CN100404955C - Method and apparatus for treating contaminated salt - Google Patents
Method and apparatus for treating contaminated salt Download PDFInfo
- Publication number
- CN100404955C CN100404955C CNB2004100989212A CN200410098921A CN100404955C CN 100404955 C CN100404955 C CN 100404955C CN B2004100989212 A CNB2004100989212 A CN B2004100989212A CN 200410098921 A CN200410098921 A CN 200410098921A CN 100404955 C CN100404955 C CN 100404955C
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- Prior art keywords
- salt
- dirty
- dirty salt
- burner
- burner hearth
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- Incineration Of Waste (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The present invention relates to a harmless treatment method for dirty salt in industrial wastewater, and a device thereof. A furnace chamber of a combustion furnace is heated to 850 to 900 DEG C; dirty salt is added in the furnace chamber from the upper part of the rear part of the furnace chamber; the dirty salt is melted and slips down, and the organic substances among the dirty salt are resolved through oxidation; the tail gas which is treated by heat recovering and purification is discharged; the rest part of the melting dirty salt slips to the bottom of the combustion furnace, and pure industrial salt is obtained. The dirty salt treating device comprises a combustion furnace, a burner, a tail flue and a smoke gas washing purification tower. The furnace chamber of the combustion furnace is in an arch shape, of which the upper part is circular and the lower part is quadrate. The back wall of the combustion furnace is in a step shape, and is retractile to the furnace bottom. The burner is installed on the front wall of the combustion furnace. A dirty salt adding opening is arranged in the position of the top of the furnace chamber of the combustion furnace adjacent to the back wall. A collecting pit for melting salt is arranged at the bottom of the furnace chamber. The dirty salt treating method provided by the present invention has simple procedure, easy operation and simple device, can realize the harmless treatment for dirty salt, can not cause environment pollution or resource waste, and has application values.
Description
Technical field
The invention belongs to the processing of waste water, specifically relate to the method for innocent treatment and the device thereof of the dirty salt in a kind of industrial wastewater.
Technical background
In the production process of agricultural chemicals, can discharge the waste water of a large amount of saliferous, behind distillation recovery moisture wherein, the brown yellow granule shape solid residue that obtains is dirty salt, and its main component is NaCl, contain have an appointment 5% harmful organic substance and small amount of moisture in addition, the about 650kJ/kg of calorific value.The characteristic of the dirty salt of research in Muffle furnace finds that dirty salt at 550 ℃ little bonding takes place, and bonding melting phenomenon occurs because of impurity in the time of 700 ℃ in the time of 600 ℃.The method and apparatus that does not also have at present mature and feasible for the processing of this dirty salt, usually that it is directly discarded or be disposed to the sea, cause the environmental pollution and the wasting of resources.
Summary of the invention
The objective of the invention is to overcome when prior art is handled dirty salt and easily cause the defective of the environmental pollution and the wasting of resources, thereby a kind of processing method of innoxious dirty salt is provided.
Another object of the present invention is to provide a kind of dirty salt treating apparatus of implementing said method.
The objective of the invention is to realize by the following technical solutions:
The processing method of dirty salt provided by the invention, it is for being heated to 850～900 ℃ with auxiliary fuel with the burner hearth of incinerator, and the dirty salt that desire is handled adds burner hearth from top, burner hearth rear portion; Dirty salt fusion is glided, and the organic matter in the dirty salt burns under this hot conditions, oxidation Decomposition, and the tail gas of emitting discharges through heat recovery with after purifying; The remainder of the dirty salt of fusion is slipped to the incinerator bottom, separates, and collects, and obtains commercially pure salt.
Described auxiliary fuel is gas or liquid fuel.
Excess air factor in the described incinerator is 1～1.5.
The invention provides a kind of dirty salt treating apparatus of implementing said method, comprise an incinerator, burner, back-end ductwork and flue gas washing purifying column, the burner hearth of described incinerator is the arch of circular upper part and square lower part, and wall is the stairstepping that shrinks to furnace bottom thereafter; Described burner is installed on the front wall of incinerator; The top of incinerator burner hearth is provided with dirty salt near wall place, back and adds inlet, and the bottom of burner hearth is provided with the fuse salt collecting pit; The exhanst gas outlet at the top of burner hearth links to each other with the flue gas washing purifying column with back-end ductwork successively.
Described burner is gaseous fuel or liquid-fuel burner.
Arrange heating surface in the described back-end ductwork, cooled flue gas also reclaims heat.
Principle of the present invention is by auxiliary fuel burner hearth to be heated to 850～900 ℃, dirty salt adds behind the burner hearth behind the stairstepping wall downslide of rolling from top, burner hearth rear portion, by smoke pre-heating, the flame of front wall firing device ejection directly heats the dirty salt that slides into wall middle part, back down, make dirty salt fusion, harmful organic substance is separated from the salt crystalline substance and oxidation Decomposition, can collect the commercially pure salt of fusion at burner hearth bottom; Tail gas is discharged burner hearth from the exhanst gas outlet of roof of the furnace, enters the flue gas washing purifying column, removes SO
2And HCl, flue gas after being purified can reach atmosphere pollutants emission standards; Wall can make dirty salt along its downslide of rolling behind the stairstepping, prolongs the time of staying of dirty salt in stove, and dirty salt is fully contacted with hot flue gas in the process of rolling, and helps the harmful organic substance oxidation Decomposition; Dirty salt adds from top, burner hearth rear, can make the flue gas cooling simultaneously by smoke pre-heating in the downslide process; Gas or liquid auxiliary fuel burned flame directly heat dirty salt, but energy efficient, and do not bring new impurity into.
The process method step of dirty salt provided by the invention is simple, easy and simple to handle, device is not loaded down with trivial details, can realize the harmless treatment of dirty salt.The salt of the technical purity of both can having purified from dirty salt reclaims use, organic impurities is therebetween separated from dirty salt, and oxidation Decomposition, the afterbody purifier entered with flue gas, remove pernicious gas by general tail gas clean-up technology, reach discharge standard.Method of the present invention can not cause the environmental pollution and the wasting of resources, has using value.
Description of drawings
Fig. 1 is the schematic diagram of dirty salt harmless treatment device.
Wherein:
Burner hearth 1 dirty salt adds inlet 11 back wall 12 fuse salt collecting pits 13
Burner 2 back-end ductworks 3 flue gas washing purifying columns 4
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples:
Embodiment 1,
One dirty salt harmless treatment device, comprise burner hearth 1, burner 2, back-end ductwork 3 and flue gas washing purifying column 4, burner hearth 1 is the arch of circular upper part and square lower part, front wall is aimed at back wall center oil burner 2 is installed, back wall 12 is the stairstepping that shrinks to furnace bottom, burner hearth 1 top is provided with dirty salt near wall place, back and adds inlet 11, and burner hearth 1 bottom is provided with fuse salt collecting pit 13, and burner hearth 1 top links to each other with back-end ductwork 3; Excess air factor is 1.5 in the burner hearth 1, fire box temperature is 850 ℃, the flame of oil firing flings back wall 12, make the dirty salt fusion of gliding along back wall 12, flow into fuse salt collecting pit 13, harmful organic substance oxidation Decomposition in the dirty salt, flue gas enters flue gas washing purifying column 4 through back-end ductwork 3, reaches discharge standard and enter atmosphere behind washing, purifying; Arrange heating surface in the back-end ductwork 3, cooled flue gas also reclaims heat.
Embodiment 2,
One dirty salt harmless treatment device, comprise burner hearth 1, burner 2, back-end ductwork 3 and flue gas washing purifying column 4, burner hearth 1 is the arch of circular upper part and square lower part, front wall is installed neat gas burner 2, back wall 12 is the stairstepping that shrinks to furnace bottom, burner hearth 1 top is provided with dirty salt near wall 12 places, back and adds inlet 11, and burner hearth 1 bottom is provided with fuse salt collecting pit 13, and burner hearth 1 top links to each other with back-end ductwork 3; Excess air factor is 1 in the burner hearth 1, fire box temperature is 900 ℃, the flame of combustion of natural gas flings back wall 12, make the dirty salt fusion of gliding along back wall 12, flow into fuse salt collecting pit 13, harmful organic substance oxidation Decomposition in the dirty salt, flue gas enters flue gas washing purifying column 4 through back-end ductwork 3, reaches discharge standard and enter atmosphere behind washing, purifying; Arrange heating surface in the back-end ductwork 3, cooled flue gas also reclaims heat.
Claims (5)
1. the processing method of a dirty salt is characterized in that, with auxiliary fuel the burner hearth of incinerator is heated to 850～900 ℃, and the dirty salt that desire is handled adds burner hearth from top, burner hearth rear portion; Dirty salt fusion is glided, and the organic matter in the dirty salt burns under this hot conditions, oxidation Decomposition, and the tail gas of emitting discharges through heat recovery with after purifying; The remainder of the dirty salt of fusion is slipped to the incinerator bottom, separates, and collects, and obtains commercially pure salt.
2. the processing method of dirty salt as claimed in claim 1, it is characterized in that: described auxiliary fuel is gas or liquid fuel.
3. the processing method of dirty salt as claimed in claim 1 is characterized in that: the excess air factor in the described incinerator is 1～1.5.
4. the device that dirty salt is handled comprises an incinerator, burner, back-end ductwork and flue gas washing purifying column, and it is characterized in that: the burner hearth of described incinerator is the arch of circular upper part and square lower part, and wall is the stairstepping that shrinks to furnace bottom thereafter; Described burner is installed on the front wall of incinerator; The top of incinerator burner hearth is provided with dirty salt near wall place, back and adds inlet, and the bottom of burner hearth is provided with the fuse salt collecting pit; The exhanst gas outlet at the top of burner hearth links to each other with the flue gas washing purifying column with back-end ductwork successively.
5. the device that dirty salt as claimed in claim 4 is handled, it is characterized in that: described burner is gaseous fuel or liquid-fuel burner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100989212A CN100404955C (en) | 2004-12-15 | 2004-12-15 | Method and apparatus for treating contaminated salt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100989212A CN100404955C (en) | 2004-12-15 | 2004-12-15 | Method and apparatus for treating contaminated salt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1789813A CN1789813A (en) | 2006-06-21 |
| CN100404955C true CN100404955C (en) | 2008-07-23 |
Family
ID=36787851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100989212A Expired - Fee Related CN100404955C (en) | 2004-12-15 | 2004-12-15 | Method and apparatus for treating contaminated salt |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100404955C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101508448B (en) * | 2009-03-20 | 2010-09-22 | 南京威尔化工有限公司 | Fine purification treatment process for by-product abraum salt of end capping polyether |
| CN103693658B (en) * | 2013-12-26 | 2015-02-04 | 安徽今朝环保科技有限公司 | Comprehensive treatment device for industrial waste salt based on three-section incinerator and use method of device |
| CN106276979A (en) * | 2015-05-12 | 2017-01-04 | 山东潍坊润丰化工股份有限公司 | A kind of melting furnace for by-product Nacl recycling treatment and method |
| CN105060314A (en) * | 2015-07-21 | 2015-11-18 | 山东中天科技工程有限公司 | Waste salt treating technology |
| CN106610220A (en) * | 2015-10-21 | 2017-05-03 | 山东潍坊润丰化工股份有限公司 | High-corrosion-resistance smelting furnace for byproduct industrial salt |
| CN106608728A (en) * | 2015-10-21 | 2017-05-03 | 山东潍坊润丰化工股份有限公司 | By-product industrial salt melting furnace having effect of reducing precipitation of metal ions |
| CN107321755A (en) * | 2017-06-30 | 2017-11-07 | 江苏省环境科学研究院 | A kind of abraum salt process for reclaiming and its special purpose device |
| CN109579025A (en) * | 2018-11-27 | 2019-04-05 | 东北大学 | A kind of industrial waste salt efficient fusion incinerator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07127825A (en) * | 1993-11-04 | 1995-05-16 | Kubota Corp | Melting treatment furnace |
| JP2000088218A (en) * | 1998-09-11 | 2000-03-31 | Nkk Corp | Method and furnace for melting incineration residue containing salts |
| CN1277154A (en) * | 2000-07-28 | 2000-12-20 | 杨宝德 | Treatment of waste water containing nitro phenol |
| CN2568978Y (en) * | 2001-04-29 | 2003-08-27 | 陈启松 | Incineration system for organic waste liquid and waste gas |
-
2004
- 2004-12-15 CN CNB2004100989212A patent/CN100404955C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07127825A (en) * | 1993-11-04 | 1995-05-16 | Kubota Corp | Melting treatment furnace |
| JP2000088218A (en) * | 1998-09-11 | 2000-03-31 | Nkk Corp | Method and furnace for melting incineration residue containing salts |
| CN1277154A (en) * | 2000-07-28 | 2000-12-20 | 杨宝德 | Treatment of waste water containing nitro phenol |
| CN2568978Y (en) * | 2001-04-29 | 2003-08-27 | 陈启松 | Incineration system for organic waste liquid and waste gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1789813A (en) | 2006-06-21 |
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Granted publication date: 20080723 Termination date: 20191215 |