CN105903311B - Gas absorber and the system and method for recycling low-boiling-point organic compound - Google Patents

Gas absorber and the system and method for recycling low-boiling-point organic compound Download PDF

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Publication number
CN105903311B
CN105903311B CN201610399602.8A CN201610399602A CN105903311B CN 105903311 B CN105903311 B CN 105903311B CN 201610399602 A CN201610399602 A CN 201610399602A CN 105903311 B CN105903311 B CN 105903311B
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China
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gas
condenser
adsorption
absorber
boiling
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CN201610399602.8A
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Chinese (zh)
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CN105903311A (en
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王岗
李屹
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黎城蓝天燃气开发有限公司
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/02Separation 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
    • B01D53/04Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407Constructional details of adsorbing systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D5/00Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0003Condensation of vapours; Recovering volatile solvents by condensation by using heat-exchange surfaces for indirect contact between gases or vapours and the cooling medium
    • B01D5/0006Coils or serpentines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/02Separation 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
    • B01D53/04Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • B01D53/0407Constructional details of adsorbing systems
    • B01D53/0438Cooling or heating systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2259/00Type of treatment
    • B01D2259/40Further details for adsorption processes and devices
    • B01D2259/40083Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
    • B01D2259/40088Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
    • B01D2259/4009Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas

Abstract

The present invention provides a kind of gas absorber and the system and method for recycling low-boiling-point organic compound, the gas absorber and the system and method for recycling low-boiling-point organic compound can be used for separating and collecting the low boiling point volatile organic matter in gas, and above system mainly includes adsorption treatment unit, recovery unit, exhaust gas pretreatment unit, water system and control system.Adsorption treatment unit has more than two gas absorbers, in operation, each gas absorber alternately adsorption operation or desorption operation.Organic matter is first adsorbed in activated carbon fiber by the technique, then recycling of liquefying is discharged after carbon fiber by desorption operation, compared with existing activated carbon fiber adsorbent equipment in the market, has the rate of recovery high, low energy consumption, easy to operate feature.Recyclable device operating cost can be effectively reduced, there is good social benefit and environmental benefit.

Description

Gas absorber and the system and method for recycling low-boiling-point organic compound

Technical field

This invention relates generally to a kind of air purifying process, in particular to a kind of gas absorber and recycling The system and method for low-boiling-point organic compound.

Background technique

In recent years, the attention with society to air treating, activated carbon fiber adsorption plant have widely in many industries Using.Since specific operating condition is different, device configuration and the process route adjustment that producer uses are less, cause many low boiling points organic Object recycling yield is low, energy consumption is high.

Above- mentioned information are only used for reinforcing the understanding to background of the invention, therefore it disclosed in the background technology part It may include the information not constituted to the prior art known to persons of ordinary skill in the art.

Summary of the invention

A series of concept of reduced forms is introduced in Summary, this will in the detailed description section into One step is described in detail.The key that this part of the disclosure is not meant to attempt to limit technical solution claimed is special It seeks peace essential features, does not mean that the protection scope for attempting to determine technical solution claimed more.

A primary object of the present invention is to overcome at least one defect of the above-mentioned prior art, provides a kind of desorption effect The higher gas absorber of rate.

Another main purpose of the invention is to overcome at least one defect of the above-mentioned prior art, and providing one kind can be real The exhaust treatment system and method for the recycling low-boiling-point organic compound of existing high efficiente callback low-boiling-point organic compound.

For achieving the above object, the present invention adopts the following technical scheme:

According to an aspect of the invention, there is provided a kind of gas absorber, including cabinet and adsorption column;The cabinet is in Tubular, the cabinet are equipped with exhaust gas inlet, waste gas outlet, the first steam port, the outlet of desorption object and condensate outlet;The cabinet Interior to be equipped at least one described adsorption column, it is peripheral space that the space outside the adsorption column is located in the cabinet;The absorption Column includes skeleton, silk screen and adsorption layer, and the skeleton has the gas outlet positioned at the intake section of outer peripheral surface and positioned at shaft end, described The silk screen is fixed in the periphery of skeleton intake section, and the adsorption layer wound on the silk screen is acf layer, the adsorption column Gas outlet connect the waste gas outlet, first steam port connects the gas outlet of the adsorption column;The cabinet also has Second steam port, second steam port connect the peripheral space, and second steam port is set to the top of the box;Institute When stating gas absorber and carrying out desorption operation, first start the second steam port gas supply, later first steam port with it is described Alternately gas supply carries out desorption operation to second steam port.

According to an embodiment of the present invention, wherein being first steam port and second steam port with an air supply pipe Supply saturated vapor, be provided with drain valve, automatic pressure regulator and pressure sensor on the air supply pipe, the pressure sensor and The automatic pressure regulator is connected to a pressure controller, controls first steam port and second steam port for air pressure with this Power.

According to an embodiment of the present invention, wherein first steam port is externally provided with the first control valve;Described second steams Steam ports is externally provided with the second control valve;First control valve and second control valve are coupled with the pressure controller, with This controls the steam pressure of first steam port and second steam port supply respectively, and tank pressure control exists in desorption 80kpa-100kpa。

According to an embodiment of the present invention, wherein also having an air intake on the cabinet, the air intake is connect A logical air hose, the air hose sucks air by a filter, and is supplied using a blower to the air intake;With institute Air intake is stated between the adsorption operation of the gas absorber and desorption operation, emptying operation is dried.

According to another aspect of the present invention, a kind of exhaust treatment system for recycling low-boiling-point organic compound is provided, there are two tools The above foregoing gas absorber, in operation, each gas absorber alternately adsorption operation or desorption operation;Institute Stating exhaust treatment system further includes recovery unit;The recovery unit includes first-stage condenser, secondary condenser, gas-liquid separation Device, liquid quantizer and gas condenser;The desorption object outlet of each gas absorber in turn switches on cold to the level-one Condenser, secondary condenser, gas-liquid separator and liquid quantizer, the liquid quantizer can connect a regenerant efferent duct;Institute The condensate outlet for stating gas absorber is accessed from secondary condenser entrance;The gas vent of the gas-liquid separator connects the gas The liquid of condenser body, the gas condenser recycling is switched to the liquid quantizer, and the gas of the gas condenser is then The exhaust gas inlet for being switched to the gas absorber is reprocessed.

According to an embodiment of the present invention, useless with low-boiling-point organic compound wherein also having exhaust gas pretreatment unit Gas first enters back into each gas absorber through the exhaust gas pretreatment unit, and the exhaust gas pretreatment unit includes buffering filler Tower, fire arrester, filter and/or heat exchanger;The buffering packed tower removes moisture and sediment in removing exhaust gas;The filter bottom Portion, which connects, liquid recovery tube, and the liquid return pipe is switched to the liquid separator;The exhaust gas is reduced with the heat exchanger Temperature, to improve each gas absorber adsorption efficiency.

According to an embodiment of the present invention, wherein the first-stage condenser and secondary condenser are the cooling condensation of water Device, cooling water tube is first switched to the secondary condenser, then connects the first-stage condenser by the secondary condenser; And the cooling water return pipe of the secondary condenser is connected outward by the first-stage condenser.

According to an embodiment of the present invention, wherein the gas condenser coil condenser, the gas condenser will By gas cooling to subzero 20 to subzero 80 degrees Celsius, flow control is within 2m/ seconds.

According to an embodiment of the present invention, wherein the first-stage condenser is pipe bundle condenser, the secondary condenser For spiral plate condenser;An exhaust pipe for being connected to the gas condenser is equipped at the top of the liquid quantizer.

According to another aspect of the present invention, a kind of method for recycling low-boiling-point organic compound is provided, application is foregoing Recycle the exhaust treatment system of low-boiling-point organic compound;Each gas absorber is divided into first group of gas absorber and second group of gas Body absorber, it is characterised in that include the following steps:

Exhaust gas containing low-boiling-point organic compound enters the exhaust treatment system through air supply pipe;

Exhaust gas containing low-boiling-point organic compound is passed through first group of gas absorber and carries out adsorption operation;

First group of gas absorber operation adsorption operation after a certain period of time, switches to second group of gas absorber Run adsorption operation;

First group of gas absorber and second group of gas absorber alternately adsorption operation;

After first group of gas absorber or second group of gas absorber adsorption operation, carry out next adsorption operation it Before, desorption and drying operation are carried out, is desorbed in operation, first starts the second steam port gas supply, later first steam port Replace gas supply with second steam port and carries out desorption operation;Dry air, which is passed through, after the completion of desorption operation carries out cooling and drying work Industry;

The gas generated in the drying operation directly empties.

As shown from the above technical solution, gas absorber of the invention and the system and method for recycling low-boiling-point organic compound It advantage and has the active effect that

When gas absorber in above-described embodiment carries out desorption operation, first start the second steam port gas supply certain time, The first steam port gas supply carries out desorption operation later, can so remain to avoid exhaust gas in peripheral space.When activated carbon fibre is inhaled When attached layer organic matter is close to or up to saturation, the heating of Activated charcoal of saturated vapor is utilized.It is adsorbed organic for activated carbon fibre Object provides heat, improves its kinetic energy and gets rid of the constraint of adsorbent, and then is released by stripping, and form mist with water vapour Absorber is discharged to complete to be desorbed, in this way, residue can be reduced at the end of absorption under the promotion of water vapour in gas-liquid mixture The amount of incondensable gas, and desorption operation in reduce steam in incondensable gas amount so that incondensable gas influence reduce, So as to improve the efficiency for being desorbed and adsorbing.

The system and method for the recycling low-boiling-point organic compound provided in the embodiment of the present invention, are first adsorbed on activity for organic matter In carbon fiber, then by recycling after desorption operation discharge, compared with existing activated carbon fiber adsorbent equipment in the market, there is recycling Rate is high, and low energy consumption, easy to operate feature.Recyclable device operating cost can be effectively reduced, have good social benefit and Environmental benefit.

Detailed description of the invention

Consider following the following detailed description of the embodiment of the present invention in conjunction with the accompanying drawings, various targets of the invention, Feature and advantage will become apparent.Attached drawing is only exemplary diagram of the invention, is not necessarily drawn to scale. In the accompanying drawings, same appended drawing reference always shows same or similar component.Wherein:

Fig. 1 is a kind of exhaust treatment system of recycling low-boiling-point organic compound shown according to an illustrative embodiments, is shown The composition flow diagram of wherein adsorption treatment unit is gone out.

Fig. 2 is a kind of exhaust treatment system of recycling low-boiling-point organic compound shown according to an illustrative embodiments, is shown The composition flow diagram of wherein recovery unit is gone out.

Fig. 3 is a kind of exhaust treatment system of recycling low-boiling-point organic compound shown according to an illustrative embodiments, is shown The composition flow diagram of wherein exhaust gas pretreatment unit is gone out.

Fig. 4 is a kind of the schematic diagram of the section structure of absorber shown according to an illustrative embodiments.

Wherein, the reference numerals are as follows:

1, absorber;11, exhaust gas inlet;12, waste gas outlet;13, the first steam port;14, desorption object outlet;15, lime set Outlet;16, air intake;17, cabinet;18, adsorption column;181, skeleton;182, silk screen;183, adsorption layer;184, intake section; 185, gas outlet;19, the second steam port;2, air supply pipe;21, drain valve;22, automatic pressure regulator;23, pressure sensor;24, One control valve;25, the second control valve;3, flue gas leading;31, packed tower is buffered;32, fire arrester;33, filter;34, heat exchanger; 4, air hose;41, filter;42, drying air fan;43, drying control valve;5, recovery tube;51, first-stage condenser;52, second level is cold Condenser;53, gas-liquid separator;54, liquid quantizer;55, gas condenser;56, it is layered slot;57, muffler;58, cooling water Supply pipe;59, cooling water return pipe.

Specific embodiment

Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes Formula is implemented, and is not understood as limited to embodiment set forth herein;On the contrary, thesing embodiments are provided so that the present invention will Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical attached drawing in figure Label indicates same or similar structure, thus the detailed description that will omit them.

Fig. 1 is a kind of exhaust treatment system of recycling low-boiling-point organic compound shown according to an illustrative embodiments, is shown The composition flow diagram of wherein adsorption treatment unit is gone out.Fig. 2 is a kind of recycling shown according to an illustrative embodiments The exhaust treatment system of low-boiling-point organic compound is shown in which the composition flow diagram of recovery unit.Fig. 3 is according to an example A kind of exhaust treatment system of recycling low-boiling-point organic compound shown in property embodiment, is shown in which exhaust gas pretreatment unit Form flow diagram.

As shown in Figure 1 to Figure 3, the embodiment of the present invention provides a kind of exhaust treatment system for recycling low-boiling-point organic compound, can For separating and collecting the low boiling point volatile organic matter in gas, mainly locate in advance including adsorption treatment unit, recovery unit, exhaust gas Manage unit, water system and control system.Adsorption treatment unit has more than two gas absorbers 1, and in operation, each gas is inhaled The alternately adsorption operation of adnexa 1 or desorption operation.

For the following defect of existing absorber: dissociate in the more situation of small water droplet if exhaust gas contains, the suction of existing absorber Attached column will be saturated quickly, and adsorption efficiency will be greatly reduced.When desorption, if incoagulable air and organic steam mixing, whole It will become difficult to condense, the rate of recovery reduces.For this purpose, the present invention provides the specific embodiment of following absorber.

Fig. 4 is a kind of the schematic diagram of the section structure of absorber shown according to an illustrative embodiments.As shown in figure 4, Present invention implementation provides a kind of gas absorber 1, mainly includes cabinet 17 and adsorption column 18.There can be 1-12 in each cabinet 17 A adsorption column 18.Cabinet 17 is cylindrical in shape, and cabinet 17 is equipped with exhaust gas inlet 11, waste gas outlet 12, the first steam port 13, desorption object Outlet 14 and condensate outlet 15;It is equipped at least one adsorption column 18 in cabinet 17, the space outside adsorption column 18 is located in cabinet 17 For peripheral space.In specific embodiment, peripheral space fixing fabric structure is in lesser range, such as the control of diameter difference is in 100- 150mm can reduce the amount of remaining incondensable gas at the end of absorption, and reduce incondensable gas in steam in desorption operation Amount so that incondensable gas influence reduce, so as to improve the efficiency for being desorbed and adsorbing.

Adsorption column 18 is annular, and adsorption column 18 mainly includes skeleton 181, silk screen 182 and adsorption layer 183.Skeleton 181 is optional It is selected as stainless steel material.Skeleton 181 has the gas outlet 185 positioned at the intake section 184 of outer peripheral surface and positioned at shaft end, intake section 184 periphery is fixed with silk screen 182, and the adsorption layer 183 wound on silk screen 182 is acf layer, the outlet of adsorption column 18 Mouth 185 connects waste gas outlets 12, and the first steam port 13 connects the gas outlet 185 of adsorption column 18.Industrial waste gas containing organic substance, When passing through bed of activated carbon fiber, organic matter therein can be adsorbed by Carbon fibe, be retained, so that exhaust gas be made to be purified.Wherein 18 carbon fiber thickness of adsorption column is between 25cm-35cm, higher than traditional 20cm.

Also there is the second steam port 19, the second steam port 19 connects peripheral space, the setting of the second steam port 19 on cabinet 17 In 17 top of cabinet;Also there is an elbow in second steam port 19, which extends along the tangential direction of the adsorption column 18, with Convenient for inner space can be entered in tangential, it is therefore an objective to vapor be allowed gradually to fill full peripheral space after steam enters cabinet 17. When gas absorber 1 carries out desorption operation, first start the second steam port 19 gas supply certain time, the first steam port 13 supplies later Desorption operation is carried out, can so be remained to avoid exhaust gas in peripheral space.Two steam ports, which can also oppositely replace, to be supplied, with this Improve the attached efficiency of glue.When 183 organic matter of carbon fiber adsorption and catalytic combustion layer is close to or up to saturation, is heated and lived using saturated vapor Property charcoal.Heat is provided for the adsorbed organic matter of activated carbon fibre, improve its kinetic energy and gets rid of the constraint of adsorbent, and then is blown It is de- to release, and misty gas-liquid mixture is formed with water vapour, under the promotion of water vapour, absorber 1 is discharged.

It is that the first steam port 13 and the second steam port 19 supply saturated vapor with an air supply pipe 2, is provided on air supply pipe 2 thin Water valve 21, automatic pressure regulator 22 and pressure sensor 23, pressure sensor 23 and automatic pressure regulator 22 are connected to pressure control Device controls 19 supply gas pressure of the first steam port 13 and the second steam port with this.First steam port 13 is externally provided with the first control valve 24; Second steam port 19 is externally provided with the second control valve 25;First control valve 24 and the second control valve 25 are coupled with pressure controller, Control the steam pressure of the first steam port 13 and the supply of the second steam port 19 respectively with this, Steam pressure control exists in desorption 80kpa-100kpa.Water vapour flow velocity can be improved in biggish steam pressure, and the heat transfer for reducing activated carbon fiber and water vapour is imitated Air is blown out cabinet 17 before absorbent core starts desorption by rate, water vapour.

The basic role of drain valve 21 is that condensed water, air and the carbon dioxide gas in vapour system are discharged as early as possible; It is automatically prevented from the leakage of steam to the maximum extent simultaneously.

Steam reducing valve is the flow that medium is adjusted using the aperture of the intracorporal opening and closing element of control valve, by the pressure of medium It reduces, while adjusting the aperture of opening and closing element by the effect of downstream pressure, keep downstream pressure in a certain range, in import It in the continually changing situation of pressure, keeps outlet pressure in the range of setting, life thereafter is protected to produce utensil.

As shown in Fig. 1 and Fig. 4, also there is an air intake 16, air intake 16 connects an air hose 4, empty on cabinet 17 Tracheae 4 sucks air by a filter 41, may be selected to carry out remote auto control with a drying control valve 43.And it is dry using one Dry blower 42 supplies air intake 16;With air intake 16 between the adsorption operation of gas absorber 1 and desorption operation, into The dry emptying operation of row.There is biggish water content and higher temperature by the carbon fiber adsorption and catalytic combustion layer 183 of desorption, it cannot Adsorption operations again are directly carried out, need that it is dried and cools down.Using drying air fan 42, it is passed through to bed of activated carbon fiber Room temperature pure air can effectively purge out the water in adsorption layer 183, and cool down to bed of activated carbon fiber, make temperature Degree reduces, and guarantees that activated carbon fibre replys higher adsorption capacity.

As shown in the table, it is activated carbon fiber nature parameters:

As shown in Fig. 2, main of recovery unit provided in an embodiment of the present invention will include first-stage condenser 51, secondary condenser 52, gas-liquid separator 53, liquid quantizer 54, gas condenser 55 and layering slot 56.The desorption object of each gas absorber 1 exports 14 in turn switch on to first-stage condenser 51, secondary condenser 52, gas-liquid separator 53 and liquid quantizer 54, liquid quantizer 54 can connect a regenerant efferent duct;The condensate outlet 15 of gas absorber 1 is accessed from 52 entrance of secondary condenser;Gas-liquid separation The gas vent of device 53 connects gas condenser 55, and the liquid that gas condenser 55 recycles is switched to liquid quantizer 54, gas The exhaust gas inlet 11 that the gas of condenser 55 is then switched to gas absorber 1 is reprocessed.

According to a specific embodiment, wherein first-stage condenser 51 and secondary condenser 52 are selected as the cooling condensation of water Device, cooling water tube 58 is first switched to secondary condenser 52, then connects first-stage condenser 51 by secondary condenser 52;And two The cooling water return pipe 59 of grade condenser 52 is connected outward by first-stage condenser 51.First-stage condenser 51 is pipe bundle condenser, Secondary condenser 52 is spiral plate condenser;An exhaust pipe for being connected to gas condenser 55 is equipped at the top of liquid quantizer 54. The cooling water temperature that cooling water tube 58 is supplied is selected as 5 degrees centigrades.

55 coil condenser of gas condenser, gas condenser 55 take the photograph the gas cooling passed through to subzero 20 to subzero 80 Family name's degree, flow control is within 2m/ seconds.Such technique, which is avoided, condenses to 0 degree Celsius hereinafter, can be with for a large amount of water vapour It avoids freezing while reaching improving the rate of recovery and energy-efficient purpose.It is coil form inside cryocooler, coil pipe can basis Actual needs selects more parallel connections, and gas is walked in coil pipe, and gas moves towards from the bottom up, and outer pipe is dry ice or other coolants.

Main technological features are, the mixture that will be discharged in above-mentioned desorption operation, at the heat exchange by condensers at different levels After reason, most gas is condensed into liquid.If the organic solvent of recycling cannot be miscible with water, gravity point can be passed through Layer, organic solvent is separated, can be directly or after purification for producing;If recovered solvent is miscible with water, need Special separating treatment is carried out, realizes organic solvent recycling.

As shown in figure 3, the exhaust gas with low-boiling-point organic compound first enters back into each gas absorber through exhaust gas pretreatment unit 1, it can mainly include buffering packed tower 31, fire arrester 32, filter 33 and heat exchanger 34 in 3 the initial segment of flue gas leading.Buffer filler Tower 31 removes moisture and sediment in removing exhaust gas;33 bottom of filter, which is connected, liquid recovery tube 5, and liquid return pipe is switched to liquid point From device;The temperature of exhaust gas is reduced with heat exchanger 34, gas can be cooled to 10 degrees Celsius hereinafter, reducing steam and coagulating by heat exchanger 34 Tie gas content.To improve each 1 adsorption efficiency of gas absorber.Flue gas leading 3 can also have the access tube there are two types of gas, such as one Kind is the exhaust gas containing organic matter, and another kind is the exhaust gas containing low-boiling-point organic compound.Two kinds of gases can be controlled respectively by control valve Access amount.

A method of recycling low-boiling-point organic compound, the exhaust treatment system of application recycling low-boiling-point organic compound;Each gas Body absorber 1 divides for first group of gas absorber 1 and second group of gas absorber 1, includes the following steps:

Exhaust gas containing low-boiling-point organic compound enters exhaust treatment system through air supply pipe 2;

Exhaust gas containing low-boiling-point organic compound is passed through first group of gas absorber 1 and carries out adsorption operation;

First group of gas absorber 1 runs adsorption operation after a certain period of time, switches to second group of operation of gas absorber 1 and inhales Attached operation;

First group of gas absorber 1 and second group of gas absorber 1 alternately adsorption operation;

After first group of gas absorber 1 or second group of 1 adsorption operation of gas absorber, before carrying out next adsorption operation, Desorption and drying operation are carried out, is desorbed in operation, the second steam port 19 gas supply is first started, the first steam port 13 and second steams later Alternately gas supply carries out desorption operation to steam ports 19;Dry air, which is passed through, after the completion of desorption operation carries out cooling and drying operation;

When absorption, gas enters absorption casing 17 from side, passes through adsorption column 18, upward from the channel among adsorption column 18 It is discharged through waste gas outlet 12.

When desorption, the waste gas outlet 12 of 18 top of adsorption column closes (exhaust gas inlet 11, air intake 16 are also switched off), steam Into absorber cabinet 17, steam and the organic matter being desorbed out export 14 by the desorption object of side and enter condensation link.

When dry, dry wind enters from the entrance of side, across adsorption column 18 from the waste gas outlet 12 above adsorption column 18 Outflow.

The gas generated in desorption operation enters recovery unit and carries out organic matter recycling;Gas may be selected straight in drying operation Run in sky, to improve emptying and cooling efficiency.

The determination of adsorption time

According to practical condition, clearly discharge exhaust gas high concentration period and low concentration period.Utilize VOC detector The mean concentration in the waste gas inlet high concentration period is tested, data are recorded;It is high that organic matter is tested at absorption casing exhaust Concentration-time section breakthrough concentration, using the standby point of absorber 1 as start time, until when row's mouth concentration is more than air inlet mean concentration 5%, The time span is 1 time of break-through of absorber, records time of break-through.In operation operation, adsorption time can be set as omiting Less than time of break-through.

The determination of desorption time

The determination of non-molten aqueous solvent recycling desorption time, can simply be debugged using visual method.Box steam valve is desorbed Opening time is start time, examines desorption 5 visor internal solvent of recovery tube and waste water layering is led to a phenomenon, be desorbed one section There is de-laminating solvent to be largely discharged after time, and then gradually decrease, until suspending in visor without layering or oil droplet, goes completely into water Phase, the time span can be approximately effective desorption time.In addition, can be after desorption mixed liquor fluid is steady, every 0.5min dosage Cylinder is sampled from sample tap, is stood after sampling, liquid layered situation is observed, to determine desorption time.

The determination of molten aqueous solvent recycling desorption time is desorbed so that box steam valve opening time is desorbed as start time 6min or so after beginning starts to sample from sample tap after mixed solution water flow stationary is desorbed, and every 0.5min takes a sample, continuously takes Sample is no less than 20 groups, and sample is carried out content of organics analysis after desorption, determines desorption time under this steam flow.

It if necessary to change steam flow, is then sampled according to above-mentioned same method and determines desorption time, determined more afterwards de- Sub conditione.

The determination of drying time

In conjunction with the experience of air test run, after testing the starting of drying air fan 42,1 bed temperature of absorber is reduced to assigned temperature When time span, which is the efficient drying time, directly progress program setting.

Tank liquor position is layered to adjust

Upper layer light material density p 1, lower layer's heavier feeds density p 2.

ρ 1 (X-Z)+ρ 2Z=ρ 2Y

Z=(ρ 2Y- ρ 1X) ÷ (ρ 2- ρ 1)

Light material outlet height X can generally be adjusted layering slot by a small margin at the middle and upper levels, and upper layer lightweight object is made after adjusting Thickness of feed layer (X-Z), which maintains 5-10cm, to be advisable.

The exhaust treatment system and method for the recycling low-boiling-point organic compound of the embodiment of the present invention, have rate of recovery height, energy consumption Low, easy to operate feature.Recyclable device operating cost can be effectively reduced, there is good social benefit and environmental benefit.

Although disclosing the present invention referring to some embodiments, before without departing substantially from the scope of the present invention and scope It puts, a variety of variants and modifications can be carried out to the embodiment described.It will therefore be appreciated that the invention is not limited to illustrated Embodiment, protection scope should by appended claims content and its equivalence structure and scheme limit.

Claims (10)

1. a kind of gas absorber, including cabinet and adsorption column;
The cabinet is cylindrical in shape, and the cabinet is equipped with exhaust gas inlet, waste gas outlet, the first steam port, the outlet of desorption object and coagulates Liquid outlet;At least one described adsorption column is equipped in the cabinet, the space being located at outside the adsorption column in the cabinet is outer All spaces, the exhaust gas inlet are switched to the peripheral space, and the desorption object outlet is switched to the peripheral space;
The adsorption column includes skeleton, silk screen and adsorption layer, and the skeleton has positioned at the intake section of outer peripheral surface and positioned at shaft end Gas outlet, the fixed silk screen in the periphery of the skeleton intake section, the adsorption layer wound on the silk screen is activated carbon fiber The waste gas outlet is connected in the gas outlet of layer, the adsorption column, and first steam port connects the gas outlet of the adsorption column;Its It is characterized in that,
The cabinet also has the second steam port, and second steam port connects the peripheral space, and second steam port is set It is placed in the top of the box, also there is an elbow in second steam port, which prolongs along the tangential direction of the adsorption column It stretches, it, can be in tangentially into the peripheral space after steam enters the peripheral space;The gas absorber carries out desorption work When industry, first start the second steam port gas supply certain time, the first steam port gas supply carries out desorption operation, steam later Condensation link is entered by the desorption object outlet of side with the organic matter being desorbed out.
2. gas absorber as described in claim 1, which is characterized in that also there is an air intake on the cabinet, it is described Air intake connects an air hose, and the air hose sucks air by a filter, and is entered using a blower to the air Confession gas;With the air intake between the adsorption operation of the gas absorber and desorption operation, emptying is dried and makees Industry.
3. a kind of exhaust treatment system for recycling low-boiling-point organic compound, which is characterized in that have it is more than two such as claims 1 or Gas absorber described in 2, each gas absorber alternately adsorption operation or desorption operation;The exhaust treatment system It further include recovery unit;
The recovery unit includes first-stage condenser, secondary condenser, gas-liquid separator, liquid quantizer and gas condenser; The desorption object outlet of each gas absorber is in turn switched on to the first-stage condenser, secondary condenser, gas-liquid separator With liquid quantizer, the liquid quantizer can connect a regenerant efferent duct;The condensate outlet of the gas absorber is from two Grade condenser inlet access;The gas vent of the gas-liquid separator connects the gas condenser, and the gas condenser returns The liquid of receipts is switched to the liquid quantizer, and the gas of the gas condenser is then switched to the exhaust gas of the gas absorber Import is reprocessed.
4. the exhaust treatment system of recycling low-boiling-point organic compound as claimed in claim 3, which is characterized in that be with an air supply pipe First steam port and second steam port supply saturated vapor, are provided with drain valve, automatic Regulation on the air supply pipe Valve and pressure sensor, the pressure sensor and the automatic pressure regulator are connected to a pressure controller, are controlled with this described First steam port and the second steam port supply gas pressure.
5. the exhaust treatment system of recycling low-boiling-point organic compound as claimed in claim 3, which is characterized in that first steam Mouth is externally provided with the first control valve;Second steam port is externally provided with the second control valve;First control valve and second control Valve processed is coupled with pressure controller, controls the vapour pressure of first steam port and second steam port supply respectively with this Power, be desorbed raising middle flask body in Steam pressure control in 80kpa-100kpa.
6. the exhaust treatment system of recycling low-boiling-point organic compound as claimed in claim 3, which is characterized in that also have exhaust gas pre- Processing unit, the exhaust gas with low-boiling-point organic compound first enter back into each gas absorber through the exhaust gas pretreatment unit, The exhaust gas pretreatment unit includes buffering packed tower, fire arrester, filter and/or heat exchanger;The buffering packed tower removal Moisture and sediment in exhaust gas;The filter bottom connection has liquid recovery tube, and the liquid recovery tube is switched to liquid point From device;To reduce the temperature of the exhaust gas by the heat exchanger, the heat exchanger by gas cool to 10 degrees Celsius hereinafter, with Improve each gas absorber adsorption efficiency.
7. the exhaust treatment system of recycling low-boiling-point organic compound as claimed in claim 3, which is characterized in that the level-one condensation Device and secondary condenser are water cooled condenser, and cooling water tube is first switched to the secondary condenser, then by described Secondary condenser connects the first-stage condenser;And the cooling water return pipe of the secondary condenser passes through the first-stage condenser It connects outward.
8. the exhaust treatment system of recycling low-boiling-point organic compound as claimed in claim 7, which is characterized in that the gas condensation Device is coil condenser, the gas condenser by the gas cooling passed through to subzero 20 to subzero 80 degrees Celsius, flow control Within 2m/ seconds.
9. such as the exhaust treatment system of the described in any item recycling low-boiling-point organic compounds of claim 3 to 8, which is characterized in that institute Stating first-stage condenser is pipe bundle condenser, and the secondary condenser is spiral plate condenser;It is equipped at the top of the liquid quantizer One is connected to the exhaust pipe of the gas condenser.
10. a kind of method for recycling low-boiling-point organic compound, application such as the described in any item recycling low boiling points of claim 3 to 9 The exhaust treatment system of organic matter;Each gas absorber is divided into first group of gas absorber and second group of gas absorber, It is characterized by comprising following steps:
Exhaust gas containing low-boiling-point organic compound enters the exhaust treatment system through air supply pipe;
Exhaust gas containing low-boiling-point organic compound is passed through first group of gas absorber and carries out adsorption operation;
First group of gas absorber operation adsorption operation after a certain period of time, switches to second group of gas absorber operation Adsorption operation;
First group of gas absorber and second group of gas absorber alternately adsorption operation;
After first group of gas absorber or second group of gas absorber adsorption operation, before carrying out next adsorption operation, into Row desorption and drying operation, are desorbed in operation, first start second steam port gas supply, later first steam port with it is described Alternately gas supply carries out desorption operation to second steam port;Dry air, which is passed through, after the completion of desorption operation carries out cooling and drying operation;
The gas generated in the drying operation directly empties.
CN201610399602.8A 2016-06-07 2016-06-07 Gas absorber and the system and method for recycling low-boiling-point organic compound CN105903311B (en)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1676197A (en) * 2005-01-04 2005-10-05 华南理工大学 Active carbon fiber fixed bed continuous adsorption and desorption apparatus
CN1748835A (en) * 2004-09-18 2006-03-22 宁波海曙洁源气体处理工程有限公司 Method and process flow for recovering organic matter component from organic exhaust gas
CN2796806Y (en) * 2005-06-10 2006-07-19 楚建堂 Adsorption recovery device of organic waste gas
CN201135846Y (en) * 2007-12-24 2008-10-22 延乃峰 Organic waste gas cleaning and recovering device
CN101293165A (en) * 2008-01-15 2008-10-29 青岛华世洁环保科技有限公司 High-efficiency energy-saving activated carbon fiber organic waste gas recycling system
CN102921242A (en) * 2012-10-19 2013-02-13 中国石油化工股份有限公司 Multi-phase multi-component waste gas treatment equipment, multi-component waste gas treatment method and application
CN103463928A (en) * 2013-09-11 2013-12-25 中节能天辰(北京)环保科技有限公司 Method and device for adsorbing and recovering organic waste gas
JP2014147863A (en) * 2013-01-31 2014-08-21 Toyobo Co Ltd Gas treatment system and gas treatment method

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1748835A (en) * 2004-09-18 2006-03-22 宁波海曙洁源气体处理工程有限公司 Method and process flow for recovering organic matter component from organic exhaust gas
CN1676197A (en) * 2005-01-04 2005-10-05 华南理工大学 Active carbon fiber fixed bed continuous adsorption and desorption apparatus
CN2796806Y (en) * 2005-06-10 2006-07-19 楚建堂 Adsorption recovery device of organic waste gas
CN201135846Y (en) * 2007-12-24 2008-10-22 延乃峰 Organic waste gas cleaning and recovering device
CN101293165A (en) * 2008-01-15 2008-10-29 青岛华世洁环保科技有限公司 High-efficiency energy-saving activated carbon fiber organic waste gas recycling system
CN102921242A (en) * 2012-10-19 2013-02-13 中国石油化工股份有限公司 Multi-phase multi-component waste gas treatment equipment, multi-component waste gas treatment method and application
JP2014147863A (en) * 2013-01-31 2014-08-21 Toyobo Co Ltd Gas treatment system and gas treatment method
CN103463928A (en) * 2013-09-11 2013-12-25 中节能天辰(北京)环保科技有限公司 Method and device for adsorbing and recovering organic waste gas

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