tieu luan biogas
TRANSCRIPT
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ti:Cng Ngh Biogas.Nhm bao gm cc thnh vin:
M Khc Duy.-Nhm Trng
Nguyn Minh Tin.
Nguyn Kim Khoa.
Ngc Thnh.
Nguyn Hong Minh Thng
Nguyn Vn Long.GVHD:Th.s V Hi Yn
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Cng ngh Biogas
Ni dung Chng I: S lc ngun nguyn liu v x
l nguyn liu. Chng II: Tng quan v cng ngh Biogas.
Chng III: Thit k hm Biogas.
Chng IV: ng dng cng ngh Biogas.
Cng ngh Biogas
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Cng ngh Biogas
Chng I :
S lc v ngun nguyn liu v vic x
l ngun nguyn liu trc khi
Ngun nguyn liu :
-Ph liu, ph thi trong sn xutnng, lm nghip
- Phn gia scl ch yu.
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Kh nng cho phn v thnh phnho hc ca phn gia sc,gia cm :
Vt nui
Kh nng cho phnhng ngy ca 500kg
v.nui
Thnh phn ho hc( % khi lng phn ti )
Th
tch :m 3
Trng
lngti (kg)
Cht
tan dtiu
Nit Photpho T l
Carbon /Nit
B sa
B thtLn
Tru
Gia cm
0,038
0,0380,028
----
0,028
38,5
41,728,4
6,78
31,3
7,98
9,337,02
10,2
16,8
0,38
0,700,83
0,31
1,20
0,10
0,200,47
----
1,20
20-25
20-2520-25
----
7-15
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.3 X l nguyn liu :
cn phi chn lc k v x l sao choph hp vi yu cu sau :
- Giu cellulose.
- t Ligin
- NH4+ban u khong 2000mg/l
- T l carbon / nit : 20/30- Nguyn liu phi c ho tan trong
nc
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nh hng ca cc loi phn n snlng v thnh phn ca kh thu c
:Nguyn liu Snlng khm3/kg
phn kh
Hm lngCH4 (%) Thi gianln men(ngy)
Phn b
Phn giacm
Phn g
Phn heo
Phn ngi
1,11
0,56
0,311,02
0,38
57
69
6068
----
10
9
3020
21Cng ngh Biogas
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Pha ch nguyn liu, v hn hp kh sau khiln men 210C
Nguyn liu
Sn lng kh
m3/ kg ng.liu
Thnh phn sau 21ngy (%)
24 ngy 80 ngy CH4 H2 CO2
Phn bPhn b +0,4% b ma
Phn b +1% tro bp
Phn b + 1% cellulose
Phn b +0,4% b ma+1% ur
Phn b +1% l tp(1,7N)
0,0630,071
0,061
0,084
0,081
0,081
0,210,21
0,19
0,21
0,26
0,22
60,057,6
60,4
52,8
68,0
68,0
1,12,1
2,9
---
---
---
34,438,4
34,4
44,0
30,6
---
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Chng II :TNG QUAN V CNG NGH BIOGAS
1 Biogas?
- Khi nim : Biogas hay cn gi l cngngh sn xut kh sinh hc, l qu trnh phn rc, phn hu c, bn cng rnh, to ra ngun kh sinh hc s dngtrong h gia nh hay trong sn xut.
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2 C s l thuy t ca cng nghBiogas :
Da vo cc vi khun ym kh ln menphn hu k kh cc cht hu c sinh ra
mt hn hp kh c th chy c : H2,H2S, NH3, CH4, C2H2, trong CH4 lsn phm kh ch yu
S qu trnh ln men Metan :
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Giai on I Giai on II Giai on III
Cht hu c,carbohydrates ,
cht bo ,protein .
Khi Vi khunH2 ,CO2
Acid acetic
Acid propionic , Acidbutyric ,Cc ru khcv cc thnh phn khc
Khi Vikhun
H2 , CO2Acid acetic
hi Vi
Khun
CH4,CO2
Tc dngca vi khun Vi khun Vi khun sinh kh
ln men v thy phn acetogenic Metan
Qu trnh ln men metan chia lm 3 giai on :
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Giai on I :
Cht hu c phc tp:
Cht hu c n gin
(PROTEIN, A.AMIN, LIPID)
Vi khun closdium bipiclobacterium,bacillus gram m khng sinhbo t, staphy loccus.
(ALBUMOZ PEPIT,GLYXERIN, A.BO)
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Giai on II :hnh thnh acid (phaacid)
Nh vo vi khun acetogenic bacteria (vikhun tng hp acetat), cc hydratescarbon acid c phn t lng thp(C2H5COOH, C3H7COOH, CH3COOH )v pH mi trng di 5 nn gy thi.
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Giai on III :hnh thnh kh Metan
Sn phm ca pha acid l nguyn liu phn
hu giai on ny, to ra hn hp kh : CH4,CO2, H2S, N2, H2, v mui khong (pH ca mitrng chuyn sang kim).
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3 M t k thut Biogas
C 2 loi hm biogas chnh :
Loi hm gy men cht hu ctheo m
Loi hm gy men cht hu clin tc
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Gy men cht hu c theo m :
B ln menPhn ng
Np ding
Ca kh ra
Np ly phn
Ca ra
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Gy men cht hu c lin tc Loi hm sinh kh kiu vm c nh
Loi hm sinh kh c np y di ng(nh phao ni )
Loi hm sinh kh kiu ti
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Loi hm sinh kh kiu vm c nh
C
ngngh
Bio
gas
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Loi hm sinh kh c np y di ng
C
ngnghBiog
asCngngh
Biogas
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Loi hm sinh kh kiu ti
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4 Lm sch kh Biogas :
Loi tr CO2:dng KOH, NaOH, Ca(OH)2
NaOH + CO2 Na2CO3 + H2O
Na2CO3 + CO2 + H2O NaHCO3
Ca(OH)2 + CO2 CaCO3 + H2
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Loi tr H2S : dng Na2CO3 hoc hpcht stH2S + Na2CO3 NaHS + NaHCO3
P.PHP IRONFILING (MT ST) :Fe2O3 + 3H2S Fe2S3 + H2O
*Phc hi Fe2O3 :2Fe2S3 + 3O2 2Fe2O3 + 3S2
Loi tr bn trong b phn hu
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Chng IIIThit k hm Biogas
1La chn loi hm thch hp :Vic la chn hm cn ty thuc vo iu kinca khu vc xy dng hm (loi t, loi , ).
2 Quy m ca hm :Ty thuc vo yu cu, iu kin ca ngi xydng, cng nh lng nguyn liu cung cp cphong ph hay khng.
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Thit k hm Biogas(quy m va)
1. La chn nn mng: ty vo kh hu, t, ncngm.
2.Dung tch ca hm: da vo lng kh cn chovic tiu th v kh c dng ra sao. m bo1,5-2m3 / ngi.
3.Tnh tonThit k .
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Hm sinh kh c hnh cu trn
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Cc yu t nh hng n qu trnh ln men :
Nhit pH
T l Carbon / Nit
T l pha long
c tnh nguyn liu
Tc b sung nguyn liuC mt khng kh v c t
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Chng IVng dng cng ngh Biogas
1. Quy m nh h gia nh
2. Quy m sn xut trung bnh3. Quy m ln
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S dng biogas quy m nh
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My pht in chybng Biogas
n s dung khBiogas
Q l h d t
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Quy m ln hn : ng dng trong snxut v thay th nhin liu cho ng c
M hnh nh my s dng Biogas cung cpin
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Xe hi , tu ho s dng nhin liu biogas
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S dng nng lng Biogas
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Chuc quy co va cac ban co buoi hoc thanh
cong, mot buoi sang vui ve.
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Ti liu tham kho:
www.biogas.org.vnwww.zorg-biogas.com
tailieu.vn
Xulymoitruong.com
http://www.biogas.org.vn/http://www.zorg-biogas.com/http://www.zorg-biogas.com/http://www.zorg-biogas.com/http://www.zorg-biogas.com/http://www.biogas.org.vn/