CN104289076A - Water-washing purification system continuous operation water supply and discharge device - Google Patents

Water-washing purification system continuous operation water supply and discharge device Download PDF

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Publication number
CN104289076A
CN104289076A CN201310296774.9A CN201310296774A CN104289076A CN 104289076 A CN104289076 A CN 104289076A CN 201310296774 A CN201310296774 A CN 201310296774A CN 104289076 A CN104289076 A CN 104289076A
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CN
China
Prior art keywords
water
valve
shut
catch basin
organic matter
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Pending
Application number
CN201310296774.9A
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Chinese (zh)
Inventor
林易成
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CHENGYUAN ENVIRONMENT TECHNOLOGY Inc TAIWAN
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CHENGYUAN ENVIRONMENT TECHNOLOGY Inc TAIWAN
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Priority to CN201310296774.9A priority Critical patent/CN104289076A/en
Publication of CN104289076A publication Critical patent/CN104289076A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a water-washing purification system continuous operation water supply and discharge device. According to the invention, a first water storage tank and a second water storage tank are connected in parallel at a circulation water supply pipe of a mist sprayer, so that the first water storage tank and the second water storage tank alternatively store clear water and a water solution comprising volatile organic matter. The mist sprayer can spray mist continuously, so that a purification process can be performed continuously. When the concentration of the volatile organic matter in the cyclically sprayed water solution reaches a preset value, circulation water needed by the mist sprayer is supplied by the other water storage tank, and the previous water storage tank storing the water solution discharges the stored water solution under a condition that the volatile organic matter is not diluted. Therefore, a problem of diluting the water solution comprising high-concentration volatile organic matter during the discharge process of prior art is solved. With the device, the water solution comprising high-concentration volatile organic matter is not diluted during the discharge process.

Description

The water supply and sewage device of rinsing type cleaning system continued operation
Technical field
The present invention is the water supply and sewage device about the continued operation of a kind of rinsing type cleaning system, espespecially two catch basins are arranged in parallel the periodical feeding pipe in fine spraying unit, and make two catch basins alternately accumulate containing the aqueous solution of volatile organic matter and the design of clear water.
Background technology
Containing water-soluble volatile organic matter in the gas flow to be purified that industrial production processing procedure produces, usually the straight rinsing type cleaning system 10b shown in horizontal type rinsing type cleaning system 10a as shown in Figure 1 or Fig. 2 first can be utilized to be purified, follow-up incineration or adsorption desorption purified treatment are carried out to the volatile organic matter be not cleaned; Wherein, this rinsing type cleaning system 10a, 10b are at least provided with fine spraying unit 12a, a 12b in gas flow to be purified passage 11a, 11b inside, water smoke washing face is formed by means of this fine spraying unit 12a, 12b, and by this water smoke face of washing, the water-soluble volatile organic matter contained by the gas flow to be purified passed through is washed out, the washings containing volatile organic matter then drop down onto bottom this gas flow to be purified passage 11a, 11b; In addition; this rinsing type cleaning system 10a, 10b can arrange condenser 13a, a 13b in this gas flow to be purified passage 11a, 11b inside usually further; utilize condensation to be condensed out by the water-soluble volatile organic matter contained by the gas flow to be purified passed through, the condensate water containing volatile organic matter then drops down onto bottom this gas flow to be purified passage 11a, 11b.
Secondary person, this rinsing type cleaning system 10a, 10b is this fine spraying unit 12a still relatively, 12b is linked with feed pipe 21a, 21b, and usually by this feed pipe 21a, the another end of 21b is linked to this gas flow to be purified passage 11a, bottom 11b, and in this feed pipe 21a, 21b is provided with circulating pump 22a, 22b, cause the aqueous solution containing volatile organic matter (comprising washings and condensate water) to circulate spray and allow the concentration of volatile organic matter increase gradually, another this gas flow to be purified passage 11a relatively, drainpipe 23a is linked with bottom 11b, 23b and filling pipe 24a, 24b, when the volatile organic matter concentration of the aqueous solution reaches the critical value of setting (aqueous solution of excessive concentration can volatile organic matter cannot be washed out and produce run through phenomenon), then this drainpipe 23a is borrowed, 23b discharges the aqueous solution and by this filling pipe 24a, 24b supplements clear water, make this rinsing type cleaning system 10a, 10b recovers the effect of water washing cleaning, but, because this existing water supply and sewage device carries out the program of discharging the aqueous solution and supplementary clear water simultaneously, make the aqueous solution originally containing high concentration volatile organic matter be added clear water in the process of discharging diluted, for follow-up, volatile organic matter is reclaimed the impact that the program re-used has negative sense in the aqueous solution of discharging.
Summary of the invention
For solving the problem that the aqueous solution containing high concentration volatile organic matter can dilute by prior art in discharge process, the invention provides the water supply and sewage device of a kind of rinsing type cleaning system continued operation, it has effect that the aqueous solution containing high concentration volatile organic matter can not dilute in discharge process.
The technical solution adopted for the present invention to solve the technical problems is:
The water supply and sewage device of a kind of rinsing type cleaning system continued operation, comprise: a fine spraying unit, be arranged at a gas flow to be purified channel interior, water smoke washing face is formed by means of this fine spraying unit, and by this water smoke face of washing, the water-soluble volatile organic matter contained by the gas flow to be purified passed through is washed out, the aqueous solution containing volatile organic matter then drops down onto this gas flow to be purified channel bottom; One feed pipe, links this fine spraying unit and this gas flow to be purified channel bottom, and this feed pipe is provided with circulating pump and concentration detecting device; Two catch basins, first catch basin and the second catch basin are arranged in parallel in this feed pipe, and the water intake end of this first catch basin is provided with first enters water shut-off valve, the water intake end of this second catch basin is provided with second and enters water shut-off valve, separately the water side of this first catch basin is provided with the first water outlet shut-off valve, the water side of this second catch basin is provided with the second water outlet shut-off valve; Two drainpipes, are linked to this first catch basin by the first row water pipe being provided with the first draining shut-off valve, and the second row water pipe being provided with the second draining shut-off valve is linked to this second catch basin; Two filling pipes, are linked to this first catch basin by the first filling pipe being provided with the first moisturizing shut-off valve, and the second filling pipe being provided with the second moisturizing shut-off valve is linked to this second catch basin; Whereby, this first catch basin and this second catch basin alternately accumulate the aqueous solution and clear water that contain volatile organic matter, allow this fine spraying unit not interrupt spraying water smoke and continuing to carry out decontamination procedure.
In addition, replacing of the aqueous solution and clear water containing volatile organic matter accumulated by this first catch basin and this second catch basin, the open and close of respectively this shut-off valve are utilized to be controlled, when under the situation of being in the normal state, order accumulated catch basin containing the volatile organic matter aqueous solution enter water shut-off valve and water outlet shut-off valve is opened, all the other respectively this shut-off valve closedowns, cause this feed pipe and the catch basin accumulated containing the volatile organic matter aqueous solution to form passage circulate and spray, allow this fine spraying unit lasting sprinkling water smoke carry out decontamination procedure, but, when this concentration detecting device detect circulation spray the aqueous solution contained by volatile organic matter concentration reach setting value time, namely switching state is entered, and by the catch basin accumulated containing the volatile organic matter aqueous solution enter water shut-off valve and water outlet shut-off valve cuts out, and order originally accumulation clear water catch basin enter water shut-off valve and water outlet shut-off valve is opened, this feed pipe is caused to form with the catch basin originally accumulating clear water the passage circulating and spray, this fine spraying unit is allowed not interrupt spraying water smoke and continuing to carry out decontamination procedure, originally the aqueous solution accumulated discharged by the draining shut-off valve that linked drainpipe then first opened by the catch basin of the accumulation aqueous solution, and draining shut-off valve is closed after aqueous solution row light, then the moisturizing shut-off valve of the filling pipe linked is opened, and supply rear closedown moisturizing shut-off valve in clear water, recover two catch basins alternately to accumulate containing the aqueous solution of volatile organic matter and the normality situation of clear water.
Moreover arrange a controller further, this controller links this concentration detecting device and each this shut-off valve, and automatically controls the open and close of respectively this shut-off valve according to the detection signal of this concentration detecting device.Separately, further one condenser is set in this gas flow to be purified channel interior, and utilizing condensation to be condensed out by the water-soluble volatile organic matter contained by the gas flow to be purified passed through, the aqueous solution containing volatile organic matter then drops down onto this gas flow to be purified channel bottom.But this concentration detecting device is arranged at water side or the backwater end of this feed pipe.
The invention has the beneficial effects as follows, it has effect that the aqueous solution containing high concentration volatile organic matter can not dilute in discharge process.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the water supply and sewage apparatus structure schematic diagram of existing horizontal type rinsing type cleaning system.
Fig. 2 is the water supply and sewage apparatus structure schematic diagram of existing straight rinsing type cleaning system.
Fig. 3 is that the invention process is in the structural representation of horizontal type rinsing type cleaning system.
Fig. 4 is that the invention process is in the structural representation of straight rinsing type cleaning system.
Number in the figure illustrates:
10a horizontal type rinsing type cleaning system
The straight rinsing type cleaning system of 10b
11a, 11b gas flow to be purified passage
12a, 12b fine spraying unit
13a, 13b condenser
21a, 21b feed pipe
22a, 22b circulating pump
23a, 23b drainpipe
24a, 24b filling pipe
30 feed pipes
31 circulating pumps
32 concentration detecting devices
40a first catch basin
40b second catch basin
41a first enters water shut-off valve
41b second enters water shut-off valve
42a first water outlet shut-off valve
42b second water outlet shut-off valve
50a first row water pipe
51a first draining shut-off valve
50b second row water pipe
51b second draining shut-off valve
60a first filling pipe
61a first moisturizing shut-off valve
60b second filling pipe
61b second moisturizing shut-off valve
70 controllers
Detailed description of the invention
First, refer to shown in Fig. 3, the first embodiment of the present invention is be implemented on horizontal type rinsing type cleaning system 10a, comprise: a fine spraying unit 12a, be arranged at a gas flow to be purified passage 11a inner, form water smoke washing face by means of this fine spraying unit 12a, and washed out by the water-soluble volatile organic matter contained by the gas flow to be purified passed through by this water smoke face of washing, the aqueous solution containing volatile organic matter then drops down onto bottom this gas flow to be purified passage 11a; One feed pipe 30, links bottom this fine spraying unit 12a and this gas flow to be purified passage 11a, and this feed pipe 30 is provided with circulating pump 31 and concentration detecting device 32, and this concentration detecting device 32 is arranged at the water side of this feed pipe 30 or backwater end all can; Two catch basin 40a, 40b, first catch basin 40a and the second catch basin 40b is arranged in parallel in this feed pipe 30, and the water intake end of this first catch basin 40a is provided with first enters water shut-off valve 41a, the water intake end of this second catch basin 40b is provided with second and enters water shut-off valve 41b, separately the water side of this first catch basin 40a is provided with the first water outlet shut-off valve 42a, the water side of this second catch basin 40b is provided with the second water outlet shut-off valve 42b; Two drainpipe 50a, 50b, are linked to this first catch basin 40a by the first row water pipe 50a being provided with the first draining shut-off valve 51a, and the second row water pipe 50b being provided with the second draining shut-off valve 51b is linked to this second catch basin 40b; Two filling pipe 60a, 60b, are linked to this first catch basin 40a by the first filling pipe 60a being provided with the first moisturizing shut-off valve 61a, and the second filling pipe 60b being provided with the second moisturizing shut-off valve 61b is linked to this second catch basin 40b; In addition, further one condenser 13a is set in this gas flow to be purified passage 11a inside, and utilizing condensation to be condensed out by the water-soluble volatile organic matter contained by the gas flow to be purified passed through, the aqueous solution containing volatile organic matter then drops down onto bottom this gas flow to be purified passage 11a; Whereby, this first catch basin 40a and this second catch basin 40b alternately accumulates the aqueous solution and clear water that contain volatile organic matter, allows this fine spraying unit 12a not interrupt spraying water smoke and continuing to carry out decontamination procedure.
Then, refer to shown in Fig. 4, the second embodiment of the present invention is be implemented on straight rinsing type cleaning system 10b, comprise: a fine spraying unit 12b, be arranged at a gas flow to be purified passage 11b inner, form water smoke washing face by means of this fine spraying unit 12b, and washed out by the water-soluble volatile organic matter contained by the gas flow to be purified passed through by this water smoke face of washing, the aqueous solution containing volatile organic matter then drops down onto bottom this gas flow to be purified passage 11b; One feed pipe 30, links bottom this fine spraying unit 12b and this gas flow to be purified passage 11b, and this feed pipe 30 is provided with circulating pump 31 and concentration detecting device 32, and this concentration detecting device 32 is arranged at the water side of this feed pipe 30 or backwater end all can; Two catch basin 40a, 40b, first catch basin 40a and the second catch basin 40b is arranged in parallel in this feed pipe 30, and the water intake end of this first catch basin 40a is provided with first enters water shut-off valve 41a, the water intake end of this second catch basin 40b is provided with second and enters water shut-off valve 41b, separately the water side of this first catch basin 40a is provided with the first water outlet shut-off valve 42a, the water side of this second catch basin 40b is provided with the second water outlet shut-off valve 42b; Two drainpipe 50a, 50b, are linked to this first catch basin 40a by the first row water pipe 50a being provided with the first draining shut-off valve 51a, and the second row water pipe 50b being provided with the second draining shut-off valve 51b is linked to this second catch basin 40b; Two filling pipe 60a, 60b, are linked to this first catch basin 40a by the first filling pipe 60a being provided with the first moisturizing shut-off valve 61a, and the second filling pipe 60b being provided with the second moisturizing shut-off valve 61b is linked to this second catch basin 40b; In addition, further one condenser 13b is set in this gas flow to be purified passage 11b inside, and utilizing condensation to be condensed out by the water-soluble volatile organic matter contained by the gas flow to be purified passed through, the aqueous solution containing volatile organic matter then drops down onto bottom this gas flow to be purified passage 11b; Whereby, this first catch basin 40a and this second catch basin 40b alternately accumulates the aqueous solution and clear water that contain volatile organic matter, allows this fine spraying unit 12b not interrupt spraying water smoke and continuing to carry out decontamination procedure.
Based on above-mentioned formation, this the first catch basin 40a and this second catch basin 40b accumulate the aqueous solution and clear water containing volatile organic matter alternately, the open and close of each this shut-off valve 41a, 41b, 42a, 42b, 51a, 51b, 61a, the 61b of utilization are controlled; Or a controller 70 can be set further, this controller 70 links this concentration detecting device 32 and each this shut-off valve 41a, 41b, 42a, 42b, 51a, 51b, 61a, 61b, and automatically controls the open and close of respectively this shut-off valve 41a, 41b, 42a, 42b, 51a, 51b, 61a, 61b according to the detection signal of this concentration detecting device 32.Wherein, when under the situation of being in the normal state, the water shut-off valve 41a (or 41b) that enters of the catch basin 40a (or 40b) that order has been accumulated containing the volatile organic matter aqueous solution opens with water outlet shut-off valve 42a (or 42b), respectively this shut-off valve 41b (or 41a), 42b (or 42a), 51a, 51b, 61a, 61b close for all the other, cause this feed pipe 30 and the catch basin 40a (or 40b) accumulated containing the volatile organic matter aqueous solution to form passage circulate and spray, allow this fine spraying unit 12a (or 12b) lasting sprinkling water smoke carry out decontamination procedure; but, when this concentration detecting device 32 detect circulation spray the aqueous solution contained by volatile organic matter concentration reach setting value time, namely switching state is entered, and the water shut-off valve 41a (or 41b) that enters of the catch basin 40a (or 40b) accumulated containing the volatile organic matter aqueous solution is closed with water outlet shut-off valve 42a (or 42b), and the water shut-off valve 41b (or 41a) that enters that the catch basin 40b (or 40a) of clear water is accumulated in order originally opens with water outlet shut-off valve 42b (or 42a), this feed pipe 30 is caused to form with the catch basin 40b (or 40a) originally accumulating clear water the passage circulating and spray, this fine spraying unit 12a (or 12b) is allowed not interrupt spraying water smoke and continuing to carry out decontamination procedure, originally the draining shut-off valve 51a (or 51b) that the catch basin 40a (or 40b) of the accumulation aqueous solution then first opens the drainpipe 50a (or 50b) linked discharges the aqueous solution accumulated, and draining shut-off valve 51a (or 51b) is closed after aqueous solution row light, then the moisturizing shut-off valve 61a (or 61b) of the filling pipe 60a (or 60b) linked is opened, and supply rear closedown moisturizing shut-off valve 61a (or 61b) in clear water, recover two catch basins alternately to accumulate containing the aqueous solution of volatile organic matter and the normality situation of clear water.
Be with, the present invention is the periodical feeding pipe 30 be arranged in parallel by the first catch basin 40a and the second catch basin 40b in fine spraying unit 12a (or 12b), and make this first catch basin 40a and this second catch basin 40b alternately accumulate containing the aqueous solution of volatile organic matter and clear water, this fine spraying unit 12a (or 12b) is allowed not interrupt spraying water smoke and continuing to carry out decontamination procedure, and when contained by the aqueous solution sprayed when circulating, volatile organic matter concentration reaches setting value, be change to provide recirculated water needed for fine spraying unit 12a (or 12b) by another catch basin 40b (or 40a), originally the catch basin 40a (or 40b) of the accumulation aqueous solution then volatile organic matter concentration can not be discharged under the situation of diluting the aqueous solution accumulated, and effect that the aqueous solution had containing high concentration volatile organic matter can not dilute in discharge process.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
In sum, the present invention is in structural design, use practicality and cost benefit, meet completely needed for industry development, and the structure disclosed also is have unprecedented innovative structure, there is novelty, creativeness, practicality, meet the regulation of Invention patent requirement, therefore mention application in accordance with the law.

Claims (5)

1. a water supply and sewage device for rinsing type cleaning system continued operation, is characterized in that, comprising:
One fine spraying unit, be arranged at a gas flow to be purified channel interior, water smoke washing face is formed by means of this fine spraying unit, and by this water smoke face of washing, the water-soluble volatile organic matter contained by the gas flow to be purified passed through is washed out, the aqueous solution containing volatile organic matter then drops down onto this gas flow to be purified channel bottom;
One feed pipe, links this fine spraying unit and this gas flow to be purified channel bottom, and this feed pipe is provided with circulating pump and concentration detecting device;
Two catch basins, first catch basin and the second catch basin are arranged in parallel in this feed pipe, and the water intake end of this first catch basin is provided with first enters water shut-off valve, the water intake end of this second catch basin is provided with second and enters water shut-off valve, separately the water side of this first catch basin is provided with the first water outlet shut-off valve, the water side of this second catch basin is provided with the second water outlet shut-off valve;
Two drainpipes, are linked to this first catch basin by the first row water pipe being provided with the first draining shut-off valve, and the second row water pipe being provided with the second draining shut-off valve is linked to this second catch basin;
Two filling pipes, are linked to this first catch basin by the first filling pipe being provided with the first moisturizing shut-off valve, and the second filling pipe being provided with the second moisturizing shut-off valve is linked to this second catch basin;
Whereby, this first catch basin and this second catch basin alternately accumulate the aqueous solution and clear water that contain volatile organic matter, allow this fine spraying unit not interrupt spraying water smoke and continuing to carry out decontamination procedure.
2. the water supply and sewage device of rinsing type cleaning system according to claim 1 continued operation, it is characterized in that, replacing of the aqueous solution and clear water containing volatile organic matter accumulated by described first catch basin and this second catch basin, the open and close of respectively this shut-off valve are utilized to be controlled, when under the situation of being in the normal state, order accumulated catch basin containing the volatile organic matter aqueous solution enter water shut-off valve and water outlet shut-off valve is opened, all the other respectively this shut-off valve closedowns, this feed pipe and the catch basin accumulated containing the volatile organic matter aqueous solution is caused to form the passage circulating and spray, allow this fine spraying unit continue to spray water smoke and carry out decontamination procedure, but, when this concentration detecting device detect circulation spray the aqueous solution contained by volatile organic matter concentration reach setting value time, namely switching state is entered, and by the catch basin accumulated containing the volatile organic matter aqueous solution enter water shut-off valve and water outlet shut-off valve cuts out, and order originally accumulation clear water catch basin enter water shut-off valve and water outlet shut-off valve is opened, this feed pipe is caused to form with the catch basin originally accumulating clear water the passage circulating and spray, this fine spraying unit is allowed not interrupt spraying water smoke and continuing to carry out decontamination procedure, originally the aqueous solution accumulated discharged by the draining shut-off valve that linked drainpipe then first opened by the catch basin of the accumulation aqueous solution, and draining shut-off valve is closed after aqueous solution row light, then the moisturizing shut-off valve of the filling pipe linked is opened, and supply rear closedown moisturizing shut-off valve in clear water, recover two catch basins alternately to accumulate containing the aqueous solution of volatile organic matter and the normality situation of clear water.
3. the water supply and sewage device of rinsing type cleaning system according to claim 2 continued operation, it is characterized in that, one controller is set further, this controller links this concentration detecting device and each this shut-off valve, and automatically controls the open and close of respectively this shut-off valve according to the detection signal of this concentration detecting device.
4. the water supply and sewage device of the rinsing type cleaning system continued operation according to claim 1,2 or 3, it is characterized in that, further one condenser is set in this gas flow to be purified channel interior, and utilizing condensation to be condensed out by the water-soluble volatile organic matter contained by the gas flow to be purified passed through, the aqueous solution containing volatile organic matter then drops down onto this gas flow to be purified channel bottom.
5. the water supply and sewage device of rinsing type cleaning system according to claim 4 continued operation, is characterized in that, described concentration detecting device is arranged at water side or the backwater end of this feed pipe.
CN201310296774.9A 2013-07-16 2013-07-16 Water-washing purification system continuous operation water supply and discharge device Pending CN104289076A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310296774.9A CN104289076A (en) 2013-07-16 2013-07-16 Water-washing purification system continuous operation water supply and discharge device

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Application Number Priority Date Filing Date Title
CN201310296774.9A CN104289076A (en) 2013-07-16 2013-07-16 Water-washing purification system continuous operation water supply and discharge device

Publications (1)

Publication Number Publication Date
CN104289076A true CN104289076A (en) 2015-01-21

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007060141A1 (en) * 2005-11-24 2007-05-31 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method for producing oxygen, from air, particularly using an electrochemical cell with ceramic membrane, with control means for continuous production
CN201064678Y (en) * 2007-06-28 2008-05-28 贵阳铝镁设计研究院 System for clearing cyclic utilization sewage containing coal ash
CN101537311A (en) * 2009-04-27 2009-09-23 广州环发环保工程有限公司 Biological purification method for light-concentration volatile mixed organic exhaust gas
CN102358203A (en) * 2011-09-13 2012-02-22 徐良善 Self-powered device of electric automobile
CN202356008U (en) * 2011-09-29 2012-08-01 中国石油化工集团公司 Purification device of acidic gas in process for preparing ethylene by ethanol dehydration
CN102886194A (en) * 2011-07-21 2013-01-23 天津渤大硫酸工业有限公司 Sulphur melting odor removing absorbing device
CN103007673A (en) * 2013-01-17 2013-04-03 天津开发区渤海东大药业有限公司 Comprehensive recovery treater and method for pharmaceutical benzoic acid process tail gas

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007060141A1 (en) * 2005-11-24 2007-05-31 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method for producing oxygen, from air, particularly using an electrochemical cell with ceramic membrane, with control means for continuous production
CN201064678Y (en) * 2007-06-28 2008-05-28 贵阳铝镁设计研究院 System for clearing cyclic utilization sewage containing coal ash
CN101537311A (en) * 2009-04-27 2009-09-23 广州环发环保工程有限公司 Biological purification method for light-concentration volatile mixed organic exhaust gas
CN102886194A (en) * 2011-07-21 2013-01-23 天津渤大硫酸工业有限公司 Sulphur melting odor removing absorbing device
CN102358203A (en) * 2011-09-13 2012-02-22 徐良善 Self-powered device of electric automobile
CN202356008U (en) * 2011-09-29 2012-08-01 中国石油化工集团公司 Purification device of acidic gas in process for preparing ethylene by ethanol dehydration
CN103007673A (en) * 2013-01-17 2013-04-03 天津开发区渤海东大药业有限公司 Comprehensive recovery treater and method for pharmaceutical benzoic acid process tail gas

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Application publication date: 20150121