CN103304047B - A kind of coking desulfurization waste liquor pretreatment unit - Google Patents
A kind of coking desulfurization waste liquor pretreatment unit Download PDFInfo
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- CN103304047B CN103304047B CN201310189495.2A CN201310189495A CN103304047B CN 103304047 B CN103304047 B CN 103304047B CN 201310189495 A CN201310189495 A CN 201310189495A CN 103304047 B CN103304047 B CN 103304047B
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Abstract
A kind of coking desulfurization waste liquor pretreatment unit, belong to coking desulfurization waste liquor treatment facility technical field, for the sulphur in fast eliminating coking desulfurization waste liquor and pigment, its technical scheme is: its force (forcing) pump is connected with the liquid outlet of flotation cell respectively with the input duct of water sprayer, force (forcing) pump is connected with the fluid inlet of dissolving with the fluid pipeline of water sprayer, the fluid pipeline of dissolving is connected with flotation cell, the liquid-transport pipe-line of grug feeding jar is connected with flotation cell by dosing pump, and flotation cell is provided with slag scraper.Desulfurization waste liquor containing tensio-active agent carries out pressurizeing by the present invention, molten gas, after aeration head decompression release, the bubble that tensio-active agent is formed can carry out fractionation by adsorption efficiently to organism, suspended substance and metal ion, and scum silica frost is removed by slag scraper, reaches the pretreated object of waste liquid.Byproduct of the present invention yields poorly, and avoids a large amount of generations of gac waste in activated carbon decolorizing technique, has the advantage that structure is simple, result of use is good.
Description
Technical field
The present invention relates to a kind of pre-treatment decolouring desulfurizer of coking desulfurization waste liquor, belong to coking desulfurization waste liquor treatment facility technical field.
Background technology
In the sweetening process of coking production, in desulphurization circulating liquid, constantly produce the secondary salts such as thiocyanate-, thiosulphate and vitriol, must regular replacing section desulphurization mother solution.Because the desulfurization waste liquor COD content displaced is very high, therefore having to pass through process could discharge.The main processing steps of current employing is heat decoloring, vacuum-evaporation and freezing and crystallizing operation.This treatment process can produce a large amount of gac wastes in heat decoloring operation, is 70000Nm for a design coal resource
3the coke-oven plant of/h, the gac that its process desulfurization waste liquor uses is 1.5t/d, and these gacs are after using as discoloring agent, and be difficult to recycle, can only be blended in coal blending, therefore cost consumption is very high.And heating activated carbon bleaching time is at 4 hours, the treatment time is long, decolours better to metal ion, organic matter removal effect, lower to elemental sulfur adsorptivity, and the existence of the elemental sulfur freezing and crystallizing follow-up to waste liquid brings disadvantageous effect.In order to overcome the problem that heating activated carbon bleaching time is long and waste liquid suspension flow clearance is low, it is very necessary for improving current decoloring equipment.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of coking desulfurization waste liquor pretreatment unit, this device can sulphur in fast eliminating coking desulfurization waste liquor and pigment, improve the processing speed of waste liquid, reduce foreign matter content in waste liquid to eliminate its impact on subsequent treatment process, strengthen the pretreating effect of desulfurization waste liquor.
The technical scheme solved the problems of the technologies described above is:
A kind of coking desulfurization waste liquor pretreatment unit, its formation comprises force (forcing) pump, water sprayer, dissolving, aeration head, flotation cell, grug feeding jar, dosing pump, slag scraper, force (forcing) pump is connected with the liquid outlet of flotation cell respectively with the input duct of water sprayer, force (forcing) pump is connected with the fluid inlet of dissolving with the fluid pipeline of water sprayer, the fluid pipeline of dissolving is connected with flotation cell, the liquid-transport pipe-line of grug feeding jar is connected with flotation cell by dosing pump, flotation cell is provided with slag scraper, and aeration head is arranged on the drain pipe road junction of the dissolving in flotation cell.
Above-mentioned coking desulfurization waste liquor pretreatment unit, is added with tensio-active agent in described grug feeding jar.
Above-mentioned coking desulfurization waste liquor pretreatment unit, the input duct at described water sprayer two ends is separately installed with water intaking valve and outlet valve, and water sprayer is also provided with intake valve.
Above-mentioned coking desulfurization waste liquor pretreatment unit, described aeration head has micropore, and micro-pore diameter is 8-15um.
Above-mentioned coking desulfurization waste liquor pretreatment unit, described slag scraper is connected with scum silica frost letdown tank.
The invention has the beneficial effects as follows:
The present invention enters dissolving after being pressurizeed by force (forcing) pump by the desulfurization waste liquor containing tensio-active agent, dissolving, water sprayer makes air enter in dissolving, desulfurization waste liquor containing tensio-active agent in dissolving is by after aeration head decompression release, the bubble that tensio-active agent is formed can carry out fractionation by adsorption efficiently to organism, suspended substance and metal ion, by the impurity flotation in desulfurization waste liquor to flotation cell surface, by slag scraper, scum silica frost is removed, reach the pretreated object of waste liquid.The present invention is decoloured by the foam of anion surfactant, and byproduct yields poorly, and avoids a large amount of generations of gac waste in activated carbon decolorizing technique, and technical process is cleaned, and pollute little, process byproducts easily processes.The present invention has that structure is simple, result of use good, advantage is easily changed in installation and maintenance.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, mark is as follows: force (forcing) pump 1, water sprayer 2, dissolving 3, aeration head 4, flotation cell 5, grug feeding jar 6, dosing pump 7, slag scraper 8, scum silica frost letdown tank 9, stock liquid 10, next procedure 11.
Embodiment
The present invention is made up of force (forcing) pump 1, water sprayer 2, dissolving 3, aeration head 4, flotation cell 5, grug feeding jar 6, dosing pump 7, slag scraper 8, scum silica frost letdown tank 9.
Show in figure, force (forcing) pump 1, water sprayer 2, dissolving 3, aeration head 4 form pressure air-dissolving release portion, the desulfurization waste liquor of the air that water sprayer 2 sucks and force (forcing) pump 1 mixes at dissolving 3, then the desulfurization waste liquor containing tensio-active agent is transported to decompression release in flotation cell 5, organism in bubble absorption waste liquid, suspended substance and metal ion etc., by flotation to flotation cell 5 surface, remove after producing scum silica frost.
The structure of pressure air-dissolving release portion is: force (forcing) pump 1 is connected with the liquid outlet of flotation cell 5 respectively with the input duct of water sprayer 2, force (forcing) pump 1 is connected with the fluid inlet of dissolving 3 with the fluid pipeline of water sprayer 2, water sprayer 2 produces negative pressure by the injection of the desulfurization waste liquor of pressurization and sucks air, the fluid pipeline of dissolving 3 is connected with flotation cell 5, and aeration head 4 is arranged on the drain pipe road junction of the dissolving 3 in flotation cell 5.
The operating pressure of dissolving 3 controls at 0.3 ± 0.05MPa.
The input duct at water sprayer 2 two ends is separately installed with water intaking valve and outlet valve, and water sprayer 2 is also provided with intake valve.By the adjustment of water intaking valve and intake valve, appropriate air can be entered dissolving 3 by water sprayer 2.
Aeration head 4 has micropore, and micro-pore diameter is 8-15um.The micro-pore diameter of the aeration head 4 of one embodiment of the present of invention is 10um.
Show in figure, grug feeding jar 6, dosing pump 7 form dosing part, are added to by tensio-active agent in the desulfurization waste liquor in flotation cell 5.
The structure of dosing part is: the liquid-transport pipe-line of grug feeding jar 6 is connected with flotation cell 5 by dosing pump 7, is added with tensio-active agent in grug feeding jar 6.The tensio-active agent that one embodiment of the present of invention are added comprises Sodium dodecylbenzene sulfonate and sodium laurylsulfonate.
Show in figure, flotation cell 5, slag scraper 8, scum silica frost letdown tank 9 form flotation part, for descum, reach the pretreated object of waste liquid.
The structure of flotation part is: slag scraper 8 is installed on flotation cell 5, and slag scraper 8 is connected with scum silica frost letdown tank 9, and slag scraper 8 is rotary or reciprocating walking, is furnished with step-down gear traveling speed and controls at 1-2 rev/min.
Claims (4)
1. a coking desulfurization waste liquor pretreatment unit, it is characterized in that: its formation comprises force (forcing) pump (1), water sprayer (2), dissolving (3), aeration head (4), flotation cell (5), grug feeding jar (6), dosing pump (7), slag scraper (8), force (forcing) pump (1) is connected with the liquid outlet of flotation cell (5) respectively with the input duct of water sprayer (2), force (forcing) pump (1) is connected with the fluid inlet of dissolving (3) with the fluid pipeline of water sprayer (2), the fluid pipeline of dissolving (3) is connected with flotation cell (5), grug feeding jar is added with surfactant sodium dodecyl base benzene sulfonic acid sodium salt and sodium laurylsulfonate in (6), the liquid-transport pipe-line of grug feeding jar (6) is connected with flotation cell (5) by dosing pump (7), tensio-active agent is added in the desulfurization waste liquor in flotation cell (5), flotation cell (5) is provided with slag scraper (8), aeration head (4) is arranged on the drain pipe road junction of the dissolving (3) in flotation cell (5).
2. coking desulfurization waste liquor pretreatment unit according to claim 1, is characterized in that: the input duct at described water sprayer (2) two ends is separately installed with water intaking valve and outlet valve, and (2) are also provided with intake valve to water sprayer.
3. coking desulfurization waste liquor pretreatment unit according to claim 1 and 2, is characterized in that: (4) have micropore to described aeration head, and micro-pore diameter is 8-15um.
4. coking desulfurization waste liquor pretreatment unit according to claim 3, it is characterized in that: flotation cell (5), slag scraper (8), scum silica frost letdown tank (9) composition flotation part is used for descum, slag scraper (8) is connected with scum silica frost letdown tank (9), slag scraper (8) is rotary or reciprocating walking, is furnished with step-down gear traveling speed and controls at 1-2 rev/min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310189495.2A CN103304047B (en) | 2013-05-21 | 2013-05-21 | A kind of coking desulfurization waste liquor pretreatment unit |
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| CN201310189495.2A CN103304047B (en) | 2013-05-21 | 2013-05-21 | A kind of coking desulfurization waste liquor pretreatment unit |
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| CN103304047A CN103304047A (en) | 2013-09-18 |
| CN103304047B true CN103304047B (en) | 2016-04-13 |
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Families Citing this family (2)
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| CN105600860A (en) * | 2016-03-02 | 2016-05-25 | 北京富海天环保科技有限公司 | Device and method for removing suspended sulfur and tar during coked desulfuration waste liquid salt extraction |
| CN111233234B (en) * | 2020-01-16 | 2022-03-22 | 广东丽臣奥威实业有限公司 | Recovery process of surfactant in wastewater |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249463A (en) * | 2011-06-23 | 2011-11-23 | 蓝星环境工程有限公司 | Device for pretreating epoxy resin wastewater |
| CN102249460A (en) * | 2011-06-16 | 2011-11-23 | 蓝星环境工程有限公司 | Pretreatment method for photosensitive material waste water |
| CN203360135U (en) * | 2013-05-21 | 2013-12-25 | 河北钢铁股份有限公司唐山分公司 | Coking desulfurization waste liquid pretreatment device |
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- 2013-05-21 CN CN201310189495.2A patent/CN103304047B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249460A (en) * | 2011-06-16 | 2011-11-23 | 蓝星环境工程有限公司 | Pretreatment method for photosensitive material waste water |
| CN102249463A (en) * | 2011-06-23 | 2011-11-23 | 蓝星环境工程有限公司 | Device for pretreating epoxy resin wastewater |
| CN203360135U (en) * | 2013-05-21 | 2013-12-25 | 河北钢铁股份有限公司唐山分公司 | Coking desulfurization waste liquid pretreatment device |
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Address after: 063016 Binhe Road, Hebei, Tangshan City, No. 9 Patentee after: River steel Limited by Share Ltd Tangshan branch Address before: 063016 Binhe Road, Hebei, Tangshan City, No. 9 Patentee before: Hebei Steel Co., Ltd., Tangshan Branch |