CN203869073U - Device capable of circularly using waste lye for treating rotary kiln smoke - Google Patents
Device capable of circularly using waste lye for treating rotary kiln smoke Download PDFInfo
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- CN203869073U CN203869073U CN201420266902.5U CN201420266902U CN203869073U CN 203869073 U CN203869073 U CN 203869073U CN 201420266902 U CN201420266902 U CN 201420266902U CN 203869073 U CN203869073 U CN 203869073U
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- rotary kiln
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- flue gas
- caustic wash
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Abstract
A device capable of circularly using waste lye for treating rotary kiln smoke comprises a smoke treating system and a circular treating system. The smoke treating system comprises a rotary kiln, a secondary combustion chamber, a heat exchanger, a quenching chamber, an alkaline tower, a drying adsorbing tower, an activated carbon adsorbing tower and a dust remover which are connected in sequence, wherein the quenching chamber is connected with an outlet of the heat exchanger. The circular treating system comprises a lye collecting pool, a filter press connected with an outlet of the lye collecting pool, a cooling water tower connected with an outlet of the filter press and an adding and reducing adjusting pool connected with an outlet of the cooling water tower, an outlet of the adding and reducing adjusting pool is connected with the quenching chamber and the alkaline tower through spray guns, a liquid outlet of the quenching chamber and a liquid outlet of the alkaline tower are connected with an inlet of the lye collecting pool, and lye can be circularly added in the smoke treating system. The circular treating system of the device is adopted for treating waste lye, the using amount of alkali for production is saved, and harmless treatment is conducted on the waste lye. About 50 percent of the alkali usage amount can be saved by using the device, and production cost of an enterprise is saved.
Description
Technical field
The utility model relates to a kind of device of reusable edible spent lye smoke treatment.
Background technology
In chemical industry production process, produce a large amount of spent lyes, spent lye belongs to hazardous waste, be disposed by the enviromental protection enterprise that has qualification of specialty, with protection of the environment." the acid-base neutralization method " generally adopting at present disposed, and generally with sulfuric acid, hydrochloric acid, alkali lye neutralized, and reaches after neutrality, carries out Separation of Solid and Liquid, processes respectively solid waste and waste liquid." acid-base neutralization method " mode of employing is processed salkali waste, not only will cost fund purchase sulfuric acid, hydrochloric acid, and the general direct discharge of the waste gas producing in N-process, or has simple gas absorbing device, and environment is had to certain pollution.
Summary of the invention
Goal of the invention of the present utility model be to overcome prior art above shortcomings and provide a kind of with dirty pollution treatment, the treatment of wastes with processes of wastes against one another, cost is low, treatment effect good, the device of the reusable edible spent lye smoke treatment of environmental protection.
The technical solution of the utility model is: comprising: smoke processing system, for add the circulating treating system of spent lye to smoke processing system; Described smoke processing system comprises: for burning the rotary kiln of treated waste, the dual firing chamber being connected with the outlet of rotary kiln, the heat exchanger being connected with the outlet of dual firing chamber, the quench chamber being connected with the outlet of heat exchanger, the caustic wash tower being connected with the outlet of quench chamber, the dry absorption tower being connected with the outlet of caustic wash tower, the activated carbon adsorber being connected with the outlet of dry absorption tower, exports with activated carbon adsorber the deduster being connected; Described circulating treating system comprises: alkali lye collecting pit, export the filter press that is connected, export the cooling tower being connected, the plus-minus regulating reservoir being connected with the outlet of cooling tower with filter press with alkali lye collecting pit, the outlet of plus-minus regulating reservoir is connected with caustic wash tower with quench chamber respectively through spray gun, the liquid outlet of quench chamber and caustic wash tower is connected with the import of alkali lye collecting pit, capable of circulationly adds alkali lye to smoke processing system.
Described filter press is plate and frame filter press.
On described caustic wash tower, be evenly placed with the above spray gun of one deck, every layer comprises more than one spray gun, and every layer of spray gun is evenly arranged in caustic wash tower surrounding.
On described caustic wash tower, be evenly placed with three layers of spray gun, lay respectively at top, middle part, the bottom of caustic wash tower.
On described caustic wash tower, every layer comprises six spray guns.
In described quench chamber, be evenly placed with four spray guns.
Described dry absorption tower is the dry absorption tower of quick lime.
Described activated carbon adsorption tower is that two-stage series connection is arranged.
Described deduster is sack cleaner.
The principle of disposing a kind of new disposal system of spent lye is: in rotary kiln, in incineration disposal hazardous waste process, produces a large amount of sour gas, if sour gas is discharged in atmosphere, pollutes the environment, form " acid rain ", and very large to environmental hazard.Therefore need gas to neutralize, purify, enviromental protection enterprise generally uses buck (NaOH) to carry out neutralization reaction, and this will consume a large amount of alkali, increase entreprise cost.The principle of new disposal system utilizes salkali waste to the sour gas neutralization in flue gas, has both made incineration flue gas neutralization, has purified rear emission compliance, again salkali waste has been disposed.Concrete steps: spent lye is sprayed onto in flue gas quench chamber, caustic wash tower with spray gun, the sour gas generation acid-base neutralization producing with burning reacts, reduce the acidity in flue gas, the salkali waste not reacted flows in buck circulatory pool, after filtering, lowering the temperature, reenter flue gas quench chamber and react, it is a process for continuous circulation that buck absorbs.If buck concentration declines, need the supplementary new alkali that adds.
Adopt circulating treating system of the present utility model to carry out salkali waste disposal, not only saved production alkali charge, and salkali waste has been carried out to harmless treatment.Can save 50% alkali charge by this technique, for enterprise saves production cost.Per diem process 20 tons of dangerous waste incinerators and calculate, within 1 year, can save 200 tons of liquid caustic soda, enterprise can increase by 200,000 yuan of profits.Adopt new disposal system also to bring huge social benefit, because the flue gas of new disposal system in the system of sealing, negative pressure after multiple working procedure purified treatment, after reaching discharging standards, just discharge, avoid adopting traditional " acid-base neutralization method " mode to process salkali waste, originally not only to cost fund purchase sulfuric acid, hydrochloric acid, waste resource, and the general direct discharge of the waste gas producing in N-process, or there is simple gas absorbing device, environment is had to certain pollution.In a word, adopt new disposal system not only to have huge economic benefit, also have very large social benefit.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Detailed description of the invention
In Fig. 1, the utility model comprises: wet flue gas treatment system, for add the spent lye circulating treating system of alkali lye to smoke processing system.In smoke processing system, the outlet of rotary kiln 1 connects the import of dual firing chamber 2, the outlet of dual firing chamber 2 connects the import of heat exchanger 3, the outlet of heat exchanger 3 connects the import of quench chamber 4, the outlet of quench chamber 4 connects the import of caustic wash tower 5, the outlet of caustic wash tower 5 connects the import of dry absorption tower 6, and what the outlet of dry absorption tower 6 was connected is activated carbon adsorber 7, and what be connected with activated carbon adsorber is deduster 8.In spent lye circulating treating system, spent lye 14 enters salkali waste pond and collects in 9, the outlet of alkali lye collecting pit 9 connects the import of filter press 10, the outlet of filter press 10 connects the import of cooling tower 11, the outlet of cooling tower 11 connects and adds alkali regulating reservoir 12, the outlet that adds alkali regulating reservoir 12 is connected with caustic wash tower 5 with quench chamber 4 respectively through spray gun 13, and the import of alkali lye collecting pit 9 connects the liquid outlet of quench chamber 4 and caustic wash tower 5.
When work, wet flue gas processing:
Rotary kiln 1 takes downflow type to burn mode, and refuse 15 to be burned joins in rotary kiln 1 from kiln hood automatically through feed system, and through approximately 1200 DEG C of high temperature incinerations, pyrolytic gasification, the flue gas that contains pyrolysis combustible gas of generation is sent into dual firing chamber 2.Pyrolysis combustible gas and auxiliary fuel (light diesel) be burning again in dual firing chamber 2, makes flue-gas temperature rise to 1100 DEG C above and stop 2s in dual firing chamber more than, impels dioxin poisonous and harmful substance thoroughly to destroy, fully decompose.Dual firing chamber 2 high-temperature flue gas is out cooled to approximately 500 DEG C through heat exchanger 3, enter the flue gas of atomizing chilling chamber 4, after four spray gun atomizations, forming under the spray effect of vaporific low-temperature alkaline mist, in 1s, temperature is by below approximately 500 DEG C of rapid drawdowns to 200 DEG C, effectively stop the low temperature of bioxin synthetic again, also absorbed simultaneously, neutralized part sour gas in flue gas.Flue gas enters spraying caustic wash tower 5 subsequently.Caustic wash tower 5 is placed with three layers of spray gun, and six spray guns of every layer of even annular spread form adverse current through vaporific high concentration alkali mist and the flue gas of spray gun atomization, thoroughly absorb the sour gas of removing in flue gas.Flue gas, after a large amount of steam in condensation dehydration removal flue gas, enters the dry absorption tower 6 of two-stage quick lime.Abundant dried flue gas, absorbs heavy metal in flue gas and residual Wei Liang dioxin poisonous and harmful substance through activated carbon adsorber 7.Flue gas enters flue gas to 65-80 DEG C subsequently, exceeds 30 DEG C of its dew-point temperatures and enters sack cleaner 8 after above.Sack cleaner 8, by the buffer action of cloth bag, is removed after the remaining flying dust in flue gas, and on-line monitoring instrument carries out Real-Time Monitoring to the flue gas of discharge, through high-altitude chimney 16 qualified discharges.
Spent lye processing: spent lye 14, through alkali lye collecting pit 9, carries out first filtration, after filtering big particle, send filter press 10 to filter.Enter contacting with filter cloth containing body refuse spent lye of filter press 10, utilize the pressure reduction on filter cloth both sides, force most alkali lye in material through filter cloth, the alkali lye of " pure " is from wherein separating, and the circuit of design by filter plate is delivered to cooling tower 11.Body refuse in spent lye is just blocked among filter chamber by filter cloth, and accumulation becomes filter cake, regularly clears up.The alkali lye that 11 coolings are processed through cooling tower is delivered to add in alkali regulating reservoir 12 and is adjusted alkali treatment (as the case may be, determining it is supplement soda ash or be diluted with water), guarantees to reach the pH value of technological requirement, and alkali lye pH value is greater than 11.Deployed alkali lye sprays into quench chamber 4 and caustic wash tower 5 through spray gun 13, on the one hand the acidic materials in flue gas is absorbed, is neutralized, and on the other hand other solid suspension in flue gas is washed, is caught, and reaches purification object.The dust-laden alkali lye that quench chamber 4 and caustic wash tower 5 do not neutralize completely send alkali lye collecting pit 9 to collect through pipeline, after first filtration, send filter press 10 to process, process through cooling tower 11 coolings, add alkali regulating reservoir 12 and adjust alkali treatment, again deliver to spray gun 13, so far reach alkali lye and recycle.
Claims (9)
1. reusable edible spent lye is processed a device for rotary kiln flue gas, it is characterized in that: comprising: smoke processing system, for add the circulating treating system of spent lye to smoke processing system;
Described smoke processing system comprises: for burning the rotary kiln (1) of treated waste, the dual firing chamber (2) being connected with the outlet of rotary kiln (1), the heat exchanger (3) being connected with the outlet of dual firing chamber (2), the quench chamber (4) being connected with the outlet of heat exchanger (3), the caustic wash tower (5) being connected with the outlet of quench chamber (4), the dry absorption tower (6) being connected with the outlet of caustic wash tower (5), the activated carbon adsorber (7) being connected with the outlet of dry absorption tower (6), exports with activated carbon adsorber (7) deduster (8) being connected;
Described circulating treating system comprises: alkali lye collecting pit (9), export the filter press (10) that is connected, export the cooling tower (11) being connected, the plus-minus regulating reservoir (12) being connected with the outlet of cooling tower (11) with filter press (10) with alkali lye collecting pit (9), the outlet of plus-minus regulating reservoir (12) is connected with caustic wash tower (5) with quench chamber (4) respectively through spray gun (13), and the liquid outlet of quench chamber (4) and caustic wash tower (5) is connected with alkali lye collecting pit (9) import.
2. reusable edible spent lye according to claim 1 is processed the device of rotary kiln flue gas, it is characterized in that: described filter press (10) is plate and frame filter press.
3. reusable edible spent lye according to claim 1 is processed the device of rotary kiln flue gas, it is characterized in that: on described caustic wash tower (5), be evenly placed with the above spray gun of one deck, every layer comprises more than one spray gun, and every layer of spray gun is evenly arranged in caustic wash tower surrounding.
4. reusable edible spent lye according to claim 3 is processed the device of rotary kiln flue gas, it is characterized in that: on described caustic wash tower (5), be evenly placed with three layers of spray gun, lay respectively at top, middle part, the bottom of caustic wash tower (5).
5. reusable edible spent lye according to claim 3 is processed the device of rotary kiln flue gas, it is characterized in that: upper every layer of described caustic wash tower (5) comprises six spray guns.
6. reusable edible spent lye according to claim 1 is processed the device of rotary kiln flue gas, it is characterized in that: in described quench chamber (4), be evenly placed with four spray guns.
7. reusable edible spent lye according to claim 1 is processed the device of rotary kiln flue gas, it is characterized in that: described dry absorption tower (6) is the dry absorption tower of quick lime.
8. reusable edible spent lye according to claim 1 is processed the device of rotary kiln flue gas, it is characterized in that: described activated carbon adsorption tower (7) is two-stage series connection arrangement.
9. reusable edible spent lye according to claim 1 is processed the device of rotary kiln flue gas, it is characterized in that: described deduster (8) is sack cleaner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420266902.5U CN203869073U (en) | 2014-05-23 | 2014-05-23 | Device capable of circularly using waste lye for treating rotary kiln smoke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420266902.5U CN203869073U (en) | 2014-05-23 | 2014-05-23 | Device capable of circularly using waste lye for treating rotary kiln smoke |
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| Publication Number | Publication Date |
|---|---|
| CN203869073U true CN203869073U (en) | 2014-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420266902.5U Expired - Fee Related CN203869073U (en) | 2014-05-23 | 2014-05-23 | Device capable of circularly using waste lye for treating rotary kiln smoke |
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| CN (1) | CN203869073U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492203A (en) * | 2014-12-04 | 2015-04-08 | 常州大学 | Gas-liquid-phase medium flue gas dust removal method |
| CN111013341A (en) * | 2019-12-31 | 2020-04-17 | 临澧金华天机械制造有限公司 | Flue gas processing system during welding |
-
2014
- 2014-05-23 CN CN201420266902.5U patent/CN203869073U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104492203A (en) * | 2014-12-04 | 2015-04-08 | 常州大学 | Gas-liquid-phase medium flue gas dust removal method |
| CN111013341A (en) * | 2019-12-31 | 2020-04-17 | 临澧金华天机械制造有限公司 | Flue gas processing system during welding |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20200523 |