and clean-up bed
Stream；Solve after induced-draught fan start completion, desorption system pressure sensor P1 starts working, and microcomputer automatic control system is monitored in real time is
System pressure value, when pressure is negative pressure in system, microcomputer automatic control system opens desorption clean-up bed nitrogen valve 9, nitrogen system
High pure nitrogen is blown into desorption system, desorption system pressure-fired, after system pressure-fired environment is formed, heater 5 is kept
Heating agent, clean-up bed enters circulating-heating heating procedure, when organic concentration is not up to condensation recovery condition in system, circulant solution
Inspiratory flow is condensed without condenser system, reclaims organic matter energy consumption further to reduce unit, microcomputer is controlled automatically in this flow
System processed automatically adjusts the heating agent supply of heater 5 by hot blast temperature sensor T1 temperature values, and the outlet temperature of heater 5 is kept
Between 80 DEG C~120, carried out as circulating-heating heats up, the organic matter of absorption starts a large amount of volatilizations in clean-up bed adsorbent,
After organic concentration reaches recovery condition in system, circulating desorption valve 6 is closed, opens and reclaims desorption valve 7, open main condenser
13 refrigerants, organic matter is condensed into liquid in heat exchanger 12, main condenser 13 and reclaimed, and is discharged into solvent recovery containers store,
The first time for completing organic matter reclaims.When clean-up bed temperature sensor T2 temperature values rise to heater outlet temperature sensor T1
When organic concentration reaches that balance is no longer condensed in more than the 80% of temperature value, main condenser, clean-up bed circulation heating desorption+cold
Solidifying recycling and administration flow is completed, and microcomputer automatic control system closes clean-up bed solution inspiration valve 4, process exclusion valve 11, desorption recovery
Valve 7, opens vacuum desorption valve 15, vacuum desorption valve 8, opens the refrigerant of vacuum desorption condenser 16, starts vavuum pump, clean-up bed
Be transferred to vacuum desorption+condensation recovery process, at this administer recovery process in organic matter in vacuum desorption condenser 16, heat exchanger
12nd, it is condensed into liquid in main condenser 13 to be reclaimed, the organic matter of condensation passes through vacuum discharging in vacuum desorption condenser 16
Valve 17, discharge valve 18 are discharged into designated solvent returnable, complete organic matter and reclaim.When under clean-up bed temperature sensor T2 temperature values
Less than 80 DEG C of safety value is dropped to, when clean-up bed absolute pressure drops to 5~8kPa, microcomputer automatic control system closes clean-up bed
Suction metering valve 10, vacuum desorption valve 15, vacuum desorption valve 8 are solved, stops vacuum desorption condenser 16, the refrigerant of main condenser 13, stops
Only vavuum pump, is then turned on the multiple pressure valve 3 of clean-up bed, and clean-up bed returns to atmospheric pressure state by nitrogen system, and clean-up bed is reclaimed and controlled
Manage flow to complete, clean-up bed is transferred to next adsorption cleaning governance flowchart or is transferred to standby mode.Clean-up bed heating desorption+it is cold
In solidifying recovery process and vacuum desorption+condensation recycling and administration flow, microcomputer automatic control system exports temperature according to main condenser 13
Sensor T3 temperature values are spent, the refrigerant supply of main condenser 13 is automatically adjusted, condensation temperature sensor T3 temperature values are kept at 3 DEG C
~5 DEG C, condenser is avoided to freeze while water removal and condensation effect is optimized, frosting causes system condensing effect to decline；Only
Change bed desorption cycle air-flow in heating desorption+condensation recovery process and vacuum desorption+condensation recycling and administration flow and pass through heat exchange
The recovery system heat energy of device 12, saves a large amount of refrigeration costs while heating cost is greatly lowered, and possesses unit and reclaims organic
Thing integrated cost is optimized.
Above-mentioned embodiment is the explanation that recovery method and device are administered to the present invention, does not administer recovery side to the present invention
Method and device are limited.
Claims (5)
1. a kind of volatile organic matter environment protection treating recovery method, it is characterised in that：Containing volatile organic matter (VOCs) Industry Waste
Gas by VOCs by detecting valve (1) after pretreatment cooling, high efficiency filter dedusting, and clean-up bed adsorbs valve (2), and clean-up bed is multiple
Pressure valve (3), clean-up bed solution inspiration valve (4), heater (5), circulating desorption valve (6) reclaims desorption valve (7), vacuum desorption valve
(8), clean-up bed nitrogen valve (9), clean-up bed solution suction metering valve (10), process exclusion valve (11), heat exchanger (12), main condenser
(13), clean-up bed is adsorbed into valve (14), vacuum desorption valve (15), vacuum desorption condenser (16), vacuum discharge valve (17), discharging
Valve (18), desorption system pressure sensor P1, clean-up bed vacuum sensor P2 desorb hot blast temperature sensor T1, clean-up bed
Temperature sensor T2, condensation temperature sensor T3, absorption blower fan, solution induced-draught fan, vavuum pump and the process pipe composition being connected
Device carry out environment protection treating and recovery, wherein：Clean-up bed by process pipe respectively with clean-up bed nitrogen valve (9), clean-up bed
Solution suction metering valve (10), clean-up bed are adsorbed into valve (14), clean-up bed absorption valve (2), the multiple pressure valve (3) of clean-up bed, clean-up bed desorption
Enter one end connection of valve (4)；The other end of clean-up bed absorption valve (2) is connected with VOCs detection valves (1), the multiple pressure valve of clean-up bed
(3) the other end is connected with the other end of clean-up bed nitrogen valve (9), the other end and the heater (5) of clean-up bed solution inspiration valve (4)
One end connection, the other end of heater (5) connects with solution induced-draught fan, desorbs hot blast temperature sensor T1 and be arranged on heater
(5) on outlet conduit, desorption system pressure sensor P1 is located on the pipeline between heater (5) and solution induced-draught fan；Clean-up bed
The other end of solution suction metering valve (10) is connected with one end of process exclusion valve (11), vacuum desorption valve (15), and clean-up bed is adsorbed into valve
(14) the other end is connected with absorption blower fan, and absorption blower fan is connected with pretreatment system；Solve the other end and circulant solution of induced-draught fan
Inhale valve (6), reclaim one end connection of desorption valve (7), the other end and process exclusion valve (11) heat exchanger of circulating desorption valve (6)
(12), vavuum pump is connected, and reclaims the other end of desorption valve (7) and one end of vacuum desorption valve (8), heat exchanger (12) are connected；
The other end of vacuum desorption valve (8) is connected with pretreatment system；The other end of vacuum desorption valve (15) is condensed with vacuum desorption
Device (16) is connected, and the other end of vacuum desorption condenser (16) is connected with one end of vavuum pump, vacuum discharge valve (17)；Vacuum is unloaded
The other end of material valve (17) is connected with one end of discharge valve (18), the other end and heat exchanger (12), the main condenser of discharge valve (18)
Device (13) is connected, and heat exchanger (12) is connected with main condenser (13), and clean-up bed temperature sensor T2 is arranged on clean-up bed bottom, only
Change bed vacuum sensor P2 and be arranged on clean-up bed top, condensation temperature sensor T3 is located at main condenser (13) port of export；Through
Cross the industrial waste gas containing volatile organic matter of pretreatment by absorption blower fan pressurize after adsorbed through clean-up bed into valve (14) and be blown into purification
Bed, volatile organic matter is adsorbed by adsorbent in clean-up bed, is completed environmental purification and is administered, the gas of discharge standard is reached after purification
Body is discharged into ambient air by clean-up bed absorption valve (2), and microcomputer automatic control system detects that valve (1) carries out VOCs by VOCs
Detection, when volatile organic matter starts to penetrate in clean-up bed in adsorbent or exhaust volatile organic content close to ring in exhaust
During the discharge value of guaranteed request, microcomputer automatic control system closing clean-up bed, which is adsorbed into valve (14) and clean-up bed, adsorbs valve (2), only
Change bed and be transferred to circulating desorption governance flowchart recovery organic matter；Clean-up bed is transferred to after circulating desorption governance flowchart, microcomputer automatic control
System first turns on clean-up bed absorption valve (2), is then turned on clean-up bed nitrogen valve (9), nitrogen system is blown into only to clean-up bed
Change the isometric high pure nitrogen to 1.5 times of volumes of bed, make to form oxygen-free environment in clean-up bed, be then shut off clean-up bed absorption valve
(2), clean-up bed nitrogen valve (9)；After clean-up bed absorption valve (2), clean-up bed nitrogen valve (9) are closed, clean-up bed solution inspiration is opened
Valve (4), purification solution suction metering valve (10), process exclusion valve (11), circulating desorption valve (6), start solution induced-draught fan；Induced-draught fan is solved to start
Afterwards, desorption system pressure sensor P1 starts working, microcomputer automatic control system real-time monitoring system pressure value, when system internal pressure
When power is negative pressure, microcomputer automatic control system opens clean-up bed nitrogen valve (9), and nitrogen system is blown into High Purity Nitrogen into desorption system
Gas, keeps desorption system pressure-fired, after system pressure-fired environment is formed, and heater (5) heating agent, clean-up bed enters circulation and added
Hot heating procedure, when organic concentration is not up to condensation recovery condition in system, circulating desorption air-flow is without condenser system
Condensation, microcomputer automatic control system automatically adjusts heater (5) heat by hot blast temperature sensor T1 temperature values in this flow
Matchmaker's supply, heater (5) outlet temperature is maintained between 80 DEG C~120 DEG C, is carried out as circulating-heating heats up, clean-up bed is inhaled
The organic matter adsorbed in attached dose starts a large amount of volatilizations, after organic concentration reaches recovery condition in system, closes circulating desorption
Valve (6), opens and reclaims desorption valve (7), opens main condenser (13) refrigerant, organic matter is in heat exchanger (12), main condenser (13)
Inside it is condensed into liquid to be reclaimed, is discharged into the storage of designated solvent returnable, the first time for completing organic matter reclaims；Work as clean-up bed
Temperature sensor T2 temperature values rise to more than the 80% of the hot blast temperature sensor T1 temperature values of connection heater (5) outlet,
When main condenser (13) interior organic concentration is reached when balance is no longer condensed or organic concentration reaches that balance is no longer condensed, purification
Bed circulation heating desorption+condensation recycling and administration flow is completed, and microcomputer automatic control system closes clean-up bed solution inspiration valve (4), work
Skill isolating valve, (11), recovery desorption valve (7), open vacuum desorption valve (15), vacuum desorption valve (8), open vacuum desorption cold
Condenser (16) refrigerant, starts vavuum pump, and clean-up bed is transferred to vacuum desorption+condensation recovery process, and administered at this has in recovery process
Machine thing is condensed into liquid in vacuum desorption condenser (16), heat exchanger (12), main condenser (13) and reclaimed, vacuum desorption
The organic matter of condensation is discharged into designated solvent returnable by vacuum discharge valve (17), discharge valve (18) in condenser (16), complete
Reclaimed into organic matter；When clean-up bed temperature sensor T2 temperature values drop to less than 80 DEG C of safety value, clean-up bed absolute pressure
When dropping to 5~8kPa, microcomputer automatic control system closes clean-up bed solution suction metering valve (10), vacuum desorption valve (15), Vacuum solutions
Suction metering valve (8), stops vacuum desorption condenser (16), main condenser (13), stops vavuum pump, is then turned on the multiple pressure valve of clean-up bed
(3), clean-up bed returns to atmospheric pressure state by nitrogen system, and clean-up bed recycling and administration flow is completed, and clean-up bed is transferred to next
Adsorption cleaning governance flowchart is transferred to improvement standby mode.
2. a kind of volatile organic matter environment protection treating retracting device, it is characterised in that：Clean-up bed by process pipe respectively with only
Change bed nitrogen valve (9), clean-up bed solution suction metering valve (10), clean-up bed to adsorb into valve (14), clean-up bed absorption valve (2), clean-up bed
One end connection of multiple pressure valve (3), clean-up bed solution inspiration valve (4)；The other end of clean-up bed absorption valve (2) detects valve with VOCs
(1) connect, the other end of the multiple pressure valve (3) of clean-up bed is connected with the other end of clean-up bed nitrogen valve (9), clean-up bed solution inspiration valve
(4) the other end is connected with the one end of heater (5), and the other end of heater (5) is connected with solution induced-draught fan, desorbs hot blast temperature
Sensor T1 is arranged on heater (5) outlet conduit, and desorption system pressure sensor P1 is located at heater (5) and solution induced-draught fan
Between pipeline on；The other end of clean-up bed solution suction metering valve (10) and process exclusion valve (11), one end of vacuum desorption valve (15)
Connection, the other end that clean-up bed is adsorbed into valve (14) is connected with absorption blower fan, and absorption blower fan is connected with pretreatment system；Solve air draught
The other end of machine is connected with one end of circulating desorption valve (6), recovery desorption valve (7), the other end and technique of circulating desorption valve (6)
Isolating valve, (11) heat exchanger (12), vavuum pump connection, the other end of recovery desorption valve (7) and one end of vacuum desorption valve (8),
Heat exchanger (12) is connected；The other end of vacuum desorption valve (8) is connected with pretreatment system；The other end of vacuum desorption valve (15)
Connected with vacuum desorption condenser (16), the other end of vacuum desorption condenser (16) and vavuum pump, vacuum discharge valve (17)
One end is connected；The other end of vacuum discharge valve (17) is connected with one end of discharge valve (18), and the other end of discharge valve (18) is with changing
Hot device (12), main condenser (13) connection, heat exchanger (12) are connected with main condenser (13)；Clean-up bed temperature sensor T2 is set
In clean-up bed bottom, clean-up bed vacuum sensor P2 is arranged on clean-up bed top, and condensation temperature sensor T3 is located at main condenser
Device (13) port of export.
3. improvement recovery method according to claim 1, it is characterised in that：Heat energy after clean-up bed heating desorption is used to carry
High-vacuum desorption efficiency, while realizing that adsorbent cools.
4. improvement retracting device according to claim 2, it is characterised in that：Keep condensation temperature sensor T3 temperature values
At 3 DEG C~5 DEG C.
5. improvement retracting device according to claim 2, it is characterised in that：Heater (5) outlet temperature is maintained at 80 DEG C
~120 DEG C.
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