CN204637962U - A kind of Phosphine processing device - Google Patents
A kind of Phosphine processing device Download PDFInfo
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- CN204637962U CN204637962U CN201520317109.8U CN201520317109U CN204637962U CN 204637962 U CN204637962 U CN 204637962U CN 201520317109 U CN201520317109 U CN 201520317109U CN 204637962 U CN204637962 U CN 204637962U
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- tower
- absorbing liquid
- gas
- tower body
- processing device
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- Gas Separation By Absorption (AREA)
Abstract
The utility model relates to a kind of Phosphine processing device, belongs to technical field of waste gas treatment.This device comprises absorption tower and neutralizing tank; Described absorption tower comprises tower body, and tower body outside is provided with leakage fluid dram from down to up successively, gas feed, overfall, absorbing liquid import and gas vent; Tower body inside is provided with air inlet spray head from the bottom to top successively, orifice plate, baffle ring and cloth liquid dish; Air inlet spray head is communicated with gas feed; Cloth liquid dish and absorbing liquid inlet communication; There is absorbing liquid tower body inside; Leakage fluid dram is connected with neutralizing tank by pipeline.The utility model is adopted finally to make the hydrogen phosphide (PH discharged
3) the exhaust gas conversion phosphate fertilizer that becomes can again utilize, substantially reach the discharge of hydrogen phosphide " zero " content, avoid atmosphere pollution, and generate can the fertilizer that utilizes of secondary, to protection health and atmospheric environment, all there is positive meaning.
Description
Technical field
The utility model relates to a kind of Phosphine processing device, belongs to technical field of waste gas treatment.
Background technology
Hydrogen phosphide is a kind of poisonous and hazardous gas, has the feature of high toxicity, spontaneous combustion, has obvious injury to human body, producing and using the unit of hydrogen phosphide, if directly discharged phosphine gas, can atmosphere pollution be caused, therefore to the absorption of phosphine waste gas and process particularly important.
In currently available technology, combustion method, wet method and dry method are mainly contained to the apparatus and method that phosphine waste gas carries out absorption cleaning.Wherein combustion method is traditional hydrogen phosphide processing method, be blended in incinerator combustion by hydrogen phosphide and air and generate phosphoric acid smog, gained smog passes into the phosphoric acid that absorption tower obtains technical grade, but the shortcoming of the method is that incinerator adopts electrical heating, belong to high-energy equipment, the phosphoric acid smog of generation has stronger corrosivity to reactor, and incinerator each section of temperature difference is large, be unfavorable for safety in production, also there is the possibility of gas leakage.Wet-treating hydrogen phosphide adopts clorox to be absorbent, and generate more stable phosphoric acid salt, shortcoming is: the accessory substance chlorine producing large quantitative response causes secondary pollution, hypochlorous unstable chemcial property, very easily decompose, lost efficacy, need frequently to change absorbing liquid, increase extra cost.Dry process hydrogen phosphide adopts active carbon to adsorb hydrogen phosphide, but do not change the chemical property of hydrogen phosphide, and weak point is that the method that the active carbon after absorption will adopt or burn or resolve carries out post-processed, still there is pollution problem.No matter above method is chemical transfer method and absorption method, the secondary pollution caused to a certain degree mostly more or less.
Summary of the invention
For the deficiencies in the prior art part, the utility model proposes a kind of Phosphine processing device, adopt the utility model, finally make the hydrogen phosphide (PH discharged
3) the exhaust gas conversion phosphate fertilizer that becomes can again utilize, substantially reach the discharge of hydrogen phosphide " zero " content, avoid atmosphere pollution, and generate can the fertilizer that utilizes of secondary.
A kind of Phosphine processing device described in the utility model, comprises absorption tower and neutralizing tank; Described absorption tower comprises tower body, and tower body outside is provided with leakage fluid dram from down to up successively, gas feed, overfall, absorbing liquid import and gas vent; Tower body inside is provided with air inlet spray head from the bottom to top successively, orifice plate, baffle ring and cloth liquid dish; Air inlet spray head is communicated with gas feed; Cloth liquid dish and absorbing liquid inlet communication; There is absorbing liquid tower body inside; Leakage fluid dram is connected with neutralizing tank by pipeline.
The concrete handling process of phosphine gas is: the gas containing hydrogen phosphide enters into air inlet spray head by gas feed, be dispersed in absorbing liquid under the effect of air inlet spray head and react, hydrogen peroxide and hydrogen phosphide react in acid condition, and concrete reaction equation is:
2H
2O
2+PH
3＝H
3PO
2+2H
2O
3H
2O
2+PH
3＝H
3PO
3+3H
2O
Air inlet spray head described in the utility model can carry out preliminary dispersion to the gas of phosphine containing.Gas continues to rise in absorbing liquid, through the orifice plate of tower body inside, be dispersed into some small and weak air-flows, absorbing liquid presents foamed state under the effect of air-flow, namely the absorbing liquid above orifice plate mixes with the air-flow of phosphine containing, presents a froth bed state, adds the contact area of gas-liquid, increase reaction probabilities, hydrogen phosphide can be fully absorbed.Height between orifice plate described in the utility model and overfall is the 2/3-3/5 of tower height, and that is the height of whole froth bed is the 2/3-3/5 of tower height, ensure that gas-liquid contact has enough reaction strokes, hydrogen phosphide can absorbed liquid fully be absorbed; The aperture of described absorption tower aperture plate is 1mm-3mm, and percent opening is not less than 30%, preferred 30%-40%, can ensure that the gas of phosphine containing is dispersed into more tiny air-flow, increases gas liquid interfacial area.
In order to ensure good assimilation effect further, grope to determine that the mass fraction of hydrogen peroxide in described absorbing liquid is 3%-5% through utility model people test of many times; The concentration of sulfuric acid is 0.25mol/L.In described absorption tower under static conditions the height of absorbing liquid higher than orifice plate height, lower than the height of overfall.The gas orifice tower flow velocity on described absorption tower is 0.02m/sec-0.05m/sec.The tower height on described absorption tower is 7:1 ~ 10:1 with tower diameter ratio.
Further, the overfall on absorption tower described in the utility model can be communicated with bottom tower body, and the absorbing liquid of overflow can be utilized by again returning tower body.
In actual production running, run after a period of time, if during absorption hypervolia in absorption tower, by the leakage fluid dram bottom tower body absorbing liquid part can be discharged and enter follow-up course of reaction.
Absorbing liquid described in the utility model adopts the conventional method of this area to carry out preparing.The absorbability of following methods to absorbing liquid can be adopted in concrete processing procedure to control: (1) measures hydrogen peroxide (H
2o
2) content judges, with iodimetric titration capacity analysis hydrogen peroxide (H
2o
2) content, work as H
2o
2concentration < 0.2% ~ 0.3%, hydrogen peroxide is supplemented; (2) concentration of discharge phosphine gas is measured, when discharge capacity is more than 1 μm of ol/mol, if process conditions do not change, to hydrogen peroxide (H
2o
2) supplement.
After froth bed absorbs, in handled gas, the content of hydrogen phosphide is very little, in order to avoid the hydrogen phosphide in gas absorbs not exclusively, gas after froth bed absorbs continues to rise, divide the absorbing liquid planted to form " liquid film " from cloth liquid dish and carry out reverse contact with the gas risen, hydrogen phosphide wherein is further absorbed, in order to ensure the abundant contact between the gas of rising and " liquid film ", the below of cloth liquid dish is provided with baffle ring, the diameter of described cloth liquid dish is greater than the internal diameter of baffle ring, the gas risen can all rise and contact with the liquid that cloth liquid dish distributes under the effect of baffle ring from the endoporus of baffle ring, the hydrogen phosphide remained is fully absorbed again, ensure clean-up effect.
The utility model is by the double-absorption of froth bed with " liquid film ", and phosphine gas residual in final gas is very little, can reach the absorptivity of more than 99%, and the gas after absorption tower absorbs is discharged from the gas vent at tower body top.The utility model is applicable to phosphine containing and does not contain the process of the gas of other reducing substances.
The absorbing liquid absorbed after phosphine gas enters neutralizing tank from leakage fluid dram by pipeline, and carry out reaction further with limewash and generate calcium sulfate-calcium phosphate emulsion, this reaction end pH value is 6.The composition of this emulsion is identical with calcium superphosphate composition, thus can use as phosphate fertilizer, also can add the organic matters such as other potash fertilizer, directly apply to agricultural, as may be used for courtyard greening and crops etc.This emulsion can directly use or use decorating film after precipitation, supernatant liquor reusable edible preparation absorbing liquid after precipitation, do not produce fluid discharge, calcium superphosphate content > 25%, conversion ratio > 90% in the emulsion after transforming.
In sum, the utility model has the advantages that and absorb phosphine waste gas substantially completely, the toxicity of hydrogen phosphide is down to minimum, almost nil, and be converted to the fertilizer that can again utilize and carry out secondary utilization.Be be converted to useful by useless, convert to nontoxic by poisonous, the process turned waste into wealth, and input cost is lower, is that a utilization ratio is high, all has the utility model of positive effect to protection health and atmospheric environment.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the structural representation of orifice plate described in the utility model.
In figure: 1, tower body, 2, gas feed, 3, overfall, 4, absorbing liquid import, 5, gas vent, 6, air inlet spray head, 7, orifice plate, 8, baffle ring, 9, cloth liquid dish, 10, leakage fluid dram, 11, neutralizing tank.
Detailed description of the invention
Embodiment 1
A kind of Phosphine processing device, this device comprises absorption tower and neutralizing tank; Described absorption tower comprises tower body 1, and tower body 1 outside is provided with leakage fluid dram 10 from down to up successively, gas feed 2, overfall 3, absorbing liquid import 4 and gas vent 5; Tower body 1 inside is provided with air inlet spray head 6 from the bottom to top successively, orifice plate 7, baffle ring 8 and cloth liquid dish 9; Air inlet spray head 6 is communicated with gas feed 2; Cloth liquid dish 9 is communicated with absorbing liquid import 4; There is absorbing liquid tower body 1 inside; Leakage fluid dram 10 is connected with neutralizing tank 11 by pipeline.
Described absorbing liquid is the aqueous solution of hydrogen peroxide and sulfuric acid composition; In described absorbing liquid, the mass fraction of hydrogen peroxide is 5%; The concentration of sulfuric acid is 0.25mol/L.
Height between described orifice plate 7 and overfall 3 is 2/3 of tower height.
The gas void tower flow velocity on described absorption tower is 0.02m/sec.
The aperture of described absorption tower aperture plate 7 is 3mm, percent opening 30%.
The tower height on described absorption tower is 7:1 with tower diameter ratio
In described absorption tower under static conditions absorbing liquid height higher than orifice plate 7 height.
The diameter of described cloth liquid dish 9 is greater than the internal diameter of baffle ring 8.
Solution after absorption phosphine gas and limewash reaction end pH value are 6.
Embodiment 2
A kind of Phosphine processing device, comprises absorption tower and neutralizing tank; Described absorption tower comprises tower body, and tower body outside is provided with leakage fluid dram from down to up successively, gas feed, overfall, absorbing liquid import and gas vent; Tower body inside is provided with air inlet spray head from the bottom to top successively, orifice plate, baffle ring and cloth liquid dish; Air inlet spray head is communicated with gas feed; Cloth liquid dish and absorbing liquid inlet communication; There is absorbing liquid tower body inside; Leakage fluid dram is connected with neutralizing tank by pipeline.
Described absorbing liquid is the aqueous solution of hydrogen peroxide and sulfuric acid composition; In described absorbing liquid, the mass fraction of hydrogen peroxide is 3%; The concentration of sulfuric acid is 0.25mol/L.
Height between described orifice plate and overfall is 3/5 of tower height.
The gas void tower flow velocity on described absorption tower is 0.03m/sec.
The aperture of described absorption tower aperture plate is 1mm, percent opening 40%.
The tower height on described absorption tower is 8:1 with tower diameter ratio
In described absorption tower under static conditions the height of absorbing liquid higher than orifice plate height.
The diameter of described cloth liquid dish is greater than the internal diameter of baffle ring.
Solution after absorption phosphine gas and limewash reaction end pH value are 6.
Embodiment 3
A kind of Phosphine processing device, comprises absorption tower and neutralizing tank; Described absorption tower comprises tower body, and tower body outside is provided with leakage fluid dram from down to up successively, gas feed, overfall, absorbing liquid import and gas vent; Tower body inside is provided with air inlet spray head from the bottom to top successively, orifice plate, baffle ring and cloth liquid dish; Air inlet spray head is communicated with gas feed; Cloth liquid dish and absorbing liquid inlet communication; There is absorbing liquid tower body inside; Leakage fluid dram is connected with neutralizing tank by pipeline.
Described absorbing liquid is the aqueous solution of hydrogen peroxide and sulfuric acid composition; In described absorbing liquid, the mass fraction of hydrogen peroxide is 4%; The concentration of sulfuric acid is 0.25mol/L.
Height between described orifice plate and overfall is 2/3 of tower height.
The gas void tower flow velocity on described absorption tower is 0.05m/sec.
The aperture of described absorption tower aperture plate is 2mm, percent opening 35%.
The tower height on described absorption tower is 10:1 with tower diameter ratio
In described absorption tower under static conditions the height of absorbing liquid higher than orifice plate height.
The diameter of described cloth liquid dish is greater than the internal diameter of baffle ring.
Solution after absorption phosphine gas and limewash reaction end pH value are 6.
Claims (6)
1. a Phosphine processing device, is characterized in that: this device comprises absorption tower and neutralizing tank; Described absorption tower comprises tower body (1), tower body (1) outside is provided with leakage fluid dram (10) from down to up successively, gas feed (2), overfall (3), absorbing liquid import (4) and gas vent (5); Tower body (1) inside is provided with air inlet spray head (6) from the bottom to top successively, orifice plate (7), baffle ring (8) and cloth liquid dish (9); Air inlet spray head (6) is communicated with gas feed (2); Cloth liquid dish (9) is communicated with absorbing liquid import (4); There is absorbing liquid tower body (1) inside; Leakage fluid dram (10) is connected with neutralizing tank (11) by pipeline.
2. a kind of Phosphine processing device according to claim 1, is characterized in that: the height between described orifice plate (7) and overfall (3) is the 2/3-3/5 of tower height.
3. a kind of Phosphine processing device according to claim 1, is characterized in that: the aperture on described absorption tower aperture plate (7) is 1mm-3mm, and percent opening is not less than 30%.
4. a kind of Phosphine processing device according to claim 1, is characterized in that: the tower height on described absorption tower is 7:1 ~ 10:1 with tower diameter ratio.
5. a kind of Phosphine processing device according to claim 1, is characterized in that: in described absorption tower, under static conditions, the height of absorbing liquid is higher than orifice plate (7) highly.
6. a kind of Phosphine processing device according to claim 1, is characterized in that: the diameter of described cloth liquid dish (9) is greater than the internal diameter of baffle ring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317109.8U CN204637962U (en) | 2015-05-15 | 2015-05-15 | A kind of Phosphine processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317109.8U CN204637962U (en) | 2015-05-15 | 2015-05-15 | A kind of Phosphine processing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204637962U true CN204637962U (en) | 2015-09-16 |
Family
ID=54090738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520317109.8U Expired - Fee Related CN204637962U (en) | 2015-05-15 | 2015-05-15 | A kind of Phosphine processing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204637962U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118179240A (en) * | 2024-05-16 | 2024-06-14 | 全椒南大光电材料有限公司 | Phosphine-containing waste gas treatment system |
-
2015
- 2015-05-15 CN CN201520317109.8U patent/CN204637962U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118179240A (en) * | 2024-05-16 | 2024-06-14 | 全椒南大光电材料有限公司 | Phosphine-containing waste gas treatment system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150916 Termination date: 20180515 |