CN114110622A - Collaborative incineration method for drying salt-containing water - Google Patents
Collaborative incineration method for drying salt-containing water Download PDFInfo
- Publication number
- CN114110622A CN114110622A CN202111309179.5A CN202111309179A CN114110622A CN 114110622 A CN114110622 A CN 114110622A CN 202111309179 A CN202111309179 A CN 202111309179A CN 114110622 A CN114110622 A CN 114110622A
- Authority
- CN
- China
- Prior art keywords
- salt
- drying
- containing water
- flue gas
- incineration
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001035 drying Methods 0.000 title claims abstract description 41
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 150000003839 salts Chemical class 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 25
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003546 flue gas Substances 0.000 claims abstract description 33
- 238000002485 combustion reaction Methods 0.000 claims abstract description 26
- 239000002918 waste heat Substances 0.000 claims abstract description 18
- 239000000428 dust Substances 0.000 claims abstract description 16
- 238000011084 recovery Methods 0.000 claims abstract description 14
- 239000002699 waste material Substances 0.000 claims abstract description 14
- 238000005406 washing Methods 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 6
- 239000007921 spray Substances 0.000 claims description 8
- 238000007599 discharging Methods 0.000 claims description 5
- 239000010419 fine particle Substances 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 239000012267 brine Substances 0.000 claims 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 3
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 abstract description 2
- 239000002920 hazardous waste Substances 0.000 abstract description 2
- 238000004056 waste incineration Methods 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 abstract 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
- F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
- F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/442—Waste feed arrangements
- F23G5/446—Waste feed arrangements for liquid waste
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
- F23G5/46—Recuperation of heat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/04—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material using washing fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- 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
-
- 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
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Treating Waste Gases (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses a collaborative incineration method for drying salt-containing water, which realizes incineration treatment of waste and collaborative incineration treatment for drying salt-containing water simultaneously through the steps of incineration, secondary combustion, waste heat recovery, drying treatment, dust removal, washing and the like. The invention has the advantages that: high-temperature flue gas generated in the combustion process is used as a heating heat source in a drying device, salt-containing water generated in the tail end washing or production process of an incineration device is dried, the salt water is changed into solid salt, so that the whole incineration system does not generate secondary pollution waste water, and meanwhile, the function of the drying device meets the requirement of a hazardous waste incineration dioxin control process that the temperature of the flue gas is reduced from 500 ℃ to 200 ℃ within 1 second.
Description
Technical Field
The invention relates to the field of solid, liquid and gas waste treatment, in particular to a collaborative incineration method for drying salt-containing water.
Background
Solid, liquid and gas waste treatment is a great industrial problem, and in order to meet the requirements of hazardous waste disposal process in the prior art, the flue gas is quenched from 500 ℃ to 200 ℃, namely, clear water is sprayed to achieve the purpose of quenching and cooling. The current disposal process not only wastes energy, but also increases the treatment cost. The prior art lacks a method for treating waste by co-combustion, which can effectively utilize the waste heat of flue gas to avoid secondary pollution.
Disclosure of Invention
The invention aims to solve the technical problem of how to realize waste energy utilization in the waste treatment process, and provides a collaborative incineration method for drying salt-containing water aiming at the technical problem to be solved.
In order to achieve the purpose, the invention provides the following technical scheme: a collaborative incineration method for drying salt-containing water is used for realizing the drying incineration of the salt-containing water through the following steps:
firstly, putting the waste into an incinerator for primary combustion;
secondly, secondary combustion, namely inputting the flue gas after the primary combustion into a secondary combustion furnace for secondary combustion;
step three, waste heat recovery, namely, carrying out waste heat recovery on the high-temperature flue gas generated in the secondary combustion process by using a waste heat recovery device;
step four, drying, namely introducing the medium-temperature flue gas output in the step three into a drying device through a spiral channel to rapidly dry the salt-containing water sprayed into the drying device, and discharging the obtained solid salt;
step five, removing dust, wherein the flue gas output from the drying device in the step four enters a bag-type dust remover and a washing tower for dust removal and acid removal;
and step six, ultralow emission, namely removing fine particles and water vapor from the flue gas output in the step five through wet static electricity, and finally discharging the flue gas to the atmosphere through a chimney after reaching the standard.
Further, the salt-containing water in the fourth step comes from a spray washing tower and salt-containing water for production and processing.
Further, the salt-containing water in the fourth step is sprayed through a high-speed rotating spray head.
Furthermore, a bag-type dust remover and a spray washing tower are adopted for dust removal in the dust removal process in the fifth step.
Further, the temperature in the incinerator is 800-850 ℃, and the temperature in the secondary combustion chamber is 1100-1150 ℃.
Compared with the prior art, the invention has the beneficial effects that:
the invention uses the medium-temperature flue gas generated in the combustion process as a heating source in the drying device, greatly saves the energy consumption in the drying treatment process, realizes the utilization of waste heat, and simultaneously carries out drying treatment on the salt-containing water generated in the tail end washing and production processes of the incineration system, thereby avoiding secondary pollution.
Drawings
FIG. 1 is a schematic process flow diagram of the present invention;
FIG. 2 is a schematic view of the layout of the apparatus used in the embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present embodiment discloses a collaborative incineration method for drying salt-containing water, which implements drying incineration of salt-containing water by the following steps:
firstly, after the waste is sent into the incinerator for primary combustion, the flue gas enters the secondary combustion chamber for secondary combustion, and the high-temperature flue gas coming out of the secondary combustion chamber enters the waste heat recovery device for waste heat recovery, so that the waste heat recovery device is feasible and can recover the waste heat through the heat energy exchange device. Or a channel for recovering the flue gas can be adopted for directly recovering and leading the flue gas to the drying section.
The temperature of the flue gas after waste heat recovery is 500-550 ℃, then the flue gas enters a drying device, the temperature of the flue gas is reduced to 200 ℃ within 1 second, and meanwhile, saline water can come from a spray washing tower and in the production process and is used as a cooling medium of the drying device and sprayed into the drying device through a high-speed rotating spray head. The temperature of the high-temperature flue gas recovered at the front end is between 500 ℃ and 550 ℃, the high-temperature flue gas can enter the drying device through the spiral channel to rapidly dry the salt-containing water, and the dried solid salt is discharged from the bottom of the drying device.
The flue gas coming out of the drying device is dried and absorbed by the drying device to escape or resynthesize a small amount of dioxin, then enters the bag-type dust remover to remove dust, enters the 2-stage washing tower through the induced draft fan to be washed, deacidified and dedusted, then is subjected to wet static to remove fine particles, and finally is discharged to the atmosphere after reaching the standard through the chimney.
The temperature in the incinerator is 800-850 ℃, and the temperature in the secondary combustion chamber is 1100-1150 ℃.
Preferably, the used devices can be uniformly arranged to form a complete and independent treatment workshop, so that the waste is treated, and the treatment efficiency is improved. It is feasible that the equipment used in this embodiment may be arranged as in the arrangement of fig. 2, which is suitable for a waste incinerator for treating solid, liquid and gas. The specific equipment operation process is as follows:
after the waste is primarily combusted by an incinerator 1, the flue gas enters a secondary combustion chamber 2 for secondary combustion, the high-temperature flue gas from the secondary combustion chamber enters a waste heat recovery device 3 for waste heat recovery, the temperature of the flue gas after waste heat recovery is 500-, And (3) removing dust, removing fine particles through wet static electricity 12, and finally discharging the flue gas which reaches the standard through a chimney 13 into the atmosphere.
The invention uses the high-temperature flue gas generated in the combustion process as the heating source in the drying device, greatly saves the energy consumption in the drying treatment process, realizes the utilization of waste heat, utilizes the saline water generated in the washing and production processes to carry out the quenching treatment on the flue gas, and changes the saline water into solid salt to be discharged, realizes the full utilization of the heat source in the whole waste treatment process, and avoids secondary pollution.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (5)
1. A collaborative incineration method for drying salt-containing water is characterized in that the collaborative incineration of the salt-containing water is realized through the following steps:
firstly, burning, namely inputting wastes into a burning furnace for primary burning;
secondly, secondary combustion, namely inputting the flue gas after the primary combustion into a secondary combustion furnace for secondary combustion;
step three, waste heat recovery, namely, carrying out waste heat recovery on the high-temperature flue gas generated in the secondary combustion process by using a waste heat recovery device;
step four, drying, namely introducing the medium-temperature flue gas output in the step three into a drying device through a spiral channel, rapidly drying the brine sprayed into the drying device, and discharging the obtained solid salt;
step five, removing dust, wherein the flue gas output from the drying device in the step four enters a bag-type dust remover and a washing tower for dust removal and acid removal;
and step six, ultralow emission, namely removing fine particles and water vapor from the flue gas output in the step five through wet static electricity, and finally discharging the flue gas to the atmosphere through a chimney after reaching the standard.
2. The collaborative incineration method for drying salt-containing water according to claim 1, wherein the salt-containing water in the fourth step is from an incineration process back end spray washing tower and salt-containing water produced in a production process.
3. The collaborative incineration method for drying salt-containing water according to claim 1, wherein the salt-containing water in the fourth step is sprayed into the drying device through a high-speed rotating spray head.
4. The collaborative incineration method for drying salt-containing water according to claim 1, characterized in that a bag-type dust remover and a spray washing tower are adopted for dust removal in the dust removal process in the fifth step.
5. The collaborative incineration method for drying salt-containing water according to claim 1, characterized in that the temperature in the incinerator is 800-850 ℃, and the temperature in the secondary combustion chamber is 1100-1150 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111309179.5A CN114110622A (en) | 2021-11-06 | 2021-11-06 | Collaborative incineration method for drying salt-containing water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111309179.5A CN114110622A (en) | 2021-11-06 | 2021-11-06 | Collaborative incineration method for drying salt-containing water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114110622A true CN114110622A (en) | 2022-03-01 |
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|---|---|---|---|
| CN202111309179.5A Pending CN114110622A (en) | 2021-11-06 | 2021-11-06 | Collaborative incineration method for drying salt-containing water |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422703A (en) * | 2016-10-26 | 2017-02-22 | 浙江环兴机械有限公司 | Cooperative processing system for hazardous wastes and high-concentration salty waste water and method thereof |
| WO2018091365A1 (en) * | 2016-11-18 | 2018-05-24 | General Electric Technology Gmbh | Apparatus and method for reducing acid gas emissions with zero liquid discharge of waste water |
| CN110964574A (en) * | 2019-11-25 | 2020-04-07 | 广东中元海能新能源技术有限公司 | Organic hazardous waste disposal system and treatment method thereof |
| CN210772220U (en) * | 2019-08-07 | 2020-06-16 | 江苏瑞鼎环境工程有限公司 | Contain salt waste water high temperature melting and burn burning furnace |
| CN112128769A (en) * | 2020-09-03 | 2020-12-25 | 鲁西化工集团股份有限公司煤化工一分公司 | Hazardous waste treatment system and process |
-
2021
- 2021-11-06 CN CN202111309179.5A patent/CN114110622A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106422703A (en) * | 2016-10-26 | 2017-02-22 | 浙江环兴机械有限公司 | Cooperative processing system for hazardous wastes and high-concentration salty waste water and method thereof |
| WO2018091365A1 (en) * | 2016-11-18 | 2018-05-24 | General Electric Technology Gmbh | Apparatus and method for reducing acid gas emissions with zero liquid discharge of waste water |
| CN210772220U (en) * | 2019-08-07 | 2020-06-16 | 江苏瑞鼎环境工程有限公司 | Contain salt waste water high temperature melting and burn burning furnace |
| CN110964574A (en) * | 2019-11-25 | 2020-04-07 | 广东中元海能新能源技术有限公司 | Organic hazardous waste disposal system and treatment method thereof |
| CN112128769A (en) * | 2020-09-03 | 2020-12-25 | 鲁西化工集团股份有限公司煤化工一分公司 | Hazardous waste treatment system and process |
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Application publication date: 20220301 |