CN203725005U - Device for treating tail gas generated by electrolysis of PVB (Polyvinyl Butyral) wastewater - Google Patents
Device for treating tail gas generated by electrolysis of PVB (Polyvinyl Butyral) wastewater Download PDFInfo
- Publication number
- CN203725005U CN203725005U CN201420050818.XU CN201420050818U CN203725005U CN 203725005 U CN203725005 U CN 203725005U CN 201420050818 U CN201420050818 U CN 201420050818U CN 203725005 U CN203725005 U CN 203725005U
- Authority
- CN
- China
- Prior art keywords
- scrubbing
- absorbing
- scrubbing tower
- pvb
- tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 20
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 title abstract description 14
- 238000005868 electrolysis reaction Methods 0.000 title abstract 2
- 238000005201 scrubbing Methods 0.000 claims abstract description 51
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 42
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000741 silica gel Substances 0.000 claims abstract description 8
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 8
- 229960001866 silicon dioxide Drugs 0.000 claims abstract description 8
- 238000010521 absorption reaction Methods 0.000 claims description 19
- 238000001179 sorption measurement Methods 0.000 claims description 12
- 239000000243 solution Substances 0.000 claims description 9
- 239000012047 saturated solution Substances 0.000 claims description 8
- 239000002274 desiccant Substances 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 abstract description 44
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 abstract description 18
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract description 12
- HGBOYTHUEUWSSQ-UHFFFAOYSA-N valeric aldehyde Natural products CCCCC=O HGBOYTHUEUWSSQ-UHFFFAOYSA-N 0.000 abstract description 9
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 abstract description 8
- 229910000041 hydrogen chloride Inorganic materials 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 7
- 238000001035 drying Methods 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 abstract 1
- 239000003463 adsorbent Substances 0.000 abstract 1
- 229910052799 carbon Inorganic materials 0.000 abstract 1
- 238000000746 purification Methods 0.000 abstract 1
- 239000000460 chlorine Substances 0.000 description 8
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 7
- 229910052801 chlorine Inorganic materials 0.000 description 7
- 238000005406 washing Methods 0.000 description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 241000370738 Chlorion Species 0.000 description 1
- 238000007171 acid catalysis Methods 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000000914 phenoxymethylpenicillanyl group Chemical group CC1(S[C@H]2N([C@H]1C(=O)*)C([C@H]2NC(COC2=CC=CC=C2)=O)=O)C 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Abstract
The utility model discloses a device for treating tail gas generated by electrolysis of PVB (Polyvinyl Butyral) wastewater. The device comprises an absorbing and scrubbing tower, an induced draft fan and a chimney, wherein a scrubbing area is arranged at the lower part in the absorbing and scrubbing tower; the scrubbing area is filled with NaOH solution with concentration being greater than 5%; a drying area and an absorbing area are sequentially arranged at the upper part in the absorbing and scrubbing tower; the drying area is filled with a silica-gel drier; the absorbing area is filled with an active carbon adsorbent; a gas inlet pipe is arranged on the middle lower wall of the absorbing and scrubbing tower; a gas outlet is formed in the top wall of the absorbing and scrubbing tower and is connected with an inlet of the induced draft fan through a gas pipe; an outlet of the induced draft fan is communicated with the chimney. The device is capable of scrubbing and absorbing the tail gas and removing chlorine gas, butyraldehyde and hydrogen chloride in the tail gas; the device is excellent in purification effect; the treated gas can reach the atmospheric emission standard; the device is used for intensively completing the treatment in the scrubbing and absorbing tower; the whole device is simple and compact in structure, small in space occupation and low in operation cost.
Description
Technical field
The utility model relates to a kind of exhaust gas processing device, relates in particular to a kind of PVB wastewater electrolytic exhaust gas processing device.
Background technology
Polyvinyl butyral resin (being called for short PVB) is the product with butyraldehyde condensation under acid catalysis by polyvinyl alcohol (being called for short PVA).In existing Chemical Manufacture, can produce a kind of high-concentration acidic wastewater organic wastewater, mainly containing PVB, PVA, butyraldehyde and hydrochloric acid, after testing, the about 20000mg/L of chemical oxygen demand COD, the about 10000mg/L of chlorion, pH < 1.
Above-mentioned high-concentration acidic wastewater organic wastewater can be after COD reduces with the reducing substances of electrolytic cell pretreatment removal 90%, then carries out biochemical reaction, reclaims thereby waste water is reached the washings standard of using.
In above-mentioned electrolytic cell, the reaction occurring on plate is: 2Cl
--2e → Cl
2, simultaneously because electrolytic cell bottom is provided with aerator, in waste water, part butyraldehyde and hydrochloric acid can be by air stripping out, and the waste gas that therefore electrolytic cell produces is chlorine, butyraldehyde, hydrogen chloride and air gas mixture.This mist does not reach atmospheric emission standard, must process, and current exhaust gas processing device or be difficult to realize effective purified treatment to this mist, otherwise complex structure, cost are high.
Utility model content
The PVB wastewater electrolytic exhaust gas processing device that provides a kind of effect good and simple in structure in order to address the above problem is just provided the purpose of this utility model.
The utility model is achieved through the following technical solutions above-mentioned purpose:
PVB wastewater electrolytic exhaust gas processing device described in the utility model comprises absorption scrubbing tower, air-introduced machine and chimney, bottom in described absorption scrubbing tower is scrubbing section, it is more than 5% NaOH solution that concentration is housed in described scrubbing section, top in described absorption scrubbing tower is provided with dry section and adsorption zone successively, in described dry section, silica-gel desiccant is housed, in described adsorption zone, acticarbon is housed, the middle and lower part tower wall of described absorption scrubbing tower is provided with air inlet pipe, the top drum wall of described absorption scrubbing tower is provided with gas outlet, described gas outlet is connected with the entrance of described air-introduced machine by tracheae, the outlet of described air-introduced machine and described chimney are connected.
When work, first tail gas pass through scrubbing section, at cleaning solution---under the effect of NaOH solution, chlorine and hydrogen chloride gas are washed down, tail gas gas continues to rise through dry section, gets rid of the steam in gas phase, then enters adsorption zone, by butyraldehyde Molecular Adsorption, under the effect of air-introduced machine, enter smoke stack emission to atmosphere finally by crossing tracheae.
Further, described PVB wastewater electrolytic exhaust gas processing device also comprises circulating pump and shower nozzle, the entrance of described scrubbing section and described circulating pump is connected, described circulation delivery side of pump is connected with the entrance of described shower nozzle by liquid pipe, described shower nozzle is installed in described absorption scrubbing tower and the top that is positioned at described scrubbing section is positioned at the below of described dry section simultaneously, and described air inlet pipe is positioned at position more than described scrubbing section.Like this, tail gas, absorbing in scrubbing tower and reverse contact of NaOH solution of ejection, can be realized better clean result, and chlorine and hydrogen chloride gas are washed.
According to practical application request, described circulating pump is installed in or beyond described absorption scrubbing tower.
As preferably, described NaOH solution is saturated solution.
The beneficial effects of the utility model are:
The utility model is processed tail gas through washing and absorption (i.e. absorption), can remove chlorine, butyraldehyde and hydrogen chloride in tail gas, clean-up effect is good, gas after treatment reaches atmospheric emission standard, and concentrate in washing absorption tower and complete, whole apparatus structure is simple, compact, takes up room little, and operating cost is low; In addition, silica-gel desiccant and acticarbon are used in combination to convenient regeneration and replacing, convenient operation.
Brief description of the drawings
Fig. 1 is the structural representation of PVB wastewater electrolytic exhaust gas processing device described in the utility model, there is shown internal structure.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, PVB wastewater electrolytic exhaust gas processing device described in the utility model comprises absorption scrubbing tower 3, circulating pump 7, shower nozzle 4, air-introduced machine 10 and chimney 11, the bottom absorbing in scrubbing tower 3 is scrubbing section 1, NaOH saturated solution is housed in scrubbing section 1, the top absorbing in scrubbing tower 3 is provided with dry section 5 and adsorption zone 6 successively, in dry section 5, silica-gel desiccant is housed, in adsorption zone 6, acticarbon is housed, scrubbing section 1 is connected with the entrance of circulating pump 7, the outlet of circulating pump 7 is connected with the entrance of shower nozzle 4 by liquid pipe 8, shower nozzle 4 is installed on the top that absorbs in scrubbing tower 3 and be positioned at scrubbing section 1 and is positioned at simultaneously the below of dry section 5, circulating pump 7 is installed on and absorbs outside scrubbing tower 3, also can be installed on as required and absorb in scrubbing tower 3, the middle and lower part tower wall that absorbs scrubbing tower 3 is provided with air inlet pipe 2, air inlet pipe 2 is positioned at more than 1 position of scrubbing section, the top drum wall that absorbs scrubbing tower 3 is provided with gas outlet (unmarked in figure), gas outlet is connected with the entrance of air-introduced machine 10 by tracheae 9, the outlet of air-introduced machine 10 and chimney 11 are connected.
When work, tail gas enters and absorbs scrubbing tower 3 and first pass through scrubbing section 1 interior from air inlet pipe 2, the reverse contact of NaOH saturated solution spraying with shower nozzle 4, and NaOH saturated solution washs the chlorine in tail gas and hydrogen chloride gas get off; Tail gas gas continues to rise through dry section 5, and the silica-gel desiccant in dry section 5 is got rid of the steam in gas phase; Tail gas enters adsorption zone again, and the acticarbon in adsorption zone 6 is by the butyraldehyde Molecular Adsorption in tail gas, and the last only tail gas that the remaining overwhelming majority is air enters chimney 11 through tracheae and is disposed to atmosphere under the effect of air-introduced machine 10.
As shown in Figure 1, for the ease of monitoring and the real-time clean-up effect of controlling, can also do following improvement:
Establish thief hole at be exported in chimney 11 any one section that absorbs scrubbing tower 3, port lid can be installed or do not installed to this thief hole as required, regularly from thief hole, take out emission and analyze its composition, in the time having chlorine or hydrogen chloride gas, supplement after adding alkali (being NaOH) or the alkali absorption liquid of draining and reconfigure NaOH saturated solution, in the time also having butyraldehyde composition in discharge tail gas, open the hand-hole of dry section 5 and adsorption zone 6, check silica-gel desiccant and acticarbon, drew off regeneration or supplemented new silica-gel desiccant and acticarbon from dumping pit if lose efficacy.Above-mentioned improvement mainly according to functional requirement and definite, concrete structure all adopts conventional structure, so be not emphasis of the present utility model, does not illustrate in the drawings, does not also make concrete structure and describes.
Above-described embodiment is preferred embodiment of the present utility model, it is not the restriction to technical solutions of the utility model, such as: can be without circulating pump 7 and shower nozzle 4, directly allow tail gas also can substantially realize the function of washing chlorine or hydrogen chloride gas through NaOH saturated solution; NaOH saturated solution also can adopt the solution of more than 5% other concentration, and just clean result is slightly poor; As long as the technical scheme that can realize on the basis of above-described embodiment without creative work, all should be considered as falling within the scope of the rights protection of the utility model patent.
Claims (4)
1. a PVB wastewater electrolytic exhaust gas processing device, it is characterized in that: comprise absorption scrubbing tower, air-introduced machine and chimney, bottom in described absorption scrubbing tower is scrubbing section, it is more than 5% NaOH solution that concentration is housed in described scrubbing section, top in described absorption scrubbing tower is provided with dry section and adsorption zone successively, in described dry section, silica-gel desiccant is housed, in described adsorption zone, acticarbon is housed, the middle and lower part tower wall of described absorption scrubbing tower is provided with air inlet pipe, the top drum wall of described absorption scrubbing tower is provided with gas outlet, described gas outlet is connected with the entrance of described air-introduced machine by tracheae, the outlet of described air-introduced machine and described chimney are connected.
2. PVB wastewater electrolytic exhaust gas processing device according to claim 1, it is characterized in that: described PVB wastewater electrolytic exhaust gas processing device also comprises circulating pump and shower nozzle, the entrance of described scrubbing section and described circulating pump is connected, described circulation delivery side of pump is connected with the entrance of described shower nozzle by liquid pipe, described shower nozzle is installed in described absorption scrubbing tower and the top that is positioned at described scrubbing section is positioned at the below of described dry section simultaneously, and described air inlet pipe is positioned at position more than described scrubbing section.
3. PVB wastewater electrolytic exhaust gas processing device according to claim 2, is characterized in that: described circulating pump is installed in or beyond described absorption scrubbing tower.
4. PVB wastewater electrolytic exhaust gas processing device according to claim 1, is characterized in that: described NaOH solution is saturated solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420050818.XU CN203725005U (en) | 2014-01-26 | 2014-01-26 | Device for treating tail gas generated by electrolysis of PVB (Polyvinyl Butyral) wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420050818.XU CN203725005U (en) | 2014-01-26 | 2014-01-26 | Device for treating tail gas generated by electrolysis of PVB (Polyvinyl Butyral) wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203725005U true CN203725005U (en) | 2014-07-23 |
Family
ID=51195106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420050818.XU Expired - Lifetime CN203725005U (en) | 2014-01-26 | 2014-01-26 | Device for treating tail gas generated by electrolysis of PVB (Polyvinyl Butyral) wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203725005U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110713290A (en) * | 2018-07-13 | 2020-01-21 | 中国石油化工股份有限公司 | High-salt-content evaporation mother liquor recycling treatment system and method |
| CN113842750A (en) * | 2021-09-23 | 2021-12-28 | 中铁市政环境建设有限公司 | Carbonization pyrolysis tail gas processing apparatus |
| CN117164068A (en) * | 2023-11-02 | 2023-12-05 | 江苏丰又环境科技有限公司 | Electrocatalytic malodorous wastewater treatment device based on BDD anode |
-
2014
- 2014-01-26 CN CN201420050818.XU patent/CN203725005U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110713290A (en) * | 2018-07-13 | 2020-01-21 | 中国石油化工股份有限公司 | High-salt-content evaporation mother liquor recycling treatment system and method |
| CN113842750A (en) * | 2021-09-23 | 2021-12-28 | 中铁市政环境建设有限公司 | Carbonization pyrolysis tail gas processing apparatus |
| CN117164068A (en) * | 2023-11-02 | 2023-12-05 | 江苏丰又环境科技有限公司 | Electrocatalytic malodorous wastewater treatment device based on BDD anode |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140723 |