CN1189700C - Combustion method and apparatus for waste liquor - Google Patents
Combustion method and apparatus for waste liquor Download PDFInfo
- Publication number
- CN1189700C CN1189700C CNB021458847A CN02145884A CN1189700C CN 1189700 C CN1189700 C CN 1189700C CN B021458847 A CNB021458847 A CN B021458847A CN 02145884 A CN02145884 A CN 02145884A CN 1189700 C CN1189700 C CN 1189700C
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- mentioned
- waste liquid
- combustion furnace
- discharge gas
- combustion
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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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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2206/00—Waste heat recuperation
- F23G2206/10—Waste heat recuperation reintroducing the heat in the same process, e.g. for predrying
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/10—Liquid waste
- F23G2209/101—Waste liquor
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
A combustion apparatus for waste liquor. A combustion furnace 1 in which the waste liquid W is supplied and burned, a heater 12 in which exhaust gas G discharged from the combustion furnace 1 is supplied as heat source, a crystallization can 13 connected to the heater 12 for crystallizing part of the waste liquid W by means of the heat source, and a separator 14 for separating crystal D made of the part of the waste liquid W crystallized by the crystallization can 13 and for supplying the rest to the combustion furnace 1 are provided. The waste liquid W is supplied to and burned in the combustion furnace 1. The waste liquid W is heated by heat of the exhaust gas G from the combustion furnace 1. The part of the waste liquid is crystallized and the rest is supplied to the combustion furnace 1. The device can efficiently utilize energy generated from combustion of waste liquid W. The invention also provides a combustion method for waste liquor using the device.
Description
Technical field
The present invention relates to the waste liquid that a kind of for example burning can not directly be discharged owing to containing organic matter or harmful substance, make the combustion method and the burner of its waste liquid that obtains harmless treatment.
Background technology
Liquid debris is that the major part of waste liquid all is a moisture, all the other are organic matter or inorganic matter, it results from the petro chemical industry is all industrial fields and the civil area of representative, must carry out harmless treatment to the waste liquid that can not directly discharge because for example contain organic matter or harmful substance wherein.And to combustion furnace spraying waste liquid, the high temperature oxidation process that waste liquid is at high temperature burnt is promptly burnt, and to handle be a kind of of above-mentioned harmless treatment, because this method can be handled a large amount of waste liquids, is widely used.
The combustion method that propositions such as present inventor are a kind of as above-mentioned burning disposes waste liquid, promptly control outside wall temperature or stove internal surface temperature, thereby prolong the life-span of the inner lining refractory of combustion furnace inwall in the outer wall section circulation dibenzyl toluene of above-mentioned combustion furnace or the method for macromolecule wet goods thermophore.Promptly; in above-mentioned combustion method; the outer wall section of vertical combustion furnace cylindraceous forms sleeve structure, so that can supply with as above-mentioned thermophore, by controlling the temperature of above-mentioned thermophore; the surface temperature of cool furnace inwall; make temperature within suitable scope, thereby will be coated on the inner lining refractory surface of stove inwall, form the self-protection film from the alkali fusion salt of the alkali composition in the waste liquid; prevent the corrosion of above-mentioned refractory material, prolong its life-span.
But, in above-mentioned combustion furnace, discharge discharge gas earlier by the burning generation of waste liquid from the bottom of combustion furnace, gas is sprayed to alkali lye, dissolve the alkali in this discharge gas, the alkali lye of then spraying in cooling tower is after being cooled off by evaporation latent heat, carry out pump-down process such as dedusting, discharge from chimney at last.On the other hand, will be by injection, the spraying of above-mentioned discharge gas, alkali lye after the alkali dissolving is recovered in the groove that is provided with in the combustion furnace bottom, and a part of alkali lye that circulates, be used for dissolving alkali of discharging gas or the discharge gas that is used for cooling off above-mentioned cooling tower once more, remaining part is discharged to outside the system.But, because temperature is 900 ℃ to 1000 ℃ a high temperature in the stove, so even the temperature of cooled discharge gas of discharging from combustion furnace also reaches the high temperature about 90 ℃, although and effluent air temp is so high, as above-mentioned carry out after the pump-down process such as dedusting from chimney directly row to atmosphere, so the energy that produces during incineration of liquor in combustion furnace may not effectively be utilized, thereby people wish positively to reclaim above-mentioned energy, make it effectively to be utilized.
Summary of the invention
The present invention is based on the problems referred to above, and its purpose is, a kind of incineration of liquor method and burner that can effectively utilize the energy that is produced by incineration of liquor more is provided.
In order to address the above problem and reach the purpose of the invention described above, one of feature of incineration of liquor method of the present invention is, supplying with waste liquid to combustion furnace burns, simultaneously, utilization is by the heat of the gas of above-mentioned combustion furnace discharge, heat above-mentioned waste liquid, make a part of waste liquid crystallization, and the residual fraction after the crystallization is supplied with above-mentioned combustion furnace.In addition, one of feature of waste fluid burning plant of the present invention is, it possesses combustion furnace that the waste liquid of receive supplying with makes its burning, use the gas of discharging from above-mentioned combustion furnace to be connected as the heater of thermal source, with above-mentioned heater and a part of crystallizing tank and separate a part of crystallization the above-mentioned waste liquid that is crystallized out by above-mentioned crystallizing tank of will above-mentioned heated above-mentioned waste liquid crystallization coming out, and the raffinate after will separating is supplied with the seperator of above-mentioned combustion furnace.
Therefore, in above-mentioned combustion method and burner, as thermal source, utilize its heat to add heated effluent with the discharge gas of being discharged by combustion furnace, a part of waste liquid crystallization comes out, and burn and will the raffinate after the crystallization supply with in the combustion furnace.Promptly can utilize the heat energy of giving above-mentioned discharge gas by the combustion zone of the waste liquid in the combustion furnace, reduce waste liquid volume to above-mentioned combustion furnace supply, so can reduce the auxiliary fuel supplied with to combustion furnace for the above-mentioned waste liquid that burns or the consumption of combustion air, perhaps reduce by the discharge gas after the burning of above-mentioned burning generation, simultaneously, can promote combustion furnace with and the densification of ancillary equipment.Here, because the temperature of above-mentioned discharge gas is too high, so it is desirable to, between above-mentioned combustion furnace and heater, be provided with to the gas of discharging and add the discharge gas cooled equipment that water cools off from above-mentioned combustion furnace, thereby to the above-mentioned discharge gas that contains moisture of heater fed, it is added heated effluent as above-mentioned thermal source, carry out crystallization.
Description of drawings
Fig. 1 is the figure of the embodiment of expression the present invention's 1 burner.
Fig. 2 is the figure of the embodiment of expression the present invention's 2 burners.
Among the figure, 1-combustion furnace, 9-dissolver, 12-heater, 13-crystallizing tank, 14-separator, 21-evaporator, W-waste liquid, F-auxiliary fuel, G-exhaust, D-crystallization.
The specific embodiment
Fig. 1 is the figure of the embodiment of expression the present invention's 1 described waste fluid burning plant, below, the structure of this burner is described, simultaneously, in conjunction with the embodiment of the present invention's of this device of explanation use 1 incineration of liquor method.In the present embodiment, combustion furnace 1 forms vertically cylindric, be provided with combustion-supporting pulverizing jet 2 at its top, utilize combustion air, from this combustion-supporting pulverizing jet 2, burn towards auxiliary fuel F such as following combustion furnace 1 internal spray lam-oil, on the circumferencial direction of the shoulder of the combustion furnace 1 around the above-mentioned combustion-supporting pulverizing jet 2, tiltedly be provided with simultaneously to dip down uniformly-spaced and towards the center line of cylindrical shape combustion furnace 1, and to (but in Fig. 1, only expressing 1) a plurality of nozzles 3 of combustion furnace 1 internal spray waste liquid W, utilize the burning of the auxiliary fuel F of above-mentioned combustion-supporting pulverizing jet 2, burn to the waste liquid W of combustion furnace 1 internal spraying from said nozzle 3.
In addition, inner wall section with the above-mentioned combustion furnace 1 of refractory lining, and the sleeve structure that has double wall in outer wall 4 parts adjacent with this refractory material, there is the space that reaches top from the bottom of combustion furnace 1 in portion within it, by being arranged on the cooling device 5 of combustion furnace 1 outside, the supply water that cooling water C promptly feeds can circulate between above-mentioned space and this cooling device 5.Above-mentioned cooling device 5 possesses, the liquid level that the position is higher than the cooling water C that supplies with to the sleeve pipe of above-mentioned outer wall 4 is set, and be used for storing, at the high water level groove 6 of the cooling water C of circulation between the combustion furnace 1, in combustion furnace, supply with the pump 7 of cooling water C and be arranged on the connecting line of above-mentioned high water level groove 6 and pump 7, and be used for the cooler 8 of cool cycles cooling water C from above-mentioned high water level groove 6.Be stored in the cooling water C of high water level groove 6,, get to the above-mentioned space of the sleeve structure that the outer wall 4 of combustion furnace 1 forms by pump 7, self be heated in the time of the above-mentioned refractory material of cooled inner wall part, turn back to high water level groove 6, further be cooled, circulate by cooler 8.
On the other hand, bottom at above-mentioned combustion furnace 1, be provided with dissolver 9 as the discharge gas quench system of present embodiment, about 900 ℃ to 1000 ℃ the high-temperature exhaust air G that the burning of discharging the waste liquid W of passing through combustion furnace 1 inside to above-mentioned dissolver 9 from the bottom of combustion furnace 1 generates, and in above-mentioned dissolver 9, spray alkali lye, be cooled to about 90 ℃, the alkali among the above-mentioned exhaust G is dissolved simultaneously, supplies with separator 10.At this moment, as above-mentioned, injected alkali lye dissolves the alkali among the exhaust G in dissolver 9, and is recovered in the container 11 of dissolver 9 bottoms, and part recovery liquid circulates, be used for dissolving once more the alkali of exhaust G, on the other hand, utilize the heat of vaporization of discharging gas G, the portion of water in the injected alkali lye produces steam and mist, mist M wherein is separated in above-mentioned separator 10, gets back in the container 11.In addition, can not adopt as the above-mentioned method of in dissolver 9, spraying alkali lye to discharge gas G, and adopt the outlet that the discharge gas G that comes out from combustion furnace 1 is set on than the low position of the alkali lye liquid level in the container 11 of dissolver 9 bottoms, and will discharge that gas G is blown into above-mentioned alkali lye and the method for discharging is carried out its alkali dissolving and cool off.
In addition, as above-mentionedly in dissolver 9, be cooled, and by separator 10, discharge gas G behind the separation mist composition, supply with heater 12 as the heater thermal source, above-mentioned heater 12 is connected with crystallizing tank 13, and crystallizing tank 13 crystallizes out the part of the waste liquid W of heated combustion furnace 1, simultaneously, above-mentioned crystallizing tank 13 and the crystallization D that is used to separate by the above-mentioned waste liquid W part of above-mentioned crystallizing tank 13 crystallizations, and the seperator 14 that residue waste liquid W supplies with above-mentioned combustion furnace 1 connected.Promptly heating tube is set in above-mentioned heater 12 inside, be stored in waste liquid W in the crystallizing tank 13 by pump 15 to the heater internal feed, and be circulated to crystallizing tank 13, simultaneously, around the heating tube of heater 12 inside, supply with above-mentioned discharge gas G, be used to heat the waste liquid W that in pipe, flows.Here, by add entry (alkali lye) in the dissolver 9 as above-mentioned exhaust cooling device, above-mentioned discharge gas G contains the steam about 50vol% approximately, and the heat that the heating of 12 pairs of waste liquid W of heater loses during only by this steam condensation carries out.In addition, the condensed water of above-mentioned steam is got back in the said vesse 11 of dissolver 9.
So as above-mentioned waste liquid W of getting back in the crystallizing tank 13, by the heating evaporation of its moisture, a part produces crystallization.Here, with the waste liquid W of a part of crystallization, by pump 16, extract out, supply with above-mentioned seperator 14, in seperator 14, utilize method fractional crystallization D such as filtration, simultaneously, residual filtrate is residue waste liquid W, is temporary in filtrate tank 17, and with a part of filtrate cycle in crystallizing tank 13, simultaneously, utilize pump 18, supply with residue waste liquid W, and spray to above-mentioned combustion furnace 1 inside and burn to the said nozzle 3 of combustion furnace 1.In addition, the discharge gas G of heating waste liquid W through venturi scrubber 19, is delivered to absorption tower 20 in heater 12, absorb, remove dust, NOx, SOx etc. after, to airborne release.
Therefore, have in the combustion method and burner of waste liquid W of embodiment 1 of said structure, because be to what above-mentioned combustion furnace 1 was supplied with, the heat of the discharge gas G that utilizes the waste liquid W in the burning combustion furnace 1 and produce, the above-mentioned waste liquid W of heating in heater 12, the above-mentioned waste liquid W of a crystallization part in crystallizing tank 13, the waste liquid W behind the above-mentioned crystallization D of separation in seperator 14 then, so, can reduce volume or the amount of supplying with the waste liquid W that combustion furnace 1 burns behind the above-mentioned crystallization D of separating.Therefore, can reduce for the waste liquid W of burning, auxiliary fuel F or combustion air consumption to combustion-supporting pulverizing jet 2 supplies, thereby can improve the economy of the W that disposes waste liquid, simultaneously, can reduce the amount of the discharge gas G that produces by burning, thus capacity or the particularly amount of minimizing carbon dioxide with which of finally discharging can be reduced to atmosphere, thus can effectively utilize the heat that produces by burning more.In addition, as above-mentioned, by reducing the amount of the waste liquid W of supplying with to combustion furnace 1, can reduce the volume of combustion furnace 1 self, its ancillary equipment also can use the equipment of miniaturization simultaneously, simultaneously by reducing capacity, the exhaust equipment that is used to handle above-mentioned absorption tower 20 grades of above-mentioned exhaust G also can miniaturization, its result realizes integrally-built compactness, can realize the burning of more cost effective waste liquid W.
But, in the combustion furnace 1 of above-mentioned burner, use combustion-supporting pulverizing jet 2, when utilizing auxiliary fuel F such as lam-oil to burn, though depend on the quantity combusted of waste liquid W self, but as mentioned above, temperature in the combustion furnace 1 reaches 900 ℃～1000 ℃, and discharge is equivalent to the high-temp combustion exhaust G of said temperature, when containing alkali in this waste liquid W in addition,, discharge gas and also contain alkali because as above-mentioned, if, then cause the crystallized temperature of crystallization waste liquid W too high so the exhaust G that will have above-mentioned high temperature and contain alkali directly imports heater 12, or prematurely attached to the problem of the damage of the main body of this heater 12 or above-mentioned heating tube etc. and aforementioned body or heating tube.Therefore, in the present embodiment, as adding the cooling device of water cooling from the discharge gas G of combustion furnace 1 discharge, between above-mentioned combustion furnace 1 and heater 12, dissolver 9 is set, utilize above-mentioned dissolver 9, add the exhaust G that water cooling is discharged from combustion furnace 1, simultaneously, use alkali lye as the alkali among the above-mentioned moisture dissolving exhaust G, in addition, utilize the above-mentioned method that in high-temperature exhaust air G, adds moisture, discharge gas G with the above-mentioned water vapour that contains evaporation, in heater 12, heat waste liquid W, and thus, high-temperature exhaust air G is cooled to about 90 ℃, make temperature reduce to the temperature that is fit to the waste liquid W crystallization, simultaneously, remove the alkali among the exhaust G, can prevent the damage of heater 12 etc.
Secondly, Fig. 2 is the burner of the waste liquid W of the expression embodiment of the invention 2, the part identical with the embodiment that represents among Fig. 11, and the symbol that mark is identical has omitted explanation.Promptly in this embodiment 2, the crystallizing tank 13 of alternate embodiment 1, evaporator 21 is connected in heater 12, utilize the embodiment 2 of the waste liquid W combustion method of this device to be characterised in that, utilize pump 15, waste liquid W circulates between this evaporimeter 21 and heater 12, thus, the exhaust G that will produce from combustion furnace 1 is as thermal source, by its heat, in heater 12, heat waste liquid W, and carry out evaporation and concentration at evaporator 21, to concentrate the waste liquid W that obtains by said method then and supply with combustion furnace 1, burn.Here, above-mentioned evaporator 21 is connected with the said nozzle 3 of combustion furnace 1 by pump 22, the waste liquid W that obtains concentrating in evaporator 21 can be to this combustion furnace 1 internal spray, simultaneously by condenser 23, connect vavuum pump 24 at this evaporator 21, make these evaporator 21 inside be in decompression state.
In addition, in burner and combustion method as the waste liquid W of the above embodiments 2, with the exhaust heat of discharging from combustion furnace 1 as thermal source, waste liquid W is heated to more than 50 ℃ in heater 12, and in evaporator 21, circulate, by vavuum pump 24, these evaporator 21 inside are in decompression state, and the water evaporates in this waste liquid W is concentrated simultaneously.In addition, supply with the waste liquid W that is concentrated by said method to combustion furnace 1, burn, so, in embodiment 2, can reduce volume and the quantity of supplying with the waste liquid W that combustion furnace 1 burns, and reduce the consumption of auxiliary fuel F or combustion air thus, and improve economy by the densification of burner, and or suppress emission of carbon-dioxide more by the minimizing of burning and gas-exhausting amount, can effectively utilize fuel energy and prevent the greenhouse effect of the earth.In addition, in the present embodiment, exhaust enters heater 12 by being cooled in the dissolver 9 as the exhaust cooling device, so, waste liquid W can be warming up to the temperature more than 50 ℃ that is fit to evaporation, in evaporator 21, circulate, simultaneously, by this dissolver 9, alkali in the exhaust is dissolved, so can prevent the damage of heater.
As mentioned above, according to incineration of liquor method of the present invention and burner thereof, by following method, be about to the thermal source of the discharge gas of burning waste liquid generation in combustion furnace as heater, utilize crystallizing tank, crystallization part waste liquid, residual fraction is supplied with combustion furnace, or utilize evaporator evaporation and concentration waste liquid, supply with the method for combustion furnace, can reduce and supply with the waste liquid volume that combustion furnace burns, and reduce burning required auxiliary fuel or combustion air consumption simultaneously, can compactly arrange burner simultaneously, can make the burning of waste liquid handle economization, and reduce capacity, can be by suppressing emission of carbon-dioxide, prevent global warming, and can effectively utilize the energy that produces by burning more.
Claims (4)
1, a kind of combustion method of waste liquid is characterized in that, supplies with waste liquid to combustion furnace and burns, simultaneously, utilization is heated above-mentioned waste liquid and is made a part of waste liquid crystallizationization by the heat of the discharge gas of above-mentioned combustion furnace discharge, then the residual fraction after the crystallization is supplied with above-mentioned combustion furnace.
2, the combustion method of waste liquid according to claim 1 is characterized in that, supplies water to the above-mentioned discharge gas of discharging from above-mentioned combustion furnace, makes it cooling, utilizes the discharge gas of above-mentioned moisture vapor to heat above-mentioned waste liquid simultaneously.
3, a kind of waste fluid burning plant is characterized in that possessing the combustion furnace that receives the waste liquid of supplying with and make its burning, uses the discharge gas of discharging from above-mentioned combustion furnace to be connected as the heater of thermal source, with above-mentioned heater and will above-mentioned heated above-mentioned waste liquid crystallization the come out crystallizing tank of a part and the raffinate after a part of crystallization separating the above-mentioned waste liquid that is crystallized out by above-mentioned crystallizing tank also will separate are supplied with the seperator of above-mentioned combustion furnace.
4, waste fluid burning plant according to claim 3, it is characterized in that, between above-mentioned combustion furnace and heater, be provided for the discharge gas cooled equipment that supplies water and cool off to the discharge gas of discharging from above-mentioned combustion furnace, to the above-mentioned discharge gas of moisture that contains of above-mentioned heater fed as above-mentioned thermal source.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002029733 | 2002-02-06 | ||
| JP2002029733A JP2003232511A (en) | 2002-02-06 | 2002-02-06 | Combustion method and combustion apparatus for waste liquid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1436956A CN1436956A (en) | 2003-08-20 |
| CN1189700C true CN1189700C (en) | 2005-02-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021458847A Expired - Lifetime CN1189700C (en) | 2002-02-06 | 2002-10-16 | Combustion method and apparatus for waste liquor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2003232511A (en) |
| KR (1) | KR100501055B1 (en) |
| CN (1) | CN1189700C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4542190B1 (en) * | 2009-03-11 | 2010-09-08 | 月島環境エンジニアリング株式会社 | Waste combustion power generation method and combustion equipment therefor |
| CN102042602B (en) * | 2009-10-16 | 2013-07-24 | 上海煜工环保科技有限公司 | Processing method and device for incinerating toxic waste liquid by smoke concentration and gasification |
| KR100967747B1 (en) | 2010-03-24 | 2010-07-05 | 노영수 | Process and system for processing liquid waste |
| CN102418930A (en) * | 2011-11-17 | 2012-04-18 | 苏州新区星火环境净化有限公司 | A system for combined treatment of high-concentration organic wastewater by molecule stripping and plasma combustion furnace |
| CN106838936B (en) * | 2017-03-08 | 2018-12-11 | 南通三圣石墨设备科技股份有限公司 | A kind of secondary treatment method of sodium method flue gas desulfurization liquid |
| CN112939316A (en) * | 2021-02-25 | 2021-06-11 | 中节能(衡水)环保能源有限公司 | Fixed-discharge waste heat recycling system and leachate concentrated water heating and back-spraying system |
| CN114890604B (en) * | 2022-06-21 | 2023-04-07 | 江苏省环境工程技术有限公司 | System and method for treating salt-containing waste liquid based on in-liquid incineration technology |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5712886A (en) * | 1980-06-25 | 1982-01-22 | Tsukishima Kikai Co Ltd | Disposal of waste water in production of acrylonitrile |
| JPS5719079A (en) * | 1980-07-07 | 1982-02-01 | Hidemasa Tsuruta | Disposal of na+-contg. waste liquid |
| JPH09327688A (en) * | 1996-06-10 | 1997-12-22 | Crystal Eng Kk | Method and apparatus for treating organic matter waste solution containing inorganic salt in high concentration |
-
2002
- 2002-02-06 JP JP2002029733A patent/JP2003232511A/en active Pending
- 2002-09-02 KR KR10-2002-0052447A patent/KR100501055B1/en active IP Right Grant
- 2002-10-16 CN CNB021458847A patent/CN1189700C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| KR100501055B1 (en) | 2005-07-18 |
| KR20030067458A (en) | 2003-08-14 |
| CN1436956A (en) | 2003-08-20 |
| JP2003232511A (en) | 2003-08-22 |
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