CN203558901U - Supercritical water oxidization treatment device for coking waste water - Google Patents
Supercritical water oxidization treatment device for coking waste water Download PDFInfo
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- CN203558901U CN203558901U CN201320755567.0U CN201320755567U CN203558901U CN 203558901 U CN203558901 U CN 203558901U CN 201320755567 U CN201320755567 U CN 201320755567U CN 203558901 U CN203558901 U CN 203558901U
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- coking waste
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Abstract
The utility model discloses a supercritical water oxidization treatment device for coking waste water. The supercritical water oxidization treatment device comprises a coking waste water tank, an oxidant tank, and a reaction kettle arranged on a heating furnace, the coking waste water tank and the oxidant tank are respectively connected with a plunger type metering pump, and the two plunger type metering pumps are connected with the reaction kettle through a three-way valve; a thermocouple thermometer is arranged on the reaction kettle and connected with a temperature controller; the reaction kettle is connected with a gas-liquid separator through a cooler and a back pressure valve; a stirrer is arranged in the reaction kettle. According to the supercritical water oxidization treatment device, coking waste water and hydrogen peroxide are subjected to warming and pressurization reaction in the reaction kettle, so that the COD (Chemical Oxygen Demand), volatile phenol, total cyanide, benzo (a) pyrene and other poisonous and harmful pollutants in the coking waste water can be efficiently removed, the pollutants can be thoroughly treated, the reaction is fast, the yielding water is colorless and transparent, thus being a new method superior to a biological method in high efficiency and pollutant emission reduction cost, and being greatly wide in application prospects.
Description
Technical field
The utility model relates to environmental science, especially a kind of supercritical water oxidation treatment unit of coking chemical waste water.
Background technology
China's Coal Chemical Industry coking industry fast development in recent years, consequent a large amount of coking chemical waste waters have caused very large pollution to environment.In industry fast development, synchronously strengthen the management to coking chemical waste water, be the important step that realizes pollution reduction and advance cleaner production.Coking chemical waste water results from the process of coking and Chemicals purification and recover, its water-quality constituents complexity, contain the inorganic and organic compound of kind more than 90, wherein inorganics mainly contains ammonia nitrogen, prussiate etc., and organism is mainly that the biological processes such as phenols and benzopyrene are difficult to the material of removing.
Because coking chemical waste water is the trade effluent of utmost point difficult degradation, existing treatment process is difficult to realize the discharge of pollutent stably reaching standard.Therefore, the research and development of new and effective Technologies of Coke Plant Wastewater Treatment are focus and the difficult points of recent domestic environmental protection technology research.
20th century the mid-80, Modell proposes supercritical water oxidation (SCWO) technology, when the temperature and pressure of water is elevated to stagnation point (Tc=374.3 ℃, Pc=22.05MPa) more than, will there is huge variation in the character such as the density of water, specific inductivity, viscosity, spread coefficient, water will also be different from liquid and solid-state new fluid state in a kind of gaseous state that had both been different from, and the water under this state is just called supercritical water.Organism and oxygen can dissolve each other in supercritical water, therefore organic oxidation can be carried out in the homogeneous phase of oxygen enrichment, instead would not be restricted because of alternate transfer, be swift in response, and supercritical water oxidation fully and completely, organism can complete oxidation be carbonic acid gas and water.Supercritical water oxidation method because of its reaction efficiency high, Pollutant Treatment is effective, more and more receives people's concern, becomes the research emphasis of processing indegradable industrial effluent technology.
Summary of the invention
The purpose of this utility model is: a kind of supercritical water oxidation treatment unit of coking chemical waste water is provided, and it can effectively be degraded the coking chemical waste water of high density, difficult degradation and remove pollutent, to overcome the deficiencies in the prior art.
The utility model is achieved in that the supercritical water oxidation treatment unit of coking chemical waste water, comprise coking chemical waste water tank, oxygenant tank, and be arranged on the reactor on process furnace, coking chemical waste water tank and oxygenant tank connect respectively a plunger type metering pump, and two plunger type metering pumps are connected with reactor by T-valve; On reactor, be provided with thermocouple thermometer, on thermocouple thermometer, be connected with temperature regulator; Reactor is connected with gas-liquid separator by water cooler and back pressure valve; In reactor, be provided with agitator.
Between reactor and water cooler, be provided with tensimeter.
Owing to having adopted technique scheme, compared with prior art, the utility model adopts supercritical water oxidation SCWO method Treatment of Wastewater in Coking, using hydrogen peroxide as oxygenant, coking chemical waste water and hydrogen peroxide are heated in reactor, compressive reaction, can make the COD in coking chemical waste water, volatile phenol, the hazardous contaminants such as total cyanide and benzo (a) pyrene all can efficiently be removed, Pollutant Treatment is more thorough, be swift in response, water outlet water white transparency, pollutant emission reaches < < coking chemistry emission of industrial pollutants standard > > (GB16171-2012), ammonia nitrogen can qualified discharge after adopting blow-off method Transformatin, processing cost is adjusted, and on average removes 1 ton of COD, and supercritical water oxidation method (SCWO) saves 20%～25% than biological process, is a kind of novel method that a kind of high-level efficiency and pollution reduction cost are better than biological process, and application prospect is very wide.The utility model is simple, can efficiently process the coking chemical waste water of high density, difficult degradation, and processing cost is reasonable, and simple in structure, with low cost, result of use is good.
Accompanying drawing explanation
Accompanying drawing 1 is structural representation of the present utility model.
Embodiment
Process while starting, first carry out hydrostatic test and air tight test, then the heater switch on open temp controller 12, start to heat up, with plunger type metering pump 3, distilled water is squeezed into autoclave 5 simultaneously, regulation system temperature, pressure reach after preset value, the distilled water of charging is switched to coking chemical waste water 1 and hydrogen peroxide 2, coking chemical waste water 1 and hydrogen peroxide 2 are squeezed into autoclave 5 by plunger type metering pump 3 respectively, and in the interior abundant reaction of autoclave 5, reacted water is cooling through water cooler 8, then enters gas-liquid separator 13 after back pressure valve 10 decompressions; System pressure is controlled by back pressure valve 10, by process furnace 11, reactor 5 is heated, and by temperature regulator 12, controls temperature; After reactive system is stable, start to collect gaseous product and product liquid.
The supercritical water oxidation processing of coking chemical waste water, phenol concentration is respectively 10000 mgL
-1, 5000 mgL
-1, 2000 mgL
-1waste water, adopt the method for embodiment 1 to process, reaction conditions: 450 ℃ of temperature, pressure 25 MPa, oxidant ratio K is 1.3, water outlet COD clearance is respectively 98.91%, 98.90%, 98.55%.
The supercritical water oxidation processing of coking chemical waste water, in the utility model, the coking chemical waste water that 1LCOD is 5357mg/L, K=3.0, adds 103.5ml hydrogen peroxide; Reaction conditions: 480 ℃ of temperature, pressure 26 MPa, oxidant ratio K is 3.0, copper ion concentration is 45 mgL
-1, influent concentration is as shown in table 1.
According to table 1, learn, water outlet COD, volatile phenol, total cyanide, benzene (a) pyrene clearance are respectively 98.25%, 99.98%, 99.86%, 99.96%.
The supercritical water oxidation processing of coking chemical waste water, adopts the scheme of embodiment 1 to carry out the treatment of Organic Wastewater of different sorts different concns, and result is as shown in table 2.
According to table 2, learn, through SCWO organic waste water after treatment, COD concentration significantly reduces, and COD clearance all reaches more than 97%.
Claims (2)
1. the supercritical water oxidation treatment unit of a coking chemical waste water, comprise coking chemical waste water tank (1), oxygenant tank (2), and be arranged on the reactor (5) on process furnace (11), it is characterized in that: coking chemical waste water tank (1) and oxygenant tank (2) connect respectively a plunger type metering pump (3), two plunger type metering pumps (3) are connected with reactor (5) by T-valve (4); On reactor (5), be provided with thermocouple thermometer (6), on thermocouple thermometer (6), be connected with temperature regulator (12); Reactor (5) is connected with gas-liquid separator (13) by water cooler (9) and back pressure valve (10); In reactor (5), be provided with agitator (9).
2. the supercritical water oxidation treatment unit of coking chemical waste water according to claim 1, is characterized in that: between reactor (5) and water cooler (9), be provided with tensimeter (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320755567.0U CN203558901U (en) | 2013-11-27 | 2013-11-27 | Supercritical water oxidization treatment device for coking waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320755567.0U CN203558901U (en) | 2013-11-27 | 2013-11-27 | Supercritical water oxidization treatment device for coking waste water |
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| Publication Number | Publication Date |
|---|---|
| CN203558901U true CN203558901U (en) | 2014-04-23 |
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| CN201320755567.0U Expired - Fee Related CN203558901U (en) | 2013-11-27 | 2013-11-27 | Supercritical water oxidization treatment device for coking waste water |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103570119A (en) * | 2013-11-27 | 2014-02-12 | 贵州省环境科学研究设计院 | Supercritical water oxidation treatment method and device for treating coking wastewater |
| CN106430518A (en) * | 2016-09-26 | 2017-02-22 | 深圳市格云宏邦环保科技有限公司 | Monitoring-supercritical treatment system |
-
2013
- 2013-11-27 CN CN201320755567.0U patent/CN203558901U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103570119A (en) * | 2013-11-27 | 2014-02-12 | 贵州省环境科学研究设计院 | Supercritical water oxidation treatment method and device for treating coking wastewater |
| CN106430518A (en) * | 2016-09-26 | 2017-02-22 | 深圳市格云宏邦环保科技有限公司 | Monitoring-supercritical treatment system |
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| 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: 20140423 Termination date: 20201127 |