CN101549970B - Energy-saving environment protection apparatus for producing chemical gypsum powder by using tail gas - Google Patents
Energy-saving environment protection apparatus for producing chemical gypsum powder by using tail gas Download PDFInfo
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- CN101549970B CN101549970B CN2009101166785A CN200910116678A CN101549970B CN 101549970 B CN101549970 B CN 101549970B CN 2009101166785 A CN2009101166785 A CN 2009101166785A CN 200910116678 A CN200910116678 A CN 200910116678A CN 101549970 B CN101549970 B CN 101549970B
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Abstract
The present invention relates to an energy-saving environment protection apparatus for drying and producing chemical gypsum powder by using tail gas, including a circumversion frying pan (1) and a hearth box (16), wherein the circumversion frying pan is provided with a packing auger feeder (3), characterized in that a tail gas collecting tube (8) is connected with one end of a impulse drying tube(10), the other end of the impulse drying tube (10) is connected with a cyclonic collector (11), a feed end of the cyclonic collector (11) is connected with the packing auger feeder (3), and an exhaust end of the cyclonic collector (11) is connected with a draught fan (14). The beneficial effect of the apparatus is that the gypsum raw material is dried by using the high-temperature tail gas and aqueous vapour generated by the circumversion frying pan. The gas drying contact area is large, and the thermal efficiency is high. The tail gas contains microparticle flue dust which may play a function of the activated carbon to remove yellow, so that the white content of the gypsum powder is improved. The tail gas and the aqueous vapour is purified by a dedusting environment protection apparatus,thus the pollutant will be not discharged outside, and the environment protection effect is good.
Description
Technical field
The present invention relates to a kind of energy-saving environmental protection device of producing terra alba, especially a kind of energy-saving environmental protection device with the tail gas drying and producing chemical gypsum powder.
Background technology
The major ingredient of plaster of Paris is semi-hydrated gypsum (CaSO
41/2H
2O), gypsum raw material can adopt the plaster of paris or chemical gypsum (desulfurated plaster, citric acid gypsum, phosphogypsum), the chemical gypsum free water content is all at 15%-30%, present main method is to adopt revolution frying pan oven dry calcining to make semi-hydrated gypsum, chemical gypsum energy loss-rate plaster of paris energy consumption height in the oven dry calcination process, the mark coal consumption amount of the plaster of paris is 70-80 kilogram/ton, and desulfurated plaster is 110-120 kilogram/ton, and citric acid gypsum is 120-140 kilogram/ton.The exhaust temperature that revolution frying pan burner hearth produces is about 300 ℃, and the steam temperature that produces in the revolution frying pan is about 190 ℃, and tail gas and steam directly discharge, and be not used, and the dust in tail gas and the steam are difficult to handle contaminate environment.
Summary of the invention
Purpose of the present invention is exactly in order to overcome the defective of the higher and dust polluting environment of gypsum oven dry calcinating consumption, and a kind of energy-saving environmental protection device with the tail gas drying and producing chemical gypsum powder is provided.
The technical solution adopted for the present invention to solve the technical problems is:
Energy-saving environmental protection device with the tail gas drying and producing chemical gypsum powder, comprise revolution frying pan and burner hearth, be provided with the auger conveyer in the revolution frying pan, it is characterized in that: the burner hearth afterbody is provided with the exhaust collection pipe, the exhaust collection pipe is connected with impulse drying Guan Yiduan, and this end of impulse drying pipe also connects feed mechanism, and the other end of impulse drying pipe connects cyclone, the defeated material end of cyclone is connected with the auger conveyer, and the cyclone exhaust side is connected with induced draft fan.
Described impulse drying pipe is to be made of plural pulse unit pipe coupling, and described pulse unit pipe is the biconical die cavity.
On the basis of above-mentioned main technical schemes, can increase following further perfect technical scheme:
Described exhaust collection pipe is provided with the tails dedusting device, and the tails dedusting device can filter flyash bigger in the tail gas.
Revolution frying pan front end is provided with the steam collection tube, steam collection tube and impulse drying pipe coupling; Also be provided with dust-precipitator on the steam collection tube, the dust-precipitator lower end is provided with carrier pipe and is connected with the auger conveyer.
The impulse drying tube end also is provided with the reinforcement machine, the interface of reinforcement machine and impulse drying pipe is positioned at the below of the interface of feeder and impulse drying pipe, larger particles in the raw material can't be floating because of gravity, falls into the reinforcement machine and smash, and introduces the impulse drying pipe again behind the formation powder.
Described feed mechanism is to be made of hopper, rotary conveyor, worm conveyor, worm conveyor and impulse drying pipe coupling.
Also be provided with two-tube cyclone between cyclone and induced draft fan, draw and be provided with water dust scrubber between extension set and two-tube cyclone and be connected with the steam delivery pipe.Dried chemical gypsum is collected through cyclone and is separated, and also contains the gypsum about 1% in steam and the flue gas, separates with two-tube cyclone cluster again, and isolating steam and flue gas are removed sulfurous gas residual in gypsum dust and the flue gas through water film dedusting.
The invention has the beneficial effects as follows and utilize high-temperature tail gas that the production of revolution frying pan produces and steam as thermal source, the dried gypsum raw material, save energy reduces cost.The gas drying contact area is big, and the thermo-efficiency height has been strengthened heat passage process.Contain particulate cigarette ash in the tail gas, can play the yellow effect of taking off of activated carbon, improve the whiteness of terra alba.Tail gas and steam purify by the dedusting environment friendly device, do not have pollutent to efflux, and environment protecting is good.
The present invention is further described below in conjunction with drawings and Examples.
Description of drawings:
Fig. 1 is a front view of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1.
1. revolution frying pan, 2. steam collection tube, 3. auger conveyer, 4. worm conveyor, 5. rotary conveyor, 6. hopper, 7. reinforcement machine, 8. exhaust collection pipe, 9. tails dedusting device, 10. impulse drying pipe, 11. cyclones, 12. two-tube cyclones, 13. steam delivery pipe, 14. draw extension set, 15. water dust scrubbers, 16. burner hearths.
Embodiment
As depicted in figs. 1 and 2, the terra alba drying installation, comprise revolution frying pan 1 and burner hearth 16, be provided with auger conveyer 3 in the revolution frying pan 1, the auger conveyer has hopper, and burner hearth 16 afterbodys are provided with exhaust collection pipe 8, exhaust collection pipe 8 is provided with tails dedusting device 9, revolution frying pan front end is provided with steam collection tube 2, and exhaust collection pipe 8, steam collection tube 2 and feed mechanism are connected with three interfaces of impulse drying pipe 10 1 ends respectively, and impulse drying pipe 10 these end ends also are provided with reinforcement machine 7; The other end of impulse drying pipe 10 connects cyclone 11, and cyclone 11 1 ends are provided with carrier pipe and link to each other with auger conveyer 3, and the other end is connected with induced draft fan 14.14 of cyclone 11 and induced draft fans also are provided with two-tube cyclone 12, draw extension set 14 and are provided with water dust scrubber 15 with 12 of two-tube cyclones and are connected with steam delivery pipe 13.Feed mechanism is to be made of hopper 6, rotary conveyor 5, worm conveyor 4, worm conveyor and impulse drying pipe coupling.Impulse drying pipe 10 is to be made of plural pulse unit pipe coupling, and the pulse unit pipe is the biconical die cavity.
Chemical gypsum is quantitatively sent in the sealing impulse drying pipe 10 by feed mechanism, under induced draft fan 14 effects, chemical gypsum flows in pipeline, larger particles in the raw material can't be floating because of gravity, falling into reinforcement machine 7 smashes, be introduced into impulse drying pipe 10 again after forming powder, simultaneously revolution frying pan 1 is produced the high-temperature tail gas and the steam that produce and introduce impulse drying pipe 10 by exhaust collection pipe 8 and steam collection tube 2, in the impulse drying pipe, behind the abundant contact drying of chemical gypsum and gas, the free water content of chemical gypsum is dropped to below 5% by original 15%-30%, dried chemical gypsum is collected through cyclone 11 and is separated, also contain the gypsum about 1% in steam and the flue gas, separate with two-tube cyclone 12 again, after the separation of two stage cyclone dust-precipitator, isolating chemical gypsum is sent in the revolution frying pan by auger conveyer 3 and is dried calcining, and the steam after separating, flue gas is through water dust scrubber 15, remove sulfurous gas residual in gypsum dust and the flue gas, remaining steam and flue gas are discharged by steam delivery pipe 13.
Claims (7)
1. use the energy-saving environmental protection device of tail gas drying and producing chemical gypsum powder, comprise revolution frying pan (1) and burner hearth (16), be provided with auger conveyer (3) in the revolution frying pan (1), it is characterized in that: burner hearth (16) afterbody is provided with exhaust collection pipe (8), exhaust collection pipe (8) is connected with impulse drying pipe (10) one ends, this end of impulse drying pipe (10) also connects feed mechanism, the other end of impulse drying pipe (10) connects cyclone (11), the defeated material end of cyclone (11) is connected with auger conveyer (3), and cyclone (11) exhaust side is connected with induced draft fan (14).
2. the energy-saving environmental protection device with the tail gas drying and producing chemical gypsum powder according to claim 1, it is characterized in that: exhaust collection pipe (8) is provided with tails dedusting device (9).
3. the energy-saving environmental protection device with the tail gas drying and producing chemical gypsum powder according to claim 1 is characterized in that: revolution frying pan (1) front end is provided with steam collection tube (2), steam collection tube (2) and impulse drying pipe coupling; Also be provided with dust-precipitator on the steam collection tube, the dust-precipitator lower end links to each other with the auger conveyer.
4. the energy-saving environmental protection device with the tail gas drying and producing chemical gypsum powder according to claim 1, it is characterized in that: impulse drying pipe (10) end is provided with reinforcement machine (7), is positioned at the below at feed mechanism and impulse drying pipe coupling place.
5. the energy-saving environmental protection device with the tail gas drying and producing chemical gypsum powder according to claim 1 is characterized in that: feed mechanism is to constitute worm conveyor and impulse drying pipe coupling by hopper (6), rotary conveyor (5), worm conveyor (4).
6. the energy-saving environmental protection device with the tail gas drying and producing chemical gypsum powder according to claim 1 is characterized in that: also be provided with two-tube cyclone (12) between cyclone (11) and induced draft fan (14).
7. the energy-saving environmental protection device with the tail gas drying and producing chemical gypsum powder according to claim 6 is characterized in that: draw and be provided with water dust scrubber (15) between extension set (14) and two-tube cyclone (12) and be connected with steam delivery pipe (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101166785A CN101549970B (en) | 2009-04-30 | 2009-04-30 | Energy-saving environment protection apparatus for producing chemical gypsum powder by using tail gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101166785A CN101549970B (en) | 2009-04-30 | 2009-04-30 | Energy-saving environment protection apparatus for producing chemical gypsum powder by using tail gas |
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| Publication Number | Publication Date |
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| CN101549970A CN101549970A (en) | 2009-10-07 |
| CN101549970B true CN101549970B (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009101166785A Active CN101549970B (en) | 2009-04-30 | 2009-04-30 | Energy-saving environment protection apparatus for producing chemical gypsum powder by using tail gas |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102249577B (en) * | 2010-12-13 | 2013-05-08 | 日照金禾博源生化有限公司 | Process method for producing building gypsum powder by utilizing citric acid gypsum |
| CN102706118B (en) * | 2012-06-27 | 2015-06-03 | 中润天海（北京）环保科技有限公司 | System and method for drying ammonium sulfate gas flow by using waste heat recovery |
| CN104003636A (en) * | 2014-06-12 | 2014-08-27 | 安玉奎 | Gypsum processing system |
| CN106904853B (en) * | 2017-05-11 | 2019-07-05 | 郑州三迪建筑科技有限公司 | Industry by-product gypsum calcining furnace |
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2009
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Effective date of registration: 20230626 Address after: 233705 Weiliu Road, Economic Development Zone, Guzhen County, Bengbu City, Anhui Province Patentee after: Bengbu Baijia new building materials Co.,Ltd. Address before: Victory road 233000 Anhui city of Bengbu province Yuhui District No. 2786 Patentee before: BENGBU EAST CHINA GYPSUM Co.,Ltd. |
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