CN105712421A - Method for harmlessly treating coal chemical industry organic high-salinity wastewater by two-stage heating and oxygen-enriched combustion - Google Patents
Method for harmlessly treating coal chemical industry organic high-salinity wastewater by two-stage heating and oxygen-enriched combustion Download PDFInfo
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- CN105712421A CN105712421A CN201610032928.7A CN201610032928A CN105712421A CN 105712421 A CN105712421 A CN 105712421A CN 201610032928 A CN201610032928 A CN 201610032928A CN 105712421 A CN105712421 A CN 105712421A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/04—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste liquors, e.g. sulfite liquors
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a method for harmlessly treating coal chemical industry organic high-salinity wastewater by two-stage heating and oxygen-enriched combustion, characterized by comprising the following steps: placing coal chemical industry organic high-salinity wastewater in an electric furnace for two-stage heating, with specific heating settings including: first-stage heating rate 1 DEG C to 5 DEG C per min, holding the temperature for 60-120 min after temperature rises to 100-120 DEG C; second-stage heating rate 15 DEG C to 35 DEG C per min, holding the temperature for 30-90 min after temperature rises to 1450-1500 DEG C; after material is fully melted, blowing oxygenated gas into a melting tank for the oxygen-enriched combustion of organic matters COD in the organic high-salinity wastewater, purifying and discharging flue gas with NOX, SOX and HCL toxic matters to atmosphere, and pouring molten waste salt from the electric furnace and converting into nontoxic solid waste, thus harmlessly treating the coal chemical industry organic high-salinity wastewater. The method has a short technical process, is simple and easy to perform and has a promising industrial application prospect.
Description
Technical field
A kind of method that the present invention relates to two sections of intensification-oxygen-rich combustion method organic high-salt wastewaters of harmless treatment Coal Chemical Industry, belongs to the useless harmless environmental protection field of danger.
Background technology
Generally high-salt wastewater refers to the waste water more than 3.5% of the mass fraction containing Organic substance and total dissolved solidss (TDS).Because in this kind of waste water, except containing organic pollution, possibly together with the inorganic salt of great amount of soluble, such as Cl-、Na+、SO4 2-、Ca2+, this kind of waste water is usually the limit of biochemical treatment.Treatment method for high-salinity wastewater mainly has biochemical treatment process, evaporation concentration method and multiple-effect distillation at present.Progress and development along with biochemical technology, being successfully separated of salt tolerant halophilic bacteria, cultivate, tame and be possibly realized so that using biochemical method to process dense salt waste water, in particular with salt tolerant halophilic bacteria kind, use materialization-biochemistry coupling technique technology, more promote the through engineering approaches that dense salt waste water processes.The development of biochemical technology, although improve the environmental suitability of strain, can reduce the COD content in dense salt waste water.But, owing to the environmental suitability of salt tolerant halophilic bacteria has certain limit, still have substantial amounts of dense salt waste water to face a difficult problem for effectively process.Only the COD in dense salt waste water is removed, simultaneously by the solubility salts substances separating treatment of strong brine, be only the final disposal target of dense salt waste water.To this end, " strong brine low-grade utility-evaporate-crystallization technique " technical finesse this type of waste water is proposed.But, final result is not to obtain the desired result-Nacl of this Technology and reuse fresh water.This is because the salts substances in waste water mostly is villaumite, the dissolubility in water is big especially, uses the method for crystallising concentrating, lowering the temperature, high efficiency separation cannot go out salts substances, it is impossible to realize the harmlessness disposing of high-salt wastewater at all.
Based on this, the present invention proposes the new approaches of two sections of intensification-oxygen-rich combustion method organic high-salt wastewaters of harmless treatment Coal Chemical Industry, organic high-salt wastewater is placed in electric furnace, first control heating rate slowly to heat up, and carry out isothermal holding after uniform temperature, make the most aqueous removing of fully volatilizing, hereafter improve programming rate to continue to heat up, when material is in molten condition, in molten bath, blast oxidizing gas by spray gun and carry out the oxygen-enriched combusting of organic cod, realize the harmless treatment of organic cod in organic high-salt wastewater, and will be produced rich in NOX, SOXThe purified process with the flue gas of HCl noxious substance, finally realizes the harmlessness disposing of the organic high-salt wastewater of Coal Chemical Industry, and institute's invented technology is simple to operate, has preferable prospects for commercial application.
Summary of the invention
The present invention is achieved through the following technical solutions:
(1) being inserted by organic for Coal Chemical Industry high-salt wastewater and carry out two sections of intensifications in electric furnace, concrete intensification is set to: 1 DEG C-5 DEG C/min of first paragraph heating rate, is incubated 60-120min after being warming up to 100-120 DEG C；Second segment heating rate is 15 DEG C-35 DEG C/min, is incubated 30-90min after being warming up to 1450-1500 DEG C；
(2) after temperature rises to 1450-1500 DEG C, material is the most melted, blasts oxidizing gas and carries out the oxygen-enriched combusting of organic cod in organic high-salt wastewater, hold time as 30-90min in molten bath；
(3) burn discharged NOX, SOXEntering air with the flue gas of HCl noxious substance after purified process, in electric furnace, melted abraum salt is then changed into nontoxic solid waste after pouring out.
Coal Chemical Industry organic high-salt wastewater COD content in described step (1) is more than 500mg/L；
It is 0.1-2MPa that oxidizing gas in described step (2) blasts pressure.
The present invention utilizes organic cod in organic high-salt wastewater to be readily burned the feature of gasification, a kind of method proposing two sections of intensification-oxygen-rich combustion method organic high-salt wastewaters of harmless treatment Coal Chemical Industry, to realize the harmlessness disposing of the organic high-salt wastewater of Coal Chemical Industry, the device have the advantages that with advantage and be:
(1) initially evaporating excess water in organic high-salt wastewater by two sections of intensifications, prevent subsequent high temperature section from processing and water quick-fried generation security incident occurs, process operability is strong.
(2) utilizing organic cod in organic high-salt wastewater to be readily burned the feature of gasification, propose oxygen-rich combustion method and it is carried out harmless treatment, method range is wide, and technological process is short, and operation is simple, has bigger prospects for commercial application.
Accompanying drawing explanation
Fig. 1 is the process chart of the present invention.
Detailed description of the invention
Further illustrate the flesh and blood of the present invention below with example, but present disclosure is not limited to this.
Embodiment 1
Organic for 500Kg Coal Chemical Industry high-salt wastewater (COD content 10000mg/L) is placed in electric furnace, 90min it is incubated after being warming up to 100 DEG C with 1 DEG C/min of electric furnace, the now substantially all evaporation of excess water in high-salt wastewater, hereafter improves electric furnace programming rate, after 15 DEG C/min is warming up to 1500 DEG C, spray gun is inserted in molten bath and blast oxygen, it is 0.2MPa that oxygen blasts pressure, carries out organic oxygen-enriched combusting in abraum salt, after insulation 60min, melted abraum salt is dumped into tundish transfer, produced NOX, SOXEntering air with the flue gas of HCl noxious substance after purified process, after melt-combustion processes after testing, abraum salt COD content is 30mg/L, reaches abraum salt discharge COD content standard.
Embodiment 2
Organic for 300Kg Coal Chemical Industry high-salt wastewater (COD content 5686mg/L) is placed in electric furnace, 90min it is incubated after being warming up to 120 DEG C with 3 DEG C/min of electric furnace, the now substantially all evaporation of excess water in high-salt wastewater, hereafter improve electric furnace programming rate, after 18 DEG C/min is warming up to 1500 DEG C, spray gun is inserted in molten bath and blast air and carry out organic oxygen-enriched combusting in abraum salt, it is 1MPa that air blasts pressure, after insulation 60min, melted abraum salt is dumped into tundish transfer, produced NOX, SOXEntering air with the flue gas of HCl noxious substance after purified process, after melt-combustion processes after testing, abraum salt COD content is 17mg/L, reaches abraum salt discharge COD content standard.
Embodiment 3
Organic for 600Kg Coal Chemical Industry high-salt wastewater (COD content 15000mg/L) is placed in electric furnace, 120min it is incubated after being warming up to 120 DEG C with 5 DEG C/min of electric furnace, the now substantially all evaporation of excess water in high-salt wastewater, hereafter improve electric furnace programming rate, after 18 DEG C/min is warming up to 1500 DEG C, spray gun is inserted in molten bath and blast oxygen and carry out organic oxygen-enriched combusting in abraum salt, it is 2MPa that oxygen blasts pressure, after insulation 90min, melted abraum salt is dumped into tundish transfer, produced NOX, SOXEntering air with the flue gas of HCl noxious substance after purified process, after melt-combustion processes after testing, abraum salt COD content is 8mg/L, reaches abraum salt discharge COD content standard.
Claims (6)
1. a kind of method that the invention discloses two sections of intensification-oxygen-rich combustion method organic high-salt wastewaters of harmless treatment Coal Chemical Industry, simple for process, there is preferable prospects for commercial application.
A kind of method of two sections of intensification-oxygen-rich combustion method organic high-salt wastewaters of harmless treatment Coal Chemical Industry, it is characterized in that containing following processing step: organic high-salt wastewater is placed in electric furnace, the most slowly heat up, make the most aqueous carry out volatilization removing, uniform temperature and after the time, improves programming rate, when material is in molten condition, in molten bath, blast oxidizing gas by spray gun and carry out organic oxygen-enriched combusting, produced rich in NOX, SOXAir is entered after purified process with the flue gas of HCl noxious substance.
2. a kind of method that the invention discloses two sections of intensification-oxygen-rich combustion method organic high-salt wastewaters of harmless treatment Coal Chemical Industry, simple for process, there is preferable prospects for commercial application.
According to claim 1, a kind of method of two sections of intensification-oxygen-rich combustion method organic high-salt wastewaters of harmless treatment Coal Chemical Industry, it is characterised in that: handled Coal Chemical Industry organic high-salt wastewater COD content is more than 500mg/L.
3. a kind of method that the invention discloses two sections of intensification-oxygen-rich combustion method organic high-salt wastewaters of harmless treatment Coal Chemical Industry, simple for process, there is preferable prospects for commercial application.
According to claim 1, a kind of method of two sections of intensification-oxygen-rich combustion method organic high-salt wastewaters of harmless treatment Coal Chemical Industry, it is characterised in that: first paragraph intensification is set to 1 DEG C-5 DEG C/min and is warming up to 100-120 DEG C, is incubated 60-120min at a temperature of being somebody's turn to do thereafter.
4. a kind of method that the invention discloses two sections of intensification-oxygen-rich combustion method organic high-salt wastewaters of harmless treatment Coal Chemical Industry, simple for process, there is preferable prospects for commercial application.
According to claim 1, a kind of method of two sections of intensification-oxygen-rich combustion method organic high-salt wastewaters of harmless treatment Coal Chemical Industry, it is characterised in that: second segment intensification is set to 15 DEG C-35 DEG C/min and is warming up to 1450-1500 DEG C, is incubated 30-90min at a temperature of being somebody's turn to do thereafter.
5. a kind of method that the invention discloses two sections of intensification-oxygen-rich combustion method organic high-salt wastewaters of harmless treatment Coal Chemical Industry, simple for process, there is preferable prospects for commercial application.
The method of a kind of two sections of intensification-oxygen-rich combustion method organic high-salt wastewaters of harmless treatment Coal Chemical Industry according to claim 1, it is characterised in that: be passed through oxidizing gas is air, oxygen and both mixed gas, and blasting pressure is 0.1-2MPa.
6. a kind of method that the invention discloses two sections of intensification-oxygen-rich combustion method organic high-salt wastewaters of harmless treatment Coal Chemical Industry, simple for process, there is preferable prospects for commercial application.
The method of a kind of two sections of intensification-oxygen-rich combustion method organic high-salt wastewaters of harmless treatment Coal Chemical Industry according to claim 1, it is characterised in that: produced rich in NOX, SOXAir is entered again after purified process with the flue gas of HCl noxious substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610032928.7A CN105712421A (en) | 2016-01-15 | 2016-01-15 | Method for harmlessly treating coal chemical industry organic high-salinity wastewater by two-stage heating and oxygen-enriched combustion |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610032928.7A CN105712421A (en) | 2016-01-15 | 2016-01-15 | Method for harmlessly treating coal chemical industry organic high-salinity wastewater by two-stage heating and oxygen-enriched combustion |
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| CN105712421A true CN105712421A (en) | 2016-06-29 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002233862A (en) * | 2001-02-05 | 2002-08-20 | Toagosei Co Ltd | Method for treating industrial waste water |
| CN103708669A (en) * | 2014-01-02 | 2014-04-09 | 德州布兰森药业有限公司 | Industrial sewage treatment system |
| CN203784966U (en) * | 2014-04-08 | 2014-08-20 | 大连科林能源工程技术开发有限公司 | High concentration saliferous organic waste liquid recovery chemical intermediate and waste heat using boiler system |
-
2016
- 2016-01-15 CN CN201610032928.7A patent/CN105712421A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002233862A (en) * | 2001-02-05 | 2002-08-20 | Toagosei Co Ltd | Method for treating industrial waste water |
| CN103708669A (en) * | 2014-01-02 | 2014-04-09 | 德州布兰森药业有限公司 | Industrial sewage treatment system |
| CN203784966U (en) * | 2014-04-08 | 2014-08-20 | 大连科林能源工程技术开发有限公司 | High concentration saliferous organic waste liquid recovery chemical intermediate and waste heat using boiler system |
Non-Patent Citations (2)
| Title |
|---|
| 徐茂蓉: ""高浓度有机废液焚烧二次污染物排放特性研究"", 《中国优秀博硕士学位论文全文数据库(硕士) 工程科技I辑》 * |
| 王伟等: "焚烧法处理高浓度有机、含盐废水的研究分析", 《黑龙江环境通报》 * |
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Effective date of registration: 20170825 Address after: 100101 Beijing Chaoyang District Anli Road No. 80 Ma brother Polo building room 1505 Applicant after: Tiandi future (Beijing) Environmental Protection Technology Co., Ltd. Address before: 100029 Beijing city Chaoyang District Beitucheng West Road No. 11 building two layer of urban development Applicant before: World future (Beijing) development in science and technology company limited |
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Application publication date: 20160629 |