CN106745082A - A kind of utilization coal combustion exhaust prepares the device of anhydrous sodium sulfate - Google Patents
A kind of utilization coal combustion exhaust prepares the device of anhydrous sodium sulfate Download PDFInfo
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- CN106745082A CN106745082A CN201510814312.0A CN201510814312A CN106745082A CN 106745082 A CN106745082 A CN 106745082A CN 201510814312 A CN201510814312 A CN 201510814312A CN 106745082 A CN106745082 A CN 106745082A
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Abstract
The invention discloses the device that a kind of utilization coal combustion exhaust prepares anhydrous sodium sulfate, including deduster, reaction tank, purifying pond and evaporation separate out pond, the deduster entrance connects exhaust inlet pipe, the deduster blast pipe is passed through the reaction tank bottom, the reaction tank top is connected with NaOH pond, bottom is provided with discharging tube, the discharging tube connects the purifying pond, and purifying pond top is connected with sulfuric acid pond, and the purifying pond top is connected with carbon dioxide storage device, bottom is provided with delivery pipe, and the delivery pipe connection evaporation separates out pond.Simple structure of the present invention, method is easy, can not only effectively utilize coal combustion exhaust, atmosphere pollution is reduced, while high-purity sulphuric acid sodium can be prepared.
Description
Technical field
The present invention relates to anhydrous sodium sulfate production field, the device that a kind of utilization coal combustion exhaust prepares anhydrous sodium sulfate is particularly related to.
Background technology
Sodium sulphate is monoclinic system, and crystal short cylinder, aggregate is in compact massive or cot shape etc., and water white transparency is soluble in water sometimes with pale yellow or green.White, odorless, the crystallization for having bitter taste or powder, there is hygroscopicity.Profile is colourless, transparent, big crystallization or graininess little crystallization.Easy moisture absorption turns into aqueous sulfuric acid sodium in air.It is transformed into the crystallization of six squares at 241 DEG C.The thin anhydride of high-purity, particle is referred to as glauber salt.It is highly soluble in water.There is cool feeling.Taste is refrigerant and with salty.Easy aquation, is transformed into powdered hydrous sodium sulphate and is covered in surface in humid air.Thenardite is originated in the salt lake of sulfur acid sodium bittern, with the symbiosis such as saltcake, glauberite, epsomite, astrakanite, gypsum, dAnsite, halite, natron；Also can be formed by saltcake dehydration；There is a small amount of output around volcanic fumarole.
Contain substantial amounts of sulfur dioxide in coal combustion exhaust, sulfur dioxide is one of Air Pollutants of face of mankind nowadays, its presence all causes a certain degree of harm to aspects such as natural ecological environment, human health, industrial and agricultural production, building and materials, and more than the 10 times major break downs relevant with sulfur dioxide pollution once occurred in modern age human history.Traditional NaOH absorption process is that the sulfur dioxide that sodium hydroxide solution is directly added into absorption tower absorption waste gas is generated into metabisulfite solution, absorbing liquid is taken out from absorption tower by being concentrated by evaporation, crystallize out sodium sulfite, crystal solution makes crystallization be separated with mother liquor by filtering, mother liquor Returning evaporimeter evaporative crystallization again.Traditional NaOH absorption process long flow path, investment is big, and production process need to consume steam, and sodium sulphate production cost is high.
The content of the invention
The invention aims to solve the problems, such as to be previously mentioned in above-mentioned background technology, there is provided a kind of utilization coal combustion exhaust prepares the device of anhydrous sodium sulfate.
1st, to achieve these goals, technical scheme is as follows：
A kind of utilization coal combustion exhaust prepares the device of anhydrous sodium sulfate, including deduster, reaction tank, purifying pond and evaporation separate out pond, the deduster entrance connects exhaust inlet pipe, the deduster blast pipe is passed through the reaction tank bottom, the reaction tank top is connected with NaOH pond, bottom is provided with discharging tube, the discharging tube connects the purifying pond, and purifying pond top is connected with sulfuric acid pond, and the purifying pond top is connected with carbon dioxide storage device, bottom is provided with delivery pipe, and the delivery pipe connection evaporation separates out pond.
Preferably, the deduster is in horizontal cylinder, and polylith dedusting plate is provided with the deduster, and the deduster bottom is provided with dust arrester.
Preferably, the dedusting plate is to be obliquely installed, and the dedusting plate upper end is near the deduster entrance, and lower end is provided with ventilation dedusting aperture near the blast pipe on the dedusting plate.
Preferably, ph value detectors are provided with the reaction tank.
Preferably, it is provided between the NaOH pond and the reaction tank in the first connecting tube, and first connecting tube and is provided with the first valve.
Preferably, it is provided between the sulfuric acid pond and the reaction tank in the second connecting tube, and second connecting tube and is provided with the second valve.
Preferably, the reaction tank top is provided with exhaust outlet.
Preferably, it is provided with draining valve on the discharging tube.
Preferably, vent valves are provided with the delivery pipe.
Preferably, the evaporation separates out pond and is arranged with heater.
Utilization coal combustion exhaust of the invention prepares the device of anhydrous sodium sulfate, including deduster, reaction tank, purifying pond and evaporation separate out pond, deduster entrance connects exhaust inlet pipe, deduster blast pipe is passed through reaction tank bottom, reaction tank top is connected with NaOH pond, bottom is provided with discharging tube, discharging tube connection purifying pond, purifying pond top is connected with sulfuric acid pond, purifying pond top is connected with carbon dioxide storage device, bottom is provided with delivery pipe, delivery pipe connection evaporation separates out pond, simple structure of the present invention, method is easy, coal combustion exhaust can not only effectively be utilized, reduce atmosphere pollution, high-purity sulphuric acid sodium can be prepared simultaneously.
Brief description of the drawings
Technical scheme in order to illustrate more clearly the embodiments of the present invention, the accompanying drawing to be used needed for being described to embodiment below is briefly described, apparently, drawings in the following description are only some embodiments of the present invention, for those of ordinary skill in the art, without having to pay creative labor, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation in the present embodiment.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made belongs to the scope of protection of the invention.
Specific embodiment：
A kind of utilization coal combustion exhaust with reference to shown in Fig. 1 prepares the device of anhydrous sodium sulfate, including deduster 1, reaction tank 2, purifying pond 3 and evaporation separate out pond 4, the entrance of deduster 1 connects exhaust inlet pipe, the blast pipe 5 of deduster 1 is passed through the bottom of reaction tank 2, the top of reaction tank 2 is connected with NaOH pond 6, bottom is provided with discharging tube 7, sodium hydroxide solution of the NaOH pond 6 built with saturation, the connection purifying of discharging tube 7 pond 3, the purifying top of pond 3 is connected with sulfuric acid pond 8, sulfuric acid pond 8 is built with high-concentration sulfuric acid, the top of purifying pond 3 is connected with carbon dioxide storage device 9, bottom is provided with delivery pipe 10, the connection evaporation of delivery pipe 10 separates out pond 4.
In the present embodiment, deduster 1 is in be provided with polylith dedusting plate 11 in horizontal cylinder, deduster 1, and the bottom of deduster 1 is provided with dust arrester 12.
In embodiment, dedusting plate 11 is to be obliquely installed, and the upper end of dedusting plate 11 is near the entrance of deduster 1, and lower end is provided with ventilation dedusting aperture near blast pipe 5 on dedusting plate 11.
In embodiment, ph values detector 13 is provided with reaction tank 2, as body enters, ph values can decline in reaction tank, when dropping to 9 ~ 9.5, opens discharging tube 7.
In embodiment, it is provided between NaOH pond 6 and reaction tank 2 and the first valve 15 is provided with first connecting tube 14, and the first connecting tube 14.
In embodiment, it is provided between sulfuric acid pond 8 and reaction tank 2 and the second valve 17 is provided with second connecting tube 16, and the second connecting tube 16.
In embodiment, the top of reaction tank 2 is provided with exhaust outlet 18.
Draining valve 19 is provided with embodiment, on discharging tube.
Vent valves 20 are provided with embodiment, on delivery pipe.
In embodiment, evaporation separates out pond and is arranged with heater 21.
The present embodiment is in use, dust in the first-selected waste gas of being gone out in deduster 1 of coal combustion exhaust, then pass in reaction tank 2, sodium hydroxide solution in reaction tank 2 absorbs carbon dioxide and sulfur dioxide gas in waste gas, production sodium sulfite and sodium carbonate, sodium sulfite is oxidized to sodium sulphate in the presence of oxygen, mixed solution is drained into purifying pond 3 again, sulfuric acid is added in purifying pond 3, sulfuric acid and sodium carbonate react, it is sodium sulphate to purify, and metabisulfite solution then is entered into evaporation precipitation during evaporation separates out pond 4 is dehydrated into anhydrous sodium sulfate.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, all any modification, equivalents made within the scope of the present invention etc. should be included within the scope of the present invention.
Claims (10)
1. a kind of utilization coal combustion exhaust prepares the device of anhydrous sodium sulfate, it is characterized in that, including deduster, reaction tank, purifying pond and evaporation separate out pond, the deduster entrance connects exhaust inlet pipe, the deduster blast pipe is passed through the reaction tank bottom, the reaction tank top is connected with NaOH pond, bottom is provided with discharging tube, the discharging tube connects the purifying pond, purifying pond top is connected with sulfuric acid pond, the purifying pond top is connected with carbon dioxide storage device, bottom is provided with delivery pipe, the delivery pipe connection evaporation separates out pond.
2. a kind of utilization coal combustion exhaust according to claim 1 prepares the device of anhydrous sodium sulfate, it is characterised in that the deduster is in horizontal cylinder, and polylith dedusting plate is provided with the deduster, and the deduster bottom is provided with dust arrester.
3. a kind of utilization coal combustion exhaust according to claim 2 prepares the device of anhydrous sodium sulfate, characterized in that, the dedusting plate is to be obliquely installed, and the dedusting plate upper end is near the deduster entrance, lower end is provided with ventilation dedusting aperture near the blast pipe on the dedusting plate.
4. a kind of utilization coal combustion exhaust according to claim 1 prepares the device of anhydrous sodium sulfate, it is characterised in that ph value detectors are provided with the reaction tank.
5. a kind of utilization coal combustion exhaust according to claim 1 prepares the device of anhydrous sodium sulfate, it is characterised in that is provided between the NaOH pond and the reaction tank in the first connecting tube, and first connecting tube and is provided with the first valve.
6. a kind of utilization coal combustion exhaust according to claim 1 prepares the device of anhydrous sodium sulfate, it is characterised in that is provided between the sulfuric acid pond and the reaction tank in the second connecting tube, and second connecting tube and is provided with the second valve.
7. a kind of utilization coal combustion exhaust according to claim 1 prepares the device of anhydrous sodium sulfate, it is characterised in that the reaction tank top is provided with exhaust outlet.
8. a kind of utilization coal combustion exhaust according to claim 1 prepares the device of anhydrous sodium sulfate, it is characterised in that be provided with draining valve on the discharging tube.
9. a kind of utilization coal combustion exhaust according to claim 1 prepares the device of anhydrous sodium sulfate, it is characterised in that be provided with vent valves on the delivery pipe.
10. a kind of utilization coal combustion exhaust according to claim 1 prepares the device of anhydrous sodium sulfate, it is characterised in that the evaporation separates out pond and is arranged with heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510814312.0A CN106745082A (en) | 2015-11-23 | 2015-11-23 | A kind of utilization coal combustion exhaust prepares the device of anhydrous sodium sulfate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510814312.0A CN106745082A (en) | 2015-11-23 | 2015-11-23 | A kind of utilization coal combustion exhaust prepares the device of anhydrous sodium sulfate |
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| CN106745082A true CN106745082A (en) | 2017-05-31 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4588567A (en) * | 1985-01-28 | 1986-05-13 | Ralph Miller | Recovery of concentrated H2 S from SO2 contained in flue gas |
| CN1077657A (en) * | 1992-04-17 | 1993-10-27 | 廖树汉 | Reclaim the method for comprehensive utilization and the device of waste gas |
| CN102423615A (en) * | 2011-08-29 | 2012-04-25 | 秦皇岛双轮环保科技有限公司 | Desulfurization system and method for processing flue gas of glass melting furnace |
| CN102489132A (en) * | 2011-11-23 | 2012-06-13 | 武汉兴能环保技术有限公司 | Novel dual-alkali desulfurization method for removal of sulfur dioxide from flue gas and generation of elemental sulfur as byproduct |
| CN205367752U (en) * | 2015-11-23 | 2016-07-06 | 湖南衡阳新澧化工有限公司 | Utilize coal -fired waste gas preparation anhydrous sodium sulphate's device |
-
2015
- 2015-11-23 CN CN201510814312.0A patent/CN106745082A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4588567A (en) * | 1985-01-28 | 1986-05-13 | Ralph Miller | Recovery of concentrated H2 S from SO2 contained in flue gas |
| CN1077657A (en) * | 1992-04-17 | 1993-10-27 | 廖树汉 | Reclaim the method for comprehensive utilization and the device of waste gas |
| CN102423615A (en) * | 2011-08-29 | 2012-04-25 | 秦皇岛双轮环保科技有限公司 | Desulfurization system and method for processing flue gas of glass melting furnace |
| CN102489132A (en) * | 2011-11-23 | 2012-06-13 | 武汉兴能环保技术有限公司 | Novel dual-alkali desulfurization method for removal of sulfur dioxide from flue gas and generation of elemental sulfur as byproduct |
| CN205367752U (en) * | 2015-11-23 | 2016-07-06 | 湖南衡阳新澧化工有限公司 | Utilize coal -fired waste gas preparation anhydrous sodium sulphate's device |
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Application publication date: 20170531 |