CN103017177A - Incineration disposal method for high-salinity wastewater - Google Patents
Incineration disposal method for high-salinity wastewater Download PDFInfo
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- CN103017177A CN103017177A CN2012105730340A CN201210573034A CN103017177A CN 103017177 A CN103017177 A CN 103017177A CN 2012105730340 A CN2012105730340 A CN 2012105730340A CN 201210573034 A CN201210573034 A CN 201210573034A CN 103017177 A CN103017177 A CN 103017177A
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Abstract
The invention discloses an incineration disposal method for high-salinity wastewater. The high-salinity wastewater is sprayed into a combustion chamber I after being atomized by utilizing a waste liquid spray gun through compressed air. In the combustion chamber I, the consumption of auxiliary fuel and air supply volume are controlled through temperature feedback to keep furnace temperature at 600-700 DEG C. Smoke generated in the combustion chamber I enters a combustion chamber II under the action of an induced draft fan; in the combustion chamber II, the consumption of the auxiliary fuel and the air supply volume are controlled through the temperature feedback to keep the furnace temperature at 1100-1200 DEG C, and moreover, the standing time of the smoke is longer than 2 seconds. Smoke coming out from the combustion chamber II enters a waste heat boiler, and the heat of the smoke is recycled through heat exchange. Smoke coming out from the waste heat boiler is respectively dedusted and deacidified through a bag type dust collector and a smoke deacidification unit, and then, is discharged on the standard. According to the incineration disposal method for the high-salinity wastewater, not only can saline matter in the high-salinity wastewater be separated out through the evaporation of water without coking but also hazardous organic matters in the smoke can be fully destroyed by fire.
Description
Technical field
The present invention relates to environmental protection technical field, specifically, the present invention relates to a kind of high slat-containing wastewater incineration treatment method.
Background technology
High slat-containing wastewater refers to contain organic matter and total dissolved solidss TDS(Total Dissolved Solid at least) mass fraction more than or equal to 3.5% waste water, comprise high saliferous sanitary wastewater and high saliferous industrial wastewater.Be mainly derived from the collection processing of industrial production, domestic water and the food processing factory, pharmaceutical factory, chemical plant and the oil and natural gas that directly utilize seawater etc.In these waste water except containing a large amount of inorganic salts, such as Cl
-, S
2O
4 -, Na
+, Ca
2 +Outside the plasma, also contain organic pollution, belong to hazardous waste, must could discharge after treatment.
At present, burning method commonly used is processed high slat-containing wastewater, and high slat-containing wastewater is sprayed in the incinerator by spray gun, utilizes the heat of auxiliary fuel to destroy the harmful organic substance in the waste water by fire processing.This technique mainly comprises incinerator, waste heat recovery apparatus, fume treatment auxiliary and fume emission equipment etc., and typical processing procedure is: utilize compressed air or steam, spray into incinerator after waste water is atomized by spray gun; In incinerator, by increasing auxiliary fuel and air feed measure, keep the interior incineration temperature of stove at 900-1200 ℃; By waste heat recovery apparatus, adopt waste heat boiler or heat exchanger from incinerator high-temperature flue gas out more, the heat in the flue gas is recycled, reduce simultaneously the temperature of flue gas; Enter cleaner and deacidification equipment from waste heat recovery apparatus flue gas out, carry out the processing of flue gas; The flue gas of processing is by air-introduced machine, through the chimney qualified discharge.
Because the fusing point of contained salt is many at 750-900 ℃, for example in the high slat-containing wastewater: the NaCl fusing point is 801 ℃, Na
2SO
4Fusing point is 884 ℃, and the CaCl2 fusing point is 782 ℃, Na
2CO
3Fusing point is 851 ℃, and the KCl fusing point is 770 ℃ etc., so when flue-gas temperature during up to 900-1200 ℃, these salts mostly are molten condition, and is reduced to its fusing point when following when temperature, again easy crystallization.Therefore, the present problem that exists of this technology is:
(1) in the burning process, the salinity in the waste water sticks on the incinerator inner wall easily, causes the incinerator coking;
(2) salt content is higher in the flue gas of burning generation, and meeting crystallization in temperature reduction process causes waste-heat recovery device and fume treatment auxiliary to stop up, and affects normal continuous operation of technique;
(3) salt content in the waste water of flue gas processing generation is still higher, need to further enter the stove burning disposal.
Defective for prior art exists proposes the present invention.
Summary of the invention
In order to overcome the deficiency of existing high slat-containing wastewater incineration treatment technology, the invention provides a kind of high slat-containing wastewater incineration treatment method.The method adopts combustion chamber and dual firing chamber's two-stage combustion, by the Incineration circumstances in the different combustion chambers of accurate control, the salinity in the high slat-containing wastewater is separated out and noncoking by the evaporation of moisture, the harmful organic substance in the flue gas fully can be destroyed by fire again.
The technical solution adopted for the present invention to solve the technical problems is: a kind of high slat-containing wastewater incineration treatment method, contain following main processing procedure:
High slat-containing wastewater utilizes the waste liquid spray gun, and is indoor by spraying into a combustion after the compressed air atomizing.Indoor in a combustion, by temperature feedback control auxiliary fuel consumption, wind supply quantity, make the interior temperature of stove maintain 600-700 ℃.With this understanding, the evaporation of moisture in the high slat-containing wastewater, salt analyze, and the salinity of separating out is loose shape, are difficult for sticking to a combustion chamber interior walls, and fall in the slag remover of being located at bottom, a combustion chamber.
Bottom, one combustion chamber is provided with dry slag-removing machine, by motor-driven, continuously lime-ash is transported out.
The flue gas that one combustion chamber produces enters dual firing chamber under the effect of air-introduced machine, in dual firing chamber, control auxiliary fuel consumption, wind supply quantity by temperature feedback, make to maintain 1100-1200 ℃ in the stove, and gas residence time made in the flue gas and must fully be destroyed by fire by harmful organic substance greater than 2 seconds.
Enter waste heat boiler from dual firing chamber's flue gas out, by heat exchange, its heat is recycled, reduce operating cost.
Carry out flue gas from waste heat boiler flue gas out by sack cleaner and deacidifying flue gas device and process, carry out respectively dedusting and depickling.
Last flue gas enters chimney by air-introduced machine, qualified discharge.
Relatively more existing high heating value burning process, beneficial effect of the present invention is specific as follows:
1. a combustion is indoorly accurately controlled Incineration circumstances in the stove by feedback device, makes temperature in the stove be lower than the fusing point of salinity, makes salinity be easy to separate out and noncoking, and the salinity clearance is higher;
2. the salinity of separating out is carried by dry slag-removing machine, has avoided the again dissolving of salinity;
3. pass through high temperature incineration in the dual firing chamber, and enough time of staying are arranged, the harmful organic substance in the high slat-containing wastewater is fully destroyed by fire;
4. salt content is lower in the flue gas of two-stage burning generation, can not occur in flue gas waste heat recovery apparatus and the fume treatment auxiliary stopping up because of the salinity crystallization, and the waste water that the flue gas processing produces need not to reenter the stove burning.
Description of drawings
When considered in conjunction with the accompanying drawings, by the following detailed description of reference, can more completely understand better the present invention and learn easily wherein many advantages of following, but accompanying drawing described herein is used to provide a further understanding of the present invention, consist of a part of the present invention, illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of to improper restriction of the present invention, wherein:
Fig. 1 is that present device forms schematic diagram;
Fig. 2 is a combustion indoor temperature operating conditions schematic diagram;
Fig. 3 is temperature case control schematic diagram in the dual firing chamber;
1-dry slag-removing machine, 2-one combustion chamber, 3-dual firing chamber, 4-waste heat boiler, 5-sack cleaner, 6-extracting tower, 7-air-introduced machine, 8-chimney.
The specific embodiment
Below in conjunction with accompanying drawing 1 to Fig. 3 embodiments of the invention are described.
Embodiment 1:
As shown in Figure 1, high slat-containing wastewater incineration treatment method capital equipment of the present invention comprises: a combustion chamber 2, dual firing chamber 3, dry slag-removing machine 1, waste heat boiler 4, sack cleaner 5, extracting tower 6, air-introduced machine 7 and chimney 8, by flue UNICOM, whole system keeps little negative pressure operation between each equipment.
Step of the present invention is: high salt bearing liquid wastes is by being located at the spray gun at combustion 2 tops, chamber, sprays into a combustion chamber 2 after utilizing compressed air atomizing.One combustion chamber 2 arranges bumer of light fuel and air feed system, makes the interior temperature of stove maintain 600-700 ℃, and high slat-containing wastewater is fully evaporated.The salinity of separating out is recycled or landfill after falling into dry slag-removing machine 1 discharge of being located at combustion 2 bottoms, chamber.The steam that the waste water evaporation produces and harmful organic substance enter dual firing chamber 3 with flue gas and further burn, and dual firing chamber's 3 interior flue-gas temperatures are controlled at 1100-1200 ℃, and make gas residence time greater than 2 seconds, so that the harmful organic substance in the flue gas fully destroys by fire.Enter waste heat boiler 4 from dual firing chamber 3 high-temperature flue gas out, to the in addition fully recycling of wherein heat, to save operating cost.Enter sack cleaner 5 from waste heat boiler 4 flue gas out, flue dust is wherein removed, removing efficient can be up to 99.9%.Enter again extracting tower 6 by sack cleaner 5 flue gas out, fully remove wherein sour gas by modes such as chemical reaction and Physical Absorption, meet standard limit of smog release.Last flue gas enters chimney 8, qualified discharge by air-introduced machine 7.
Embodiment 2:
As shown in Figure 2, be the indoor 2 temperature cases control of combustion schematic diagram.One combustion 2 exhanst gas outlet positions, chamber are provided with temperature sensor, and the flue-gas temperature T1 in the Real Time Monitoring one combustion chamber 2 utilizes the fuel delivery of interlocked control burner and the wind supply quantity of blower fan.When T1 was positioned at 600-700 ℃ of scope, fuel delivery and wind supply quantity remained unchanged.When T1＜600 ℃, temperature is excessively low in the stove, is unfavorable for the high slat-containing wastewater evaporation, increases fuel delivery and wind supply quantity this moment.When T1＞700 ℃, excess Temperature in the stove, there is the danger of high-temperature fusion in the salinity in the high slat-containing wastewater, reduces fuel delivery and wind supply quantity this moment.
Embodiment 3:
As shown in Figure 3, be dual firing chamber's 3 interior temperature case control schematic diagrames.Dual firing chamber 3 exhanst gas outlet positions are provided with temperature sensor, and the flue-gas temperature T2 in the Real Time Monitoring dual firing chamber 3 utilizes the fuel delivery of interlocked control burner and the wind supply quantity of blower fan.When T2 was positioned at 1100-1200 ℃ of scope, fuel delivery and wind supply quantity remained unchanged.When T2＜1100 ℃, temperature is excessively low in the stove, is unfavorable for that the harmful organic substance in the high slat-containing wastewater fully destroys by fire, increases fuel delivery and wind supply quantity this moment.When T2＞1200 ℃, excess Temperature in the stove exist the risk that nitrogen oxides in effluent increases, and economy is relatively poor, reduces fuel delivery and wind supply quantity this moment.
As mentioned above, embodiments of the invention are explained, but as long as not breaking away from fact inventive point of the present invention and effect can have a lot of distortion, this will be readily apparent to persons skilled in the art.Therefore, such variation also all is included within protection scope of the present invention.
Claims (3)
1. a high slat-containing wastewater incineration treatment method is characterized in that, may further comprise the steps:
1) high slat-containing wastewater is by being located at the spray gun at a combustion top, chamber, sprays into a combustion chamber after utilizing compressed air atomizing; Indoor bumer of light fuel and the air feed system of arranging of one combustion makes a combustion indoor temperature maintain 600-700 ℃, and high slat-containing wastewater is fully evaporated; The salinity of separating out is recycled or landfill after falling into the dry slag-removing machine discharge of being located at a combustion bottom, chamber;
2) steam that produces of high slat-containing wastewater evaporation and harmful organic substance enter dual firing chamber with flue gas and further burn, and flue-gas temperature is controlled at 1100-1200 ℃ in the dual firing chamber, and makes gas residence time greater than 2 seconds, so that the harmful organic substance in the flue gas fully destroys by fire;
3) enter waste heat boiler from dual firing chamber's high-temperature flue gas out, to the in addition fully recycling of wherein heat;
4) enter sack cleaner from waste heat boiler flue gas out, flue dust is wherein removed;
5) enter again extracting tower by sack cleaner flue gas out, remove sour gas wherein, meet standard limit of smog release;
6) last flue gas enters chimney by air-introduced machine, qualified discharge.
2. a kind of high slat-containing wastewater incineration treatment method according to claim 1 is characterized in that, wherein, in the step 1), one combustion exhanst gas outlet position, chamber is provided with temperature sensor, and the indoor flue-gas temperature T1 of Real Time Monitoring one combustion utilizes the fuel delivery of interlocked control burner and the wind supply quantity of blower fan; When T1 was positioned at 600-700 ℃ of scope, fuel delivery and wind supply quantity remained unchanged; When T1＜600 ℃, increase fuel delivery and wind supply quantity; When T1＞700 ℃, reduce fuel delivery and wind supply quantity.
3. a kind of high slat-containing wastewater incineration treatment method according to claim 1 is characterized in that, wherein, step 2) in, dual firing chamber exhanst gas outlet position is provided with temperature sensor, and the flue-gas temperature T2 in the Real Time Monitoring dual firing chamber utilizes the fuel delivery of interlocked control burner and the wind supply quantity of blower fan; When T2 was positioned at 1100-1200 ℃ of scope, fuel delivery and wind supply quantity remained unchanged; When T2＜1100 ℃, increase fuel delivery and wind supply quantity; When T2＞1200 ℃, reduce fuel delivery and wind supply quantity.
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| CN2012105730340A CN103017177A (en) | 2012-12-25 | 2012-12-25 | Incineration disposal method for high-salinity wastewater |
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| CN2012105730340A CN103017177A (en) | 2012-12-25 | 2012-12-25 | Incineration disposal method for high-salinity wastewater |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277803A (en) * | 2013-05-13 | 2013-09-04 | 江苏宏图洁环保工程设备有限公司 | Salty waste water incineration disposal system and disposal method thereof |
| CN104344408A (en) * | 2014-11-04 | 2015-02-11 | 宜兴市智博环境设备有限公司 | Salt-containing waste liquid combustion and heat energy recycling system and process |
| CN105169815A (en) * | 2015-09-06 | 2015-12-23 | 中国石油集团东北炼化工程有限公司吉林设计院 | Method for dedusting high temperature flue gas of high-salt waste liquid incinerator |
| CN105605590A (en) * | 2016-03-14 | 2016-05-25 | 江正云 | Vertical secondary combustion chamber structure for medical waste incineration system |
| CN106044902A (en) * | 2016-07-20 | 2016-10-26 | 江苏省环科院环境科技有限责任公司 | System and method for treating high-salt-content organic waste liquid by virtue of disc drier |
| CN106745076A (en) * | 2016-11-21 | 2017-05-31 | 大唐国际化工技术研究院有限公司 | A kind of method that Industrial Wastewater Treatment is produced carnallite resource |
| CN106989404A (en) * | 2017-04-20 | 2017-07-28 | 南通博泰美术图案设计有限公司 | The incinerating method of the organic mixed waste liquor of saliferous |
| WO2019075956A1 (en) * | 2017-10-20 | 2019-04-25 | 珠海市云筒环保科技有限公司 | Incinerator for waste treatment and waste treatment system |
| CN109775785A (en) * | 2017-11-15 | 2019-05-21 | 江苏金牛环保工程设备有限公司 | A kind of high-salt wastewater burns desalting system and its processing method |
| CN109775786A (en) * | 2017-11-15 | 2019-05-21 | 江苏金牛环保工程设备有限公司 | A kind of high-salt wastewater burns desalting system and its processing method |
| CN113087327A (en) * | 2021-04-22 | 2021-07-09 | 中关村至臻环保股份有限公司 | Oil sludge treatment system |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103277803A (en) * | 2013-05-13 | 2013-09-04 | 江苏宏图洁环保工程设备有限公司 | Salty waste water incineration disposal system and disposal method thereof |
| CN103277803B (en) * | 2013-05-13 | 2015-12-02 | 江苏宏图洁环保工程设备有限公司 | A kind of brine waste burning processing system and processing method thereof |
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| CN105169815A (en) * | 2015-09-06 | 2015-12-23 | 中国石油集团东北炼化工程有限公司吉林设计院 | Method for dedusting high temperature flue gas of high-salt waste liquid incinerator |
| CN105605590A (en) * | 2016-03-14 | 2016-05-25 | 江正云 | Vertical secondary combustion chamber structure for medical waste incineration system |
| CN106044902A (en) * | 2016-07-20 | 2016-10-26 | 江苏省环科院环境科技有限责任公司 | System and method for treating high-salt-content organic waste liquid by virtue of disc drier |
| CN106745076A (en) * | 2016-11-21 | 2017-05-31 | 大唐国际化工技术研究院有限公司 | A kind of method that Industrial Wastewater Treatment is produced carnallite resource |
| CN106745076B (en) * | 2016-11-21 | 2019-02-12 | 大唐国际化工技术研究院有限公司 | A method of by the produced carnallite recycling of Industrial Wastewater Treatment |
| CN106989404A (en) * | 2017-04-20 | 2017-07-28 | 南通博泰美术图案设计有限公司 | The incinerating method of the organic mixed waste liquor of saliferous |
| WO2019075956A1 (en) * | 2017-10-20 | 2019-04-25 | 珠海市云筒环保科技有限公司 | Incinerator for waste treatment and waste treatment system |
| CN109775785A (en) * | 2017-11-15 | 2019-05-21 | 江苏金牛环保工程设备有限公司 | A kind of high-salt wastewater burns desalting system and its processing method |
| CN109775786A (en) * | 2017-11-15 | 2019-05-21 | 江苏金牛环保工程设备有限公司 | A kind of high-salt wastewater burns desalting system and its processing method |
| CN113087327A (en) * | 2021-04-22 | 2021-07-09 | 中关村至臻环保股份有限公司 | Oil sludge treatment system |
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Application publication date: 20130403 |