CN105749692A - Dry organic solvent recovery device and organic solvent desorption method - Google Patents
Dry organic solvent recovery device and organic solvent desorption method Download PDFInfo
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- CN105749692A CN105749692A CN201610117496.XA CN201610117496A CN105749692A CN 105749692 A CN105749692 A CN 105749692A CN 201610117496 A CN201610117496 A CN 201610117496A CN 105749692 A CN105749692 A CN 105749692A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40011—Methods relating to the process cycle in pressure or temperature swing adsorption
- B01D2259/40058—Number of sequence steps, including sub-steps, per cycle
- B01D2259/4006—Less than four
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/40—Further details for adsorption processes and devices
- B01D2259/40083—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption
- B01D2259/40088—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating
- B01D2259/4009—Regeneration of adsorbents in processes other than pressure or temperature swing adsorption by heating using hot gas
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Abstract
The invention relates to a dry organic solvent recovery device and an organic solvent desorption method, belonging to the technical field of waste gas adsorption. The dry organic solvent recovery device comprises a main fan, a primary main adsorber, a secondary main adsorber, a heat exchanger, a primary condenser, a secondary condenser, an ending adsorber, a circulating fan and a heater, wherein the input end of the circulating fan is connected with a nitrogen source through a pipe; the output end of the circulating fan is connected to the heater through the pipe; the heater is connected to the primary main adsorber, the secondary main adsorber and an air inlet in the upper part of the ending adsorber through the pipe; an air outlet in the upper part of the ending adsorber is connected to the input end of the circulating fan through the pipe; a steam exhaust port in the bottom part of the ending adsorber is connected to the heat exchanger through the pipe; and the output end of the secondary condenser is connected to the air inlet in the bottom part of the ending adsorber through the pipeline. Compared with an existing dry desorption technology, the device has the advantages that the equipment investment and energy consumption can be reduced; a plurality of process routes can be achieved; and the advantages of dry desorption are fully developed.
Description
Technical field
The invention belongs to waste gas adsorption technology field, be specifically related to a kind of dry method organic solvent recovery device and organic solvent desorption method.
Background technology
Along with the increasing and pay attention to day by day to environment of environmental protection subject under discussion between various countries, the domestic dynamics also increasing environment protection treating and control, the tail gas of various organic solvents is given discharge standard, and increasingly stringent.In industrial waste gas for the process of volatility organic tail gas be all through adsorbent equipment adsorb after discharge, the mode carrying out desorption after adsorbing organic exhaust gas with adsorbent equipment mainly divides two kinds, one be organic solvent after absorption, adopt noble gas by the organic solvent stripping of activated carbon adsorption out (i.e. dry method organic solvent recovery)；The second be organic solvent after absorption, adopt steam by the organic solvent stripping of activated carbon adsorption out (i.e. wet method organic solvent recovery).At present, producing, owing to dry method organic solvent way of recycling has, the advantage that waste water is few, it has also become the important way that an organic solvent reclaims, it is more to there is equipment configuration in dry method separating process process common at present, the shortcomings such as technological process is comparatively single.
Summary of the invention
The purpose of the present invention is aiming at the defect of prior art, it is provided that a kind of dry method organic solvent recovery device and organic solvent desorption method.The present invention can reduce cost of investment on existing dry method organic recovery technique basis and have kinds of processes route selection, has very strong practicality.
nullThe technical solution used in the present invention is: a kind of dry method organic solvent recovery device，Including main air blower、The main adsorber of one-level、Two grades of main adsorbers、Heat exchanger、First-stage condenser、Secondary condenser，Described main air blower input connects exhaust gas source by pipeline，Described main air blower outfan is connected to the main adsorber of described one-level respectively through pipeline、Two grades of main adsorber upper inlet port，The main adsorber of described one-level、Gas outlet, two grades of main adsorber top connects air respectively through pipeline，The main adsorber of described one-level、Two grades of main absorber bottoms steam drains are connected to heat exchanger by pipeline，Described heat exchanger is sequentially connected to first-stage condenser and secondary condenser by pipeline，Also include ending adsorber、Circulating fan、Heater，Institute's circulating fan input connects source nitrogen by pipeline，Described circulating fan outfan is connected to heater by pipeline，Described heater is connected to the main adsorber of one-level by pipeline、Two grades of main adsorbers and ending adsorber upper inlet port，Gas outlet, described ending adsorber top is connected to circulating fan input by pipeline，Described ending absorber bottoms steam drain is connected to heat exchanger by pipeline，Described secondary condenser outfan is connected to ending absorber bottoms air inlet by pipeline.
Further, the pipeline of described main air blower input is provided with valve V0；Valve V1 it is provided with between described exhaust gas source and air；It is provided with valve V2 between described main air blower and the main adsorber of one-level, the main adsorber of described one-level is provided with valve V3 with the pipeline being connected air, it is provided with valve V6 between described heater and the main adsorber of one-level, between the main adsorber of described one-level and heat exchanger, is provided with valve V7；It is provided with valve V4 between described main air blower and two grades of main adsorbers, described two grades of main adsorbers are provided with valve V5 with the pipeline being connected air, it is provided with valve V8 between described heater and two grades of main adsorbers, between described two grades of main adsorbers and heat exchanger, is provided with valve V9；It is provided with valve V10 between described heater and ending adsorber, it is provided with valve V12 between described ending adsorber and heat exchanger, it is provided with valve V11 between described circulating fan input and ending adsorber, between described ending adsorber and secondary condenser outfan, is provided with valve V13；Valve V14 it is provided with between described heat exchanger and circulating fan.
A kind of organic solvent desorption method utilizing dry method organic solvent recovery device, comprises the following steps: industrial waste gas is by after adsorber, and the volatilization gas organic solvent in activated carbon adsorption industrial waste gas in adsorber, clean gas directly discharges；Noble gas after heater via heating is sent in main adsorber and ending adsorber by circulating fan, by the organic solvent desorption of activated carbon adsorption out, the mixed steam that noble gas and organic solvent are formed enters the gas converting heat after heat exchanger and cooling, mixed steam after heat exchange enters secondary condenser after entering first-stage condenser and recirculated water heat exchange and reclaims organic solvent with deep cooling water heat exchange, gas after cooling enters through circulating fan after backing into the heat transfer of mixture gas of heat exchanger and firm desorption and returns in main adsorber and ending adsorber after heater heating, ending adsorber shifts to an earlier date one hour and stops desorption and cool down, for finishing up, so circulation.
A kind of organic solvent desorption method utilizing dry method organic solvent recovery device, comprises the following steps: industrial waste gas is by after adsorber, and the escaping gas organic solvent in activated carbon adsorption industrial waste gas in adsorber, clean gas directly discharges；Noble gas after heater via heating is sent in main adsorber by circulating fan, by the organic solvent desorption of activated carbon adsorption out, the mixed steam that noble gas and organic solvent are formed enters the gas converting heat after heat exchanger and cooling, mixed steam after heat exchange enters secondary condenser after entering first-stage condenser and recirculated water heat exchange and reclaims organic solvent with deep cooling water heat exchange, gas after cooling enters ending adsorber and finishes up, gas after ending enters through circulating fan and enters back into main adsorber entrance after heater heating, so two all after dates of circulation utilize the intermittent time individually ending adsorber to be carried out desorption.
A kind of organic solvent desorption method utilizing dry method organic solvent recovery device, comprises the following steps: industrial waste gas is by after adsorber, and the escaping gas organic solvent in activated carbon adsorption industrial waste gas in adsorber, clean gas directly discharges；Noble gas after heater via heating is sent in main adsorber by circulating fan, by the organic solvent desorption of activated carbon adsorption out, the mixed steam that noble gas and organic solvent are formed enters the gas converting heat after heat exchanger and cooling, mixed steam after heat exchange enters secondary condenser after entering first-stage condenser and recirculated water heat exchange and reclaims organic solvent with deep cooling water heat exchange, gas after cooling enters main adsorber entrance, so circulates.
Further, noble gas can be heated to 150-200 DEG C from room temperature by electricity, steam or conduction oil heat exchange mode.
Further, by detecting the oxygen concentration content in pipeline and adsorber, with the benefit chain benefit nitrogen of nitrogen valve.
The present invention compares existing dry method separating process, can not only save equipment investment and energy consumption, and can realize kinds of processes route, give full play to the superiority of dry method desorption.
Accompanying drawing explanation
Fig. 1 is present invention process flow chart.
In figure: 1-main air blower, 2-pretreatment system, the main adsorber of 3-one-level, bis-grades of main adsorbers of 4-, 5-ending adsorber, 6-circulating fan, 7-heater, 8-heat exchanger, 9-first-stage condenser, 10-secondary condenser, 11-solvent remove storage tank.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail, it is simple to be well understood to the present invention, but the present invention is not constituted restriction by them.
nullAs shown in Figure 1，One dry method organic solvent recovery device of the present invention，Including main air blower 1、The main adsorber 3 of one-level、Two grades of main adsorbers 4、Heat exchanger 8、First-stage condenser 9、Secondary condenser 10，Described main air blower 1 input connects exhaust gas source by pipeline，It is provided with pretreatment system 2 between described main air blower 1 and exhaust gas source，Described main air blower 1 outfan is connected to the main adsorber 3 of described one-level respectively through pipeline、Two grades of main adsorber 4 upper inlet port，The main adsorber 3 of described one-level、Gas outlet, two grades of main adsorber 4 top connects air respectively through pipeline，The main adsorber 3 of described one-level、Two grades of main adsorber 4 bottom row steam ports are connected to heat exchanger 8 by pipeline，Described heat exchanger 8 is sequentially connected to first-stage condenser 9 and secondary condenser 10 by pipeline，Also include ending adsorber 5、Circulating fan 6、Heater 7，Institute's circulating fan 6 input connects source nitrogen by pipeline，Described circulating fan 6 outfan is connected to heater 7 by pipeline，Described heater 7 is connected to the main adsorber 3 of one-level by pipeline、Two grades of main adsorbers 4 and ending adsorber 5 upper inlet port，Gas outlet, described ending adsorber 5 top is connected to circulating fan 6 input by pipeline，Described ending adsorber 5 bottom row steam ports is connected to heat exchanger 8 by pipeline，Described secondary condenser 10 outfan is connected to ending adsorber 5 bottom air inlet by pipeline.
In technique scheme, the pipeline of described main air blower input is provided with valve V0；Valve V1 it is provided with between described exhaust gas source and air；It is provided with valve V2 between described main air blower and the main adsorber of one-level, the main adsorber of described one-level is provided with valve V3 with the pipeline being connected air, it is provided with valve V6 between described heater and the main adsorber of one-level, between the main adsorber of described one-level and heat exchanger, is provided with valve V7；It is provided with valve V4 between described main air blower and two grades of main adsorbers, described two grades of main adsorbers are provided with valve V5 with the pipeline being connected air, it is provided with valve V8 between described heater and two grades of main adsorbers, between described two grades of main adsorbers and heat exchanger, is provided with valve V9；It is provided with valve V10 between described heater and ending adsorber, it is provided with valve V12 between described ending adsorber and heat exchanger, it is provided with valve V11 between described circulating fan input and ending adsorber, between described ending adsorber and secondary condenser outfan, is provided with valve V13；Valve V14 it is provided with between described heat exchanger and circulating fan.
As shown in Figure 1, a kind of organic solvent desorption method utilizing dry method organic solvent recovery device of the present invention, comprise the following steps: open valve V0, V2, V3, industrial waste gas is by after the main adsorber 3 of one-level, the escaping gas (i.e. organic solvent) in activated carbon adsorption industrial waste gas in the main adsorber 3 of one-level, clean gas directly discharges；nullClose valve V2、V3，Open V6、V7、V10、V12、V14，After the heating of noble gas heater via by the organic solvent desorption of activated carbon adsorption in main for one-level adsorber 3 and ending adsorber 5 out，Noble gas after heating and organic solvent form the gas converting heat after mixed steam enters heat exchanger 8 and cools down，Mixed steam after heat exchange reclaims organic solvent through secondary condenser 10 with deep cooling water heat exchange after entering back into first-stage condenser 9 and recirculated water heat exchange，The gas of cooling return first-stage condenser 9 and the heat transfer of mixture gas of firm desorption after through circulating fan 6 return to the main adsorber 3 of one-level with in ending adsorber 5，Ending adsorber 5 stops entering hot inert gas desorption and cooling down for one hour in advance，Namely V10 is closed、V12、V14，Open V11、V13，For finishing up，So circulation，Same method can desorption adsorber 4/5.
As shown in Figure 1, another kind of the present invention utilizes the organic solvent desorption method of dry method organic solvent recovery device, comprise the following steps: open valve V0, V2, V3, industrial waste gas is by after the main adsorber 3 of one-level, the escaping gas (i.e. organic solvent) in activated carbon adsorption industrial waste gas in the main adsorber 3 of one-level, clean gas directly discharges；nullClose valve V2、V3，Open V6、V7、V11、V13，After the heating of noble gas heater via by the organic solvent desorption of main for one-level adsorber 3 and interior activated carbon adsorption out，Noble gas after heating and organic solvent form the gas converting heat after mixed steam enters heat exchanger 8 and cools down，Mixed steam after heat exchange reclaims organic solvent through secondary condenser 10 with deep cooling water heat exchange after entering back into first-stage condenser 9 and recirculated water heat exchange，The gas of cooling returns to through circulating fan 6 and carries out absorption ending in ending adsorber 5，So after two cycles (3/4 each desorption is once) of circulation, ending adsorber 5 is carried out independent desorption，Namely when not affecting the absorption of main adsorber 3/4，Open V10、V12、V14，Only enter in ending adsorber 5 after noble gas is heated，Gas converting heat after noble gas after heating and organic solvent gaseous mixture air inlet heat exchanger 8 and cooling，After mixed steam after heat exchange enters back into first-stage condenser 9 and recirculated water heat exchange, secondary condenser 10 reclaims organic solvent with deep cooling water heat exchange，The gas of cooling returns in ending adsorber 5 through circulating fan 6 after returning first-stage condenser 6 and the heat transfer of mixture gas of firm desorption，Ending adsorber can be carried out independent desorption，So circulation.
As shown in Figure 1, another kind of the present invention utilizes the organic solvent desorption method of dry method organic solvent recovery device, comprise the following steps: open valve V0, V2, V3, industrial waste gas is by after the main adsorber 3 of one-level, the escaping gas (i.e. organic solvent) in activated carbon adsorption industrial waste gas in the main adsorber 3 of one-level, clean gas directly discharges；Close valve V2, V3, V10, V11, V12, V13, open V6, V7, V14, after the heating of noble gas heater via by the organic solvent desorption of main for one-level adsorber 3 and interior activated carbon adsorption out, noble gas after heating and organic solvent form the gas converting heat after mixed steam enters heat exchanger 8 and cools down, mixed steam after heat exchange reclaims organic solvent through secondary condenser 10 with deep cooling water heat exchange after entering back into first-stage condenser 9 and recirculated water heat exchange, the gas of cooling returns in the main adsorber 3 of main one-level through circulating fan 6, so circulation, same method can the main adsorber 4 of desorption two grades.Above-mentioned adsorber can be adsorption box, adsorption tanks.Above-mentioned activated carbon is granule charcoal, NACF.
The content that this specification is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (7)
- null1. a dry method organic solvent recovery device，Including main air blower、The main adsorber of one-level、Two grades of main adsorbers、Heat exchanger、First-stage condenser、Secondary condenser，Described main air blower input connects exhaust gas source by pipeline，Described main air blower outfan is connected to the main adsorber of described one-level respectively through pipeline、Two grades of main adsorber upper inlet port，The main adsorber of described one-level、Gas outlet, two grades of main adsorber top connects air respectively through pipeline，The main adsorber of described one-level、Two grades of main absorber bottoms steam drains are connected to heat exchanger by pipeline，Described heat exchanger is sequentially connected to first-stage condenser and secondary condenser by pipeline，It is characterized in that: also include ending adsorber、Circulating fan、Heater，Institute's circulating fan input connects source nitrogen by pipeline，Described circulating fan outfan is connected to heater by pipeline，Described heater is connected to the main adsorber of one-level by pipeline、Two grades of main adsorbers and ending adsorber upper inlet port，Gas outlet, described ending adsorber top is connected to circulating fan input by pipeline，Described ending absorber bottoms steam drain is connected to heat exchanger by pipeline，Described secondary condenser outfan is connected to ending absorber bottoms air inlet by pipeline.
- 2. dry method organic solvent recovery device according to claim 1, it is characterised in that: the pipeline of described main air blower input is provided with valve V0；Valve V1 it is provided with between described exhaust gas source and air；It is provided with valve V2 between described main air blower and the main adsorber of one-level, the main adsorber of described one-level is provided with valve V3 with the pipeline being connected air, it is provided with valve V6 between described heater and the main adsorber of one-level, between the main adsorber of described one-level and heat exchanger, is provided with valve V7；It is provided with valve V4 between described main air blower and two grades of main adsorbers, described two grades of main adsorbers are provided with valve V5 with the pipeline being connected air, it is provided with valve V8 between described heater and two grades of main adsorbers, between described two grades of main adsorbers and heat exchanger, is provided with valve V9；It is provided with valve V10 between described heater and ending adsorber, it is provided with valve V12 between described ending adsorber and heat exchanger, it is provided with valve V11 between described circulating fan input and ending adsorber, between described ending adsorber and secondary condenser outfan, is provided with valve V13；Valve V14 it is provided with between described heat exchanger and circulating fan.
- 3. the organic solvent desorption method of the dry method organic solvent recovery device that a kind utilizes described in claim 1, it is characterized in that: comprise the following steps: industrial waste gas is by after adsorber, the volatilization gas organic solvent in activated carbon adsorption industrial waste gas in adsorber, clean gas directly discharges；Noble gas after heater via heating is sent in main adsorber and ending adsorber by circulating fan, by the organic solvent desorption of activated carbon adsorption out, the mixed steam that noble gas and organic solvent are formed enters the gas converting heat after heat exchanger and cooling, mixed steam after heat exchange enters secondary condenser after entering first-stage condenser and recirculated water heat exchange and reclaims organic solvent with deep cooling water heat exchange, gas after cooling enters through circulating fan after backing into the heat transfer of mixture gas of heat exchanger and firm desorption and returns in main adsorber and ending adsorber after heater heating, ending adsorber shifts to an earlier date one hour and stops desorption and cool down, for finishing up, so circulation.
- 4. the organic solvent desorption method of the dry method organic solvent recovery device that a kind utilizes described in claim 1, it is characterized in that: comprise the following steps: industrial waste gas is by after adsorber, the escaping gas organic solvent in activated carbon adsorption industrial waste gas in adsorber, clean gas directly discharges；Noble gas after heater via heating is sent in main adsorber by circulating fan, by the organic solvent desorption of activated carbon adsorption out, the mixed steam that noble gas and organic solvent are formed enters the gas converting heat after heat exchanger and cooling, mixed steam after heat exchange enters secondary condenser after entering first-stage condenser and recirculated water heat exchange and reclaims organic solvent with deep cooling water heat exchange, gas after cooling enters ending adsorber and finishes up, gas after ending enters through circulating fan and enters back into main adsorber entrance after heater heating, so two all after dates of circulation utilize the intermittent time individually ending adsorber to be carried out desorption.
- 5. the organic solvent desorption method of the dry method organic solvent recovery device that a kind utilizes described in claim 1, it is characterized in that: comprise the following steps: industrial waste gas is by after adsorber, the escaping gas organic solvent in activated carbon adsorption industrial waste gas in adsorber, clean gas directly discharges；Noble gas after heater via heating is sent in main adsorber by circulating fan, by the organic solvent desorption of activated carbon adsorption out, the mixed steam that noble gas and organic solvent are formed enters the gas converting heat after heat exchanger and cooling, mixed steam after heat exchange enters secondary condenser after entering first-stage condenser and recirculated water heat exchange and reclaims organic solvent with deep cooling water heat exchange, gas after cooling enters main adsorber entrance, so circulates.
- 6. a kind of organic solvent desorption method utilizing dry method organic solvent recovery device according to any one of claim 35, it is characterised in that: noble gas can be heated to 150-200 DEG C from room temperature by electricity, steam or conduction oil heat exchange mode.
- 7. a kind of organic solvent desorption method utilizing dry method organic solvent recovery device according to any one of claim 35, it is characterised in that: by detecting the oxygen concentration content in pipeline and adsorber, with the benefit chain benefit nitrogen of nitrogen valve.
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| CN201610117496.XA CN105749692A (en) | 2016-03-02 | 2016-03-02 | Dry organic solvent recovery device and organic solvent desorption method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110434027A (en) * | 2019-08-30 | 2019-11-12 | 张铁江 | A kind of organic solvent recovery device for liquid crystal display panel manufacturing automatic double surface gluer |
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| CN103585854A (en) * | 2013-10-29 | 2014-02-19 | 嘉园环保股份有限公司 | Technology for recovering and processing organic exhaust gas by activated carbon adsorption and N2 desorption |
| CN103877827A (en) * | 2014-02-25 | 2014-06-25 | 浙江工业大学 | Organic waste gas adsorbing recovery device and process |
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| CN203264523U (en) * | 2013-06-14 | 2013-11-06 | 泉州市天龙环境工程有限公司 | Recovery device of paint spray organic solvent |
| CN103585854A (en) * | 2013-10-29 | 2014-02-19 | 嘉园环保股份有限公司 | Technology for recovering and processing organic exhaust gas by activated carbon adsorption and N2 desorption |
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